CN100421277C - Organic light-emitting diode panel - Google Patents
Organic light-emitting diode panel Download PDFInfo
- Publication number
- CN100421277C CN100421277C CNB2004100013012A CN200410001301A CN100421277C CN 100421277 C CN100421277 C CN 100421277C CN B2004100013012 A CNB2004100013012 A CN B2004100013012A CN 200410001301 A CN200410001301 A CN 200410001301A CN 100421277 C CN100421277 C CN 100421277C
- Authority
- CN
- China
- Prior art keywords
- heater wire
- light emitting
- organic light
- emitting diode
- lead
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Abstract
The present invention relates to an organic luminous diode panel which comprises a baseplate, a heating circuit structure and a plurality of organic luminous diodes, wherein a plurality of pixel regions are defined on the baseplate; the heating circuit structure is arranged on the baseplate; the organic luminous diodes correspond to the pixel regions; the heating circuit structure comprises two conducting wires which are not connected, a plurality of heating wires which are respectively electrically connected to both conducting wires and cover parts of the pixel regions, and a grounding electrode.
Description
Technical field
The present invention relates to a kind of organic LED panel (organic light emitting diode panel, OLED panel), especially relate to a kind of heating process (heating process) that utilizes and directly produce the organic LED panel of the pixel (pixel) of different colours with heating circuit structure (heating circuit structure).
Background technology
In flat-panel screens, though organic light emitting diode display starting is than LCD (LCD) evening, but self-luminous, wide viewing angle, response speed are fast to possess, low power consumption, contrast is strong, brightness is high, thin thickness, can full-colorization, advantage such as simple in structure and operating environment temperature range is big, gradually in, the small size portable display attracted attention in the field.Especially after the research and development of working with perseverance through industrial department and research department, some previous insurmountable problems, that for example process conditions are difficult to control, mask is used is unfavorable, hat seal (cap seal) instability etc., breakthrough progress has been arranged at present, eye on the Future organic light emitting diode display even be expected to be applied to large-sized field of display.
And when analyzing the future development of organic light emitting diode display, then must understand its type of drive earlier.Organic light emitting diode display is originally as a current drives assembly, its luminosity decides according to the size by electric current, when at present OLED being applied on the matrix form display (matrix display), promptly be the effect that reaches the different brightness of demonstration (being called gray scale again) by the size of control OLED drive current.According to the difference of type of drive, the matrix form display can be divided into two kinds of passive matrix (passive matrix) display and active matrix (active matrix) displays.Passive matrix display is to adopt the mode of driven sweep line in proper order, drive the pixel be positioned at different rows/list one by one, therefore the fluorescent lifetime of each pixel that go/lists can be subject to the scanning frequency and the number of scanning lines of display, is not suitable for the display of big picture and high-resolution (the expression scan line increases).Active Matrix Display then is to form independently image element circuit in each pixel, comprise a capacitor (capacitor, Cs), one OLED luminescence component, and at least two thin-film transistors (thin-film transistor, TFT), facilitate the use image element circuit and regulate the size of the drive current of OLED, even therefore under big picture and high-resolution requirement, still can continue to provide each pixel one stabilized driving electric current, and improve the uniformity of the brightness of display.
Similarly be that when the Organic Light Emitting Diode display will be realized colored the demonstration, red bluish-green three coloured light of essential formation earlier mixed three coloured light again to form the various beautiful colors that enrich with other display.The normal material that sends white light that adopts in the prior art makes the white light filter (color filter) by red, blue, green three looks respectively, again to produce red bluish-green three coloured light.Yet, this kind method need be provided with filter, needs to control calibration accuracy (alignment accuracy) again on technology, in order to avoid cause the inhomogeneous of three coloured light, so extra restriction often is provided when layout (layout), and then reduces the aperture than (aperture ratio).
Therefore, the another kind of method of also normal employing promptly utilizes different materials to produce red, blue, green three color pixels in the prior art, is superimposed as a colour element by three color pixels again, and then reaches the purpose of bluish-green three coloured light of mixture of red.Please refer to Fig. 1 and Fig. 2, Fig. 1 utilizes three colours for prior art and usually makes the schematic diagram of an organic LED panel 10.As shown in Figure 1, the organic LED panel 10 of prior art includes a transparency carrier 12, and this transparency carrier 12 is a glass (glass) substrate, plastics (plastic) substrate or a quartz (quartz) substrate.One upper surface 14 of transparency carrier 12 comprises a plurality of red pixel 16, blue pixel 18 and green pixels 22 that are arrayed, and adjacent red pixel 16, blue pixel 18 and green pixel 22 constitute a colour element 24.
Please refer to Fig. 2, Fig. 2 is organic LED panel 10 a shown in Figure 1 generalized section along tangent line 2-2 '.As shown in Figure 2, among each pixel 16,18,22 of organic LED panel 10 (please refer to Fig. 1), comprise that respectively one is formed at the lip-deep transparency conducting layer (transparent conductive layer) 26,28,32 of transparency carrier 12, be used for regarding the anode (anode) of each Organic Light Emitting Diode; One is formed at the lip-deep organic film (organic thin film) 34 of transparency conducting layer 26; One is formed at the lip-deep organic film 36 of transparency conducting layer 28; One is formed at the lip-deep organic film 38 of transparency conducting layer 32; And a lip-deep metal level (metal layer) 42 that is formed at organic film 34,36,38 respectively, as the negative electrode (cathode) of each Organic Light Emitting Diode.And because organic film 34,36,38 has passed through advance planning before making, the kind of its inner layers of material, thickness or combination all may be different, therefore, under identical operating current, each pixel 16,18,22 of organic LED panel 10 will be sent the light of different colours, and then constitute a colour element 24.
Yet available technology adopting white light material makes white light respectively by red, blue, green three-colour filter again, and to produce the method for red bluish-green three coloured light, the calibration accuracy problem of being derived not only causes the inhomogeneous of three coloured light easily, reduces the aperture ratio again easily.And utilize different materials to produce red, blue, green three color pixels, and be superimposed as the method for a colour element by three color pixels again with bluish-green three coloured light of mixture of red, relate to the problem that organic film in the different colours pixel has otherness.Because the organic film in the different colours pixel has otherness, it is comparatively complicated to be bound on making, and when technology controlling and process is bad, equally can produce problem and other problem of deriving because of technology of calibration, and then causes the defective on the product.Therefore, how to develop the organic LED panel that a kind of new active matrix, it does not only need to use filter, also can not produce the problem of calibration error, and thereby can promote the aperture ratio, needn't make simultaneously organic film again, make the flow process simplification, just become crucial problem so can keep corresponding to the pixel of different colours.
Summary of the invention
Main purpose of the present invention is to provide a kind of organic LED panel, and a kind of organic LED panel that can avoid the problems referred to above to produce especially is provided.
In an embodiment of the present invention, provide a kind of organic LED panel, this organic LED panel comprises: a definition has substrate, a heating circuit structure and a plurality of Organic Light Emitting Diode corresponding to each pixel region of a plurality of pixel regions.Wherein heating circuit structure comprises: two mutual disjunct one first leads and one second lead, and this first lead and this second lead are arranged on the substrate; One first insulating barrier, this first insulating barrier is arranged on the substrate, and comprises a plurality of first contact holes that expose first lead and second lead respectively within this first insulating barrier; Many first heater wires and many second heater wires, these many first heater wires and many second heater wires are arranged on first insulating barrier, each first heater wire and each second heater wire are electrically connected to first lead and second lead respectively via each first contact hole, and each first heater wire and each second heater wire cover each pixel region of part respectively; An and grounding electrode, this grounding electrode is electrically connected to each first heater wire and each second heater wire, wherein in each pixel region, with the Organic Light Emitting Diode of each first heater wire heating with the heat energy and the characteristic changing of the Organic Light Emitting Diode absorption inequality of each second heater wire heating.
In another embodiment of the present invention, a kind of organic LED panel is provided, comprise: a substrate, definition has a plurality of pixel regions on this substrate, and within each described pixel region respectively definition one diode area and a TFT regions arranged; Many first heater wires and many second heater wires are arranged on this substrate, and each described first heater wire and each described second heater wire cover each described pixel region of part respectively; One thin-film transistor is arranged on each described first heater wire and each described second heater wire in each described TFT regions; One insulating barrier is formed on the described substrate, and described insulating barrier covers each described thin-film transistor and each described first heater wire and each described second heater wire; An and Organic Light Emitting Diode, be arranged on the described insulating barrier in each described diode area, wherein each described first heater wire is electrically connected to one first lead that is arranged on described first heater wire to heat corresponding Organic Light Emitting Diode, make it send green glow, and each described second heater wire is electrically connected to one second lead that is arranged on described second heater wire to heat corresponding Organic Light Emitting Diode, make it send ruddiness, and described insulating barrier cover described first lead and described second lead.
Because organic LED panel of the present invention is provided with a heater circuit above or below Organic Light Emitting Diode, and each first, second heater wire can be positioned at the below of resilient coating, or with each first, second heater wire be arranged at each Organic Light Emitting Diode above or below, the Organic Light Emitting Diode that utilizes a heating process will send ruddiness and green glow is again made.Therefore, not only do not need to use filter, ratio is promoted thereby the problem that can avoid calibration accuracy makes the aperture, different organic films need be set in response to different colours again make technology keep simplification, is unlikely to the extra problem of deriving because of complicated technology.Generally speaking, organic LED panel of the present invention has low cost, heat treatment process is easy and advantage such as high production capacity.
Description of drawings
Fig. 1 utilizes three colours for prior art and usually makes the schematic diagram of an organic LED panel.
Fig. 2 is the generalized section of organic LED panel shown in Figure 1 along tangent line 2-2 '.
Fig. 3 to Fig. 7 is the schematic diagram of an organic LED panel in the first embodiment of the invention.
Fig. 8 to Fig. 9 is the generalized section of an organic LED panel in the second embodiment of the invention.
Figure 10 to Figure 13 is the vertical view of the organic LED panel of Fig. 8 and Fig. 9.
Description of reference numerals:
10,100,200 organic LED panels
12,102,202 transparency carriers
14,112 upper surfaces
16,134,264 red pixels
18,132,262 blue pixel
22,136,266 green pixels
24,138,268 colour elements
26,28,32 transparency conducting layers
34,36,38 organic films
42 metal levels
104,204 pixel regions
106,244 first leads
108,246 second leads
116,242 first contacts wire
118,212 first heater wires
122,214 second heater wires
124 grounding electrodes
126 heating circuit structure
128,254 Organic Light Emitting Diodes
206 diode areas
208 film transistor zones
216 grounding electrodes
218 thin-film transistors
222 resilient coatings
224 polysilicon layers
226 source electrodes
228 drain electrodes
232 passages
234 gate insulators
236 gate electrodes
238 inner layer dielectric layers
248 second contact holes
252 insulating barriers
256 transparent pixels electrodes
258 the 3rd contact holes
Embodiment
Please refer to Fig. 3 to Fig. 7, Fig. 3 to Fig. 7 is the schematic diagram of an organic LED panel 100 in the first embodiment of the invention.As shown in Figure 3, organic light emitting diode display 100 of the present invention comprises a transparency carrier 102, this transparency carrier 102 is a glass substrate, a plastic base or a quartz base plate, and definition has a pixel array region (pixel array area on the transparency carrier 102, do not show) and a periphery circuit region (periphery circuit area does not show).Define again in the pixel array region a plurality of pixel regions (pixel area) 104 are arranged, be used for holding each OLED assembly and with its capacitor and the thin-film transistor of collocation mutually, and periphery circuit region is used for holding control circuit (control circuit), because emphasis of the present invention and periphery circuit region are irrelevant, give unnecessary details so seldom do.Article two, mutual disjunct first lead (firstconductive line) 106 and second lead (second conductive line) 108 is formed at the upper surface 112 of substrate 102, in fact, first, second lead 106,108 and be formed at holding wire (signal line on the organic LED panel 100, do not show) form by making same metal level form pattern, and first, second lead 106,108 comprises a tungsten line (W line), a chromium line (Cr line) or other conductive metal wire.
As shown in Figure 4, organic LED panel 100 also comprises one first insulating barrier (the first isolation layer that is arranged on the substrate 102, do not show), the first insulating barrier (not shown) covers each pixel region 104 and first, second lead 106,108.Comprise a plurality of first contact holes (first contact hole) 116 within the first insulating barrier (not shown), and each first contact hole 116 exposes first, second lead 106,108 of part respectively.The first insulating barrier (not shown) comprises that one is the silicon oxide layer (TEOS-SiO of reacting gas with the tetraethoxysilane
2Layer), silicon dioxide layer (silicon oxide layer) or silicon nitride layer (silicon nitride layer).
As shown in Figure 5, organic light emitting diode display 100 also comprises many first heater wires (first heating wire) 118 and many second heater wires (second heatingwire) 122 that are arranged on the substrate 102, and each first, second heater wire 118,122 is electrically connected to first, second lead 106,108 respectively via each first contact hole 116.Each first, second heater wire 118,122 covers each pixel region 104 of part respectively simultaneously.Each first, second heater wire 118,122 is tin indium oxide or indium zinc oxide, in fact, each first, second heater wire 118,122 is made of translucent material, but when first, second heater wire 118,122 by transparent material (as tin indium oxide or indium zinc oxide) during formation, to the aperture of organic LED panel 100 integral body than having very positive help.
Be provided with a grounding electrode (ground electrode) 124 on the substrate 102 in addition, grounding electrode 124 is electrically connected to each first, second heater wire 118,122, to keep the stable of voltage on each first, second heater wire 118,122.In fact, grounding electrode also can be an electrode that is electrically connected to other voltage, supplies with the purpose that each first, second heater wire 118,122 is stablized enough heating voltages as long as can reach.Since first, second lead 106,108 and first, second heater wire 118,122 by the first insulating barrier (not shown) electricity isolation (electrically isolated), therefore, in the heating circuit structure 126 that is made of first, second lead 106,108 and first, second heater wire 118,122 and grounding electrode 124, first, second heater wire 118,122 can not interact fully.Simultaneously, grounding electrode 124 may be by transparent material, as tin indium oxide or indium zinc oxide constitutes, is made of opaque metal material.
Also be formed with one second insulating barrier (not shown) on the substrate 102, the second insulating barrier (not shown) covers heating circuit structure 126, and includes a plurality of second contact holes among second insulating barrier.A plurality of Organic Light Emitting Diodes 128 (as shown in Figure 6) are arranged on second insulating barrier, and correspond to each pixel region 104.Each Organic Light Emitting Diode 128 includes a transparency electrode (not shown), is formed on second insulating barrier; One organic film (not shown) is formed on the transparency electrode (not shown); And a metal level (not shown), be formed on the organic film.Each transparency electrode is an indium tin oxide layer or an indium zinc oxide layer, and be used for being used as the anode of each Organic Light Emitting Diode 128, metal level is a magnesium metal level, an aluminum metal layer, a lithium metal level or an alloy-layer, and is used for being used as the negative electrode of each Organic Light Emitting Diode 128.In fact, metal level is looked actual needs, can be covered on all pixel regions 104 comprehensively, or be covered in respectively on each pixel region 104.Include at least one thin-film transistor in addition among each pixel region 104, and each transparency electrode is electrically connected to a drain electrode (not shown) of a thin-film transistor wherein via each second contact hole (not shown).
As shown in Figure 7, first, second lead 106,108 is electrically connected to same voltage source or current source via an external power cord (not shown), but also might be electrically connected to different voltage sources or current source, therefore, when applied voltage is applied in heating circuit structure 126 via first, second lead 106,108, will produces corresponding electric current and flow through each first, second heater wire 118,122.Equal the principle of power based on the product of resistance and current squaring, each first, second heater wire 118,122 will provide heat energy to each Organic Light Emitting Diode 128 that is positioned at its top.At this moment, not heated each Organic Light Emitting Diode 128 is unaffected fully, when adjusting the big or small of applied voltage and carrying out heating process, each Organic Light Emitting Diode 128 that is positioned at each Organic Light Emitting Diode 128 of each first heater wire, 118 top and is positioned at each second heater wire, 122 top will absorb the heat energy of inequality, and the characteristic of change Organic Light Emitting Diode 128.
When formal running, not heated each Organic Light Emitting Diode 128 will send blue light, and make each pixel region become blue pixel 132 corresponding to these Organic Light Emitting Diodes 128, each Organic Light Emitting Diode 128 that absorbs more heat energy will send ruddiness, and make each pixel region become red pixel 134 corresponding to these Organic Light Emitting Diodes 128, and each Organic Light Emitting Diode 128 that absorbs less heat energy will send green glow, and make each pixel region corresponding to these Organic Light Emitting Diodes 128 become green pixel 136.And adjacent blue pixel 132, red pixel 134 and green pixel 136 constitute a colour element 138.What deserves to be mentioned is, when grounding electrode 124 is made of tin indium oxide or indium zinc oxide, its width must be greater than the width of first, second lead 106,108, to reduce the difference of resistance between blue pixel 132, red pixel 134 and the green pixel 136, and promote the homogeneous heating degree, and then promote the uniformity of blue light, ruddiness and green glow.But, when the material of grounding electrode 124 is metal, then do not have such restriction.
Each first, second heater wire 118,122 may have Any shape, and is not limited to strip shown in the figure (stripe) structure.Comprise mosaic arrangement (Mosaic Type) owing to send the arrangement mode of the Organic Light Emitting Diode 128 of green glow, ruddiness, blue light, delta arrangement (Triangle Type) or striped arrangement (Stripe Type) etc., each first, second heater wire 118,122 also may be to present with broken line or other pattern.In fact, as long as each first, second heater wire 118,122 can be covered on each pixel region 104 of desire heating equably and the purpose that reaches even heating promptly covered within the present invention.In addition, at least one thin-film transistor included in each pixel region 104 (does not show and will constitute one drive circuit, and make each pixel in the panel produce corresponding output current, and then control the luminosity of each Organic Light Emitting Diode 128 corresponding to the signal that this drive circuit sent.Heater circuit provided by the present invention not only can be applied to the panel of active matrix (active matrix) simultaneously, can also be applied to the panel of passive matrix (passive matrix).
Yet embodiments of the present invention are not limited in the structure that above-mentioned heating circuit structure 126 is set at each Organic Light Emitting Diode below.In fact, in organic LED panel 100 of the present invention, each first, second heater wire 118,122 can also be set at the top of each Organic Light Emitting Diode.Under this situation, each Organic Light Emitting Diode and first, second lead 106,108 are set at earlier on the substrate 102, and the holding wire (not shown) on first, second lead 106,108 and the formation organic LED panel 100 forms by making same metal level form pattern simultaneously.Again by means of the first insulating barrier (not shown) with each Organic Light Emitting Diode and each first, second heater wire 118,122 electricity are isolated, or in make each first, second heater wire 118, before 122, form other insulating barrier (not shown) in advance, to strengthen each Organic Light Emitting Diode and each first, second heater wire 118,122 electricity is isolated, utilize a plurality of contact holes in the first insulating barrier (not shown) (not show again, or add a plurality of contact holes in other insulating barrier), with each Organic Light Emitting Diode be electrically connected to respectively each first, second heater wire 118,122, and with each first, second heater wire 118,122 are electrically connected to first respectively, second lead 106,108.When formal running, each first heater wire 118 will heat corresponding Organic Light Emitting Diode, make the Organic Light Emitting Diode that is positioned at its below send green glow, and each second heater wire 122 is in order to heat corresponding Organic Light Emitting Diode, make the Organic Light Emitting Diode that is positioned at its below send ruddiness, and not heated Organic Light Emitting Diode will send blue light.In this kind structure, other execution mode is identical with the structure that Organic Light Emitting Diode 128 is set at heating circuit structure 126 tops.
In addition, in the embodiments of the present invention,, also has other execution mode even heating circuit structure is set at the below of each Organic Light Emitting Diode.Please refer to Fig. 8 to Figure 13, Fig. 8 to Fig. 9 is the generalized section of an organic LED panel 200 in the second embodiment of the invention, and Figure 10 to Figure 13 is the vertical view of the organic LED panel 200 of Fig. 8 and Fig. 9.As Fig. 8 and shown in Figure 10, organic LED panel 200 of the present invention includes a transparency carrier 202, this transparency carrier 202 is a glass substrate, a plastic base or a quartz base plate, and definition has a pixel array region (not shown) and a periphery circuit region (not shown) on the transparency carrier 202.Definition has a plurality of pixel regions 204 in the pixel array region, and within each pixel region 204 again respectively definition one diode area (dioderegion) 206 and a TFT regions (thin film transistor region) 208 are arranged, be used for holding the OLED assembly and with its capacitor and the thin-film transistor of collocation mutually.And periphery circuit region is used for holding control circuit, because emphasis of the present invention and periphery circuit region are irrelevant, so repeat no more in this.
Many first, second heater wires 212,214 are arranged at the upper surface of transparency carrier 202, and each first, second heater wire 212,214 covers each pixel region 204 of part respectively.Include a grounding electrode 216 on the transparency carrier 202 in addition, link to each other with each first, second heater wire 212,214.Each first, second heater wire 212,214 and grounding electrode 216 are tin indium oxide or indium zinc oxide.In fact, each first, second heater wire 212,214 is made of translucent material, but when each first, second heater wire 214 is made of transparent material, to the aperture of organic LED panel 200 integral body than having very positive help, simultaneously, grounding electrode is made of opaque metal material.
As shown in Figure 8, one thin-film transistor 218 is arranged on the heater wire in the TFT regions 208 (is to be that example is done explanation with first heater wire 212 at this), and comprises a resilient coating (buffer layer) 222 between the thin-film transistor 218 and first heater wire 212.Thin-film transistor 218 comprises a polysilicon layer (polysilicon layer, poly-Si layer) 224, and the one source pole electrode (source electrode) 226 that includes thin-film transistor 218 among the polysilicon layer 224, one drain electrode (drain electrode), 228 and one passage (channel) 232, one gate insulator (gate insulating layer, GI layer) 234 is arranged on the resilient coating 222 and covers polysilicon layer 224, one gate electrode (gate electrode) 236 is arranged at the surface of the gate insulator 234 of passage 232 tops, one inner layer dielectric layer (inter layerdielectric, ILD) 238 be arranged on the gate insulator 234 and cover grid electrode 236, and at least one first contact hole 242 run through inner layer dielectric layer 238 with gate pole insulating barrier 234.Resilient coating 222 is made of silica, and it not only has the upwards effect of diffusion of impurity that prevents in the transparency carrier 202, the buffering when also being used as laser treatment polysilicon layer 224.
As Fig. 9 and shown in Figure 11, article two, mutual disjunct first, second lead 244,246 is arranged on the transparency carrier 202, and be electrically connected to first, second heater wire 212,214 by a plurality of second contact holes 248 that are positioned at each pixel region 204 resilient coating 222, gate insulator 234 and inner layer dielectric layer 238 in addition that run through respectively, being electrically connected to first heater wire 212 with first lead 244 via a plurality of second contact holes 248 in Fig. 9 is that example is done explanation.
Please refer to Fig. 8, it should be noted that, in the time of first, second contact hole 242,248 in making organic LED panel 200, all resilient coating 222, gate insulator 234 and inner layer dielectric layers 238 that are positioned at each diode area 206 are all etched clean, make follow-up when finishing organic LED panel 200, first heater wire 212 is unlikely to across very thick insulating barrier with the Organic Light Emitting Diode (not shown), to guarantee the efficiency of heating surface (in like manner, also like this between second heater wire 214 and the Organic Light Emitting Diode).In fact, first, second lead 244,246 and the holding wire (not shown) that is formed on the organic LED panel 200 form by making same metal level form pattern, and the source electrode 226 of thin-film transistor 218 is electrically connected to a corresponding signal lines (not shown) via first contact hole 242.First, second lead 244,246 comprises a tungsten line, a chromium line or other conductive metal wire.
As Fig. 8 and shown in Figure 9, an insulating barrier 252 is formed on the transparency carrier 202, and covers the thin-film transistor 218 and first heater wire 212.Insulating barrier 252 is made of silica, and rough 1000 dusts that equal of the thickness of insulating barrier 252
In fact, insulating barrier 252 covers whole transparency carrier 202, and promptly each first, second heater wire 212,214, each thin-film transistor 218, first, second lead 244,246 and transparent ground electrode 216 all are subjected to the protection of insulating barrier 252.
As Fig. 8 and shown in Figure 12, an Organic Light Emitting Diode 254 is arranged on the insulating barrier 252 in the diode area 206.Organic Light Emitting Diode 254 comprises a transparent pixels electrode (pixelelectrode) 256, is formed on the insulating barrier 252; One organic film (not shown) is formed on the transparent pixels electrode 256; And a metal level (not shown), be formed on the organic film.Transparent pixels electrode 256 is an indium tin oxide layer or an indium zinc oxide layer, and be used for being used as the anode of Organic Light Emitting Diode 254, metal level is a magnesium metal level, an aluminum metal layer, a lithium metal level or an alloy-layer, and is used for being used as the negative electrode of Organic Light Emitting Diode 254.In Fig. 8, only demonstrate transparent pixels electrode 256 especially, understood demonstration as for organic film and metal level, because it has many kinds to change.In fact, metal level is looked actual needs, can be covered on all pixel regions 204 comprehensively, or be covered in respectively on each diode area 206.Wherein transparent pixels electrode 256 is electrically connected to the drain electrode 228 of thin-film transistor 218 via one the 3rd contact hole 258.As shown in figure 12, an Organic Light Emitting Diode 254 is arranged at respectively within each pixel region 204.
As shown in figure 13, first, second lead 244,246 is electrically connected to same voltage source or current source via an external power cord (not shown), but also might be electrically connected to different voltage sources or current source, therefore, in the time of on applied voltage is applied in first, second lead 244,246, will produces corresponding electric current and flow through each first, second heater wire 212,214.Equal the principle of power based on the product of resistance and current squaring, each first, second heater wire 212,214 will provide heat energy to each Organic Light Emitting Diode 254 that is positioned at its top.At this moment, utilize the size of adjustment applied voltage and the time of heating process, each Organic Light Emitting Diode 254 that is positioned at each Organic Light Emitting Diode 254 of each first heater wire, 212 top and is positioned at each second heater wire, 214 top will absorb the heat energy of inequality, and the characteristic of change Organic Light Emitting Diode 254.
When formal running, not heated each Organic Light Emitting Diode 254 will send blue light, and make each pixel region become blue pixel 262 corresponding to these Organic Light Emitting Diodes 254, each Organic Light Emitting Diode 254 that absorbs more heat energy will send ruddiness, and make each pixel region become red pixel 264 corresponding to these Organic Light Emitting Diodes 254, and each Organic Light Emitting Diode 254 that absorbs less heat energy will send green glow, and make each pixel region corresponding to these Organic Light Emitting Diodes 254 become green pixel 266.And adjacent blue pixel 262, red pixel 264 and green pixel 266 constitute a colour element 268.In this embodiment, the Organic Light Emitting Diode 254 that is positioned at each first heater wire, 212 top sends ruddiness, and the Organic Light Emitting Diode 254 that is positioned at each second heater wire, 214 top sends green glow, and not heated each Organic Light Emitting Diode 254 then sends blue light.
What deserves to be mentioned is that grounding electrode 216 is electrically connected to each first, second heater wire 212,214, to keep the stable of voltage on each first, second heater wire 214.In fact, grounding electrode 216 also can be an electrode that is electrically connected to other voltage, supplies with the purpose that each heater wire 212,214 is stablized enough heating voltages as long as can reach.In this embodiment, when grounding electrode 216 is transparent material (as indium oxide WU or indium zinc oxide), its width must be greater than the width of first, second lead 244,246, to reduce the resistance of each first, second heater wire 214, and and then promote the homogeneous heating degree of red pixel 264 and green pixel 266, in the hope of reaching good blue light, ruddiness and the green glow uniformity.Yet, when the material of grounding electrode is metal, do not have such restriction.In addition, because being cushioned layer 222, gate insulator 234 and 238 electricity of inner layer dielectric layer, first, second lead 244,246 and first, second heater wire 212,214 isolate, therefore, in the heating circuit structure that is made of first, second lead 244,246, first, second heater wire 212,214 and grounding electrode 216, first, second heater wire 212,214 can not interact fully.
Each first, second heater wire 212,214 may have Any shape, and is not limited to list structure shown in the figure.Include mosaic arrangement owing to send the arrangement mode of the Organic Light Emitting Diode 254 of green glow, ruddiness, blue light, delta arrangement or striped arrangement etc., each first, second heater wire 212,214 also may be to present with broken line or other pattern.In fact, as long as each first, second heater wire 212,214 can be covered on each pixel region 204 of desire heating equably and the purpose that reaches even heating promptly covered within the present invention.Simultaneously, each first, second heater wire 212,214 also may be walked around each thin-film transistor 218, and under this situation, each thin-film transistor 218 directly is arranged at the surface of the transparency carrier 202 in each TFT regions 208.In addition, thin-film transistor 218 and other thin-film transistor (not shown) of being comprised in each pixel region 204, constitute one drive circuit, and make each pixel in the panel produce corresponding output current, and then control the luminosity of each Organic Light Emitting Diode 254 corresponding to the signal that this drive circuit sent.In addition, heater circuit provided by the present invention not only can be applied to the panel of active matrix, can also be applied to the panel of passive matrix.
Compared with prior art, organic LED panel of the present invention is provided with a heater circuit above or below Organic Light Emitting Diode, wherein each first, second heater wire can be positioned at the below of resilient coating, or with each first, second heater wire be arranged at each Organic Light Emitting Diode above or below, the Organic Light Emitting Diode that utilizes a heating process will send ruddiness and green glow is again made.Thus, not only do not need to use filter, can avoid the calibration accuracy problem and the aperture ratio is promoted, need different organic films be set in response to different colours again and make technology keep simplification, be unlikely to because complicated technology and the extra problem of deriving.Generally speaking, organic LED panel of the present invention has low cost, heat treatment process is easy and advantage such as high yield.
The above only is the preferred embodiments of the present invention, and all equivalences of doing according to claims of the present invention institute restricted portion change and modify, and all should belong to covering scope of the present invention.
Claims (10)
1. organic LED panel comprises:
One substrate, definition has a plurality of pixel regions on described substrate;
One heating circuit structure, described heating circuit structure comprises: mutual disjunct one first lead and one second lead all are formed on the described substrate; One is formed at first insulating barrier on the described substrate, and described first insulating barrier also comprises a plurality of first contact holes that expose described first lead and described second lead respectively; Many first heater wires and many second heater wires, all be arranged on described first insulating barrier, each described first heater wire and each described second heater wire are electrically connected to described first lead and described second lead respectively via each described first contact hole, and each described first heater wire and each described second heater wire cover each described pixel region of part respectively; And a grounding electrode, described grounding electrode is electrically connected to respectively this first heater wire and respectively this second heater wire; And
A plurality of Organic Light Emitting Diodes, corresponding to each described pixel region,
Wherein in each described pixel region, with the Organic Light Emitting Diode of each described first heater wire heating with the heat energy and the characteristic changing of the Organic Light Emitting Diode absorption inequality of each described second heater wire heating.
2. panel as claimed in claim 1 comprise also that wherein one is covered in second insulating barrier on the described heating circuit structure, and each described Organic Light Emitting Diode is arranged on described second insulating barrier.
3. panel as claimed in claim 1, wherein each described first heater wire is in order to heat corresponding Organic Light Emitting Diode, send green glow so that be positioned at the Organic Light Emitting Diode of each described first heater wire top, and each described second heater wire is in order to heat corresponding Organic Light Emitting Diode, the described Organic Light Emitting Diode of this second heater wire top sends ruddiness so that be positioned at respectively, and wherein not heated each described Organic Light Emitting Diode sends blue light.
4. panel as claimed in claim 1, wherein each described Organic Light Emitting Diode is arranged under described first insulating barrier.
5. panel as claimed in claim 1, wherein said pixel region comprises at least one thin-film transistor, and described thin-film transistor is in order to control the luminosity of each described Organic Light Emitting Diode.
6. panel as claimed in claim 2, wherein each described Organic Light Emitting Diode comprises:
One transparency electrode is formed on described second insulating barrier, and wherein each described transparency electrode is used for being used as the anode of each described Organic Light Emitting Diode;
One organic film is formed on the described transparency electrode; And
One metal level is formed on the described organic film, and wherein each described metal level is used for being used as the negative electrode of each described Organic Light Emitting Diode.
7. panel as claimed in claim 1, wherein said grounding electrode are a transparent ground electrode, and the width of described grounding electrode is greater than the width of first lead and one second lead.
8. organic LED panel comprises:
One substrate, definition has a plurality of pixel regions on this substrate, and within each described pixel region respectively definition one diode area and a TFT regions arranged;
Many first heater wires and many second heater wires are arranged on this substrate, and each described first heater wire and each described second heater wire cover each described pixel region of part respectively;
One thin-film transistor is arranged on each described first heater wire and each described second heater wire in each described TFT regions;
One insulating barrier is formed on the described substrate, and described insulating barrier covers each described thin-film transistor and each described first heater wire and each described second heater wire; And
One Organic Light Emitting Diode is arranged on the described insulating barrier in each described diode area,
Wherein each described first heater wire is electrically connected to one first lead that is arranged on described first heater wire to heat corresponding Organic Light Emitting Diode, make it send green glow, and each described second heater wire is electrically connected to one second lead that is arranged on described second heater wire to heat corresponding Organic Light Emitting Diode, make it send ruddiness, and described insulating barrier cover described first lead and described second lead.
9. panel as claimed in claim 8, wherein said first lead and described second lead do not link to each other.
10. panel as claimed in claim 8 wherein also comprises a grounding electrode that links to each other with each described first heater wire and each described second heater wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100013012A CN100421277C (en) | 2004-01-06 | 2004-01-06 | Organic light-emitting diode panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100013012A CN100421277C (en) | 2004-01-06 | 2004-01-06 | Organic light-emitting diode panel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1641902A CN1641902A (en) | 2005-07-20 |
| CN100421277C true CN100421277C (en) | 2008-09-24 |
Family
ID=34867091
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100013012A Expired - Fee Related CN100421277C (en) | 2004-01-06 | 2004-01-06 | Organic light-emitting diode panel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100421277C (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6127783A (en) * | 1998-12-18 | 2000-10-03 | Philips Electronics North America Corp. | LED luminaire with electronically adjusted color balance |
| WO2002047438A2 (en) * | 2000-12-07 | 2002-06-13 | Koninklijke Philips Electronics N.V. | Led luminary system |
| CN1443304A (en) * | 2000-12-27 | 2003-09-17 | 皇家菲利浦电子有限公司 | Luminaire with multicolored array of LEDS |
-
2004
- 2004-01-06 CN CNB2004100013012A patent/CN100421277C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6127783A (en) * | 1998-12-18 | 2000-10-03 | Philips Electronics North America Corp. | LED luminaire with electronically adjusted color balance |
| WO2002047438A2 (en) * | 2000-12-07 | 2002-06-13 | Koninklijke Philips Electronics N.V. | Led luminary system |
| CN1443304A (en) * | 2000-12-27 | 2003-09-17 | 皇家菲利浦电子有限公司 | Luminaire with multicolored array of LEDS |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1641902A (en) | 2005-07-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9508285B2 (en) | Pixel array, metal mask, electro optical device and electric apparatus | |
| CN100530752C (en) | Organic electro luminescence device and fabrication method thereof | |
| US9989823B2 (en) | Array substrate and display panel | |
| CN100461979C (en) | Organic electroluminescence display device and its mfg. method | |
| TWI702455B (en) | Electroluminescence display device | |
| US9543368B2 (en) | OLED array substrate having black matrix, manufacturing method and display device thereof | |
| TWI413441B (en) | Pixel structure and electroluminescence device | |
| US7760165B2 (en) | Control circuit for stacked OLED device | |
| KR101158873B1 (en) | Oled | |
| US20110148290A1 (en) | Organic el display and method of manufacturing the same | |
| US10032403B2 (en) | Electro optical device, electric apparatus and pixel rendering method | |
| US20090108741A1 (en) | Organic el display device and method of manufacturing the same | |
| KR100904523B1 (en) | Thin Film Transistor for Active Matrix type Organic Light Emitting Diode Device | |
| CN102938411A (en) | Full-color active matrix organic light emitting display with hybrid | |
| CN101777576B (en) | Pixel structure and electroluminescence device | |
| JP2006244892A (en) | Active-matrix organic el device array | |
| JP2019186384A (en) | Display device and manufacturing method of display device | |
| TW201931592A (en) | Electroluminescent display device | |
| KR20060112963A (en) | Flat panel display apparatus | |
| US7692379B2 (en) | Display device with reflective structure for improved light emission | |
| WO2018107736A1 (en) | Display panel and display device | |
| US20060114190A1 (en) | Active matrix organic electro-luminescence device array | |
| KR20100041314A (en) | Organic light emitting diodes display | |
| US7183700B2 (en) | Organic light emitting diode display having red, blue, and green colors emitted using heating circuit structure | |
| KR100482328B1 (en) | Active Matrix Organic Electro-Luminescence Display Panel And Method Of Fabricating The Same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080924 Termination date: 20190106 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |