CN101989002B - Liquid crystal display panel - Google Patents
Liquid crystal display panel Download PDFInfo
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- CN101989002B CN101989002B CN2009101636051A CN200910163605A CN101989002B CN 101989002 B CN101989002 B CN 101989002B CN 2009101636051 A CN2009101636051 A CN 2009101636051A CN 200910163605 A CN200910163605 A CN 200910163605A CN 101989002 B CN101989002 B CN 101989002B
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Abstract
The invention relates to a liquid crystal display panel which comprises a plurality of scanning lines and a plurality of pixels, wherein each scanning line is provided with a signal input end and each pixel comprises a gate electrode, a drain electrode, an extension electrode and a coupling capacitor. The extension electrode is an extending part of the drain electrode and is not overlapped with the gate electrode. The coupling capacitor is coupled between the extension electrode and the scanning line corresponding to the extension electrode and arranged on the same scanning line, and the capacitance value of the coupling capacitor is increased with the increase of the distance from each extension electrode to the signal input end corresponding to the extension electrode.
Description
Technical field
The invention relates to a kind of display panels, refer to a kind of display panels that does not have the film flicker problem especially.
Background technology
Display panels (thin film transistor LCD) mainly is the thin film transistor (TFT) that utilizes into rectangular arrangement, cooperates suitable electronic package to drive liquid crystal pixel, enriches beautiful figure with generation.Because display panels has that external form is frivolous, power consumption is few and characteristic such as radiationless pollution; Therefore be widely used on the portable type information products such as mobile computer (notebook), PDA(Personal Digital Assistant), even the existing trend that replaces the cathode ray tube (CRT) monitor of traditional desktop PC gradually.
Please refer to Fig. 1 and Fig. 2, Fig. 1 is the synoptic diagram of known display panels, and Fig. 2 is the schematic equivalent circuit of each pixel of known display panels.As shown in Figure 1; Display panels 10 includes crystal layer (figure does not show), a plurality of sweep traces 16, a plurality of data lines 18 and a plurality of pixel 20 of one first substrate 12, one second substrate 14, a liquid; Wherein a plurality of sweep traces 16 are arranged on first substrate 12 with a plurality of data lines 18, and wantonly two adjacent sweep traces 16 define a pixel 20 with wantonly two adjacent data lines 18.In addition; Display panels 10 comprises a plurality of grid drive chip 22 and plurality of data chip for driving 24 in addition; Be arranged on first substrate 12; And grid drive chip 22 is signal input parts 26 that are electrically connected to each sweep trace 16, and data driving chip 24 is to be electrically connected to data line 18.As shown in Figure 2, each pixel 20 includes a thin film transistor (TFT) 28, a coupling capacitance Cgd, a liquid crystal capacitance Clc and a storage capacitors Cs.Coupling capacitance Cgd is the gate electrode 30 and the drain electrode 32 mutual stray capacitances that are coupled and produced by thin film transistor (TFT) 28.Liquid crystal capacitance Clc then is made up of common electrode 34 and the liquid crystal layer that a pixel electrode 33, of each pixel 20 is arranged on second substrate 14.Storage capacitors Cs by pixel electrode 33 and be arranged at common line 36 on first substrate intercouple produce.In addition, the source electrode 38 of thin film transistor (TFT) 28 is to be electrically connected to corresponding data line 18, and gate electrode 32 is electrically connected to corresponding sweep trace 16, and drain electrode 32 is electrically connected to pixel electrode 33.
When display panels 10 began to show, grid drive chip 22 can be sent to each sweep trace 16 with signal in regular turn, opened each thin film transistor (TFT) 28 via sweep trace 16 again.When each thin film transistor (TFT) 28 received signal, data driving chip 24 can begin to be stored in drain electrode 32 and pixel electrode via the picture element signal that each data line 18 is sent to the source electrode 38 of each thin film transistor (TFT) 28.Then, stop to transmit signal.This moment, picture element signal can rest on pixel electrode, and demonstrated the desire picture displayed.In procedure for displaying; Because the voltage of gate electrode 30 voltage difference that can descend from transmit signal to the process that stops to transmit signal; And gate electrode 30 is to be coupled in drain electrode 32 by coupling capacitance, so the voltage of pixel electrode also can receive the influence that the voltage of gate electrode 30 descends and descends when stopping to transmit signal.The change in voltage of this pixel electrode is called feeder stream voltage (feed-through voltage); Can calculate by formula Δ Vp=[(Cgd)/(Clc+Cs+Cgd)] * Δ Vg; Wherein Δ Vp is the voltage variety of pixel electrode, and Δ Vg is the voltage variety of gate electrode 30.
Therefore; Because each sweep trace can be considered by a plurality of resistance in series and constitutes; And add the capacity effect of coupling capacitance, liquid crystal capacitance and storage capacitors; Make signal when the signal input part of sweep trace is sent to end, can receive the influence of RC effect, and change corners the is arranged waveform of (rounded) into, make the terminal pixel of range sweep line have the not enough phenomenon of voltage charging of pixel electrode easily from rectangular wave.And; Because the voltage variety Δ Vg of gate electrode receives the influence of RC effect; Therefore can know that according to the formula of feeder stream voltage the pixel that is positioned on the same sweep trace also can have the voltage variety of pixels with different electrode; Thereby obtain wrong picture element signal easily, and then cause the situation of desiring picture displayed luminance shortage or film flicker (flicker) to take place.
Summary of the invention
Fundamental purpose of the present invention is to provide a kind of display panels, in order to solve the problem of display frame luminance shortage or film flicker.
For reaching above-mentioned purpose, the present invention discloses a kind of display panels, and it comprises a substrate, a plurality of sweep traces, a plurality of data lines and a plurality of pixel.Sweep trace, data line and pixel are arranged on the substrate, and each sweep trace has a signal input part.Each pixel is defined with wantonly two adjacent data lines by wantonly two adjacent sweep traces, and each pixel comprises a gate electrode, a gate insulator, semi-conductor layer, a drain electrode, one source pole electrode, an extension electrode, a pixel electrode and one first coupling capacitance.Gate electrode is arranged on the substrate, and is electrically connected to corresponding sweep trace.Gate insulator is arranged on gate electrode and the substrate, and semiconductor layer is arranged on the gate insulator.Drain electrode and source electrode are arranged on semiconductor layer and the gate insulator, and source electrode is electrically connected to corresponding data line.Extension electrode is arranged on the substrate, and extension electrode is an extension of drain electrode, and extension electrode is electrically connected to drain electrode and does not overlap with gate electrode.Pixel electrode is arranged on the substrate, and is electrically connected to drain electrode.First coupling capacitance is to be coupled between extension electrode and the corresponding sweep trace; Wherein on same sweep trace, the capacitance of first coupling capacitance that each extension electrode and corresponding sweep trace produce is along with the distance between each extension electrode and corresponding signal input part increases and increases.
The present invention utilizes the part of the extension drain electrode of each pixel to form an extension electrode; And be coupled with corresponding sweep trace and produce a coupling capacitance; And then the capacitance that makes coupling capacitance is along with the distance between each extension electrode and signal input part increases and increases, to solve the problem of picture brightness deficiency or film flicker.
Description of drawings
Fig. 1 is the synoptic diagram of known display panels.
Fig. 2 is the schematic equivalent circuit of each pixel of known display panels.
Fig. 3 is for looking synoptic diagram on the display panels of the present invention.
Fig. 4 looks synoptic diagram for the display panels of first embodiment of the invention on the pixel of same sweep trace.
Fig. 5 is the diagrammatic cross-section of the display panels of first embodiment of the invention along AA ' line.
Fig. 6 is the schematic equivalent circuit of display panels on same sweep trace of first embodiment of the invention.
Fig. 7 looks synoptic diagram for the display panels of second embodiment of the invention on the pixel of same sweep trace.
Fig. 8 looks synoptic diagram for the display panels of third embodiment of the invention on the pixel of same sweep trace.
Fig. 9 is for looking synoptic diagram on the display panels of fourth embodiment of the invention.
Embodiment
Please refer to Fig. 3, Fig. 3 is for looking synoptic diagram on the display panels of the present invention.As shown in Figure 3, display panels 100 comprises one first substrate 102, one second substrate 104, a liquid crystal layer (figure does not show), a plurality of sweep traces 106, a plurality of data lines 108 and a plurality of pixel 110.Second substrate 104 is a colored filter substrate, and is set in parallel on first substrate 102, and second substrate 104 has a common electrode (figure do not show) and is arranged at second substrate 104 in the face of on the side of first substrate 102.Liquid crystal layer is to be arranged between first substrate 102 and second substrate 104.Sweep trace 106, data line 108 all is to be arranged on first substrate 102 with pixel 110, and each pixel 110 defines by wantonly two adjacent sweep traces 106 and wantonly two 108 adjacent of data lines, and each sweep trace 106 has a signal input part 112.In addition; Display panels 100 comprises a plurality of grid drive chip 114 and plurality of data line chip for driving 116 in addition; Be arranged on first substrate 102; And grid drive chip 114 is signal input parts 112 that electric wire is connected in sweep trace 106, in order to signal is sent to sweep trace 106.Data driving chip 116 is electrically connected at data line 108, in order to picture element signal is sent to data line 108.In addition, the display panels of present embodiment is example with storage capacitors in the aspect of common online (Cs on common), but the present invention is not as limit.Display panels 100 comprises a plurality of common lines 117 in addition, is arranged on first substrate 102.
In order more to clearly demonstrate dot structure of the present invention, below will describe to the pixel of same sweep trace.Please in the lump with reference to figure 3, Fig. 4 and Fig. 5, Fig. 4 looks synoptic diagram for the display panels of first embodiment of the invention on the pixel of same sweep trace, and Fig. 5 is the diagrammatic cross-section of the display panels of first embodiment of the invention along AA ' line.Shown in Figure 5 like Fig. 4, each pixel 110 of display panels 100 comprises a gate electrode 118, a gate insulator 120, semi-conductor layer 122, a drain electrode 124, one source pole electrode 126, an extension electrode 128, a protective seam 130 and a pixel electrode 132.Gate electrode 118 is arranged on first substrate 102, and is electrically connected to corresponding sweep trace 106.Gate insulator 120 is arranged on the gate electrode 118 and first substrate 102, and semiconductor layer 122 is arranged on the gate insulator 120.Drain electrode 124 is arranged on semiconductor layer 122 and the gate insulator 120 with source electrode 126, and source electrode 126 is electrically connected to corresponding data line 108.Gate electrode 118, gate insulator 120, semiconductor layer 122, drain electrode 124 and source electrode 126 are to constitute a thin film transistor (TFT) 130.Pixel electrode 132 is to be arranged on first substrate 102, and is electrically connected to drain electrode 124.In addition; Extension electrode 128 is arranged on first substrate 102, and extension electrode 128 is electrically connected to drain electrode 124, and it should be noted that; Extension electrode 128 is an extension of drain electrode 124; And be with one deck metal level, and be adjacent to corresponding sweep trace 106, extension electrode 128 and corresponding sweep trace 106 are coupled to produce one first coupling capacitance Cgd1.
In present embodiment; Each extension electrode 128 is the outsides that are arranged at corresponding thin film transistor (TFT) 130; And overlap, and each extension electrode 128 is parallel with corresponding sweep trace 106, makes the first coupling capacitance Cgd1 become a lateral capacitance with gate electrode 118 and sweep trace 106.It should be noted that; On same sweep trace 106; The area that is coupled by each extension electrode 128 and corresponding sweep trace 106 is that the distance along with 112 of each extension electrode 128 and corresponding signal input parts increases and increases, that is and the be coupled capacitance of the first coupling capacitance Cgd1 that produced of corresponding sweep trace 106 be along with the distance increase of 112 of each extension electrode 128 and corresponding signal input parts and increase.The area increase that each extension electrode 128 and the corresponding sweep trace 106 of present embodiment is coupled is by the length of each extension electrode 128 of prolongation along sweep trace 106, but is not limited thereto.In addition, each pixel electrode 132 is to overlap with corresponding common line 117 parts, thereby is coupled to produce a storage capacitors Cs mutually.And; Each gate electrode 118 is to have one second to overlap regional 134 with corresponding drain electrode 124; Make each gate electrode 118 and corresponding drain electrode 124 couplings produce one second coupling capacitance Cgd2, and this second coupling capacitance Cgd2 is a vertical electric capacity.
Below will further specify present embodiment by increasing the problem that extension electrode solves picture brightness deficiency or film flicker.Please refer to Fig. 6, and in the lump with reference to figure 3, Fig. 4 and Fig. 5.Fig. 6 is the schematic equivalent circuit of display panels on same sweep trace of first embodiment of the invention.To shown in Figure 6, each pixel packets contains a liquid crystal capacitance Clc, a storage capacitors Cs, one first coupling capacitance Cgd1 and one second coupling capacitance Cgd2 like Fig. 4.The liquid crystal cells that liquid crystal capacitance Clc is made up of pixel electrode 132, common electrode 136 and liquid crystal layer 138 produces.The storage capacitors Cs of present embodiment is coupled between pixel electrode 132 and the corresponding common line 117.In addition, the first coupling capacitance Cgd1 is coupled between each extension electrode 128 and the corresponding sweep trace 106, and the second coupling capacitance Cgd2 is coupled between each gate electrode 118 and the corresponding drain electrode 124.And gate electrode 118 is prosperous to be electrically connected to corresponding sweep trace 106, and source electrode 126 is electrically connected to corresponding data line 108, and drain electrode 124 is electrically connected to the pixel electrode 132 of liquid crystal capacitance Clc.
Hence one can see that; The formula that present embodiment calculates feeder stream voltage (feed-through voltage) is Δ Vp=[(Cgd1+Cgd2)/(Clc+Cs+Cgd1+Cgd2)] * Δ Vg; Wherein Δ Vp is the feeder stream voltage of each pixel 110, and Δ Vg is the voltage variety of each gate electrode 118.And; Storage capacitors Cs and liquid crystal capacitance Clc all are about the first coupling capacitance Cgd1 and the second coupling capacitance Cgd2 tens of times; That is to say, Cs, Clc＞＞Cgd1, Cgd2, can be Δ Vp=[(Cgd1+Cgd2)/(Clc+Cs)] * Δ Vg therefore with simplified formula.In present embodiment, because the pixel electrode 132 of each pixel 110 is rough identical with the overlapping area of corresponding common line 117, so storage capacitors Cs all has identical capacitance substantially.And the liquid crystal capacitance Clc of each pixel 110 of present embodiment is also all identical substantially, and the second coupling capacitance Cgd2 of each pixel 110 all has identical capacitance substantially.If consider the RC effect of sweep trace 106, represent that promptly the voltage variety Δ Vg of each gate electrode 118 can increase along with the distance of 112 of each gate electrode 118 and corresponding signal input parts and reduce, feeder flows voltage Δ Vp then may be along with decline.Yet; It should be noted that; Present embodiment is coupled with corresponding sweep trace 106 by extension electrode 128 is set in each pixel 110; To produce the first coupling capacitance Cgd1, therefore according to the feeder stream voltage equation of present embodiment, the feeder stream voltage Δ Vp of each pixel 110 can be rough identical by the capacitance of the adjustment first coupling capacitance Cgd1.In present embodiment; Display panels 100 is to make area that each extension electrode 128 and corresponding sweep trace 106 be coupled along with the distance of 112 of each extension electrode 128 and corresponding signal input parts increases and increases; The voltage variety Δ Vg that therefore can compensate each gate electrode 118 increases along with the distance of 112 of each gate electrode 118 and corresponding signal input parts and the difference that reduces, and then the problem of solution picture brightness deficiency or film flicker.In addition; The second coupling capacitance Cgd2 of the present invention is not limited to have identical capacitance; The second coupling capacitance Cgd2 also can increase along with the distance of 112 of each extension electrode 128 and corresponding signal input parts and increase, to increase the voltage variety of each gate electrode 118 of compensation.
Yet display panels of the present invention is not limited to each extension electrode of the foregoing description and area that corresponding sweep trace is coupled along with the distance between each extension electrode and corresponding signal input part increases and increases.In order to be easy to the difference between each embodiment of comparison, the modular construction that following embodiment is identical with first embodiment will use same numeral, and the part of same structure will repeat no more.Please in the lump with reference to figure 3 and Fig. 7, Fig. 7 looks synoptic diagram for the display panels of second embodiment of the invention on the pixel of same sweep trace.As shown in Figure 7; Compared to first embodiment; In the display panels 150 of present embodiment; The distance that is positioned at 106 of each extension electrode 128 and corresponding sweep traces on the same sweep trace 106 is that the distance along with 112 of each extension electrode 128 and corresponding signal input parts increases and reduces; And each extension electrode 128 in same sweep trace 106 is rough identical with the area that corresponding sweep trace 106 is coupled, that is each extension electrode 128 can't increase and change along with the distance of 112 of each extension electrode 128 and corresponding signal input parts along the length of sweep trace 106.Present embodiment be the distance of 106 of adjustment each extension electrode 128 and corresponding sweep traces reach the first coupling capacitance Cgd1 that desired can along with 112 of each extension electrode 128 and corresponding signal input parts apart from increase and increase.By this, also can compensate the difference of the voltage variety minimizing of gate electrode 118.
In addition, extension electrode of the present invention is not limited to partly not overlap with sweep trace, and extension electrode and corresponding sweep trace are partly overlapped, and then adjustment coupling capacitance therebetween.Please in the lump with reference to figure 3 and Fig. 8, Fig. 8 looks synoptic diagram for the display panels of third embodiment of the invention on the pixel of same sweep trace.As shown in Figure 8; Compared to first embodiment; Each extension electrode 128 of the display panels 200 of present embodiment is to have one first with corresponding sweep trace 106 to overlap regional 202; Make the first coupling capacitance Cgd1 become a vertical electric capacity, and each first overlap zone 202 area be along with the distance increase of 112 of each extension electrode 128 and corresponding signal input parts and increase.
In addition, the present invention is not limited to be used for the aspect of storage capacitors on common electrode, and display panels of the present invention also can be storage capacitors aspect of (Cs on gate) on gate electrode.Please in the lump with reference to figure 3 and Fig. 9, Fig. 9 is for looking synoptic diagram on the display panels of fourth embodiment of the invention.As shown in Figure 9; Compared to first embodiment; The storage capacitors Cs of each pixel 110 of the display panels 250 of present embodiment is coupled between pixel electrode 132 and the corresponding sweep trace 106, and the pixel electrode 132 of also representing each pixel 110 is to overlap with corresponding sweep trace 106 parts.
In sum; The present invention utilizes the part of the extension drain electrode of each pixel to form an extension electrode; And be coupled with corresponding sweep trace and produce a coupling capacitance; And then adjust the coupling capacitance of each pixel, the capacitance that makes coupling capacitance is along with the distance between each extension electrode and signal input part increases and increases.The voltage variety that can compensate each gate electrode by this makes the problem of picture brightness deficiency or film flicker be able to solve along with the distance between each gate electrode and corresponding signal input part increases and the difference of minimizing.
The above is merely preferred embodiment of the present invention, and all equalizations of doing according to claim of the present invention change and modify, and all should belong to covering scope of the present invention.
Claims (10)
1. display panels, it comprises:
One substrate;
A plurality of sweep traces are arranged on this substrate, and respectively this sweep trace has a signal input part;
A plurality of data lines are arranged on this substrate; And
A plurality of pixels, respectively this pixel is to be defined with wantonly two these adjacent a plurality of data lines by wantonly two these adjacent a plurality of sweep traces, and respectively this pixel comprises:
One gate electrode is arranged on this substrate, and is electrically connected to wherein of above-mentioned wantonly two adjacent these a plurality of sweep traces;
One gate insulator is arranged on this gate electrode and this substrate;
Semi-conductor layer is arranged on this gate insulator;
One drain electrode and one source pole electrode are arranged on this semiconductor layer and this gate insulator, and this source electrode is electrically connected to corresponding this data line;
One extension electrode is arranged on this substrate, and this extension electrode is an extension of this drain electrode, and this extension electrode is electrically connected to this drain electrode and does not overlap with this gate electrode;
One pixel electrode is arranged on this substrate, and is electrically connected to this drain electrode; And
One first coupling capacitance is coupled between this sweep trace of this extension electrode and above-mentioned gate electrode electric connection;
Wherein on same sweep trace, respectively the capacitance of this first coupling capacitance of producing of this sweep trace of electrically connecting of this extension electrode and above-mentioned gate electrode is along with the distance increase between this extension electrode and corresponding this signal input part respectively and increase.
2. display panels as claimed in claim 1 is characterized in that, this extension electrode does not overlap with these a plurality of sweep traces, and respectively this extension electrode is parallel with the sweep trace that above-mentioned gate electrode electrically connects, and makes this first coupling capacitance become a lateral capacitance.
3. display panels as claimed in claim 2; It is characterized in that; On same sweep trace, respectively the area that is coupled of this extension electrode and corresponding this sweep trace is to increase and increase along with the distance between this extension electrode and corresponding this signal input part respectively.
4. display panels as claimed in claim 2 is characterized in that, on same sweep trace, respectively the distance between this extension electrode and corresponding this sweep trace is to increase and reduce along with the distance between this extension electrode and corresponding this signal input part respectively.
5. display panels as claimed in claim 1 is characterized in that, respectively this sweep trace of this extension electrode and above-mentioned gate electrode electric connection has one first overlapping zone, makes this first coupling capacitance become a vertical electric capacity.
6. display panels as claimed in claim 5 is characterized in that, respectively this first overlap the zone area be along with the distance increase between this extension electrode and corresponding this signal input part respectively and increase.
7. display panels as claimed in claim 1 is characterized in that, respectively this pixel comprises one second coupling capacitance in addition, is coupled in respectively between this gate electrode and corresponding this drain electrode.
8. display panels as claimed in claim 7 is characterized in that, these a plurality of second coupling capacitances have identical capacitance; And
Respectively this gate electrode and corresponding this drain electrode are to have one second overlapping zone, and making respectively, this second coupling capacitance becomes a vertical electric capacity.
9. display panels as claimed in claim 1 is characterized in that respectively this pixel comprises a storage capacitors in addition, is coupled between another sweep trace of this pixel electrode respectively and above-mentioned wantonly two adjacent these a plurality of sweep traces.
10. display panels as claimed in claim 1 is characterized in that, also comprises a plurality of common lines, be arranged on this substrate, and respectively this pixel comprises a storage capacitors in addition, is coupled in respectively this pixel electrode and corresponding respectively between this common line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101636051A CN101989002B (en) | 2009-07-30 | 2009-07-30 | Liquid crystal display panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101636051A CN101989002B (en) | 2009-07-30 | 2009-07-30 | Liquid crystal display panel |
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| CN101989002A CN101989002A (en) | 2011-03-23 |
| CN101989002B true CN101989002B (en) | 2012-06-27 |
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| CN2009101636051A Active CN101989002B (en) | 2009-07-30 | 2009-07-30 | Liquid crystal display panel |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109448635B (en) * | 2018-12-06 | 2020-10-16 | 武汉华星光电半导体显示技术有限公司 | OLED display panel |
| CN109817667B (en) * | 2019-01-22 | 2021-02-02 | 武汉华星光电半导体显示技术有限公司 | OLED display panel and OLED display device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1971910A (en) * | 2005-11-22 | 2007-05-30 | 奇美电子股份有限公司 | LCD apparatus, pixel array base plate and method for preventing flicker of display panel |
| US7362391B2 (en) * | 2000-07-24 | 2008-04-22 | Lg.Philips Lcd Co., Ltd. | In-plane switching LCD device |
| CN101256327A (en) * | 2008-03-14 | 2008-09-03 | 上海广电光电子有限公司 | Lcd |
-
2009
- 2009-07-30 CN CN2009101636051A patent/CN101989002B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7362391B2 (en) * | 2000-07-24 | 2008-04-22 | Lg.Philips Lcd Co., Ltd. | In-plane switching LCD device |
| CN1971910A (en) * | 2005-11-22 | 2007-05-30 | 奇美电子股份有限公司 | LCD apparatus, pixel array base plate and method for preventing flicker of display panel |
| CN101256327A (en) * | 2008-03-14 | 2008-09-03 | 上海广电光电子有限公司 | Lcd |
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Effective date of registration: 20230515 Address after: No. two, No. 1188 West Ring Road, Shengze Town, Wujiang District, Jiangsu, Suzhou Patentee after: Suzhou Shengze science and Technology Pioneer Park Development Co.,Ltd. Address before: 215217, No. 88, Tung Hing Road, Tongli District, Wujiang Economic Development Zone, Suzhou, Jiangsu Patentee before: CPTW (WUJIANG) Co.,Ltd. Patentee before: Chunghwa Picture Tubes, Ltd. |