CN102230591A - Backlight module - Google Patents
Backlight module Download PDFInfo
- Publication number
- CN102230591A CN102230591A CN2011102035726A CN201110203572A CN102230591A CN 102230591 A CN102230591 A CN 102230591A CN 2011102035726 A CN2011102035726 A CN 2011102035726A CN 201110203572 A CN201110203572 A CN 201110203572A CN 102230591 A CN102230591 A CN 102230591A
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- China
- Prior art keywords
- brightening piece
- lgp
- light
- face
- brightening
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Links
- 238000009792 diffusion process Methods 0.000 claims abstract description 16
- 238000005282 brightening Methods 0.000 claims description 76
- 239000003292 glue Substances 0.000 claims description 9
- 230000000694 effects Effects 0.000 abstract description 7
- 239000004973 liquid crystal related substance Substances 0.000 abstract description 5
- 238000012937 correction Methods 0.000 abstract description 2
- 230000007547 defect Effects 0.000 abstract 1
- 230000000007 visual effect Effects 0.000 abstract 1
- 241000254158 Lampyridae Species 0.000 description 12
- 230000002950 deficient Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
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Abstract
The invention provides a backlight module which comprises a light guide plate, a plurality of light sources, a diffusion film, a first brightness enhancement film and a second brightness enhancement film. The invention can completely overcome the defects of the prior art. Because dot correction is not made among a plurality of light sources, the guiding effect of the second brightness enhancement film to light rays is avoided by arranging the position of the second brightness enhancement film. The backlight module can be applied to an LED liquid crystal module, the visual effect of the LED liquid crystal module is improved, and the performance of a liquid crystal television is optimized. Moreover, errors generated in assembly and deviations occurring in printing positioning can not affect the effect generated by the backlight module.
Description
Technical field
The present invention relates to a kind of module backlight, relate in particular to a kind of module backlight that weakens the firefly phenomenon that bright dark situation causes.
Background technology
Along with China LED LCD TV demand sharply rises violently, the development of LED-backlit module field is swift and violent, consider from the angle of energy-saving and environmental protection, cost, a number of LED lamp reduces gradually, develop into present one-sided light inlet by before four side light inlets, and save DBEF (Dual Brightness Enhancement Film, polarization type blast sheet) diaphragm, and brightness need reach requirement, so need to adopt two BEF diaphragm (Brightness Enhancement Film, the blast sheet), but this moment module backlight the firefly phenomenon become more obvious.
With the existing firefly technology of separating, if add the lamp limited amount, separating of firefly must not reach best, and cost increases; If adopt light guide plate mesh point correcting process between lamp and the lamp, two aspects then can occur to problem: 1. the certain interval value can be reserved in general backboard reference column and LGP reference column draw-in groove position, LGP promptly can occur and can move left and right necessarily arrive distance, about general 0.2mm, other adds that assembly error and backboard tolerance cause the skew of Corrections Division position, site, more serious firefly phenomenon occurs; 2. in LGP printing net-point process, owing to print the board technical limitations at present, can't guarantee that also net-point printing and design attitude are in full accord, it is uneven that this problem meeting LGP firefly solves, it is helpful to the firefly solution to locate slightly good meeting, and more serious firefly phenomenon can appear in location slightly partially.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, the invention provides a kind of module backlight, comprise
One LGP, described LGP are provided with a light inlet side;
A plurality of light sources, described a plurality of light sources form a line and are parallel to the light inlet side of described LGP;
One diffusion sheet is arranged on the described LGP, and the side of described diffusion sheet is concordant with the light inlet side of described LGP;
First brightening piece, comprise first end face, first bottom surface and be connected in first side of described first end face and first bottom surface, described first end face and first bottom surface are oppositely arranged, described first end face is provided with a plurality of first prisms, described first brightening piece is arranged on the described diffusion sheet, first bottom surface of described first brightening piece is towards described diffusion sheet, first side of described first brightening piece is concordant with the light inlet side of described LGP, and the bearing of trend of first prism of described first brightening piece is parallel to the orientation of described light source;
Second brightening piece, comprise second end face, second bottom surface and be connected in second side of described two end faces and second bottom surface, described second end face and second bottom surface are oppositely arranged, described second end face is provided with a plurality of second prisms, described second brightening piece is arranged on described first brightening piece, and second bottom surface of described second brightening piece is towards described first brightening piece;
The bearing of trend of second prism of described second brightening piece is perpendicular to the bearing of trend of first prism of described first brightening piece, and the distance between first side of described first brightening piece and second side of described second brightening piece is 3.5 millimeters.
Further improvement of the present invention is, described module backlight is provided with the glue frame, and the pressure holding of described glue frame is in described second brightening piece, the pressure holding of described glue frame in the length of described second brightening piece more than or equal to 2 millimeters.
Further improvement of the present invention is, described diffusion sheet and described first brightening piece measure-alike.
Compared to prior art, the present invention can overcome the defective of prior art fully, because not having to do between corresponding a plurality of light source the site revises, by the second brightening piece position being set to avoid the guiding effect of second brightening piece to light, can be applicable to the LED liquid crystal module, promote looking of LED liquid crystal module and imitate taste, optimize the LCD TV performance.When light enters LGP by the light inlet side, if during LGP incidence surface or close together concordant with second side of second brightening piece, light can directly incide second brightening piece by light source direction, and second brightening piece has guide function to light, forms this bright secretly firefly that the division is clearly demarcated.By between second side with first side of first brightening piece and described second brightening piece determining deviation being set, when light directly enters LGP by the light inlet side, light can't directly be projected to second brightening piece, light has only by LGP and diffuses to first brightening piece and second brightening piece, this moment light since with the non-guiding direction of the angle of second brightening piece, so can avoid the generation of firefly.The present invention can overcome the defective of prior art fully, because not having to do between corresponding a plurality of light source the site revises, it only is the certain width size that contracts in second brightening piece with the top, to avoid the guiding effect of second brightening piece,, the sum of errors printing that produces in assembling location can not influence the effect that the present invention's module backlight produces so going up the deviation that occurs to light.
Description of drawings
Fig. 1 is the structural representation of the present invention's module backlight.
Fig. 2 is another structural representation of the present invention's module backlight.
The specific embodiment
The present invention is further described below in conjunction with description of drawings and the specific embodiment.
See also Fig. 1 and Fig. 2, the invention provides a kind of module backlight 10, comprise LGP 11, a plurality of light source 13, diffusion sheet 15, first brightening piece 17, second brightening piece 18.
LGP 11 is provided with a light inlet side 111; A plurality of light sources 13 form a line and are parallel to the light inlet side 111 of described LGP 11; One diffusion sheet 15 is arranged on the described LGP 11, and the side of described diffusion sheet 15 is concordant with the light inlet side 111 of described LGP 11;
First brightening piece 17 comprises first end face 171, first bottom surface 173 and be connected in first side 175 of described first end face 171 and first bottom surface 173, described first end face 171 and first bottom surface 173 are oppositely arranged, described first end face 171 is provided with a plurality of first prisms 177, described first brightening piece 17 is arranged on the described diffusion sheet 15, first bottom surface 173 of described first brightening piece 17 is towards described diffusion sheet 15, first side 175 of described first brightening piece 17 is concordant with the light inlet side 111 of described LGP 11, and the bearing of trend of first prism 177 of described first brightening piece 17 is parallel to the orientation of described light source 13;
Second brightening piece 18 comprises second end face 181, second bottom surface 183 and is connected in second side 185 of described second end face 181 and second bottom surface 183, described second end face 181 and second bottom surface 183 are oppositely arranged, described second end face 181 is provided with a plurality of second prisms 187, described second brightening piece 18 is arranged on described first brightening piece 17, and second bottom surface 183 of described second brightening piece 18 is towards described first brightening piece 17; The bearing of trend of second prism 187 of described second brightening piece 18 is perpendicular to the bearing of trend of first prism 177 of described first brightening piece 17, and the distance L between first side 175 of described first brightening piece 17 and second side 185 of described second brightening piece 18 is 3.5 millimeters.Described module backlight 10 also is provided with glue frame (figure do not show), and the pressure holding of described glue frame is in described second brightening piece 18, the pressure holding of described glue frame in the length of described second brightening piece 18 more than or equal to 2 millimeters.
When light enters LGP 11 by light inlet side 111, if second side 185 of LGP 11 incidence surfaces and second brightening piece 18 is concordant or during close together, light can directly incide second brightening piece 18 by light source 13 directions, 18 pairs of light of second brightening piece have guide function, form this bright secretly firefly that the division is clearly demarcated.By between second side 185 with first side 175 of first brightening piece 17 and described second brightening piece 18 determining deviation being set, when light directly enters LGP 11 by light inlet side 111, light can't directly be projected to second brightening piece 18, light has only by LGP 11 and diffuses to first brightening piece 17 and second brightening piece 18, this moment light since with the non-guiding direction of the angle of second brightening piece 18, so can avoid the generation of firefly.The present invention can overcome the defective of prior art fully, because not having to do between corresponding a plurality of light source 13 site revises, it only is the certain width size that contracts in second brightening piece 18 with the top, to avoid the guiding effect of 18 pairs of light of second brightening piece,, the sum of errors printing that produces in assembling location can not influence the effect that the present invention's module 10 backlight produces so going up the deviation that occurs.
Above content be in conjunction with concrete preferred implementation to further describing that the present invention did, can not assert that concrete enforcement of the present invention is confined to these explanations.For the general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.
Claims (3)
1. a module backlight is characterized in that: comprise
One LGP, described LGP are provided with a light inlet side;
A plurality of light sources, described a plurality of light sources form a line and are parallel to the light inlet side of described LGP;
One diffusion sheet is arranged on the described LGP, and the side of described diffusion sheet is concordant with the light inlet side of described LGP;
First brightening piece, comprise first end face, first bottom surface and be connected in first side of described first end face and first bottom surface, described first end face and first bottom surface are oppositely arranged, described first end face is provided with a plurality of first prisms, described first brightening piece is arranged on the described diffusion sheet, first bottom surface of described first brightening piece is towards described diffusion sheet, first side of described first brightening piece is concordant with the light inlet side of described LGP, and the bearing of trend of first prism of described first brightening piece is parallel to the orientation of described light source;
Second brightening piece, comprise second end face, second bottom surface and be connected in second side of described two end faces and second bottom surface, described second end face and second bottom surface are oppositely arranged, described second end face is provided with a plurality of second prisms, described second brightening piece is arranged on described first brightening piece, and second bottom surface of described second brightening piece is towards described first brightening piece;
The bearing of trend of second prism of described second brightening piece is perpendicular to the bearing of trend of first prism of described first brightening piece, and the distance between first side of described first brightening piece and second side of described second brightening piece is 3.5 millimeters.
2. according to the described module backlight of claim 1, it is characterized in that: described module backlight is provided with the glue frame, and the pressure holding of described glue frame is in described second brightening piece, the pressure holding of described glue frame in the length of described second brightening piece more than or equal to 2 millimeters.
3. according to the described module backlight of claim 1, it is characterized in that: described diffusion sheet and described first brightening piece measure-alike.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110203572.6A CN102230591B (en) | 2011-07-20 | 2011-07-20 | Backlight module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110203572.6A CN102230591B (en) | 2011-07-20 | 2011-07-20 | Backlight module |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102230591A true CN102230591A (en) | 2011-11-02 |
| CN102230591B CN102230591B (en) | 2015-10-28 |
Family
ID=44843188
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110203572.6A Active CN102230591B (en) | 2011-07-20 | 2011-07-20 | Backlight module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102230591B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111580306A (en) * | 2020-05-27 | 2020-08-25 | 常州泉晋光电有限公司 | Backlight module convenient to assemble and good in heat dissipation effect |
| WO2021208638A1 (en) * | 2020-04-17 | 2021-10-21 | 京东方科技集团股份有限公司 | Dimming assembly, backlight module, and liquid crystal display device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6151169A (en) * | 1998-05-20 | 2000-11-21 | Lg Electronics, Inc. | Sheet type optical device and backlighting unit using the same |
| JP2004213019A (en) * | 2003-01-03 | 2004-07-29 | Samsung Electronics Co Ltd | Light guide method and its system, and back light assembly having the same and liquid crystal display device |
| CN2916696Y (en) * | 2006-05-12 | 2007-06-27 | 长兴化学工业股份有限公司 | Straight-down backlight module |
| JP2009008784A (en) * | 2007-06-27 | 2009-01-15 | Sharp Corp | Back light unit, display device and electronic equipment |
| KR20090014495A (en) * | 2007-08-06 | 2009-02-11 | 엘지이노텍 주식회사 | Backlight unit and display apparatus |
| CN100535508C (en) * | 2006-06-02 | 2009-09-02 | 索尼株式会社 | Backlight device, liquid crystal display device, and electronic apparatus using liquid crystal display device |
| KR100931405B1 (en) * | 2008-02-22 | 2009-12-11 | 주식회사 명성디엠아이 | LGP manufacturing device for LCD |
-
2011
- 2011-07-20 CN CN201110203572.6A patent/CN102230591B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6151169A (en) * | 1998-05-20 | 2000-11-21 | Lg Electronics, Inc. | Sheet type optical device and backlighting unit using the same |
| JP2004213019A (en) * | 2003-01-03 | 2004-07-29 | Samsung Electronics Co Ltd | Light guide method and its system, and back light assembly having the same and liquid crystal display device |
| CN2916696Y (en) * | 2006-05-12 | 2007-06-27 | 长兴化学工业股份有限公司 | Straight-down backlight module |
| CN100535508C (en) * | 2006-06-02 | 2009-09-02 | 索尼株式会社 | Backlight device, liquid crystal display device, and electronic apparatus using liquid crystal display device |
| JP2009008784A (en) * | 2007-06-27 | 2009-01-15 | Sharp Corp | Back light unit, display device and electronic equipment |
| KR20090014495A (en) * | 2007-08-06 | 2009-02-11 | 엘지이노텍 주식회사 | Backlight unit and display apparatus |
| KR100931405B1 (en) * | 2008-02-22 | 2009-12-11 | 주식회사 명성디엠아이 | LGP manufacturing device for LCD |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021208638A1 (en) * | 2020-04-17 | 2021-10-21 | 京东方科技集团股份有限公司 | Dimming assembly, backlight module, and liquid crystal display device |
| US11892673B2 (en) | 2020-04-17 | 2024-02-06 | Fuzhou Boe Optoelectronics Technology Co., Ltd. | Dimming assembly, backlight module, and liquid crystal display device |
| CN111580306A (en) * | 2020-05-27 | 2020-08-25 | 常州泉晋光电有限公司 | Backlight module convenient to assemble and good in heat dissipation effect |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102230591B (en) | 2015-10-28 |
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| C14 | Grant of patent or utility model | ||
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| TR01 | Transfer of patent right |
Effective date of registration: 20200630 Address after: 23 / F, Guangdong hi tech District Patentee after: Shenzhen Konka Holding Group Co., Ltd Address before: 518000 overseas Chinese town, Shenzhen, Guangdong, Nanshan District Patentee before: KONKA GROUP Co.,Ltd. |