CN101149517A - Backlight module and liquid crystal display - Google Patents
Backlight module and liquid crystal display Download PDFInfo
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- CN101149517A CN101149517A CNA2006101388880A CN200610138888A CN101149517A CN 101149517 A CN101149517 A CN 101149517A CN A2006101388880 A CNA2006101388880 A CN A2006101388880A CN 200610138888 A CN200610138888 A CN 200610138888A CN 101149517 A CN101149517 A CN 101149517A
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- backlight module
- lcd
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Abstract
There is a sort of back-light module which is used for the liquid crystal display, and it consists of the noumenon of the back-light module, the first frame and the lightproof board. The first frame is used for nipping the noumenon of the back-light, and the first frame has the loading board in order to load the liquid crystal display board. The side wall of the loading board connects with the bulge, but the lightproof board is fixed above the bulge of the first frame and it bulge out the bulge. According to this design of the back-light module, it not only offers the power that the liquid crystal display board needs, but also prevents the non display space of the liquid crystal display board from producing the bright light.
Description
Technical field
The present invention relates to a kind of planar light source device, relate in particular to a kind of backlight module and use its LCD.
Background technology
Along with the progress of science and technology, it is frivolous that the volume of video or device for image day by day is tending towards.Traditional cathode-ray tube display (CRT) though still have its advantage, because the structure in internal electron chamber, makes that display is bulky and takes up space.Therefore, the flat-panel screens that cooperates photoelectric technology and semiconductor fabrication to be developed, for example LCD (LCD), organic light emitting display (OLED) or plasma display (Plasma Display Panel, PDP), become the main flow of display product gradually, and wherein be the main flow of present display product with LCD.
It should be noted that because display panels itself can't be luminous, so must provide display panels required area source, make LCD reach the effect of demonstration, and obtain enough brightness and contrast simultaneously by backlight module.Therefore the quality of backlight module design is enough to influence the display quality of LCD.
Fig. 1 illustrates a kind of partial section of known LCD.Please refer to Fig. 1, known LCD 50 comprises display panels 100 and backlight module 200, wherein backlight module 200 for example is a side lamp tube type backlight module, and it is disposed at display panels 100 belows, to provide display panels 100 required light source.Display panels 100 comprise thin-film transistor array base-plate 104, colored optical filtering substrates 108 and be disposed at thin-film transistor array base-plate 104 and colored optical filtering substrates 108 between liquid crystal layer 106.Be pasted with down polaroid 102 on the thin-film transistor array base-plate 104, and be pasted with polaroid 110 on the colored optical filtering substrates 108.
In addition, 200 of backlight modules comprise backlight module body 210, second framework 310 and first framework 320, second framework 310 is in order to carrying backlight module body 210, and first framework 320 is disposed on the backlight module body 210, and second framework and first framework 310,320 are used for clamping backlight module body 210.First framework 320 also can be in order to support display panels 100.Wherein, backlight module body 210 comprises reflex housing 202, light guide plate 204, fluorescent tube 206 and optical diaphragm group 208.Light guide plate 204 is disposed on second framework 310, and fluorescent tube 206 disposes in the reflex housings 202, and is positioned at a side of light guide plate 204.Optical diaphragm group 208 is disposed on the light guide plate 204, and optical diaphragm group 208 comprises diffusion sheet 208a, brightness enhancement film (Brightness Enhancement Film, BEF) 208b and upward diffusion sheet 208c down.Following diffusion sheet 208a is disposed on the light guide plate 204, and brightness enhancement film 208b is disposed between diffusion sheet 208c and the following diffusion sheet 208a.
Connect describedly, light guide plate 204 has a plurality of reflections site 204a, and these reflections site 204a is used to light scatter that fluorescent tube 206 is provided, so that light forms area sources by light guide plate 204 backs, with the display light source as display panels 100.In addition, optical diaphragm group 208 usefulness are so that the brightness of display light source is higher and more even.
In the known backlight module 200, first framework 320 has the supporting part 302 in order to carrying display panels 100, and the protuberance 304 that is connected with the sidewall 302a of supporting part 302, this protuberance 304 is the wedge shape protuberance, it is positioned at display panels 100 belows.
Among Fig. 1 A-A ' line right-hand be the viewing area of LCD 100, left then is a non-display area.Generally speaking, the edge of thin-film transistor array base-plate 104 is provided with metallic circuit 112, and it for example is gate driving line or source drive line, and this metallic circuit 112 is positioned at non-display area.In addition, colored optical filtering substrates 108 is provided with light shield layer 114, and part light shield layer 114 is positioned at non-display area.
In known LCD 50, the part light that fluorescent tube 206 is sent (as light B1, B2), can enter non-display area through behind the diffuser plate 204, and the metallic circuit 112 that is positioned at non-display area reflects, and general design has protuberance 304 to can be used to stop the light B2 that is reflected by metallic circuit 112, forms bright line or bright rays to prevent light B2 from reflexing on the diffuser plate 204.In addition, though protuberance 304 is used for shading, because the frequent stravismus LCD 50 of user, therefore except shading, use at protuberance 304 visual angles that the wedge-like portion of 45 degree are conducted to few 45 degree that also need to have an appointment, to make full use of the viewing area.Yet, because protuberance 304 is one-body molded with the injection molding method and first framework 320, be subjected to the thickness of the object of institute's moulding in the ejection forming technique up till now can't reach restriction below 0.5 millimeter, so almost can't form tapered end I, thereby part light (as light B1) still can be reflected onto on the diffuser plate 204, and forms bright line.If the user during with angle stravismus LCD 50, is very easy to bright line or the bright rays of seeing that part light B1 is caused on optical diaphragm group 208, thereby influence the display quality of LCD 50.
In the prior art, in order to stop above-mentioned reflection ray fully, available mode of printing is coated with light-absorption layer with absorption light in the part that diffuser plate 204 is positioned at non-display area, and then avoids the generation of bright line.Yet,, thereby increased the production cost of whole LCD 50 because printing cost is higher.In addition, it is stained also diffuser plate 204 to be subjected in the process of printing, makes the defect rate of diffuser plate 204 improve.
Summary of the invention
Therefore, the purpose of this invention is to provide a kind of backlight module, it can avoid light to form bright line at non-display area.
Another purpose of the present invention provides a kind of LCD, and the design of its backlight module can avoid light to form bright line at non-display area.
Based on above-mentioned and other purpose, the present invention proposes a kind of backlight module, is used to be configured in the display panels below, so that its required light source to be provided.This backlight module comprises backlight module body, first framework and shading piece.First framework is used for clamping backlight module body, and first framework has supporting part and protuberance, and wherein supporting part is used to carry display panels, and protuberance is connected with the sidewall of supporting part, and is positioned at the display panels below.Shading piece then is disposed on the protuberance of first framework, and protrudes from outside the protuberance.
The present invention also proposes a kind of LCD, and it comprises display panels and backlight module, and wherein backlight module is disposed at the below of display panels, so that its required light source to be provided.This backlight module comprises backlight module body, first framework and shading piece.First framework is used for clamping backlight module body, and first framework has supporting part and protuberance, and wherein supporting part is used to carry display panels, and protuberance is connected with the sidewall of supporting part, and is positioned at the display panels below.Shading piece is disposed on the protuberance of first framework, and protrudes from outside the protuberance.
According to the preferred embodiments of the present invention, described shading piece for example is an adhesive tape.
According to the preferred embodiments of the present invention, the material of described shading piece for example comprise polyethylene terephthalate (polyethylene terephthalate, PET).
According to the preferred embodiments of the present invention, the color of described shading piece for example is a black.
According to the preferred embodiments of the present invention, described backlight module body for example is side lamp tube type backlight module body or direct type backlight module body.
According to the preferred embodiments of the present invention, described backlight module for example also comprises second framework, and it is used to carry the backlight module body.
According to the preferred embodiments of the present invention, described LCD also comprises preceding frame, and it is connected with first framework, and is positioned at the display panels top.
Based on above-mentioned, the present invention adopts shading piece to be disposed on the protuberance of first framework, and protrudes from outside the protuberance, and it can absorb light and be radiated at the part that diffuser plate is positioned at non-display area to prevent it.Therefore, backlight module of the present invention can prevent that light from forming bright line at non-display area, and then promotes the display quality of LCD.
For allowing above and other objects of the present invention, feature and advantage become apparent, preferred embodiment cited below particularly, and cooperate appended diagram, be described in detail below.
Description of drawings
Fig. 1 is a kind of partial section of known LCD;
Fig. 2 is the structural section figure of LCD according to the preferred embodiment of the invention;
Fig. 3 is the partial enlarged drawing of label 10 among Fig. 2.
Embodiment
Fig. 2 illustrates the structural section figure of LCD according to a preferred embodiment of the invention, and Fig. 3 illustrates the partial enlarged drawing of label 10 among Fig. 2.Please refer to Fig. 2 and Fig. 3, the LCD 60 of present embodiment comprises display panels 400 and backlight module 500, wherein backlight module 500 for example is a side lamp tube type backlight module, and it is disposed at display panels 400 belows, to provide display panels 400 required light source.In addition, the backlight module of present embodiment also can be direct type backlight module.
Above-mentioned display panels 400 for example comprise thin-film transistor array base-plate 404, colored optical filtering substrates 408 and be disposed at thin-film transistor array base-plate 404 and colored optical filtering substrates 408 between liquid crystal layer 406.For example be pasted with down polaroid 402 on the thin-film transistor array base-plate 404, and for example be pasted with polaroid 410 on the colored optical filtering substrates 408.
In addition, backlight module 500 comprises that backlight module body 510 and first framework, 620, the first frameworks 620 are disposed on the backlight module body 510, and is used for clamping backlight module body 510.First framework 620 also can be in order to support display panels 400.In the present embodiment, backlight module 500 for example also comprises second framework 610 in order to carrying backlight module body 510, and backlight module body 510 for example comprises reflex housing 502, light guide plate 504, fluorescent tube 506 and optical diaphragm group 508.Light guide plate 504 is disposed on second framework 610, and in the fluorescent tube 506 configuration reflex housings 502, and be positioned at light guide plate 504 1 sides.Optical diaphragm group 508 is disposed on the light guide plate 504.This optical diaphragm group 508 for example comprises diffusion sheet 508a, brightness enhancement film 508b and upward diffusion sheet 508c down.Following diffusion sheet 508a is disposed on the light guide plate 504, and brightness enhancement film 508b is disposed between diffusion sheet 508c and the following diffusion sheet 508a.
Connect describedly, light guide plate 504 for example has a plurality of reflections site 504a, and these reflections site 504a is used to light scatter that fluorescent tube 506 is provided, so that light forms area sources by light guide plate 504 backs, with the display light source as display panels 400.In addition, optical diaphragm group 508 usefulness are so that the brightness of display light source is higher and more even.
In the present embodiment, first framework 620 has the supporting part 602 in order to carrying display panels 400, and the protuberance 604 that is connected with the sidewall 602a of supporting part 602, and protuberance 604 is positioned at display panels 400 belows.In addition, shading piece 606 is disposed at protuberance 604 tops of first framework 620, and protrudes from outside the protuberance 604.In addition, the LCD 60 of present embodiment for example also comprises preceding frame 700, and it is connected with first framework 620, and is positioned at display panels 400 tops.
Zone in Fig. 2 between X-X ' line and the Y-Y ' line is the viewing area of LCD, and X-X ' line left and Y-Y ' line are right-hand then to be non-display area.Generally speaking, the edge of thin-film transistor array base-plate 404 is provided with metallic circuit 412, and it for example is gate driving line or source drive line, and it is positioned at non-display area.In addition, have light shield layer 414 on the colored optical filtering substrates 408 usually, and this part light shield layer 414 is positioned at non-display area.
In the present embodiment, after part light (as light B3) the process light guide plate 504 that fluorescent tube 506 is sent, the metallic circuit 412 that can enter non-display area and be positioned at non-display area reflexes to the protuberance 604 tapered end I that can't form with injection molding method, but because the shading piece 606 of present embodiment is disposed on the protuberance 604, and protrude from outside the protuberance 604, so light B3 can be blocked by shading piece 606, and can't continue to march to optical diaphragm group 508.Thus, even the user during with angle stravismus LCD 60, can not see bright line or the bright rays that light B3 is caused yet on optical diaphragm group 508, therefore can improve the display quality of LCD 60.
Above-mentioned shading piece 606 for example is the paste of adhesive tape and so on, and available so simple bonding method is attached on the protuberance 604.The material of this shading piece 606 for example is to comprise polyethylene terephthalate (PET), but and color is good with the color of extinction, black for example.Certainly, the shading piece 606 of present embodiment is not limited only to adhesive tape, and other surface reflectivity is relatively poor or also can be used as shading piece through the metal material thin slice of special processing.
Utilize black belt to be as the benefit of shading piece 606, its material is cheap, and can cut according to required size, can not cause the waste of material, so can save material cost.In addition, when assembling operation, it is comparatively quick and convenient that the application of tape bonding method affixes to protuberance 604 with shading piece 606, can improve packaging efficiency, to reduce production costs.If when the position that shading piece 606 is pasted is inaccurate, also can tears easily and heavily paste, so not only can improve assembling output, also can save material cost.
In sum, Backlight module and liquid crystal display of the present invention has following advantage at least:
1, shading piece of the present invention can remedy the restriction of protuberance because of ejection formation, can't form tapered end and can not stop portions light reflex to the problem that diffuser plate forms bright line, therefore can effectively promote the display quality of LCD.
2, the material of shading piece is cheap and easy to assembly, not only can save material cost, also can enhance productivity.
When 3, the sticking position of shading piece is inaccurate, can tears easily and heavily paste, can improve assembling output like this, also can save material cost.
Though the present invention discloses as above with preferred embodiment; right its is not in order to qualification the present invention, any those skilled in the art, without departing from the spirit and scope of the present invention; when can doing a little modification and variation, so protection scope of the present invention is when looking being as the criterion that accompanying Claim defines.
Claims (17)
1. a backlight module is used to be configured in the display panels below, and so that its required light source to be provided, described backlight module comprises:
The backlight module body;
First framework, be disposed on the described backlight module body, and be used for the described backlight module body of clamping, described first framework has supporting part and protuberance, wherein said supporting part is used to carry described display panels, and described protuberance is connected with the sidewall of described supporting part, and is positioned at described display panels below; And
Shading piece is disposed on the described protuberance, and protrudes from outside the described protuberance.
2. backlight module as claimed in claim 1, wherein said shading piece comprises adhesive tape.
3. backlight module as claimed in claim 2, the material of wherein said shading piece comprises polyethylene terephthalate.
4. backlight module as claimed in claim 1, the color of wherein said shading piece are black.
5. backlight module as claimed in claim 1, the material of wherein said shading piece comprises metal.
6. backlight module as claimed in claim 1, wherein said backlight module body comprise side lamp tube type backlight module body.
7. backlight module as claimed in claim 1, wherein said backlight module body is the direct type backlight module body.
8. backlight module as claimed in claim 1 also comprises second framework, is used to carry described backlight module body.
9. LCD comprises:
Display panels; And
Backlight module is disposed at the below of described display panels, and described backlight module comprises:
The backlight module body;
First framework, be disposed on the described backlight module body, and be used for the described backlight module body of clamping, described first framework has supporting part and protuberance, wherein said supporting part is used to carry described display panels, and described protuberance is connected with the sidewall of described supporting part, and is positioned at described display panels below; And
Shading piece is disposed on the described protuberance, and protrudes from outside the described protuberance.
10. LCD as claimed in claim 9, wherein said shading piece comprises adhesive tape.
11. LCD as claimed in claim 10, the material of wherein said shading piece comprises polyethylene terephthalate.
12. LCD as claimed in claim 9, the color of wherein said shading piece are black.
13. LCD as claimed in claim 9, the material of wherein said shading piece comprises metal.
14. LCD as claimed in claim 9, wherein said backlight module body comprise side lamp tube type backlight module body.
15. LCD as claimed in claim 9, wherein said backlight module body is the direct type backlight module body.
16., LCD as claimed in claim 9, also comprise second framework, be used to carry described backlight module body.
17. LCD as claimed in claim 9 also comprises preceding frame, is connected with described first framework, and is positioned at described display panels top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101388880A CN101149517A (en) | 2006-09-21 | 2006-09-21 | Backlight module and liquid crystal display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101388880A CN101149517A (en) | 2006-09-21 | 2006-09-21 | Backlight module and liquid crystal display |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101149517A true CN101149517A (en) | 2008-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006101388880A Pending CN101149517A (en) | 2006-09-21 | 2006-09-21 | Backlight module and liquid crystal display |
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| CN (1) | CN101149517A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102402065A (en) * | 2011-10-04 | 2012-04-04 | 友达光电股份有限公司 | Display device |
| CN106896550A (en) * | 2012-07-10 | 2017-06-27 | 扬升照明股份有限公司 | Electronic device |
| WO2018223818A1 (en) * | 2017-06-08 | 2018-12-13 | 京东方科技集团股份有限公司 | Light guide panel, method of manufacturing light guide panel, backlight module, and display device |
| WO2019007076A1 (en) * | 2017-07-07 | 2019-01-10 | 京东方科技集团股份有限公司 | Array substrate and manufacturing method, liquid crystal display panel, and display apparatus |
| WO2022012331A1 (en) * | 2020-07-17 | 2022-01-20 | 海信视像科技股份有限公司 | Display device |
| CN114822256A (en) * | 2021-09-16 | 2022-07-29 | 友达光电股份有限公司 | Display device |
-
2006
- 2006-09-21 CN CNA2006101388880A patent/CN101149517A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102402065A (en) * | 2011-10-04 | 2012-04-04 | 友达光电股份有限公司 | Display device |
| CN106896550A (en) * | 2012-07-10 | 2017-06-27 | 扬升照明股份有限公司 | Electronic device |
| CN106896550B (en) * | 2012-07-10 | 2019-10-01 | 中强光电股份有限公司 | Electronic device |
| WO2018223818A1 (en) * | 2017-06-08 | 2018-12-13 | 京东方科技集团股份有限公司 | Light guide panel, method of manufacturing light guide panel, backlight module, and display device |
| WO2019007076A1 (en) * | 2017-07-07 | 2019-01-10 | 京东方科技集团股份有限公司 | Array substrate and manufacturing method, liquid crystal display panel, and display apparatus |
| US10816842B2 (en) * | 2017-07-07 | 2020-10-27 | Boe Technology Group Co., Ltd. | Array substrate and method for manufacturing the same, liquid crystal display panel, display device |
| WO2022012331A1 (en) * | 2020-07-17 | 2022-01-20 | 海信视像科技股份有限公司 | Display device |
| CN114822256A (en) * | 2021-09-16 | 2022-07-29 | 友达光电股份有限公司 | Display device |
| CN114822256B (en) * | 2021-09-16 | 2023-12-12 | 友达光电股份有限公司 | display device |
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Application publication date: 20080326 |