CN1710478A - Light guide plate with curved grooves - Google Patents
Light guide plate with curved grooves Download PDFInfo
- Publication number
- CN1710478A CN1710478A CN 200510082040 CN200510082040A CN1710478A CN 1710478 A CN1710478 A CN 1710478A CN 200510082040 CN200510082040 CN 200510082040 CN 200510082040 A CN200510082040 A CN 200510082040A CN 1710478 A CN1710478 A CN 1710478A
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- Prior art keywords
- guide plate
- light guide
- group
- curved bars
- substrate
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- 239000000758 substrate Substances 0.000 claims abstract description 44
- 238000009792 diffusion process Methods 0.000 claims abstract description 8
- 230000001351 cycling effect Effects 0.000 claims 2
- 230000000694 effects Effects 0.000 abstract description 8
- 238000005452 bending Methods 0.000 abstract 2
- 238000010586 diagram Methods 0.000 description 15
- 239000004973 liquid crystal related substance Substances 0.000 description 5
- 230000000737 periodic effect Effects 0.000 description 3
- 230000000007 visual effect Effects 0.000 description 3
- 230000002950 deficient Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005282 brightening Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
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Abstract
The invention discloses a light guide plate and a backlight module having the same. The light guide plate comprises a substrate and a group of bent grooves. The group of bending grooves is formed on the substrate and is provided with a plurality of lines horizontally bent on the substrate. The backlight module comprises a light source; a light guide plate, one end or one side of which is connected with the light source; a prism sheet located above the light guide plate; and the diffusion sheet is positioned above the prism sheet, wherein the light guide plate comprises a substrate and a group of bent grooves. The group of bending grooves is formed on the substrate and is provided with a plurality of lines horizontally bent on the substrate. By means of the curved grooves, the moire effect of the existing light guide plate can be eliminated, the brightness of emergent light can be improved, and the display effect of the display can be improved.
Description
Technical field
The present invention relates to a kind of light source module, relate in particular to a kind of light guide plate with horizontal curvature groove.
Background technology
Backlight module is one of critical component of display panels.Liquid crystal itself is not luminous, therefore needs to use backlight module that light source is provided, so that liquid crystal panel can show normal and even brightness image.Backlight module generally includes light source, light guide plate and a plurality of blooming piece, for example diffusion sheet and brightening piece.By means of blooming piece, can improve the directivity of backlight module emergent ray, make being more evenly distributed of emergent ray.
Fig. 1 is the synoptic diagram of existing light guide plate.Light guide plate 100 comprises substrate 102 and one group of groove 104 that is formed on the substrate 102, and this group groove 104 is made up of many V-type straight-line grooves 114.Yet because its periodic linear structure, existing V-type straight-line groove 114 liquid crystal pixels easy and LCD produce net pattern effect (Moire Effect), thereby cause visual defective.
Summary of the invention
In view of the above, the technical problem to be solved in the present invention provides a kind of light guide plate, and it has flatly crooked groove on substrate, eliminating net pattern effect, and the brightness that improves emergent ray, improves the display effect of display.
One preferred implementation according to the present invention, light guide plate comprise substrate and first group of bent groove.This first group of bent groove is formed on the substrate, and has many flatly crooked lines on substrate.
Moreover light guide plate also selectively comprises second group of bent groove.Second group of bent groove is formed at the another side that forms face on the substrate with respect to first group of bent groove, and has many flatly crooked grooves on substrate.
Another preferred implementation according to the present invention, backlight module comprises light source, light guide plate, prismatic lens and diffusion sheet.Light source is connected in an end or a side of light guide plate.Light guide plate comprises substrate and first group of bent groove.This first group of bent groove has many flatly crooked lines on substrate.Prismatic lens is positioned at the light guide plate top, and diffusion sheet then is positioned at the prismatic lens top.
Description of drawings
For making above-mentioned more clear understandable of the present invention, be elaborated below in conjunction with accompanying drawing with other purpose, feature, advantage.
Fig. 1 is the synoptic diagram of existing light guide plate;
Fig. 2 is the synoptic diagram of the present invention's one preferred implementation;
Fig. 3 A to Fig. 3 C is the synoptic diagram of a plurality of preferred implementations of light guide plate shown in Figure 2;
Fig. 4 A is the synoptic diagram of the curved bars of a preferred implementation;
Fig. 4 B is the synoptic diagram of the curved bars of another preferred implementation;
Fig. 5 is the synoptic diagram of the curved bars of another preferred implementation, so that difform array mode to be described;
Fig. 6 is again the synoptic diagram of the curved bars of a preferred implementation, so that different array modes of arranging phase place to be described;
Fig. 7 is the synoptic diagram of the curved bars of another preferred implementation, so that the array mode of two kinds in difformity and arrangement phase place to be described;
Fig. 8 A to Fig. 8 C is the side view of the bent groove of preferred implementation, to illustrate the dissimilar of bent groove.
Description of reference numerals
100 light guide plate, 102 substrates
104 1 groups of groove 114 V-type straight-line grooves
200 backlight modules, 202 light sources
204 light guide plate, 206 prismatic lenses
208 diffusion sheets
304a, 304b, 304c light guide plate
314a, 314b, 314c substrate
Second group of bent groove of first group of bent groove 324b of 324a
334a, 334b curved bars
434a, 434b curved bars
534a, 534b curved bars
634a, 634b curved bars
734a, 734b curved bars 824a V-groove
824b U type groove 824c undaform groove
Embodiment
Usage level bent groove of the present invention replaces the straight-line groove on the existing light guide plate, makes it avoid producing interference fringe with the liquid crystal molecule of vertical bar shape, and visual defective when causing the user to observe.
Fig. 2 is the synoptic diagram of the present invention's one preferred implementation.Backlight module 200 comprises light source 202, light guide plate 204, prismatic lens 206 and diffusion sheet 208.Light source 202 is connected in an end (a for example corner) or a side of light guide plate 204.Prismatic lens 206 is positioned at light guide plate 204 tops, and diffusion sheet 208 is positioned at prismatic lens 206 tops.Light guide plate 204 comprises substrate and at least one group of bent groove that is positioned on the substrate.This group bent groove has many flatly crooked lines on substrate.
Fig. 3 A to Fig. 3 C is the synoptic diagram of several preferred implementations of light guide plate 204 shown in Figure 2, in order to describe bent groove in detail and to be arranged in the different embodiments such as relative position of backlight module.These bent grooves can be positioned at light guide plate top, light guide plate below or be positioned at the above and below of light guide plate simultaneously.
As shown in Figure 3A, in this embodiment, light guide plate 304a comprises substrate 314a and first group of bent groove 324a.What first group of bent groove 324a was formed at substrate 314a is adjacent to prismatic lens 206 surface of (as shown in Figure 2), and has the curved bars 334a of many levels in substrate 314a.That is to say that different with existing V-type straight-line groove 114 shown in Figure 1, first group of bent groove 324a is flatly crooked on substrate 314a.
Or shown in Fig. 3 B, in this embodiment, what first group of bent groove 324a of light guide plate 304b was formed at substrate 314b is away from prismatic lens 206 surface of (as shown in Figure 2), and has the curved bars 334a of many levels in substrate 314b equally.Also can be shown in Fig. 3 C, except first group of bent groove 324a with curved bars 334a, the light guide plate 304c of this embodiment also can comprise second group of bent groove 324b on the relative another side of the formation face with first group of bent groove 324a that is formed at substrate 314c, wherein, second group of bent groove 324b has the curved bars 334b of many levels in substrate 314c.
The various different embodiments of the curved bars of these bent grooves below then are discussed, for example, the relative arrangement mode of distance, phase place or shape between the shape of described curved bars, crest and crest and type of bent groove etc.
Fig. 4 A is the synoptic diagram of the curved bars of a preferred implementation, and wherein, many curved bars 434a are the sinusoidal waveform lines.All equating between the crest of these curved bars 434a and crest apart from d, and have identical arrangement phase place.That is, the crest of adjacent sine-shaped curved bars 434a to trough, so makes to have identical arrangement phase place each other to crest, trough.Fig. 4 B then schematically shows the curved bars of another preferred implementation, and wherein, many curved bars 434b are " N " font lines.All equating between the crest of these curved bars 434b and crest apart from d, and have identical arrangement phase place.That is, the crest of the curved bars 434b of adjacent " N " font to trough, so makes to have identical arrangement phase place each other to crest, trough.
Moreover, according to the embodiment of the present invention, between crest and crest can be between 1 to 100 micron, preferably between 5 to 50 microns apart from d.Certainly, the present invention be not limited to curved bars on the same substrate must have between identical crest and crest apart from d.For the curved bars that is positioned at diverse location on the same substrate, those skilled in the art can according to required situation individually adjust between crest and crest apart from d, to obtain better optical effect.
Except above-mentioned embodiment, the relative arrangement mode of the phase place of these curved bars or shape can also have other modification, for example difform array mode, different arrange the array mode of phase places and has difformity simultaneously and arrange the array mode etc. of phase place.
Fig. 5 is the synoptic diagram of the curved bars of another preferred implementation, in order to difform array mode to be described.Wherein, many curved bars 534a are the sinusoidal waveform lines, and many curved bars 534b are " N " font lines.Curved bars 534a and 534b both by its shape periodic arrangement alternately in twos, and have roughly the same arrangement phase place.
Fig. 6 is the synoptic diagram of the curved bars of another preferred implementation, in order to different array modes of arranging phase place to be described.Many curved bars 634a and 634b are the sinusoidal waveform lines, and both arrangement phase places are just in time opposite and be staggered periodically.That is, adjacent curved bars 634a and 634b crest to each other are relative with trough, so make to have opposite arrangement phase place between the two.Certainly, in actual applications, the phase place of these curved bars needn't be just opposite, can be adjusted to its arrangement according to required situation and have suitable phase differential.
Fig. 7 is the synoptic diagram of the curved bars of another preferred implementation, in order to the array mode of explanation difformity and arrangement phase place.Many curved bars 734a are the sinusoidal waveform lines, and many curved bars 734b are " N " font lines.These curved bars 734a and 734b be according to its shape periodic arrangement alternately in twos, and both arrangement phase places are just in time opposite and be staggered periodically.That is, adjacent curved bars 734a and 734b crest to each other are relative with trough, so make to have opposite arrangement phase place between the two.Certainly, in actual applications, the phase place of these curved bars 734a and 734b needn't be just opposite, and visual required situation is adjusted to its arrangement and has suitable phase differential.
Moreover, all equating between curved bars 534a shown in Figure 5 and the crest of 534b and crest apart from d; All equating between curved bars 634a shown in Figure 6 and the crest of 634b and crest apart from d; All equating between curved bars 734a shown in Figure 7 and the crest of 734b and crest apart from d.Yet, be noted that, on the same substrate on difform curved bars (as shown in Figure 5), the same substrate on the curved bars (as shown in Figure 6) of out of phase, the same substrate curved bars (as shown in Figure 7) of difformity and out of phase in fact all can have between different separately crests and crest apart from d, have more than and be limited to above-mentioned preferred implementation.
Fig. 8 A to Fig. 8 C is the side view of the bent groove of preferred implementation, in order to illustrate the dissimilar of bent groove.First group of bent groove 324a shown in Fig. 3 C and second group of bent groove 324b can be V-groove 824a (shown in Fig. 8 A), U type groove 824b (shown in Fig. 8 B), undaform groove 824c (shown in Fig. 8 C) or other is applicable to the groove type of light guide plate.
By means of these horizontal curvature grooves, can avoid the horizontal curvature groove of light guide plate and the liquid crystal molecule of vertical bar shape to produce interference fringe, and the brightness that can improve display.With the preferred implementation shown in Fig. 4 A is example, when between its crest and crest be 5 microns apart from d the time, the existing light guide plate that its brightness (five degree angle) has the V-type straight-line groove improves about 5%.Therefore, the present invention can eliminate net pattern effect, and can improve the brightness of emergent ray, and then can improve the display effect of display.
Though the present invention discloses as above with preferred implementation; but they are not to be limitation of the invention; the any technician in this area is under the prerequisite that does not exceed design of the present invention and scope; can make various changes and retouching, so the protection domain that protection scope of the present invention should define with appended claim is as the criterion.
Claims (18)
1. light guide plate comprises:
Substrate; And
Be formed at first group of bent groove on the described substrate, wherein, this first group of bent groove has many flatly crooked lines on described substrate.
2. light guide plate as claimed in claim 1 wherein, also comprises second group of bent groove, and it is formed on the described substrate and forms the relative another side of face with described first group of bent groove; Described second group of bent groove has many flatly crooked lines on described substrate.
3. light guide plate as claimed in claim 1, wherein, described curved bars comprises the sinusoidal waveform lines.
4. light guide plate as claimed in claim 1, wherein, described curved bars comprises " N " font lines.
5. light guide plate as claimed in claim 1, wherein, the crest of described each curved bars and the distance of crest are between 1 to 100 micron.
6. light guide plate as claimed in claim 1, wherein, the crest of described each curved bars and the distance of crest are between 5 to 50 microns.
7. light guide plate as claimed in claim 1 wherein, is staggered the phase cycling of described curved bars.
8. light guide plate as claimed in claim 1, wherein, described curved bars is arranged periodically by its shape.
9. light guide plate as claimed in claim 1, wherein, described first group of bent groove comprises V-groove or U type groove or undaform groove.
10. backlight module comprises:
Light source;
Light guide plate, an end of this light guide plate or a side link to each other with described light source;
Prismatic lens, it is positioned at described light guide plate top;
Diffusion sheet, it is positioned at described prismatic lens top, and wherein, described light guide plate comprises substrate and the first group of bent groove that is formed on the described substrate, and described first group of bent groove has many flatly crooked lines on described substrate.
11. backlight module as claimed in claim 10, wherein, described light guide plate also comprises second group of bent groove, and this group channel shaped is formed on the described substrate and forms the relative another side of face with described first group of bent groove; Described second group of bent groove has many flatly crooked lines on described substrate.
12. backlight module as claimed in claim 10, wherein, described curved bars comprises the sinusoidal waveform lines.
13. backlight module as claimed in claim 10, wherein, described curved bars comprises " N " font lines.
14. backlight module as claimed in claim 10, wherein, the crest of described each curved bars and the distance of crest are between 1 to 100 micron.
15. backlight module as claimed in claim 10, wherein, the crest of described each curved bars and the distance of crest are between 5 to 50 microns.
16. backlight module as claimed in claim 10 wherein, is staggered the phase cycling of described curved bars.
17. backlight module as claimed in claim 10, wherein, described curved bars is arranged periodically according to its shape.
18. backlight module as claimed in claim 10, wherein, described first group of bent groove comprises V-groove or U type groove or undaform groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510082040 CN1710478A (en) | 2005-07-05 | 2005-07-05 | Light guide plate with curved grooves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510082040 CN1710478A (en) | 2005-07-05 | 2005-07-05 | Light guide plate with curved grooves |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1710478A true CN1710478A (en) | 2005-12-21 |
Family
ID=35706738
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510082040 Pending CN1710478A (en) | 2005-07-05 | 2005-07-05 | Light guide plate with curved grooves |
Country Status (1)
| Country | Link |
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| CN (1) | CN1710478A (en) |
Cited By (21)
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| CN100533187C (en) * | 2006-11-10 | 2009-08-26 | 嘉威光电股份有限公司 | Optical diaphragm and backlight module applying same |
| US7845810B2 (en) | 2007-08-07 | 2010-12-07 | Hon Hai Precision Industry Co., Ltd. | Prism sheet and liquid crystal display device using the same |
| CN101373229B (en) * | 2007-08-20 | 2011-02-09 | 鸿富锦精密工业（深圳）有限公司 | Liquid crystal display device and prism sheet thereof |
| US7967489B2 (en) | 2007-05-08 | 2011-06-28 | Samsung Electronics Co., Ltd. | Optical sheet, method of manufacturing the same and display apparatus having the same |
| CN102213780A (en) * | 2011-07-13 | 2011-10-12 | 北京康得新复合材料股份有限公司 | Bright enhancement film of prism structure |
| CN101535879B (en) * | 2006-11-15 | 2011-12-14 | 3M创新有限公司 | Back-lit displays with high illumination uniformity |
| CN101458347B (en) * | 2007-12-14 | 2011-12-21 | 鸿富锦精密工业（深圳）有限公司 | Prism lens, method for making same, and LCD device employing the prism lens |
| CN101221322B (en) * | 2006-08-31 | 2011-12-28 | 罗门哈斯丹麦金融有限公司 | Light redirecting film having varying optical elements |
| CN101922680B (en) * | 2009-03-02 | 2012-10-03 | 友达光电股份有限公司 | Light guide plate with V-shaped structure and backlight module including the light guide plate |
| CN101978311B (en) * | 2007-11-06 | 2012-11-21 | 株式会社Lms | Optical film and light emitting device comprising same |
| CN101620342B (en) * | 2008-06-30 | 2012-12-26 | 鸿富锦精密工业（深圳）有限公司 | Backlight module and optical plate thereof |
| CN103149626A (en) * | 2013-03-21 | 2013-06-12 | 京东方科技集团股份有限公司 | Light guide plate, back light module and liquid crystal display device |
| CN103399371A (en) * | 2013-08-07 | 2013-11-20 | 深圳市华星光电技术有限公司 | Light guide plate, backlight module and liquid crystal display device |
| CN103851540A (en) * | 2012-11-29 | 2014-06-11 | 南京高一智光学科技有限公司 | Light guide plate for backlight module |
| US9256020B2 (en) | 2013-08-07 | 2016-02-09 | Shenzhen China Star Optoelectronics Technology Co., Ltd. | Light-guiding plate comprising a plurality of trenches radiating from a first incident surface and a plurality of mesh dots, backlight module and liquid crystal display device |
| CN105700061A (en) * | 2014-12-15 | 2016-06-22 | 三星电子株式会社 | Backlight apparatus and display apparatus having the same |
| CN106016177A (en) * | 2016-05-20 | 2016-10-12 | 深圳磊明科技有限公司 | Corrugated plate lens and lighting device |
| CN107643630A (en) * | 2017-08-30 | 2018-01-30 | 广东深越光电技术有限公司 | A liquid crystal display module that realizes light and thin |
| CN107907933A (en) * | 2017-12-29 | 2018-04-13 | 深圳Tcl新技术有限公司 | light guide plate assembly |
| CN108303764A (en) * | 2017-01-13 | 2018-07-20 | 三星显示有限公司 | Display device |
| CN112946951A (en) * | 2019-12-11 | 2021-06-11 | 中强光电股份有限公司 | Backlight module and display device |
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2005
- 2005-07-05 CN CN 200510082040 patent/CN1710478A/en active Pending
Cited By (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101221322B (en) * | 2006-08-31 | 2011-12-28 | 罗门哈斯丹麦金融有限公司 | Light redirecting film having varying optical elements |
| CN100533187C (en) * | 2006-11-10 | 2009-08-26 | 嘉威光电股份有限公司 | Optical diaphragm and backlight module applying same |
| CN101535879B (en) * | 2006-11-15 | 2011-12-14 | 3M创新有限公司 | Back-lit displays with high illumination uniformity |
| US7967489B2 (en) | 2007-05-08 | 2011-06-28 | Samsung Electronics Co., Ltd. | Optical sheet, method of manufacturing the same and display apparatus having the same |
| CN101303429B (en) * | 2007-05-08 | 2014-12-31 | 三星显示有限公司 | Optical sheet, method of manufacturing the same and display apparatus having the same |
| US7845810B2 (en) | 2007-08-07 | 2010-12-07 | Hon Hai Precision Industry Co., Ltd. | Prism sheet and liquid crystal display device using the same |
| CN101373229B (en) * | 2007-08-20 | 2011-02-09 | 鸿富锦精密工业（深圳）有限公司 | Liquid crystal display device and prism sheet thereof |
| CN101978311B (en) * | 2007-11-06 | 2012-11-21 | 株式会社Lms | Optical film and light emitting device comprising same |
| CN101458347B (en) * | 2007-12-14 | 2011-12-21 | 鸿富锦精密工业（深圳）有限公司 | Prism lens, method for making same, and LCD device employing the prism lens |
| CN101620342B (en) * | 2008-06-30 | 2012-12-26 | 鸿富锦精密工业（深圳）有限公司 | Backlight module and optical plate thereof |
| CN101922680B (en) * | 2009-03-02 | 2012-10-03 | 友达光电股份有限公司 | Light guide plate with V-shaped structure and backlight module including the light guide plate |
| CN102213780A (en) * | 2011-07-13 | 2011-10-12 | 北京康得新复合材料股份有限公司 | Bright enhancement film of prism structure |
| CN103851540A (en) * | 2012-11-29 | 2014-06-11 | 南京高一智光学科技有限公司 | Light guide plate for backlight module |
| CN103149626B (en) * | 2013-03-21 | 2015-11-25 | 京东方科技集团股份有限公司 | Light guide plate, backlight module and liquid crystal indicator |
| CN103149626A (en) * | 2013-03-21 | 2013-06-12 | 京东方科技集团股份有限公司 | Light guide plate, back light module and liquid crystal display device |
| CN103399371A (en) * | 2013-08-07 | 2013-11-20 | 深圳市华星光电技术有限公司 | Light guide plate, backlight module and liquid crystal display device |
| US9256020B2 (en) | 2013-08-07 | 2016-02-09 | Shenzhen China Star Optoelectronics Technology Co., Ltd. | Light-guiding plate comprising a plurality of trenches radiating from a first incident surface and a plurality of mesh dots, backlight module and liquid crystal display device |
| CN103399371B (en) * | 2013-08-07 | 2016-04-27 | 深圳市华星光电技术有限公司 | Light guide plate, backlight module and liquid crystal indicator |
| CN105700061A (en) * | 2014-12-15 | 2016-06-22 | 三星电子株式会社 | Backlight apparatus and display apparatus having the same |
| CN106016177A (en) * | 2016-05-20 | 2016-10-12 | 深圳磊明科技有限公司 | Corrugated plate lens and lighting device |
| CN108303764A (en) * | 2017-01-13 | 2018-07-20 | 三星显示有限公司 | Display device |
| CN108303764B (en) * | 2017-01-13 | 2022-05-13 | 三星显示有限公司 | Display device |
| CN107643630A (en) * | 2017-08-30 | 2018-01-30 | 广东深越光电技术有限公司 | A liquid crystal display module that realizes light and thin |
| CN107907933A (en) * | 2017-12-29 | 2018-04-13 | 深圳Tcl新技术有限公司 | light guide plate assembly |
| CN112946951A (en) * | 2019-12-11 | 2021-06-11 | 中强光电股份有限公司 | Backlight module and display device |
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