CN2938145Y - Improved structure of light plate and liquid crystal display device with the plate - Google Patents
Improved structure of light plate and liquid crystal display device with the plate Download PDFInfo
- Publication number
- CN2938145Y CN2938145Y CN 200620120143 CN200620120143U CN2938145Y CN 2938145 Y CN2938145 Y CN 2938145Y CN 200620120143 CN200620120143 CN 200620120143 CN 200620120143 U CN200620120143 U CN 200620120143U CN 2938145 Y CN2938145 Y CN 2938145Y
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- China
- Prior art keywords
- grooving
- light
- guide plate
- light guide
- group
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Abstract
The utility model discloses a light guide plate, which at least comprises a light entrance surface, a bottom surface intersected with the light entrance surface, and a light exit surface arranged oppositely to the bottom surface. The light source is arranged on one side that faces the light entrance surface; the light exit surface and the bottom surface are respectively provided with a first group of cutting grooves and a second group of cutting grooves, wherein, the section of each cutting groove of the two groups has a vertex angle, a first oblique angle and a second oblique angle; the value of the vertex angle of each cutting groove of the first group ranges from 75 degree to 120 degree, while the value of the first oblique angle of each cutting groove of the second group ranges from 35 degree to 55 degree. Therefore, the light which passes through the light entrance surface can be radiated by total reflection in a certain light exit angle, thus avoiding wide-angle optical loss, increasing the light utilization rate and achieving a thin-type design by dispensing with the arrangement of prism lenses and diffusion lenses.
Description
Technical field
The utility model relates to a kind of light conducting plate structure improvement, aims to provide a kind of loss of avoiding wide-angle light, improves light utilization efficiency, and the setting that can save prismatic lens and diffusion sheet, to reach the light conducting plate structure improvement of slimming design.
Background technology
General liquid crystal indicator (Liquid Crystal Display, LCD) backlight module (Back Light Unit, BLU) basic structure is formed as shown in Figure 1, by light guide plate (LGP) 11, be located at light guide plate 11 plate edge positions light source 12, be located at the reflection diaphragm 13 of light guide plate 11 belows, and the assemblies of being located between light guide plate 11 and the liquid crystal panel 17 such as blooming piece constitute.
Wherein, the major function of light guide plate 11 is to convert the directional light of light source 12 incidents to the plane vertical light by light principle at random, but in order to reach all effects of light of scattering, usually set blooming piece between light guide plate 11 and liquid crystal panel 17, it is mainly in regular turn by down diffusion sheet 14, two prismatic lenses 15 and go up diffusion sheet 16 and formed, with the equal effect of light of scattering; Each prismatic lens 15 upper face is provided with prism structure 151 (prism structure is continuous sawtooth channel form), it receives by light guide plate 11 and reaches the light of diffusion sheet 14 down, and after prism structure 151 refractions via each prismatic lens, it is big that the lighting angle of its light becomes, and then make the visual angle change make brightness reduce greatly.
So liquid crystal indicator structure is as shown in Figure 2 also arranged, its by light guide plate (LGP) 11, be located at light guide plate 11 plate edge positions light source 12, be located at the reflection diaphragm 13 of light guide plate 11 belows, and the assemblies of being located between light guide plate 11 and the liquid crystal panel 17 such as blooming piece constitute; Wherein, this blooming piece mainly is made up of an inverse edge eyeglass 15 ' and last diffusion sheet 16 in regular turn, the bottom surface of its inverse edge eyeglass 15 ' also is provided with plural prism structure 151 ', when light is penetrated by light guide plate 11 and when entering inverse edge eyeglass 15 ', can dwindle the rising angle of light, and then dwindle the visual angle and make brightness improve.
Yet above-mentioned two kinds of liquid crystal indicator structures are all utilized the use that increases the number blooming piece, have not only increased cost, and the assembling of its each blooming piece, also can increase the thickness of this liquid crystal indicator, have run counter to light, thin, short, little demand.
The utility model content
In view of this, the utility model is to provide a kind of loss of avoiding wide-angle light, improves light utilization efficiency, and the setting that can save prismatic lens and diffusion sheet, improve with the light conducting plate structure that reaches the slimming design, and a kind of liquid crystal indicator that utilizes this light conducting plate structure improvement.
The structure improved solution of the utility model light guide plate is that this light guide plate includes an incidence surface, one and this incidence surface bottom surface of intersecting at least, and an exiting surface relative with this bottom surface, and light source then is arranged at a side that should incidence surface; Wherein, this exiting surface and bottom surface are respectively equipped with first and second group grooving, the cross section of its first and second group grooving each grooving has a drift angle, one first oblique angle and second oblique angle, the span of drift angle is 75 °～120 ° in this first group of each grooving of grooving, the span at first oblique angle is 35 °～55 ° in this second group of each grooving of grooving, so that the light that passes through is penetrated with certain rising angle by the total reflection mode.
And a kind of liquid crystal indicator, it includes at least:
One light guide plate, this light guide plate include an incidence surface, one and this incidence surface bottom surface of intersecting at least, and an exiting surface relative with this bottom surface;
One light source is arranged at a side of light guide plate incidence surface;
One reflector plate is arranged at the light guide plate below;
One diffusion sheet is arranged at the light guide plate top;
One liquid crystal panel is arranged at the diffusion sheet top;
This exiting surface and bottom surface are respectively equipped with first and second group grooving, the cross section of its first and second group grooving each grooving has a drift angle, one first oblique angle and second oblique angle, the span of drift angle is 75 °～120 ° in this first group of each grooving of grooving, the span at first oblique angle is 35 °～55 ° in this second group of each grooving of grooving, so that the light that passes through is penetrated with certain rising angle by the total reflection mode.
The utility model adopts the beneficial effect that said structure reached to be: can obtain a kind of loss of avoiding wide-angle light, improve light utilization efficiency, and the setting that can save prismatic lens and diffusion sheet, improve with the light conducting plate structure that reaches the slimming design, and a kind of liquid crystal indicator that utilizes this light conducting plate structure improvement.
Description of drawings
Fig. 1 is first kind of structural representation of commonly using backlight module;
Fig. 2 is second kind of structural representation of commonly using backlight module;
Fig. 3 is the structural perspective of light guide plate first embodiment in the utility model;
Fig. 4 is the structural representation that the light guide plate drift angle amplifies in the utility model;
Fig. 5 is the structural representation of light guide plate second embodiment in the utility model;
Fig. 6 is the structural perspective of light guide plate the 3rd embodiment in the utility model.
[figure number explanation]
12 light sources, 13 reflection diaphragms
14 times diffusion sheet 15 prismatic lenses
151 prism structures, 15 ' inverse edge eyeglass
Diffusion sheet on the 151 ' prism structure 16
17 liquid crystal panels, 20 light guide plate
21 incidence surfaces, 22 exiting surfaces
23 bottom surfaces, 30 light sources
24 first grooving groups, 25 second grooving groups
Embodiment
For the clear structure of the present utility model of your auditor is formed, and the overall operation mode, cooperate graphic being described as follows now:
The structural improvement of the utility model light guide plate, be primarily aimed at that light guide plate is improved in the side light type back light module framework, as shown in Figure 3, its light guide plate 20 plate ends are divided into incidence surface 21, its front portion is an exiting surface 22, and with respect to exiting surface 22 and the bottom surface 23 that has incidence surface 21 to intersect, and light source 30 is arranged at a side that should incidence surface 21, its light source 30 can be pointolite (as light emitting diode), make light be able to inject from this incidence surface 21, exiting surface 22 by light guide plate 20 fronts penetrates again, to reach the effect that light source shows.
Focusing on of this case: this exiting surface 22 and bottom surface 23 are provided with first and second group grooving 24,25, embodiment as shown in the figure, this first and second group grooving 24,25 is the structure of V-groove, its cross section has a drift angle Y, one first oblique angle β and the second oblique angle α, as shown in Figure 4, the span of drift angle Y is 75 °～120 ° in these first group of grooving, 24 each groovings, 35 °～55 ° of the spans of the first oblique angle β in these second group of grooving, 25 each groovings, so that the light that passes through is penetrated with certain rising angle by the total reflection mode, can avoid the loss of wide-angle light.
In addition, this first and second group grooving 24,25 mode of arranging that can continue is arranged on the exiting surface 22 and bottom surface 23 of light guide plate 20, as shown in Figure 4; Also can be as shown in Figure 5, have spacing between each grooving, and the formula variation in gradient of this spacing, and light source 30 can be right against the grooving setting with spacing maximum.
During concrete enforcement, the backlight modular structure of this liquid crystal indicator as shown in Figure 6, by light guide plate 20, be located at the light source 30 of light guide plate 20 plate edge positions, be located at the reflection diaphragm 13 of light guide plate 20 belows, and the last diffusion sheet of being located between light guide plate 20 and the liquid crystal panel 17 16 constitutes, the light of its light source 30 enters light guide plate 20 by light guide plate 20 incidence surfaces 21, part light is evenly penetrated to exiting surface 22 by second group of grooving 25 of bottom surface 23, part light is then penetrated by first group of grooving 24 of exiting surface 22, and by the angular dimension at the drift angle or first oblique angle, the light that passes through is penetrated with certain rising angle by the total reflection mode, can avoid the loss of wide-angle light, and special angle design via the drift angle or first oblique angle, can improve light utilization efficiency, and can save prismatic lens and the setting of diffusion sheet down, to reach the design of slimming.
As mentioned above, the utility model provides the side light type back light module frame another preferable feasible light conducting plate structure, so offer the application of novel patent in accordance with the law; Yet, above implementation and graphic shown in, be the utility model preferred embodiment, be not to limit to the utility model with this, be with, approximate with structure of the present utility model, device, feature etc., identical such as, all should belong to of the present utility model founding within purpose and the claim.
Claims (12)
1, a kind of structural improvement of light guide plate, its light guide plate include an incidence surface, one and this incidence surface bottom surface of intersecting at least, and an exiting surface relative with this bottom surface, and light source is arranged at a side that should incidence surface; It is characterized in that:
This exiting surface and bottom surface are respectively equipped with first and second group grooving, the cross section of its first and second group grooving each grooving has a drift angle, one first oblique angle and second oblique angle, the span of drift angle is 75 °～120 ° in this first group of each grooving of grooving, and the span at first oblique angle is 35 °～55 ° in this second group of each grooving of grooving.
2, the structural improvement of light guide plate according to claim 1 is characterized in that this grooving is the structure of V-groove.
3, the structural improvement of light guide plate according to claim 1 is characterized in that, each grooving is provided with in the mode of arranging that continues.
4, the structural improvement of light guide plate according to claim 1 is characterized in that having spacing between each grooving.
As the structural improvement of light guide plate as described in the claim 4, it is characterized in that 5, the spacing of each grooving formula in gradient changes, and light source is right against the grooving setting with spacing maximum.
6, the structural improvement of light guide plate according to claim 1 is characterized in that this light source is a pointolite.
7, a kind of liquid crystal indicator is characterized in that, it includes at least:
One light guide plate, this light guide plate include an incidence surface, one and this incidence surface bottom surface of intersecting at least, and an exiting surface relative with this bottom surface;
One light source is arranged at a side of light guide plate incidence surface;
One reflector plate is arranged at the light guide plate below;
One diffusion sheet is arranged at the light guide plate top;
One liquid crystal panel is arranged at the diffusion sheet top;
This exiting surface and bottom surface are respectively equipped with first and second group grooving, the cross section of its first and second group grooving each grooving has a drift angle, one first oblique angle and second oblique angle, the span of drift angle is 75 °～120 ° in this first group of each grooving of grooving, and the span at first oblique angle is 35 °～55 ° in this second group of each grooving of grooving.
8, as liquid crystal indicator as described in the claim 7, it is characterized in that this grooving is the structure of V-groove.
As liquid crystal indicator as described in the claim 7, it is characterized in that 9, each grooving is provided with in the mode of arranging that continues.
10, as liquid crystal indicator as described in the claim 7, it is characterized in that having spacing between each grooving.
As liquid crystal indicator as described in the claim 10, it is characterized in that 11, the spacing of each grooving formula in gradient changes, and light source is right against the grooving setting with spacing maximum.
12, as liquid crystal indicator as described in the claim 7, it is characterized in that this light source is a pointolite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620120143 CN2938145Y (en) | 2006-06-20 | 2006-06-20 | Improved structure of light plate and liquid crystal display device with the plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620120143 CN2938145Y (en) | 2006-06-20 | 2006-06-20 | Improved structure of light plate and liquid crystal display device with the plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2938145Y true CN2938145Y (en) | 2007-08-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620120143 Expired - Fee Related CN2938145Y (en) | 2006-06-20 | 2006-06-20 | Improved structure of light plate and liquid crystal display device with the plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2938145Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101776246B (en) * | 2010-01-28 | 2011-11-23 | 苏州奥浦迪克光电技术有限公司 | Light guide plate and illuminator and back light module comprising same |
| WO2012006952A1 (en) * | 2010-07-14 | 2012-01-19 | Tan Shunyi | Optical system |
| CN102425745A (en) * | 2011-11-25 | 2012-04-25 | 上海向隆电子科技有限公司 | Luminescence module |
| CN110953547A (en) * | 2019-12-10 | 2020-04-03 | 东风汽车有限公司 | Thick-wall part for vehicle lamp and vehicle lamp |
-
2006
- 2006-06-20 CN CN 200620120143 patent/CN2938145Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101776246B (en) * | 2010-01-28 | 2011-11-23 | 苏州奥浦迪克光电技术有限公司 | Light guide plate and illuminator and back light module comprising same |
| WO2012006952A1 (en) * | 2010-07-14 | 2012-01-19 | Tan Shunyi | Optical system |
| CN102330950A (en) * | 2010-07-14 | 2012-01-25 | 江苏慧光电子科技有限公司 | Optical system |
| CN102425745A (en) * | 2011-11-25 | 2012-04-25 | 上海向隆电子科技有限公司 | Luminescence module |
| CN110953547A (en) * | 2019-12-10 | 2020-04-03 | 东风汽车有限公司 | Thick-wall part for vehicle lamp and vehicle lamp |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070822 |