CN1982984A - Negative-light mould set and its liquid-crystal display device - Google Patents
Negative-light mould set and its liquid-crystal display device Download PDFInfo
- Publication number
- CN1982984A CN1982984A CN 200510102367 CN200510102367A CN1982984A CN 1982984 A CN1982984 A CN 1982984A CN 200510102367 CN200510102367 CN 200510102367 CN 200510102367 A CN200510102367 A CN 200510102367A CN 1982984 A CN1982984 A CN 1982984A
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- light
- guide plate
- light guide
- projection
- module backlight
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Abstract
A back light module is prepared as forming light guide plate by multiple side surface with at least one side surface being set on with a lug, forming said lug by two light incoming surfaces connected with side surface, setting space of two light incoming surfaces to be gradually smaller in direction parallel to side surface direction and in following distance far from side surface, setting two light sources to be near to two light incoming surfaces of lug separately.
Description
[technical field]
The present invention relates to a kind of module backlight and liquid crystal indicator.
[background technology]
Because the liquid crystal itself in the panel of LCD is not had a characteristics of luminescence, therefore for reaching display effect, need to give the LCD panel to provide a planar light source device to realize Presentation Function, as module backlight, its function is to provide the area source that brightness is abundant and be evenly distributed to display panels.Common module backlight mainly comprises light source and light guide plate, light source is the incidence surface setting of relative light guide plate, the transmission direction that light-guide plate guides is sent light beam from light source, the Beam Transformation that line source or pointolite are sent becomes comparatively uniform in-plane light outgoing to illuminate the display panels in the LCD.
The pointolite that module backlight mainly uses is light emitting diode (Light-EmittingDiode, LED), light emitting diode is the high light source of a light intensity directive property, the light of its emission is concentrated and is pointed in the predetermined angle in its place ahead, be the angle of divergence of emergent ray, this angle of divergence is essentially 30 to 130 degree, the clear zone that the light of its concentrated angle overlaps, the light not zone of process then produces the optics dark space, causes the light guide plate bright dipping inhomogeneous.
A kind of module backlight 10 of prior art as shown in Figure 1.This module 10 backlight comprises a light guide plate 11 and a plurality of light emitting diode 13, this light guide plate 11 comprises an incidence surface 111, these a plurality of light emitting diode 13 contiguous these incidence surfaces 111 are provided with, light penetrates from a plurality of light emitting diodes 13 and enters light guide plate 11, the light that penetrates is concentrated and is pointed in the predetermined angle in its place ahead, be the angle of divergence of its emergent ray, this angle of divergence has a center line, and this center line is vertical with this incidence surface 111.
But, have certain angle of divergence owing to enter the incident beam of light guide plate 11, make the light inlet side of light guide plate 11 the optics dark space occur, this optics dark space mainly is distributed between the adjacent light emitting diode 13.
[summary of the invention]
For overcoming the shortcoming that occurs the optics dark space between the adjacent diode of prior art light guide plate exiting surface, be necessary to provide a kind of module backlight that can reduce light guide plate optics dark space.
For overcoming the shortcoming that occurs the optics dark space between the adjacent diode of prior art light guide plate exiting surface, be necessary to provide a kind of liquid crystal indicator that can reduce light guide plate optics dark space.
A kind of module backlight, it comprises a light guide plate and at least two light sources, this light guide plate comprises a plurality of sides, wherein have at least on the side in these a plurality of sides at least one projection is set, this projection comprises two incidence surfaces that link to each other with the side, with reducing away from the side, this light source is respectively adjacent to two incidence surface settings of this projection to these two incidence surfaces in the spacing that is parallel to side surface direction.
A kind of liquid crystal indicator, it comprises a module backlight, this module backlight comprises a light guide plate and at least two light sources.This light guide plate comprises a plurality of sides, wherein have at least on the side in these a plurality of sides at least one projection is set, this projection comprises two incidence surfaces that link to each other with the side, with reducing away from the side, this light source is respectively adjacent to two incidence surface settings of this projection to these two incidence surfaces in the spacing that is parallel to side surface direction.
Compared with prior art, two incidence surfaces of the projection of the light guide plate in above-mentioned module backlight and the liquid crystal indicator in the spacing that is parallel to side surface direction with reducing away from the side, when two incidence surfaces that are respectively adjacent to this projection when this light source are provided with, when light enters this light guide plate from this light source, can make the zone that easily produces the optics dark space in the prior art between the adjacent light emitting diode of light guide plate light inlet side have light to inject, the incident beam distribution range that enters this light guide plate enlarges, thereby can reduce the generation of the optics dark space of light guide plate.
[description of drawings]
Fig. 1 is a kind of prior art module synoptic diagram backlight.
Fig. 2 is the present invention's module first embodiment synoptic diagram backlight.
Fig. 3 is the present invention's module second embodiment synoptic diagram backlight.
Fig. 4 is the present invention's module the 3rd embodiment synoptic diagram backlight.
Fig. 5 is the present invention's module the 4th embodiment synoptic diagram backlight.
Fig. 6 is the present invention's module the 5th embodiment synoptic diagram backlight.
Fig. 7 is the present invention's module the 6th embodiment synoptic diagram backlight.
Fig. 8 is the present invention's module the 7th embodiment synoptic diagram backlight.
Fig. 9 is a liquid crystal indicator synoptic diagram of the present invention.
[embodiment]
With reference to Fig. 2, it is the present invention's module first embodiment synoptic diagram backlight, this module 20 backlight comprises a light guide plate 21 and at least two light sources 23, this light guide plate 21 comprises a plurality of sides 213, one side 213 is provided with at least one projection 212, this projection 212 comprises two incidence surfaces 211 that link to each other with side 213, these two incidence surfaces 211 in the spacing that is parallel to side 213 directions with reducing away from side 213, and these two incidence surfaces 211 intersect, at angle, two incidence surfaces 211 that this light source 23 is respectively adjacent to this projection 212 are provided with, this light source 23 is a light emitting diode, light autoluminescence diode 23 penetrates and enters two incidence surfaces 211, the light that light emitting diode 23 penetrates is concentrated and is pointed in the predetermined angle in its place ahead, it is the angle of divergence of emergent ray, and this angle of divergence has a center line, the normal parallel of the incidence surface 211 of this center line and this projection 212.Light A, the B, C, the D that are sent by light emitting diode 23 enter light guide plate 21 through incidence surface 211, and this light is through 23 zones that easily produce the optics dark space of the adjacent light emitting diode of light guide plate 21 light inlet sides.
Above-mentioned module backlight 20, because the existence of angle between two incidence surfaces 211 of this projection 212, make 23 zones that easily produce the optics dark space of the adjacent light emitting diode of light guide plate 21 light inlet sides have light to inject, the incident beam distribution range that enters this light guide plate 21 that penetrates from this light emitting diode 23 enlarges, thereby reduced the generation of the optics dark space of light guide plate 21, this angle can be as required, is designed to optimum value according to the angle of divergence of the emergent ray of light emitting diode 23.
With reference to Fig. 3, be the present invention's module second embodiment synoptic diagram backlight.Itself and the first embodiment difference are that the projection 312 of the light guide plate 31 of this module backlight further comprises a plane 314, this plane 314 links to each other with these two incidence surfaces 311 respectively, to draw back two distances between the light source, this 314 arranged outside, one reflection horizon, plane (figure do not show) prevents that light from penetrating lost by these plane 314 ease.
With reference to Fig. 4, be the present invention's module the 3rd embodiment synoptic diagram backlight.Itself and the second embodiment difference are that the projection 412 of the light guide plate 41 of this module backlight comprises a cambered surface 414, and this cambered surface 414 links to each other with these two incidence surfaces 411 respectively, and this cambered surface 412 is outwards outstanding.
With reference to Fig. 5, be the present invention's module the 4th embodiment synoptic diagram backlight.Itself and the second embodiment difference are that the projection 512 of the light guide plate 51 of this module backlight comprises a cambered surface 514, and this cambered surface 514 links to each other with these two incidence surfaces 511 respectively, and this cambered surface 512 is what inwardly concave.
With reference to Fig. 6, be the present invention's module the 5th embodiment synoptic diagram backlight.It is that with the first embodiment difference light source 63 placement locations of this module backlight are different, the center line of the angle of divergence of these light source 63 emergent raies, with the normal of the incidence surface 611 of this projection 612 E that has angle, can adjust the incident angle of light of this light source 63 by the size of adjusting this angle E.
With reference to Fig. 7, it is the present invention's module the 6th embodiment synoptic diagram backlight, itself and the first embodiment difference are that the light guide plate 71 of this module backlight comprises a blind hole 715, the projection setting of these blind hole 715 contiguous these light guide plate 71, can fill material in this blind hole 715 with this light guide plate unlike material, route when in light guide plate 71, advancing to change light, thus light fully reflection, refraction in light guide plate 71 made, obtain more uniform in-plane light at exiting surface.
With reference to Fig. 8, it is the present invention's module the 7th embodiment synoptic diagram backlight, itself and the first embodiment difference are that the incidence surface 811 of projection 812 of the light guide plate 81 of this module backlight is provided with vee-cut, the light that light emitting diode is sent spreads, enlarge the lumination of light emitting diode angle, and then improve light guide plate 81 brightness distribution uniformity.
With reference to Fig. 9, be liquid crystal indicator synoptic diagram of the present invention, this liquid crystal indicator 200 comprises the liquid crystal panel 29 that relative this module 20 backlight with of an above-mentioned module 20 backlight is provided with.
Yet, it is described that the light guide plate of this module backlight is not limited to above-mentioned embodiment, for example, the projection of this light guide plate can adopt with this light guide plate be material of the same race, the projection of this light guide plate also can adopt with this light guide plate be that unlike material is made, thereby the route when changing light and advancing, the light diffusion that light emitting diode is sent, enlarge the lumination of light emitting diode angle, and then improve the light guide plate brightness distribution uniformity; Can fill the material of identical material different densities in the blind hole of this light guide plate with this light guide plate, also can fill material with this light guide plate unlike material, route when in light guide plate, advancing to change light, thereby make light in light guide plate, fully reflect, reflect, obtain more uniform in-plane light at exiting surface; The projection of this light guide plate can be an one with this light guide plate, also can be as Fig. 2 to shown in Figure 8 non-one-body molded along dotted line and side, and this projection is arranged at least one side.
Claims (9)
1. module backlight, it comprises a light guide plate and at least two light sources, this light guide plate comprises a plurality of sides, it is characterized in that: have at least on the side in these a plurality of sides at least one projection is set, this projection comprises two incidence surfaces that link to each other with the side, with reducing away from the side, this light source is respectively adjacent to two incidence surface settings of this projection to these two incidence surfaces in the spacing that is parallel to side surface direction.
2. module backlight as claimed in claim 1 is characterized in that: these two incidence surfaces in the spacing that is parallel to side surface direction with reducing gradually away from the side.
3. module backlight as claimed in claim 1 is characterized in that: two incidence surfaces of this projection are provided with groove structure.
4. module backlight as claimed in claim 1 is characterized in that: the projection of this light guide plate also comprises a plane, and this plane links to each other with two incidence surfaces of this projection respectively.
5. module backlight as claimed in claim 1 is characterized in that: the projection of this light guide plate also comprises a cambered surface, and this cambered surface links to each other with two incidence surfaces of this projection respectively.
6. module backlight as claimed in claim 5 is characterized in that: this cambered surface is outwards outstanding.
7. module backlight as claimed in claim 5 is characterized in that: this cambered surface inwardly concaves.
8. module backlight as claimed in claim 1 is characterized in that: this light guide plate comprises a blind hole, and contiguous this projection is provided with.
9. liquid crystal indicator, it comprises a module backlight, this module backlight is the described module backlight of each claim in the claim 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101023675A CN100498463C (en) | 2005-12-13 | 2005-12-13 | Back light module group and its liquid-crystal display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101023675A CN100498463C (en) | 2005-12-13 | 2005-12-13 | Back light module group and its liquid-crystal display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1982984A true CN1982984A (en) | 2007-06-20 |
| CN100498463C CN100498463C (en) | 2009-06-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005101023675A Expired - Fee Related CN100498463C (en) | 2005-12-13 | 2005-12-13 | Back light module group and its liquid-crystal display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100498463C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102854561A (en) * | 2012-09-14 | 2013-01-02 | 京东方科技集团股份有限公司 | Light guide plate and preparation and application thereof |
| CN108896222A (en) * | 2018-07-27 | 2018-11-27 | 京东方科技集团股份有限公司 | A kind of pressure sensor and its method for detecting pressure |
-
2005
- 2005-12-13 CN CNB2005101023675A patent/CN100498463C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102854561A (en) * | 2012-09-14 | 2013-01-02 | 京东方科技集团股份有限公司 | Light guide plate and preparation and application thereof |
| CN102854561B (en) * | 2012-09-14 | 2015-02-11 | 京东方科技集团股份有限公司 | Light guide plate and preparation and application thereof |
| US9958587B2 (en) | 2012-09-14 | 2018-05-01 | Boe Technology Group Co., Ltd. | Light guide plate, method for fabricating the same and backlight unit |
| CN108896222A (en) * | 2018-07-27 | 2018-11-27 | 京东方科技集团股份有限公司 | A kind of pressure sensor and its method for detecting pressure |
| CN108896222B (en) * | 2018-07-27 | 2020-06-23 | 京东方科技集团股份有限公司 | Pressure sensor and method for detecting pressure by using same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100498463C (en) | 2009-06-10 |
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| C14 | Grant of patent or utility model | ||
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Granted publication date: 20090610 Termination date: 20191213 |