CN102518998A - Backlight module - Google Patents
Backlight module Download PDFInfo
- Publication number
- CN102518998A CN102518998A CN2012100083382A CN201210008338A CN102518998A CN 102518998 A CN102518998 A CN 102518998A CN 2012100083382 A CN2012100083382 A CN 2012100083382A CN 201210008338 A CN201210008338 A CN 201210008338A CN 102518998 A CN102518998 A CN 102518998A
- Authority
- CN
- China
- Prior art keywords
- light
- light source
- module backlight
- face
- sunk structure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Abstract
The invention provides a backlight module, which comprises a light guide plate and a light source. The light guide plate comprises a light inlet face, a light outlet face and a bottom face. The light inlet face is provided with at least one seal type concave structure which is tapered inwards from the light inlet face; a side wall of the concave structure is provided with a concentric concave-convex structure; and a ridge line and a valley line of the concave-convex structure are parallel to the light inlet face. The light inlet face and the light outlet face are vertically connected. The bottom face is opposite to the light outlet face. The light source is adjacent to one side of the light inlet face, which is arranged on the light guide plate and corresponds to the concave structure. Due to the adoption of the backlight module, the phenomenon of optical dark space caused by insufficiency of the diverging angle of the light source can be increased, so that light can be ensured to be evenly and deeply conducted in the light guide plate.
Description
Technical field
The present invention relates to a kind of module backlight, relate in particular to a kind of module backlight that can promote brightness uniformity.
Background technology
Module backlight (Back Light Unit; Be abbreviated as BLU) be LCD (Liquid Crystal Display; One of be abbreviated as LCD) important device of product; Be widely used at present on the Related products such as digital camera, mobile phone, personal digital assistant (Personal Digital Assistant is abbreviated as PDA), computer monitor and flat-surface television.Generally speaking, module backlight (BLU) is arranged at the back side of display panels mostly, includes light source, LGP, reflector plate, diffuser plate and several blooming pieces or prismatic lens.
The effect of LGP is to guide the scattering direction of the light that light source produces, and is used for improving the briliancy of panel, and guarantees the uniformity of panel luminance, so that spot light in the module backlight (BLU) or line source are converted to area source and offer display panels.Because the rising angle of light emitting diode (LED) limited (about 120 degree); Therefore the angle of light entering LGP is also limited; Cause in the rising angle scope of light emitting diode (LED) brightness higher; The outer brightness of rising angle scope is dark partially, i.e. hot spot (Hot Spot) phenomenon (no matter being that incident side has or not little cutting process all to have hot spot (Hot Spot) existence).
In view of this; How to design a kind of module backlight (BLU), it is bigger to make light emitting diode (LED) emergent light be incident to the angle of LGP, to alleviate hot spot (Hot Spot) phenomenon; Making the brightness of panel more even, is the problem that the professional and technical personnel need address.
Summary of the invention
Rising angle to light emitting diode in the prior art (LED) limited (about 120 degree); Cause the angle of light entering LGP also limited; And then cause in the rising angle scope of light emitting diode (LED) brightness higher; Dark partially this defective of the outer brightness of rising angle scope the invention provides a kind of module backlight.
According to the invention provides a kind of module backlight, wherein, comprising:
LGP comprises:
One incidence surface has at least one closed sunk structure from the inside convergent of said incidence surface, and said sunk structure sidewall has concentric concaveconvex structure, and the crest line of said concaveconvex structure is parallel with said incidence surface with valley line;
Exiting surface links to each other with said incidence surface is vertical; And
The bottom surface, relative with said exiting surface; And
Light source, contiguous said incidence surface is positioned at a side of said LGP, the corresponding said sunk structure of said light source.
Preferably, said sunk structure is the taper groove.
Preferably, said sunk structure is coniform groove.
Preferably, said sunk structure has a flat bottom surface.
Preferably, said light source is a spot light.
Preferably, said light source is a light emitting diode.
Preferably, said light source is a laser diode.
Adopt advantage of the present invention to have: through sunk structure is set on LGP, increases light source and shine the angle on the LGP,, further promote the uniformity of the brightness of panel to eliminate the hot spot phenomenon.
Description of drawings
The reader with reference to advantages after the specific embodiment of the present invention, will become apparent various aspects of the present invention.Wherein,
Fig. 1 illustrates the structural representation according to the present invention's module backlight.
Fig. 2 is the sketch map of sunk structure on the LGP among Fig. 1.
The specific embodiment
For technology contents that the application is disclosed is more detailed and complete, can be with reference to accompanying drawing and following various specific embodiments of the present invention, identical mark is represented same or analogous assembly in the accompanying drawing.Yet the embodiment that those of ordinary skill in the art should be appreciated that hereinafter to be provided is used for limiting the scope that the present invention is contained.In addition, accompanying drawing only is used for schematically explaining, does not draw according to its life size.
With reference to the accompanying drawings, the specific embodiment of various aspects of the present invention is done further to describe in detail.
As previously mentioned; In the module backlight of prior art; The rising angle of light emitting diode (LED) limited (about 120 degree); It is also limited that light gets into the angle of LGP thus, thereby cause the rising angle scope of light emitting diode (LED) in brightness higher, the phenomenon (regardless of being that incident side has or not little cutting process all to have hot spot (Hot Spot) existence) that the outer brightness of rising angle scope is dark partially.
In order to solve this puzzlement of the prior art, Fig. 1 illustrates the structural representation according to the present invention's module backlight.With reference to Fig. 1, module 1 backlight comprises: LGP 10 and light source 11.Wherein, LGP 10 has an incidence surface 101, exiting surface 102 and bottom surface 103.Incidence surface 101 has at least one closed sunk structure 104 from incidence surface 101 inside convergents.Exiting surface 102 is vertical each other with incidence surface 101, and connection and incidence surface 101.Bottom surface 103 is relative with exiting surface 102.The contiguous incidence surfaces 101 of light source 11 are positioned at a side of LGP 10, and corresponding one by one with sunk structure 104 on the LGP 10.In the present embodiment, light source 11 is a spot light, is light emitting diode more specifically.In a further embodiment, light source 11 can also be laser diode.
Fig. 2 is the sketch map of sunk structure on the LGP among Fig. 1.With reference to Fig. 2, sunk structure 104 sidewalls have concentric concaveconvex structure 1041.The crest line 1042 of concaveconvex structure 1041 is parallel with incidence surface 101 with valley line 1043.In the present embodiment, sunk structure 104 is the taper groove, and has a planar bottom surface 1044, but not as limit, in a further embodiment, the depression knot, 104 also can be coniform groove.
Refer back to Fig. 1 again, after the light that light source 11 sends gets into LGP 10 inside via the sunk structure on the incidence surface 101 104, the exiting surface 102 that after 103 reflections of bottom surface, leads again, last light leaves LGP 10 via exiting surface 102.In this process, sunk structure 104 increases the shooting angle of light greatly, to enlarge the distribution of light on LGP 10, has eliminated the hot spot phenomenon, makes panel luminance more even.
Adopt the present invention, be utilized in sunk structure is set on the LGP, make the light distribution that comes from light source wider, glue is distributed on the LGP equably, to eliminate the hot spot phenomenon, further promotes the uniformity of panel luminance.
In the preceding text, illustrate and describe the specific embodiment of the present invention.But those skilled in the art can understand, and under situation without departing from the spirit and scope of the present invention, can also specific embodiments of the invention do various changes and replacement.These changes and replacement all drop in claims of the present invention institute restricted portion.
Claims (7)
1. a module backlight is characterized in that, comprising:
LGP comprises:
One incidence surface has at least one closed sunk structure from the inside convergent of said incidence surface, and said sunk structure sidewall has concentric concaveconvex structure, and the crest line of said concaveconvex structure is parallel with said incidence surface with valley line;
Exiting surface links to each other with said incidence surface is vertical; And
The bottom surface, relative with said exiting surface; And
Light source, contiguous said incidence surface is positioned at a side of said LGP, the corresponding said sunk structure of said light source.
2. module backlight according to claim 1 is characterized in that, said sunk structure is the taper groove.
3. module backlight according to claim 2 is characterized in that, said sunk structure is coniform groove.
4. module backlight according to claim 1 is characterized in that said sunk structure has a flat bottom surface.
5. according to the described module backlight of the arbitrary claim of claim 1 to 4, it is characterized in that said light source is a spot light.
6. module backlight according to claim 5 is characterized in that, said light source is a light emitting diode.
7. module backlight according to claim 5 is characterized in that, said light source is a laser diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100083382A CN102518998A (en) | 2012-01-09 | 2012-01-09 | Backlight module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100083382A CN102518998A (en) | 2012-01-09 | 2012-01-09 | Backlight module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102518998A true CN102518998A (en) | 2012-06-27 |
Family
ID=46290018
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100083382A Pending CN102518998A (en) | 2012-01-09 | 2012-01-09 | Backlight module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102518998A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104235684A (en) * | 2013-06-11 | 2014-12-24 | 台北科技大学 | Laser backlight plate |
| CN104698529A (en) * | 2015-03-27 | 2015-06-10 | 深圳市华星光电技术有限公司 | Light guide board, backlight module and liquid crystal display with light guide board |
| CN111856641A (en) * | 2019-04-28 | 2020-10-30 | 法雷奥照明湖北技术中心有限公司 | Light guide, light emitting device comprising the same, and motor vehicle |
-
2012
- 2012-01-09 CN CN2012100083382A patent/CN102518998A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104235684A (en) * | 2013-06-11 | 2014-12-24 | 台北科技大学 | Laser backlight plate |
| CN104698529A (en) * | 2015-03-27 | 2015-06-10 | 深圳市华星光电技术有限公司 | Light guide board, backlight module and liquid crystal display with light guide board |
| WO2016155116A1 (en) * | 2015-03-27 | 2016-10-06 | 深圳市华星光电技术有限公司 | Light guide plate, backlight module with same and liquid crystal display |
| CN111856641A (en) * | 2019-04-28 | 2020-10-30 | 法雷奥照明湖北技术中心有限公司 | Light guide, light emitting device comprising the same, and motor vehicle |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101495801B (en) | Surface area illumination device | |
| EP3321565A1 (en) | Backlight module and display device | |
| TWI471615B (en) | Backlight module and its optical lens | |
| CN103471009A (en) | Novel LED lens and liquid crystal display backlight screen | |
| CN105116477B (en) | Optical element, light guide plate, prism, backlight module and display device | |
| US9960327B2 (en) | Light emitting device and display equipment | |
| CN104508364B (en) | Member for controlling luminous flux, method for manufacturing same, display device, and light-emitting device | |
| TW201643341A (en) | Lens, light emitting device, and backlight module | |
| TWM466278U (en) | Thinning LED direct-type backlight module | |
| CN107850806A (en) | Side light type backlight device and liquid crystal display device | |
| US8613541B2 (en) | Light guide plate and backlight module including same | |
| US9435935B2 (en) | Light guide plate, backlight module and display device | |
| CN102518998A (en) | Backlight module | |
| TWI533058B (en) | Backlight module | |
| CN103292246B (en) | A kind of blooming piece, backlight module and display device | |
| CN104834049A (en) | Backlight module and liquid crystal display device | |
| TWI636307B (en) | Lens, light emitting device, and backlight module | |
| US9086592B2 (en) | Direct illumination type backlight module, bottom reflector and liquid crystal display | |
| CN103399371A (en) | Light guide plate, backlight module and liquid crystal display device | |
| CN204477814U (en) | Backlight module | |
| TWM446344U (en) | Backlight module and optical lens thereof | |
| US10459144B2 (en) | Display module | |
| US9234993B2 (en) | Backlight module | |
| US20190331965A1 (en) | Light source module, backlight module, and lcd device | |
| CN104344283A (en) | Backlight module |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C05 | Deemed withdrawal (patent law before 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120627 |