CN1996128A - Reflection housing for back light module and method of manufacturing same - Google Patents
Reflection housing for back light module and method of manufacturing same Download PDFInfo
- Publication number
- CN1996128A CN1996128A CN 200610172070 CN200610172070A CN1996128A CN 1996128 A CN1996128 A CN 1996128A CN 200610172070 CN200610172070 CN 200610172070 CN 200610172070 A CN200610172070 A CN 200610172070A CN 1996128 A CN1996128 A CN 1996128A
- Authority
- CN
- China
- Prior art keywords
- light
- guide plate
- light guide
- reflex housing
- micro
- 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.)
- Granted
Links
Images
Landscapes
- Planar Illumination Modules (AREA)
Abstract
The reflective hood for aphototropic comprises light source, light conductive plate with incidence phase and vertically arranged light exit with it, No. 1 part of the emitted light received by the incidence phase of the light conductive plate to send out from the exit surface through the inside of the light conductive plate. The reflective hood comprises the body and micro protruding structure with the body defining the containing space to contain the light source, the body having No. 1 and No. 2 end area defined with openings, incidence phase of the light conductive plate opposite to the light source through the top of the opening, with the No. 1 end area adjacent to the grain surface, with the No. 2 end area away from the grain surface. The micro protruding structure is set at the No. 1 end area facing the No. 2 end area, diffusing the No. 2 lights to the said light conductive plate through the micro protruding structure.
Description
Technical field
The present invention relates to backlight module; Relate in particular to a kind of reflex housing and manufacture method thereof that is applied in the backlight module.
Background technology
Common LCD mainly comprises a liquid crystal panel and a backlight module at present, and wherein backlight module is in order to provide light source to liquid crystal panel, with show image on LCD.Because LCD thin thickness, light weight and easy to carry, demand increases fast in recent years, occupies a tiny space in the market of display.
Generally speaking, backlight module has developed and different structures according to different requirements, usually the backlight module that is applied to middle-size and small-size panel has side-light type (edge type) structure, the light source design that it is characterized in that side incident light guide plate, the characteristic that it has in light weight, thin thickness and low consumption electric power is the light source type of preference during notebook computer is made.
The backlight module of tool side-light type structure comprises a light source, and it is installed on the side of whole module, in order to provide whole LCD required light.In addition, backlight module also comprises a light guide plate and a reflex housing, and wherein, reflex housing can be contained in light source wherein, and is connected with light guide plate.Behind light emitted one light, the bootable light of reflex housing as far as possible all enters in the light guide plate it, changes the light of side light source into plane light by light guide plate, and makes its homogenising, for the liquid crystal panel show image.
See also Fig. 1, show traditional backlight module 10 among the figure, it comprises light source 11, light guide plate 12 and reflex housing 13.This backlight module often has the light and shade striped appearance at interval of big contrast on the display screen of adjacent side light source 11, seriously influence the homogenising of LCD brightness, and as shown in Figure 2, this striped is commonly referred to as the MURA flaw.The reason that produces this flaw is numerous, and one of them is owing to the interval striped that light leaks outside and causes light and shade takes place on the composition surface that comes from 13 of light guide plate 12 and reflex housings.
At present existing several different methods is in order to solve the MURA phenomenon, for example with light guide plate 12 composition surfaces near reflex housing 13 inboards 14, coating light absorbing material is to reduce the influence of this composition surface for brightness irregularities.Yet the method will the available light of sacrificial section, causes the LCD overall brightness to descend.The method of this coating light absorbing material, can on reflex housing inboard 14, utilize 3 to 4 road typographies that the surface is handled, absorb or break up the light on the contiguous composition surface of part with this, though this practice can promote the homogeneity of light a little, but the impairment of overall brightness still surpasses expection, and the process complexity will increase manufacturing cost in addition.
Summary of the invention
The object of the present invention is to provide a kind of reflex housing that is used for backlight module,, increase the homogeneity of LCD brightness in order to overcome the MURA flaw of prior art.This backlight module has a light source and a light guide plate, this light guide plate has an incidence surface and reaches and the vertical in fact exiting surface of this incidence surface, first's light that this light source is launched, after the incidence surface reception via this light guide plate, through the inside of this light guide plate, this light is penetrated towards the exiting surface of this light guide plate.
Reflex housing of the present invention comprises a body and a micro-protrusions structure, this body defining one accommodation space wherein, to hold this light source, this body has a first end zone and a second end zone, this first end zone and this second end region deviding go out an opening, and the incidence surface of this light guide plate is faced this light source in fact by this opening, wherein, this this exiting surface of first end region adjacent, this second end zone is away from this exiting surface.In addition, the micro-protrusions structure is arranged at this first end zone, and towards this second end zone, will be from a second portion light of this light source projects, via this micro-protrusions structure, diffusion is to this light guide plate.
Another object of the present invention is to provide a kind of manufacturing to be used for the method for the reflex housing of backlight module, wherein this backlight module has a light source and a light guide plate, this light guide plate has an incidence surface and reaches and the vertical in fact exiting surface of this incidence surface, first's light that this light source is launched, after the incidence surface reception via this light guide plate, through an inside of this light guide plate, this light is penetrated towards the exiting surface of this light guide plate.This method is the extra Sheet Metal Forming Technology that adds in the processing of original reflex housing only, can reach the effect of improving the MURA flaw, and this method comprises the following step:
Form a first end zone and a relative the second end zone,, make the incidence surface of this light guide plate face this light source in fact by this opening to constitute an opening; And with an impact style in the surface of this first end area surface to this second end zone, form a micro-protrusions structure, will be from a second portion light of this light source projects, via this micro-protrusions structure, diffusion is to this light guide plate.
For above-mentioned purpose of the present invention, technical characterictic and advantage can be become apparent, hereinafter be elaborated with the preferred embodiment conjunction with figs..
Description of drawings
Fig. 1 is a partial schematic diagram of prior art backlight module;
The MURA flaw that Fig. 2 is had for the prior art light guide plate;
Fig. 3 is a partial schematic diagram of backlight module of the present invention;
Fig. 4 A is top view and the side view of an embodiment of micro-protrusions structure of the present invention;
Fig. 4 B is top view and the side view of another embodiment of micro-protrusions structure of the present invention;
Fig. 4 C is top view and the side view of the another embodiment of micro-protrusions structure of the present invention;
Fig. 5 is with respect to Fig. 2, for the present invention improves result behind the MURA flaw.
Wherein, description of reference numerals is as follows:
10 backlight modules, 11 light sources, 12 light guide plate
13 reflex housings, 14 inboard 100 backlight modules
110 light sources, 112 first's light, 114 second portion light
120 light guide plate, 122 incidence surfaces, 124 exiting surfaces
130 reflex housings, 132 body 132A first end zones
132B the second end zone 134 micro-protrusions structures
134A, 134B, 134C micro-protrusions
Embodiment
See also Fig. 3, show a preferred embodiment of backlight module of the present invention among the figure, this backlight module 100 comprises light source 110, light guide plate 120 and reflex housing 130, need to prove, for asking easy a part of light guide plate 120 that only shows, it is different that all the other parts that do not show and prior art there is no, and therefore omitted.
Reflex housing 130 comprises a body 132.In specific embodiment, body 132 is made up of metal material, for example metal material such as aluminium, stainless steel.After this body 132 utilized metal stamping formed mode to make required external form earlier, whole again bending formed, to define an accommodation space and an opening.This accommodation space can be used for holding light source 110, and this opening is in order to connect light guide plate 120, and the light that light source 110 is launched imports within this light guide plate 120 as much as possible.
Furthermore, the body 132 of reflex housing 130 has first end zone 132A and the second end zone 132B.Wherein, first end zone 132A and the second end zone 132B define this opening jointly, and the incidence surface 122 of light guide plate 120 is faced light source 110 in fact by this opening.In addition, the contiguous exiting surface 124 of first end zone 132A, and the second end zone 132B with respect to the regional 132A of first end away from exiting surface 124.
Reflex housing 130 also comprises a micro-protrusions structure 134, and it is arranged at first end zone 132A, and towards the second end zone 132B.This micro-protrusions structure 134 can be with the second portion light 114 from light source 110 projections, diffusion is to light guide plate 120, with this homogeneity that promotes the interior light of light guide plate (especially near light source side edge regions), the MURA phenomenon that reduces prior art effectively and had.
In specific embodiment, the micro-protrusions structure 134 of reflex housing 130 of the present invention is punching structures.Specifically, the micro-protrusions structure 134 of reflex housing 130 of the present invention is implemented a metal stamping in addition in the suitable position of body 132 and is handled, or merge the punching press program of body 132 after body 132 impact briquettings, after the one-shot forming, is bent to solid shape again.That is to say that in the present embodiment, the micro-protrusions structure 134 of reflex housing 130 of the present invention is that the inside surface at the first end of this body 132 zone 132A is stamped to form.Preferably, at least a portion of first end zone 132A is covered in the part of the exiting surface 124 of light guide plate 120, makes the light of this part be able to more effectively diffusion to light guide plate 120, reduces the influence that composition surface light leaks outside.Compare with the process of surface treatment of existing printing reflex housing 13, the present invention only needs the punch steps of one micro-protrusions structure, can merge the technology one-shot forming of reflex housing even; Therefore can simplify processing effectively, and cut down finished cost, and the micro-protrusions structure that is obtained, have significantly profile, make astigmatic effect better, more lasting.
Aforementioned micro-protrusions structure 134 visual different needs, and have different forms of implementation.For example can comprise a plurality of projectioies, and have size heterogeneous between each above-mentioned projection.In addition, also visual different needs of the distribution of above-mentioned projection and being changed, for example, above-mentioned a plurality of protruding 134A can have irregular alignment (shown in Fig. 4 A), perhaps above-mentioned a plurality of protruding 134B, 134C can matrix forms regularly arranged (shown in Fig. 4 B and Fig. 4 C), and above-mentioned projection can have arranging density even or heterogeneous and changes.Specifically, each above-mentioned projection that the tool matrix form distributes also can optionally be arranged in pairs or groups and be changed its size, similarly, the arranging density of above-mentioned projection also can be done identical variation, for example, the size of described projection and/or arranging density are on the direction away from light source 110, present and increase progressively, successively decrease or linear increment (shown in Fig. 4 B), linear decrease (shown in Fig. 4 C), or the arrangement of its hybrid mode, can have a circular protrusions as for each above-mentioned projection itself, pointed projection, the polygon projection (is for example observed projection by the transversal section, is had the trapezoidal of two corner projectioies, necktie tail end shape with three corner projectioies, or have a cerioid of the above projection in four corners) or other form.
In addition, this body has an inside surface, and this micro-protrusions structure 134 also can be from this first end regions, along at least a portion of this body or all, extends and is arranged on this inside surface; This form of implementation can be finished easily by the design of punching press program, and because of this technology belongs to the extension of an embodiment, easy to understand is so no longer narrate or be illustrated among the application.
In a word, the present invention changes according to the difference of micro-protrusions structure arrangement mode on the reflex housing, changes position, intensity and the uniformity coefficient of shade line on the light guide plate in fact.For example, when practical application,, it is had by little gradually big change in size (shown in Fig. 4 B), to improve this regional MURA phenomenon if, can adjust the micro-protrusions structure on the reflex housing when bright line during relatively near light source place (situation as shown in Figure 2).This improvement situation sees also Fig. 5, it is compared with Fig. 2, can obviously find out, the oolemma near the light guide plate the light source, its width reduces many, and and the contrast between blanking bar also obviously descends, the oolemma that is remained for LCD, has been difficult to the naked eyes identification in fact, so significantly promote the homogeneity of LCD brightness, improve the quality of image quality output.
Below explanation is a kind of method of making the reflex housing of the aforementioned feature of tool, and this method comprises the following step.At first, form reflex housing body external form with impact style with first end zone and relative the second end zone.Then, on the surface in this second end zone, form the micro-protrusions structure with impact style in this first end area surface again.Wherein, first end zone and opposite second end zone constitute an opening, the incidence surface that makes light guide plate is by this opening and in fact in the face of this light source, and make that diffusion promotes the homogeneity of LCD brightness to this light guide plate by this micro-protrusions structure from a second portion light of this light source projects.
The formation of above-mentioned micro-protrusions structure according to required, also can extend to form at least a portion or Zone Full of an inside surface of this body from this first end zone, and more flexible manufacture process is provided thus.
The above embodiments only are used for exemplifying form of implementation of the present invention, and explain technical characterictic of the present invention, are not to be used for limiting protection scope of the present invention.Those skilled in the art can unlabored change or the variation of the identity property scope that all belongs to the present invention and advocated, and the scope of the present invention should be as the criterion with the scope of claim.
Claims (19)
1. reflex housing that is used for backlight module, this backlight module has a light source and a light guide plate, this light guide plate has an incidence surface and reaches and the vertical in fact exiting surface of this incidence surface, first's light that this light source is launched, after can receiving via the incidence surface of this light guide plate, through the inside of this light guide plate, towards the exiting surface of this light guide plate this light is penetrated, this reflex housing comprises:
One body, define an accommodation space, in order to hold this light source, this body has a first end zone and a second end zone, this first end zone and this second end region deviding go out an opening, and the incidence surface of this light guide plate is faced this light source in fact by this opening, wherein, this this exiting surface of first end region adjacent, this second end zone is away from this exiting surface; And
One micro-protrusions structure is arranged at this first end zone, and towards this second end zone, a second portion light of this light emitted can be via this micro-protrusions structure diffusion to this light guide plate certainly.
2. reflex housing as claimed in claim 1, wherein this micro-protrusions structure is a punching structure.
3. reflex housing as claimed in claim 2, wherein this micro-protrusions structure comprises a plurality of projectioies, and it has size heterogeneous.
4. reflex housing as claimed in claim 3, wherein above-mentioned a plurality of protruding irregular alignments.
5. reflex housing as claimed in claim 3, wherein above-mentioned a plurality of projectioies are regularly arranged with a matrix form.
6. reflex housing as claimed in claim 5, wherein the size of above-mentioned a plurality of projectioies is successively decreased away from the direction of this light source.
7. reflex housing as claimed in claim 5, wherein the size of above-mentioned a plurality of projectioies is linear decrease away from the direction of this light source.
8. reflex housing as claimed in claim 2, wherein this micro-protrusions structure comprises a plurality of projectioies, has arranging density heterogeneous therebetween.
9. reflex housing as claimed in claim 8, wherein the arranging density of above-mentioned a plurality of projectioies successively decreases with the direction away from this light source.
10. reflex housing as claimed in claim 9, wherein the arranging density of above-mentioned a plurality of projectioies is linear decrease with the direction away from this light source.
11. reflex housing as claimed in claim 1, wherein at least a portion in this first end zone is covered in the part of the exiting surface of this light guide plate.
12. reflex housing as claimed in claim 3, wherein above-mentioned a plurality of projectioies comprise a plurality of circular protrusions.
13. reflex housing as claimed in claim 3, wherein above-mentioned a plurality of projectioies comprise a plurality of pointed projectioies.
14. reflex housing as claimed in claim 3, wherein above-mentioned a plurality of projectioies comprise a plurality of polygon projectioies.
15. as each described reflex housing among the claim 1-14, wherein this body has an inside surface, this micro-protrusions structure is from this first end zone, and along at least a portion of this body, extension is arranged on this inside surface.
16. reflex housing as claimed in claim 15, wherein this micro-protrusions structure is from this first end zone, and whole along this body extend and are arranged on this inside surface.
17. a manufacturing is used for the method for the reflex housing of backlight module, wherein this backlight module has a light source and a light guide plate, this light guide plate has an incidence surface and reaches and the vertical in fact exiting surface of this incidence surface, first's light that this light source is launched, after can receiving via the incidence surface of this light guide plate, through the inside of this light guide plate, towards the exiting surface of this light guide plate this light is penetrated, this method comprises the following step:
Form a first end zone and a relative the second end zone, to constitute an opening, the incidence surface of this light guide plate is faced this light source in fact by this opening; And
In the surface of this first end area surface, form a micro-protrusions structure with an impact style to this second end zone, will from a second portion light of this light source projects via this micro-protrusions structure diffusion to this light guide plate.
18. method as claimed in claim 17 wherein forms in the step of a micro-protrusions structure at this, and described micro-protrusions structure is extended at least a portion of an inside surface that is arranged at this body from this first end zone.
19. method as claimed in claim 18 wherein forms in the step of a micro-protrusions structure at this, and described micro-protrusions structure is extended on the Zone Full of the inside surface that is arranged at this body from this first end zone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101720700A CN100498467C (en) | 2006-12-29 | 2006-12-29 | Reflection housing for back light module and method of manufacturing same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101720700A CN100498467C (en) | 2006-12-29 | 2006-12-29 | Reflection housing for back light module and method of manufacturing same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1996128A true CN1996128A (en) | 2007-07-11 |
| CN100498467C CN100498467C (en) | 2009-06-10 |
Family
ID=38251258
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006101720700A Active CN100498467C (en) | 2006-12-29 | 2006-12-29 | Reflection housing for back light module and method of manufacturing same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100498467C (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102606952A (en) * | 2012-03-06 | 2012-07-25 | 深圳市华星光电技术有限公司 | Reflective incidence backlight module and liquid crystal display device |
| CN102042541B (en) * | 2009-09-18 | 2012-10-03 | 友达光电股份有限公司 | Backlight module and flat panel display |
| CN102736318A (en) * | 2011-04-06 | 2012-10-17 | 索尼公司 | Light source device, display, and electronic unit |
| CN103941325A (en) * | 2014-03-28 | 2014-07-23 | 京东方科技集团股份有限公司 | Light guide plate, manufacturing method of light guide plate, backlight module and display device |
| CN104676296A (en) * | 2013-11-27 | 2015-06-03 | 扬升照明股份有限公司 | Light source module |
| CN106200112A (en) * | 2014-08-22 | 2016-12-07 | 三星电子株式会社 | Framed, back light unit, liquid crystal display and light conversion sheet |
-
2006
- 2006-12-29 CN CNB2006101720700A patent/CN100498467C/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102042541B (en) * | 2009-09-18 | 2012-10-03 | 友达光电股份有限公司 | Backlight module and flat panel display |
| CN102736318A (en) * | 2011-04-06 | 2012-10-17 | 索尼公司 | Light source device, display, and electronic unit |
| CN102606952A (en) * | 2012-03-06 | 2012-07-25 | 深圳市华星光电技术有限公司 | Reflective incidence backlight module and liquid crystal display device |
| CN104676296A (en) * | 2013-11-27 | 2015-06-03 | 扬升照明股份有限公司 | Light source module |
| CN103941325A (en) * | 2014-03-28 | 2014-07-23 | 京东方科技集团股份有限公司 | Light guide plate, manufacturing method of light guide plate, backlight module and display device |
| CN106200112A (en) * | 2014-08-22 | 2016-12-07 | 三星电子株式会社 | Framed, back light unit, liquid crystal display and light conversion sheet |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100498467C (en) | 2009-06-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100498467C (en) | Reflection housing for back light module and method of manufacturing same | |
| KR100932304B1 (en) | Light guide plate for backlight unit having an asymmetric prism on the back and liquid crystal display using the same | |
| CN100353233C (en) | Optical module and positioning frame therein | |
| KR100942490B1 (en) | Light guide panel for LCD back light unit and LCD back light unit thereby | |
| CN103309084A (en) | Display device | |
| CN101561101A (en) | Backlight module | |
| CN1932604A (en) | Photoconducting plate and back light module using the same photoconducting plate | |
| CN101858545A (en) | Backlight module and liquid crystal display device | |
| CN101206338A (en) | Lcd | |
| US8130339B2 (en) | Backlight module | |
| CN211627969U (en) | Backlight module and vehicle-mounted display | |
| CN201706345U (en) | Backlight module and liquid crystal displaying device | |
| US20100245713A1 (en) | Light source device, backlight device, and liquid crystal display | |
| CN101165565B (en) | Bump mechanism and backlight module applying same | |
| US9684113B2 (en) | Light guide plate, and backlight unit and display device including the same | |
| CN104100880A (en) | Backlight unit and liquid crystal display device including the same | |
| CN201050739Y (en) | Light conducting board and liquid crystal display | |
| CN101743508A (en) | Light guide panel comprising symmetric front prism and asymmetric front prism for back light unit of LCD | |
| CN2862092Y (en) | Display device | |
| CN2938145Y (en) | Improved structure of light plate and liquid crystal display device with the plate | |
| CN202118702U (en) | Backlight module | |
| WO2007035013A1 (en) | Hole structure for fixing a sheet in backlight assembly | |
| CN108646452A (en) | A kind of liquid crystal display device | |
| US11175534B1 (en) | Liquid crystal display module, display device, and fabricating method thereof | |
| CN205028006U (en) | Backlight module and liquid crystal display device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |