CN101907262A - Positioning mechanism and back light module - Google Patents
Positioning mechanism and back light module Download PDFInfo
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- CN101907262A CN101907262A CN2009102031785A CN200910203178A CN101907262A CN 101907262 A CN101907262 A CN 101907262A CN 2009102031785 A CN2009102031785 A CN 2009102031785A CN 200910203178 A CN200910203178 A CN 200910203178A CN 101907262 A CN101907262 A CN 101907262A
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- diaphragm
- detent mechanism
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Abstract
The invention provides a positioning mechanism and a back light module. The positioning mechanism is used for positioning a membrane, and the edge of the membrane is provided with at least one position limiting part. The positioning mechanism comprises a frame and an elastic structure, wherein the elastic structure is provided with a first part and a second part, the first part is combined and fixed with the frame, and the second part is matched with the position limiting part to provide pretension force on the membrane. The pretension force for the membrane is provided by using the elastic structure of the positioning mechanism and is used for regulating the expansion and shrinking amount of the membrane due to temperature and humidity variation so as to eliminate the problem of membrane wrapping.
Description
Technical field
The present invention is about a kind of diaphragm detent mechanism and module backlight, particularly has diaphragm detent mechanism and a module backlight that prevents that ripple (mura defect) from producing relevant for a kind of.
Background technology
In recent years, the occupation rate of market of LCD (TFT-LCD) improves year by year and has almost replaced conventional cathode ray tube (CRT) display, be widely used on the various electronic goods, for example: PDA(Personal Digital Assistant), mobile computer, desktop PC, TV or the like.In LCD, can be divided into the two large divisions, the one, backlight module can provide stable and uniform light; The 2nd, liquid crystal panel (mainly forming) by two substrates clamping liquid crystal layer, be located at backlight module light and penetrate part, rotate by the liquid crystal molecule in the control liquid crystal panel, change the direct of travel of light in liquid crystal panel, cause light and shade difference in the liquid crystal panel zones of different, and reach the purpose that image shows.And as previously mentioned, because the required light of liquid crystal panel is provided by module backlight provide fully, make the product key properties such as display brightness, the uniformity, contrast and visible angle of LCD influenced by module backlight.
Therefore, for the light that module backlight is sent is able to more uniform dispersing, various blooming piece is set in module backlight, such as LGP, brightness enhancement film, diffusion sheet and prismatic lens or the like, to adjust irradiant briliancy and distribution, produce best distribution of light sources, improve image display quality.
See also Fig. 1 and Fig. 2, Fig. 1 shows the schematic diagram of module backlight of the prior art, that is the fixed structure of the blooming lamella 2 of module backlight 1, the generalized section after Fig. 2 demonstration is cut along A-A ' position among Fig. 1.Module 1 backlight comprises at least one light source (not shown), blooming lamella (optical films) 2 and framework 3, and framework 3 is an example with the backboard.Certainly also include reflecting layer 7 and glue frame 8 etc.Light source is arranged between blooming lamella 2 and the framework 3, and through blooming lamella 2 and reflecting layer 7 (for example: diffusion sheet, rhombus lens etc.) light is made full use of and being uniformly dispersed by light that light source sent, and then produce required mixed light color.8 of glue frames combine fixed optics membrane layer 2 and display floater etc. with backboard 3.For convenience of description, in Fig. 1 and Fig. 2, omitted panel and other elements of LCD, so with the clear fixed structure of expressing module 1 backlight.
One end of blooming lamella 2 has outward extending a plurality of extension 4.Then be respectively equipped with hole 5 in the middle of each extension 4.Then be provided with the projection 6 of respective amount on the corresponding backboard 3, correspond respectively to a plurality of extensions 4.During to backboard 3, the hole 5 of the extension 4 of blooming lamella 2 makes projection 6 pass wherein respectively, and the extension 4 of blooming lamella 2 is combined with backboard 3 to prevent that blooming piece layer 2 from coming off in conjunction with the blooming lamella 2 of fixing module 1 backlight.
Yet, above-mentioned design only has positioning function, there is no the rising-heat contracting-cold effect that factors such as considering variations in temperature can cause blooming piece, this meeting and then cause the distortion or warpage (Waving) phenomenon of blooming piece, cause problems such as optical performance inequality and local ripple vestige to produce, thereby influence the display quality.
Summary of the invention
In view of this, the objective of the invention is to solve diaphragm and changed by humiture to produce the problem that the harmomegathus amount causes warping of membrane,, provide the blooming piece pretension, to reach the warpage of elimination diaphragm by cooperating of the limiting section of elastic construction and framework and diaphragm.
For reaching above-mentioned purpose, the invention provides a kind of detent mechanism, be used for the location of diaphragm, the edge of this diaphragm has at least one limiting section, and this detent mechanism comprises framework and elastic construction.Elastic construction has first and second portion, and this first combines fixing with this framework, and this second portion cooperates with this limiting section, provides pretension on this diaphragm.
As optional technical scheme, this limiting section is perforation or groove.
As optional technical scheme, this second portion is a projection cube structure, and the lateral dimension of this projection cube structure is greater than the size of this limiting section.
As optional technical scheme, elastic construction has flexible member.
The present invention also provides a kind of module backlight, and this module backlight comprises diaphragm and detent mechanism, and the edge of this diaphragm has at least one limiting section; This detent mechanism comprises framework and elastic construction.Elastic construction has first and second portion, and this first combines fixing with this framework, and this second portion cooperates with this limiting section, provides pretension on this diaphragm.
As optional technical scheme, this limiting section is perforation or groove.
As optional technical scheme, this second portion is a projection cube structure, and the lateral dimension of this projection cube structure is greater than the size of this limiting section.
As optional technical scheme, elastic construction has flexible member.
As optional technical scheme, this framework is the glue frame.
As optional technical scheme, this framework is a backboard.
Can be about the advantages and spirit of the present invention by following detailed Description Of The Invention and appended graphic being further understood.
Description of drawings
Fig. 1 shows the schematic diagram of module backlight of the prior art;
Generalized section after Fig. 2 demonstration is cut along A-A ' position among Fig. 1;
Fig. 3 shows the schematic diagram according to first embodiment of module backlight of the present invention;
Fig. 4 shows the detent mechanism and local enlarged diagram after diaphragm combines among Fig. 3;
Fig. 5 shows the schematic diagram according to second embodiment of module backlight of the present invention;
Fig. 6 shows the detent mechanism and local enlarged diagram after diaphragm combines among Fig. 5;
Fig. 7 shows the schematic diagram according to the 3rd embodiment of module backlight of the present invention;
Fig. 8 shows the schematic diagram of elastic construction among Fig. 7;
Generalized section after Fig. 9 demonstration is cut along B-B ' position among Fig. 7.
The specific embodiment
See also Fig. 3 and Fig. 4, Fig. 3 shows the schematic diagram according to first embodiment of module backlight of the present invention, and Fig. 4 shows the detent mechanism and local enlarged diagram after diaphragm combines among Fig. 3.Module backlight of the present invention is used for display unit; module 10 backlight comprises diaphragm 11 and detent mechanism 13; diaphragm 11 is a blooming piece; for example diffusion sheet, prismatic lens are again or protection diaphragm or the like; the enhancing effect that cooperates diffusion sheet and prismatic lens; module 10 backlight can produce best distribution of light sources, improves image display quality.And module 10 backlight also includes reflecting layer 21, in order to the light reflection is entered LGP light penetrated from the exiting surface of LGP.The edge of blooming piece 11 has at least one limiting section 12.Limiting section 12 for example is perforation or groove.
Understandable, blooming piece 11 can have only an end to fix by detent mechanism 13, and the other end then fixes as utilizing framework pressing etc. by module backlight mechanism; Perhaps the two ends of blooming piece 11 all fix by detent mechanism 13, and the point of application also can be decided according to real needs more than more than 2 o'clock.
See also Fig. 5 and Fig. 6, Fig. 5 shows the schematic diagram according to second embodiment of module backlight of the present invention, and Fig. 6 shows the detent mechanism and local enlarged diagram after diaphragm combines among Fig. 5.Second embodiment structure different with first embodiment below only described.In second embodiment, difference is, module 10 backlight ' the framework 14 ' be the glue frame for example of detent mechanism, utilize plastic cement material to form.Framework 14 ' be provided with cylinder 141 '.Elastic construction 15 ' have first 16 ' and second portion 17 ', first 16 ' fixing with framework 14 ' combine, second portion 17 ' with limiting section 12 ' cooperate, wherein first 16 ' with framework 14 ' be fixed as with first 16 ' be wrapped in framework 14 ' cylinder 141 ' on, since framework 14 ' be plastic cement material, have certain elasticity, can provide pretension in blooming piece 11 ' on.Can certainly be alternate manner, for example it be engaged by snap-in structure.Elastic construction 15 ' second portion 17 ' then by bulge-structure and limiting section 12 ' combine, that is with limiting section 12 ' be that borehole or groove structure are corresponding, second portion 17 ' for example be projection cube structure, and the lateral dimension of projection cube structure greater than limiting section 12 ' size that is to say after second portion 17 ' pass limiting section is borehole or groove 12, second portion 17 ' not can from limiting section 12 ' disengaging.
See also Fig. 7, Fig. 8 and Fig. 9, Fig. 7 shows that Fig. 8 shows the schematic diagram of elastic construction among Fig. 7 according to the schematic diagram of the 3rd embodiment of module backlight of the present invention, the generalized section after Fig. 9 demonstration is cut along B-B ' position among Fig. 7.Same also only describe in the 3rd embodiment with first embodiment in different structures.In the 3rd embodiment, four corners of module 10 backlight " in blooming piece 11 " are provided with limiting section 12 "; limiting section 12 " comprises two groove structures 121,122, corresponding elastic construction 15 " first 16 " is a cavernous structure, the thickness of second portion 17 " being two projection cube structures 171,172; wherein the sidepiece at projection cube structure 171,172 also offers recessed joint, corresponding blooming piece 11 ".Framework 14 " for example be the glue frame, dig and be provided with perforate wherein " to go up corresponding first 16 " in framework 14 by the cavernous structure place.During assembling, with elastic construction 15 " second portion 17 " be projection cube structure 171,172 respectively with limiting section 12 " two groove structures 121,122 combine; the recessed joint of projection cube structure 171,172 sides " is combined with blooming piece 11, location blooming piece 11 "; be blooming piece 11 simultaneously " pretension is provided, even blooming piece 11 " is in little extended state.Utilizing screw to pass through perforate corresponding with it in the first 16 " cavernous structure and framework 14 " at last again " locks elastic construction 15 in framework 14 ".
In sum, the present invention cooperates by elastic construction and framework and diaphragm limiting section, provide the blooming piece pretension blooming piece to be done the stretching of horizontal direction, remove balance blooming piece internal stress with tensile stress, solve the warping of membrane phenomenon that diaphragm optics is caused by generation harmomegathus amount such as humiture variation.
By the detailed description of the above specific embodiment, be to wish to know more to describe feature of the present invention and spirit, and be not to come claim scope of the present invention is limited with the above-mentioned disclosed specific embodiment.On the contrary, its objective is that hope can contain in being arranged in of various changes and the tool equality claim scope of the present invention.Therefore, claim scope of the present invention should be done the broadest explanation according to above-mentioned explanation, contains the arrangement of all possible change and tool equality to cause it.
Claims (10)
1. detent mechanism is used for the location of diaphragm, and the edge of this diaphragm has at least one limiting section, it is characterized in that this detent mechanism comprises
Framework; And
Elastic construction has first and second portion, and this first combines fixing with this framework, and this second portion cooperates with this limiting section, provides pretension on this diaphragm.
2. detent mechanism as claimed in claim 1 is characterized in that this limiting section is perforation or groove.
3. detent mechanism as claimed in claim 2 it is characterized in that this second portion is a projection cube structure, and the lateral dimension of this projection cube structure is greater than the size of this limiting section.
4. detent mechanism as claimed in claim 1 is characterized in that this elastic construction has flexible member.
5. a module backlight is characterized in that this module backlight comprises
Diaphragm, the edge of this diaphragm has at least one limiting section; And
Detent mechanism, this detent mechanism comprises
Framework; And
Elastic construction has first and second portion, and this first combines fixing with this framework, and this second portion cooperates with this limiting section, provides pretension on this diaphragm.
6. module backlight as claimed in claim 5 is characterized in that this limiting section is perforation or groove.
7. detent mechanism as claimed in claim 6 it is characterized in that this second portion is a projection cube structure, and the lateral dimension of this projection cube structure is greater than the size of this limiting section.
8. module backlight as claimed in claim 5 is characterized in that this elastic construction has flexible member.
9. module backlight as claimed in claim 5 is characterized in that this framework is the glue frame.
10. module backlight as claimed in claim 5 is characterized in that this framework is a backboard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102031785A CN101907262A (en) | 2009-06-03 | 2009-06-03 | Positioning mechanism and back light module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102031785A CN101907262A (en) | 2009-06-03 | 2009-06-03 | Positioning mechanism and back light module |
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| Publication Number | Publication Date |
|---|---|
| CN101907262A true CN101907262A (en) | 2010-12-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009102031785A Pending CN101907262A (en) | 2009-06-03 | 2009-06-03 | Positioning mechanism and back light module |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103090323A (en) * | 2013-01-31 | 2013-05-08 | 深圳市华星光电技术有限公司 | Diaphragm positioning structure and backlight module thereof |
| WO2014040325A1 (en) * | 2012-09-11 | 2014-03-20 | 深圳市华星光电技术有限公司 | Edge type led backlight module, liquid crystal display device and fixation method of reflective sheet |
| CN103939851A (en) * | 2014-03-25 | 2014-07-23 | 京东方科技集团股份有限公司 | Backlight module frame, backlight module and display device |
| CN105629573A (en) * | 2016-03-08 | 2016-06-01 | 昆山龙腾光电有限公司 | Backlight module and liquid crystal display device |
| CN106773311A (en) * | 2017-01-05 | 2017-05-31 | 京东方科技集团股份有限公司 | For the support frame in backlight module, backlight module and display device |
| CN108037619A (en) * | 2018-01-25 | 2018-05-15 | 惠州市华星光电技术有限公司 | Backlight module and liquid crystal display |
| CN109375414A (en) * | 2018-10-23 | 2019-02-22 | 惠州市华星光电技术有限公司 | A kind of backlight module |
-
2009
- 2009-06-03 CN CN2009102031785A patent/CN101907262A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014040325A1 (en) * | 2012-09-11 | 2014-03-20 | 深圳市华星光电技术有限公司 | Edge type led backlight module, liquid crystal display device and fixation method of reflective sheet |
| CN103090323A (en) * | 2013-01-31 | 2013-05-08 | 深圳市华星光电技术有限公司 | Diaphragm positioning structure and backlight module thereof |
| CN103090323B (en) * | 2013-01-31 | 2016-03-30 | 深圳市华星光电技术有限公司 | Diaphragm location structure and backlight module thereof |
| CN103939851A (en) * | 2014-03-25 | 2014-07-23 | 京东方科技集团股份有限公司 | Backlight module frame, backlight module and display device |
| CN105629573A (en) * | 2016-03-08 | 2016-06-01 | 昆山龙腾光电有限公司 | Backlight module and liquid crystal display device |
| CN105629573B (en) * | 2016-03-08 | 2018-09-18 | 昆山龙腾光电有限公司 | Backlight module and liquid crystal display device |
| CN106773311A (en) * | 2017-01-05 | 2017-05-31 | 京东方科技集团股份有限公司 | For the support frame in backlight module, backlight module and display device |
| CN106773311B (en) * | 2017-01-05 | 2019-09-03 | 京东方科技集团股份有限公司 | For braced frame, backlight module and the display device in backlight module |
| CN108037619A (en) * | 2018-01-25 | 2018-05-15 | 惠州市华星光电技术有限公司 | Backlight module and liquid crystal display |
| CN108037619B (en) * | 2018-01-25 | 2020-08-04 | 惠州市华星光电技术有限公司 | Backlight module and liquid crystal display |
| CN109375414A (en) * | 2018-10-23 | 2019-02-22 | 惠州市华星光电技术有限公司 | A kind of backlight module |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20101208 |