CN101598869A - Backlight module and LCD - Google Patents
Backlight module and LCD Download PDFInfo
- Publication number
- CN101598869A CN101598869A CNA2008101111203A CN200810111120A CN101598869A CN 101598869 A CN101598869 A CN 101598869A CN A2008101111203 A CNA2008101111203 A CN A2008101111203A CN 200810111120 A CN200810111120 A CN 200810111120A CN 101598869 A CN101598869 A CN 101598869A
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- China
- Prior art keywords
- backlight module
- glue frame
- guide plate
- light guide
- housing
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Abstract
The invention discloses a kind of backlight module and LCD.This backlight module comprises a housing, a light source, a light guide plate, a glue frame and a plurality of buffer structure.Light source is disposed at the side in the housing, and light guide plate is disposed in the housing, and is positioned at by the light source, and light guide plate has a plurality of lugs, and wherein lug is the relative both sides that are positioned at light guide plate.The glue frame is disposed in the housing, and between light guide plate and light source, wherein the corresponding lug of glue frame place is provided with a plurality of recessed openings, and these recessed openings are suitable for carrying lug.In addition, buffer structure is arranged on the load-bearing surface of recessed openings of glue frame.By the setting of buffer structure, this backlight module has preferred shock resistance effect.
Description
Technical field
The present invention relates to a kind of display, and particularly relevant for a kind of impulse test yield good LCD and backlight module thereof.
Background technology
No matter be CRT display or liquid crystal indicator, all need backlight module that light is provided, just there is enough brightness to come display image.Backlight module can be divided into side incident type backlight module according to its configured light sources position, and direct type backlight module.
Figure 1A is the sectional view of known side incident type backlight module, and Figure 1B is for looking partial enlarged drawing on the light guide plate of the backlight module of Figure 1A and the framework.Show as Figure 1A and Figure 1B, in the backlight module 100 of side incident type, can the light direction of transfer that light guide plate 120 is revised light source 110 be set on light source 110 sides usually.For the ease of supporting and location light guide plate 120, so the both sides of light guide plate 120 have lug 122 usually, and the glue frame 130 of backlight module 100 has corresponding recessed openings 132 and allows lug 122 breastings.
No matter be which kind of display, before dispatching from the factory, all must accept impulse test, to help the reliability of manufacturer and client's criticism display.Fig. 2 A and Fig. 2 B are respectively that simulation one side has two lugs and a side to have only the light guide plate of a lug, the stress envelope at place, the R angle of lug in impulse test.Show that as Fig. 2 A and 2B backlight module is when accepting impulse test, the inertial force of light guide plate 120 can allow the R angle (right angle turnover) of recessed openings 132 and the place, R angle of lug 122 can produce the phenomenon that stress is concentrated.When a side of light guide plate 120 had two lugs 122, the maximum stress that place, R angle is subjected to was 48.7MPa; When a side of light guide plate 120 had only a lug 122, the maximum stress that place, R angle is subjected to was 51.8MPa.Therefore can learn that when a side of light guide plate 120 had only a lug 122, the carrying out of impulse test allowed the lug 122 of light guide plate 120 or the R angle of the recessed openings 132 of glue frame 130 locate to produce slight crack easily.
If light guide plate 120 has slight crack, can cause the display quality of display not good; If place, the R angle of recessed openings 132 produces slight crack, might cause light guide plate 120 displacements, or scratch light guide plate 120, and above-mentioned these reasons all can influence the display quality of display.
In order to improve above-mentioned problem, the known practice is a kind of be increase recessed openings 132 the turning point, right angle the R angular radius and increase the quantity of the lug 122 of light guide plate 120, the stress that is subjected to the place, R angle that reduces each recessed openings 132.Yet, increase the R angular radius and will make the effect of glue frame 130 breasting lugs 122 reduce, in addition, increase the mode of lug 122 quantity, can increase and produce man-hour, cause production cost to rise indirectly.
Summary of the invention
The invention provides the good backlight module of a kind of impulse test yield.
The invention provides a kind ofly after impulse test, still can keep the LCD of good display quality.
The present invention proposes a kind of backlight module, and it comprises a housing, a light source, a light guide plate, a glue frame and a plurality of buffer structure.Light source is disposed at the side in the housing, and light guide plate is disposed in the housing, and is positioned at by the light source, and light guide plate comprises a light conducting plate body and a plurality of lug, and wherein lug is the relative both sides that are positioned at light conducting plate body.The glue frame is disposed between light guide plate and the housing, and wherein the corresponding lug of glue frame place is provided with a plurality of recessed openings, and these recessed openings are suitable for carrying lug.In addition, buffer structure is arranged at the side of the recessed openings of glue frame near light conducting plate body.
In one embodiment of this invention, the material of above-mentioned housing is a metal.
In one embodiment of this invention, the width of above-mentioned buffer structure protrudes from the distance of light conducting plate body less than lug.
In one embodiment of this invention, above-mentioned buffer structure and glue frame are formed in one.
In one embodiment of this invention, the material of above-mentioned glue frame is the potpourri (glass fiber) of poly-carbonic acid resinoid (PC resinoid) or poly-carbonic acid resinoid and glass fibre.
In one embodiment of this invention, the content of glass fiber in the above-mentioned potpourri is 10% to 20%.
In one embodiment of this invention, above-mentioned backlight module comprises that also one is disposed at the adhesive coating between buffer structure and the glue frame.
The present invention proposes a kind of LCD in addition, and it comprises an above-mentioned backlight module and a display panels, and wherein display panels is disposed on the backlight module.
In one embodiment of this invention, above-mentioned LCD also comprises a blooming piece, and blooming piece is disposed between backlight module and the display panels.
In one embodiment of this invention, above-mentioned blooming piece comprises diffusion disk, brightening piece or prismatic lens.
The present invention forms a buffer structure on the load-bearing surface of the recessed openings of glue frame, and when backlight module is carried out impulse test, buffer structure can improve the problem of stress concentration of the recessed openings of the lug place of light guide plate and glue frame, and then promotes backlight module and use the yield of LCD after impulse test of this backlight module.
For above-mentioned feature and advantage of the present invention can be become apparent, preferred embodiment cited below particularly, and cooperate appended diagram, be described in detail below.
Description of drawings
Figure 1A is the sectional view of known side incident type backlight module.
Figure 1B is for looking partial enlarged drawing on the light guide plate of the backlight module of Figure 1A and the framework.
Fig. 2 A and Fig. 2 B are respectively that simulation one side has two lugs and a side to have only the light guide plate of a lug, the major principal stress distribution plan at place, the R angle of lug in impulse test.
Fig. 3 A is the sectional view of the backlight module of one embodiment of the invention.
Fig. 3 B is for looking partial enlarged drawing on the backlight module of Fig. 3 A.
Fig. 4 for the light guide plate of simulation present embodiment in impulse test, the stress envelope at the R angle of lug place.
Fig. 5 is the synoptic diagram of the LCD of the backlight module of use present embodiment.
Description of reference numerals
100,200: backlight module
110,220: light source
120,230: light guide plate
122,234: lug
130: the glue frame
132,242: recessed openings
210: housing
232: light conducting plate body
240: the glue frame
242a: load-bearing surface
250: buffer structure
260: adhesive coating
Embodiment
Fig. 3 A is the sectional view of the backlight module of one embodiment of the invention, and Fig. 3 B is for looking partial enlarged drawing on the backlight module of Fig. 3 A.Please also refer to Fig. 3 A and Fig. 3 B, backlight module 200 comprises a housing 210, a light source 220, a light guide plate 230, a glue frame 240 and a plurality of buffer structure 250.In the present embodiment, the material of housing 210 is a metal.
In addition, glue frame 240 is between light guide plate 230 and housing 210, and wherein the material of glue frame 240 can be poly-carbonic acid resinoid.Perhaps, in order to increase the hardness of glue frame 240, we also can will make glue frame 240 in the poly-carbonic acid resinoid of glass fibre adding, and the content of glass fibre in poly-carbonic acid resinoid is 10% to 20%.
Hold above-mentionedly, glue frame 240 corresponding lugs 234 places are provided with a plurality of recessed openings 242, and recessed openings 242 is suitable for carrying corresponding lug 234.These recessed openings 242 can be designed to blind hole or perforation according to user's demand.
In the present embodiment, backlight module 200 also comprises an adhesive coating 260, be disposed between the load-bearing surface 242a of buffer structure 250 and glue frame 240, and buffer structure 250 promptly is to be fixed on the load-bearing surface 242a of recessed openings 242 by adhesive coating 260.This adhesive coating 260 can be resin or adhesive tape.
In the embodiment that another does not illustrate, buffer structure 250 also can be one-body molded with glue frame 240.In other words, we just are formed at buffer structure 250 on the load-bearing surface 242a of recessed openings 242 when glue frame 240 forms in the lump.Thus, only need when the mould of design glue frame 240, buffer structure 250 is included in the scope of design, just can be more above-mentioned the mode that attaches of utilization more save the material cost of buffer structure 250 with the embodiment that buffer structure 250 is fixed in load-bearing surface 242a and make man-hour.
When table 1 carries out impulse test for backlight module known and present embodiment, the parameter and the Impulse Test Result of light guide plate and glue frame.Please refer to table 1, in known backlight module 100, the R angular diameter of light guide plate 120 and the R angular diameter of glue frame 130 are all 1.5 centimetres, and respectively there is a lug 122 the relative both sides of light guide plate 120, and wherein the width of lug 122 is 3.3 centimetres.In addition, light guide plate 120 is separated by 0.2 centimetre with glue frame 130 at directions X, is separated by 0.7 centimetre in the Y direction.
In the backlight module 200 of present embodiment, the R angular diameter of light guide plate 230 is 1.5 centimetres, and respectively there is a lug 234 the relative both sides of the light conducting plate body 232 of light guide plate 230, and wherein the width of lug 234 is 3 centimetres.In addition, the width of buffer structure 250 is 0.5 to 1.5 centimetre, and thickness is 0.5 to 2 centimetre.And light guide plate 230 is respectively 0.2 centimetre and 0.7 centimetre with glue frame 240 in the distance of directions X and Y direction.The R angle is not designed in the turning point, right angle of recessed openings 242 that it should be noted that the glue frame 240 of present embodiment.
Table 1
When backlight module 200 was carried out impulse test, backlight module 200 suffered impulsive forces were per 2 milliseconds of 120G.Fig. 4 for the light guide plate of simulation present embodiment in impulse test, the stress envelope at the R angle of lug place.Show as Fig. 4 and table 1, by the resulting result of simulation, the maximum stress that the place, R angle of lug 234 is subjected to is 41.8MPa, and the more known dispersion of stress distribution, and the maximum stress that the place, R angle of known lug 122 is subjected to is 51.8MPa, so the shear stress that the place, R angle of the more known lug 122 of the stress that is subjected to of the place, R angle of the lug 234 of present embodiment is subjected to reduces by 19.3%.In addition, respectively have the analog result of the light guide plate 120 of two lugs 122 to compare this analog result and known both sides, the maximum stress that the place, R angle of the lug 234 of present embodiment is subjected to is also lower.
From the above, when respectively there was a lug the relative both sides of light guide plate, buffer structure just can reduce the suffered stress of lug effectively.Therefore, if when the relative both sides of light guide plate are provided with a plurality of lug, the suffered stress of each lug also can diminish relatively.So, buffer structure is set on load-bearing surface, can reduce in the impulse test problem of stress concentration at the place, R angle of lug effectively.Therefore, use the backlight module of buffer structure of the present invention,, still can keep the complete of light guide plate, and then promote the impulse test yield of backlight module through after the impulse test.
In addition, spirit of the present invention is buffer structure to be set reducing the suffered stress of lug on load-bearing surface, and then avoids light conducting plate cracking and influence the optical effect of backlight module, but the present invention does not limit the shape of buffer structure.
In addition, in order more effectively to improve in the impulse test, stress concentrates on the problem at the place, R angle of lug 234 and recessed openings 242, and we also can set up the R angle in the turning point, right angle of recessed openings 242, and can utilize the diameter that increases the R angle, locate the stress that is subjected to effective reduction R angle.
Fig. 5 is the synoptic diagram of the LCD of the backlight module of use present embodiment.Please refer to Fig. 5, above-mentioned backlight module 200 is used in the LCD 400, because backlight module 200 still can keep the integrality of light guide plate 230 after impulse test, therefore backlight module 200 can have the good optical effect, and can provide enough brightness, and then allow LCD 400 can present good display frame to display panels 300.
In addition, in order to allow LCD 400 that better display effect is arranged, so we can be provided with a blooming piece 350 between display panels 300 and backlight module 200, and this blooming piece 350 can be diffusion disk, brightening piece or prismatic lens.
In sum, at backlight module of the present invention and use in the LCD of this backlight module, buffer structure can reduce the stress that the lug of light guide plate is subjected to, and then promotes the impulse test yield of backlight module, and can save cost of manufacture.In addition, backlight module is after the process impulse test, and its light guide plate still is kept perfectly, and therefore uses the LCD of this backlight module that good display quality can be arranged.
Though the present invention discloses as above with preferred embodiment; right its is not in order to limit the present invention; those of ordinary skill in the technical field under any; without departing from the spirit and scope of the present invention; when can doing a little change and retouching, so protection scope of the present invention is as the criterion when looking appended the claim person of defining.
Claims (16)
1. backlight module comprises:
One housing;
One light source is disposed at the side in this housing;
One light guide plate is disposed in this housing, and is positioned at by this light source, and this light guide plate comprises:
One light conducting plate body; And
A plurality of lugs, wherein those lugs are positioned at the relative both sides of this light conducting plate body;
One glue frame is disposed between this light guide plate and this housing, and wherein corresponding those lug places of this glue frame are provided with a plurality of recessed openings, and those recessed openings are suitable for carrying those lugs; And
A plurality of buffer structures are arranged at the side of those recessed openings of this glue frame near this light conducting plate body.
2. backlight module as claimed in claim 1, wherein the material of this housing is a metal.
3. backlight module as claimed in claim 1, wherein the width of those buffer structures protrudes from the distance of this light conducting plate body less than this lug.
4. backlight module as claimed in claim 1, wherein those buffer structures and this glue frame are formed in one.
5. backlight module as claimed in claim 1, wherein the material of this glue frame is the potpourri of poly-carbonic acid resinoid or poly-carbonic acid resinoid and glass fibre.
6. backlight module as claimed in claim 5, wherein the middle content of glass fiber of this potpourri is 10% to 20%.
7. backlight module as claimed in claim 1 also comprises an adhesive coating, is disposed between this buffer structure and this glue frame.
8. LCD comprises:
One backlight module comprises:
One housing;
One light source is disposed at the side in this housing;
One light guide plate is disposed in this housing, and is positioned at by this light source, and this light guide plate comprises:
One light conducting plate body; And
A plurality of lugs, wherein those lugs are positioned at the relative both sides of this light conducting plate body;
One glue frame is disposed in this housing, and between this light guide plate and this light source, wherein corresponding those lug places of this glue frame are provided with a plurality of recessed openings, and those recessed openings are suitable for carrying those lugs;
A plurality of buffer structures are arranged at the side of those recessed openings of this glue frame near this light conducting plate body; And
One display panels is disposed on this backlight module.
9. LCD as claimed in claim 8, wherein the material of this housing is a metal.
10. LCD as claimed in claim 8, wherein the width of those buffer structures protrudes from the distance of this light conducting plate body less than this lug.
11. LCD as claimed in claim 8, wherein those buffer structures and this glue frame are formed in one.
12. LCD as claimed in claim 8, wherein the material of this glue frame is the potpourri of poly-carbonic acid resinoid or poly-carbonic acid resinoid and glass fibre.
13. LCD as claimed in claim 12, wherein the middle content of glass fiber of this potpourri is 10% to 20%.
14. LCD as claimed in claim 8, backlight module also comprise an adhesive coating, are disposed between this buffer structure and this glue frame.
15. LCD as claimed in claim 8 also comprises a blooming piece, is disposed between this backlight module and this display panels.
16. LCD as claimed in claim 15, this blooming piece comprises diffusion disk, brightening piece or prismatic lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101111203A CN101598869A (en) | 2008-06-06 | 2008-06-06 | Backlight module and LCD |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101111203A CN101598869A (en) | 2008-06-06 | 2008-06-06 | Backlight module and LCD |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101598869A true CN101598869A (en) | 2009-12-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008101111203A Pending CN101598869A (en) | 2008-06-06 | 2008-06-06 | Backlight module and LCD |
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| CN (1) | CN101598869A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101943809A (en) * | 2010-09-04 | 2011-01-12 | 福建华映显示科技有限公司 | Display module |
| CN102901003A (en) * | 2011-07-25 | 2013-01-30 | 精工爱普生株式会社 | Lighting unit, liquid crystal display, and electronic apparatus |
| WO2013053152A1 (en) * | 2011-10-12 | 2013-04-18 | 深圳市华星光电技术有限公司 | Backlight module and liquid crystal display device |
| CN103256521A (en) * | 2012-02-21 | 2013-08-21 | 扬升照明股份有限公司 | Light source module and backlight module |
| WO2014012239A1 (en) * | 2012-07-17 | 2014-01-23 | 深圳市华星光电技术有限公司 | Liquid crystal display device and backlight module thereof |
| CN104167153A (en) * | 2014-06-27 | 2014-11-26 | 京东方科技集团股份有限公司 | Displaying panel locating piece and displaying device |
| TWI485485B (en) * | 2012-12-04 | 2015-05-21 | Radiant Opto Electronics Suzhou Co Ltd | Backlight module and display module |
| CN108020949A (en) * | 2017-12-29 | 2018-05-11 | 重庆市中光电显示技术有限公司 | Antistatic buffers glue frame |
| CN108227312A (en) * | 2018-01-19 | 2018-06-29 | 京东方科技集团股份有限公司 | A kind of glue frame and display device |
| CN113759603A (en) * | 2021-09-08 | 2021-12-07 | 京东方科技集团股份有限公司 | Backlight module and display device |
-
2008
- 2008-06-06 CN CNA2008101111203A patent/CN101598869A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101943809A (en) * | 2010-09-04 | 2011-01-12 | 福建华映显示科技有限公司 | Display module |
| CN102901003A (en) * | 2011-07-25 | 2013-01-30 | 精工爱普生株式会社 | Lighting unit, liquid crystal display, and electronic apparatus |
| WO2013053152A1 (en) * | 2011-10-12 | 2013-04-18 | 深圳市华星光电技术有限公司 | Backlight module and liquid crystal display device |
| US8525949B2 (en) | 2011-10-12 | 2013-09-03 | Shenzhen China Star Optoelectronics Technology Co., Ltd. | Back light module and liquid crystal display device |
| CN103256521A (en) * | 2012-02-21 | 2013-08-21 | 扬升照明股份有限公司 | Light source module and backlight module |
| WO2014012239A1 (en) * | 2012-07-17 | 2014-01-23 | 深圳市华星光电技术有限公司 | Liquid crystal display device and backlight module thereof |
| TWI485485B (en) * | 2012-12-04 | 2015-05-21 | Radiant Opto Electronics Suzhou Co Ltd | Backlight module and display module |
| CN104167153A (en) * | 2014-06-27 | 2014-11-26 | 京东方科技集团股份有限公司 | Displaying panel locating piece and displaying device |
| US9377809B2 (en) | 2014-06-27 | 2016-06-28 | Boe Technology Group Co., Ltd. | Display panel positioning member and display apparatus |
| CN108020949A (en) * | 2017-12-29 | 2018-05-11 | 重庆市中光电显示技术有限公司 | Antistatic buffers glue frame |
| CN108227312A (en) * | 2018-01-19 | 2018-06-29 | 京东方科技集团股份有限公司 | A kind of glue frame and display device |
| CN113759603A (en) * | 2021-09-08 | 2021-12-07 | 京东方科技集团股份有限公司 | Backlight module and display device |
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Application publication date: 20091209 |