CN203745771U - Backlight module and liquid crystal display device - Google Patents
Backlight module and liquid crystal display device Download PDFInfo
- Publication number
- CN203745771U CN203745771U CN201420143832.4U CN201420143832U CN203745771U CN 203745771 U CN203745771 U CN 203745771U CN 201420143832 U CN201420143832 U CN 201420143832U CN 203745771 U CN203745771 U CN 203745771U
- Authority
- CN
- China
- Prior art keywords
- backlight module
- guide plate
- light guide
- liquid crystal
- lamp source
- 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.)
- Expired - Lifetime
Links
- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 39
- 239000003292 glue Substances 0.000 claims description 25
- 230000003287 optical effect Effects 0.000 claims description 13
- 239000000758 substrate Substances 0.000 claims description 12
- 239000012528 membrane Substances 0.000 claims description 6
- 238000009792 diffusion process Methods 0.000 claims description 3
- 241000131894 Lampyris noctiluca Species 0.000 abstract 1
- 230000007547 defect Effects 0.000 abstract 1
- 239000002390 adhesive tape Substances 0.000 description 9
- BQENMISTWGTJIJ-UHFFFAOYSA-N 2,3,3',4,5-pentachlorobiphenyl Chemical compound ClC1=CC=CC(C=2C(=C(Cl)C(Cl)=C(Cl)C=2)Cl)=C1 BQENMISTWGTJIJ-UHFFFAOYSA-N 0.000 description 7
- 241000254158 Lampyridae Species 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000000605 extraction Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- VXXBCDUYUQKWCK-UHFFFAOYSA-N 1,2,3,4,5-pentachloro-6-(3,4,5-trichlorophenyl)benzene Chemical compound ClC1=C(Cl)C(Cl)=CC(C=2C(=C(Cl)C(Cl)=C(Cl)C=2Cl)Cl)=C1 VXXBCDUYUQKWCK-UHFFFAOYSA-N 0.000 description 2
- DOSMHBDKKKMIEF-UHFFFAOYSA-N 2-[3-(diethylamino)-6-diethylazaniumylidenexanthen-9-yl]-5-[3-[3-[4-(1-methylindol-3-yl)-2,5-dioxopyrrol-3-yl]indol-1-yl]propylsulfamoyl]benzenesulfonate Chemical compound C1=CC(=[N+](CC)CC)C=C2OC3=CC(N(CC)CC)=CC=C3C(C=3C(=CC(=CC=3)S(=O)(=O)NCCCN3C4=CC=CC=C4C(C=4C(NC(=O)C=4C=4C5=CC=CC=C5N(C)C=4)=O)=C3)S([O-])(=O)=O)=C21 DOSMHBDKKKMIEF-UHFFFAOYSA-N 0.000 description 2
- 230000001795 light effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 102100040014 GH3 domain-containing protein Human genes 0.000 description 1
- 101000886770 Homo sapiens GH3 domain-containing protein Proteins 0.000 description 1
- 101001074528 Homo sapiens Regulating synaptic membrane exocytosis protein 1 Proteins 0.000 description 1
- 102100036240 Regulating synaptic membrane exocytosis protein 1 Human genes 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Landscapes
- Liquid Crystal (AREA)
- Planar Illumination Modules (AREA)
Abstract
The utility model provides a backlight module and a liquid crystal display device. The backlight module comprises a light guide plate, a rubber frame arranged on the periphery of the light guide plate, a lamp-source flexible printed circuit board and shading tape. The lamp-source flexible printed circuit board is fixed on the light guide plate and the rubber frame through the shading tape. The liquid crystal display device comprises the backlight module and a liquid crystal display screen located on the backlight module. The backlight module and the liquid crystal display device have the advantage that on the premise that the backlight module and the liquid crystal display device are thinned, emergence brightness and emergence uniformity of the backlight module can be effectively improved. In addition, the liquid crystal display device can avoid 'glowworm' defects effectively, so that reliability and yield of the liquid crystal display device are improved.
Description
Technical field
The utility model relates to display technique field, particularly a kind of backlight module and liquid crystal indicator.
Background technology
At present, liquid crystal indicator has been widely used in various electronic products as the display unit of electronic equipment, backlight module is a vitals in liquid crystal indicator, in real work, find that liquid crystal indicator exists bad display and the larger problem of liquid crystal indicator thickness.
Utility model content
In view of this, the utility model provides a kind of backlight module, comprise: a light guide plate, be arranged at described light guide plate glue frame, lamp source flexible PCB and shading rubber belt around, described lamp source flexible PCB is fixed on described light guide plate and glue frame by described shading rubber belt.
Accordingly, the utility model also provides a kind of liquid crystal indicator, and described liquid crystal indicator comprises:
Described backlight module; And
Be positioned at the LCDs on described backlight module.
The utlity model has one of following beneficial effect:
Backlight module of the present utility model comprises: a light guide plate, be arranged at described light guide plate glue frame, lamp source flexible PCB and shading rubber belt around, described lamp source flexible PCB is fixed on described light guide plate and glue frame by described shading rubber belt.In above-mentioned backlight module, lamp source flexible PCB is fixed on described light guide plate and glue frame by described shading rubber belt, and omit the double faced adhesive tape of lamp bar, thereby make the thickness attenuation of backlight module, therefore need not do too much attenuate to light guide plate, thereby the emitting brightness and the light-emitting uniformity that have ensured whole backlight module, improved display effect.The thickness of the liquid crystal indicator in like manner, being made up of above-mentioned backlight module is attenuation accordingly also.
In addition, described lamp source flexible PCB is fixed on described light guide plate and glue frame by described shading rubber belt.Visible, between described lamp source flexible PCB and LCDs, there is not adhesive tape, therefore, even because vibration LCDs and lamp source flexible PCB come in contact, also described lamp source flexible PCB can not taken up, avoid " firefly " bad generation, thereby improved reliability and the yield of liquid crystal indicator.
Brief description of the drawings
Fig. 1 is the structural representation of liquid crystal indicator of the prior art;
Fig. 2 is the structural representation of the backlight module of the utility model one embodiment;
Fig. 3 is the structural representation of the liquid crystal indicator of the utility model one embodiment.
Embodiment
Below in conjunction with the drawings and specific embodiments, the backlight module the utility model proposes and liquid crystal indicator are described in further detail.According to the following describes and claims, advantage of the present utility model and feature will be clearer.It should be noted that, accompanying drawing all adopts very the form of simplifying and all uses non-ratio accurately, only in order to convenient, the object of aid illustration the utility model embodiment lucidly.
Researchist finds, as shown in Figure 1, existing liquid crystal indicator comprises backlight module and LCDs, described backlight module comprises: backboard 101, be arranged at the glue frame 102 on described backboard 101, be arranged at the reflector 103 on described backboard 101, be arranged at the light guide plate 104 on described reflector 103, be arranged at the lamp source 105 of described light guide plate 104 1 sides, the lamp source flexible PCB 106 being connected with described lamp source 105, for providing power supply to described lamp source 105, be arranged at the blooming piece 107 in described light guide plate 104, described blooming piece 107 comprises from the bottom to top successively: diffusion sheet 1071, lower prismatic lens 1072 and upper prismatic lens 1073.Wherein, described lamp source flexible PCB 106 is fixed in described glue frame 102 and light guide plate 104 by lamp bar double faced adhesive tape 108.
Continue with reference to figure 1, color membrane substrates 202 that described LCDs comprises TFT substrate 201, be oppositely arranged with described TFT substrate 201, be arranged at the lower Polarizer 203 on described TFT substrate 201, the substrate flexible PCB 205 that is arranged at the upper Polarizer 204 on described color membrane substrates 202 and is connected with described TFT substrate 201.Described LCDs is positioned on described backlight module, and is fixed on described backlight module by shading double sticky tape 109.In flexible PCB 106 regions, described lamp source, described shading double sticky tape 109 sticks on described lamp source flexible PCB 106, described lamp source flexible PCB 106 extends to the direction away from backlight module, and is connected with described substrate flexible PCB 205.
For above-mentioned liquid crystal indicator, the thickness of whole liquid crystal indicator is all specified by client, and along with the progressively slimming of liquid crystal indicator, the thickness of each assembly of composition liquid crystal indicator also requires more and more thinner.For backlight module, the thickness H of above-mentioned backlight module represents with formula (1):
H=H
bez+H
ref+H
LGP+H
DST+H
LFPC+H
RIM (1)
Wherein, H
bezfor the thickness of backboard 101; H
reffor the thickness of reflector 103; H
lGPfor the thickness of light guide plate 104; H
dSTfor the thickness of lamp bar double faced adhesive tape 108; H
lFPCfor the thickness of lamp source flexible PCB 106; H
rIMfor the thickness of shading double sticky tape 109.
In order to cater to the demand of slimming, each assembly in above-mentioned backlight module has all done maximum attenuate.Thickness as the light guide plate of backlight module critical piece is also greatly limited, but, the thickness of light guide plate directly affects the optical processing effect of backlight module, the thickness of light guide plate is thicker, the effect of its optical processing is better, after the thickness attenuation of light guide plate, understand because of optical processing poor effect, and affect the emitting brightness of whole backlight module and go out uniformity of light.
In addition, above-mentioned liquid crystal indicator, in the time carrying out failtests, for example vibration experiment or drop test, described LCDs can, in vibration processes, touch with described shading double sticky tape 109, and described shading double sticky tape 109 is sticked up, then described lamp source flexible PCB 106 is taken up, thereby cause occurring light leakage phenomena near a side in lamp source, usually said " firefly " is bad.
Therefore, be necessary to develop a kind of backlight module, to solve that light guide plate is too thin and the light extraction efficiency that causes low and the poor problem of light-emitting uniformity, the while can be improved again the reliability of the liquid crystal indicator being made up of this backlight module.
Researchist further finds, a kind of backlight module is provided, comprise: a light guide plate, be arranged at described light guide plate glue frame, lamp source flexible PCB and shading rubber belt around, described lamp source flexible PCB is fixed on described light guide plate and glue frame by described shading rubber belt, so, can solve the low and poor problem of light-emitting uniformity of the light extraction efficiency that causes because light guide plate is too thin in prior art, go out the object of light effect thereby realization improves backlight module.In addition, can also solve liquid crystal indicator because LCDs takes up lamp source flexible PCB and cause " firefly " bad problem, to improve reliability and the yield of liquid crystal indicator.
Concrete, as shown in Figure 2, the backlight module 300 of the utility model one embodiment comprises: backboard 301, glue frame 302, reflector 303, light guide plate 304, optical diaphragm group 305, lamp source flexible PCB 306, lamp source 307 and shading rubber belt 308.Wherein, described glue frame 302 is arranged on the neighboring area of described backboard 301, shown in reflector 303 be arranged on described backboard 301, described light guide plate 304 is arranged on described reflector 303, and described glue frame 302 is positioned at described light guide plate 304 around.Described light guide plate 304 comprises that section is the Part I 3041 of wedge shape and the Part II 3042 that section is rectangle.Described optical diaphragm group 305 is arranged on the Part II 3042 of described light guide plate 304, and described optical diaphragm group 305 comprises the diffusion sheet 3051, lower bright enhancement film 3052 and the upper bright enhancement film 3053 that are set in turn in described light guide plate 304.
Continue with reference to figure 2, described lamp source flexible PCB 306 is connected with described lamp source 307, described lamp source flexible PCB 306 is fixed on described light guide plate 304 and glue frame 302 by described shading rubber belt 308, and described shading rubber belt 308 extends in described optical diaphragm group 305.On described shading rubber belt 308, have opening 3081, described lamp source 307 is through described opening 3081, is positioned over a side of described light guide plate 304 and between described light guide plate 304 and described glue frame 302.
Continue with reference to figure 2, in described backlight module 300, lamp source flexible PCB 306 is fixed on described light guide plate 304 and glue frame 302 by described shading rubber belt 308.Visible, the thickness H of backlight module 300
1can represent with following formula (2):
H
1=H
bez1+H
ref1+H
LGP1+H
LFPC1+H
RIM1 (2)
Wherein, H
bez1for the thickness of backboard 301; H
ref1for the thickness of reflector 303; H
lGP1for the thickness of light guide plate 304; H
lFPC1for the thickness of lamp source flexible PCB 306; H
rIM1for the thickness of shading double sticky tape 308.
Contrast equation (2) and formula (1), can find out, with respect to the thickness H of backlight module of the prior art for, the thickness H of backlight module 300
1remove the thickness H of lamp bar double faced adhesive tape
dST, therefore need not do too much attenuate to light guide plate 304, just can realize the attenuate to whole backlight module 300, thereby ensure emitting brightness and the light-emitting uniformity of whole backlight module.
In addition, the liquid crystal indicator being made up of above-mentioned backlight module 300 also belongs to protection domain of the present utility model.Particularly, liquid crystal indicator 400 as shown in Figure 3 comprises backlight module 300 and is positioned at the LCDs 500 on described backlight module 300.Described LCDs 500 is fixed in described glue frame 302 and described optical diaphragm group 305 by described shading rubber belt 308.
Continue with reference to figure 3, color membrane substrates 502 that described LCDs 500 comprises array base palte 501, be oppositely arranged with described array base palte 501, be arranged at the lower Polarizer 503 on described array base palte 501, the main flexible PCB 505 that is arranged at the upper Polarizer 504 on described color membrane substrates 502 and is connected with described array base palte 501.Wherein, described lamp source flexible PCB 306 is connected with described main flexible PCB 505.
As mentioned above, the natural attenuation because having omitted lamp bar double faced adhesive tape of the thickness of backlight module 300, because backlight module 300 attenuation, the thickness of the liquid crystal indicator 400 being made up of backlight module 300 also can corresponding attenuation.
In addition, in liquid crystal indicator 400, described shading rubber belt 308 is fixed on described LCDs 500 in described glue frame 302 and described optical diaphragm group 305, and described lamp source flexible PCB 306 is fixed on described light guide plate 304 and glue frame 302 by described shading rubber belt 308.Visible, between described lamp source flexible PCB 306 and LCDs 500, there is not adhesive tape, even because vibration LCDs 500 comes in contact with lamp source flexible PCB 306, described lamp source flexible PCB 306 also can not be taken up, fundamentally avoid " firefly " bad generation, thereby improved reliability and the yield of liquid crystal indicator.
In sum, in backlight module of the present utility model, make backlight module nature attenuate because having omitted lamp bar double faced adhesive tape, therefore do not need light guide plate to do too much attenuate, avoid the low and poor problem of light-emitting uniformity of light guide plate light extraction efficiency, thereby realize the object of improving backlight module and go out light effect, improved display effect.
In addition, because omitted lamp bar double faced adhesive tape, and shading rubber belt is arranged between lamp source flexible PCB and glue frame to the risk of avoiding lamp source flexible PCB to be taken up, fundamentally avoid " firefly " bad generation, thereby improved reliability and the yield of liquid crystal indicator.
Foregoing description is only the description to the utility model preferred embodiment; the not any restriction to the utility model scope; any change, modification that the those of ordinary skill in the utility model field does according to above-mentioned disclosure, all belong to the protection domain of claims.
Claims (10)
1. a backlight module, comprising: a light guide plate, be arranged at described light guide plate glue frame, lamp source flexible PCB and shading rubber belt around, described lamp source flexible PCB is fixed on described light guide plate and glue frame by described shading rubber belt.
2. backlight module as claimed in claim 1, is characterized in that, also comprises a lamp source, and described lamp source flexible PCB is connected with described lamp source.
3. backlight module as claimed in claim 2, is characterized in that, on described shading rubber belt, has opening, and described lamp source is through described opening, is positioned over a side of described light guide plate and between described light guide plate and described glue frame.
4. backlight module as claimed in claim 1, is characterized in that, described light guide plate comprises that section is the Part I of wedge shape and the Part II that section is rectangle.
5. backlight module as claimed in claim 4, is characterized in that, also comprises the optical diaphragm group on the Part II that is arranged at described light guide plate, and described shading rubber belt extends in described optical diaphragm group.
6. backlight module as claimed in claim 5, is characterized in that, described optical diaphragm group comprises the diffusion sheet being set in turn in described light guide plate, lower bright enhancement film and upper bright enhancement film.
7. backlight module as claimed in claim 1, is characterized in that, also comprises:
One backboard, described glue frame is arranged on the neighboring area of described backboard; And
Be arranged at the reflector on described backboard, described light guide plate is arranged on described reflector.
8. a liquid crystal indicator, comprising:
Backlight module as claimed in any of claims 1 to 7 in one of claims; And
Be positioned at the LCDs on described backlight module.
9. liquid crystal indicator as claimed in claim 8, is characterized in that, described LCDs comprises:
Array base palte;
The color membrane substrates being oppositely arranged with described array base palte;
Be arranged at the lower Polarizer on described array base palte;
Be arranged at the upper Polarizer on described color membrane substrates; And
The main flexible PCB being connected with described array base palte.
10. liquid crystal indicator as claimed in claim 9, is characterized in that, described shading rubber belt is fixed on described LCDs in described glue frame and described optical diaphragm group.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201420143832.4U CN203745771U (en) | 2013-05-24 | 2014-03-27 | Backlight module and liquid crystal display device |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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CN201320293235.5 | 2013-05-24 | ||
CN201320293235 | 2013-05-24 | ||
CN201420143832.4U CN203745771U (en) | 2013-05-24 | 2014-03-27 | Backlight module and liquid crystal display device |
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Publication Number | Publication Date |
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CN203745771U true CN203745771U (en) | 2014-07-30 |
Family
ID=51345551
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CN201420143832.4U Expired - Lifetime CN203745771U (en) | 2013-05-24 | 2014-03-27 | Backlight module and liquid crystal display device |
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Cited By (17)
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CN104375324A (en) * | 2014-11-17 | 2015-02-25 | 深圳市华星光电技术有限公司 | Backlight module and display with the same |
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CN105044981A (en) * | 2015-08-10 | 2015-11-11 | 武汉华星光电技术有限公司 | Backlight module and liquid crystal display device |
CN105090892A (en) * | 2015-07-22 | 2015-11-25 | 武汉华星光电技术有限公司 | Light guide element and backlight module |
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WO2016161663A1 (en) * | 2015-04-09 | 2016-10-13 | 武汉华星光电技术有限公司 | Display device and backlight modulethereof |
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CN114442362A (en) * | 2021-07-06 | 2022-05-06 | 荣耀终端有限公司 | Display module and electronic device |
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2014
- 2014-03-27 CN CN201420143832.4U patent/CN203745771U/en not_active Expired - Lifetime
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CN104375324A (en) * | 2014-11-17 | 2015-02-25 | 深圳市华星光电技术有限公司 | Backlight module and display with the same |
WO2016101370A1 (en) * | 2014-12-24 | 2016-06-30 | 深圳市华星光电技术有限公司 | Backlight module and display |
US10267974B2 (en) | 2015-01-04 | 2019-04-23 | Boe Technology Group Co., Ltd. | Light guide plate, backlight and display device |
WO2016107090A1 (en) * | 2015-01-04 | 2016-07-07 | 京东方科技集团股份有限公司 | Light guide plate, backlight source and display device |
US9733421B2 (en) | 2015-04-09 | 2017-08-15 | Wuhan China Star Optoelectronics Technology Co., Ltd. | Display device and backlight module thereof |
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CN105090892A (en) * | 2015-07-22 | 2015-11-25 | 武汉华星光电技术有限公司 | Light guide element and backlight module |
CN105093676A (en) * | 2015-08-06 | 2015-11-25 | 武汉华星光电技术有限公司 | Backlight module for liquid crystal display |
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CN105044981B (en) * | 2015-08-10 | 2018-03-02 | 武汉华星光电技术有限公司 | A kind of backlight module and liquid crystal display device |
CN105044981A (en) * | 2015-08-10 | 2015-11-11 | 武汉华星光电技术有限公司 | Backlight module and liquid crystal display device |
CN105650542A (en) * | 2016-01-04 | 2016-06-08 | 京东方光科技有限公司 | Backlight module and display device |
CN105650542B (en) * | 2016-01-04 | 2019-03-01 | 京东方光科技有限公司 | Backlight module and display device |
CN105759498A (en) * | 2016-03-01 | 2016-07-13 | 京东方科技集团股份有限公司 | Display device |
CN105759498B (en) * | 2016-03-01 | 2020-03-31 | 京东方科技集团股份有限公司 | Display device |
WO2017190371A1 (en) * | 2016-05-03 | 2017-11-09 | 武汉华星光电技术有限公司 | Backlight module and assembly method therefor |
CN105759503A (en) * | 2016-05-03 | 2016-07-13 | 武汉华星光电技术有限公司 | Backlight module and assembling method thereof |
CN107450232A (en) * | 2017-08-18 | 2017-12-08 | 深圳市德仓科技有限公司 | A kind of backlight module and its visual color ameliorative way |
CN110095900A (en) * | 2018-01-31 | 2019-08-06 | 广东欧珀移动通信有限公司 | A kind of backlight module and electronic device |
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CN110850634A (en) * | 2019-11-05 | 2020-02-28 | 武汉华星光电技术有限公司 | Backlight module and liquid crystal display panel |
CN111273487A (en) * | 2020-03-26 | 2020-06-12 | 武汉华星光电技术有限公司 | Backlight module and display device |
CN114442362A (en) * | 2021-07-06 | 2022-05-06 | 荣耀终端有限公司 | Display module and electronic device |
CN114442362B (en) * | 2021-07-06 | 2023-10-20 | 荣耀终端有限公司 | Display assembly and electronic equipment |
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Granted publication date: 20140730 |
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