CN101852375B - Back light module and liquid crystal display device thereof - Google Patents
Back light module and liquid crystal display device thereof Download PDFInfo
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- CN101852375B CN101852375B CN2010102051353A CN201010205135A CN101852375B CN 101852375 B CN101852375 B CN 101852375B CN 2010102051353 A CN2010102051353 A CN 2010102051353A CN 201010205135 A CN201010205135 A CN 201010205135A CN 101852375 B CN101852375 B CN 101852375B
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- light
- guide plate
- light guide
- backlight module
- liquid crystal
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 34
- 230000004308 accommodation Effects 0.000 claims abstract description 13
- 238000004020 luminiscence type Methods 0.000 claims description 40
- 238000009413 insulation Methods 0.000 claims description 14
- 238000009792 diffusion process Methods 0.000 claims description 8
- 230000003287 optical effect Effects 0.000 claims description 7
- 238000010586 diagram Methods 0.000 description 12
- 230000000694 effects Effects 0.000 description 7
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
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Abstract
The invention relates to a back light module and a liquid crystal display device thereof. The back light module comprises a plurality of light guide plates, a plurality of light emitting components and a reflection sheet, wherein each light guide plate is provided with an opposite light entering part and a matching part, the adjacent light entering part and the matching part are mutually combined to form a matching light guide plate, and an accommodation space is formed at the joint part of the light entering part and the matching part; the light emitting components are arranged in the accommodation space and are positioned at the side of the light entering part; and the reflection sheet is arranged below the matching light guide plate. The liquid crystal display device comprises the back light module and a liquid crystal panel, and the liquid crystal panel is arranged at one side of the light back module. The invention has the advantages of improving the ray utilization rate and providing more uniform area sources.
Description
Technical field
The present invention relates to a kind of liquid crystal indicator, relate in particular to the backlight modular structure in this liquid crystal indicator.
Background technology
In recent years, because liquid crystal indicator has obtained application widely with characteristics such as light, thin, little and power consumption are low on electron image products such as mobile computer, digital camera, TV.
Generally speaking, liquid crystal indicator is made of liquid crystal panel and backlight module.Liquid crystal panel changes the throughput of light in different picture elements zone, and causes light and shade difference in different picture elements zone, to reach the purpose of show image by the rotation of liquid crystal molecule and the effect of Polarizer.
Because liquid crystal itself does not have the characteristics of luminescence, provide area source so need to rely on backlight module.Backlight module can roughly be divided into: lateral incident type backlight module and direct type backlight module, wherein, direct type backlight module needs long light mixing distance to reach the effect of even mixed light, so the thickness of direct type backlight module is thicker, is unsuitable for the making of thin-type display device; The light emitting diode and the lateral incident type backlight module can be arranged in pairs or groups has the advantage of thinner thickness.
Along with liquid crystal indicator waits trend development towards large scale and high contrast gradually, following backlight module is suggested, that is, sliceable a plurality of undersized light guide plate of this backlight module and obtain large-area splicing light guide plate, and, but the mode of also mating area regulation and control backlight (Local Dimming) realizes the display effect of the high dynamic contrast of liquid crystal indicator.
Yet,,, display quality will be worsened so splicing place between each undersized light guide plate is easy to generate bright line because the briliancy that each undersized light guide plate had is not quite similar.
Summary of the invention
The technical issues that need to address of the present invention have provided a kind of backlight module, are intended to solve the above problems;
The present invention also provides the liquid crystal indicator that adopts above-mentioned backlight module.
In order to solve the problems of the technologies described above, the present invention is achieved by the following technical solutions:
Backlight module of the present invention comprises: most light guide plate; Each light guide plate have relatively to a light in part and a stitching section, this light in part adjacent one another are and this stitching section are bonded to each other and form one and splice light guide plate, form an accommodation space in the junction of this light in part and this stitching section; A most luminescence component are arranged in this accommodation space and are positioned at the side of this light in part; Also comprise: a reflector plate; Described reflector plate is arranged at the below of this splicing light guide plate, and wherein, this light in part and this stitching section form this accommodation space of accommodating described luminescence component with step therein.
Liquid crystal indicator of the present invention comprises: above-mentioned backlight module; An and liquid crystal panel; Described liquid crystal panel is arranged on a side of this backlight module.
Compared with prior art, the invention has the beneficial effects as follows: not only can improve the light service efficiency, and more uniform surface light source can be provided.
Description of drawings
Fig. 1 is the schematic perspective view of a kind of backlight module of the embodiment of the invention.
Fig. 2 is the enlarged diagram of the regional A of Fig. 1.
Fig. 3 is the schematic side view of the backlight module of Fig. 1.
Fig. 4 is the enlarged diagram of the regional A of Fig. 3.
Fig. 5 is the schematic perspective view of a kind of light guide plate of the embodiment of the invention.
Fig. 6 is the enlarged diagram of the regional A of Fig. 5.
Fig. 7 is the enlarged diagram of the area B of Fig. 5.
Fig. 8 is the enlarged diagram of the zone C of Fig. 5.
Fig. 9 is the synoptic diagram of a kind of liquid crystal indicator of the embodiment of the invention.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is described in further detail:
The invention provides a kind of backlight module and can solve the bright line problem of splicing light guide plate, and uniform surface light source can be provided in splicing place.
The invention provides a kind of liquid crystal indicator, have above-mentioned backlight module, and the image with good display quality can be provided.
The present invention proposes a kind of backlight module, comprising: most light guide plate, most individual luminescence component and reflector plates.Each light guide plate have relatively to light in part and stitching section, light in part adjacent one another are and stitching section are bonded to each other and form the splicing light guide plate, at the junction of light in part and stitching section formation accommodation space.Luminescence component is arranged in the accommodation space and is positioned at the side of light in part.Reflector plate is arranged on the below of splicing light guide plate.
In one embodiment of this invention, above-mentioned backlight module more comprises circuit board, is arranged at the below of reflector plate, and luminescence component is electrically connected at circuit board, and reflector plate is between circuit board and splicing light guide plate.
In one embodiment of this invention, above-mentioned reflector plate has the hole corresponding to luminescence component, makes luminescence component can pass this hole.
In one embodiment of this invention, above-mentioned backlight module more comprises: insulation course, be arranged at the below of circuit board, and circuit board is between reflector plate and insulation course.
In one embodiment of this invention, above-mentioned backlight module more comprises: back of the body frame, insulation course, circuit board, reflector plate, luminescence component and splicing light guide plate are contained in the back of the body frame.
In one embodiment of this invention, above-mentioned backlight module more comprises optical diffusion film, is arranged on the one side towards luminescence component of the stitching section of each light guide plate.
In one embodiment of this invention, each above-mentioned light guide plate has most bar grooves, and light guide plate is divided into a plurality of light-emitting zones.
In one embodiment of this invention, the side of the light in part of each above-mentioned light guide plate is provided with a microstructure.
In one embodiment of this invention, the side of above-mentioned stitching section in each light guide plate has a lug.
The present invention proposes a kind of liquid crystal indicator again, comprising: above-mentioned backlight module and liquid crystal panel.This liquid crystal panel is arranged on a side of backlight module.
The present invention adopts a plurality of light guide plate to be combined into a splicing light guide plate, and below this splicing light guide plate reflector plate is set, and makes the light whole upwards reflection of sheet that can be reflected, and also can improve the light service efficiency to eliminate bright line problem of the prior art.In addition, the one side towards luminescence component in the stitching section of each light guide plate also is provided with optical diffusion film, and further homogenising is directly by the make progress light of outgoing of luminescence component, so that more uniform surface light source to be provided.
Fig. 1 is the schematic perspective view of a kind of backlight module of the embodiment of the invention.Fig. 2 is the enlarged diagram of the regional A of Fig. 1.Fig. 3 is the schematic side view of the backlight module of Fig. 1.Fig. 4 is the enlarged diagram of the regional A of Fig. 3.
Please be simultaneously with reference to Fig. 1~Fig. 4, this backlight module 100 comprises at least: most light guide plate 110A~110D, most individual luminescence component 120 and reflector plates 130.Each light guide plate 110A~110D have relatively to light in part 112 and stitching section 114, light in part 112 adjacent one another are is bonded to each other with stitching section 114 and forms a splicing light guide plate 140, forms accommodation space CS in the junction of light in part 112 and stitching section 114.Luminescence component 120 is arranged among the accommodation space CS and is positioned at the side of light in part 112.Reflector plate 130 is arranged on the below of splicing light guide plate 140.
Certainly, present embodiment is to form splicing light guide plate 140 as an example in conjunction with four light guide plate 110A~110D, in other embodiments, can need splice the light guide plate of right quantity voluntarily, not limit the light guide plate of utilizing how much quantity herein and form splicing light guide plate 140 according to design.
The light that luminescence component 120 sent (not illustrating) can be directly enters among light guide plate 110A~110D via light in part 112 and conducts.Particularly, make the reflector plate 130 of whole piece be arranged on below by the splicing light guide plate 140 that a plurality of light guide plate 110A~110D was spliced, thus, not only can be easy to assemble reflector plate 130, also can make conduction in each light guide plate 110A~110D and the light reflection integrally of outgoing downwards, to obtain uniform surface light source toward above.
In addition, please refer to Fig. 4, backlight module 100 can more comprise optical diffusion film 150, is arranged on the one side towards luminescence component 120 of the stitching section 114 of each light guide plate 110A~110D.Optical diffusion film 150 can make directly by luminescence component 120 upwards the light of outgoing produce diffusion, and the area source that backlight module 100 is provided is more even.
Referring again to Fig. 1~Fig. 4, backlight module 100 can more comprise circuit board 160, is arranged on the below of reflector plate 130, and luminescence component 120 is electrically connected at circuit board 160, and reflector plate 130 is between circuit board 160 and splicing light guide plate 140.Via the control circuit on the circuit board 160 (not illustrating), can carry out regional regulation and control backlight (Local Dimming) for luminescence component 120, make all or part of light guide plate 110A~110D import light, and, can provide luminescence component 120 to carry out luminous required electric power via circuit board 160.Luminescence component 120 can be light emitting diode (LED), organic electric exciting light-emitting diode (OLED) or pointolite with similar principles.
As shown in Figure 2, reflector plate 130 can have the hole H corresponding to luminescence component 120, makes luminescence component 120 can pass hole H.This hole H can be the hole of a strip, makes all luminescence components 120 pass reflector plate 130, and perhaps, this hole H also can be most holes, and each hole H makes luminescence component 120 pass reflector plate 130 separately corresponding to each luminescence component 120.
Referring again to Fig. 1~Fig. 4, backlight module 100 can more comprise: insulation course 170, be arranged on the below of circuit board 160, and circuit board 160 is between reflector plate 130 and insulation course 170.Insulation course 170 can make between circuit board 160 and the extraneous conductive component (not illustrating) and produce the electric insulation effect, avoids extraneous conductive component to produce the damages that discharge effect caused for circuit board 160 and luminescence component 120.
In addition, as shown in Figure 3, backlight module 100 also can comprise: back of the body frame 180, insulation course 170, circuit board 160, reflector plate 130, luminescence component 120 and splicing light guide plate 140 are placed in the back of the body frame 180.Because general back of the body frame 180 is that metal is made, this moment, insulation course 170 can be brought into play above-mentioned electric insulation effect.
Fig. 5 is the schematic perspective view of a kind of light guide plate of the embodiment of the invention.Fig. 6 is the enlarged diagram of the regional A of Fig. 5.Fig. 7 is the enlarged diagram of the area B of Fig. 5.Fig. 8 is the enlarged diagram of the zone C of Fig. 5.
This sentences single light guide plate 110A and describes as an example, and the concrete structure of light guide plate 110B~110D is identical with light guide plate 110A.Please be simultaneously with reference to Fig. 5~Fig. 8, light guide plate 110A have relatively to light in part 112 and stitching section 114, light in part 112 adjacent one another are can be bonded to each other with stitching section 114 and form splicing light guide plate 140.Light in part 112 forms cooperatively interact stepped with stitching section 114.
Can be simultaneously with reference to Fig. 4, the thickness of light in part 112 is also thicker than the thickness of stitching section 114, forms the accommodation space CS that accommodates luminescence component 120 with step therein.In conjunction with after the upper surface of light in part 112 and the upper surface of stitching section 114 come down to be in same surface level; In conjunction with after the lower surface of light in part 112 and the lower surface of stitching section 114 come down to be in same surface level, thus, can make the reflector plate 130 that is positioned at splicing light guide plate 140 (as shown in Figure 1) below smooth in splicing light guide plate 140.
As Fig. 5 and shown in Figure 6, light guide plate 110A can have most bar groove S, and light guide plate 110A is divided into a plurality of light-emitting zone R.Groove S can make the light of different light-emitting zone R be isolated from each other, and can form each district's while or not luminous simultaneously effect.Groove S makes when can utilize light guide plate 110A ejection formation, or utilizes groover (not illustrating) to make.
As Fig. 5 and shown in Figure 7, the side of the light in part 112 of light guide plate 110A can be provided with a microstructure MS.This microstructure MS can be a plurality of minute grooves.Utilize microstructure MS, can impel the light that comes from the luminescence component 120 that is arranged on light in part 112 sides to enter among the light guide plate 110A, to improve the light utilization ratio.
As Fig. 5 and shown in Figure 8, the side of the stitching section 114 of light guide plate 110A can have a lug P.The coupling unit (not illustrating) that this lug P could be used for and carry on the back frame 180 couples, so that light guide plate 110A can stably be fixed in the back of the body frame 180.
Fig. 9 is the synoptic diagram of a kind of liquid crystal indicator of the embodiment of the invention.This liquid crystal indicator 200 can comprise: above-mentioned backlight module 100 and liquid crystal panel 210.This liquid crystal panel 210 is arranged at a side of backlight module 100.Because this liquid crystal indicator 200 has above-mentioned backlight module 100, and the image of good quality can be provided.Particularly, above-mentioned backlight module 100 uses splicing light guide plate 140, so be particularly suitable for making large-sized LCD TV.
In sum, backlight module of the present invention and liquid crystal indicator have the following advantages at least:
Adopt a plurality of light guide plate to be spliced into a splicing light guide plate, and a reflector plate is set below this splicing light guide plate, thus, can make even reflection ray, and eliminate the bright line problem and can improve the light service efficiency.In addition, the one side towards luminescence component in the stitching section of light guide plate is provided with optical diffusion film, and the upwards light of outgoing of luminescence component is spread, and can further improve the bright problem of mistake that the splicing light guide plate causes because of luminescence component in splicing place.Therefore, this backlight module is not only assembled easily and uniform surface light source can be provided.
Though the present invention discloses as above with embodiment; right its is not in order to limiting the present invention, has common knowledge under any in the technical field, without departing from the spirit and scope of the invention; when doing a little change and retouching, so the present invention's protection domain is as the criterion with appending claims.
Claims (10)
1. a backlight module comprises: most light guide plate; It is characterized in that: each light guide plate have relatively to a light in part and a stitching section, this light in part adjacent one another are and this stitching section are bonded to each other and form one and splice light guide plate, form an accommodation space in the junction of this light in part and this stitching section; A plurality of luminescence components are arranged in this accommodation space and are positioned at the side of this light in part; Also comprise: a reflector plate; Described reflector plate is arranged at the below of this splicing light guide plate, and wherein, this light in part and this stitching section form this accommodation space of accommodating described luminescence component with step therein.
2. backlight module according to claim 1 is characterized in that: also comprise a circuit board; Described circuit board is arranged on the below of this reflector plate, and those luminescence components are electrically connected at this circuit board, and this reflector plate is between this circuit board and this splicing light guide plate.
3. backlight module according to claim 2 is characterized in that: this reflector plate has the hole corresponding to those luminescence components, and those luminescence components can pass this hole.
4. backlight module according to claim 2 is characterized in that: also comprise: an insulation course; Described insulation course is arranged on the below of this circuit board, and this circuit board is between this reflector plate and this insulation course.
5. backlight module according to claim 4 is characterized in that: also comprise: a back of the body frame; This insulation course, this circuit board, this reflector plate, those luminescence components and this splicing light guide plate are placed in this back of the body frame.
6. backlight module according to claim 1 is characterized in that: also comprise an optical diffusion film; Described optical diffusion film is arranged on the one side towards those luminescence components of this stitching section of each light guide plate.
7. backlight module according to claim 1 is characterized in that: each light guide plate has most bar grooves, and this light guide plate is divided into a plurality of light-emitting zones.
8. backlight module according to claim 1 is characterized in that: the side of this light in part of each light guide plate is provided with a microstructure.
9. backlight module according to claim 1 is characterized in that: the side in this stitching section of each light guide plate has a lug.
10. a liquid crystal indicator is characterized in that: comprising: just like 1 to the 9th each described backlight module of claim the; An and liquid crystal panel; Described liquid crystal panel is arranged on a side of this backlight module.
Priority Applications (1)
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CN2010102051353A CN101852375B (en) | 2010-06-18 | 2010-06-18 | Back light module and liquid crystal display device thereof |
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CN2010102051353A CN101852375B (en) | 2010-06-18 | 2010-06-18 | Back light module and liquid crystal display device thereof |
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CN101852375A CN101852375A (en) | 2010-10-06 |
CN101852375B true CN101852375B (en) | 2011-09-07 |
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CN2010102051353A Expired - Fee Related CN101852375B (en) | 2010-06-18 | 2010-06-18 | Back light module and liquid crystal display device thereof |
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Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
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CN102081187A (en) * | 2010-11-30 | 2011-06-01 | 深圳市华星光电技术有限公司 | Spliced type light guide plate structure and backlight module |
DE102011017720A1 (en) * | 2011-04-28 | 2012-10-31 | Ledon Oled Lighting Gmbh & Co. Kg | Lighting device with OLEDs or QLEDs |
TW201321861A (en) * | 2011-11-30 | 2013-06-01 | Au Optronics Corp | Light guide plate structure and backlight module using the same |
TWI563324B (en) * | 2014-09-11 | 2016-12-21 | Au Optronics Corp | Backlight module with partially overlapped film design |
CN105676530A (en) * | 2016-03-08 | 2016-06-15 | 武汉华星光电技术有限公司 | Backlight structure of liquid crystal displayer and liquid crystal displayer |
CN106647030A (en) * | 2016-12-27 | 2017-05-10 | 深圳市华星光电技术有限公司 | Backlight module and liquid crystal displayer |
CN108761910A (en) | 2018-05-28 | 2018-11-06 | 京东方科技集团股份有限公司 | Electronic equipment, display device, backlight module and its light source |
CN110942726A (en) * | 2018-09-21 | 2020-03-31 | 深圳光峰科技股份有限公司 | LED display screen |
CN111736389A (en) * | 2020-06-24 | 2020-10-02 | 安徽康佳电子有限公司 | Light-controllable side-entering backlight capable of being partitioned |
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CN1677186A (en) * | 2004-03-31 | 2005-10-05 | 广辉电子股份有限公司 | Buffering design back-light module group |
CN201170472Y (en) * | 2008-03-14 | 2008-12-24 | 上海广电光电子有限公司 | Directly-down backlight module unit |
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CN101737725A (en) * | 2008-11-20 | 2010-06-16 | 中强光电股份有限公司 | Backlight module and liquid crystal display |
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JPS60216329A (en) * | 1984-04-12 | 1985-10-29 | Canon Inc | Liquid crystal display device |
JPH09282921A (en) * | 1996-04-10 | 1997-10-31 | Canon Inc | Back light device and liquid crystal display device provided with this back light device |
JP4540061B2 (en) * | 2005-07-20 | 2010-09-08 | 株式会社エンプラス | Lighting device, surface light source device, and lighting unit |
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2010
- 2010-06-18 CN CN2010102051353A patent/CN101852375B/en not_active Expired - Fee Related
Patent Citations (4)
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CN1677186A (en) * | 2004-03-31 | 2005-10-05 | 广辉电子股份有限公司 | Buffering design back-light module group |
CN201170472Y (en) * | 2008-03-14 | 2008-12-24 | 上海广电光电子有限公司 | Directly-down backlight module unit |
CN101737725A (en) * | 2008-11-20 | 2010-06-16 | 中强光电股份有限公司 | Backlight module and liquid crystal display |
CN201382341Y (en) * | 2009-04-08 | 2010-01-13 | 深圳帝光电子有限公司 | Video-control dynamic LED (light-emitting diode) backlight component |
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Effective date of registration: 20180904 Address after: 215151 No. 468 Songshan Road, Suzhou New District, Suzhou, Jiangsu. Patentee after: Suzhou Maoli Optoelectronics Technology Co.,Ltd. Address before: 215151 Songshan Road, Suzhou New District, Jiangsu 470 Patentee before: SUZHOU XIANGLONG PLASTIC Co.,Ltd. |
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