CN101162317A - LCD device and back light module unit thereof - Google Patents
LCD device and back light module unit thereof Download PDFInfo
- Publication number
- CN101162317A CN101162317A CNA2006100631023A CN200610063102A CN101162317A CN 101162317 A CN101162317 A CN 101162317A CN A2006100631023 A CNA2006100631023 A CN A2006100631023A CN 200610063102 A CN200610063102 A CN 200610063102A CN 101162317 A CN101162317 A CN 101162317A
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- light
- pointolite
- module backlight
- guide plate
- elastic component
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Abstract
The invention provides a backlight module and a liquid crystal display device adopting the backlight module. The backlight module comprises a light guide plate which comprises a light output surface and a light input surface connected with the light output surface, a framework which holds the light guide plate, and at least one point source which comprises a luminous surface and an elastic member departing from the luminous surface. The point source is arranged between the framework and the light guide plate, and the elastic member abuts against the framework and produces elastic deformation force which ensures close contact between the luminous surface and the light input surface. The backlight module and liquid crystal display device provided by the invention is of high luminance and even light.
Description
Technical field
The invention relates to a kind of module backlight and adopt the liquid crystal indicator of this module backlight.
Background technology
Liquid crystal indicator because of have low diathermaneity, characteristics such as volume is compact and power consumption is low, and ripe and innovation along with correlation technique, kind is various day by day, be widely used in mobile phone, personal digital assistant, portable digital video disk player (Digital Video Disc, DVD), field such as mobile computer, personal computer and TV.Yet, because display panels itself is not had a characteristics of luminescence, so must cooperate certain light source just can reach display effect.
Current thin film transistor (Thin Film Transistor, TFT) light source of module employing backlight mainly contains pointolite and line source two classes, as adopt pointolite, when being assembled to module backlight, the spacing of light source luminescent face and light guide plate incidence surface influences the emitting brightness and the homogeneity of this module backlight.
Seeing also Fig. 1, is a kind of liquid crystal indicator structural representation of prior art.This liquid crystal indicator 1 comprises a display panels 11 and one and the module backlight 10 of these display panels 11 stacked settings.This module 10 backlight comprises a flexible circuit board, and (FlexiblePrinted Circuit Board, FPC) 110, one light guide plate 120, is accommodated the framework 130 of this light guide plate 120, and is arranged at a plurality of pointolites 140 on this flexible circuit board 110.This light guide plate 120 comprises an exiting surface 121 and at least one incidence surface 122 that links to each other with this exiting surface 121.
This flexible circuit board 110 is connected with this display panels 11, and this flexible circuit board 110 comprises a conductor strip 111 and a light source setting area 112, the cantilever that this light source setting area 112 extends out for this conductor strip 111.These a plurality of pointolites 140 are arranged at the light source setting area 112 of this flexible circuit board 110.
Seeing also Fig. 2, is pointolite structural representation shown in Figure 1.This pointolite 140 is light emitting diode (Light Emitting Diode, LED), it comprises a luminophor (figure does not show), one accommodates the glue frame 141 of this luminophor, this luminophor comprises a light-emitting area 142, it is positioned at a side of this glue frame 141, and this glue frame 141 deviates from these light-emitting area 142 1 sides and comprises two supporting constructions 1411 and 1412 arranged side by side.
When this framework 130 is assembled with this pointolite 140, this flexible circuit board 110 and light guide plate 120, this light guide plate 120 is immobilizated in this framework 130, this flexible circuit board 110 is arranged on this framework 130, and make these a plurality of pointolites 140 between these light guide plate 120 incidence surfaces 122 and this framework 130 inboards, the light-emitting area 142 of this pointolite 140 is relative with the incidence surface 122 of this light guide plate 120, and the size of this pointolite 140 is not more than the incidence surface 122 of this light guide plate 120 and the gap size of these framework 130 inboards.
Seeing also Fig. 3, is the light-emitting area 142 and the distance of the incidence surface 122 of this light guide plate 120 and the graph of a relation of these module 10 relative brightnesses backlight of this pointolite 140.The transverse axis D of this coordinate axis represents the spacing of this light-emitting area 142 and this incidence surface 122, and its unit is mm, and longitudinal axis Y represents the relative brightness of this module 10 backlight, and its unit is cd/m2.As seen, this light-emitting area 142 is more little with the spacing of this incidence surface 122 among the figure, and then the relative brightness of this module 10 backlight is high more, and promptly the utilization ratio of optical energy of this pointolite 140 is high more; In like manner, this light-emitting area 142 is away from this incidence surface 122, and then the relative brightness of this module 10 backlight will descend, and promptly the light utilization efficiency of this pointolite 140 reduces.
Owing at present this pointolite 140 is passed through surface adhering technology (Surface MountTechnology, when SMT) being assembled to this flexible printed wiring board 110, the location processing procedure tolerance of SMT can cause and have the maximum spacing that can reach 0.4mm between the light-emitting area 142 of this luminophor and the light guide plate incidence surface 122, and every bit light source 140 and this incidence surface 122 corresponding, spacing neither be on all four, this has just influenced the brightness and the homogeneity of module 10 backlight, thereby influences the brightness and the homogeneity of liquid crystal indicator 1.
Summary of the invention
In order to solve the low and relatively poor problem of light-emitting uniformity of module brightness backlight in the prior art, provide a kind of module backlight that improves brightness and improve light-emitting uniformity.
Also provide a kind of employing can improve brightness and improve the liquid crystal indicator of the module backlight of light-emitting uniformity.
A kind of module backlight, it comprises: a light guide plate, this light guide plate comprise an exiting surface and an incidence surface that links to each other with this exiting surface; One accommodates the framework of this light guide plate; At least one pointolite, this pointolite comprises the elastic component that a light-emitting area and deviates from mutually with this light-emitting area, this pointolite is arranged between this framework and this light guide plate, this this framework of elastic component butt, and the elastic deformation power of its generation makes this light-emitting area closely contact with this incidence surface.
A kind of liquid crystal indicator, it comprises a display panels and a module backlight of stacked setting.This module backlight comprises: a light guide plate, this light guide plate comprise an exiting surface and an incidence surface that links to each other with this exiting surface; One accommodates the framework of this light guide plate; At least one pointolite, this pointolite comprises the elastic component that a light-emitting area and deviates from mutually with this light-emitting area, this pointolite is arranged between this framework and this light guide plate, this this framework of elastic component butt, and the elastic deformation power of its generation makes this light-emitting area closely contact with this incidence surface.
Compared with prior art, because the light utilization efficiency of module backlight is influenced by the spacing of point light source light-emitting face and light guide plate incidence surface, so pointolite provided by the invention is provided with elastic component, in assembling module process backlight and after the assembling, this elastic component provides elastic deformation power that the incidence surface of pointolite to light guide plate pushed away closely, effectively to utilize the energy of light source, improve module backlight and adopt the emitting brightness of the liquid crystal indicator of this module backlight, and improve its light-emitting uniformity.
Description of drawings
Fig. 1 is a kind of structural representation of prior art liquid crystal indicator.
Fig. 2 is the pointolite structural representation of liquid crystal indicator shown in Figure 1.
Fig. 3 is that the influence of distance and the module relative brightness backlight of the exiting surface of pointolite shown in Figure 1 and light guide plate incidence surface concerns synoptic diagram.
Fig. 4 is the structural representation of liquid crystal indicator first embodiment of the present invention.
Fig. 5 is the pointolite structural representation of liquid crystal indicator shown in Figure 4.
Fig. 6 is the module assembling synoptic diagram backlight of liquid crystal indicator shown in Figure 4.
Fig. 7 is a VII enlarged diagram partly among Fig. 6.
Fig. 8 is the pointolite structural representation of liquid crystal indicator second embodiment shown in Figure 4.
Fig. 9 is the pointolite structural representation with spring-like elastic component.
Embodiment
Seeing also Fig. 4, is the structural representation of liquid crystal indicator first embodiment of the present invention.This liquid crystal indicator 2 comprises a display panels 21 and one and a module 20 backlight of these display panels 21 stacked settings, and this module 20 backlight provides planar light for this display panels 21.
This module 20 backlight comprise brightening piece 210 on, once brightening piece 220, a diffusion sheet 230, a light guide plate 240, a flexible circuit board (Flexible Printed Circuit Board, FPC) 250, a plurality of pointolites 260, of being arranged at this flexible circuit board 250 accommodate the framework 270 and a reflector plate 280 of this light guide plate 240.
This light guide plate 240 comprises at least one incidence surface 241, an exiting surface that links to each other with this incidence surface 241 242, one and these exiting surface 242 opposed bottom surface 243.This flexible circuit board 250 comprises a conductor strip 251 and a light source setting area 252, the cantilever that this light source setting area 252 extends out for this conductor strip 251, and these a plurality of pointolites 260 are arranged at the light source setting area 252 of this flexible circuit board 250.This framework 270 is the glue frame normally, and it comprises that four sidewalls 271 and that link to each other can make the breach 272 that the conductor strip 251 of this flexible circuit board 250 is stretched out, this four sidewall 271 link to each other successively and surround a receiving space.
Seeing also Fig. 5, is pointolite structural representation shown in Figure 4.This pointolite 260 is light emitting diode (Light Emitting Diode, LED), it comprises a luminophor (figure does not show), one accommodates the glue frame 261 of this luminophor, this luminophor comprises a light-emitting area 262, it is positioned at a side of this glue frame 261, and the light that this luminophor produces is by this light-emitting area 262 emissions, and this glue frame 261 deviates from these light-emitting area 262 1 sides and comprises one first supporting construction 2611 and one and one second supporting construction 2612 that is set up in parallel of this first supporting construction 2611.This pointolite 260 further comprises an elastic component 263, this elastic component 263 is between this first supporting construction 2611 and this second supporting construction 2612, it is one to the arc spring lamination structure of protruding away from this glue frame 261 directions, its two ends respectively cross-over connection on this first supporting construction 2611 and this second supporting construction 2612.This elastic component 263 is that metal or polymeric material are made.
See also Fig. 6 and Fig. 7, Fig. 6 is the assembling synoptic diagram of this module 20 backlight, and Fig. 7 is the VII enlarged diagram partly of Fig. 6.This light guide plate 240 is immobilizated in the receiving space of this framework 270, this flexible circuit board 250 is arranged on this framework 270, make a plurality of pointolites 260 that are arranged at light source setting area 252 be positioned on the sidewall 271 of these light guide plate 240 incidence surfaces 241 and this framework 270, and the light-emitting area 262 of this pointolite 260 is relative with the incidence surface 241 of this light guide plate 240, the sidewall 271 of this framework 270 of elastic component 263 butts of this pointolite 260, the conductor strip 251 of this flexible circuit board 250 is stretched out this framework 270 by the breach 272 of this framework 270.
Please consult Fig. 4 again, this module 20 backlight is when assembling, also need on above-mentioned package assembly, further reflector plate 280 to be arranged at bottom surface 243 1 sides of this light guide plate 240, diffusion sheet 230, following brightening piece 220 are reached go up exiting surface 242 1 sides that brightening piece 210 is set in turn in this light guide plate 240 in addition.
Because elastic component 263 is under undeformed situation still, the size of this pointolite 260 is slightly larger than the spacing of the sidewall 271 of these light guide plate 240 incidence surfaces 241 and this framework 270, so when assembling this flexible circuit board 250 and pointolite 260, above the space between the incidence surface 241 that needs earlier this flexible circuit board 250 to be arranged at this light guide plate 240 and the sidewall 271 of this framework 270.Wherein, the conductor strip 251 of this flexible circuit board 250 is stretched out this framework 270, a sidewall 271 of this framework 270 of elastic component 263 butts of this pointolite 260 by scarce 272 of this framework 270.Glue frame 261 with this pointolite 260 of hand makes these pointolite 260 integral body move to these sidewall 271 directions again, so that this pointolite 260 is put between the sidewall 271 of the incidence surface 241 of this light guide plate 240 and this framework 270 fully.The elastic deformation power that this elastic component 263 produces makes this light-emitting area 262 closely contact with this incidence surface 241.
Compared with prior art, because the elastic deformation power of this elastic component 263 can promote this pointolite 260 and be close to the incidence surface 241 of this light guide plate 240, the light-emitting area 262 of this pointolite 260 closely contacts with this incidence surface 241, thereby promoted the light utilization efficiency of this pointolite 260, improved module 20 backlight and adopted the emitting brightness of the liquid crystal indicator 2 of this module 20 backlight.Simultaneously, owing to the distance between the incidence surface 241 of the light-emitting area 262 that has effectively reduced every bit light source 260 and this light guide plate 240, thereby also reduced the incidence surface 262 of each pointolite 260 and the disparity range of the distance between this incidence surface 241, improved this module 20 backlight and adopted the light-emitting uniformity of the liquid crystal indicator 2 of this module 20 backlight.
Seeing also Fig. 8, is the structural representation of pointolite second embodiment of the present invention.The pointolite 360 of this embodiment has similar structure to the pointolite 260 of first embodiment, its difference is: this pointolite 360 comprises one first elastic component 3631 and one second elastic component 3632, this first supporting construction 3611 that is arranged at this first elastic component 3631 deviates from these light-emitting area 362 1 sides, this second supporting construction 3612 that is arranged at this second elastic component 3632 deviates from these light-emitting area 362 1 sides, this first elastic component 3631 and this second elastic component 3632 all are arc spring lamination structures of protruding to away from these pointolite 360 directions, and its material all is metal or polymkeric substance.
Elastic component of the present invention removes above-mentioned embodiment, and the rubber-like structure of other arbitrary shape also is as the trapezoidal and waveform protruded to the point of distance light source direction, spring-like spirality etc.Wherein, the pointolite structure with spring-like spirality shell fragment is provided with a spring-like spirality elastic component 463 as shown in Figure 9 between first supporting construction 4611 of this pointolite 460 and second supporting construction 4612.
Elastic component of the present invention can be by stickup, one-body molded, method combinations such as buckle engages, screw combination with the glue frame of pointolite.
Claims (10)
1. module backlight, it comprises a light guide plate, one framework and at least one pointolite, this light guide plate comprises an exiting surface and an incidence surface that links to each other with this exiting surface, and this framework is accommodated this light guide plate, and this pointolite comprises and being arranged between this light guide plate and this framework, it comprises a light-emitting area, it is characterized in that: this pointolite also comprises an elastic component that deviates from mutually with this light-emitting area, this this framework of elastic component butt, and the elastic deformation power of its generation makes this light-emitting area closely contact with this incidence surface.
2. module backlight as claimed in claim 1 is characterized in that: this pointolite is in the spacing of the size of free state greater than incidence surface and this framework of this light guide plate.
3. module backlight as claimed in claim 1 is characterized in that: wherein this pointolite is a light emitting diode.
4. module backlight as claimed in claim 1 is characterized in that: this elastic component can be one to the arc spring lamination structure of protruding away from this pointolite direction, to the trapezoidal elastic piece structure, a spiral spring structure or the waveform elastic piece structure that protrude away from this pointolite direction.
5. module backlight as claimed in claim 1 is characterized in that: the elastic component of this pointolite is that metal or polymeric material are made.
6. module backlight as claimed in claim 1 is characterized in that: this pointolite further comprises a luminophor and a glue frame, and this glue frame is accommodated this luminophor, and this light-emitting area and this elastic component are arranged at the two side faces that this glue frame deviates from mutually respectively.
7. module backlight as claimed in claim 1 is characterized in that: the glue frame of this pointolite deviates from this light-emitting area one side and comprises one first supporting construction and one second supporting construction that is oppositely arranged with this first supporting construction.
8. module backlight as claimed in claim 1 is characterized in that: between this first supporting construction and this second supporting construction elastic component is set.
9. module backlight as claimed in claim 1 is characterized in that: this light-emitting area one side that deviates from of this first supporting construction and this second supporting construction is provided with one first elastic component and one second elastic component respectively.
10. liquid crystal indicator, it comprises a liquid crystal panel and a module backlight of stacked setting, this module backlight is characterized in that for this liquid crystal panel provides planar light: this module backlight is the described module backlight of arbitrary claim in the aforesaid right requirement 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100631023A CN101162317A (en) | 2006-10-13 | 2006-10-13 | LCD device and back light module unit thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100631023A CN101162317A (en) | 2006-10-13 | 2006-10-13 | LCD device and back light module unit thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101162317A true CN101162317A (en) | 2008-04-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006100631023A Pending CN101162317A (en) | 2006-10-13 | 2006-10-13 | LCD device and back light module unit thereof |
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| Country | Link |
|---|---|
| CN (1) | CN101162317A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101818874A (en) * | 2010-03-29 | 2010-09-01 | 友达光电股份有限公司 | Liquid crystal display device 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 |
| CN103883942A (en) * | 2014-03-14 | 2014-06-25 | 京东方科技集团股份有限公司 | Backlight module and LCD device |
| CN108059207A (en) * | 2017-12-15 | 2018-05-22 | 清华大学 | A kind of UV-LED reactors |
| CN108287389A (en) * | 2018-02-24 | 2018-07-17 | 京东方科技集团股份有限公司 | Backlight module and display device |
| CN112596146A (en) * | 2020-07-01 | 2021-04-02 | 福建合信创展科技有限公司 | Perovskite quantum dot-based light guide plate and application method thereof |
-
2006
- 2006-10-13 CN CNA2006100631023A patent/CN101162317A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101818874A (en) * | 2010-03-29 | 2010-09-01 | 友达光电股份有限公司 | Liquid crystal display device and backlight module thereof |
| CN101818874B (en) * | 2010-03-29 | 2011-06-29 | 友达光电股份有限公司 | Liquid crystal display device 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 |
| CN103883942A (en) * | 2014-03-14 | 2014-06-25 | 京东方科技集团股份有限公司 | Backlight module and LCD device |
| CN108059207A (en) * | 2017-12-15 | 2018-05-22 | 清华大学 | A kind of UV-LED reactors |
| CN108287389A (en) * | 2018-02-24 | 2018-07-17 | 京东方科技集团股份有限公司 | Backlight module and display device |
| CN112596146A (en) * | 2020-07-01 | 2021-04-02 | 福建合信创展科技有限公司 | Perovskite quantum dot-based light guide plate and application method thereof |
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