CN101165563A - Backlight module group and liquid crystal display - Google Patents
Backlight module group and liquid crystal display Download PDFInfo
- Publication number
- CN101165563A CN101165563A CNA2006100632223A CN200610063222A CN101165563A CN 101165563 A CN101165563 A CN 101165563A CN A2006100632223 A CNA2006100632223 A CN A2006100632223A CN 200610063222 A CN200610063222 A CN 200610063222A CN 101165563 A CN101165563 A CN 101165563A
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- Prior art keywords
- guide plate
- light guide
- module backlight
- light source
- projection
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Abstract
The backlight module comprises a light guiding plate and at least one light source. Said light guiding plate comprises a light emergence face, and bottom face opposite to the light emergence face, and an light incidence face adjacent the light emergence face; said light source comprises a lamp tube and a reflection bowl; the light emergence face of the light guiding plate forms a bulge at the extension of the one side of the light incidence face; said bulge and the incidence face forms a holding space of holding the light source. The invention also provides a LCD display using said backlight module.
Description
Technical field
The invention relates to the LCD of a kind of module backlight and this module backlight of employing.
Background technology
LCD is a kind of non-self-emission display apparatus, its show main by liquid crystal molecule control external beam by or obstructed coming realize, therefore, corresponding backlight module or preceding optical mode group need be set, realize Presentation Function.
Please refer to Fig. 1, it is the schematic perspective view of a kind of prior art module backlight.This module 1 backlight comprises that a light guide plate 11, a light source 13 and are placed on the optical diaphragm group 15 on this light guide plate 11.This light guide plate 11 comprises an exiting surface 111, one and this exiting surface 111 opposed bottom surface 113 and an incidence surface 115.This light source 13 is arranged on incidence surface 115 sides of this light guide plate 11, two light source holders 135 that it comprises a fluorescent tube 131, a reflex housing 133 and is positioned at fluorescent tube 131 two ends.
Please in the lump with reference to figure 2, it is the structural representation of module backlight 1 shown in Figure 1.Two parallel surfaces of this reflex housing 133 are clamped in the exiting surface 111 of light guide plate 11 and the edge of bottom surface 113, and light source holder 135 offsets with the incidence surface 115 of light guide plate 11.The light that fluorescent tube 131 sends, a part directly enter light guide plate 11 by this incidence surface 115, and another part then enters this light guide plate 11 through these reflex housing 133 reflection backs from this incidence surface 115.
When carrying out shock-testing, because the reflex housing 133 of light source 13 is clamped in light guide plate 11 both sides, only cushion the impulsive force of light guide plate 11 between light guide plate 11 and the light source 13 by light source holder 135, so the unsettled phenomenon of fixing takes place easily fluorescent tube 131 is impacted, thereby the bad phenomenon of fracture takes place; Moreover because light source 13 is clipping design with light guide plate 11, it is not tight that the miniature deformation of reflex housing 133 or assembling contraposition are forbidden all to cause light source 13 and light guide plate 11 to be agreed with, thereby produce bad phenomenon such as light leak, bright line; In addition, need to place optical diaphragm group 15 such as diffusion sheet on the light guide plate 11, after light source 13 was lighted, temperature can continue to rise near the whole light source 13, and optical diaphragm group 15 too closely is subjected to temperatures involved because of distance light source 13, easily causes bad phenomenon such as optical diaphragm group 15 bendings or distortion.
Summary of the invention
Fluorescent tube is easily broken in order to overcome in the prior art, light source is with light guide plate is agreed with bad and the yielding problem of optical diaphragm group, is necessary to provide that a kind of fluorescent tube fixing is stable, light source and light guide plate agree with well and the on-deformable module backlight of optical diaphragm group.
Also be necessary to provide a kind of LCD that adopts this module backlight.
A kind of module backlight, it comprises a light guide plate and at least one light source, this light guide plate comprises an exiting surface, one and this exiting surface opposed bottom surface and at least one incidence surface adjacent with this exiting surface, this light source comprises a fluorescent tube and a reflex housing, the exiting surface of this light guide plate extends to form at least one projection in this incidence surface one side, and this projection and corresponding incidence surface form a receiving space of accommodating this light source.
A kind of LCD, this LCD comprise a display panel and a module backlight of stacked setting.This module backlight comprises a light guide plate and at least one light source, and this light guide plate comprises an exiting surface, one and this exiting surface opposed bottom surface and at least one incidence surface adjacent with this exiting surface, and this light source comprises a fluorescent tube and a reflex housing.The exiting surface of this light guide plate extends to form at least one projection in this incidence surface one side, and this projection and corresponding incidence surface form a receiving space of accommodating this light source.
Compared to prior art, the projection and the incidence surface of the light guide plate of the present invention's module backlight and LCD form a receiving space, in order to accommodate this light source.Because the reflex housing of this light source and light source holder can cushion the pressure from light guide plate jointly, effectively protect fluorescent tube, when this module backlight is subjected to impacting, make fluorescent tube be difficult for broken bad phenomenon takes place, reach the purpose of stablizing fixing; Moreover light source is placed under the projection, agrees with well with light guide plate, can effectively reduce bad phenomenon such as light leak, bright line; In addition, have a projection between light source and this optical diaphragm group, the heat that light source sends is difficult for conduction and gives optical diaphragm group, and it is too high and cause unfavorable condition crooked and distortion effectively to reduce optical diaphragm group Yin Wendu.
Description of drawings
Fig. 1 is the schematic perspective view of a kind of prior art module backlight.
Fig. 2 is the structural representation of module backlight shown in Figure 1.
Fig. 3 is the schematic perspective view of the present invention's module first embodiment backlight.
Fig. 4 is the structural representation of module backlight shown in Figure 3.
Fig. 5 is the enlarged drawing of regional V among Fig. 4.
Fig. 6 is the structural representation of the present invention's module second embodiment backlight.
Fig. 7 is the structural representation of the present invention's module the 3rd embodiment backlight.
Fig. 8 is the enlarged drawing of regional VIII among Fig. 7.
Fig. 9 is the structural representation of the present invention's module the 4th embodiment backlight.
Figure 10 is the synoptic diagram of LCD of the present invention.
Embodiment
Please refer to Fig. 3, it is the schematic perspective view of the present invention's module first embodiment backlight.This module 2 backlight comprises that a light guide plate 21, a light source 23 and are placed on the optical diaphragm group 25 on this light guide plate 21.
Please in the lump with reference to figure 4, it is the structural representation of module backlight 2 shown in Figure 3.This light guide plate 21 comprises an exiting surface 211, one and these exiting surface 211 opposed bottom surface 213 and an incidence surface 215 adjacent with this exiting surface 211.The exiting surface 211 of this light guide plate 21 extends a projection 217 in these incidence surface 215 sides.This projection 217 can or mill the mode of washing by plastic rubber shaping and make.This projection 217 comprises a lower surface 2171, and this lower surface 2171 intersects with the incidence surface 215 of this light guide plate 21, constitutes a receiving space (not indicating), and this light source 23 is placed in this receiving space.This light source 23 comprises a fluorescent tube 231, a reflex housing 233 and is positioned at two light source holders 235 at fluorescent tube 231 two ends that this reflex housing 233 is the U-shaped structure, coats three sides of fluorescent tube 231.
Please refer to Fig. 5, it is the enlarged diagram of V shown in Figure 4 portion.This U-shaped reflex housing 233 comprises a first side wall 2331 that be arranged in parallel, second sidewall 2332 that one the 3rd sidewall 2333 and vertically is connected this first side wall 2331 and the 3rd sidewall 2333.This first side wall 2331 overlaps mutually with the lower surface 2171 of this projection 217 and contacts, and the 3rd sidewall 2333 extends under these light guide plate 21 bottom surfaces 213, and overlaps with this 213 edges, bottom surface and contact.This light source holder 235 connects with the incidence surface 215 of this light guide plate 21.
When assembling this module 2 backlight, earlier this light source 23 is placed on the precalculated position; Place this light guide plate 21 again, the projection 217 of this light guide plate 21 is placed on this light source 23, in the receiving space that the lower surface 2171 that this light source 23 is housed in this projection 217 and this incidence surface 215 form, and the first side wall 2331 that makes this reflex housing 233 overlaps with the lower surface 2171 of this projection and contacts, the 3rd sidewall 2333 overlaps with bottom surface 213 parts of this light guide plate 21 and contacts, this light source holder 235 and these light guide plate 21 incidence surfaces 215 butts; Place this optical diaphragm group 25 then on the exiting surface 211 of this light guide plate 21.The light that this fluorescent tube 231 sends, a part directly enter light guide plate 21 by this incidence surface 215, and another part then enters this light guide plate 21 through these reflex housing 233 reflection backs from this incidence surface 215.Optics matrix group 25 is used for improving the emitting brightness and the uniformity coefficient of module 2 backlight.
When LCD is carried out shock-testing, because this reflex housing 233 and light source holder 235 can cushion the impulsive force from external worlds such as light guide plate 21 simultaneously, with effective protection fluorescent tube 231, avoid fluorescent tube 231 to be impacted and broken bad phenomenon takes place, reach the purpose of stablizing fixing; Moreover, because the first side wall 2331 of this reflex housing 233 overlaps with the lower surface of this projection 217 2171 and contacts, the 3rd sidewall 2333 overlaps with the bottom surface 213 of this light guide plate 21 and contacts, and this light source 23 is agreed with well with this light guide plate 21, can effectively reduce unfavorable conditions such as light leak, bright line and take place; In addition, has a projection 217 between this light source 23 and the optical diaphragm group 25, this projection 217 can stop that the heat that this light source 23 sends spreads to this optical diaphragm group 25, avoid this optical diaphragm group 25 to cause unfavorable conditions such as bending or distortion because of temperature is too high, thus the assembleability and the operation that improve this module 2 backlight.
Please refer to Fig. 6, it is the structural representation of the present invention's module second embodiment backlight.This module 3 backlight is with module backlight 2 differences of first embodiment: this light guide plate 31 has two relative incidence surfaces 315, the exiting surface 311 of this light guide plate 31 extends to form two projections, 317, two light sources 33 in two incidence surfaces, 315 sides respectively and is housed in respectively in two receiving spaces of this two projection 317 and this two incidence surface 315 formations.
Please refer to Fig. 7, it is the structural representation of the present invention's module the 3rd embodiment backlight.
Please in the lump with reference to figure 8, it is the enlarged diagram of regional VIII shown in Figure 7.This module 4 backlight and first embodiment module 2 differences backlight are: the lower surface 4171 of the projection 417 that this light guide plate 41 forms has a reflection horizon 4172.Make for the retroreflective sheeting of attaching or by modes such as plating in this reflection horizon 4172.The reflex housing 433 of this light source 43 is L shaped structure.This reflex housing 433 comprises a vertically disposed the first side wall 4331 and one second sidewall 4333 mutually, this the first side wall 4331 offsets with this reflection horizon 4172, second sidewall 4333 extends under these light guide plate 41 bottom surfaces 413, and overlaps with this 413 edges, bottom surface and contact.This light source holder 435 and these incidence surface 415 and these reflection horizon 4172 butts.
These module 4 assembling process backlight are similar to the assembling process of the module backlight 2 of first embodiment, at first place this light source 43 at predeterminated position, place this light guide plate 41 again, make in the receiving space that lower surface 4171 that this light source 43 is contained in this projection 417 and this incidence surface 415 form, and the first side wall 4331 of this reflex housing 433 and the reflection horizon 4172 of these projection 417 lower surfaces 4171 are offseted, second sidewall 4333 overlaps with the bottom surface of this light guide plate 41 and contacts, this light source holder 435 connects with the incidence surface 415 and the reflection horizon 4172 of this light guide plate 41, places exiting surface 411 sides of this optical diaphragm group 45 in this light guide plate 41 at last.This optics matrix group 45 is used for improving the emitting brightness and the uniformity coefficient of this module 4 backlight.
This module 4 backlight has adopted the structure of reflection horizon 4172 and L shaped reflex housing 433, under the identical situation of these light source 43 utilization factors, can reach the beneficial effect of first embodiment module 2 backlight equally, further alleviate simultaneously the weight of this module 4 backlight, save the material of this reflex housing 433, help assembling operation and reduce cost.
Please refer to Fig. 9, is the structural representation of the present invention's module the 4th embodiment backlight.This module 5 backlight is with the 3rd embodiment module 4 differences backlight: this light guide plate 51 has two relative incidence surfaces 515, the exiting surface 511 of this light guide plate 51 extends to form two projections 517 in two incidence surfaces, 515 sides respectively, two light sources 53 are housed in respectively in two receiving spaces of this two projection 517 and two incidence surfaces, 515 formations, and the reflex housing 533 of this two light source 53 all adopts L shaped structure.
Please refer to Figure 10, is the synoptic diagram of LCD of the present invention.This LCD 6 comprises a display panel 7 and a module 2 backlight, these display panel 7 parallel exiting surface sides that are placed on this module 2 backlight.This module 2 backlight adopts the described module 2 backlight of first embodiment.
This LCD 6 also can adopt any one of module backlight 3,4,5 of second embodiment of the invention to the four embodiments.
Claims (10)
1. module backlight, it comprises a light guide plate and at least one light source, this light guide plate comprises an exiting surface, one and this exiting surface opposed bottom surface and at least one incidence surface adjacent with this exiting surface, this light source comprises a fluorescent tube and a reflex housing, it is characterized in that: the exiting surface of this light guide plate extends to form at least one projection in this incidence surface one side, and this projection and corresponding incidence surface form a receiving space of accommodating this light source.
2. module backlight as claimed in claim 1 is characterized in that: this projection comprises a lower surface, and this lower surface and this incidence surface intersect.
3. module backlight as claimed in claim 2 is characterized in that: this reflex housing is the U-shaped structure, and this reflex housing comprises a first side wall connected vertically successively, one second sidewall and one the 3rd sidewall.
4. module backlight as claimed in claim 3 is characterized in that: the lower surface of this first side wall and this projection overlaps and contact, and the 3rd sidewall extends to the bottom surface of this light guide plate and with this bottom surface overlapping and contact.
5. module backlight as claimed in claim 2 is characterized in that: this reflex housing is L shaped structure, and this reflex housing comprises a first side wall connected vertically and one second sidewall.
6. module backlight as claimed in claim 5 is characterized in that: following table mask one reflection horizon of this projection.
7. module backlight as claimed in claim 6 is characterized in that: the reflection horizon butt of this first side wall and this projection lower surface, this second sidewall extend to the bottom surface of this light guide plate and overlap with this bottom surface and contact.
8. module backlight as claimed in claim 1 is characterized in that: this light source further comprises two light source holders that are positioned at lamp tube ends and connect with this incidence surface.
9. module backlight as claimed in claim 1, it is characterized in that: this light guide plate has two relative incidence surfaces, the exiting surface of this light guide plate extends to form two projections in this two incidence surfaces side respectively, and two light sources are housed in two of this two projection and the formation of this incidence surface respectively and accommodate in the appearance space.
10. LCD, this LCD comprises a display panel and a module backlight of stacked setting, it is characterized in that: this module backlight is the described module backlight of arbitrary claim in the claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100632223A CN101165563A (en) | 2006-10-20 | 2006-10-20 | Backlight module group and liquid crystal display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100632223A CN101165563A (en) | 2006-10-20 | 2006-10-20 | Backlight module group and liquid crystal display |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101165563A true CN101165563A (en) | 2008-04-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006100632223A Pending CN101165563A (en) | 2006-10-20 | 2006-10-20 | Backlight module group and liquid crystal display |
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| CN (1) | CN101165563A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102494287A (en) * | 2011-12-22 | 2012-06-13 | 南京中电熊猫液晶显示科技有限公司 | Backlight module |
| CN104360541A (en) * | 2014-12-03 | 2015-02-18 | 京东方科技集团股份有限公司 | Light guide plate, backlight module, liquid crystal display module and liquid crystal display device |
| 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 |
| CN107203068A (en) * | 2017-06-06 | 2017-09-26 | 东莞恒扬光电有限公司 | A kind of backlight for being easy to assemble |
| CN114779524A (en) * | 2022-04-02 | 2022-07-22 | Tcl华星光电技术有限公司 | Reflective display panel and display device |
-
2006
- 2006-10-20 CN CNA2006100632223A patent/CN101165563A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102494287A (en) * | 2011-12-22 | 2012-06-13 | 南京中电熊猫液晶显示科技有限公司 | Backlight module |
| CN104360541A (en) * | 2014-12-03 | 2015-02-18 | 京东方科技集团股份有限公司 | Light guide plate, backlight module, liquid crystal display module and liquid crystal display device |
| CN104360541B (en) * | 2014-12-03 | 2017-09-29 | 京东方科技集团股份有限公司 | A kind of light guide plate, backlight module, liquid crystal display module and liquid crystal display device |
| US10067367B2 (en) | 2014-12-03 | 2018-09-04 | Boe Technology Group Co., Ltd. | Light guide plate, backlight module and liquid cristal display device |
| 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 |
| CN107203068A (en) * | 2017-06-06 | 2017-09-26 | 东莞恒扬光电有限公司 | A kind of backlight for being easy to assemble |
| CN114779524A (en) * | 2022-04-02 | 2022-07-22 | Tcl华星光电技术有限公司 | Reflective display panel and display device |
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