CN1313873C - LCD unit and thin type backlight module thereof - Google Patents
LCD unit and thin type backlight module thereof Download PDFInfo
- Publication number
- CN1313873C CN1313873C CNB031475221A CN03147522A CN1313873C CN 1313873 C CN1313873 C CN 1313873C CN B031475221 A CNB031475221 A CN B031475221A CN 03147522 A CN03147522 A CN 03147522A CN 1313873 C CN1313873 C CN 1313873C
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- guide plate
- light guide
- liquid crystal
- framework
- backlight module
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Abstract
The present invention relates to a liquid crystal display unit and a thin type back light module thereof. The liquid crystal display unit comprises a back light module and a liquid crystal panel, wherein the liquid crystal panel is arranged on the back light module; the back light module comprises a frame, a light guide plate and a prismatic lens, the liquid crystal panel is arranged in the frame, the light guide plate is arranged in the frame, a first protrusion part is formed on the light guide plate, and a notch is formed with the aid of the first protrusion part; the prismatic lens is arranged between the liquid crystal panel and the light guide plate and is provided with a second protrusion part. The prismatic lens is positioned on the light guide plate with the aid of placing the second protrusion part into the notch of the light guide plate.
Description
Technical field
The present invention relates to a kind of liquid crystal display and backlight module thereof, particularly relate to a kind of liquid crystal display with thin type backlight module.
Background technology
In the liquid crystal display of general LCD, use backlight module as light source, and in backlight module, often utilize prismatic lens to add that the graphic designs (pattern design) of light guide plate reaches the optical property that will want.
The assembling mode of assembly is direct vertical changing on each blooming, or adheres, repeatedly puts after forming spacer block again with glue in the interval of each assembly shown in 1a figure in the known backlit module.
Specifically, in the framework 11 of known liquid crystal display 10, on from descending reflector plate 12, light guide plate 13, diffusion sheet 14, prismatic lens 15 and liquid crystal panel 16 are set in regular turn, and the flexible PCB 17 that is connected with liquid crystal panel 16 is to extend to reflector plate 12 bottoms in the mode around framework 11 outsides.
Yet known backlight module causes following point easily:
1. the design on the restriction backlight module geometric shape: be subjected to the existing manufacturing technology that reaches of prismatic lens to limit (thickness, light enhancing effect), cause the design of whole backlight module on thickness can't satisfy customer requirement, therefore lose order probably;
2. the prismatic lens locator meams is difficult for: shown in 1b figure, in known backlight module, prismatic lens 15 can grow location wing 151 (only showing in 1b figure) in the left and right sides, so that the usefulness of operator processing and location/fixed prism sheet 15, but this design may because of prismatic lens 15 the z direction (that is, the direction of vertical paper) deformation/rotation, and make the brightness of its same row 3 points (9 amount of brightness are surveyed) cause bigger variation, or cause dark/bright band what is more in light inlet side and bright dipping side;
3. design anti-worker's problem: use the spacer block of double faced adhesive tape, except the anti-worker's problem when good rate is not good, must consider that also the effects such as extinction, scattering of double faced adhesive tape itself cause backlight module optical property instability as inter-module;
4. production reliability: the both sides location wing of the prismatic lens of known design is fixed, how under the asymmetric situation in position, after too high-low temperature round-robin test, easily because thermal stress/residual stress, and when causing backlight module to light, the striated phenomenon on it takes place;
5. backlight module assembleability:, make and want to design very difficulty of automatic/semi-automaticization assembling because there is the existence of location wing both sides;
6. because flexible PCB 17 is provided with a plurality of electronic packages 171, highly higher assembly regular meeting makes the integral thickness of liquid crystal display increase.
Summary of the invention
In order to overcome above-mentioned shortcoming, the object of the present invention is to provide a kind of liquid crystal display, its thickness can be by slimming.
The object of the present invention is to provide a kind of backlight module, this backlight module still can positively be located the optical module in it under the situation of slimming.
According to the present invention, a kind of thin type backlight module is provided, this backlight module comprises: a framework, a light guide plate and a prismatic lens, light guide plate is arranged in the framework, and form one first teat thereon, to form a breach by first teat, prismatic lens has one second teat, wherein second teat is arranged in the breach of light guide plate, so that prismatic lens is positioned on this light guide plate.
In a preferred embodiment, form an inclined-plane, this inclined-plane and prismatic lens adjacency on first teat.
In another preferred embodiment, form a groove on the framework, and form one first flank corresponding on the light guide plate,, light guide plate can be fixed in the framework by first flank being placed groove with groove.
In another preferred embodiment, second teat is on the prism bearing of trend that is formed on the prismatic lens.
In another preferred embodiment, thin type backlight module also comprises a light source, and this light source is arranged in the framework, and with the first teat adjacency of light guide plate.
In addition, light source can be a light emitting diode.
In another preferred embodiment, thin type backlight module also comprises a diffusion sheet, and this diffusion sheet is arranged between prismatic lens and the light guide plate.
In addition, form a groove on the framework, and form one second flank corresponding on the diffusion sheet,, diffusion sheet can be fixed in the framework by second flank being placed groove with groove.
In another preferred embodiment, thin type backlight module also comprises a reflector plate, and it is pasted on the light guide plate, and lays respectively at the not homonymy of light guide plate with prismatic lens system.
In addition, liquid crystal display also comprises a double faced adhesive tape, and it is arranged between light guide plate and the reflector plate, in order to paste reflector plate on light guide plate.
Again in the present invention, a kind of liquid crystal display is provided, this liquid crystal display comprises a backlight module and a liquid crystal panel, wherein liquid crystal panel is arranged on the backlight module, and backlight module comprises: a framework, one light guide plate and a prismatic lens, framework is arranged at wherein in order to the feed flow crystal panel, light guide plate is arranged in the framework, and form one first teat thereon, and forming a breach by forming first teat, prismatic lens is arranged between liquid crystal panel and the light guide plate, and has one second teat, by making second teat be arranged in the breach of light guide plate, prismatic lens is positioned on the light guide plate.
In another preferred embodiment, framework with on the side of light guide plate adjacency is not forming a stage portion.
In addition, liquid crystal display also comprises one, and this flexible PCB is arranged on the liquid crystal panel, and has a plurality of electronic packages thereon, and some of electronic packages are arranged in stage portion.
In addition, liquid crystal display also comprises a bolster, and this bolster is arranged between flexible PCB and the framework, and bolster can be a sponge.
In another preferred embodiment, liquid crystal display also comprises a shading rubber belt, and this shading rubber belt is arranged between prismatic lens and the liquid crystal panel.
Description of drawings
1a figure is the sectional view of known liquid crystal display;
1b figure is the front elevation of known backlit module;
2a figure is the exploded view of the liquid crystal display in the first embodiment of the present invention;
2b figure is the front elevation of the backlight module among the 2a figure;
2c figure is the sectional view after the liquid crystal display of 2a figure makes up;
3a, 3b, 3c figure system be respectively the light guide plate among the 2a figure side-looking, face, front view;
4a figure is the exploded view of the liquid crystal display in the second embodiment of the present invention; And
4b figure is the sectional view of the liquid crystal display combination back of 4a figure.
Accompanying drawing parts symbol description:
10 liquid crystal displays
11 frameworks
12 reflector plates
13 light guide plate
14 diffusion sheets
15 prismatic lenses
151 location wings
16 liquid crystal panels
17 flexible PCBs
171 electronic packages
20 liquid crystal displays
21 backlight modules
211 frameworks
The 211a groove
212 light guide plate
212a first teat
The 212b breach
The 212c inclined-plane
212d first flank
213 diffusion sheets
213a second flank
214 prismatic lenses
214a second teat
215 reflector plates
216 double faced adhesive tapes
217 light sources
22 liquid crystal panels
23 shading rubber belts
24 flexible PCBs
20 ' liquid crystal display
211 ' framework
The 211b stage portion
24 ' flexible PCB
241 electronic packages
25 bolsters
Embodiment
For above and other objects of the present invention, feature and advantage can be become apparent,, and be described with reference to the accompanying drawings as follows below especially exemplified by a preferred embodiment.
First embodiment
2a, 2b, 2c figure system show first embodiment of liquid crystal display of the present invention, in the present embodiment, liquid crystal display 20 comprises a backlight module 21 and a liquid crystal panel 22, wherein liquid crystal panel 22 is to be arranged on the backlight module 21, and backlight module 21 comprises a framework 211, a light guide plate 212, a diffusion sheet 213, digonous eyeglass 214 and a reflector plate 215.
Again, the light source 217 that will be appreciated that backlight module 21 is arranged in the framework 211, and with the first teat 212a adjacency of light guide plate 212, shown in Fig. 2 c, can with the light-emitting area edge designs of light source 217 on the flat horizontal end face of light guide plate 212, can effectively utilize light source 217 whereby; The high system of the z direction of principal axis of the inclined-plane 212c of the first teat 212a of above-mentioned again light guide plate 212 is relevant with the outer form height and the efficient lighting area of light source 217, and the slope of inclined-plane 212c is then relevant with breach 212c size; In addition, light source 217 can be a light emitting diode (LED).
Reflector plate 216 is glued on the side of light guide plate 212 by a double faced adhesive tape 217, that is, reflector plate 216 be with prismatic lens 214 be the not homonymy that lays respectively at light guide plate 212.
In addition, liquid crystal display 20 can be provided with a shading rubber belt 23 usually between prismatic lens 214 and liquid crystal panel 22, shown in 2a figure, and is provided with a flexible PCB 24 in framework 211 outsides, and this flexible PCB 24 is connected with liquid crystal panel 21.
By above-mentioned formation, the liquid crystal display of present embodiment has following advantage:
1. the more backlight module of slimming design can make more light, thinning on the external form of whole liquid crystal display whereby, helps the raising of market share;
2. reduce the location wing design of prismatic lens, not only can reduce whereby (anti-worker expends in mould, the assembling) outside the design cost, more can cause effect to reduce to minimum the known stress that produces because of location wing;
3. utilize the structural design that designs on light guide plate and other assembly, replace the design flow of known glue material and minimizing side location wing, can avoid connecting of the optic harmful effect of glue material backlight module;
4. reduce and the thermal stress when temperature cycling test to concentrate, cause optic variation;
5. save the location wing of prismatic lens side, can be easier to the design automation mounting equipment, to reduce cost.
Second embodiment
4a, 4b figure system shows second embodiment of liquid crystal display of the present invention, and in the present embodiment, liquid crystal display 20 ' comprises a backlight module 21 ', a liquid crystal panel 22 and a flexible PCB 24 '; It should be noted that in the present embodiment the assembly identical with first embodiment is marked with identical symbol, and omit its explanation.
Present embodiment is different with first embodiment to be in that (that is not with a side of light guide plate 212 adjacency) forms a stage portion 211b in its outside in: the framework 211 ' of backlight module 21 ', the flexible PCB 24 that is connected with liquid crystal panel 21 whereby, portions of electronics assembly 241 highly bigger on it can be arranged in stage portion 211b, so that liquid crystal display 20 ' whole slimming.
In addition, liquid crystal display 20 ' also can comprise a bolster 25, this bolster 25 is to be arranged between flexible PCB 24 ' and the framework 211 ', can avoid liquid crystal display 20 ' falling and vibration/shock when test whereby, cause assembly 241 and framework 211 ' to cause squeeze and destroy, and bolster 25 can be a sponge because of external force.
Present embodiment also owing to can make assembly higher on the flexible PCB do the design of flashing into frame facet, can make the liquid crystal display integral body can be by slimming except can obtaining the advantage identical with first embodiment.
Though the present invention with preferred embodiment openly as above; yet it is not in order to limit the present invention; any those skilled in the art; without departing from the spirit and scope of the present invention; certainly can do some and change and retouching, so being as the criterion of should being defined with claims scope of applying for a patent of the present invention's protection domain.
Claims (25)
1. thin type backlight module comprises:
One framework;
One light guide plate, this light guide plate is arranged in this framework, and forms one first teat on this light guide plate, and wherein this light guide plate forms a breach by forming this first teat on this first teat next door; And
One prismatic lens, this prismatic lens have one second teat, and wherein this second teat system is arranged in this breach of this light guide plate, so that this prismatic lens is positioned on this light guide plate.
2. thin type backlight module as claimed in claim 1 is characterized in that: form an inclined-plane, this inclined-plane and this prismatic lens adjacency on this first teat.
3. thin type backlight module as claimed in claim 1, it is characterized in that: form a groove on this framework, and form one first flank corresponding on this light guide plate with this groove, by this first flank being placed this groove, so that this light guide plate is fixed in this framework.
4. thin type backlight module as claimed in claim 1 is characterized in that: this second teat is on the prism bearing of trend that is formed on this prismatic lens.
5. thin type backlight module as claimed in claim 1 is characterized in that also comprising:
One light source, this light source is arranged in this framework, and with the first teat adjacency of this light guide plate.
6. thin type backlight module as claimed in claim 5 is characterized in that: this light source is a light emitting diode.
7. thin type backlight module as claimed in claim 1 is characterized in that also comprising:
One diffusion sheet, this diffusion sheet are arranged between this prismatic lens and this light guide plate.
8. thin type backlight module as claimed in claim 7, it is characterized in that: form a groove on this framework, and form one second flank corresponding on this diffusion sheet with this groove, by this second flank being placed this groove, this diffusion sheet can be fixed in this framework.
9. thin type backlight module as claimed in claim 1 is characterized in that also comprising:
One reflector plate, this reflector plate is pasted on this light guide plate, and lays respectively at the not homonymy of this light guide plate with this prismatic lens system.
10. liquid crystal display as claimed in claim 9 is characterized in that also comprising:
One double faced adhesive tape, this double faced adhesive tape are arranged between this light guide plate and this reflector plate, in order to paste this reflector plate on this light guide plate.
11. a liquid crystal display comprises:
One backlight module; And
One liquid crystal panel, this liquid crystal panel are arranged on this backlight module;
Wherein this backlight module comprises:
One framework, this framework is used for this liquid crystal panel and is arranged at wherein;
One light guide plate, this light guide plate is arranged in this framework, and forms one first teat on this light guide plate, and wherein this light guide plate forms a breach by forming this first teat on this first teat next door; And
One prismatic lens, this prismatic lens are arranged between this liquid crystal panel and this light guide plate, and have one second teat, and wherein this second teat system is arranged in this breach of this light guide plate, so that this prismatic lens is positioned on this light guide plate.
12. liquid crystal display as claimed in claim 11 is characterized in that: this framework with on the side of this light guide plate adjacency is not forming a stage portion.
13. liquid crystal display as claimed in claim 12 is characterized in that also comprising:
One flexible PCB, this flexible PCB is arranged on this liquid crystal panel, and has a plurality of electronic packages thereon, and wherein these electronic package systems of part are arranged in this stage portion.
14. liquid crystal display as claimed in claim 13 is characterized in that also comprising:
One bolster, this bolster are arranged between this flexible PCB and this framework.
15. liquid crystal display as claimed in claim 14 is characterized in that: this bolster is a sponge.
16. liquid crystal display as claimed in claim 11 is characterized in that: form an inclined-plane on this first teat, itself and this prismatic lens adjacency.
17. liquid crystal display as claimed in claim 11, it is characterized in that: form a groove on this framework, and form one first flank corresponding on this light guide plate with this groove, by this first flank being placed this groove, so that this light guide plate is fixed in this framework.
18. liquid crystal display as claimed in claim 11 is characterized in that: this second teat is on the prism bearing of trend that is formed on this prismatic lens.
19. liquid crystal display as claimed in claim 11 is characterized in that this backlight module also comprises:
One light source, this light source is arranged in this framework, and with the first teat adjacency of this light guide plate.
20. liquid crystal display as claimed in claim 19 is characterized in that: this light source is a light emitting diode.
21. liquid crystal display as claimed in claim 11 is characterized in that this backlight module also comprises:
One diffusion sheet, this diffusion sheet are arranged between this prismatic lens and this light guide plate.
22. liquid crystal display as claimed in claim 21, it is characterized in that: form a groove on this framework, and form one second flank corresponding on this diffusion sheet with this groove, by this second flank being placed this groove, this diffusion sheet can be fixed in this framework.
23. liquid crystal display as claimed in claim 11 is characterized in that this backlight module also comprises:
One reflector plate, this reflector plate is pasted on this light guide plate, and lays respectively at the not homonymy of this light guide plate with this prismatic lens system.
24. liquid crystal display as claimed in claim 23 is characterized in that this backlight module also comprises:
One double faced adhesive tape, this double faced adhesive tape are arranged between this light guide plate and this reflector plate, in order to paste this reflector plate on this light guide plate.
25. liquid crystal display as claimed in claim 11 is characterized in that also comprising:
One shading rubber belt, this shading rubber belt are arranged between this prismatic lens and this liquid crystal panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031475221A CN1313873C (en) | 2003-07-09 | 2003-07-09 | LCD unit and thin type backlight module thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031475221A CN1313873C (en) | 2003-07-09 | 2003-07-09 | LCD unit and thin type backlight module thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1567060A CN1567060A (en) | 2005-01-19 |
| CN1313873C true CN1313873C (en) | 2007-05-02 |
Family
ID=34471969
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031475221A Expired - Lifetime CN1313873C (en) | 2003-07-09 | 2003-07-09 | LCD unit and thin type backlight module thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1313873C (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007163556A (en) * | 2005-12-09 | 2007-06-28 | Hitachi Displays Ltd | Liquid crystal display device |
| US20120176567A1 (en) * | 2009-09-15 | 2012-07-12 | Sharp Kabushiki Kaisha | Liquid crystal display device |
| CN103975192B (en) * | 2011-12-06 | 2016-01-20 | 夏普株式会社 | Backlight unit and liquid crystal indicator |
| CN102929038A (en) * | 2012-10-10 | 2013-02-13 | 无锡博一光电科技有限公司 | Liquid crystal display module (LCM) |
| TWI494659B (en) * | 2012-11-16 | 2015-08-01 | Au Optronics Corp | Back light module and display device using the same |
| TWI580893B (en) * | 2014-11-12 | 2017-05-01 | 元太科技工業股份有限公司 | Light emitting module and display device |
| KR102403671B1 (en) * | 2015-09-18 | 2022-05-27 | 엘지디스플레이 주식회사 | Display Device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1349126A (en) * | 2000-10-13 | 2002-05-15 | 三星电子株式会社 | Back light component used for liquid crystal display device |
| CN1371018A (en) * | 2001-02-20 | 2002-09-25 | 达碁科技股份有限公司 | Lightguide plate fixing frame and its back lighting device |
| JP2003107467A (en) * | 2001-09-27 | 2003-04-09 | Kawaguchiko Seimitsu Co Ltd | Backlight structure for liquid crystal display device |
| CN1444071A (en) * | 2002-03-08 | 2003-09-24 | 三星电子株式会社 | Liquid crystal display |
| US6820992B2 (en) * | 2001-09-14 | 2004-11-23 | Chunghwa Picture Tubes, Ltd. | Backlight module device |
-
2003
- 2003-07-09 CN CNB031475221A patent/CN1313873C/en not_active Expired - Lifetime
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1349126A (en) * | 2000-10-13 | 2002-05-15 | 三星电子株式会社 | Back light component used for liquid crystal display device |
| CN1371018A (en) * | 2001-02-20 | 2002-09-25 | 达碁科技股份有限公司 | Lightguide plate fixing frame and its back lighting device |
| US6820992B2 (en) * | 2001-09-14 | 2004-11-23 | Chunghwa Picture Tubes, Ltd. | Backlight module device |
| JP2003107467A (en) * | 2001-09-27 | 2003-04-09 | Kawaguchiko Seimitsu Co Ltd | Backlight structure for liquid crystal display device |
| CN1444071A (en) * | 2002-03-08 | 2003-09-24 | 三星电子株式会社 | Liquid crystal display |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1567060A (en) | 2005-01-19 |
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Granted publication date: 20070502 |
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