CN100376971C - Backlight module and liquid crystal display device - Google Patents
Backlight module and liquid crystal display device Download PDFInfo
- Publication number
- CN100376971C CN100376971C CNB2005100526624A CN200510052662A CN100376971C CN 100376971 C CN100376971 C CN 100376971C CN B2005100526624 A CNB2005100526624 A CN B2005100526624A CN 200510052662 A CN200510052662 A CN 200510052662A CN 100376971 C CN100376971 C CN 100376971C
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- Prior art keywords
- light
- space
- backlight module
- circuit board
- light source
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- Expired - Fee Related
Links
- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 20
- 239000011159 matrix material Substances 0.000 claims description 2
- 239000003292 glue Substances 0.000 description 22
- 239000000463 material Substances 0.000 description 4
- 239000002390 adhesive tape Substances 0.000 description 3
- 238000004026 adhesive bonding Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
Images
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- Liquid Crystal (AREA)
- Planar Illumination Modules (AREA)
Abstract
The present invention provides a back light module which is applied to a liquid crystal display. The present invention comprises a frame, a light guide plate, and a light source, wherein the frame is provided with a caulking groove which is provided with a first space and a second space; the light guide plate is arranged in the frame and is provided with a light incident surface; the light source is arranged in the caulking groove and is contiguous to the light incident surface of the light guide plate, and the light source is provided with a circuit plate and a luminous element; the circuit plate is contained in the first space, the luminous element is contained in the second space, the luminous element is provided with a light emergent surface and a joint surface, the light emergent surface is in parallel with the light incident surface, and the luminous element is fixed to the circuit plate through the joint surface.
Description
Technical field
The present invention relates to a kind of backlight module, particularly relate to a kind of backlight module and use the liquid crystal indicator of this backlight module.
Background technology
LCD is a kind of common electronic product, is applied in the electronic installations such as personal computer or mobile phone, in order to show image and literal.Liquid crystal display in LCD comprises backlight module and liquid crystal panel, and backlight module is in order to bearing liquid crystal display panel, and provides liquid crystal panel required light.
With existing technology, when the backlight module of design small-medium size, adopt the gluing mode that the circuit of light sources plate is fixed on the glue frame of backlight module usually.This kind gluing mode need be used extra material (as double faced adhesive tape), and does position correction in the subsides man-hour requirement.Moreover along with the increase of service time, or the change of environment temperature, it is unstable that adhesive backers can become, and makes the circuit of light sources plate upspring or the phenomenon of perk.At this moment, can depart from the incidence surface of light guide plate, make liquid crystal panel can't obtain enough illuminations, the problem that causes brightness to reduce by the light that light source sent.
Summary of the invention
In view of this, the invention provides a kind of backlight module, be applied to LCD, comprising: a framework, have a caulking groove, this caulking groove has one first space and one second space; One light guide plate is arranged in this framework, has an incidence surface; An and light source, be arranged in this caulking groove, and be adjacent to this incidence surface of this light guide plate, this light source has a circuit board and a light-emitting component, wherein, this circuit board is placed in this first space, this light-emitting component is contained in this second space, and wherein, this light-emitting component has an exiting surface and a joint face, this exiting surface is parallel in fact with this incidence surface, and this light-emitting component is fixed on this circuit board via this joint face.
The present invention also provides a kind of liquid crystal indicator, comprises above-mentioned backlight module.
For above-mentioned purpose of the present invention, feature and advantage can be become apparent, especially exemplified by preferred embodiment, and cooperate appended graphicly, be described in detail below:
Description of drawings
Fig. 1 is the exploded view of liquid crystal display of the present invention;
Fig. 2 is the exploded view before glue frame of the present invention and the combination of light sources;
Fig. 3 a is the cut-open view of the glue frame of Fig. 2 along the I-I direction;
Fig. 3 b is the cut-open view of the glue frame of Fig. 2 along the II-II direction;
Fig. 4 is the cut-open view after the liquid crystal display of Fig. 1 makes up.
Embodiment
Main spirit of the present invention is caulking groove of design on the glue frame of backlight module, utilizes embedded mode, and light source is fixed on the glue frame, so, need not can firmly light source be fixed by other material or part (as double faced adhesive tape).
Fig. 1 is the exploded view of liquid crystal display 10 of the present invention.As shown in the figure, liquid crystal display 10 comprises backlight module 11 and liquid crystal panel 12.Backlight module 11 comprises glue frame 13, light guide plate 14 and light source 15.Liquid crystal panel 12 and light guide plate 14 all are arranged in the glue frame 13.Glue frame 13 has caulking groove 16.The side of light guide plate 14 has incidence surface 17.Light source 15 embeds in the caulking groove 16, combines closely with glue frame 13.
Fig. 2 is the exploded view before glue frame 13 of the present invention and light source 15 combinations.Light source 15 comprises circuit board 21, light-emitting component 22 and extension circuit 23.Light-emitting component 22 can be a single light emitting diode or as the light emitting diode matrix shown in scheming to go up.Extension circuit 23 is in order to be connected to circuit board 21 power supply (not shown go out).Light-emitting component 22 has exiting surface 24 and joint face 25.The exiting surface 24 of light-emitting component 22 is parallel to the incidence surface 17 (asking for an interview Fig. 1) of light guide plate 14.Light-emitting component 22 is fixed on the circuit board 21 via joint face 25, and this moment, exiting surface 24 was parallel to each other with joint face 25.
Fig. 3 a is the cut-open view of the glue frame 13 of Fig. 2 along the I-I direction.Fig. 3 b is the cut-open view of the glue frame 13 of Fig. 2 along the II-II direction.Herein please be simultaneously with reference to Fig. 2.The caulking groove 16 of glue frame 13 is designed in incidence surface 17 sides of light guide plate 14, comprises first space 26, second space 27 and the 3rd space 28.First space 26 is the slit of strip, penetrates the upper and lower surface of glue frame 13.Second space 27 and the 3rd space 28 all are groove.
Fig. 4 is the cut-open view after the liquid crystal display 10 of Fig. 1 makes up.Herein please be simultaneously with reference to Fig. 1 and Fig. 3.When light source 15 embedded caulking groove 16, circuit board 21 was placed in first space 26, and light-emitting component 22 is placed in second space 27, and extension circuit 23 is placed in the 3rd space 28.The direction B of the longitudinally A in first space 26 and the incidence surface 17 of light guide plate 14 is perpendicular.Light source 15 is positioned at incidence surface 17 sides of light guide plate 14.The light 18 that light source 15 is provided enters light guide plate 14 by incidence surface 17, via the diffusion of light guide plate 14, leaves light guide plate 14 to illuminate liquid crystal panel 12 by the top equably.
In the present invention, the shape in first space 26 can cooperate the external form of circuit board 21 and adjust, and makes circuit board 21 can closely be fastened in first space 26.For example, circuit board 21 among Fig. 3 is flexible printed wiring board (the Flexible Printed Circuit Board of strip, FPC) or printed circuit board (PCB) (Printed Circuit Board, PCB), the shape in first space 26 among Fig. 4 promptly is designed to strip by correspondence.Again, the width in first space 26 also can cooperate the thickness of circuit board 21 and adjust.In like manner, the shape in second space 27 also can cooperate the external form of light-emitting component 22 and adjust.
What need remark additionally is that when light source 15 combined with glue frame 13, the exiting surface 24 of light-emitting component 22 must align with the incidence surface 17 of light guide plate 14, made light 18 can enter light guide plate 14 effectively herein.Because the caulking groove 16 of glue frame 13 can cooperate the external form of light source 15 to adjust,, can reach the requirement of position correction simultaneously so that light source 15 is combined closely with glue frame 13 via above-mentioned adjustment.
In liquid crystal display of the present invention, have a caulking groove on the glue frame of backlight module, utilize embedded mode, light source is fixed on the glue frame, need not can firmly light source be fixed by other material or part (as double faced adhesive tape).So extra material be can save, assembling sequence and step simplified, and the burden of the calibration that dips.
In addition, the structural design that this kind light source combines with the glue frame can reduce the possibility that light source is upspring or broken away from the glue frame.And, when light source need be changed, only need light source is got final product by extracting in the caulking groove, in maintenance, be very easy to.
Though disclosed the present invention in conjunction with above preferred embodiment; yet it is not in order to limit scope of the present invention; anyly be familiar with this operator; without departing from the spirit and scope of the present invention; can do some change and retouching, so protection scope of the present invention should be with being as the criterion that claim was defined.
Claims (11)
1. a backlight module is applied to LCD, comprising:
One framework has an embedded groove, and this embedded groove has one first space and one second space, and first space penetrates the upper and lower surface of this framework, and second space is a groove;
One light guide plate is arranged in this framework, has an incidence surface; And
One light source, be arranged in this embedded groove, and be adjacent to this incidence surface of this light guide plate, this light source has a circuit board and a light-emitting component, wherein, this circuit board embeds in this first space, this light-emitting component is arranged in this second space, and wherein, this light-emitting component has an exiting surface and a joint face, this exiting surface is parallel with this incidence surface, and this light-emitting component is fixed on this circuit board via this joint face.
2. backlight module as claimed in claim 1, wherein this embedded groove penetrates the upper and lower surface of this framework.
3. backlight module as claimed in claim 1, wherein this first space is rectangular seam.
4. backlight module as claimed in claim 3, wherein the longitudinally in this first space is vertical with the direction of this incidence surface.
5. backlight module as claimed in claim 1, wherein this light source also comprises an extension circuit, and in order to this circuit board is connected to a power supply, and this embedded groove also comprises one the 3rd space, when this light source embedded this embedded groove, this extension circuit was placed in the 3rd space.
6. backlight module as claimed in claim 5, wherein the 3rd space is a groove.
7. backlight module as claimed in claim 1, wherein this circuit board is a flexible printed wiring board.
8. backlight module as claimed in claim 1, wherein this circuit board is a printed circuit board (PCB).
9. backlight module as claimed in claim 1, wherein this light-emitting component is a light emitting diode.
10. backlight module as claimed in claim 1, wherein this light-emitting component is a light emitting diode matrix.
11. a liquid crystal indicator comprises backlight module as claimed in claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100526624A CN100376971C (en) | 2005-03-03 | 2005-03-03 | Backlight module and liquid crystal display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100526624A CN100376971C (en) | 2005-03-03 | 2005-03-03 | Backlight module and liquid crystal display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1651994A CN1651994A (en) | 2005-08-10 |
| CN100376971C true CN100376971C (en) | 2008-03-26 |
Family
ID=34876641
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100526624A Expired - Fee Related CN100376971C (en) | 2005-03-03 | 2005-03-03 | Backlight module and liquid crystal display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100376971C (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100365477C (en) * | 2006-02-16 | 2008-01-30 | 友达光电股份有限公司 | Planar display device |
| CN101281324B (en) * | 2008-06-04 | 2010-06-02 | 友达光电股份有限公司 | Backlight module |
| CN101551534B (en) * | 2009-04-30 | 2012-12-26 | 友达光电（苏州）有限公司 | LCD device |
| KR101684290B1 (en) | 2010-07-14 | 2016-12-21 | 엘지디스플레이 주식회사 | Liquid Crystal Display Device |
| CN104950516A (en) * | 2015-07-13 | 2015-09-30 | 深圳市赛时达光电科技有限公司 | Vehicle-mounted center control display unit provided with double layers of FPC (flexible printed circuit) backlights |
| CN111221180B (en) | 2020-01-20 | 2022-05-13 | 京东方科技集团股份有限公司 | Backlight and display device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003107467A (en) * | 2001-09-27 | 2003-04-09 | Kawaguchiko Seimitsu Co Ltd | Backlight structure for liquid crystal display device |
| US20040264211A1 (en) * | 2003-06-26 | 2004-12-30 | Samsung Eectronics Co., Ltd. | Two-way backlight assembly and two-way liquid crystal display apparatus having the same |
-
2005
- 2005-03-03 CN CNB2005100526624A patent/CN100376971C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003107467A (en) * | 2001-09-27 | 2003-04-09 | Kawaguchiko Seimitsu Co Ltd | Backlight structure for liquid crystal display device |
| US20040264211A1 (en) * | 2003-06-26 | 2004-12-30 | Samsung Eectronics Co., Ltd. | Two-way backlight assembly and two-way liquid crystal display apparatus having the same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1651994A (en) | 2005-08-10 |
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| PB01 | Publication | ||
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| C14 | Grant of patent or utility model | ||
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Granted publication date: 20080326 |