CN100517012C - Backlight module group and liquid crystal display device - Google Patents
Backlight module group and liquid crystal display device Download PDFInfo
- Publication number
- CN100517012C CN100517012C CNB2006100631714A CN200610063171A CN100517012C CN 100517012 C CN100517012 C CN 100517012C CN B2006100631714 A CNB2006100631714 A CN B2006100631714A CN 200610063171 A CN200610063171 A CN 200610063171A CN 100517012 C CN100517012 C CN 100517012C
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- CN
- China
- Prior art keywords
- liquid crystal
- guide plate
- ridge wall
- light guide
- glue frame
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Planar Illumination Modules (AREA)
- Light Guides In General And Applications Therefor (AREA)
Abstract
The backlight module comprises a light-guiding plate and a plastic frame. Said light-guiding plate comprises an incident face and two side wall adjacent to said incident face; each said wall comprises a plane and a concave ridge wall; the length of said ridge wall occupies the 1/3 or 2/3 total length of the light guiding plate; said plastic frame holds the light-guiding plate, and comprises two sliding slots corresponding to said ridge wall; said sliding slots holds said ridge wall in order to make the light guiding plate secured on the plastic frame.
Description
Technical field
The present invention relates to a kind of module backlight and liquid crystal indicator.
Background technology
In recent years, advantage such as LCD is frivolous because of volume, and it is little to take up room, and radiation is little shows the main flow of product and occupied gradually, and has replaced traditional cathode-ray tube display gradually.And the demonstration of liquid crystal panel needs by a light source, as module backlight, for liquid crystal panel provides brightness planar light adequately and uniformly.
Seeing also Fig. 1, is a kind of decomposing schematic representation of prior art liquid crystal indicator.This liquid crystal indicator 1 comprises a liquid crystal panel 11 and a module 12 backlight of stacked setting.This module 12 backlight provides uniform in-plane light for this liquid crystal panel 11.
This module 12 backlight comprises an optical diaphragm group 13, a light guide plate 14, a reflector plate 15, a light source 16 and a glue frame 18.This light guide plate 14 comprises an incidence surface 144, an exiting surface adjacent with this incidence surface 144 146, one and these exiting surface 146 opposed bottom surface 148, and with these incidence surface 144 adjacent and two sides 141,142 respect to one another.Two projections 147 of symmetry are extended in each side 141,142.The thickness of this projection 147 equals the thickness of this light guide plate 14 substantially.This glue frame 18 comprises and this projection 147 corresponding four grooves 187, and a light source is provided with portion 185.
This glue frame 18 is accommodated this light guide plate 14, and 144 pairs of this incidence surfaces should be provided with portion's 185 settings by light source.These groove 187 correspondences are accommodated the projection 147 of this light guide plate 14.This light source 16 is arranged at this light source and is provided with in the portion 185.This optical diaphragm group 13 is arranged at this exiting surface 146 1 sides, and this reflector plate 15 is arranged at this bottom surface 148 1 sides.
The groove 187 of this glue frame 18 cooperates with the projection 147 of this light guide plate 14, and then fixes this light guide plate 14.Yet, innovation along with technology, the thickness of this light guide plate 14 improves attenuation gradually from original 0.8mm, 0.6mm, 0.4mm by now, 0.3mm, in addition thinner, at this moment, this projection 147 is also lightening thereupon, then its physical strength just reduces, and fractures easily, and then has reduced the reliability of this module 12 backlight and this liquid crystal indicator 1.
Summary of the invention
In order to solve the low problem of prior art module reliability backlight, be necessary the module backlight that provides a kind of reliability higher.
In addition, provide a kind of reliability higher liquid crystal indicator.
A kind of module backlight, it comprises a light guide plate and a glue frame.This light guide plate comprises an incidence surface, the adjacent and two side respect to one another with this incidence surface, and each sidewall comprises the ridge wall of a plane and an inside retraction.The length of this ridge wall accounts for 1/3rd to 2/3rds of this light guide plate sidewall length.This glue frame is accommodated this light guide plate, and comprises and corresponding two chutes of this ridge wall.This chute is accommodated this ridge wall, and then this light guide plate is fixed on this glue frame.
A kind of liquid crystal indicator, it comprises a liquid crystal panel and adjacent this liquid crystal panel and for this liquid crystal panel provides the module backlight of light source, this liquid crystal panel is adjacent to this module backlight.This module backlight comprises a light guide plate and a glue frame.This light guide plate comprises an incidence surface, the adjacent and two side respect to one another with this incidence surface, and each sidewall comprises the ridge wall of a plane and an inside retraction.The length of this ridge wall accounts for 1/3rd to 2/3rds of this light guide plate sidewall length.This glue frame is accommodated this light guide plate, and comprises and corresponding two chutes of this ridge wall.This chute is accommodated this ridge wall, and then this light guide plate is fixed on this glue frame.
Compared with prior art, this module backlight and adopt the ridge wall of light guide plate of the liquid crystal indicator of this module backlight to cooperate and fix this light guide plate with this glue frame, its reliability has satisfied the demand of light guide plate thinning development, simultaneously, this ridge wall also can utilize the side light leak again, reduces optical loss.
Description of drawings
Fig. 1 is a kind of decomposing schematic representation of prior art liquid crystal indicator.
Fig. 2 is the decomposing schematic representation of liquid crystal indicator first embodiment of the present invention.
Fig. 3 is the schematic perspective view of the light guide plate of liquid crystal indicator shown in Figure 2.
Fig. 4 is the sectional view of light guide plate IV-IV shown in Figure 3.
Fig. 5 is the glue frame of liquid crystal indicator shown in Figure 2 and the assembling synoptic diagram of light guide plate.
Fig. 6 is the schematic perspective view of the light guide plate of liquid crystal indicator second embodiment of the present invention.
Fig. 7 is the sectional view of light guide plate shown in Figure 6 along VII-VII.
Fig. 8 is the schematic perspective view of the light guide plate of liquid crystal indicator the 3rd embodiment of the present invention.
Fig. 9 is the sectional view of light guide plate shown in Figure 8 along IX-IX.
Embodiment
Seeing also Fig. 2, is the decomposing schematic representation of liquid crystal indicator first embodiment of the present invention.This liquid crystal indicator 2 comprises a liquid crystal panel 22 and a module 20 backlight of stacked setting.This module 20 backlight provides uniform in-plane light for this liquid crystal panel 22.
This module 20 backlight comprises an optical diaphragm group 23, a light guide plate 24, a reflector plate 25, a light source 26 and a glue frame 28.Seeing also Fig. 3, is the schematic perspective view of the light guide plate 24 of liquid crystal indicator 2 shown in Figure 2.This light guide plate 24 comprises an incidence surface 244, an exiting surface that links to each other with this incidence surface 244 246, one and these exiting surface 246 opposed bottom surface 248, and one with these incidence surface 244 adjacent and two sides 241,242 respect to one another.This sidewall 241,242 comprises one away from these incidence surface 244 1 sides and the inside ridge wall 249 of retraction, and contiguous these incidence surface 244 1 sides and the vertical plane 247 of this incidence surface 244.The length of this ridge wall 249 accounts for 1/3rd to 2/3rds of these sidewall 241,242 length, sees also Fig. 4, is the sectional view of the ridge wall 249 of light guide plate 24 shown in Figure 3 along IV-IV.The side of this ridge wall 249 is triangular in shape, advances in this light guide plate 24 from the light that this light source 26 sends, and this ridge wall 249 of directive, the triangle of this ridge wall 249 changes the travel path of light, and this light guide plate 24 of light reflected back is utilized again, reduces the loss of light.
This glue frame 28 comprise with this ridge wall 249 corresponding cross sections be that a leg-of-mutton chute 289 and a light source are provided with portion 285.
Seeing also Fig. 5, is the glue frame 28 of liquid crystal indicator 2 shown in Figure 2 and the assembling synoptic diagram of light guide plate 24.This chute 289 is accommodated this ridge wall 249, and 244 pairs of this incidence surfaces should be provided with portion's 285 settings by light source.This light source 26 is arranged at this light source and is provided with in the portion 285.This optical diaphragm group 23 is arranged at this exiting surface 246 1 sides, and this reflector plate 25 is arranged at this bottom surface 248 1 sides.
The ridge wall 249 of these light guide plate 24 sidewalls 241,242 cooperates with the chute 289 of this glue frame 28, and then fixes this light guide plate 24, and its reliability has satisfied the demand of light guide plate 24 thinnings development.Simultaneously, this ridge wall 249 also can utilize the light leak of sidewall 241,242 again, thereby improves light utilization efficiency.
Seeing also Fig. 6, is the schematic perspective view of the light guide plate of liquid crystal indicator second embodiment of the present invention.The difference of second embodiment and first embodiment is: the cross section semicircular in shape of the ridge wall 349 of light guide plate 34, as shown in Figure 7.This glue frame (figure does not show) cooperates this ridge wall 349 to be provided with semicircle chute (figure does not show).
Seeing also Fig. 8, is the schematic perspective view of the light guide plate of liquid crystal indicator the 3rd embodiment of the present invention.The difference of the 3rd embodiment and first embodiment is: the cross section of the ridge wall 449 of light guide plate 44 is trapezoidal, as shown in Figure 9.This glue frame (figure does not show) cooperates this ridge wall 449 to be provided with trapezoidal chute (figure does not show).
Claims (10)
1. module backlight, it comprises a light guide plate and a glue frame, this light guide plate comprises an incidence surface, adjacent and the two side respect to one another with this incidence surface, it is characterized in that: each sidewall comprises the ridge wall of a plane and an inside retraction, and the length of this ridge wall accounts for 1/3rd to 2/3rds of this light guide plate sidewall length, and this glue frame comprises and corresponding two chutes of this ridge wall, this chute is accommodated this ridge wall, and then this light guide plate is fixed on this glue frame.
2. module backlight as claimed in claim 1 is characterized in that: the cross section of this ridge wall and this chute is a triangle.
3. module backlight as claimed in claim 1 is characterized in that: the cross section of this ridge wall and this chute is for semicircle.
4. module backlight as claimed in claim 1 is characterized in that: the cross section of this ridge wall and this chute is trapezoidal.
5. module backlight as claimed in claim 1 is characterized in that: this module backlight comprises a light source, and this glue frame comprises that the light source of accommodating this light source is provided with portion.
6. liquid crystal indicator, the module backlight that it comprises a liquid crystal panel and adjacent this liquid crystal panel and light source is provided for this liquid crystal panel, this module backlight comprises a light guide plate and a glue frame, this light guide plate comprises an incidence surface, adjacent and the two side respect to one another with this incidence surface, it is characterized in that: each sidewall comprises the ridge wall of a plane and an inside retraction, the length of this ridge wall accounts for 1/3rd to 2/3rds of this light guide plate sidewall length, this glue frame comprises and corresponding two chutes of this ridge wall, this chute is accommodated this ridge wall, and then this light guide plate is fixed on this glue frame.
7. liquid crystal indicator as claimed in claim 6 is characterized in that: the cross section of this ridge wall and this chute is a triangle.
8. liquid crystal indicator as claimed in claim 6 is characterized in that: the cross section of this ridge wall and this chute is for semicircle.
9. liquid crystal indicator as claimed in claim 6 is characterized in that: the cross section of this ridge wall and this chute is trapezoidal.
10. liquid crystal indicator as claimed in claim 6 is characterized in that: this module backlight comprises a light source, and this glue frame comprises that the light source of accommodating this light source is provided with portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100631714A CN100517012C (en) | 2006-10-18 | 2006-10-18 | Backlight module group and liquid crystal display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100631714A CN100517012C (en) | 2006-10-18 | 2006-10-18 | Backlight module group and liquid crystal display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101165562A CN101165562A (en) | 2008-04-23 |
| CN100517012C true CN100517012C (en) | 2009-07-22 |
Family
ID=39334306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100631714A Expired - Fee Related CN100517012C (en) | 2006-10-18 | 2006-10-18 | Backlight module group and liquid crystal display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100517012C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103414858A (en) * | 2013-07-30 | 2013-11-27 | 昆山维金五金制品有限公司 | Screen pressing piece |
| CN104534359B (en) * | 2014-12-25 | 2017-10-03 | 武汉天马微电子有限公司 | A kind of back lighting device |
-
2006
- 2006-10-18 CN CNB2006100631714A patent/CN100517012C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN101165562A (en) | 2008-04-23 |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090722 Termination date: 20161018 |
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| CF01 | Termination of patent right due to non-payment of annual fee |