CN100498459C - Back light module unit and LCD device - Google Patents
Back light module unit and LCD device Download PDFInfo
- Publication number
- CN100498459C CN100498459C CNB2006100634252A CN200610063425A CN100498459C CN 100498459 C CN100498459 C CN 100498459C CN B2006100634252 A CNB2006100634252 A CN B2006100634252A CN 200610063425 A CN200610063425 A CN 200610063425A CN 100498459 C CN100498459 C CN 100498459C
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- module backlight
- guide plate
- optical diaphragm
- light guide
- light source
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Abstract
The invention relates to a backlight module group and a liquid crystal display device applying the backlight module group. The backlight module group comprises a light source, an optical diaphragm group, a light guide plate and a compartment body. The light source comprises a metal reflex housing, and the metal reflex housing comprises a first surface. The light guide plate comprises a light incoming surface and a light outgoing surface adjacent to the light incoming surface. The light source is arranged on one side of the light incoming surface, the first surface of the metal reflex housing is fitted on the light outgoing surface of the light guide plate, and the optical diaphragm group is arranged on one side of the light outgoing surface. The compartment body is arranged between the optical diaphragm group and the first surface of the metal reflex housing. The compartment body partitions the optical diaphragm group and the metal reflex housing, which can prevent the light source from being too hot thus causing the optical diaphragm group being influenced and having uneven light outgoing, thereby preventing the corrugation phenomenon of the displayed image, and improving the illumination uniformity of the backlight module group.
Description
Technical field
The present invention relates to a kind of module backlight and liquid crystal indicator.
Background technology
In recent years, liquid crystal indicator is because volume is frivolous, and advantage such as it is little to take up room, and radiation is little shows the main flow of product and occupied gradually, and replaced traditional CRT display gradually.Liquid crystal indicator generally includes an area source, as module backlight, for liquid crystal panel provides brightness planar light adequately and uniformly.
Seeing also Fig. 1, is a kind of three-dimensional exploded view of prior art liquid crystal indicator.This liquid crystal indicator 1 comprises a liquid crystal panel 12 and a module 13 backlight.These module 13 adjacent these liquid crystal panels 12 backlight also provide uniform in-plane light for this liquid crystal panel 12.
This module 13 backlight comprises a glue frame 15, an optical diaphragm group 180, a light source 19 and a reflector plate 190 that a light guide plate 16, two is identical.This glue frame 15 is square framework.This light guide plate 16 comprises the exiting surface 162 that two relative incidence surfaces 161, one and this two incidence surface 161 are adjacent, and one with these exiting surface 162 opposed bottom surface 163.This light source 19 comprises the metallic reflector 18 that a fluorescent tube 17 and a cross section take the shape of the letter U.
Seeing also Fig. 2, is the assembling synoptic diagram of light source 19, light guide plate 16, optical diaphragm group 180 and the reflector plate 190 of liquid crystal indicator 1 shown in Figure 1.U-shaped two ends of this two metallic reflector 18 fit the respectively exiting surface 162 and this bottom surface 163 of this light guide plate 16, and then form a receiving space with the incidence surface 161 of this light guide plate 16 and accommodate this fluorescent tube 17.This optical diaphragm group 180 is arranged at exiting surface 162 1 sides of this light guide plate 16, and the edge of its edge and this metallic reflector 18 is adjacent, and this reflector plate 190 is arranged at bottom surface 163 1 sides of this light guide plate 16.
This glue frame 15 is accommodated this light source 19, this light guide plate 16, this optical diaphragm group 180 and this reflector plate 190.This liquid crystal panel 12 is arranged at this optical diaphragm group 180 1 sides.
Yet this fluorescent tube 17 continues when luminous, and this metallic reflector 18 operative temperature of transmitting of being heated raises, and this optical diaphragm group 180 of adjacent setting also can be subjected to thermal-radiating influence with it.The thickness of this optical diaphragm group 180 is extremely thin, be about 0.4mm, cause this optical diaphragm group 180 and this metallic reflector 18 adjacent edges to meet hot perk, outgoing was inhomogeneous when light penetrated this optical diaphragm group 180, cause these module 13 bright dippings backlight inhomogeneous, cause the display quality of liquid crystal indicator 1 lower, the waviness phenomena of picture occurs.
Summary of the invention
In order to solve the uneven problem of prior art module bright dipping backlight, be necessary to provide a kind of emitting uniform module backlight.
In addition, also be necessary to provide a kind of liquid crystal indicator that uses above-mentioned module backlight.
A kind of module backlight, it comprises that a light source, an optical diaphragm group, a light guide plate and have the interval body of heat insulating function.This light source comprises a metallic reflector, and this metallic reflector comprises a first surface.This light guide plate comprises an incidence surface, an exiting surface adjacent with this incidence surface, and this light source is arranged at this incidence surface one side, the fit exiting surface of this light guide plate of the first surface of this metallic reflector, this optical diaphragm group is arranged at this exiting surface one side.This interval body is arranged between this optical diaphragm group and this metallic reflector first surface.
A kind of 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 that a light source, an optical diaphragm group, a light guide plate and have the interval body of heat insulating function.This light source comprises a metallic reflector, and this metallic reflector comprises a first surface.This light guide plate comprises an incidence surface, an exiting surface adjacent with this incidence surface, and this light source is arranged at this incidence surface one side, the fit exiting surface of this light guide plate of the first surface of this metallic reflector, this optical diaphragm group is arranged at this exiting surface one side.This interval body is arranged between this optical diaphragm group and this metallic reflector first surface.
Compared with prior art, aforementioned interval body separates optical diaphragm group and metallic reflector, can prevent that overheated this optical diaphragm group that causes of light source is influenced and bright dipping is inhomogeneous, thereby prevent the waviness phenomena of display frame, improve the uniformity of luminance of the present invention's module backlight, and then improve the demonstration essence of liquid crystal indicator of the present invention.
Description of drawings
Fig. 1 is a kind of three-dimensional exploded view of prior art liquid crystal indicator.
Fig. 2 is the assembling synoptic diagram of light source, light guide plate, optical diaphragm group and the reflector plate of liquid crystal indicator shown in Figure 1.
Fig. 3 is the decomposing schematic representation of liquid crystal indicator first embodiment of the present invention.
Fig. 4 is the assembling synoptic diagram of the module backlight of liquid crystal indicator shown in Figure 3.
Fig. 5 is the synoptic diagram of light guide plate, fluorescent tube and the metallic reflector of liquid crystal indicator second embodiment of the present invention.
Fig. 6 is the assembling synoptic diagram of the module backlight of liquid crystal indicator the 3rd embodiment of the present invention.
Embodiment
See also Fig. 3, Fig. 3 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 21 backlight.This module 21 adjacent these liquid crystal panels 22 backlight and provide uniform in-plane light for this liquid crystal panel 22.
This module 23 backlight comprises a glue frame 25, an optical diaphragm group 280, a light source 29 and a reflector plate 290 that a light guide plate 26, two is identical.
This light source 29 comprises the metallic reflector 28 that a fluorescent tube 27 and a cross section take the shape of the letter U.Comprise a first surface (not indicating) in some of this metallic reflector 28.This fluorescent tube 27 is a cold-cathode fluorescence lamp.This light guide plate 26 comprises the exiting surface 262 that two relative incidence surfaces 261, one and this two incidence surface 261 are adjacent, and one with these exiting surface 262 opposed bottom surface 263.The exiting surface 262 of this light guide plate 26 is provided with two parallel and bar shaped interval bodies 268 respect to one another, and this interval body 268 is one-body molded with this light guide plate 26.This interval body 268 is identical with these optical diaphragm group 280 thickness, and its cross section is a rectangle.The length of this two interval body 268 is corresponding with the length of this two metallic reflector 28.This glue frame 25 is square framework, and it comprises four sidewalls (not indicating), and this four sidewall is inboard along stretching a wall extension 258 to the framework of this glue frame 25.
Seeing also Fig. 4, is the assembling synoptic diagram of the module backlight 21 of liquid crystal indicator 2 shown in Figure 3.U-shaped two ends of this two metallic reflector 28 fit the respectively exiting surface 262 and this bottom surface 263 of this light guide plate 26, this first surface contacts at this interval body 268, and then forms a receiving space with the incidence surface 261 of this light guide plate 26 and accommodate this fluorescent tube 27.The interval body 268 of the exiting surface 262 of this light guide plate 26 is adjacent with an end of this metallic reflector 28.This optical diaphragm group 280 is arranged at exiting surface 262 1 sides of this light guide plate 26, and between this two interval body 268.This reflector plate 290 is arranged at bottom surface 263 1 sides of this light guide plate 26.This glue frame 25 is accommodated this light source 29, this light guide plate 26, this optical diaphragm group 280 and this reflector plate 290.The wall extension 258 of this glue frame 25 covers this metallic reflector 28 and the top of this interval body 268 and the edge of this optical diaphragm group 280, prevents the light leak of this interval body 268.
This liquid crystal panel 22 is arranged at this optical diaphragm group 280 1 sides.
The interval body 268 of this light guide plate 26 is spaced apart with this optical diaphragm group 280 with this metallic reflector 28, can prevent that this fluorescent tube 27 from continuing when luminous, the operative temperature rising that this metallic reflector 28 is heated and transmits, this optical diaphragm group 280 causes the waviness phenomena of display frame because its inequality of being heated causes itself and metallic reflector 28 adjacent edges to meet hot perk.Simultaneously, this optical diaphragm group 280 is located fast.
Seeing also Fig. 5, is the synoptic diagram of light guide plate, fluorescent tube and this fluorescent tube reflex housing of liquid crystal indicator second embodiment of the present invention.The difference of the present embodiment and first embodiment is: liquid crystal indicator (figure does not show) only comprises that a light source 39, this light source 39 comprise a L shaped fluorescent tube 37 and corresponding with it L shaped metallic reflector 38.This light guide plate 36 comprise two adjacent settings and with these fluorescent tube 37 corresponding incidence surfaces 361.The exiting surface 362 of this light guide plate 36 is provided with and this metallic reflector 38 corresponding L shaped interval bodies 368.
Seeing also Fig. 6, is the assembling synoptic diagram of the module backlight of liquid crystal indicator the 3rd embodiment of the present invention.The difference of the 3rd embodiment and first embodiment is: the wall extension 458 of glue frame 45 extends an interval body 468 downwards, and this interval body 468 is integrally formed with this glue frame 45.This interval body 468 is optical diaphragm group 480 and metallic reflector 48 at interval.
The interval body of liquid crystal indicator of the present invention is not limited to be arranged on the light guide plate exiting surface or on this glue frame wall extension, also can be an independent object.The cross section of this interval body also is not limited to rectangle, also can be semicircle.
Claims (10)
1. module backlight, it comprises a light source, one optical diaphragm group and a light guide plate, this light source comprises a metallic reflector, this metallic reflector comprises a first surface, this light guide plate comprises an incidence surface and an exiting surface adjacent with this incidence surface, this light source is arranged at this incidence surface one side, the fit exiting surface of this light guide plate of the first surface of this metallic reflector, this optical diaphragm group is arranged at this exiting surface one side, it is characterized in that: this module backlight comprises that further one has the interval body of heat insulating function, and it is arranged between this optical diaphragm group and this metallic reflector first surface.
2. module backlight as claimed in claim 1 is characterized in that: this light source further comprises a fluorescent tube, and it is contained in this metallic reflector.
3. module backlight as claimed in claim 2 is characterized in that: this fluorescent tube is a cold-cathode fluorescence lamp.
4. module backlight as claimed in claim 1 is characterized in that: this interval body is arranged on the exiting surface of this light guide plate, and one-body molded with this light guide plate.
5. module backlight as claimed in claim 4 is characterized in that: the cross section of this interval body is a rectangle.
6. module backlight as claimed in claim 4 is characterized in that: the cross section of this interval body is for semicircle.
7. module backlight as claimed in claim 1 is characterized in that: this metallic reflector is L shaped, and this interval body is corresponding L shaped with this metallic reflector.
8. module backlight as claimed in claim 1 is characterized in that: this module backlight further comprises a glue frame, and this glue frame is accommodated this light source, this optical diaphragm group and this light guide plate.
9. module backlight as claimed in claim 8, it is characterized in that: this glue frame comprises a plurality of sidewalls, this sidewall is to the inner wall extension that extends of this glue frame, the first surface of this wall extension and this metallic reflector and this optical diaphragm group are adjacent, this interval body extends from this wall extension, and one-body molded with this wall extension.
10. 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, 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 |
|---|---|---|---|
| CNB2006100634252A CN100498459C (en) | 2006-11-01 | 2006-11-01 | Back light module unit and LCD device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100634252A CN100498459C (en) | 2006-11-01 | 2006-11-01 | Back light module unit and LCD device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101174056A CN101174056A (en) | 2008-05-07 |
| CN100498459C true CN100498459C (en) | 2009-06-10 |
Family
ID=39422653
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100634252A Active CN100498459C (en) | 2006-11-01 | 2006-11-01 | Back light module unit and LCD device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100498459C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102501767B (en) * | 2011-11-04 | 2015-07-15 | 博世汽车多媒体（芜湖）有限公司 | Liquid crystal display (LCD) screen module applied to automobile meter |
| CN107436508A (en) * | 2016-05-25 | 2017-12-05 | 鸿富锦精密工业（深圳）有限公司 | Backlight module and liquid crystal display device |
| CN106547131A (en) * | 2017-01-13 | 2017-03-29 | 奥英光电（苏州）有限公司 | A kind of LCM modules |
-
2006
- 2006-11-01 CN CNB2006100634252A patent/CN100498459C/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN101174056A (en) | 2008-05-07 |
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