CN102654276A - Reflector plate and straight down type backlight module applying same - Google Patents
Reflector plate and straight down type backlight module applying same Download PDFInfo
- Publication number
- CN102654276A CN102654276A CN2012100013178A CN201210001317A CN102654276A CN 102654276 A CN102654276 A CN 102654276A CN 2012100013178 A CN2012100013178 A CN 2012100013178A CN 201210001317 A CN201210001317 A CN 201210001317A CN 102654276 A CN102654276 A CN 102654276A
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- China
- Prior art keywords
- reflector plate
- open
- work
- backlight module
- locating hole
- 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.)
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133605—Direct backlight including specially adapted reflectors
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133611—Direct backlight including means for improving the brightness uniformity
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
- G02F2201/46—Fixing elements
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Planar Illumination Modules (AREA)
- Liquid Crystal (AREA)
Abstract
The embodiment of the invention discloses a reflector plate and a straight down type backlight module applying the same, relating to the technical field of liquid crystal display and solving the problems that the existing method for improving uniformity of the backlight module can increase cost of the module and improvement effect is poor. According to the embodiment of the invention, a through hole can leave out one part of rays in the rays emitted by a tube arranged on the reflector plate, thus brightness of the backlight module near the through hole can be reduced. Besides, the through hole is arranged in the central region of the reflector plate, thus the central brightness of the backlight module applying the reflector plate can be reduced, and uniformity of the backlight module can be obviously improved. Further, a manner that a hole is punched on the reflector plate is adopted, thus no additional process is required to be added when the reflector plate is manufactured, and cost of the reflector plate and the backlight module applying the reflector plate can not be increased.
Description
Technical field
The present invention relates to technical field of liquid crystal display, relate in particular to reflector plate and use the down straight aphototropism mode set of this reflector plate.
Background technology
Module backlight is the very important building block of LCD; Adopt CCFL (Cold Cathode Fluorescent Lamp; Cathode fluorescent tube) module backlight is still used by existing most of LCD owing to its cheap, technology maturation.
CCFL module backlight is divided into straight-down negative and side entering type, and wherein, straight-down negative CCFL module backlight is to be configured in CCFL on the reflector plate, makes these CCFL to liquid crystal panel light source to be provided at the rear of liquid crystal panel.Reflector plate is used for the light direction reflection of the light that CCFL sent that is mounted thereon towards module backlight.
All once being an important parameter weighing module performance backlight, is the numerical value that brightness minimum of a value on this module backlight obtains after divided by center brightness.In the process of making straight-down negative CCFL module backlight; After the thickness (light mixing distance) of module backlight is confirmed; Can be through increasing diaphragm quantity, using the methods such as diffuser plate of special pattern (site) once improving to a certain extent all; But so not only can increase the manufacturing cost of module, and the effect of improving is also very little.
Summary of the invention
The present invention provides a kind of reflector plate and uses the down straight aphototropism mode set of this reflector plate, can under the certain situation of this module thickness, significantly increase this module all once, and can not increase the manufacturing cost of this module.
For achieving the above object, the present invention adopts following technical scheme:
A kind of reflector plate; It is provided with and is used for fixing said reflector plate in the locating hole on the module backlight and be used for fixing the lamp holder locating hole of fluorescent tube on said reflector plate, and said reflector plate also comprises: the open-work that is provided with in the central area of said reflector plate, except that said locating hole and the position the said lamp holder locating hole.
A kind of down straight aphototropism mode set comprises: CCFL and above-mentioned reflector plate, the lamp holder locating hole in the said reflector plate is used for fixing said CCFL.
The reflector plate that the embodiment of the invention provides and using in the down straight aphototropism mode set of this reflector plate; Because open-work can be missed a part of light in the fluorescent tube emitted light that is installed on the said reflector plate, therefore can reduce near the brightness of the module backlight of open-work.In addition,, therefore can reduce the center brightness of the module backlight of this reflector plate of application because open-work is arranged at the central area of said reflector plate, thus can improve module backlight all once.
Further; Since adopted the mode of on reflector plate, punching improve module backlight all once; Can make in the locating hole and lamp holder locating hole of reflector plate manufacturer on making reflector plate, open-work is formed on the assigned address of reflector plate, need not increase extra procedure; Therefore, can not increase the cost of this reflector plate.
Description of drawings
In order to be illustrated more clearly in the technical scheme in the embodiment of the invention; The accompanying drawing of required use is done to introduce simply in will describing embodiment below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
The plan view of the reflector plate that Fig. 1 provides for the embodiment of the invention.
The specific embodiment
The embodiment of the invention provides a kind of reflector plate; It is provided with and is used for fixing said reflector plate in the locating hole on the module backlight and be used for fixing the lamp holder locating hole of fluorescent tube on said reflector plate, and said reflector plate also comprises: the open-work that is provided with in the central area of said reflector plate, except that said locating hole and the position the said lamp holder locating hole.
The embodiment of the invention provides a kind of down straight aphototropism mode set again, comprising: CCFL and above-mentioned reflector plate, the lamp holder locating hole in the said reflector plate is used for fixing said CCFL.
The reflector plate that the embodiment of the invention provides and using in the down straight aphototropism mode set of this reflector plate; Because open-work can be missed a part of light in the fluorescent tube emitted light that is installed on the said reflector plate, therefore can reduce near the brightness of the module backlight of open-work.In addition,, therefore can reduce the center brightness of the module backlight of this reflector plate of application because open-work is arranged at the central area of said reflector plate, thus can significantly improve module backlight all once.
Further; Since adopted the mode of on reflector plate, punching improve module backlight all once; Can make in the locating hole and lamp holder locating hole of reflector plate manufacturer on making reflector plate, open-work is formed on the assigned address of reflector plate, need not increase extra procedure; Therefore, can not increase this reflector plate and use the cost of the module backlight of this reflector plate.
To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention is carried out clear, intactly description, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, the every other embodiment that those of ordinary skills are obtained under the prerequisite of not making creative work belongs to the scope that the present invention protects.
The embodiment of the invention provides a kind of reflector plate; As shown in Figure 1; It is provided be used for fixing said reflector plate on module backlight locating hole A and be used for fixing the fluorescent tube D (rectangle of dotted lines; The purpose that with dashed lines is drawn is in order to represent that fluorescent tube D is in the position on the reflector plate) lamp holder locating hole B (hole that comprises in the ellipse of dotted lines all is lamp holder locating hole B) on said reflector plate, it also comprises: in the central area of said reflector plate (circle of dotted lines), remove the open-work C of said locating hole A and the setting of the position the said lamp holder locating hole B.
Because open-work C can miss a part of light in the fluorescent tube D emitted light that is installed on the said reflector plate, therefore can reduce near the brightness of the module backlight of open-work C.In addition, because open-work C is arranged at the central area of said reflector plate, should be on reflector plate corresponding zone, selected module backlight zone when the central area is measuring center brightness.Therefore can reduce the center brightness of the module backlight of this reflector plate of application, thus can improve module backlight all once.Corresponding zone on reflector plate, selected module backlight zone when wherein, the central area is measuring center brightness.
Further; Since adopted the mode of on reflector plate, punching improve module backlight all once; Can make in the locating hole A and lamp holder locating hole B of reflector plate manufacturer on making reflector plate, can open-work C be formed on the assigned address of reflector plate, need not increase extra procedure; Therefore, can not increase the cost of this reflector plate.
The shape of open-work C can also can be other shape for circular or oval.According to practical experience, open-work is designed to circle or ellipse, be convenient to take off in the reflector plate production process paper operation.
The number of open-work C can be shown in Figure 1 18, be divided into 3 row and be arranged on the said reflector plate, and open-work can be that diameter is the circular hole of 4mm that open-work can be 10mm along the interval of fluorescent tube D length direction, perpendicular to the 8mm that is spaced apart of fluorescent tube D length direction.
3 row open-works can be in staggered distribution, and also can not stagger, and are arranged in rectangle, and the mode that is in staggered distribution can avoid center brightness low excessively, and the unusual problem of the LCD picture that causes takes place.
Table 1 shows module backlight that employing is not provided with the open-work reflecting plate and adopts equal once the comparing result of module backlight that is provided with the open-work reflecting plate.
Table 1 reflecting plate all once had not been provided with open-work and the module brightness backlight that open-work is set
| Module numbering backlight | 1 | 2 | 3 | 4 | 5 |
| Open-work is not set | 75.0％ | 74.3％ | 76.7％ | 75.7％ | 76.4％ |
| Open-work is set | 78.3％ | 80.9％ | 78.9％ | 79.1％ | 80.1％ |
Certainly; The number of open-work, size, the position in the central area, arrangement mode and spacing etc. on the reflector plate; Can require according to the picture quality of the module backlight that uses this reflector plate and the decision of Machine Design characteristic, situation shown in Figure 1 is wherein a kind of embodiment just.
The embodiment of the invention also provides a kind of down straight aphototropism mode set, comprising: CCFL and above-mentioned reflector plate, the lamp holder locating hole in this reflector plate is used for fixing this CCFL.
Owing to used above-mentioned reflector plate with open-work once can significantly improve all, and cost is low in the down straight aphototropism mode set that the embodiment of the invention provides.
The above; Be merely the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, any technical staff who is familiar with the present technique field is in the technical scope that the present invention discloses; The variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of said claim.
Claims (5)
1. reflector plate; It is provided with and is used for fixing said reflector plate in the locating hole on the module backlight and be used for fixing the lamp holder locating hole of fluorescent tube on said reflector plate; It is characterized in that, also comprise: the open-work that is provided with in the central area of said reflector plate, except that said locating hole and the position the said lamp holder locating hole; Should be on said reflector plate corresponding zone, selected module backlight zone when said central area is measuring center brightness.
2. reflector plate according to claim 1 is characterized in that, said open-work be shaped as circle or ellipse.
3. reflector plate according to claim 1; It is characterized in that; The number of said open-work is 18, is divided into 3 row and is arranged on the said reflector plate, and said open-work is that diameter is the circular hole of 4mm; Between said open-work along said fluorescent tube length direction be spaced apart 10mm, perpendicular to the 8mm that is spaced apart of said fluorescent tube length direction.
4. reflector plate according to claim 3 is characterized in that, said 3 row open-works are in staggered distribution.
5. down straight aphototropism mode set, comprising: cathode fluorescent tube CCFL is characterized in that also comprise: each described reflector plate of claim 1～4, the lamp holder locating hole in the said reflector plate is used for fixing said CCFL.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100013178A CN102654276A (en) | 2012-01-04 | 2012-01-04 | Reflector plate and straight down type backlight module applying same |
| PCT/CN2012/084112 WO2013102369A1 (en) | 2012-01-04 | 2012-11-06 | Reflective sheet and direct backlight module using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100013178A CN102654276A (en) | 2012-01-04 | 2012-01-04 | Reflector plate and straight down type backlight module applying same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102654276A true CN102654276A (en) | 2012-09-05 |
Family
ID=46729946
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100013178A Pending CN102654276A (en) | 2012-01-04 | 2012-01-04 | Reflector plate and straight down type backlight module applying same |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102654276A (en) |
| WO (1) | WO2013102369A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013102369A1 (en) * | 2012-01-04 | 2013-07-11 | 京东方科技集团股份有限公司 | Reflective sheet and direct backlight module using same |
| CN107436511A (en) * | 2017-09-25 | 2017-12-05 | 四川长虹电器股份有限公司 | A kind of optical design method for lifting directly-down liquid crystal module brightness homogeneity |
| WO2021243795A1 (en) * | 2020-06-02 | 2021-12-09 | Tcl华星光电技术有限公司 | Display device and backlight module |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101275719A (en) * | 2007-03-27 | 2008-10-01 | 鸿富锦精密工业（深圳）有限公司 | LED lighting device |
| CN201599726U (en) * | 2009-12-25 | 2010-10-06 | 康佳集团股份有限公司 | Reflector |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100666961B1 (en) * | 2005-08-18 | 2007-01-10 | 주식회사 파이컴 | Back light apparatus |
| JP4741913B2 (en) * | 2005-09-15 | 2011-08-10 | Ｎｅｃ液晶テクノロジー株式会社 | Backlight unit |
| EP2161493A4 (en) * | 2007-07-04 | 2010-12-01 | Sharp Kk | Lighting apparatus, display unit, and television receiver |
| RU2430298C2 (en) * | 2007-07-04 | 2011-09-27 | Шарп Кабусики Кайся | Intensifier, display and tv receiver |
| WO2009050916A1 (en) * | 2007-10-19 | 2009-04-23 | Sharp Kabushiki Kaisha | Lighting installation, display and television receiver |
| CN102654276A (en) * | 2012-01-04 | 2012-09-05 | 京东方科技集团股份有限公司 | Reflector plate and straight down type backlight module applying same |
-
2012
- 2012-01-04 CN CN2012100013178A patent/CN102654276A/en active Pending
- 2012-11-06 WO PCT/CN2012/084112 patent/WO2013102369A1/en active Application Filing
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101275719A (en) * | 2007-03-27 | 2008-10-01 | 鸿富锦精密工业（深圳）有限公司 | LED lighting device |
| CN201599726U (en) * | 2009-12-25 | 2010-10-06 | 康佳集团股份有限公司 | Reflector |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013102369A1 (en) * | 2012-01-04 | 2013-07-11 | 京东方科技集团股份有限公司 | Reflective sheet and direct backlight module using same |
| CN107436511A (en) * | 2017-09-25 | 2017-12-05 | 四川长虹电器股份有限公司 | A kind of optical design method for lifting directly-down liquid crystal module brightness homogeneity |
| WO2021243795A1 (en) * | 2020-06-02 | 2021-12-09 | Tcl华星光电技术有限公司 | Display device and backlight module |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2013102369A1 (en) | 2013-07-11 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120905 |