CN104676389A - Backlight module, and control method and display device thereof - Google Patents
Backlight module, and control method and display device thereof Download PDFInfo
- Publication number
- CN104676389A CN104676389A CN201510137147.XA CN201510137147A CN104676389A CN 104676389 A CN104676389 A CN 104676389A CN 201510137147 A CN201510137147 A CN 201510137147A CN 104676389 A CN104676389 A CN 104676389A
- Authority
- CN
- China
- Prior art keywords
- led
- backlight module
- module
- colour temperature
- current value
- 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.)
- Pending
Links
Classifications
-
- 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
- G02F1/133603—Direct backlight with LEDs
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/3406—Control of illumination source
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Computer Hardware Design (AREA)
- Theoretical Computer Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Optics & Photonics (AREA)
- Planar Illumination Modules (AREA)
Abstract
The invention provides a backlight module, and a control method and a display device thereof. The backlight module comprises a plurality of LED (Light Emitting Diode) modules which are repeatedly arranged, wherein each LED module comprises at least two LED lamps which are arranged at intervals and are different in color temperature. The color temperature of the backlight module can be adjusted.
Description
Technical field
The present invention relates to field of liquid crystal display, particularly relate to a kind of backlight module and control method, display unit.
Background technology
Backlight module is one of key component of liquid crystal display, for display panels provides brightness and light source, thus makes display floater display frame.Therefore, the quality of the quality of the light source that backlight module provides, determines the display effect of liquid crystal display to a great extent.
Wherein, colour temperature weighs the important performance indications of of backlight module, for representing the yardstick that light source is photochromic.But existing backlight module is when making, and its colour temperature is fixed, and cannot adjust according to actual needs.
Summary of the invention
The object of this invention is to provide a kind of backlight module and control method, display unit, realize backlight module adjustable color.
To achieve these goals, embodiments provide a kind of backlight module, described backlight module comprises:
The multi-group light-emitting diode LED module of repeated arrangement, often organizes LED module and comprises the different LED of spaced at least two kinds of colour temperatures.
Above-mentioned backlight module, wherein, the described often LED organized in LED module has the identical but fluorescent material that thickness is different of concentration.
Above-mentioned backlight module, wherein, the described often LED organized in LED module has the different but fluorescent material that thickness is identical of concentration.
Above-mentioned backlight module, wherein, described backlight module is side backlight module.
To achieve these goals, the embodiment of the present invention additionally provides a kind of control method of backlight module, and described backlight module is the backlight module described in above-mentioned any one, and wherein, described control method comprises:
Determine the colour temperature that described backlight module is to be shown;
According to described colour temperature to be shown, control by the described current value often organizing LED described in LED module.
Above-mentioned control method, wherein, the first different LED of two kinds of colour temperatures and the second LED is comprised when often organizing LED module, and during second colour temperature of the first colour temperature of described first LED higher than described second LED, control to improve the first setting value by the first current value of described first LED, control to reduce by the second current value of described second LED the colour temperature that described first setting value improves described backlight module simultaneously.
Above-mentioned control method, wherein, the first different LED of two kinds of colour temperatures and the second LED is comprised when often organizing LED module, and during second colour temperature of the first colour temperature of described first LED higher than described second LED, control to reduce the second setting value by the first current value of described first LED, control to improve by the second current value of described second LED the colour temperature that described second setting value reduces described backlight module simultaneously.
To achieve these goals, the embodiment of the present invention additionally provides a kind of display unit, and wherein, described display unit comprises the backlight module as described in above-mentioned any one.
Above-mentioned display unit, wherein, described display unit also comprises:
Control circuit, for according to described backlight module colour temperature to be shown, controls by the described current value often organizing LED described in LED module.
In embodiments of the present invention, in backlight module, be provided with many groups LED module of repeated arrangement, often organize LED module and comprise the different LED of spaced at least two kinds of colour temperatures.According to the colour temperature that whole backlight module is to be shown, control the current value by often organizing LED in LED module, thus realize backlight module adjustable color.
Accompanying drawing explanation
The structural representation of the backlight module that Fig. 1 provides for the embodiment of the present invention;
The schematic flow sheet of the control method of the backlight module that Fig. 2 provides for the embodiment of the present invention;
The structural representation of the side backlight module that Fig. 3 provides for the embodiment of the present invention;
Wherein, primary clustering symbol description:
1:LED module, 11: the first LED, 12: the second LED, 2: light guide plate.
Detailed description of the invention
For the embodiment of the present invention will be solved technical problem, technical scheme and advantage clearly, be described in detail below in conjunction with the accompanying drawings and the specific embodiments.
Embodiments provide a kind of backlight module, described backlight module as shown in Figure 1, comprising:
The multi-group light-emitting diode LED module 1 of repeated arrangement, often organizes LED module 1 and comprises the different LED of spaced at least two kinds of colour temperatures.
Wherein, preferably, often organize LED module 1 and comprise the first different LED 11 and the second LED 12 of spaced colour temperature.
Further, the difference of LED colour temperature can be realized by the identical but fluorescent material that thickness is different of coating concentration or different but thickness the is identical fluorescent material of concentration.Particularly, when the first LED 11 and the second LED 12 have the identical but fluorescent material that thickness is different of concentration, colour temperature corresponding to the LED that fluorescent material thickness is large is lower; When the first LED 11 and the second LED 12 have the different but fluorescent material that thickness is identical of concentration, colour temperature corresponding to the LED that phosphor concentration is large is lower.
In embodiments of the present invention, additionally provide a kind of control method realizing backlight module, to realize the adjustable color of backlight module, described control method as shown in Figure 2, comprising:
Step 21, determines the colour temperature that described backlight module is to be shown;
Step 22, according to described colour temperature to be shown, controls by the described current value often organizing LED described in LED module 1.
When the colour temperature that backlight module is to be shown is higher, the current value often organizing the LED that colour temperature is high in LED module 1 now can be improved; On the contrary, when the colour temperature that backlight module is to be shown is on the low side, now can improves the current value often organizing the LED that colour temperature is low in LED module 1, thus realize object of the present invention.
Said process, while the colour temperature improving backlight module, also improves the light of backlight module entirety.Certainly, in embodiments of the present invention, also can when backlight module overall brightness be constant, the colour temperature of adjustment backlight module.Illustrate as follows.
For side backlight module, as shown in Figure 3, be provided with many groups LED module 1 of repeated arrangement at the side of light guide plate, often organize LED module 1 and comprise the first different LED 11 and the second LED 12 of spaced colour temperature.Wherein, the first colour temperature of the first LED 11 is higher than the second colour temperature of described second LED 12.
When backlight module overall brightness is constant, when needing the colour temperature improving backlight module, control to improve the first setting value by the first current value of described first LED 11, control to reduce described first setting value by the second current value of described second LED 12 simultaneously.
When needing the colour temperature reducing backlight module, control to reduce the second setting value by the first current value of described first LED 11, control to improve by the second current value of described second LED 12 colour temperature that described second setting value reduces described backlight module simultaneously.
Such as, the current value of the first LED 11 and the second LED 12 is 20 milliamperes (mA).When not changing backlight module overall brightness, when needing the colour temperature improving backlight module, control to improve 10mA by the first current value of described first LED 11, namely be 30mA by the first current value of the first LED 11, control to reduce 10mA by the second current value of described second LED 12, be namely 10mA by the first current value of the second LED 12 simultaneously.Now, the current value that the overall brightness of backlight module is equivalent to the first LED 11 and the second LED 12 is the brightness of 20 MAHs, but overall colour temperature is partial to the colour temperature of the first LED 11, i.e. high color temperature.
Similarly, can control to reduce 10mA by the first current value of described first LED 11, improve 10mA by the second current value of described second LED 12, realize backlight module overall brightness constant, but colour temperature is partial to the colour temperature of the second LED 12, i.e. low colour temperature.
Be more than with side backlight module, and often to organize in LED module the LED only including two kinds of colour temperatures different be example, but the present invention is not limited to above-described embodiment.
In addition, embodiments provide a kind of display unit, wherein, described display unit comprises the backlight module as described in above-mentioned any one.
Above-mentioned display unit, wherein, described display unit also comprises:
Control circuit, for according to described backlight module colour temperature to be shown, controls by the described current value often organizing LED described in LED module.
Wherein, the setting of described control circuit and existingly provide the circuit of electric current similar for backlight module, only controls by the current value of the different LED of colour temperature different.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (9)
1. a backlight module, is characterized in that, described backlight module comprises:
The multi-group light-emitting diode LED module of repeated arrangement, often organizes LED module and comprises the different LED of spaced at least two kinds of colour temperatures.
2. backlight module as claimed in claim 1, is characterized in that, the described often LED organized in LED module has the identical but fluorescent material that thickness is different of concentration.
3. backlight module as claimed in claim 1, is characterized in that, the described often LED organized in LED module has the different but fluorescent material that thickness is identical of concentration.
4. the backlight module as described in any one of claim 1-3, is characterized in that, described backlight module is side backlight module.
5. a control method for backlight module, described backlight module is the backlight module described in any one of claim 1-4, and it is characterized in that, described control method comprises:
Determine the colour temperature that described backlight module is to be shown;
According to described colour temperature to be shown, control by the described current value often organizing LED described in LED module.
6. control method as claimed in claim 5, it is characterized in that, the first different LED of two kinds of colour temperatures and the second LED is comprised when often organizing LED module, and during second colour temperature of the first colour temperature of described first LED higher than described second LED, control to improve the first setting value by the first current value of described first LED, control to reduce by the second current value of described second LED the colour temperature that described first setting value improves described backlight module simultaneously.
7. control method as claimed in claim 5, it is characterized in that, the first different LED of two kinds of colour temperatures and the second LED is comprised when often organizing LED module, and during second colour temperature of the first colour temperature of described first LED higher than described second LED, control to reduce the second setting value by the first current value of described first LED, control to improve by the second current value of described second LED the colour temperature that described second setting value reduces described backlight module simultaneously.
8. a display unit, is characterized in that, described display unit comprises the backlight module as described in any one of claim 1-4.
9. display unit as claimed in claim 8, it is characterized in that, described display unit also comprises:
Control circuit, for according to described backlight module colour temperature to be shown, controls by the described current value often organizing LED described in LED module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510137147.XA CN104676389A (en) | 2015-03-26 | 2015-03-26 | Backlight module, and control method and display device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510137147.XA CN104676389A (en) | 2015-03-26 | 2015-03-26 | Backlight module, and control method and display device thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104676389A true CN104676389A (en) | 2015-06-03 |
Family
ID=53311793
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510137147.XA Pending CN104676389A (en) | 2015-03-26 | 2015-03-26 | Backlight module, and control method and display device thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104676389A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105551440A (en) * | 2015-12-08 | 2016-05-04 | 深圳天珑无线科技有限公司 | Mobile terminal and color temperature adjusting method thereof |
| CN105572968A (en) * | 2015-12-22 | 2016-05-11 | 武汉华星光电技术有限公司 | Backlight module, liquid crystal display device and backlight adjusting method of liquid crystal display device |
| CN105700240A (en) * | 2016-04-27 | 2016-06-22 | 京东方科技集团股份有限公司 | Backlight module, backlight color temperature adjusting method, and display device |
| CN105954931A (en) * | 2016-06-28 | 2016-09-21 | 广东欧珀移动通信有限公司 | Backlight module, display module and electronic apparatus |
| CN106205508A (en) * | 2016-09-22 | 2016-12-07 | 昆山龙腾光电有限公司 | Backlight adjusting method and backlight adjusting means for liquid crystal indicator |
| CN107153301A (en) * | 2017-06-21 | 2017-09-12 | 北京小米移动软件有限公司 | Backlight module, display module and electronic equipment |
| CN108194865A (en) * | 2017-12-29 | 2018-06-22 | 深圳Tcl新技术有限公司 | Backlight assembly, backlight module, display device and its control method |
| US10113944B2 (en) | 2016-05-26 | 2018-10-30 | Shenzhen China Star Optoelectronics Technology Co., Ltd | Circuit board testing apparatus and circuit board testing method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090002858A1 (en) * | 2006-03-01 | 2009-01-01 | Satoshi Okutsu | Color filter and liquid crystal display device |
| CN101876409A (en) * | 2009-04-30 | 2010-11-03 | 苏州向隆塑胶有限公司 | Backlight module capable of fine-tuning chromaticity and light mixing method thereof |
| CN201893339U (en) * | 2010-11-11 | 2011-07-06 | 西安麟字半导体照明有限公司 | Integrated type LED light source |
| EP2573451A1 (en) * | 2011-09-22 | 2013-03-27 | Ledengin, Inc. | Selection of Phosphors and LEDS in a Multi-Chip Emitter for a Single White Color Bin |
| CN104036734A (en) * | 2013-03-05 | 2014-09-10 | 元太科技工业股份有限公司 | Light emitting module and electronic device |
| CN104347785A (en) * | 2013-08-07 | 2015-02-11 | 广州众恒光电科技有限公司 | Die-method fluorescent powder adhesive layer coating process |
-
2015
- 2015-03-26 CN CN201510137147.XA patent/CN104676389A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090002858A1 (en) * | 2006-03-01 | 2009-01-01 | Satoshi Okutsu | Color filter and liquid crystal display device |
| CN101876409A (en) * | 2009-04-30 | 2010-11-03 | 苏州向隆塑胶有限公司 | Backlight module capable of fine-tuning chromaticity and light mixing method thereof |
| CN201893339U (en) * | 2010-11-11 | 2011-07-06 | 西安麟字半导体照明有限公司 | Integrated type LED light source |
| EP2573451A1 (en) * | 2011-09-22 | 2013-03-27 | Ledengin, Inc. | Selection of Phosphors and LEDS in a Multi-Chip Emitter for a Single White Color Bin |
| CN104036734A (en) * | 2013-03-05 | 2014-09-10 | 元太科技工业股份有限公司 | Light emitting module and electronic device |
| CN104347785A (en) * | 2013-08-07 | 2015-02-11 | 广州众恒光电科技有限公司 | Die-method fluorescent powder adhesive layer coating process |
Non-Patent Citations (2)
| Title |
|---|
| 孟治国等: "《LED驱动与智能控制》", 31 January 2015 * |
| 郁道银等: "《工程光学基础教程》", 30 June 2007 * |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105551440A (en) * | 2015-12-08 | 2016-05-04 | 深圳天珑无线科技有限公司 | Mobile terminal and color temperature adjusting method thereof |
| CN105572968A (en) * | 2015-12-22 | 2016-05-11 | 武汉华星光电技术有限公司 | Backlight module, liquid crystal display device and backlight adjusting method of liquid crystal display device |
| WO2017107269A1 (en) * | 2015-12-22 | 2017-06-29 | 武汉华星光电技术有限公司 | Backlight module, liquid crystal display device and backlight adjustment method therefor |
| US10146088B2 (en) | 2015-12-22 | 2018-12-04 | Wuhan China Star Optoelectronics Technology Co., Ltd | Backlight module, liquid crystal display device and backlight adjustment method thereof |
| CN105700240A (en) * | 2016-04-27 | 2016-06-22 | 京东方科技集团股份有限公司 | Backlight module, backlight color temperature adjusting method, and display device |
| US10113944B2 (en) | 2016-05-26 | 2018-10-30 | Shenzhen China Star Optoelectronics Technology Co., Ltd | Circuit board testing apparatus and circuit board testing method |
| CN105954931A (en) * | 2016-06-28 | 2016-09-21 | 广东欧珀移动通信有限公司 | Backlight module, display module and electronic apparatus |
| CN106205508A (en) * | 2016-09-22 | 2016-12-07 | 昆山龙腾光电有限公司 | Backlight adjusting method and backlight adjusting means for liquid crystal indicator |
| CN107153301A (en) * | 2017-06-21 | 2017-09-12 | 北京小米移动软件有限公司 | Backlight module, display module and electronic equipment |
| CN108194865A (en) * | 2017-12-29 | 2018-06-22 | 深圳Tcl新技术有限公司 | Backlight assembly, backlight module, display device and its control method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104676389A (en) | Backlight module, and control method and display device thereof | |
| CN105372878B (en) | Quantum dot light emitting device, backlight module and display device | |
| CN105527753B (en) | A kind of backlight module, display device, lighting apparatus | |
| US10613379B2 (en) | Backlight driving control method and system | |
| CN103280203B (en) | LED backlight drive circuit, liquid crystal indicator and a kind of driving method | |
| CN203686775U (en) | LD fill-in light backlight device | |
| US20160322025A1 (en) | Method and apparatus for adjusting display brightness of display apparatus and display apparatus | |
| US10146088B2 (en) | Backlight module, liquid crystal display device and backlight adjustment method thereof | |
| CN105700240A (en) | Backlight module, backlight color temperature adjusting method, and display device | |
| CN104916235A (en) | Backlight adjustable type light display device | |
| CN101656031B (en) | LED ground display device | |
| US20120057102A1 (en) | Backlight module | |
| CN101415282A (en) | Method and apparatus for regulating and checking lightness of light-emitting diode display panel | |
| US8362702B2 (en) | Local dimming control method and apparatus of edge-type backlight module | |
| EP2106608A2 (en) | Color-controlled backlit display device | |
| CN102661523A (en) | LED lamp strip, method for manufacturing same and backlight module | |
| CN209803514U (en) | mini LED backlight source, backlight module and liquid crystal display device | |
| CN102194411A (en) | Picture adjusting method, device and system | |
| CN101968172A (en) | Color temperature variable white LED module and application method thereof | |
| CN201866617U (en) | Single-side light entry type LED (light emitting diode) backlight source device | |
| CN201803239U (en) | LED unilateral light backlight module and liquid crystal display device thereof | |
| CN101363999A (en) | LCD, backlight module and light source regulation means | |
| CN202839736U (en) | Light emitting diode matrix substrate | |
| CN201589920U (en) | LED liquid crystal display with adjustable colors | |
| CN201819073U (en) | Backlight module |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150603 |