CN201654370U - Backlight module, liquid crystal display and liquid crystal television - Google Patents
Backlight module, liquid crystal display and liquid crystal television Download PDFInfo
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- CN201654370U CN201654370U CN2009201322223U CN200920132222U CN201654370U CN 201654370 U CN201654370 U CN 201654370U CN 2009201322223 U CN2009201322223 U CN 2009201322223U CN 200920132222 U CN200920132222 U CN 200920132222U CN 201654370 U CN201654370 U CN 201654370U
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 94
- 230000004044 response Effects 0.000 claims abstract description 18
- 230000001105 regulatory effect Effects 0.000 claims description 24
- 238000001228 spectrum Methods 0.000 abstract description 7
- 238000005286 illumination Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000002950 deficient Effects 0.000 description 2
- 230000001915 proofreading effect Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000000246 remedial effect Effects 0.000 description 2
- 239000003086 colorant Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000005055 memory storage Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001902 propagating effect Effects 0.000 description 1
- 230000006903 response to temperature Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
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Abstract
The utility model relates to a backlight module capable of correcting color automatically, and a liquid crystal display as well as a liquid crystal television applying the same. The backlight module is applied to a liquid crystal display device which comprises a liquid crystal panel having a plurality of pixels and a liquid crystal panel driving circuit coupled with the liquid crystal panel; the backlight module comprises a backlight source and a temperature sensor, wherein the backlight source is used for providing backlight illumination for the liquid crystal panel, and the temperature sensor is used for sensing the temperature of the backlight source and outputting sensing signals associated with the temperature; the liquid crystal panel driving circuit is coupled to the temperature sensor, adjusts the driving voltage in response to the sensing signals and drives the liquid crystal panel based on the adjusted driving voltage. The utility model hereby adjusts the deflection angle of liquid crystal molecules in the liquid crystal panel to compensate deflection of light source color on a spectrum, thereby effectively solving the problem of distortion of the image color caused by deflection of the light source color.
Description
[technical field]
The utility model relates to a kind of backlight module, adopts the LCD and the LCD TV thereof of this backlight module, particularly can carry out backlight module, LCD and the LCD TV thereof of colour correction automatically.
[background technology]
Along with the progress of science and technology, LCD (Liquid Crystal Display is called for short LCD) is also day by day popularized.Existing backlight liquid crystal display module can be divided into side-light type, straight-down negative and three kinds of structures of hollow type on structure, wherein side light type back light module is subjected to the industry favor because structure is thin and uniformity of luminance is good.The employed backlight of backlight module has cathode fluorescent tube (Cold CathodeFluorescent Lamp substantially, be called for short CCFL) and light emitting diode (Light Emitting Diode, abbreviation LED) two kind, wherein light emitting diode has many advantages such as response speed is fast, the life-span long, color representation power is strong, it is more energy-conserving and environment-protective with respect to cathode fluorescent tube, have gradually to replace the trend of cathode fluorescent tube as the main flow backlight.
Yet LCD can wear out along with service time, and is wherein especially obvious with the backlight in the backlight module again.In backlight module, the light intensity that light emitting diode sent can change to some extent because of wearing out of temperature and assembly.And when light emitting diode uses as backlight, have only 15%～25% electric energy to convert luminous energy in its course of work, remaining electric energy nearly all converts heat energy to.And in side light type back light module, light emitting diode only can be installed in the side of light guide plate.Because the space of light guide plate side is narrow and small, be not easy to heat radiation, therefore make the working temperature of light emitting diode raise, and this can influence the working temperature of LED P N knot, cause the wavelength of light emitting diode output light to be offset, sometimes even skew more than the 10nm can take place.And optical wavelength and color are directly related, and the color offset that this wavelength variations produced not only can influence the color dot of light emitting diode itself, also can have influence on the white point of whole backlight module, because white light is mixed by versicolor light.The change of the white point of backlight module can cause the gray-scale deviation of gray level image, causes the shown image color distortion of LCD, thereby influences display effect.In order to make LCD can present stable brightness and color, must compensate at the color and the brightness of backlight module.
Because above shortcomings in the existing LCD provide a kind of LCD that overcomes above-mentioned shortcoming, become the industry problem demanding prompt solution.
[summary of the invention]
The technical matters that the utility model solves is that existing LCD is because the defective of the image color distortion that the light source color skew is caused.
Another technical matters that the utility model solves is that existing LCD TV is because the defective of the image color distortion that the light source color skew is caused.
The another technical matters that the utility model solves is the problem of the output light color skew of existing backlight module.
The technical scheme of the utility model technical solution problem is: a kind of LCD is provided, and it comprises liquid crystal panel, backlight module, temperature sensor and liquid crystal panel drive circuit.Liquid crystal panel has a plurality of pixels.Backlight module is provided with backlight, is used to liquid crystal panel that back lighting is provided.Temperature sensor is arranged in the backlight module, is used for the temperature of sensing backlight, and the sensing signal of output and temperature correlation connection.Liquid crystal panel drive circuit couples temperature sensor and liquid crystal panel, is used for regulating driving voltage in response to sensing signal, and drives liquid crystal panel based on the driving voltage after regulating.
Another technical scheme of the utility model technical solution problem is: a kind of liquid crystal TV set is provided, and it comprises liquid crystal panel, side light type back light module, temperature sensor and liquid crystal panel drive circuit.Liquid crystal panel has a plurality of pixels.Side light type back light module is provided with backlight, is used to liquid crystal panel that back lighting is provided.Temperature sensor is arranged in the backlight module, is used for the temperature of sensing backlight, and the sensing signal of output and temperature correlation connection.Liquid crystal panel drive circuit couples temperature sensor and liquid crystal panel, is used for regulating driving voltage in response to sensing signal, and drives liquid crystal panel based on the driving voltage after regulating.
The another technical scheme of the utility model technical solution problem is: a kind of backlight module is provided, this backlight module is applicable in a kind of liquid crystal indicator that liquid crystal indicator comprises liquid crystal panel with a plurality of pixels and the liquid crystal panel drive circuit that couples liquid crystal panel.Backlight module comprises backlight and temperature sensor.Backlight is used to liquid crystal panel that back lighting is provided.Temperature sensor is used for the temperature of sensing backlight, and the sensing signal of output and temperature correlation connection.Wherein, liquid crystal panel drive circuit couples temperature sensor, and it regulates driving voltage in response to sensing signal, and drives liquid crystal panel based on the driving voltage after regulating.
The LCD that the utility model provides has the following advantages in terms of existing technologies: owing to have incidence relation between the working temperature of the wavelength of light emitting diode output light and LED P N knot, therefore, the utility model adopts the mode that temperature sensor is set in backlight module, by the accurate temperature variation of light emitting diode in the sensing backlight module of temperature sensor, regulate driving voltage by liquid crystal panel drive circuit in response to this temperature variation then, and drive liquid crystal panel based on the driving voltage after regulating, adjust the deflection angle of liquid crystal molecule in the liquid crystal panel with this, lower the percent of pass that increases the light of part on the spectrum, reduce the percent of pass of the light of part on the enhanced spectrum, thereby improved effectively because the image color problem of dtmf distortion DTMF that the light source color skew is caused.
[description of drawings]
Fig. 1 is the structural representation of the LCD of embodiment of the present utility model.
Fig. 2 is the structured flowchart of the LCD of embodiment of the present utility model.
Fig. 3 is the structural representation of the backlight module of embodiment of the present utility model.
[embodiment]
To embodiment of the present utility model be described hereinafter in more detail referring to accompanying drawing.Yet the utility model can be presented as that different forms and tool should not be regarded as being limited to embodiment as herein described.Make this disclosure comprehensive and complete and provide these embodiments, and pass on category of the present utility model comprehensively to those skilled in the art.
Shown in accompanying drawing 1, at first the structure to the embodiment of LCD of the present utility model is described explanation.Fig. 2 is the structural representation of the LCD of embodiment of the present utility model.LCD 100 comprises liquid crystal panel 10, backlight module 20 and liquid crystal display drive circuit 30.Liquid crystal panel 10 has a plurality of pixels, is used for display image.Backlight module 20 is arranged on liquid crystal panel 10 belows, wherein is provided with backlight and is used to provide back lighting.Liquid crystal display drive circuit 30 couples liquid crystal panel 10, is used to provide driving voltage to drive liquid crystal panel 10.
Those skilled in the art should understand, " side light type back light module " that present embodiment is given an example only is a specific implementations, in another embodiment, backlight module 20 can adopt other modes such as straight-down negative, hollow type in abutting connection with the liquid crystal panel setting, so the utility model should not be defined in this kind specific implementations.
Backlight in the backlight module 20 comprises a plurality of light emitting diodes 22, and temperature sensor 21 next-door neighbour's light emitting diodes 22 are provided with.Because temperature sensor 21 next-door neighbour light emitting diodes 22 are provided with, thereby temperature sensor 21 working temperature of sensing light emitting diode 22 accurately.Because have incidence relation between the working temperature of the wavelength of the output light of light emitting diode 22 and the PN junction of light emitting diode 22, therefore, temperature variation by temperature sensor 21 sensing light emitting diodes 22, can learn the wavelength variations situation of light emitting diode 22, because between optical wavelength and the Show Color is fixed correspondence, and then can determine the color offset degree of light emitting diode 22.Temperature sensor 21 generates the temperature sensing signal that is associated according to the temperature value that senses, and exports liquid crystal display drive circuit 30 to.Liquid crystal display drive circuit 30 is regulated the driving voltage that is used to drive liquid crystal panel 10 based on temperature sensing signal, reaches the 22 output light color skews of compensation light emitting diode, the purpose of remedial frames display distortion.
Liquid crystal display drive circuit 30 comprises control circuit 31, correcting circuit 32, source electrode drive circuit 33, gate driver circuit 34 and backlight source driving circuit 35.Liquid crystal panel drive circuit 30 couples temperature sensor 21 and liquid crystal panel 10, and its sensing signal in response to temperature sensor 21 outputs is regulated driving voltage, and drives liquid crystal panel 10 based on the driving voltage after regulating.
Certainly, those skilled in the art should understand, " gammate voltage, colour signal RGB and backlight driver voltage " that present embodiment is given an example only is a specific implementations, in another embodiment, control circuit 31 also can select one of gamma voltage, colour signal RGB or it is in conjunction with proofreading and correct, and backlight driver voltage is not done correction, so the utility model should not be defined in this kind specific implementations.
In addition, those skilled in the art it is also understood that, " look-up table " that present embodiment is given an example only is a specific implementations, in another embodiment, control circuit 31 can adopt the method for function calculation, sensed temperature is compared with preset temperature value, to calculate the correction parameter of adjusting, so the utility model should not be defined in this kind specific implementations.
Gate driver circuit 34 comprises a plurality of gate drivers, and it sequentially scans the gate line that is electrically connected with the pixel of liquid crystal panel 10 in response to gate drive signal.Gate drive signal comprises the part of the control signal that control circuit 31 generates.Source electrode driver 33 comprises the multiple source driver equally, and it is in response to the gray-scale voltage from grey scale voltage generator 322, generates corresponding to the data drive voltage from the colour signal RGB of control circuit 31.When gate driver circuit 34 raster polar curves, source electrode driver 33 imposes on data drive voltage by data line the pixel of liquid crystal panel 10.
Backlight source driving circuit 35 couples the backlight in control circuit 31 and the backlight module 20, and the backlight that its controlled circuit 31 is controlled to be in the backlight module 20 provides driving voltage.Control circuit 31 is regulated the driving voltage of backlight source driving circuit 35 according to correction parameter, with the operating voltage and the working current of control light emitting diode 22, and then the light intensity and the optical wavelength of proofreading and correct the output light of light emitting diode 22.When the working temperature of light emitting diode 22 is too high, suitably regulate the working current of light emitting diode 22, can reduce the thermal value of light emitting diode 22 and the degrees of offset of optical wavelength.
Fig. 2 is the structured flowchart of the LCD of embodiment of the present utility model.As shown in Figure 3, in the backlight module 20 working temperature of light emitting diode 22 via temperature sensor 21 sensings after, generate temperature sensing signal and transfer to control circuit 31.Control circuit 31 is determined the correction parameter regulated according to temperature sensing signal, and comes one of gammate voltage, colour signal RGB and backlight driver voltage or its combination in response to correction parameter, and the correction parameter after regulating is transferred to correcting circuit 32.Correcting circuit 32 generates gray-scale voltage based on the correction parameter after regulating, and exports gray-scale voltage to source electrode drive circuit 33.Source electrode drive circuit 33 is in response to the gray-scale voltage from correcting circuit 32, and generate corresponding to data drive voltage from the colour signal RGB of control circuit 31, data drive voltage is imposed on the pixel of liquid crystal panel 10, thereby reach the 22 output light color skews of compensation light emitting diode, the purpose of remedial frames display distortion.
Fig. 3 is the structural representation of the backlight module of embodiment of the present utility model.Backlight module 20 comprises temperature sensor 21, light emitting diode 22, printed circuit board (PCB) 23 (Print Circuit Board is called for short PCB), heat radiator 24 and light guide plate 25.Temperature sensor 21 and light emitting diode 22 all are arranged on the printed circuit board (PCB) 23, and temperature sensor 21 next-door neighbour light emitting diodes 22 are provided with, so that the accurate working temperature of sensing light emitting diode 22.Heat radiator 24 is used for the heat that light emitting diode 22 is dispersed is conducted to outside the backlight module 20.Light guide plate 25 is provided with in abutting connection with light emitting diode 22, and it receives the light that light emitting diode 22 is launched, and the light of incident penetrates light guide plate 25 equably after propagating in light guide plate 25 internal reflections, form illuminated by surface light source.For light emitting diode 22 can better be dispelled the heat, printed circuit board (PCB) 23 can adopt metal substrate to make.Temperature sensor 21 and light emitting diode 22 can be arranged on the printed circuit board (PCB) 23 uniformly.Because the middle section of backlight module 20 can be subjected to the radiation of both sides light emitting diode 22, therefore brightness and heat also increase than the edge, in order to realize better uniformity of luminance and radiating effect, temperature sensor 21 and light emitting diode 22 also can adopt central authorities to dredge the close arrangement mode in both sides.
The LCD that the utility model provides is applicable to the liquid crystal indicator of all use light emitting diodes as backlight, includes but not limited to products such as LCD monitor, LCD TV, portable audiovisual device, liquid crystal billboard.
The LCD that the utility model provides has the following advantages in terms of existing technologies: owing to have incidence relation between the working temperature of the wavelength of light emitting diode output light and LED P N knot, therefore, the utility model adopts the mode that temperature sensor is set in backlight module, by the accurate temperature variation of light emitting diode in the sensing backlight module of temperature sensor, regulate driving voltage by liquid crystal panel drive circuit in response to this temperature variation then, and drive liquid crystal panel based on the driving voltage after regulating, adjust the deflection angle of liquid crystal molecule in the liquid crystal panel with this, lower the percent of pass that increases the light of part on the spectrum, reduce the percent of pass of the light of part on the enhanced spectrum, thereby improved effectively because the image color problem of dtmf distortion DTMF that the light source color skew is caused.
Above-mentioned embodiment only is used for the embodiment of the present utility model of giving an example, and explains technical characterictic of the present utility model, is not to be used for limiting category of the present utility model.Any be familiar with this operator can unlabored change or be equal to alternatively to be provided with and all belong to the scope that the utility model is advocated, interest field of the present utility model should be as the criterion with the application's claims restricted portion.
Claims (8)
1. a LCD is characterized in that, comprising:
Liquid crystal panel has a plurality of pixels;
Backlight module is provided with backlight, is used to this liquid crystal panel that back lighting is provided;
Temperature sensor is arranged in this backlight module, is used for the temperature of this backlight of sensing, and the sensing signal of output and this temperature correlation connection; And
Liquid crystal panel drive circuit couples this temperature sensor and this liquid crystal panel, is used for regulating driving voltage in response to this sensing signal, and drives this liquid crystal panel based on this driving voltage after regulating.
2. LCD according to claim 1 is characterized in that this liquid crystal panel drive circuit comprises:
Source electrode drive circuit couples this liquid crystal panel, is used to provide the source drive signal;
Gate driver circuit couples this liquid crystal panel, is used to provide gate drive signal;
Control circuit, couple this temperature sensor, source electrode drive circuit and gate driver circuit, receive this sensing signal and regulate correction parameter, and regulate this driving voltage, control this source electrode drive circuit and drive this liquid crystal panel based on this driving voltage after regulating based on this correction parameter.
3. LCD according to claim 2 is characterized in that this liquid crystal panel drive circuit also comprises:
Gamma voltage generator couples this control circuit, generates gamma voltage in response to this correction parameter;
Grey scale voltage generator couples this gamma voltage generator and this source electrode drive circuit, receives this gamma voltage, this gamma voltage is carried out dividing potential drop generating this gray-scale voltage, and export this gray-scale voltage to this source electrode drive circuit.
4. LCD according to claim 2 is characterized in that this control circuit is regulated colour signal according to this correction parameter, and this colour signal after will regulating transfers to this source electrode drive circuit.
5. LCD according to claim 2 is characterized in that this liquid crystal panel drive circuit also comprises:
Backlight source driving circuit couples this control circuit and this backlight module, and being used to be subjected to this control circuit to be controlled to be this backlight provides driving voltage;
Wherein, this control circuit is regulated the driving voltage of this backlight source driving circuit according to this correction parameter.
6. LCD according to claim 1 is characterized in that this backlight comprises a plurality of light emitting diodes, and this temperature sensor is close to this light emitting diode setting.
7. a liquid crystal TV set is characterized in that, comprising:
Liquid crystal panel has a plurality of pixels;
Side light type back light module is provided with backlight, is used to this liquid crystal panel that back lighting is provided;
Temperature sensor is arranged in this side light type back light module, is used for the temperature of this backlight of sensing, and the sensing signal of output and this temperature correlation connection; And
Liquid crystal panel drive circuit couples this temperature sensor and this liquid crystal panel, is used for regulating driving voltage in response to this sensing signal, and drives this liquid crystal panel based on this driving voltage after regulating.
8. a backlight module is characterized in that, this backlight module is applicable in a kind of liquid crystal indicator,
This liquid crystal indicator comprises liquid crystal panel with a plurality of pixels and the liquid crystal panel drive circuit that couples this liquid crystal panel, and this backlight module comprises:
Backlight is used to this liquid crystal panel that back lighting is provided; And
Temperature sensor is used for the temperature of this backlight of sensing, and the sensing signal of output and this temperature correlation connection;
Wherein, this liquid crystal panel drive circuit couples this temperature sensor, and it regulates driving voltage in response to this sensing signal, and drives this liquid crystal panel based on this driving voltage after regulating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201322223U CN201654370U (en) | 2009-05-25 | 2009-05-25 | Backlight module, liquid crystal display and liquid crystal television |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201322223U CN201654370U (en) | 2009-05-25 | 2009-05-25 | Backlight module, liquid crystal display and liquid crystal television |
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| CN201654370U true CN201654370U (en) | 2010-11-24 |
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| CN2009201322223U Expired - Fee Related CN201654370U (en) | 2009-05-25 | 2009-05-25 | Backlight module, liquid crystal display and liquid crystal television |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012171238A1 (en) * | 2011-06-16 | 2012-12-20 | 深圳市华星光电技术有限公司 | Circuit and device for improving gamma curve deviation caused by temperature increasing of led |
| CN105023545A (en) * | 2014-04-18 | 2015-11-04 | 全方位数位影像开发股份有限公司 | Self-image correction device and method for liquid crystal display |
| CN105808011A (en) * | 2016-04-12 | 2016-07-27 | 京东方科技集团股份有限公司 | Display device and voltage compensation method thereof |
| CN105869581A (en) * | 2016-06-17 | 2016-08-17 | 武汉华星光电技术有限公司 | Driving circuit of LCD (Liquid Crystal Display) and LCD device |
| CN107705767A (en) * | 2017-10-27 | 2018-02-16 | 苏州佳世达电通有限公司 | Display device and color correcting method |
| CN108091311A (en) * | 2017-12-29 | 2018-05-29 | 武汉华显光电技术有限公司 | Control method, display module, terminal and the storage medium of display module |
| WO2018107650A1 (en) * | 2016-12-15 | 2018-06-21 | 惠科股份有限公司 | Method for correcting and adjusting gamma curve, and display device |
| CN108665858A (en) * | 2018-07-14 | 2018-10-16 | 芜湖益浩昌智能设备有限公司 | A kind of liquid crystal display of adaptive adjustment backlight |
| CN108962164A (en) * | 2018-07-14 | 2018-12-07 | 芜湖益浩昌智能设备有限公司 | A kind of adaptive display brightness adjustment device |
| CN109637496A (en) * | 2019-02-25 | 2019-04-16 | 昆山龙腾光电有限公司 | Liquid crystal display device and its driving method |
| CN110621105A (en) * | 2019-09-23 | 2019-12-27 | 深圳中科维优科技有限公司 | Temperature color drift real-time correction device and method for LED multi-primary-color lamp |
| CN113053326A (en) * | 2021-03-16 | 2021-06-29 | Tcl华星光电技术有限公司 | Backlight driving circuit and display device |
| CN114355649A (en) * | 2021-12-27 | 2022-04-15 | 绵阳惠科光电科技有限公司 | Color temperature compensation device, backlight module and display device |
| CN114743510A (en) * | 2022-04-02 | 2022-07-12 | 上海天马微电子有限公司 | Light-emitting panel and display device |
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2009
- 2009-05-25 CN CN2009201322223U patent/CN201654370U/en not_active Expired - Fee Related
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012171238A1 (en) * | 2011-06-16 | 2012-12-20 | 深圳市华星光电技术有限公司 | Circuit and device for improving gamma curve deviation caused by temperature increasing of led |
| CN105023545A (en) * | 2014-04-18 | 2015-11-04 | 全方位数位影像开发股份有限公司 | Self-image correction device and method for liquid crystal display |
| CN105808011A (en) * | 2016-04-12 | 2016-07-27 | 京东方科技集团股份有限公司 | Display device and voltage compensation method thereof |
| CN105808011B (en) * | 2016-04-12 | 2018-06-15 | 京东方科技集团股份有限公司 | A kind of display device and its voltage compensating method |
| CN105869581A (en) * | 2016-06-17 | 2016-08-17 | 武汉华星光电技术有限公司 | Driving circuit of LCD (Liquid Crystal Display) and LCD device |
| CN105869581B (en) * | 2016-06-17 | 2019-07-05 | 武汉华星光电技术有限公司 | Liquid crystal display drive circuit and liquid crystal display device |
| US10120236B2 (en) | 2016-06-17 | 2018-11-06 | Wuhan China Star Optoelectronics Technology Co., Ltd. | Liquid crystal display driving circuit and liquid crystal display device |
| WO2018107650A1 (en) * | 2016-12-15 | 2018-06-21 | 惠科股份有限公司 | Method for correcting and adjusting gamma curve, and display device |
| CN107705767A (en) * | 2017-10-27 | 2018-02-16 | 苏州佳世达电通有限公司 | Display device and color correcting method |
| CN108091311A (en) * | 2017-12-29 | 2018-05-29 | 武汉华显光电技术有限公司 | Control method, display module, terminal and the storage medium of display module |
| CN108962164A (en) * | 2018-07-14 | 2018-12-07 | 芜湖益浩昌智能设备有限公司 | A kind of adaptive display brightness adjustment device |
| CN108665858A (en) * | 2018-07-14 | 2018-10-16 | 芜湖益浩昌智能设备有限公司 | A kind of liquid crystal display of adaptive adjustment backlight |
| CN109637496A (en) * | 2019-02-25 | 2019-04-16 | 昆山龙腾光电有限公司 | Liquid crystal display device and its driving method |
| CN109637496B (en) * | 2019-02-25 | 2021-08-06 | 昆山龙腾光电股份有限公司 | Liquid crystal display device and driving method thereof |
| CN110621105A (en) * | 2019-09-23 | 2019-12-27 | 深圳中科维优科技有限公司 | Temperature color drift real-time correction device and method for LED multi-primary-color lamp |
| CN110621105B (en) * | 2019-09-23 | 2021-11-09 | 深圳中科维优科技有限公司 | Temperature color drift real-time correction device and method for LED multi-primary-color lamp |
| CN113053326A (en) * | 2021-03-16 | 2021-06-29 | Tcl华星光电技术有限公司 | Backlight driving circuit and display device |
| CN114355649A (en) * | 2021-12-27 | 2022-04-15 | 绵阳惠科光电科技有限公司 | Color temperature compensation device, backlight module and display device |
| CN114355649B (en) * | 2021-12-27 | 2024-01-12 | 绵阳惠科光电科技有限公司 | Color temperature compensation device, backlight module and display device |
| CN114743510A (en) * | 2022-04-02 | 2022-07-12 | 上海天马微电子有限公司 | Light-emitting panel and display device |
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101124 Termination date: 20120525 |