CN105513542B - A kind of backlight drive device and method of liquid crystal display device - Google Patents
A kind of backlight drive device and method of liquid crystal display device Download PDFInfo
- Publication number
- CN105513542B CN105513542B CN201610020935.5A CN201610020935A CN105513542B CN 105513542 B CN105513542 B CN 105513542B CN 201610020935 A CN201610020935 A CN 201610020935A CN 105513542 B CN105513542 B CN 105513542B
- Authority
- CN
- China
- Prior art keywords
- pulse
- picture
- width
- signal
- liquid crystal
- 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.)
- Active
Links
- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 71
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000003079 width control Methods 0.000 claims abstract description 33
- 230000005540 biological transmission Effects 0.000 claims abstract description 7
- 210000001367 artery Anatomy 0.000 claims description 7
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 claims description 7
- 210000003462 vein Anatomy 0.000 claims description 7
- 230000004044 response Effects 0.000 abstract description 21
- 230000003760 hair shine Effects 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 description 5
- 238000005259 measurement Methods 0.000 description 5
- 235000019557 luminance Nutrition 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Classifications
-
- 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
-
- 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
- G09G3/36—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 using liquid crystals
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Liquid Crystal Display Device Control (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The invention discloses a kind of backlight drive device of liquid crystal display device and methods.Wherein, the backlight drive device includes picture input interface, picture detecting module and Pwm controller；Picture input interface is used to receive the display picture of the liquid crystal display device of picture output device transmission, and is sent to picture detecting module；Picture detecting module is connected with picture input interface, for when it is black picture to show picture, the first pulse-width control signal to be sent to Pwm controller；Pwm controller is connected with picture detecting module, and for when receiving first pulse-width control signal, reducing the duty ratio for the pulse-width signal for being sent to backlight module, pulse-width signal is for driving the backlight module to shine.Technical solution provided by the invention is sent to the duty ratio of the pulse-width signal of backlight module when by reducing black picture, control backlight module shines, and reduces the response time of liquid crystal display device.
Description
Technical field
The present invention relates to liquid crystal display device technical field more particularly to a kind of backlight drive devices of liquid crystal display device
And method.
Background technology
Present display generally uses liquid crystal display device, an important indicator of liquid crystal display device to be in response to the time
(Response time, RT).The response time of liquid crystal display device is that each pixel of liquid crystal display device reacts input signal
Speed, i.e. pixel is bright or by bright turn of dark required time by blackout.Response time by the rise time (Rise time) and under
Time (Fall time) composition drops.RT is excessive, when screen switching, can influence the dissipation of picture, forms tail shadow and pulls, influences just
Often display.So the display effect of the smaller liquid crystal display devices of RT is better.
Existing liquid crystal technology is more mature, and the RT of liquid crystal display device is held at a stability number.For example, distortion
The representative value of the response time of nematic (Twisted Nematic, TN) type liquid crystal display device is 10ms, plane conversion (In-
Plane Switching, IPS) type liquid crystal display device response time representative value be 33ms.But due to liquid crystal technology
A bottleneck period has been had evolved to, it is highly difficult to shorten RT.Therefore, the RT specifications of the liquid crystal display device in market are basic
It is consistent, product competition is more and more fierce.
In the prior art, the test of liquid crystal display device response time generally passes through black → white → black (the IPS type liquid of picture
Crystal device) or white → black → white (TN types liquid crystal display device) the switch test response time.
Fig. 1 is the test curve of the response time of present invention IPS types liquid crystal display device in the prior art.Referring to Fig. 1,
For display panel picture by black in vain, the brightness of display panel rises to 90% time interval as T by 10%R.Display panel is drawn
Face drops to 10% time interval as T by white to black, the brightness of display panel by 90%F.When the response of liquid crystal display device
Between T=TR+TF。
Invention content
The present invention provides a kind of backlight drive device of liquid crystal display device and methods, are sent when by reducing black picture
To the duty ratio of the pulse-width signal of backlight module, control backlight module shines, and reduces the response time of liquid crystal display device.
In a first aspect, the present invention provides a kind of backlight drive devices of liquid crystal display device.The backlight drive device,
Including picture input interface, picture detecting module and Pwm controller；
The picture input interface is used to receive the display picture of the liquid crystal display device of picture output device transmission,
And it is sent to the picture detecting module；
The picture detecting module is connected with the picture input interface, for being black picture in the display picture
When, send the first pulse-width control signal to the Pwm controller；
The Pwm controller is connected with the picture detecting module, for receiving first arteries and veins
When width control signal, reduce the duty ratio for the pulse-width signal for being sent to backlight module, the pulse-width signal is for driving
The backlight module is moved to shine.
Further, the backlight drive device further includes that pulse-width signal input port and pulse-width signal are defeated
Exit port；
The pulse-width signal input port is used to receive the first pulse-width signal of signal generation apparatus transmission, and
It is sent to the Pwm controller, and the Pwm controller is receiving first pulse-width controlled
When signal, first pulse-width signal is adjusted to the second pulse-width signal, second pulse-width signal accounts for
Second pulse-width signal is passed through pulse-width signal output port by sky than being less than first pulse-width signal
It is sent to backlight module.
Further, the picture detecting module is additionally operable to when the display picture is non-black picture, wide to pulse
It spends modulation controller and sends the second pulse-width control signal, wherein the Pwm controller is according to second pulsewidth
It controls signal and controls second pulse-width signal and the first pulse-width signal duty ratio having the same.
Further, the duty ratio of second pulse-width signal is more than 0 and is less than 1.
Further, the duty ratio of second pulse-width signal is the duty ratio of first pulse-width signal
40%.
Second aspect, the present invention also provides a kind of backlight driving methods of liquid crystal display device, including：
Picture input interface receives the display picture for the liquid crystal display device that picture output device is sent, and is sent to
Picture detecting module；
The picture detecting module sends the when the display picture is black picture, to Pwm controller
One pulse-width control signal；
For the Pwm controller when receiving first pulse-width control signal, reduction is sent to backlight mould
The duty ratio of the pulse-width signal of group, the pulse-width signal is for driving the backlight module to shine.
Further, the backlight driving method, including：
Pulse-width signal input port receives the first pulse-width signal that signal generation apparatus is sent, and is sent to institute
State Pwm controller, and the Pwm controller is when receiving first pulse-width control signal,
First pulse-width signal is adjusted to the second pulse-width signal, the duty ratio of second pulse-width signal is less than
First pulse-width signal, and second pulse-width signal is sent to the back of the body by pulse-width signal output port
Optical mode group.
Further, the backlight driving method, including：
The picture detecting module is sent when the display picture is non-black picture to Pwm controller
Second pulse-width control signal, wherein the Pwm controller is according to described in second pulse-width control signal control
Second pulse-width signal and the first pulse-width signal duty ratio having the same.
Further, the duty ratio of second pulse-width signal is more than 0 and is less than 1.
Further, the duty ratio of second pulse-width signal is the duty ratio of first pulse-width signal
40%.
Technical solution provided in an embodiment of the present invention receives the liquid crystal that picture output device is sent by picture input interface
The display picture of display device, and be sent to picture detecting module, picture detecting module when it is black picture to show picture, to
Pwm controller sends the first pulse-width control signal, and Pwm controller is receiving the first pulse-width controlled
When signal, the duty ratio of the pulse-width signal of backlight module is sent to when reducing black picture, control backlight module shines, subtracts
The small response time of liquid crystal display device..
Description of the drawings
Fig. 1 is the test curve of the response time of present invention IPS types liquid crystal display device in the prior art；
Fig. 2 is a kind of structural schematic diagram of the backlight drive device for liquid crystal display device that the embodiment of the present invention one provides；
Fig. 3 is a kind of flow chart of the backlight driving method of liquid crystal display device provided by Embodiment 2 of the present invention；
Fig. 4 is a kind of flow chart of the backlight driving method for liquid crystal display device that the embodiment of the present invention three provides.
Specific implementation mode
It is of the invention to reach the technological means and effect that predetermined goal of the invention is taken further to illustrate, below in conjunction with
Attached drawing and preferred embodiment, to the specific implementation mode of the fixed fixture of the liquid crystal display device proposed according to the present invention a kind of,
Structure, feature and its effect are described in detail as after.
Embodiment one
Fig. 2 is a kind of structural schematic diagram of the backlight drive device for liquid crystal display device that the embodiment of the present invention one provides.
The backlight drive device includes picture input interface 10, picture detecting module 11 and Pwm controller 12.
Wherein, picture input interface 10 is used to receive the display picture of the liquid crystal display device of the transmission of picture output device 13
Face, and it is sent to picture detecting module 11；Picture detecting module 11 is connected with picture input interface 10, in display picture
For black picture when, to Pwm controller 12 send the first pulse-width control signal；Pwm controller 12
It is connected with picture detecting module 11, for when receiving the first pulse-width control signal, reducing the arteries and veins for being sent to backlight module
The duty ratio of wide modulated signal, pulse-width signal is for driving the backlight module to shine.
Wherein, picture output device 13 can be notebook personal computer video card or liquid crystal display device in for defeated
Go out to show the device of picture.Picture detecting module 11 and Pwm controller 12 can be integrated in liquid crystal display device
In sequence controller.
Further, backlight drive device further includes pulse-width signal input port and pulse-width signal output end
Mouthful.Wherein, pulse-width signal input port is used to receive the first pulse-width signal of signal generation apparatus transmission, and sends
To Pwm controller 12, and Pwm controller 12 is when receiving first pulse-width control signal,
First pulse-width signal is adjusted to the second pulse-width signal, the duty ratio of second pulse-width signal is less than
First pulse-width signal, and second pulse-width signal is sent to the back of the body by pulse-width signal output port
Optical mode group.For signal generation apparatus for generating the first pulse-width signal, the first pulse-width signal can be high level, also may be used
To be the pulse-width signal with the duty ratio more than 0 and less than 1.
When picture detecting module 11 and Pwm controller 12 are integrated in the sequence controller of liquid crystal display device
When middle, pulse-width signal input port and pulse-width signal output port can also be integrated in sequence controller.
Further, the duty ratio of second pulse-width signal is more than 0 and is less than 1.Wherein, the duty ratio is height
Level shared time ratio in one cycle.Preferably, the duty ratio of the second pulse-width signal is the first pulsewidth modulation
The 40% of the duty ratio of signal.
Further, picture detecting module 11 is additionally operable to when the display picture is non-black picture, to pulse width
Modulation controller 12 sends the second pulse-width control signal, wherein Pwm controller 12 is according to the second pulsewidth control
Signal processed controls second pulse-width signal and the first pulse-width signal duty ratio having the same.
When it is non-black picture to show picture, Pwm controller 12 is according to second pulse-width control signal
Second pulse-width signal and the first pulse-width signal duty ratio having the same are controlled, due to the first pulsewidth tune
Signal processed is high level, i.e., duty ratio is 1, and the duty ratio of the second pulse-width signal is also 1, i.e. the second pulse-width signal exists
It is always high level when showing that picture is non-black picture.
Technical solution provided in an embodiment of the present invention receives the liquid crystal that picture output device is sent by picture input interface
The display picture of display device, and be sent to picture detecting module, picture detecting module when it is black picture to show picture, to
Pwm controller sends the first pulse-width control signal, and Pwm controller is receiving the first pulse-width controlled
When signal, the duty ratio of the pulse-width signal of backlight module is sent to when reducing black picture, control backlight module shines, reduces
Response time of liquid crystal display device.
In addition, the embodiment of the present invention additionally provides a kind of liquid crystal display device.The liquid crystal display device, including liquid crystal
Show any backlight drive device in module, backlight module, picture output device and above-described embodiment one.
Embodiment two
Fig. 3 is a kind of flow chart of the backlight driving method of liquid crystal display device provided by Embodiment 2 of the present invention.It is described
Backlight driving method includes specifically including：
S210, picture input interface receive the display picture for the liquid crystal display device that picture output device is sent, and
It is sent to picture detecting module.
Wherein, display picture may include black picture and non-black picture.
S220, the picture detecting module are when the display picture is black picture, to Pwm controller
Send the first pulse-width control signal.
When receiving first pulse-width control signal, reduction is sent to for S230, the Pwm controller
The duty ratio of the pulse-width signal of backlight module, the pulse-width signal is for driving the backlight module to shine.
Pwm controller is after receiving first pulse-width control signal, according to the first pulsewidth control
Signal processed reduces the duty ratio for the pulse-width signal for being sent to backlight module.
Technical solution provided in an embodiment of the present invention receives the liquid crystal that picture output device is sent by picture input interface
The display picture of display device, and be sent to picture detecting module, picture detecting module when it is black picture to show picture, to
Pwm controller sends the first pulse-width control signal, and Pwm controller is receiving the first pulse-width controlled
When signal, the duty ratio of the pulse-width signal of backlight module is sent to when reducing black picture, control backlight module shines, reduces
Response time of liquid crystal display device.
Embodiment three
Fig. 4 is a kind of flow chart of the backlight driving method for liquid crystal display device that the embodiment of the present invention three provides.Referring to
The backlight driving method of Fig. 4, the liquid crystal display device specifically include：
S310, picture input interface receive the display picture for the liquid crystal display device that picture output device is sent, and
It is sent to picture detecting module.
S320, the picture detecting module judge whether the display picture is black picture, if so, executing step
S330；Otherwise, step S350 is executed.
S330, picture detecting module send the first pulse-width control signal to Pwm controller.
S340, pulse-width signal input port receive the first pulse-width signal that signal generation apparatus is sent, concurrently
Pwm controller is given, and Pwm controller is incited somebody to action when receiving first pulse-width control signal
First pulse-width signal is adjusted to the second pulse-width signal, and the duty ratio of second pulse-width signal is less than institute
The first pulse-width signal is stated, step S360 is executed.
Further, first pulse-width signal can be high level, can also be that duty ratio is more than 0 and is less than 1
Pulse-width signal.Further, the duty ratio of second pulse-width signal is more than 0 and is less than 1.Preferably, described
The duty ratio of second pulse-width signal is the 40% of the duty ratio of first pulse-width signal.
S350, picture detecting module send the second pulse-width control signal to Pwm controller, wherein the arteries and veins
It rushes width modulation controller and second pulse-width signal and first arteries and veins is controlled according to second pulse-width control signal
Wide modulated signal duty ratio having the same.
S360.Second pulse-width signal is sent to backlight module by pulse-width signal output port.
By taking the IPS type liquid crystal display devices of 11.6 cun of backlight modules as an example, drawn by black picture → white picture → black
The response time of the handoff procedure test liquid crystal display device in face.Wherein, the first pulse-width signal is high level, the second pulsewidth
The duty ratio of modulated signal is the 40% of the duty ratio of the first pulse-width signal.In test process, using German DMS series
Optical property measurement system, R2D luminance meters and BM5A chroma luminances meter measure IPS types liquid crystal display device and are increasing black picture respectively
Face detecting function and do not increase response time in the case of two kinds of black picture detecting function, specific measurement data is with reference to being shown in Table
1。
Table 1
In table 1, each metric data is the average value of multiple metric data, the brightness of the display panel of liquid crystal display device
100% is risen to from 0%, by black in vain, the brightness of display panel is risen to by 10% between 90% time display panel picture
It is divided into TR, the brightness of the display panel of liquid crystal display device drops to 0% from 100%, and display panel picture is by white to black, display
The time interval that the brightness of panel drops to 10% by 90% is TF.The response time T=T of liquid crystal display deviceR+TF.Wherein,
DMS, R2D and BM5A indicate the optical property measurement system, R2D luminance meters and BM5A chroma luminance meters of Germany's DMS series respectively.
By specific data in table 1 it is found that after increasing black picture detecting function, DMS metric data averagely reduces
8.75ms, R2D metric data averagely reduce 9.49ms, and BM5A metric data averagely reduces 11.3ms, above-mentioned three kinds of measurements
The mean value that the measurement data of tool averagely reduces is 9.84ms.The arteries and veins of backlight module is sent to when therefore, by reducing black picture
The duty ratio of wide modulated signal, control backlight module shine, and can efficiently reduce the response time of liquid crystal display device.
Technical solution provided in an embodiment of the present invention receives the liquid crystal that picture output device is sent by picture input interface
The display picture of display device, and be sent to picture detecting module, picture detecting module when it is black picture to show picture, to
Pwm controller sends the first pulse-width control signal, and Pwm controller is receiving the first pulse-width controlled
When signal, the duty ratio of the pulse-width signal of backlight module is sent to when reducing black picture, control backlight module shines, reduces
Response time of liquid crystal display device.
The above described is only a preferred embodiment of the present invention, be not intended to limit the present invention in any form, though
So the present invention has been disclosed as a preferred embodiment, and however, it is not intended to limit the invention, any technology people for being familiar with this profession
Member, without departing from the scope of the present invention, when the technology contents using the disclosure above make a little change or modification
For the equivalent embodiment of equivalent variations, as long as be without departing from technical solution of the present invention content, it is right according to the technical essence of the invention
Any simple modification, equivalent change and modification made by above example, in the range of still falling within technical solution of the present invention.
Claims (8)
1. a kind of backlight drive device of liquid crystal display device, which is characterized in that detect mould including picture input interface, picture
Block, Pwm controller, pulse-width signal input port and pulse-width signal output port；
The picture input interface is used to receive the display picture of the liquid crystal display device of picture output device transmission, and is sent to
The picture detecting module；
The picture detecting module is connected with the picture input interface, is used for when the display picture is black picture,
The first pulse-width control signal is sent to the Pwm controller；
The pulse-width signal input port is used to receive the first pulse-width signal of signal generation apparatus transmission, and sends
To the Pwm controller, and the Pwm controller is receiving first pulse-width control signal
When, first pulse-width signal is adjusted to the second pulse-width signal, the duty ratio of second pulse-width signal
It is sent by pulse-width signal output port less than first pulse-width signal, and by second pulse-width signal
To backlight module for driving the backlight module to shine.
2. the backlight drive device of liquid crystal display device according to claim 1, which is characterized in that the picture detects mould
Block is additionally operable to when the display picture is non-black picture, and the second pulse-width controlled letter is sent to Pwm controller
Number, wherein the Pwm controller controls second pulsewidth modulation according to second pulse-width control signal to be believed
Number with the first pulse-width signal duty ratio having the same.
3. the backlight drive device of liquid crystal display device according to claim 1, which is characterized in that the second pulsewidth tune
The duty ratio of signal processed is more than 0 and is less than 1.
4. the backlight drive device of liquid crystal display device according to claim 3, which is characterized in that the second pulsewidth tune
The duty ratio of signal processed is the 40% of the duty ratio of first pulse-width signal.
5. a kind of backlight driving method of liquid crystal display device, which is characterized in that including：
Picture input interface receives the display picture for the liquid crystal display device that picture output device is sent, and is sent to picture detecting
Module；
The picture detecting module sends the first arteries and veins when the display picture is black picture, to Pwm controller
Width control signal；
Pulse-width signal input port receives the first pulse-width signal that signal generation apparatus is sent, and is sent to the arteries and veins
Width modulation controller is rushed, the Pwm controller, will be described when receiving first pulse-width control signal
First pulse-width signal is adjusted to the second pulse-width signal, and the duty ratio of second pulse-width signal is less than described the
One pulse-width signal, and second pulse-width signal is sent to backlight module by pulse-width signal output port
For driving the backlight module to shine.
6. the backlight driving method of liquid crystal display device according to claim 5, which is characterized in that including：
The picture detecting module sends second when the display picture is non-black picture, to Pwm controller
Pulse-width control signal, wherein the Pwm controller controls described second according to second pulse-width control signal
Pulse-width signal and the first pulse-width signal duty ratio having the same.
7. the backlight driving method of liquid crystal display device according to claim 5, which is characterized in that the second pulsewidth tune
The duty ratio of signal processed is more than 0 and is less than 1.
8. the backlight driving method of liquid crystal display device according to claim 7, which is characterized in that the second pulsewidth tune
The duty ratio of signal processed is the 40% of the duty ratio of first pulse-width signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610020935.5A CN105513542B (en) | 2016-01-13 | 2016-01-13 | A kind of backlight drive device and method of liquid crystal display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610020935.5A CN105513542B (en) | 2016-01-13 | 2016-01-13 | A kind of backlight drive device and method of liquid crystal display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105513542A CN105513542A (en) | 2016-04-20 |
| CN105513542B true CN105513542B (en) | 2018-07-24 |
Family
ID=55721474
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610020935.5A Active CN105513542B (en) | 2016-01-13 | 2016-01-13 | A kind of backlight drive device and method of liquid crystal display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105513542B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107146582B (en) * | 2017-06-14 | 2019-09-13 | 昆山龙腾光电有限公司 | Backlight driver and its driving method |
| CN107342058B (en) * | 2017-08-30 | 2020-04-14 | 创维液晶器件(深圳)有限公司 | Method, test board, system and equipment for adjusting brightness of liquid crystal display module |
| CN108182916A (en) * | 2018-01-02 | 2018-06-19 | 昆山龙腾光电有限公司 | Driving circuit and driving method |
| CN111223457B (en) * | 2019-11-06 | 2023-06-30 | 昆山龙腾光电股份有限公司 | Backlight driving circuit and display device |
| WO2022041074A1 (en) * | 2020-08-27 | 2022-03-03 | 南京英维尔科技服务有限公司 | Backlight apparatus control system for head-mounted device, and terminal |
| CN113327559B (en) * | 2021-06-08 | 2023-03-24 | 昆山龙腾光电股份有限公司 | Control system, control method and display device |
| CN117253455A (en) * | 2023-07-21 | 2023-12-19 | 北京显芯科技有限公司 | Data processing method, display device and display |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101630494A (en) * | 2009-08-19 | 2010-01-20 | 福建捷联电子有限公司 | Method for improving dynamic contrast ratio of liquid crystal display |
| CN101739992A (en) * | 2009-12-05 | 2010-06-16 | 福建捷联电子有限公司 | Method for improving dynamic contrast ratio of liquid crystal display by altering pulse width modulation frequency |
| CN102306484A (en) * | 2011-08-31 | 2012-01-04 | 福州华映视讯有限公司 | Control circuit generating backlight drive current and method thereof |
| CN105161040A (en) * | 2015-10-29 | 2015-12-16 | 小米科技有限责任公司 | Method and device for adjusting backlight intensity |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101295472B (en) * | 2007-04-24 | 2010-10-06 | 北京京东方光电科技有限公司 | LCD device high dynamic contrast processing equipment and method |
| CN101393727B (en) * | 2007-09-21 | 2011-07-20 | 北京京东方光电科技有限公司 | Highly dynamic contrast processing apparatus and method for LCD device |
-
2016
- 2016-01-13 CN CN201610020935.5A patent/CN105513542B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101630494A (en) * | 2009-08-19 | 2010-01-20 | 福建捷联电子有限公司 | Method for improving dynamic contrast ratio of liquid crystal display |
| CN101739992A (en) * | 2009-12-05 | 2010-06-16 | 福建捷联电子有限公司 | Method for improving dynamic contrast ratio of liquid crystal display by altering pulse width modulation frequency |
| CN102306484A (en) * | 2011-08-31 | 2012-01-04 | 福州华映视讯有限公司 | Control circuit generating backlight drive current and method thereof |
| CN105161040A (en) * | 2015-10-29 | 2015-12-16 | 小米科技有限责任公司 | Method and device for adjusting backlight intensity |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105513542A (en) | 2016-04-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105513542B (en) | A kind of backlight drive device and method of liquid crystal display device | |
| US11087705B2 (en) | Driving circuitry and method of display panel and display device | |
| CN106297674B (en) | A kind of backlight brightness control method, device and display equipment | |
| CN101673520B (en) | Liquid crystal display (LCD) device and image signal processing method | |
| CN100592373C (en) | Liquid crystal panel drive device and its drive method | |
| CN101188098B (en) | Display driver circuit | |
| WO2017113343A1 (en) | Method for adjusting backlight brightness and terminal | |
| CN104200782B (en) | A kind of method of stabilizing liquid crystal display backlight high brightness | |
| US20180090077A1 (en) | Liquid crystal display apparatus and backlight control method thereof | |
| CN101089941A (en) | Display apparatus and control method thereof | |
| US9024931B2 (en) | Power-saving mechanism of display and control method using the same | |
| CN101271674A (en) | Liquid crystal display device and method of driving the same | |
| US9484000B2 (en) | Signal conversion method for display image | |
| CN101261821A (en) | Gamma curve compensation method, gamma curve compensation circuit and display system | |
| CN105047144A (en) | Liquid crystal display device and backlight control method thereof | |
| CN109147689A (en) | The method of adjustment of liquid crystal display and its gamma curve | |
| CN113823233A (en) | Display device and control method thereof | |
| CN106228940B (en) | Eliminate the method and system of band | |
| CN103810980A (en) | Image occurrence frequency based liquid crystal display power consumption reducing method | |
| CN102903337A (en) | Liquid crystal display as well as control method and device thereof | |
| CN104751824B (en) | Show equipment, multi-display apparatus and its driving method including the display equipment | |
| CN102750914B (en) | Display module driving circuit, driving method and liquid crystal television | |
| US20210349355A1 (en) | Systems and methods for generating an overdrive look-up table (lut) for response time compensation of a display device | |
| WO2014048000A1 (en) | Driving method for liquid crystal display device and driving system thereof | |
| CN105551417A (en) | Liquid crystal display with function of visible light communication |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 215301, 1, Longteng Road, Kunshan, Jiangsu, Suzhou Patentee after: InfoVision Optoelectronics(Kunshan)Co.,Ltd. Address before: 215301, 1, Longteng Road, Kunshan, Jiangsu, Suzhou Patentee before: INFOVISION OPTOELECTRONICS (KUNSHAN) Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |