CN103943088B - A kind of gamma electric voltage regulating device of display panel and display device - Google Patents
A kind of gamma electric voltage regulating device of display panel and display device Download PDFInfo
- Publication number
- CN103943088B CN103943088B CN201410145290.9A CN201410145290A CN103943088B CN 103943088 B CN103943088 B CN 103943088B CN 201410145290 A CN201410145290 A CN 201410145290A CN 103943088 B CN103943088 B CN 103943088B
- Authority
- CN
- China
- Prior art keywords
- voltage
- gamma
- electric voltage
- gamma electric
- display panel
- 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
Abstract
The invention discloses a kind of gamma electric voltage regulating device and display device of display panel, due to for each viewing area of display panel, translational adjustment can be carried out according to the voltage shifts range value preset to gamma electric voltage regulating circuit and generating target gamma electric voltage.Therefore, for multiple viewing areas that Vcom voltage in large scale display panel is inconsistent, the gamma electric voltage of each viewing area can be regulated respectively to reach target gamma electric voltage according to the voltage shifts range value preset, thus reduce due to the uneven problem of display frame that Vcom voltage is uneven caused.
Description
Technical field
The present invention relates to display technique field, espespecially a kind of gamma electric voltage regulating device of display panel and display device.
Background technology
The effect of gamma (Gamma) voltage generation circuit is that the gamma curve required by liquid crystal display sets Gamma voltage, carries out the voltage of gray scale display as Thin Film Transistor-LCD.The digital signal that time schedule controller produces is converted to the simulating signal of corresponding gray scale voltage and is input on display panels by each Gamma voltage under the effect of the digital to analog converter of Source drive.
The gray scale voltage that liquid crystal display is inputted by Source drive and public (Vcom) voltage realize image display, and gray scale voltage determines primarily of Gamma voltage and corresponding GTG bit bit, GTG Bit is fixed value, want to change gray scale voltage only to change Gamma voltage, therefore, once the Gamma voltage of liquid crystal display and Vcom voltage are fixed, mean that the display effect of the whole screen of liquid crystal display just secures.But in large-sized liquid crystal display, certainly exist the phenomenon that Vcom voltage's distribiuting is uneven, and the uneven quality that will inevitably affect the display frame of liquid crystal display of Vcom voltage's distribiuting, liquid crystal display is occurred, and picture shows uneven phenomenon.
Summary of the invention
Embodiments provide a kind of gamma electric voltage regulating device and display device of display panel, show uneven problem in order to solve large-sized display panel due to the picture that common electric voltage skewness produces.
The gamma electric voltage regulating device of a kind of display panel that the embodiment of the present invention provides, described display panel is divided at least two viewing areas, described gamma electric voltage regulating device comprises: with each viewing area Source drive one to one of described display panel, and for providing the gamma electric voltage regulating circuit of target gamma electric voltage to each described Source drive; Wherein,
Described target gamma electric voltage is that described gamma electric voltage regulating circuit carries out generating after voltage shifts regulates according to the voltage shifts range value preset.
The above-mentioned gamma electric voltage regulating device that the embodiment of the present invention provides, owing to for each viewing area of display panel, can carry out translational adjustment according to the voltage shifts range value preset to gamma electric voltage regulating circuit and generating target gamma electric voltage.Therefore, for multiple viewing areas that Vcom voltage in large scale display panel is inconsistent, the gamma electric voltage of each viewing area can be regulated respectively to reach target gamma electric voltage according to the voltage shifts range value preset, thus reduce due to the uneven problem of display frame that Vcom voltage is uneven caused.
Preferably, for the ease of implementing, in the above-mentioned gamma electric voltage regulating device that the embodiment of the present invention provides, described gamma electric voltage regulating circuit specifically comprises: with each described Source drive the first gamma voltage generation circuit one to one, and with each described first gamma voltage generation circuit voltage shifts control circuit one to one; Wherein,
Described first gamma voltage generation circuit of voltage shifts range value to correspondence that described voltage shifts control circuit is used for according to presetting carries out voltage shifts adjustment, makes described first gamma voltage generation circuit generate target gamma electric voltage;
Described first gamma voltage generation circuit is used for generating target gamma electric voltage under the adjustment of the described voltage shifts control circuit of correspondence, and described target gamma electric voltage is outputted to corresponding described Source drive.
Preferably, for the ease of implementing, in the above-mentioned gamma electric voltage regulating device that the embodiment of the present invention provides, each described first gamma voltage generation circuit specifically comprises: the resistance string be made up of the resistance unit of multiple series connection, and between two often adjacent resistance units one for exporting the voltage output end of target gamma electric voltage;
Each described voltage shifts control circuit specifically comprises: for providing the first constant current source of steady current for multiple resistance units of series connection, to be connected between one end of the resistance string of corresponding described first gamma voltage generation circuit and described first constant current source and adjustable the first resistance unit of resistance value, and to be connected between the other end of resistance string of corresponding described first gamma voltage generation circuit and earth terminal and adjustable the second resistance unit of resistance value.
Preferably, for the ease of implementing, in the above-mentioned gamma electric voltage regulating device that the embodiment of the present invention provides, described gamma electric voltage regulating circuit specifically comprises: the second gamma voltage generation circuit, with each described Source drive gamma electric voltage translation circuit one to one; Wherein,
Described second gamma voltage generation circuit, provides initial gamma voltage for the described gamma electric voltage translation circuit to correspondence;
Described gamma electric voltage translation circuit is for receiving described initial gamma voltage, according to described default voltage shifts range value, voltage shifts is carried out to described initial gamma voltage and regulate the target gamma electric voltage generating correspondence, and described target gamma electric voltage is outputted to corresponding described Source drive.
Preferably, for the ease of implementing, in the above-mentioned gamma electric voltage regulating device that the embodiment of the present invention provides, described second gamma voltage generation circuit and described gamma electric voltage translation circuit one_to_one corresponding.
Or, preferably, for the ease of implementing, in the above-mentioned gamma electric voltage regulating device that the embodiment of the present invention provides, the corresponding each described gamma electric voltage translation circuit of described second gamma voltage generation circuit.
Preferably, for the ease of implementing, in the above-mentioned gamma electric voltage regulating device that the embodiment of the present invention provides, described second gamma voltage generation circuit specifically comprises: the resistance string be made up of the resistance unit of multiple series connection, for providing the second constant current source of steady current for described resistance string, and between two often adjacent resistance units one for exporting the voltage output end of initial gamma voltage; Wherein,
One end of the resistance string of described second gamma voltage generation circuit is connected with described second constant current source, the other end ground connection of the resistance string of described second gamma voltage generation circuit.
Preferably, for the ease of implementing, in the above-mentioned gamma electric voltage regulating device that the embodiment of the present invention provides, each described gamma electric voltage translation circuit specifically comprises: with the voltage output end gamma electric voltage translation one to one electronic circuit of corresponding described second gamma voltage generation circuit;
Each described gamma electric voltage translation electronic circuit specifically comprises: amplifier, the first resistance unit that resistance is adjustable and adjustable the second resistance unit of resistance; Wherein,
Described first resistance unit one end ground connection, the other end is connected with described second resistance unit one end with the negative signal input part of described amplifier; The positive signal input part of described amplifier is connected with the voltage output end of corresponding described second gamma voltage generation circuit, and the signal output part of described amplifier is connected with the other end of corresponding Source drive with described second resistance unit.
A kind of display device that the embodiment of the present invention provides, comprise display panel, described display panel is divided at least two viewing areas, and described display device also comprises the gamma electric voltage regulating device of any one display panel above-mentioned that the embodiment of the present invention provides.
Accompanying drawing explanation
The structural representation of the gamma electric voltage regulating device that Fig. 1 provides for the embodiment of the present invention;
One of structural representation of the gamma electric voltage regulating circuit that Fig. 2 provides for the embodiment of the present invention;
The structural representation two of the gamma electric voltage regulating circuit that Fig. 3 provides for the embodiment of the present invention;
The structural representation three of the gamma electric voltage regulating circuit that Fig. 4 provides for the embodiment of the present invention;
The structural representation four of the gamma electric voltage regulating circuit that Fig. 5 a provides for the embodiment of the present invention;
The structural representation five of the gamma electric voltage regulating circuit that Fig. 5 b provides for the embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the gamma electric voltage regulating device of the display panel that the embodiment of the present invention provides and the embodiment of display device are described in detail.
The gamma electric voltage regulating device of a kind of display panel that the embodiment of the present invention provides, as shown in Figure 1, display panel is divided at least two viewing areas 100, gamma electric voltage regulating device comprises: with each viewing area 100 Source drive 200 one to one of display panel, and for providing the gamma electric voltage regulating circuit 300 of target gamma electric voltage to each Source drive 200; Wherein,
This target gamma electric voltage is that gamma electric voltage regulating circuit 300 carries out generating after voltage shifts regulates according to the voltage shifts range value preset.
The above-mentioned gamma electric voltage regulating device that the embodiment of the present invention provides, owing to for each viewing area of display panel, can carry out translational adjustment according to the voltage shifts range value preset to gamma electric voltage regulating circuit and generating target gamma electric voltage.Therefore, for multiple viewing areas that Vcom voltage in large scale display panel is inconsistent, the gamma electric voltage of each viewing area can be regulated respectively to reach target gamma electric voltage according to the voltage shifts range value preset, thus reduce due to the uneven problem of display frame that Vcom voltage is uneven caused.
It should be noted that, in the specific implementation, the above-mentioned gamma electric voltage regulating device that the embodiment of the present invention provides, according to the homogeneity of Vcom voltage in display panel, display panel can be divided into multiple viewing area, in general display panel, the homogeneity of Vcom voltage is poorer, needs the number of the viewing area divided also more.Particularly, the number of the viewing area of division can determine according to actual conditions.The above-mentioned gamma electric voltage regulating device that theres is provided of the embodiment of the present invention for convenience of explanation, Fig. 1, Fig. 2 and Fig. 4 are all divided into 4 viewing areas for display panel and are described.
Particularly, in the specific implementation, the voltage shifts range value preset can obtain in advance by experiment.Particularly, with the common electric voltage of one of them viewing area of display panel for benchmark common electric voltage, the common electric voltage of other viewing area in display panel and benchmark common electric voltage are compared, according to the voltage difference between the common electric voltage of other viewing area and benchmark common electric voltage, voltage shifts range value required when the gamma electric voltage be applied on the Source drive corresponding with other viewing area will reach target gamma electric voltage (gamma electric voltage value corresponding when namely the flicker of whole display panel reaches minimum) can be obtained, the voltage shifts range value of this voltage shifts range value just for presetting.Like this except common service message pressure is chosen for the viewing area of benchmark common electric voltage, other viewing areas of display panel, respectively the voltage shifts range value preset of corresponding.
Or, in the specific implementation, also a benchmark common electric voltage can be set, the common electric voltage of each viewing area of display panel is compared with benchmark common electric voltage respectively, according to the common electric voltage of each viewing area and the voltage difference of benchmark common electric voltage, obtain voltage shifts range value required when the gamma electric voltage be applied on the Source drive corresponding with each viewing area will reach target gamma electric voltage (gamma electric voltage value corresponding when namely the flicker of whole display panel reaches minimum), the voltage shifts range value of this voltage shifts range value just for presetting.Each viewing area of such display panel, respectively the voltage shifts range value preset of corresponding.
Preferably, in the above-mentioned gamma electric voltage regulating device that the embodiment of the present invention provides, as shown in Figure 2, gamma electric voltage regulating circuit 300 specifically comprises: with each Source drive 200 first gamma voltage generation circuit 310 one to one, and with each first gamma voltage generation circuit 310 voltage shifts control circuit 320 one to one; Wherein,
Voltage shifts control circuit 320, for carrying out voltage shifts adjustment according to first gamma voltage generation circuit 310 of voltage shifts range value to correspondence preset, makes the first gamma voltage generation circuit 310 generate target gamma electric voltage;
Target gamma electric voltage for generating target gamma electric voltage under the adjustment of the voltage shifts control circuit 320 of correspondence, and is outputted to corresponding Source drive 200 by the first gamma voltage generation circuit 310.
Preferably, in the above-mentioned gamma electric voltage regulating device that the embodiment of the present invention provides, as shown in Figure 3, each first gamma voltage generation circuit 310 specifically comprises: the resistance string be made up of the resistance unit R of multiple series connection, and between two often adjacent resistance unit R one for exporting the voltage output end 311 of target gamma electric voltage;
Each voltage shifts control circuit 320 specifically comprises: for providing the first constant current source 321 of steady current for multiple resistance unit R of series connection, to be connected between one end of the resistance string of the first corresponding gamma voltage generation circuit 310 and the first constant current source 321 and adjustable the first resistance unit R1 of resistance value, and to be connected between the other end of resistance string of the first corresponding gamma voltage generation circuit 310 and earth terminal GND and adjustable the second resistance unit R2 of resistance value.
Or, preferably, in the above-mentioned gamma electric voltage regulating device that the embodiment of the present invention provides, as shown in Figure 4, gamma electric voltage regulating circuit specifically comprises: the second gamma voltage generation circuit 330, and with each Source drive 200 gamma electric voltage translation circuit 340 one to one; Wherein,
Second gamma voltage generation circuit 330, provides initial gamma voltage for the gamma electric voltage translation circuit 340 to correspondence;
Gamma electric voltage translation circuit 340, for receiving initial gamma voltage, carries out voltage shifts according to the voltage shifts range value preset to initial gamma voltage and regulates the target gamma electric voltage generating correspondence, and target gamma electric voltage is outputted to corresponding Source drive 200.
Preferably, in the above-mentioned gamma electric voltage regulating device that the embodiment of the present invention provides, as shown in Figure 5 a, the second gamma voltage generation circuit 330 can with gamma electric voltage translation circuit 340 one_to_one corresponding, i.e. corresponding second gamma voltage generation circuit 330 of gamma electric voltage translation circuit 340.
Certainly, in the specific implementation, in the above-mentioned gamma electric voltage regulating device that the embodiment of the present invention provides, as shown in Figure 5 b, second gamma voltage generation circuit 330 also can corresponding each gamma electric voltage translation circuit 340, and namely the second gamma voltage generation circuit 330 provides initial gamma voltage respectively to each gamma electric voltage translation circuit 340.
Preferably, in the above-mentioned gamma electric voltage regulating device that the embodiment of the present invention provides, as shown in figure 5a and 5b, second gamma voltage generation circuit 330 specifically comprises: the resistance string be made up of the resistance unit R of multiple series connection, for providing the second constant current source 331 of steady current for resistance string, and between two often adjacent resistance unit R one for exporting the voltage output end 332 of initial gamma voltage; Wherein,
One end of the resistance string of the second gamma voltage generation circuit 330 is connected 331 with the second constant current source, the other end ground connection of the resistance string of the second corresponding gamma voltage generation circuit 330.
Further, in the above-mentioned gamma electric voltage regulating device that the embodiment of the present invention provides, as shown in figure 5a and 5b, each gamma electric voltage translation circuit 340 specifically comprises: with the voltage output end 332 gamma electric voltage translation one to one electronic circuit 341 of the second corresponding gamma voltage generation circuit 330;
Each gamma electric voltage translation electronic circuit 341 specifically comprises: amplifier 3410, the first resistance unit R1 that resistance is adjustable and adjustable the second resistance unit R2 of resistance; Wherein,
First resistance unit R1 one end ground connection GND, the other end is connected with one end of the second resistance unit R2 with the negative signal input part 3411 of amplifier 3410; The positive signal input part 3412 of amplifier 3410 is connected with the voltage output end 332 of the second corresponding gamma voltage generation circuit 330, and the signal output part 3413 of amplifier 3410 is connected with the other end of corresponding Source drive 200 with the second resistance unit R2.
Based on same inventive concept, the embodiment of the present invention additionally provides a kind of display device, comprise display panel, display panel is divided at least two viewing areas, and display device also comprises the gamma electric voltage regulating device of any one display panel above-mentioned that the embodiment of the present invention provides.This display device can be: any product or parts with Presentation Function such as mobile phone, panel computer, televisor, display, notebook computer, digital album (digital photo frame), navigating instrument.The enforcement of this display device see the embodiment of the gamma electric voltage regulating device of above-mentioned display panel, can repeat part and repeats no more.
The gamma electric voltage regulating device of a kind of display panel that the embodiment of the present invention provides and display device, due to for each viewing area of display panel, translational adjustment can be carried out according to the voltage shifts range value preset to gamma electric voltage regulating circuit and generating target gamma electric voltage.Therefore, for multiple viewing areas that Vcom voltage in large scale display panel is inconsistent, the gamma electric voltage of each viewing area can be regulated respectively to reach target gamma electric voltage according to the voltage shifts range value preset, thus reduce due to the uneven problem of display frame that Vcom voltage is uneven caused.
Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (2)
1. the gamma electric voltage regulating device of a display panel, it is characterized in that, described display panel is divided at least two viewing areas, described gamma electric voltage regulating device comprises: with each viewing area Source drive one to one of described display panel, and for providing the gamma electric voltage regulating circuit of target gamma electric voltage to each described Source drive; Wherein,
Described target gamma electric voltage is that described gamma electric voltage regulating circuit carries out generating after voltage shifts regulates according to the voltage shifts range value preset;
Described gamma electric voltage regulating circuit specifically comprises: with each described Source drive the first gamma voltage generation circuit one to one, and with each described first gamma voltage generation circuit voltage shifts control circuit one to one; Wherein, described first gamma voltage generation circuit of voltage shifts range value to correspondence that described voltage shifts control circuit is used for according to presetting carries out voltage shifts adjustment, makes described first gamma voltage generation circuit generate target gamma electric voltage; Described first gamma voltage generation circuit is used for generating target gamma electric voltage under the adjustment of the described voltage shifts control circuit of correspondence, and described target gamma electric voltage is outputted to corresponding described Source drive;
Each described first gamma voltage generation circuit specifically comprises: the resistance string be made up of the resistance unit of multiple series connection, and between two often adjacent resistance units one for exporting the voltage output end of target gamma electric voltage;
Each described voltage shifts control circuit specifically comprises: for providing the first constant current source of steady current for multiple resistance units of series connection, to be connected between one end of the resistance string of corresponding described first gamma voltage generation circuit and described first constant current source and adjustable the first resistance unit of resistance value, and to be connected between the other end of resistance string of corresponding described first gamma voltage generation circuit and earth terminal and adjustable the second resistance unit of resistance value.
2. a display device, is characterized in that, comprises display panel, and described display panel is divided at least two viewing areas, and described display device also comprises the gamma electric voltage regulating device of display panel as claimed in claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410145290.9A CN103943088B (en) | 2014-04-11 | 2014-04-11 | A kind of gamma electric voltage regulating device of display panel and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410145290.9A CN103943088B (en) | 2014-04-11 | 2014-04-11 | A kind of gamma electric voltage regulating device of display panel and display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103943088A CN103943088A (en) | 2014-07-23 |
| CN103943088B true CN103943088B (en) | 2016-04-06 |
Family
ID=51190725
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410145290.9A Active CN103943088B (en) | 2014-04-11 | 2014-04-11 | A kind of gamma electric voltage regulating device of display panel and display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103943088B (en) |
Families Citing this family (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104157251B (en) * | 2014-07-25 | 2016-06-01 | 京东方科技集团股份有限公司 | A kind of gamma voltage control method, gamma voltage setting device and display unit |
| CN104347048B (en) * | 2014-11-21 | 2016-08-03 | 深圳市华星光电技术有限公司 | Display panels and gray scale voltage compensation method thereof |
| CN104376829A (en) * | 2014-12-11 | 2015-02-25 | 京东方科技集团股份有限公司 | Display substrate driving device and method and display device |
| TWI560689B (en) * | 2015-05-05 | 2016-12-01 | Au Optronics Corp | Common voltage generating circuit and displaying apparatus using the same |
| CN105096896B (en) * | 2015-09-18 | 2017-11-21 | 京东方科技集团股份有限公司 | Gamma electric voltage adjusting method and device |
| CN105388646B (en) | 2015-12-14 | 2019-02-12 | 深圳市华星光电技术有限公司 | The color offset compensating method of liquid crystal display and liquid crystal display |
| CN106023916B (en) | 2016-06-08 | 2018-08-31 | 深圳市华星光电技术有限公司 | Gamma-corrected system and method |
| KR102510046B1 (en) * | 2016-07-18 | 2023-03-15 | 삼성전자주식회사 | Display apparatus and controlling method of thereof |
| CN106356032B (en) * | 2016-11-15 | 2019-03-12 | 武汉华星光电技术有限公司 | Gamma-correction circuit and its operating method |
| CN108665861B (en) * | 2017-03-31 | 2021-01-26 | 京东方科技集团股份有限公司 | Display driving device, display driving method and display device |
| CN107492358B (en) * | 2017-09-14 | 2020-02-21 | 京东方科技集团股份有限公司 | Gamma reference voltage generation circuit and generation method thereof |
| CN111201563A (en) * | 2017-12-29 | 2020-05-26 | 深圳市柔宇科技有限公司 | Gamma voltage generation circuit, generation method and display panel |
| CN110400532A (en) * | 2018-04-25 | 2019-11-01 | 咸阳彩虹光电科技有限公司 | A kind of method and apparatus of quick adjustment gamma voltage |
| US10796634B2 (en) | 2018-07-30 | 2020-10-06 | Shenzhen China Star Optoelectronics Semiconductor Display Technology Co. , Ltd. | Display control circuit, method and panel display device |
| CN109147686B (en) * | 2018-07-30 | 2020-05-19 | 深圳市华星光电半导体显示技术有限公司 | Display control circuit and method and flat panel display device |
| CN109389920A (en) * | 2018-10-23 | 2019-02-26 | 惠科股份有限公司 | Detection method, gamma chip and the computer readable storage medium of gamma electric voltage value |
| CN109346025A (en) * | 2018-12-18 | 2019-02-15 | 深圳市华星光电半导体显示技术有限公司 | Liquid crystal display device |
| CN109559696B (en) * | 2018-12-24 | 2021-08-24 | 惠科股份有限公司 | Display module, gamma voltage adjusting method thereof and display device |
| US10872550B2 (en) * | 2019-03-27 | 2020-12-22 | Novatek Microelectronics Corp. | Display driver and displaying method for cascade application |
| CN110556077B (en) * | 2019-09-26 | 2021-01-26 | 京东方科技集团股份有限公司 | Voltage output circuit, driving circuit, display panel and display device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20060086170A (en) * | 2005-01-26 | 2006-07-31 | 엘지.필립스 엘시디 주식회사 | Liquid crystal display device |
| CN101114425A (en) * | 2006-07-26 | 2008-01-30 | 群康科技(深圳)有限公司 | Gamma voltage follower circuit |
| TW200822049A (en) * | 2006-11-10 | 2008-05-16 | Hannstar Display Corp | Compensating feed-through voltage display device |
| JP2010145738A (en) * | 2008-12-18 | 2010-07-01 | Seiko Epson Corp | Driver ic, electro-optical device, and electronic apparatus |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001265285A (en) * | 2000-03-14 | 2001-09-28 | Nec Corp | Driving circuit for liquid crystal display device |
| CN100353406C (en) * | 2005-06-27 | 2007-12-05 | 友达光电股份有限公司 | Plane displaying device structure |
-
2014
- 2014-04-11 CN CN201410145290.9A patent/CN103943088B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20060086170A (en) * | 2005-01-26 | 2006-07-31 | 엘지.필립스 엘시디 주식회사 | Liquid crystal display device |
| CN101114425A (en) * | 2006-07-26 | 2008-01-30 | 群康科技(深圳)有限公司 | Gamma voltage follower circuit |
| TW200822049A (en) * | 2006-11-10 | 2008-05-16 | Hannstar Display Corp | Compensating feed-through voltage display device |
| JP2010145738A (en) * | 2008-12-18 | 2010-07-01 | Seiko Epson Corp | Driver ic, electro-optical device, and electronic apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103943088A (en) | 2014-07-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103943088B (en) | A kind of gamma electric voltage regulating device of display panel and display device | |
| WO2020173207A1 (en) | Gamma voltage production circuit, driver circuit, and display device | |
| US10437375B2 (en) | Buffer unit, touch-control driving circuit, display device and driving method thereof | |
| CN101615382B (en) | LCD device | |
| KR102453288B1 (en) | Liquid crystal display and dimming control method therof | |
| US20090135116A1 (en) | Gamma reference voltage generating device and gamma voltage generating device | |
| KR102203767B1 (en) | Compensation curciut for common voltage according to gate voltage | |
| JP2010262261A (en) | Liquid crystal display device and method of driving the same | |
| US9514699B2 (en) | Device and method for adjusting gamma voltage | |
| JP2008122960A (en) | Display device and drive apparatus thereof | |
| CN104123911A (en) | Driving method, driving device and organic electroluminescent display device | |
| KR20130130482A (en) | Gamma voltage generating circuit and display device including the same | |
| JP2018500586A (en) | Liquid crystal display | |
| US9837026B2 (en) | Backlight control method, backlight control device and display apparatus employing a system on chip and a field-programmable gate array | |
| US20180374441A1 (en) | Array substrate, liquid crystal display and display device | |
| KR20190006589A (en) | The common electrode driving module and the liquid crystal display panel | |
| KR20140079084A (en) | Apparatus for driving a light emitting diode array and liquid crystal display device using the same | |
| CN105989808A (en) | Gamma curve correction method for a liquid crystal display | |
| KR102487518B1 (en) | Data driving circuit and display apparatus having the same | |
| TW201905890A (en) | Display device and gamma curve compensation circuit and driving method thereof | |
| WO2019076098A1 (en) | Driving method, driving device, and display device | |
| KR101595464B1 (en) | Large screen liquid crystal display device | |
| KR20150059525A (en) | Display apparatus and method of driving thereof | |
| CN109634339B (en) | Voltage adjusting circuit and voltage adjusting method | |
| US20130278583A1 (en) | Display apparatus and display method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |