CN111081195A - Voltage regulating circuit, display panel and high-temperature reliability testing method thereof - Google Patents
Voltage regulating circuit, display panel and high-temperature reliability testing method thereof Download PDFInfo
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- CN111081195A CN111081195A CN201911188491.6A CN201911188491A CN111081195A CN 111081195 A CN111081195 A CN 111081195A CN 201911188491 A CN201911188491 A CN 201911188491A CN 111081195 A CN111081195 A CN 111081195A
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- 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
- G09G3/3611—Control of matrices with row and column drivers
- G09G3/3696—Generation of voltages supplied to electrode drivers
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/16—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements
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- 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
- G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K2219/00—Thermometers with dedicated analog to digital converters
Abstract
The invention provides a voltage regulating circuit, a display panel and a high-temperature reliability testing method for the display panel, wherein the voltage regulating circuit comprises a temperature testing module, a power supply module and a voltage regulating module, an analog-to-digital conversion unit of the temperature testing module is embedded in a common electrode and is externally connected with a temperature-sensitive resistor, when the temperature testing module tests the external temperature, a voltage regulating signal can be sent through the voltage regulating module, and the power supply module carries out variable regulation on the voltage of a low-voltage source and the voltage of a common grounding end according to a voltage regulating command, so that the increase of TFT electric leakage is reduced, and the influence of vertical crosstalk is reduced.
Description
Technical Field
The invention relates to the technical field of display, in particular to a voltage regulating circuit, a display panel and a high-temperature reliability testing method thereof.
Background
Liquid Crystal Displays (LCDs) Display moving pictures using Thin Film Transistors (TFTs) as switching elements, and are widely used because of their thin profile. In the liquid crystal display, a data voltage is applied to a pixel electrode, and a common voltage is applied to a common electrode corresponding to the pixel electrode, the common electrode being connected in parallel to the common line, and the liquid crystal cell is driven by voltages applied to the pixel electrode and the common electrode. Crosstalk (Crosstalk) is a phenomenon of abnormal picture display, in which a part of a whole display screen is affected by another part of the whole display screen, and thus a picture is distorted. Due to the effect of brightness on human eyes, crosstalk can be observed more easily only when the background is an intermediate gray level. Crosstalk generally includes horizontal crosstalk and vertical crosstalk, and becomes vertical crosstalk (directly due to TFT leakage) when upper and lower regions become darker than the background when affected.
In the high-temperature reliability experiment test, as shown in fig. 1, in the center of the prior art, a power management chip is externally connected with a temperature-sensitive resistor, and three output ends VGH, VGL and VSS of the power management chip; where VGH is variable and VGL and VSS are fixed. As shown in fig. 2, in the current-voltage variation curve of the TFT in the high temperature environment, since the lowest current is shifted to the left in the middle, the fixed VGL and VSS may increase the leakage of the TFT, thereby causing more serious vertical crosstalk, and the liquid crystal display may have the structure of fig. three, in which the screen in the vertical area is distorted, and the upper area 10 and the lower area 20 are darker than the middle area of the background.
Therefore, it is desirable to provide a new voltage regulator circuit to reduce the fixed VGL, VSS when the temperature is raised, so as to reduce the TFT leakage and reduce the vertical crosstalk.
Disclosure of Invention
The invention aims to provide a voltage regulating circuit, a display panel and a high-temperature reliability testing method for the display panel.
To achieve the above object, the present invention provides a voltage regulating circuit, comprising: the temperature testing module is provided with an analog-to-digital conversion unit, the analog-to-digital conversion unit is connected with one end of a temperature-sensitive resistor, the other end of the temperature-sensitive resistor is grounded, and the analog-to-digital conversion unit is used for converting an analog signal of the temperature detected by the temperature-sensitive resistor into a digital signal; the power supply module outputs a variable high-voltage source, a variable low-voltage source and a variable common ground voltage; and one end of the voltage adjusting module is connected with the temperature testing module, the other end of the voltage adjusting module is connected with the power supply module, the voltage adjusting module is used for sending a voltage adjusting command to the power supply module according to the temperature detected by the temperature testing module, and the power supply module adjusts the voltage of the low-voltage source and the voltage of the public grounding end according to the voltage adjusting command.
Further, the analog-to-digital conversion unit comprises an analog-to-digital converter.
Furthermore, the voltage regulating module comprises a control line and a data line, the control line is connected with the data line in parallel, one end of the control line is connected with the temperature testing module, and the other end of the control line is connected with the power supply module; one end of the data line is connected with the temperature testing module, and the other end of the data line is connected with the power supply module.
Further, the power module is a power management integrated circuit.
Furthermore, the analog-to-digital conversion unit is embedded in a common electrode, and the common electrode is connected with the voltage regulation module.
The invention also provides a display panel, which comprises a voltage regulating circuit; the voltage regulating circuit includes: the temperature testing module is provided with an analog-to-digital conversion unit, the analog-to-digital conversion unit is connected with one end of a temperature-sensitive resistor, the other end of the temperature-sensitive resistor is grounded, and the analog-to-digital conversion unit is used for converting an analog signal of the temperature detected by the temperature-sensitive resistor into a digital signal; the power supply module outputs a variable high-voltage source, a variable low-voltage source and a variable common ground voltage; and one end of the voltage adjusting module is connected with the temperature testing module, the other end of the voltage adjusting module is connected with the power supply module, and the voltage adjusting module is used for sending a voltage adjusting command to the power supply module according to the temperature detected by the common electrode module, and the power supply module adjusts the voltage of the low-voltage source and the voltage of the common grounding terminal according to the voltage adjusting command.
Further, the analog-to-digital conversion unit comprises an analog-to-digital converter; the power supply module is a power supply management integrated circuit.
Furthermore, the voltage regulating module comprises a control line and a data line, the control line is connected with the data line in parallel, one end of the control line is connected with the temperature testing module, and the other end of the control line is connected with the power supply module; one end of the data line is connected with the temperature testing module, and the other end of the data line is connected with the power supply module.
Furthermore, the analog-to-digital conversion unit is embedded in a common electrode, and the common electrode is connected with the voltage regulation module.
The invention also provides a method for testing the high-temperature reliability of the display panel, which comprises the following steps: providing a display panel as described hereinbefore; controlling the temperature testing module to detect the temperature outside the common electrode, and controlling the voltage module to output a default variable high-voltage source, a default variable low-voltage source and a default variable common ground voltage if the temperature is indoor temperature; raising the temperature to a test temperature, wherein the test temperature is greater than the indoor temperature; controlling the temperature testing module to detect the temperature outside the common electrode again, and if the temperature is higher than the indoor temperature, controlling the voltage module to reduce the variable high-voltage source, and then controlling the voltage adjusting module to send a voltage reduction signal to the voltage module, wherein the voltage module reduces the low-voltage source and the voltage of the common ground terminal; reducing the test temperature to the indoor temperature; and controlling the temperature testing module to detect the temperature outside the common electrode, and if the temperature is the indoor temperature, controlling the voltage module to output the default variable high-voltage source, low-voltage source and common ground terminal voltage.
The invention has the beneficial effects that: the invention provides a voltage regulating circuit, a display panel and a high-temperature reliability testing method for the display panel.
Drawings
The invention is further described below with reference to the figures and examples.
Fig. 1 is a circuit diagram of a voltage regulation circuit under a high temperature reliability test provided in the prior art.
Fig. 2 is a trend graph of current and voltage under a high temperature reliability test provided by the prior art.
Fig. 3 is a plan view of a liquid crystal display under a high temperature reliability test provided in the prior art.
Fig. 4 is a circuit diagram of the voltage regulation under the high temperature reliability test provided by the present invention.
FIG. 5 is a plan view of a liquid crystal display under the high temperature reliability test method provided by the present invention.
A voltage regulating circuit 100;
a temperature test module 110; a power supply module 120; a voltage regulation module 130;
an analog-to-digital conversion unit 1101; an analog-to-digital converter 111; a temperature sensitive resistor 112;
a common electrode 140; a microcontroller 141; a high voltage source 1201;
a low voltage source 1202; common ground voltage 1203; a power management integrated circuit 121;
a control line 132; and a data line 131.
Detailed Description
In order that the present invention may be better understood, the following examples are included to further illustrate the invention, but not to limit its scope.
The following description of the embodiments refers to the accompanying drawings for illustrating the specific embodiments in which the invention may be practiced. The directional terms used in the present invention, such as "up", "down", "front", "back", "left", "right", "top", "bottom", etc., refer to the directions of the attached drawings. Accordingly, the directional terms used are used for explanation and understanding of the present invention, and are not used for limiting the present invention.
As shown in fig. 4, the present invention provides a voltage regulating circuit 100, comprising: a temperature test module 110, a power module 120, and a voltage regulation module 130.
The temperature testing module 110 has an analog-to-digital converting unit 1101, and the analog-to-digital converting unit 1101 includes an analog-to-digital converter 111.
The analog-to-digital conversion unit 1101 is connected with one end of a temperature-sensitive resistor 112, the other end of the temperature-sensitive resistor 112 is grounded, and the analog-to-digital conversion unit 1101 is used for converting an analog signal of the temperature detected by the temperature-sensitive resistor 112 into a digital signal; the analog-to-digital conversion unit 1101 is embedded in the common electrode 140, and the common electrode 140 is connected to the voltage regulation module 130.
The power module 120 outputs a variable high voltage source 1201, a constant low voltage source 1202 and a constant common ground voltage 1203; the power module 120 is a power management integrated circuit 121.
The voltage adjusting module 130 has one end connected to the temperature testing module 110 and the other end connected to the power module 120, and is configured to send a voltage adjusting command to the power module 120 according to the temperature detected by the temperature testing module 110, and the power module 120 adjusts the low-voltage source 1202 and the common ground voltage 1203 according to the voltage adjusting command.
The relationship between temperature and voltage can be flexibly adjusted by the microcontroller 141 in the common electrode 140, and when the temperature rises, the low voltage source 1202 and the common ground voltage 1203 are lowered.
The voltage regulating module 130 includes a control line 132 and a data line 131, the control line 132 is connected in parallel with the data line 131, one end of the control line 132 is connected to the temperature testing module 110, and the other end is connected to the power module 120; one end of the data line 131 is connected to the temperature testing module 110, and the other end is connected to the power module 120.
The invention provides a voltage regulating circuit 100, wherein an analog-to-digital conversion unit 1101 of a temperature test module 110 is embedded in a common electrode 140 and is externally connected with a temperature sensitive resistor 112, when the temperature test module 110 tests the external temperature, a voltage regulating signal can be sent through a voltage regulating module 130, and a power supply module 120 variably regulates the voltage of a low voltage source 1202 and the voltage 1203 of a common ground terminal according to a voltage regulating command, so that the increase of the electric leakage of a TFT (thin film transistor) is reduced, and the influence of vertical crosstalk is reduced.
The present invention also provides a display panel, which includes a voltage regulating circuit 100.
The voltage regulating circuit 100 includes: a temperature test module 110, a power module 120, and a voltage regulation module 130.
The temperature testing module 110 has an analog-to-digital converting unit 1101, and the analog-to-digital converting unit 1101 includes an analog-to-digital converter 111.
The analog-to-digital conversion unit 1101 is connected with one end of a temperature-sensitive resistor 112, the other end of the temperature-sensitive resistor 112 is grounded, and the analog-to-digital conversion unit 1101 is used for converting an analog signal of the temperature detected by the temperature-sensitive resistor 112 into a digital signal; the analog-to-digital conversion unit 1101 is embedded in a common electrode 140, and the common electrode 140 is connected to the voltage regulation module 130. The voltage is regulated by a microcontroller 141 embedded in the common electrode 140.
The power module 120 outputs a variable high voltage source 1201, a variable low voltage source 1202 and a variable common ground voltage 1203; the power module 120 is a power management integrated circuit 121.
The voltage adjusting module 130 has one end connected to the temperature testing module 110 and the other end connected to the power module 120, and is configured to send a voltage adjusting command to the power module 120 according to the temperature detected by the temperature testing module 110, and the power module 120 adjusts the low-voltage source 1202 and the common ground voltage 1203 according to the voltage adjusting command.
The voltage regulating module 130 includes a control line 132 and a data line 131, the control line 132 is connected in parallel with the data line 131, one end of the control line 132 is connected to the temperature testing module 110, and the other end is connected to the power module 120; one end of the data line 131 is connected to the temperature testing module 110, and the other end is connected to the power module 120.
The invention provides a display panel, which is provided with a voltage regulating circuit 100, wherein an analog-to-digital conversion unit 1101 of a temperature testing module 110 is embedded in a common electrode 140 and is externally connected with a temperature sensitive resistor 112, when the temperature testing module 110 tests the external temperature, a voltage regulating signal can be sent through a voltage regulating module 130, and a power supply module 120 carries out variable regulation on a low voltage source 1202 and a common ground terminal voltage 1203 according to a voltage regulating command, so that the increase of TFT electric leakage is reduced, and the influence of vertical crosstalk is reduced.
In order to provide the voltage regulation circuit 100 of the present invention with a method for testing the high temperature reliability of a display panel, the method comprises the following steps.
S1) providing the display panel as described hereinbefore.
S2), the temperature testing module 110 is controlled to detect the temperature outside the common electrode 140, and if the temperature is the indoor temperature, the voltage module is controlled to output a default variable high voltage source 1201, low voltage source 1202 and common ground voltage 1203 (VGH is 30V, VGL is-10V, and VSS is-6V).
S3) increasing the temperature to a test temperature, the test temperature being greater than the room temperature.
The temperature testing module 110 is controlled to detect the temperature outside the common electrode 140 again, and if the temperature is higher than the indoor temperature, the voltage module is controlled to lower the variable high voltage source 1201, and then the voltage adjusting module 130 is controlled to send a voltage lowering signal to the voltage module, and the voltage module lowers the low voltage source 1202 and the common ground voltage 1203.
S4) reducing the test temperature to the room temperature (temperature vs. voltage, which can be flexibly adjusted by the microprocessor inside the common electrode 140).
S5), the temperature testing module 110 is controlled to detect the temperature outside the common electrode 140, and if the temperature is the indoor temperature, the voltage module is controlled to output the default variable high voltage source 1201, low voltage source 1202 and common ground voltage 1203 (VGH is 26V, VGL is-14V, VSS is-10V, and the voltage is decreased according to the temperature increase).
The display panel prepared by the invention is used for high-temperature reliability test, when the test temperature is raised, and the temperature test module 110 is used for testing the external temperature, a voltage regulation signal can be sent through the voltage regulation module 130, and the power supply module 120 can variably regulate the low-voltage source 1202 and the common ground terminal voltage 1203 according to the voltage regulation command, so that the increase of the TFT electric leakage is reduced, and the influence of vertical crosstalk is reduced.
As shown in fig. 5, when the display panel of the present invention is tested for high temperature reliability, the vertical picture distortion is reduced and the vertical crosstalk effect is reduced.
It should be noted that many variations and modifications of the embodiments of the present invention fully described are possible and are not to be considered as limited to the specific examples of the above embodiments. The above examples are given by way of illustration of the invention and are not intended to limit the invention. In conclusion, the scope of the present invention should include those changes or substitutions and modifications which are obvious to those of ordinary skill in the art.
Claims (10)
1. A voltage regulation circuit, comprising:
the temperature testing module is provided with an analog-to-digital conversion unit, the analog-to-digital conversion unit is connected with one end of a temperature-sensitive resistor, the other end of the temperature-sensitive resistor is grounded, and the analog-to-digital conversion unit is used for converting an analog signal of the temperature detected by the temperature-sensitive resistor into a digital signal;
the power supply module outputs a variable high voltage source, a variable low voltage source and a common ground terminal voltage;
and one end of the voltage adjusting module is connected with the temperature testing module, the other end of the voltage adjusting module is connected with the power supply module, the voltage adjusting module is used for sending a voltage adjusting command to the power supply module according to the temperature detected by the temperature testing module, and the power supply module adjusts the voltage of the low-voltage source and the voltage of the public grounding end according to the voltage adjusting command.
2. The voltage regulation circuit of claim 1,
the analog-to-digital conversion unit comprises an analog-to-digital converter.
3. The voltage regulation circuit of claim 1,
the voltage regulating module comprises a control line and a data line,
the control line is connected with the data line in parallel, one end of the control line is connected with the temperature testing module, and the other end of the control line is connected with the power supply module; one end of the data line is connected with the temperature testing module, and the other end of the data line is connected with the power supply module.
4. The voltage regulation circuit of claim 1,
the power supply module is a power supply management integrated circuit.
5. The voltage regulation circuit of claim 1,
the analog-to-digital conversion unit is embedded in a common electrode, and the common electrode is connected with the voltage regulation module.
6. A display panel is characterized by comprising a voltage regulating circuit;
the voltage regulating circuit includes:
the temperature testing module is provided with an analog-to-digital conversion unit, the analog-to-digital conversion unit is connected with one end of a temperature-sensitive resistor, the other end of the temperature-sensitive resistor is grounded, and the analog-to-digital conversion unit is used for converting an analog signal of the temperature detected by the temperature-sensitive resistor into a digital signal;
the power supply module outputs a variable high voltage source, a variable low voltage source and a common ground terminal voltage;
and one end of the voltage adjusting module is connected with the temperature testing module, the other end of the voltage adjusting module is connected with the power supply module, the voltage adjusting module is used for sending a voltage adjusting command to the power supply module according to the temperature detected by the temperature testing module, and the power supply module is used for adjusting the voltage of the low-voltage source and the voltage of the public grounding end according to the voltage adjusting command.
7. The display panel according to claim 6,
the analog-to-digital conversion unit comprises an analog-to-digital converter;
the power supply module is a power supply management integrated circuit.
8. The display panel according to claim 6,
the voltage regulating module comprises a control line and a data line,
the control line is connected with the data line in parallel, one end of the control line is connected with the temperature testing module, and the other end of the control line is connected with the power supply module; one end of the data line is connected with the temperature testing module, and the other end of the data line is connected with the power supply module.
9. The display panel according to claim 6,
the analog-to-digital conversion unit is embedded in a common electrode, and the common electrode is connected with the voltage regulation module.
10. A method for testing high temperature reliability of a display panel is characterized by comprising the following steps: providing a display panel according to claim 9;
controlling the temperature testing module to detect the temperature outside the common electrode, and controlling the voltage module to output default variable high-voltage source, low-voltage source and common ground terminal voltage if the temperature is indoor temperature;
raising the temperature to a test temperature, wherein the test temperature is greater than the indoor temperature;
controlling the temperature testing module to detect the temperature outside the common electrode again, and if the temperature is higher than the indoor temperature, controlling the voltage module to reduce the variable high-voltage source, and then controlling the voltage adjusting module to send a voltage reduction signal to the voltage module, wherein the voltage module reduces the low-voltage source and the voltage of the common ground terminal;
reducing the test temperature to the indoor temperature;
and controlling the temperature testing module to detect the temperature outside the common electrode, and if the temperature is the indoor temperature, controlling the voltage module to output the default variable high-voltage source, the default variable low-voltage source and the default variable common ground voltage.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112435621A (en) * | 2020-11-24 | 2021-03-02 | 京东方科技集团股份有限公司 | Voltage control circuit, voltage output control method and display device |
| CN113948051A (en) * | 2021-10-28 | 2022-01-18 | 合肥鑫晟光电科技有限公司 | Display driving circuit, display driving method and display device |
| CN114882847A (en) * | 2022-04-29 | 2022-08-09 | 长沙惠科光电有限公司 | Display driving circuit, display driving method and display panel |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1963908A (en) * | 2005-11-10 | 2007-05-16 | 昆达电脑科技(昆山)有限公司 | Temperature compensating apparatus of LCD element and its method |
| CN101149292A (en) * | 2006-09-22 | 2008-03-26 | 群康科技(深圳)有限公司 | Display device |
| KR20080048668A (en) * | 2006-11-29 | 2008-06-03 | 엘지디스플레이 주식회사 | Driving circuit for liquid crystal display device and method for driving the same |
| CN101324715A (en) * | 2007-06-15 | 2008-12-17 | 群康科技(深圳)有限公司 | Liquid crystal display apparatus and drive method thereof |
| CN101577103A (en) * | 2008-05-09 | 2009-11-11 | 乐金显示有限公司 | Device and method for driving liquid crystal display device |
| US20110234564A1 (en) * | 2010-03-29 | 2011-09-29 | Samsung Mobile Display Co., Ltd. | Liquid crystal display and method of operating the same |
| CN103680456A (en) * | 2013-12-29 | 2014-03-26 | 京东方科技集团股份有限公司 | Gray-scale brightness adjusting method and device for three-dimensional liquid crystal display panel |
| CN104361874A (en) * | 2014-11-20 | 2015-02-18 | 京东方科技集团股份有限公司 | Temperature compensating circuit and method and liquid crystal display |
| CN104778934A (en) * | 2015-04-21 | 2015-07-15 | 京东方科技集团股份有限公司 | Liquid crystal display panel, driving method and driving circuit thereof and display device |
| CN106226934A (en) * | 2016-09-06 | 2016-12-14 | 合肥京东方光电科技有限公司 | A kind of testing circuit, display base plate, display floater, display device |
| CN106289561A (en) * | 2016-08-30 | 2017-01-04 | 孟玲 | A kind of motor temperature based on wireless network monitoring system |
| CN206057738U (en) * | 2016-09-06 | 2017-03-29 | 合肥京东方光电科技有限公司 | A kind of detection circuit, display base plate, display floater, display device |
| CN106847212A (en) * | 2017-02-23 | 2017-06-13 | 北京京东方专用显示科技有限公司 | Common electric voltage controls circuit and method, display panel and display device |
| CN109119014A (en) * | 2018-09-07 | 2019-01-01 | 京东方科技集团股份有限公司 | A kind of voltage follower circuit, temperature-compensation circuit and display device |
-
2019
- 2019-11-28 CN CN201911188491.6A patent/CN111081195A/en active Pending
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1963908A (en) * | 2005-11-10 | 2007-05-16 | 昆达电脑科技(昆山)有限公司 | Temperature compensating apparatus of LCD element and its method |
| CN101149292A (en) * | 2006-09-22 | 2008-03-26 | 群康科技(深圳)有限公司 | Display device |
| KR20080048668A (en) * | 2006-11-29 | 2008-06-03 | 엘지디스플레이 주식회사 | Driving circuit for liquid crystal display device and method for driving the same |
| CN101324715A (en) * | 2007-06-15 | 2008-12-17 | 群康科技(深圳)有限公司 | Liquid crystal display apparatus and drive method thereof |
| CN101577103A (en) * | 2008-05-09 | 2009-11-11 | 乐金显示有限公司 | Device and method for driving liquid crystal display device |
| US20110234564A1 (en) * | 2010-03-29 | 2011-09-29 | Samsung Mobile Display Co., Ltd. | Liquid crystal display and method of operating the same |
| CN103680456A (en) * | 2013-12-29 | 2014-03-26 | 京东方科技集团股份有限公司 | Gray-scale brightness adjusting method and device for three-dimensional liquid crystal display panel |
| CN104361874A (en) * | 2014-11-20 | 2015-02-18 | 京东方科技集团股份有限公司 | Temperature compensating circuit and method and liquid crystal display |
| CN104778934A (en) * | 2015-04-21 | 2015-07-15 | 京东方科技集团股份有限公司 | Liquid crystal display panel, driving method and driving circuit thereof and display device |
| CN106289561A (en) * | 2016-08-30 | 2017-01-04 | 孟玲 | A kind of motor temperature based on wireless network monitoring system |
| CN106226934A (en) * | 2016-09-06 | 2016-12-14 | 合肥京东方光电科技有限公司 | A kind of testing circuit, display base plate, display floater, display device |
| CN206057738U (en) * | 2016-09-06 | 2017-03-29 | 合肥京东方光电科技有限公司 | A kind of detection circuit, display base plate, display floater, display device |
| CN106847212A (en) * | 2017-02-23 | 2017-06-13 | 北京京东方专用显示科技有限公司 | Common electric voltage controls circuit and method, display panel and display device |
| CN109119014A (en) * | 2018-09-07 | 2019-01-01 | 京东方科技集团股份有限公司 | A kind of voltage follower circuit, temperature-compensation circuit and display device |
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| CN112435621A (en) * | 2020-11-24 | 2021-03-02 | 京东方科技集团股份有限公司 | Voltage control circuit, voltage output control method and display device |
| CN113948051A (en) * | 2021-10-28 | 2022-01-18 | 合肥鑫晟光电科技有限公司 | Display driving circuit, display driving method and display device |
| CN114882847A (en) * | 2022-04-29 | 2022-08-09 | 长沙惠科光电有限公司 | Display driving circuit, display driving method and display panel |
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Application publication date: 20200428 |