CN103268756A - AMOLED voltage external compensation method and system - Google Patents
AMOLED voltage external compensation method and system Download PDFInfo
- Publication number
- CN103268756A CN103268756A CN2013102082976A CN201310208297A CN103268756A CN 103268756 A CN103268756 A CN 103268756A CN 2013102082976 A CN2013102082976 A CN 2013102082976A CN 201310208297 A CN201310208297 A CN 201310208297A CN 103268756 A CN103268756 A CN 103268756A
- Authority
- CN
- China
- Prior art keywords
- voltage
- compensation
- oled
- comparer
- reference voltage
- 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.)
- Granted
Links
Images
Landscapes
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Control Of El Displays (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
The invention provides an AMOLED voltage external compensation method and circuit. The method includes the following steps of comparing the magnitude of a driving voltage of an OLED with the magnitude of a preset reference voltage through a comparator and beginning voltage compensation if the magnitude of the driving voltage of the OLED is less than the magnitude of the preset reference voltage. The voltage compensation includes the following steps of obtaining a voltage difference of between the driving voltage and the preset reference voltage through a subtractor, outputting a position signal of the comparator, looking up digital quantity which needs to be compensated, an output signal of the comparator and the position signal of the comparator according to the voltage difference, controlling a correction unit to correct an image signal which is input into the OLED according to the digital quantity through a voltage controller; conducting conversion on the corrected image signal through a digital-to-analog conversion module, obtaining a corrected image voltage signal and inputting the corrected image voltage signal to the OLED, repeating the voltage compensation process until the driving voltage is equal to the preset reference voltage, and stopping the voltage compensation. According to the AMOLED voltage external compensation method and circuit, a duty ratio of a pixel unit is improved, time for displaying an image is shortened, the luminance of the OLED is only related to the magnitude of Vdata_n, and the luminance of the OLED is not related to a threshold voltage which drives a TFT or electron mobility.
Description
Technical field
The invention belongs to microelectronics technology, relate to a kind of voltage compensating method and system, particularly relate to a kind of AMOLED voltage external compensation method and system.
Background technology
AMOLED(Active Matrix/Organic Light Emitting Diode, what the active matrix organic light-emitting diode (AMOLED) panel) adopt is active driving, a driving tube TFT is wherein arranged, because the deviation of TFT technology, parameters such as the threshold voltage of each driving tube and electron mobility can not keep in full accord.The difference of driving tube threshold voltage and electron mobility all can cause harmful effect to the quality that shows image.Therefore, need threshold voltage and the electron mobility of driving tube be compensated.
Traditional compensation method is that threshold voltage and the electron mobility to driving tube compensates in pixel inside, the structure of compensation has multiple, develop into 6T1C from 2T1C, by the compensation of these collocation structures, the drive current that obtains and the threshold voltage of driving tube and electron mobility are irrelevant.Because these compensation are all carried out in pixel, a lot of TFT and electric capacity have been increased in pixel inside, especially the chip area that takies of electric capacity is bigger, at the area that adds that other pipes take, the ratio that the light-emitting area of OLED accounts for whole elemental area reduces greatly, i.e. dutycycle AR(Aperture Ratio) very low.
Summary of the invention
The shortcoming of prior art in view of the above, the object of the present invention is to provide a kind of AMOLED voltage external compensation method and system, be used for solving prior art the AMOLED voltage compensation is all finished in pixel inside, reduced the problem of the dutycycle of pixel cell.
Reach other relevant purposes for achieving the above object, the invention provides a kind of AMOLED voltage external compensation method and system.
A kind of AMOLED voltage external compensation method, described AMOLED voltage external compensation method comprises:
The driving voltage of OLED in the read pixel array in each pixel cell;
The size of the reference voltage that utilizes the more described driving voltage of comparer and preset, if described driving voltage is then exported high level less than default reference voltage, and the beginning voltage compensation;
Described voltage compensation comprises: utilize subtracter to draw the voltage difference of described driving voltage and default reference voltage, the position signalling of output comparator simultaneously; According to described voltage difference, search the digital quantity of the needs compensation of storing in the storer, output signal and the position signalling of comparer by look-up table; Utilize voltage controller to read the digital quantity of needs compensation and the position signalling of comparer; Utilize correcting unit according to the digital quantity of described needs compensation the picture signal of importing described OLED to be proofreaied and correct; Utilize D/A converter module that the picture signal after proofreading and correct is changed, obtain the correcting image voltage signal and be input among the described OLED;
Repeat described voltage compensation process, until the reference voltage that described driving voltage equals to preset, the comparer output low level stops voltage compensation.
Preferably, the magnitude of voltage of described correcting image voltage signal is greater than the magnitude of voltage of the described picture signal before proofreading and correct.
A kind of AMOLED voltage external compensation circuit, described AMOLED voltage external compensation circuit comprises:
Reference voltage generator, the reference voltage that output is default;
Comparer, link to each other with described reference voltage generator with the OLED in each pixel cell in the pel array, the size of the driving voltage of more described OLED and the reference voltage of presetting is if described driving voltage is then exported high level less than default reference voltage, and trigger voltage compensating module, continue to carry out voltage compensation, the reference voltage that equals to preset until described driving voltage, then output low level, close the voltage compensation module, stop voltage compensation;
Described voltage compensation module comprises:
Subtracter links to each other with described comparer, calculates the voltage difference of described driving voltage and the reference voltage of presetting when comparer output high level, simultaneously the position signalling of output comparator;
Storer stores look-up table, comprises the digital quantity of the needs compensation corresponding with described voltage difference, output signal and the position signalling of comparer in the described look-up table;
Voltage controller links to each other respectively with subtracter with described storer, and voltage difference and the described look-up table exported according to subtracter read the digital quantity of needs compensation and the position signalling of comparer;
Correcting unit links to each other with described voltage controller, according to the digital quantity of described needs compensation the picture signal of importing described OLED is proofreaied and correct;
D/A converter module links to each other respectively with described correcting unit, pixel cell, and the picture signal after proofreading and correct is changed, and obtains the correcting image voltage signal and is input among the described OLED.
Preferably, described comparer comprises M comparing unit, the magnitude of voltage of the picture signal of one-row pixels unit in the described pel array of the corresponding sampling of each comparing unit; M is the line number of pixel cell in the described pel array, and M is the positive integer more than or equal to 1.
Preferably, described subtracter comprises M subtrator, and each subtrator links to each other with a corresponding comparing unit.
As mentioned above, AMOLED voltage external compensation method and system of the present invention have following beneficial effect:
The present invention adopts the mode of external compensation, has improved the dutycycle AR of pixel cell; And, employing be voltage sample compensation, adopt the speed of compensation fast than electric current, reduced to show the required time of image; By compensation process, the OLED anode spot voltage V that obtains
OLED=V
Ref, V wherein
RefBe according to V
Data_nSize determine that so the size of the brightness of OLED only and V
Data_nSize relevant, irrelevant with the threshold voltage of drive TFT and electron mobility.
Description of drawings
Fig. 1 is the structural representation of existing pixel cell driving circuit.
Fig. 2 is the structural representation of AMOLED voltage external compensation circuit of the present invention.
Fig. 3 is the schematic flow sheet of AMOLED voltage external compensation method of the present invention.
The element numbers explanation
10 reference voltage generators
20 comparers
30 voltage compensation modules
31 subtracters
32 storeies
33 voltage controllers
34 correcting units
35 D/A converter modules
Embodiment
Below by specific instantiation explanation embodiments of the present invention, those skilled in the art can understand other advantages of the present invention and effect easily by the disclosed content of this instructions.The present invention can also be implemented or be used by other different embodiment, and the every details in this instructions also can be based on different viewpoints and application, carries out various modifications or change under the spirit of the present invention not deviating from.
See also accompanying drawing.Need to prove, the diagram that provides in the present embodiment only illustrates basic conception of the present invention in a schematic way, satisfy only show in graphic with the present invention in relevant assembly but not component count, shape and size drafting when implementing according to reality, kenel, quantity and the ratio of each assembly can be a kind of random change during its actual enforcement, and its assembly layout kenel also may be more complicated.
As shown in Figure 1, existing pixel cell driving circuit comprises: scan transistor T1, driving transistors T3.Wherein, scan transistor T1 control view data V
Data_nWhether import in the pixel cell; The grid of described scan transistor T1 meets sweep signal scan_n, and the drain electrode map interlinking is as data V
Data_nDriving transistors T3 is according to described view data V
Data_nDriving OLED is luminous; The grid of described driving transistors T3 links to each other with the source electrode of described scan transistor T1.
The present invention is described in detail below in conjunction with embodiment and accompanying drawing.
Embodiment
Present embodiment provides a kind of AMOLED voltage external compensation circuit, and as illustrated in fig. 1 and 2, described external compensation circuit is used for the picture signal of input pel array is compensated, and makes the anode spot voltage V of the OLED in each pixel cell in the pel array
OLEDBe equal to reference voltage V
Ref, V wherein
RefBe according to V
Data_nSize determine, so the size of the brightness of each OLED in the pel array only with the picture signal V that is input to himself
Data_nSize relevant, irrelevant with the threshold voltage of drive TFT and electron mobility.Among Fig. 2, pel array comprises the capable N row of M pixel cell, and M and N are the positive integer more than or equal to 1.
Described AMOLED voltage external compensation circuit comprises: reference voltage generator 10, comparer 20, voltage compensation module 30.Wherein, reference voltage generator 10 is used for the default reference voltage of output; Comparer 20 with pel array in OLED in each pixel cell link to each other with described reference voltage generator, the size of the driving voltage of more described OLED and the reference voltage of presetting, if described driving voltage is less than default reference voltage, then export high level, and trigger voltage compensating module 30, continue to carry out voltage compensation, the reference voltage that equals to preset until described driving voltage, then output low level is closed voltage compensation module 30, stops voltage compensation.That is: comparer takes out the driving voltage V of OLED from pixel cell
OLED, reference voltage generator produces reference voltage V simultaneously
Ref, comparer is the size of these two voltages relatively, works as V
OLED＜V
RefThe time, comparer output 1; Work as V
OLED=V
RefThe time, comparer output 0.
Described voltage compensation module 30 comprises: subtracter 31, storer 32, voltage controller 33, correcting unit 34, D/A converter module 35.Wherein, described subtracter 31 links to each other with described comparer 20, calculates the voltage difference of described driving voltage and the reference voltage of presetting when comparer output high level, simultaneously the position signalling of output comparator; Described subtracter 31 is made up of amplifier, and subtracter 31 is with the driving voltage V of OLED
OLEDWith reference voltage V
RefSubtract each other and obtain difference DELTA V, comparer output 1 produces the position signalling of comparer simultaneously.Described storer 32 stores look-up table, comprises the digital quantity of the needs compensation corresponding with described voltage difference, output signal and the position signalling of comparer in the described look-up table; Described voltage controller 33 links to each other respectively with subtracter 31 with described storer 32, and voltage difference and the described look-up table exported according to subtracter read the digital quantity of needs compensation and the position signalling of comparer; Described voltage controller 33 is according to Δ V, and finding in storer by look-up table need be to V
Data_nThe digital quantity of compensation, then, voltage controller 33 reads the digital quantity of needs compensation and the position signalling of comparer.Described correcting unit 34 links to each other with described voltage controller 33, according to the digital quantity of described needs compensation the picture signal of importing described OLED is proofreaied and correct; Described D/A converter module 35 links to each other respectively with described correcting unit 34, pixel cell, and the picture signal after proofreading and correct is changed, and obtains the correcting image voltage signal and is input among the described OLED.Correcting unit 34 is according to the picture signal V of the digital quantity that compensates to input OLED
Data_nProofread and correct picture signal after correction input D/A converter module 35(DAC) obtain new correcting image voltage signal V
Data_n'.The voltage V of the picture signal after the correction
Data_n' increased i.e. V
Data_n' greater than V
Data_nThereby, the voltage of OLED anode spot has also been increased.
Further, described comparer 20 comprises M comparing unit, the magnitude of voltage of the picture signal of one-row pixels unit in the described pel array of the corresponding sampling of each comparing unit; M is the line number of pixel cell in the described pel array, and M is the positive integer more than or equal to 1.Described subtracter 31 comprises M subtrator, and each subtrator links to each other with a corresponding comparing unit.
Repeat the course of work of voltage compensation module, up to V
OLED=V
Ref, work as V
OLED=V
RefThe time, the output of comparer jumps to 0 by 1, and this signal is transferred to voltage controller, and voltage controller sends instruction, stops the detection to OLED anode spot voltage, and compensation process finishes.
Present embodiment also provides a kind of AMOLED voltage external compensation method, and as shown in Figure 3, described AMOLED voltage external compensation method comprises:
The driving voltage of OLED in the read pixel array in each pixel cell;
The size of the reference voltage that utilizes the more described driving voltage of comparer and preset, if described driving voltage is then exported high level less than default reference voltage, and the beginning voltage compensation;
Described voltage compensation comprises: utilize subtracter to draw the voltage difference of described driving voltage and default reference voltage, the position signalling of output comparator simultaneously; According to described voltage difference, search the digital quantity of the needs compensation of storing in the storer, output signal and the position signalling of comparer by look-up table; Utilize voltage controller to read the digital quantity of needs compensation and the position signalling of comparer; Utilize correcting unit according to the digital quantity of described needs compensation the picture signal of importing described OLED to be proofreaied and correct; Utilize D/A converter module that the picture signal after proofreading and correct is changed, obtain the correcting image voltage signal and be input among the described OLED; The magnitude of voltage of described correcting image voltage signal is greater than the magnitude of voltage of the described picture signal before proofreading and correct;
Repeat described voltage compensation process, until the reference voltage that described driving voltage equals to preset, the comparer output low level stops voltage compensation.
The present invention adopts the mode of external compensation, has improved the dutycycle AR of pixel cell; And, employing be voltage sample compensation, adopt the speed of compensation fast than electric current, reduced to show the required time of image.By compensation process, the OLED anode spot voltage V that obtains
OLED=V
Ref, V wherein
RefBe according to V
Data_nSize determine that so the size of the brightness of OLED only and V
Data_nSize relevant, irrelevant with the threshold voltage of drive TFT and electron mobility.
In sum, the present invention has effectively overcome various shortcoming of the prior art and the tool high industrial utilization.
Above-described embodiment is illustrative principle of the present invention and effect thereof only, but not is used for restriction the present invention.Any person skilled in the art scholar all can be under spirit of the present invention and category, and above-described embodiment is modified or changed.Therefore, have in the technical field under such as and know that usually the knowledgeable modifies or changes not breaking away from all equivalences of finishing under disclosed spirit and the technological thought, must be contained by claim of the present invention.
Claims (5)
1. an AMOLED voltage external compensation method is characterized in that, described AMOLED voltage external compensation method comprises:
The driving voltage of OLED in the read pixel array in each pixel cell;
The size of the reference voltage that utilizes the more described driving voltage of comparer and preset, if described driving voltage is then exported high level less than default reference voltage, and the beginning voltage compensation;
Described voltage compensation comprises: utilize subtracter to draw the voltage difference of described driving voltage and default reference voltage, the position signalling of output comparator simultaneously; According to described voltage difference, search the digital quantity of the needs compensation of storing in the storer, output signal and the position signalling of comparer by look-up table; Utilize voltage controller to read the digital quantity of needs compensation and the position signalling of comparer; Utilize correcting unit according to the digital quantity of described needs compensation the picture signal of importing described OLED to be proofreaied and correct; Utilize D/A converter module that the picture signal after proofreading and correct is changed, obtain the correcting image voltage signal and be input among the described OLED;
Repeat described voltage compensation process, until the reference voltage that described driving voltage equals to preset, the comparer output low level stops voltage compensation.
2. AMOLED voltage external compensation method according to claim 1 is characterized in that: the magnitude of voltage of described correcting image voltage signal is greater than the magnitude of voltage of the described picture signal before proofreading and correct.
3. an AMOLED voltage external compensation circuit is characterized in that, described AMOLED voltage external compensation circuit comprises:
Reference voltage generator, the reference voltage that output is default;
Comparer, link to each other with described reference voltage generator with the OLED in each pixel cell in the pel array, the size of the driving voltage of more described OLED and the reference voltage of presetting is if described driving voltage is then exported high level less than default reference voltage, and trigger voltage compensating module, continue to carry out voltage compensation, the reference voltage that equals to preset until described driving voltage, then output low level, close the voltage compensation module, stop voltage compensation;
Described voltage compensation module comprises:
Subtracter links to each other with described comparer, calculates the voltage difference of described driving voltage and the reference voltage of presetting when comparer output high level, simultaneously the position signalling of output comparator;
Storer stores look-up table, comprises the digital quantity of the needs compensation corresponding with described voltage difference, output signal and the position signalling of comparer in the described look-up table;
Voltage controller links to each other respectively with subtracter with described storer, and voltage difference and the described look-up table exported according to subtracter read the digital quantity of needs compensation and the position signalling of comparer;
Correcting unit links to each other with described voltage controller, according to the digital quantity of described needs compensation the picture signal of importing described OLED is proofreaied and correct;
D/A converter module links to each other respectively with described correcting unit, pixel cell, and the picture signal after proofreading and correct is changed, and obtains the correcting image voltage signal and is input among the described OLED.
4. AMOLED voltage external compensation circuit according to claim 2, it is characterized in that: described comparer comprises M comparing unit, the magnitude of voltage of the picture signal of one-row pixels unit in the described pel array of the corresponding sampling of each comparing unit; M is the line number of pixel cell in the described pel array, and M is the positive integer more than or equal to 1.
5. AMOLED voltage external compensation circuit according to claim 4, it is characterized in that: described subtracter comprises M subtrator, each subtrator links to each other with a corresponding comparing unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310208297.6A CN103268756B (en) | 2013-05-29 | 2013-05-29 | AMOLED voltage external compensation method and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310208297.6A CN103268756B (en) | 2013-05-29 | 2013-05-29 | AMOLED voltage external compensation method and system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103268756A true CN103268756A (en) | 2013-08-28 |
| CN103268756B CN103268756B (en) | 2015-03-18 |
Family
ID=49012383
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310208297.6A Active CN103268756B (en) | 2013-05-29 | 2013-05-29 | AMOLED voltage external compensation method and system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103268756B (en) |
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103996374A (en) * | 2014-05-12 | 2014-08-20 | 京东方科技集团股份有限公司 | Device and method for achieving external dynamic compensation for display screen active area direct-current voltage drop |
| CN105023539A (en) * | 2015-07-10 | 2015-11-04 | 北京大学深圳研究生院 | Peripheral compensation system and method of pixel matrix and display system |
| CN105047137A (en) * | 2015-09-09 | 2015-11-11 | 深圳市华星光电技术有限公司 | AMOLED real-time compensation system |
| CN105788515A (en) * | 2014-12-23 | 2016-07-20 | 昆山国显光电有限公司 | Organic light-emitting display, brightness compensation system thereof and compensation method thereof |
| WO2016115752A1 (en) * | 2015-01-19 | 2016-07-28 | 深圳市华星光电技术有限公司 | Organic light-emitting display panel and voltage drop compensation method therefor |
| CN106652907A (en) * | 2017-01-05 | 2017-05-10 | 上海天马有机发光显示技术有限公司 | Organic light-emitting display panel, organic light-emitting display device and pixel compensation method |
| CN107068054A (en) * | 2017-04-25 | 2017-08-18 | 深圳市华星光电技术有限公司 | A kind of drive circuit and liquid crystal display |
| CN107248389A (en) * | 2017-07-24 | 2017-10-13 | 上海天马有机发光显示技术有限公司 | The color gamut compensation method and device of display panel |
| US9812061B2 (en) | 2015-02-24 | 2017-11-07 | Au Optronics Corp. | Display apparatus and operation method thereof |
| CN107358916A (en) * | 2017-08-15 | 2017-11-17 | 上海天马有机发光显示技术有限公司 | Image element circuit, its driving method, electroluminescence display panel and display device |
| CN107507574A (en) * | 2017-08-31 | 2017-12-22 | 京东方科技集团股份有限公司 | OLED display panel and its compensation method and device, display device |
| CN107967897A (en) * | 2013-12-05 | 2018-04-27 | 伊格尼斯创新公司 | Image element circuit and extraction circuit parameter and the method that compensation in pixel is provided |
| CN108022546A (en) * | 2018-01-24 | 2018-05-11 | 合肥京东方显示技术有限公司 | Method for compensating signal, apparatus and system, source driving chip, storage medium |
| CN109147667A (en) * | 2018-09-21 | 2019-01-04 | 京东方科技集团股份有限公司 | Voltage compensating device and method, array substrate, display device |
| WO2019075852A1 (en) * | 2017-10-18 | 2019-04-25 | 深圳市华星光电半导体显示技术有限公司 | External electrical compensation detection method for amoled |
| CN109949750A (en) * | 2017-12-20 | 2019-06-28 | 乐金显示有限公司 | Display device and its driving method |
| CN110223632A (en) * | 2019-07-26 | 2019-09-10 | 深圳市洲明科技股份有限公司 | Display screen correcting circuit and display screen |
| CN110246468A (en) * | 2019-06-21 | 2019-09-17 | 昆山龙腾光电有限公司 | A kind of amplitude of oscillation adjustment driving device |
| CN113920938A (en) * | 2021-10-27 | 2022-01-11 | 锐芯微电子股份有限公司 | Calibration device, display chip and display |
| WO2022061998A1 (en) * | 2020-09-28 | 2022-03-31 | 北京大学深圳研究生院 | Feedback signal detection method and pixel external analog domain compensation display system |
| WO2022061996A1 (en) * | 2020-09-28 | 2022-03-31 | 北京大学深圳研究生院 | Feedback signal detection method and display system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101430862A (en) * | 2007-11-07 | 2009-05-13 | 乐金显示有限公司 | Driving apparatus for organic electro-luminescence display device |
| CN101976546A (en) * | 2010-10-19 | 2011-02-16 | 友达光电股份有限公司 | Pixel circuits with power voltage drop compensation functions and luminous panel |
| US20110205221A1 (en) * | 2010-02-19 | 2011-08-25 | Chih-Lung Lin | Display and compensation circuit therefor |
| CN102568430A (en) * | 2012-03-06 | 2012-07-11 | 深圳市华星光电技术有限公司 | Driving method for liquid crystal panel, display driving circuit and liquid crystal display device |
-
2013
- 2013-05-29 CN CN201310208297.6A patent/CN103268756B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101430862A (en) * | 2007-11-07 | 2009-05-13 | 乐金显示有限公司 | Driving apparatus for organic electro-luminescence display device |
| US20110205221A1 (en) * | 2010-02-19 | 2011-08-25 | Chih-Lung Lin | Display and compensation circuit therefor |
| CN101976546A (en) * | 2010-10-19 | 2011-02-16 | 友达光电股份有限公司 | Pixel circuits with power voltage drop compensation functions and luminous panel |
| CN102568430A (en) * | 2012-03-06 | 2012-07-11 | 深圳市华星光电技术有限公司 | Driving method for liquid crystal panel, display driving circuit and liquid crystal display device |
Cited By (35)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107967897A (en) * | 2013-12-05 | 2018-04-27 | 伊格尼斯创新公司 | Image element circuit and extraction circuit parameter and the method that compensation in pixel is provided |
| CN107967897B (en) * | 2013-12-05 | 2021-09-03 | 伊格尼斯创新公司 | Pixel circuit and method for extracting circuit parameters and providing in-pixel compensation |
| WO2015172470A1 (en) * | 2014-05-12 | 2015-11-19 | 京东方科技集团股份有限公司 | Apparatus and method for compensation of display screen active area direct current voltage drop |
| CN103996374B (en) * | 2014-05-12 | 2016-09-07 | 京东方科技集团股份有限公司 | External dynamic compensates the device and method of display screen active area direct current pressure drop |
| CN103996374A (en) * | 2014-05-12 | 2014-08-20 | 京东方科技集团股份有限公司 | Device and method for achieving external dynamic compensation for display screen active area direct-current voltage drop |
| CN105788515A (en) * | 2014-12-23 | 2016-07-20 | 昆山国显光电有限公司 | Organic light-emitting display, brightness compensation system thereof and compensation method thereof |
| WO2016115752A1 (en) * | 2015-01-19 | 2016-07-28 | 深圳市华星光电技术有限公司 | Organic light-emitting display panel and voltage drop compensation method therefor |
| US9812064B2 (en) | 2015-01-19 | 2017-11-07 | Shenzhen China Star Optoelectronics Technology Co., Ltd. | Organic light-emitting display panel and method for compensating voltage drop thereof |
| US9812061B2 (en) | 2015-02-24 | 2017-11-07 | Au Optronics Corp. | Display apparatus and operation method thereof |
| CN105023539A (en) * | 2015-07-10 | 2015-11-04 | 北京大学深圳研究生院 | Peripheral compensation system and method of pixel matrix and display system |
| CN105023539B (en) * | 2015-07-10 | 2017-11-28 | 北京大学深圳研究生院 | Offset peripheral system, method and the display system of a kind of picture element matrix |
| CN105047137A (en) * | 2015-09-09 | 2015-11-11 | 深圳市华星光电技术有限公司 | AMOLED real-time compensation system |
| WO2017041343A1 (en) * | 2015-09-09 | 2017-03-16 | 深圳市华星光电技术有限公司 | Amoled real-time compensation system |
| GB2556799B (en) * | 2015-09-09 | 2021-05-12 | Shenzhen China Star Optoelect | Amoled real-time compensation system |
| GB2556799A (en) * | 2015-09-09 | 2018-06-06 | Shenzhen China Star Optoelect | Amoled real-time compensation system |
| CN106652907A (en) * | 2017-01-05 | 2017-05-10 | 上海天马有机发光显示技术有限公司 | Organic light-emitting display panel, organic light-emitting display device and pixel compensation method |
| CN106652907B (en) * | 2017-01-05 | 2019-02-05 | 上海天马有机发光显示技术有限公司 | Organic light emitting display panel, organic light-emitting display device and pixel compensation method |
| CN107068054A (en) * | 2017-04-25 | 2017-08-18 | 深圳市华星光电技术有限公司 | A kind of drive circuit and liquid crystal display |
| CN107248389A (en) * | 2017-07-24 | 2017-10-13 | 上海天马有机发光显示技术有限公司 | The color gamut compensation method and device of display panel |
| US10417967B2 (en) | 2017-08-15 | 2019-09-17 | Shanghai Tianma AM-OLED Co., Ltd. | Display panel and display device |
| CN107358916A (en) * | 2017-08-15 | 2017-11-17 | 上海天马有机发光显示技术有限公司 | Image element circuit, its driving method, electroluminescence display panel and display device |
| CN107507574A (en) * | 2017-08-31 | 2017-12-22 | 京东方科技集团股份有限公司 | OLED display panel and its compensation method and device, display device |
| US10490124B2 (en) | 2017-10-18 | 2019-11-26 | Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd. | AMOLED external electrical compensation detection method |
| WO2019075852A1 (en) * | 2017-10-18 | 2019-04-25 | 深圳市华星光电半导体显示技术有限公司 | External electrical compensation detection method for amoled |
| CN109949750A (en) * | 2017-12-20 | 2019-06-28 | 乐金显示有限公司 | Display device and its driving method |
| CN109949750B (en) * | 2017-12-20 | 2022-05-10 | 乐金显示有限公司 | Display device and driving method thereof |
| CN108022546A (en) * | 2018-01-24 | 2018-05-11 | 合肥京东方显示技术有限公司 | Method for compensating signal, apparatus and system, source driving chip, storage medium |
| CN109147667A (en) * | 2018-09-21 | 2019-01-04 | 京东方科技集团股份有限公司 | Voltage compensating device and method, array substrate, display device |
| CN110246468B (en) * | 2019-06-21 | 2022-12-02 | 昆山龙腾光电股份有限公司 | Amplitude of oscillation adjustment drive arrangement |
| CN110246468A (en) * | 2019-06-21 | 2019-09-17 | 昆山龙腾光电有限公司 | A kind of amplitude of oscillation adjustment driving device |
| CN110223632A (en) * | 2019-07-26 | 2019-09-10 | 深圳市洲明科技股份有限公司 | Display screen correcting circuit and display screen |
| WO2022061998A1 (en) * | 2020-09-28 | 2022-03-31 | 北京大学深圳研究生院 | Feedback signal detection method and pixel external analog domain compensation display system |
| WO2022061996A1 (en) * | 2020-09-28 | 2022-03-31 | 北京大学深圳研究生院 | Feedback signal detection method and display system |
| CN113920938A (en) * | 2021-10-27 | 2022-01-11 | 锐芯微电子股份有限公司 | Calibration device, display chip and display |
| CN113920938B (en) * | 2021-10-27 | 2022-08-19 | 锐芯微电子股份有限公司 | Calibration device, display chip and display |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103268756B (en) | 2015-03-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103268756B (en) | AMOLED voltage external compensation method and system | |
| KR102648975B1 (en) | Organic Light Emitting Display and Compensation Method of Driving Characteristic thereof | |
| US10593260B1 (en) | Pixel driving circuit for OLED display device and OLED display device | |
| US10930215B2 (en) | Pixel circuit, driving method thereof, and display apparatus | |
| CN102768821B (en) | AMOLED (active matrix/organic light emitting diode) display and driving method of AMOLED display | |
| US10170037B2 (en) | Controller, organic light-emitting display panel, organic light-emitting display device, and method of driving the same | |
| US9842546B2 (en) | Organic light emitting display device for improving a contrast ratio | |
| US9852685B2 (en) | Pixel circuit and driving method thereof, display apparatus | |
| CN104036725B (en) | Image element circuit and its driving method, organic electroluminescence display panel and display device | |
| US10262593B2 (en) | Light emitting drive circuit and organic light emitting display | |
| US9747842B2 (en) | Organic light emitting display | |
| WO2015192399A1 (en) | Pixel driving circuit and pixel driving method for organic light emitting diode | |
| CN105679244A (en) | AMOLED pixel driving circuit and pixel driving circuit | |
| CN109300436B (en) | AMOLED pixel driving circuit and driving method | |
| CN104715717A (en) | Organic light emitting display device | |
| CN105139805B (en) | A kind of pixel-driving circuit and its driving method, display device | |
| CN109949746B (en) | Electroluminescent display and driving method thereof | |
| US20140354522A1 (en) | Display device and driving method thereof | |
| US11195472B2 (en) | Display device | |
| KR102120124B1 (en) | Organic light emitting display device | |
| CN105679243A (en) | Amoled pixel driving circuit and pixel driving method | |
| KR20200058206A (en) | Organic Light Emitting Display Device For Compensating Luminance And Luminance Compensation Method Of The Same | |
| US20190057982A1 (en) | Flexible display and improving method and improving device of bending display abnormality thereof | |
| CN203300188U (en) | Pixel circuit and pixel array structure | |
| KR102323292B1 (en) | AMOLED pixel driving circuit and driving 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 | ||
| ASS | Succession or assignment of patent right |
Owner name: SHANGHAI ADVANCED RESEARCH INSTITUTE, CHINESE ACAD Free format text: FORMER OWNER: SHANGHAI ZHONGKE INSTITUTE FOR ADVANCED STUDY Effective date: 20131021 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20131021 Address after: 201210 Shanghai city Pudong New Area Hartcourt Road No. 99 Applicant after: Shanghai Advanced Research Institute, Chinese Academy of Sciences Address before: 201210 Shanghai city Pudong New Area Hartcourt Road No. 99 Applicant before: Shanghai Zhongke Institute for Advanced Study |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |