CN105225640A - A kind of black picture voltage compensating method of data driver of OLED display - Google Patents
A kind of black picture voltage compensating method of data driver of OLED display Download PDFInfo
- Publication number
- CN105225640A CN105225640A CN201410246823.2A CN201410246823A CN105225640A CN 105225640 A CN105225640 A CN 105225640A CN 201410246823 A CN201410246823 A CN 201410246823A CN 105225640 A CN105225640 A CN 105225640A
- Authority
- CN
- China
- Prior art keywords
- voltage
- data driver
- high plateau
- black picture
- order
- 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
- 238000000034 method Methods 0.000 title claims abstract description 20
- 239000010409 thin film Substances 0.000 abstract description 10
- 238000010586 diagram Methods 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004020 luminiscence type Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
Landscapes
- Control Of El Displays (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
The invention discloses a kind of black picture voltage compensating method of data driver of OLED display, comprise the following steps: provide some set-point voltage, described set-point voltage at least comprises most high plateau voltage, lowest-order voltage and at described most at least single order voltage between high plateau voltage and lowest-order voltage; The voltage curve of data driver is set up based on described set-point voltage; The setting of described most high plateau voltage is independently gone out described voltage curve; Most high plateau voltage described in drawing high separately.By independent given black picture voltage, by its independent adjustment, increased circuit opereating specification, and do not affect the setting of other gray scale voltage, by this independently black picture voltage sets can widen its gap with a time gray scale voltage, increase the tolerance to thin film transistor (TFT) (TFT) assembly leakage current, can reduce and cause picture slightly shinny because of the impact of assembly leakage current and affect contrast problem.
Description
Technical field
The present invention relates to a kind of OLED display field, particularly relate to a kind of black picture voltage compensating method of data driver of OLED display.
Background technology
Controller (timingcontroller) is interrogated when current OLED display mainly comprises, data driver (datadriver), scan line driver (scandriver), and laser controlling line drive (emissioncontrollinedriver).And the voltage of data driver (Gamma) setting generally all adopts the method identical with LCD, data voltage and the data voltage of time single order of meaning and black picture about only have the gap of 10mV, as long as the storage capacitors of picture element is then easy to when causing voltage to reduce because of electric leakage cause panel luminescence thus to affect the brightness of black picture, and then reduces contrast.
Fig. 1 is the 2T1C pixel design schematic diagram of current OLED display product, and Fig. 2 is the voltage curve of its data driver, and Fig. 3 is the circuit diagram of data driver, is provided the voltage of data driver by voltage source 3.When setting up the voltage curve of data driver, decided the slope of the voltage curve of data driver by more given set-point voltage.Shown in composition graphs 2 and Fig. 3, using white picture 0 rank as lowest-order, using black picture 255 rank as most high-order, and take out 63 rank, 127 rank, 191 rank again between white picture 0 rank and black picture 255 rank, formation 0,1,2,3,4 totally 5 set points, the given set-point voltage of 5 GTG set points comprising 0 rank, 63 rank, 127 rank, 191 rank and 255 rank respectively, thus determine the voltage curve 20 of data driver, and adjust this voltage curve 20 by the value adjusting each set-point voltage.But this method independently by black picture 255 rank voltage high, because secondly single order 245 rank voltage also can and then be driven high, cannot will affect picture display like this.And black picture 255 rank voltage and time single order 254 rank voltage difference are apart from very little, after the voltage of the data driver (data) on black picture 255 rank deposits into memory capacitance 21, the thin film transistor (TFT) (TFT) 22 of scan line driver (scandriver) can cut out, but the voltage of memory capacitance 21 can cause the voltage drop of memory capacitance 21 via the leakage current of the thin film transistor (TFT) of scan line driver (scandriver) (TFT) 22, the voltage drop of memory capacitance 21 can cause the Vgs voltage of the thin film transistor (TFT) of data driver (DTFT) 23 (Vgs be between metal-oxide-semiconductor grid and source electrode between voltage) rising makes the thin film transistor (TFT) (DTFT) 23 that originally should be in the data driver of closed condition open gradually thus to produce an I
oLEDelectric current makes Organic Light Emitting Diode (OLED) 24 panel luminous, thus reduces image display quality and the contrast of Organic Light Emitting Diode (OLED) 24 panel.
Summary of the invention
Technical matters to be solved by this invention is to provide one and can adjusts independent for black picture voltage, and does not affect the black picture voltage compensating method of data driver of a kind of OLED display of other gray scale voltage setting.
For realizing above-mentioned technique effect, the invention discloses a kind of black picture voltage compensating method of data driver of OLED display, comprising the following steps:
Provide some set-point voltage, described set-point voltage at least comprises most high plateau voltage, lowest-order voltage and at described most at least single order voltage between high plateau voltage and lowest-order voltage;
The voltage curve of data driver is set up based on described set-point voltage;
The setting of described most high plateau voltage is independently gone out described voltage curve;
Most high plateau voltage described in drawing high separately.
The present invention further improves and is, by following steps, the setting of described most high plateau voltage is independently gone out described voltage curve:
There is provided one independently voltage source power to described most high plateau voltage.
The present invention further improves and is, by following steps, the setting of described most high plateau voltage is independently gone out described voltage curve:
One independently set point is increased to the secondary single order voltage of described most high plateau voltage.
The present invention again discloses a kind of black picture voltage compensating method of data driver of OLED display, comprises the following steps:
Some set-point voltage are provided, described set-point voltage at least comprises most high plateau voltage, lowest-order voltage and at described most at least single order voltage between high plateau voltage and lowest-order voltage, wherein said lowest-order voltage and described at described most at least single order voltage between high plateau voltage and lowest-order voltage by the first voltage fed, described most high plateau voltage is by the second voltage fed;
The voltage curve of described data driver is set up based on described set-point voltage; And
Most high plateau voltage described in drawing high.
The present invention is owing to have employed above technical scheme, making it have following beneficial effect is: by provide one independently voltage source to black picture power voltage supply, or to secondary single order voltage increase by the independently set point of black picture voltage, black picture voltage is independently gone out voltage curve, independent adjustment is carried out to it, increased circuit opereating specification, and do not affect the setting of other gray scale voltage, by draw high this independently black picture voltage can widen its gap with a time gray scale voltage, increase the tolerance to thin film transistor (TFT) (TFT) assembly leakage current, thus reduction causes picture slightly shinny because of the impact of thin film transistor (TFT) (TFT) assembly leakage current and affects contrast problem.
Accompanying drawing explanation
Fig. 1 is the 2T1C pixel design schematic diagram of current OLED display product.
Fig. 2 is the voltage curve of the data driver of existing OLED display.
Fig. 3 is the circuit diagram of the data driver of Fig. 2.
Fig. 4 is the voltage compensation curve map of the first embodiment of the black picture voltage compensating method of data driver of OLED display of the present invention.
Fig. 5 is the voltage compensating circuit schematic diagram of the first embodiment of the black picture voltage compensating method of data driver of OLED display of the present invention.
Fig. 6 is the voltage compensation curve map of data driver black picture voltage compensating method the second embodiment of OLED display of the present invention.
Fig. 7 is the voltage compensating circuit schematic diagram of data driver black picture voltage compensating method the second embodiment of OLED display of the present invention.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the present invention is further detailed explanation.
First consult shown in Fig. 4, the invention discloses a kind of black picture voltage compensating method of data driver of OLED display, comprise the following steps:
First, provide some set-point voltage, comprise the voltage on set point GTG 0 rank, 63 rank, 127 rank, 191 rank and 255 rank, comprising most high plateau voltage 255 rank voltage, lowest-order voltage 0 rank voltage and 63 rank voltages, 127 rank voltages and 191 rank voltages between most high plateau voltage 255 rank voltage and most high plateau voltage 0 rank voltage;
Then, the voltage curve 10 of data driver is set up based on above-mentioned set-point voltage;
Then, the setting of most high plateau voltage 255 rank voltage is independently gone out voltage curve 10, makes when adjustment 255 rank voltage, the voltage of other GTG can not be had influence on;
Finally, draw high separately most high plateau voltage 255 rank voltage, increase the tolerance to thin film transistor (TFT) (TFT) assembly leakage current, avoid causing picture slightly shinny because of the impact of thin film transistor (TFT) (TFT) assembly leakage current and affecting contrast problem.
Coordinate shown in Fig. 4 and Fig. 5, as the first better embodiment of the present invention, there is provided one independently the second voltage source 2 to 255 rank power voltage supplies of most high-order, the setting of 255 rank voltages of most high-order is independently gone out voltage curve 10, and the gray scale voltage beyond remaining most high-order 255 rank voltage is then powered by the first voltage source 1.Then being adjusted by the second voltage source 2 when needing the 255 rank voltage adjusting most high-order, the voltage of other GTG can not be had influence on.
As the second embodiment of the present invention, shown in composition graphs 6 and Fig. 7, an independently set point is increased to the secondary single order 254 rank voltage of 255 rank voltages of most high-order, forms 6 set points, make secondary single order 254 rank have independently set-point voltage.When secondary single order 254 rank voltage sets, then adjust 255 rank voltages, the voltage on other GTG 0 ~ 254 rank would not be had influence on, thus the setting of 255 rank voltages is independently gone out voltage curve 10.
The data driver black picture voltage compensating method of OLED display of the present invention by provide one independently voltage source to black picture power voltage supply, or to secondary single order voltage increase by the independently set point of black picture voltage, black picture voltage is independently gone out voltage curve, independent adjustment is carried out to it, increased circuit opereating specification, and do not affect the setting of other gray scale voltage, by this independently black picture voltage sets can widen its gap with a time gray scale voltage, increase the tolerance to thin film transistor (TFT) (TFT) assembly leakage current, can reduce and cause picture slightly shinny because of the impact of assembly leakage current and affect contrast problem.
Below embodiment is to invention has been detailed description by reference to the accompanying drawings, and those skilled in the art can make many variations example to the present invention according to the above description.Thus, some details in embodiment should not form limitation of the invention, the present invention by the scope that defines using appended claims as protection scope of the present invention.
Claims (4)
1. the black picture voltage compensating method of the data driver of OLED display, is characterized in that comprising the following steps:
There is provided some set-point voltage, described set-point voltage at least comprises most high plateau voltage, lowest-order voltage and at described most at least single order voltage between high plateau voltage and lowest-order voltage;
The voltage curve of described data driver is set up based on described set-point voltage;
The setting of described most high plateau voltage is independently gone out described voltage curve; And
Most high plateau voltage described in drawing high separately.
2. the method for claim 1, is characterized in that, by following steps, the setting of described most high plateau voltage is independently gone out described voltage curve:
There is provided one independently voltage source power to described most high plateau voltage.
3. the method for claim 1, is characterized in that, by following steps, the setting of described most high plateau voltage is independently gone out described voltage curve:
One independently set point is increased to the secondary single order voltage of described most high plateau voltage.
4. the black picture voltage compensating method of the data driver of OLED display, is characterized in that comprising the following steps:
Some set-point voltage are provided, described set-point voltage at least comprises most high plateau voltage, lowest-order voltage and at described most at least single order voltage between high plateau voltage and lowest-order voltage, wherein said lowest-order voltage and described at described most at least single order voltage between high plateau voltage and lowest-order voltage by the first voltage fed, described most high plateau voltage is by the second voltage fed;
The voltage curve of described data driver is set up based on described set-point voltage; And
Most high plateau voltage described in drawing high.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410246823.2A CN105225640B (en) | 2014-06-05 | 2014-06-05 | A kind of black picture voltage compensating method of the data driver of OLED display |
| JP2014152528A JP2015230483A (en) | 2014-06-05 | 2014-07-28 | Black screen voltage compensation method for organic el display data driver |
| TW103126355A TW201546790A (en) | 2014-06-05 | 2014-08-01 | Black screen voltage compensation method for a data driver of an OLED display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410246823.2A CN105225640B (en) | 2014-06-05 | 2014-06-05 | A kind of black picture voltage compensating method of the data driver of OLED display |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105225640A true CN105225640A (en) | 2016-01-06 |
| CN105225640B CN105225640B (en) | 2018-04-06 |
Family
ID=54887254
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410246823.2A Active CN105225640B (en) | 2014-06-05 | 2014-06-05 | A kind of black picture voltage compensating method of the data driver of OLED display |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2015230483A (en) |
| CN (1) | CN105225640B (en) |
| TW (1) | TW201546790A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109523955A (en) * | 2019-01-03 | 2019-03-26 | 京东方科技集团股份有限公司 | Pixel compensation method and device, storage medium, display screen |
| CN110033735A (en) * | 2019-04-25 | 2019-07-19 | 京东方科技集团股份有限公司 | A kind of driving IC, OLED display panel and display device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1677467A (en) * | 2004-03-30 | 2005-10-05 | 索尼株式会社 | Drive circuit of flat panel display device and flat panel display device |
| CN1680987A (en) * | 2004-04-08 | 2005-10-12 | 索尼株式会社 | Device circuit for flat display apparatus and flat display apparatus |
| CN101421772A (en) * | 2006-09-25 | 2009-04-29 | 卡西欧计算机株式会社 | Display driving apparatus and method for driving display driving apparatus, and display apparatus and method for driving display apparatus |
| CN101520983A (en) * | 2008-02-28 | 2009-09-02 | 三星移动显示器株式会社 | Organic light emitting display and driving method thereof |
| CN101527124A (en) * | 2008-03-07 | 2009-09-09 | 瀚宇彩晶股份有限公司 | Driving method of liquid crystal display |
| JP2012137788A (en) * | 2005-03-18 | 2012-07-19 | Semiconductor Energy Lab Co Ltd | Semiconductor device and electronic apparatus |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3741079B2 (en) * | 2002-05-31 | 2006-02-01 | ソニー株式会社 | Display device and portable terminal |
| JP2006313189A (en) * | 2005-05-06 | 2006-11-16 | Seiko Epson Corp | LIGHT EMITTING DEVICE, ITS DRIVE METHOD, AND ELECTRONIC DEVICE |
-
2014
- 2014-06-05 CN CN201410246823.2A patent/CN105225640B/en active Active
- 2014-07-28 JP JP2014152528A patent/JP2015230483A/en active Pending
- 2014-08-01 TW TW103126355A patent/TW201546790A/en unknown
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1677467A (en) * | 2004-03-30 | 2005-10-05 | 索尼株式会社 | Drive circuit of flat panel display device and flat panel display device |
| CN1680987A (en) * | 2004-04-08 | 2005-10-12 | 索尼株式会社 | Device circuit for flat display apparatus and flat display apparatus |
| JP2012137788A (en) * | 2005-03-18 | 2012-07-19 | Semiconductor Energy Lab Co Ltd | Semiconductor device and electronic apparatus |
| CN101421772A (en) * | 2006-09-25 | 2009-04-29 | 卡西欧计算机株式会社 | Display driving apparatus and method for driving display driving apparatus, and display apparatus and method for driving display apparatus |
| CN101520983A (en) * | 2008-02-28 | 2009-09-02 | 三星移动显示器株式会社 | Organic light emitting display and driving method thereof |
| CN101527124A (en) * | 2008-03-07 | 2009-09-09 | 瀚宇彩晶股份有限公司 | Driving method of liquid crystal display |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109523955A (en) * | 2019-01-03 | 2019-03-26 | 京东方科技集团股份有限公司 | Pixel compensation method and device, storage medium, display screen |
| CN109523955B (en) * | 2019-01-03 | 2020-07-07 | 京东方科技集团股份有限公司 | Pixel compensation method and device, storage medium and display screen |
| US11328688B2 (en) | 2019-01-03 | 2022-05-10 | Boe Technology Group Co., Ltd. | Pixel compensation method and device, storage medium, and display screen |
| CN110033735A (en) * | 2019-04-25 | 2019-07-19 | 京东方科技集团股份有限公司 | A kind of driving IC, OLED display panel and display device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2015230483A (en) | 2015-12-21 |
| CN105225640B (en) | 2018-04-06 |
| TW201546790A (en) | 2015-12-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8502757B2 (en) | Organic light emitting display having threshold voltage compensation mechanism and driving method thereof | |
| US10380941B2 (en) | OLED pixel circuit and display device thereof | |
| US8917224B2 (en) | Pixel unit circuit and OLED display apparatus | |
| EP2136352B1 (en) | Pixel and organic light emitting display device using the same with compensation of the degradation of the organic light emitting element | |
| US9508287B2 (en) | Pixel circuit and driving method thereof, display apparatus | |
| CN205080892U (en) | Pixel drive circuit , Pixel circuit , display panel and display device | |
| CN103117042B (en) | Pixel unit drive circuit, pixel unit drive method, pixel unit and display device | |
| CN103500556B (en) | A kind of image element circuit and driving method, thin film transistor backplane | |
| CN104299563A (en) | Luminance compensation method and self-illumination display device | |
| TW201616480A (en) | Pixel structure and driving method thereof | |
| CN103956142B (en) | Panel drive circuit and panel driving method | |
| US9041704B2 (en) | Pixel and organic light emitting display using the same | |
| CN107068061B (en) | Driving method and device of AMOLED panel | |
| CN107909965A (en) | Compensation method and device for display panel | |
| CN104464627A (en) | Active matrix organic light emitting display and control method thereof | |
| CN104575356B (en) | Voltage stabilizing circuit, voltage stabilizing method thereof and display device | |
| CN109427298B (en) | Display driving method and display device | |
| KR20140078920A (en) | Pixel and Organic Light Emitting Display Device Using the same | |
| US20130271501A1 (en) | Organic light emitting diode display and operating method thereof | |
| US20140192103A1 (en) | Method of controlling a dimming operation and organic light emitting display device performing the same | |
| CN105469743A (en) | Pixel compensating circuit, scanning driving circuit and panel display device | |
| CN105047133A (en) | Organic light emitting diode displayer | |
| CN105225640A (en) | A kind of black picture voltage compensating method of data driver of OLED display | |
| CN101847365B (en) | Pixel circuit, driving method thereof, and applied display panel and display | |
| TW201506874A (en) | Driving circuit of pixel of organic light emitting diode |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 1568 Jiugong Road, Jinshan Industrial Zone, Jinshan District, Shanghai, 201506 Patentee after: Shanghai Hehui optoelectronic Co., Ltd Address before: 201508, building two, building 100, 1, Jinshan Industrial Road, 208, Shanghai, Jinshan District Patentee before: EverDisplay Optronics (Shanghai) Ltd. |
|
| CP03 | Change of name, title or address |