CN109637445A - The compensation method of oled panel pixel-driving circuit - Google Patents
The compensation method of oled panel pixel-driving circuit Download PDFInfo
- Publication number
- CN109637445A CN109637445A CN201910075944.8A CN201910075944A CN109637445A CN 109637445 A CN109637445 A CN 109637445A CN 201910075944 A CN201910075944 A CN 201910075944A CN 109637445 A CN109637445 A CN 109637445A
- Authority
- CN
- China
- Prior art keywords
- channel
- pixel
- driving circuit
- data
- analog
- 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.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—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 using controlled light sources
- G09G3/30—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 using controlled light sources using electroluminescent panels
- G09G3/32—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Electroluminescent Light Sources (AREA)
- Control Of El Displays (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The present invention relates to a kind of compensation methodes of oled panel pixel-driving circuit.This method comprises: the pixel-driving circuit correspondence of Nth column pixel is connected with Nth column detection lines on step 10, oled panel; the respective channel for receiving the analog-digital converter of the detecting data of the Nth column detection lines is channel N; the state of the Nth column detection lines be it is normal or abnormal when, using channel N analog-digital converter correction data by the state respective identification of channel N be it is normal or abnormal；Step 20, before being compensated using the detecting data of channel N, identify the analog-digital converter correction data of channel N first to judge the state of channel N；Step 30, for normal channel N, offset data needed for directly obtaining the pixel-driving circuit of Nth column pixel using the detecting data of channel N.The compensation method of oled panel pixel-driving circuit of the invention, positions abnormal passage using analog to digital conversion circuit calibration data, greatly improves the accuracy determined channel status.
Description
Technical field
The present invention relates to field of display technology more particularly to a kind of compensation methodes of oled panel pixel-driving circuit.
Background technique
Organic Light Emitting Diode (OLED) display device has self-luminous, and driving voltage is low, and luminous efficiency is high, the response time
It is short, it many advantages, such as use temperature range is wide, is known as being the display device for most having development potentiality by industry.
It is a kind of existing OLED pixel drive circuit schematic diagram referring to Fig. 1, which mainly wraps
It includes: as the first film transistor T1 of scanning thin film transistor (TFT) (Scan TFT), as driving thin film transistor (TFT) (Driving
TFT the second thin film transistor (TFT) T2), the third thin film transistor (TFT) T3 as detecting thin film transistor (TFT) (Sense TFT), the first electricity
Hold Cst, the second capacitor Csen and Organic Light Emitting Diode D1；The OLED pixel driving circuit passes through detection lines (sense
Line) connection sensing circuit is to realize that detecting function, circuit for detecting are detected by detection lines from OLED pixel driving circuit
Voltage Vsamp, circuit for detecting may include in source electrode driver, according to existing external compensation detection techniques, utilize detecting
Voltage Vsamp can compensate for the threshold voltage vt h of the second thin film transistor (TFT) T2, to promote display quality.
The grid of first film transistor T1 connects the first scanning signal WR, and source electrode and drain electrode is separately connected data-signal
Data-signal Data is transferred to by Data and first node g, first film transistor T1 under the control of the first scanning signal WR
The grid of second thin film transistor (TFT) T2；The grid of second thin film transistor (TFT) T2 connects first node g, and source electrode and drain electrode is separately connected
Second node s and power supply high voltage VDD；The grid of third thin film transistor (TFT) T3 connects the second scanning signal RD, source electrode and drain electrode
It is separately connected second node s and detection lines；The both ends of first capacitor Cst are separately connected first node g and second node s；Second
The both ends of capacitor Csen are separately connected detection lines and ground connection；The anode of Organic Light Emitting Diode D1 connects second node s, and cathode connects
Meet power supply low-voltage VSS.
Circuit for detecting mainly includes detecting pin ADC and reference voltage output terminal；It detects pin ADC and passes through first switch K1
Detection lines are connected, detecting pin ADC is connect by first switch K1 under the control of detection signal samp with detection lines, draws detecting
Foot ADC can obtain detecting voltage Vsamp from OLED pixel driving circuit by detection lines, and circuit for detecting passes through detecting pin
When ADC is sampled, electric current levels off to 0 in detection lines, at this time it is believed that detecting voltage Vsamp is equal to second node s namely second
The voltage Vs of thin film transistor (TFT) T2 source electrode, detecting pin ADC can further be connect with a channel of analog-digital converter (ADC) with
Conversion detecting voltage Vsamp, that is, Vs, can be used for the subsequent threshold voltage vt h for calculating the second thin film transistor (TFT) after analog-to-digital conversion,
Threshold voltage vt h can be used for offset data voltage；Reference voltage output terminal passes through second switch K2 connection detection lines, second switch
Reference voltage output terminal is connect by K2 under the control of control signal sen_pre with detection lines, makes reference voltage output terminal can be with
It is pre-charged by detection lines to OLED pixel driving circuit output reference voltage Vref.
It referring to fig. 2, is a kind of existing oled panel cabling schematic layout pattern.First scanning signal WR and second is provided
The controlling grid scan line of scanning signal RD is laterally extended along panel, is provided the data line of data-signal and is returned to detecing for detecting voltage
Survey line longitudinally extends along panel.The corresponding controlling grid scan line of the pixel-driving circuit of each sub-pixel, data in panel
Line and detection lines connection.In order to increase the aperture opening ratio of pixel, need to reduce to the greatest extent the quantity of cabling.
It is existing dot structure schematic diagram referring to Fig. 3.Each pixel is by multiple sub-pixel groups at each sub-pixel pair
Answer a pixel-driving circuit i.e. sub-pixel driving circuit (referring to Fig. 1).With dot structure composed by tetra- sub-pixels of RGBW
For, in order to increase the aperture opening ratio of pixel, current dot structure is electric using four sub- pixel drivers of tetra- sub-pixels of RGBW
Road shares a detection lines, and the detecting thin film transistor (TFT) in four sub- pixel-driving circuits is connected to same detection lines, this is detectd
Survey line is then connected to some channel of analog-digital converter.But when the drive for some sub-pixel being connected in this detection lines
Short circuit (such as detection lines and data line/power supply low-voltage VSS, power supply high voltage VDD short circuit) occurs for dynamic circuit, it will causes whole
Voltage in detection lines is affected, and return data is abnormal in detection lines, eventually leads to the compensation effect in normal pixel region
Fruit is abnormal (overcompensation or compensation are insufficient), generates apparent lines.
A and Fig. 4 B referring to fig. 4, Fig. 4 A are panel normal display state schematic diagram, and Fig. 4 B is panel through threshold voltage compensation
Display status diagram afterwards, the from left to right respectively display state of R sub-pixel, G sub-pixel and B sub-pixel.It can by Fig. 4 A
See, R sub-pixel causes OLED when longitudinal line display that can not light due to detecting thin film transistor (TFT) and ground (GND) short circuit；And
Short circuit does not occur for the detecting thin film transistor (TFT) of G sub-pixel and B sub-pixel, therefore can normally light when display.Panel is driven
When the threshold voltage vt h detecting of dynamic thin film transistor (TFT), due to detection lines short circuit, the R sub-pixel, the G that share a detection lines are caused,
Sub-pixel and B sub-pixel driving circuit detect voltage Vs less than actual value.By calculating threshold voltage vt h=data voltage
Vdata- voltage Vs, obtained threshold voltage vt h will be greater than the actual threshold voltage vt h of pixel-driving circuit.
When compensation, data voltage (init Vdata)+threshold value electricity of compensated data voltage (new Vdata)=original
Vth is pressed, obtained compensated data voltage will be greater than actual value, i.e., this is caused in normal pixel region as shown in Figure 4 B
Overcompensation, causes line defect, and when display produces bright line.
It is difficult accurate determination by observation or other measurement methods of taking pictures for there are the detection lines of short-circuit conditions
Its position, this problem of urgent need to resolve.
Summary of the invention
Therefore, the purpose of the present invention is to provide a kind of compensation method of oled panel pixel-driving circuit, OLED is prevented
Panel causes line defect due to overcompensation.
To achieve the above object, the present invention provides a kind of compensation methodes of oled panel pixel-driving circuit, comprising:
The pixel-driving circuit correspondence of Nth column pixel is connected with Nth column detection lines in step 10, oled panel, receives
The respective channel of the analog-digital converter of the detecting data of the Nth column detection lines is channel N, and the state of the Nth column detection lines is positive
When normal or abnormal, using channel N analog-digital converter correction data by the state respective identification of channel N be it is normal or different
Often；
Step 20, before being compensated using the detecting data of channel N, first identify the analog-digital converter school of channel N
Correction data is to judge the state of channel N；
Step 30, for normal channel N, directly obtain the pixel driver of Nth column pixel using the detecting data of channel N
Offset data needed for circuit.
It wherein, further include step 40, for abnormal channel N, according to avoiding the pre-defined rule of overcompensation from being compensated
The replacement data of data, to replace the pixel-driving circuit institute directly using the obtained Nth column pixel of detecting data of channel N
The offset data needed.
Wherein, in step 40, corresponding two are respectively obtained using the detecting data of two normal channels adjacent with channel N
A offset data, offset data needed for obtaining the pixel-driving circuit of Nth column pixel after two offset datas are averaged.
Wherein, in step 40, offset data needed for the pixel-driving circuit of Nth column pixel is defined as 0.
Wherein, in step 40, corresponding compensation number is obtained using with the detecting data of the adjacent a certain normal channel of channel N
According to using the offset data as offset data needed for the pixel-driving circuit of Nth column pixel.
Wherein, the offset data is the threshold voltage of the driving thin film transistor (TFT) of pixel-driving circuit.
Wherein, further includes: utilize analog-digital converter bearing calibration, obtain the mould in each channel of each analog-digital converter of panel
Number converter correction data judges the state in each channel and right by being compared to all analog-digital converter correction datas
Abnormal channel is positioned.
Wherein, the analog-digital converter correction data includes a bit wide as flag bit.
Wherein, when the flag bit is 0, indicate that the state in channel is normal；When the flag bit is 1, the shape in channel is indicated
State is abnormal.
To sum up, the compensation method of oled panel pixel-driving circuit of the invention, utilizes analog to digital conversion circuit calibration data
Abnormal passage is positioned, the accuracy determined channel status is greatly improved；Once judge the shape of a detection lines
State greatly shortens the time of judgement compared to the method for direct decision threshold voltage Vth；It eliminates since overcompensation causes
Line defect.
Detailed description of the invention
With reference to the accompanying drawing, by the way that detailed description of specific embodiments of the present invention, technical solution of the present invention will be made
And other beneficial effects are apparent.
In attached drawing,
Fig. 1 is a kind of existing OLED pixel drive circuit schematic diagram；
Fig. 2 is a kind of existing oled panel cabling schematic layout pattern；
Fig. 3 is existing dot structure schematic diagram；
Fig. 4 A is panel normal display state schematic diagram；
Fig. 4 B is display status diagram of the panel after threshold voltage compensation；
Fig. 5 is the analog-digital converter correction data K numeric distribution schematic diagram in each channel of analog-digital converter of FHD panel；
Fig. 6 is the analog-digital converter correction data B numeric distribution schematic diagram in each channel of analog-digital converter of FHD panel；
Fig. 7 is the flow chart of the compensation method of oled panel pixel-driving circuit of the present invention；
Fig. 8 is the implementation result schematic diagram of the compensation method of oled panel pixel-driving circuit of the present invention.
Specific embodiment
Referring to Fig. 7, it is the flow chart of the compensation method of oled panel pixel-driving circuit of the present invention, specifically includes that
The pixel-driving circuit correspondence of Nth column pixel is connected with Nth column detection lines in step 10, oled panel, receives
The respective channel of the analog-digital converter of the detecting data of the Nth column detection lines is channel N, and the state of the Nth column detection lines is positive
When normal or abnormal, using channel N analog-digital converter correction data by the state respective identification of channel N be it is normal or different
Often；
Step 20, before being compensated using the detecting data of channel N, first identify the analog-digital converter school of channel N
Correction data is to judge the state of channel N；
Step 30, for normal channel N, directly obtain the pixel driver of Nth column pixel using the detecting data of channel N
Offset data needed for circuit.
The present invention determines abnormal passage position by the judgement to analog-digital converter correction data.Each mould of panel
The analog-digital converter correction data in each channel of number converter can use analog-digital converter bearing calibration and obtain, by all
Analog-digital converter correction data be compared, judge the state in each channel and abnormal channel positioned.
Different channels and different moulds in the external compensation technology of oled panel pixel-driving circuit, due to analog-digital converter
There are the difference of gain (gain) and biasing (offset) between number converter, lead to analog-digital converter sampled pixel driving circuit
The voltage obtained afterwards can have differences with virtual voltage, it is therefore desirable to be corrected to analog-digital converter.Bearing calibration is to pass through
It gives analog-digital converter access multiple groups different reference voltage vref, find out input voltage and returns to the pass between coding (code)
System, such as gained relational expression can be expressed as y=Kx+B, wherein y is that analog-digital converter returns to coding, and x is that input voltage is big
It is small.K, B numerical value are analog-digital converter correction data.
Referring to Fig. 5 and Fig. 6, by taking the panel of FHD (1920*1080) resolution ratio as an example, Fig. 5 and Fig. 6 turn for calculated modulus
Analog-digital converter correction data K, the B numeric distribution in each channel of parallel operation can pass through if short circuit occur in the connected detection lines in channel
The judgement of logarithm difference, positions abnormal passage.
Assuming that analog-digital converter correction data format when not judging channel status as shown in following table one, uses
15bit bit wide carries out the storage of ADC correction data, stores analog-digital converter correction data K, B numerical value respectively；In order to increase to exception
The identification function in channel, analog-digital converter correction data format when judging channel status increase as shown in following table two
One bit wide is as flag bit (flag), if flag bit is 0, indicates that channel is normal；Flag bit is 1, indicates channel abnormal；Or
Using other flag bits, form is set.
Table one, analog-digital converter correction data format when not judging channel status
Table two, analog-digital converter correction data format when judging channel status
In step 30 of the invention, for normal channel N, Nth column picture directly is obtained using the detecting data of channel N
Offset data needed for the pixel-driving circuit of element.Offset data is specifically as follows the driving thin film transistor (TFT) of pixel-driving circuit
Threshold voltage.
The compensation method of oled panel pixel-driving circuit of the invention further includes step 40, for abnormal channel N, is pressed
According to the replacement data for avoiding the pre-defined rule of overcompensation from obtaining offset data, to replace directly using the detecting data of channel N
Offset data needed for the pixel-driving circuit of obtained Nth column pixel.
In step 40, it can choose corresponding using being respectively obtained to the detecting data of two adjacent normal channels of channel N
Two offset datas, compensation needed for obtaining the pixel-driving circuit of Nth column pixel after two offset datas are averaged
Data；Or offset data needed for the pixel-driving circuit of Nth column pixel is defined as 0 by selection；Or use and channel N phase
The detecting data of adjacent a certain normal channel obtains corresponding offset data, using the offset data as the pixel of Nth column pixel
Offset data needed for driving circuit.
The channel status of table three, channel N-1, channel N and channel N+1
Channel N-1, channel N and the channel N+1 of analog-digital converter pass through N-1 column, Nth column and N+1 column detecting respectively
Line connects the pixel-driving circuit of N-1 column, Nth column and N+1 column pixel, and specific pixel-driving circuit can refer to Fig. 1, detect
Survey line can be connected to detecting thin film transistor (TFT) i.e. third thin film transistor (TFT) T3 and detect the voltage Vs of second node s, that is,
Drive the thin film transistor (TFT) i.e. source voltage Vs of the second thin film transistor (TFT) T2.
Illustrate use of the present invention for the channel status of channel N-1, channel N and channel N+1 shown in the table three below
The detailed process of offset data needed for the detecting data of channel N obtains the pixel-driving circuit of Nth column pixel, offset data tool
Body is by taking threshold voltage vt h as an example.
If flag bit flag is 0, indicate that channel is normal；Flag bit flag is 1, indicates channel abnormal.
Threshold voltage vt h calculation processes are as follows:
Before carrying out threshold voltage vt h calculating, needs to judge the channel for obtaining detecting data, pass through abnormal passage
Obtained detecting data is abnormity detecting data, is normal detecting data by the detecting data that normal channel obtains, by different
The detecting data that normal open road obtains is that abnormity detecting data cannot be used for threshold voltage vt h calculating, is needed according to scheduled rule
Threshold voltage vt h needed for abnormal passage is replaced with into other data.By taking the sub-pixel in same a line Nth column detection lines as an example:
The corresponding threshold voltage vt h of abnormal passage can take threshold voltage corresponding to the channel of two neighboring sub-pixel
The average value of Vth:
If the corresponding threshold voltage vt h of flag=0, Vth (N)=Vth (N), normal channel N can be utilized according to original mode
The detecting data of voltage Vs is normally calculated；
If flag=1, Vth (N)=(Vth (N-1)+Vth (N+1))/2.
Present invention implementation calculation method is without being limited thereto, other calculation methods can also be used.
The corresponding threshold voltage vt h of abnormal passage can take 0:
If the corresponding threshold voltage vt h of flag=0, Vth (N)=Vth (N), normal channel N can be utilized according to original mode
The detecting data of voltage Vs is normally calculated；
If flag=1, Vth (N)=0.
The corresponding threshold voltage vt h of abnormal passage can take the value in adjacent a certain channel:
If the corresponding threshold voltage vt h of flag=0, Vth (N)=Vth (N), normal channel N can be utilized according to original mode
The detecting data of voltage Vs is normally calculated；
If flag=1, Vth (N)=Vth (N-1) or the corresponding threshold voltage vt h of Vth (N+1), abnormal passage N can take
The adjacent corresponding threshold voltage vt h of channel N-1 or channel N+1.
The present invention determines abnormal passage position using analog-digital converter correction data, replaces according to pre-defined rule abnormal
The abnormity detecting data in channel, the offset data substituted implement compensation.
It is the implementation result schematic diagram of the compensation method of oled panel pixel-driving circuit of the present invention, with figure referring to Fig. 8
After 4A and Fig. 4 B comparison is it is found that use processing mode of the invention to situation shown in Fig. 4 A and Fig. 4 B, B sub-pixel, G sub-pixel
The bright line as caused by overcompensation disappears.
To sum up, the compensation method of oled panel pixel-driving circuit of the invention, utilizes analog to digital conversion circuit calibration data
Abnormal passage is positioned, the accuracy determined channel status is greatly improved；Once judge a detection lines (simultaneously
Connect R, G, B, four lines of tetra- sub-pixels of W) state greatly shortened compared to the method for direct decision threshold voltage Vth
The time of judgement；Eliminate the line defect as caused by overcompensation.
The above for those of ordinary skill in the art can according to the technique and scheme of the present invention and technology
Other various corresponding changes and modifications are made in design, and all these change and modification all should belong to the appended right of the present invention
It is required that protection scope.
Claims (9)
1. a kind of compensation method of oled panel pixel-driving circuit characterized by comprising
The pixel-driving circuit correspondence of Nth column pixel is connected with Nth column detection lines in step 10, oled panel, receives the N
The respective channel of the analog-digital converter of the detecting data of column detection lines is channel N, and the state of the Nth column detection lines is normal or different
Chang Shi, using channel N analog-digital converter correction data by the state respective identification of channel N be it is normal or abnormal；
Step 20, before being compensated using the detecting data of channel N, first identify the analog-digital converter correction number of channel N
The state of channel N is judged accordingly；
Step 30, for normal channel N, directly obtain the pixel-driving circuit of Nth column pixel using the detecting data of channel N
Required offset data.
2. the compensation method of oled panel pixel-driving circuit as described in claim 1, which is characterized in that further include: step
40, straight to replace according to the replacement data for avoiding the pre-defined rule of overcompensation from obtaining offset data for abnormal channel N
Offset data needed for connecing the pixel-driving circuit using the obtained Nth column pixel of detecting data of channel N.
3. the compensation method of oled panel pixel-driving circuit as claimed in claim 2, which is characterized in that in step 40, make
Corresponding two offset datas are respectively obtained with the detecting data of two adjacent normal channels of channel N, by two compensation numbers
According to offset data needed for the pixel-driving circuit for obtaining Nth column pixel after being averaged.
4. the compensation method of oled panel pixel-driving circuit as claimed in claim 2, which is characterized in that, will in step 40
Offset data needed for the pixel-driving circuit of Nth column pixel is defined as 0.
5. the compensation method of oled panel pixel-driving circuit as claimed in claim 2, which is characterized in that in step 40, make
Corresponding offset data is obtained with the detecting data of a certain normal channel adjacent with channel N, using the offset data as Nth column
Offset data needed for the pixel-driving circuit of pixel.
6. the compensation method of oled panel pixel-driving circuit as described in claim 1, which is characterized in that the offset data
For the threshold voltage of the driving thin film transistor (TFT) of pixel-driving circuit.
7. the compensation method of oled panel pixel-driving circuit as described in claim 1, further includes: utilize analog-digital converter school
Correction method obtains the analog-digital converter correction data in each channel of each analog-digital converter of panel, by turning to all moduluses
Parallel operation correction data is compared, and is judged the state in each channel and is positioned to abnormal channel.
8. the compensation method of oled panel pixel-driving circuit as described in claim 1, the analog-digital converter correction data
Bit wide including one as flag bit.
9. the compensation method of oled panel pixel-driving circuit as claimed in claim 8 when the flag bit is 0, indicates logical
The state in road is normal；When the flag bit is 1, the abnormal state in channel is indicated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910075944.8A CN109637445A (en) | 2019-01-25 | 2019-01-25 | The compensation method of oled panel pixel-driving circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910075944.8A CN109637445A (en) | 2019-01-25 | 2019-01-25 | The compensation method of oled panel pixel-driving circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109637445A true CN109637445A (en) | 2019-04-16 |
Family
ID=66063960
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910075944.8A Pending CN109637445A (en) | 2019-01-25 | 2019-01-25 | The compensation method of oled panel pixel-driving circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109637445A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111429848A (en) * | 2020-04-13 | 2020-07-17 | 深圳市华星光电半导体显示技术有限公司 | Display panel external compensation device, display panel and voltage compensation method |
| CN111524197A (en) * | 2020-04-01 | 2020-08-11 | 武汉精立电子技术有限公司 | Method and device for detecting and repairing abnormal pixels of Microled or Miniled in real time |
| WO2021115307A1 (en) * | 2019-12-10 | 2021-06-17 | 京东方科技集团股份有限公司 | Method and apparatus for processing data, and display panel |
| WO2021120290A1 (en) * | 2019-12-16 | 2021-06-24 | 深圳市华星光电半导体显示技术有限公司 | Pixel circuit and driving method therefor, and display panel |
| CN113393811A (en) * | 2020-03-12 | 2021-09-14 | 咸阳彩虹光电科技有限公司 | Novel brightness unevenness compensation method and device and display panel |
| CN115346473A (en) * | 2022-05-25 | 2022-11-15 | 惠科股份有限公司 | Display panel, driving circuit and driving method |
| WO2024020943A1 (en) * | 2022-07-28 | 2024-02-01 | 京东方科技集团股份有限公司 | Compensation method and device for display device, and storage medium |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101718562A (en) * | 2009-11-20 | 2010-06-02 | 电子科技大学 | Method for real-time correcting error of multi-channel high-speed parallel alternative acquisition system |
| WO2015162650A1 (en) * | 2014-04-23 | 2015-10-29 | 株式会社Ｊｏｌｅｄ | Display device and method of controlling same |
| CN106328061A (en) * | 2016-10-14 | 2017-01-11 | 深圳市华星光电技术有限公司 | OLED pixel mixing and compensating circuit and method |
| KR20170015596A (en) * | 2015-07-29 | 2017-02-09 | 엘지디스플레이 주식회사 | Controller, organic light emitting display device and the method for driving the organic light emitting display device |
| CN107181489A (en) * | 2016-03-11 | 2017-09-19 | 北京君正集成电路股份有限公司 | A kind of analog-to-digital conversion calibration method and device |
| CN107633810A (en) * | 2017-10-27 | 2018-01-26 | 京东方科技集团股份有限公司 | Image element circuit compensation method and device, display panel and display device |
-
2019
- 2019-01-25 CN CN201910075944.8A patent/CN109637445A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101718562A (en) * | 2009-11-20 | 2010-06-02 | 电子科技大学 | Method for real-time correcting error of multi-channel high-speed parallel alternative acquisition system |
| WO2015162650A1 (en) * | 2014-04-23 | 2015-10-29 | 株式会社Ｊｏｌｅｄ | Display device and method of controlling same |
| KR20170015596A (en) * | 2015-07-29 | 2017-02-09 | 엘지디스플레이 주식회사 | Controller, organic light emitting display device and the method for driving the organic light emitting display device |
| CN107181489A (en) * | 2016-03-11 | 2017-09-19 | 北京君正集成电路股份有限公司 | A kind of analog-to-digital conversion calibration method and device |
| CN106328061A (en) * | 2016-10-14 | 2017-01-11 | 深圳市华星光电技术有限公司 | OLED pixel mixing and compensating circuit and method |
| CN107633810A (en) * | 2017-10-27 | 2018-01-26 | 京东方科技集团股份有限公司 | Image element circuit compensation method and device, display panel and display device |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021115307A1 (en) * | 2019-12-10 | 2021-06-17 | 京东方科技集团股份有限公司 | Method and apparatus for processing data, and display panel |
| US11645978B2 (en) | 2019-12-10 | 2023-05-09 | Hefei Xinsheng Optoelectronics Technology Co., Ltd. | Data processing method and device, and display panel |
| WO2021120290A1 (en) * | 2019-12-16 | 2021-06-24 | 深圳市华星光电半导体显示技术有限公司 | Pixel circuit and driving method therefor, and display panel |
| CN113393811A (en) * | 2020-03-12 | 2021-09-14 | 咸阳彩虹光电科技有限公司 | Novel brightness unevenness compensation method and device and display panel |
| CN113393811B (en) * | 2020-03-12 | 2022-06-28 | 咸阳彩虹光电科技有限公司 | Luminance unevenness compensation method and device and display panel |
| CN111524197A (en) * | 2020-04-01 | 2020-08-11 | 武汉精立电子技术有限公司 | Method and device for detecting and repairing abnormal pixels of Microled or Miniled in real time |
| CN111429848A (en) * | 2020-04-13 | 2020-07-17 | 深圳市华星光电半导体显示技术有限公司 | Display panel external compensation device, display panel and voltage compensation method |
| CN115346473A (en) * | 2022-05-25 | 2022-11-15 | 惠科股份有限公司 | Display panel, driving circuit and driving method |
| CN115346473B (en) * | 2022-05-25 | 2023-10-24 | 惠科股份有限公司 | Display panel, driving circuit and driving method |
| WO2024020943A1 (en) * | 2022-07-28 | 2024-02-01 | 京东方科技集团股份有限公司 | Compensation method and device for display device, and storage medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109637445A (en) | The compensation method of oled panel pixel-driving circuit | |
| US10297201B2 (en) | Compensation method of cathode voltage drop of organic light emitting diode display device and pixel driving circuit | |
| US10741146B2 (en) | Electroluminescent display screen and brightness uniformity compensation method and system thereof | |
| US9947271B2 (en) | Threshold voltage detection circuit for OLED display device | |
| US10565909B2 (en) | Test method for display panel, and test device | |
| CN109697956B (en) | Organic light emitting display device and driving method thereof | |
| US8749457B2 (en) | Organic electroluminescence display device manufacturing method and organic electroluminescence display device | |
| KR102668276B1 (en) | Method of detecting a pixel defect | |
| US8089477B2 (en) | Display device and method for controlling the same | |
| CN101261803B (en) | Organic EL display | |
| CN108492768B (en) | Panel crack detection structure and detection method | |
| US11348518B2 (en) | Method for driving display panel and display device | |
| US11145244B2 (en) | Display device and method of driving the same | |
| CN100362553C (en) | Method for inspecting organic el substrate and organic el display device | |
| KR20080042751A (en) | Active matrix display device using organic light-emitting element and method of driving active matrix display device using organic light-emitting element | |
| EP2531994B1 (en) | Display device | |
| US10762842B2 (en) | Controller, display device and method for controlling to reduce degradation of image quality with use | |
| CN111899691B (en) | External compensation circuit, array substrate and detection method | |
| KR20140082503A (en) | Device for sensing control of organic light emitting display device and method for sensing using the same | |
| US20220215789A1 (en) | Display device and method of driving the same | |
| CN110197645B (en) | Driving method and compensation method of pixel circuit | |
| CN110853575A (en) | Voltage regulation method of display panel and storage medium | |
| US11817058B2 (en) | Light emitting display device and method of driving the same | |
| US11922839B2 (en) | Display device and operating method therefor | |
| US20230154397A1 (en) | Degradation compensation circuit and display device including the same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190416 |
|
| WD01 | Invention patent application deemed withdrawn after publication |