CN1567416A - Current driving device and method for active organic light-emitting diode - Google Patents
Current driving device and method for active organic light-emitting diode Download PDFInfo
- Publication number
- CN1567416A CN1567416A CNA031483623A CN03148362A CN1567416A CN 1567416 A CN1567416 A CN 1567416A CN A031483623 A CNA031483623 A CN A031483623A CN 03148362 A CN03148362 A CN 03148362A CN 1567416 A CN1567416 A CN 1567416A
- Authority
- CN
- China
- Prior art keywords
- pixel
- sub
- line
- current
- organic light
- 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
- Electroluminescent Light Sources (AREA)
- Control Of El Displays (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
It is a kind of current driving apparatus and method of active organic LED. It comprises two neighboring sub-pixels (even sub-pixel and odd sub-pixel); each sub-pixel consists of a writing element, a switch element, a drive element, a control element, a storing element, and an illuminating element. The drive line consists of odd enabled line of odd sub-pixel, even enabled line of even sub-pixel, a datawire shared by odd sub-pixel and even sub-pixel, a scanning wire, a power supply cord, and a common cathode line. It can be used to improve the screen image uneven condition of active organic LED, and save the number of datawire.
Description
Technical field
The present invention relates to a kind of current driving device and method thereof of positive type organic light emitting diode display, particularly a kind ofly improve drive unit and the method thereof that the uneven data current of active organic light-emitting diode panel image writes (Current Programmed).
Background technology
Organic light emitting display can be divided into passive type and active by type of drive.And so-called active driving organic light emitting display is to utilize thin film transistor (TFT), and collocation electric capacity stores signal, controls the intensity gray scale performance of organic light emitting display.
Though the cost of manufacture and the technical threshold of passive organic light-emitting display are lower, are limited by type of drive, resolution can't improve, so the size limitations of application product is in about 5 inches, and product will be limited in the undersized market of low resolution.Then must be if will obtain high meticulous and big picture in the active drive mode, so-called active driving is to store signal with electric capacity, so after sweep trace was scanned, pixel still can keep original brightness; As for passive driving, only be scanned line options to pixel just can be lighted.Therefore under the active drive mode, organic light emitting display does not need to be driven into very high brightness, therefore can reach preferable life-span performance, can reach high-resolution demand yet.Organic light emitting display combination film transistor technology can be realized active driving organic light emitting display, can meet the fluency of playing for picture on the present monitor market, and the more and more higher requirement of resolution, demonstrated fully the above-mentioned advantageous characteristic of organic light emitting display.
The technology of growth thin film transistor (TFT) on glass substrate can be amorphous silicon (amorphoussilicon; A-Si) processing procedure and low temperature polycrystalline silicon (Low Temperature poly-silicon; LTPS) processing procedure, the maximum difference of low-temperature polysilicon film transistor and amorphous silicon film transistor is its electrical and complicated and simple difference of processing procedure.Low-temperature polysilicon film transistor has higher carrier mobility, and higher carrier mobility means that thin film transistor (TFT) can provide electric current more fully, however on its processing procedure but than very complicated; The amorphous silicon membrane transistor is then opposite, though the carrier mobility of amorphous silicon not as low temperature polycrystalline silicon, because its processing procedure is simpler and ripe, therefore has good competitive edge on cost.
So because the restriction of low temperature polycrystalline silicon processing procedure ability, its critical voltage of thin-film transistor element and the electron mobility that cause manufacturing to be come out can produce variation, so the characteristic of each thin-film transistor element can be different.When drive system is used aanalogvoltage modulation mode with the performance GTG, characteristic difference because of the thin film transistor (TFT) of different pixels, even so import identical data voltage signal, but can make Organic Light Emitting Diode produce different output currents, cause the brightness difference that the organic light-emitting diode element of different pixels sends on the display panel.This phenomenon can make organic LED panel demonstrate the bad image of GTG, the homogeneity of havoc panel image.
So, for solving the shortcoming of above-mentioned panel image uniformity difference, U.S. Pat 6,229,506 " Active Matrix Light Emitting Diode Pixel Structure AndConcomitant Method ", proposed a kind of mechanism of using data current to write, the variation of its critical voltage of compensation film transistor unit and electron mobility is to improve the homogeneity of image.As shown in Figure 3, be U.S. Pat 6,229, the circuit diagram of 506 pixel.This circuit operation principle is described below:
When scanning, transistor P1 and transistor P3 are conducting (ON), transistor N1 is for ending (OFF), this moment the transistor P1 that can flow through of the data current (Idata) on the data line 31, if this data current (Idata) is not equal to the electric current (IP2) of the transistor P2 that flows through, then have an electric current (Ic) storage unit Cs is carried out charge or discharge, its size of current equals data current (Idata) and flows through the poor of transistor P2 electric current (IP2).
So the action of storage unit Cs charge or discharge can make the electric current (I of the transistor P2 that flows through
P2) increase or reduce, and the action of storage unit Cs charge or discharge can last till the size of current (I as the transistor P2 that flows through always
P2) equal data current (I
Data) time.Size of current (I as the transistor P2 that flows through
P2) equal data current (I
Data) time, the voltage difference at storage unit Cs two ends just in time can provide transistor P2 circulating current (I
P2) equal data current (I
Data) time required Vsg (source electrode, grid voltage poor).Afterwards transistor P1 and transistor P3 are ended, can finish scanning, and enter the demonstration stage.After entering the demonstration stage, making transistor N1 is conducting, and the S of transistor P2 end (source terminal) is connected to power supply line 33, because the voltage difference at storage unit Cs two ends just in time can provide transistor P2 circulating current (I
P2) equal data current (I
Data) time required Vsg (source electrode, grid voltage poor), the size of current (I of transistor P2 so the electric current of the Organic Light Emitting Diode of flowing through (OLED) 34 can equal to flow through
P2) be data current (I
Data) size, and make Organic Light Emitting Diode 34 send corresponding data current (I
Data) big or small brightness.
The positive type organic light emitting diode display of above-mentioned image element circuit technology, it drives framework as shown in Figure 4.The initial of a menu frame 40 (1Frame=1/60sec) is the write activity 401 that begins to carry out present menu frame 40 data currents from article one sweep trace, required Vsg when making the voltage difference at storage unit Cs two ends in the pixel just in time can provide P2 circulating current (Ip2) to equal data current (Idata).Article one, after sweep trace 32 is finished write activity 401, and then second sweep trace 32 carries out the write activity 401 of present menu frame 40 data currents, and the organic light-emitting diode element 34 on this moment article one sweep trace 32 can be by being same as the electric current that writes the data current size, make organic light-emitting diode element 34 actions on article one sweep trace 32 show the brightness of 402 present pictures.
After second sweep trace 32 is finished write activity 401, can take turns the write activity 401 that carries out present menu frame 40 data currents by the 3rd sweep trace 32, and the organic light-emitting diode element 34 on this moment second sweep trace can be by being same as the electric current that writes the data current size, make organic light-emitting diode element 34 on the second sweep trace 32 show the brightness of 402 present pictures.
Carry out a last sweep trace 32 in regular turn always and finish the write activity 401 of menu frame 40 data currents, the write activity 401 of next menu frame 40 data current is carried out in accent by article one sweep trace 32 again.
But above-mentioned patent must be used colored low-temperature polysilicon film transistor (C-TFT LTPS) processing procedure of P type (P-Type) and N type (N-Type), and the complicacy of processing procedure can improve relatively, thereby manufacturing cost also increases relatively.
Summary of the invention
So, fundamental purpose of the present invention, be to solve above-mentioned traditional shortcoming, for avoiding the existence of this defective, the present invention can realize the type of drive that data current writes, with the variation of its critical voltage of compensation film transistor unit and electron mobility, reach and improve the uneven phenomenon of active organic light-emitting diode panel image.Can save simultaneously the number of data line, only need the number of half data line of Known designs, thereby, manufacturing cost can be saved.
For achieving the above object, the drive unit that the present invention proposes is one or two adjacent sub-pixel (odd number sub-pixel and even sub-pixel), and each sub-pixel drive unit all comprises 4 thin film transistor (TFT)s and 1 electric capacity; Again, each sub-pixel comprises a write element, and one switches element, a driving element, one control element, one storage unit, a light-emitting component, driver circuit then comprise the odd number enable line (Odd Line Enable) of odd number sub-pixel, the even number enable line of even sub-pixel (Even Line Enable), the data line that one odd number sub-pixel and even sub-pixel are shared, one scan line, a power supply line, cathode line altogether.
Description of drawings
Fig. 1 is a device synoptic diagram of the present invention.
Fig. 2 is the driving framework of device shown in Figure 1.
Fig. 3 is a U.S. Pat 6,229,506 image element circuit synoptic diagram.
Fig. 4 is the driving framework of image element circuit shown in Figure 3.
Embodiment
Relevant detailed content of the present invention and technical descriptioon, existing accompanying drawings is as follows:
Seeing also shown in Figure 1ly, is device synoptic diagram of the present invention.As shown in the figure: the drive unit that the present invention proposes is one or two adjacent sub-pixel (odd number sub-pixel 10 and even sub-pixel 20), and each sub-pixel drive unit all comprises 4 thin film transistor (TFT)s and 1 electric capacity; Odd number sub-pixel 10 and even sub-pixel 20 respectively comprise a write element T1 and a T1 ', and one switches elements T 2 and T2 ', a driving element T3 and a T3 ', a control element T4 and a T4 ', a storage unit C and a C ', a light-emitting component 11 and 21; Driver circuit then comprises the odd number enable line 101 and a power supply line 52 of odd number sub-pixel 10, the even number enable line 201 of even sub-pixel 20 and a power supply line 52 ', the data line 50 that one odd number sub-pixel 10 and even sub-pixel 20 are shared, one scan line 51, cathode line 53 altogether.
Wherein, the source electrode of this write element T1, T1 ' is connected with data line 50; The grid of this switching device T2, T2 ' is connected with the grid of above-mentioned write element T1, T1 ', and its source electrode is connected with data line 50; The grid of this driving element T3, T3 ' is connected with the drain electrode of above-mentioned write element T1, T1 ', and its source electrode is connected with above-mentioned power supply line 52,52 '; The grid of this control element T4, T4 ' is connected with above-mentioned sweep trace 51, and its source electrode is connected with above-mentioned odd number enable line 101 (even number enable line 201), and its drain electrode is connected with the grid of above-mentioned switching device T2, T2 '.
And this storage unit C, C ' have two ends, and an end is connected with above-mentioned driving element T3, the source electrode of T3 ', and the grid of the other end and above-mentioned driving element T3, T3 ' is connected with the junction of the drain electrode of write element T2, T2 '; These light-emitting component 11,21 1 ends are anodal, are connected with the grid of above-mentioned driving element T3, T3 ', and the other end is a negative pole, is connected with above-mentioned common cathode line 53.
Driving framework of the present invention is that the cycle (1Frame=1/60sec) with a menu frame 60 is divided into during two as shown in Figure 2, and one is (Display Period) 602 during showing for (Write Period) during writing 601.
During writing 601, common cathode line 53 is risen to noble potential (Vdd), light-emitting components 11 and 21 all on the panel can stop the shinny of last picture, and begin to carry out the write activity of present menu frame 60 data currents from article one sweep trace 51, required Vsg when making the voltage difference at storage unit in the pixel (C and C ') two ends just in time can provide the electric current of driving element T3 and T3 ' circulation to equal data current (Idata) (source electrode, grid voltage poor) carries out the write activity that a last sweep trace 51 is finished data current in regular turn always.Finish during the writing of each sweep trace 51 after 601, again common cathode line 53 is reduced to zero potential (GND) and during entering demonstration 602, light-emitting component 11 on the panel in each pixel and 21 can be by being same as the electric current that writes the data current size, the brightness that makes the light-emitting component 11 and 21 of display send present picture.
Operating principle of the present invention is described as follows: during writing 601 o'clock, because common cathode line 53 rises to noble potential (Vdd), light-emitting component 11 and 21 can't be shinny because of being in reverse blas, the electric current vanishing of flow through light-emitting component 11 and 21.
So when sweep trace 51 was sent scanning drive signal, the control element T4 ' of 10 control element T4 and even sub-pixel 20 was conducting in the odd number sub-pixel; So, signal on the odd number enable line 101 can make write element T1 and the switching device T2 conducting in the odd number sub-pixel 10 by the conducting of control element T4, and the conducting of the signal on the even number enable line 201 by control element T4 ' ends write element T1 ' and switching device T2 ' in the even sub-pixel 20.Meanwhile, can send the data current (Idata_odd) of odd number sub-pixel 10 on the data line 50.
Again, if the data current (Idata_odd) on the data line 50 is not equal to the electric current (IT3) of the driving element T3 that flows through at this moment, then have an electric current (Ic) storage unit C is carried out the action of charge or discharge, its size of current equals electric current (IT3) poor of data current (Idata_odd) and the driving element T3 that flows through.The action of storage unit C charge or discharge can make the electric current (IT3) of the driving element T3 that flows through increase or reduce, and the action of storage unit C charge or discharge can last till when the size of current (IT3) of the driving element T3 that flows through equals data current (Idata_odd) always.And, when the size of current (IT3) of the driving element T3 that flows through equals data current (Idata_odd), this moment storage unit C two ends voltage difference required Vsg just in time can provide driving element T3 circulating current (IT3) to equal data current (Idata_odd) time.
Next, the signal on the odd number enable line 101 can make write element T1 and switching device T2 in the odd number sub-pixel 10 end by the conducting of control element T4; And the conducting of the signal on the even number enable line 201 by control element T4 ' makes write element T1 ' and switching device T2 ' conducting in the even sub-pixel 20.At the same time, can send the data current (Idata_odd) of even sub-pixel 20 on the data line 50.
If this moment, the data current (Idata_even) on the data line 50 was not equal to the electric current (IT3 ') of the driving element T3 ' that flows through, then have an electric current (Ic ') storage unit C ' is carried out the action of charge or discharge, its size of current equals electric current (IT3 ') poor of data current (Idata_even) and the driving element T3 ' that flows through.The action of storage unit C ' charge or discharge can make the electric current (IT3 ') of the T3 ' that flows through increase or reduce, and the action of storage unit Cs ' charge or discharge can last till always that size of current as the driving element T3 ' that flows through (IT3 ') is when equaling data current (Idata_even).And when the size of current of the driving element T3 ' that flows through (IT3 ') when equaling data current (Idata_even), this moment, the voltage difference at storage unit C ' two ends just in time can provide driving element T3 ' circulating current (IT3 ') required Vsg ' when equaling data current (Idata_even).
Finish after the writing of each sweep trace 51, again common cathode line 53 is reduced to zero potential and during entering demonstration 602, light-emitting component 11 and 21 is in along bias voltage and conducting is shinny, because required Vsg and Vsg ' when the voltage difference at storage unit Cs and Cs ' two ends just in time can provide driving element T3 and T3 ' circulating current to equal data current, so the light-emitting component 11 on the panel in each pixel and 21 can make the light-emitting component 11 and 21 of display send the required brightness of present picture by being same as the electric current of the size of current that writes data.
Comprehensive above explanation, the current driving device of active organic light-emitting diode has following advantage:
(1) the present invention can realize the type of drive that data current writes, and with the variation of its critical voltage of compensation film transistor unit and electron mobility, reaches and improves the uneven phenomenon of active organic light-emitting diode panel image.
(2) the present invention can save the number of data line 50, only needs the number of half data line 50 of Known designs, thereby, can save circuit cost, reduce modular system pressing manufacturing cost, increase the robustness of modular system connection etc.
(3) the present invention must not use colored low-temperature polysilicon film transistor (C-TFT LTPS) processing procedure of P type (P-Type) and N type (N-Type), and the cost of manufacturing can reduce.
(4) the technology of the present invention can make organic light-emitting diode element be in the situation of reverse blas for some time when operation, under this operator scheme, can increase the life-span that organic light-emitting diode element uses.
Obviously, for a person skilled in the art, under the prerequisite that does not deviate from the spirit and scope of the present invention, can make various changes and variation to the present invention.Therefore, various change of the present invention, the content that changes by appending claims and equivalent thereof contain.
Claims (7)
1. the current driving device of an active organic light-emitting diode, described drive unit comprises one or two adjacent sub-pixel, i.e. odd number sub-pixel (10) and even sub-pixel (20);
It is characterized in that: the drive unit of each described sub-pixel comprises:
The odd number enable line (101) of described odd number sub-pixel (10), the even number enable line (201) of described even sub-pixel (20);
The data line (50) that one described odd number sub-pixel (10) and described even sub-pixel (20) are shared;
One scan line (51);
One power supply line (52), (52 ');
Have cathode line (53) altogether;
One write element (T1), (T1 '), the source electrode of said write element (T1), (T1 ') is connected with described data line (50);
One switches element (T2), (T2 '), and the grid of the grid of described switching device (T2), (T2 ') and said write element (T1), (T1 ') is connected, and its source electrode is connected with described data line (50);
One driving element (T3), (T3 '), the drain electrode of the grid of described driving element (T3), (T3 ') and said write element (T1), (T1 ') is connected, and its source electrode was connected with described power supply line (52), (52 ');
One control element (T4), (T4 '), the grid of described control element (T4), (T4 ') is connected with described sweep trace (51), its source electrode is connected with described odd number enable line (101) or described even number enable line (201), and its drain electrode is connected with the grid of described switching device (T2), (T2 ');
One storage unit (C), (C '), described storage unit (C), (C ') have two ends, the source electrode of one end and described driving element (T3), (T3 ') is connected, and the junction of the drain electrode of the grid of the other end and described driving element (T3), (T3 ') and said write element (T1), (T1 ') is connected;
One light-emitting component (11), (21), an end of described light-emitting component (11), (21) are anodal, are connected with the grid of described driving element (T3), (T3 '), and the other end is a negative pole, is connected with described common cathode line (53).
2. the current driving device of active organic light-emitting diode according to claim 1 is characterized in that, said write element (T1), (T1 ') be a thin film transistor (TFT).
3. the current driving device of active organic light-emitting diode according to claim 1 is characterized in that, described switching device (T2), (T2 ') be a thin film transistor (TFT).
4. the current driving device of active organic light-emitting diode according to claim 1 is characterized in that, described driving element (T3), (T3 ') be a thin film transistor (TFT).
5. the current driving device of active organic light-emitting diode according to claim 1 is characterized in that described control element (T4), (T4 ') are a thin film transistor (TFT).
6. the current driving device of active organic light-emitting diode according to claim 1 is characterized in that, described storage unit (C), (C ') be a storage capacitors.
7. the current driving method of an active organic light-emitting diode is characterized in that, described driving method comprises:
Cycle with a menu frame (60) during driving is divided into during two, and one is (601) during writing, and one is (602) during showing;
During said write (601), common cathode line (53) is risen to noble potential, light-emitting component (11), (21) all on the panel can stop the shinny of last picture, and beginning to carry out the write activity of the data current of present described menu frame (60) from article one sweep trace (51), source electrode, grid voltage required when making the voltage difference at storage unit (C) in the pixel, (C ') two ends just in time can provide the electric current of driving element (T3), (T3 ') and circulation to equal data current are poor;
(601) afterwards during finishing the said write of each described sweep trace (51), again described common cathode line (53) is reduced to zero potential and during entering described demonstration (602), described light-emitting component (11) on the panel in each pixel, (21) can make described light-emitting component (11), (21) of display send the required brightness of picture by being same as the electric current that writes described data current size.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031483623A CN100365690C (en) | 2003-06-30 | 2003-06-30 | Current driving device and method for active organic light-emitting diode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031483623A CN100365690C (en) | 2003-06-30 | 2003-06-30 | Current driving device and method for active organic light-emitting diode |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1567416A true CN1567416A (en) | 2005-01-19 |
| CN100365690C CN100365690C (en) | 2008-01-30 |
Family
ID=34472263
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031483623A Expired - Fee Related CN100365690C (en) | 2003-06-30 | 2003-06-30 | Current driving device and method for active organic light-emitting diode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100365690C (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101868093A (en) * | 2010-06-08 | 2010-10-20 | 友达光电股份有限公司 | Driving circuit used for current driving element and luminous device |
| CN101777319B (en) * | 2010-02-05 | 2012-05-02 | 深超光电（深圳）有限公司 | Pixel structure |
| CN101192372B (en) * | 2006-11-28 | 2012-07-04 | 奇美电子股份有限公司 | Display panel and its structure |
| CN101174388B (en) * | 2006-10-31 | 2012-07-04 | 奇美电子股份有限公司 | NTSC band rejection filter with parallel structure and filtering method thereof |
| CN104112427A (en) * | 2014-07-21 | 2014-10-22 | 京东方科技集团股份有限公司 | Pixel circuit, driving method of pixel circuit and display device |
| CN104134426A (en) * | 2014-07-07 | 2014-11-05 | 京东方科技集团股份有限公司 | Pixel structure and driving method thereof, and display device |
| US9318053B2 (en) | 2005-07-04 | 2016-04-19 | Semiconductor Energy Laboratory Co., Ltd. | Semiconductor device and driving method thereof |
| CN108269532A (en) * | 2018-01-19 | 2018-07-10 | 友达光电股份有限公司 | Display device |
| CN114325142A (en) * | 2020-09-30 | 2022-04-12 | 瀚宇彩晶股份有限公司 | Method for testing touch display panel |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6229506B1 (en) * | 1997-04-23 | 2001-05-08 | Sarnoff Corporation | Active matrix light emitting diode pixel structure and concomitant method |
| JP2001109432A (en) * | 1999-10-06 | 2001-04-20 | Pioneer Electronic Corp | Driving device for active matrix type light emitting panel |
| US6864863B2 (en) * | 2000-10-12 | 2005-03-08 | Seiko Epson Corporation | Driving circuit including organic electroluminescent element, electronic equipment, and electro-optical device |
| JP2003043995A (en) * | 2001-07-31 | 2003-02-14 | Matsushita Electric Ind Co Ltd | Active matrix type oled display device and its driving circuit |
-
2003
- 2003-06-30 CN CNB031483623A patent/CN100365690C/en not_active Expired - Fee Related
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9318053B2 (en) | 2005-07-04 | 2016-04-19 | Semiconductor Energy Laboratory Co., Ltd. | Semiconductor device and driving method thereof |
| CN101174388B (en) * | 2006-10-31 | 2012-07-04 | 奇美电子股份有限公司 | NTSC band rejection filter with parallel structure and filtering method thereof |
| CN101192372B (en) * | 2006-11-28 | 2012-07-04 | 奇美电子股份有限公司 | Display panel and its structure |
| CN101777319B (en) * | 2010-02-05 | 2012-05-02 | 深超光电（深圳）有限公司 | Pixel structure |
| CN101868093A (en) * | 2010-06-08 | 2010-10-20 | 友达光电股份有限公司 | Driving circuit used for current driving element and luminous device |
| CN101868093B (en) * | 2010-06-08 | 2012-11-28 | 友达光电股份有限公司 | Driving circuit used for current driving element and luminous device |
| CN104134426A (en) * | 2014-07-07 | 2014-11-05 | 京东方科技集团股份有限公司 | Pixel structure and driving method thereof, and display device |
| CN104134426B (en) * | 2014-07-07 | 2017-02-15 | 京东方科技集团股份有限公司 | Pixel structure and driving method thereof, and display device |
| US9972248B2 (en) | 2014-07-07 | 2018-05-15 | Boe Technology Group Co., Ltd. | Pixel structure and driving method thereof, and display apparatus |
| CN104112427A (en) * | 2014-07-21 | 2014-10-22 | 京东方科技集团股份有限公司 | Pixel circuit, driving method of pixel circuit and display device |
| US10068950B2 (en) | 2014-07-21 | 2018-09-04 | Boe Technology Group Co., Ltd. | Pixel circuit, driving method thereof, and display apparatus |
| CN108269532A (en) * | 2018-01-19 | 2018-07-10 | 友达光电股份有限公司 | Display device |
| CN108269532B (en) * | 2018-01-19 | 2021-01-01 | 友达光电股份有限公司 | Display device |
| CN114325142A (en) * | 2020-09-30 | 2022-04-12 | 瀚宇彩晶股份有限公司 | Method for testing touch display panel |
| CN114325142B (en) * | 2020-09-30 | 2024-03-29 | 瀚宇彩晶股份有限公司 | Method for testing touch display panel |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100365690C (en) | 2008-01-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101427296B (en) | Light emitting display device | |
| TWI228696B (en) | Pixel circuit for active matrix OLED and driving method | |
| CN101978415B (en) | Display panel with matrix form pixels | |
| TWI410929B (en) | Pixel circuit relating to organic light emitting diode and display using the same and driving method thereof | |
| TWI517122B (en) | Display panel, display apparatus, and electronic system | |
| CN100440291C (en) | Matrix display device with photosensitive element | |
| TW200426754A (en) | Display device | |
| CN1378193A (en) | Luminous display device using organic EL element | |
| CN104882099B (en) | A kind of pixel-driving circuit, array base palte and display device | |
| JP2006525539A (en) | Active matrix OLED display with threshold voltage drift compensation | |
| CN106782301A (en) | A kind of driving method of array base palte, display panel and display panel | |
| CN1892765A (en) | Display device and driving method | |
| CN110062944A (en) | Pixel circuit and its driving method, display device | |
| CN109300436A (en) | AMOLED pixel-driving circuit and driving method | |
| CN104715725A (en) | Pixel circuit, display device and drive method of display device | |
| CN107230455A (en) | A kind of pixel-driving circuit, image element driving method and display base plate | |
| CN109637451A (en) | A kind of driving method of display panel, display panel and display device | |
| CN101425256B (en) | Image display device | |
| CN100365690C (en) | Current driving device and method for active organic light-emitting diode | |
| CN114596816B (en) | Display panel, driving method thereof and display device | |
| CN108962145A (en) | Display device and its pixel circuit and driving method | |
| CN1567409A (en) | Driving device and method of active mode organic photogenic display | |
| CN101393720B (en) | Image display device | |
| CN1698086A (en) | Active matrix type display apparatus | |
| CN109285492A (en) | The method for sensing of the pixel characteristic value of OLED display panel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080130 Termination date: 20150630 |
|
| EXPY | Termination of patent right or utility model |