CN102222468A - Alternating-current pixel driving circuit and method for active organic light-emitting diode (OLED) display - Google Patents

Alternating-current pixel driving circuit and method for active organic light-emitting diode (OLED) display Download PDF

Info

Publication number
CN102222468A
CN102222468A CN2011101705773A CN201110170577A CN102222468A CN 102222468 A CN102222468 A CN 102222468A CN 2011101705773 A CN2011101705773 A CN 2011101705773A CN 201110170577 A CN201110170577 A CN 201110170577A CN 102222468 A CN102222468 A CN 102222468A
Authority
CN
China
Prior art keywords
transistor
control line
light emitting
oled
emitting diode
Prior art date
Application number
CN2011101705773A
Other languages
Chinese (zh)
Inventor
吴为敬
彭俊彪
周雷
张立荣
王磊
许伟
Original Assignee
华南理工大学
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 华南理工大学 filed Critical 华南理工大学
Priority to CN2011101705773A priority Critical patent/CN102222468A/en
Publication of CN102222468A publication Critical patent/CN102222468A/en

Links

Abstract

The invention discloses an alternating-current pixel driving circuit and method for an active organic light-emitting diode (OLED) display. The driving circuit comprises a driving transistor, a switch transistor, a storage capacitor and an OLED, wherein the drain of the first transistor is connected with a data wire; the grid of the first transistor is connected with a first scanning control wire; the source of the first transistor is connected with the end A of the storage capacitor; the drain of a second transistor is connected with the source of a third transistor; the grid of the second transistor is connected with the end A of the storage capacitor and the source of the first transistor; the source of the second transistor is connected with the drain of a four transistor and the end B of the storage capacitor, and is connected with the ground through the OLED; the drain of the third transistor is connected with a power wire; the grid of the third transistor is connected with a light-emitting control wire; the grid of the fourth transistor is connected with a second scanning control wire; and the source of the fourth transistor is connected with a reference potential. According to the driving circuit and method, the OLED works in an alternating-current driving mode, so that the characteristics of the OLED are recovered from degeneration state, the service life of the OLED is prolonged effectively, the threshold voltage drift of a thin film transistor and the degeneration of OLED cut-in voltage can be compensated effectively, and the uniformity of a display picture is enhanced.

Description

The active organic LED display exchanges pixel-driving circuit and driving method

Technical field

The present invention relates to the pixel drive technology of light emitting diode indicator, relate in particular to the active organic LED display and exchange pixel-driving circuit and driving method.

Background technology

Active matrix organic light emitting diode display (Active-Matrix Organic Light Emitting Diode:AMOLED) have volume little, simple in structure, from main light emission, brightness height, advantage such as visible angle is big, the response time is short, attracted to note widely.

At present, be applied to the thin film transistor (TFT) that AMOLED shows and mainly contain amorphous silicon film transistor (a-Si:H TFT) and polycrystalline SiTFT (Poly-Si TFT).Yet because the metastability of amorphous silicon material, serious drift takes place because of the effect of electric stress in the threshold voltage of a-Si:H TFTs in time.Because the stochastic distribution of grain boundary on the polycrystalline silicon material, the threshold voltage of Poly-Si TFTs skewness between pixel causes the viewing area GTG inhomogeneous.Become the problem that popular Zinc oxide-base TFT of research and organic tft also have similar threshold voltage shift gradually.Therefore, traditional electric capacity of two transistors (2T1C) image element circuit structure is not suitable for high-quality AMOLED demonstration.In addition, also need consider the performance degradation of OLED, the degeneration of OLED can cause the rising of self cut-in voltage, thereby causes the decline of brightness of display screen.The performance degradation of OLED can specifically be expressed as: one from electrology characteristic, and the electric current that the OLED two ends identical voltage source of loading is crossed OLED reduces; Two on optical characteristics, and OLED flows through the same galvanoluminescence brightness and descends.After the OLED device prepared, device architecture, organic material, electrode material and preparation technology determined that type of drive will produce material impact, the mission life of selecting good type of drive to help to prolong OLED to the reliably working of OLED.Many documents (as: 1.S.A.Van Slyke, C.H.Chen and C.W.Tang, Appl.Phys.Lett., 69 (15), Oct.1996:2160-2162 are arranged; 2.D.Zou, M.Yahiro and T.Tsutsui, Jpn.J.Appl.Phys., Vol.37 (1998): L1406-L1408; 3.D.Zou, M.Yahiro and T.Tsutsui, Appl.Phys.Lett., 72 (19), point out that May 1998:2484-2486.) pulse drive mode that comprises a reverse bias component can effectively improve the mission life of OLED, the AC driving mode of Here it is OLED.The reverse bias of OLED can reduce the electric charge accumulation of organic layer among the OLED, helps OLED to recover from degenerate, and can improve the I-E characteristic of OLED and improves energy utilization efficiency, but can not influence quantum efficiency.

At present, thus most AMOLED pixel circuit design or the AC driving that realizes OLED improves its mission life with the performance degradation that delays OLED, but fail to compensate TFT threshold voltage shift and OLED performance degradation; Realize compensation TFT threshold voltage shift and OLED performance degradation, but the AC driving of the OLED of being unrealized.The above analysis, a more satisfactory image element circuit topology is to comprise realization compensation TFT threshold voltage shift and OLED performance degradation on the AC driving mode basis of OLED.

Summary of the invention

The objective of the invention is to overcome the shortcoming and defect of above-mentioned prior art, provide active organic light emitting diode display to exchange pixel-driving circuit and driving method.The present invention exchanges pixel-driving circuit can promote Organic Light Emitting Diode recovery characteristics from degenerate, effectively improve the mission life of Organic Light Emitting Diode, and effectively compensate the degeneration of the threshold voltage shift and the light emitting diode cut-in voltage of driving transistors in the active organic LED display, thereby improve the homogeneity of light emitting diode indicator luminosity greatly.

Purpose of the present invention realizes by following proposal:

The active organic LED display exchanges pixel-driving circuit, and described driving circuit comprises: the first transistor, transistor seconds, the 3rd transistor, the 4th transistor, light emitting diode; These transistors are any one in polycrystalline SiTFT, amorphous silicon film transistor, Zinc oxide based film transistor or the OTFT.

The drain electrode of described the first transistor connects data line, and grid connects the first scan control line, and source electrode connects the A end of memory capacitance, and described the first transistor provides path for data voltage is written to the grid of transistor seconds and is stored in memory capacitance;

Described transistor seconds drain electrode connects the 3rd transistorized source electrode, grid connects the A end of memory capacitance, source electrode connects the B end of the 4th transistor drain and memory capacitance, and links to each other with ground by Organic Light Emitting Diode, and it is luminous that described transistor seconds drives Organic Light Emitting Diode;

Described the 3rd transistor drain connects power lead, grid sending and receiving photocontrol line, and described the 3rd transistor provides the charging path and the luminous path that provides of driving Organic Light Emitting Diode is provided for the storage of transistor seconds threshold voltage;

Described the 4th transistor gate connects the second scan control line, source electrode connects reference potential, described the 4th transistor provides the OLED discharge path makes B point potential drop to reference potential, impel the Organic Light Emitting Diode both end voltage reverse, and avoid Organic Light Emitting Diode luminous in the characteristic recovery stage.

Above-mentioned active organic LED display exchanges the driving method of pixel-driving circuit, comprises the following steps:

(1) characteristic is recovered the stage: the first scan control line, AC driving control line are in high level, the light emitting control line is in low level, data line is changed to the earth potential level, the first transistor and the 4th transistor turns, the 3rd transistor turn-offs, A point current potential is reset by the first transistor and is the earth potential level, and the discharge of anode charge stored equates with reference potential until its current potential; At this moment cathode potential is greater than anode potential, and the Organic Light Emitting Diode two ends are realized reverse bias and made Organic Light Emitting Diode be in the characteristic recovery stage thus, thereby realizes the AC driving of active organic LED pixel.In this stage, the 3rd transistor is in off state and causes transistor seconds can not flow through electric current, thereby can not influence the discharge of Organic Light Emitting Diode anode.

(2) threshold voltage memory phase: the first scan control line keeps original high level, the AC driving control line skips to low level, the light emitting control line skips to high level, data line and A point current potential are maintained the earth potential level, the first transistor and the 3rd transistor are in conducting state, the 4th transistor is in off state, power supply charges to Organic Light Emitting Diode anode B point by the 3rd transistor, transistor seconds and ends up to transistor seconds, at this moment, the memory capacitance both end voltage is the threshold voltage of transistor seconds.

(3) data voltage write phase: the first scan control line is a high level, AC driving control line and light emitting control line are low level, the first transistor is in conducting state, the 3rd transistor and the 4th transistor are in off state, and data voltage is written to the grid of transistor seconds and is retained to next frame by memory capacitance by the first transistor and upgrades.

(4) glow phase: the first scan control line, AC driving control line are low level, the light emitting control line is a high level, the first transistor and the 4th transistor are in off state, the 3rd transistor is in conducting state, it is luminous that transistor seconds drives Organic Light Emitting Diode, the gate source voltage of glow phase transistor seconds remains unchanged, thereby it is constant up to the next frame image refreshing to keep Organic Light Emitting Diode brightness in a frame time.

The present invention compared with prior art, advantage and effect are: the interchange pixel-driving circuit of the active organic LED display that the present invention proposes, when realizing the active organic LED AC driving, also effectively compensation transistor threshold voltage shift and Organic Light Emitting Diode cut-in voltage are degenerated, thereby improve the display frame brightness uniformity and the mission life thereof of active organic LED display.

Description of drawings

Fig. 1 is the interchange pixel-driving circuit figure of active organic LED display of the present invention;

Fig. 2 is the signal timing diagram of Fig. 1.

Wherein: the first transistor T1, transistor seconds T2, the 3rd transistor T 3, the 4th transistor T 4, memory capacitance Cs, the first scan control line Vscan1, AC driving control line Vscan2, light emitting control line Vems, reference potential line Vref, power lead Vdd, ground wire Vss, data line Vdata, Organic Light Emitting Diode OLED.

Embodiment

Below in conjunction with embodiment and accompanying drawing the present invention is described in further detail, but embodiments of the present invention are not limited thereto.

Embodiment:

As shown in Figure 1, the interchange pixel-driving circuit figure of active organic LED display of the present invention comprises the first transistor T1, transistor seconds T2, the 3rd transistor T 3, the 4th transistor T 4, memory capacitance Cs, the first scan control line Vscan1, AC driving control line Vscan2, light emitting control line Vems, power lead Vdd, ground wire Vss, reference potential line Vref, data line Vdata, Organic Light Emitting Diode OLED (following only represent with OLED).Above-mentioned these transistors can adopt any one in polycrystalline SiTFT, amorphous silicon film transistor, Zinc oxide based film transistor or the OTFT.

The drain electrode of described the first transistor T1 meets data line Vdata, and grid meets the first scan control line Vscan1, and source electrode connects the A end of memory capacitance Cs, and described the first transistor T1 provides path for data voltage is written to the grid of transistor seconds T2 and is stored in Cs;

Described transistor seconds T2 drain electrode connects the source electrode of the 3rd transistor T 3, and grid connects the A end of memory capacitance Cs, and source electrode connects the drain electrode of the 4th transistor T 4 and the B end of memory capacitance, and links to each other with ground by OLED, and described transistor seconds T2 driving OLED is luminous;

Described the 3rd transistor T 3 drain electrode meets power lead Vdd, and grid sending and receiving photocontrol line Vems, described the 3rd transistor T 3 provide the charging path for the storage of transistor seconds T2 threshold voltage and path is provided for driving OLED is luminous;

Described the 4th transistor T 4 grids meet AC driving control line Vscan2, and source electrode meets reference potential Vref, and described the 4th transistor T 4 provides the OLED discharge path to make B point potential drop to reference potential Vref, and avoid OLED luminous in the characteristic recovery stage.

During pixel-driving circuit work, the first transistor T1, the 3rd transistor T 3 and the 4th transistor T 4 all work in linear zone, and the transistor seconds T2 that plays driving action is operated in the saturation region.The input timing of each signal wire as shown in Figure 2.This pixel-driving circuit step is by the following method realized:

(1) recovers the stage in characteristic, the first scan control line Vscan1, AC driving control line Vscan2 are in high level, light emitting control line Vems is in low level, data line is changed to earth potential level Vss, the first transistor T1 and 4 conductings of the 4th transistor T, the 3rd transistor T 3 turn-offs, and A point current potential is reset by the first transistor T1 and is Vss, and the discharge of OLED anode charge stored equates with reference potential Vref until its current potential; At this moment the cathode potential Vss of OLED is greater than anode potential Vref, and the OLED two ends are realized reverse bias and made OLED be in the characteristic recovery stage thus, thereby realizes the AC driving of active OLED pixel.Notice that in this stage, the 3rd transistor T 3 is in off state and causes transistor seconds T2 can not flow through electric current, thereby can not influence the discharge of OLED anode.

(2) at the threshold voltage memory phase, the first scan control line Vscan1 keeps original high level, AC driving control line Vscan2 skips to low level, light emitting control line Vems skips to high level, data line and A point current potential are maintained earth potential level Vss, the first transistor T1 and the 3rd transistor T 3 are in conducting state, the 4th transistor T 4 is in off state, power supply Vdd is by the 3rd transistor T 3, transistor seconds T2 charges to OLED anode B point and ends up to transistor seconds T2, at this moment, B point potential value deducts the threshold voltage V of transistor seconds T2 for the earth potential level Th, i.e. V B=-V Th, then memory capacitance Cs both end voltage is the threshold voltage of transistor seconds T2.

(3) in the data voltage write phase, the first scan control line Vscan1 is a high level, AC driving control line Vscan2 and light emitting control line Vems are low level, the first transistor T1 is in conducting state, the 3rd transistor T 3 and the 4th transistor T 4 are in off state, and data voltage Vdata is written to the grid of transistor seconds T2 and is retained to next frame by memory capacitance Cs by the first transistor T1 and upgrades; At this moment be according to capacitance coupling effect B point current potential V B = - V th + C S C OLED + C S V data , C wherein OLEDBe OLED self electric capacity when not luminous.

(4) in glow phase, the first scan control line Vscan1, AC driving control line Vscan2 are low level, light emitting control line Vems is a high level, the first transistor T1 and the 4th transistor T 4 are in off state, the 3rd transistor T 3 is in conducting state, the transistor seconds driving OLED is luminous, and the gate source voltage of glow phase transistor seconds T2 remains unchanged, thereby it is constant up to the next frame image refreshing to keep OLED brightness in a frame time.

The storage of above-mentioned steps (2) transistor seconds threshold voltage is by charging ends up to transistor seconds T2 to OLED, memory capacitance Cs two ends storage voltage is the threshold voltage of transistor seconds T2, in the data voltage write phase, this pixel-driving circuit has utilized the big electric capacity of OLED self and has made the terminal potential variation of transistor seconds T2 source less, can reduce the number that adds electric capacity, save wiring space.

In pixel-driving circuit of the present invention, each pixel threshold voltage V ThHeterogeneity or drift can not have influence on the luminance difference of luminescent device OLED.The brightness of luminescent device OLED with flow through its size of current and be directly proportional.In the data voltage write phase, for each pixel, its memory capacitance Cs both end voltage (being the gate source voltage of transistor seconds T2) is fixed on V gs = V data - ( - V th + C S C OLED + C S V data ) = V th + C OLED C OLED + C S V data (V Data>0), and remain to next frame.For the different pixels point, the otherness of threshold voltage can cause the voltage difference at memory capacitance Cs two ends, but it is identical can deriving the electric current that flows through OLED by following formula:

I OLED = β ( V gs - V th ) 2

= β ( V th + C OLED C OLED + C S V data - V th ) 2

= β ( C OLED C OLED + C S V data ) 2

Wherein I OLEDFor glow phase flows through the electric current of transistor seconds T2, under the situation of other parameter constants, its size is only relevant with Vdata, and and V ThAnd the forward voltage of OLED is irrelevant.In the formula, μ nBe electron mobility; C OXThin film transistor (TFT) capacitive dielectric layer for unit area; L and W are respectively length of effective channel and the width of transistor seconds T2; V ThThreshold voltage for transistor seconds T2; V GsThe gate source voltage of transistor seconds T2.

It is pointed out that the storage of desiring successfully to realize threshold voltage, must satisfy-V at the threshold voltage memory phase Ref>V ThDesire to make image element circuit not luminous at non-glow phase OLED, the OLED both end voltage need be lower than its cut-in voltage, so only need to satisfy - V th + C S C OLED + C S V data < V OLED _ th , V OLED_thIt is the cut-in voltage of OLED.Like this, non-glow phase pixel can be realized complete black, thereby has improved the contrast of display greatly.No matter micromolecule light emitting diode or polymer LED, the unit-area capacitance of himself is about 25nF/cm 2, for a typical 200um*100um light-emitting area, its capacitance is about 5pF.And the Cs capacitance is generally less than 1pF.In the data voltage write phase, this pixel-driving circuit has utilized the big electric capacity of OLED self and has made B point potential change less, and therefore above-mentioned condition is easy to satisfy.

Certainly, those skilled in the art can also do suitably change to the pixel-driving circuit structure and the type of drive of the above-mentioned proposition of the present invention, for example suitably change the kind (P type or N type) of each switching transistor of image element circuit, with electrical connection exchange of each transistorized source electrode and drain electrode etc.

Just can realize the present invention preferably as mentioned above.

The foregoing description only is preferred implementation of the present invention; but embodiments of the present invention are not restricted to the described embodiments; other are any not to deviate from change, the modification done under spirit of the present invention and the principle, substitute, combination, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.

Claims (3)

1. the interchange pixel-driving circuit of active organic LED display, this driving circuit comprises:
The first transistor, transistor seconds, the 3rd transistor, the 4th transistor, memory capacitance, the first scan control line, AC driving control line, light emitting control line, power lead, ground wire, reference potential line, data line, Organic Light Emitting Diode;
The drain electrode of described the first transistor connects data line, and grid connects the first scan control line, and source electrode connects the A end of memory capacitance, and described the first transistor provides path for data voltage is written to the grid of transistor seconds and is stored in memory capacitance;
Described transistor seconds drain electrode connects the 3rd transistorized source electrode, grid connects the A end of memory capacitance, source electrode connects the B end of the 4th transistor drain and memory capacitance, and links to each other with ground by Organic Light Emitting Diode, and it is luminous that described transistor seconds drives Organic Light Emitting Diode;
Described the 3rd transistor drain connects power lead, grid sending and receiving photocontrol line, and described the 3rd transistor provides the charging path and the luminous path that provides of driving Organic Light Emitting Diode is provided for the storage of transistor seconds threshold voltage;
Described the 4th transistor gate connects the AC driving control line, and source electrode connects reference potential, and described the 4th transistor provides discharge path to make B point potential drop to reference potential, and avoids luminous in the characteristic recovery stage.
2. the interchange pixel-driving circuit of active organic LED display according to claim 1, it is characterized in that, described the first transistor, transistor seconds, the 3rd transistor, the 4th transistor are any one transistor in polycrystalline SiTFT, amorphous silicon film transistor, Zinc oxide based film transistor or the OTFT.
3. according to the driving method of the interchange pixel-driving circuit of the described active organic LED display of claim 1 to 2, it is characterized in that, comprise the following steps:
(1) characteristic is recovered the stage: the first scan control line, AC driving control line are in high level, the light emitting control line is in low level, data line is changed to the earth potential level, the first transistor and the 4th transistor turns, the 3rd transistor turn-offs, A point current potential is reset by the first transistor and is earth potential, and the discharge of Organic Light Emitting Diode anode charge stored equates with reference potential until its current potential; At this moment the cathode potential of Organic Light Emitting Diode is greater than anode potential, and the Organic Light Emitting Diode two ends are realized reverse bias and made Organic Light Emitting Diode be in the characteristic recovery stage thus, realize the AC driving of active organic LED pixel; In this stage, the 3rd transistor is in off state and causes transistor seconds can not flow through electric current, can not influence the discharge of OLED anode;
(2) threshold voltage memory phase: the first scan control line keeps original high level, the AC driving control line skips to low level, the light emitting control line skips to high level, data line and A point current potential are maintained the earth potential level, the first transistor and the 3rd transistor are in conducting state, the 4th transistor is in off state, power supply charges and ends up to transistor seconds by the 3rd transistor, transistor seconds antianode B point, at this moment, the memory capacitance both end voltage is the threshold voltage of transistor seconds;
(3) data voltage write phase: the first scan control line is a high level, AC driving control line and light emitting control line are low level, the first transistor is in conducting state, the 3rd transistor and the 4th transistor are in off state, and data voltage is written to the grid of transistor seconds and is retained to next frame by memory capacitance by the first transistor and upgrades;
(4) glow phase: the first scan control line, AC driving control line are low level, the light emitting control line is a high level, the first transistor and the 4th transistor are in off state, the 3rd transistor is in conducting state, it is luminous that transistor seconds drives Organic Light Emitting Diode, the gate source voltage of glow phase transistor seconds remains unchanged, thereby it is constant up to the next frame image refreshing to keep Organic Light Emitting Diode brightness in a frame time.
CN2011101705773A 2011-06-23 2011-06-23 Alternating-current pixel driving circuit and method for active organic light-emitting diode (OLED) display CN102222468A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011101705773A CN102222468A (en) 2011-06-23 2011-06-23 Alternating-current pixel driving circuit and method for active organic light-emitting diode (OLED) display

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011101705773A CN102222468A (en) 2011-06-23 2011-06-23 Alternating-current pixel driving circuit and method for active organic light-emitting diode (OLED) display

Publications (1)

Publication Number Publication Date
CN102222468A true CN102222468A (en) 2011-10-19

Family

ID=44779008

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2011101705773A CN102222468A (en) 2011-06-23 2011-06-23 Alternating-current pixel driving circuit and method for active organic light-emitting diode (OLED) display

Country Status (1)

Country Link
CN (1) CN102222468A (en)

Cited By (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103021336A (en) * 2012-12-17 2013-04-03 华南理工大学 Alternating current pixel driving circuit and driving method of active organic electroluminescence displayer
CN103903565A (en) * 2014-01-13 2014-07-02 友达光电股份有限公司 Display panel pixel
CN103903564A (en) * 2014-03-19 2014-07-02 京东方科技集团股份有限公司 Pixel circuit, driving method of pixel circuit, organic light-emitting display panel and display device
CN103996379A (en) * 2014-06-16 2014-08-20 深圳市华星光电技术有限公司 Pixel driving circuit and method for organic light emitting diode
WO2014201755A1 (en) * 2013-06-21 2014-12-24 京东方科技集团股份有限公司 Pixel circuit and drive method therefor, organic light-emitting display panel and display device
WO2015010385A1 (en) * 2013-07-25 2015-01-29 京东方科技集团股份有限公司 Oled alternating-current drive circuit, drive method and display device
WO2015018161A1 (en) * 2013-08-07 2015-02-12 京东方科技集团股份有限公司 Oled alternating-current driving circuit, driving method and display device
CN105047138A (en) * 2015-09-15 2015-11-11 深圳市华星光电技术有限公司 Driving system of display device and driving circuit suitable for OLED
CN105528992A (en) * 2016-01-29 2016-04-27 深圳市华星光电技术有限公司 Pixel compensating circuit, method, scanning drive circuit and plane display device
CN105788511A (en) * 2014-12-22 2016-07-20 昆山国显光电有限公司 Pixel driving circuit and display device
CN105895020A (en) * 2016-06-02 2016-08-24 深圳市华星光电技术有限公司 OLED (organic light emitting diode) display unit driving system and OLED display unit driving method
CN106128381A (en) * 2016-06-04 2016-11-16 友达光电股份有限公司 Image element circuit and the operational approach of image element circuit
CN106782325A (en) * 2017-03-02 2017-05-31 深圳市华星光电技术有限公司 Pixel compensation circuit and driving method, display device
CN106935192A (en) * 2017-05-12 2017-07-07 京东方科技集团股份有限公司 Image element circuit and its driving method, display device
CN106940979A (en) * 2017-05-23 2017-07-11 京东方科技集团股份有限公司 Pixel compensation circuit and its driving method, display device
WO2017117940A1 (en) * 2016-01-04 2017-07-13 京东方科技集团股份有限公司 Pixel drive circuit, pixel drive method, display panel and display device
CN106991969A (en) * 2017-06-09 2017-07-28 京东方科技集团股份有限公司 Display panel, the compensation circuit of pixel and compensation method
CN107170413A (en) * 2017-07-26 2017-09-15 江苏集萃有机光电技术研究所有限公司 The driving method of image element circuit and image element circuit
CN104867442B (en) * 2014-02-20 2017-10-31 北京大学深圳研究生院 A kind of image element circuit and display device
US9818344B2 (en) 2015-12-04 2017-11-14 Apple Inc. Display with light-emitting diodes
CN107437401A (en) * 2016-05-26 2017-12-05 鸿富锦精密工业(深圳)有限公司 Pixel-driving circuit and the display device with pixel-driving circuit
CN107452342A (en) * 2012-12-11 2017-12-08 伊格尼斯创新公司 Display system, control system, the analysis method of display panel and test system
CN107591126A (en) * 2017-10-26 2018-01-16 京东方科技集团股份有限公司 Control method and its control circuit, the display device of a kind of image element circuit
CN108604434A (en) * 2016-12-14 2018-09-28 华为技术有限公司 The power consumption control method and equipment of AMOLED screen
WO2018209930A1 (en) * 2017-05-16 2018-11-22 Boe Technology Group Co., Ltd. A pixel circuit, a method for driving the pixel circuit, and a display apparatus
CN108877680A (en) * 2018-08-30 2018-11-23 京东方科技集团股份有限公司 A kind of pixel circuit and its driving method, display panel and display device
CN109036283A (en) * 2018-09-06 2018-12-18 京东方科技集团股份有限公司 The driving circuit and driving method of organic light-emitting field effect transistor, display device
WO2019033512A1 (en) * 2017-08-18 2019-02-21 深圳市华星光电半导体显示技术有限公司 Pixel driving circuit for oled display device and oled display device
WO2019037285A1 (en) * 2017-08-24 2019-02-28 深圳市华星光电半导体显示技术有限公司 Top-emission amoled pixel circuit and drive method therefor
EP3327710A4 (en) * 2015-07-21 2019-03-06 Shenzhen Royole Technologies Co., Ltd. Pixel circuit and drive method therefor, and display panel
CN109671398A (en) * 2019-02-28 2019-04-23 厦门天马微电子有限公司 Driving method, display panel and the display device of pixel-driving circuit
CN109686318A (en) * 2019-02-27 2019-04-26 深圳吉迪思电子科技有限公司 Pixel-driving circuit and driving method
CN109697960A (en) * 2019-02-27 2019-04-30 深圳吉迪思电子科技有限公司 Pixel-driving circuit and driving method, display panel
US10707237B2 (en) 2013-08-26 2020-07-07 Apple Inc. Displays with silicon and semiconducting oxide thin-film transistors
CN109697960B (en) * 2019-02-27 2020-11-03 深圳吉迪思电子科技有限公司 Pixel driving circuit, driving method and display panel

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1417767A (en) * 2001-11-09 2003-05-14 三洋电机株式会社 Display with function of initializing brightness data of optical elements
CN101520986A (en) * 2008-02-28 2009-09-02 索尼株式会社 El display panel, electronic apparatus and el display panel driving method
CN101556763A (en) * 2008-04-09 2009-10-14 索尼株式会社 Image display device and driving method of image display device
CN101986378A (en) * 2010-11-09 2011-03-16 华南理工大学 Pixel driving circuit for active organic light-emitting diode (OLED) display and driving method thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1417767A (en) * 2001-11-09 2003-05-14 三洋电机株式会社 Display with function of initializing brightness data of optical elements
CN101520986A (en) * 2008-02-28 2009-09-02 索尼株式会社 El display panel, electronic apparatus and el display panel driving method
CN101556763A (en) * 2008-04-09 2009-10-14 索尼株式会社 Image display device and driving method of image display device
CN101986378A (en) * 2010-11-09 2011-03-16 华南理工大学 Pixel driving circuit for active organic light-emitting diode (OLED) display and driving method thereof

Cited By (63)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107452342A (en) * 2012-12-11 2017-12-08 伊格尼斯创新公司 Display system, control system, the analysis method of display panel and test system
CN107452342B (en) * 2012-12-11 2020-08-11 伊格尼斯创新公司 Display system, control system, analysis method of display panel and test system
CN103021336A (en) * 2012-12-17 2013-04-03 华南理工大学 Alternating current pixel driving circuit and driving method of active organic electroluminescence displayer
WO2014201755A1 (en) * 2013-06-21 2014-12-24 京东方科技集团股份有限公司 Pixel circuit and drive method therefor, organic light-emitting display panel and display device
WO2015010385A1 (en) * 2013-07-25 2015-01-29 京东方科技集团股份有限公司 Oled alternating-current drive circuit, drive method and display device
US9589504B2 (en) 2013-07-25 2017-03-07 Boe Technology Group Co., Ltd. OLED AC driving circuit, driving method and display device
US9286831B2 (en) 2013-08-07 2016-03-15 Boe Technology Group Co., Ltd. AC drive circuit for OLED, drive method and display apparatus
WO2015018161A1 (en) * 2013-08-07 2015-02-12 京东方科技集团股份有限公司 Oled alternating-current driving circuit, driving method and display device
US10707237B2 (en) 2013-08-26 2020-07-07 Apple Inc. Displays with silicon and semiconducting oxide thin-film transistors
US10741588B2 (en) 2013-08-26 2020-08-11 Apple Inc. Displays with silicon and semiconducting oxide thin-film transistors
CN103903565A (en) * 2014-01-13 2014-07-02 友达光电股份有限公司 Display panel pixel
CN103903565B (en) * 2014-01-13 2016-03-02 友达光电股份有限公司 The pixel of display panel
CN104867442B (en) * 2014-02-20 2017-10-31 北京大学深圳研究生院 A kind of image element circuit and display device
CN103903564A (en) * 2014-03-19 2014-07-02 京东方科技集团股份有限公司 Pixel circuit, driving method of pixel circuit, organic light-emitting display panel and display device
CN103996379B (en) * 2014-06-16 2016-05-04 深圳市华星光电技术有限公司 The pixel-driving circuit of Organic Light Emitting Diode and image element driving method
CN103996379A (en) * 2014-06-16 2014-08-20 深圳市华星光电技术有限公司 Pixel driving circuit and method for organic light emitting diode
CN105788511A (en) * 2014-12-22 2016-07-20 昆山国显光电有限公司 Pixel driving circuit and display device
EP3327710A4 (en) * 2015-07-21 2019-03-06 Shenzhen Royole Technologies Co., Ltd. Pixel circuit and drive method therefor, and display panel
US10424246B2 (en) 2015-07-21 2019-09-24 Shenzhen Royole Technologies Co., Ltd. Pixel circuit and method for driving pixel circuit
CN105047138A (en) * 2015-09-15 2015-11-11 深圳市华星光电技术有限公司 Driving system of display device and driving circuit suitable for OLED
US10354585B2 (en) 2015-12-04 2019-07-16 Apple Inc. Display with light-emitting diodes
US10714009B2 (en) 2015-12-04 2020-07-14 Apple Inc. Display with light-emitting diodes
US10504432B2 (en) 2015-12-04 2019-12-10 Apple Inc. Display with light-emitting diodes
US9818344B2 (en) 2015-12-04 2017-11-14 Apple Inc. Display with light-emitting diodes
WO2017117940A1 (en) * 2016-01-04 2017-07-13 京东方科技集团股份有限公司 Pixel drive circuit, pixel drive method, display panel and display device
US10403201B2 (en) 2016-01-04 2019-09-03 Boe Technology Group Co., Ltd. Pixel driving circuit, pixel driving method, display panel and display device
US10019943B2 (en) 2016-01-29 2018-07-10 Shenzhen China Star Optoelectronics Technology Co., Ltd Pixel compensation circuits, scanning driving circuits and flat display devices
CN105528992A (en) * 2016-01-29 2016-04-27 深圳市华星光电技术有限公司 Pixel compensating circuit, method, scanning drive circuit and plane display device
CN107437401A (en) * 2016-05-26 2017-12-05 鸿富锦精密工业(深圳)有限公司 Pixel-driving circuit and the display device with pixel-driving circuit
CN105895020B (en) * 2016-06-02 2019-07-02 深圳市华星光电技术有限公司 OLED display drive system and OLED display driving method
US10217412B2 (en) 2016-06-02 2019-02-26 Shenzhen China Star Optoelectronics Technology Co., Ltd. OLED display device drive system and OLED display drive method
CN105895020A (en) * 2016-06-02 2016-08-24 深圳市华星光电技术有限公司 OLED (organic light emitting diode) display unit driving system and OLED display unit driving method
CN106128381B (en) * 2016-06-04 2019-06-25 友达光电股份有限公司 The operating method of pixel circuit and pixel circuit
CN106128381A (en) * 2016-06-04 2016-11-16 友达光电股份有限公司 Image element circuit and the operational approach of image element circuit
CN108604434B (en) * 2016-12-14 2020-05-08 华为技术有限公司 Power consumption control method and equipment for AMOLED screen
CN108604434A (en) * 2016-12-14 2018-09-28 华为技术有限公司 The power consumption control method and equipment of AMOLED screen
US10347184B2 (en) 2017-03-02 2019-07-09 Shenzhen China Star Optoelectronics Technology Co., Ltd Pixel compensation circuit, driving method and display device
CN106782325A (en) * 2017-03-02 2017-05-31 深圳市华星光电技术有限公司 Pixel compensation circuit and driving method, display device
US10546531B2 (en) 2017-05-12 2020-01-28 Boe Technology Group Co., Ltd. Pixel circuit driving method and display device
CN106935192B (en) * 2017-05-12 2019-04-02 京东方科技集团股份有限公司 Pixel circuit and its driving method, display device
CN106935192A (en) * 2017-05-12 2017-07-07 京东方科技集团股份有限公司 Image element circuit and its driving method, display device
US20180357963A1 (en) * 2017-05-16 2018-12-13 Boe Technology Group Co., Ltd. A pixel circuit, a method for driving the pixel circuit, and a display apparatus
WO2018209930A1 (en) * 2017-05-16 2018-11-22 Boe Technology Group Co., Ltd. A pixel circuit, a method for driving the pixel circuit, and a display apparatus
CN108877669A (en) * 2017-05-16 2018-11-23 京东方科技集团股份有限公司 A kind of pixel circuit, driving method and display device
CN106940979B (en) * 2017-05-23 2019-01-25 京东方科技集团股份有限公司 Pixel compensation circuit and its driving method, display device
CN106940979A (en) * 2017-05-23 2017-07-11 京东方科技集团股份有限公司 Pixel compensation circuit and its driving method, display device
WO2018214428A1 (en) * 2017-05-23 2018-11-29 京东方科技集团股份有限公司 Pixel compensation circuit and driving method thereof, and display device
US10762844B2 (en) 2017-06-09 2020-09-01 Boe Technology Group., Ltd. Pixel driving circuit and method for driving the same, display panel and compensation
WO2018223702A1 (en) * 2017-06-09 2018-12-13 京东方科技集团股份有限公司 Display panel, pixel compensation circuit and compensation method
CN106991969A (en) * 2017-06-09 2017-07-28 京东方科技集团股份有限公司 Display panel, the compensation circuit of pixel and compensation method
CN107170413B (en) * 2017-07-26 2019-01-18 江苏集萃有机光电技术研究所有限公司 The driving method of pixel circuit and pixel circuit
CN107170413A (en) * 2017-07-26 2017-09-15 江苏集萃有机光电技术研究所有限公司 The driving method of image element circuit and image element circuit
US10593260B1 (en) 2017-08-18 2020-03-17 Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd Pixel driving circuit for OLED display device and OLED display device
WO2019033512A1 (en) * 2017-08-18 2019-02-21 深圳市华星光电半导体显示技术有限公司 Pixel driving circuit for oled display device and oled display device
WO2019037285A1 (en) * 2017-08-24 2019-02-28 深圳市华星光电半导体显示技术有限公司 Top-emission amoled pixel circuit and drive method therefor
CN107591126A (en) * 2017-10-26 2018-01-16 京东方科技集团股份有限公司 Control method and its control circuit, the display device of a kind of image element circuit
US10643531B2 (en) 2017-10-26 2020-05-05 Boe Technology Group Co., Ltd. Control method for pixel circuit, control circuit for pixel circuit and display device
CN108877680A (en) * 2018-08-30 2018-11-23 京东方科技集团股份有限公司 A kind of pixel circuit and its driving method, display panel and display device
CN109036283A (en) * 2018-09-06 2018-12-18 京东方科技集团股份有限公司 The driving circuit and driving method of organic light-emitting field effect transistor, display device
CN109697960B (en) * 2019-02-27 2020-11-03 深圳吉迪思电子科技有限公司 Pixel driving circuit, driving method and display panel
CN109697960A (en) * 2019-02-27 2019-04-30 深圳吉迪思电子科技有限公司 Pixel-driving circuit and driving method, display panel
CN109686318A (en) * 2019-02-27 2019-04-26 深圳吉迪思电子科技有限公司 Pixel-driving circuit and driving method
CN109671398A (en) * 2019-02-28 2019-04-23 厦门天马微电子有限公司 Driving method, display panel and the display device of pixel-driving circuit

Similar Documents

Publication Publication Date Title
US9214506B2 (en) Pixel unit driving circuit, method for driving pixel unit driving circuit and display device
US9984626B2 (en) Pixel circuit for organic light emitting diode, a display device having pixel circuit and driving method of pixel circuit
CN103137067B (en) Organic LED display device and driving method thereof
US10297195B2 (en) Pixel circuit and driving method thereof, array substrate, display panel and display device
CN102930824B (en) Pixel circuit and driving method and display device
US9881544B2 (en) Pixel circuit for AC driving, driving method and display apparatus
US9084331B2 (en) Active matrix organic light emitting diode circuit and operating method of the same
CN103310732B (en) Pixel circuit, driving method thereof and display device
JP5063433B2 (en) Display device
US8941309B2 (en) Voltage-driven pixel circuit, driving method thereof and display panel
CN1892766B (en) Semiconductor device, display device, and electronic appliance
TWI389074B (en) Method and system for programming and driving active matrix light emitting device pixel
US6937215B2 (en) Pixel driving circuit of an organic light emitting diode display panel
CN101563720B (en) Light-emitting display device
CN101501748B (en) Stable driving scheme for active matrix displays
KR100454521B1 (en) Selfluminous display device
JP5236156B2 (en) Organic light emitting diode display
CN104036726B (en) Image element circuit and driving method, OLED display panel and device
US7355572B2 (en) Pixel circuit, display device, and method of driving pixel circuit
US7773054B2 (en) Organic light emitting diode display
CN101667391B (en) Pixel circuit, light emitting display device and driving method thereof
CN101313348B (en) Semiconductor device, display device, and electronic device
JP4062179B2 (en) Pixel circuit, display device, and driving method of pixel circuit
US20140028217A1 (en) Pixel Driver Circuit And Pixel Circuit Having The Pixel Driver Circuit
KR101066414B1 (en) Driving element and driving method of organic light emitting device, and display panel and display device having the same

Legal Events

Date Code Title Description
PB01 Publication
C06 Publication
SE01 Entry into force of request for substantive examination
C10 Entry into substantive examination
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20111019

C02 Deemed withdrawal of patent application after publication (patent law 2001)