WO2015014056A1 - 有机发光二极管像素电路及其驱动方法、显示装置 - Google Patents

有机发光二极管像素电路及其驱动方法、显示装置 Download PDF

Info

Publication number
WO2015014056A1
WO2015014056A1 PCT/CN2013/088329 CN2013088329W WO2015014056A1 WO 2015014056 A1 WO2015014056 A1 WO 2015014056A1 CN 2013088329 W CN2013088329 W CN 2013088329W WO 2015014056 A1 WO2015014056 A1 WO 2015014056A1
Authority
WO
WIPO (PCT)
Prior art keywords
thin film
film transistor
turned
touch
light emitting
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.)
Ceased
Application number
PCT/CN2013/088329
Other languages
English (en)
French (fr)
Inventor
周全国
祁小敬
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BOE Technology Group Co Ltd
Chengdu BOE Optoelectronics Technology Co Ltd
Original Assignee
BOE Technology Group Co Ltd
Chengdu BOE Optoelectronics Technology Co Ltd
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 BOE Technology Group Co Ltd, Chengdu BOE Optoelectronics Technology Co Ltd filed Critical BOE Technology Group Co Ltd
Priority to US14/361,716 priority Critical patent/US9330604B2/en
Publication of WO2015014056A1 publication Critical patent/WO2015014056A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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]
    • G09G3/3225—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] using an active matrix
    • G09G3/3233—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] using an active matrix with pixel circuitry controlling the current through the light-emitting element
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0412—Digitisers structurally integrated in a display
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0416—Control or interface arrangements specially adapted for digitisers
    • G06F3/04166—Details of scanning methods, e.g. sampling time, grouping of sub areas or time sharing with display driving
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/042—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/08—Active matrix structure, i.e. with use of active elements, inclusive of non-linear two terminal elements, in the pixels together with light emitting or modulating elements
    • G09G2300/0809—Several active elements per pixel in active matrix panels
    • G09G2300/0819—Several active elements per pixel in active matrix panels used for counteracting undesired variations, e.g. feedback or autozeroing
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/08—Active matrix structure, i.e. with use of active elements, inclusive of non-linear two terminal elements, in the pixels together with light emitting or modulating elements
    • G09G2300/0809—Several active elements per pixel in active matrix panels
    • G09G2300/0842—Several active elements per pixel in active matrix panels forming a memory circuit, e.g. a dynamic memory with one capacitor
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/08—Active matrix structure, i.e. with use of active elements, inclusive of non-linear two terminal elements, in the pixels together with light emitting or modulating elements
    • G09G2300/0809—Several active elements per pixel in active matrix panels
    • G09G2300/0842—Several active elements per pixel in active matrix panels forming a memory circuit, e.g. a dynamic memory with one capacitor
    • G09G2300/0861—Several active elements per pixel in active matrix panels forming a memory circuit, e.g. a dynamic memory with one capacitor with additional control of the display period without amending the charge stored in a pixel memory, e.g. by means of additional select electrodes
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0233—Improving the luminance or brightness uniformity across the screen
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/029—Improving the quality of display appearance by monitoring one or more pixels in the display panel, e.g. by monitoring a fixed reference pixel
    • G09G2320/0295—Improving the quality of display appearance by monitoring one or more pixels in the display panel, e.g. by monitoring a fixed reference pixel by monitoring each display pixel
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2360/00—Aspects of the architecture of display systems
    • G09G2360/14—Detecting light within display terminals, e.g. using a single or a plurality of photosensors
    • G09G2360/145—Detecting light within display terminals, e.g. using a single or a plurality of photosensors the light originating from the display screen
    • G09G2360/147—Detecting light within display terminals, e.g. using a single or a plurality of photosensors the light originating from the display screen the originated light output being determined for each pixel
    • G09G2360/148—Detecting light within display terminals, e.g. using a single or a plurality of photosensors the light originating from the display screen the originated light output being determined for each pixel the light being detected by light detection means within each pixel

Definitions

  • the present invention relates to the field of touch display technologies, and in particular, to an organic light emitting diode pixel circuit, a driving method thereof, and a display device. Background technique
  • the touch screen panel is the simplest, most convenient and natural human-computer interaction device. It has been widely used in various electronic products, such as mobile phones, notebook computers, digital cameras, etc.
  • the touch screen can be divided into two types according to the installation method: an external (intern) touch screen and an in-cell touch screen.
  • the external touch screen is provided with a touch device on the display panel.
  • the touch device generally includes a touch panel and a protective layer (such as diamond glass).
  • the touch panel is disposed on the display panel, and the touch screen works by sensing the change of light or pressure by the touch panel.
  • the built-in touch screen technology embeds the function of the touch panel sensing signal into the pixel circuit, and by loading the control circuit, the display screen has the ability to sense the touch signal.
  • the inventors have found that at least the following problems exist in the prior art:
  • the function of sensing the signal of the touch panel is embedded in the pixel circuit, the control circuit is complicated, and the manufacturing process is complicated, which is not conducive to product yield and production efficiency. Improvement.
  • the aperture ratio of the pixels is lowered, which in turn causes the display display quality to deteriorate.
  • the technical problem to be solved by the present invention includes that the control circuit and the manufacturing process of the built-in type touch screen in the prior art are complicated, thereby being disadvantageous for improving the product yield and the production efficiency, and providing a control circuit and a manufacturing process which are relatively simple.
  • Organic light emitting diode pixel circuit, driving method thereof, and display device are complicated, thereby being disadvantageous for improving the product yield and the production efficiency, and providing a control circuit and a manufacturing process which are relatively simple.
  • a data writing unit a storage unit, a driving unit, an organic light emitting diode, a lighting control unit, and a touch detecting unit;
  • the data writing unit is configured to write a power voltage signal to the storage unit under the control of the light emission control line and the scan signal line during the touch detection phase and the organic light emitting diode illumination phase, and under the control of the scan signal line Writing a data signal line voltage signal to the storage unit;
  • the storage unit is configured to supply a voltage to the driving unit
  • the touch detection unit is configured to sense a touch under the control of a touch signal level control line during a touch detection phase, and generate a detection signal;
  • the driving unit is configured to convert the detection signal into a touch output signal under the control of a touch signal level control line during a touch detection phase, and the touch output signal is output by the touch detection unit, and simultaneously
  • the driving unit is further configured to provide a driving current to the organic light emitting diode during an illuminating stage of the organic light emitting diode;
  • the illumination control unit is configured to conduct the driving unit and the organic light emitting diode under the control of the touch signal level control line during the illumination phase of the organic light emitting diode.
  • the storage unit comprises a storage capacitor.
  • the driving unit comprises a fourth thin film transistor, and a gate of the fourth thin film transistor is connected to the first end of the storage capacitor.
  • the data writing unit comprises a first thin film transistor, a second thin film transistor, a third thin film transistor, a fifth thin film transistor, a sixth thin film transistor, and a seventh thin film transistor; wherein:
  • a gate of the first thin film transistor is connected to an emission control line, and a drain of the first thin film transistor is grounded;
  • a gate of the second thin film transistor is connected to a scan signal line, and a drain of the second thin film transistor is grounded;
  • a gate of the third thin film transistor is connected to a scan signal line, and a drain of the third thin film transistor is connected to a source of the first thin film transistor;
  • a gate of the fifth thin film transistor is connected to a scan signal line, a source of the fifth thin film transistor is connected to a power signal line, and a drain of the fifth thin film transistor Connected to the second end of the storage capacitor and the source of the second thin film transistor; the gate of the sixth thin film transistor is connected to the scan signal line, and the source of the sixth thin film transistor is connected to the data signal line The drain of the sixth thin film transistor is connected to the source of the fourth thin film transistor;
  • a gate of the seventh thin film transistor is connected to a scan signal line, a source of the seventh thin film transistor is connected to a power signal line, and a drain of the seventh thin film transistor is connected to a source of the fourth thin film transistor.
  • the cathode of the organic light emitting diode is grounded.
  • the light emission control unit includes an eighth thin film transistor, a source of the eighth thin film transistor is connected to a drain of the fourth thin film transistor, and a gate and a touch signal level of the eighth thin film transistor
  • the control line is connected, and a drain of the eighth thin film transistor is connected to a source of the first thin film transistor and an anode of the organic light emitting diode.
  • the touch detection unit comprises a photodiode, a ninth thin film transistor and a tenth thin film transistor, wherein:
  • a cathode of the photodiode is connected to a first end of the storage capacitor; a source of the ninth thin film transistor is connected to a power signal line, and a drain of the ninth thin film transistor is connected to an anode of the photodiode, a gate of the ninth thin film transistor is connected to a touch signal level control line;
  • a source of the tenth thin film transistor is connected to a drain of the fourth thin film transistor, a gate of the tenth thin film transistor is connected to a touch signal level control line, and a drain and a sensor of the tenth thin film transistor Wire connection.
  • the first thin film transistor, the second thin film transistor, the seventh thin film transistor, the ninth thin film transistor, and the tenth thin film transistor are N-type thin film transistors, and the third thin film transistor, the fourth thin film transistor, and the third thin film transistor
  • the fifth thin film transistor, the sixth thin film transistor, and the eighth thin film transistor are P-type thin film transistors, or the first thin film transistor, the second thin film transistor, the seventh thin film transistor, the ninth thin film transistor, the fourth thin film transistor, and the tenth thin film
  • the transistor is a P-type thin film transistor, and the third thin film transistor, the fifth thin film transistor, the sixth thin film transistor, and the eighth thin film transistor are N-type thin film transistors.
  • the first to ninth thin film transistors are any one of a polysilicon thin film transistor, a single crystal silicon thin film transistor, an oxide thin film transistor, and an organic thin film transistor.
  • the organic light emitting diode is an upper light emitting type organic light emitting diode.
  • the OLED pixel circuit of the present invention comprises a photodiode, which enables the display screen to have the ability to directly sense the signal generated by the touch, thereby making the control circuit of the pixel simpler, simplifying the manufacturing steps, thereby improving production efficiency and products. Yield, the most important is to help reduce production costs.
  • the OLED pixel circuit of the present invention can compensate for the non-uniformity of the threshold voltage of the thin film transistor, thereby improving the picture uniformity of the organic light emitting display.
  • two layers of indium tin oxide film are reduced in the production process, thereby effectively increasing the light transmittance and improving the display quality of the display.
  • the present invention also provides a display device comprising the above-described organic light emitting diode pixel circuit.
  • the display device of the present invention includes the above-described organic light emitting diode pixel circuit, the overall thickness of the display device is thinner, the weight is lighter, and the production cost is further lowered.
  • the sensitivity of the display screen to the touch can be remarkably improved, and since the photodiode operates by sensing the change of the light, the floating touch can be realized on the display screen.
  • the present invention also provides a driving method for the OLED pixel circuit, which includes a touch signal detecting phase and a driving OLED light emitting phase, wherein: the touch signal detecting phase includes:
  • the scan signal line controls the second thin film transistor and the seventh thin film transistor to be turned off, and the third thin film transistor, the fifth thin film transistor, and the sixth thin film transistor are turned on, and the light emission control line controls the first thin film transistor to be turned on,
  • the touch signal level control line controls the eighth thin film transistor to be turned on and the touch signal detecting module to be turned off, and the fourth thin film transistor enters a saturated state;
  • the scan signal line controls the second thin film transistor and the seventh thin film transistor to be turned off, and the third thin film transistor, the fifth thin film transistor, and the sixth thin film transistor are turned on, the light emission control line controls the first thin film transistor to be turned off, Touch signal level
  • the control line controls the eighth thin film transistor to be turned on and the touch signal detecting module to be turned off;
  • the scan signal line controls the second thin film transistor and the seventh thin film transistor to be turned on, and the third thin film transistor, the fifth thin film transistor, and the sixth thin film The transistor is turned off, the light emission control line controls the first thin film transistor to be turned on, the touch signal level control line controls the eighth thin film transistor to be turned on and the touch signal detecting module is turned off;
  • the scan signal line controls the first The second thin film transistor and the seventh thin film transistor are turned on and the third thin film transistor, the fifth thin film transistor, and the sixth thin film transistor are turned off, the light emission control line controls the first thin film transistor to be turned on, the touch signal level control line Controlling the eighth thin film
  • the scan signal line controls the second thin film transistor and the seventh thin film transistor to be turned off, and the third thin film transistor, the fifth thin film transistor, and the sixth thin film transistor are turned on, and the light emission control line controls the first thin film transistor to be turned on, Said fourth thin film transistor enters a saturated state;
  • the scan signal line controls the second thin film transistor and the seventh thin film transistor to be turned off, and the third thin film transistor, the fifth thin film transistor, and the sixth thin film transistor are turned on, and the light emission control line controls the first thin film transistor to be turned off;
  • the fourth thin film transistor drives the organic light emitting diode to emit light.
  • the driving method of the OLED pixel circuit of the invention has fewer control signals, simple timing, easy implementation of the circuit, and is convenient and practical.
  • FIG. 1 and 3 are circuit diagrams of a pixel of an organic light emitting diode according to Embodiment 1 of the present invention.
  • FIG. 5 is an equivalent circuit diagram of an initialization phase of a touch detection phase of the OLED pixel circuit of Embodiment 1 of the present invention.
  • FIG. 6 is an equivalent circuit diagram of a data voltage signal writing phase in a touch detection phase of the OLED pixel circuit of Embodiment 1 of the present invention.
  • FIG. 7 is an equivalent circuit diagram of a ground level writing phase of a touch detection phase of an organic light emitting diode pixel circuit according to Embodiment 1 of the present invention.
  • FIG. 8 is an equivalent circuit diagram of a signal phase generated by a touch detection in a touch detection phase of the OLED pixel circuit of Embodiment 1 of the present invention.
  • FIG. 9 is an equivalent circuit diagram of an initialization stage of an illuminating phase of an organic light emitting diode of an OLED pixel circuit according to Embodiment 1 of the present invention.
  • FIG. 10 is an equivalent circuit diagram of a data voltage signal writing phase of an organic light emitting diode of an organic light emitting diode pixel circuit according to Embodiment 1 of the present invention.
  • FIG. 11 is an equivalent circuit diagram of an illuminating phase of an organic light emitting diode of an OLED pixel circuit according to Embodiment 1 of the present invention.
  • T1 first thin film transistor
  • T2 second thin film transistor
  • T3 third thin film transistor
  • T4 fourth thin film transistor
  • T5 fifth thin film transistor
  • T6 sixth thin film transistor
  • T7 Seventh thin film transistor
  • T8 eighth thin film transistor
  • T9 ninth thin film transistor
  • T10 tenth thin film transistor
  • PD photodiode
  • OLED organic light emitting diode
  • DD power signal line
  • EM light control line
  • scan signal line data: data signal line
  • select touch signal level control line
  • Cst storage capacitor
  • sensor line sensor line.
  • This embodiment provides an OLED pixel circuit, as shown in FIG. 1, which includes: a data writing unit, a storage unit, a driving unit, an organic light emitting diode OLED, an illumination control unit, and a touch detection unit; wherein:
  • the data writing unit is configured to write the power voltage signal to the storage unit under the control of the light emission control line and the scanning signal line during the touch detection phase and the organic light emitting diode illumination phase, and to apply the data signal line voltage under the control of the scan signal line.
  • the signal is written to the storage unit;
  • the storage unit is configured to supply a voltage to the driving unit
  • the touch detection unit is configured to sense a touch under the touch signal level control line control during the touch detection phase, and generate a detection signal;
  • the driving unit is configured to convert the detection signal into a touch output signal under the control of the touch signal level control line during the touch detection phase, and output the touch output signal through the touch detection unit, for example, the touch output may be
  • the signal is output to the driving integrated circuit (the driving integrated circuit herein may be, for example, a driving integrated circuit of the touch panel), and the driving unit is further configured to provide a driving current for the organic light emitting diode during the illuminating stage of the OLED;
  • the illumination control unit is configured to conduct the driving unit and the organic light emitting diode under the control of the touch signal level control line during the illumination phase of the organic light emitting diode.
  • the data writing unit includes a first thin film transistor T1, a second thin film transistor ⁇ 2, a third thin film transistor ⁇ 3, a fifth thin film transistor ⁇ 5, a sixth thin film transistor ⁇ 6, and a seventh thin film transistor ⁇ 7;
  • the unit includes a storage capacitor Cst;
  • the driving unit includes a fourth thin film transistor T4;
  • the light emission control control unit includes an eighth thin film transistor T8;
  • the touch detection unit includes a photodiode PD, a ninth thin film transistor T9, and a tenth thin film transistor T10.
  • the cathode of the organic light emitting diode OLED is grounded. Further preferably, the organic light emitting diode OLED is an upper light emitting organic light emitting diode OLED;
  • a first thin film transistor T1 having a gate connected to the light emission control line and a drain connected to the ground;
  • a second thin film transistor ⁇ 2 having a gate connected to the scan signal line scan and a drain connected to the ground;
  • the third thin film transistor T3 has a gate connected to the scan signal line scan, and a drain a source of the first thin film transistor T1 is connected;
  • a storage capacitor Cst having a first end connected to a source of the third thin film transistor T3; a fourth thin film transistor T4 having a gate connected to a first end of the storage capacitor Cst; and a fifth thin film transistor T5 having a gate and a scan signal
  • the line scan is connected, the source is connected to the power signal line DD, and the drain is connected to the second end of the storage capacitor Cst and the source of the second thin film transistor T2;
  • a sixth thin film transistor T6 having a gate connected to the scan signal line scan, a source connected to the data signal line data, a drain connected to the source of the fourth thin film transistor T4, and a seventh thin film transistor T7 having a gate and a scan signal
  • the line scan is connected, the source is connected to the power signal line DD, the drain is connected to the source of the fourth thin film transistor T4, and the eighth thin film transistor T8 has a source connected to the drain of the fourth thin film transistor T4, the gate and the touch.
  • the signal level control line is selectively connected, and the drain is connected to the source of the first thin film transistor T1 and the anode of the organic light emitting diode OLED;
  • the cathode of the photodiode PD is connected to the first end of the storage capacitor Cst; the source of the ninth thin film transistor T9 is connected to the power signal line DD, the drain is connected to the anode of the photodiode PD, and the gate and the touch signal level control line are selected.
  • the source of the tenth thin film transistor T10 is connected to the drain of the fourth thin film transistor T4, the gate is selectively connected to the touch signal level control line, and the drain is connected to the sensor line sensor line.
  • the first thin film transistor T1, the second thin film transistor ⁇ 2, the seventh thin film transistor ⁇ 7, the ninth thin film transistor ⁇ 9, and the tenth thin film transistor T10 are preferably ⁇ -type thin film transistors, third thin film transistors ⁇ 3, and fourth.
  • the thin film transistor ⁇ 4, the fifth thin film transistor ⁇ 5, the sixth thin film transistor ⁇ 6, and the eighth thin film transistor ⁇ 8 are preferably ⁇ -type thin film transistors.
  • each of the thin film transistors is any one of a polysilicon thin film transistor, a single crystal silicon thin film transistor, an oxide thin film transistor, and an organic thin film transistor.
  • the OLED pixel circuit of the present embodiment includes a photodiode, which enables the display screen to directly sense the signal generated by the touch, thereby making the control circuit of the pixel simpler, the manufacturing steps simplified, and thereby improving the production efficiency and Product yield, the most important thing is to reduce production costs.
  • this hair The OLED pixel circuit of the OLED can compensate for the non-uniformity of the threshold voltage of the thin film transistor, thereby improving the picture uniformity of the organic light emitting display.
  • the production process has two layers of indium tin oxide thin film (the driving layer (Tx) and the sensing layer (Rx) included in the existing touch screen), the light transmittance can be effectively improved. Improve the display quality of the display.
  • the driving method of the OLED pixel circuit includes a touch signal detecting phase and driving the OLED OLED emitting phase.
  • the operation process of the OLED pixel circuit provided in Embodiment 1 of the present invention will be specifically described with reference to FIG. 1 and FIG.
  • Phase 1 The touch signal detection phase, which specifically includes:
  • Phase 101 Initialization phase, the equivalent circuit diagram is shown in Figure 5.
  • the data signal line data is at a low level
  • the scan signal line scan is at a low level
  • the second thin film transistor T2 and the seventh thin film transistor T7 are turned off and the third thin film transistor T3, the fifth thin film transistor ⁇ 5, and the sixth thin film transistor are controlled.
  • ⁇ 6 is turned on;
  • the illumination control line ⁇ is high level, and the first thin film transistor T1 is controlled to be turned on;
  • the touch signal level control line select is low level, and the eighth thin film transistor T8 is turned on and the touch signal detection module is turned off.
  • the power supply signal is transmitted to the second end of the storage capacitor Cst via the fifth thin film transistor T5, and the storage capacitor Cst is charged.
  • the voltage at the point A is the ground level, and its value is Vss, and the fourth thin film transistor T4 enters a saturated state.
  • Phase 102 Data voltage signal writing phase, the equivalent circuit diagram is shown in Figure 6.
  • the data signal line data is at a low level
  • the scan signal line scan is at a low level
  • the second thin film transistor T2 and the seventh thin film transistor T7 are controlled to be turned off
  • the third thin film transistor T3, the fifth thin film transistor ⁇ 5, and the sixth thin film transistor are controlled.
  • ⁇ 6 is turned on, the light-emitting control line is low
  • the first thin film transistor T1 is controlled to be off
  • the touch signal level control line is selected to be low level
  • the eighth thin film transistor T8 is turned on and the touch signal detecting module is turned off.
  • the fourth thin film transistor T4 is in a saturated state, and the data voltage signal is written to the point A via the sixth thin film transistor T6 and the fourth thin film transistor T4, the voltage at the point A is Vdata+Vth, the data data is the data signal line data voltage, and the Vth is the first Four thin film crystal The threshold voltage of the tube T4.
  • Phase 103 Ground level writing phase, the equivalent circuit diagram is shown in Figure 7.
  • the data signal line data is at a low level
  • the scan signal line scan is at a high level
  • the second thin film transistor T2 and the seventh thin film transistor T7 are controlled to be turned on
  • the third thin film transistor T3, the fifth thin film transistor ⁇ 5, and the sixth thin film are controlled.
  • the transistor ⁇ 6 is turned off;
  • the illuminating control line ⁇ is at a high level, and the first thin film transistor T1 is controlled to be turned on;
  • the touch signal level control line select is at a low level, and the eighth thin film transistor T8 is turned on and the touch signal detecting module is turned off.
  • Stage 104 The phase of the signal generated by the touch is detected.
  • the equivalent circuit diagram is shown in Figure 8. Wherein, the data signal line data is at a low level, the scan signal line scan is at a high level, and the second thin film transistor T2 and the seventh thin film transistor T7 are controlled to be turned on, and the third thin film transistor T3, the fifth thin film transistor ⁇ 5, and the sixth thin film are controlled.
  • the transistor ⁇ 6 is turned off; the illuminating control line ⁇ is at a high level, and the first thin film transistor T1 is controlled to be turned on; the touch signal level control line select is at a high level, and the eighth thin film transistor T8 is turned off and the touch signal detecting module is turned on.
  • the power signal is written into the drain of the fourth thin film transistor T4 via the seventh thin film transistor T7, and the drain voltage is VDD.
  • the photodiode PD is under illumination, the charge on the storage capacitor Cst is received by the photodiode PD.
  • the leakage current generated by the illumination is greatly reduced, causing the voltage at point A to drop drastically, and the voltage drop at point A causes the current flowing through the fourth thin film transistor T4 to decrease.
  • the photodiode PD is under touch (in this case, the light is weak or no light), it will generate less leakage current or no leakage current relative to the photodiode PD under illumination, and accordingly, flow through The current of the fourth thin film transistor T4 may become small or not change.
  • the current flowing through the fourth thin film transistor T4 can be transmitted through the tenth thin film transistor T10 and transmitted from the sensor line sensor line to the driving integrated circuit (not shown in FIG. 1) for detection and analysis.
  • Stage 2 Driving Organic Light Emitting Diodes OLED Lighting Stage
  • the touch signal level control line select is low, control touch
  • the touch signal detection module is turned off and the eighth thin film transistor T8 is turned on.
  • the stage specifically includes:
  • Phase 201 Precharge phase, the equivalent circuit diagram is shown in Figure 9.
  • the data signal line data is at a high level
  • the scan signal line scan is at a low level
  • the second thin film transistor T2 and the seventh thin film transistor T7 are turned off and the third thin film transistor T3, the fifth thin film transistor ⁇ 5, and the sixth thin film transistor are controlled.
  • ⁇ 6 is turned on;
  • the light-emitting control line ⁇ is at a high level, and the first thin film transistor T1 is controlled to be turned on.
  • the fourth thin film transistor ⁇ 4 enters a saturated state, and the defect level is Vss.
  • Stage 202 Data voltage signal writing phase, the equivalent circuit diagram is shown in Figure 10. Wherein, the data signal line data is at a high level, the scan signal line scan is at a low level, and the second thin film transistor T2 and the seventh thin film transistor T7 are turned off and the third thin film transistor T3, the fifth thin film transistor ⁇ 5, and the sixth thin film transistor are controlled. ⁇ 6 is turned on; the illuminating control line ⁇ is low level, and the first thin film transistor T1 is controlled to be turned off.
  • Stage 203 Organic Light Emitting Diode
  • the OLED lighting stage has an equivalent circuit diagram as shown in FIG. Wherein, the data signal line data is at a low level, the scan signal line scan is at a high level, and the second thin film transistor T2 and the seventh thin film transistor T7 are controlled to be turned on, and the third thin film transistor T3, the fifth thin film transistor ⁇ 5, and the sixth thin film are controlled.
  • the transistor ⁇ 6 is turned off; the illuminating control line ⁇ is at a low level, and the first thin film transistor T1 is controlled to be turned off.
  • the second terminal voltage of the storage capacitor Cst is the ground voltage Vss.
  • the first end of the storage capacitor Cst that is, the gate of the fourth thin film transistor T4
  • the current flowing through the fourth thin film transistor T4 is:
  • the current flowing through the fourth thin film transistor T4 has uniformity, so that the current flowing through the organic light emitting diode OLED is also uniform, and the organic light emitting diode OLED is a current type light emitting device, whereby the brightness of the organic light emitting diode OLED has Uniformity, in turn, improves the brightness uniformity of the picture of the organic light-emitting display.
  • the data signal line voltage Vdata may be a range, as shown by the rectangle drawn with the filling line in FIG. 2, that is, the data signal line voltage within a certain range can make the fourth film.
  • the transistor drives the organic light emitting diode to emit light.
  • the switching time between the above phase 1 and phase 2 is extremely short, that is, the detection of the touch is generated.
  • the signal and drive of the organic light emitting diode to illuminate to display the desired content is done in a very short time.
  • the driving method of the OLED pixel circuit of the embodiment has fewer control signals, simple timing, and the circuit is easy to implement, and is convenient and practical.
  • the first thin film transistor T1, the second thin film transistor ⁇ 2, the fourth thin film transistor ⁇ 4, the seventh thin film transistor ⁇ 7, the ninth thin film transistor ⁇ 9, and the tenth thin film transistor T10 may be set to a ⁇ type.
  • the third thin film transistor ⁇ 3, the fifth thin film transistor ⁇ 5, the sixth thin film transistor ⁇ 6, and the eighth thin film transistor ⁇ 8 are provided as ⁇ -type thin film transistors, and the pixel circuit diagram thereof is as shown in FIG.
  • the timing chart for driving the pixel circuit shown in FIG. 3 is as shown in FIG. 4, and since its working process is similar to that shown in FIG. 2, it will not be described here.
  • the on or off function of the thin film transistor it can be realized by changing the control level of the thin film transistor and correspondingly changing the type of the thin film transistor.
  • the first thin film transistor is of a ⁇ type
  • it is turned on under a high level control
  • it can also be changed to a ⁇ type and turned on under a low level control.
  • the types of thin film transistors controlled by the same level control signal in a certain unit in this embodiment can also be changed, as long as the unit realizes its original function and does not affect the original functions of other devices. Just play.
  • the seventh thin film transistor and the third thin film transistor, the fifth thin film transistor, and the sixth thin film The types of transistors are reversed, and the above control of these thin film transistors can be realized by controlling the level of the scanning signal lines.
  • the ninth thin film transistor and the tenth thin film transistor are opposite to the eighth thin film transistor type, the above control of the thin film transistors can be realized by controlling the level of the touch signal level control line.
  • the present embodiment provides a display device including the above-described organic light emitting diode pixel circuit, and of course, a known structure such as a substrate.
  • the display device may be an OLED display device or a product or component having a display function such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigation device, or the like using the OLED display technology.
  • the display device of the present embodiment includes the above-described organic light emitting diode pixel circuit, the overall thickness of the display device is thinner, the weight is lighter, and the production cost is further lowered.
  • the sensitivity of the display screen to the touch can be remarkably improved, and since the photodiode operates by sensing the change of the light, the floating touch can be realized on the display screen.

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Human Computer Interaction (AREA)
  • Computer Hardware Design (AREA)
  • Electroluminescent Light Sources (AREA)
  • Control Of El Displays (AREA)

Abstract

一种有机发光二极管（OLED）像素电路及其驱动方法和显示装置，属于显示技术领域，其可解决现有的内置型触摸屏的控制电路和制造工艺较为复杂的问题，使得触摸显示装置更薄更轻。所述有机发光二极管（OLED）像素电路包括：数据写入单元、存储单元、驱动单元、有机发光二极管、发光控制单元和触摸侦测单元；所述数据写入单元用于将电源电压信号写入所述存储单元和将数据信号线（data）电压信号写入所述存储单元；所述存储单元用于为所述驱动单元提供电压；所述触摸侦测单元用于感受触摸，并产生侦测信号；所述驱动单元用于将所述侦测信号转变为触控输出信号，所述触控输出信号经触摸侦测单元进行输出，同时驱动单元还用于为所述有机发光二极管（OLED）提供驱动电流；所述发光控制单元用于将所述驱动单元与有机发光二极管（OLED）导通。

Description

有机发光二极管像素电路及其驱动方法、 显示装置 技术领域
本发明属于触摸显示技术领域， 具体涉及一种有机发光二极 管像素电路及其驱动方法、 显示装置。 背景技术
触摸屏（ touch screen panel )是目前最简单、 方便、 自然的一 种人机交互设备， 已经在各种电子产品中得到了广泛应用， 如手 机， 笔记本电脑， 数码相机等。 触摸屏按照安装方式可以分为两 类： 外置型（external)触摸屏和内置型（in-cell)触摸屏。 外置型触摸 屏是在显示面板上面设置一个触摸装置， 触摸装置一般包括触摸 板和保护层 （如金刚玻璃） ， 触摸板设置在显示面板之上， 触摸 屏靠触摸板感知光线或压力的变化来工作。
内置型触摸屏技术是将触摸板感知信号的功能嵌入到像素电 路中， 通过加载控制电路， 使得显示屏具备感知触摸信号的能力。
发明人发现现有技术中至少存在如下问题： 对于内置型触摸 屏， 把触摸板感知信号的功能嵌入到像素电路中， 其控制电路较 为复杂， 制造工艺也较为复杂， 不利于产品良率和生产效率的提 高。 另外， 对于内置型触摸屏， 其像素的开口率会降低， 进而导 致显示屏显示品质下降。 发明内容
本发明所要解决的技术问题包括， 针对现有技术中内置型触 摸屏的控制电路和制造工艺较为复杂从而不利于提高产品良率和 生产效率的问题， 提供一种控制电路和制造工艺都较为简单的有 机发光二极管像素电路及其驱动方法、 显示装置。
解决本发明技术问题所采用的技术方案是一种有机发光二极 管像素电路， 其包括：
数据写入单元、 存储单元、 驱动单元、 有机发光二极管、 发 光控制单元和触摸侦测单元； 其中：
所述数据写入单元用于在触摸侦测阶段和有机发光二极管发 光阶段在发光控制线和扫描信号线的控制下将电源电压信号写入 所述存储单元， 并在扫描信号线的控制下将数据信号线电压信号 写入所述存储单元；
所述存储单元用于为所述驱动单元提供电压；
所述触摸侦测单元用于在触摸侦测阶段在触摸信号电平控制 线的控制下感受触摸， 并产生侦测信号；
所述驱动单元用于在触摸侦测阶段在触摸信号电平控制线的 控制下将所述侦测信号转变为触控输出信号， 并且所述触控输出 信号经触摸侦测单元进行输出， 同时驱动单元还用于在有机发光 二极管发光阶段为所述有机发光二极管提供驱动电流；
所述发光控制单元用于在有机发光二极管发光阶段在触摸信 号电平控制线的控制下将所述驱动单元与有机发光二极管导通。
优选的是， 所述存储单元包括存储电容。
优选的是， 所述驱动单元包括第四薄膜晶体管， 所述第四薄 膜晶体管的栅极与所述存储电容的第一端连接。
优选的是， 所述数据写入单元包括第一薄膜晶体管、 第二薄 膜晶体管、 第三薄膜晶体管、 第五薄膜晶体管、 第六薄膜晶体管 和第七薄膜晶体管； 其中：
所述第一薄膜晶体管的栅极与发光控制线连接， 所述第一薄 膜晶体管的漏极接地；
所述第二薄膜晶体管的栅极与扫描信号线连接， 所述第二薄 膜晶体管的漏极接地；
所述第三薄膜晶体管的栅极与扫描信号线连接， 所述第三薄 膜晶体管的漏极与所述第一薄膜晶体管的源极连接；
所述第五薄膜晶体管的栅极与扫描信号线连接， 所述第五薄 膜晶体管的源极与电源信号线连接， 所述第五薄膜晶体管的漏极 与所述存储电容的第二端和所述第二薄膜晶体管的源极连接； 所述第六薄膜晶体管的栅极与扫描信号线连接， 所述第六薄 膜晶体管的源极与数据信号线连接， 所述第六薄膜晶体管的漏极 与所述第四薄膜晶体管的源极连接；
所述第七薄膜晶体管的栅极与扫描信号线连接， 所述第七薄 膜晶体管的源极与电源信号线连接， 所述第七薄膜晶体管的漏极 与所述第四薄膜晶体管的源极连接。
优选的是， 所述有机发光二极管的阴极接地。
优选的是， 所述发光控制单元包括第八薄膜晶体管， 所述第 八薄膜晶体管的源极与所述第四薄膜晶体管的漏极连接， 所述第 八薄膜晶体管的栅极与触摸信号电平控制线连接， 所述第八薄膜 晶体管的漏极与所述第一薄膜晶体管的源极和有机发光二极管的 阳极连接。
优选的是， 所述触摸侦测单元包括光电二极管、 第九薄膜晶 体管和第十薄膜晶体管， 其中：
所述光电二极管的阴极与所述存储电容的第一端连接； 所述第九薄膜晶体管的源极与电源信号线连接， 所述第九薄 膜晶体管的漏极与所述光电二极管的阳极连接， 所述第九薄膜晶 体管的栅极与触摸信号电平控制线连接；
所述第十薄膜晶体管的源极与所述第四薄膜晶体管的漏极连 接， 所述第十薄膜晶体管的栅极与触摸信号电平控制线连接， 所 述第十薄膜晶体管的漏极与传感器线连接。
优选的是， 所述第一薄膜晶体管、 第二薄膜晶体管、 第七薄 膜晶体管、第九薄膜晶体管和第十薄膜晶体管是 N型薄膜晶体管， 而所述第三薄膜晶体管、 第四薄膜晶体管、 第五薄膜晶体管、 第 六薄膜晶体管和第八薄膜晶体管为 P型薄膜晶体管， 或者所述第 一薄膜晶体管、 第二薄膜晶体管、 第七薄膜晶体管、 第九薄膜晶 体管、 第四薄膜晶体管和第十薄膜晶体管是 P型薄膜晶体管， 而 所述第三薄膜晶体管、 第五薄膜晶体管、 第六薄膜晶体管和第八 薄膜晶体管为 N型薄膜晶体管。 优选的是，所述第一至第九薄膜晶体管为多晶硅薄膜晶体管、 单晶硅薄膜晶体管、 氧化物薄膜晶体管、 有机薄膜晶体管中的任 意一种。
优选的是，所述有机发光二极管为上发光型有机发光二极管。 本发明的有机发光二极管像素电路包括光电二极管， 其使得 显示屏具有能够直接感知触摸所产生的信号的能力， 从而使得像 素的控制电路更为简单， 制造步骤得到简化， 进而提高了生产效 率以及产品良率， 最重要是有利于降低生产成本。 同时， 本发明 的有机发光二极管像素电路能够补偿薄膜晶体管的阔值电压的非 均匀性， 从而能够提高有机发光显示器的画面均匀性。 另外， 生 产工艺上减少了两层氧化铟锡薄膜， 由此能有效提高光透过率， 从而提升显示屏的显示品质。
本发明还提供一种显示装置， 其包括上述的有机发光二极管 像素电路。
本发明的显示装置由于包括上述的有机发光二极管像素电 路， 因此显示装置的整体厚度更薄， 重量更轻， 生产成本也会进 一步降低。 通过在每个亚像素中设置上述电路可以明显地提高显 示屏感受触摸的灵敏度， 而且由于光电二极管是通过感受光线变 化来工作的， 所以能够在显示屏幕上实现浮动触摸。
本发明还提出了上述有机发光二极管像素电路的驱动方法， 包括触摸信号侦测阶段和驱动有机发光二极管发光阶段， 其中： 所述触摸信号侦测阶段包括：
扫描信号线控制所述第二薄膜晶体管和第七薄膜晶体管截止 及第三薄膜晶体管、 第五薄膜晶体管和第六薄膜晶体管导通， 所 述发光控制线控制所述第一薄膜晶体管导通， 所述触摸信号电平 控制线控制所述第八薄膜晶体管导通及触摸信号侦测模块关闭， 所述第四薄膜晶体管进入饱和状态；
扫描信号线控制所述第二薄膜晶体管和第七薄膜晶体管截止 及第三薄膜晶体管、 第五薄膜晶体管和第六薄膜晶体管导通， 所 述发光控制线控制所述第一薄膜晶体管截止， 所述触摸信号电平 控制线控制所述第八薄膜晶体管导通及触摸信号侦测模块关闭； 扫描信号线控制所述第二薄膜晶体管和第七薄膜晶体管导通 及第三薄膜晶体管、 第五薄膜晶体管和第六薄膜晶体管截止， 所 述发光控制线控制所述第一薄膜晶体管导通， 所述触摸信号电平 控制线控制所述第八薄膜晶体管导通及触摸信号侦测模块关闭； 扫描信号线控制所述第二薄膜晶体管和第七薄膜晶体管导通 及第三薄膜晶体管、 第五薄膜晶体管和第六薄膜晶体管截止， 所 述发光控制线控制所述第一薄膜晶体管导通， 所述触摸信号电平 控制线控制所述第八薄膜晶体管截止及触摸信号侦测模块导通； 所述驱动有机发光二极管发光阶段内， 触摸信号电平控制线 控制所述触摸信号侦测模块关闭及所述第八薄膜晶体管导通， 且 所述驱动有机发光二极管发光阶段包括：
扫描信号线控制所述第二薄膜晶体管和第七薄膜晶体管截止 及第三薄膜晶体管、 第五薄膜晶体管和第六薄膜晶体管导通， 所 述发光控制线控制所述第一薄膜晶体管导通， 所述第四薄膜晶体 管进入饱和状态；
扫描信号线控制所述第二薄膜晶体管和第七薄膜晶体管截止 及第三薄膜晶体管、 第五薄膜晶体管和第六薄膜晶体管导通， 所 述发光控制线控制所述第一薄膜晶体管截止；
扫描信号线控制所述第二薄膜晶体管和第七薄膜晶体管导通 及第三薄膜晶体管、 第五薄膜晶体管和第六薄膜晶体管截止， 所 述发光控制线控制所述第一薄膜晶体管截止， 所述第四薄膜晶体 管驱动有机发光二极管发光。
本发明的有机发光二极管像素电路的驱动方法控制信号少， 时序简单， 电路容易实现， 方便实用。 附图说明
图 1和图 3分别为本发明的实施例 1提供的有机发光二极管 像素电路图；
图 2和图 4分别为驱动图 1和图 3所示的有机发光二极管像 素电路的时序图；
图 5为本发明的实施例 1的有机发光二极管像素电路的触摸 侦测阶段的初始化阶段的等效电路图；
图 6为本发明的实施例 1的有机发光二极管像素电路的触摸 侦测阶段的数据电压信号写入阶段的等效电路图；
图 7为本发明的实施例 1的有机发光二极管像素电路的触摸 侦测阶段的接地电平写入阶段的等效电路图；
图 8为本发明的实施例 1的有机发光二极管像素电路的触摸 侦测阶段的侦测触摸产生的信号阶段的等效电路图；
图 9为本发明的实施例 1的有机发光二极管像素电路的有机 发光二极管发光阶段的初始化阶段的等效电路图；
图 10为本发明的实施例 1的有机发光二极管像素电路的有机 发光二极管发光阶段的数据电压信号写入阶段的等效电路图；
图 11为本发明的实施例 1的有机发光二极管像素电路的有机 发光二极管发光阶段的等效电路图；
其中附图标记为： T1 : 第一薄膜晶体管； T2: 第二薄膜晶体 管； T3: 第三薄膜晶体管； T4: 第四薄膜晶体管； T5: 第五薄膜 晶体管； T6: 第六薄膜晶体管； T7: 第七薄膜晶体管； T8: 第八 薄膜晶体管； T9: 第九薄膜晶体管； T10: 第十薄膜晶体管； PD: 光电二极管； OLED: 有机发光二极管； DD: 电源信号线； EM: 发光控制线； scan: 扫描信号线； data: 数据信号线； select: 触摸 信号电平控制线； Cst: 存储电容； sensor line: 传感器线。 具体实施方式
为使本领域技术人员更好地理解本发明的技术方案， 下面结 合附图和具体实施方式对本发明作进一步详细描述。 实施例 1 :
本实施例提供一种有机发光二极管像素电路， 如图 1所示， 其包括： 数据写入单元、存储单元、驱动单元、有机发光二极管 OLED、 发光控制控制单元和触摸侦测单元； 其中：
数据写入单元用于在触摸侦测阶段和有机发光二极管发光阶 段在发光控制线和扫描信号线的控制下将电源电压信号写入存储 单元， 并在扫描信号线的控制下将数据信号线电压信号写入存储 单元；
存储单元用于为驱动单元提供电压；
触摸侦测单元用于在触摸侦测阶段在触摸信号电平控制线控 制下感受触摸， 并产生侦测信号；
驱动单元用于在触摸侦测阶段在触摸信号电平控制线的控制 下将侦测信号转变为触控输出信号， 并经触摸侦测单元对触控输 出信号进行输出， 比如可以将触控输出信号输出到驱动集成电路 (这里的驱动集成电路可以为例如， 触摸面板的驱动集成电路）， 同时驱动单元还用于在有机发光二极管发光阶段为有机发光二极 管提供驱动电流；
发光控制单元用于在有机发光二极管发光阶段在触摸信号电 平控制线的控制下将驱动单元与有机发光二极管导通。 本实施例 中， 优选的， 数据写入单元包括第一薄膜晶体管 Tl、 第二薄膜晶 体管 Τ2、 第三薄膜晶体管 Τ3、 第五薄膜晶体管 Τ5、 第六薄膜晶 体管 Τ6和第七薄膜晶体管 Τ7; 存储单元包括存储电容 Cst; 驱动 单元包括第四薄膜晶体管 T4; 发光控制控制单元包括第八薄膜晶 体管 T8; 触摸侦测单元包括光电二极管 PD、 第九薄膜晶体管 T9 和第十薄膜晶体管 T10。
具体地，有机发光二极管 OLED的阴极接地。进一步优选的， 有机发光二极管 OLED为上发光型有机发光二极管 OLED;
第一薄膜晶体管 T1 , 其栅极与发光控制线 ΕΜ连接， 漏极接 地；
第二薄膜晶体管 Τ2,其栅极与扫描信号线 scan连接， 漏极接 地；
第三薄膜晶体管 T3 ,其栅极与扫描信号线 scan连接， 漏极与 第一薄膜晶体管 T1的源极连接；
存储电容 Cst, 其第一端与第三薄膜晶体管 T3的源极连接； 第四薄膜晶体管 T4, 其栅极与存储电容 Cst的第一端连接； 第五薄膜晶体管 T5,其栅极与扫描信号线 scan连接， 源极与 电源信号线 DD连接，漏极与存储电容 Cst的第二端和第二薄膜晶 体管 T2的源极连接；
第六薄膜晶体管 T6,其栅极与扫描信号线 scan连接， 源极与 数据信号线 data连接， 漏极与第四薄膜晶体管 T4的源极连接； 第七薄膜晶体管 T7,其栅极与扫描信号线 scan连接， 源极与 电源信号线 DD连接， 漏极与第四薄膜晶体管 T4的源极连接； 第八薄膜晶体管 T8, 其源极与第四薄膜晶体管 T4的漏极连 接，栅极与触摸信号电平控制线 select连接， 漏极与第一薄膜晶体 管 T1的源极和有机发光二极管 OLED的阳极连接；
光电二极管 PD的阴极与存储电容 Cst的第一端连接； 第九薄膜晶体管 T9的源极与电源信号线 DD连接，漏极与光 电二极管 PD的阳极连接，栅极与触摸信号电平控制线 select连接； 第十薄膜晶体管 T10的源极与第四薄膜晶体管 T4的漏极连 接，栅极与触摸信号电平控制线 select连接，漏极与传感器线 sensor line连接。
在本实施例中， 第一薄膜晶体管 Tl、 第二薄膜晶体管 Τ2、 第七薄膜晶体管 Τ7、 第九薄膜晶体管 Τ9和第十薄膜晶体管 T10 优选为 Ν 型薄膜晶体管， 第三薄膜晶体管 Τ3、 第四薄膜晶体管 Τ4、 第五薄膜晶体管 Τ5、 第六薄膜晶体管 Τ6和第八薄膜晶体管 Τ8优选为 Ρ型薄膜晶体管。
优选的， 各薄膜晶体管为多晶硅薄膜晶体管、 单晶硅薄膜晶 体管、 氧化物薄膜晶体管、 有机薄膜晶体管中的任意一种。
本实施例的有机发光二极管像素电路包括光电二极管， 其使 得显示屏具有能够直接感知触摸所产生的信号的能力， 从而使得 像素的控制电路更为简单， 制造步骤得到简化， 进而提高了生产 效率以及产品良率， 最重要是有利于降低生产成本。 同时， 本发 明的有机发光二极管像素电路能够补偿薄膜晶体管的阔值电压的 非均匀性， 从而能够提高有机发光显示器的画面均匀性。 另外， 由于生产工艺上减少了两层氧化铟锡薄膜（现有触摸屏中包括的 驱动层 （Tx )和感应层 （Rx ) 两层氧化铟锡薄膜） ， 因此能有效 提高光透过率， 从而提升了显示屏的显示品质。
如图 2所示， 有机发光二极管像素电路的驱动方法包括触摸 信号侦测阶段和驱动有机发光二极管 OLED发光阶段。 以下， 将 结合图 1和图 2对本发明实施例 1提供的有机发光二极管像素电 路的工作过程进行具体说明。
阶段 1 : 触摸信号侦测阶段， 其具体包括：
阶段 101 : 初始化阶段， 其等效电路图如图 5所示。 其中， 数据信号线 data为低电平， 扫描信号线 scan为低电平， 控制第二 薄膜晶体管 T2和第七薄膜晶体管 T7截止及第三薄膜晶体管 T3、 第五薄膜晶体管 Τ5和第六薄膜晶体管 Τ6导通； 发光控制线 ΕΜ 为高电平， 控制第一薄膜晶体管 T1 导通； 触摸信号电平控制线 select为低电平， 控制第八薄膜晶体管 T8导通及触摸信号侦测模 块关闭。
从而， 电源信号经由第五薄膜晶体管 T5传送到存储电容 Cst 的第二端， 对存储电容 Cst进行充电， A点电压为接地电平， 其值 为 Vss, 第四薄膜晶体管 T4进入饱和状态。
阶段 102: 数据电压信号写入阶段， 其等效电路图如图 6所 示。其中，数据信号线 data为低电平，扫描信号线 scan为低电平， 控制第二薄膜晶体管 T2和第七薄膜晶体管 T7截止且第三薄膜晶 体管 T3、 第五薄膜晶体管 Τ5和第六薄膜晶体管 Τ6导通， 发光控 制线 ΕΜ为低电平， 控制第一薄膜晶体管 T1截止， 触摸信号电平 控制线 select为低电平， 控制第八薄膜晶体管 T8导通及触摸信号 侦测模块关闭。
从而， 第四薄膜晶体管 T4处于饱和状态， 数据电压信号经由 第六薄膜晶体管 T6和第四薄膜晶体管 T4写入 A点， A点电压为 Vdata+Vth , Vdata为数据信号线 data电压， Vth为第四薄膜晶体 管 T4的阔值电压。
阶段 103: 接地电平写入阶段， 其等效电路图如图 7所示。 其中， 数据信号线 data为低电平， 扫描信号线 scan为高电平， 控 制第二薄膜晶体管 T2和第七薄膜晶体管 T7导通及第三薄膜晶体 管 T3、 第五薄膜晶体管 Τ5和第六薄膜晶体管 Τ6截止； 发光控制 线 ΕΜ为高电平， 控制第一薄膜晶体管 T1导通； 触摸信号电平控 制线 select为低电平， 控制第八薄膜晶体管 T8导通及触摸信号侦 测模块关闭。
从而， 接地电平 Vss经由第二薄膜晶体管 T2写入 B点， 此 时由于 A点悬空， A点电平由 Vdata+Vth变为 Vdata+Vth+Vss。
阶段 104: 侦测触摸产生的信号阶段， 其等效电路图如图 8 所示。 其中， 数据信号线 data为低电平， 扫描信号线 scan为高电 平， 控制第二薄膜晶体管 T2和第七薄膜晶体管 T7导通及第三薄 膜晶体管 T3、 第五薄膜晶体管 Τ5和第六薄膜晶体管 Τ6截止； 发 光控制线 ΕΜ为高电平， 控制第一薄膜晶体管 T1导通； 触摸信号 电平控制线 select为高电平， 控制第八薄膜晶体管 T8截止及触摸 信号侦测模块导通。
从而，电源信号经由第七薄膜晶体管 T7管写入第四薄膜晶体 管 T4的漏极， 漏极电压为 VDD, 此时， 如果光电二极管 PD处于 光照下，存储电容 Cst上的电荷由于光电二极管 PD受光照所产生 的漏电流而大幅减少， 导致 A点电压大幅下降， A点电压下降会 导致流经第四薄膜晶体管 T4的电流减小。 如果光电二极管 PD处 于触摸（此时光线减弱或无光照）之下， 相对于上述光电二极管 PD处在光照下的情况， 其会产生较小的漏电流或者没有漏电流产 生， 相应地， 流经第四薄膜晶体管 T4的电流会小幅变小或者不发 生变化。上述流经第四薄膜晶体管 T4的电流可经第十薄膜晶体管 T10并由传感器线 sensor line传输到驱动集成电路（图 1中未示出） 进行侦测解析。
阶段 2: 驱动有机发光二极管 OLED发光阶段
在该阶段内， 触摸信号电平控制线 select为低电平， 控制触 摸信号侦测模块关闭及第八薄膜晶体管 T8 导通， 该阶段具体包 括：
阶段 201 : 预充电阶段， 其等效电路图如图 9所示。 其中， 数据信号线 data为高电平， 扫描信号线 scan为低电平， 控制第二 薄膜晶体管 T2和第七薄膜晶体管 T7截止及第三薄膜晶体管 T3、 第五薄膜晶体管 Τ5和第六薄膜晶体管 Τ6导通； 发光控制线 ΕΜ 为高电平， 控制第一薄膜晶体管 T1导通。 第四薄膜晶体管 Τ4进 入饱和状态， 此时 Α点电平为 Vss。
阶段 202: 数据电压信号写入阶段， 其等效电路图如图 10所 示。其中，数据信号线 data为高电平，扫描信号线 scan为低电平， 控制第二薄膜晶体管 T2和第七薄膜晶体管 T7截止及第三薄膜晶 体管 T3、 第五薄膜晶体管 Τ5和第六薄膜晶体管 Τ6导通； 发光控 制线 ΕΜ为低电平， 控制第一薄膜晶体管 T1截止。
从而，存储电容 Cst经由第三薄膜晶体管 T3和第四薄膜晶体 管 T4 开始放电， 直到第四薄膜晶体管 T4 的栅极电压为 Vdata +Vth, 此时， 存储电容 Cst两端的电压为 VBA=VDD-Vdata-Vth。
阶段 203: 有机发光二极管 OLED发光阶段， 其等效电路图 如图 11所示。 其中， 数据信号线 data为低电平， 扫描信号线 scan 为高电平， 控制第二薄膜晶体管 T2和第七薄膜晶体管 T7导通及 第三薄膜晶体管 T3、第五薄膜晶体管 Τ5和第六薄膜晶体管 Τ6截 止； 发光控制线 ΕΜ为低电平， 控制第一薄膜晶体管 T1截止。
从而， 存储电容 Cst第二端 Β点电压为接地电压 Vss, 此时， 存储电容 Cst第一端也即第四薄膜晶体管 T4的栅极， 由于悬空发 生跳变， 使得存储电容 Cst 两端的电压恒定， 即 VAB= Vdata +Vth-VDD=Vgs„ 即， 存储电容 Cst两端的电压等于第四薄膜晶体 管 T4的栅源间电压。 此时， 流经第四薄膜晶体管 T4的电流为：
I=k(Vgs-Vth)2=k(Vdata+Vth-VDD-Vth)2=k(Vdata-VDD)2 由上式可知， 该电流与第四薄膜晶体管 T4 的阔值电压 Vth 和有机发光二极管 OLED两端的电压无关， 基本消除了阔值电压 非均匀性、 漂移以及有机发光二极管 OLED电气性能非均匀性的 影响， 因此流经第四薄膜晶体管 T4的电流具有均匀性， 从而流经 有机发光二极管 OLED 电流也具有均勾性， 而有机发光二极管 OLED是电流型发光器件， 由此有机发光二极管 OLED的亮度具 有均匀性， 进而提高了有机发光显示屏的画面的亮度均匀性。
需要说明的是，在阶段 201和阶段 202数据信号线电压 Vdata 可以是一个范围， 如图 2 中画有填充线的矩形所示， 即在一定范 围内的数据信号线电压均能使第四薄膜晶体管驱动有机发光二极 管发光。
还需要说明的是， 在有机发光二极管像素电路工作过程中， 由于像素电路对输入信号的反应十分迅速， 因此上述阶段 1 和阶 段 2之间的切换时间是极其短暂的， 即侦测触摸产生的信号与驱 动有机发光二极管发光从而显示所需内容是在极短的时间内完成 的。
本实施例的有机发光二极管像素电路的驱动方法控制信号 少， 时序简单， 电路容易实现， 方便实用。
此外， 在本实施例中， 还可以将第一薄膜晶体管 Tl、 第二薄 膜晶体管 Τ2、 第四薄膜晶体管 Τ4、 第七薄膜晶体管 Τ7、 第九薄 膜晶体管 Τ9和第十薄膜晶体管 T10设置为 Ρ型薄膜晶体管，将第 三薄膜晶体管 Τ3、 第五薄膜晶体管 Τ5、 第六薄膜晶体管 Τ6和第 八薄膜晶体管 Τ8设置为 Ν型薄膜晶体管， 其像素电路图如图 3 所示。 相应地， 驱动图 3所示的像素电路的时序图如图 4所示， 由于其工作过程与图 2所示类似， 故此在此不再赘述。
显然， 为了实现薄膜晶体管的导通或关断功能， 可以通过改 变该薄膜晶体管的控制电平和相应地改变该薄膜晶体管的类型来 实现。 比如， 第一薄膜晶体管为 Ν型时在高电平控制下导通， 也 可以将其改变为 Ρ型而在低电平控制下导通。 依照此思路也可以 改变本实施例中某个单元中的受同一个电平控制信号控制的各薄 膜晶体管的类型， 只要保证该单元实现其原有的功能以及不影响 其他器件的原有功能的发挥即可。 比如， 只要第二薄膜晶体管、 第七薄膜晶体管与第三薄膜晶体管、 第五薄膜晶体管和第六薄膜 晶体管的类型相反， 即可通过控制扫描信号线的电平来实现对这 些薄膜晶体管的上述控制。 只要所述第九薄膜晶体管和第十薄膜 晶体管与所述第八薄膜晶体管类型相反， 即可通过控制触摸信号 电平控制线的电平来实现对这些薄膜晶体管的上述控制。 实施例 2:
本实施例提供一种显示装置， 其包括上述的有机发光二极管 像素电路， 当然还包括如基板等已知的结构。 显示装置可以为 OLED显示装置或者使用 OLED显示技术的手机、 平板电脑、 电 视机、 显示器、 笔记本电脑、 数码相框、 导航仪等具有显示功能 的产品或部件。
本实施例的显示装置由于包括上述的有机发光二极管像素电 路， 因此显示装置的整体厚度更薄， 重量更轻， 生产成本也会进 一步降低。 通过在每个亚像素中设置上述电路可以明显地提高显 示屏感受触摸的灵敏度， 而且由于光电二极管是通过感受光线变 化来工作的， 所以能够在显示屏幕上实现浮动触摸。
可以理解的是， 以上实施方式仅仅是为了说明本发明的原理 而采用的示例性实施方式， 然而本发明并不局限于此。 对于本领 域内的普通技术人员而言， 在不脱离本发明的精神和实质的情况 下， 可以做出各种变型和改进， 这些变型和改进也视为本发明的 保护范围。

Claims

权 利 要 求 书
1. 一种有机发光二极管像素电路， 其特征在于， 包括： 数据写入单元、 存储单元、 驱动单元、 有机发光二极管、 发 光控制单元和触摸侦测单元； 其中：
所述数据写入单元用于在触摸侦测阶段和有机发光二极管发 光阶段在发光控制线和扫描信号线的控制下将电源电压信号写入 所述存储单元， 并在扫描信号线的控制下将数据信号线电压信号 写入所述存储单元；
所述存储单元用于为所述驱动单元提供电压；
所述触摸侦测单元用于在触摸侦测阶段在触摸信号电平控制 线控制下感受触摸， 并产生侦测信号；
所述驱动单元用于在触摸侦测阶段在触摸信号电平控制线的 控制下将所述侦测信号转变为触控输出信号， 并且所述触控输出 信号经所述触摸侦测单元进行输出， 同时驱动单元还用于在有机 发光二极管发光阶段为所述有机发光二极管提供驱动电流；
所述发光控制单元用于在有机发光二极管发光阶段在触摸信 号电平控制线的控制下将所述驱动单元与有机发光二极管导通。
2. 根据权利要求 1所述的有机发光二极管像素电路， 其特征 在于， 所述存储单元包括存储电容。
3. 根据权利要求 2所述的有机发光二极管像素电路， 其特征 在于， 所述驱动单元包括第四薄膜晶体管， 所述第四薄膜晶体管 的栅极与所述存储电容的第一端连接。
4. 根据权利要求 3所述的有机发光二极管像素电路， 其特征 在于， 所述数据写入单元包括第一薄膜晶体管、 第二薄膜晶体管、 第三薄膜晶体管、 第五薄膜晶体管、 第六薄膜晶体管和第七薄膜 晶体管； 其中： 所述第一薄膜晶体管的栅极与发光控制线连接， 所述第一薄 膜晶体管的漏极接地；
所述第二薄膜晶体管的栅极与扫描信号线连接， 所述第二薄 膜晶体管的漏极接地；
所述第三薄膜晶体管的栅极与扫描信号线连接， 所述第三薄 膜晶体管的漏极与所述第一薄膜晶体管的源极连接；
所述第五薄膜晶体管的栅极与扫描信号线连接， 所述第五薄 膜晶体管的源极与电源信号线连接， 所述第五薄膜晶体管的漏极 与所述存储电容的第二端和所述第二薄膜晶体管的源极连接； 所述第六薄膜晶体管的栅极与扫描信号线连接， 所述第六薄 膜晶体管的源极与数据信号线连接， 所述第六薄膜晶体管的漏极 与所述第四薄膜晶体管的源极连接；
所述第七薄膜晶体管的栅极与扫描信号线连接， 所述第七薄 膜晶体管的源极与电源信号线连接， 所述第七薄膜晶体管的漏极 与所述第四薄膜晶体管的源极连接。
5. 根据权利要求 4所述的有机发光二极管像素电路， 其特征 在于， 所述有机发光二极管的阴极接地。
6. 根据权利要求 5所述的有机发光二极管像素电路， 其特征 在于， 所述发光控制单元包括第八薄膜晶体管， 所述第八薄膜晶 体管的源极与所述第四薄膜晶体管的漏极连接， 所述第八薄膜晶 体管的栅极与触摸信号电平控制线连接， 所述第八薄膜晶体管的 漏极与所述第一薄膜晶体管的源极和有机发光二极管的阳极连 接。
7. 根据权利要求 6所述的有机发光二极管像素电路， 其特征 在于， 所述触摸侦测单元包括光电二极管、 第九薄膜晶体管和第 十薄膜晶体管， 其中：
所述光电二极管的阴极与所述存储电容的第一端连接； 所述第九薄膜晶体管的源极与电源信号线连接， 所述第九薄 膜晶体管的漏极与所述光电二极管的阳极连接， 所述第九薄膜晶 体管的栅极与触摸信号电平控制线连接；
所述第十薄膜晶体管的源极与所述第四薄膜晶体管的漏极连 接， 所述第十薄膜晶体管的栅极与触摸信号电平控制线连接， 所 述第十薄膜晶体管的漏极与传感器线连接。
8. 根据权利要求 7所述的有机发光二极管像素电路， 其特征 在于， 所述第二薄膜晶体管、 第七薄膜晶体管与所述第三薄膜晶 体管、 第五薄膜晶体管和第六薄膜晶体管的类型相反； 所述第九 薄膜晶体管和第十薄膜晶体管与所述第八薄膜晶体管类型相反； 且所述第四薄膜晶体管为 P型薄膜晶体管。
9. 根据权利要求 8所述的有机发光二极管像素电路， 其特征 在于， 所述第一薄膜晶体管、 第二薄膜晶体管、 第七薄膜晶体管、 第九薄膜晶体管和第十薄膜晶体管是 N型薄膜晶体管， 而所述第 三薄膜晶体管、 第四薄膜晶体管、 第五薄膜晶体管、 第六薄膜晶 体管和第八薄膜晶体管为 P型薄膜晶体管；
或者， 所述第一薄膜晶体管、 第二薄膜晶体管、 第七薄膜晶 体管、 第九薄膜晶体管、 第四薄膜晶体管和第十薄膜晶体管是 P 型薄膜晶体管， 而所述第三薄膜晶体管、 第五薄膜晶体管、 第六 薄膜晶体管和第八薄膜晶体管为 N型薄膜晶体管。
10. 根据权利要求 2至 9中任意一项所述的有机发光二极管 像素电路， 其特征在于， 所述第一至第九薄膜晶体管为多晶硅薄 膜晶体管、 单晶硅薄膜晶体管、 氧化物薄膜晶体管、 有机薄膜晶 体管中的任意一种。
11. 根据权利要求 1 所述的有机发光二极管像素电路， 其特 征在于， 所述有机发光二极管为上发光型有机发光二极管。
12. 一种显示装置， 其特征在于， 包括权利要求 1至 11任意 一项所述的有机发光二极管像素电路。
13. 一种权利要求 7 所述的有机发光二极管像素电路的驱动 方法， 其特征在于， 包括触摸信号侦测阶段和驱动有机发光二极 管发光阶段， 其中：
所述触摸信号侦测阶段包括：
扫描信号线控制所述第二薄膜晶体管和第七薄膜晶体管截止 及第三薄膜晶体管、 第五薄膜晶体管和第六薄膜晶体管导通， 所 述发光控制线控制所述第一薄膜晶体管导通， 所述触摸信号电平 控制线控制所述第八薄膜晶体管导通及触摸信号侦测模块关闭， 所述第四薄膜晶体管进入饱和状态；
扫描信号线控制所述第二薄膜晶体管和第七薄膜晶体管截止 及第三薄膜晶体管、 第五薄膜晶体管和第六薄膜晶体管导通， 所 述发光控制线控制所述第一薄膜晶体管截止， 所述触摸信号电平 控制线控制所述第八薄膜晶体管导通及触摸信号侦测模块关闭； 扫描信号线控制所述第二薄膜晶体管和第七薄膜晶体管导通 及第三薄膜晶体管、 第五薄膜晶体管和第六薄膜晶体管截止， 所 述发光控制线控制所述第一薄膜晶体管导通， 所述触摸信号电平 控制线控制所述第八薄膜晶体管导通及触摸信号侦测模块关闭； 扫描信号线控制所述第二薄膜晶体管和第七薄膜晶体管导通 及第三薄膜晶体管、 第五薄膜晶体管和第六薄膜晶体管截止， 所 述发光控制线控制所述第一薄膜晶体管导通， 所述触摸信号电平 控制线控制所述第八薄膜晶体管截止及触摸信号侦测模块导通； 所述驱动有机发光二极管发光阶段内， 触摸信号电平控制线 控制所述触摸信号侦测模块关闭及所述第八薄膜晶体管导通， 且 所述驱动有机发光二极管发光阶段包括：
扫描信号线控制所述第二薄膜晶体管和第七薄膜晶体管截止 及第三薄膜晶体管、 第五薄膜晶体管和第六薄膜晶体管导通， 所 述发光控制线控制所述第一薄膜晶体管导通， 所述第四薄膜晶体 管进入饱和状态；
扫描信号线控制所述第二薄膜晶体管和第七薄膜晶体管截止 及第三薄膜晶体管、 第五薄膜晶体管和第六薄膜晶体管导通， 所 述发光控制线控制所述第一薄膜晶体管截止；
扫描信号线控制所述第二薄膜晶体管和第七薄膜晶体管导通 及第三薄膜晶体管、 第五薄膜晶体管和第六薄膜晶体管截止， 所 述发光控制线控制所述第一薄膜晶体管截止， 所述第四薄膜晶体 管驱动有机发光二极管发光。
PCT/CN2013/088329 2013-07-31 2013-12-02 有机发光二极管像素电路及其驱动方法、显示装置 Ceased WO2015014056A1 (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US14/361,716 US9330604B2 (en) 2013-07-31 2013-12-02 Organic light-emitting diode pixel circuit, drive method thereof, and display device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201310329529.3A CN103413521B (zh) 2013-07-31 2013-07-31 有机发光二极管像素电路及其驱动方法、显示装置
CN201310329529.3 2013-07-31

Publications (1)

Publication Number Publication Date
WO2015014056A1 true WO2015014056A1 (zh) 2015-02-05

Family

ID=49606525

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2013/088329 Ceased WO2015014056A1 (zh) 2013-07-31 2013-12-02 有机发光二极管像素电路及其驱动方法、显示装置

Country Status (2)

Country Link
CN (1) CN103413521B (zh)
WO (1) WO2015014056A1 (zh)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI515712B (zh) * 2014-05-28 2016-01-01 友達光電股份有限公司 畫素補償電路
CN103996371B (zh) * 2014-05-30 2016-04-13 京东方科技集团股份有限公司 显示驱动电路、阵列基板及触摸显示装置
CN104064140B (zh) * 2014-06-09 2016-09-21 京东方科技集团股份有限公司 像素电路及其驱动方法、有机发光显示面板及显示装置
CN104103239B (zh) 2014-06-23 2016-05-04 京东方科技集团股份有限公司 有机发光二极管像素电路及其驱动方法
CN104217677B (zh) 2014-07-30 2016-08-24 京东方科技集团股份有限公司 触控显示电路及显示装置
CN104282265B (zh) 2014-09-26 2017-02-01 京东方科技集团股份有限公司 像素电路及其驱动方法、有机发光显示面板及显示装置
CN104269142B (zh) * 2014-10-28 2017-07-07 京东方科技集团股份有限公司 触摸驱动电路及其驱动方法
CN105810144B (zh) * 2014-12-30 2018-06-26 昆山工研院新型平板显示技术中心有限公司 像素电路及其驱动方法和有源矩阵有机发光显示器
CN108470543A (zh) * 2018-05-23 2018-08-31 武汉华星光电半导体显示技术有限公司 一种像素电路及其驱动方法、显示面板
CN109920830B (zh) * 2019-03-22 2021-02-02 京东方科技集团股份有限公司 一种显示面板、其驱动方法及显示装置
CN110444158B (zh) * 2019-08-19 2021-02-02 京东方科技集团股份有限公司 像素驱动电路及其驱动方法、显示面板及显示装置
CN110491337B (zh) 2019-08-27 2021-02-05 京东方科技集团股份有限公司 像素电路及其驱动方法、显示面板以及电子设备
CN114397975B (zh) * 2022-01-24 2024-04-09 武汉天马微电子有限公司 显示面板及其驱动方法和显示装置
CN115311998B (zh) 2022-10-11 2023-01-10 惠科股份有限公司 像素驱动电路及显示面板

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1669067A (zh) * 2001-10-31 2005-09-14 剑桥显示技术公司 电光显示器的显示驱动电路
TW200635351A (en) * 2005-03-28 2006-10-01 Ind Tech Res Inst Photo-sensing display unit
JP2011221327A (ja) * 2010-04-12 2011-11-04 Seiko Epson Corp 画素回路、電気光学装置およびその駆動方法
KR20120034502A (ko) * 2010-10-01 2012-04-12 엘지디스플레이 주식회사 터치센서 내장형 평판표시장치 및 그 구동방법
CN103208255A (zh) * 2013-04-15 2013-07-17 京东方科技集团股份有限公司 像素电路、像素电路驱动方法及显示装置
CN103218972A (zh) * 2013-04-15 2013-07-24 京东方科技集团股份有限公司 像素电路、像素电路驱动方法及显示装置
CN203502926U (zh) * 2013-07-31 2014-03-26 京东方科技集团股份有限公司 有机发光二极管像素电路和显示装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100660865B1 (ko) * 2005-06-08 2006-12-26 삼성전자주식회사 이미지 센서에서 공유된 배선/트랜지스터를 가지는 픽셀회로 및 구동 방법
CN102906807B (zh) * 2010-05-20 2015-06-17 夏普株式会社 带有触摸传感器的显示装置
JP5778961B2 (ja) * 2011-03-29 2015-09-16 株式会社Ｊｏｌｅｄ 表示装置および電子機器
TWI457678B (zh) * 2011-05-04 2014-10-21 Touch type electrophoretic display device
CN203520345U (zh) * 2013-07-31 2014-04-02 京东方科技集团股份有限公司 有机发光二极管像素电路和显示装置

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1669067A (zh) * 2001-10-31 2005-09-14 剑桥显示技术公司 电光显示器的显示驱动电路
TW200635351A (en) * 2005-03-28 2006-10-01 Ind Tech Res Inst Photo-sensing display unit
JP2011221327A (ja) * 2010-04-12 2011-11-04 Seiko Epson Corp 画素回路、電気光学装置およびその駆動方法
KR20120034502A (ko) * 2010-10-01 2012-04-12 엘지디스플레이 주식회사 터치센서 내장형 평판표시장치 및 그 구동방법
CN103208255A (zh) * 2013-04-15 2013-07-17 京东方科技集团股份有限公司 像素电路、像素电路驱动方法及显示装置
CN103218972A (zh) * 2013-04-15 2013-07-24 京东方科技集团股份有限公司 像素电路、像素电路驱动方法及显示装置
CN203502926U (zh) * 2013-07-31 2014-03-26 京东方科技集团股份有限公司 有机发光二极管像素电路和显示装置

Also Published As

Publication number Publication date
CN103413521A (zh) 2013-11-27
CN103413521B (zh) 2015-06-10

Similar Documents

Publication Publication Date Title
WO2015014056A1 (zh) 有机发光二极管像素电路及其驱动方法、显示装置
WO2015014077A1 (zh) 有机发光二极管像素电路及其驱动方法、显示装置
EP2887344B1 (en) Touch control display driving circuit, driving method thereof and display device
CN103383837B (zh) 一种触摸显示驱动电路、驱动方法及显示装置
KR101821519B1 (ko) 픽셀 회로, 그 구동 방법 및 디스플레이 디바이스
US9330604B2 (en) Organic light-emitting diode pixel circuit, drive method thereof, and display device
WO2014190636A1 (zh) 像素电路及其驱动方法、有机发光显示面板及显示装置
CN104299571B (zh) 一种像素电路、有机电致发光显示面板及显示装置
CN106952612B (zh) 像素电路、显示面板及其驱动方法
WO2015169006A1 (zh) 一种像素驱动电路及其驱动方法和显示装置
WO2019109673A1 (zh) 像素电路及其驱动方法、显示面板和显示设备
WO2015180344A1 (zh) 像素电路及其驱动方法、有机发光显示面板及显示装置
CN104269142B (zh) 触摸驱动电路及其驱动方法
WO2016192247A1 (zh) 有机电致发光触控面板、其驱动方法显示装置
CN203502926U (zh) 有机发光二极管像素电路和显示装置
CN104700782B (zh) Oeld像素电路、显示装置及控制方法
WO2014190621A1 (zh) 一种触摸显示驱动电路、方法和显示装置
WO2016074359A1 (zh) 像素电路、有机电致发光显示面板、显示装置及其驱动方法
WO2016045301A1 (zh) 像素电路及其驱动方法、有机发光显示面板及显示装置
WO2015169015A1 (zh) 像素驱动电路、驱动方法、阵列基板及显示装置
WO2015169014A1 (zh) 像素驱动电路及其驱动方法、阵列基板及显示装置
WO2016101504A1 (zh) 一种像素电路、有机电致发光显示面板及显示装置
CN203366702U (zh) 一种触摸显示驱动电路及显示装置
WO2015188533A1 (zh) 像素驱动电路、驱动方法、阵列基板及显示装置
CN108133947A (zh) 显示面板、显示设备及补偿方法

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 14361716

Country of ref document: US

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 13890427

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

32PN Ep: public notification in the ep bulletin as address of the adressee cannot be established

Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC (EPO FORM 1205A DATED 20/06/2016)

122 Ep: pct application non-entry in european phase

Ref document number: 13890427

Country of ref document: EP

Kind code of ref document: A1