WO2017049854A1 - Oled显示基板及其驱动方法和oled显示装置 - Google Patents

Oled显示基板及其驱动方法和oled显示装置 Download PDF

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Publication number
WO2017049854A1
WO2017049854A1 PCT/CN2016/073984 CN2016073984W WO2017049854A1 WO 2017049854 A1 WO2017049854 A1 WO 2017049854A1 CN 2016073984 W CN2016073984 W CN 2016073984W WO 2017049854 A1 WO2017049854 A1 WO 2017049854A1
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Prior art keywords
electrode
driving
light emitting
electrodes
oled
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PCT/CN2016/073984
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English (en)
French (fr)
Inventor
丁小梁
董学
王海生
陈小川
刘英明
任涛
刘伟
Original Assignee
京东方科技集团股份有限公司
北京京东方光电科技有限公司
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Priority to US15/505,787 priority Critical patent/US10452175B2/en
Publication of WO2017049854A1 publication Critical patent/WO2017049854A1/zh

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR 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; CALCULATING OR 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
    • G06F3/04164—Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
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    • 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
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G06F3/0443—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a single layer of sensing 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
    • 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
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/80—Constructional details
    • H10K50/805—Electrodes
    • H10K50/81—Anodes
    • H10K50/813—Anodes characterised by their shape
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/80—Constructional details
    • H10K50/805—Electrodes
    • H10K50/82—Cathodes
    • H10K50/822—Cathodes characterised by their shape
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/40—OLEDs integrated with touch screens
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/80—Constructional details
    • H10K59/805—Electrodes
    • H10K59/8051—Anodes
    • H10K59/80515—Anodes characterised by their shape
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/80—Constructional details
    • H10K59/805—Electrodes
    • H10K59/8052—Cathodes
    • H10K59/80521—Cathodes characterised by their shape
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR 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
    • 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
    • G09G2310/00—Command of the display device
    • G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
    • G09G2310/0243—Details of the generation of driving signals
    • G09G2310/0245—Clearing or presetting the whole screen independently of waveforms, e.g. on power-on
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00—Command of the display device
    • G09G2310/08—Details of timing specific for flat panels, other than clock recovery

Definitions

  • the present invention relates to the field of display technologies, and in particular, to an OLED display substrate, a driving method thereof, and an OLED display device.
  • OLEDs generally use a sandwich sandwich structure in which an organic layer is sandwiched between a cathode and an anode on both sides thereof. The holes are injected from the anode, electrons are injected from the cathode, and holes and electrons are transported in the organic layer and meet to form excitons. The excitons cause a radiation transition in the organic light-emitting molecules under the action of an electric field, thereby generating a luminescence phenomenon.
  • OLED Compared with LCD, OLED has the advantages of easy thinning, wide viewing angle, fast response time and high luminous efficiency.
  • Integrating touch functions into display devices is a trend in current advanced technology.
  • the prior art does not have a display device capable of integrating touch technology and OLED display technology.
  • Embodiments of the present invention provide an OLED display substrate, a driving method thereof, and an OLED display device, which are used to integrate a touch technology and an OLED display technology.
  • An embodiment of the present invention provides an OLED display substrate, including: a substrate substrate and a first electrode layer, a light emitting layer, and a second electrode layer above the substrate, wherein the light emitting layer is located on the first electrode layer and Between the two electrode layers, the first electrode layer includes a driving electrode and a corresponding sensing electrode, and a mutual capacitance is formed between the driving electrode and the corresponding sensing electrode.
  • the driving electrode and the sensing electrode may be alternately disposed in a row direction of the base substrate, and each driving electrode is in a column in a column direction of the base substrate Forming a plurality of the driving electrodes, and each of the driving electrodes in each column of the driving electrodes corresponds to an adjacent one of the sensing electrodes, and the driving electrodes in each row of the driving electrodes in the row direction of the substrate substrate Electrical connection.
  • Only one of the sensing electrodes may be formed in each column of the sensing electrodes in the column direction of the base substrate.
  • the second electrode layer may include a plurality of second electrodes
  • the light emitting layer may include a plurality of light emitting structures, each of the light emitting structures corresponding to one of the second electrodes, each of the second electrodes, and the second
  • the light-emitting structure corresponding to the electrode and the structure in the first electrode layer corresponding to the light-emitting structure form an OLED light-emitting device.
  • the OLED display substrate may further include a driving circuit on the base substrate.
  • the driving circuit is configured to reset in a reset phase and load a driving signal on the driving electrode, so that the corresponding sensing electrode senses a sensing signal according to the driving signal when a touch occurs;
  • the driving circuit is configured to load a reference voltage on the driving electrode and the corresponding sensing electrode in a display phase to cause the OLED light emitting device corresponding to the driving electrode to perform screen display.
  • the driving circuit may include a first switching tube, a second switching tube, a third switching tube, a fourth switching tube, a fifth switching tube, a sixth switching tube, and a storage capacitor.
  • the gate of the first switch tube is connected to the reset signal line, the first pole of the first switch tube is connected to the first node, and the second pole of the first switch tube is connected to the reset power source.
  • the gate of the second switch tube is connected to the first control line, the first pole of the second switch tube is connected to the first node, and the second pole of the second switch tube is connected to the second node.
  • a gate of the third switch transistor is connected to the first node, a first pole of the third switch transistor is connected to a first power source, and a second pole of the third switch transistor is connected to the second node .
  • the gate of the fourth switch tube is connected to the first control line, the first pole of the fourth switch tube is connected to the third node, and the second pole of the fourth switch tube is connected to the data line.
  • the gate of the fifth switch tube is connected to the second control line, the first pole of the fifth switch tube is connected to the first power source, and the second pole of the fifth switch tube is connected to the third node.
  • the gate of the sixth switch tube is connected to the third control line, the first pole of the sixth switch tube is connected to the second node, and the second pole of the sixth switch tube is connected to the OLED light-emitting device Second electrode.
  • the first end of the storage capacitor Connected to the third node, and the second end of the storage capacitor is connected to the first node.
  • a first electrode of the OLED light emitting device is coupled to the second power source.
  • Each of the drive electrodes may correspond to one or more rows of OLED light emitting devices.
  • Each OLED light emitting device may correspond to one driving circuit.
  • the sensing electrode can apply a fixed voltage during the reset phase.
  • the first electrode layer may include a cathode electrode of the light emitting structure
  • the second electrode layer may include an anode electrode of the light emitting structure
  • the embodiment of the invention further provides an OLED display device comprising the above OLED display substrate.
  • the embodiment of the invention further provides a driving method for an OLED display substrate, comprising: loading a driving signal on the driving electrode in a reset phase, so that the corresponding sensing electrode generates a touch according to the driving signal; Sensing the sensing signal; and loading a reference voltage on the driving electrode and the corresponding sensing electrode for display on the screen during the display phase.
  • the second electrode layer may include a plurality of second electrodes
  • the light emitting layer may include a plurality of light emitting structures, each of the light emitting structures corresponding to one of the second electrodes, each of the second electrodes, and the second
  • the corresponding light-emitting structure of the electrode and the structure in its corresponding first electrode layer form an OLED light-emitting device.
  • the OLED display substrate may further include a driving circuit on the base substrate, in the driving method, in a reset phase, the driving circuit performs resetting and loading a driving signal on the driving electrode to The sensing electrode senses the sensing signal when the touch occurs according to the driving signal; in the display phase, the driving circuit loads the reference voltage on the driving electrode and the corresponding sensing electrode respectively The OLED light emitting device corresponding to the driving electrode is displayed on the screen.
  • the first electrode layer includes a driving electrode and a corresponding sensing electrode, and a mutual capacitance is formed between the driving electrode and the corresponding sensing electrode, thereby touching Integration of control technology and OLED display technology.
  • FIG. 1 is a schematic structural view of an OLED display substrate according to an embodiment of the invention.
  • FIG. 2 is a schematic structural view of the first electrode layer of FIG. 1.
  • FIG. 2 is a schematic structural view of the first electrode layer of FIG. 1.
  • FIG. 3 is a schematic diagram of a plurality of OLED light emitting devices corresponding to one driving electrode of FIG. 2.
  • FIG. 4 is a schematic diagram of a drive electrode in accordance with an embodiment of the present invention.
  • FIG. 5 is a circuit diagram of a driving circuit in accordance with an embodiment of the present invention.
  • FIG. 6 is a schematic diagram showing a frame of a screen using the driving circuit of the driving electrode of FIG. 4.
  • Fig. 7 is a timing chart of the driving circuit of Fig. 5.
  • FIG. 1 is a schematic structural view of an OLED display substrate according to an embodiment of the invention
  • FIG. 2 is a schematic structural view of the first electrode layer 12 of FIG.
  • the OLED display substrate comprises: a substrate substrate 11 and a first electrode layer 12, a light-emitting layer 13 and a second electrode layer 14 above the substrate substrate 11, and the light-emitting layer 13 is located at the first electrode.
  • the second electrode layer 14 the light emitting layer 13, and the first electrode layer 11 are sequentially located above the base substrate 11 in a direction away from the base substrate 11.
  • the first electrode layer 12 includes a driving electrode 121 and a corresponding sensing electrode 122, and a mutual capacitance is formed between the driving electrode 121 and the corresponding sensing electrode 122.
  • the light-emitting layer 13 includes an electron transport layer (Electron Transport Layer, ETL) 131, an organic light-emitting layer (EMM) 132, and a hole transport layer (HTL). :HTL) 133, and the organic light-emitting layer 132 is located between the electron transport layer 131 and the hole transport layer 133.
  • ETL electron transport Layer
  • EEM organic light-emitting layer
  • HTL hole transport layer
  • the first electrode layer 12 includes a cathode electrode
  • the second electrode layer 14 includes an anode electrode, and vice versa. Accordingly, the electron transport layer 131 is located between the first electrode layer 12 and the organic light emitting layer 132, and the hole transport layer 133 is located between the second electrode layer 14 and the organic light emitting layer 132.
  • the driving electrode 121 and the sensing electrode 122 in the first electrode layer 12 may be disposed in a row and row arrangement. As shown in FIG. 2, alternatively, the driving electrodes 121 and the sensing electrodes 122 are alternately disposed in the row direction of the base substrate, and a plurality of driving electrodes are formed in each of the driving electrodes 121 in the column direction of the substrate substrate. 121, and each of the driving electrodes 121 in each of the driving electrodes 121 corresponds to an adjacent one of the sensing electrodes 122, and is electrically connected between the driving electrodes 121 in each row of the driving electrodes 121 in the row direction of the substrate.
  • FIG. 2 shows only five rows and four columns of driving electrodes 121 and two columns of sensing electrodes 122.
  • the driving electrodes 121 to the fifth row of the driving electrodes 121 are respectively Tx1, Tx2, Tx3, Tx4, and Tx5, wherein each of the driving electrodes 121 includes four driving electrodes 121, and the four driving electrodes 121 have the same name.
  • the names of the four driving electrodes 121 in the first row of driving electrodes 121 are both Tx1, and so on.
  • the first column of sensing electrodes 122 is Rx1, the first column of sensing electrodes 122 is Rx2, the first column of sensing electrodes 122 is located between the first column of driving electrodes 121 and the second column of driving electrodes 121, and the first column of sensing electrodes 122 is located
  • the first column of the drive electrode 121 and the penultimate column of the horse-region movable electrode 121 are connected.
  • each column of sensing electrodes 122 is a unitary structure.
  • the second electrode layer 14 includes a plurality of second electrodes
  • the light emitting layer 13 includes a plurality of light emitting structures, each of which includes an electron transport layer 131, an organic light emitting layer 132, and a hole transport layer 133, and each light emitting structure corresponds to
  • An OLED light-emitting device is formed on a second electrode, each of the second electrodes and a corresponding light-emitting structure and a structure in the first electrode layer 12 corresponding to the light-emitting structure.
  • Each of the drive electrodes 121 may correspond to one or more OLED light emitting devices.
  • each of the driving electrodes 121 corresponds to a plurality of OLED light emitting devices
  • FIG. 3 is a schematic diagram of a plurality of OLED light emitting devices corresponding to one driving electrode 121 of FIG. Figure. As shown in FIG. 3, each of the driving electrodes 121 corresponds to a 3-row, 9-column OLED light-emitting device.
  • the OLED display substrate further includes: a driving circuit on the substrate substrate 11.
  • the driving circuit is configured to reset during the reset phase and load a driving signal on the driving electrode 121 for the corresponding sensing electrode 122 to sense the sensing signal when the touch occurs according to the driving signal.
  • the driving circuit is further configured to load a reference voltage on the driving electrode 121 and the corresponding sensing electrode 122 respectively in the display phase to cause the OLED light emitting device corresponding to the driving electrode 121 to display a picture.
  • the entire OLED display substrate includes 12 rows of driving electrodes, and the first row of driving electrodes to the 12th row of driving electrodes are Tx1, Tx2, ..., Tx11, and Tx12, respectively.
  • other rows of drive electrodes can also be set according to product requirements.
  • FIG. 5 is a circuit diagram of a driving circuit in accordance with an embodiment of the present invention.
  • the driving circuit includes a first switching transistor T1, a second switching transistor T2, a third switching transistor T3, a fourth switching transistor T4, a fifth switching transistor T5, a sixth switching transistor T6, and a storage capacitor C1.
  • the second electrode of the OLED light emitting device is connected to the second electrode of the sixth switching transistor T6, and the first electrode layer of the OLED light emitting device is connected to the second power source.
  • the first electrode layer includes a cathode
  • the second electrode layer includes an anode.
  • the anode of the OLED light emitting device is then connected to the second pole of the sixth switching transistor T6, and the cathode of the OLED light emitting device is connected to the second power source.
  • the gate of the first switching transistor T1 is connected to the reset signal line Reset, the first pole of the first switching transistor T1 is connected to the first node N1, and the second pole of the first switching transistor T1 is connected to the reset power source Vinit.
  • the gate of the second switching transistor T2 is connected to the first control line Gate, the first pole of the second switching transistor T2 is connected to the first node N1, and the second pole of the second switching transistor T2 is connected to the second node N2.
  • the gate of the third switching transistor T3 is connected to the first node N1, the first pole of the third switching transistor T3 is connected to the first power source ELVDD, and the second pole of the third switching transistor T3 is connected to the second node N2.
  • the gate of the fourth switching transistor T4 is connected to the first control line Gate, and the first pole of the fourth switching transistor T4 is connected to the third section. At point N3, the second pole of the fourth switching transistor T4 is connected to the data line Data.
  • the gate of the fifth switching transistor T5 is connected to the second control line EM2, the first pole of the fifth switching transistor T5 is connected to the first power source ELVDD, and the second pole of the fifth switching transistor T5 is connected to the third node N3.
  • the gate of the sixth switching transistor T6 is connected to the third control line EM1, the first pole of the sixth switching transistor T6 is connected to the second node N2, and the second pole of the sixth switching transistor T6 is connected to the anode of the OLED lighting device.
  • the first end of the storage capacitor C1 is connected to the third node N3, and the second end of the storage capacitor C1 is connected to the first node N1.
  • the cathode of the OLED light emitting device is connected to the second power source ELVSS.
  • FIG. 6 is a schematic diagram showing a frame of a driving circuit using the driving electrodes of FIG. 4, and FIG. 7 is a timing chart of the driving circuit of FIG. 5.
  • the first row of driving electrodes Tx1 is taken as an example.
  • the first row of driving electrodes Tx1 corresponds to a plurality of rows of OLED light emitting devices, and each row of OLED light emitting devices may include a plurality of OLED light emitting devices.
  • Each OLED light emitting device corresponds to one driving circuit.
  • the multi-row OLED light-emitting device corresponding to the first row of driving electrodes Tx1 first enters the reset phase.
  • the reset signal line Reset outputs a first control signal to the gate of the first switching transistor T1 to turn on the first switching transistor T1, and the first control signal may be a high level;
  • the first control line Gate is directed to The gate of the second switch tube T2 and the gate of the fourth switch tube T4 output a second control signal to turn off the second switch tube T2 and the fourth switch tube T4, the second control signal can be a low level;
  • the second control The line EM2 outputs a third control signal to the gate of the fifth switching transistor T5 to turn off the fifth switching transistor T5, the third control signal may be a low level;
  • the third control line EM1 is to the gate of the sixth switching transistor T6
  • the fourth control signal is output to turn off the sixth switching transistor T6, which may be at a low level.
  • the reset power source Vinit outputs a reset signal to the first node N1 through the turned-on first switch transistor T1 to reset the voltage of the gate of the third switch transistor T3 to 0V, thereby turning off the third switch transistor T3.
  • a driving signal is loaded on the driving electrode Tx1 of the first row, so that the corresponding sensing electrode senses the sensing signal when the touch occurs according to the driving signal.
  • driving a signal square wave signal.
  • the sensing electrode loads a fixed voltage during the reset phase.
  • the OLED light-emitting device corresponding to the driving electrode Tx1 of the first row is displayed in black, so that the driving electrode Tx1 is not loaded in the first row.
  • the influence of the drive signal on the display shows an indeterminate flicker.
  • the multi-row OLED light-emitting device corresponding to the first row of driving electrodes Tx1 enters the display phase after completing the reset phase.
  • the display phase may include a charging phase, a compensation phase, and a lighting phase.
  • Each row of OLED light-emitting devices corresponding to the first row of driving electrodes Tx1 sequentially enters the display phase.
  • the reset signal line Reset outputs a first control signal to the gate of the first switching transistor T1 to turn off the first switching transistor T1, and the first control signal may be a low level;
  • the first control line Gate is second.
  • the gate of the switch tube T2 and the gate of the fourth switch tube T4 output a second control signal to turn on the second switch tube T2 and the fourth switch tube T4, the second control signal may be a high level;
  • the EM2 outputs a third control signal to the gate of the fifth switching transistor T5 to turn off the fifth switching transistor T5, the third control signal may be a low level; and the third control line EM1 outputs to the gate of the sixth switching transistor T6.
  • the fourth control signal is to turn off the sixth switching transistor T6, and the fourth control signal may be at a low level.
  • the data line Data outputs the data voltage Vdata to the first end of the storage capacitor C1 (ie, the third node N3) through the turned-on fourth switch T4, and the second end of the storage capacitor C1 (ie, the first node N1)
  • the voltage is boosted by the first terminal to Vdata to turn on the third switching transistor T3, and the first power source ELVDD is respectively turned to the second end of the storage capacitor C1 through the turned-on third switching transistor T3 and the second switching transistor T2 (ie, The first node N1) outputs the first power supply voltage Vdd. Since the first power supply voltage Vdd passes through the third switching transistor T3, the voltage of the first node N1 is Vdd-Vth, where Vth is the threshold of the third switching transistor T3. Voltage.
  • the reset signal line Reset outputs a first control signal to the gate of the first switching transistor T1 to turn off the first switching transistor T1, and the first control signal may be a low level;
  • the first control line Gate is second.
  • the gate of the switch tube T2 and the gate of the fourth switch tube T4 output a second control signal to turn off the second switch tube T2 and the fourth switch tube T4, the second control signal may be a low level;
  • the EM2 outputs a third control signal to the gate of the fifth switching transistor T5 to turn on the fifth switching transistor T5, the third control signal may be a high level; and the third control line EM1 outputs to the gate of the sixth switching transistor T6.
  • the fourth control signal is to turn off the sixth switching transistor T6, and the fourth control signal may be at a low level.
  • the first power source ELVDD passes through the fifth switch tube T5 that is turned on.
  • the first power supply voltage Vdd is outputted to the first end of the storage capacitor C1 (ie, the third node N3), and the voltage of the first end of the storage capacitor C1 (ie, the third node N3) is abruptly changed to Vdd due to the storage capacitor C1
  • the voltage difference does not change, so the voltage at the second end of the storage capacitor C1 (ie, the first node N1) is abruptly changed to 2Vdd-Vdata-Vth.
  • the reset signal line Reset outputs a first control signal to the gate of the first switching transistor T1 to turn off the first switching transistor T1, and the first control signal may be a low level;
  • the first control line Gate is second.
  • the gate of the switch tube T2 and the gate of the fourth switch tube T4 output a second control signal to turn off the second switch tube T2 and the fourth switch tube T4, the second control signal may be a low level;
  • the EM2 outputs a third control signal to the gate of the fifth switching transistor T5 to turn off the fifth switching transistor T5, the third control signal may be a low level; and the third control line EM1 outputs to the gate of the sixth switching transistor T6.
  • the fourth control signal is to turn on the sixth switching transistor T6, and the fourth control signal may be at a high level. Since the voltage of the second end of the storage capacitor C1 (ie, the first node N1) is 2Vdd-Vdata-Vth, the third switch T3 is turned on. Further, since the sixth switching transistor T6 is turned on, the OLED light emitting device emits light. At this time, the current flowing through the OLED light emitting device is:
  • K is the process parameter and V GS is the gate-source voltage of the third switching transistor T3.
  • V GS is the gate-source voltage of the third switching transistor T3.
  • the threshold voltage Vth of the switching transistor is eliminated in the above formula, so that the current flowing through the OLED light emitting device is not affected by the threshold voltage Vth of the switching transistor, thereby making the light emission of the OLED light emitting device stable.
  • the second power source ELVSS loads the reference voltage Vss on the cathodes of the first row of OLED light-emitting devices corresponding to the first row of driving electrodes Tx1 (ie, corresponding driving electrodes and sensing electrodes) to Perform a screen display.
  • each row of OLEDs corresponding to the driving electrode Tx1 in the first row is shown.
  • the rows of OLED light-emitting devices corresponding to the driving electrode Tx12 enter the display phase;
  • the rows of OLED light-emitting devices corresponding to the driving electrode Tx2 enter the reset phase, the rows of OLED light-emitting devices corresponding to the driving electrode Tx1 enter the display phase.
  • the next row of driving electrodes of the row driving electrodes enters the reset phase.
  • the above scheme can better utilize time in the process of touch (occurring in the reset phase) and display (occurring in the display phase), and reduces the influence of the touch operation on the screen display.
  • the first electrode layer includes a driving electrode and a corresponding sensing electrode, and a mutual capacitance is formed between the driving electrode and the corresponding sensing electrode, thereby integrating the touch technology and the OLED display technology.
  • Chemical. The touch operation is performed during the reset phase, and the screen display is performed during the display phase, which reduces the influence of the touch operation on the screen display.
  • the next row of driving electrodes of the row driving electrodes enters the reset phase, so there is no need for a touch operation of the reset phase of the next row of driving electrodes and a display phase of the display layer of the upper row of driving electrodes
  • the display performs time-sharing operations, enabling simultaneous touch operations and screen display.
  • the touch operation is performed in the reset phase, and there is no charging and discharging process during the touch operation, thereby eliminating the influence of the touch parasitic capacitance and achieving a high-quality touch effect.
  • the embodiment of the present invention further provides an OLED display device, which includes an OLED display substrate, and the OLED display substrate can adopt the OLED display substrate in the first embodiment, and details are not described herein.
  • the first electrode layer includes a driving electrode and a corresponding sensing electrode, and a mutual capacitance is formed between the driving electrode and the corresponding sensing electrode, thereby integrating the touch technology and the OLED display technology.
  • Chemical. The touch operation is performed during the reset phase, and the screen display is performed during the display phase, which reduces the influence of the touch operation on the screen display.
  • the next row of driving electrodes of the row driving electrodes enters the reset phase, so there is no need for a touch operation of the reset phase of the next row of driving electrodes and a display phase of the display layer of the upper row of driving electrodes Display for time-sharing operation, enabling simultaneous touch operation and screen display Show.
  • the touch operation is performed in the reset phase, and there is no charging and discharging process during the touch operation, thereby eliminating the influence of the touch parasitic capacitance and achieving a high-quality touch effect.
  • An embodiment of the present invention further provides a driving method of an OLED display substrate, the OLED display substrate comprising a substrate substrate and a first electrode layer, a light emitting layer and a second electrode layer above the substrate, wherein the light emitting layer is located at the first electrode Between the layer and the second electrode layer.
  • the second electrode layer, the light emitting layer and the first electrode layer are sequentially located above the substrate in a direction away from the substrate, the first electrode layer comprising the driving electrode and the corresponding sensing electrode, the driving electrode and the corresponding Forming a mutual capacitance between the sensing electrodes, the method comprising: loading a driving signal on the driving electrode during the resetting phase, so that the corresponding sensing electrode senses the sensing when the touch occurs according to the driving signal a signal; in the display phase, a reference voltage is respectively applied to the driving electrode and the corresponding sensing electrode to perform screen display.
  • the second electrode layer includes a plurality of second electrodes
  • the light emitting layer includes a plurality of light emitting structures, each of the light emitting structures corresponding to one of the second electrodes, each of the second electrodes and its corresponding light emitting
  • the structure and its corresponding structure in the first electrode layer form an OLED light emitting device.
  • the OLED display substrate further includes a driving circuit on the substrate. In the reset phase, the driving circuit performs resetting and loading a driving signal on the driving electrode, so that the corresponding sensing electrode senses the sensing signal according to the driving signal when the touch occurs. In the display phase, the driving circuit loads a reference voltage on the driving electrode and the corresponding sensing electrode respectively to cause the OLED light emitting device corresponding to the driving electrode to perform screen display.
  • the next row of drive electrodes of the row drive electrodes enters a reset phase.
  • the driving method of the OLED display substrate provided in this embodiment can be used to drive the OLED display substrate of the embodiment of the present invention. Therefore, the detailed description of the OLED display substrate can be referred to the foregoing description, and details are not described herein again.
  • the first electrode layer includes a driving electrode and a corresponding sensing electrode, and a mutual capacitance is formed between the driving electrode and the corresponding sensing electrode, thereby adopting a touch technology and an OLED.
  • Display technology Integration The touch operation is performed during the reset phase, and the screen display is performed during the display phase, which reduces the influence of the touch operation on the screen display.
  • the next row of driving electrodes of the row driving electrodes enters the reset phase, so there is no need for a touch operation of the reset phase of the next row of driving electrodes and a display phase of the display layer of the upper row of driving electrodes
  • the display performs time-sharing operations, enabling simultaneous touch operations and screen display.
  • the touch operation is performed in the reset phase, and there is no charging and discharging process during the touch operation, thereby eliminating the influence of the touch parasitic capacitance and achieving a high-quality touch effect.

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Abstract

OLED显示基板及其驱动方法和OLED显示装置。该OLED显示基板包括：衬底基板（11）和位于所述衬底基板（11）上方的第一电极层（12）、发光层（13）和第二电极层（14），所述发光层（13）位于第一电极层（12）和第二电极层（14）之间；所述第一电极层（12）包括驱动电极（121）和对应的感应电极（122），且所述驱动电极（121）和所述对应的感应电极（122）之间形成互电容。从而将触控技术和OLED显示技术一体化。

Description

OLED显示基板及其驱动方法和OLED显示装置 技术领域
本发明涉及显示技术领域，特别涉及OLED显示基板及其驱动方法和OLED显示装置。
背景技术
有机电致发光器件(Organic Light-emitting Devices，简称：OLED)通常采用三明治式夹层结构，即，有机层夹在其两侧的阴极和阳极之间。空穴从阳极注入，电子从阴极注入，并且空穴和电子在有机层中传输并相遇之后会形成激子，激子在电场作用下在有机发光分子中引起辐射跃迁，从而产生发光现象。OLED相比于LCD，具有易轻薄化、视角宽、响应时间快和发光效率高等优点。
将触控功能整合到显示装置中是目前先进技术的趋势。但是，现有技术还没有一种能够将触控技术和OLED显示技术一体化的显示装置。
发明内容
本发明实施例提供OLED显示基板及其驱动方法和OLED显示装置，用于将触控技术和OLED显示技术一体化。
本发明实施例提供了一种OLED显示基板，包括：衬底基板和位于所述衬底基板上方的第一电极层、发光层和第二电极层，所述发光层位于第一电极层和第二电极层之间，所述第一电极层包括驱动电极和对应的感应电极，所述驱动电极和所述对应的感应电极之间形成互电容。
在所述衬底基板的行方向上所述驱动电极和所述感应电极可交替设置，在所述衬底基板的列方向上每个驱动电极所在列中均 形成有多个所述驱动电极，且每列驱动电极中的各驱动电极均与其相邻的一列感应电极相对应，在所述衬底基板的行方向上每行驱动电极中的所述驱动电极之间电连接。
在所述衬底基板的列方向上每个感应电极所在列中可只形成有一个所述感应电极。
所述第二电极层可包括多个第二电极，所述发光层可包括多个发光结构，每个发光结构对应于一个所述第二电极，每个所述第二电极、与该第二电极对应的发光结构以及与该发光结构对应的第一电极层中的结构形成一个OLED发光器件。
所述OLED显示基板还可包括位于所述衬底基板上的驱动电路。所述驱动电路用于在重置阶段进行重置并在所述驱动电极上加载驱动信号，以供所述对应的感应电极根据所述驱动信号在触控发生时感测出感测信号；所述驱动电路用于在显示阶段分别在所述驱动电极和所述对应的感应电极上加载参考电压以使所述驱动电极对应的OLED发光器件进行画面显示。
所述驱动电路可包括第一开关管、第二开关管、第三开关管、第四开关管、第五开关管、第六开关管和存储电容。所述第一开关管的栅极连接至复位信号线，所述第一开关管的第一极连接至第一节点，所述第一开关管的第二极连接至复位电源。所述第二开关管的栅极连接至第一控制线，所述第二开关管的第一极连接至所述第一节点，所述第二开关管的第二极连接至第二节点。所述第三开关管的栅极连接至所述第一节点，所述第三开关管的第一极连接至第一电源，所述第三开关管的第二极连接至所述第二节点。所述第四开关管的栅极连接至所述第一控制线，所述第四开关管的第一极连接至第三节点，所述第四开关管的第二极连接至数据线。所述第五开关管的栅极连接至第二控制线，所述第五开关管的第一极连接至第一电源，所述第五开关管的第二极连接至所述第三节点。所述第六开关管的栅极连接至第三控制线，所述第六开关管的第一极连接至所述第二节点，所述第六开关管的第二极连接至OLED发光器件的第二电极。存储电容的第一端连 接至所述第三节点，并且所述存储电容的第二端连接至所述第一节点。OLED发光器件的第一电极连接至第二电源。
每个所述驱动电极可对应于一行或者多行OLED发光器件。
每个OLED发光器件可对应于一个驱动电路。
所述感应电极可在所述重置阶段加载固定电压。
所述第一电极层可包括所述发光结构的阴极电极，所述第二电极层可包括所述发光结构的阳极电极。
本发明实施例还提供了一种OLED显示装置，包括上述OLED显示基板。
本发明实施例还提供了一种OLED显示基板的驱动方法，包括：在重置阶段，在所述驱动电极上加载驱动信号，以供所述对应的感应电极根据所述驱动信号在触控发生时感测出感测信号；以及在显示阶段，分别在所述驱动电极和所述对应的感应电极上加载参考电压，以进行画面显示。
所述第二电极层可包括多个第二电极，所述发光层可包括多个发光结构，每个发光结构对应于一个所述第二电极，每个所述第二电极、与该第二电极对应的发光结构以及其对应的第一电极层中的结构形成一个OLED发光器件。
所述OLED显示基板还可包括位于所述衬底基板上的驱动电路，在所述驱动方法中，在重置阶段，所述驱动电路进行重置并在所述驱动电极上加载驱动信号，以供所述对应的感应电极根据所述驱动信号在触控发生时感测出感测信号；在显示阶段，所述驱动电路分别在所述驱动电极和所述对应的感应电极上加载参考电压以使所述驱动电极对应的OLED发光器件进行画面显示。
一行驱动电极进入显示阶段时，该行驱动电极的下一行驱动电极进入重置阶段。
本发明提供的OLED显示基板及其驱动方法和OLED显示装置的技术方案中，第一电极层包括驱动电极和对应的感应电极，且驱动电极和对应的感应电极之间形成互电容，从而将触控技术和OLED显示技术一体化。
附图说明
图1为根据本发明实施例的OLED显示基板的结构示意图。
图2为图1中第一电极层的结构示意图。
图3为图2中一个驱动电极对应的多个OLED发光器件的示意图。
图4为根据本发明实施例的驱动电极的示意图。
图5为根据本发明实施例的驱动电路的电路示意图。
图6为采用图4中驱动电极的驱动电路显示一帧画面的示意图。
图7为图5中驱动电路的时序图。
具体实施方式
为使本领域的技术人员更好地理解本发明的技术方案，下面结合附图对本发明提供的OLED显示基板及其驱动方法和OLED显示装置进行详细描述。
图1为根据本发明实施例的一种OLED显示基板的结构示意图，图2为图1中第一电极层12的结构示意图。如图1和图2所示，该OLED显示基板包括：衬底基板11和位于衬底基板11上方的第一电极层12、发光层13和第二电极层14，发光层13位于第一电极层12和第二电极层14之间。本实施例中，第二电极层14、发光层13和第一电极层11在远离衬底基板11的方向上依次位于衬底基板11上方。第一电极层12包括驱动电极121和对应的感应电极122，驱动电极121和对应的感应电极122之间形成互电容。
本实施例中，发光层13包括：电子传输层(Electron Transport Layer，简称：ETL)131、有机发光层(Emitting Material Layer，简称：EML)132和空穴传输层(Hole Transport Layer；HTL，简称：HTL)133，且有机发光层132位于电子传输层131和空穴传输层133之间。
本实施例中，第一电极层12包括阴极电极，第二电极层14包括阳极电极，反之亦可。相应地，电子传输层131位于第一电极层12和有机发光层132之间，空穴传输层133位于第二电极层14和有机发光层132之间。
第一电极层12中的驱动电极121和感应电极122可按照行列排布的方式设置。如图2所示，可选地，在衬底基板的行方向上驱动电极121和感应电极122交替设置，在衬底基板的列方向上每个驱动电极121所在列中均形成有多个驱动电极121，且每列驱动电极121中的各驱动电极121均与其相邻的一列感应电极122相对应，在衬底基板的行方向上每行驱动电极121中的驱动电极121之间电连接。图2仅示出了5行4列驱动电极121和2列感应电极122。第1行驱动电极121至第5行驱动电极121分别为Tx1、Tx2、Tx3、Tx4、Tx5，其中每行驱动电极121均包含4个驱动电极121，且这4个驱动电极121的名称相同，例如第1行驱动电极121中的4个驱动电极121的名称均为Tx1，以此类推。第1列感应电极122为Rx1，倒数第1列感应电极122为Rx2，第1列感应电极122位于第1列驱动电极121和第2列驱动电极121之间，倒数第1列感应电极122位于倒数第1列驱动电极121和倒数第2列马区动电极121之间。
例如，在衬底基板的列方向上每个感应电极122所在列中可以仅形成有一个感应电极122。换言之，每列感应电极122为一体结构。
第二电极层14包括多个第二电极，发光层13包括多个发光结构，每个发光结构中都包含电子传输层131、有机发光层132和空穴传输层133，且每个发光结构对应于一个第二电极，每个第二电极和与其对应的发光结构以及与该发光结构对应的第一电极层12中的结构形成一个OLED发光器件。
每个驱动电极121可对应于一个或者多个OLED发光器件。本实施例中，每个驱动电极121对应于多个OLED发光器件，图3为图2中一个驱动电极121对应的多个OLED发光器件的示意 图。如图3所示，每个驱动电极121对应于3行9列OLED发光器件。
OLED显示基板还包括：位于衬底基板11上的驱动电路。驱动电路用于在重置阶段进行重置并在驱动电极121上加载驱动信号，以供对应的感应电极122根据所述驱动信号在触控发生时感测出感测信号。驱动电路还用于在显示阶段分别在驱动电极121和对应的感应电极122上加载参考电压以使驱动电极121对应的OLED发光器件显示画面。
图4为根据本发明实施例的驱动电极的示意图。如图4所示，本实施例中，整个OLED显示基板包括12行驱动电极，第1行驱动电极至第12行驱动电极分别为Tx1、Tx2、......、Tx11、Tx12。在实际应用中，还可以根据产品需要设置其它行数的驱动电极。
下面通过一个具体的例子对驱动电路及其驱动过程进行详细描述。
图5为根据本发明实施例的驱动电路的电路示意图。如图5所示，该驱动电路包括第一开关管T1、第二开关管T2、第三开关管T3、第四开关管T4、第五开关管T5、第六开关管T6和存储电容C1。OLED发光器件的第二电极连接至第六开关管T6的第二极，OLED发光器件的第一电极层连接至第二电源。本实施例中，第一电极层包括阴极，第二电极层包括阳极。则OLED发光器件的阳极连接至第六开关管T6的第二极，OLED发光器件的阴极连接至第二电源。
具体地，第一开关管T1的栅极连接至复位信号线Reset，第一开关管T1的第一极连接至第一节点N1，第一开关管T1的第二极连接至复位电源Vinit。第二开关管T2的栅极连接至第一控制线Gate，第二开关管T2的第一极连接至第一节点N1，第二开关管T2的第二极连接至第二节点N2。第三开关管T3的栅极连接至第一节点N1，第三开关管T3的第一极连接至第一电源ELVDD，第三开关管T3的第二极连接至第二节点N2。第四开关管T4的栅极连接至第一控制线Gate，第四开关管T4的第一极连接至第三节 点N3，第四开关管T4的第二极连接至数据线Data。第五开关管T5的栅极连接至第二控制线EM2，第五开关管T5的第一极连接至第一电源ELVDD，第五开关管T5的第二极连接至第三节点N3。第六开关管T6的栅极连接至第三控制线EM1，第六开关管T6的第一极连接至第二节点N2，第六开关管T6的第二极连接至OLED发光器件的阳极。存储电容C1的第一端连接至第三节点N3，存储电容C1的第二端连接至第一节点N1。OLED发光器件的阴极连接至第二电源ELVSS。
图6为采用图4中驱动电极的驱动电路显示一帧画面的示意图，图7为图5中驱动电路的时序图。如图5、图6和图7所示，以第1行驱动电极Tx1为例，第1行驱动电极Tx1对应于多行OLED发光器件，每行OLED发光器件中可含有多个OLED发光器件，每个OLED发光器件对应于一个驱动电路。
第1行驱动电极Tx1对应的多行OLED发光器件首先进入重置阶段。在重置阶段，复位信号线Reset向第一开关管T1的栅极输出第一控制信号以使第一开关管T1开启，该第一控制信号可以为高电平；第一控制线Gate向第二开关管T2的栅极和第四开关管T4的栅极输出第二控制信号以使第二开关管T2和第四开关管T4关闭，该第二控制信号可以为低电平；第二控制线EM2向第五开关管T5的栅极输出第三控制信号以使第五开关管T5关闭，该第三控制信号可以为低电平；第三控制线EM1向第六开关管T6的栅极输出第四控制信号以使第六开关管T6关闭，该第四控制信号可以为低电平。此时，复位电源Vinit通过开启的第一开关管T1向第一节点N1输出复位信号以使第三开关管T3的栅极的电压重置为0V，从而使第三开关管T3关闭。而后，在第1行驱动电极Tx1上加载驱动信号，以供对应的感应电极根据所述驱动信号在触控发生时感测出感测信号。例如，驱动信号方波信号。例如，感应电极在重置阶段加载固定电压。由于在整个重置阶段第三开关管T3关闭，因此第1行驱动电极Tx1所对应的OLED发光器件显示为黑色，从而不会受到加载在第1行驱动电极Tx1 上的驱动信号的影响而显示出不确定的闪烁现象。
第1行驱动电极Tx1对应的多行OLED发光器件在完成重置阶段之后进入显示阶段。本实施例中，显示阶段可包括充电阶段、补偿阶段和发光阶段。第1行驱动电极Tx1对应的各行OLED发光器件依次进入显示阶段。
在充电阶段，复位信号线Reset向第一开关管T1的栅极输出第一控制信号以使第一开关管T1关闭，该第一控制信号可以为低电平；第一控制线Gate向第二开关管T2的栅极和第四开关管T4的栅极输出第二控制信号以使第二开关管T2和第四开关管T4开启，该第二控制信号可以为高电平；第二控制线EM2向第五开关管T5的栅极输出第三控制信号以使第五开关管T5关闭，该第三控制信号可以为低电平；第三控制线EM1向第六开关管T6的栅极输出第四控制信号以使第六开关管T6关闭，该第四控制信号可以为低电平。此时，数据线Data通过开启的第四开关管T4将数据电压Vdata输出至存储电容C1的第一端(即：第三节点N3)，存储电容C1的第二端(即：第一节点N1)的电压由第一端带动升压至Vdata以使第三开关管T3开启，第一电源ELVDD分别通过开启的第三开关管T3和第二开关管T2向存储电容C1的第二端(即：第一节点N1)输出第一电源电压Vdd，由于第一电源电压Vdd经过了第三开关管T3，因此第一节点N1的电压为Vdd-Vth，其中，Vth为第三开关管T3的阈值电压。
在补偿阶段，复位信号线Reset向第一开关管T1的栅极输出第一控制信号以使第一开关管T1关闭，该第一控制信号可以为低电平；第一控制线Gate向第二开关管T2的栅极和第四开关管T4的栅极输出第二控制信号以使第二开关管T2和第四开关管T4关闭，该第二控制信号可以为低电平；第二控制线EM2向第五开关管T5的栅极输出第三控制信号以使第五开关管T5开启，该第三控制信号可以为高电平；第三控制线EM1向第六开关管T6的栅极输出第四控制信号以使第六开关管T6关闭，该第四控制信号可以为低电平。此时，第一电源ELVDD通过开启的第五开关管T5 向存储电容C1的第一端(即：第三节点N3)输出第一电源电压Vdd，存储电容C1的第一端(即：第三节点N3)的电压突变为Vdd，由于存储电容C1两端的压差不变，因此存储电容C1的第二端(即：第一节点N1)的电压突变为2Vdd-Vdata-Vth。
在发光阶段，复位信号线Reset向第一开关管T1的栅极输出第一控制信号以使第一开关管T1关闭，该第一控制信号可以为低电平；第一控制线Gate向第二开关管T2的栅极和第四开关管T4的栅极输出第二控制信号以使第二开关管T2和第四开关管T4关闭，该第二控制信号可以为低电平；第二控制线EM2向第五开关管T5的栅极输出第三控制信号以使第五开关管T5关闭，该第三控制信号可以为低电平；第三控制线EM1向第六开关管T6的栅极输出第四控制信号以使第六开关管T6开启，该第四控制信号可以为高电平。由于存储电容C1的第二端(即：第一节点N1)的电压为2Vdd-Vdata-Vth，因此第三开关管T3开启。又由于第六开关管T6开启，因此OLED发光器件发光。此时，流经OLED发光器件的电流为：
Figure PCTCN2016073984-appb-000001
其中，K为工艺参数，VGS为第三开关管T3的栅源电压。上述公式中消除了开关管的阈值电压Vth，因此流经OLED发光器件的电流不受开关管的阈值电压Vth的影响，从而使得OLED发光器件的发光稳定。
在上述充电阶段、补偿阶段和发光阶段，第二电源ELVSS向第1行驱动电极Tx1对应的第1行OLED发光器件的阴极(即：对应的驱动电极和感应电极)上加载参考电压Vss，以进行画面显示。
重复执行上述充电、补偿和发光过程，使得第1行驱动电极Tx1对应的各行OLED发光器件依次完成显示，而后第2行驱动电极Tx2进入重置阶段以实现触控操作，接着进入显示阶段以进行画面显示，以此类推。
例如，如图6所示，在第1行驱动电极Tx1对应的各行OLED 发光器件进入重置阶段时，驱动电极Tx12对应的各行OLED发光器件进入显示阶段；在驱动电极Tx2对应的各行OLED发光器件进入重置阶段时，驱动电极Tx1对应的各行OLED发光器件进入显示阶段，以此类推。也即，在一帧画面显示时，一行驱动电极进入显示阶段时，该行驱动电极的下一行驱动电极进入重置阶段。采用上述方案可在触控(发生在重置阶段)、显示(发生在显示阶段)过程中更好的利用时间，降低了触控操作对画面显示造成的影响。
本实施例提供的OLED显示基板的技术方案中，第一电极层包括驱动电极和对应的感应电极，且驱动电极和对应的感应电极之间形成互电容，从而将触控技术和OLED显示技术一体化。在重置阶段进行触控操作，在显示阶段进行画面显示，降低了触控操作对画面显示的影响。而且，由于一行驱动电极进入显示阶段时，该行驱动电极的下一行驱动电极进入重置阶段，故无需对下一行驱动电极的重置阶段的触控操作和上一行驱动电极的显示阶段的画面显示进行分时操作，实现了同时进行触控操作和画面显示。本实施例中在重置阶段进行触控操作，在触控操作过程中没有充放电过程，从而消除了触控寄生电容的影响，实现了优质的触控效果。
本发明实施例还提供了一种OLED显示装置，该OLED显示装置包括：OLED显示基板，该OLED显示基板可采用上述实施例一中的OLED显示基板，此处不再赘述。
本实施例提供的OLED显示装置的技术方案中，第一电极层包括驱动电极和对应的感应电极，且驱动电极和对应的感应电极之间形成互电容，从而将触控技术和OLED显示技术一体化。在重置阶段进行触控操作，在显示阶段进行画面显示，降低了触控操作对画面显示的影响。而且，由于一行驱动电极进入显示阶段时，该行驱动电极的下一行驱动电极进入重置阶段，故无需对下一行驱动电极的重置阶段的触控操作和上一行驱动电极的显示阶段的画面显示进行分时操作，实现了同时进行触控操作和画面显 示。本实施例中在重置阶段进行触控操作，在触控操作过程中没有充放电过程，从而消除了触控寄生电容的影响，实现了优质的触控效果。
本发明实施例还提供了一种OLED显示基板的驱动方法，该OLED显示基板包括衬底基板和位于衬底基板上方的第一电极层、发光层和第二电极层，发光层位于第一电极层和第二电极层之间。本实施例中，第二电极层、发光层和第一电极层在远离衬底基板的方向上依次位于衬底基板上方，第一电极层包括驱动电极和对应的感应电极，驱动电极和对应的感应电极之间形成互电容，该方法包括：在重置阶段，在所述驱动电极上加载驱动信号，以供所述对应的感应电极根据所述驱动信号在触控发生时感测出感测信号；在显示阶段，分别在所述驱动电极和对应的感应电极上加载参考电压，以进行画面显示。
例如，所述第二电极层包括多个第二电极，所述发光层包括多个发光结构，每个发光结构对应于一个所述第二电极，每个所述第二电极、其对应的发光结构以及其对应的第一电极层中的结构形成一个OLED发光器件。所述OLED显示基板还包括位于所述衬底基板上的驱动电路。在重置阶段，所述驱动电路进行重置并在所述驱动电极上加载驱动信号，以供所述对应的感应电极根据所述驱动信号在触控发生时感测出感测信号。在显示阶段，所述驱动电路分别在所述驱动电极和所述对应的感应电极上加载参考电压以使所述驱动电极对应的OLED发光器件进行画面显示。
例如，一行驱动电极进入显示阶段时，该行驱动电极的下一行驱动电极进入重置阶段。
本实施例提供的OLED显示基板的驱动方法可用于对本发明实施例的OLED显示基板进行驱动，因此对OLED显示基板的具体描述可参见前述描述，此处不再赘述。
本实施例提供的OLED显示基板的驱动方法的技术方案中，第一电极层包括驱动电极和对应的感应电极，且驱动电极和对应的感应电极之间形成互电容，从而将触控技术和OLED显示技术 一体化。在重置阶段进行触控操作，在显示阶段进行画面显示，降低了触控操作对画面显示的影响。而且，由于一行驱动电极进入显示阶段时，该行驱动电极的下一行驱动电极进入重置阶段，故无需对下一行驱动电极的重置阶段的触控操作和上一行驱动电极的显示阶段的画面显示进行分时操作，实现了同时进行触控操作和画面显示。本实施例中在重置阶段进行触控操作，在触控操作过程中没有充放电过程，从而消除了触控寄生电容的影响，实现了优质的触控效果。
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 (15)

  1. 一种OLED显示基板，包括衬底基板和位于所述衬底基板上方的第一电极层、发光层和第二电极层，所述发光层位于第一电极层和第二电极层之间，其中
    所述第一电极层包括驱动电极和对应的感应电极，且所述驱动电极和所述对应的感应电极之间形成互电容。
  2. 根据权利要求1所述的OLED显示基板，其中，在所述衬底基板的行方向上所述驱动电极和所述感应电极交替设置，在所述衬底基板的列方向上每个驱动电极所在列中均形成有多个所述驱动电极，且每列驱动电极中的各驱动电极均与其相邻的一列感应电极相对应，在所述衬底基板的行方向上每行驱动电极中的所述驱动电极之间电连接。
  3. 根据权利要求2所述的OLED显示基板，其中，在所述衬底基板的列方向上每个感应电极所在列中只形成有一个所述感应电极。
  4. 根据权利要求1所述的OLED显示基板，其中，所述第二电极层包括多个第二电极，所述发光层包括多个发光结构，每个发光结构对应于一个所述第二电极，每个所述第二电极、与所述第二电极对应的发光结构以及与该发光结构对应的第一电极层中的结构形成一个OLED发光器件。
  5. 根据权利要求1所述的OLED显示基板，还包括：位于所述衬底基板上的驱动电路；
    所述驱动电路用于在重置阶段进行重置并在所述驱动电极上加载驱动信号，以供所述对应的感应电极根据所述驱动信号在触控发生时感测出感测信号；
    所述驱动电路用于在显示阶段分别在所述驱动电极和所述对应的感应电极上加载参考电压以使所述驱动电极对应的OLED发光器件进行画面显示。
  6. 根据权利要求5所述的OLED显示基板，其中，所述驱动电路包括第一开关管、第二开关管、第三开关管、第四开关管、第五开关管、第六开关管和存储电容；
    所述第一开关管的栅极连接至复位信号线，所述第一开关管的第一极连接至第一节点，所述第一开关管的第二极连接至复位电源；
    所述第二开关管的栅极连接至第一控制线，所述第二开关管的第一极连接至所述第一节点，所述第二开关管的第二极连接至第二节点；
    所述第三开关管的栅极连接至所述第一节点，所述第三开关管的第一极连接至第一电源，所述第三开关管的第二极连接至所述第二节点；
    所述第四开关管的栅极连接至所述第一控制线，所述第四开关管的第一极连接至第三节点，所述第四开关管的第二极连接至数据线；
    所述第五开关管的栅极连接至第二控制线，所述第五开关管的第一极连接至第一电源，所述第五开关管的第二极连接至所述第三节点；
    所述第六开关管的栅极连接至第三控制线，所述第六开关管的第一极连接至所述第二节点，所述第六开关管的第二极连接至OLED发光器件的第二电极；
    存储电容的第一端连接至所述第三节点，所述存储电容的第二端连接至所述第一节点；
    OLED发光器件的第一电极连接至第二电源。
  7. 根据权利要求4所述的OLED显示基板，其中，每个所述 驱动电极对应于一行或者多行OLED发光器件。
  8. 根据权利要求5所述的OLED显示基板，其中，每个OLED发光器件对应于一个驱动电路。
  9. 根据权利要求5所述的OLED显示基板，其中，所述感应电极在所述重置阶段加载固定电压。
  10. 根据权利要求1至9中任一项所述的OLED显示基板，其中，所述第一电极层包括阴极电极，所述第二电极层包括阳极电极。
  11. 一种OLED显示装置，包括权利要求1至10中任一项所述的OLED显示基板。
  12. 一种权利要求1所述的OLED显示基板的驱动方法，包括：
    在重置阶段，在所述驱动电极上加载驱动信号，以供所述对应的感应电极根据所述驱动信号在触控发生时感测出感测信号；以及
    在显示阶段，分别在所述驱动电极和所述对应的感应电极上加载参考电压，以进行画面显示。
  13. 根据权利要求12所述的OLED显示基板的驱动方法，其中，所述第二电极层包括多个第二电极，所述发光层包括多个发光结构，每个发光结构对应于一个所述第二电极，每个所述第二电极、与该第二电极对应的发光结构以及与该发光结构对应的第一电极层中的结构形成一个OLED发光器件。
  14. 根据权利要求12所述的OLED显示基板的驱动方法，其 中，所述OLED显示基板还包括位于所述衬底基板上的驱动电路；
    在重置阶段，所述驱动电路进行重置并在所述驱动电极上加载驱动信号，以供所述对应的感应电极根据所述驱动信号在触控发生时感测出感测信号；
    在显示阶段，所述驱动电路分别在所述驱动电极和所述对应的感应电极上加载参考电压以使所述驱动电极对应的OLED发光器件进行画面显示。
  15. 根据权利要求14所述的OLED显示基板的驱动方法，其中，一行驱动电极进入显示阶段时，该行驱动电极的下一行驱动电极进入重置阶段。
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