WO2014205939A1 - Amoled像素电路及其驱动方法、显示装置 - Google Patents

Amoled像素电路及其驱动方法、显示装置 Download PDF

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Publication number
WO2014205939A1
WO2014205939A1 PCT/CN2013/084465 CN2013084465W WO2014205939A1 WO 2014205939 A1 WO2014205939 A1 WO 2014205939A1 CN 2013084465 W CN2013084465 W CN 2013084465W WO 2014205939 A1 WO2014205939 A1 WO 2014205939A1
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WIPO (PCT)
Prior art keywords
transistor
module
touch
signal
electrode
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PCT/CN2013/084465
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English (en)
French (fr)
Inventor
谭文
祁小敬
聂磊森
Original Assignee
京东方科技集团股份有限公司
成都京东方光电科技有限公司
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Application filed by 京东方科技集团股份有限公司, 成都京东方光电科技有限公司 filed Critical 京东方科技集团股份有限公司
Priority to US14/344,437 priority Critical patent/US9317153B2/en
Publication of WO2014205939A1 publication Critical patent/WO2014205939A1/zh

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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
    • G06F3/0412—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
    • G—PHYSICS
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    • 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
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    • 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
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    • 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
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    • 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
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    • 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
    • G09G3/3258—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 voltage across the light-emitting element
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    • 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]
    • G09G3/3275—Details of drivers for data electrodes
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Definitions

  • the present invention relates to the field of display technologies, and in particular, to an AMOLED pixel circuit, a driving method thereof, and a display device. Background technique
  • the existing display device with touch function can be divided into two types: an on-cell touch panel and an in-cell touch panel.
  • the in-cell touch panel has a thinner thickness and a higher light transmittance than a surface touch panel.
  • an organic light emitting diode is used as a current type light emitting device because of its self-luminous, fast response, wide viewing angle, and can be fabricated on a flexible substrate. More and more features are increasingly used in high-performance display.
  • the OLED display device can be classified into two types: PMOLED (Passive Matrix Driving OLED) and AMOLED (Active Matrix Driving OLED), which are low in AMOLED display. Manufacturing cost, high response speed, power saving, DC drive for portable devices, large operating temperature range, etc. are expected to become the next generation of new flat panel displays that replace LCD (liquid crystal display). Therefore, AMOLED display panels with in-cell touch functions have been favored by more and more people.
  • each OLED relies on a driving circuit composed of a plurality of TFT (Thin Film Transistor) switches in one pixel unit on the array substrate to drive light to realize display.
  • the touch screen panel (TSP) is a sensor and a driving circuit for the touch, which are also fabricated in each pixel unit on the array substrate by an array process. If the sensor and the driving circuit of the TSP are superimposed on the AMOLED pixel, a certain number of driving circuit TFTs need to be added, so that an additional space of a certain pixel unit is required, and the pixel unit has a limited space, which is extremely The earth limits the simultaneous fabrication of the in-cell touch panel circuit and the AMOLED driver circuit. Summary of the invention
  • Embodiments of the present invention provide an AMOLED pixel circuit, a driving method thereof, and a display device, which can improve the integration degree of the in-cell touch circuit and the AMOLED driving circuit.
  • An aspect of the present invention provides an AMOLED pixel circuit, including: a light emitting module, a touch module, a control module, an output module, and a driving amplification module;
  • the illuminating module is respectively connected to the control module and the first voltage end for performing illuminating display under the control of the control module;
  • the touch module is respectively connected to the control module, the fourth signal line and the second voltage end for receiving the input touch signal;
  • the control module is further configured to connect the first signal line, the second signal line, the third signal line, and the data line, and is configured to control the light emitting module and the touch module according to an input signal of the signal line, where the a signal of a signal line is a signal after the signal of the fourth signal line is delayed by a predetermined time;
  • the output module is respectively connected to the fifth signal line, the control module and the data line, and is configured to output a touch signal to the data line, where the signal of the second signal line is the fifth signal
  • the signal of the line is delayed by a signal after a predetermined time
  • the driving amplification module is connected to the touch module, the control module, and the second voltage terminal, respectively, for driving the light emitting module or amplifying the touch signal received by the touch module.
  • the light emitting module includes: a light emitting device, one end of the light emitting device is connected to the control module, and the other end of the light emitting device is connected to the first voltage end.
  • control module includes:
  • a gate of the first transistor is connected to the first signal line, and a first electrode thereof is connected to the light emitting device;
  • a gate of the second transistor is connected to the second signal line, and a second electrode is connected to the data line;
  • a gate of the third transistor is connected to the first signal line, a first pole thereof is connected to a second pole of the first transistor, and a second pole is connected to a first pole of the second transistor Extremely
  • the fourth transistor has a gate connected to the third signal line and a first electrode connected to the second electrode of the first transistor.
  • the output module includes:
  • a fifth transistor a gate of the fifth transistor connected to the fifth signal line, a first electrode connected to the second electrode of the first transistor, and a second electrode connected to the data line.
  • the driving amplification module includes:
  • a gate of the sixth transistor is connected to a second electrode of the fourth transistor, a first pole is connected to the second voltage end, and a second pole is connected to a second pole of the first transistor;
  • a storage capacitor one end of the storage capacitor is connected to the first pole of the second transistor, and the other end is connected to the second pole of the fourth transistor.
  • the touch module includes:
  • a gate of the seventh transistor is connected to the fourth signal line, a first pole is connected to the first pole of the second transistor, and a second pole is connected to the second voltage end;
  • An eighth transistor a gate of the eighth transistor is connected to the fourth signal line, and a second electrode is connected to the second voltage terminal;
  • an anode of the photodiode is connected to a first pole of the eighth transistor, and a cathode thereof is connected to a second pole of the fourth transistor.
  • touch module includes:
  • a gate of the seventh transistor is connected to the fourth signal line, a first pole is connected to the first pole of the second transistor, and a second pole is connected to the second voltage end;
  • An eighth transistor a gate of the eighth transistor is connected to the fourth signal line, and a first electrode thereof is connected to a second electrode of the fourth transistor;
  • sensing electrode wherein the sensing electrode is connected to the second pole of the eighth transistor.
  • the first transistor, the second transistor, the third transistor, the fourth transistor, the fifth transistor, and the sixth transistor are N-type transistors, and the seventh transistor And the eighth transistor is a P-type transistor; or
  • the first transistor, the second transistor, the third transistor, the fourth transistor, the fifth transistor, and the sixth transistor are P-type transistors, and the seventh transistor and the eighth The transistor is an N-type transistor.
  • a display device comprising the AMOLED pixel circuit of any of the above.
  • an AM0 LED pixel circuit driving method including:
  • the data line inputs an initialization signal
  • the control module initializes the touch module and drives the amplification module according to the initialization signal
  • the touch module receives a touch signal
  • the driving amplification module amplifies and outputs the touch signal to the data line through an output module
  • the data line inputs an initialization signal, and the initialization signal precharges the driving amplification module;
  • the method specifically includes:
  • Initialization phase the first transistor is turned off, the second transistor is turned off, the seventh transistor and the eighth transistor are turned on, the touch module is connected to the gate of the sixth transistor, and the storage capacitor is used as the storage of the sixth transistor Capacitor, the third transistor is turned off, the fourth transistor is turned on, the fifth transistor is turned on, the data line is input with an initialization signal, and the storage capacitor is precharged with the initialization signal;
  • a touch phase the third transistor and the fourth transistor are turned off, the seventh transistor and the eighth transistor are turned on, and the touch module receives the touch signal;
  • the fifth transistor is turned on, and the sixth transistor amplifies and outputs its gate voltage to the data line through an output module;
  • Charging phase the third transistor is turned off, the second transistor, the fourth transistor, the fifth transistor, the seventh transistor, and the eighth transistor are turned on, and the data line input initialization signal causes the storage capacitor to be charged;
  • a writing phase the third transistor, the fourth transistor, the fifth transistor, the seventh transistor, and the eighth transistor are turned off, the second transistor is turned on, and the data line is input gray scale a voltage, the storage capacitor is discharged to an off state by the sixth transistor;
  • the illuminating phase the second transistor, the fourth transistor and the fifth transistor are turned off, the first transistor and the third transistor are turned on, and the sixth transistor drives the illuminating device to realize illuminating display.
  • the receiving the touch signal by the touch module includes:
  • the touch module determines to receive the touch signal according to the amount of light received by the photodiode.
  • the touch module determines to receive the touch signal according to the value of the sensing capacitance formed between the sensing electrode and the touch end of the user.
  • the first transistor, the second transistor, the third transistor, the fourth transistor, the fifth transistor, and the sixth transistor are N-type transistors, and the seventh transistor And the eighth transistor is a P-type transistor; or
  • the first transistor, the second transistor, the third transistor, the fourth transistor, the fifth transistor, and the sixth transistor are P-type transistors, and the seventh transistor and the eighth The transistor is an N-type transistor.
  • the AMOLED pixel circuit, the driving method thereof and the display device provided by the embodiments of the present invention integrate the in-cell touch circuit in the AMOLED pixel circuit, so that the light emitting module and the touch control module share the control module and the driving amplification module.
  • the in-cell touch circuit and the AMOLED pixel circuit are time-divisionally driven by adjusting the timing of the signal, thereby greatly improving the in-cell touch circuit and the AMOLED driving circuit.
  • the integration degree realizes the simultaneous production of the in-cell touch panel circuit and the AMOLED driving circuit in a limited pixel unit space, which significantly improves the quality of the product and reduces the production difficulty of the product.
  • FIG. 1 is a schematic structural diagram of an AMOLED pixel circuit according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram of a circuit structure of an AMOLED pixel circuit according to an embodiment of the present invention
  • FIG. 3 is another AMOLED pixel according to an embodiment of the present invention. Schematic diagram of the circuit structure of the circuit; as well as
  • FIG. 4 is a schematic diagram of signal waveforms for driving an AMOLED pixel circuit as shown in FIG. detailed description
  • the transistors used in all the embodiments of the present invention may be thin film transistors or field effect transistors or other devices having the same characteristics. Since the sources and drains of the transistors used herein are symmetrical, the source and the drain are indistinguishable. of. In the embodiment of the present invention, in order to distinguish the two poles except the gate of the transistor, one of the poles is referred to as a source and the other pole is referred to as a drain. In addition, according to the characteristics of the transistor, the transistor can be divided into an N-type transistor or a P-type transistor. In the embodiment of the invention, when the N-type transistor is used, the first pole can be the source, and the second pole can be the drain. When a P-type transistor is used, its first pole can be the drain and the second pole can be the source.
  • the AMOLED pixel circuit provided by the embodiment of the present invention includes: a light emitting module 1 1 , a touch module 12 , a control module 13 , an output module 14 , and a driving amplification module 15 .
  • the illumination module 1 1 is respectively connected to the control module 13 and the first voltage terminal VI for performing illumination display under the control of the control module 13.
  • the touch module 12 is respectively connected to the control module 13, the fourth signal line S l_n-1 and the second voltage terminal V2 for receiving the input touch signal.
  • the control module 13 is further connected to the first signal line S l_n, the second signal line S2_n, the third signal line S3_n, and the data line DATA for controlling the light emitting module 1 1 and the touch module 12 according to the input signal of the signal line,
  • the signal of the first signal line is a signal after the signal of the fourth signal line is delayed by a predetermined time.
  • the output module 14 is connected to the fifth signal line S2_n-1, the control module 13 and the data line DATA, respectively, for outputting a touch signal to the data line DATA, and the signal of the second signal line is a signal of the fifth signal line Delay the signal after the predetermined time.
  • the voltage terminal V2 is used to drive the light emitting module 11 or to amplify the touch signal received by the touch module 12.
  • the first signal line S l_n and the fourth signal line S l_n-1 are illustrated as S 1 together, and the second signal line S2_n and the fifth signal line S2_n-1 are taken as a picture. Shown as S2.
  • the AMOLED pixel circuit provided by the embodiment of the invention integrates the embedded touch circuit in the AMOLED pixel circuit, so that the light-emitting module and the touch module share the control module and the drive amplification module.
  • the in-cell touch circuit and the AMOLED pixel circuit are time-divisionally driven by adjusting the timing of the signal, thereby greatly improving the in-cell touch circuit and the AMOLED driving circuit.
  • the integration degree realizes the simultaneous production of the in-cell touch panel circuit and the AMOLED driving circuit in a limited pixel unit space, which significantly improves the quality of the product and reduces the production difficulty of the product.
  • the first voltage terminal VI can input a high level VDD, and the second voltage terminal V2 can input a low level VSS.
  • the light emitting module 1 1 and the touch module 12 in the AMOLED pixel circuit share a data line DATA, and the data line DATA is mainly used to divide the time to the
  • the illumination control signal is input or the touch signal is read in the AMOLED pixel circuit.
  • the light emitting module 11 may include: a light emitting device D1.
  • One end of the light emitting device D1 is connected to the control module 13 and the other end thereof is connected to the first voltage end.
  • the light emitting device D1 may be included in the prior art including LED (Light)
  • Emitting Diodes Light Emitting Diodes (OLEDs) or OLEDs (Organic Light Emitting Diodes) are used to drive light-emitting devices.
  • OLEDs Light Emitting Diodes
  • OLEDs Organic Light Emitting Diodes
  • an OLED is taken as an example for description.
  • control module 13 may include: a first transistor T1, a second transistor ⁇ 2, a third transistor ⁇ 3, and a fourth transistor ⁇ 4.
  • the gate of the first transistor T1 is connected to the first signal line S l_n , and the first pole thereof is connected to the light emitting device D1.
  • the gate of the second transistor T2 is connected to the second signal line S2_n, and the second electrode thereof is connected to the data line DATA.
  • the gate of the third transistor T3 is connected to the first signal line S l_n , the first pole of which is connected to the second pole of the first transistor T1 , and the second pole of which is connected to the first pole of the second transistor T2 .
  • the gate of the fourth transistor T4 is connected to the third signal line S3_n, and the first pole thereof is connected to the second pole of the first transistor T1.
  • the output module 14 may include: a fifth transistor T5.
  • the fifth transistor ⁇ 5 has a gate connected to the fifth signal line S2_n-1, a first electrode connected to the second electrode of the first transistor T1, and a second electrode connected to the data line DATA.
  • the driving amplification module 15 may include: a sixth transistor T6, and a storage capacitor Cl.
  • the gate of the sixth transistor T6 is connected to the second electrode of the fourth transistor T4, the first electrode thereof is connected to the second voltage terminal V2, and the second electrode thereof is connected to the second electrode of the first transistor T1.
  • the storage capacitor C1 has one end connected to the first pole of the second transistor T2 and the other end connected to the second pole of the fourth transistor T4.
  • the touch module 12 can include: a seventh transistor T7, an eighth transistor ⁇ 8, and a photodiode D2.
  • the gate of the seventh transistor T7 is connected to the fourth signal line Sl_n-1, the first pole of which is connected to the first pole of the second transistor T2, and the second pole of which is connected to the second voltage terminal V2.
  • the gate of the eighth transistor T8 is connected to the fourth signal line Sl_n-1, and the second terminal thereof is connected to the second voltage terminal V2.
  • the anode of the photodiode D2 is connected to the first pole of the eighth transistor T8, and the cathode thereof is connected to the second pole of the fourth transistor T4.
  • the touch module 12 of such a structure when the user performs a touch operation, the amount of light received by the photodiode D2 will change due to the influence of the shading caused by the user during the touch, and the photodiode D2 is Different leakage currents will produce different leakage currents. By examining the difference in leakage current of the photodiode D2 in different pixel areas of the display panel, the detection of the touch position can be accurately realized.
  • the touch module 12 in the AMOLED pixel circuit provided by the embodiment of the present invention is not limited to the photosensitive touch module, and other various known touch circuit structures can also be applied to the present invention.
  • the structure of the touch module 12 may further include: a seventh transistor T7, an eighth transistor ⁇ 8, and a sensing electrode.
  • the gate of the seventh transistor ⁇ 7 is connected to the fourth signal line Sl_n-1, the first pole of which is connected to the first pole of the second transistor T2, and the second pole of which is connected to the second voltage terminal V2.
  • the gate of the eighth transistor T8 is connected to the fourth signal line S_n-1, and the first pole is connected to the fourth The second pole of transistor T4.
  • the sensing electrode is connected to the second pole of the eighth transistor ⁇ 8.
  • a sensing capacitor C2 is formed between the user's finger or other touch device and the sensing electrode, and the position of the sensing capacitor can also be accurately measured.
  • the touch module 12 of the above two structures can also be selected or replaced according to actual needs.
  • the first transistor T1, the second transistor T2, the third transistor T3, the fourth transistor T4, the fifth transistor T5, and the sixth transistor T6 may be used.
  • the type transistor, the seventh transistor ⁇ 7 and the eighth transistor ⁇ 8 may employ a ⁇ -type transistor.
  • the first transistor T1, the second transistor ⁇ 2, the third transistor ⁇ 3, the fourth transistor ⁇ 4, the fifth transistor ⁇ 5, and the sixth transistor ⁇ 6 may employ a ⁇ -type transistor, and the seventh transistor ⁇ 7 and the eighth transistor ⁇ 8 may adopt a ⁇ type Transistor.
  • the first transistor T1, the second transistor ⁇ 2, the third transistor ⁇ 3, the fourth transistor ⁇ 4, the fifth transistor ⁇ 5, and the sixth transistor ⁇ 6 are ⁇ -type transistors
  • the transistor ⁇ 8 is exemplified by a ⁇ -type transistor. It is conceivable that when the type of the above transistor is changed, the same driving effect can be achieved by correspondingly changing the potential level of the control signal.
  • the in-cell touch circuit and the AMOLED pixel circuit can be time-divisionally driven by adjusting the timing of the signal without increasing the driving signal, thereby greatly
  • the integration degree of the in-cell touch circuit and the AMOLED driving circuit is improved, and the in-cell touch panel circuit and the AMOLED driving circuit are simultaneously fabricated in a limited pixel unit space, thereby significantly improving the quality of the product and reducing the product.
  • the difficulty of production is
  • Embodiments of the present invention also provide a display device including an organic light emitting display, other displays, and the like.
  • the display device includes any of the AMOLED pixel circuits as described above.
  • the display device can include an array of a plurality of AMOLED pixel cells, each of the AMOLED pixel cells including any one of the AMOLED pixel circuits described above.
  • the same advantages as the pixel circuit provided by the foregoing embodiments of the present invention are provided. Since the pixel circuit has been described in detail in the foregoing embodiments, details are not described herein again.
  • the display device provided by the embodiment of the present invention may be a display device having a current-driven light-emitting device including an LED display or an OLED display.
  • the display device provided by the embodiment of the invention includes an AMOLED pixel circuit.
  • the light emitting module and the touch module share a control module and a driving amplification module.
  • the in-cell touch circuit and the AMOLED pixel circuit are time-divisionally driven by adjusting the timing of the signal, thereby greatly improving the in-cell touch circuit and the AMOLED driving circuit.
  • the integration degree realizes the simultaneous production of the in-cell touch panel circuit and the AMOLED driving circuit in a limited pixel unit space, which significantly improves the quality of the product and reduces the production difficulty of the product.
  • the AMOLED pixel circuit driving method provided by the embodiment of the present invention can be applied to various AMOLED pixel circuits provided in the foregoing embodiments, including:
  • the control module initializes the touch module and drives the amplification module according to the initialization signal.
  • the touch module receives the touch signal.
  • the driving amplification module amplifies and outputs the touch signal to the data line through the output module.
  • the data line inputs an initialization signal, and the initialization signal drives the amplification module to be pre-charged;
  • the embedded touch circuit is integrated in the AMOLED pixel circuit, so that the light-emitting module and the touch module share a control module and a drive amplification module.
  • the in-cell touch circuit and the AMOLED pixel circuit are time-divisionally driven by adjusting the timing of the signal, thereby greatly improving the in-cell touch circuit and the AMOLED driving circuit.
  • the integration degree realizes the simultaneous production of the in-cell touch panel circuit and the AMOLED driving circuit in a limited pixel unit space, which significantly improves the quality of the product and reduces the production difficulty of the product.
  • the AMOLED pixel circuit driving method provided by the embodiment of the present invention is described in detail below by taking the AMOLED pixel circuit shown in FIG. 2 as an example.
  • the timing waveform of each data signal line used to drive the AMOLED pixel circuit can be as shown in FIG. 4 . Show. It should be noted that, in the embodiment of the present invention, the gates of the first transistor T1 and the third transistor T3 are connected to the first letter.
  • the gates of the seventh transistor T7 and the eighth transistor T8 are connected to the fourth signal line S1_n-1, wherein the waveform of the signal S1_n-1 is delayed by the waveform of the signal S1_n; the gate of the second transistor T2 Connecting the second signal line S2_n, the gate of the fifth transistor T5 is connected to the second signal line S2_n-1, wherein the waveform of the signal S2_n-1 is delayed by the waveform of the signal S2_n; the gate of the fourth transistor T4 is connected.
  • the three signal lines S3 are input signals S3_n.
  • a first transistor T1, a second transistor T2, a third transistor T3, a fourth transistor T4, a fifth transistor T5, and a sixth transistor T6 are used, and a seventh transistor is used.
  • the transistor ⁇ 7 and the eighth transistor ⁇ 8 are exemplified by a ⁇ -type transistor. It is conceivable that when the type of the above transistor is changed, the same driving effect can be achieved by correspondingly changing the potential level of the control signal.
  • the method of driving the AMOLED pixel circuit may specifically include: (PHOTO), a read phase (READ), a charge phase (CHARGE), a write phase (WRITE), and an illuminating phase (OLED).
  • Initialization phase In this phase, signals Sl_n, S2_n and Sl_n-1 are both low, and signals 83_11 and S2_n-1 are high.
  • the first transistor T1 is turned off to turn off the light emitting device
  • the second transistor T2 is turned off
  • the seventh transistor T7 and the eighth transistor T8 are turned on
  • the touch module 12 is connected to the gate of the sixth transistor T6, and the storage capacitor C1 is used as The storage capacitor of the sixth transistor T6;
  • the third transistor T3 is turned off, the fourth transistor T4 is turned on, the fifth transistor T5 is turned on, the data line DATA is input to the initialization signal VINI, and the storage capacitor C1 is precharged with the initialization signal VINI.
  • the storage capacitor C1 can be precharged to the initialization signal VINI, thereby ensuring that the transistor T6 operates in a saturated state in the next stage.
  • Touch phase At this stage, signals Sl_n, S2_n, S3_n and Sl_n-1 are both low and signal S2_n-1 is high. At this time, the third transistor T3 and the fourth transistor T4 are turned off, the seventh transistor T7 and the eighth transistor T8 are turned on, and the touch module 12 receives the touch control signal.
  • the structure of the touch module 12 is as shown in FIG. 2, and the touch module 12 includes a photodiode D2.
  • the touch module 12 of such a structure is used when the user performs a touch operation.
  • the amount of light received by the photodiode D2 will change due to the influence of the shading caused by the user during the touch.
  • the photodiode D2 will generate different leakage currents according to the amount of received light, and the different pixels of the display panel are examined. The difference in leakage current of the photodiode D2 in the region can accurately detect the touch position.
  • the touch module 12 in the AMOLED pixel circuit is not limited to the photosensitive touch module, and other various known touch circuit structures can also be applied to the present invention.
  • the structure of the touch module 12 can also be as shown in FIG. 3, the touch module 12 includes a sensing electrode, and the touch module 12 of the structure is used when the user performs a touch operation, on the user's finger or the like.
  • a sensing capacitor C2 is formed between the touch device and the sensing electrode, and the position of the sensing capacitor can be measured to accurately detect the touch position.
  • the touch module 12 of the above two structures can also be selected or replaced according to actual needs.
  • the touch control stage can be described in detail by taking a photosensitive touch module as an example.
  • the photodiode D2 detects the touch state of the display panel.
  • the external light source cannot be irradiated to the photodiode D2, and the amount of light received by D2 is small, and the photoinduced leakage current at this time is small, and the voltage of the storage capacitor C1 in the PHOTO phase is generated due to leakage.
  • the level change is also small; when the display panel is not touched, the external light source can be irradiated to the photodiode D2, then the amount of light received by D2 is large, and a large photo-induced leakage current is generated, and the voltage of the capacitor C1 is stored in the PHOTO stage. Because leakage causes a large level change. Therefore, if touched, the gate voltage of the amplifying transistor T6 changes little with respect to the initial voltage; if not touched, the gate voltage of the amplifying transistor T6 becomes larger than the initial voltage by 4t.
  • Read phase In this phase, signals Sl_n, S2_n, S3_n, and Sl_n-1 are both low, and signal S2_n-1 is high.
  • the fifth transistor T5 is turned on, and the voltage of the storage capacitor C1 of the gate of the sixth transistor T6 is no longer changed by the leakage, and the result of the previous stage is stored on the storage capacitor C1.
  • the sixth transistor T6 amplifies and outputs its gate voltage to the data line DATA.
  • the data line DATA is used as the readout line of the touch result output voltage, and the amplifying transistor T6 amplifies the gate voltage thereof to the data line DATA, thereby outputting the touch result to the touch provided on the periphery of the display panel.
  • Control signal reading circuit The above three stages are the working process of the touch function circuit, and the touch function is realized by detecting the touch signal and reading.
  • the data line DATA is now the AMOLED gray scale voltage input V DATA , then the storage capacitor C1 terminal is changed from VSS to V DATA .
  • the gate level of the sixth transistor T6 becomes VDATA + V ⁇ - V SS . Since the transistors T4, ⁇ 5, ⁇ 7, and ⁇ 8 are turned off, the storage capacitor CI voltage is discharged to the off state through the sixth transistor T6. Results, T6 level of the gate of the sixth transistor is V THT1, stored across the capacitor C1 1 3 ⁇ 4 pressure VDATA ⁇ VTHTI.
  • Illumination phase At this stage, signals S2_n, S3_n and S2_n-1 are low and signals 81_11 and Sl_n-1 are high. At this time, the second transistor T2, the fourth transistor ⁇ 4, and the fifth transistor ⁇ 5 are turned off, the first transistor T1 and the third transistor ⁇ 3 are turned on, and the sixth transistor ⁇ 6 drives the light-emitting device D1 to realize light-emitting display.
  • the sixth transistor ⁇ 6 leakage current is
  • the AMOLED pixel circuit shown in FIG. 2 is taken as an example to describe the AMOLED pixel circuit driving method provided by the embodiment of the present invention.
  • the AMOLED pixel circuit driving method provided by the embodiment of the present invention can also be applied to the AMOLED pixel circuit shown in FIG. 3, and the specific process can refer to the above embodiment, no longer - Narration.
  • the AMOLED pixel circuit driving method of the structure provided by the embodiment of the present invention can perform time-division driving on the in-cell touch circuit and the AMOLED pixel circuit by adjusting the timing of the signal without increasing the driving signal. Therefore, the integration degree of the in-cell touch circuit and the AMOLED driving circuit is greatly improved, and the in-cell touch panel circuit and the AMOLED driving circuit are simultaneously fabricated in a limited pixel unit space, thereby significantly improving the quality of the product and reducing the quality. The production difficulty of the product.

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Abstract

一种AMOLED像素电路及其驱动方法、显示装置。像素电路及其驱动方法可以提高内嵌式触控电路与AMOLED驱动电路的集成度。所述AMOLED像素电路包括发光模块（11）、触控模块（12）、控制模块（13）、输出模块（14）以及驱动放大模块（15）。AMOLED像素电路用于制造AMOLED显示装置。

Description

AMOLED像素电路及其驱动方法、 显示装置 技术领域
本发明涉及显示技术领域， 尤其涉及一种 AMOLED像素电路及其 驱动方法、 显示装置。 背景技术
随着显示技术的急速进步， 具有触控功能的显示装置由于其所具有 的可视化操作等优点而逐渐得到越来越多人们的欢迎。 根据触控面板与 显示面板相对位置的不同， 一般可以将现有的具有触控功能的显示装置 分为表面式（on cell )触控面板与内嵌式（ in cell )触控面板两种。 与表 面式触控面板相比， 内嵌式触控面板具有更薄的厚度与更高的光透过 率。
而对于现有的显示装置而言， 有机发光二极管 （ Organic Light Emitting Diode, OLED ) 作为一种电流型发光器件， 因其所具有的自发 光、 快速响应、 宽视角和可制作在柔性村底上等特点而越来越多地被应 用于高性能显示领域当中。 OLED显示装置按照驱动方式的不同可分为 PMOLED(Passive Matrix Driving OLED, 无源矩阵驱动有机发光二极管） 和 AMOLED ( Active Matrix Driving OLED, 有源矩阵驱动有机发光二极 管） 两种， 由于 AMOLED显示器具有低制造成本、 高响应速度、 省电、 可用于便携式设备的直流驱动、 工作温度范围大等等优点而可望成为取 代 LCD ( liquid crystal display, 液晶显示器） 的下一代新型平面显示器。 因此， 具有内嵌式触控功能的 AMOLED显示面板已得到越来越多人们 的青睐。
在现有的 AMOLED显示面板中， 每个 OLED均依靠阵列基板上一 个像素单元内的多个 TFT (Thin Film Transistor,薄膜晶体管）开关所组成 的驱动电路驱动发光以实现显示。 而内嵌式触控面板 ( Touch Screen Panel, 筒称 TSP )是将用于触摸的传感器及驱动电路同样利用阵列工艺 制作在阵列基板上的每个像素单元内。 如果将 TSP的传感器及驱动电路 叠加在 AMOLED像素中， 则需要加入一定数量的驱动电路 TFT, 从而 需要额外占用一定像素单元的空间， 而像素单元中空余空间有限， 这极 大地限制了内嵌式触控面板电路与 AMOLED驱动电路的同时制作。 发明内容
本发明的实施例提供一种 AMOLED像素电路及其驱动方法、 显示 装置， 可以提高内嵌式触控电路与 AMOLED驱动电路的集成度。
为达到上述目的， 本发明的实施例采用如下技术方案：
本发明实施例的一方面， 提供一种 AMOLED像素电路， 包括： 发 光模块、 触控模块、 控制模块、 输出模块以及驱动放大模块；
所述发光模块， 分别连接所述控制模块以及第一电压端， 用于在所 述控制模块的控制下进行发光显示；
所述触控模块， 分别连接所述控制模块、 第四信号线以及第二电压 端， 用于接收输入的触控信号；
所述控制模块， 还连接第一信号线、 所述第二信号线、 第三信号线 以及数据线， 用于根据信号线的输入信号控制所述发光模块和所述触控 模块， 所述第一信号线的信号是所述第四信号线的信号延迟预定时间后 的信号；
所述输出模块， 分别连接所述第五信号线、 所述控制模块和所述数 据线， 用于向所述数据线输出触控信号， 所述第二信号线的信号是所述 第五信号线的信号延迟预定时间后的信号；
所述驱动放大模块， 分别连接所述触控模块、 所述控制模块以及第 二电压端， 用于驱动所述发光模块或放大所述触控模块接收到的触控信 号。
进一步地， 所述发光模块包括： 发光器件， 所述发光器件的一端连 接所述控制模块， 其另一端连接所述第一电压端。
进一步地， 所述控制模块包括：
第一晶体管， 所述第一晶体管的栅极连接所述第一信号线， 其第一 极连接所述发光器件；
第二晶体管， 所述第二晶体管的栅极连接所述第二信号线， 其第二 极连接所述数据线；
第三晶体管， 所述第三晶体管的栅极连接所述第一信号线， 其第一 极连接所述第一晶体管的第二极， 其第二极连接所述第二晶体管的第一 极；
第四晶体管， 所述第四晶体管的栅极连接所述第三信号线， 其第一 极连接所述第一晶体管的第二极。
进一步地， 所述输出模块包括：
第五晶体管， 所述第五晶体管的栅极连接所述第五信号线， 其第一 极连接所述第一晶体管的第二极， 其第二极连接所述数据线。
进一步地， 所述驱动放大模块包括：
第六晶体管， 所述第六晶体管的栅极连接所述第四晶体管的第二 极， 其第一极连接所述第二电压端， 其第二极连接所述第一晶体管的第 二极；
存储电容， 所述存储电容的一端连接所述第二晶体管的第一极， 其 另一端连接所述第四晶体管的第二极。
其中， 所述触控模块包括：
第七晶体管， 所述第七晶体管的栅极连接所述第四信号线， 其第一 极连接所述第二晶体管的第一极， 其第二极连接所述第二电压端；
第八晶体管， 所述第八晶体管的栅极连接所述第四信号线， 其第 二极连接所述第二电压端；
光电二级管， 所述光电二级管的阳极连接所述第八晶体管的第一 极， 其阴极连接所述第四晶体管的第二极。
或者， 所述触控模块包括：
第七晶体管， 所述第七晶体管的栅极连接所述第四信号线， 其第一 极连接所述第二晶体管的第一极， 其第二极连接所述第二电压端；
第八晶体管， 所述第八晶体管的栅极连接所述第四信号线， 其第一 极连接所述第四晶体管的第二极；
感应电极， 所述感应电极与所述第八晶体管的第二极相连接。
需要说明的是， 所述第一晶体管、 所述第二晶体管、 所述第三晶体 管、所述第四晶体管、所述第五晶体管和所述第六晶体管为 N型晶体管， 所述第七晶体管和所述第八晶体管为 P型晶体管； 或，
所述第一晶体管、 所述第二晶体管、 所述第三晶体管、 所述第四晶 体管、 所述第五晶体管和所述第六晶体管为 P型晶体管， 所述第七晶体 管和所述第八晶体管为 N型晶体管。 本发明实施例的另一方面， 提供一种显示装置， 包括如上任一所述 的 AM0LED像素电路。
本发明实施例的又一方面， 提供一种 AM0LED像素电路驱动方法， 包括：
关闭发光模块， 数据线输入初始化信号， 控制模块根据所述初始化 信号初始化触控模块以及驱动放大模块；
所述触控模块接收触控信号；
所述驱动放大模块将所述触控信号通过输出模块放大输出至所述 数据线；
数据线输入初始化信号， 所述初始化信号将所述驱动放大模块预充 电；
关闭所述发光模块， 所述数据线输入数据信号；
关闭所述触控模块， 开启所述发光模块， 所述驱动放大模块驱动所 述发光模块实现发光显示。
具体的， 所述方法具体包括：
初始化阶段： 第一晶体管截止将发光器件关闭， 第二晶体管截止， 第七晶体管和第八晶体管导通， 将触控模块接入第六晶体管的栅极， 存 储电容作为所述第六晶体管的存储电容， 第三晶体管截止， 第四晶体管 导通， 第五晶体管导通， 数据线输入初始化信号， 将所述存储电容预充 所述初始化信号；
触控阶段： 所述第三晶体管和第四晶体管截止， 第七晶体管和第八 晶体管导通， 所述触控模块接收触控信号；
读取阶段： 所述第五晶体管导通， 所述第六晶体管将其栅极电压通 过输出模块放大输出到所述数据线；
充电阶段： 第三晶体管截止， 第二晶体管、 第四晶体管、 第五晶体 管、 第七晶体管和第八晶体管导通， 数据线输入初始化信号使得存储电 容充电；
写入阶段： 所述第三晶体管、 所述第四晶体管、 所述第五晶体管、 所述第七晶体管和所述第八晶体管截止， 所述第二晶体管导通， 所述数 据线输入灰阶电压， 所述存储电容通过所述第六晶体管放电至截止状 态； 发光阶段： 所述第二晶体管、 所述第四晶体管和所述第五晶体管截 止， 所述第一晶体管和所述第三晶体管导通， 所述第六晶体管驱动所述 发光器件实现发光显示。
其中， 所述触控模块接收触控信号包括：
当进行触控操作时， 所述触控模块根据光电二级管的受光量确定接 收触控信号； 或，
当进行触控操作时， 所述触控模块根据感应电极与用户触控端之间 所形成的感应电容值确定接收触控信号。
需要说明的是， 所述第一晶体管、 所述第二晶体管、 所述第三晶体 管、所述第四晶体管、所述第五晶体管和所述第六晶体管为 N型晶体管， 所述第七晶体管和所述第八晶体管为 P型晶体管； 或，
所述第一晶体管、 所述第二晶体管、 所述第三晶体管、 所述第四晶 体管、 所述第五晶体管和所述第六晶体管为 P型晶体管， 所述第七晶体 管和所述第八晶体管为 N型晶体管。
本发明实施例提供的 AMOLED像素电路及其驱动方法、 显示装置， 通过在 AMOLED像素电路中集成内嵌式触控电路， 使得发光模块和触 控模块共用控制模块和驱动放大模块。 这样一来， 在不增加驱动信号的 基础上， 通过调节信号的时序， 对内嵌式触控电路和 AMOLED像素电 路进行分时驱动， 从而大大提高了内嵌式触控电路与 AMOLED驱动电 路的集成度， 实现了内嵌式触控面板电路与 AMOLED驱动电路在有限 的像素单元空间内的同时制作， 显著提高了产品的质量， 降低了产品的 生产难度。 附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案， 下面将对实 施例或现有技术描述中所需要使用的附图作筒单地介绍， 显而易见地， 下面 描述中的附图仅仅是本发明的一些实施例， 对于本领域普通技术人员来讲， 在不付出创造性劳动的前提下， 还可以根据这些附图获得其他的附图。
图 1为本发明实施例提供的一种 AMOLED像素电路的结构示意图； 图 2为本发明实施例提供的一种 AMOLED像素电路的电路结构示意图； 图 3为本发明实施例提供的另一 AMOLED像素电路的电路结构示意图； 以及
图 4为驱动如图 2所示的一种 AMOLED像素电路的信号波形示意图。 具体实施方式
下面将结合本发明实施例中的附图， 对本发明实施例中的技术方案进行 清楚、 完整地描述， 显然， 所描述的实施例仅仅是本发明一部分实施例， 而 不是全部的实施例。 基于本发明中的实施例， 本领域普通技术人员在没有做 出创造性劳动前提下所获得的所有其他实施例， 都属于本发明保护的范围。
本发明所有实施例中采用的晶体管均可以为薄膜晶体管或场效应 管或其他特性相同的器件， 由于这里采用的晶体管的源极、 漏极是对称 的， 所以其源极、 漏极是没有区别的。 在本发明实施例中， 为区分晶体 管除栅极之外的两极， 将其中一极称为源极， 另一极称为漏极。 此外， 按照晶体管的特性区分可以将晶体管分为 N型晶体管或 P型晶体管，在 本发明实施例中， 当采用 N型晶体管时， 其第一极可以是源极， 第二极 可以是漏极， 当采用 P型晶体管时， 其第一极可以是漏极， 第二极可以 是源极。
本发明实施例提供的 AMOLED像素电路， 如图 1所示， 包括： 发 光模块 1 1、 触控模块 12、 控制模块 13、 输出模块 14以及驱动放大模块 15。
发光模块 1 1 , 分别连接控制模块 13以及第一电压端 VI , 用于在控 制模块 13的控制下进行发光显示。
触控模块 12 , 分别连接控制模块 13、 第四信号线 S l_n- 1 以及第二 电压端 V2 , 用于接收输入的触控信号。
控制模块 13 , 还连接第一信号线 S l_n、 第二信号线 S2_n、 第三信 号线 S3_n以及数据线 DATA , 用于根据信号线的输入信号控制发光模 块 1 1和触控模块 12 , 所述第一信号线的信号是所述第四信号线的信号 延迟预定时间后的信号。
输出模块 14 , 分别连接第五信号线 S2_n- 1、 控制模块 13和数据线 DATA , 用于向数据线 DATA输出触控信号， 所述第二信号线的信号是 所述第五信号线的信号延迟预定时间后的信号。
驱动放大模块 15 , 分别连接触控模块 12、 控制模块 13以及第二电 压端 V2 , 用于驱动发光模块 1 1或放大触控模块 12接收到的触控信号。 在图 1中， 为图示方便， 将第一信号线 S l_n和第四信号线 S l_n- 1 一起图示为 S 1 , 将第二信号线 S2_n和第五信号线 S2_n- 1—起图示为 S2。
本发明实施例提供的 AMOLED像素电路，通过在 AMOLED像素电 路中集成内嵌式触控电路， 使得发光模块和触控模块共用控制模块和驱 动放大模块。 这样一来， 在不增加驱动信号的基础上， 通过调节信号的 时序， 对内嵌式触控电路和 AMOLED像素电路进行分时驱动， 从而大 大提高了内嵌式触控电路与 AMOLED驱动电路的集成度， 实现了内嵌 式触控面板电路与 AMOLED驱动电路在有限的像素单元空间内的同时 制作， 显著提高了产品的质量， 降低了产品的生产难度。
其中， 第一电压端 VI可以输入高电平 VDD , 第二电压端 V2可以 输入低电平 VSS。 该 AMOLED像素电路中的发光模块 1 1和触控模块 12共用一条数据线 DATA , 该数据线 DATA主要用于分时段向该
AMOLED像素电路中输入发光控制信号或读取触控信号。
具体的， 如图 2所示， 在本发明实施例提供的 AMOLED像素电路 中， 发光模块 1 1可以包括： 发光器件 Dl。
该发光器件 D1的一端连接控制模块 13 , 其另一端连接第一电压端
VI。
在本发明实施例中，发光器件 D1可以是现有技术中包括 LED( Light
Emitting Diode , 发光二极管 ) 或 OLED ( Organic Light Emitting Diode , 有机发光二极管） 在内的多种电流驱动发光器件。 在本发明实施例中， 是以 OLED为例进行的说明。
进一步地， 如图 2所示， 控制模块 13可以包括： 第一晶体管 Tl、 第二晶体管 Τ2、 第三晶体管 Τ3以及第四晶体管 Τ4。
该第一晶体管 T1的栅极连接第一信号线 S l_n , 其第一极连接发光 器件 Dl。
该第二晶体管 T2的栅极连接第二信号线 S2_n , 其第二极连接数据 线 DATA。
该第三晶体管 T3的栅极连接第一信号线 S l_n , 其第一极连接第一 晶体管 T1的第二极， 其第二极连接第二晶体管 T2的第一极。 该第四晶体管 T4的栅极连接第三信号线 S3_n, 其第一极连接第一 晶体管 T1的第二极。
进一步地， 如图 2所示， 输出模块 14可以包括： 第五晶体管 T5。 该第五晶体管 Τ5的栅极连接第五信号线 S2_n-1 , 其第一极连接第 一晶体管 T1的第二极， 其第二极连接数据线 DATA。
在如图 2所示的 AMOLED像素电路中，驱动放大模块 15可以包括： 第六晶体管 T6、 以及存储电容 Cl。
该第六晶体管 T6的栅极连接第四晶体管 T4的第二极， 其第一极连 接第二电压端 V2 , 其第二极连接第一晶体管 T1的第二极。
该存储电容 C1的一端连接第二晶体管 T2的第一极，其另一端连接 第四晶体管 T4的第二极。
进一步地， 如图 2所示， 触控模块 12可以包括： 第七晶体管 T7、 第八晶体管 Τ8以及光电二级管 D2。
该第七晶体管 T7的栅极连接第四信号线 Sl_n-1 , 其第一极连接第 二晶体管 T2的第一极， 其第二极连接第二电压端 V2。
该第八晶体管 T8的栅极连接第四信号线 Sl_n-1 , 其第二极连接第 二电压端 V2。
该光电二级管 D2的阳极连接第八晶体管 T8的第一极，其阴极连接 第四晶体管 T4的第二极。
采用这样一种结构的触控模块 12 , 当用户进行触控操作时， 光电二 级管 D2的受光量将由于用户在触控时所产生的遮光的影响而发生变化， 光电二级管 D2根据受光量的不同将产生不同的漏电流， 通过考察显示 面板不同像素区域光电二级管 D2漏电流的不同即可准确的实现触控位 置的检测。
当然， 本发明实施例所提供的 AMOLED像素电路中的触控模块 12 并不局限于感光式触控模块， 其他各种已知的触控电路结构同样可以适 用于本发明。 例如， 在如图 3所示的 AMOLED像素电路中， 触控模块 12的结构还可以包括： 第七晶体管 T7、 第八晶体管 Τ8、 以及感应电极。
该第七晶体管 Τ7的栅极连接第四信号线 Sl_n-1 , 其第一极连接第 二晶体管 T2的第一极， 其第二极连接第二电压端 V2。
该第八晶体管 T8的栅极连接第四信号线 S_n-1 , 其第一极连接第四 晶体管 T4的第二极。
感应电极与第八晶体管 Τ8的第二极相连接。
采用这样一种结构的触控模块 12 , 当用户进行触控操作时， 将会在 用户的手指或其他触控装置与感应电极之间形成感应电容 C2,通过测量 该感应电容的位置同样可以精确的实现触控位置的检 ¾ 'J。
实际应用的过程中， 以上两种结构的触控模块 12同样可以根据实 际需要进行选择或替代。
需要说明的是， 在本发明实施例所提供的 AMOLED像素电路中， 第一晶体管 Tl、 第二晶体管 Τ2、 第三晶体管 Τ3、 第四晶体管 Τ4、 第五 晶体管 Τ5和第六晶体管 Τ6可以采用 Ν型晶体管， 第七晶体管 Τ7和第 八晶体管 Τ8可以采用 Ρ型晶体管。 或者， 第一晶体管 Tl、 第二晶体管 Τ2、 第三晶体管 Τ3、 第四晶体管 Τ4、 第五晶体管 Τ5和第六晶体管 Τ6 可以采用 Ρ型晶体管，第七晶体管 Τ7和第八晶体管 Τ8可以采用 Ν型晶 体管。
在本发明实施例中， 是以第一晶体管 Tl、 第二晶体管 Τ2、 第三晶 体管 Τ3、 第四晶体管 Τ4、 第五晶体管 Τ5和第六晶体管 Τ6采用 Ν型晶 体管，第七晶体管 Τ7和第八晶体管 Τ8采用 Ρ型晶体管为例进行的说明， 可以想到， 当以上晶体管的类型改变时， 通过相应的改变控制信号的电 位高低同样可以实现相同的驱动效果。
采用本发明实施例提供的这样一种结构的 AMOLED像素电路， 可 以在不增加驱动信号的基础上， 通过调节信号的时序， 对内嵌式触控电 路和 AMOLED像素电路进行分时驱动， 从而大大提高了内嵌式触控电 路与 AMOLED驱动电路的集成度， 实现了内嵌式触控面板电路与 AMOLED驱动电路在有限的像素单元空间内的同时制作，显著提高了产 品的质量， 降低了产品的生产难度。
本发明实施例还提供一种显示装置， 包括有机发光显示器， 其他显 示器等。 所述显示装置包括如上所述的任意一种 AMOLED像素电路。 所述显示装置可以包括由多个 AMOLED像素单元构成的阵列， 每一个 AMOLED像素单元包括如上所述的任意一个 AMOLED像素电路。 具有 与本发明前述实施例提供的像素电路相同的有益效果， 由于像素电路在 前述实施例中已经进行了详细说明， 此处不再赘述。 具体的，本发明实施例所提供的显示装置可以是包括 LED显示器或 OLED显示器在内的具有电流驱动发光器件的显示装置。
本发明实施例提供的显示装置， 包括 AMOLED像素电路， 通过在 AMOLED像素电路中集成内嵌式触控电路，使得发光模块和触控模块共 用控制模块和驱动放大模块。 这样一来， 在不增加驱动信号的基础上， 通过调节信号的时序， 对内嵌式触控电路和 AMOLED像素电路进行分 时驱动， 从而大大提高了内嵌式触控电路与 AMOLED驱动电路的集成 度， 实现了内嵌式触控面板电路与 AMOLED驱动电路在有限的像素单 元空间内的同时制作，显著提高了产品的质量， 降低了产品的生产难度。
本发明实施例提供的 AMOLED像素电路驱动方法， 可以应用于前 述实施例中所提供的各种 AMOLED像素电路， 包括：
5101、 关闭发光模块， 数据线输入初始化信号， 控制模块根据所述 初始化信号初始化触控模块以及驱动放大模块；
5102、 触控模块接收触控信号；
S103、 驱动放大模块将触控信号通过输出模块放大输出至数据线；
5104、 数据线输入初始化信号， 该初始化信号将驱动放大模块预充 电；
5105、 关闭发光模块， 数据线输入数据信号；
5106、 关闭触控模块， 开启发光模块， 驱动放大模块驱动发光模块 实现发光显示。
本发明实施例提供的 AMOLED像素电路驱动方法， 通过在
AMOLED像素电路中集成内嵌式触控电路，使得发光模块和触控模块共 用控制模块和驱动放大模块。 这样一来， 在不增加驱动信号的基础上， 通过调节信号的时序， 对内嵌式触控电路和 AMOLED像素电路进行分 时驱动， 从而大大提高了内嵌式触控电路与 AMOLED驱动电路的集成 度， 实现了内嵌式触控面板电路与 AMOLED驱动电路在有限的像素单 元空间内的同时制作，显著提高了产品的质量， 降低了产品的生产难度。
以下以图 2所示的 AMOLED像素电路为例对本发明实施例提供的 AMOLED像素电路驱动方法进行详细说明，其中，用于驱动该 AMOLED 像素电路的各条数据信号线的时序波形可以如图 4所示。需要说明的是， 在本发明实施例中， 第一晶体管 T1和第三晶体管 T3的栅极连接第一信 号线 Sl_n , 第七晶体管 T7以及第八晶体管 Τ8的栅极连接第四信号线 Sl_n-1 , 其中， 信号 Sl_n-1的波形经过时延即得到信号 Sl_n的波形； 第二晶体管 T2的栅极连接第二信号线 S2_n , 第五晶体管 T5的栅极连 接第二信号线 S2_n-1 , 其中， 信号 S2_n-1的波形经过时延即得到信号 S2_n的波形；第四晶体管 T4的栅极连接第三信号线 S3 ,输入信号 S3_n。
在如图 2所示的 AMOLED像素电路中， 是以第一晶体管 Tl、 第二 晶体管 Τ2、 第三晶体管 Τ3、 第四晶体管 Τ4、 第五晶体管 Τ5和第六晶 体管 Τ6采用 Ν型晶体管， 第七晶体管 Τ7和第八晶体管 Τ8采用 Ρ型晶 体管为例进行的说明， 可以想到， 当以上晶体管的类型改变时， 通过相 应的改变控制信号的电位高低同样可以实现相同的驱动效果。
具体的， 结合图 4所示的用于驱动该 AMOLED像素电路的各条数 据信号线的时序波形， 具体参考图 4中 DATA信号线下面标注的各工作 阶段：初始化阶段（ INITIAL )、触控阶段（ PHOTO )、读取阶段（ READ )、 充电阶段（CHARGE ) 、 写入阶段 （WRITE ) 、 发光阶段（ OLED ) , 本发明实施例提供的 AMOLED像素电路驱动方法具体可以包括：
初始化阶段（ INITIAL )： 在此阶段下， 信号 Sl_n、 S2_n与 Sl_n-1 均为低电平， 信号 83_11与 S2_n-1为高电平。 此时， 第一晶体管 T1截 止将发光器件关闭， 第二晶体管 T2截止， 第七晶体管 T7和第八晶体管 T8导通， 将触控模块 12接入第六晶体管 T6的栅极， 存储电容 C1作为 第六晶体管 T6的存储电容； 此外， 第三晶体管 T3截止， 第四晶体管 T4导通， 第五晶体管 T5导通， 数据线 DATA输入初始化信号 VINI, 将存储电容 C1预充该初始化信号 VINI。
这样一来， 通过对触控模块 12的初始化， 可以将存储电容 C1预充 初始化信号 VINI, 从而可以保证下一个阶段中晶体管 T6工作于饱和放 大状态。
触控阶段（ PHOTO )：在此阶段下，信号 Sl_n、 S2_n、 S3_n与 Sl_n-1 均为低电平， 信号 S2_n-1为高电平。 此时， 第三晶体管 T3和第四晶体 管 T4截止， 第七晶体管 T7和第八晶体管 T8导通， 触控模块 12接收触 控信号。
其中， 触控模块 12的结构可以如图 2所示， 该触控模块 12包括光 电二级管 D2 , 采用这样一种结构的触控模块 12, 当用户进行触控操作 时， 光电二级管 D2的受光量将由于用户在触控时所产生的遮光的影响 而发生变化， 光电二级管 D2根据受光量的不同将产生不同的漏电流， 通过考察显示面板不同像素区域中光电二极管 D2的漏电流的不同即可 准确的实现触控位置的检测。
当然， 本发明实施例所提供的 AMOLED像素电路中的触控模块 12 并不局限于感光式触控模块， 其他各种已知的触控电路结构同样可以适 用于本发明。 例如， 触控模块 12的结构还可以如图 3所示， 该触控模 块 12包括感应电极， 采用这样一种结构的触控模块 12, 当用户进行触 控操作时， 在用户的手指或其他触控装置与感应电极之间将形成感应电 容 C2, 通过测量该感应电容的位置同样可以精确的实现触控位置的检 测。
实际应用的过程中， 以上两种结构的触控模块 12同样可以根据实 际需要进行选择或替代。
具体的可以以感光式触控模块为例， 对触控阶段进行详细的说明。 当第三晶体管 T3和第四晶体管 T4截止时， 光电二级管 D2检测显示面 板的触摸状态。 当显示面板被用户的手指触摸时， 外部光源无法照射到 光电二级管 D2, 则 D2的受光量较少， 此时的光感应漏电流较小， 则 PHOTO阶段存储电容 C1电压因为漏电产生的电平变化也较小； 当显示 面板未被触摸时， 外部光源可以照射到光电二级管 D2 , 则 D2的受光量 较多， 产生较大的光感应漏电流， 则 PHOTO阶段存储电容 C1电压因为 漏电产生较大电平变化。 因此， 如果被触摸， 则放大晶体管 T6的栅极 电压相对初始电压变化小； 如果未被触摸， 则放大晶体管 T6的栅极电 压相对初始电压变 4t大。
读取阶段（READ )： 在此阶段下，信号 Sl_n、 S2_n、 S3_n与 Sl_n-1 均为低电平， 信号 S2_n-1为高电平。 此时， 第五晶体管 T5导通， 第六 晶体管 T6栅极的存储电容 C1的电压不再因为漏电变化，上一阶段的结 果被存储于存储电容 C1上。第六晶体管 T6将其栅极电压放大输出到数 据线 DATA。
这样一来， 数据线 DATA此时用作触控结果输出电压的读出线， 放 大晶体管 T6将其栅极电压放大输出到数据线 DATA, 从而将触控结果 输出给设置于显示面板***的触控信号读取电路。 以上 3个阶段为触控功能电路的工作过程， 通过检测触摸信号并读 取， 从而实现触控功能。
充电阶段（ CHARGE ) ： 在此阶段下， 信号 Sl_n与 Sl_n-1为低电 平， 信号 S2_n、 S3_n与 S2_n-1均为高电平。 此时， 第三晶体管 T3截 止， 第二晶体管 T2、 第四晶体管 Τ4、 第五晶体管 Τ5、 第七晶体管 Τ7 和第八晶体管 Τ8导通， 数据线输入初始化信号 VINI, 则第六晶体管 Τ6 栅极（即存储电容 C1一端）电平为 VINI,存储电容 C1另一端电平为 VSS , 即存储电容 C1两端被充电为 V^ - Vs^
写入阶段（WRITE ) ： 在此阶段下， 信号 Sl_n 、 S3_n与 S2_n-1 为低电平， 信号 82_11与 Sl_n-1为高电平。 此时， 第三晶体管 T3、 第四 晶体管 Τ4、 第五晶体管 Τ5、 第七晶体管 Τ7和第八晶体管 Τ8截止， 第 二晶体管 Τ2导通，数据线 DATA输入灰阶电压，存储电容 C1通过第六 晶体管 T6放电至饱和截止状态。
数据线 DATA此时为 AMOLED灰阶电压输入 VDATA , 则存储电容 C1端由 VSS变为 VDATA。第六晶体管 T6栅极电平变为 VDATA + V^ - VSS。 由于晶体管 T4、 Τ5、 Τ7和 Τ8截止， 存储电容 CI电压通过第六晶体管 T6放电至截止。 结果， 第六晶体管 T6栅极电平为 VTHT1 , 存储电容 C1 两端1 ¾压为 VDATA ~ VTHTI。
发光阶段（OLED ) ： 在此阶段下， 信号 S2_n、 S3_n与 S2_n-1为 低电平， 信号 81_11与 Sl_n-1为高电平。 此时， 第二晶体管 T2、 第四晶 体管 Τ4和第五晶体管 Τ5截止， 第一晶体管 T1和第三晶体管 Τ3导通， 第六晶体管 Τ6驱动发光器件 D1实现发光显示。
具体的， 第六晶体管 Τ6漏电流为
I丄 DS—Tl =k ^ ' (V V DD V THOLED V V DATA +V V THX1 V v THX1 ) y2=k ^ ' (V v DD V THOLED V v DATA )7 ' ^ m J IDS— OLED=IDS— T1 , 可见， 该漏电流与第六晶体管 T6的阈值电压无关， 从 而可以消除由于晶体管 T6阈值电压不均匀造成的 OLED发光不均匀， 进一步提高了显示装置产品的质量。 D1发光直到下一帧。
需要说明的是， 以上也仅是以图 2所示的 AMOLED像素电路为例， 对本发明实施例提供的 AMOLED像素电路驱动方法进行的说明。 本发 明实施例提供的 AMOLED像素电路驱动方法同样可以适用于如图 3所 示的 AMOLED像素电路， 具体的过程可以参照上述实施例， 不再—— 赘述。
采用本发明实施例提供的这样一种结构的 AMOLED像素电路驱动 方法， 可以在不增加驱动信号的基础上， 通过调节信号的时序， 对内嵌 式触控电路和 AMOLED像素电路进行分时驱动， 从而大大提高了内嵌 式触控电路与 AMOLED驱动电路的集成度， 实现了内嵌式触控面板电 路与 AMOLED驱动电路在有限的像素单元空间内的同时制作， 显著提 高了产品的质量， 降低了产品的生产难度。
本领域普通技术人员可以理解： 实现上述方法实施例的全部或部分 步骤可以通过程序指令相关的硬件来完成， 前述的程序可以存储于一计 算机可读取存储介质中， 该程序在执行时， 执行包括上述方法实施例的 步骤； 而前述的存储介质包括： ROM、 RAM, 磁碟或者光盘等各种可以 存储程序代码的介质。
以上所述， 仅为本发明的具体实施方式， 但本发明的保护范围并不 局限于此， 任何熟悉本技术领域的技术人员在本发明揭露的技术范围 内， 可轻易想到变化或替换， 都应涵盖在本发明的保护范围之内。 因此， 本发明的保护范围应以所述权利要求的保护范围为准。

Claims

权 利 要 求 书
1、 一种 AMOLED像素电路， 其特征在于， 包括： 发光模块、 触控 模块、 控制模块、 输出模块以及驱动放大模块；
所述发光模块， 分别连接所述控制模块以及第一电压端， 用于在所 述控制模块的控制下进行发光显示；
所述触控模块， 分别连接所述控制模块、 第四信号线以及第二电压 端， 用于接收输入的触控信号；
所述控制模块， 还连接第一信号线、 所述第二信号线、 第三信号线 以及数据线， 用于根据信号线的输入信号控制所述发光模块和所述触控 模块， 所述第一信号线的信号是所述第四信号线的信号延迟预定时间后 的信号；
所述输出模块， 分别连接所述第五信号线、 所述控制模块和所述数 据线， 用于向所述数据线输出触控信号， 所述第二信号线的信号是所述 第五信号线的信号延迟预定时间后的信号；
所述驱动放大模块， 分别连接所述触控模块、 所述控制模块以及第 二电压端， 用于驱动所述发光模块或放大所述触控模块接收到的触控信 号。
2、 根据权利要求 1所述的 AMOLED像素电路， 其特征在于， 所述 发光模块包括：
发光器件， 所述发光器件的一端连接所述控制模块， 其另一端连接 所述第一电压端。
3、 根据权利要求 2所述的 AMOLED像素电路， 其特征在于， 所述 控制模块包括：
第一晶体管， 所述第一晶体管的栅极连接所述第一信号线， 其第一 极连接所述发光器件；
第二晶体管， 所述第二晶体管的栅极连接所述第二信号线， 其第二 极连接所述数据线；
第三晶体管， 所述第三晶体管的栅极连接所述第一信号线， 其第一 极连接所述第一晶体管的第二极， 其第二极连接所述第二晶体管的第一 极； 第四晶体管， 所述第四晶体管的栅极连接所述第三信号线， 其第一 极连接所述第一晶体管的第二极。
4、 根据权利要求 3所述的 AMOLED像素电路， 其特征在于， 所述 输出模块包括：
第五晶体管， 所述第五晶体管的栅极连接所述第五信号线， 其第一 极连接所述第一晶体管的第二极， 其第二极连接所述数据线。
5、 根据权利要求 4所述的 AMOLED像素电路， 其特征在于， 所述 驱动放大模块包括：
第六晶体管， 所述第六晶体管的栅极连接所述第四晶体管的第二 极， 其第一极连接所述第二电压端， 其第二极连接所述第一晶体管的第 二极；
存储电容， 所述存储电容的一端连接所述第二晶体管的第一极， 其 另一端连接所述第四晶体管的第二极。
6、 根据权利要求 5所述的 AMOLED像素电路， 其特征在于， 所述 触控模块包括：
第七晶体管， 所述第七晶体管的栅极连接所述第四信号线， 其第一 极连接所述第二晶体管的第一极， 其第二极连接所述第二电压端；
第八晶体管， 所述第八晶体管的栅极连接所述第四信号线， 其第二 极连接所述第二电压端；
光电二级管， 所述光电二级管的阳极连接所述第八晶体管的第一 极， 其阴极连接所述第四晶体管的第二极。
7、 根据权利要求 5所述的 AMOLED像素电路， 其特征在于， 所述 触控模块包括：
第七晶体管， 所述第七晶体管的栅极连接所述第四信号线， 其第一 极连接所述第二晶体管的第一极， 其第二极连接所述第二电压端；
第八晶体管， 所述第八晶体管的栅极连接所述第四信号线， 其第一 极连接所述第四晶体管的第二极；
感应电极， 所述感应电极与所述第八晶体管的第二极相连接。
8、 根据权利要求 6或 7所述的 AMOLED像素电路， 其特征在于， 所述第一晶体管、 所述第二晶体管、 所述第三晶体管、 所述第四晶 体管、 所述第五晶体管和所述第六晶体管为 N型晶体管， 所述第七晶体 管和所述第八晶体管为 P型晶体管； 或，
所述第一晶体管、 所述第二晶体管、 所述第三晶体管、 所述第四晶 体管、 所述第五晶体管和所述第六晶体管为 P型晶体管， 所述第七晶体 管和所述第八晶体管为 N型晶体管。
9、 一种显示装置， 其特征在于， 包括如权利要求 1至 8中任一所 述的 AMOLED像素电路。
10、 一种 AMOLED像素电路驱动方法， 其特征在于， 包括： 关闭发光模块， 数据线输入初始化信号， 控制模块根据所述初始化 信号初始化触控模块以及驱动放大模块；
所述触控模块接收触控信号；
所述驱动放大模块将所述触控信号通过输出模块放大输出至所述 数据线；
数据线输入初始化信号， 所述初始化信号将所述驱动放大模块预充 电；
关闭所述发光模块， 所述数据线输入数据信号；
关闭所述触控模块， 开启所述发光模块， 所述驱动放大模块驱动所 述发光模块实现发光显示。
11、 根据权利要求 10所述的方法， 其特征在于， 所述方法具体包 括：
初始化阶段： 第一晶体管截止将发光器件关闭， 第二晶体管截止， 第七晶体管和第八晶体管导通， 将触控模块接入第六晶体管的栅极， 存 储电容作为所述第六晶体管的存储电容， 第三晶体管截止， 第四晶体管 导通， 第五晶体管导通， 数据线输入初始化信号， 将所述存储电容预充 所述初始化信号；
触控阶段： 所述第三晶体管和第四晶体管截止， 第七晶体管和第八 晶体管导通， 所述触控模块接收触控信号；
读取阶段： 所述第五晶体管导通， 所述第六晶体管将其栅极电压放 大输出到所述数据线；
充电阶段： 第三晶体管截止， 第二晶体管、 第四晶体管、 第五晶体 管、 第七晶体管和第八晶体管导通， 数据线输入初始化信号使得存储电 容充电； 写入阶段： 所述第三晶体管、 所述第四晶体管、 所述第五晶体管、 所述第七晶体管和所述第八晶体管截止， 所述第二晶体管导通， 所述数 据线输入灰阶电压， 所述存储电容通过所述第六晶体管放电至截止状 态；
发光阶段： 所述第二晶体管、 所述第四晶体管和所述第五晶体管截 止， 所述第一晶体管和所述第三晶体管导通， 所述第六晶体管驱动所述 发光器件实现发光显示。
12、 根据权利要求 10或 11所述的方法， 其特征在于， 所述触控模 块接收触控信号包括：
当进行触控操作时， 所述触控模块根据光电二级管的受光量确定接 收触控信号； 或，
当进行触控操作时， 所述触控模块根据感应电极与用户触控端之间 所形成的感应电容值确定接收触控信号。
13、 根据权利要求 11所述的方法， 其特征在于，
所述第一晶体管、 所述第二晶体管、 所述第三晶体管、 所述第四晶 体管、 所述第五晶体管和所述第六晶体管为 N型晶体管， 所述第七晶体 管和所述第八晶体管为 P型晶体管； 或，
所述第一晶体管、 所述第二晶体管、 所述第三晶体管、 所述第四晶 体管、 所述第五晶体管和所述第六晶体管为 P型晶体管， 所述第七晶体 管和所述第八晶体管为 N型晶体管。
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