WO2021022838A1 - Circuit d'attaque de déclenchement et dispositif d'affichage - Google Patents

Circuit d'attaque de déclenchement et dispositif d'affichage Download PDF

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Publication number
WO2021022838A1
WO2021022838A1 PCT/CN2020/086619 CN2020086619W WO2021022838A1 WO 2021022838 A1 WO2021022838 A1 WO 2021022838A1 CN 2020086619 W CN2020086619 W CN 2020086619W WO 2021022838 A1 WO2021022838 A1 WO 2021022838A1
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Prior art keywords
transistor
signal
pull
trigger
driving circuit
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PCT/CN2020/086619
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English (en)
Chinese (zh)
Inventor
赖谷皇
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南京中电熊猫液晶显示科技有限公司
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Publication of WO2021022838A1 publication Critical patent/WO2021022838A1/fr

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    • 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
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0233—Improving the luminance or brightness uniformity across the screen
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/04—Maintaining the quality of display appearance
    • G09G2320/043—Preventing or counteracting the effects of ageing
    • G09G2320/046—Dealing with screen burn-in prevention or compensation of the effects thereof

Definitions

  • This application relates to the field of display, especially trigger driving circuits and display devices.
  • OLED display panels have self-luminescence, low driving voltage, high luminous efficiency, short response time, high definition and contrast, a viewing angle of nearly 180 degrees, and a wide operating temperature range, enabling flexible display and Large-area full-color display and many other advantages are recognized by the industry as the display device with the most development potential.
  • OLEDs can be divided into passive matrix OLED (passive matrix, PM) and active matrix OLED (active matrix, AM) according to the driving mode.
  • the AMOLED display panel has a plurality of pixels arranged in an array, and each pixel controls the OLED display drive through a TFT drive current, thereby controlling the display of the picture.
  • the conventional AMOLED pixel driving circuit has a 2T1C structure, including: a switching thin film transistor (ie, switch TFT) T1, a driving thin film transistor (ie, driver TFT) T2, and a storage capacitor (capacitance storage, Cst).
  • the switching thin film transistor T1 and the driving thin film transistor T2 are both N-type thin film transistors.
  • the driving current of the organic light emitting diode OLED is controlled by the driving thin film transistor T2.
  • the current amplification factor is determined by the electrical characteristics of the driving thin film transistor T2.
  • Vgs represents the voltage difference between the gate and the source of the driving thin film transistor T2
  • Vth is the threshold voltage of the driving thin film transistor T2. It can be seen that the driving current IOLED is related to the threshold voltage of the driving thin film transistor T2. Because the threshold voltage Vth of the driving thin film transistor T2 easily drifts, the driving current of the OLED is changed, which easily causes uneven brightness of the AMOLED display panel, poor display, and affects image quality.
  • AMOLED pixel driving circuit does not have the function of compensating the threshold voltage Vth of the driving thin film transistor, related researchers have proposed a variety of pixel driving circuits that can compensate the threshold voltage of the driving pixel thin film transistor.
  • the main control signals required by the compensation circuit in the OLED are the scan signal G(n) and the trigger drive signal (emission on array, EOA). Therefore, the peripheral drive circuit in the OLED display panel is in addition to the original liquid crystal display (LCD) panel.
  • the required GDM circuit block a set of trigger drive circuit areas need to be added to generate the trigger drive signal required by the internal compensation circuit of the OLED.
  • the scan signal G(n) is provided by the GDM drive circuit block, and the trigger drive signal is The trigger drive block is provided, and since the GDM and the trigger drive circuit module are independent circuits, the number of transistors and the number of clocks (CK) cannot meet the needs of the narrow side of the panel.
  • the present application provides a trigger driving circuit and a display device, which use the scan signal of the existing GDM circuit to generate the trigger driving signal required by the OLED, thereby saving the number of transistors and meeting the requirement of a narrow frame.
  • the present application discloses a trigger driving circuit for providing a signal for a pixel driving circuit.
  • the trigger driving circuit is used for generating a compensation control signal and a voltage input control signal according to a received scan signal or a pull-up node signal output by the scan driving circuit. And a reset signal; the compensation control signal is used in the compensation phase of the pixel drive circuit, the voltage input control signal is used in the voltage input phase of the pixel drive circuit, and the reset signal is used in the reset phase of the pixel drive circuit; And the trigger driving circuit is also used to generate a light emission control signal for the light emission stage of the pixel driving circuit according to the received clock signal.
  • the trigger driving circuit includes a pull-up control module, a pull-up module, a node pull-down module, and an output pull-down module; the pull-up control module, the node pull-down module, and the pull-up module are connected to the first node, and the output pull-down module
  • the modules are respectively connected to the pull-up module and the node pull-down module; the pull-up control module inputs the clock signal; the node pull-down module inputs the scan signal or the pull-up node signal; the pull-up module
  • a trigger driving signal is output through a trigger driving signal line; the trigger driving signal includes the compensation control signal, the voltage input control signal, the reset signal, and the light emission control signal.
  • the pull-up control module includes a sixth transistor; the control terminal of the sixth transistor inputs the clock signal, the first path terminal of the sixth transistor is connected to a high potential, and the second The passage end is connected to the first node.
  • the node pull-down module includes a fifth transistor; the control end of the fifth transistor inputs the scan signal or the pull-up node signal output by the scan drive circuit, and the first path end of the fifth transistor is connected The first node and the second path end of the fifth transistor are connected to a low potential.
  • the pull-up module includes a seventh transistor; a control terminal of the seventh transistor is connected to a first node, a first path end of the seventh transistor is connected to a high potential, and a second path end of the seventh transistor
  • the trigger driving signal is output through the trigger driving signal line.
  • the output pull-down module includes a ninth transistor and a tenth transistor; the control terminal of the ninth transistor and the control terminal of the tenth transistor are connected and connected to the node pull-down module, and the first transistor of the tenth transistor The pass end is connected to the trigger drive signal line of the pull-up module, the second pass end of the tenth transistor is connected to the first pass end of the ninth transistor, and the second pass end of the ninth transistor is connected to a low potential.
  • the trigger drive circuit further includes an eighth transistor; the control terminal of the eighth transistor is connected to the trigger drive signal line of the pull-up module, and the first path terminal of the eighth transistor is connected to the tenth transistor respectively.
  • the second path end of the ninth transistor is connected to the first path end of the ninth transistor, and the second path end of the eighth transistor is connected to a high potential.
  • the eighth transistor can be used to prevent leakage, and can also be called an anti-leakage module.
  • the trigger driving circuit further includes a clearing module;
  • the clearing module includes an eleventh transistor and a twelfth transistor; the control terminal of the eleventh transistor inputs a clearing signal, and the first of the eleventh transistor The pass end is connected to the trigger drive signal line of the pull-up module, the second pass end of the eleventh transistor is connected to a low potential; the control end of the twelfth transistor inputs a clear signal, and the twelfth transistor The first path end is connected to the first node, and the second path end of the twelfth transistor is connected to a low potential.
  • the trigger driving circuit further includes a first capacitor; the first capacitors are respectively connected to the first node and the trigger driving signal line.
  • the application also discloses a display device, including a scan driving circuit, a pixel driving circuit, a data driving circuit, and a trigger driving circuit as described above; the trigger driving circuit is connected to the scan driving circuit, the pixel driving circuit, and the data driving circuit respectively. connection;
  • the trigger driving circuit is used to receive a scan signal or a pull-up node signal output by the scan driving circuit, and generate a compensation control signal, a voltage input control signal, and a reset signal according to the scan signal or the pull-up node signal,
  • the compensation control signal, the voltage input control signal, and the reset signal are input to the pixel drive circuit, the compensation control signal is used in the compensation phase of the pixel drive circuit, and the voltage input control signal is used in the pixel drive circuit.
  • the reset signal is used in the reset stage of the pixel drive circuit;
  • the trigger driving circuit is also used for receiving a clock signal output by the data driving circuit and generating a light emitting control signal to be input to the pixel driving circuit, and the light emitting control signal is used in the light emitting phase of the pixel driving circuit.
  • the trigger driving circuit includes a pull-up control module, a pull-up module, a node pull-down module, and an output pull-down module;
  • the pull-up control module, the node pull-down module, and the pull-up module are connected to a first node, and the output pull-down module is respectively connected to the pull-up module and the node pull-down module;
  • the pull-up control module is used to input the clock signal
  • the node pull-down module is used to input the scan signal or the pull-up node signal
  • the pull-up module is used to output a trigger drive signal through a trigger drive signal line
  • the trigger driving signal includes the compensation control signal, the voltage input control signal, the reset signal and the light emission control signal.
  • the pull-up control module includes a sixth transistor; the control terminal of the sixth transistor is used to input the clock signal, the first path terminal of the sixth transistor is connected to a high potential, and the The second path end is connected to the first node.
  • the node pull-down module includes a fifth transistor; the control terminal of the fifth transistor is used to input the scan signal or the pull-up node signal output by the scan driving circuit, and the fifth transistor A path end is connected to the first node, and a second path end of the fifth transistor is connected to a low potential.
  • the pull-up module includes a seventh transistor; a control terminal of the seventh transistor is connected to a first node, a first path end of the seventh transistor is connected to a high potential, and a second path end of the seventh transistor For outputting the trigger driving signal through the trigger driving signal line.
  • the output pull-down module includes a ninth transistor and a tenth transistor; the control terminal of the ninth transistor and the control terminal of the tenth transistor are connected and connected to the node pull-down module, and the first transistor of the tenth transistor The pass end is connected to the trigger drive signal line of the pull-up module, the second pass end of the tenth transistor is connected to the first pass end of the ninth transistor, and the second pass end of the ninth transistor is connected to a low potential.
  • the trigger drive circuit further includes an eighth transistor; the control terminal of the eighth transistor is connected to the trigger drive signal line of the pull-up module, and the first path terminal of the eighth transistor is connected to the tenth transistor respectively.
  • the second path end of the ninth transistor is connected to the first path end of the ninth transistor, and the second path end of the eighth transistor is connected to a high potential.
  • the trigger driving circuit further includes a clearing module;
  • the clearing module includes an eleventh transistor and a twelfth transistor; the control terminal of the eleventh transistor is used to input a clear signal, and the eleventh transistor
  • the first path end is connected to the trigger drive signal line of the pull-up module, the second path end of the eleventh transistor is connected to a low potential; the control end of the twelfth transistor is used to input a clear signal, and the The first path end of the twelfth transistor is connected to the first node, and the second path end of the twelfth transistor is connected to a low potential.
  • the trigger driving circuit further includes a first capacitor; the first capacitors are respectively connected to the first node and the trigger driving signal line.
  • the application also discloses a display device, which includes the above-mentioned display device.
  • the display device can be any of the following: mobile phones, tablets, laptops, monitors, and TV products.
  • this application uses a trigger drive circuit with a general internal compensation circuit, which can effectively compensate for the threshold voltage of general process unevenness, and can also compensate for the threshold voltage offset caused by the aging of the OLED drive transistor, which can effectively solve the OLED
  • the uneven panel brightness caused by the uneven display color (mura) and the aging of the driving transistor reduces the layout area required for the trigger driving circuit, which can effectively reduce the panel frame and drive the market demand for narrow frame.
  • FIG. 1 is a schematic diagram of a conventional OLED pixel driving circuit
  • FIG. 2 is a schematic diagram of the trigger driving circuit of this application.
  • Figure 3 is a timing diagram of the trigger driving signal required by the OLED compensation circuit
  • Figure 4 is a schematic diagram of the structure of an existing compensation circuit
  • FIG. 5 is a schematic structural diagram of an embodiment of a display device of this application.
  • FIG. 6 is a schematic structural diagram of another embodiment of a display device of this application.
  • FIG. 7 is a schematic structural diagram of still another embodiment of a display device of this application.
  • FIG. 8 is a schematic structural diagram of another embodiment of a display device of this application.
  • Fig. 2 is a schematic diagram of the trigger driving circuit of this application.
  • a trigger driving circuit is used to provide a signal for a pixel driving circuit, and the trigger driving circuit is used to generate a compensation control signal and a voltage according to the received scan signal Gn or a pull-up node signal output by the scan driving circuit.
  • Input control signal and reset signal the compensation control signal is used in the compensation phase of the pixel drive circuit, the voltage input control signal is used in the voltage input phase of the pixel drive circuit, and the reset signal is used in the pixel drive circuit
  • the trigger driving circuit is also used to generate a light emitting control signal for the light emitting phase of the pixel driving circuit according to the received clock signal CKm(+n).
  • the trigger driving circuit includes a pull-up control module 01, a pull-up module 02, a node pull-down module 03, and an output pull-down module 04; the pull-up control module 01, node pull-down module 03, and pull-up module 02 Connected to the first node A, the output pull-down module 04 is respectively connected to the pull-up module 01 and the node pull-down 03 module; the pull-up control module 01 inputs the clock signal CK; the node pull-down module 03 inputs The scan signal Gn or the pull-up node signal NetAn; the pull-up module 02 outputs a trigger drive signal En through a trigger drive signal line; the trigger drive signal En includes the compensation control signal and the voltage input control signal , The reset signal and the light emission control signal.
  • the pull-up control module 01 includes a sixth transistor T6; the control terminal of the sixth transistor T6 inputs the clock signal CKm(+n), and the first pass terminal of the sixth transistor T6 The high potential VGH is connected, and the second path end of the sixth transistor T6 is connected to the first node A.
  • the node pull-down module 03 includes a fifth transistor T5; the control end of the fifth transistor T5 inputs the scan signal Gn or the pull-up node signal NetAn output by the scan driving circuit, and the first of the fifth transistor T5 The path end is connected to the first node A, and the second path end of the fifth transistor T5 is connected to a low potential VSS.
  • the pull-up module 02 includes a seventh transistor T7; the control end of the seventh transistor T7 is connected to the first node A, the first path end of the seventh transistor T7 is connected to the high potential VGH, and the The second path end outputs the trigger driving signal En through the trigger driving signal line.
  • the output pull-down module 04 includes a ninth transistor T9 and a tenth transistor T10; the control terminal of the ninth transistor T9 and the control terminal of the tenth transistor T10 are connected and connected to the node pull-down module 03 (that is, the The control terminal of the nine transistor T9 and the control terminal of the tenth transistor T10 input the scan signal Gn or the pull-up node signal NetAn) output by the scan driving circuit, and the first path end of the tenth transistor T10 is connected to the upper Pull the trigger drive signal line of the module 02, the second path end of the tenth transistor T10 is connected to the first path end of the ninth transistor T9, and the second path end of the ninth transistor T9 is connected to the low potential VSS.
  • the node pull-down module 03 that is, the The control terminal of the nine transistor T9 and the control terminal of the tenth transistor T10 input the scan signal Gn or the pull-up node signal NetAn
  • the first path end of the tenth transistor T10 is connected to the
  • the trigger driving circuit further includes an eighth transistor T8; the control end of the eighth transistor T8 is connected to the trigger driving signal line of the pull-up module 02, and the first path end of the eighth transistor T8 is connected to the tenth
  • the second path end of the transistor T10 is connected to the first path end of the ninth transistor T9, and the second path end of the eighth transistor T8 is connected to the high potential VGH.
  • the trigger driving circuit also includes a clearing module 05; the clearing module 05 includes an eleventh transistor T11 and a twelfth transistor T12; the control terminal of the eleventh transistor T11 inputs a clear signal CLRE, and the eleventh transistor
  • the first path end of T11 is connected to the trigger drive signal line of the pull-up module 02, the second path end of the eleventh transistor T11 is connected to a low potential VSS; the control end of the twelfth transistor T12 inputs a clear signal CLRE, the first path end of the twelfth transistor T12 is connected to the first node A, and the second path end of the twelfth transistor T12 is connected to a low potential VSS.
  • the trigger driving circuit further includes a first capacitor C; the first capacitor C is respectively connected to the first node A and the trigger driving signal line.
  • This capacitor is mainly used to couple the voltage of the first node A when the pull-up module 02 starts to transmit a high potential to the output of the trigger drive signal line, so that the gate voltage of the seventh transistor T7 can be pulled up, driving the Vgs>Vth of the pull-up module 02 , Can make the trigger drive signal line output trigger drive signal voltage can reach high potential.
  • the trigger drive circuit development of the present application is mainly to support the OLED internal compensation circuit to compensate for the VTH voltage requirements of its DTFT, and to provide the timing of the trigger drive signal required for the four stages of compensation.
  • the four stages of compensation Is: 1Reset period (Reset), pixel voltage reset, 2Compensate period (Compensate), compensation threshold voltage, 3Voltage input period (Data in), picture control voltage, 4Emitting period (Emitting), display phase.
  • FIG 4 is a schematic diagram of the internal compensation circuit of an OLED in the prior art.
  • the EOA that the compensation circuit STFT (TFT5) of the general OLED needs to receive is a high-potential VGH signal when the OLED is in the light-emitting phase, so the sixth part of the drive circuit is triggered
  • the control terminal of the transistor T6 receives the clock signal CKm to drive the first node A to charge a high potential to turn on the seventh transistor T7 of the pull-up module 03 in the trigger drive circuit, and output a high-level trigger drive signal En through the trigger drive signal line.
  • the trigger drive signal En outputs a high potential while the first capacitor in the coupling circuit drives the voltage of the first node A up, which drives the final trigger drive signal line to transmit the VGH potential to the control terminal of the compensation circuit STFT (TFT5).
  • the compensation circuit STFT When the compensation circuit is in the compensation stage, its compensation circuit STFT needs to receive the low potential VGL signal to prevent the OLED from emitting light, so the high potential of the pull-up control node netA (the voltage of the GDM pull-up control module) in the original GDM circuit is transmitted to The fifth transistor T5, the ninth transistor T9, and the tenth transistor T10 of the trigger driving circuit start to pull down the potential of the first node A and trigger the potential of the driving signal line to the low potential VGL, driving the compensation circuit STFT not to open, preventing the compensation phase from being driven The current in the voltage input stage is transmitted to the OLED, causing the screen to display abnormally.
  • the netA voltage also returns to the low potential VGL at this time.
  • the sixth transistor T6 that triggers the drive circuit starts to transmit the high potential to the first node A again, so the same principle Drive the potential at the trigger drive signal line to return to the high potential VGH, and drive the OLED to light up normally.
  • this application preferably adds T8, T9, and T10, which takes into account both the pull-down of the trigger drive signal En voltage and the maintenance of the high voltage at the trigger drive signal En point.
  • the main component of the anti-leakage architecture is the first Eight transistors T8, when the drive signal En is triggered to output a high potential VGH, the eighth transistor T8 also transmits a high potential VGH to the second node B at the same time, so the switching voltage of the tenth transistor T10 is Vgs ⁇ VTH to prevent triggering of the drive signal.
  • the elapse of the voltage at the En point drives to increase the stability of the output voltage of the trigger drive circuit, and the OLED can display the picture normally.
  • the application preferably adds two auxiliary transistors, namely the eleventh transistor T11 and the twelfth transistor T12, and the first of the eleventh transistor T11 and the twelfth transistor T12.
  • the path ends are respectively connected to the first node A of the circuit and the trigger drive signal line, and the second path ends are connected to the low potential VSS when the OLED display screen is turned off.
  • the first path end and the second path end are turned on, and the residual charge of the original circuit is discharged to the low potential VSS, which increases the overall life of the circuit transistor.
  • This application is output to this application through the scanning signal Gn or netA point (GDM pull-up control module voltage) output by the existing GDM circuit, which can effectively use the original GDM circuit output signal and periodic clock signal to achieve the trigger drive required for internal compensation Signal, and can effectively reduce the required TFT devices. It should be noted that as long as the basic GDM circuit is used with the trigger driving circuit of the present application, the trigger driving signal required in the internal compensation circuit can be generated.
  • the present application also discloses a display device.
  • the display device includes a scan drive circuit, a pixel drive circuit, a data drive circuit, and the above trigger drive circuit; the trigger drive circuit is connected to the scan drive circuit, the pixel drive circuit, and the data drive circuit respectively. Connection; the trigger drive circuit receives the scan signal or pull-up node signal output by the scan drive circuit and generates a compensation control signal, a voltage input control signal, and a reset signal for input to the pixel drive circuit; the trigger drive circuit also receives The clock signal output by the data driving circuit generates a light emission control signal and is input to the pixel driving circuit.
  • FIG. 5 is a schematic structural diagram of an embodiment of a display device of the present application.
  • the display device includes two scan driving circuits, a pixel driving circuit, a data driving circuit, and two trigger driving circuits described above.
  • the data driving circuit is located at one end of the display panel, the pixel driving circuit is located in the pixel area of the display panel, and it includes a compensation circuit and a driving TFT and a switching TFT connected to the compensation circuit;
  • the scanning driving circuit Are located on both sides of the display panel, the trigger drive circuit is also located on both sides of the display panel, the scan drive circuit and the trigger drive circuit are independent circuit modules; the trigger drive circuit and the scan
  • the driving circuit, the pixel driving circuit, and the data driving circuit are electrically connected;
  • the trigger driving circuit receives the scan signal or the pull-up node signal output by the scan driving circuit and generates a compensation control signal, a voltage input control signal, and a reset signal to the pixel Drive circuit;
  • the trigger drive circuit also receives the clock signal output
  • FIG. 6 is a schematic structural diagram of another embodiment of the display device of this application.
  • the display device includes two scan driving circuits, a pixel driving circuit, a data driving circuit, and two trigger driving circuits mentioned above.
  • the two scan drive circuits are respectively located on both sides of the display panel, the trigger drive circuit is also located on both sides of the display panel, the scan drive circuit and the trigger drive circuit on each side are integrated circuit modules;
  • the trigger drive circuit Are respectively electrically connected to the scan driving circuit, pixel driving circuit, and data driving circuit;
  • the trigger driving circuit receives the scan signal or pull-up node signal output by the scan driving circuit and generates a compensation control signal, a voltage input control signal, and a reset
  • the setting signal is input to the pixel drive circuit;
  • the trigger drive circuit also receives the clock signal output by the data drive circuit and generates a light emission control signal that is input to the pixel drive circuit.
  • FIG. 7 is a schematic structural diagram of another embodiment of a display device of this application.
  • the display device includes a scan driving circuit, a pixel driving circuit, a data driving circuit, and a trigger driving circuit.
  • the scan driving circuit and The trigger driving circuit is an integrated circuit module, which is located on the left side of the display panel (the same can also be located on the right side), and the trigger driving circuit is electrically connected to the scan driving circuit, the pixel driving circuit, and the data driving circuit, respectively;
  • the trigger driving circuit receives the scan signal or the pull-up node signal output by the scan driving circuit and generates a compensation control signal, a voltage input control signal, and a reset signal to input to the pixel driving circuit; the trigger driving circuit also receives the data
  • the clock signal output by the driving circuit and the light emission control signal are generated and input to the pixel driving circuit.
  • FIG. 8 is a schematic structural diagram of another embodiment of a display device of this application.
  • the display device includes a scan driving circuit, a pixel driving circuit, a data driving circuit, and a trigger driving circuit.
  • the scan driving circuit is located in On the left side of the display panel, the trigger drive circuit is located on the right side of the display panel, the scan drive circuit and the trigger drive circuit are independent circuit modules; the trigger drive circuit is connected to the scan drive circuit, the pixel The drive circuit and the data drive circuit are electrically connected; the trigger drive circuit receives the scan signal or the pull-up node signal output by the scan drive circuit and generates a compensation control signal, a voltage input control signal, and a reset signal for input to the pixel drive circuit; The trigger driving circuit also receives a clock signal output by the data driving circuit and generates a light emission control signal to be input to the pixel driving circuit.
  • the positions of the scan drive circuit and the trigger drive circuit in this embodiment can also be exchanged, that is, the scan drive circuit is located on the right side of the display panel, and the trigger drive circuit is located on the left side of the display panel, which is not limited in this application.
  • the trigger driving circuit of the present application utilizes the signal of the existing scan driving circuit to generate a trigger driving signal and provide it to the pixel driving circuit without additional wiring, which effectively reduces the size of the panel frame.
  • the present application also provides a display device, including the above-mentioned display device.
  • the display device can be any of the following: mobile phones, tablets, laptops, monitors, and TV products.

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  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

La présente invention concerne un circuit d'attaque de déclenchement qui est utilisé pour fournir un signal pour un circuit d'attaque de pixel. Le circuit d'attaque de déclenchement sert à générer un signal de commande de compensation, un signal de commande d'entrée de tension et un signal de réinitialisation en fonction d'un signal de balayage reçu (Gn) ou d'un signal de noeud d'excursion haute (NetAn) émis par un circuit d'attaque de balayage. Le signal de commande de compensation est utilisé pour une période de compensation (Compenser) du circuit d'attaque de pixel, le signal de commande d'entrée de tension est utilisé pour une période de temps d'entrée de tension (Entrée de données) du circuit d'attaque de pixel, et le signal de réinitialisation est utilisé pour une période de temps de réinitialisation (Réinitialisation) du circuit d'attaque de pixel. Le circuit d'attaque de déclenchement est en outre utilisé pour générer, selon un signal d'horloge reçu (CKm(+n)), un signal de commande d'émission de lumière utilisé pour une période de temps d'émission de lumière (Émission) du circuit d'attaque de pixel. Le circuit d'attaque de déclenchement décrit génère un signal de commande de déclenchement (En) en utilisant un signal provenant d'un circuit d'attaque de balayage existant et il fournit le signal de commande de déclenchement (En) à un circuit d'attaque de pixel sans nécessiter une ligne supplémentaire, ce qui permet de réduire efficacement la taille de la lunette d'un panneau.
PCT/CN2020/086619 2019-08-08 2020-04-24 Circuit d'attaque de déclenchement et dispositif d'affichage WO2021022838A1 (fr)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115035844A (zh) * 2022-06-27 2022-09-09 厦门天马微电子有限公司 像素电路及其驱动方法、显示面板
CN115862533A (zh) * 2021-09-27 2023-03-28 深圳市柔宇科技股份有限公司 一种发光驱动电路、像素电路、显示面板及终端设备
CN116072077A (zh) * 2022-11-29 2023-05-05 厦门天马显示科技有限公司 像素驱动电路、阵列基板及显示装置

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110599959B (zh) * 2019-08-08 2020-11-06 南京中电熊猫液晶显示科技有限公司 触发驱动电路及显示装置
CN111312175B (zh) * 2020-04-22 2020-12-25 南京中电熊猫液晶显示科技有限公司 触发驱动电路及有机发光显示装置
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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1917016A (zh) * 2005-08-17 2007-02-21 三星Sdi株式会社 有机发光显示设备及其发射控制驱动器和逻辑或电路
CN102201194A (zh) * 2011-04-28 2011-09-28 友达光电股份有限公司 移位寄存器电路
CN104900184A (zh) * 2015-05-21 2015-09-09 北京大学深圳研究生院 一种有机发光二极管面板、栅极驱动电路及其单元
CN106782337A (zh) * 2017-02-14 2017-05-31 京东方科技集团股份有限公司 移位寄存器单元、栅极驱动电路及有机电致发光显示面板
KR20170076886A (ko) * 2015-12-24 2017-07-05 엘지디스플레이 주식회사 유기발광소자 표시장치 및 이의 스캔드라이버
CN107784977A (zh) * 2017-12-11 2018-03-09 京东方科技集团股份有限公司 移位寄存器单元及其驱动方法、栅极驱动电路、显示装置
CN110599959A (zh) * 2019-08-08 2019-12-20 南京中电熊猫平板显示科技有限公司 触发驱动电路及显示装置

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009276744A (ja) * 2008-02-13 2009-11-26 Toshiba Mobile Display Co Ltd Ｅｌ表示装置
CN102857207B (zh) * 2012-07-25 2015-02-18 京东方科技集团股份有限公司 移位寄存器单元及其驱动方法、栅极驱动装置和显示装置
JP6110177B2 (ja) * 2013-03-27 2017-04-05 京セラ株式会社 シフトレジスタ回路および画像表示装置
CN103943081A (zh) * 2014-03-14 2014-07-23 京东方科技集团股份有限公司 移位寄存器、其制作方法、栅线集成驱动电路及相关装置
CN104299594B (zh) * 2014-11-07 2017-02-15 京东方科技集团股份有限公司 移位寄存器单元、栅极驱动电路及显示装置
CN104505049B (zh) * 2014-12-31 2017-04-19 深圳市华星光电技术有限公司 一种栅极驱动电路
CN104517584A (zh) * 2015-01-20 2015-04-15 京东方科技集团股份有限公司 一种移位寄存单元、栅极驱动电路、显示面板和显示装置
CN104575436B (zh) * 2015-02-06 2017-04-05 京东方科技集团股份有限公司 移位寄存器单元、栅极驱动电路及显示装置
KR102287194B1 (ko) * 2015-03-30 2021-08-09 삼성디스플레이 주식회사 게이트 구동회로 및 이를 포함하는 표시 장치
TWI574276B (zh) * 2015-12-23 2017-03-11 友達光電股份有限公司 移位暫存器及其控制方法
JP6298491B2 (ja) * 2016-05-31 2018-03-20 株式会社半導体エネルギー研究所 表示装置
KR20180057975A (ko) * 2016-11-23 2018-05-31 엘지디스플레이 주식회사 쉬프트 레지스터, 이를 포함한 영상 표시장치 및 그 구동방법
CN108172170B (zh) * 2017-11-30 2019-12-13 南京中电熊猫平板显示科技有限公司 一种触发驱动电路及有机发光显示装置

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1917016A (zh) * 2005-08-17 2007-02-21 三星Sdi株式会社 有机发光显示设备及其发射控制驱动器和逻辑或电路
CN102201194A (zh) * 2011-04-28 2011-09-28 友达光电股份有限公司 移位寄存器电路
CN104900184A (zh) * 2015-05-21 2015-09-09 北京大学深圳研究生院 一种有机发光二极管面板、栅极驱动电路及其单元
KR20170076886A (ko) * 2015-12-24 2017-07-05 엘지디스플레이 주식회사 유기발광소자 표시장치 및 이의 스캔드라이버
CN106782337A (zh) * 2017-02-14 2017-05-31 京东方科技集团股份有限公司 移位寄存器单元、栅极驱动电路及有机电致发光显示面板
CN107784977A (zh) * 2017-12-11 2018-03-09 京东方科技集团股份有限公司 移位寄存器单元及其驱动方法、栅极驱动电路、显示装置
CN110599959A (zh) * 2019-08-08 2019-12-20 南京中电熊猫平板显示科技有限公司 触发驱动电路及显示装置

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115862533A (zh) * 2021-09-27 2023-03-28 深圳市柔宇科技股份有限公司 一种发光驱动电路、像素电路、显示面板及终端设备
CN115035844A (zh) * 2022-06-27 2022-09-09 厦门天马微电子有限公司 像素电路及其驱动方法、显示面板
CN116072077A (zh) * 2022-11-29 2023-05-05 厦门天马显示科技有限公司 像素驱动电路、阵列基板及显示装置

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