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CN-121999732-A - Display panel, display device and display driving method

CN121999732ACN 121999732 ACN121999732 ACN 121999732ACN-121999732-A

Abstract

The application discloses a display panel, a display device and a display driving method, wherein a grid driving module comprises a plurality of grid driving circuits. In a first period of the power-on period of the display panel, the first control unit of at least one gate driving circuit is configured to transmit a corresponding start signal to a first node in the gate driving circuit of the present stage, and the second control unit is configured to control a current path between the first power supply terminal and a second node of the gate driving circuit of the present stage according to the signal of the first node, so that the potential of the first node is stabilized by the start signal corresponding to the gate driving circuit, and the potential of the second node is stabilized by the first power supply signal supplied by the first power supply terminal, thereby being beneficial to reducing the risk that a protection mechanism is triggered, and further reducing the probability that the display panel cannot be powered on.

Inventors

  • ZHANG HUANXI

Assignees

  • 武汉华星光电半导体显示技术有限公司

Dates

Publication Date
20260508
Application Date
20260224

Claims (15)

  1. 1. A display panel, comprising a gate driving module, wherein the gate driving module comprises a plurality of gate driving circuits, and at least one gate driving circuit comprises: The first control unit is electrically connected with a first node of the gate driving circuit of the current stage and is configured to control the potential of the first node; A second control unit electrically connected to the second node and the first node of the gate driving circuit, and configured to form a current path between the second node and the first and second power supply terminals according to the potential of the first node The output unit is electrically connected with the first node and the second node and is configured to output a grid control signal; wherein, in a first period in the power-on period of the display panel, the first control unit of at least one gate driving circuit is configured to transmit a corresponding start signal to the first node, and the second control unit is configured to control the first power terminal and the second node to form a current path according to the signal of the first node.
  2. 2. The display panel according to claim 1, wherein the first control unit includes: The first subunit is electrically connected with the first node; the second subunit is electrically connected with the first node, the second node and the first power supply end; Wherein, in the first period, the first subunit is configured to transmit the corresponding start signal to the first node according to a corresponding first clock signal, and the second subunit is configured to disconnect a current path between the first power supply terminal and the first node according to a signal of the second node.
  3. 3. The display panel of claim 2, wherein the display panel comprises, The first subunit includes a first transistor, where the first transistor includes a control terminal configured to receive the corresponding first clock signal, a first source-drain terminal configured to receive the corresponding start signal, and a second source-drain terminal electrically connected to the first node; The second subunit comprises a second transistor, wherein the second transistor comprises a control end electrically connected with the second node, a first source-drain end electrically connected with the first power end and a second source-drain end electrically connected with the first node; wherein the second transistor is an indium gallium zinc oxide transistor.
  4. 4. A display panel according to any one of claims 1 to 3, wherein, in the first period, the output unit is configured to communicate a current path between the second power supply terminal and the signal output terminal of the gate driving circuit of the present stage according to the signal of the second node.
  5. 5. The display panel of claim 4, wherein the output unit comprises: A first output subunit electrically connected with the first node and configured to control signal transmission between the first signal line and the signal output end of the gate driving circuit according to the signal of the first node, and The second output subunit is electrically connected with the second node and is configured to control signal transmission between the second power supply end and the signal output end according to the signal of the second node; Wherein, during the first period, the first output subunit is configured to disconnect a current path between the first signal line and the signal output terminal, and the second output subunit is configured to communicate a current path between the second power supply terminal and the signal output terminal.
  6. 6. Thedisplaypanelaccordingtoclaim5,whereininthecascadeconnectionofthepluralityofgatedrivingcircuits,astartsignalcorrespondingtothegatedrivingcircuitoftheM-thstageisaframestartsignalorthegatecontrolsignaloutputtedfromthegatedrivingcircuitoftheM-A-thstage,Misgreaterthanorequalto1,Aisgreaterthanorequalto1,andM-Aisgreaterthan0; wherein, in the first period, the first node of each of the plurality of gate driving circuits in cascade is configured to receive the corresponding start signal, the second node is configured to receive a first power signal supplied from the first power terminal, and the signal output terminal is configured to receive a second power signal supplied from the second power terminal.
  7. 7. The display panel of claim 5, wherein the plurality of gate driving circuits comprises a plurality of cascaded first gate driving circuits and a plurality of cascaded second gate driving circuits, each of the first gate driving circuits configured to output a first gate control signal, each of the second gate driving circuits configured to output a second gate control signal; wherein an active level of the first gate control signal is one of a low level and a high level, and an active level of the second gate control signal is the other of the low level and the high level.
  8. 8. The display panel according to claim 7, wherein an active level of each of the first gate control signals is a high level, and an active level of each of the second gate control signals is a low level; the first signal line corresponding to the first gate driving circuit is electrically connected with the first power supply end, and the first signal line corresponding to the second gate driving circuit is configured to transmit a corresponding second clock signal.
  9. 9. A display panel according to any one of claims 1 to 3, wherein the second control unit comprises: the third subunit is electrically connected with the first node, the second node and the first power supply end; a fourth subunit electrically connected to the first node, the second node, and the second power supply terminal; Wherein, during the first period, the third subunit is configured to communicate a current path between the first power supply terminal and the second node according to the signal of the first node, and the fourth subunit is configured to disconnect a current path between the second power supply terminal and the second node according to the signal of the first node.
  10. 10. A display panel according to any one of claims 2 to 3, wherein in a second period following the first period in the power-on period, the first sub-unit in at least one gate driving circuit disconnects a current path between a start signal line transmitting the start signal and the first node according to the corresponding first clock signal.
  11. 11. The display panel according to claim 10, wherein at least one of the clock signal and the start signal corresponding to at least one of the gate driving circuits has a level jump in a third period after the second period in the power-on period.
  12. 12. A display device, comprising: the display panel according to any one of claims 1 to 11, and The time sequence controller is electrically connected with the display panel and is configured to transmit the corresponding starting signal to at least one grid driving circuit.
  13. 13. The display driving method is characterized by comprising a display panel, wherein the display panel comprises a grid driving module, the grid driving module comprises a plurality of grid driving circuits, at least one grid driving circuit comprises a first control unit, a second control unit and an output unit, the output unit is electrically connected with a first node and a second node of the grid driving circuit, the first control unit is electrically connected with a corresponding starting signal wire and the first node of the grid driving circuit, and the second control unit is electrically connected with a first power end, a second node of the grid driving circuit and the first node; The display driving method includes: And in a first period of the power-on period of the display panel, controlling the first control unit in at least one grid driving circuit to be communicated with a current path between the first node and the corresponding starting signal line, so that the second control unit is communicated with the current path between the second node and the first power end according to the signal of the first node, and the second node is enabled to receive a first power signal supplied by the first power end.
  14. 14. The display driving method according to claim 13, wherein the output unit of at least one gate driving circuit is electrically connected to a second power supply terminal and a signal output terminal of the gate driving circuit of the present stage; the display driving method further includes: and in the first period, controlling at least one output unit in the grid driving circuit to communicate a current path between a signal output end and a second power end according to the signal of the second node.
  15. 15. The display driving method according to claim 13, wherein the display driving method further comprises: and in a second period after the first period in the power-on period, controlling the first control unit in at least one gate driving circuit to disconnect a current path between the corresponding start signal line and the first node so as to stop the first node from receiving the corresponding start signal.

Description

Display panel, display device and display driving method Technical Field The present application relates to the field of display technologies, and in particular, to a display panel, a display device, and a display driving method. Background In the grid driving circuit, the forward bias stress effect of part of transistors received for a long time can reduce the writing capability of the transistors, so that two power supply signals are easy to cross over at the same node, the potential stability problem of the node is caused, and a protection mechanism is easy to trigger, so that the display panel cannot be electrified, and the normal operation of the display panel is influenced. Disclosure of Invention The application provides a display panel, a display device and a display driving method, which are used for improving the potential stability of nodes in a grid driving circuit so as to reduce the probability that the display panel cannot be electrified. In order to achieve the above objective, the present application provides a display panel, which includes a gate driving module, wherein the gate driving module includes a plurality of gate driving circuits, and at least one gate driving circuit includes a first control unit, a second control unit, and an output unit. The first control unit is electrically connected with a first node of the gate driving circuit of the current stage and is configured to control the potential of the first node. The second control unit is electrically connected with the second node and the first node of the gate driving circuit of the current stage, and is configured to enable the second node to form a current path between the first power end and the second power end in a time-sharing manner according to the potential of the first node. The output unit is electrically connected with the first node and the second node and is configured to output a grid control signal. The first control unit of the at least one gate driving circuit is configured to transmit a corresponding start signal to the first node in a first period of the power-on period of the display panel, and the second control unit is configured to control a current path between the first power supply terminal and the second node according to the signal of the first node. The application also provides a display device comprising any one of the display panels and the time sequence controller. The time schedule controller is electrically connected with the display panel and is configured to transmit a corresponding starting signal to at least one grid driving circuit. The application also provides a display driving method, which is used for driving the display panel, the display panel comprises a grid driving module, the grid driving module comprises a plurality of grid driving circuits, at least one grid driving circuit comprises a first control unit, a second control unit and an output unit, the output unit is electrically connected with a first node and a second node of the grid driving circuit of the current stage, the first control unit is electrically connected with a corresponding starting signal line and the first node of the grid driving circuit of the current stage, and the second control unit is electrically connected with a first power end, the second node and the first node of the grid driving circuit of the current stage. The display driving method comprises the steps of controlling a first control unit in at least one grid driving circuit to be communicated with a current path between a first node and a corresponding starting signal line in a first period of a power-on period of the display panel, so that the second control unit is communicated with the current path between a second node and the first power end according to signals of the first node, and the second node receives first power signals supplied by the first power end. According to the technical scheme, the first control unit of the at least one grid driving circuit transmits the corresponding starting signal to the first node in the first period of the power-on period of the display panel, the second control unit controls the first power end and the second node to form a current path according to the signal of the first node so as to stabilize the potential of the first node by using the starting signal corresponding to the grid driving circuit and stabilize the potential of the second node by using the first power signal supplied by the first power end, so that the risk that a protection mechanism is triggered is reduced, and the probability that the display panel cannot be powered on is reduced. Drawings In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present