Display panel, manufacturing method thereof, and display device
AssigneeWuhan China Star Optoelectronics Technology Co., Ltd.
InventorMang ZHAO
Life of this patent
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Abstract
A gate driver on array (GOA) device and a display panel are proposed. In the present application, by adding a twenty-first transistor and a first control clock terminal electrically connected to the twenty-first transistor in a forward-reverse scan module to control potentials of a first node and a third node, a leakage of the first node during operation can be reduced, thereby improving reliability of the GOA device.
Claims18
A gate driver on array (GOA) device, comprising multiple cascaded GOA units, with any stage of the GOA units comprising a forward-reverse scan module, an output module, a pull-down module, and a function control module;
- wherein the forward-reverse scan module receives a scan driving signal of a previous stage, a forward scan signal, a scan driving signal of a next stage, a reverse scan signal, and a constant-voltage low-level signal, and is electrically connected to a first control clock terminal, a first node, and a second node, configured to output the forward scan signal to the first node, or configured to output the reverse scan signal to the first node, and outputs the constant-voltage low-level signal to the second node under control of a potential of the first node;
- wherein the output module receives the constant-voltage low-level signal and a constant-voltage high-level signal, and is electrically connected to the first node and a third control clock terminal, configured to output a scan driving signal of a current stage;
- wherein the pull-down module receives the constant-voltage low-level signal, the forward scan signal, the reverse scan signal, and the constant-voltage high-level signal, and is electrically connected to a second control clock terminal, a fourth control clock terminal, the first node, and the scan driving signal of the current stage, configured to pull down the potential of the first node and a potential of the scan driving signal of the current stage to a potential of the constant-voltage low-level signal;
- wherein the function control module receives a first function control signal and a second function control signal, and is electrically connected to the first node, the second node, and the scan driving signal of the current stage, configured to realize a turn on function and a turn off function of the GOA device on all scan driving signals;
- and
- wherein the forward scan signal and the reverse scan signal are both direct current (DC) power sources, and a potential of the forward scan signal is opposite to a potential of the reverse scan signal.
A display panel, comprising a gate driver on array (GOA) device and a functional display layer disposed on the GOA device, wherein the GOA device comprises multiple cascaded GOA units, with any stage of the GOA units comprising a forward-reverse scan module, an output module, a pull-down module, and a function control module;
- wherein the forward-reverse scan module receives a scan driving signal of a previous stage, a forward scan signal, a scan driving signal of a next stage, a reverse scan signal, and a constant-voltage low-level signal, and is electrically connected to a first control clock terminal, a first node, and a second node, configured to output the forward scan signal to the first node, or configured to output the reverse scan signal to the first node, and outputting the constant-voltage low-level signal to the second node under control of a potential of the first node;
- wherein the output module receives the constant-voltage low-level signal and a constant-voltage high-level signal, and is electrically connected to the first node and a third control clock terminal, configured to output a scan driving signal of a current stage;
- wherein the pull-down module receives the constant-voltage low-level signal, the forward scan signal, the reverse scan signal, and the constant-voltage high-level signal, and is electrically connected to a second control clock terminal, a fourth control clock terminal, the first node, and the scan driving signal of the current stage, configured to pull down the potential of the first node and a potential of the scan driving signal of the current stage to a potential of the constant-voltage low-level signal;
- wherein the function control module receives a first function control signal and a second function control signal, and is electrically connected to the first node, the second node, and the scan driving signal of the current stage, configured to realize a turn on function and a turn off function of the GOA device on all scan driving signals;
- and
- wherein the forward scan signal and the reverse scan signal are both direct current (DC) power sources, and a potential of the forward scan signal is opposite to a potential of the reverse scan signal.
Dependencies are inferred from the claim text.