Gate driving circuit and driving method thereof, display device and control method thereof
A gate drive circuit and gate drive technology, applied in static indicators, digital memory information, instruments, etc., can solve the problems of poor brightness uniformity of display panels, and achieve the effect of improving brightness uniformity
Active Publication Date: 2019-05-03
BOE TECH GRP CO LTD +1
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- Application Information
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Problems solved by technology
[0005] The invention provides a gate driving circuit and its driving method, a display device and its control method, which can solve the problem of poor brightness uniformity of the display panel in the related art
Method used
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[0052] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0053] As known by the inventors, the power supply terminal for providing power signals to the pixel circuits in the display panel is usually arranged at one end (eg, the lower end) of the display panel. When the power signal provided by the power supply terminal is loaded on the pixel circuit, the wire used to transmit the power signal will pass through the metal layer resistor network in the display area, and a mutual capacitance will be formed between the metal layer resistor network and the wire, The voltage of the power signal transmitted on the wire will be attenuated to a certain extent, and the degree of attenuation of the voltage is positively related to the distance from the corresponding pixel circuit to the power supply term...
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The invention discloses a grid driving circuit and a driving method thereof, a display device and a control method thereof, and belongs to the technical field of display. The gate driving circuit comprises a plurality of cascaded shift register units, wherein each shift register unit is connected with a pixel circuit in a display panel; The output module of each shift register unit comprises a driving transistor used for driving the output end to output a gate driving signal, and the output end is used for providing the gate driving signal for a pixel circuit connected with the shift registerunit where the output end is located; Each pixel circuit is also connected with a first power supply end, and each pixel circuit is used for emitting light under the control of a grid driving signal from the corresponding shift register unit and a first power supply signal from the first power supply end; The width-to-length ratio of the conductive channel of each driving transistor is in negativecorrelation with a target distance, and the target distance is the distance from the corresponding pixel circuit to the first power supply end. The brightness uniformity of the display panel is improved.
Description
technical field [0001] The present invention relates to the field of display technology, in particular to a gate driving circuit and a driving method thereof, a display device and a control method thereof. Background technique [0002] A display device generally includes: a display panel and a gate driving circuit for driving pixel units in the display panel to display images. The display panel includes a plurality of pixel units arranged in an array, and each pixel unit is provided with a pixel circuit. The gate driving circuit includes: a plurality of cascaded shift register units, and the plurality of shift register units are used to drive different pixel units to emit light. Wherein, by applying a power supply signal and a gate driving signal output by the shift register unit to the pixel circuit, the pixel unit where the pixel circuit is located can be controlled to emit light. And the voltage of the power signal loaded on the pixel circuit is used to determine the lu...
Claims
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Login to View More IPC IPC(8): G09G3/20
CPCG11C19/28G09G2310/0286G09G3/3266G09G3/20G09G2310/08
Inventor 黄耀黄炜赟曾超
Owner BOE TECH GRP CO LTD