Discharge circuit and display device of a display panel
A discharge circuit and display panel technology, applied in static indicators, nonlinear optics, instruments, etc., can solve problems such as screen flickering
Active Publication Date: 2018-05-18
CHENGDU TIANMA MICROELECTRONICS +1
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Problems solved by technology
[0004] The present invention provides a discharge circuit and a display device of a display panel to realize the release of residual charges in the panel and solve the problem of screen flickering caused by residual charges
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[0035] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, only some structures related to the present invention are shown in the drawings but not all structures.
[0036] The present invention provides a discharge circuit for a display panel, comprising:
[0037] At least one first transistor, and the control terminal of the first transistor is short-circuited with the input terminal, the input terminal of each of the first transistors is connected with the high potential input terminal, the display test switch signal input terminal, and at least one of the gate driver Any one of a clock signal input end is connected correspondingly;
[0038] A second transistor, the contro...
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The present invention discloses a discharging circuit of a display panel, and a display device. The discharging circuit comprises: at least one first transistor, wherein a control terminal and an input terminal of each first transistor are short-circuited, and the input terminal of each first transistor is correspondingly connected with a high potential input terminal, a display test switch signal input terminal, and any one of at least one clock signal input terminal of a grid driver; a second transistor, wherein a control terminal of the second transistor is connected with an output terminal of the first transistor, an input terminal of the second transistor is connected with a common voltage input terminal, and an output terminal of the second transistor is connected with a display test data signal input terminal; and a capacitor, wherein a first terminal of the capacitor is connected with the output terminal of the first transistor, and a second terminal of the capacitor is connected with the common voltage input terminal. Shutdown ghost frames and flicker phenomenon after restart due to residual charge are prevented.
Description
technical field [0001] Embodiments of the present invention relate to the field of display technology, and in particular, to a discharge circuit of a display panel and a display device. Background technique [0002] In recent years, liquid crystal displays have been popularized due to their advantages such as low operating voltage, low power consumption, low radiation, small space occupation, and thin, light and beautiful appearance, and they are called the mainstream display devices in the market. At present, people's requirements for liquid crystal displays are constantly increasing, especially the display quality requirements of the entire display are getting higher and higher. Among them, the afterimage problem is one of the key factors affecting the quality of picture display. [0003] When the liquid crystal display is powered off and after various tests, the pixel capacitors in the liquid crystal display have no time to discharge or the discharge is incomplete, which...
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IPC IPC(8): G02F1/1362G09G3/00
CPCG02F1/136204G09G3/006
Inventor 曾国波陈飞侯东全彭旭辉
Owner CHENGDU TIANMA MICROELECTRONICS