GOA circuit, liquid crystal panel and display device
A GOA and circuit technology, applied to static indicators, instruments, etc., to achieve the effect of improving reliability and stability
Active Publication Date: 2018-01-12
TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0007] The technical problem to be solved by the embodiments of the present invention is to provide a GOA circuit, a liquid crystal panel, and a display device, which can avoid the situation that the thin film transistor of the pull-up control circuit in the single-stage GOA structural unit cannot be completely turned off, thereby improving the performance of the GOA circuit. reliability and stability
Method used
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Embodiment Construction
[0025] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings.
[0026] Embodiment 1 of the present invention provides a GOA circuit, which is formed by cascading multiple GOA structural units. Each single-stage GOA structural unit includes a pull-up control circuit, a pull-up circuit, a downlink circuit, a pull-down circuit, a pull-down maintaining circuit and a bootstrap capacitor, and each single-stage GOA structural unit is provided with a clock signal, a precharge The dot potential signal and the gate output signal output to the horizontal scan line; wherein,
[0027] The downlink circuit of each single-stage GOA structural unit in the GOA circuit is composed of a thin film transistor, and the gate of the thin film transistor of the downlink circuit in each single-stage GOA structural unit is connected to the correspond...
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The invention provides a GOA circuit. The GOA circuit consists of a plurality of cascaded GOA structure units; each single GOA structure unit comprises a pull-up control circuit, a pull-up circuit, adownward circuit, a pull-down circuit, a pull-down maintaining circuit and a bootstrap capacitor; the download circuit of each single GOA structure unit consists of a thin film transistor, a grid electrode of the thin film transistor of each download circuit is connected to a connecting line between the pull-up circuit in the corresponding same GOA structure unit and a grid electrode output signal, a drain electrode of the thin film transistor of each download circuit is connected into a signal source for generating a clock correction signal, and a source electrode of the thin film transistorof each download circuit is connected into the pull-up control circuit of the next GOA structure unit; and the duty ratio of the clock correction signal connected with each download circuit is smallerthan the duty ratio of a clock signal connected with the corresponding pull-up circuit. By the GOA circuit, the circumstance that thin film transistors in pull-up control circuits of GOA structure units cannot be closed completely can be avoided, and therefore, the reliability and stability of the GOA circuit are improved.
Description
technical field [0001] The invention relates to the technical field of liquid crystal display, in particular to a GOA (Gate Driver On Array, array substrate row drive) circuit, a liquid crystal panel and a display device. Background technique [0002] Liquid crystal displays have the advantages of low radiation, small size and low energy consumption, and have gradually replaced traditional cathode ray tube displays in some applications, so they are widely used in notebook computers, personal digital assistants PDA, flat-screen TVs or mobile phones and other products superior. The traditional liquid crystal display method is to use an external driver chip to drive the chip on the panel to display the image. However, in order to reduce the number of components and reduce the manufacturing cost, in recent years, the driver circuit structure has been gradually developed directly on the display panel, such as using GOA technology. , that is, the gate drive circuit is integrated ...
Claims
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IPC IPC(8): G09G3/36
Inventor 陈帅
Owner TCL CHINA STAR OPTOELECTRONICS TECH CO LTD