Grid drive circuit, and display device using grid drive circuit
A gate drive circuit and gate drive technology, used in static indicators, instruments, etc., can solve the problems of unstable gate drive signals and transmission signals, unfavorable narrow frame design, large layout space, etc., to avoid attenuation accumulation , low power consumption, the effect of improving stability
Active Publication Date: 2015-12-23
KUSN INFOVISION OPTOELECTRONICS
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Problems solved by technology
However, since the channel width-length ratio of the pull-up transistor is relatively large, that is, the parasitic capacitance of its own gate and source is relatively large, when multiple AC signals are switched between positive and negative voltages, the gate and source of the transistor The parasitic capacitance will produce a large coupling effect (especially at high temperature), which will cause the gate drive signal output by the gate drive unit and the transmission signal to be unstable. In addition, the large channel width-to-length ratio needs to occupy Larger layout space and high power consumption are not conducive to the design of narrow borders
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[0020] In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0021] Although the present invention uses the terms first, second, third, etc. to describe various elements, signals, ports, components or sections, these elements, signals, ports, components or sections are not limited by these terms. These terms are only used to distinguish one element, signal, port, component or section from another element, signal, port, component or section. In the present invention, an element, port, component or part is "connected" or "connected" to another element, port, component or part, which can be understood as a direct electrical connection, or can also be understood as an indirect electrical connection with an intermediate element. sexual connection. Unless otherwise defined, all terms (including techn...
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The invention provides a grid drive circuit, comprising multiple levels of grid driving units; each level of grid driving unit comprises a driving signal generation module, a transmission signal generation module, a first stabilizing module and a second stabilizing module; the driving signal generation module comprises first, second and third switch elements, and is used for outputting the grid driving signal of the level; the transmission signal generation module comprises a fourth switch element, and is used for outputting the transmission signal of the level; the first stabilizing module and the second stabilizing module work alternatively, so as to stabilize the grid driving signal of the level outputted by the driving signal generation module, and the transmission signal of the level outputted by the transmission signal generation module. The invention also provides a display device including the grid drive circuit. According to the invention, the stability and reliability of the grid drive circuit are improved, and power consumption is small.
Description
technical field [0001] The invention relates to the field of display technology, in particular to a gate drive circuit and a display device using the same. Background technique [0002] Liquid crystal display (Liquid Crystal Display, LCD) has many advantages such as light and thin, energy-saving, non-radiation, etc., so it has gradually replaced the traditional cathode ray tube (CRT) display. Currently, liquid crystal displays are widely used in high-definition digital televisions, desktop computers, personal digital assistants (PDAs), notebook computers, mobile phones, digital cameras and other electronic devices. [0003] Taking a thin film transistor (ThinFilmTransistor, TFT) liquid crystal display device as an example, it includes: a liquid crystal display panel and a driving circuit, wherein the liquid crystal display panel includes a plurality of gate lines and a plurality of data lines, and two adjacent gate lines A pixel unit is formed by intersecting with two adjac...
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Inventor 于子阳李海波朱欢欢
Owner KUSN INFOVISION OPTOELECTRONICS