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Gate driving method and structure

A gate drive and bias current technology, applied to instruments, static indicators, etc., can solve the problem of increased panel power consumption

Inactive Publication Date: 2015-12-02
BOE TECH GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such a driving scheme causes the gate channel of the edge channel to be driven normally, while the gate channel of the center channel is overdriven, which in turn leads to a significant increase in panel power consumption

Method used

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  • Gate driving method and structure
  • Gate driving method and structure
  • Gate driving method and structure

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Embodiment Construction

[0021] Now, a detailed reference is provided to the embodiments of the present invention, and examples thereof are illustrated in the drawings, and the same numbers in the drawings all represent the same elements. To explain the present invention, the following embodiments will be described with reference to the drawings.

[0022] The low-power gate IC topology to be protected by the present invention is applied to an existing liquid crystal display panel, where the fan-out resistance of the gate drive IC at the edge of the panel is small, and the fan-out resistance of the gate drive IC at the center of the panel Larger structure. Due to this relationship of IC fan-out resistance, it is sufficient to drive the gate operation by providing a lower output bias current near the center of the panel.

[0023] Figure 4 Shows the OP (operational amplifier) ​​output bias current lookup table of the gate drive chip, that is, the OP output of the gate drive IC is adjustable. As shown in 4,...

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Abstract

The invention provides a gate driving method and a gate driving device, so as to drive a gate of a liquid crystal display. The driving method comprises the steps that according to parts, which are away from the center of a panel, of the gate driving device, the gate driving device of a liquid crystal display panel is classified into a panel edge gate driving device, a panel middle driving device and a panel center gate driving device; and from the panel edge gate driving device to the panel center gate driving device, the bias current of an output operational amplifier of a gate drive IC gradually decreases. According to the invention, a gate drive IC output resistor and the gate drive IC output operational amplifier are designed; under the condition of normal panel drive display, the power consumption of the gate drive IC is minimized; and the power consumption of the liquid crystal panel is further reduced.

Description

Technical field [0001] The invention relates to the field of liquid crystal displays, in particular to a gate driving method and structure. Background technique [0002] In recent years, with the development of semiconductor technology, portable electronic products and flat panel display products have also emerged. Thin Film Transistor (TFT, ThinFilmTransistor) liquid crystal displays have gradually become the standard output device of various data products due to their advantages of low operating voltage, no radiation scattering, light weight and small size. As various display devices, such as mobile phones, PADs, and other systems become more integrated and thinner, the system CPU has also evolved from the previous single-core, dual-core, quad-core, and eight-core and even more core product systems. Ask the market, the system power consumption is getting higher and higher. The market has higher and higher requirements for the battery life of mobile phones and PADs. Continuous...

Claims

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Application Information

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IPC IPC(8): G09G3/36
CPCG09G3/3677G09G3/3648G09G2310/0291G09G2310/08G09G2330/023
Inventor 郑亮亮何剑
Owner BOE TECH GRP CO LTD
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