Driving circuit for display panel and display device

Abstract

The invention discloses a driving circuit for a display panel. The display panel comprises a plurality of display areas. The driving circuit comprises a time sequence controller, a plurality of source drives and a plurality of gamma voltage generation circuits, wherein the time sequence controller is used for providing different time sequence control signals and display data signals to a plurality of display areas; each source drive corresponds to one corresponding display area in the plurality of the display areas, and is used for providing gray scale voltage corresponding to the display data signals to corresponding display areas on the basis of the time sequence control signals; the plurality of the gamma voltage generation circuits are respectively arranged on corresponding source drives of the plurality of the source drive and form a cascading circuit, and are used for providing a plurality types of gamma voltage to corresponding source drive in a cascading mode; and the plurality types of the gamma voltage are used for generating reference voltage of the gray scale voltage for corresponding source drives. By adopting the driving circuit, problems such as gray scale unbalance caused by a plurality of driving circuits in a large-size display panel can be relieved, alleviated or eliminated.

Description

technical field [0001] The invention belongs to the technical field of displays, and more specifically relates to a driving circuit and a display device for a display panel. Background technique [0002] Due to the advantages of thinness, energy saving, and low power consumption, liquid crystal display devices have been widely used in electronic equipment such as televisions, computers, mobile phones, and digital cameras. [0003] figure 1 An equivalent circuit diagram of a liquid crystal display device according to the prior art is shown. The display panel 10 of the liquid crystal display device includes a first glass substrate and a second glass substrate, the first surface of the first glass substrate is opposite to the first surface of the second glass substrate. A plurality of gate scanning lines and a plurality of source data lines intersecting each other are formed on the first surface of the first glass substrate, and a selection thin film transistor and a pixel el...

AI Technical Summary

Problems solved by technology

[0007] Since the gamma voltage generation circuits of each source driver 41 to 44 are independent, the inconsistency between the different gamma voltages generated can lead to differences in the luminance of the four partitions at the same gray scale, resulting in gray scale Uneven (and possibly uneven dividing lines)

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