Gate driving circuit and display device

Abstract

The invention discloses a gate driving circuit and a display device. The gate driving circuit comprises a shifting register, a first gating module and / or a second gating module. The shifting register is composed of multiple shifting register units connected in sequence. The first gating module is connected to a gate scanning trigger signal line and a gating signal line. The second gating module is connected to the gating signal line. Since the first gating module is added to provide the gate scanning trigger signals of the gate scanning trigger signal line to the preset shifting register unit according to the gating signals provided by the gating signal line, and the second gating module is added to cut off the relation between the preset shifting register unit and the previous-stage shifting register unit according to the gating signals provided by the gating signal line, the shifting register is off from the preset shifting register unit, the gate signals of black areas are switched off selectively when a liquid crystal display panel is in a local display mode, and accordingly the power consumption of the whole display panel is decreased.

Description

technical field [0001] The present invention relates to the technical field of liquid crystal display, in particular to a gate driving circuit and a display device. Background technique [0002] In recent years, with the vigorous development of semiconductor technology, portable electronic products and flat panel display products are also emerging. Thin Film Transistor (TFT) liquid crystal display has gradually become a standard output device of various electronic products due to its advantages of low operating voltage, no radiation scattering, light weight and small size. As various display devices, such as mobile phones, tablet computers (PAD) and other systems become more and more integrated and thinner, the central processing unit (Central Processing Unit, referred to as CPU) of the system has been upgraded from the previous single-core to The current dual-core, quad-core, octa-core and even more core product systems are coming to the market one after another. The power...

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Problems solved by technology

[0004] The existing circuit design only reduces the power consumption of the source drive circuit. However, when the TFT liquid crystal display is in a partial display state, for example, when playing in full screen with an aspect ratio of 4:3 and an aspect ratio of 16 : 9 film, there are black borders on the upper and lower sides of the screen (that is, the black-sweeping area), but the gate drive circuit still scans line by line from top to bottom without turning off the gate signal of the black-sweeping area, so that the grid The power consumption of the pole drive circuit has not been reduced, which will cause the overall power consumption of the liquid crystal display is still very large

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