Display driving circuit and control method thereof, and display device

Abstract

The embodiment of the invention discloses a display driving circuit and a control method thereof, and a display device, and relates to the display technology field, and the display driving circuit and the control method thereof can avoid the problem that bad frames are displayed. The display driving circuit comprises a grid driver, a pulse width regulator, a timing controller and a signal detection unit. The signal detection unit is configured to determine whether first control signals provided by the pulse width regulator to the grid driver and second control signals provided by the timing controller to the grid driver are short-circuit or not; when the first control signals or the second control signals are short-circuit, feedback signals are outputted to the pulse width regulator and / or the timing controller; the pulse width regulator is configured to generate first enabling signals configured to control closing of a backlight module according to the feedback signals; and the timing controller is configured to generate second enabling signals configured to control the display panel to display black frames according to the feedback signals. The display driving circuit is configured to drive the display panel for display.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to a display driving circuit, a control method thereof, and a display device. Background technique [0002] Displays, such as TFT-LCD (Thin Film Transistor Liquid Crystal Display, thin film transistor-liquid crystal display), as a flat panel display device, are becoming more and more popular because of their small size, low power consumption, no radiation, and relatively low production costs. It is increasingly used in the field of high-performance display. [0003] In the TFT-LCD, gate lines and data lines intersecting horizontally and vertically are arranged, and the intersections of the gate lines and data lines define a plurality of sub-pixels arranged in a matrix. During the display process of the TFT-LCD, the gate lines are scanned row by row to gate the sub-pixels row by row. Then output the data voltage to the corresponding sub-pixels through the data lines to dri...

AI Technical Summary

Problems solved by technology

[0004] However, in the prior art, when the TFT-LCD is affected by external factors during the display process, such as noise, it will cause a short circuit in the control signal provided to the driving circuit for driving the gate line, so that the control signal of the display panel Missing, resulting in abnormal gate drive signals received by some gate lines

In this way, during the display process, there will be poor display such as bright lines or areas that are not bright, which will cause visual fatigue to the user after seeing the above-mentioned bad pictures.

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