Display unit, display unit driving method and display system

Abstract

The invention relates to a display unit which comprises a capacitor, pixels and a switch, wherein two terminals of the capacitor respectively receive drain control signals and common voltage signals,and the capacitor charges or discharges according to the voltage difference between the drain control signals and the common voltage signals; two terminal points of each pixel respectively receive thedrain control signals and the common voltage signals, and the pixels display images according to the voltage difference between the drain control signals and the common voltage signals; the switch comprises a first terminal for receiving source control signals, a second terminal for receiving switch control signals, and a third terminal coupled with the pixel and the capacitor; the switch is conducted according to the switch control signals to transmit the source control signals to the pixel and the capacitor through the third terminal; and the switch is conducted twice in one frame accordingto the switch control signals, first conduction enables the pixel to display images, and second conduction enables the capacitor to discharge to prevent the voltage level of the third terminal from exceeding a predetermined voltage.

Description

technical field [0001] The present invention relates to a display driving method, in particular to a method for AC-V com display driver circuit. Background technique [0002] figure 1 is to display a conventional display unit 10 and multiple signals V Gn , V Sn , V com , V Cst and V Dn timing diagram. The display unit 10 includes a switch 14, a pixel 12 and a capacitor 16, the switch control signal V Gn The control switch 14 is turned on or off. When the switch 14 is turned on, the source control signal Vsn and the drain control signal V Dn is the same potential, and the capacitor 16 is based on the drain control signal V Dn and common voltage signal V com The voltage difference is charged, the pixel 12 and the capacitor 16 are coupled in parallel, one end of which receives the drain control signal V Dn , the other end receives the common voltage signal V com , if there is a voltage difference between the two ends of the pixel 12, the pixel 12 will display images...

AI Technical Summary

Problems solved by technology

[0003] Depend on figure 1 learned that the switch 14 outputs the drain control signal V Dn To the capacitor 16 and one end of the pixel 14, due to the capacitive coupling effect, before the switch 14 is turned on, the alternating V com signal will cause the drain control signal V Dn The voltage will be extremely high or extremely low, causing the switch 16 to generate excessive leakage current or causing damage to the switch

Images