Voltage shifting circuit with short-circuit detection mechanism and short-circuit detection method

Abstract

A level shift circuit includes a level shift module and a voltage comparing module. The level shift module includes a plurality of stages of level shift units, each including a front-end circuit and an inverter circuit. The inverter circuit is electrically coupled to the front-end circuit and receives and inverts an output signal of the front-end circuit. The front-end circuit receives a clock signal, converts high / low voltage level of the clock signal into first / second voltage level, respectively, and outputs a respective signal with the first / second voltage level. The voltage comparing module is coupled to the level shift module and receives output signals of the inverter circuit of the first level shift unit and of the front-end circuit in the second level shift unit and compares the two output signals. The voltage comparing module outputs a short-circuit protection trigger signal when the two output signals have different voltages.

Description

technical field [0001] The present invention relates to a voltage shifting circuit and a short-circuit detection method, in particular to a voltage shifting circuit with a short-circuit detection mechanism and a short-circuit detection method thereof. Background technique [0002] A display device using GOA (gate on array) technology can usually be divided into two parts: an external circuit board and a display panel. The external circuit board is equipped with a timing controller and a voltage shifter circuit. The panel is composed of pixels, and is equipped with a plurality of source lines, a plurality of gate lines, and a plurality of shift registers formed directly on the substrate of the display panel. constituted gate drive circuit. The timing controller will provide multiple clock signals to the voltage shift circuit, so that the voltage shift circuit can convert the high potential and low potential of these clock signals into the high potential and low potential req...

AI Technical Summary

Problems solved by technology

[0003] Therefore, if dust particles fall on these wires during the manufacturing process or assembly process of the display panel, it is easy to cause a short circuit when the voltage shifting circuit transmits the converted clock signals to the gate driving circuit, and This short circuit condition may cause damage to the circuit components in the display device

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