US 2019/0197977 A1 · SCAN SIGNAL COMPENSATING METHOD, SCAN SIGNAL COMPENSATING CIRCUIT AND DISPLAY DEVICE

Abstract

The application relates to a scan signal compensating method, a scan signal compensating circuit and a display device. The method includes: obtaining an accumulated working time of a display device; acquiring at least one compensation voltage value from a look-up table according to the accumulated working time; and adjusting at least one DC voltage inputted to the GOA driving circuit according to the at least one compensation voltage value. That is, by counting the accumulated working time of the display device, searching a pre-stored look-up table according to the accumulated working time to determine the compensation voltage value and adjusting the related voltage value(s) of the GOA driving circuit according to the compensation voltage value, the problems of ghost and flicker in the display device caused by drain current drifts of some TFTs in the GOA driving circuit suffered from long-term bias voltages are suppressed consequently.

Claims14

Dependent claims

A scan signal compensating method adapted for a gate driver on array (GOA) driving circuit, wherein the method comprises:

obtaining an accumulated working time of a display device;
acquiring at least one compensation voltage value from a look-up table according to the accumulated working time;
and
adjusting at least one direct current (DC) voltage inputted into the GOA driving circuit according to the at least compensation voltage value, thereby compensating a scan signal outputted from the GOA driving circuit.

1 more element

A scan signal compensating circuit arranged in a display device and comprising a processor and a memory;

wherein the memory is configured to store a preset look-up table, and the look-up table comprises mapping relationships between accumulated working times and compensation voltage values;
wherein the processor is electrically connected with the memory, a timing control circuit of the display device and a GOA driving circuit of the display device;
the processor is configured to obtain a current working time from a timer of the timing control circuit, find a previous accumulated working time from the memory, calculate a current accumulated working time, find at least one compensation voltage value according to the current accumulated working time, and send the at least one compensation voltage value to the GOA driving circuit for voltage compensation.

Dependencies are inferred from the claim text.

Scan signal compensating method, scan signal compensating circuit and display device

Life of this patent

Scan signal compensating method, scan signal compensating circuit and display device

Life of this patent

Abstract

Claims14