Patent ID: 8188965
Filing Date: 2012-05-29
Classification: G09G

Abstract:
1. A method of sensing a temperature of a TFT (thin film transistor) cell in a liquid crystal display device, comprising: applying a first current in a sub-saturation region of a TFT cell at a drain of the TFT cell; while the first current is applied on the drain of the TFT cell, measuring a first voltage value between a gate and a source of the TFT cell; applying a second current in the sub-saturation region of the TFT cell at the drain of the TFT cell; while the second current is applied on the drain of the TFT cell, measuring a second voltage value between the gate and the source of the TFT cell; and determining a temperature of the TFT cell by applying a computation on the first and second voltage values.