Samsung Electronics Co., Ltd.

Youngsub Jin

Hajun Lee

Jeongah Ahn

Yongjoo Song

Jiyong Jeong

A display driving circuit is provided. The circuit drives a display panel that includes data lines, sensing lines, and sub-pixels connected to the data lines and the sensing lines. The display driving circuit includes a data driver integrated circuit that drives the data lines. The data driver integrated circuit includes a driving block and a sensing block. The driving block includes plural digital-analog converters (DACs) each performing digital-analog conversion with respect to received sub-pixel data to generate output voltages and provide the output voltages of the DACs to the data lines. The sensing block measures grayscale voltages output from the DACs in a first operation mode and measures pixel voltages of the sub-pixels received from the sensing lines in a second operation mode.

Display driving circuit and operating method thereof

A sensing circuit includes initialization switches, shield switches, signal selection switches and a signal current integrator. The initialization switches apply an initialization voltage to sensing channels based on an initialization control signal. The shield switches apply a shield voltage different from the initialization voltage to the sensing channels based on shield control signals. The signal selection switches sequentially output sensing currents received from the sensing channels based on sensing control signals. The signal current integrator sequentially converts the sensing currents into sensing voltages. When a target sensing current is to be detected from a target sensing channel from the sensing channels, the shield voltage is applied to at least one shield sensing channel adjacent to the target sensing channel from the sensing channels.

Growing community of inventors

Suwon-si, South Korea

Youngsub Jin