Samsung Display Co., Ltd.

Caldera Micro Technology, Inc.

Jinho Jeong

Youngwoo Kwon

John H Hong

Won Yup Ko

Kyushik Hong

Seonghyun Go

Gyuhun Han

Dongwook Lee

Nyuntae Kim

Wooil Park

John Hyunchul Hong

A data driver which drives a display panel including a data line, a gate line and a common voltage line. The data driver includes a digital-to-analog converter configured to convert a data signal to a data voltage and an output buffer configured to amplify the data voltage. The output buffer includes an output channel through which an amplified data voltage is output to the data line and a dummy channel through which a feedback voltage corresponding to a common voltage from the common voltage line is received.

Data driver and a display apparatus having the same

A variable bandwidth, distributed amplifier circuit includes an input transmission line; an output transmission line; and a plurality of amplifier cells having a respective plurality of cell inputs distributed along the input transmission line and cell outputs distributed along said output transmission line. Each amplifier cell comprises a cascode amplifier having an input transistor, an output transistor, and a variable impedance device in a circuit branch coupled to a gate of the output transistor. The impedance of the variable impedance device is responsive to a variable bias control signal.

Wideband, variable-bandwidth distributed amplifier

Growing community of inventors

Seoul, South Korea

Jinho Jeong