Samsung Electronics Co., Ltd.

Kyungchun Kim

Yangwook Kim

Hyeongtae Kim

Pansoo Kim

Byungil Kim

Hyunji Yoon

Jisu Yoon

Sukyun Woo

Hyunsang Park

Jae-bum Lee

Yong-Hun Kim

A method of driving a light emitting diode (LED) backlight unit, which includes a plurality of LED elements that are connected to a plurality of gate lines and a plurality of source lines, includes generating a plurality of gate signals applied to the plurality of gate lines. While the plurality of gate signals are generated, a non-overlap interval between activation intervals of two adjacent gate signals is generated. All of the plurality of gate signals are deactivated during the non-overlap interval. A plurality of source signals applied to the plurality of source lines are generated. While the plurality of source signals are generated, a high-impedance (Hi-Z) interval included in the non-overlap interval is generated. At least some of the plurality of source signals have a high-impedance state during the high-impedance interval.

Method of driving light emitting diode backlight unit and display device performing the same

A digital-to-analog converter includes an amplifier including at least two input terminals corresponding to a non-inverting input terminal; and a chopping unit performing a chopping operation between voltages provided to the at least two input terminals corresponding to the non-inverting input terminal. The digital-to-analog converter has an X+Y bit structure and removes an offset by performing an interpolation chopping operation and/or a main buffer chopping operation at the same time. The digital-to-analog structure can be embodied in a small area and can process high bit image data.

Digital-to-analog converter

Growing community of inventors

Yongin-si, South Korea

Kyungchun Kim