Samsung Display Devices Co., Ltd.

Samsung Electronics Co., Ltd.

Cheol-woo Park

Sun-jung Choi

Choon-yul Oh

Mun-Pyo Hong

Nam-Seok Roh

Keun-Kyu Song

Jeong-Ye Choi

Min-seok Kim

A liquid crystal display is provided, which includes a liquid crystal panel assembly including a plurality of red, green, blue and white pixel areas, and a backlight unit placed at a side of the liquid crystal panel assembly. The light emitted from the backlight unit has a color coordinate (x, y) where x ranges from about 0.31 to about 0.34, and y ranges from about 0.32 to about 0.35.

Four color liquid crystal display and panel therefor

In a method for driving a matrix liquid crystal display (LCD), whereby the selection ratio of a scanning electrode is improved and the voltage magnitude variation is considerably reduced, the scanning electrode driving signals are made to overlap each other according to an orthogonal function to then be sequentially applied to adjacent scanning electrodes. The data electrode driving signals are made to change in their voltage level through the step of maintaining an intermediate voltage level in the overlap interval to then be applied to data electrodes in the alternative, or the scanning electrode driving signals having opposite polarity are periodically applied to adjacent scanning electrodes. Therefore, the selection ratio of scanning electrodes are improved and the generation of the waveform differential is minimized, thereby reducing the crosstalk generated in a picture.

Method for driving a liquid crystal display

A gray scale display driving method of a matrix liquid crystal display (LCD) and a display driver implementing this method, can reduce the scanning and data electrode driving signal voltages and the driving voltage magnitude variation for the respective sub-frames and can improve the picture quality. The method includes the steps of determining an n-bit error-diffused value of N-bit picture data, where n is smaller than N, converting the N-bit picture data into an M-bit code, where M is larger than or equal to N, error-diffusing n-bits of the converted picture data, and displaying picture data of M-n bits, with n bits being error-diffused, as a picture by a gray display method.

Gray scale display driving method of a matrix liquid crystal display and

Growing community of inventors

Suwon, South Korea

Cheol-woo Park