Richtek Technology Corporation

Chun-I Lin

Shui-Mu Lin

Der-Jiunn Wang

Shei-Chie Yang

Chung-Hsien Tso

Ming-Yu Lin

Jun-Sheng Cheng

A Gamma curve correction method for an LCD sets a ground potential of the LCD as a common voltage, and adjusts at least one of a plurality of positive Gamma voltages and a plurality of negative Gamma voltages of the LCD such that the central value of a Gamma curve established by the positive Gamma voltages and the negative Gamma voltages becomes closer to the common voltage. As a result, flickers existing in the images of the LCD are improved.

Gamma curve correction method for a liquid crystal display

LED dimming control circuit and method compensate LED current or LED average current by LED characteristics to improve dimming efficiency and performance. LED characteristic related look-up tables are stored to provide compensation values, and input LED current setting information is compensated by the compensation values to generate corrected LED current setting information for determining LED brightness.

Compensating LED current by LED characteristics for LED dimming control

Growing community of inventors

Yangmei, Taiwan

Chun-I Lin