⚡ 本页包含 AI 生成的分析内容,仅供参考
提出一种用于移动TFT-LCD驱动IC的紧凑低功耗CDAC架构,采用单个电阻梯产生内部参考总线,通过逆LCD响应补偿像素非线性,并支持独立伽马校正以满足高色深需求。
architecture, which uses a single resistor ladder to produce a set of internal reference busses. These references are generated as the inverse of the LCD response in order to compensate the LCD pixel’s nonlinear characteristic. In each column driver, the voltage reference bus and a local decoder are needed. Nowadays, both independent gamma correction and higher color depth are required in high-performance applications. Independent gamma correction for each color can provide constant color temperature across all gray levels. An RDAC however, is not suitable in such an application due to the geometrically increased decoder size and the extra reference bus required for separate gamma correction, which will increase the die size dramatically.
Yoon-Kyung Choi, Zhong-Yuan Wu, KyungMyun Kim, YongHun Lee,
MinSoo Cho, HyoSun Kim, DongHun Lee, Won-Gab Jung Samsung Electronics, Yongin, Korea Virtually all column drivers in use today use a resistor string DAC (RDAC)