发明授权
US07038646B2 Circuit arrangement for the voltage supply of a liquid crystal display device 失效
用于液晶显示装置的电压供给的电路装置

Circuit arrangement for the voltage supply of a liquid crystal display device
摘要:
The circuit arrangement serves for the voltage supply of the row and column drivers of a liquid crystal display device. It comprises a voltage divider (1) having a plurality of series-connected resistors (R1–R5) and having voltage pick-offs (22–25) arranged between the resistors (R1–R5) for picking off different voltage levels (V2–V5). A single one (25) of the voltage pick-offs (22–25) is provided with means (3) for fine-tuning of the voltage level (V5) picked off there. By individually calibrating each individual circuit arrangement once, the one voltage level (V5) may be fine-tuned such that crosstalk caused by asymmetrical voltage levels, i.e. mutual interaction of pixel contents, is reduced. The advantages of the circuit arrangement come into their own in particular when it is used in liquid crystal display devices with a gray-stage display or color display.
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