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    • 32. 发明授权
    • LCD voltage generating circuits
    • LCD电压发生电路
    • US08547370B2
    • 2013-10-01
    • US11891528
    • 2007-08-10
    • Sung-Hwan HongNam-Seok LeeSung-Kyu HongHo-Yun Byun
    • Sung-Hwan HongNam-Seok LeeSung-Kyu HongHo-Yun Byun
    • G09G3/36
    • G09G3/3696G09G2300/0408G09G2310/0289G09G2320/041
    • In a voltage generating circuit and a display apparatus, a driving voltage generator receives an input voltage to output a first driving voltage and a second driving voltage that is inversely proportional to a temperature in response to a feedback voltage. A temperature compensator generates the feedback voltage as a function of the temperature and the second driving voltage and applies it to the driving voltage generator. A gate-on voltage generator pumps the second driving voltage to generate a gate-on voltage, and a gamma voltage generator outputs a plurality of gamma voltages, each having a different voltage level that is disposed between the first driving voltage and a ground voltage. The gate-on voltage, which is inversely proportional to the temperature, is applied to the gate driver, and the gamma voltages, which are maintained at constant levels, prevent the response speed of the display apparatus from varying with temperature.
    • 在电压产生电路和显示装置中,驱动电压发生器接收输入电压以输出响应于反馈电压而与温度成反比的第一驱动电压和第二驱动电压。 温度补偿器产生作为温度和第二驱动电压的函数的反馈电压并将其施加到驱动电压发生器。 栅极电压发生器泵送第二驱动电压以产生栅极导通电压,伽马电压发生器输出多个伽玛电压,每个伽马电压具有设置在第一驱动电压和接地电压之间的不同电压电平。 与栅极驱动器成反比的栅极导通电压被施加到栅极驱动器,并且保持恒定电平的伽马电压防止显示装置的响应速度随着温度而变化。