利索-全球专利检索

  1. 登录
  2. 注册
发明授权
CN101625825B 伽玛基准电压产生电路及使用其的平板显示器 失效 - 权利终止

伽玛基准电压产生电路及使用其的平板显示器
摘要：
本发明提供了一种伽玛基准电压产生电路及使用其的平板显示器。该伽玛基准电压产生电路包括R，G和B伽玛基准电压产生器，每个伽玛基准电压产生器都具有产生多个R，G和B伽玛基准电压的多个数字-模拟转换器(DAC)。在每个R，G和B伽玛基准电压产生器的DAC中，用于产生最大灰度级的伽玛基准电压的最高DAC的高电位偏压输入端子与高电位电压源连接。除所述最高DAC之外的其余每个DAC的高电位偏压输入端子和与所述其余每个DAC相邻的上一个DAC的输出端子级联连接。
摘要（英）：

A gamma reference voltage generation circuit and a flat panel display using the same are provided. The gamma reference voltage generation circuit includes R, G and B gamma reference voltage generators each having a plurality of digital-to-analog converters (DACs) that generate a plurality of R, G and B gamma reference voltages. In the DACs of each of the R, G and B gamma reference voltage generators, a high potential bias voltage input terminal of an uppermost DAC used to generate a gamma reference voltage of a maximum gray level is connected to a high potential voltage source. A high potential bias voltage input terminal of each of remaining DACs except the uppermost DAC is cascade-connected to an output terminal of an upper DAC next to each of the remaining DACs.

公开/授权文献
0/0