发明申请
US20110122056A1 REFERENCE VOLTAGE GENERATORS FOR USE IN DISPLAY APPLICATIONS 有权
参考电压发生器用于显示应用

  • 专利标题: REFERENCE VOLTAGE GENERATORS FOR USE IN DISPLAY APPLICATIONS
  • 专利标题(中): 参考电压发生器用于显示应用
  • 申请号: US13019558
    申请日: 2011-02-02
  • 公开(公告)号: US20110122056A1
    公开(公告)日: 2011-05-26
  • 发明人: Chor Yin Chia
  • 申请人: Chor Yin Chia
  • 申请人地址: US CA Milpitas
  • 专利权人: INTERSIL AMERICAS INC.
  • 当前专利权人: INTERSIL AMERICAS INC.
  • 当前专利权人地址: US CA Milpitas
  • 主分类号: G09G3/36
  • IPC分类号: G09G3/36
REFERENCE VOLTAGE GENERATORS FOR USE IN DISPLAY APPLICATIONS
摘要:
A multi-reference voltage generator includes an interface controller, a first bank of N m-bit registers and a second bank of N m-bit registers. A first multiplexer has inputs connected to outputs of the first and second bank of registers. An m-bit digital-to-analog (DAC) has an m-bit parallel input connected to an output of the first multiplexer. An analog demultiplexer has an input connected to an analog output of the m-bit DAC. Each voltage storage device in a first group of N voltage storage devices is connected to a corresponding output of the analog demultiplexer. Similarly, each voltage storage device in a second group of N voltage storage devices is connected to a corresponding output of the analog demultiplexer. N further multiplexers each have a first input connected to an output of a corresponding one of the voltage storage devices in the first group and a second input connected to an output of a corresponding one of the voltage storage devices in the second group. N output buffers, each have an input connected to an output of a corresponding one of the N further multiplexers, and an output useful for driving a column driver.
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