发明授权
US07969401B2 Liquid crystal driving apparatus with masked latch pulse generating circuit
有权
具有屏蔽锁存脉冲发生电路的液晶驱动装置
- 专利标题: Liquid crystal driving apparatus with masked latch pulse generating circuit
- 专利标题(中): 具有屏蔽锁存脉冲发生电路的液晶驱动装置
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申请号: US12055251申请日: 2008-03-25
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公开(公告)号: US07969401B2公开(公告)日: 2011-06-28
- 发明人: Hideo Ito
- 申请人: Hideo Ito
- 申请人地址: JP Osaka JP Gunma
- 专利权人: Sanyo Electric Co., Ltd.,Sanyo Semiconductor Co., Ltd.
- 当前专利权人: Sanyo Electric Co., Ltd.,Sanyo Semiconductor Co., Ltd.
- 当前专利权人地址: JP Osaka JP Gunma
- 代理机构: SoCal IP Law Group LLP
- 代理商 Steven C. Sereboff; John E. Gunther
- 优先权: JP2007-080047 20070326
- 主分类号: G09G3/36
- IPC分类号: G09G3/36
摘要:
A liquid crystal driving apparatus comprising: a latch circuit including latch-areas each in n-bit unit, configured to sequentially latch into a designated latch-area, pieces of n-bit display-data obtained by dividing m-bit display-data for driving column-electrodes corresponding to each row-electrode of a liquid crystal display panel including row and column-electrodes; a data-register configured to sequentially hold the pieces of n-bit display-data; and a latch-pulse generating circuit configured to generate a latch-pulse for latching the n-bit display-data into the designated latch-area every time the data-register holds the n-bit display-data, including: a counter whose count-value changes every time the data-register holds the n-bit display-data; a decoder configured to decode the count-value to generate the latch-pulse; and a masking circuit configured to mask generation of the latch-pulse from the decoder in a period of time during which the count-value is changed, the column-electrodes being driven based on the m-bit display-data from the latch circuit.
公开/授权文献
- US20090040213A1 Liquid Crystal Driving Apparatus 公开/授权日:2009-02-12
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