发明授权
- 专利标题: Display device
- 专利标题(中): 显示设备
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申请号: US08932246申请日: 1997-09-17
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公开(公告)号: US06300927B1公开(公告)日: 2001-10-09
- 发明人: Yasushi Kubota , Kenichi Katoh , Jun Koyama
- 申请人: Yasushi Kubota , Kenichi Katoh , Jun Koyama
- 优先权: JP8-271614 19960920
- 主分类号: G09G336
- IPC分类号: G09G336
摘要:
There is disclosed an active matrix liquid crystal display that receives input signals having small amplitudes and needs no externally attached level-shifting circuit. The active matrix liquid crystal display has a level-shifting circuit for amplifying various input signals, such as control signals, a clock signal, and a start pulse signal, and supplying the amplified signals to peripheral driver circuits. These peripheral driver circuits drive an active matrix circuit. The level-shifting circuit is made of a differential amplifier consisting of polysilicon TFTs. This amplifier is an analog amplifier. This level-shifting circuit is fabricated on the same substrate as the active matrix circuit and the peripheral driver circuits. If the amplitudes of the input signals are small, level-shifting operations can be performed well. Since any externally attached level-shifting circuit is dispensed with, the cost can be curtailed.
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