发明授权
- 专利标题： Display appliance
- 专利标题（中）： 显示设备
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申请号： US10701342申请日： 2003-11-04
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公开(公告)号： US07522159B2公开(公告)日： 2009-04-21
- 发明人: Kazuhiko Miyata , Jun Koyama , Hiroyuki Miyake
- 申请人： Kazuhiko Miyata , Jun Koyama , Hiroyuki Miyake
- 申请人地址： JP JP
- 专利权人： Semiconductor Energy Laboratory Co., Ltd.,Sharp Kabushiki Kaisha
- 当前专利权人： Semiconductor Energy Laboratory Co., Ltd.,Sharp Kabushiki Kaisha
- 当前专利权人地址： JP JP
- 代理机构： Cook Alex Ltd.
- 优先权： JP2002-325765 20021108
- 主分类号： G09G5/00
- IPC分类号： G09G5/00
摘要：
A small-sized, light-weight display device having an audio output circuit is provided. A display device of the present invention has a flat speaker and an audio signal processing device is constructed from thin film semiconductor elements, typically, thin film transistors, on the display device. The speaker is driven by BTL driving, thereby reducing the power supply voltage and preventing degradation of the thin film transistors. A display device with a built-in audio signal processing circuit is thus reduced in size and weight.
公开/授权文献
- US20040131211A1 Display appliance 公开/授权日：2004-07-08