发明名称 |
Liquid crystal display device comprising an audio signal processing circuit and electronic apparatus using the same |
摘要 |
<p>A liquid crystal display device provided with an audio signal processing function, which includes an audio signal processing circuit with a large S/N ratio and a small glitch is provided. The display device of the invention includes a resistor string D/A converter circuit whose dynamic range can be increased by using a common power supply for a D/A converter circuit and a signal line driver circuit. Accordingly, a glitch generated in the D/A converter circuit can be reduced relatively to an audio signal and an S/N ratio of the D/A converted signal can thus be increased.
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申请公布号 |
EP1505806(A3) |
申请公布日期 |
2008.02.20 |
申请号 |
EP20040018412 |
申请日期 |
2004.08.03 |
申请人 |
SEMICONDUCTOR ENERGY LABORATORY CO., LTD.;SHARP KABUSHIKI KAISHA |
发明人 |
MIYATA, KAZUHIKO;KOYAMA, JUN;MIYAKE, HIROYUKI;TAKAHASHI, KEI |
分类号 |
H04M1/60;G09G3/20;G09G3/36;H03M1/08;H03M1/76;H04N5/60;H04N5/63;G02F1/133 |
主分类号 |
H04M1/60 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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