发明申请
- 专利标题: Light Emitting Device Array Billboard and Control Method Thereof
- 专利标题(中): 发光装置阵列广告牌及其控制方法
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申请号: US14539082申请日: 2014-11-12
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公开(公告)号: US20150156829A1公开(公告)日: 2015-06-04
- 发明人: Shui-Mu Lin , Chien-Hua Lin , Ching-Yu Chen , Chin-Hui Wang , Yung-Chun Chuang , Ti-Ti Liu
- 申请人: Shui-Mu Lin , Chien-Hua Lin , Ching-Yu Chen , Chin-Hui Wang , Yung-Chun Chuang , Ti-Ti Liu
- 申请人地址: TW Zhubei City
- 专利权人: RICHTEK TECHNOLOGY CORPORATION, R.O.C
- 当前专利权人: RICHTEK TECHNOLOGY CORPORATION, R.O.C
- 当前专利权人地址: TW Zhubei City
- 主分类号: H05B33/08
- IPC分类号: H05B33/08
摘要:
The present invention discloses a light emitting device array billboard and a control method thereof. The light emitting device array billboard includes a light emitting device array circuit, plural line switch circuits, plural channel switch circuits, plural ghost image compensation switch circuits, and a control circuit. The control circuit operates the line switch circuits and the channel switch circuit to turn ON a selected light emitting device for a duty period in a lighting period, and operates the plural ghost image compensation switch circuits to electrically connect a channel node corresponding to the selected light emitting device to a ghost image compensation voltage after the lighting period. The control circuit further adjusts a channel operation signal according to a gray scale compensation signal, to turn ON the selected light emitting device for a gray scale compensation period in addition to the duty period.
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