发明名称 |
Driver for capacitive light-emitting device with degradation compensated brightness control |
摘要 |
A driving apparatus according to the invention turns on a capacitive light emitting device having a first electrode and a second electrode in accordance with a light-on instruction. The apparatus has: a voltage accumulating unit, for example, a capacitor for holding a voltage energy corresponding to the contents of the light-on instruction; a circuit for applying the voltage energy held in the voltage accumulating unit to a portion across electrodes (A and B) in one direction in response to a first control signal and for applying the voltage energy held in the voltage accumulating unit to the portion across the electrodes in the other direction in response to a second control signal; and a circuit for alternately generating the first and second control signals. The invention can cope with a deterioration due to an aging change or the like, prevent a reduction of a light emission intensity due to the deterioration or the like, and contribute to a simplification of the construction and a decrease in costs.
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申请公布号 |
US5982104(A) |
申请公布日期 |
1999.11.09 |
申请号 |
US19960754479 |
申请日期 |
1996.11.22 |
申请人 |
PIONEER ELECTRONIC CORPORATION;TOHOKU PIONEER ELECTRIC CORPORATION |
发明人 |
SASAKI, YOSHIO;SAITOH, MAMORU |
分类号 |
G09G3/30;H05B33/08;(IPC1-7):H05B37/02 |
主分类号 |
G09G3/30 |
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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