Ecd coloring and decoloring driving circuit
专利汇可以提供Ecd coloring and decoloring driving circuit专利检索，专利查询，专利分析的服务。并且PURPOSE: To permit coloring and decoloring driving of ECD while the malfunction or breakdown of an IC is prevented by connecting diodes of a low forward voltage between the ECD terminals of an electrochromic device on the side where the voltage is low at the time of coloration and the negative electrode of a power supply circuit.
CONSTITUTION: The cathodes of the Schottky diodes S
1 , S
2 are respectively connected to the ECD terminals T
1 , T
2 of the ECD 14 and the anodes of the diodes S
1 , S
2 are connected to the negative electrode OV of the power supply 10. The ECD terminal T
1 has a negative potential but the diode S
1 switches at a high speed and operates to prevent the drop of the potential of the terminal T
1 to ≤-0.3V when a switch SW is turned on at every coloration. The drop of the potentials of the terminals T
1 , T
2 to ≤-0.3V is prevented at the time of change-over to the coloration and decoloration and, therefore, the ECD terminal voltage does not exceed 0.3V and does not exceed the forward voltage 0.6V of the p-n junction of an IC circuit formed by a silicon substrate. The flow of the large current from the IC driving circuit and the consequent malfunction or breakdown of the IC circuit are thereby prevented.
COPYRIGHT: (C)1988,JPO&Japio，下面是Ecd coloring and decoloring driving circuit专利的具体信息内容。
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