发明名称 |
CONSTANT CURRENT OUTPUT DRIVER AND SEMICONDUCTOR DEVICE INCLUDING THE SAME |
摘要 |
PROBLEM TO BE SOLVED: To provide a constant current output driver capable of suppressing increase in the period of a voltage acceleration test without damage to a transistor for current output.SOLUTION: A constant current output driver includes: a reference voltage generating circuit which generates a reference voltage and applies the generated reference voltage to a reference voltage line; a capacitor having one end connected to the reference voltage line and power supply potential being applied to the other end; a pull-down circuit which fixes the reference voltage line to ground potential according to a first test signal; a first transistor in which power supply potential is supplied to a source end and a pixel driving signal is supplied to a gate end; a current output transistor in which a source end is connected to a drain end of the first transistor and which outputs light emission driving current when the reference voltage is supplied to a gate end via the reference voltage line and an output driving line; a line switch which interrupts the connection between the reference voltage line and the output driving line according to the first test signal; and a pull-up circuit which fixes the output driving line to the power supply potential according to a second test signal.SELECTED DRAWING: Figure 2 |
申请公布号 |
JP2016189003(A) |
申请公布日期 |
2016.11.04 |
申请号 |
JP20160085142 |
申请日期 |
2016.04.21 |
申请人 |
LAPIS SEMICONDUCTOR CO LTD |
发明人 |
TAKAHASHI TAKEO |
分类号 |
G09G3/3283;G09G3/20;H01L33/00 |
主分类号 |
G09G3/3283 |
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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