Sharp Kabushiki Kaisha Corporation

Ren Uchida

Masami Mori

A test signal to be supplied to a driver section when the driver section is subjected to an operation test is generated by a test circuit. In the test circuit, the test signal can be generated by a burn-in control circuit in accordance with a clock signal TESTCK supplied from an outside source.

Semiconductor device, semiconductor device testing method, and probe card

The set values of the base power supply voltages are divided between 10 [V] and 0 [V], the upper limit value and the lower limit value of the drive voltage specification of a liquid crystal driver. A base power supply potential difference of 10 [V] between Vto Vof the base power supply terminals can be generated. By taking the gradation levels included between Vto Vof these base power supply terminals as test objects, each of the neighboring gradation output levels can mutually have a potential difference of about 200 [mV] (base power supply potential difference between the terminals 10000 [mV]/51 gradation levels). For the gradation levels included between these base power supply terminals, for every gradation level, test is performed while changing sequentially the input data and the setting of the judgment level of the comparator, and the gradation levels included in this interval are all tested.

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Nara, Japan

Ren Uchida