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    • 6. 发明授权
    • Semiconductor device and the method of testing the same
    • 半导体器件及其测试方法相同
    • US07443373B2
    • 2008-10-28
    • US11002143
    • 2004-12-03
    • Kengo ImagawaMasami MakuuchiNorio ChujoRitsuro OrihashiYoshitomo Arai
    • Kengo ImagawaMasami MakuuchiNorio ChujoRitsuro OrihashiYoshitomo Arai
    • G09G3/36
    • G09G3/3677G09G3/006G09G2310/0289
    • A problem, which one of the inventions included in the present application solves, is to provide a semiconductor device that can simultaneously test a plurality of output pins by less channels of a semiconductor test equipment in number than the integrated output pins of the semiconductor device. Representative one of the inventions has such a configuration that an LCD driver, which is the semiconductor device having a function of driving a gate line of a liquid crystal display panel, comprises: an exclusive-OR circuit for inverting polarities of positive and negative voltages for driving the gate line; a tri-state type inverter circuit capable of changing and controlling, to a high-impedance state, an output circuit for driving the gate line; and at least one of test control terminals TEST for controlling the exclusive-OR circuit and the tri-state type inverter circuit. When a test is conducted, only one terminal of the gate output outputs a positive voltage VGH or negative voltage VGL and the other terminal is set to a high-impedance state, whereby the plurality of gate outputs are simultaneously tested.
    • 包括在本申请中的发明中的一个解决的问题是提供一种半导体器件,其可以通过半导体测试设备的数量少于半导体器件的集成输出引脚的较少通道同时测试多个输出引脚。 代表性的发明之一具有这样的结构,即作为具有驱动液晶显示面板的栅极线的功能的半导体器件的LCD驱动器包括:用于将正和负电压的极性反转的异或电路, 驾驶门线; 能够改变和控制高阻抗状态的用于驱动栅极线的输出电路的三态逆变器电路; 以及用于控制异或电路和三态逆变器电路的测试控制端子TEST中的至少一个。 当进行测试时,仅栅极输出的一个端子输出正电压VGH或负电压VGL,另一个端子被设置为高阻抗状态,从而同时测试多个栅极输出。
    • 7. 发明申请
    • Semiconductor device and the method of testing the same
    • 半导体器件及其测试方法相同
    • US20050122297A1
    • 2005-06-09
    • US11002143
    • 2004-12-03
    • Kengo ImagawaMasami MakuuchiNorio ChujoRitsuro OrihashiYoshitomo Arai
    • Kengo ImagawaMasami MakuuchiNorio ChujoRitsuro OrihashiYoshitomo Arai
    • G01R31/28G02F1/1345G09G3/00G09G3/20G09G3/36
    • G09G3/3677G09G3/006G09G2310/0289
    • A problem, which one of the inventions included in the present application solves, is to provide a semiconductor device that can simultaneously test a plurality of output pins by less channels of a semiconductor test equipment in number than the integrated output pins of the semiconductor device. Representative one of the inventions has such a configuration that an LCD driver, which is the semiconductor device having a function of driving a gate line of a liquid crystal display panel, comprises: an exclusive-OR circuit for inverting polarities of positive and negative voltages for driving the gate line; a tri-state type inverter circuit capable of changing and controlling, to a high-impedance state, an output circuit for driving the gate line; and at least one of test control terminals TEST for controlling the exclusive-OR circuit and the tri-state type inverter circuit. When a test is conducted, only one terminal of the gate output outputs a positive voltage VGH or negative voltage VGL and the other terminal is set to a high-impedance state, whereby the plurality of gate outputs are simultaneously tested.
    • 包括在本申请中的发明中的一个解决的问题是提供一种半导体器件,其可以通过半导体测试设备的数量少于半导体器件的集成输出引脚的较少通道同时测试多个输出引脚。 代表性的发明之一具有这样的结构,即作为具有驱动液晶显示面板的栅极线的功能的半导体器件的LCD驱动器包括:用于将正和负电压的极性反转的异或电路, 驾驶门线; 能够改变和控制高阻抗状态的用于驱动栅极线的输出电路的三态逆变器电路; 以及用于控制异或电路和三态逆变器电路的测试控制端子TEST中的至少一个。 当进行测试时,仅栅极输出的一个端子输出正电压VGH或负电压VGL,另一个端子被设置为高阻抗状态,从而同时测试多个栅极输出。