Method and apparatus for inspecting display device
AssigneeSamsung Display Co., Ltd.
InventorsJun Young Ko, Tae Joon Kim, Eun Sol Seo, Yu Jin Sin, Jun Seong Lee, Jae Woo Choi
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Abstract
A method for inspecting a display device (which includes a pixel electrode and a touch sensor overlapping the pixel electrode) includes: adjusting an impedance value of a variable impedance circuit of an inspection apparatus according to a model of the display device; driving a power source generator of the inspection apparatus; supplying a pixel voltage to the pixel electrode through an output terminal connected to the variable impedance circuit; driving the touch sensor; and detecting a defect related to the pixel electrode based on sensing signals output from the touch sensor.
Claims15
A method for inspecting a display device including a pixel electrode and a touch sensor overlapping the pixel electrode, the method comprising:
- adjusting an impedance value of a variable impedance circuit of an inspection apparatus according to a model of the display device;
- driving a power source generator of the inspection apparatus;
- supplying a pixel voltage to the pixel electrode through an output terminal connected to the variable impedance circuit;
- driving the touch sensor;
- and
- detecting a defect related to the pixel electrode based on sensing signals output from the touch sensor.
An apparatus for inspecting a display device, the apparatus comprising:
- a power source generator configured to generate a pixel voltage of the display device;
- and
- a variable impedance circuit electrically connected to an output terminal of the power source generator,
- wherein the variable impedance circuit comprises:
- a variable resistance circuit electrically connected between the output terminal of the power source generator and an output terminal of the variable impedance circuit;
- and
- a variable capacitor circuit electrically connected between the output terminal of the power source generator and a reference voltage source.
Dependencies are inferred from the claim text.