Display module inspection device and display module inspection method using the same
AssigneeSamsung Display Co., Ltd.
InventorsHYEONSEO CHO, MIN-HONG KIM, SEUNGROK LEE
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Abstract
Disclosed is a display module inspection device including a waveform generator configured to generate a first test signal and to transmit the first test signal to the display module, and a noise sensing unit configured to receive a second test signal from the display module, wherein the second test signal is indicative of a mutual capacitance between a plurality of sensing electrodes of the display module, wherein the noise sensing unit is configured to calculate a capacitance value based on the mutual capacitance and the first test signal, and wherein the capacitance value is indicative of noise.
Claims20
A display module inspection device comprising:
- a waveform generator configured to generate a first test signal and to transmit the first test signal to a display module;
- and
- a noise sensing unit configured to receive a second test signal from the display module,
- wherein the second test signal is indicative of a mutual capacitance between a plurality of sensing electrodes of the display module,
- wherein the noise sensing unit is configured to calculate a capacitance value based on the mutual capacitance and the first test signal,
- and wherein the capacitance value is indicative of noise.
A display module inspection device comprising:
- an inspection board electrically connected to a display module, the display module including a sensor layer including a plurality of sensing electrodes;
- a waveform generator electrically connected to the inspection board and configured to generate a first test signal and to transmit the first test signal to the display module;
- and
- a noise sensing unit electrically connected to the inspection board and configured to receive a second test signal from the display module,
- wherein the second test signal is indicative of a mutual capacitance between the plurality of sensing electrodes.
A method of inspecting a display module, the method comprising:
- mounting, on an inspection board, a display module including a display layer, a sensor layer including a plurality of sensing electrodes, a first wire electrically connected to the display layer, and a second wire electrically connected to the sensor layer;
- transmitting, by a waveform generator electrically connected to the inspection board, a first test signal to the first wire;
- receiving, by a noise sensing unit electrically connected to the inspection board, a second test signal from the second wire, the second test signal being indicative of mutual capacitance between the plurality of sensing electrodes;
- and
- detecting, by the noise sensing unit, noise of the display module based on the second test signal.
Dependencies are inferred from the claim text.