Display panel and method of testing display panel
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United States of America Patent
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May 24, 2022
Grant Date -
Sep 24, 2020
app pub date -
Mar 17, 2020
filing date -
Mar 21, 2019
priority date (Note) -
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status (Latency Note)
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Abstract
A method of testing a display panel including a pixel coupled to first, second, and third power lines, a data line, scan lines, an emission control line, and a test line, the method includes: applying a first power supply voltage to the first power line; applying a test voltage having a turn-on voltage level to the second power line; applying a scan signal having a turn-on voltage level sequentially to the scan lines and an emission control signal having a turn-on voltage level to the emission control line; applying a gate signal to the test line to turn on a test transistor coupled between two electrode of a light emitting element included in the pixel; measuring a sensing voltage output through the data line; and determining whether the pixel is defective, based on a voltage level of the measured sensing voltage.
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