Display panel and method of testing the same
AssigneeSamsung Display Co., Ltd.
InventorsWon-Kyu Kwak, Hwan-Soo Jang, Seung-Kyu Lee
Life of this patent
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Abstract
A display panel includes: a display including pixel columns electrically connected to data lines; a non-display area adjacent the display; a test circuit configured to receive a lighting test signal passing through at least a portion of the non-display area and to transfer the lighting test signal to the data lines in response to a test control signal; and a switch configured to receive a data signal from an external component and to transfer the data signal to the data lines in response to a switching signal.
Claims20
A display panel comprising:
- a display comprising pixel columns electrically connected to data lines;
- a non-display area adjacent the display;
- a test circuit configured to receive a lighting test signal passing through at least a portion of the non-display area and to transfer the lighting test signal to the data lines in response to a test control signal;
- and
- a switch configured to receive a data signal from an external component and to transfer the data signal to the data lines in response to a switching signal.
A display panel comprising:
- a display comprising pixel columns electrically connected to data lines;
- a non-display area adjacent the display;
- a first test circuit configured to receive a first lighting test signal passing through at least a portion of the non-display area and to transfer the first lighting test signal to the data lines in response to a first test control signal;
- a switch configured to receive a data signal from an external component and to transfer the data signal to the data lines in response to a switching signal;
- a second test circuit electrically connected to the switch in parallel and configured to supply a second lighting test signal to the data lines in response to a second test control signal;
- and
- a driving integrated circuit configured to generate the first test control signal, the second test control signal, and the switching signal.
A method of testing a display panel, the display panel comprising a display comprising pixel columns electrically connected to data lines and a non-display area adjacent the display, the method comprising:
- supplying a first lighting test signal passing through at least a portion of the non-display area to a first test circuit that transfers the first lighting test signal to the data lines;
- transferring a reference signal being supplied from a driving integrated circuit to the data lines using a switch;
- and
- transferring the first lighting test signal to the data lines using the first test circuit.
Dependencies are inferred from the claim text.