Patent ID: 11860204
Assignee: TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 8:
9. A detection method for impedance of a display device, comprising:
disposing a chip-on-film between a display panel and a circuit board, wherein the chip-on-film is electrically connected to the display panel and the circuit board, the chip-on-film comprises a plurality of pins, the plurality of pins comprise a plurality of conducting pins and test pins, and the circuit board comprises a first detection part and a second detection part;
electrically connecting any one of the conducting pins and the test pins by test wires;
electrically connecting the first detection part and at least one conducting pin, and electrically connecting the second detection part to the test pins; and
detecting the first detection part and the second detection part to detect the impedance;
wherein the test wires comprise a first sub-test wire, and the test pins comprise a first sub-test pin;
the step of electrically connecting any one of the conducting pins and the test pins by the test wires comprises:
disposing the first sub-test wire on the chip-on-film, and connecting one end part of the first sub-test wire to the first sub-test pin, and connecting the other end part of the first sub-test wire to any one of the conducting pins;
wherein the pins comprise a wire and a ground wire, the ground wire is disposed on one side of the plurality of pins, the wire is disposed on the other side of the plurality of pins, the wire is insulated from the pins, and the wire is grounded, the ground wire is insulated from the pins, and the ground wire is grounded;
wherein the first sub-test pin is electrically connected to the conducting pins by the first sub-test wire, the conducting pins electrically connected to the first sub-test pin is disposed away from the first sub-test pin, the first sub-test wire is disposed on the side near the circuit board.