Method for measuring contact impedance of liquid crystal display panel junction and liquid crystal display panel
A liquid crystal display panel and contact impedance technology, which is applied to measuring devices, measuring electrical variables, and measuring resistance/reactance/impedance, etc., can solve the problem of inability to accurately measure the contact impedance of liquid crystal display panel conductors, etc.
Active Publication Date: 2022-04-08
SHENZHEN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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Problems solved by technology
[0005] In order to solve the problem that the current test method cannot accurately measure the contact impedance between different conductors in the circuit of the liquid crystal display panel, the embodiment of the present application provides a method for measuring the contact impedance of the joint point of the liquid crystal display panel, the liquid crystal display panel Comprising a terminal array and a test array, the terminal array includes at least two terminal array points, and the test array includes at least four test array points; the measurement method includes:
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[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Apparently, the described embodiments are only some of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making creative efforts belong to the scope of protection of this application.
[0030] refer to figure 2 , figure 2 It is a schematic diagram of the contact impedance measurement method of the joint point of the liquid crystal display panel 4 in the embodiment of the present application. The embodiment of the present application provides a contact impedance measurement method of the joint point of the liquid crystal display panel 4. The liquid crystal display panel 4 includes a terminal array 1 and a test array 2 , terminal array 1 includes at least two ...
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The embodiment of the present application provides a method for measuring the contact impedance of a liquid crystal display panel junction and a liquid crystal display panel. Conductive wires are used to connect at least two terminal array points of the terminal array in series to form a series circuit. The conductive wires are connected to each terminal array point. The joints of the four connecting wires are used to connect any two joints to two test array points in the test array respectively, and measure the first connection between the two test array points. An impedance value; one end of the other two second connecting wires in the four connecting wires is also respectively connected to the other two test array points in the test array and the other ends are connected to each other, and the second end between the other two test array points is measured. Two impedance values, since the sum of the impedances of the two first connecting wires is equal to the sum of the impedances of the two second connecting wires, the difference between the first impedance value and the second impedance value can be used to accurately obtain any two impedances in the series circuit. Contact resistance between joints.
Description
technical field [0001] The embodiments of the present application relate to the field of display technology, and in particular to a method for measuring contact impedance of joints of a liquid crystal display panel and a liquid crystal display panel. Background technique [0002] In the manufacturing stage of the liquid crystal display panel, in order to monitor the characteristic value of the effective light-emitting area of the liquid crystal display panel, some test keys will be designed around the surface of the liquid crystal display panel, through which to monitor the circuit between different conductors of the liquid crystal display panel RC characteristic of contact impedance. [0003] refer to figure 1 , figure 1 It is a schematic diagram of a conventional method for measuring contact impedance of a junction point of a liquid crystal display panel. At present, test keys are generally set in the area around the surface of the liquid crystal display panel, and th...
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IPC IPC(8): G01R27/02G09G3/00
CPCG01R27/02G09G3/006
Inventor 刘林峰
Owner SHENZHEN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD