a test head

Abstract

The invention relates to the technical field of display panel testing, and discloses a test pressure head, which includes a test assembly and a pressure block. The test assembly includes a connection assembly and a probe assembly. The probe assembly is arranged on the connection assembly. The FPC board of the through part, and the conduction surface of the test conduction part of the FPC board forms an inclined angle with the crimping surface of the DUT; the pressure block is configured to fix the test component and can detect the height of the test component under pressure . By making the conduction surface of the test conduction part of the FPC board and the crimping surface of the DUT form an inclined angle, the FPC board can be cut into the DUT and contact the DUT obliquely, and the way of inclined contact is increased. The contact area between the gold finger of the FPC board and the metal contact of the display panel is ensured, the contact effect between the gold finger and the metal contact is ensured, and the possibility of floating contact is avoided; the FPC board can be precisely controlled by detecting the height of the test component pressing down The crimping pressure with the DUT can measure the precise impedance value of the display panel.

Description

technical field [0001] The invention relates to the technical field of display panel testing, in particular to a testing pressure head. Background technique [0002] In the field of display technology, organic light-emitting diode (Organic Light-Emitting Diode, OLED) display technology has the advantages of self-illumination, wide viewing angle, almost infinitely high contrast, low power consumption, high response speed, etc., and is widely used in TVs, In the display panels of mobile phones, tablet computers, etc. With the continuous improvement of people's demands on the control of electronic devices, display panels with touch functions are attracting more and more attention. [0003] For a display panel using OLED technology, multiple parameters of the display panel, such as color saturation and impedance value, need to be tested during the production process. Among them, the impedance value is an important index to measure whether the display panel is qualified, and th...

AI Technical Summary

Problems solved by technology

[0005] During the process of crimping the display panel with the indenter, the contact effect between the gold finger and the metal contact will affect the accuracy of the detected impedance value

When the existing indenter crimps the display panel, the gold finger is in direct contact with the metal contact, and the contact area between the gold finger and the metal contact is small or incomplete, resulting in inaccurate measured impedance values

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