[Industry 9] Electrical Testing of Touch Panels/Bear Boards
Electrical Testing of Touch Panels/Bear Boards
1. Overview
Various touch panels such as smartphones and tablets we touch. They detect electrical changes and recognize that a touch has been made. Conductivity testing of bare boards, which are manufactured by pattern printing, and touch panels is performed by cable harness testers can be applied to achieve this efficiently.
2.Testing touch panels and bare boards with cable harness testers
Cable harness testers are good at testing multiple points at high speed. This advantage can be utilized for testing bare boards and touch panels. The inspection can be realized at a considerably lower cost than with a dedicated checker.
3. Touch panel methods and testing
As an example, we introduce the resistive film method. This is a touch panel consisting of two electrode membranes with conductive patterns printed on them, and it functions by detecting a short circuit between the membranes when touched. As electrical testing, it is necessary to measure and determine the wiring, resistance, and insulation resistance of the membrane. A short bar is placed at the end of the membrane to measure the resistance value, and the insulation testing is performed after the short bar is released. Electrical tests other than the resistive film method can also be realized. Translated with www.DeepL.com/Translator (free version)
4.Bare board electrical testing
Bare board is a printed circuit board without mounted components. It is necessary to check for electrical errors in conductive patterns. Test for continuity by using pin probes at the end of the board. Conduction resistance must be less than 1Ω, and non-conduction must be greater than 1MΩ. Harness testers can also measure resistance as low as the 0.01 Ω level and insulation resistance as high as the 2000 MΩ level.
5. Inspection equipment suitable for touch panels and bare boards and customization
For electrical testing of touch panels and bare boards, the NMG+ series harness multitesters are the best choice. All required test items can be performed. If necessary, operational customization can be performed to realize smooth testing. We can also customize test specifications to meet the severe testing requirements. We have experience in testing with short bars and customizing to work with PLCs. Please contact NAC CORPORATION for quality and efficient testing.
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