Measuring Touch screens dimensions
Touch screens are used in various tools such as smartphones and tablet PCs, and allow for intuitive operation. There are a wide variety of touch screen panel structures and methods. Sinto’s measuring machines are used in forming electrodes on glass panel or film for “resistive” and “capacitive” touchscreens that electrically detect the position touched.
Measurement Outline
As touchscreens are layered over displays such as LCDs or OLEDs, in general transparent electrodes (ITO) are used in the display area. Measurements are performed for the position and width of these ITOs and metal electrodes. Because ITOs are difficult to see with standard lighting equipment, lighting with wavelengths suited to these characteristics are used to generate image contrast. In addition, image processing software capable of detecting low-contrast edges increase the stability of the ITO measurements.
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