An external controller is big especially for small sizes (like 7"W, 10.1"W etc) but it can be enough for medium sizes. At Rocktouch we evaluate different solutions, and at this stage for A,X and H2O lines we decide to go for COF from 7"W up to 21.5"W because we think customers they like to have compact design and also like fast and rugged plug in solution for industrial application. Few pins for connection and big Pitch for easy insertion without the needs to plug in 30... up to 120 pins with very small pitch, using our COF customer only need to plug in one flat with 6 pins only and 1 mm pitch,easy and fast solution. Main features of Rocktouch Chip On Flat are:
Best Scalability over all the sizes and also between product lines. Due of the Projected Capacitive structure, if you want to have your touch bring the best performance the sensor design must follow the IC controller guideline. | ![]() |
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Controller
The Chip On Flat Design (COF)