What is the main problem to achieve the touch function on PC?
The maximum size of the tablet computer is generally 10.1 inch, and the size of notebook computer and super-thin notebook computer is 13-14 inch, the size of PC display can reach more than 21 inch. The problem of PC touch screen which is as same as notebook computer is that the pass rate drops down while the size goes up. Most touching PC we see in the current market are optical touch panels whose border is thick and there is an obvious gap. Although the capacitive touch panel can reach 120 inch at maximum at the moment, the pass ratio is very low. Any size which is larger than 120 inch only can be adopted the optical sensing approach to achieve the touch function.