What is the differences of Infrared and PCAP touch screen ?
Infrared vs. Projected Capacitive ( IR vs PCAP )
A Infrared touch screen is made by IR tube. A capacitive touch screen consists of an insulator coated with a transparent conductor. Use the table below to determining which type of touch suits your project best.
|Infrared (IR)||Projected Capacitive (PCAP)|
|Same size Cost||Lower cost||Size bigger cost higher|
|Touch Screen Control Type||a finger , or other solid objects||Can sense proximity of finger.|
|Need to touch with thick gloves or an object?||Dependent on the conductive nature of human body. PCAP only works with thin gloves or a finger.|
|Touch Points||Dual and Multitouch||Dual or Multi-Touch Possible|
|False Touch Rejection||If any solid objects on screen , it will be as false action|
|Immunity to EMI||Better||Good: Can be improved with additional options which increase cost.|
|Appearance||with glass or without glass can work||with glass|
|Cover Glass||Available on back of frame||Cover glass can be with imprinted black border and logo.|
|Immunity to Objects/Contaminants on Screen||Objects will effect touch function||If water gets on the screen, PCAP can mistake it for a touch.|
|Resistant to Chemical Cleaners||Yes|
|Impact Ball Drop Test||Yes||Yes , cover glass are all tempered glass|
|Life time||Depend on IR tube quality|