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 |
|
| Durability | Good | Good |
| Impact Ball Drop Test | Yes | Yes , cover glass are all tempered glass |
| Scratch Resistance |
|
|
| Life time | Depend on IR tube quality |
|
