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) | |
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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? |
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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 |
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Immunity to EMI | Better | Good: Can be improved with additional options which increase cost. |
Appearance | with glass or without glass can work | with glass |
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Cover Glass | Available on back of frame |
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Immunity to Objects/Contaminants on Screen | Objects will effect touch function |
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Resistant to Chemical Cleaners | Yes |
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Durability | Good | Good |
Impact Ball Drop Test | Yes | Yes , cover glass are all tempered glass |
Scratch Resistance |
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Life time | Depend on IR tube quality |
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