Writer: adminRelease Time: 2025-06-12 03:27Browse: 16
PCAP (short for Projected Capacitive) touchscreens are a widely used touchscreen technology, especially in smartphones, tablets, kiosks, and industrial displays.
PCAP touchscreens detect touch using changes in capacitance. Your body is conductive, so when your finger (or a conductive stylus) approaches the screen, it disturbs the electrostatic field at that point.
A PCAP screen consists of:
A glass substrate (sometimes layered with a cover glass)
A grid of transparent conductive electrodes (often indium tin oxide - ITO) arranged in rows and columns
An insulating layer between those rows and columns
Electrode Grid Creates a Field
A controller applies voltage to the grid, generating an electrostatic field at the intersections of the rows and columns.
Touch Causes Capacitance Change
When a finger gets near the glass, it draws a small amount of current from the field, altering the local capacitance.
Controller Detects Location
The touchscreen controller measures this change across the grid and calculates the exact position of the touch by analyzing where the capacitance changed.
Multi-Touch Capability
Since each intersection is monitored independently, PCAP allows simultaneous detection of multiple touches with high accuracy.
Highly durable (can work behind thick glass or plastic)
Supports multi-touch
Excellent clarity and response
Works even with cracks or surface damage (to an extent)
Doesn’t work well with regular gloves (unless designed to)
Sensitive to electrical noise
More expensive to produce than resistive touchscreens
Yourtiech Custom
PCAP Touch Displays product links for reference:
https://www.youritech.com/products/capacitive-touch-displays/
Shenzhen Youritech Technology Co.,Ltd. focuses on the research and development ,design ,customization and production of LCD,OLED,touch screen and other products.
website:https:www.youritech.com
Contact information:[email protected]
