Touch screen controllers are data converters which convert user actions on a screen to signals that can be read by a device. These controllers plug into sensors that communicate touch actions electronically, enabling the use of a touch screen device as an input mechanism in place of a mouse or keypad.
What are touch screen controllers used for?
Touch screen controllers are used in ATMs and point of sale equipment as well as in smart technology devices such as tablets, mobile phones, laptops and Kindles. Touch screen controllers are also standard in the manufacturing and engineering industries where display screens act as control panels for machinery and specialised equipment.
Types of touch screen controllers
Touch screen controllers come in two types: capacitive and resistive.
Capacitive touch screen controllers are compatible with screen panels coated with indium tin dioxide. The film coating conducts a constant electrical current across a sensor to pick up on any change in electrical charge when the screen is touched.
Resistive touch screen controllers produce an electrically resistive layer. The changes in resistance on this layer are identified as touch events, which are picked up by the controller for processing of data.
Description:
A range of Programmable System-on-chip (PSoC®) products from
Cypress Semiconductor incorporating analogue sub-systems with capacitive sensing hardware. These configurable devices include an on-board MCU and are aimed primarily at capacitive touch screen applications.
Description:
The MTCH102, MTCH105 and MTCH108 devices from Microchip
are Capacitive Touch/Proximity Controller ICs that convert touch or proximity detection into a simple digital output. The sensitivity level of the controller is configurable and a low-power mode included, allowing for easy ...
Description:
A range of Programmable System-on-chip (PSoC®) products from
Cypress Semiconductor incorporating analogue sub-systems with capacitive sensing hardware. These configurable devices include an on-board MCU and are aimed primarily at capacitive touch screen applications.
Description:
The BU21023MUV is 4-wire resistive touch screen controller
IC. 4-wire resistive touch screen interface3.0V single power supply4-wire SPI interface / 2-wire serial interfaceSelectable download way of CPU firmware (Host or EEPROM)Two points and gesture detectionApplications:Coin Processing MachinesBarcode ...
