Touch Technologies

When the screen is touched, the conductive coating makes electrical contact with the coating on the glass. The voltages produced are the analog representation of the position touched. The controller digitizes these voltages and transmits them to the computer for processing.

AccuTouch five-wire technology utilizes the bottom substrate for both X and Y-axis measurements. The flexible coversheet acts only as a voltage-measuring probe. This means the touchscreen will continue working properly even with non-uniformity in the cover sheet's conductive coating. The result is an accurate, durable, and reliable touchscreen that offers drift-free operation. AccuTouch screens are sealed against contamination and moisture. The cover sheet is sealed to the glass substrate with an industrial-grade caulk. This prevents the wicking of fluid between the coversheet and glass. Also, AccuTouch screens are not air vented, thereby preventing fluid ingress through an air vent.

Features

• Stable, drift-free operation-for touch response that's always accurate
• Fast touch response
• Finger, fingernail, gloved-hand, pen, swipe-card, or any other stylus activation
• Durability; tested to over 35 million touches on a single point
• Sealability to NEMA 4/4X/12, IP65
• Continues to work with liquids and other contaminants on the screen

Applications

• Point-of-sale(POS) terminals
• Voting machines
• Industrial automation
• Medical equipment
• Office automation
• Retail automation
• Pharmacy automation

Both IntelliTouch and SecureTouch are surface-wave touch technologies. Both have a glass overlay with transmitting and receiving piezoelectric transducers for both the X and Y axes. The touchscreen controller sends a five-megahertz electrical signal to the transmitting transducer, which converts the signal into ultrasonic waves within the glass. These waves are directed across the front surface of the touchscreen by an array of reflectors. Reflectors on the opposite side gather and direct the waves to the receiving transducer, which reconverts them into an electrical signal—a digital map of the touchscreen surface.

When you touch the screen, you absorb a portion of the wave traveling across it. The received signal is then compared to the stored digital map, the change recognized, and a coordinate calculated. This process happens independently for both the X and Y axes. By measuring the amount of the signal that is absorbed, a Z-axis is also determined. The digitized coordinates are transmitted to the computer for processing.

Features

• Pure-glass touchscreen for superior image clarity, brightness, and light transmission
• Durable, scratch-resistant glass surface
• Operation that's unaffected by static water droplets and scratches on the screen
• Stable, drift-free operation-for touch response that's always accurate, even in electrically noisy environments
• Touch response faster than human perception
• Finger or gloved-hand activation

Applications

• Kiosks
• Ticketing machines
• Gaming machines
• Light industrial
• Office automation

The CarrollTouch infrared(IR) technology uses a small frame around the display with LEDs and photoreceptors on opposite sides, hidden behind an IR-transparent bezel.

The Controller sequentially pulses the LEDs to create a grid of IR beams. A touch obstructs one or more beams that identify the X and Y coordinates.

Features

• Shock resistance
• Finger, gloved hand, or any other stylus activation (>6 mm)
• Stable, drift-free operation for an accurate touch response
• Flexible design that can incorporate almost any material for display protection
• Sealability to NEMA 3/3R/4/5/12/12K/13, IP65
• Operation unaffected by direct sunlight

Applications

• Food processing
• Industrial automation
• Medical equipment
• In-vehicle and transportation
• Point-of-sale (POS) terminals

The surface capacitive touchscreens provide a solution for customers seeking an alternative to the currently available capacitive options. The transparent protective coating makes the sensor resistant to scratches and abrasions. Touch performance is unaffected by everyday abuse and mishaps such as dirt, dust, condensation, liquid spills, contaminants, or cleaning solutions. And the Elo-designed controller responds to quick, light touches, and operates drift-free even in areas of poor grounding.

Surface capacitive technology consists of a uniform conductive coating on a glass panel. During operation, electrodes around the panel's edge distribute low voltage uniformly across the conductive layer creating a uniform electric field. A finger touch draws current from each corner of the electric field. The controller calculates touch location coordinates by measuring the current and transmits it to the computer for processing.

Features

• Elo patented a narrow Z-border for greater linearity
• Fast, sensitive touch response with excellent dragging performance
• Compatible with industry-standard protocols including Elo's

Applications

• Point-of-Sale terminals (POS)
• Kiosks
• Gaming/amusement