GE QPH-2D100-S2P: Durable Touch Panel Glass for Industrial HMIs

Core Function of This Touch Panel Glass

The GE QPH-2D100-S2P serves as the primary input interface for industrial touch screens. This touch panel glass detects finger or stylus contact on the display surface. It converts physical touch into electrical signals for the HMI controller. Consequently, the component enables operator interaction with automation systems.

Physical Dimensions and Glass Construction

This touch panel glass measures 210 mm in total width. Its height reaches 160 mm for a standard display format. The glass thickness stands at 3 mm including the anti-glare coating. You will find a chemically strengthened soda-lime glass substrate. The GE QPH-2D100-S2P weighs approximately 320 grams for secure mounting.

Touch Technology and Sensor Design

The GE QPH-2D100-S2P uses analog resistive touch sensing technology. Two transparent conductive layers face each other with a small air gap. Pressure from a finger or stylus brings these layers into contact. The controller then measures voltage division on both X and Y axes. This design provides accurate touch location detection across the entire active area.

Active Area and Resolution Specifications

This touch panel glass features a 190 mm wide by 140 mm high active area. The active area corresponds to a standard 7-inch diagonal display. Touch resolution reaches 1,024 x 1,024 points across the sensing surface. Linearity error stays below 1.5% for consistent accuracy. The glass responds to activation forces as low as 20 grams.

Electrical Characteristics and Interface

The GE QPH-2D100-S2P includes four conductive silver traces on a flexible tail. Two traces carry the X-axis voltage and sense signals. Two traces handle the Y-axis measurement and return path. The tail connects to the HMI controller via a standard 4-pin ZIF connector. Operating voltage for the resistive film reaches 5 V DC maximum.

Durability and Environmental Resistance

This touch panel glass withstands millions of touches without performance loss. The outer surface features a hard coating with 3H pencil hardness rating. An anti-glare treatment reduces reflections from ambient lighting. The glass resists mild chemicals including oils and cleaning agents. Operating temperature spans from -10°C to +60°C for industrial use.

Mounting and Optical Characteristics

The GE QPH-2D100-S2P mounts directly in front of an LCD display. A foam adhesive gasket attaches the glass to the bezel assembly. Light transmission through the glass reaches 80% for good display visibility. The anti-glare surface reduces specular reflections from overhead lights. The glass adds minimal parallax error between touch point and displayed image.

Installation and Replacement Notes

You must clean the LCD surface thoroughly before installing this glass. Then, peel the protective liner from the foam adhesive gasket. Align the glass carefully with the display active area. Press firmly around the perimeter to secure the adhesive bond. The flexible tail should fold gently without sharp creases or tension.