Working principle and characteristics of industrial touch displays
News 2025-11-24
Industrial touch displays are intelligent interfaces that connect people and machines through touch-screen industrial displays. They are intelligent operation display terminals that replace traditional control buttons and indicator lights. They can be used to set parameters, display data, and monitor equipment status. More convenient, faster, and more expressive, they can be simplified into PLC control programs. The powerful touchscreen creates a user-friendly human-machine interface. As a special computer peripheral, the touchscreen is currently the simplest, most convenient, and natural way for humans to interact with machines. It gives multimedia a brand-new look and is a highly attractive new multimedia interactive device.
II. Industrial Touch Display Performance
Connects to Schneider Electric Magelis Modular iPCs and third-party PCs (including personal/office PCs). 15″ TFT XGA 1024 x 768
19″ TFT SXGA 1280 x 1024
Supports serial port or USB interface touch signal input
100~220V wide voltage AC power input
The 15″ monitor has the same mounting dimensions as the Magelis Smart&Compact IPC
UL certified 508, CSA Certification
III: Application Scope of Industrial Touch Displays
Public Infrastructure
Automotive Industry
Food and Beverage
Machinery Automation
IV: Principles of Industrial Touch Displays
A touch screen system generally consists of two parts: a touch screen controller (card) and a touch detection device. The main function of the touch screen controller (card) is to receive touch information from the touch detection device, convert it into touch point coordinates, and then send it to the CPU. It can also receive and execute commands from the CPU. The touch detection device is generally installed at the front of the display, and its main function is to detect the user’s touch position and transmit it to the touch screen control card. Industrial touch screens are highly flexible, allowing for the addition of functional modules according to design requirements. They are highly expandable and can meet the needs of complex process control. Furthermore, it can even communicate directly with PLCs via network systems, greatly facilitating the processing and transmission of control data and reducing maintenance.
V. Characteristics of Industrial Touch Displays
Micro-embedded industrial touch screens/industrial touch displays are highly transparent, directly impacting the visual effect of the touchscreen. Transparency varies in degree. Infrared touchscreens and surface acoustic wave touchscreens, separated only by a single layer of pure glass, are among the most transparent. Other touchscreens require careful consideration in this regard. “Transparency” is a very general concept in the touchscreen industry. Many touchscreens are multi-layered composite films, and simply describing their visual effect as transparent is insufficient. It should include at least four characteristics: transparency, color distortion, reflectivity, and clarity. These can be further subdivided; for example, reflectivity includes specular reflection and diffraction reflection. However… The diffraction and reflection on a touchscreen surface are not as severe as those on a CD. For users, these four measurements are generally sufficient.
Due to the existence of transmittance and wavelength curves, images viewed through a touchscreen inevitably experience color distortion compared to the original image. For static images, this distortion is only noticeable, but for dynamic multimedia images, the experience is less comfortable. Therefore, the lower the maximum color distortion in the image, the better. Transparency, as commonly referred to, is only the average transparency of the image; naturally, higher is better.
Reflectivity mainly refers to the overlapping of light and shadow on the image due to specular reflection, such as shadows of people, windows, and lights. Reflectivity is a negative effect of touchscreens, and the lower the better. It affects browsing speed and, in severe cases, can even make it impossible to recognize images and characters. Highly reflective touchscreens are less effective in certain environments. Due to limitations, the on-site lighting setup also needed to be adjusted. Most touchscreens with glare issues offer an alternative surface-treated model: a matte touchscreen, also called an anti-glare type. These are slightly more expensive, and the anti-glare type significantly reduces reflectivity, making them suitable for well-lit halls or exhibition spaces. However, the light transmittance and clarity of the anti-glare type are also significantly reduced. Regarding clarity, some touchscreens, after being fitted with this type, result in blurry text, indistinct image details, and an overall blurry, unclear screen – this is due to poor clarity. Clarity issues are mainly caused by the repeated reflection and refraction of light between the multi-layer film structure of the touchscreen. Additionally, the matte surface of anti-glare touchscreens also contributes to reduced clarity. Poor clarity can easily cause eye fatigue and even harm to the eyes; careful consideration is needed when purchasing a touchscreen.
Hangzhou LEEHON Technology Co., Ltd., as a provider of LCD display driver solutions for the industrial field, has established in-depth cooperative relationships with many leading global LCD panel manufacturers such as BOE, TIANMA, IVO, AUO, Innolux, and Kyocera, and professionally supplies multi-brand, full-series industrial-grade LCD displays and customized solutions.
