• change touch screen
  • wall mount touch screen monitor
  • touch panel 28
  • change touch screen
  • wall mount touch screen monitor
  • touch panel 28

Capacitive Touch Types of Touch Panel 21.5 Inch | Manufacture

This 21.5-inch touch module adopts industrial-grade G+G structure. Optimized comprehensively in environmental resistance, touch performance and protective structure to adapt to complex industrial working conditions.
MOQ
1pcs
Cover surface hardness
≥6H
Ink adhesion
≥4B
Impact resistance
≥IK07
Support Touch Points
10 points Typ.
Controller Interface
USB Typ.
Controller Supply Voltage
USB 5V Typ.v
Touch Report Rate
≥100Hz
  • change touch screen
  • wall mount touch screen monitor
  • touch panel 28

Description

Specifications:
Touch Response Time ≤25ms
Touch Linearity ±2mm
Display Supply Voltage 5.0 Typ.v
BACKLIGHT Supply Voltage 12.1 Typ.v
Display Power Consumption 15.2 Typ.w
Transmittance >85%
Pixels H×V 1920(X3)*1080
Support Color 16.7M
Contrast Ratio 3000 Typ.
Viewing Angle 89 Typ.
Display Surface Treatment Anti-Glare 3H

How to improve the environmental resistance of this industrial touch module?
1.Equipped with industrial-grade touch IC supporting an ultra-wide temperature range of -40℃ to +85℃. It features built-in native temperature drift compensation circuit, enabling normal startup at low temperatures and stable performance at high temperatures, effectively preventing disconnection and sensitivity fluctuation caused by IC anomalies.

2.Adopt low-drift ITO with resistance fluctuation ≤ 2% across the full temperature range. Paired with high-rigidity glass and substrates resistant to extreme temperatures, it features minimal thermal expansion and contraction, preventing circuit breakage and coordinate drift caused by material tension.

3.Adopt ultra-wide temperature anti-yellowing OCA, which resists cracking at -40℃ and softening or glue flowing at +85℃. The four sides are fully sealed with temperature-resistant sealant, ensuring no delamination or debonding during thermal cycling.

4.All resistors, capacitors, crystals, FPCs, foams and adhesives are industrial-grade components rated for -40℃ to +85℃, maintaining stable parameters without failure under temperature changes.

5.It ensures normal oscillation under extremely low temperatures. The voltage fluctuation is controlled within ±1% across the full temperature range, delivering stable power supply and avoiding signal loss.

6.It is equipped with onboard high-precision temperature sensors to monitor the temperature of the screen and IC in real time. Differential wiring is adopted for touch signals to suppress common-mode interference caused by temperature changes.

7.Additional filtering and protection circuits are integrated to filter out interference signals during temperature cycling, eliminating intermittent disconnection and false touch points.

8.Thermal conductive pads and micro heat dissipation channels are added for high-temperature areas to prevent heat accumulation. Thermal insulation cushions are applied for low-temperature scenarios to slow down rapid temperature drop. Heat insulation baffles are installed near intense heat sources to block thermal radiation.

How to improve water and oil resistance?
1.Adopt high-performance dual-state AF coating. Its water contact angle is ≥110° and oil contact angle ≥80°. Water droplets and oil stains slide off quickly without forming continuous films. The coating features excellent wear and weather resistance, and will not peel off after long-term wiping and operation.

2.Adopt fine AG anti-glare surface to prevent water and oil from spreading continuously and avoid large-area coverage. Coarse matte finish is not used to prevent oil and dirt from accumulating in recesses.

3.Equipped with industrial touch IC built-in water and oil interference suppression module. It enhances anti-interference capability of signal sampling, reduces abnormal capacitance caused by water and grease, and minimizes false touch points fundamentally.

4.Adopt differential electrode layout and high-density sensing electrodes to boost valid signal strength and reduce electric field interference from water and oil. With balanced electrode parameters across the entire area, it maintains consistent recognition for single and multi-touch operations.

5.Magnetic beads and filter capacitors are added to the touch circuit, together with ESD protection circuits. They filter clutter signals induced by water and oil, preventing instantaneous touch jumps and disconnection.

6.A feature recognition model is deployed to identify uniform noise generated by continuous water and thin oil films. It automatically shields large-area false touches while retaining valid human touch operations.

FAQ
1.Q: How does the product perform against water and oil contamination in industrial environments?
A: It adopts dual-state AF coating and fine AG surface to repel water and oil. Meanwhile, dedicated hardware circuits and algorithm models effectively suppress false touches caused by liquid and grease.

2.Q: What are the parameters of the surface AF anti-fingerprint coating?
A: The water contact angle is ≥110° and oil contact angle ≥80°. The coating is wear-resistant and will not fall off after long-term use and wiping.

3.Q: Why choose fine AG surface instead of coarse matte finish?
A: Fine AG surface stops water and oil from spreading continuously, and there are no recesses for dirt and oil to accumulate.

4.Q: What designs are used to resist interference from water and oil on the touch circuit?
A: It uses differential electrodes, magnetic beads, filter capacitors and ESD protection circuits to filter clutter signals and prevent sudden touch jumps and disconnection.

5.Q: Can the product distinguish between real human touches and false touches from water or oil films?
A: Yes. The built-in feature model can identify noise from continuous water and oil films, automatically shield large-area false touches and keep normal touch functions available.

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