Specifications:
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
USB 5V Typ.:≥100Hz
Touch Response Time:≤25ms
Touch Linearity:±2mm
Display Supply Voltage:3.3 Typ.v
BACKLIGHT Supply Voltage:12 Typ.v
Transmittance:＞85%
Support Color:16.7M / 262K
Viewing Angle:89 Typ.
Display Surface Treatment: AG type, 3H hard coating
Solutions to Touch Malfunctions of HMI Display Touch Screen Caused by Water Stains
1.Add chemically resistant modified AF coating, resistant to cutting fluids, emulsions, and weak acid-alkaline cleaning solutions; no peeling or whitening after long-term immersion.
2.Real-time baseline capacitance acquisition. Automatically raise touch trigger threshold when water vapor causes baseline drift; thin water films will not be recognized as touch inputs. Sensitivity automatically recovers after drying.
3.Identify and discard irregular random drift trajectories, lock stable touch coordinates to eliminate cursor jitter; restrict abnormal multi-point reporting within a short period.
4.Add shielding layer to touch FPC; implement reliable single-point grounding for cover metal frame and housing to rapidly dissipate stray charges generated by water film and reduce electrode signal distortion.
5.Install foamed silicone sealing ring / waterproof foam between cover plate and housing with thickness compression rate over 30%; prevent water mist and cutting fluid from seeping into the screen through gaps and reduce condensation inside the cover plate.
6.Install water baffles and diversion grooves on the top of the screen to directly drain liquid to the bottom of the equipment during spray washing and avoid liquid flowing over the touch glass.
7.Adopt fully laminated G+G capacitive touch panels to replace G+F/G+F+F structures. The fully laminated design eliminates air gaps, preventing water vapor from forming interlayer water films between the cover glass and sensor layer—interlayer water accumulation is a major hidden source of signal drift.
FAQ
1.Q: Can this touch screen work stably under long-term immersion in cutting fluid and weak acid-base cleaning fluid?
A: Yes. It is coated with chemically resistant modified AF coating, which will not peel or whiten after long-term contact with cutting fluids, emulsions and weak acid-alkaline washing liquids.
2.Q: Will water mist or thin water film on the glass cause false touch triggers?
A: No. The system collects baseline capacitance in real time and automatically increases the touch threshold when baseline drifts due to moisture. Thin water films won’t be recognized as touch inputs, and sensitivity will recover automatically once dry.
3.Q: How does the product solve cursor jitter caused by signal drift?
A: It identifies and filters out irregular random drift tracks, locks stable touch coordinates to eliminate cursor jumping, and limits abnormal multi-point reports within a short time window.
4.Q: What structural designs prevent liquid and moisture from penetrating the screen interior?
A: Multiple waterproof designs are adopted: water baffles and diversion grooves on the screen top; foamed silicone sealing rings between cover and housing with over 30% compression rate; single-point grounded shielding structure on touch FPC to discharge stray charges quickly. Besides, fully laminated G+G structure removes air gaps to avoid interlayer condensed water films.
5.Q: Why choose fully laminated G+G instead of G+F or G+F+F touch panels?
A: The fully bonded G+G design has no air layer between cover glass and sensor layer, so water vapor cannot be trapped to form interlayer water films. Interlayer water accumulation is the primary hidden cause of touch signal drift for film-type touch structures.
