This touch monitor is specially developed and manufactured for outdoor applications with IP65 or above waterproof rating and IK10 impact resistance. It effectively prevents screen breakage under violent impact, cuts maintenance costs and extends service lifespan.
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
Touch Report Rate: ≥100hz
Touch Response Time: ≤25ms
Touch Linearity: ±2mm
Display Supply Voltage: 3.3 Typ.v
BACKLIGHT Supply Voltage: 12 Typ.v
Display Power Consumption: 12.5 MAX.w
Transmittance: ＞85%
Pixels H×V: 1920 x 3(RGB) x 1080
Support Color: 16.7M Colors ( RGB 8-bits )
Contrast Ratio: 1000 Typ.
Viewing Angle: 89 Typ.
Display Surface Treatment: Anti-glare
Solutions to Prevent Yellowing & Aging for Long-term Outdoor Touch Monitor Application
1.Select high-alumina-silicon raw glass with built-in cerium ion UV absorbers. The substrate itself blocks short-wave ultraviolet rays ranging from 300 nm to 380 nm to prevent crystalline yellowing of glass after long-term UV irradiation. Ordinary soda-lime glass and non-UV-resistant float glass shall be phased out.
2.Prefer ultra-clear glass substrate with iron content controlled at ≤150ppm for inherently low yellowing tendency.
3.Incorporate inorganic UV-absorbing oxides such as ceria and titania inside the coating layer to block full-spectrum UVA and UVB and prevent ultraviolet penetration into the underlying polarizer.
4.Adopt ceramic sputtering coating instead of organic ink coating. The inorganic film features outstanding UV resistance against prolonged sunlight exposure and avoids yellowing caused by organic resin aging within one to two years.
5.Control the transmittance of 380nm ultraviolet light below 5% after coating treatment to drastically cut UV flux entering the LCD and polarizer layers from the source.
6.Adopt dedicated UV-resistant weatherproof polarizer: UV absorbers are added to both PVA polarizing layer and TAC protective film, and modified weather-resistant triacetate is used for TAC film. The product passes 500-hour QUV accelerated UV aging test without obvious yellowing, equivalent to 2 years of outdoor service life.
7.Adopt full lamination structure. UV-blocking OCA optical adhesive is applied between cover glass and polarizer, with organic UV absorbers blended into OCA glue to intercept residual ultraviolet rays secondarily and further protect the PVA polarizing layer of the polarizer.
8.High-temperature crystallized and UV-oxidation-resistant ITO coating is selected for the ITO film. It resists oxidation blackening, sheet resistance drift and transmittance degradation under long-term UV exposure.
9.UV-curable anti-oxidation silver paste is adopted for circuit traces with added anti-oxidant additives. This prevents UV-induced silver paste blackening and optical deterioration, so as to avoid local touch open circuits and sensitivity degradation caused by degraded circuit transmittance.
10.The complete machine casing is designed with light-shielding structure: shielding lips are arranged around the screen frame to block oblique side UV radiation from entering the inner interlayer.
FAQ
Q1: Why does the touch display turn yellow after long-time outdoor installation?
A: Yellowing is mainly triggered by long-term ultraviolet radiation causing aging of glass, polarizer, glue and circuit materials. Our customized anti-UV material configuration can effectively solve this problem.
Q2: What core measures are used to prevent glass yellowing?
A: We adopt cerium-doped high-alumina-silicon ultra-white glass plus inorganic ceramic sputtering UV blocking coating, limiting 380nm UV transmittance below 5% to avoid substrate crystalline yellowing.
Q3: Is the polarizer customized for anti-yellowing as well?
A: Yes. Weather-modified TAC and UV-additive-blended PVA polarizer are equipped, which keeps no obvious yellowing after 500h QUV accelerated aging test.
Q4: How to protect internal OCA and ITO from UV damage?
A: Full lamination with UV-blocking OCA is applied; high-temperature crystallized UV-resistant ITO and anti-UV silver paste are matched to prevent oxidation blackening and touch failure.
Q5: Apart from raw materials, are there structural designs against UV aging?
A: The housing is fitted with peripheral shading lips to block oblique side UV from penetrating into inner interlayer and slow down internal component aging.
