17" projected capacitive touch screen
USD $90 - $97 /Piece
Min.Order:1 Piece
Nanjing Defi Software Technology Co., Ltd.
DEFI 17" projected capacitive touch screen it is a Projected Capacitive Touch Panel with USB interface to support
and compatible with WIN7/8/10 O/S for multi-touch( 10points ) application.
Capacitive Touch Panel
- A wide range of capacitive touch screens
- Annual capacity 3million capacitive touchscreens
- Highest resolution, sensitive and fast response
- Support zoom in/out, display rotation
- New models can be customized in 2week
- All items meet ROHS standards
- Operable in various light conditions, indoor and outdoor
Product Process
- The working principle of the capacitive screen
- Small amount of voltage is applied to the electrodes on the four corners . A human body is an electric conductor, so when you touch the screen with a finger, a slight amount of current is drawn, creating a voltage drop.
- The current respectively drifts to the electrodes on the four corners. Theoretically, the amount of current that
drifts through the four electrodes should be proportional to the distance from the touch point to the four corners.
The controller precisely calculates the proportion of the current passed through the four electrodes and figures
out the X/Y coordinate of a touch point.
GENERAL SPECIFICATIONS:
- Input Method: Finger or Cap. Stylus
- Accuracy: Within 2.5mm each target & 10% Jitter limit on moving
- Resolution: 25ppi (Min.)
- Transparency: 85 ± 5%
- Haze: 3% (Maximum)
- Note1:The optical characteristics listed as above are measured by BYK-Gardner instrument at 550nm wavelength.
FEATURES:
- Panel Size: 5 inch to 32 inch
- Structures: Glass/Glass
- Total Thickness: 3.1 ± 0.15 mm (Cover_1.8 mm & Sensor_1.1 mm)
- Operation Conditions: -20°C~+70°C at Min 45% to Max 85% RH
- Storage Conditions:-30°C~+80°C at Min 45% to Max 85% RH
Note1:In order to make a touch panel operate normally, please make sure that the host device is grounded.
Note2:All environmental characteristics listed as above all should be less than1 atmosphere.
Note3:The touch panel must be assembled with LCD panel by VHB or other materials, the control board also be fixed on
LCM bezel or other mechanical parts of the system and then be grounded;
Note4:The touch panel may be damaged functionally or unstable if the panel does not be grounded through your system to
earth.