4 wire resistive touch screen 19inch lcd resistive touch screen for
POS Monitor
How does a resistive touch screen work?
In simple terms, a Resistive Touch Screen is a touch-sensitive
computer display that responds by applying pressure.When contact is
made to the surface of the touchscreen, these two sheets are
pressed together. Each sheet has horizontal and vertical lines that
register the precise location of the touch.
The sensing process is as below.
The sensing process Voltage is imposed between the electrode X1 and
X2 on the top sheet. Then, there will be formed on the top sheet an
equipotential distribution that is parallel to the X1 and X2.
Assuming that the electrode X1 is 0V (Ground), then impose 5V to
the electrode X2. If the central point between the right and left
electrodes is touched, 2.5V would be measured by the bottom sheet.
If a point 1/5 away from X1 (4/5 away from X2) is touched, 1V would
be measured by the bottom sheet. The X coordinate point is detected
in this way.
After detecting the coordinate point in X direction, Voltage is
imposed between the electrode Y1 and Y2 on the bottom sheet. The
point between Y1 and Y2 (Y coordinate) would be measured by the top
sheet, just in the same manner as X coordinate in the step 1-2.
As the set of step 1, 3 is repeated, the X and Y coordinate points
of touched locations keeps being detected.
Is there structural difference between 4-wire and 5-wire
technologies?
Just same as analog 4-wire resistive technology, an analog 5-wire
resistive sensor consists of top and bottom sheets which are facing
each other with a gap in between. Unlike analog 4-wire resistive
technology, electrodes are placed on four corners of the bottom
sheet in analog 5-wire technology. The sensing process is as below
Main Feature
- High accurate
- Pressure sensitive
- Can responds to any input device
- Short response time
- Compact size for easy integration
- Customization available
Specification of Product
| 4 Wires Resistive Touch Panel Specification |
| General Size | 5.7 inch To 22 inch |
| Fit in with | Panel display device |
| Mechanical |
| Input Method | Finger or gloved hand (rubber ,cloth or leather) |
| Active Force | Stylus or Finger or Similar <45g~110g |
| Ball Impact | ø13.0. Steel Ball/9g, Height=30cm, 1 time, no damage [Impact at
center area] |
| Durability | >35 million touches |
| Positional Accuracy | <1.5% |
| Optical |
| Light Transmission | 82% |
| Clear surface | <3% |
| Anti-glare Surface | <4% |
| Anti-Newton | <10% |
| Gloss | 90±20 gloss units tested on a hard-coated front surface Accordance
with ASTM D 2457 |
| Electrical |
| Supply voltage | DC5V |
| Circuit Resistance | X:20~25Ω0, Y:20~250Ω |
| Linearity | X<1.5%, Y<1.5% |
| Response | <15ms |
| Insulation | >20MΩ/25V(DC) |
| Endurance | No acting damage at DC50V/60sec. |
| Resolution | Based on controller resolution of 4096 x 4096 |
| Environmental |
| Operation Temperature | -10°C ~ +60°C |
| Operation Humidity | 20%RH ~ 85%RH, no condensing |
| Storage Temperature | -40°C ~ +80°C |
| Storage Humidity | 10%RH ~ 90%RH, no condensing |
| Waterproof | Not damaged by running water applied to the active area |
| Reliability |
| Heat Cycle | 70°C /240 hrs |
| Cold Cycle | -40°C /240 hrs |
| Thermal Cycle | -40°C ~7°0C [60 min./cycle] *10 cycles |
| Operationg System |
| Operation System | Linux/ Dos / Windows ME/95/98 / NT4.0/XP/2000/ 7 /Mac OS |
| Warranty |
| Touch screen 1 years |
| Touch Controller 1 years |
Picture of Product
Technical Drawing
