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Standard 4-, 5-, 8-Wire

Standard Resistive Touchscreens

With over 18 years of experienced in the research and development of 4-, 5- and 8-wire resistive touch screens, AMT provides customers with the best selection of products anywhere, anytime. AMT’s touch screens range from 3.0” to 24” and each panel is manufactured in accordance with LCD sizes commonly available on the market. AMT products uniformly exhibit the following features:

  • Top-notch quality.
  • Highest reliability and strict quality control
  • Products of various thicknesses
  • Powerful research and design
  • Impeccable pre-sale service and quick after-sale service
  • A full range of touch screen sizes ranging from 3” to 24”
  • 4-, 5-, 8-wire product lines
  • Flexible order quantity

A complete set of hardware, software, touch controllers, and drivers are available for operating systems from the earliest DOS to the latest Windows 10 as well as Linux, Android, and QNX. Customers enjoy AMT’s long-term support and services and customization requests are always welcome. For more information, please contact us.

4-, 5-, and 8-Wire Technology

Resistive analog touch screens are normally available with 4-, 5-, and 8-wire circuitry.

4-Wire Touch Screen

4-wire touch screens are suitable for small or medium sized products such as PDAs and hand-held systems. These panels utilize X+, X-, Y+ and Y- lead outs at the four edges of the screen. When contact is made, X/Y read-outs are then read by the controller and converted into the correct coordinates.

5-Wire Touch Screen

5-wire touch screens can be produced in screen sizes from 3” to 24”. Resistive touch screens are suitable in many different systems and different environment.

In a 5-wire touch screen, the top layer is a sensor layer while the main circuitry is located in the layer underneath.

8-Wire Touch Screen

The 8-wire circuit structure is well suited for screens from 6” to 22”. Functionality is much like that of 4-wire circuitry; with the major difference being that an 8-wire structure offers 4 additional screen read-outs and circuit protection. These additional read-outs can be used to further adjust for possible distortion on the corners or edges of a larger screen.


Specifications

Optical
  • Surface finish: Antiglare or Clear
  • Light transmission: > 80%
  • Haze: 1.5~20% (depends on design)
Mechanical
  • Sizes: 3″ to 24″ diagonal size
  • Construction: Film-on-glass, Film-Film-PC or others
  • ITO glass thickness0.7mm, 1.1mm, 1.8mm, 2.8mm
  • Tail design: FPC type, Integral tail or others
  • Tail terminator: ZIF, Berg, AMP, AMP compatible or others
  • Input method: finger, gloved finger, stylus
  • Activation force: 0.1N to 1.0N depending on design
  • Surface hardness: 3H or higher
Environmental
  • Operating temperature: -20℃ to 70℃
  • Storage temperature: -40℃ to 80℃
  • Operating humidity:
    • if temp. ≧ 40°C, humidity less than 80% RH
    • if temp. < 40°C, humidity less than 90% RH
    • No dew condensation
  • Storage humidity: ambient humidity
Electrical
  • Insulation resistance: 10M ohm@25V DC
  • Linearity:
    • < 1.5% for 4-, 8-wire touch
    • < 1.0% for 5-wire touch inner area
    • < 1.5% for 5-wire touch perimeter area
  • Contact bounce: < 15ms
  • Operating voltage: 5.5 V
  • Contact current: 70mA (maximum)

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