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3M Touch Systems

3M™ MicroTouch™ System SCT3240CX

The Clear Solution for Small Touch Applications (5.7" to 15" display sizes)


MicroTouch™ System SCT3240CX

Developed specifically to meet the optical and durability needs of small display applications, the price competitive 3M MicroTouch System SCT3240CX provides superior surface durability and typically 9% higher optical transmission than certain 5-wire resistive solutions for device manufacturers requiring more reliable and brighter touch displays.

Based on the 3M™ MicroTouch™ Electronics CX, the system's HID-USB controller offers a reduced component count and slim 0.8" x 1.9" board, making it up to 54% smaller and requiring up to 25% less power compared to certain 5-wire resistive solutions.

All-Glass Solution with 3M ClearTek Hard Coat

  • Up to 8% better light transmission than typical resistive solutions offers superior display performance
  • Superior surface durability is designed to maintain optical and functional performance over the life of the product
  • All-glass sensor is unaffected by spacer dots or damaged films to provide increased reliability and accuracy

3M MicroTouch Electronics CX

  • Small form factor for compact devices with limited space
  • Single IC solution minimizes component count and achieves higher MTBF
  • Up to 25% less power consumption for power-constrained applications

Scratch-resistant Hard Coat

  • Hardness MoHS 5 or less does not induce a scratch which will cause a functional failure
  • Exceeds 9H (highest rating) on Pencil Hardness test versus 3H typical resistive touchscreen rating
  • Smooth surface allows for improved scroll performance
  • Durable finish provides excellent chemical resistance and an easy-to-clean surface

System Performance

  • Light Transmission: 88% (minimum)
  • Input Method: Finger input
  • Accuracy: >98.5% of true position
  • Resolution: 2048 x 2048
  • Linearization: Factory linearized
  • Tail Connection: Solder-less design

Electronics (3M MicroTouch Controller CX)

  • Communication: USB HID (Mouse)
  • Dimensions: 0.80" (20.32 mm) x 1.90" (48.26 mm) REF
  • Operating Current: 25 mA (typical)
  • Sleep Current: < 500 uA
  • Power Connection: USB BUS (5V)
  • Connectors: 5-pin AMP (Touchscreen side)
               5-pin Molex (USB COM side)
  • ESD: ±8KV Contact, ±20KV Air
  • Point Speed (PPS): 100 pps
  • Minimum Touch Time: <22 ms

Reliability

  • Surface Obstructions: Withstands most surface contaminants
  • Chemical Resistance: ASTM-D-1308-02 and ASTM-F-1598-95
  • Liquid Resistance: Liquids on screen do not impede touch performance
  • Operating Temperature: -10° C to 65° C
  • Storage Temperature: -50° C and 85° C
  • Humidity: Up to 90% RH from 0° C to +35° C, non-condensing
  • MTBF: >500,000 hours

Mechanical

  • Glass Thickness: 0.125" (3.18 mm)
  • Display Size Supported: 5.7" (144.78 mm) to 15" (381 mm)
                       (standard and wide formats)
  • Surface Scratch Hardness: Hardness MoHS 5 or less does not induce a scratch which will cause a functional failure, exceeds
                       9H Pencil Hardness test
  • Scratch Resistance: Proprietary hard coat
  • Sealing/Gasketing: NEMA 4 / IP66. Complete water-resistant seal compatible.
  • Cleaning: Water, isopropyl alcohol, or similar non-abrasive cleaners
  • RoHS Directive compliant: Yes

System Warranty

  • 2 years

MT7 Gestures

MT7 Gestures allow customers to use prebuilt software libraries to add intuitive gesture recognition to their touch applications. This application program interface (API) incorporates "single finger gesture recognition", as well as a programmable "radial menu" feature that allow developers to enhance their user interface with intuitive touch features. These four libraries are included in the MT7 Gestures API:

  • MT7 Trace collects user touch actions into traces, each representing a single touch down, drag, and lift off sequence.
  • MT7 Stroke takes a trace and matches it against an applicationdefined collection of reference strokes. Based on the match, the application determines what action is intended.
  • MT7 Radial presents a radial menu (a.k.a. pie menu) for the user to select an option that the application responds to.
  • MT7 Box Tool takes one or two traces and monitors their position, returning any change in distance or angle between a trace and a reference point or another trace.

Click here for information on the 3M MicroTouch Software MT7 features, drivers and control panel.

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