Diagnostic Medical Equipment Display Solution

Request

We received an enquiry for a 12.1” touch panel TFT display to be driven directly from an HDMI input for a piece of diagnostic medical equipment.  Due to the nature of the application, the display and touch panel had to have a very high reliability, and the touch screen had to have a high immunity against unwanted touches. 

• 

  12.1″ HDMI TFT LCD Display

  Screen size: 12.1″ 
  Aspect Ratio: 4:3
  Active area: 245.76(W) x 184.32(H) mm
  Resolution: 1024 x 768 
  Interface: HDMI
  Brightness: 850cd/m2 – 1600cd/m2
  Touch Panel Options: PCAP & Resistive
  Operating Temperature -30°C to +80°C

  Click here for more info

Refine

Detailed discussions with the customer highlighted their key considerations of, simple integration within their equipment, high-performance specifications and also the aesthetics of the display from a user perspective.  Our starting point was a 12.1” IPS display with PCAP touch panel and a direct HDMI input.  The final design included the following changes to achieve the customer’s overall objectives: 

• an upgraded rugged PCAP touchscreen, with high EMC immunity and excellent MTBF.
• a custom cover lens designed in accordance with the customer’s aesthetics and integration requirements.  This included: 
  • custom footprint
  • printed graphics
  • anti-fingerprint surface treatment
  • anti-glare etched onto the glass
• HDMI driver board mounted directly on the display. 

• 

  12.1 PCAP Rugged Series Touch Panel

  Construction: Glass/Film/Film (GFF)
  Number of fingers: 10
  Cover lens: up to 10mm
  Signal to Noise ratio: 32V
  Full water & Glove Touch

  Click here for more info

Result

Customer involvement throughout the process is crucial to the way we work at Relec.  Specifications, drawings and prototypes are made available in accordance with strictly managed deadlines. The customer now has a product that perfectly meets their application, environment and most importantly, their budget.