Selectronic News

Customised TFT displays deliver clarity from Selectronic


On time and on budget solutions with worldwide service.


Let’s be clear: when it comes to delivering clarity then Selectronic’s range of Thin Film Transistor displays is ahead of the rest.

They supply a complete range of screens ideal for instrumentation type applications as well as industrial grade and automotive TFT displays. These include full or semi custom displays with optimised characteristics to supply truly enhanced displays for your customers.

Selectronic, the Witney, Oxfordshire, based company celebrating its 40th year, says there are affordable customised TFT displays for all. Pictured is a 12.1inch TFT display of 1024×768 resolution (a standard size), with a custom enhanced backlight and a bespoke pcap touch screen with radiused corners. The extended front glass has reverse printed black border in order to provide a bezel-less fit into the customer’s housing.

The TFT and pcap are optically bonded together for optimum daylight legibility and enhanced ruggedness. “We also produced the black TFT data and backlight power cables to mate to the customer’s chosen computer board seen in the foreground,” said Selectronic Managing Director Kevin Dry (the yellow & black cable is an industry standard, 12VDC power input cable.)

Dry continued: “Custom-made TFTs seem to be everywhere these days, in cars, hand held “tech” devices and gadgets around the home. This is great for products made in very high volume because the cost of tooling TFT glass is into the hundreds of thousands of pounds.

“Manufacturers of equipment sold in more modest volumes have more options than ever, especially since Selectronic has access to the widest selection of TFT ‘glassware’, to enable it to produce customised modules for volumes as low as 1000 pieces.”

He explained that customising means TFT display solutions can be tailored to mechanically better fit your casing allowing you more freedom in the design. Touch screens or keypad buttons can be integrated to ensure easy assembly, a close-fit and the closest proximity in the case of buttons.

“For the electronics designer, FPC tails can be customised in length and pin-out to best-fit your circuit lay-out,” added Dry. “Often components can be added to the FPC to minimise connections to the driving circuit and power supply. Touch screen interfaces can be customised to mate the desired port and routed separately or integrated into the display interface as desired.”

For the TFT display itself, the LED backlight parameters can often be changed – brighter LEDs for an outdoor application or lower powered ones for battery powered equipment. Touch screens are very popular these days with resistive or projected capacitive (PCAP) being the most common offerings.

The front-glass of the PCAP touch screen can easily be tailored to become a feature of the front panel aesthetics, with reverse printing, rounded corners and a choice of thickness and glass material-type available. Resistive touch screens can be customised with reverse printed graphical overlays, tails can be extended and different thicknesses of glass chosen.

PCB assemblies with keypad buttons and indicator LEDs can be added, as well as silicone rubber keymats to fit around the display to complete the front-panel assembly.

Kevin Dry added: “TFT display customisation really can be a cost effective way to simplify equipment front-panel assembly, improve aesthetics or just cost optimise your next design.”

Selectronic is a leading UK company for front-panel component and solution supply to UK designers and manufacturers and can deliver innovative custom solutions on-time and on-budget to its customers world-wide. Contact Selectronic today on 01993 778000 or click to start a conversation with one of Selectronic’s experts.