Graphic Overlays with Display Windows

It is very common for our membrane switches to be applied above a display.  When this is the case, our graphic overlays can be designed and manufactured with a transparent or translucent window for viewing the display from the front of the panel. The window design is typically contingent on the type of display being used in order to maximize the visibility and readability of the display.

LCD displays require clear windows therefore typically utilize windows with minimal filters with a gloss finish. Anti-glare can also be used if required. LED segment displays require less clarity and typically utilize windows with optical filtering to maintain readability in brighter settings. VFDs usually accept a matte finish.

Graphic overlays with windows are typically manufactured using the following:

• • Gloss
  • Hard-coat
  • Scratch-resistant polyester
  • Polycarbonate

The first surface (or top surface) is typically selectively textured leaving the windows glossy while offering a secondary matte surface finish. 

Windows can also be smoked and printed color dyes can be added to produce red, green, yellow, etc. to produce filters or tints.

Additionally, the LCD windows can be manufactured with alternative gloss levels for anti-glare if the membrane switch is used outdoors in a bright environment.

Optically bonded windows can also be integrated into the window design which adds thickness and durability to the window to make up air gaps between the display and window to prevent window damage.