According to 3M, its Uniformity Tape reduces the number of LEDs required for edge-lit LED LCD panels without sacrificing brightness or efficiency. Adhering to the edge of the light guide, which faces the LED light sources, it is a clear tape with adhesive on one side and a micro-replicated optical pattern on the other. The tape increases light spreading in the light guide from each LED, increasing the allowable LED spacing. The optical pattern is spatially uniform, so no positional registration of LEDs is required along its length. The tape keeps the edge of the display closest to the LEDs uniform in brightness when the spacing of light sources is increased. Uniformity Tape can also increase LED spacing up to three times the current spacing while maintaining edge uniformity for a given bezel size.

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3M
www.3m.com