Method and apparatus for LED display optical blending
A method for assembling an LED display includes the steps of: preparing a prefabricated diffuser film containing a light diffusion agent; mounting a plurality of light emitting elements on a substrate, thereby forming a plurality of gaps among the plurality of light emitting elements; filling the plurality of gaps with a black resin to form a planar surface composed of top surfaces of the plurality of light emitting elements and top surfaces of the black resin in the plurality of gaps; applying a transparent resin layer over the planar surface; and affixing the prefabricated diffuser film on the transparent resin layer. The resulting LED display has a plurality of light emitting elements surrounded by a black resin to form a checkered surface, a transparent resin layer affixed to the checkered surface; and a diffuser film affixed to the transparent resin layer by an adhesive.
1 . An LED display panel, comprising:
a plurality of light emitting elements mounted on a substrate, wherein gaps among the plurality of light emitting elements are filled with a black resin, wherein a top surface of the black resin is no higher than a top surface of each light emitting element, forming a planar surface that comprises the top surface of each light emitting element and the top surface of the black resin;
a transparent resin layer affixed to and covering an entirety of the planar surface; and
a diffuser film affixed to and covering the transparent resin layer by an adhesive.
2 . The LED display panel of claim 1 , wherein the diffuser film is prefabricated and contains a light diffusion agent.
3 . The LED display panel of claim 2 , wherein the prefabricated diffuser film has a thickness of 10 μm to 300 μm.
4 . The LED display panel of claim 2 , wherein the prefabricated diffuser film contains 0.1-10 wt % of the light diffusion agent.
5 . The LED display panel of claim 1 , wherein each of the plurality of light emitting elements is an LED chip.
6 . The LED display panel of claim 2 , wherein the prefabricated diffuser film has a surface that is roughened to reduce glossiness.
7 . The LED display panel of claim 2 , wherein each of the plurality of light emitting elements is a surface mount LED package.