Light-emitting module structure
A light-emitting module structure includes a substrate, a plurality of light-emitting diodes (LEDs) disposed on the substrate, and a light-guiding layer covering the light-emitting diodes. The light-guiding layer has an upper surface, the upper surface has a plurality of recesses, and the recesses are above the light-emitting diodes or between the light-emitting diodes. This light-emitting module structure can improve the brightness and uniformity of the light-emitting module.
1. A light-emitting module structure, comprising:
a substrate, wherein the substrate is an opaque substrate;
a plurality of light-emitting diodes disposed on the substrate;
a light-guiding layer covering the light-emitting diodes, wherein the light-guiding layer has an upper surface, the upper surface has a plurality of recesses, and each of the recesses is between the light-emitting diodes; and
a plurality of scattering structures disposed on the substrate, wherein the plurality of scattering structures are covered by the light-guiding layer, and an upper surface of the plurality of scattering structures is lower than the plurality of recesses.
2. The light-emitting module structure of claim 1 , further comprising a plurality of crosstalk resistant structures disposed on the substrate, wherein each of the crosstalk resistant structures is between the light-emitting diodes.
3. The light-emitting module structure of claim 2 , wherein each of the scattering structures is arranged between two adjacent ones of the light-emitting diodes and disposed on two opposite sides of each of the crosstalk resistant structures.
4. The light-emitting module structure of claim 3 , further comprising a plurality of reflection structures disposed on the substrate, wherein each of the reflection structures is arranged between two adjacent ones of the light-emitting diodes and disposed on two opposite sides of each of the crosstalk resistant structures.
5. The light-emitting module structure of claim 2 , wherein the light-emitting diodes are arranged as a regular hexagon, and each of the crosstalk resistant structures is positioned at a center of the regular hexagon.
6. The light-emitting module structure of claim 2 , wherein the crosstalk resistant structures comprise a plurality of cones or a plurality of cylinders, and each of the crosstalk resistant structures has a height that is greater than or equal to a height of the light-emitting diodes.
7. The light-emitting module structure of claim 1 , further comprising at least one reflection structure disposed on a part of the upper surface of the light-guiding layer, wherein the reflection structure has a reflection surface immediately neighboring the upper surface, and the reflection surface is a scattering reflection surface or a mirror reflection surface.
8. The light-emitting module structure of claim 1 , wherein the recesses comprise a plurality of first V-shaped trenches extending along a first direction.
9. The light-emitting module structure of claim 8 , wherein the recesses further comprise a plurality of second V-shaped trenches extending along a second direction, the second direction is different from the first direction, the first V-shaped trenches intersect with the second V-shaped trenches to form a plurality of intersections.
10. The light-emitting module structure of claim 1 , further comprising a transparent glue layer on the upper surface of the light-guiding layer, wherein the transparent glue layer fills the recesses.
11. The light-emitting module structure of claim 10 , wherein the transparent glue layer in the recesses has a protruding glue accumulation portion.
12. The light-emitting module structure of claim 1 , wherein the substrate has at least one cavity, and at least one of the light-emitting diodes is correspondingly disposed in the at least one cavity, wherein the light-emitting diodes are chip size package light-emitting diodes.