Light-emitting module structure

Patent metadata

Field	Value
Publication number	US-2019324184-A1
Application number	US-201916373651-A
Country	US
Kind code	A1
Filing date	Apr 3, 2019
Priority date	Apr 19, 2018
Publication date	Oct 24, 2019
Grant date	—

Abstract

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.

First claim

What is claimed is:

1 . A light-emitting module structure, comprising:
a substrate; a plurality of light-emitting diodes disposed on the substrate; and 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 on each of the light-emitting diodes.

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 , further comprising a plurality of scattering structures disposed on the substrate, 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 2 , 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 each of the light-emitting diodes.

7 . The light-emitting module structure of claim 1 , wherein each of the recesses has an opening and a bottom, wherein the opening has a width, the bottoms is aligned with one of the light-emitting diodes, a vertical distance is between the aligned bottom and the light-emitting diode, and a ratio of the width to the vertical distance is about 0.85 to 3.5.

8 . 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.

9 . The light-emitting module structure of claim 1 , wherein the recesses comprise cone recesses or cylindrical recesses.

10 . The light-emitting module structure of claim 1 , wherein the recesses comprise a plurality of first V-shaped trenches extending along a first direction.

11 . The light-emitting module structure of claim 10 , 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, and the first V-shaped trenches intersect with the second V-shaped trenches to form a plurality of intersections.

12 . The light-emitting module structure of claim 1 , further comprising a phosphor layer or a quantum dot layer on the upper surface of the light-guiding layer.

13 . The light-emitting module structure of claim 12 , further comprising a phosphor layer covering at least one of the light-emitting diodes.

14 . The light-emitting module structure of claim 1 , wherein the upper surface of the light-guiding layer is a reflection surface or a refraction surface.

15 . The light-emitting module structure of claim 1 , further comprising a concave structure disposed between the substrate and each of the light-emitting diodes.

16 . 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.

17 . The light-emitting module structure of claim 16 , wherein the transparent glue layer in the recesses has a protruding glue accumulation portion.

18 . 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.

19 . A light-emitting module structure, comprising:
a substrate; a plurality of light-emitting diodes disposed on the substrate; and 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.

20 . The light-emitting module structure of claim 19 , 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.

21 . The light-emitting module structure of claim 20 , further comprising a plurality of scattering structures disposed on the substrate, 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.

22 . The light-emitting module structure of claim 21 , 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.

23 . The light-emitting module structure of claim 20 , 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.

24 . The light-emitting module structure of claim 20 , 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.

25 . The light-emitting module structure of claim 19 , 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.

26 . The light-emitting module structure of claim 19 , wherein the recesses comprise a plurality of first V-shaped trenches extending along a first direction.

27 . The light-emitting module structure of claim 26 , 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.

28 . The light-emitting module structure of claim 19 , further comprising a transparent glue layer on the upper surface of the light-guiding layer, wherein the transparent glue layer fills the recesses.

29 . The light-emitting module structure of claim 28 , wherein the transparent glue layer in the recesses has

Assignees

• Lextar Electronics Corp

Inventors

• Cai Pei-Song
• Lai Lung-Kuan
• Yeh Shih-Yu
• Chen Guan-Zhi
• Liu hong-zhi
• Chang Kuo-Yen
• Li Ching-Hua

Classifications

• H10W90/00 Primary

  Package configurations · CPC title

• G02B6/0083

  Details of electrical connections of light sources to drivers, circuit boards, or the like · CPC title

• G02B6/0038 Primary

  Linear indentations or grooves, e.g. arc-shaped grooves or meandering grooves, extending over the full length or width of the light guide · CPC title

• G02B6/0021 Primary

  for housing at least a part of the light source, e.g. by forming holes or recesses · CPC title

• G02B6/0068

  Arrangements of plural sources, e.g. multi-colour light sources · CPC title