Display device and assembling method thereof

Patent metadata

Field	Value
Publication number	US-10943550-B2
Application number	US-201916400494-A
Country	US
Kind code	B2
Filing date	May 1, 2019
Priority date	May 9, 2018
Publication date	Mar 9, 2021
Grant date	Mar 9, 2021

Abstract

A display device includes a backlight module, and the backlight module includes a light-guiding plate, a light-emitting assembly, and an adhesive member. The light-emitting assembly is disposed correspondingly to the light-guiding plate and includes a substrate and a plurality of light-emitting elements. The substrate includes a first surface, and the first surface includes a component arrangement region and a planar region. A first gap is formed between the planar region and the component arrangement region, and the planar region and the component arrangement region are electrically isolated from each other. The light-emitting elements are disposed on the component arrangement region. The adhesive member connects the light-guiding plate and the planar region. An assembling method of the display device is also provided. This disclosure can improve the non-uniform brightness issue (hotspots) or enhance the optical performance.

First claim

What is claimed is:

1. A display device comprising a backlight module, the backlight module comprising:
a light-guiding plate;
a light-emitting assembly disposed correspondingly to the light-guiding plate, wherein the light-emitting assembly comprises:
a substrate comprising a base material, a protection layer and a filled layer on a first surface of the substrate, wherein the first surface comprises a component arrangement region and a planar region, a first gap is formed between the planar region and the component arrangement region, and the planar region and the component arrangement region are electrically isolated from each other, wherein the protection layer is disposed on the filled layer, wherein the filled layer is disposed on the base material and located at the planar region, and a thickness of the protection layer is greater than 0 μm and less than 30 μm; and
a plurality of light-emitting elements disposed on the component arrangement region; and

an adhesive member connecting the light-guiding plate and the planar region.

2. The display device according to claim 1 , wherein the first gap has an extension direction, and the light-emitting elements are arranged along the extension direction.

3. The display device according to claim 1 , wherein the first gap has an extension direction, the planar region has a first width along a direction perpendicular to the extension direction, the substrate has a second width along the direction perpendicular to the extension direction, and a ratio of the first width to the second width ranges from 0.20 to 0.85.

4. The display device according to claim 1 , wherein an Young's modulus of the filled layer ranges from 6×10 10 Pa to 15×10 10 Pa.

5. The display device according to claim 1 , wherein the substrate further comprises an electrical conductive layer, and the filled layer and the electrical conductive layer are disposed on two opposite surfaces of the base material.

6. The display device according to claim 1 , wherein the first gap is greater than 0 mm and less than 0.3 mm.

7. The display device according to claim 1 , wherein a part of the light-emitting elements disposed adjacent to each other are connected in series.

8. The display device according to claim 1 , wherein a part of the light-emitting elements disposed adjacent to each other are connected in parallel.

9. The display device according to claim 1 , wherein at least a through hole is formed in the component arrangement region.

10. An assembling method of a display device, comprising:
providing a light-guiding plate;
providing a light-emitting assembly disposed correspondingly to the light-guiding plate, wherein the light-emitting assembly comprises a substrate and a plurality of light-emitting elements, wherein the substrate comprises a first surface, wherein the first surface comprises a component arrangement region and a planar region, wherein a first gap is formed between the planar region and the component arrangement region, and wherein the planar region and the component arrangement region are electrically isolated from each other, and the light-emitting elements are disposed on the component arrangement region;
disposing an adhesive member on the planar region or the light-guiding plate; and
connecting the light-guiding plate and the planar region of the substrate by the adhesive member,
wherein the substrate further comprises a base material, a protection layer and a filled layer on the first surface, and the protection layer is disposed on the filled layer, wherein the filled layer is disposed on the base material and located at the planar region, and a thickness of the protection layer is greater than 0 μm and less than 30 μm.

11. The assembling method according to claim 10 , further comprising:
disposing a frame at one side of the light-emitting assembly away from the light-guiding plate, and providing a reflective member between the frame, the light-emitting assembly and the light-guiding plate;
disposing at least an optical film on the light-guiding plate; and
disposed a display panel on a supporting portion of the frame.

12. The assembling method according to claim 10 , wherein the first gap has an extension direction, and the light-emitting elements are arranged along the extension direction.

13. The assembling method according to claim 10 , wherein the first gap has an extension direction, the planar region has a first width along a direction perpendicular to the extension direction, the substrate has a second width along the direction perpendicular to the extension direction, and a ratio of the first width to the second width ranges from 0.20 to 0.85.

14. The assembling method according to claim 10 , wherein an Young's modulus of the filled layer ranges from 6×10 10 Pa to 15×10 10 Pa.

15. The assembling method according to claim 10 , wherein the substrate further comprises an electrical conductive layer, and the filled layer and the electrical conductive layer are disposed on two opposite surfaces of the base material.

16. The assembling method according to claim 10 , wherein the first gap is greater than 0 mm and less than 0.3 mm.

17. The assembling method according to claim 10 , wherein a part of the light-emitting elements disposed adjacent to each other are connected in series.

18. The assembling method according to claim 10 , wherein a part of the light-emitting elements disposed adjacent to each other are connected in parallel.

Assignees

• Innolux Corp

Inventors

• Kuo Chung-Chun
• Chen chun-fang
• Su Hui-Wen
• Chen Wei-Yuan
• Cheng Chung-Yu

Classifications

• G02B6/0083 Primary

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

• G02B6/0068

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

• G09G3/3473 Primary

  based on light coupled out of a light guide, e.g. due to scattering, by contracting the light guide with external means · CPC title

• G02B6/4239

  Adhesive bonding; Encapsulation with polymer material · CPC title

• G02B6/0091

  of the light source relative to the light guide (G02B6/0021 takes precedence) · CPC title