IP Library › Granted Patent US 12,431,475
Granted Patent B2
US 12,431,475 · App. 17/838,507 · Granted Sep 30, 2025

Method of repairing a display panel and repaired display panel

Inventors: Woo Gun Lee (Gyeonggi-do, KR); Young Il Go (Gyeonggi-do, KR); Youngsik Ki (Gyeonggi-do, KR); Seung Sik Hong (Gyeonggi-do, KR)
Assignee: Seoul Semiconductor Co., Ltd.
H01L25/13H01L25/167H10H20/853H01L24/05H01L24/27H01L24/29H01L24/32H01L24/83H01L24/98H01L2224/05567H01L2224/05573H01L2224/27602H01L2224/29006H01L2224/2929H01L2224/29309H01L2224/29311H01L2224/29316H01L2224/29318H01L2224/29324H01L2224/29347H01L2224/32145H01L2224/32227H01L2224/83224H01L2224/83801H01L2224/98H01L2924/0132H01L2924/12041H10H20/034H10H20/0362
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Quick Facts
Patent No.
US 12,431,475
App. No.
17/838,507
Granted
Sep 30, 2025
Kind
B2
Abstract

A method of repairing a display panel and a repaired display panel are provided. The display panel includes a panel substrate, a plurality of micro LEDs arranged on the panel substrate, and a molding member covering the plurality of micro LEDs. The molding member includes a first molding member and a second molding member disposed in a region surrounded by the first molding member. The second molding member has a composition or a shape different from that of the first molding member, and the second molding member surrounds at least one side surface of the plurality of micro LEDs.

Claims (46)

1. A display panel, comprising:

a panel substrate;

a plurality of micro LEDs arranged on the panel substrate;

a plurality of conductive bonding layers disposed on the panel substrate, wherein each of the plurality of conductive bonding layers is electrically connected to at least one of the plurality of micro LEDs; and

a molding layer configured to cover the plurality of micro LEDs, wherein:

the molding layer includes a first molding layer and a second molding layer disposed in a region surrounded by the first molding layer,

the second molding layer has a composition or a shape different from that of the first molding layer,

the second molding layer surrounds at least one surface of at least one of the plurality of micro LEDs, and

at least one of the plurality of conductive bonding layers is thicker than another one of the plurality of conductive bonding layers.

2. The display panel of claim 1 , wherein a light transmittance of the second molding layer is higher than a light transmittance of the first molding layer.

3. The display panel of claim 1 , wherein a height of an upper surface of the second molding layer is lower than a height of an upper surface of the first molding layer.

4. The display panel of claim 3 , further comprising:

a film covering the second molding layer, wherein:

the film is disposed in the region surrounded by the first molding layer, and a height of an upper surface of the film is substantially equal to the height of the upper surface of the first molding layer.

5. The display panel of claim 4 , wherein the first molding layer and the film include at least one anti-glare layer on upper surfaces thereof.

6. The display panel of claim 5 , wherein an anti-glare layer disposed on the upper surface of the first molding layer is spaced apart from an anti-glare layer disposed on the upper surface of the film.

7. The display panel of claim 1 , comprising:

a plurality of pixels, wherein:

the plurality of pixels has a structure in which the micro LEDs are modularized, respectively, and the second molding layer covers at least one side surface of the at least one of the plurality of pixels.

8. The display panel of claim 7 , wherein:

the plurality of pixels includes a replacement pixel, and the second molding layer covers side surfaces of the replacement pixel.

9. The display panel of claim 8 , further comprising:

a film covering the second molding layer, wherein:

the film is disposed in the region surrounded by the first molding layer, and a height of an upper surface of the film is substantially equal to a height of the upper surface of the first molding layer.

10. The display panel of claim 8 ,

wherein a conductive bonding layer for the replacement pixel is thicker than a conductive bonding layer for other pixels.

11. The display panel of claim 8 , wherein an upper surface of the replacement pixel is higher than upper surfaces of other pixels.

12. A display panel, comprising:

a panel substrate;

a plurality of LED pixels arranged on the panel substrate;

a plurality of conductive bonding layers disposed on the panel substrate, wherein each of the plurality of conductive bonding layers is electrically connected to at least one of the plurality of LED pixels; and

a molding layer covering the plurality of LED pixels, wherein:

the molding layer includes a plurality of layers in at least one LED pixel region of the plurality of LED pixels,

the plurality of layers of the molding layer includes a first layer and a second layer disposed over the first layer,

a composition or a shape of a partial region of the second layer is different from a composition or a shape of the first layer, and

at least one of the plurality of conductive bonding layers is thicker than another one of the plurality of conductive bonding layers.

13. The display panel of claim 12 , wherein:

each of the plurality of LED pixels includes a plurality of micro LEDs, and the first layer is in contact with at least one side of at least one of the plurality of micro LEDs.

14. The display panel of claim 12 , wherein a region over the second layer includes a haze treatment region.

15. The display panel of claim 12 , wherein:

the second layer includes an upper layer and a lower layer, and the lower layer includes an identical material as that of the first layer.

16. The display panel of claim 15 , wherein the upper layer includes a haze treatment region.

17. The display panel of claim 15 , wherein the upper layer includes an anti-glare film.

18. The display panel of claim 15 , wherein the upper layer and the lower layer have different thicknesses.

19. The display panel of claim 14 , wherein a haze value of the haze treatment region is smaller than or equal to 30%.

20. The display panel of claim 15 , wherein the lower layer has an identical light transmittance or light shielding rate as that of the first layer.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 22, 2022
From: LEE, WOO GUN; GO, YOUNG IL; KI, YOUNGSIK; HONG, SEUNG SIK
To: SEOUL SEMICONDUCTOR CO., LTD.
Reel/Frame 062191/0922 →
Continuity (3)
Provisional Application 63349704 · Jun 7, 2022
Provisional Application 63210307 · Jun 14, 2021
Related Publication 20220399317A1 · Dec 15, 2022
References Cited (13)
US 9111464B2 · Bibl et al. · 2015 [cited by applicant]
US 9484504B2 · Bibl et al. · 2016 [cited by applicant]
US 20180076368A1 · Hussell · 2018 [cited by examiner]
US 20190244938A1 · Bang · 2019 [cited by examiner]
US 20200058834A1 · Park · 2020 [cited by examiner]
US 20200161514A1 · Hwang et al. · 2020 [cited by applicant]
US 20210013259A1 · Ahn et al. · 2021 [cited by applicant]
US 20220223754A1 · Ahn et al. · 2022 [cited by applicant]
KR 1020190108768A · 2019 [cited by applicant]
KR 1020200135069A · 2020 [cited by applicant]
KR 1020210006241A · 2021 [cited by applicant]
International Search Report for PCT/KR2022/008404, Oct. 7, 2022, 4 pages. [cited by applicant]
Extended European search report for European Patent Application No. 22825280.5, Apr. 25, 2025, 10 pages. [cited by applicant]