Display device and manufacturing method of the same

Patent metadata

Field	Value
Publication number	US-2024224454-A1
Application number	US-202318459557-A
Country	US
Kind code	A1
Filing date	Sep 1, 2023
Priority date	Jan 2, 2023
Publication date	Jul 4, 2024
Grant date	—

Abstract

A display device includes a window module disposed on a display module. The display module has a peripheral region disposed on at least one side of an active region. The window module includes a pattern layer disposed adjacent to a window and overlapping the active region and the peripheral region. The pattern layer includes a transparent portion and a discoloration portion having a light transmittance lower than that of the transparent portion. Each of the transparent portion and the discoloration portion includes a discoloration inducer activated by a laser, so that the display device exhibits good display quality and excellent reliability properties.

First claim

What is claimed is:

1 . A display device comprising:
a display module including an active region, and a peripheral region disposed on at least one side of the active region; and a window module disposed on the display module, wherein the window module includes: a window; and a pattern layer adjacent to the window and overlapping the active region and the peripheral region, the pattern layer including a transparent portion and a discoloration portion, the discoloration portion having a light transmittance lower than a light transmittance of the transparent portion, wherein the transparent portion and the discoloration portion include a discoloration inducer activated by a laser.

2 . The display device of claim 1 , wherein the discoloration inducer comprises at least one of an organic pigment, an inorganic pigment, or a metal oxide.

3 . The display device of claim 1 , wherein the pattern layer comprises 0.05 wt % to 5 wt % of the discoloration inducer based on a total weight of the pattern layer.

4 . The display device of claim 1 , wherein:
the transparent portion comprises a base resin; and the discoloration portion comprises a discoloration resin modified from the base resin.

5 . The display device of claim 1 , wherein the pattern layer is a single adhesive layer disposed between the display module and the window.

6 . The display device of claim 1 , wherein the pattern layer comprises:
a sub-pattern layer including the transparent portion and the discoloration portion; and a transparent adhesive layer disposed on at least one of an upper surface or a lower surface of the sub-pattern layer, and excluding the discoloration inducer.

7 . The display device of claim 6 , wherein the sub-pattern layer is a single adhesive layer.

8 . The display device of claim 1 , wherein:
an optical density of the discoloration portion is 1 to 3, and an optical density of the transparent portion is less than 1.

9 . The display device of claim 1 , wherein:
the pattern layer is disposed in an upper portion of the window; and the window module further comprises a window adhesive layer disposed between the display module and the window.

10 . The display device of claim 9 , wherein the pattern layer comprises:
a sub-pattern layer including the transparent portion and the discoloration portion; and a base film layer disposed on an upper surface of the sub-pattern layer, and excluding the discoloration inducer.

11 . The display device of claim 9 , wherein the pattern layer comprises:
a sub-pattern layer including the transparent portion and the discoloration portion; and a protection layer adhesive layer disposed between the sub-pattern layer and the window, and excluding the discoloration inducer.

12 . The display device of claim 1 , wherein the window module comprises:
a light blocking pattern disposed on an upper surface or a lower surface of the window, and overlapping the discoloration portion.

13 . A display device comprising:
an electronic module; a display module disposed on the electronic module and including an active region, an electronic module region overlapping the electronic module and included in the active region, and a peripheral region disposed on at least one side of the active region; and a window module disposed on the display module and including a window and a pattern layer adjacent to the window, the pattern layer including a discoloration inducer activated by a laser, wherein the pattern layer includes: a transparent portion corresponding to the active region; and a discoloration portion corresponding to the peripheral region and having a higher optical density than the transparent portion.

14 . The display device of claim 13 , wherein the pattern layer overlaps the electronic module region, includes the discoloration inducer, and further includes a sub-discoloration portion having a higher optical density than the transparent portion.

15 . The display device of claim 13 , wherein the discoloration inducer comprises at least one of an organic pigment, an inorganic pigment, or a metal oxide.

16 . A method for manufacturing a display device, the method comprising:
providing a display module; providing a preliminary pattern layer including a discoloration inducer on the display module; providing a window on the preliminary pattern layer; and irradiating a laser onto the preliminary pattern layer to form a pattern layer including a discoloration portion and a transparent portion, the discoloration portion having an increased optical density by the discoloration inducer and the transparent portion having an optical density lower than the discoloration portion.

17 . The method of claim 16 , further comprising:
before the forming of the pattern layer, performing ultraviolet-curing on the preliminary pattern layer.

18 . The method of claim 16 , wherein the display module comprises:
an active region; and a peripheral region disposed on at least one side of the active region, wherein in forming the pattern layer, the laser is irradiated onto the peripheral region.

19 . The method of claim 16 , wherein:
the preliminary pattern layer comprises a base resin and the discoloration inducer dispersed in the base resin; and forming the pattern layer comprises changing light transmittance of the base resin by the discoloration inducer activated by the laser, thereby forming the discoloration portion.

20 . The method of claim 16 , wherein the laser is an Nd:YAG laser.

Assignees

• Samsung Display Co Ltd

Inventors

• Kim Won-Seok
• Park Jongdeok
• Son Intae
• Yoo Jaesuk
• Lee Kang-Woo
• Lee Dasong

Classifications

• H10K59/8792

  comprising light absorbing layers, e.g. black layers · CPC title

• H10K59/8722

  Peripheral sealing arrangements, e.g. adhesives, sealants · CPC title

• H10K59/872 Primary

  Containers · CPC title

• H04M1/0266 Primary

  for a display module assembly · CPC title

• C09K9/00

  Tenebrescent materials, i.e. materials for which the range of wavelengths for energy absorption is changed as a result of excitation by some form of energy · CPC title