Display device and manufacturing method thereof

Patent metadata

Field	Value
Publication number	US-2020328377-A1
Application number	US-202016826138-A
Country	US
Kind code	A1
Filing date	Mar 20, 2020
Priority date	Apr 11, 2019
Publication date	Oct 15, 2020
Grant date	—

Abstract

A method of manufacturing a display device includes forming a display unit including a main display area and a sensor area over a substrate, the main display area including a main pixel, and the sensor area including an auxiliary pixel and a transmission portion, the forming of the display unit including preparing a hard substrate defining an empty space corresponding to a location of the transmission portion, forming a soft substrate on the hard substrate, forming the main display area and the sensor area on the soft substrate, forming a thin-film encapsulation layer covering the main display area and the sensor area, and forming a transmission hole in the empty space by removing the hard substrate, the transmission hole passing through from the soft substrate to the thin-film encapsulation layer, and arranging a component on one side of the substrate, the component for communicating a signal through the transmission portion.

First claim

What is claimed is:

1 . A display device comprising:
a substrate; a display unit over the substrate, and comprising a main display area comprising a main pixel, and a sensor area comprising an auxiliary pixel and a transmission portion; a thin-film encapsulation layer covering the main pixel and the auxiliary pixel of the display unit; and a component for exchanging a signal through the transmission portion, wherein the transmission portion comprises a transmission hole passing through from the substrate to the thin-film encapsulation layer.

2 . The display device of claim 1 , wherein the thin-film encapsulation layer comprises at least one organic layer and at least one inorganic layer that are stacked.

3 . The display device of claim 2 , further comprising a dam around the transmission hole for blocking the at least one organic layer of the thin-film encapsulation layer from flooding the transmission hole.

4 . The display device of claim 2 , wherein the at least one inorganic layer of the thin-film encapsulation layer covers an end of a layer between the substrate and the thin-film encapsulation layer, the end being adjacent the transmission hole.

5 . The display device of claim 4 , wherein the at least one inorganic layer of the thin-film encapsulation layer covers an end of the substrate adjacent the transmission hole.

6 . The display device of claim 2 , wherein the thin-film encapsulation layer comprises a plurality of inorganic layers with the at least one organic layer therebetween.

7 . The display device of claim 1 , wherein the substrate comprises a transformable soft substrate.

8 . The display device of claim 1 , wherein the component comprises a sensor, a lamp, or a speaker.

9 . A method of manufacturing a display device, the method comprising:
forming a display unit comprising a main display area and a sensor area over a substrate, the main display area comprising a main pixel, and the sensor area comprising an auxiliary pixel and a transmission portion, the forming of the display unit comprising:
preparing a hard substrate defining an empty space corresponding to a location of the transmission portion;
forming a soft substrate on the hard substrate;
forming the main display area and the sensor area on the soft substrate;
forming a thin-film encapsulation layer covering the main display area and the sensor area; and
forming a transmission hole in the empty space by removing the hard substrate, the transmission hole passing through from the soft substrate to the thin-film encapsulation layer; and
arranging a component on one side of the substrate, the component for communicating a signal through the transmission portion.

10 . The method of claim 9 , wherein the forming of the thin-film encapsulation layer comprises stacking at least one organic layer and at least one inorganic layer.

11 . The method of claim 10 , further comprising forming a dam around the transmission hole for blocking the at least one organic layer of the thin-film encapsulation layer from flooding the transmission hole.

12 . The method of claim 10 , wherein the at least one inorganic layer of the thin-film encapsulation layer covers an end of a layer between the soft substrate and the thin-film encapsulation layer, the end being adjacent the transmission hole.

13 . The method of claim 12 , wherein the at least one inorganic layer of the thin-film encapsulation layer covers an end of the soft substrate adjacent the transmission hole.

14 . The method of claim 10 , wherein the thin-film encapsulation layer comprises a plurality of inorganic layers with the at least one organic layer therebetween.

15 . The method of claim 9 , wherein the hard substrate comprises a glass substrate.

16 . The method of claim 9 , wherein the empty space comprises a hole that completely passes through the hard substrate, or a recess that is indented in the hard substrate, the hard substrate comprising a glass substrate.

17 . The method of claim 9 , wherein inner walls of the empty space that face each other are formed in parallel to each other.

18 . The method of claim 9 , wherein inner walls of the empty space that face each other are formed non-parallel to each other.

19 . The method of claim 9 , wherein the component comprises a sensor, a lamp, or a speaker.

20 . The method of claim 9 , further comprising using the empty space as a mark for alignment with a mask while the mask for forming the main display area and the sensor area is installed.

Assignees

• Samsung Display Co Ltd

Inventors

• Seo Hyunsang
• Kim Kihyun
• Park Younggil

Classifications

• H10K71/00

  Manufacture or treatment specially adapted for the organic devices covered by this subclass · CPC title

• H10K59/12

  Active-matrix OLED [AMOLED] displays · CPC title

• H10K59/40

  OLEDs integrated with touch screens · CPC title

• H10K59/8731 Primary

  multilayered coatings having a repetitive structure, e.g. having multiple organic-inorganic bilayers · CPC title

• H10K59/8722

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