Method of manufacturing display apparatus including touch pattern unit

• US 9,401,479 B2
• Filed: 01/06/2015
• Issued: 07/26/2016
• Est. Priority Date: 03/06/2014
• Status: Active Grant

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Inventors: Lee, Jonghwan, Kim, Taehwan, Lee, Boram, Kim, Sangil, Kim, Jongseong
• Primary Examiner(s): Dulka, John P
• Application Number:
  US14/590,257
• Publication Number:
  US 20150255722A1
• Time in Patent Office: 567 Days
• US Class Current: 1/1
• CPC Class Codes: G02F 1/1333 Constructional arrangements; Manufacturing methodsG02F1/135, G02F1/136 take precedence
• CPC Class Codes: G02F 1/13338 Input devices, e.g. touch panels
• CPC Class Codes: G06F 2203/04103 Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/0443 using a single layer of sensing electrodes
• CPC Class Codes: G06F 3/0446 using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
• CPC Class Codes: H10K 59/40 OLEDs integrated with touch screens
• CPC Class Codes: H10K 71/50 Forming devices by joining two substrates together, e.g. lamination techniques
• CPC Class Codes: H10K 71/80 using temporary substrates

Abstract

A method of manufacturing a display apparatus includes: joining a first thin-film glass substrate onto a first carrier substrate; providing a touch pattern unit on a surface of the first thin-film glass substrate, which is opposite to a surface facing the first carrier substrate; separating the first thin-film glass substrate from the first carrier substrate; turning over the first thin-film glass substrate and joining the turned over first thin-film glass substrate onto the first carrier substrate; joining a second thin-film glass substrate onto a second carrier substrate; providing a display unit between the surface of the first thin-film glass substrate opposite to the surface on which the touch pattern unit is provided and a surface of the second thin-film glass substrate, which is opposite to a surface facing the second carrier substrate; and removing the first carrier substrate and the second carrier substrate.

Claims

1. A method of manufacturing a display apparatus, the method comprising:

joining a first thin-film glass substrate onto a first carrier substrate;

providing a touch pattern unit for sensing a touch of a user on a surface of the first thin-film glass substrate, which is opposite to a surface of the first thin-film glass substrate facing the first carrier substrate;

separating the first thin-film glass substrate, on which the touch pattern unit is provided, from the first carrier substrate;

turning over the first thin-film glass substrate to allow the touch pattern unit to face the first carrier substrate, and joining the turned first thin-film glass substrate onto the first carrier substrate;

joining a second thin-film glass substrate onto a second carrier substrate;

providing a display unit for displaying an image between the surface of the first thin-film glass substrate opposite to the surface of the first thin-film glass substrate on which the touch pattern unit is provided and a surface of the second thin-film glass substrate, which is opposite to a surface of the second thin-film glass substrate facing the second carrier substrate; and

removing the first carrier substrate and the second carrier substrate.

2. The method of claim 1, wherein

the joining the first thin-film glass substrate onto the first carrier substrate comprises:

providing a surface treatment layer having a hydrophobic property on one surface of the first carrier substrate by performing a surface treatment on the one surface of the first carrier substrate; and

arranging the first thin-film glass substrate to contact the surface treatment layer on the one surface of the first carrier substrate, and

the joining the second thin-film glass substrate onto the second carrier substrate comprises;

providing a surface treatment layer having a hydrophobic property on one surface of the second carrier substrate by performing a surface treatment on the one surface of the second carrier substrate; and

arranging the second thin-film glass substrate to contact the surface treatment layer on the one surface of the second carrier substrate.

3. The method of claim 2, wherein

the providing the surface treatment layer on the one surface of the first carrier substrate comprises coating a solution including hexamethyldisilazane on the one surface of the first carrier substrate, and

the providing the surface treatment layer on the one surface of the second carrier substrate comprises coating a solution including hexamethyldisilazane on the one surface of the second carrier substrate.

4. The method of claim 2, wherein

the providing the surface treatment layer on the one surface of the first carrier substrate comprises providing an inorganic layer on the one surface of the first carrier substrate, and controlling the surface roughness of the inorganic layer on the one surface of the first carrier substrate, and

the providing the surface treatment layer on the one surface of the second carrier substrate comprises providing an inorganic layer on the one surface of the second carrier substrate, and controlling the surface roughness of the inorganic layer on the one surface of the second carrier substrate.

5. The method of claim 1, wherein the turning-over the first thin-film glass substrate to allow the touch pattern unit to face the first carrier substrate and the joining the turned over first thin-film glass substrate onto the first carrier substrate comprises:

providing a surface treatment layer having a hydrophobic property on one surface of the first carrier substrate by performing a surface treatment on the one surface of the first carrier substrate; and

arranging the first thin-film glass substrate to allow the touch pattern unit to contact the surface treatment layer.

6. The method of claim 5, wherein the providing the surface treatment layer comprises coating a solution including hexamethyldisilazane on the one surface of the first carrier substrate.

7. The method of claim 5, wherein the providing the surface treatment layer comprises providing an inorganic layer on the one surface of the first carrier substrate and controlling the surface roughness of the inorganic layer.

8. The method of claim 1, wherein the providing the touch pattern unit which senses the touch of the user on the surface of the first thin-film glass substrate opposite to the surface thereof facing the first carrier substrate comprises providing a protective layer on a surface of the touch pattern unit, which is opposite to a surface thereof facing the first thin-film glass substrate.

9. The method of claim 8, wherein the turning-over the first thin-film glass substrate to allow the touch pattern unit to face the first carrier substrate and the joining the turned over first thin-film glass substrate onto the first carrier substrate comprises arranging the first thin-film glass substrate to allow the protective layer of the touch pattern unit to face the first carrier substrate.

10. The method of claim 8, wherein a surface of the protective layer, which is opposite to a surface thereof facing the first thin-film glass substrate, is a planar surface.

11. The method of claim 8, wherein the protective layer comprises an organic material.

12. The method of claim 8, wherein

the providing the touch pattern unit comprises providing a first conductive pattern, and a second conductive pattern which is spaced apart from the first conductive pattern, and

the protective layer is provided on the first conductive pattern and the second conductive pattern.

13. The method of claim 12, wherein the providing the touch pattern unit comprises:

providing a plurality of first conductive patterns;

providing a second conductive pattern which is spaced from the first conductive patterns;

providing a bridge which connects the first conductive patterns to each; and

providing an insulating pattern between the second conductive pattern and the bridge.

14. The method of claim 1, wherein the providing the display unit comprises providing a liquid crystal layer between the first thin-film glass substrate and the second thin-film glass substrate.

15. The method of claim 14, wherein the providing the display unit comprises providing a color filter between the first thin-film glass substrate and the second thin-film glass substrate.

16. The method of claim 15, wherein the providing the color filter comprises forming the color filter on the surface of the first thin-film glass substrate that is opposite to the surface thereof on which the touch pattern unit is formed.

17. The method of claim 14, wherein the providing the display unit comprises providing a thin-film transistor, which is electrically connected to the liquid crystal layer, on the surface of the second thin-film glass substrate opposite to the surface thereof facing the second carrier substrate.

18. The method of claim 1, wherein

the providing the display unit comprises providing an organic light-emitting device between the first thin-film glass substrate and the second thin-film glass substrate,

the organic light-emitting device comprises:

a first electrode;

a second electrode disposed opposite to the first electrode; and

an intermediate layer disposed between the first electrode and the second electrode and comprising an organic emission layer.

19. The method of claim 18, wherein the providing the organic light-emitting device comprises providing the organic light-emitting device on the surface of the second thin-film glass substrate opposite to the surface thereof facing the second carrier substrate.

20. The method of claim 18, wherein the providing the display unit comprises providing a thin-film transistor, which is electrically connected to the organic emission layer, on the surface of the second thin-film glass substrate opposite to the surface thereof facing the second carrier substrate.