Device and methods for manufacturing an organic light-emitting display apparatus

• US 10,193,071 B2
• Filed: 04/26/2016
• Issued: 01/29/2019
• Est. Priority Date: 10/02/2015
• Status: Active Grant

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Inventors: Kwon, Seungwook
• Primary Examiner(s): Seven, Evren
• Application Number:
  US15/138,566
• Publication Number:
  US 20170098766A1
• Time in Patent Office: 1,008 Days
• Field of Search: None
• CPC Class Codes: H10K 50/15 Hole transporting layers
• CPC Class Codes: H10K 50/16 Electron transporting layers
• CPC Class Codes: H10K 50/17 Carrier injection layers
• CPC Class Codes: H10K 50/171 Electron injection layers
• CPC Class Codes: H10K 50/82 Cathodes
• CPC Class Codes: H10K 50/8445 multilayered coatings having a repetitive structure, e.g. having multiple organic-inorganic bilayers
• CPC Class Codes: H10K 59/1201 Manufacture or treatment
• CPC Class Codes: H10K 59/1213 the pixel elements being TFTs
• CPC Class Codes: H10K 59/122 Pixel-defining structures or layers, e.g. banks
• CPC Class Codes: H10K 59/35 comprising red-green-blue [RGB] subpixels
• CPC Class Codes: H10K 59/8731 multilayered coatings having a repetitive structure, e.g. having multiple organic-inorganic bilayers
• CPC Class Codes: H10K 71/00 Manufacture or treatment specially adapted for the organic devices covered by this subclass
• CPC Class Codes: H10K 71/135 using ink-jet printing
• CPC Class Codes: H10K 71/40 Thermal treatment, e.g. annealing in the presence of a solvent vapour
• CPC Class Codes: H10K 77/10 Substrates, e.g. flexible substrates
• CPC Class Codes: H10K 85/60 Organic compounds having low molecular weight H10K85/10 - H10K85/50 take precedence

Abstract

A method of manufacturing an organic light-emitting display apparatus includes: arranging a mask on a substrate, the mask having an opening corresponding to a pattern of an organic emission layer; forming the organic emission layer by disposing an inkjet roller on the mask, and discharging inks from ink headers mounted in the inkjet roller through the opening of the mask, by rotating the inkjet roller; and curing the organic emission layer.

Claims

1. A method of manufacturing an organic light-emitting display apparatus, the method comprising:

arranging a mask on a substrate, the mask having an opening corresponding to a pattern of an organic emission layer;

forming the organic emission layer by;

disposing an inkjet roller on the mask;

supplying inks from ink storage tanks external to the inkjet roller to connection tanks;

supplying the inks from the connection tanks mounted inside a central axis of the inkjet roller to ink headers mounted on the inkjet roller via connection pipes;

discharging the inks onto the substrate from the ink headers, through the opening of the mask, by rotating the inkjet roller according to a signal of a control unit; and

curing the organic emission layer,

wherein the connection tanks comprise a plurality of connection tanks respectively corresponding to colors of the organic emission layer and disposed inside the central axis of the inkjet roller and

wherein the plurality of connection tanks supplies the inks comprising the colors of the organic emission layer to corresponding ink headers of the ink headers mounted on the inkjet roller.

2. The method of claim 1, further comprising discharging the inks onto the substrate by transporting the substrate in one direction.

3. The method of claim 2, wherein the substrate is rigid.

4. The method of claim 2, wherein the substrate is flexible.

5. The method of claim 4, wherein:

a first roller and a second roller are provided at a front end and a rear end of the inkjet roller, and

the substrate is unrolled from the first roller and transported to the inkjet roller,

the inks are discharged onto the substrate by using the inkjet roller, and

the substrate is rolled onto the second roller.

6. The method of claim 1, wherein inks of different colors are discharged through the ink headers and onto the substrate from the inkjet roller.

7. The method of claim 6, wherein the inks of different colors correspond to colors of the organic emission layer.

8. The method of claim 7, wherein:

the ink headers are spaced apart from each other on an outer circumferential surface of the inkjet roller, and

the inks of different colors are sequentially discharged onto the substrate while the inkjet roller rotates.

9. The method of claim 7, wherein the inks of different colors are discharged from the ink headers, through the opening of the mask, and onto the substrate.

10. The method of claim 7, wherein an ink of one color is simultaneously loaded onto sub-pixels arranged in one line of the substrate.

11. The method of claim 1, wherein the inks discharged onto the substrate are cured by ultraviolet light.