ORGANIC ELECTROLUMINESCENT DISPLAY DEVICE AND METHOD OF MANUFACTURING THE SAME

• US 20080064286A1
• Filed: 11/02/2007
• Published: 03/13/2008
• Est. Priority Date: 04/12/2003
• Status: Active Grant

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung SDI Company Limited
• Inventors: PARK, Jin-Woo, LEE, Jong-Hyuk
• Granted Patent: US 8,652,566 B2
• Time in Patent Office: Days
• US Class Current: 445/25
• CPC Class Codes: H10K 2102/00 Constructional details relating to the organic devices covered by this subclass
• CPC Class Codes: H10K 2102/3026 Top emission
• CPC Class Codes: H10K 2102/351 Thickness
• CPC Class Codes: H10K 50/81 Anodes
• CPC Class Codes: H10K 50/82 Cathodes
• CPC Class Codes: H10K 50/84 Passivation; Containers; Encapsulations
• CPC Class Codes: H10K 50/841 Self-supporting sealing arrangements
• CPC Class Codes: H10K 50/8426 Peripheral sealing arrangements, e.g. adhesives, sealants
• CPC Class Codes: H10K 50/844 Encapsulations
• CPC Class Codes: H10K 50/846 comprising getter material or desiccants
• CPC Class Codes: H10K 71/00 Manufacture or treatment specially adapted for the organic devices covered by this subclass

Abstract

An organic electroluminescent (EL) display device and a method of manufacturing the same are provided. The organic electroluminescent display device includes a rear substrate, a organic EL portion formed on one surface of the rear substrate with a first electrode, an organic layer and a second electrode sequentially laminated. The front substrate is coupled to the rear substrate to seal an internal space in which the organic EL portion is accommodated, for isolating the organic EL portion from the outside. The front substrate further has a transparent moisture-absorbing layer coated on its internal surface.

Claims

1. A method of manufacturing an organic electroluminescent display device comprising:

preparing a rear substrate having an organic electroluminescent portion;

coating a mixture comprising polymer, silicate, and solvent on an internal surface of a front substrate;

curing the mixture so that the polymer is burnt, whereby the mixture is formed to a porous silica layer;

coating a sealant on a portion outside an organic electroluminescent portion disposed on at least one of the rear substrate and the front substrate; and

assembling the rear substrate and the front substrate.

2. The method of claim 1, further comprising curing the sealant.

3. The method of claim 1, further comprising one of making the internal space defined by the rear substrate and the front substrate vacuous, and filling the internal space with an inert gas.

4. The method of claim 3, further comprising curing the sealant.

5. A method of manufacturing a plurality of organic electroluminescent display devices comprising:

preparing a rear substrate having a plurality of organic electroluminescent portions;

coating a mixture comprising polymer, silicate, and solvent on an internal surface of a front substrate;

curing the mixture so that the polymer is burnt, whereby the mixture is formed to a porous silica layer;

coating a sealant on portions outside the plurality of electroluminescent portions disposed on at least one of the rear substrate and the front substrate;

assembling the rear substrate and the front substrate, thereby forming a panel having a plurality of organic electroluminescent display devices; and

cutting the panel to manufacture the plurality of organic electroluminescent display devices.

6. The method of claim 5, further comprising curing the sealant.

7. The method of claim 5, further comprising one of making the internal space defined by the rear substrate and the front substrate vacuous, and or filling the internal space with an inert gas.

8. The method of claim 7, further comprising curing the sealant.