Method of manufacturing-OLED devices by deposition on curved substrates

• US 7,166,006 B2
• Filed: 02/18/2005
• Issued: 01/23/2007
• Est. Priority Date: 01/10/2003
• Status: Expired due to Term

• Current Assignee: Global OLED Technology LLC (LG Display Co., Ltd.)
• Original Assignee: Eastman Kodak Company
• Inventors: Cok, Ronald S.
• Primary Examiner(s): Santiago; Mariceli
• Application Number:
  US11/061,003
• Publication Number:
  US 20050170736A1
• Time in Patent Office: 704 Days
• Field of Search: 427/58, 427/66, 445/14, 445/24, 445/25
• US Class Current: 445/14
• CPC Class Codes: C23C 14/042 using masks
• CPC Class Codes: C23C 14/24 Vacuum evaporation
• CPC Class Codes: H10K 50/80 Constructional details
• CPC Class Codes: H10K 59/80 Constructional details
• CPC Class Codes: H10K 71/164 using vacuum deposition

Abstract

A method of making an OLED device includes the steps of: providing a curved, rigid substrate; and forming one or more OLED elements on the substrate.

Claims

1. A method of making an OLED device, comprising the steps of:

a) providing a curved, rigid substrate; and

b) forming one or more OLED elements on the substrates;

wherein the curved substrate has a cylindrical curve, and the step of forming the one or more OLED elements includes depositing material on the substrate from a linear source, where the linear source is positioned parallel to an axis of the cylindrical curve and either the linear source or the curved substrate is rotated about the cylindrical axis.

2. The method claimed in claim 1, wherein the step of forming the OLED element(s) includes evaporation of material from the linear source.

3. The method claimed in claim 1, wherein the step of forming the OLED element(s) includes depositing material with a stream of compressed fluid from the linear source.

4. The method claimed in claim 1, wherein the step of forming the OLED element(s) includes depositing material using a linear inkjet print head.

5. The method claimed in claim 1, wherein the OLED element(s) are formed on the inside of the curved substrate through a mask held in compression against the substrate.

6. The method claimed in claim 1, wherein the OLED element(s) are formed on the outside of the curved substrate through a mask held in tension against the substrate.

7. The method claimed in claim 1, wherein the cylindrical curve is circular.

8. The method claimed in claim 7, wherein the OLED element(s) are formed on the inside of the circular cylindrical curve and the linear source rotated with respect to the substrate about the cylindrical axis.

9. The method claimed in claim 7, wherein the OLED element(s) are formed on the outside of the circular cylindrical curve and the substrate is rotated with respect to the linear source about the cylindrical axis.