METHOD FOR MANUFACTURING AN INTEGRATED DISPLAY DEVICE INCLUDING AN OLED DISPLAY AND A TOUCH SCREEN

• US 20030150714A1
• Filed: 02/08/2002
• Published: 08/14/2003
• Est. Priority Date: 02/08/2002
• Status: Active Grant

• Current Assignee: Global OLED Technology LLC (LG Display Co., Ltd.)
• Original Assignee: Eastman Kodak Company
• Inventors: Cok, Ronald S., Feldman, Rodney, Cropper, Andre D.
• Granted Patent: US 6,623,608 B2
• Time in Patent Office: Days
• US Class Current: 204/192.29
• CPC Class Codes: C09K 2323/00 Functional layers of liquid crystal optical display excluding electroactive liquid crystal layer characterised by chemical composition
• CPC Class Codes: G06F 3/041 Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/045 using resistive elements, e.g. a single continuous surface or two parallel surfaces put in contact
• CPC Class Codes: H10K 59/12 Active-matrix OLED [AMOLED] displays
• CPC Class Codes: H10K 59/176 comprising two independent displays, e.g. for emitting information from two major sides of the display
• CPC Class Codes: H10K 59/40 OLEDs integrated with touch screens
• CPC Class Codes: H10K 71/00 Manufacture or treatment specially adapted for the organic devices covered by this subclass

Abstract

A method of manufacturing a display device having two components, an OLED display formed on a film on one side of a substrate and a touch screen formed on a film on the other side of the substrate, the OLED display including components that are sensitive to high temperatures, includes the steps of: partially forming one of the components on one side of the substrate; applying a protector over the partially constructed component; forming the other component of the display device on the other side of the substrate; removing the protector; and completing the formation of the one component on the one side of the substrate.

Claims

1. A method of manufacturing a display device having two components, an OLED display formed on a film on one side of a substrate and a touch screen formed on a film on the other side of the substrate, the OLED display including components that are sensitive to high temperatures, comprising the steps of:

a) partially forming one of the components on one side of the substrate;

b) applying a protector over the partially constructed component;

c) forming the other component of the display device on the other side of the substrate;

d) removing the protector; and

e) completing the formation of the one component on the one side of the substrate.

2. The method claimed in claim 1, wherein the one component is the OLED display.

3. The method claimed in claim 2, wherein the step of partially forming comprises the step of forming a conductive film.

4. The method claimed in claim 3, wherein the step of forming a film is a low temperature sputtering process.

5. The method claimed in claim 3, wherein the conductive film is indium tin oxide (ITO).

6. The method claimed in claim 3, wherein the step of forming a film is a high temperature sputtering process.

7. The method claimed in claim 1, wherein the step of partially forming comprises all of the steps of forming the OLED display prior to depositing the OLED materials.

8. The method claimed in claim 1, wherein the one component is the touch screen.

9. The method claimed in claim 8, wherein the step of partially forming the touch screen comprises the step of forming a resistive film.

10. The method claimed in claim 9, wherein the film is ITO.

11. The method claimed in claim 9, wherein the step of forming a film is a high temperature sputtering process.

12. The method claimed in claim 9, wherein the step of forming a film is a low temperature sputtering process.

13. The method claimed in claim12, wherein the film is ITO.

14. The method claimed in claim 1 wherein the display device is a passive-matrix display device.

15. The method claimed in claim 1 wherein the display device is an active-matrix display device.

16. The method claimed in claim 1, wherein the protector is a layer of silicon dioxide.

17. The method claimed in claim 1, wherein the protector is a layer of photo-resist.

18. The method claimed in claim 1, wherein the protector is a cover plate defining a cavity.

19. The method claimed in claim 2, wherein the OLED display is an active matrix OLED display.

20. The method claimed in claim 19, wherein the step of partially forming comprises the step of forming thin film transistor circuitry and a conductive film.

21. The method claimed in claim 20, wherein the step of partially forming further comprises all of the steps of forming the OLED display prior to depositing the OLED materials.

22. A display device manufactured according to the method of claim 1.