Edge to edge touch screen

• US 9,250,744 B2
• Filed: 04/18/2013
• Issued: 02/02/2016
• Est. Priority Date: 04/18/2013
• Status: Active Grant

• Current Assignee: E. I. du Pont de Nemours and Company (Corteva, Inc.), Dell Products LP (Dell Technologies Inc.)
• Original Assignee: Dell Products LP (Dell Technologies Inc.)
• Inventors: Bui, Vinh X., Pelissier, Gerald R., Luecke, Alan, Wang, Shih-Kai
• Primary Examiner(s): Tzeng, Fred
• Application Number:
  US13/865,806
• Publication Number:
  US 20140313430A1
• Time in Patent Office: 1,020 Days
• Field of Search: 345/173
• US Class Current: 1/1
• CPC Class Codes: G02B 6/0023 provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
• CPC Class Codes: G02B 6/43 Arrangements comprising a plurality of opto-electronic elements and associated optical interconnections
• CPC Class Codes: G06F 3/0421 by interrupting or reflecting a light beam, e.g. optical touch-screen
• CPC Class Codes: Y10T 29/49105 Switch making

Abstract

A method includes printing a colorant on a film to define an opaque border region and a transparent active display area portion, bonding the film to a waveguide, and assembling a touch screen. The touch screen includes a display assembly for displaying images, an emitter/detector assembly, the waveguide, and the film.

Claims

1. An information handling system comprising:

a processor;

a storage device in communication with the processor; and

a touch sensitive display assembly in communication with the processor, the touch sensitive display assembly comprising;

a display assembly operable to display images;

an emitter/detector assembly;

a waveguide;

a surface film overlying the waveguide, the surface film including a border portion overlying the emitter/detector assembly, the border portion being opaque; and

an active display area portion overlying at least a portion of the display assembly, the active display area portion being transparent.

2. The information handling system of claim 1, wherein the waveguide includes glass.

3. The information handling system of claim 1, wherein the waveguide includes poly(methyl methacrylate).

4. The information handling system of claim 1, wherein the surface film includes polyethylene terephthalate.

5. The information handling system of claim 4, wherein the surface film has a thickness of between about 0.1 mm and 1.0 mm.

6. The information handling system of claim 4, wherein the surface film includes a colorant within the border portion.

7. The information handling system of claim 4, wherein the surface film includes multiple colorants within the border portion arranged to form a pattern or text that can be seen when viewing the touch sensitive display assembly.

8. An touch sensitive display assembly comprising:

a display assembly operable to display images;

an emitter/detector assembly;

a waveguide;

a surface film overlying the waveguide, the surface film including a border portion overlying the emitter/detector assembly, the border portion being opaque; and

an active display area portion overlying at least a portion of the display assembly, the active display area portion being transparent.

9. The touch sensitive display assembly of claim 8, wherein the waveguide includes glass.

10. The touch sensitive display assembly of claim 8, wherein the waveguide includes poly(methyl methacrylate).

11. The touch sensitive display assembly of claim 8, wherein the surface film includes polyethylene terephthalate.

12. The touch sensitive display assembly of claim 11, wherein the surface film has a thickness of between about 0.1 mm and 1.0 mm.

13. The touch sensitive display assembly of claim 11, wherein the surface film includes a colorant within the border portion.

14. The touch sensitive display assembly of claim 11, wherein the surface film includes multiple colorants within the border portion arranged to form a pattern or text that can be seen when viewing the touch sensitive display assembly.

15. A method comprising:

printing a colorant on a film to define an opaque border region and a transparent active display area portion;

bonding the film to a waveguide; and

assembling a touch screen display assembly comprising;

a display assembly operable to display images;

an emitter/detector assembly;

the waveguide; and

the film;

wherein the border portion overlies the emitter/detector assembly and the active display area portion overlies at least a portion of the display assembly.

16. The method of claim 15, wherein the film includes polyethylene terephthalate.

17. The method of claim 15, wherein the waveguide includes glass.

18. The method of claim 15, wherein waveguide includes poly(methyl methacrylate).

19. The method of claim 15, wherein printing includes applying the colorant as a solid color to the border region.

20. The method of claim 15, wherein printing includes applying multiple colorants to form a pattern or text that can be seen when viewing the touch sensitive display assembly.