Display Devices With Integrated Optical Components For Use in Position Detection

• US 20100315379A1
• Filed: 05/24/2010
• Published: 12/16/2010
• Est. Priority Date: 05/22/2009
• Status: Abandoned Application

• Current Assignee: Next Holdings Ltd. (Hon Hai Precision Industry Co., Ltd.)
• Original Assignee: Next Holdings Ltd. (Hon Hai Precision Industry Co., Ltd.)
• Inventors: Allard, Matthew, Bridger, Simon James, Devine, Nigel
• Application Number:
  US12/785,604
• Publication Number:
  US 20100315379A1
• Time in Patent Office: Days
• US Class Current: 345/175
• CPC Class Codes: G02F 1/133308 Support structures for LCD panels, e.g. frames or bezels
• CPC Class Codes: G02F 1/13338 Input devices, e.g. touch panels
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/042 by opto-electronic means
• CPC Class Codes: G06F 3/0428 by sensing at the edges of the touch surface the interruption of optical paths, e.g. an illumination plane, parallel to the touch surface which may be virtual sensing beam interruptions in a planar beam grid of an optical touch-screen G06F3/0421

Abstract

Displays, such as LCD displays, can include integrated optical components such as energy emitters, detectors, reflective material, etc. for position detection based on energy traveling over a touch surface. A display device comprising a panel can accommodate at least one optical component to direct light over the touch surface and/or to receive light directed over the touch surface. The touch surface may be part of the display or a layer atop the display. The device with integrated component(s) can be included in a display, which includes a display bezel. Embodiments may use a frame structure to position an optical component close to the top surface of the display and may be mounted to a flat panel atop the panel bezel and beneath the display bezel and/or a transparent member can interface with a support member which supports optical component(s) that direct and/or receive light traveling over the transparent member.

Claims

1. A touch-enabled display, comprising:

a display device comprising a generally planar panel;

a panel bezel surrounding the panel at edges of the panel;

a screen bezel surrounding the display device and the panel bezel; and

at least one optical component,

wherein the at least one optical component is positioned between the panel and the panel bezel.

2. The touch-enabled display set forth in claim 1,

wherein the panel comprises an LCD panel with a polarizer defining a top surface of the panel, and

wherein the at least one optical component is secured to the polarizer.

3. The touch-enabled display set forth in claim 1,

wherein the display device comprises a polarizer and a transparent member atop the polarizer, and

wherein the at least one optical component is secured to the transparent member.

4. The touch-enabled display set forth in claim 1,

wherein the at least one optical component comprises a reflective material affixed to a support member.

5. The touch-enabled display set forth in claim 1, wherein the at least one optical component comprises an energy detector.

6. The touch-enabled display set forth in claim 1,

wherein the panel bezel comprises a support portion that extends toward the plane from a portion of the panel bezel parallel to and above the plane, and

wherein the support portion is adapted to receive the optical component.

7. The touch-enabled display set forth in claim 6,

wherein the panel bezel is adapted to receive a portion of the screen bezel to secure the screen bezel and the panel bezel.

8. The touch-enabled display set forth in claim 1, wherein the at least one optical component comprises a reflective material affixed to a support member,

wherein the touch-enabled display further comprises a frame member fitted to the panel over the panel bezel, the frame member comprising at least one additional optical component, and

wherein the frame member is positioned between the panel bezel and the screen bezel.

9. A touch-enabled display, comprising:

a display device comprising a generally planar panel;

a panel bezel surrounding the panel at edges of the panel;

a frame member fitted to the panel over the panel bezel, the frame member comprising at least one additional optical component;

a screen bezel surrounding the display device, the panel bezel, and the frame member, and

at least one optical component carried by the frame member and positioned proximate to the panel.

10. The touch-enabled display set forth in claim 9, wherein the at least one optical component comprises a detector.

11. The touch-enabled display set forth in claim 9, further comprising a reflective material positioned proximate the panel and in the field of view of the detector.

12. The touch-enabled display set forth in claim 11, wherein the reflective material is positioned on a support member, the support member between a surface of the panel and the panel bezel.

13. The touch-enabled display set forth in claim 11, wherein the reflective material is positioned on the frame so that when the frame is fitted to the panel, the reflective material is in the field of view of the detector.

14. A method of assembling a touch-enabled display, the method comprising:

providing a display device defining a panel;

positioning at least one optical component proximate a surface defined by the display device; and

fitting a screen bezel over the panel and the at least one optical component.

15. The method set forth in claim 14,

wherein the display device comprises a panel bezel, and

wherein positioning the at least one optical component comprises positioning the at least one optical component on the surface so that the component is between the surface and the panel bezel.

16. The method set forth in claim 14,

wherein the display device comprises a panel bezel, and

wherein positioning the at least one optical component comprises fitting a frame carrying the at least one optical component to the panel and panel bezel,

wherein the screen bezel surrounds the panel and the frame.

17. The method set forth in claim 14, wherein positioning the at least one optical component comprises:

providing a transparent member having a corner cut to define a corner portion,

attaching a support member at the corner portion,

positioning the optical component on the support member, and

prior to fitting the screen bezel over the panel, placing the transparent member over the panel so that the optical component is proximate the surface.

18. The method set forth in claim 17, wherein the support member defines a top side and a bottom side, the top side of the support member placed in contact with an underside of the transparent member so that when the optical component is positioned on the top side of the support member, a field of view of the optical component encompasses at least a portion of the top side of the transparent member.

19. The method set forth in claim 14, wherein the optical component comprises a detector.