Protective layer for use in computing devices with touch-sensitive surfaces

• US 7,944,436 B2
• Filed: 04/28/2006
• Issued: 05/17/2011
• Est. Priority Date: 04/28/2006
• Status: Expired due to Fees

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Inventors: Misch, Felipe, Peters, David
• Primary Examiner(s): Shankar; Vijay
• Application Number:
  US11/380,918
• Publication Number:
  US 20070252819A1
• Time in Patent Office: 1,845 Days
• Field of Search: 345173-179, 178 1801- 1807, 178 1901- 1906
• US Class Current: 345/174
• CPC Class Codes: G06F 1/1601 Constructional details related to the housing of computer displays, e.g. of CRT monitors, of flat displays constructional details related to flat displays integrated in a portable computer, e.g. laptop, handheld computer G06F1/1637; constructional details related to television receivers H04N5/64
• CPC Class Codes: G06F 3/041 Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means

Abstract

A computing device is disclosed comprising a touch-sensitive surface, a housing structure, and a protective layer. The touch-sensitive surface receives touch as input, and a housing structure has a tip segment that overlays the touch-sensitive surface. This tip segment of the housing structure is positioned to form a gap over the touch-sensitive surface. The protective layer is positioned to contact the tip segment of the housing structure and the touch-sensitive surface so as to form an obstruction in the gap against intrusions, such as debris buildup, for example.

Claims

1. An integrated protective layer for a computing device, the integrated protective layer comprising:

a first layer formed from a first material, wherein the first layer includes a void that is dimensioned to that a portion of the first layer positioned on a perimeter of an available display area of a touch-sensitive display component on the computing device so as to overlay the touch-sensitive display component, and wherein the first layer is formed from a first material having a first characteristic compression force, wherein the first layer has a thickness that obstructs one or more gaps formed between a housing structure of the computing device and the touch-sensitive display component of the computing device; and

a second layer formed on one or more regions of the first layer, wherein the second layer is formed from a second material having a second characteristic compression force, wherein the second layer is positioned relative to the first layer so that when the housing structure of the computing device is placed over the integrated protective layer, the second layer is compressed by an interior surface of the housing structure;

and wherein the characteristic compression force of the first material enables the first layer to deform over the touch-sensitive display component without causing an input to register with the touch-sensitive display component; and

wherein the characteristic compression force of the second material enables the second layer to provide resilient support to the housing structure when compressed by the housing structure.

2. The integrated protective layer of claim 1, wherein the first material is formed from open cell foam.

3. A computing device comprising:

a touch-sensitive display component;

a housing structure having a tip segment that overlays the display component, wherein the tip segment forms a gap over the display component, wherein the housing structure defines an interior of the housing structure that is near the touch-sensitive display component;

a low compression gasket positioned to contact the tip segment of the housing structure and the touch-sensitive surface so as to form an obstruction in the gap against intrusions; and

a high compression gasket positioned in the interior and dimensioned to provide resilient support to the housing structure.

4. The computing device of claim 3, wherein the low compression and high compression gasket form an integrated protective layer formed from two or more materials, wherein a characteristic compression force of a material of the low compression gasket is less than a minimum force needed to register input with the touch-sensitive display component, and wherein a characteristic compression force of a material of the high compression gasket is less greater than characteristic compression force of the material of the low compression gasket.

5. The computing device of claim 4, wherein the low compression gasket is formed from an open cell foam.

6. The computing device of claim 3, wherein the low compression gasket is recessed in the gap from an available region of the display component.

7. The computing device of claim 4, wherein the low compression gasket has a characteristic compression force that is of one or more orders of magnitude greater than a characteristic compression force of the high compression gasket.

8. The computing device of claim 3, wherein the high compression gasket is at least partially overlaid on a section of the low compression gasket that extends away from touch-sensitive surface.