APPARATUS AND METHOD FOR IMPACT RESISTANT TOUCHSCREEN DISPLAY MODULE

• US 20110261001A1
• Filed: 04/23/2010
• Published: 10/27/2011
• Est. Priority Date: 04/23/2010
• Status: Abandoned Application

• Current Assignee: Psion Teklogix (Motorola Solutions, Inc.)
• Original Assignee: Psion Teklogix (Motorola Solutions, Inc.)
• Inventors: Liu, Jin
• Application Number:
  US12/765,945
• Publication Number:
  US 20110261001A1
• Time in Patent Office: Days
• US Class Current: 345/174
• CPC Class Codes: G06F 1/1626 with a single-body enclosure integrating a flat display, e.g. Personal Digital Assistants [PDAs]
• CPC Class Codes: G06F 1/1643 the display being associated to a digitizer, e.g. laptops that can be used as penpads details related to the relative motion of the display enclosure with respect to the body enclosure, e.g. to move between laptop and tablet PC configuration G06F1/1615
• CPC Class Codes: G06F 3/03547 Touch pads, in which fingers can move on a surface
• CPC Class Codes: G06F 3/041 Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
• CPC Class Codes: H04M 1/0266 for a display module assembly
• CPC Class Codes: H04M 1/185 Improving the rigidity of the casing or resistance to shocks
• CPC Class Codes: H04M 2250/22 including a touch pad, a touch sensor or a touch detector

Abstract

A method and apparatus for an impact resistant touchscreen display module, such as for use in ruggedized handheld computing and display devices. The structure provided also allows for severability of the touchscreen and display screen portions, enhancing the practicability of replacing individual components for repair of a damaged touchscreen display module.

Claims

1. A touchscreen display module for use in a graphical user interface of an electronic device comprising:

a touchscreen panel having a generally planar disposition, the touchscreen panel comprising a touch-sensitive region surrounded by a non-touch sensitive periphery, the touch-sensitive region comprising a substantial portion of the touchscreen panel;

a rigid spacer underlaying the non-touch sensitive periphery of the touchscreen panel, the rigid spacer securely disposed in contact with non-touch sensitive periphery of the touchscreen panel by an adhesive layer;

a compliant layer underlaying the rigid spacer, the compliant layer disposed in contact with the rigid spacer;

a display screen underlaying the compliant layer, the display screen having a generally planar display portion provided to directly underlay the touch-sensitive region of the touchscreen; and

a touchscreen housing assembly comprising a base bezel portion and a top bezel portion, the touchscreen housing assembly adapted to securely frame the display screen, the compliant layer, the rigid spacer, and the touchscreen panel.

2. The touchscreen display module of claim 1 further comprising a sealing layer interposed between the non-touch sensitive periphery of the touchscreen panel and the top bezel portion.

4. The touchscreen display module of claim 1 wherein the compliant layer is a selected from the group of compliant materials consisting of a foam, a gel, and a thermo-plastic elastomer.

5. The touchscreen display module of claim 1 wherein at least the touch-sensitive region of the touchscreen panel is selected from the group of touchscreens consisting of a resistive, an acoustic, a capacitive, an infrared and a force-sensitive touchscreen.

6. The touchscreen display module of claim 1 wherein the touch-sensitive region of the touchscreen panel is rectangular in shape.

3. The touchscreen display module of claim 3 wherein the sealing layer comprises a chemical-resistant, dust-resistant and shock-resistant compliant material.

7. A handheld device comprising:

a processor;

a memory coupled to the processor having instructions stored therein for execution by the processor;

a touchscreen display module for displaying graphical images processed by the processor using the instructions stored in the memory, the touchscreen display module comprising;

a touchscreen panel having a generally planar disposition, the touchscreen panel comprising a touch-sensitive region surrounded by a non-touch sensitive peripheral region, the touch-sensitive region comprising a substantial portion of the touchscreen panel;

a rigid spacer shaped to underlay the non-touch sensitive peripheral region of the touchscreen panel;

a compliant layer underlaying the rigid spacer, the compliant layer disposed in contact with the rigid spacer;

a display screen underlaying the compliant layer, the display screen having a generally planar display portion provided to directly underlay the touch-sensitive region of the touchscreen; and

a touchscreen housing assembly comprising a base bezel portion and a top bezel portion, the touchscreen housing assembly adapted to securely frame the display screen, the compliant layer, the rigid spacer, and the touchscreen panel.

8. The handheld device of claim 7 further comprising a sealing layer interposed between the non-touch sensitive periphery of the touchscreen panel and the top bezel portion.

9. The handheld device of claim 8 wherein the sealing layer comprises a chemical-resistant, dust-resistant and shock-resistant compliant material.

10. The handheld device of claim 7 wherein the compliant layer is a selected from the group of compliant materials consisting of a foam, a gel, and a thermo-plastic elastomer.

11. The handheld device of claim 7 wherein at least the touch-sensitive region of the touchscreen panel is selected from the group of touchscreens consisting of a resistive, an acoustic, a capacitive, an infrared and a force-sensitive touchscreen.

12. A method for assembling a touchscreen display module comprising:

providing a touchscreen panel having a generally planar disposition, the touchscreen panel comprising a touch-sensitive region surrounded by a non-touch sensitive periphery, the touch-sensitive region comprising a substantial portion of the touchscreen panel;

providing a rigid spacer underlaying the non-touch sensitive periphery of the touchscreen panel, the rigid spacer securely disposed in contact with non-touch sensitive periphery of the touchscreen panel by an adhesive layer;

providing a compliant layer underlaying the rigid spacer, the compliant layer disposed in contact with the rigid spacer;

providing a display screen underlaying the compliant layer, the display screen having a generally planar display portion provided to directly underlay the touch-sensitive region of the touchscreen; and

providing a touchscreen housing assembly comprising a base bezel portion and a top bezel portion, the touchscreen housing assembly adapted to securely frame the display screen, the compliant layer, the rigid spacer, and the touchscreen panel.

13. The method of claim 12 further comprising providing a sealing layer interposed between the non-touch sensitive periphery of the touchscreen panel and the top bezel portion.

14. The method of claim 13 wherein the sealing layer comprises a chemical-resistant, dust-resistant and shock-resistant compliant material.

15. The method of claim 12 further comprising providing the compliant layer selected from the group of compliant materials consisting of a foam, a gel, and a thermo-plastic elastomer.

16. The method of claim 12 further comprising providing at least the touch-sensitive region of the touchscreen panel selected from the group of touchscreens consisting of a resistive, an acoustic, a capacitive, an infrared and a force-sensitive touchscreen.