TOUCH SCREEN DISPLAYS

• US 20150062448A1
• Filed: 08/30/2013
• Published: 03/05/2015
• Est. Priority Date: 08/30/2013
• Status: Abandoned Application

• Current Assignee: Intel Corporation
• Original Assignee: Intel Corporation
• Inventors: S., Arvind
• Application Number:
  US14/015,016
• Publication Number:
  US 20150062448A1
• Time in Patent Office: Days
• US Class Current: 349/12
• CPC Class Codes: G06F 1/169 the I/O peripheral being an integrated pointing device, e.g. trackball in the palm rest area, mini-joystick integrated between keyboard keys, touch pads or touch stripes G06F1/1643 takes precedence; constructional details of pointing devices G06F3/033
• CPC Class Codes: G06F 2203/04103 Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
• CPC Class Codes: G06F 2203/04104 Multi-touch detection in digitiser, i.e. details about the simultaneous detection of a plurality of touching locations, e.g. multiple fingers or pen and finger
• CPC Class Codes: G06F 2203/04106 Multi-sensing digitiser, i.e. digitiser using at least two different sensing technologies simultaneously or alternatively, e.g. for detecting pen and finger, for saving power or for improving position detection
• CPC Class Codes: G06F 3/03545 Pens or stylus
• 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 3/04166 Details of scanning methods, e.g. sampling time, grouping of sub areas or time sharing with display driving Synchronisation with the driving of the display or the backlighting unit to avoid interferences generated internally G06F3/04184
• CPC Class Codes: Y10T 156/10 Methods of surface bonding and/or assembly therefor

Abstract

An apparatus and system for a touchscreen display is provided. In an example, a computing device includes a display panel cover permanently bonded to a sensor panel, wherein the display panel cover is a scratch resistant plastic material, and the sensor panel includes a touch sensor that can detect at least 15 simultaneous touch inputs on the display cover.

Claims

1. A computing device comprising:

a display panel cover permanently bonded to a sensor panel, wherein the display panel cover is a scratch resistant plastic material; and

the sensor panel comprises a touch sensor that can detect at least 15 simultaneous touch inputs on the display cover.

2. The device of claim 1, comprising a portable all-in-one computer.

3. The device of claim 1, comprising a stylus antenna.

4. The device of claim 3, comprising a driver configured to scan the touch sensor at about 50 hertz before the detection of a touch and at about 200 hertz after the detection of a touch.

5. The device of claim 3, comprising a driver configured to six frequency bands and accept input from at least two styluses substantially simultaneously.

6. The device of claim 3, wherein the touch sensor and the stylus antenna are configured to allow both touch input and stylus input.

7. The device of claim 1, comprising a touchscreen of greater than about 50 cm in diagonal measurement.

8. The device of claim 1, comprising:

an interface to accept video signals from a computer; and

an interface to provide touchscreen input to the computer.

9. A laminated display stack, comprising

a plastic display panel cover;

an adhesive layer;

a touch sensor configured to detect at least 15 simultaneous touch inputs;

a second adhesive layer; and

a display panel.

10. The laminated display stack of claim 9, comprising

a stylus antenna coupled to the second adhesive layer;

and

a third adhesive layer coupled to the display panel.

11. The laminated display stack of claim 9, wherein the plastic display panel cover comprises a polymethylmethacrylate (PMMA) polymer.

12. The laminated display stack of claim 9, wherein the plastic display panel cover comprises a polycarbonate, an acrylic polymer, or a transparent polymer.

13. The laminated display stack of claim 9, wherein the touch sensor comprises a wire mesh and wherein each wire is about 30 microns in diameter and each wire is spaced about 30 microns apart.

14. The laminated display stack of claim 9, wherein the display panel comprises a liquid crystal device display (LCD) panel.

15. The laminated display stack of claim 14, comprising a brightness enhancing film (BEF), a dual brightness enhancing film (dBEF), a prism film, or any combinations thereof.

16. The laminated display stack of claim 14, comprising a light source and a reflector.

17. The laminated display stack of claim 9, comprising an organic liquid crystal display (OLED).

18. A method for making a display, comprising:

affixing a touchscreen sensor to a display panel cover with an adhesive, wherein the touchscreen sensor comprises a metal mesh having a 30 micron separation between wires;

layering a second adhesive over the touchscreen sensor; and

affixing a display panel to the second adhesive layer.

19. The method of claim 18, comprising:

affixing a stylus antenna to the second adhesive layer over the touchscreen sensor;

layering a third adhesive over the stylus antenna; and

affixing a display panel to the third adhesive layer.

20. The method of claim 18, comprising assembling a display by placing the display panel over a brightness enhancing film, a prism film, a dBEF film, or any combinations thereof.

21. The method of claim 18, comprising placing the display panel over a light source.

22. The method of claim 18, comprising placing the display panel over a light source.

23. The method of claim 19, comprising:

coupling the display panel to a driver;

coupling the touchscreen sensor to a driver;

coupling the stylus antenna to a driver; and

mounting the display in a device.

24. A method for detecting a touch input on a touch screen, comprising:

scanning the touch screen at a first scan rate;

detecting a touch is present on the touch screen; and

increasing the scan rate to a second scan rate.

25. The method of claim 24, comprising increasing the scan rate for lines in the vicinity of the touch, while retaining a lower scan rate for lines not in the vicinity of the touch.

26. The method of claim 24, comprising detecting that a stylus input is present on the touch screen.

27. The method of claim 26, comprising responding to both the stylus input and the touch substantially simultaneously.