Display Screen

• US 20170168626A1
• Filed: 02/15/2017
• Published: 06/15/2017
• Est. Priority Date: 03/17/2006
• Status: Abandoned Application

• Current Assignee: Jeffrey C. Konicek
• Original Assignee: Jeffrey C. Konicek
• Inventors: Konicek, Jeffrey C.
• Application Number:
  US15/434,020
• Publication Number:
  US 20170168626A1
• Time in Patent Office: Days
• CPC Class Codes: G06F 2203/04101 2.5D-digitiser, i.e. digitiser detecting the X/Y position of the input means, finger or stylus, also when it does not touch, but is proximate to the digitiser's interaction surface and also measures the distance of the input means within a short range in the Z direction, possibly with a separate measurement setup
• CPC Class Codes: G06F 2203/04103 Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
• CPC Class Codes: G06F 2203/04105 Pressure sensors for measuring the pressure or force exerted on the touch surface without providing the touch position
• CPC Class Codes: G06F 2203/04111 Cross over in capacitive digitiser, i.e. details of structures for connecting electrodes of the sensing pattern where the connections cross each other, e.g. bridge structures comprising an insulating layer, or vias through substrate
• 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: G06F 3/04184 Synchronisation with the driving of the display or the backlighting unit to avoid interferences generated internally
• CPC Class Codes: G06F 3/044 by capacitive means
• CPC Class Codes: G06F 3/0443 using a single layer of sensing electrodes
• CPC Class Codes: G06F 3/0444 using a single conductive element covering the whole sensing surface, e.g. by sensing the electrical current flowing at the corners
• CPC Class Codes: G06V 40/12 Fingerprints or palmprints

Abstract

A system and method are disclosed that determines the location of an object touching a display screen. The system and method modifies already existing display technology, including using the underlying structure of many types of existing displays as the touch detecting structure. The systems and methods are applicable to virtually all LCD and LCD-like displays, including emissive displays (OLED, PLED, quantum dot displays, etc.), electronic paper, and others.

Claims

1-13. -13. (canceled)

14. A touch screen comprising:

a. a group of display pixels, each display pixel including display circuitry that includes a circuit element; and

b. touch sensing circuitry in one or more of the display pixels including;

a conductive portion that includes one of the circuit elements wherein the conductive portion is a common electrode,

first and second conductive lines, each of the first and the second conductive lines extending from the display pixel to an outer edge of the group of display pixels,

a first switch that connects and disconnects the first conductive line to the conductive portion, and

a second switch that connects and disconnects the second conductive line to the conductive portion.

15. The touch screen of claim 14, wherein the circuit elements include common electrodes.

16. The touch screen of claim 14, wherein each of the first conductive lines is electrically connected to a plurality of first switches.

17. The touch screen of claim 14, wherein the second conductive lines include data lines of the display circuitry.

18. The touch screen of claim 14, wherein the first switch is a thin film transistor.

19. The touch screen of claim 14, wherein the conductive portion includes the circuit element of a first display pixel electrically connected by a bridge to the circuit element of a second display pixel.

20. The touch screen of claim 19, wherein the first and second display pixels are adjacent to each other.

21. The touch screen of claim 19, wherein the first switch is located in the first display pixel and the second switch is located in the second display pixel.