Antenna integrated into a touch sensor of a touchscreen display

• US 10,186,754 B2
• Filed: 10/07/2015
• Issued: 01/22/2019
• Est. Priority Date: 12/22/2010
• Status: Active Grant

• Current Assignee: Intel Corporation
• Original Assignee: Intel Corporation
• Inventors: Yang, Songnan, Lin, Xintian E, Zhuang, Quanjie Forest, Karacaoglu, Ulun
• Primary Examiner(s): Han, Jessica
• Assistant Examiner(s): Bouizza, Michael
• Application Number:
  US14/877,231
• Publication Number:
  US 20160093943A1
• Time in Patent Office: 1,203 Days
• 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 1/1698 the I/O peripheral being a sending/receiving arrangement to establish a cordless communication link, e.g. radio or infrared link, integrated cellular phone details of antennas disposed inside a computer H01Q1/2266
• CPC Class Codes: G06F 2203/04103 Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
• CPC Class Codes: G06F 3/041 Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
• CPC Class Codes: H01Q 1/2266 disposed inside the computer
• CPC Class Codes: H01Q 1/243 with built-in antennas
• CPC Class Codes: H01Q 1/38 formed by a conductive layer on an insulating support patch antennas H01Q9/0407; microstrip dipole antennas H01Q9/065; microstrip slot antennas H01Q13/106; transmission line microstrip antennas H01Q13/206; manufacturing reflecting surfaces using insulating material for supporting the reflecting surface H01Q15/142
• CPC Class Codes: H01Q 7/00 Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
• CPC Class Codes: Y10T 29/49016 Antenna or wave energy "plumbing" making

Abstract

A touch sensor with a transparent conductive layer and a metalized border area at least partially bordering the transparent conductive layer and forming a far-field antenna.

Claims

1. An electronic device, comprising:

a touch sensor comprising electrode structures configured to determine a capacitance generated from a touch;

an antenna resonating structure configured to radiate or receive a signal; and

a radio frequency transmitter and receiver circuitry, coupled to the antenna resonating structure and the touch sensor, configured to transmit the signal via an antenna that is formed by the antenna resonating structure and the electrode structures,

wherein the electrode structures of the touch sensor form the antenna resonating structure configured to radiate or receive the signal, and further form a capacitor configured to provide the capacitance to the touch sensor in response to the touch, and wherein a non-conductive coupling comprising a proximity coupling operably couples the antenna resonating structure and the touch sensor with the radio frequency transmitter and receiver circuitry.

2. The electronic device of claim 1, wherein the antenna resonating structure and the touch sensor comprise a first conductive layer and a second conductive layer on opposite sides of an insulating material.

3. The electronic device of claim 1, wherein the antenna comprises an inverted F antenna.

4. The electronic device of claim 1, further comprising:

a first metalized border area and a second metalized border area of the electrode structures that face one another and form the electrode structures configured to detect a proximity data based on the capacitance from the touch.

5. The electronic device of claim 1, wherein the antenna resonating structure and the touch sensor comprise the first conductive layer and the second conductive layer that are connected to form one radiating structure.

6. The electronic device of claim 1, wherein the antenna resonating structure and the touch sensor comprise the first conductive layer and the second conductive layer comprising substantially similar patterns opposite one another.

7. The electronic device of claim 1, further comprising a casing having a touch screen display with a display screen coupled to the touch sensor, and an antenna feed, with a feed location and a ground location, coupled to the antenna resonating structure with the electrode structures.

8. A touch screen device, comprising:

a radio frequency transmitter and receiver circuitry;

a plurality of electrode structures on a first conductive layer and a second conductive layer, wherein the first conductive layer and the second conductive layer are opposite to one another and separated by an insulating material;

a sensor processor, operably coupled to the first conductive layer and the second conductive layer, configured to generate or process data related to a touch sensor based on a capacitance from the at least one of the first conductive layer or the second conductive layer; and

wherein the at least one of the first conductive layer or the second conductive layer forms an antenna resonating structure configured to receive or transmit data and forms a capacitor electrode configured to provide the capacitance, and wherein a non-conductive coupling comprising a proximity coupling that operably couples the antenna resonating structure and the touch sensor with the radio frequency transmitter and receiver circuitry.

9. The touch screen device of claim 8, wherein the first conductive layer and the second conductive layer comprise similar patterns forming the antenna resonating structure.

10. The touch screen device of claim 8, wherein the antenna resonating structure comprises a feeding location and a ground location.

11. The touch screen device of claim 8, wherein the first conductive layer and the second conductive layer comprise a metalized border area at least partially bordering a transparent conductive layer, the metalized border area forming the plurality of electrodes for detecting a position of a touch on a touch screen display.

12. The touch screen device of claim 8, further comprising an antenna, formed from the first conductive layer and the second conductive layer respectively.

13. The touch screen device of claim 12, wherein the antenna is operatively coupled to the radio frequency transmitter and receiver circuitry to transmit the data via the at least one of the first conductive layer or the second conductive layer.

14. The touch screen device of claim 12, wherein the antenna is an inverted F shaped antenna.

15. The touch screen device of claim 11, further comprising a removed portion of the metalized border area that is adjacent the plurality of electrodes.

16. An electronic device, comprising:

a radio frequency transmitter and receiver circuitry configured to transmit data;

a touch sensor configured to measure a capacitance; and

a plurality of conductive structures coupled to the touch sensor and the radio frequency transmitter and receiver circuitry, wherein at least one of the plurality of conductive structures forms an antenna resonating structure configured to receive or transmit the data and forms a capacitor electrode to provide the capacitance to the touch sensor to measure the capacitance, and wherein the plurality of conductive structures is operably coupled to the touch sensor and the radio frequency transmitter and receiver circuitry based on a non-conductive coupling comprising a proximity coupling having a capacitive structure.

17. The electronic device of claim 16, wherein the RF feed comprises a first conductor located on a ground plane and a second conductor on the at least one of the plurality of conductive structures forming the antenna resonating structure.

18. The electronic device of claim 16, further comprising a pair of conductive layers comprising the plurality of conductive structures and a dielectric between the pair of conductive layers.

19. The electronic device of claim 18, wherein the antenna resonating structure comprises an inverted F shaped antenna formed from the plurality of conductive layers.