HYBRID TOUCH-BASED ELECTRONIC DEVICE AND METHOD FOR CONTROLLING THE SAME

• US 20160162093A1
• Filed: 12/04/2015
• Published: 06/09/2016
• Est. Priority Date: 12/05/2014
• Status: Abandoned Application

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Kim, Jung-Won, Park, Jae-Hyung
• Application Number:
  US14/959,694
• Publication Number:
  US 20160162093A1
• Time in Patent Office: Days
• 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 2203/04106 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 2203/04107 Shielding in digitiser, i.e. guard or shielding arrangements, mostly for capacitive touchscreens, e.g. driven shields, driven grounds
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/0416 Control or interface arrangements specially adapted for digitisers
• CPC Class Codes: G06F 3/0445 using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer
• CPC Class Codes: G06F 3/0447 Position sensing using the local deformation of sensor cells

Abstract

An electronic device capable of detecting a touch and a pressure is provided. The electronic device includes a display interposed between a transparent protective window and a pressure sensing panel, a touch panel on the transparent protective window and electrically connected to a first control circuit to sense a touch input and identify a location of the touch input, a black sheet directly adhered onto a back surface of the display, an insulating layer laminated to a conductive pattern included in the pressure sensing panel under the black sheet, uniformly disposed across an area of the pressure sensing panel substantially aligned with the view area of the display and electrically connected to a second control circuit, wherein the second control circuit identifies a pressure of the touch input and wherein the location and the pressure of the touch input are provided to a main control circuit as a user input.

Claims

1. An electronic device capable of detecting a touch and a pressure, comprising:

a display interposed between a transparent protective window and a pressure sensing panel;

a touch panel contacted on the transparent protective window and electrically connected to a first control circuit, the touch panel is configured to sense a touch input and the first control circuit identifies a location of the touch input;

a black sheet directly adhered onto a back surface of the display;

an insulating layer configured to be laminated to a conductive pattern; and

the conductive pattern, included in the pressure sensing panel and disposed under the black sheet, uniformly disposed across an area of the pressure sensing panel substantially aligned with the view area of the display and electrically connected to a second control circuit, the second control circuit identifies a pressure of the touch input;

wherein the location of the touch input and the pressure of the touch input are provided to a main control circuit as a user input.

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

a supporting structure disposed under the conductive pattern for supporting the pressure sensing panel.

3. The electronic device of claim 2, wherein the pressure sensing panel further comprises:

a conductive ground plate interposed between the conductive pattern and the supporting structure; and

at least one spacer interposed between the conductive pattern and the conductive ground plate.

4. The electronic device of claim 1, wherein the second control circuit detects a change of a capacitance between the conductive pattern and a conductive ground plate to identify the pressure of the touch input.

5. The electronic device of claim 4, wherein the conductive ground plate has an area substantially aligned with the view area of the display and the area of the pressure sensing panel.

6. An electronic device comprising:

a housing including a first surface facing in a first direction, and a second surface facing in a second direction opposite from the first direction;

a glass plate forming at least a portion of the first surface of the housing;

a display interposed between the glass plate and the second surface of the housing, the display including a first surface including a screen and facing in the first direction, and a second surface facing in the second direction;

a touch panel integrated into the display;

a conductive pattern interposed between the second surface of the display and the second surface of the housing, the conductive pattern is formed substantially parallel to the second surface of the housing, and is spaced apart from the second surface of the display;

a first control circuit electrically connected to the touch panel; and

a second control circuit electrically connected to the conductive pattern,

wherein the first control circuit is configured to detect a touch input for selecting a position on the display, based at least partially on a change in capacitance associated with the touch panel,

wherein the second control circuit is configured to detect pressure of the touch input against the glass plate, based at least partially on a change in capacitance associated with the conductive pattern,

wherein the conductive pattern includes a repeating pattern of polygons across an area between the second surface of the display and the second surface of the housing.

7. The device of claim 6, further comprising:

a black layer interposed between the second surface of the display and the conductive pattern,

wherein the black layer extends substantially parallel to the second surface of the display.

8. The device of claim 7, further comprising:

an insulating substrate interposed between the black layer and the conductive pattern,

wherein the insulating substrate is in contact with at least a portion of the conductive pattern.

9. The device of claim 7, wherein the black layer includes an adhesive material.

10. The device of claim 7, wherein the black layer includes an elastic material.

11. The device of claim 10, wherein the elastic material includes at least one of sponge, silicon or rubber.

12. The device of claim 6, further comprising:

a conductive ground member interposed between the touch panel and the second surface of the housing,

wherein the second control circuit is configured to detect pressure of the touch input, based at least partially on a change in capacitance formed between the conductive pattern and the conductive ground member.

13. The device of claim 12, wherein the conductive ground member has a size substantially the same as a size of the second surface of the display.

14. The device of claim 12, wherein the conductive ground member includes copper.

15. The device of claim 6, further comprising:

a spacer at a periphery of the conductive pattern, wherein the spacer is coupled to at least a portion of the conductive pattern.

16. The device of claim 6, further comprising:

a supporting structure interposed between the conductive pattern and the second surface of the housing,

wherein the supporting structure extends substantially parallel to the conductive pattern.

17. The device of claim 6, further comprising:

a conductive shielding member interposed between the second surface of the display and the conductive pattern,

wherein the conductive shielding member at least partially shields an electrical interference between the display and the conductive pattern.

18. The device of claim 17, wherein the conductive shielding member is positioned to dissipate at least part of heat generated by the display.

19. The device of claim 6, further comprising:

a third control circuit electrically connected to the first control circuit and the second control circuit,

wherein the third control circuit includes an application processor, and a memory,

wherein the memory stores instructions that, when executed, cause the application processor to;

receive first information associated with the detected position of the touch input from the first control circuit;

receive second information associated with the detected pressure of the touch input from the second control circuit; and

perform an action based at least partially on the first information and the second information.

20. The device of claim 6, wherein the touch panel includes indium-tin oxide (ITO).

21. The device of claim 6, wherein at least one of the polygons includes a rectangular shape or a square shape.

22. The device of claim 6, wherein the display includes a liquid crystal display (LCD) or a light emitting diode (LED) display.

23. The device of claim 6, further comprising:

a conductive ground member interposed between the touch panel and the second surface of the housing,

wherein the second control circuit is configured to detect pressure of the touch input, based at least partially on a change in capacitance according to a change in gap between the conductive pattern and the conductive ground member.

25. A method for operating the device of claim 6, the method comprising:

receiving a touch input on the glass plate;

detecting a position of the touch input, using the first control circuit, based at least partially on a change in capacitance associated with the touch panel;

detecting pressure of the touch input against the glass plate, using the second control circuit, based at least partially on a change in capacitance associated with the conductive pattern; and

performing an action based at least partially on the detected position of the touch input and the detected pressure of the touch input.

24. An electronic device comprising:

a housing including a first surface facing in a first direction, and a second surface facing in a second direction opposite from the first direction;

a window member forming at least a portion of the first surface of the housing; and

a display panel disposed between the window member and the second surface of the housing, the display panel includes a first surface including a screen and facing in the first direction, and a second surface facing in the second direction;

a touch panel integrated into the display panel;

a conductive pattern disposed between the second surface of the display panel and the second surface of the housing, the conductive pattern is formed substantially parallel to the second surface of the housing, and is spaced apart from the second surface of the display panel;

a first touch control module electrically connected to the touch panel; and

a second touch control module electrically connected to the conductive pattern,

wherein the first touch control module is configured to detect a position of a touch input on the glass plate, based at least partially on a change in capacitance associated with the touch panel,

wherein the second touch control module is configured to detect pressure of the touch input against the glass plate, based at least partially on a change in capacitance associated with the conductive pattern,

wherein the conductive pattern includes a repeating pattern of polygons across a planar area between the second surface of the display panel and the second surface of the housing.