Smartphone

• US 9,658,712 B2
• Filed: 01/27/2016
• Issued: 05/23/2017
• Est. Priority Date: 09/19/2014
• Status: Active Grant

• Current Assignee: HiDeep Inc.
• Original Assignee: HiDeep Inc.
• Inventors: Moon, Hojun, Kim, Taehoon, Kim, Seyeob, Yoon, Sangsic, Kwon, Sunyoung
• Primary Examiner(s): PATEL, PREMAL R
• Application Number:
  US15/007,245
• Publication Number:
  US 20160162089A1
• Time in Patent Office: 482 Days
• 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 1/1637 Details related to the display arrangement, including those related to the mounting of the display in the housing
• 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 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 2203/04104 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 2203/04105 Pressure sensors for measuring the pressure or force exerted on the touch surface without providing the touch position
• 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 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 2203/04112 Electrode mesh in capacitive digitiser: electrode for touch sensing is formed of a mesh of very fine, normally metallic, interconnected lines that are almost invisible to see. This provides a quite large but transparent electrode surface, without need for ITO or similar transparent conductive material
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• 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: G09G 2300/023 Display panel composed of stacked panels
• CPC Class Codes: G09G 3/36 using liquid crystals
• CPC Class Codes: H04M 2250/22 including a touch pad, a touch sensor or a touch detector digitizers for touch screens G06F3/041

Abstract

A smartphone includes a cover layer; an LCD panel which is located under the cover layer and includes a liquid crystal layer, and a first glass layer and a second glass layer between which the liquid crystal layer is placed, wherein at least a portion of a touch sensor which senses touch in a capacitive manner is located between the first glass layer and the second glass layer; a backlight unit which is located under the LCD panel; a pressure electrode which is located under the backlight unit; and a shielding member which is located under the pressure electrode.

Claims

1. A smartphone comprising:

a cover layer;

an organic light emitting display module which is located under the cover layer;

a pressure sensor comprising a pressure electrode which is attached under the display module;

a reference potential layer which is positioned within the display module; and

a plurality of drive electrodes to which a driving signal is applied and a plurality of receiving electrodes outputting a sensing signal used to detect a touch position;

wherein a magnitude of a touch pressure is detected based on a capacitance which is detected from the pressure electrode and is changed according to a distance between the pressure electrode and the reference potential layer; and

wherein the display module is bent by the touch pressure, and wherein the capacitance which is detected from the pressure electrode changes as the display module bends.

2. The smartphone of claim 1, wherein, when the pressure sensor is attached under the display module, the pressure sensor further comprises an insulation layer located between the display module and the pressure electrode.

3. The smartphone of claim 1, wherein, when the pressure sensor is attached under the display module, the pressure electrode contacts and is attached to the bottom of the display module.

4. The smartphone of claim 1, further comprising a substrate which is spaced apart from the pressure sensor such that a spacer layer is disposed between the substrate and the pressure sensor.

5. The smartphone of claim 1, wherein the display module comprises a polarizer layer, a first glass layer, and a second glass layer, which are disposed in the order listed, and comprises an organic light emitting material between the first glass layer and the second glass layer.

6. The smartphone of claim 5, wherein the plurality of drive electrodes and the plurality of receiving electrodes are located between the polarizer layer and the first glass layer.

7. The smartphone of claim 6, wherein, when the pressure sensor is attached under the display module, the pressure sensor further comprises an insulation layer located between the display module and the pressure electrode.

8. The smartphone of claim 6, wherein, when the pressure sensor is attached under the display module, the pressure electrode contacts and is attached to the bottom of the display module.

9. The smartphone of claim 1, wherein the cover layer is made of glass.

10. The smartphone of claim 1, wherein the pressure sensor comprises a plurality of pressure electrodes constituting a plurality of channels.

11. A smartphone comprising:

a cover layer;

an organic light emitting display module which is located under the cover layer;

a substrate which is spaced apart from the display module such that a spacer layer is disposed between the substrate and the display module;

a pressure sensor comprising a pressure electrode which is attached on the substrate; and

a plurality of drive electrodes to which a driving signal is applied and a plurality of receiving electrodes outputting a sensing signal used to detect a touch position;

wherein a magnitude of a touch pressure is detected based on a capacitance which is detected from the pressure electrode and is changed according to a distance between the pressure electrode and a reference potential layer positioned within the display module; and

wherein the display module is bent by the touch pressure, and wherein the capacitance which is detected from the pressure electrode changes as the display module bends.

12. The smartphone of claim 11, wherein, when the pressure sensor is attached on the substrate, the pressure sensor further comprises an insulation layer located between the substrate and the pressure electrode.

13. The smartphone of claim 11, wherein, when the pressure sensor is attached on the substrate, the pressure electrode contacts and is attached on the substrate.

14. The smartphone of claim 11, wherein the display module comprises a polarizer layer, a first glass layer, and a second glass layer, which are disposed in the order listed, and comprises an organic light emitting material between the first glass layer and the second glass layer.

15. The smartphone of claim 14, wherein the plurality of drive electrodes and the plurality of receiving electrodes are located between the polarizer layer and the first glass layer.

16. The smartphone of claim 15, wherein, when the pressure sensor is attached on the substrate, the pressure sensor further comprises an insulation layer located between the substrate and the pressure electrode.

17. The smartphone of claim 15, wherein, when the pressure sensor is attached on the substrate, the pressure electrode contacts and is attached on the substrate.

18. The smartphone of claim 11, wherein the cover layer is made of glass.

19. The smartphone of claim 11, wherein the pressure sensor comprises a plurality of pressure electrodes constituting a plurality of channels.

20. A smartphone comprising:

a cover layer;

a display module under the cover layer, the display module configured to bend in response to a touch pressure;

a pressure electrode under the display module;

a reference potential layer within the display module;

a plurality of drive electrodes configured to receive a driving signal; and

a plurality of receiving electrodes configured to output a sensing signal for detecting a touch position;

wherein the bending of the display module by the touch pressure causes a change in distance between the pressure electrode and the reference potential layer, thereby causing a change in a capacitance detected from the pressure electrode; and

wherein a magnitude of the touch pressure is determined based on the capacitance detected from the pressure electrode.