Smartphone

• US 10,007,371 B2
• Filed: 01/27/2016
• Issued: 06/26/2018
• Est. Priority Date: 08/01/2014
• Status: Active Grant

• Current Assignee: HiDeep Inc.
• Original Assignee: HiDeep Inc.
• Inventors: Kim, Seyeob, Yoon, Sangsic, Moon, Hojun, Kim, Taehoon
• Primary Examiner(s): Zhou, Hong
• Application Number:
  US15/007,240
• Publication Number:
  US 20160162088A1
• Time in Patent Office: 881 Days
• Field of Search: 345169, 345173-174
• 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 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 3/0446 using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
• CPC Class Codes: G06F 3/045 using resistive elements, e.g. a single continuous surface or two parallel surfaces put in contact

Abstract

A smartphone includes: a cover layer; a display module, and comprises a component configured to cause the LCD panel to perform a display function; a pressure electrode which is located under the display module; and a shielding member which is located under the pressure electrode. At least a portion of a touch sensor which senses touch in a capacitive manner is located in the display module.

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 formed as a sheet, wherein the pressure sensor is attached under the display module;

a shielding member for separating a circuit board or a battery from the display module, the shielding member located under the display module and spaced apart from the display module by a supporting structure located only in an edge portion of the shielding member, the edge portion not having the pressure electrode formed thereon; 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 the shielding member is a reference potential layer;

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, and wherein the capacitance 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, 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.

5. The smartphone of claim 4, wherein the plurality of drive electrodes and the plurality of receiving electrodes are located between the polarizer layer and the first glass layer.

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

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

8. A smartphone comprising:

a cover layer;

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

a shielding member which is located under the display module and is spaced apart from the display module by a supporting structure located only in an edge portion of the shielding member;

a pressure sensor comprising a pressure electrode formed as a sheet, wherein the pressure sensor is attached on the shielding member, and wherein the edge portion of the shielding member does not have the pressure electrode formed thereon; 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 the display module is a reference potential layer;

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

9. The smartphone of claim 8, 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.

10. The smartphone of claim 9, wherein the plurality of drive electrodes and the plurality of receiving electrodes are located between the polarizer layer and the first glass layer.

11. The smartphone of claim 8, wherein, when the pressure sensor is attached on the shielding member, the pressure sensor further comprises an insulation layer located between the shielding member and the pressure electrode.

12. The smartphone of claim 8, wherein, when the pressure sensor is attached on the shielding member, the pressure electrode contacts and is attached to the top of the shielding member.

13. The smartphone of claim 8, wherein the pressure electrode comprises a plurality of electrodes constituting a plurality of channels.

14. The smartphone of claim 8, wherein the cover layer is made of glass.