Smartphone

• US 9,535,529 B2
• Filed: 01/11/2016
• Issued: 01/03/2017
• Est. Priority Date: 09/19/2014
• Status: Active Grant

• Current Assignee: HiDeep Inc.
• Original Assignee: HiDeep Inc.
• Inventors: Kim, Seyeob, Yoon, Sangsic, Kwon, Sunyoung, Moon, Hojun, Kim, Taehoon
• Primary Examiner(s): PATEL, PREMAL R
• Application Number:
  US14/992,668
• Publication Number:
  US 20160117024A1
• Time in Patent Office: 358 Days
• US Class Current: 1/1
• 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

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. An electrode sheet comprising:

a first insulation layer and a second insulation layer; and

a first electrode and a second electrode which are located between the first insulation layer and the second insulation layer, wherein the first electrode and the second electrode are placed on the first insulation layer and the second insulation layer is placed on the first electrode and the second electrode;

wherein a capacitance between the first electrode and the second electrode is detected, which is changed according to a relative distance change between the electrode sheet and a reference potential layer spaced apart from the electrode sheet and located within a display module;

wherein a magnitude of a pressure which causes the distance change is detected according to the change of the capacitance;

wherein the electrode sheet is attached to a touch input device comprising a substrate and the display module in such a manner as to be attached to any one of a surface of the substrate that faces the display module, and a surface of the display module that faces the substrate;

wherein the electrode sheet is spaced apart from the display module or the substrate; and

wherein when the pressure is applied, the display module is bent and the relative distance change between the electrode sheet and the reference potential layer is caused.

2. The electrode sheet of claim 1, wherein the first electrode or the second electrode constitute a plurality of channels.

3. The electrode sheet of claim 2, wherein the electrode sheet is able to detect a pressure of each of multi touch by using the plurality of channels.

4. An electrode sheet comprising:

a first insulation layer and a second insulation layer; and

an electrode which is located between the first insulation layer and the second insulation layer, wherein the electrode is placed on the first insulation layer and the second insulation layer is placed on the electrode;

wherein a capacitance between the electrode and a reference potential layer is detected, which is changed according to a relative distance change between the electrode sheet and the reference potential layer spaced apart from the electrode sheet and located within a display module;

and wherein a magnitude of a pressure which causes the distance change is detected according to the change of the capacitance;

wherein the electrode sheet is attached to a touch input device comprising a substrate and the display module in such a manner as to be attached to any one of a surface of the substrate that faces the display module, and a surface of the display module that faces the substrate;

wherein the electrode sheet is spaced apart from the display module or the substrate; and

wherein when the pressure is applied, the display module is bent and the relative distance change between the electrode sheet and the reference potential layer is caused.

5. The electrode sheet of claim 4, wherein the electrode constitutes a plurality of channels.

6. The electrode sheet of claim 5, wherein the electrode sheet is able to detect a pressure of each of multi touch by using the plurality of channels.

7. An electrode sheet comprising:

a first insulation layer and a second insulation layer; and

a first electrode and a second electrode located between the first insulation layer and the second insulation layer, the first electrode and the second electrode being located on the first insulation layer, and the second insulation layer being located on the first electrode and the second electrode;

wherein a capacitance between the first electrode and the second electrode is detected, the capacitance being changed by a relative distance change between the electrode sheet and a reference potential layer spaced apart from the electrode sheet and located within a display module;

wherein a magnitude of a pressure causing the distance change is detected based on the change of the capacitance;

wherein the electrode sheet is attached to a touch input device comprising a substrate and the display module such that the electrode sheet is configured to be attached to (a) a surface of the substrate that faces the display module, or (b) a surface of the display module that faces the substrate;

wherein the electrode sheet is configured to be spaced apart from the display module or the substrate; and

wherein when the pressure is applied, the display module is bent and the relative distance change between the electrode sheet and the reference potential layer is caused.