IP Library Granted Patent US 10,133,377
Granted Patent B2
US 10,133,377 · App. 14/745,514 · Granted Nov 20, 2018

Smartphone

Inventors: Seyeob Kim (Gyeonggi-do, KR); Sangsic Yoon (Gyeonggi-do, KR); Hojun Moon (Gyeonggi-do, KR); Taehoon Kim (Gyeonggi-do, KR)
Assignee: HIDEEP INC.
G06F3/0412G06F3/044G06F3/045G06F3/0414G06F3/0416G06F2203/04101G06F2203/04103G06F2203/04104G06F2203/04105G06F2203/04107G06F2203/04111
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Quick Facts
Patent No.
US 10,133,377
App. No.
14/745,514
Granted
Nov 20, 2018
Kind
B2
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 (61)

1. A smartphone comprising:

a cover layer;

a display module which is located under the cover layer and comprises an LCD panel comprising a liquid crystal layer, and a first glass layer and a second glass layer between which the liquid crystal layer is placed, and comprises a component configured to cause the LCD panel to perform a display function, wherein a touch pressure bends the display module;

a pressure electrode which comprises a plurality of electrodes formed on a same layer as a sheet and is located under the display module, wherein the plurality of electrodes overlap an image displaying area of the LCD panel in a vertical direction; and

a shielding member for separating a circuit board or a battery from the display module, the shielding member located under the pressure electrode,

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,

wherein the touch sensor comprises a plurality of drive electrodes and a plurality of receiving electrodes,

wherein a drive signal is applied to the touch sensor and a touch position is detected by a sensing signal which is outputted from the touch sensor,

wherein a magnitude of the touch pressure is detected based on a change amount of capacitance outputted from the pressure electrode and the capacitance comprises a self-capacitance of each of the plurality of electrodes with respect to a reference potential layer, wherein the reference potential layer overlaps the image displaying area of the LCD panel in a vertical direction,

wherein the change amount of the capacitance outputted from the pressure electrode changes as the display module bends,

wherein the change amount of the capacitance is changed according to a distance between the pressure electrode and the reference potential layer,

wherein the plurality of electrodes are attached to one of a surface of the display module facing the shielding member and a surface of the shielding member facing the display module, the plurality of electrodes being spaced apart from the other of the surface of the display module facing the shielding member and the surface of the shielding member facing the display module,

wherein the display module is the reference potential layer, and

wherein a distance between the display module and the shielding member is maintained by a support structure located only in an edge portion of the shielding member, the edge portion not having the pressure electrode formed thereon.

2. The smartphone of claim 1 , wherein the at least a portion of the touch sensor located between the first glass layer and the second glass layer is at least one of the drive electrode and the receiving electrode.

3. The smartphone of claim 1 ,

wherein the LCD panel further comprises a first polarizer layer and a second polarizer layer between which the first glass layer, the liquid crystal layer and the second glass layer are placed,

and wherein the remaining portion other than the at least a portion of the touch sensor is located between the first glass layer and the first polarizer layer.

4. The smartphone of claim 1 , further comprising a spacer layer which is located between the pressure electrode and the shielding member.

5. The smartphone of claim 1 , further comprising a spacer layer which is located between the pressure electrode and the display module.

6. The smartphone of claim 1 , wherein the plurality of electrodes constitute a plurality of channels.

7. The smartphone of claim 1 , further comprising a spacer layer having a thickness defined by an inelastic material, wherein the pressure electrode is located within the spacer layer.

8. A smartphone comprising:

a cover layer;

a display module which is located under the cover layer and comprises an LCD panel comprising a liquid crystal layer, and a first glass layer and a second glass layer between which the liquid crystal layer is placed, and comprises a component configured to cause the LCD panel to perform a display function, wherein a touch pressure bends the display module;

a pressure electrode which comprises a plurality of electrodes formed on a same layer as a sheet and is located under the display module, wherein the plurality of electrodes overlap an image displaying area of the LCD panel in a vertical direction; and

a shielding member for separating a circuit board or a battery from the display module, the shielding member located under the pressure electrode,

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,

wherein the touch sensor comprises a plurality of drive electrodes and a plurality of receiving electrodes,

and further comprising:

a drive unit which applies a drive signal to the touch sensor;

a sensing unit which receives a sensing signal from the touch sensor and detects a touch position; and

a pressure detector which detects a magnitude of the touch pressure based on a change amount of capacitance outputted from the pressure electrode and the capacitance comprises a self-capacitance of each of the plurality of electrodes with respect to a reference potential layer, wherein the change amount of the capacitance outputted from the pressure electrode changes as the display module bends,

wherein the reference potential layer overlaps the image displaying area of the LCD panel in a vertical direction,

wherein the change amount of the capacitance is changed according to a distance between the pressure electrode and the reference potential layer,

wherein the plurality of electrodes are attached to one of a surface of the display module facing the shielding member and a surface of the shielding member facing the display module, the plurality of electrodes being spaced apart from the other of the surface of the display module facing the shielding member and the surface of the shielding member facing the display module,

wherein the display module is the reference potential layer, and

wherein a distance between the display module and the shielding member is maintained by a support structure located only in an edge portion of the shielding member, the edge portion not having the pressure electrode formed thereon.

9. The smartphone of claim 8 , wherein the at least a portion of the touch sensor located between the first glass layer and the second glass layer is at least one of the drive electrode and the receiving electrode.

10. The smartphone of claim 8 ,

wherein the LCD panel further comprises a first polarizer layer and a second polarizer layer between which the first glass layer, the liquid crystal layer and the second glass layer are placed,

and wherein the remaining portion other than the at least a portion of the touch sensor is located between the first glass layer and the first polarizer layer.

11. The smartphone of claim 8 , further comprising a spacer layer which is located between the pressure electrode and the shielding member.

12. The smartphone of claim 8 , further comprising a spacer layer which is located between the pressure electrode and the display module.

13. The smartphone of claim 8 , wherein the plurality of electrodes constitute a plurality of channels.

14. The smartphone of claim 8 , further comprising a spacer layer having a thickness defined by an inelastic material, wherein the pressure electrode is located within the spacer layer.

15. A smartphone comprising:

a cover layer;

a display module located under the cover layer and comprising an LCD panel comprising a liquid crystal layer, and a first glass layer and a second glass layer between which the liquid crystal layer is located, the display module further comprising a component configured to cause the LCD panel to perform a display function, wherein a touch pressure bends 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; and

a pressure electrode comprising a plurality of electrodes formed on the shielding member as a sheet, the pressure electrode located between the display module and the shielding member, wherein the plurality of electrodes are overlapped with an image displaying area of the LCD panel in a vertical direction, wherein the plurality of electrodes being spaced apart from a surface of the display module facing the shielding member,

wherein at least a first portion of a touch sensor which senses touch in a capacitive manner is located between the first glass layer and the second glass layer,

wherein the touch sensor comprises a plurality of drive electrodes and a plurality of receiving electrodes,

wherein a drive signal is applied to the touch sensor and a touch position is detected by a sensing signal which is outputted from the touch sensor,

wherein a magnitude of the touch pressure is detected based on a change amount of capacitance outputted from the pressure electrode,

wherein the change amount of the capacitance outputted from the pressure electrode changes as the display module bends; and

wherein a distance between the display module and the shielding member is maintained by a support structure located only in an edge portion of the shielding member, the edge portion not having the pressure electrode formed thereon.

16. The smartphone of claim 15 , wherein the at least a portion of the touch sensor located between the first glass layer and the second glass layer is at least one of the drive electrode and the receiving electrode.

17. The smartphone of claim 15 , wherein the LCD panel further comprises a first polarizer layer and a second polarizer layer between which the first glass layer, the liquid crystal layer and the second glass layer are located, and

wherein a remaining portion of the touch sensor, other than the first portion of the touch sensor, is located between the first glass layer and the first polarizer layer.

18. The smartphone of claim 15 , wherein the plurality of electrodes constitute a plurality of channels.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 22, 2015
From: KIM, SEYEOB; YOON, SANGSIC; MOON, HOJUN; KIM, TAEHOON
To: HIDEEP INC.
Reel/Frame 035873/0802 →
Priority Claims (1)
KR 10-2014-0098917 · Aug 1, 2014 · national
Continuity (1)
Related Publication 20160035290A1 · Feb 4, 2016
Cited By (1)
US 12,523,552