HAND-HELD ELECTRONIC DEVICE, TOUCH-SENSING COVER AND INITIATION METHOD WITH FUNCTION OF MULTI-TOUCH

• US 20160026323A1
• Filed: 05/12/2015
• Published: 01/28/2016
• Est. Priority Date: 07/25/2014
• Status: Abandoned Application

• Current Assignee: HannStar Display Corporation
• Original Assignee: HannStar Display Corporation
• Inventors: WU, Hsu-Ho, LU, Tien-Rong
• Application Number:
  US14/710,055
• Publication Number:
  US 20160026323A1
• Time in Patent Office: Days
• US Class Current: 1/1
• 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 2203/04112 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 3/0416 Control or interface arrangements specially adapted for digitisers
• CPC Class Codes: G06F 3/0443 using a single layer of sensing electrodes
• 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 3/0446 using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
• CPC Class Codes: G06F 3/0448 Details of the electrode shape, e.g. for enhancing the detection of touches, for generating specific electric field shapes, for enhancing display quality
• CPC Class Codes: G09G 2300/0426 Layout of electrodes and connections
• CPC Class Codes: G09G 5/003 Details of a display terminal, the details relating to the control arrangement of the display terminal and to the interfaces thereto specific for a CRT G09G1/165; for a flat panel G09G3/2092

Abstract

A touch-sensing cover for hand-held electronic device includes a cover and a touch-sensing structure. The cover is disposed on the other side of the hand-held electronic device opposite to the panel. The touch-sensing structure with its partial or full area is disposed on the cover and has a plurality of detective points to receive a trigger event triggering part of the detective points. The touch-sensing structure includes a first sensing layer having a plurality of first sensing lines. The first sensing lines include the detective points and are coupled to a capacitance detection unit. While the trigger event conforms with an initiative determination condition stored in the hand-held electronic device, the capacitance detection unit detects or starts to detect a plurality of the touch events occurring simultaneously at distinct positions on the cover, and generates a plurality of signals representing the positions where the respective touch events occur.

Claims

1. A touch-sensing cover for a hand-held electronic device having the touch-sensing cover, a panel and a control unit, comprising:

a cover, disposed on the other side of the hand-held electronic device opposite to the panel; and

a touch-sensing structure, with its partial or full area disposed on the cover and having a plurality of detective points to receive a trigger event triggering part of the detective points, wherein the touch-sensing structure comprising;

a first sensing layer, having a plurality of first sensing lines, wherein the first sensing lines comprise the detective points and are coupled to a capacitance detection unit,

wherein while the trigger event conforms with an initiative determination condition stored in the hand-held electronic device, the capacitance detection unit detects a plurality of the touch events occurring simultaneously at distinct positions on the cover, and generates a plurality of signals representing the positions where the respective touch events occur.

2. The touch-sensing cover of claim 1, wherein the touch-sensing structure further comprises a second sensing layer disposed separately from the first sensing layer in space, the second sensing layer has a plurality of second sensing lines, and the first sensing lines and the second sensing lines are respectively interlaced to form the detective points.

3. The touch-sensing cover of claim 2, wherein the first sensing layer further comprises a first substrate, the first sensing lines are disposed on the first substrate, the second sensing layer further comprises a second substrate, and the second sensing lines are disposed on the second substrate.

4. The touch-sensing cover of claim 2, wherein the first sensing lines are disposed on the cover, and there is an insulation layer between the first sensing layer and the second sensing layer.

5. The touch-sensing cover of claim 1, wherein the touch-sensing structure comprises a metal mash, a metal nanowire, a conductive film, a carbon nanotube and graphene.

6. A hand-held electronic device, comprising:

a panel;

a control unit, electrically connected to the panel; and

a touch-sensing cover, electrically connected to the control unit, comprising;

a cover, disposed on the other side of the hand-held electronic device opposite to the panel; and

a touch-sensing structure, with its partial or full area disposed on the cover and having a plurality of detective points to receive a trigger event triggering part of the detective points, wherein the touch-sensing structure comprising;

a first sensing layer, having a plurality of first sensing lines, wherein the first sensing lines comprise the detective points and are coupled to a capacitance detection unit,

wherein while the trigger event conforms with an initiative determination condition stored in the hand-held electronic device, the capacitance detection unit detects a plurality of the touch events occurring simultaneously at distinct positions on the cover, and generates a plurality of signals representing the positions where the respective touch events occur.

7. The hand-held electronic device of claim 6, wherein the control unit computes the trigger quantity distribution, trigger time, trigger frequency, trigger morphology or trigger location of the part of the detective points triggered by the trigger event to generate a computational result.

8. The hand-held electronic device of claim 7, wherein the control unit determines whether the trigger quantity distribution, trigger time, trigger frequency, trigger morphology or trigger location conforms with the initiative determination condition according to the computational result.

9. The hand-held electronic device of claim 6, wherein the touch-sensing structure further comprises a second sensing layer disposed separately from the first sensing layer in space, the second sensing layer has a plurality of second sensing lines, and the first sensing lines and the second sensing lines are respectively interlaced to form the detective points.

10. The hand-held electronic device of claim 9, wherein the first sensing layer further comprises a first substrate, the first sensing lines are disposed on the first substrate, the second sensing layer further comprises a second substrate, and the second sensing lines are disposed on the second substrate.

11. The hand-held electronic device of claim 6, wherein the touch-sensing structure comprises a metal mash, a metal nanowire, a conductive film, a carbon nanotube and graphene.

12. The hand-held electronic device of claim 6, wherein a user operates the hand-held electronic device by one hand, and the touch-sensing cover faces a light source or the back of the panel faces the light source.

13. The hand-held electronic device of claim 6, wherein the wires connected to the touch-sensing structure are concentrated in an outlet of one side.

14. The hand-held electronic device of claim 6, wherein the width of the touch-sensing structure is slightly narrower about 5% to 10% than the width of the touch-sensing cover.

15. The hand-held electronic device of claim 6, wherein the area of the touch-sensing structure has a ratio relationship to the area of the panel, and the control unit changes an input position of the touch-sensing structure to a display position of the panel according to the ratio relationship.

16. The hand-held electronic device of claim 6, wherein the first sensing layer or the second sensing layer is capable of wireless power transmission.

17. The hand-held electronic device of claim 6, wherein the touch-sensing cover further comprises a near field communication unit, the near field communication unit has a near field communication chip and an antenna, the near field communication chip is electrically connected to the control unit, and the antenna is disposed on the cover or the touch-sensing structure.

18. A method for initiating multi-touch function, adapted for a hand-held electronic device comprising a panel, a touch-sensing cover and a control unit, wherein the touch-sensing cover has a cover and a touch-sensing structure, the touch-sensing structure has a plurality of detective points and is coupled to a capacitance detection unit, the method executed on the hand-held electronic device comprises:

receiving a trigger event by the touch-sensing structure, wherein the trigger event triggers part of the detective points of the touch-sensing structure;

determining whether the trigger event conforms with the initiative determination condition stored in the hand-held electronic device by the control unit; and

while the trigger event conforms with the initiative determination condition, detecting a plurality of the touch events occurring simultaneously at distinct positions on the cover and generating a plurality of signals representing the positions where the respective touch events occur by the capacitance detection unit.

19. The method of claim 18, further comprising:

utilizing the control unit to compute the trigger quantity distribution, trigger time, trigger frequency, trigger morphology or trigger location of the part of the detective points triggered by the trigger event to generate a computational result.

20. The method of claim 19, wherein the control unit determines whether the trigger quantity distribution, trigger time, trigger frequency, trigger morphology or trigger location conforms with the initiative determination condition according to the computational result.