TOUCH WITH FEEDBACK SYSTEM

• US 20120062516A1
• Filed: 11/16/2011
• Published: 03/15/2012
• Est. Priority Date: 06/04/2009
• Status: Abandoned Application

• Current Assignee: Inferpoint Systems Limited
• Original Assignee: Inferpoint Systems Limited
• Inventors: CHEN, Qiliang, CHEN, Meiying
• Application Number:
  US13/297,286
• Publication Number:
  US 20120062516A1
• Time in Patent Office: Days
• US Class Current: 345/174
• CPC Class Codes: G06F 2203/014 Force feedback applied to GUI
• CPC Class Codes: G06F 3/016 Input arrangements with force or tactile feedback as computer generated output to the user
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• 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 3/045 using resistive elements, e.g. a single continuous surface or two parallel surfaces put in contact

Abstract

A touch control screen used in integration with a display panel and a touch with feedback system is provided. When an operator operates the touch with feedback system, sensing lines and a touch control unit detect a position touched by the operator, a touch feedback driving unit applies a specific electrical signal to touch feedback electrodes to transfer the electrical signal to a finger tip of the operator according to the touched position, so the operator acquires touch information. A display is overlaid on the touch control screen, a control circuit enables the touch feedback driving unit to apply different electrical signals on the touch feedback electrodes according to positions touched by the operator, different display elements, and different statuses of the display elements on a display picture, so the operator acquires the touch information such as a sense of a shape and texture of the display element.

Claims

1. A touch with feedback system, formed of a substrate, sensing lines, a touch control unit, touch feedback electrodes, and a touch feedback driving unit, wherein the sensing lines and the touch control unit are used for detecting a position of a finger of an operator on the substrate, the touch feedback electrodes and the touch feedback driving unit are used for providing touch information for the detected finger of the operator,

the touch feedback electrodes are disposed at a surface of the substrate at a side facing a user disposed with the sensing lines used for detecting a touch control position, the sensing lines are connected to the touch control unit, and the touch feedback electrodes are connected to the touch feedback driving unit to transmit a touch feedback signal.

2. The touch with feedback system according to claim 1, wherein

an active device array is provided on the substrate disposed with the touch feedback electrodes, two touch feedback electrode wire groups are connected to two terminals of each active device in the active device array respectively, and the other terminal of the active device is then connected to the touch feedback emission electrodes.

3. The touch with feedback system according to claim 2, wherein

the active device array is a thin-film transistor (TFT) array, and the two touch feedback electrode wire groups are connected to a grid and a source of a TFT respectively, a drain of the TFT is connected to a touch feedback emission electrode group, and the two touch feedback electrode wire groups and the touch feedback emission electrode group are isolated by insulating layers.

4. The touch with feedback system according to claim 1, wherein

the sensing lines and the touch feedback electrodes are disposed on different substrates.

5. The touch with feedback system according to claim 1, wherein

the sensing lines and the touch feedback electrodes are disposed on different surfaces of the same substrate, or disposed on a same surface of the same substrate.

6. The touch with feedback system according to claim 1, wherein

the touch feedback electrodes and the sensing lines time division multiplex the same electrode.

7. The touch with feedback system according to claim 1, wherein

the touch feedback electrode is a planar electrode, a mesh electrode, a block electrode or a wire electrode.

8. The touch with feedback system according to claim 1, wherein

an insulating protection layer is disposed on a surface of the touch feedback electrodes.

9. A touch with feedback system, formed of a substrate, sensing lines, a touch control unit, touch feedback electrodes, a touch feedback driving unit, and a control circuit, wherein the sensing lines and the touch control unit are used for detecting a position of a finger of an operator on the substrate, the touch feedback electrodes and the touch feedback driving unit are used for providing touch information for the detected finger of the operator,

the touch feedback electrodes are disposed at a surface of the substrate at a side facing a user disposed with the sensing lines used for detecting a touch control position, the sensing lines are connected to the touch control unit, the touch feedback electrodes are connected to the touch feedback driving unit, both the touch control unit and the touch feedback driving unit are connected to the control circuit, and the control circuit enables the touch feedback driving unit to apply different electrical signals on the touch feedback electrodes according to different positions of a touch control screen touched by the operator.

11. The touch with feedback system according to claim 9, wherein

different electrical signals applied on the touch feedback electrodes by the touch feedback driving unit represent that at least one of a signal frequency, strength, and discontinuity is different.

15. The touch with feedback system according to claim 9, wherein

a loop is formed for the touch feedback signal of the touch with feedback system, when one or more touch feedback electrodes are in communication with an output terminal of a touch excitation source and a touch feedback signal is being applied on the touch feedback electrodes, the other one or more touch feedback electrodes are in communication with the other output terminals of the touch excitation source or in communication with another touch excitation source, so as to provide a current return-loop path for the touch feedback signal, and two or more touch feedback electrodes connected to different output terminals of the touch feedback signal, a touch feedback object, and a coupling capacitance between the touch feedback object and the touch feedback electrodes form a touch feedback loop.

18. The touch with feedback system according to claim 15, wherein

the touch feedback electrodes for providing the current return-loop path for the touch feedback signal not staggered with the touch feedback electrodes for applying the touch feedback signal are electrodes at one side or two sides adjacent to the touch feedback electrodes for applying the touch feedback signal.

10. A touch with feedback system, formed of a display panel, a display driving unit, sensing lines, a touch control unit, touch feedback electrodes, a touch feedback driving unit, and a control circuit, wherein the display panel is used for displaying information, the sensing lines and the touch control unit are used for detecting a position of a finger of an operator on the substrate, the touch feedback electrodes and the touch feedback driving unit are used for providing touch information for the detected finger of the operator,

the touch feedback electrodes are disposed on a surface of the substrate at a side facing a user of the display panel, the display panel is connected to the display driving unit, the sensing lines are connected to the touch control unit, the touch feedback electrodes are connected to the touch feedback driving unit, all the display driving unit, the touch control unit, and the touch feedback driving unit are connected to the control circuit, and the control circuit enables the touch feedback driving unit to apply different electrical signals on the touch feedback electrodes according to positions touched by the operator, different display elements, and different statuses of the display elements on a display picture.

12. The touch with feedback system according to claim 10, wherein

different electrical signals applied on the touch feedback electrodes by the touch feedback driving unit represent that at least one of a signal frequency, strength, and discontinuity is different.

13. The touch with feedback system according to claim 10, wherein

the display element is an operable display element selected from a push button, a dial button, a slide button, a rotation button, or also a non-operable display element.

14. The touch with feedback system according to claim 10, wherein

electrical signals applied on the touch feedback electrodes by the touch feedback driving unit are different according to different position touched by the finger of the operator inside the display element on the display picture.

16. The touch with feedback system according to claim 10, wherein

a loop is formed for the touch feedback signal of the touch with feedback system, when one or more touch feedback electrodes are in communication with an output terminal of a touch excitation source and a touch feedback signal is being applied on the touch feedback electrodes, the other one or more touch feedback electrodes are in communication with the other output terminals of the touch excitation source or in communication with another touch excitation source, so as to provide a current return-loop path for the touch feedback signal, and two or more touch feedback electrodes connected to different output terminals of the touch feedback signal, a touch feedback object, and a coupling capacitance between the touch feedback object and the touch feedback electrodes form a touch feedback loop.

17. The touch with feedback system according to claim 14, wherein

the touch feedback electrodes for providing the current return-loop path for the touch feedback signal in the touch with feedback system are disposed on a surface of a substrate in the touch with feedback system, and are a part of or all of touch feedback electrodes not staggered or staggered with the touch feedback electrodes for applying the touch feedback signal on the substrate surface;

or are disposed on an outer case of the touch with feedback system.