INDUCTIVE TOUCH-CONTROL DISPLAY SUBSTRATE, INDUCTIVE TOUCH-CONTROL SCREEN AND TOUCH-CONTROL DISPLAY DEVICE

• US 20150185048A1
• Filed: 06/09/2014
• Published: 07/02/2015
• Est. Priority Date: 12/30/2013
• Status: Active Grant

• Current Assignee: Shanghai Tianma Micro-Electronics Company Limited (Tianma Microelectronics Company Limited), Tianma Microelectronics Company Limited
• Original Assignee: Shanghai Tianma Micro-Electronics Company Limited (Tianma Microelectronics Company Limited), Tianma Microelectronics Company Limited
• Inventors: Liu, Baoling, Yao, Qijun, Lu, Feng
• Granted Patent: US 9,759,579 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G01D 5/20 by varying inductance, e.g. by a movable armature
• CPC Class Codes: G01D 5/2006 by influencing the self-induction of one or more coils G01D5/22 takes precedence
• CPC Class Codes: G02F 1/13338 Input devices, e.g. touch panels
• CPC Class Codes: G06F 3/041 Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/046 by electromagnetic means

Abstract

The invention discloses an in-cell inductive touch-control display substrate, an inductive touch-control screen and a touch-control display device. The in-cell inductive touch-control display substrate includes: a first electrode layer; a second electrode layer insulated from the first electrode layer to form an electric field; first electromagnetic inductive coils extending in the row direction and forming loops and second electromagnetic inductive coils extending in the column direction and forming loops, disposed in the same layer as the first electrode layer. The first electromagnetic inductive coils or the second electromagnetic inductive coils are broken into a plurality of electromagnetic inductive segments at the crossings of the first and second electromagnetic inductive coils. Bridge wires disposed in the same layer as the second electrode layer electrically connect the electromagnetic inductive segments of the first electromagnetic inductive coils or the second electromagnetic inductive coils.

Claims

1. An in-cell inductive touch-control display substrate, comprising:

a first electrode layer;

a second electrode layer insulated from the first electrode layer to form an electric field;

a plurality of first electromagnetic inductive coils extending along a row direction and forming a plurality of first loops and a plurality of second electromagnetic inductive coils extending along a column direction and forming a plurality of second loops, the first and second electromagnetic inductive coils being disposed in a same layer as the first electrode layer;

wherein either the first electromagnetic inductive coils or the second electromagnetic inductive coils are broken into a plurality of electromagnetic inductive segments at the crossings of the first and second electromagnetic inductive coils; and

a plurality of bridge wires disposed in a same layer as the second electrode layer and configured to electrically connect the electromagnetic inductive segments of the first electromagnetic inductive coils or the second electromagnetic inductive coils through a plurality of via holes.

2. The in-cell inductive touch-control display substrate according to claim 1, wherein the first electrode layer is a common electrode layer including a plurality of common electrode elements, and the second electrode layer is a pixel electrode layer including a plurality of pixel electrode elements.

3. The in-cell inductive touch-control display substrate according to claim 2, wherein the first electromagnetic inductive coils and the second electromagnetic inductive coils are made of a same transparent conductive material as the common electrode layer, and the bridge wires are made of a same transparent conductive material as the pixel electrode layer.

4. The in-cell inductive touch-control display substrate according to claim 3, wherein the common electrode elements are connected as a whole and spatially separated at locations where the first electromagnetic inductive coils and the second electromagnetic inductive coils are disposed.

5. The in-cell inductive touch-control display substrate according to claim 2, wherein the first electromagnetic inductive coils and/or the second electromagnetic inductive coils comprise a first plurality of connected common electrode elements, and a second plurality of common electrode elements other than the first plurality of common electrode elements are connected as a whole and spatially separated from the first electromagnetic inductive coils and the second electromagnetic inductive coils.

6. The in-cell inductive touch-control display substrate according to claim 1, wherein the first electrode layer is a pixel electrode layer including a plurality of pixel electrode elements, and the second electrode layer is a common electrode layer including a plurality of common electrode elements.

7. The in-cell inductive touch-control display substrate according to claim 6, wherein the first electromagnetic inductive coils and the second electromagnetic inductive coils are made of a same transparent conductive material as the pixel electrode layer, and the bridge wires are made of a same transparent conductive material as the common electrode layer.

8. The in-cell inductive touch-control display substrate according to claim 6, wherein the common electrode elements are connected as a whole, and a hollow area configured to receive a bridge wire is disposed between adjacent common electrode elements.

9. The in-cell inductive touch-control display substrate according to claim 2, wherein the common electrode layer is disposed below the pixel electrode layer, the pixel electrode elements are spatially separated, and each of the pixel electrode elements includes at least one branch electrode.

10. The in-cell inductive touch-control display substrate according to claim 6, wherein the common electrode layer is disposed below the pixel electrode layer and the pixel electrode elements are spatially separated, and each of the pixel electrode elements includes at least one branch electrode.

11. The in-cell inductive touch-control display substrate according to claim 2, wherein the pixel electrode layer is disposed below the common electrode layer and the common electrode elements each include at least one branch electrode.

12. The in-cell inductive touch-control display substrate according to claim 6, wherein the pixel electrode layer is disposed below the common electrode layer and the common electrode elements each include at least one branch electrode.

13. The in-cell inductive touch-control display substrate according to claim 2, wherein a first electromagnetic inductive coil comprises at least one row of the common electrode elements or at least one row of the pixel electrode elements in a span along the column direction;

and a second electromagnetic inductive coil comprises at least one column of the common electrode elements or at least one column of the pixel electrode elements in a span along the row direction.

14. The in-cell inductive touch-control display substrate according to claim 6, wherein a first electromagnetic inductive coil comprises at least one row of the common electrode elements or at least one row of the pixel electrode elements in a span along the column direction;

and a second electromagnetic inductive coil comprises at least one column of the common electrode elements or at least one column of the pixel electrode elements in a span along the row direction.

15. An inductive touch-control screen comprising an in-cell inductive touch-control display substrate, wherein the in-cell inductive touch-control display substrate comprises:

a first electrode layer;

a second electrode layer insulated from the first electrode layer to form an electric field;

a plurality of first electromagnetic inductive coils extending along a row direction and forming a plurality of first loops and a plurality of second electromagnetic inductive coils extending along a column direction and forming a plurality of second loops, the first and second electromagnetic inductive coils being disposed in the same layer as the first electrode layer;

wherein the first electromagnetic inductive coils or the second electromagnetic inductive coils are broken into a plurality of electromagnetic inductive segments at the crossings of the first and second electromagnetic inductive coils; and

a plurality of bridge wires disposed in the same layer as the second electrode layer and configured to electrically connect the electromagnetic inductive segments of the first electromagnetic inductive coils or the second electromagnetic inductive coils through a plurality of via holes.

16. A touch-control display device comprising an inductive touch-control screen, the inductive touch-control screen comprising an in-cell inductive touch-control display substrate, wherein the in-cell inductive touch-control display substrate comprises:

a first electrode layer;

a second electrode layer insulated from the first electrode layer to form an electric field;

a plurality of first electromagnetic inductive coils extending along a row direction and forming a plurality of first loops and a plurality of second electromagnetic inductive coils extending along a column direction and forming a plurality of second loops, the first and second electromagnetic inductive coils being disposed in a same layer as the first electrode layer;

wherein the first electromagnetic inductive coils or the second electromagnetic inductive coils are broken into a plurality of electromagnetic inductive segments at the crossings of the first and second electromagnetic inductive coils; and

a plurality of bridge wires disposed in the same layer as the second electrode layer and configured to electrically connect the electromagnetic inductive segments of the first electromagnetic inductive coils or the second electromagnetic inductive coils through a plurality of via holes.