WO2014206142A1

WO2014206142A1 - Single-layer wiring capacitive 2d touch sensor

Info

Publication number: WO2014206142A1
Application number: PCT/CN2014/076492
Authority: WO
Inventors: 李海; 凌伟; 毛志敏; 文达飞
Original assignee: 深圳市汇顶科技股份有限公司
Priority date: 2013-06-27
Filing date: 2014-04-29
Publication date: 2014-12-31
Also published as: CN103345343A; CN103345343B

Abstract

A single-layer wiring capacitive 2D touch sensor comprises a substrate and a conductive layer attached on the substrate. The conductive layer comprises several sensing electrode slabs and several driving electrode slabs. The sensing electrode slabs and the driving electrode slabs are arranged alternately, and a gap having an equal interval exists between adjacent sensing electrode slabs and driving electrode slabs. The driving electrode slab comprises a first driving electrode slab and a second driving electrode slab, both the first driving electrode slab and the second driving electrode slab have a toothed edge, and the toothed edges of the both mesh with each other. The first driving electrode slabs in the driving electrode slabs are short circuited to form a driving electrode channel; the second driving electrode slabs in the driving electrode slabs are short circuited to form another driving electrode channel. By adopting the capacitive touch screen wiring manner, wiring can be simplified and resources can be saved.

Description

Capacitive two-dimensional touch sensor with single layer wiring

The invention belongs to the technical field of capacitive touch screens, and in particular relates to a capacitive two-dimensional touch sensor with single layer wiring. Background technique

Capacitive touch sensors have gradually replaced the resistive touch sensors due to their flexible touch and support for multi-touch, which has great advantages in the market. Conventional capacitive touch screens are usually implemented in multiple layers of wiring. However, although only a single layer of IT0 is used, it is necessary to add jumpers at the intersections of the driving electrodes and the sensing electrodes. In the process of adding jumpers, firstly, an insulating layer needs to be disposed at the intersection position, and then jumpers are arranged on the insulating layer. The increase of the jumper makes the overall wiring complicated and dense, and increases the manufacturing process. Process, and will affect the aesthetics of the wiring. Therefore, in the existing single-layer wiring design, the wires are more and more complicated, which not only affects the appearance, but also is not conducive to the saving of the manufacturing cost, and also increases the difficulty of the production and needs to be improved. Summary of the invention

The technical problem to be solved by the present invention is to provide a capacitive two-dimensional touch sensor with a single layer wiring, which aims to solve the problem of complicated wiring of the capacitive touch screen.

The present invention is achieved by a single-layer wiring capacitive two-dimensional touch sensor including a substrate And a conductive layer attached to the substrate, the conductive layer includes a plurality of sensing electrode blocks and a plurality of driving electrode blocks; the sensing electrode block is spaced apart from the driving electrode block, and adjacent sensing electrode blocks and driving electrode blocks Having an equally spaced gap therebetween; the driving electrode block includes a first driving electrode block and a second driving electrode block, the first driving electrode block and the second driving electrode block each having a tooth edge, and the teeth of the two The first driving electrode block in each of the driving electrode blocks is short-circuited to form one driving electrode channel; and the second driving electrode block in each of the driving electrode blocks is short-circuited to constitute another driving electrode channel.

Preferably, the plurality of sensing electrode blocks are divided into two parts in the order of arrangement, the first part leads the wire from one side of the substrate, the second part leads the wire from the other side of the substrate, and each sensing electrode block in the first part The corresponding one of the sensing electrode blocks in the two parts is short-circuited into one sensing channel.

Preferably, the tooth edges of the first driving electrode block and the second driving electrode block are triangular or trapezoidal.

Preferably, the tooth edge of the first driving electrode block is one tooth more than the tooth edge of the second driving electrode block or the tooth edge of the second driving electrode block is more than the tooth edge of the first driving electrode block. One tooth.

Preferably, the plurality of driving electrode blocks are divided into two parts in the order of arrangement; all the first driving electrode blocks of the first part constitute a first driving electrode channel, and all of the second driving electrode blocks of the first part constitute a second driving electrode channel, All of the first drive electrode blocks of the second portion constitute a third drive electrode channel, and all of the second drive electrode blocks of the second portion constitute a fourth drive electrode channel.

Preferably, the first driving electrode block has an M-shaped structure, and the second driving electrode block has a V-shaped structure.

Preferably, the first driving electrode block has a V-shaped structure, and the second driving electrode block has a triangular structure.

Preferably, the sensing electrode block is elongated, the first driving electrode block and the second driving The tooth edges of the electrode block are separated into a strip shape as a whole.

Preferably, the plurality of sensing electrode blocks are all taken out from one side of the substrate, and the plurality of driving electrode blocks are all taken out from the other side of the substrate.

Preferably, an area of the first driving electrode block is equal to an area of the second driving electrode block. The capacitive two-dimensional touch sensor using the single-layer wiring according to the present invention can simplify wiring on a single layer wiring, and has good touch flexibility and inductance, and also simplifies the manufacturing process of the circuit board and saves cost. DRAWINGS

1 is a partial view of a capacitive two-dimensional touch sensor wiring manner according to an embodiment of the present invention; FIG. 2 is a schematic diagram of a capacitive two-dimensional touch sensor of a single layer wiring according to an embodiment of the present invention. detailed description

The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The capacitive two-dimensional touch sensor of the single-layer wiring of the present invention can simplify the wiring in the design of the single-layer wiring by designing the mutual contact of the two driving electrode blocks, thereby saving the manufacturing cost.

As shown in FIG. 1, a single-layer wiring capacitive two-dimensional touch sensor includes a substrate and a conductive layer attached to the substrate, the conductive layer includes a plurality of driving electrode blocks 10 and a plurality of sensing electrode blocks 11; the sensing electrode block 11 and The driving electrode blocks 10 are spaced apart, and have an equally spaced gap between the adjacent sensing electrode blocks 11 and the driving electrode blocks 10; the driving electrode block 10 includes a first driving electrode block 101 and a second driving electrode The block 102, the first driving electrode block 101 and the second driving electrode block 102 each have a tooth edge, and the tooth edges of the two are engaged with each other; the first driving electrode block 101 of each driving electrode block 10 is short-circuited to form a driving The electrode channel; the second driving electrode block 102 in each of the driving electrode blocks 10 is short-circuited to constitute another driving electrode channel. As shown in FIG. 2, the short wires respectively short-circuited by the first driving electrode block and the second driving electrode block are taken out from both sides of the driving electrode block. After the first driving electrode block 101 and the second driving electrode block 102 of all the driving electrode blocks are sequentially short-circuited, respectively, only one of the first driving electrode blocks 101 and one of the second driving electrode blocks 102 are required. The separate guiding lines are connected to the signal generating module, which can reduce the wiring to make the circuit board beautiful, and can reduce the cost of wiring the wiring.

The first driving electrode block 101 has one more tooth than the second driving electrode block 102, and the tooth edge 103 of the first driving electrode block 101 half wraps the second driving electrode block 102, and the tooth edge 103 of the first driving electrode block 101 and the first driving electrode block 101 The overall shape of the tooth edge 104 of the second driving electrode block 102 is a rectangular block, and the sensing electrode block 11 is also a long block. Similarly, the second driving electrode block 102 may have one more tooth than the first driving electrode block 101, and the tooth edge 104 of the second driving electrode block 102 half wraps the first driving electrode block 101. The tooth edge 103 of the first driving electrode block 101 has a triangular shape or a trapezoidal shape, and the tooth edge 104 of the second driving electrode block 102 has a triangular shape or a trapezoidal shape.

As shown in FIG. 2, a plurality of sensing electrode blocks 11 are divided into two parts in the order of arrangement, a first part leads a wire from one side of the substrate, a second part leads a wire from the other side of the substrate, and each sensing electrode in the first part Each of the sensing electrode blocks corresponding to the serial number in the second part is short-circuited into one sensing channel. Similarly, a plurality of driving electrode blocks 10 are divided into two in the order of arrangement, all of the first driving electrode blocks of the first portion constitute a first driving electrode channel, and all of the second driving electrode blocks of the first portion constitute a second driving electrode channel. All of the first driving electrode blocks of the second portion constitute a third driving electrode channel, and all of the second driving electrode blocks of the second portion constitute a fourth driving electrode channel, and the first portion is guided from one side of the substrate The wire is led out, and the second portion leads the wire from the other side of the substrate. Alternatively, all of the plurality of sensing electrode blocks 11 may be routed from one side of the substrate, and all of the plurality of driving electrode blocks 10 are routed from the other side of the substrate. The plurality of sensing electrode blocks 11 and the plurality of driving electrode blocks 10 are divided into two parts and are taken out from both sides of the substrate. The design of the wiring from the two sides of the substrate enables the frame lines on both sides to be close to the same width, and also enables the overall wiring. Beautiful. It is also possible that all of the driving electrode block 10 and the sensing electrode block 11 are routed from one side of the substrate, so that the wiring has a larger number of lines on one side and fewer lines on the other side. For example, the sensing electrode block 11 can be distributed according to the sensing electrode block S8-S0 and the sensing electrode block S0-S8, which is a design for outgoing lines from both sides of the substrate; likewise, the sensing electrode block 11 can also follow the sensing electrode block S0-S15. The arrangement of the patterns is the design of the sensing electrode block from the single side of the substrate. For example, the driving electrode block 10 is arranged in such a manner as to drive the electrode block D0-D1 and the driving electrode block D2-D3, which is a design in which the driving electrode block is discharged from both sides of the substrate; likewise, the driving electrode block 10 can also be driven by the driving electrode block. The layout of D0-D1 is arranged, which is a design for outgoing from one side of the substrate.

The first driving electrode block 101 has an M-shaped structure, and the M-shape is placed laterally. The second driving electrode block 102 has a V-shaped structure, and the V-shaped structure is placed laterally. It is also possible to design that the first driving electrode block 101 has a V-shaped structure, and the second driving electrode block 102 has a triangular structure, and the triangular structure is spaced apart from the opening of the V-shaped structure. Alternatively, the first drive electrode block 101 has four triangular tooth edges, and the second drive electrode block 102 has three triangular tooth edges. Similarly, the tooth edge of the first driving electrode block 101 may be one tooth, two teeth, three teeth, four teeth, five teeth, etc., and the tooth edge of the second driving electrode block 102 may also be one tooth, two One tooth, three teeth, four teeth, five teeth, etc. The specific number of teeth is set according to actual needs. When setting the number of teeth, it is only necessary to satisfy the gear ratio of the outer half-wrapped driving electrode block to the wrapped driving electrode block. The number of teeth is one tooth.

Considering that the signal generated at the time of touch is associated with the area on the driving electrode block, the driving electrode block surface The size of the product determines the strength of the signal. Therefore, in the present invention, the area of the first driving electrode block 101 is equal to the area of the second driving electrode block 102.

The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection of the present invention. Within the scope. Industrial applicability

The single-layer wiring capacitive two-dimensional touch sensor of the invention can simplify wiring on a single layer wiring, and has good touch flexibility and inductivity, and also simplifies the manufacturing process of the circuit board and saves cost.

Claims

claims

1. A single-layer wiring capacitive two-dimensional touch sensor, including a substrate and a conductive layer attached to the substrate, wherein the conductive layer includes a plurality of sensing electrode blocks and a plurality of driving electrode blocks; the sensing electrode block and The driving electrode blocks are arranged at intervals, and there are equally spaced gaps between adjacent sensing electrode blocks and driving electrode blocks; the driving electrode blocks include a first driving electrode block and a second driving electrode block, and the first driving electrode Both the block and the second driving electrode block have a tooth edge, and the tooth edges of the two mesh with each other; the first driving electrode block in each driving electrode block is short-circuited to form a driving electrode channel; the second driving electrode block in each driving electrode block The driving electrode blocks are short-circuited to form another driving electrode channel.

2. The capacitive two-dimensional touch sensor according to claim 1, wherein the plurality of sensing electrode blocks are divided into two parts according to the order of arrangement. The first part leads to wires from one side of the substrate, and the second part leads from the other side of the substrate. The wires are drawn out, and each sensing electrode block in the first part is short-circuited with a corresponding sensing electrode block in the second part to form a sensing channel.

3. The capacitive two-dimensional touch sensor according to claim 1, wherein the tooth edges of the first driving electrode block and the second driving electrode block are triangular or trapezoidal.

4. The capacitive two-dimensional touch sensor according to claim 1, wherein the tooth edge of the first driving electrode block has one more tooth than the tooth edge of the second driving electrode block or the second driving electrode block The tooth edge of the first drive electrode block has one tooth more than the tooth edge of the first driving electrode block.

5. The capacitive two-dimensional touch sensor according to claim 2, wherein the plurality of driving electrode blocks are divided into two parts according to the order of arrangement; all the first driving electrode blocks in the first part constitute the first driving electrode channel, and the first driving electrode block forms a first driving electrode channel. All the second driving electrode blocks in one part constitute the second driving electrode channel, all the first driving electrode blocks in the second part constitute the third driving electrode channel, and all the second driving electrode blocks in the second part constitute the fourth driving electrode channel.

6. The capacitive two-dimensional touch sensor according to claim 1, wherein the first driving electrode block has an M-shaped structure, and the second driving electrode block has a V-shaped structure.

7. The capacitive two-dimensional touch sensor according to claim 1, wherein the first driving circuit The pole block has a V-shaped structure, and the second driving electrode block has a triangular structure.

8. The capacitive two-dimensional touch sensor according to claim 1, wherein the sensing electrode block is rectangular, and the tooth edges of the first driving electrode block and the second driving electrode block are meshed with each other to form a rectangular shape.

9. The capacitive two-dimensional touch sensor according to claim 1, wherein the plurality of sensing electrode blocks all lead out from one side of the substrate, and the plurality of driving electrode blocks all lead out from the other side of the substrate.

10. The capacitive two-dimensional touch sensor according to claim 1, wherein the area of the first driving electrode block is equal to the area of the second driving electrode block.