CN102129325B - touch circuit - Google Patents

Abstract

A touch circuit, comprising: a plurality of first axial wires arranged in parallel with each other on the surface of the transparent substrate; a plurality of spaced insulation spacers disposed on each of the first axial conductors; the first axial electrode blocks are arranged on the first axial guide lines on two sides of each insulation partition point and are connected in series by the first axial guide lines, the second axial electrode blocks are arranged on two sides of each first axial guide line in a split mode, and the second axial guide lines cross each insulation partition point and are connected in series with the second axial electrode blocks. The first axial electrode blocks and the second axial electrode blocks can be arranged and formed on the surface of the transparent substrate in the processes of sputtering, exposure, development, etching and the like in a single time, so that the manufacturing procedure is simplified.

Description

touch circuit

This application is a divisional application with an application date of May 21, 2008, an application number of 200810097985.9, and a title of "Method for Making a Touch Circuit Diagram".

【Technical field】

The invention relates to a touch circuit.

【Background technique】

Touch panels have been widely used in home appliances, communications, electronic information and other products, such as personal digital assistants (PDAs), various home appliances and game input interfaces, etc. Integrated with the display panel, users can use their fingers or stylus to click and input the action to be performed according to the function options on the display screen, and it is also used in the public system query tool, which can provide a convenient working system .

A general touch panel is to lay out a sensing area on the surface of a substrate. The sensing area is used to sense the touch signal of the human finger or the sensor pen. Most of the materials used in the sensing area are transparent conductive films (such as indium tin oxide ITO). , so that the user can touch and press the transparent conductive film corresponding to the corresponding screen on the display panel to achieve the touch function during operation.

Currently, the commonly used touch control principles can be divided into resistive, capacitive, infrared, electromagnetic and sonic sensing. Among them, the working principle of the capacitive sensing touch panel is to use the capacitance change generated by the electrostatic combination between the arranged transparent electrodes and the human body, thereby generating an induced current to detect the coordinates of the touch position to realize the work. Since the capacitive touch panel has obvious advantages in light transmittance, hardness, accuracy, response time, touch point life, operating temperature, and starting force, it is widely used at present.

In order to detect where a user touches a touch panel with a finger or a stylus, various capacitive touch sensing technologies have been developed. For example, in US Patent No. 6970160, a lattice touch sensing system is disclosed, which can be applied to detect the touch position of a touch sensing surface. The lattice touch sensing system includes two capacitive sensing layers separated by an intermediate insulating material to form a capacitive effect. Each capacitive sensing layer includes conductive elements arranged in parallel. The two capacitive sensing layers are perpendicular to each other. Each conductive element consists of a sequence of diamond-shaped pieces connected together by narrow conductive lines. The conductive elements on each capacitive sensing layer are electrically connected to a wire. A control circuit provides signals to the two groups of conductive elements through wires, and can receive the induction signals generated by the sensing elements when the surface is touched, so as to determine the touch position on each layer.

However, the above-mentioned technologies must go through two processes of ion vacuum sputtering, exposure, development, and etching to form a two-layer transparent conductive film (such as ITO) on the surface of a glass substrate, which causes cumbersome problems in the process. Increased production cost, reduced productivity.

【Content of invention】

The purpose of the present invention is to provide a touch control circuit that can integrate biaxial electrode blocks in a single process of sputtering, exposure, development and etching.

For reaching above-mentioned purpose, the concrete content of the present invention is

A touch circuit, comprising:

a plurality of mutually parallel first axial wires arranged on the surface of the transparent substrate;

a plurality of insulating spacers arranged at intervals on each of the first axial conductors;

A plurality of mutually spaced first axial electrode blocks, a plurality of mutually spaced second axial electrode blocks, and a plurality of mutually parallel second axial wires arranged on the surface of the transparent substrate, each The first axial electrode blocks are arranged on the first axial wires on both sides of each of the insulating points, and are connected in series by the first axial wires, and each of the second axial electrode blocks The blocks are arranged on both sides of each first axial wire, each second axial wire straddles each of the insulating points, and connects each of the second axial electrode blocks in series.

In an embodiment, the first axial wire is made of non-transparent conductive material.

In an embodiment, the first axial wire is made of transparent conductive material.

In one embodiment, the first axial electrode block, the second axial wire and the second axial electrode block are made of transparent conductive material.

A touch circuit, comprising:

a first axial wire disposed on the surface of the transparent substrate;

an insulating spacer provided on the first axial wire;

The first axial electrode block on the first axial wire connected in series by the first axial wire arranged on both sides of the insulating spacer;

spaced-apart second axial electrode blocks disposed on the surface of the transparent substrate;

Spaced second axial wires arranged on the surface of the transparent substrate, the second axial wires straddle the insulating spacers and connect the second axial electrode blocks in series.

In an embodiment, the first axial wire is made of non-transparent conductive material.

In an embodiment, the first axial wire is made of transparent conductive material.

In one embodiment, the first axial electrode block, the second axial wire and the second axial electrode block are made of transparent conductive material.

In one embodiment, the first axial wires overlap with the light-shielding shielding layer arranged in a black matrix on the display panel.

In an embodiment, the first axial wire serves as a light shielding element of the display panel.

A method for making a touch circuit diagram, comprising:

providing a first axial wire on the surface of a transparent substrate;

And an insulating spacer is provided on the first axial conductor;

On the surface of the transparent substrate, two spaced first axial electrode blocks, two spaced second axial electrode blocks and a second axial wire are arranged at one time;

The first axial electrode block is arranged on the first axial wires on both sides of the insulating spacer, and is connected in series by the first axial wires;

The second axial electrode block is placed on both sides of the first axial wire;

The second axial wire crosses the insulating spacer and connects the second axial electrode block in series to form a touch circuit diagram.

A method for making a touch circuit diagram, comprising:

A plurality of mutually parallel first axial wires are arranged on the surface of a transparent substrate;

And a plurality of insulating points are arranged at intervals on each of the first axial conductors;

a plurality of mutually spaced first axial electrode blocks, a plurality of mutually spaced second axial electrode blocks and a plurality of mutually parallel second axial wires are arranged on the surface of the transparent substrate;

Each first axial electrode block is arranged on the first axial wires on both sides of each insulating point, and is connected in series by the first axial wires;

Each second axial electrode block is placed on both sides of each first axial wire;

Each second-axis wire crosses each insulating spacer and connects each second-axis electrode block in series to form a touch circuit diagram.

Each first axial electrode block and each second axial electrode block of the present invention can be arranged and formed on the surface of a transparent substrate in a single process of sputtering, exposure, development, and etching, which can improve the production of touch The production efficiency of the board is improved, the cost is saved, and the production procedure is simplified.

【Description of drawings】

Figure 1: is a perspective view of a preferred embodiment of the present invention.

Fig. 2 to Fig. 4: are schematic diagrams of implementation steps of a preferred embodiment of the present invention.

【Detailed ways】

The steps of the method for making the touch control circuit diagram of the present invention and the effects that can be produced are described in detail as follows with preferred embodiments in conjunction with the accompanying drawings:

Please refer to FIG. 1, which is a perspective view of a preferred embodiment of the present invention, illustrating that the implementation steps of the method for making a touch circuit diagram of the present invention include in sequence:

On the surface of a transparent substrate 4, a plurality of first axial wires 11 (as shown in FIG. The line 23 can be made of a non-transparent conductive material, which can be metal materials such as gold, silver, copper, aluminum and the like with good conductivity, and coated on the transparent substrate 4 by sputtering or other equivalent methods. .

And a plurality of insulating spacers 3 (as shown in FIG. 3 ) are arranged at intervals on each of the first axial conductors 11, and the insulating spacers 3 can be made of a transparent insulating material, and the insulating material can be silicon oxide or other properties. An equivalent material with insulation capability is coated on the first axial wire 11 by sputtering or other equivalent methods.

According to the positions of the first axial wires 11, the second axial metal lines 23 and the insulating spacers 3, a plurality of mutually spaced first axial electrode blocks 12, a plurality of mutually spaced The second axial electrode block 22 and a plurality of parallel second axial wires 21 (as shown in FIG. 1 and FIG. 4 ).

Each first axial electrode block 12 is arranged on each first axial wire 11 on both sides of the insulating spacer 3, and is connected in series by the first axial wire 11;

Each second axial electrode block 22 is located on both sides of each first axial wire 11;

Each second axial wire 21 straddles each insulating spacer point 3 and connects each second axial electrode block 22 in series, and one end of each second axial wire 21 and one end of each second axial metal line 23 are connected to each other. connected so that the first axial electrode block 12 and each second axial electrode block 22 are adjacent to each other to form a touch circuit pattern. The first axial electrode block 12, the second axial wire 21 and the second axial electrode block 22 can be made of a transparent conductive material, and the transparent conductive material can be selected from Indium Tin Oxide (Indium Tin Oxide, ITO), coated on the transparent substrate 4 by sputtering or other equivalent methods.

Wherein, the transparent substrate 4 can actually be made of glass, glue film, glue shell or other transparent insulating material layers.

The plurality of first axial wires 11 can overlap with a plurality of black matrix (Black Matrix) arranged light-shielding shielding layers on a display panel (Display Panel); or, the shielding layer can also be omitted, and the second An axial wire 11 serves as a light-shielding element of the display panel. In addition, the first axial wire 11 can also be made of a transparent conductive material, and the transparent conductive material can be indium tin oxide (ITO), which is coated on the transparent substrate 4 by sputtering or other equivalent methods.

According to the above, it can be seen that each first axial electrode block 12 and each second axial electrode block 22 of the present invention can be arranged and formed on the surface of the transparent substrate 4 in a single process of sputtering, exposure, development, and etching. , so as to simplify the layout and production procedures of the touch circuit diagram.

Although the present invention has been described by the foregoing embodiments, the form and details can still be changed without departing from the spirit of the present invention. The foregoing is the most reasonable use method of the present invention, which is only one of the specific implementation modes of the present invention, but is not limited thereto.

Claims (10)

1. A touch circuit, characterized in that, comprising: a plurality of mutually parallel first axial wires arranged on the surface of the transparent substrate; a plurality of insulating spacers arranged at intervals on each of the first axial conductors; A plurality of mutually spaced first axial electrode blocks, a plurality of mutually spaced second axial electrode blocks, and a plurality of mutually parallel second axial wires arranged on the surface of the transparent substrate, each The first axial electrode blocks are arranged on the first axial wires on both sides of each of the insulating points, and are connected in series by the first axial wires, and each of the second axial electrode blocks The blocks are arranged on both sides of each first axial wire, each second axial wire straddles each of the insulating points, and connects each of the second axial electrode blocks in series. 2. The touch circuit according to claim 1, wherein the first axial wire is made of non-transparent conductive material. 3. The touch circuit according to claim 1, wherein the first axial wire is made of transparent conductive material. 4 . The touch circuit according to claim 1 , wherein the first axial electrode block, the second axial wire and the second axial electrode block are made of transparent conductive material. 5. A touch circuit, characterized in that, comprising: a first axial wire disposed on the surface of the transparent substrate; an insulating spacer provided on the first axial wire; The first axial electrode block on the first axial wire connected in series by the first axial wire arranged on both sides of the insulating spacer; spaced-apart second axial electrode blocks disposed on the surface of the transparent substrate; Spaced second axial wires arranged on the surface of the transparent substrate, the second axial wires straddle the insulating spacers and connect the second axial electrode blocks in series. 6. The touch circuit according to claim 5, wherein the first axial wire is made of non-transparent conductive material. 7. The touch circuit according to claim 5, wherein the first axial wire is made of a transparent conductive material. 8 . The touch circuit according to claim 5 , wherein the first axial electrode block, the second axial wire and the second axial electrode block are made of transparent conductive material. 9 . The touch control circuit according to claim 5 , wherein the first axial wire overlaps with a light-shielding shielding layer arranged in a black matrix on the display panel. 10 . 10 . The touch control circuit according to claim 5 , wherein the first axial wire is used as a light-shielding element of the display panel. 11 .