CN110399055A - A touch structure, preparation method and touch screen - Google Patents

Abstract

The present invention provides a touch control structure, comprising: a base layer, including a base and a BM layer arranged above the base; a first metal mesh layer is arranged above the BM layer, and the first metal mesh layer consists of rows of metal mesh units The array forms a touch metal grid layer with a long grid period, wherein the metal grid unit is composed of a plurality of pentagons, and an intermediate insulating layer is arranged on the first metal grid layer; the second metal grid layer is arranged on the Above the middle insulating layer, the second metal grid layer is composed of an array of metal grid units to form a touch metal grid layer with a long grid period, forming a complete touch structure with the first metal grid layer, and the top insulating layer is set on above the second metal mesh layer. Based on the present invention, by using pentagons to form the metal touch grid layer, the repetition period of the metal grid is extended, so that the period of the grid pattern is quite different from the RGB pixel period, effectively eliminating the moiré phenomenon, and improving the touch The quality of the control screen.

Description

A touch structure, preparation method and touch screen

technical field

The invention relates to the field of touch control, in particular to a touch control structure, a preparation method and a touch screen.

Background technique

Most of the existing metal mesh touch screens use very periodic graphics such as rhombuses, rectangles, and regular hexagons. The metal mesh touch screens that use very periodic graphics are bonded to the LCD display. , it is easy to interfere with the RGB pixels of the periodic LCD screen to form moiré patterns. Reduce the quality of the product and affect the user's visual experience.

Contents of the invention

The invention discloses a touch control structure, a preparation method and a touch screen. By using pentagons to form a metal touch grid layer, the repetition period of the metal grid is extended, so that the period of the grid pattern is different from the RGB pixel period. Larger, effectively eliminates the moiré phenomenon and improves the quality of the touch screen.

The first embodiment of the present invention provides a touch structure, including:

A base layer, including a base and a BM layer disposed above the base;

The first metal grid layer, the first metal grid layer is arranged above the BM layer, and the first metal grid layer is a touch metal grid layer with a long grid period formed by an array of metal grid units , wherein the metal grid unit is composed of a plurality of pentagons, and an intermediate insulating layer is arranged on the first metal grid layer;

The second metal grid layer, the second metal grid layer is arranged above the intermediate insulating layer, and the second metal grid layer is formed by an array of metal grid units to form a touch metal grid with a long grid period layer, forming a complete touch control structure with the first metal mesh layer.

A top insulating layer, the top insulating layer is disposed above the second metal grid layer.

Preferably, the first metal grid layer is provided with a first channel in the X-axis direction, and the second metal grid layer is provided with a second channel in the Y-axis direction, and the first channel is connected to the first channel. The metal wiring on the metal grid layer is electrically connected, and the second channel is electrically connected to the metal wiring on the second metal grid layer.

Preferably, the metal grid unit is composed of 12 pentagons.

Preferably, the angles of the pentagons are respectively 60°, 135°, 105°, 90°, and 150°.

Preferably, it is characterized in that a black frame is set on the base layer, and the black frame is set on the same layer as the BM ink layer, wherein the metal wiring is set on the black frame.

Preferably, the metal wires are laid on the black frame using nano-silver paste metal wires.

Preferably, it also includes a solder joint area, and one end of the silver nano paste metal wire is electrically connected to the solder joint area.

Preferably, a flexible circuit board is further included, the flexible circuit board is electrically connected to the solder joint area, and the flexible circuit is used for electrical connection with an external PCB board.

The second embodiment of the present invention provides a method for manufacturing a touch structure, including:

Prepare a substrate, and generate a BM layer on the substrate;

On the BM layer, a first metal grid layer is formed by a metal grid unit array, and an intermediate insulating layer is formed on the first metal grid layer by applying glue, exposing, and developing;

generating a second metal grid layer on the intermediate insulating layer;

A top insulating layer is formed on the second metal grid layer by applying glue, exposing and developing.

The third embodiment of the present invention provides a touch screen, including any one of the above touch structures.

Based on a touch control structure, preparation method and touch screen provided by the present invention, by designing a grid pattern composed of pentagons, the repeated cycle can be extended, so that the cycle of the grid pattern is equal to the RGB pixel cycle. The difference is large, which can effectively eliminate the moiré phenomenon, improve the quality of the touch screen, and enhance the user's visual experience.

Description of drawings

FIG. 1 is a schematic diagram of a touch structure provided by the first embodiment of the present invention;

FIG. 2 is a schematic diagram of a first metal grid layer of a touch control structure provided by the first embodiment of the present invention;

Fig. 3 is a schematic diagram of a metal grid unit of a touch structure provided by the first embodiment of the present invention;

Fig. 4 is a schematic diagram of superposition of first and second metal grid layers of a touch structure provided by the first embodiment of the present invention;

Fig. 5 is a schematic diagram of a touch structure provided by the first embodiment of the present invention corresponding to the setting of pentagonal angles;

FIG. 6 is a schematic flowchart of a manufacturing method of a touch structure provided by the second embodiment of the present invention.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments It is some embodiments of the present invention, but not all of them. Based on the implementation manners in the present invention, all other implementation manners obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention. Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the implementation manners in the present invention, all other implementation manners obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

The invention discloses a touch control structure, a preparation method and a touch screen. By using pentagons to form a metal touch grid layer, the repetition period of the metal grid is extended, so that the period of the grid pattern is different from the RGB pixel period. Larger, effectively eliminates the moiré phenomenon and improves the quality of the touch screen.

Please refer to FIG. 1, the first embodiment of the present invention provides a touch structure, including:

The base layer includes a base 1 and a BM layer 2 disposed above the base; it should be noted that the base 1 can be a glass substrate or a PET substrate, which can be selected according to actual conditions. For example, the glass substrate corresponds to OGS The touch structure, the PET substrate corresponds to the flexible touch structure, of course, in other embodiments, it can also be other correspondences, which are not specifically limited here, and these solutions are within the protection scope of the present invention.

The first metal grid layer 3, the first metal grid layer 3 is arranged above the BM layer 2, the first metal grid layer as shown in Figure 2, the first metal grid layer 3 is composed of The metal grid unit array forms a touch metal grid layer with a long grid period, wherein the metal grid unit is composed of a plurality of pentagons 6, as shown in FIG. 3 , the first metal grid Layer 3 is provided with an intermediate insulating layer 5; it should be noted that the material of the intermediate insulating layer is an organic insulating photoresist, used to avoid the first metal grid layer 3 and the second metal grid layer 4 There is an electrical connection, of course, in other embodiments, it can also be other insulating materials, which is not specifically limited in the present invention.

The second metal grid layer 4, the second metal grid layer 4 is arranged above the intermediate insulating layer 5, and the second metal grid layer 4 forms a contact with a long grid period by an array of metal grid units. The control metal grid layer forms a complete touch control structure with the first metal grid layer.

Through the above-mentioned metal grid unit formed by using pentagons, a metal grid layer is formed in the array, so that the repeated period of the metal grid is quite different from the RGB pixel period of the laminated LCD screen, effectively eliminating moiré Phenomenon, improve the quality of the touch screen, and then improve the user's visual experience

A top insulating layer 5 , the top insulating layer 5 is disposed above the second metal grid layer 4 . It should be noted that the top insulating layer is made of the same material as the middle insulating layer.

In this embodiment, the first metal grid layer 3 is provided with a first channel in the X-axis direction, and the second metal grid layer 4 is provided with a second channel in the Y-axis direction, and the first channel The second channel is electrically connected to the metal wiring on the first metal grid layer 3 , and the second channel is electrically connected to the metal wiring on the second metal grid layer. It should be noted that, in this embodiment, the first channel is used for periodically scanning signals, and the second channel is used for receiving signals. When a point on the screen is touched, the first channel of the point The capacitance of the first channel and the second channel changes, and the position where the touch occurs is determined by detecting the position where the capacitance changes. The contact formed by the first metal grid layer 3 and the second metal grid layer 4 The control graph is shown in Figure 4.

Please continue to refer to FIG. 3. In this embodiment, the metal grid unit is composed of 12 pentagons 6. It should be noted that in other embodiments, it can also be a metal grid unit composed of different numbers. Such as metal grid units composed of 6, 9, and 3 pentagons, these schemes can be set correspondingly according to the actual situation, and no specific limitation is made here, but these schemes are all within the protection scope of the present invention.

In this embodiment, the angles of the pentagon 6 are 60°, 135°, 105°, 90°, and 150° respectively. It should be noted that the corresponding relationship between the side lengths and angles of the pentagon is shown in FIG. Perfect splicing forms a touch grid. These solutions can be set according to the actual screen size. There is no specific limitation here, but these solutions are all within the protection scope of the present invention.

In this embodiment, it is characterized in that a black border is arranged on the base layer, and the black border is arranged on the same layer as the BM ink layer, wherein the metal wiring is arranged on the black border. It should be noted that the black frame is made of black photoresist material, which is used for shielding light leakage around and shielding metal wiring. Logo marks and function holes can be set on the black frame. Of course, in other embodiments, the black frame can also be used according to The actual situation corresponds to the setting, and these solutions are all within the protection scope of the present invention.

In this embodiment, the metal wires are laid on the black frame by using nano-silver paste metal wires. It should be noted that the metal wire layer is laid with nano-silver paste metal wires, the nano-silver paste metal wires are printed on the black frame, and the metal conductive layer is baked at a low temperature, wherein the nano- Silver paste metal wire, which is made of high-performance resin and silver powder with excellent conductivity.

In this embodiment, a solder joint area is also included, and one end of the nano-silver paste metal wire is electrically connected to the solder joint area. It should be noted that the solder joint area is used to centralize the metal wiring in one place, avoiding setting multiple connection points, resulting in cumbersome wiring, and can directly connect the flexible circuit board with the external PCB board at the solder joint. connect.

In this embodiment, a flexible circuit board is further included, the flexible circuit board is electrically connected to the solder joint area, and the flexible circuit is used for electrical connection to an external PCB board. Flexible circuit boards are printed circuits made of flexible insulating substrates. Flexible circuit boards have excellent electrical properties and can meet the design needs of smaller and higher-density installations. They also help reduce assembly processes and enhance reliability. Flexibility The circuit board can be bent, wound, and folded freely, and can withstand millions of dynamic bendings without damaging the wires. It can be arranged arbitrarily according to the requirements of the space layout, and can be moved and stretched arbitrarily in the three-dimensional space, so as to achieve component assembly and wire connection. The integration of flexible circuit boards can greatly reduce the volume and weight of electronic products, and is suitable for the development of electronic products in the direction of high density, miniaturization and high reliability.

Please refer to FIG. 6, the second embodiment of the present invention provides a method for manufacturing a touch structure, including:

S101, prepare a substrate, and generate a BM layer on the substrate;

S102, forming a first metal grid layer on the BM layer with a metal grid unit array, and forming an intermediate insulating layer on the first metal grid layer by applying glue, exposing, and developing;

S103, generating a second metal grid layer on the intermediate insulating layer;

S104, forming a top insulating layer on the second metal grid layer by applying glue, exposing and developing.

The third embodiment of the present invention provides a touch screen, including any one of the above touch structures.

Based on a touch control structure, preparation method and touch screen provided by the present invention, by designing a grid pattern composed of pentagons, the repeated cycle can be extended, so that the cycle of the grid pattern is equal to the RGB pixel cycle. The difference is large, which can effectively eliminate the moiré phenomenon, improve the quality of the touch screen, and enhance the user's visual experience.

The above are only preferred implementations of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions under the idea of the present invention belong to the protection scope of the present invention.

Claims (10)

1. a kind of touch-control structure characterized by comprising

Basal layer, including substrate and the BM being set to above substrate layer；

First metal mesh compartment, the first metal mesh compartment be set to it is described BM layers top, the first metal mesh compartment by The metal grill cell columns formation touch-control metal mesh compartment long at the grid period, wherein the metal grill unit is by multiple five What side shape was constituted, intermediate insulating layer is provided on the first metal mesh compartment；

Second metal mesh compartment, the second metal mesh compartment are set to above the intermediate insulating layer, second metal mesh The compartment touch-control metal mesh compartment long at the grid period by metal grill cell columns formation, forms with the first metal mesh compartment Complete touch-control structure；

Top layer, the top layer are set to above the second metal mesh compartment.

2. a kind of touch-control structure according to claim 1, which is characterized in that the first metal mesh compartment is provided with X-axis The first passage in direction, is provided with the second channel of Y direction on the second metal mesh compartment, the first passage with it is described Metal routing electrical connection on first metal mesh compartment, the second channel are walked with the metal on the second metal mesh compartment Line electrical connection.

3. a kind of touch-control structure according to claim 1, which is characterized in that the metal grill unit is by 12 pentagons It constitutes.

4. a kind of touch-control structure according to claim 3, which is characterized in that the pentagonal angle is respectively 60 °, 135°、105°、90°、150°。

5. a kind of touch-control structure according to claim 2, which is characterized in that it is provided with dark border on the basal layer, The dark border and the BM ink layer same layer are arranged, wherein in the metal routing setting and the dark border.

6. a kind of touch-control structure according to claim 5, which is characterized in that the metal routing uses nanometer silver paste metal Conducting wire be layed in the dark border.

7. a kind of touch-control structure according to claim 6, which is characterized in that further include solder bond area, the nano silver The one end and the solder bond area for starching plain conductor are electrically connected.

8. a kind of touch-control structure according to claim 7, which is characterized in that it further include flexible circuit board, the flexible electrical Road plate and the solder bond area are electrically connected, and the flexible circuit is used to be electrically connected with external pcb board.

9. a kind of preparation method of touch-control structure characterized by comprising

Prepare substrate, and generates BM layers on the substrate；

By metal grill cell columns formation at the first metal mesh compartment on BM layers described, lead on the first metal mesh compartment Gluing is crossed, is exposed, development forms intermediate insulating layer；

The second metal mesh compartment is generated in the intermediate insulating layer；

By gluing on the second metal mesh compartment, exposure develops and forms top layer.

10. a kind of touch screen, which is characterized in that including the touch-control structure as described in right wants 1 to 8 any one.