CN106843558A - Sensing metal grid of touch panel and manufacturing method thereof - Google Patents

Abstract

The invention provides a sensing metal grid of a touch panel and a manufacturing method thereof. The preparation method comprises the following steps: defining a plurality of first reference nodes and first reference points on a first plane, wherein the plurality of first reference nodes are regularly arranged, and the first reference points are arranged in the middle of any two adjacent first reference nodes; defining a plurality of second reference nodes and second reference points on a second plane, wherein the plurality of second reference nodes are regularly arranged and are arranged in a staggered way with the vertical projections of the plurality of first reference nodes, and the vertical projections of the first reference points are the same as the vertical projections of the second reference points; randomly selecting a first break point in an area capable of being deviated by taking each first reference point as a center; and a first grid pattern block connecting all the first reference nodes and the first break points and forming the sensing metal grid on the first plane.

Description

Sensing metal grid of touch panel and its manufacturing method

technical field

The present invention relates to a sensing metal grid of a touch panel and a manufacturing method thereof, in particular to a sensing metal grid of a touch panel capable of reducing or avoiding occurrence of Moire and a manufacturing method thereof.

Background technique

At present, touch technology has been widely used in display devices of various electronic products, so that users can control the actions of the electronic products by touch. In order to make the electrodes in the touch area of the touch panel difficult to be seen, indium tin oxide (ITO) is usually used to form transparent electrodes. However, as the application of touch panels gradually develops in the direction of large size, the technology using transparent electrodes of indium tin oxide has technical problems such as large resistance, slow touch response speed, multi-process steps and high production cost. Therefore, metal mesh sensing electrodes are developed to replace the application of the ITO transparent electrodes.

However, when the metal grid of the touch panel is attached to the display panel, so-called interference fringe (Moire) is likely to occur, which affects the display quality of the image. The generation of interference fringes is mainly caused by the shape of the metal grid pattern. When adjacent fringe patterns are regularly arranged with each other, optical interference fringes will be generated. In addition, when the line width of the metal grid is thicker, or adjacent stripes overlap or intersect to increase the thickness of the stripe patterns, interference fringes will easily occur. Another reason is that when the touch panel is attached to the display panel, the metal grid of the touch panel and the thin-film transistor array (Thin-FilmTransistor array, TFT array) of the display panel (such as black matrix (black matrix) or RGB pixel arrangement ) are both arranged in a regular grid, so when two patterns arranged in a regular grid overlap, optical interference fringes will also be generated.

In order to avoid or reduce the occurrence of interference fringes, the pattern and line shape of the metal grid of the current touch panel are usually arranged according to the thin film transistor array of the display panel, and are designed to be staggered and regularly arranged by a plurality of linear metal micro-wires. A grid pattern is formed in a way to increase visibility. For example, the metal grid includes a plurality of linear first metal microwires extending in a first direction and arranged in parallel, and a plurality of linear second metal microwires extending in a second direction and arranged in parallel, wherein a plurality of The linear first metal micro-wires and the plurality of linear second metal micro-wires are isolated from each other and interlaced to form a touch array. However, the metal grid of the touch panel in the prior art must cooperate well with the thin film transistor array of the display panel to reduce the occurrence of interference fringes. The angle needs to be carefully designed, which makes the design difficult, and the visibility is easily reduced due to the design error of the metal grid pattern. On the other hand, if the random pattern design is used to solve the interference fringe problem, it may cause uneven brightness due to the different sizes and uneven distribution of the opening ratio of the grid design. When a plurality of random grid blocks are combined with each other, random patterns may be difficult to splice or produce interference patterns at the intersections of their interfaces due to random changes in node positions.

Therefore, how to develop a sensing metal grid for a touch panel and its manufacturing method to solve the problems faced by the prior art is an issue to be solved.

Contents of the invention

The object of the present invention is to provide a sensing metal grid for a touch panel and a method for making the same, so as to form a sensing metal grid with random grid blocks and avoid wiring of the grid blocks of the sensing metal grid Interference fringes occur when stripes overlap or have too many intersections.

Another object of the present invention is to provide a sensing metal grid for a touch panel and a manufacturing method thereof, so as to precisely control the change of random grid blocks of the sensing metal grid to avoid the mesh of the sensing metal grid Due to the randomly changing design of the line stripes of the grid block, the aperture ratio is not uniform or the distribution is uneven, and at the same time, the phenomenon of uneven brightness of the touch display device applied to it is avoided.

Another object of the present invention is to provide a sensing metal grid for a touch panel and its manufacturing method, so as to accurately control the change of random grid blocks of the sensing metal grid, so that more than two grid blocks can be When performing overlapping combinations, avoid overlapping patterns on the overlapping interfaces of the two sets of grid tiles, which will affect the visual effect.

Another object of the present invention is to provide a sensing metal grid for a touch panel and a manufacturing method thereof, so as to form a sensing metal grid with random grid blocks according to the arrangement design of pixel units.

To achieve the above purpose, the present invention provides a sensing metal grid for a touch panel, which includes a transparent substrate, at least one first grid block and at least one second grid block. The transparent substrate has a first plane and a second plane. The first grid block is set on the first plane and has a plurality of first reference nodes, a plurality of first reference points and a plurality of first vertices. Wherein a plurality of first reference nodes are regularly arranged. A plurality of first reference points are respectively set in the middle of any two adjacent first reference nodes. The second grid block is set on the second plane and has a plurality of second reference points and a plurality of second reference points. A plurality of second reference points are regularly arranged. The plurality of second reference points are respectively set in the middle of any two adjacent second reference points, the vertical projections of the plurality of first reference points and the plurality of second reference points are arranged alternately, and the plurality of first reference points and the vertical projections of the plurality of second reference points are arranged alternately. The vertical projections of the plurality of second reference points are the same. Each first inflection point corresponds to the first reference point, and is randomly selected within a deflectable area with the first reference point as the center. The first grid block is formed by connecting all adjacent first reference nodes and first vertices.

Wherein the second grid block further has a plurality of second vertices corresponding to the second reference point, centered on the second reference point, randomly selected in the shiftable area; wherein the second The grid block is formed by connecting all adjacent second reference nodes and the second vertices.

Wherein the second grid block further has a plurality of second vertices, and the plurality of second vertices are the vertical projections of the plurality of first vertices on the second plane; wherein the second grid diagram The block is formed by connecting all adjacent second reference nodes and the second vertices.

Wherein the second grid block and the first grid block are projected on the vertical projection of the second plane and displaced horizontally by an offset distance; wherein the offset distance is equal to the vertical projection position of any second reference node to The distance of any vertical projected position of the first reference node.

Wherein the second grid block further has a plurality of second grid nodes and a plurality of second vertices; the second grid nodes correspond to the second reference node, with the second reference node as the center, at the Randomly selected within the deflectable area; the second inflection point corresponds to the second reference point, with the second reference point as the center, randomly selected within the deflectable area; wherein the second grid The block is formed by connecting all adjacent second grid nodes and the second vertices on the second plane.

Wherein the shiftable area is within a circular area or on a circle formed by a predetermined radius value, wherein the range of the predetermined radius value is between the distance between any two adjacent first reference nodes or any two adjacent One-eighth to one-two-hundredth of the pitch of the second reference node.

Wherein the range of the predetermined radius value is between one tenth and one hundredth of the distance between any two adjacent first reference nodes or the distance between any two adjacent second reference nodes.

Wherein the shiftable area is within a circular area formed by a first predetermined radius value and a second predetermined radius value or on two circumferences, the range of the first predetermined radius value and the second predetermined radius value is between The distance between any two adjacent first reference nodes or the distance between any two adjacent second reference nodes is one-eighth to one-two hundredth, and the first predetermined radius value is greater than the second predetermined radius value.

Wherein the range of the first predetermined radius value is between one tenth and one hundredth of the distance between any two adjacent first reference nodes or the distance between any two adjacent second reference nodes.

To achieve the above object, the present invention provides a method for manufacturing a sensing metal grid of a touch panel, the steps of which include: (a) defining a plurality of first reference nodes and a plurality of first reference points on a first plane, Wherein a plurality of first reference nodes are regularly arranged, and a plurality of first reference points are respectively set in the middle of any two adjacent first reference nodes; (b) defining a plurality of second reference nodes on a second plane and A plurality of second reference points, wherein the plurality of second reference nodes are arranged regularly and interlaced with the vertical projections of the plurality of first reference nodes, and the vertical projections of the plurality of first reference points and the plurality of second reference points are the same; (c) randomly select a first inflection point in a shiftable area with each first reference point as the center; and (d) connect all adjacent first reference nodes and first inflection points, at the first A plane constitutes a first grid block of the sensing metal grid.

The method for manufacturing the sensing metal grid of the touch panel further includes the step of: (e) randomly selecting a second fold in the deflectable area with each second reference point as the center and (f) connecting all the adjacent second reference nodes and the second inflection points to form a second grid block of the sensing metal grid on the second plane.

The method for manufacturing the sensing metal grid of the touch panel further includes the steps of: (e) vertically projecting the first grid block on the second plane; and (f) the first grid The block is shifted horizontally by an offset distance to form a second grid block of the sensing metal grid on the second plane, wherein the offset distance is equal to the vertical distance between the first reference node and the second reference node Projection spacing.

The method for manufacturing the sensing metal grid of the touch panel further includes the steps of: (e) defining a vertical projection of the first inflection point on the second plane as a second inflection point; and (f) connecting All the adjacent second reference nodes and the second inflection points form a second grid block of the sensing metal grid on the second plane.

The method for manufacturing the sensing metal grid of the touch panel further includes the step of: (e) randomly selecting a second grid in the shiftable area with each second reference node as the center node, and the vertical projection of the first vertex on the second plane is defined as a second vertex; and (f) connecting all adjacent nodes of the second grid with the second vertex, at the second The two planes form a second grid block of the sensing metal grid.

The method for manufacturing the sensing metal grid of the touch panel, wherein the step (c) further includes the step (c1) centering on each of the first reference nodes, randomly selecting a first reference node in the deflectable area a grid node; and step (d) further includes step (d1) connecting all adjacent nodes of the first grid and the first vertices to form the first grid of the sensing metal grid on the first plane A grid tile.

The method for manufacturing the sensing metal grid of the touch panel, wherein the deflectable area is in a circular area or on a circle formed by a predetermined radius value, wherein the range of the predetermined radius value is between any One-eighth to one-twentieth of the distance between two adjacent first reference nodes or the distance between any two adjacent second reference nodes.

The method for manufacturing the sensing metal grid of the touch panel, wherein the range of the predetermined radius value is between the distance between any two adjacent first reference nodes or the distance between any two adjacent second reference nodes One-tenth to one-hundredth.

The method for manufacturing the sensing metal grid of the touch panel, wherein the deflectable area is within an annular area or on two circumferences formed by a first predetermined radius value and a second predetermined radius value, wherein the The first predetermined radius value is greater than the second predetermined radius value, and is one-eighth to one-two-hundredth of the distance between any two adjacent first reference nodes or the distance between any two adjacent second reference nodes .

The method for manufacturing the sensing metal grid of the touch panel, wherein the range of the first predetermined radius value is between the distance between any two adjacent first reference nodes or the distance between any two adjacent second reference nodes One-tenth to one-hundredth of the pitch.

Description of drawings

FIG. 1 discloses a flow chart of manufacturing a sensing metal mesh for a touch panel according to a preferred embodiment of the present invention.

2A to 2F show schematic diagrams of the staged structure in the process steps of FIG. 1 .

FIG. 3A shows a sensing metal grid formed by splicing a plurality of grid tiles.

FIG. 3B shows an exemplary electrode structure with two opposing layers of sensing metal grids.

FIG. 4 discloses a flow chart of manufacturing a sensing metal grid of a touch panel according to another preferred embodiment of the present invention.

5A to 5D illustrate schematic diagrams of the staged structure in the process steps of FIG. 4 .

FIG. 6 discloses a flow chart of manufacturing a sensing metal grid of a touch panel according to another preferred embodiment of the present invention.

7A to 7D show schematic diagrams of the staged structure in the process steps of FIG. 6 .

FIG. 8 discloses a structure corresponding diagram of a sensing metal grid and a pixel layer in a preferred embodiment of the present invention.

【Symbol Description】

1: Sensing metal grid

11: Transparent substrate

111: First plane

112: second plane

12: First grid tile

12a: The first metal mesh

12A: first sensing electrode

121: first reference node

121': the first grid node

13: Second grid tile

13A: Second sensing electrode

131: Second reference node

141: First reference point

142: Second reference point

141': first inflection point

142': Second turning point

2: Pixel Layer

21: Pixel unit

A1,A2: Offsetable area

C1, C2: Offsetable area

D1, D2: offset distance

P1: Shiftable area

R, R1, R2: Predetermined radius values

S10～S16, S20～S26, S30～S36: steps

X, Y: axis

detailed description

Some typical embodiments embodying the features and advantages of the present invention will be described in detail in the description in the following paragraphs. It should be understood that the present invention is capable of various changes in different ways without departing from the scope of the present invention, and that the description and drawings therein are illustrative in nature rather than limiting the present invention.

FIG. 1 discloses a flow chart of manufacturing a sensing metal grid of a touch panel according to a preferred embodiment of the present invention, and FIGS. 2A to 2F disclose a schematic diagram of the staged structure in the process steps of FIG. 1 . The sensing metal grid of the touch panel of the present invention and its manufacturing method are briefly described as follows: first, as shown in Figures 1, 2A and 2B, a transparent substrate 11 is provided, wherein the transparent substrate 11 has a first plane 111 and a second plane 112, and define a plurality of first reference nodes 121 and a plurality of first reference points 141 on the first plane 111 (eg step S10). In this step, the plurality of first reference nodes 121 are regularly arranged, and the plurality of first reference points 141 are respectively set in the middle of any two adjacent first reference nodes 121 . Next, a plurality of second reference nodes 131 and a plurality of second reference points 142 are defined on the second plane 112 (such as step S11 ). In this step, the plurality of second reference nodes 131 are also regularly arranged, and the plurality of second reference points are respectively set in the middle of any two adjacent second reference nodes 131 . In this embodiment, as shown in FIGS. 1 , 2A and 2B, a plurality of first reference nodes 121 form a diamond-shaped array pattern unit on the first plane 111 and extend along the X-Y axis direction. Of course, the present invention is not limited thereto. Therefore, any pattern units that can be extended and spliced repeatedly, such as triangles, rectangles, hexagons, octagons, etc., are applicable. The pattern units formed by the plurality of second reference nodes 131 on the second plane 112 are also the same, and will not be repeated here. Also in this embodiment, the vertical projections of the first reference nodes 121 and the second reference nodes 131 are arranged alternately, and the vertical projection positions of the first reference points 141 and the second reference points 142 are the same. Next, as shown in FIGS. 2C-2F , define a shiftable area C1, C2 (such as step S12). In this embodiment, the deflectable regions C1 and C2 are both circular regions formed by a predetermined radius R. As shown in FIG. Afterwards, as shown in FIGS. 1 and 2C , a first inflection point 141' is randomly selected in its corresponding deflection area with each first reference point 141 as the center (such as step S13). Next, as shown in FIGS. 1 and 2D, all adjacent first reference nodes 121 and first inflection points 141' are connected on the first plane 111 to form a sensing metal grid on the first plane 111. The first grid block 12 (eg step S14).

Next, as shown in Figures 1, 2A and 2E, the same is true for the second grid block 13 on the second plane 112, first centering on the second reference point 142, within the corresponding shiftable area C2 Randomly select the second inflection point 142' (eg step S15). Finally, as shown in FIGS. 1 and 2F, by connecting all adjacent second reference nodes 131 and second inflection points 142' on the second plane 112, the second sensing metal grid can be formed on the second plane 112. grid block 13 (eg step S16).

In some embodiments, the first grid block 12 formed by the first plane 111 and the second grid block 13 formed by the second plane 112 can be regarded as a grid block with random non-repetitive patterns, Multiple grid tiles can be combined to form a grid tile combination with a larger area. As shown in FIG. 3A , it reveals a sensing metal grid composed of multiple grid tiles. The splicing can be completed by overlapping the reference nodes of two adjacent grid blocks, and multiple first grid blocks 12 can be successively overlapped along the first direction (such as the X axis) or the second direction (Y axis). Combinations of grid tiles that form larger areas. In this embodiment, the first metal grid 12a is formed by splicing, for example but not limited to, 2×4=8 first grid blocks 12 to form the metal grid required by the sensing electrodes. FIG. 3B further reveals two opposite layers of sensing electrodes, wherein the first sensing electrode 12A and the second sensing electrode 13A with sensing metal grids on different layers are composed of a combination of multiple grid blocks, and Each grid block combination is composed of a plurality of random non-repetitive grid blocks 12 , 13 overlapped and combined. In this embodiment, due to the limitation of the deflectable area, as in the previous embodiment, the deflectable areas C1 and C2 are circular areas formed by an equal predetermined radius value R, and the first grid block 12 The first reference node 121 and the second reference node 131 of the second grid block 13 are all regularly arranged, so each first grid block 12 or second grid block 13 is compared with another grid block When splicing, there are regularly arranged nodes at the junction of each other, which is easy to splice, and it will not cause splicing difficulties or excessive opening ratio of splicing interface caused by excessive random changes and node offsets as conventionally known, and also avoids grid blocks Seam marks produced when designing laps. Taking the sensing metal grid shown in FIG. 3B as an example, it is formed on the transparent substrate through a photomask development and metal forming etching process. In the embodiment of the present invention, the predetermined radius value is relative to the line spacing in the grid block, that is, relative to the distance between any two adjacent first reference nodes 121 or any two adjacent second reference nodes 131 . The predetermined radius value may be one eighth to one two hundredth of the distance between any two adjacent first reference nodes 121 or any two adjacent second reference nodes 131 . A preferred implementation range of the predetermined radius value is one-tenth to one-hundredth of the distance between the aforementioned lines, that is, between 3 microns and 50 microns, preferably between 5 microns and 30 microns.

FIG. 4 discloses a flow chart of manufacturing a sensing metal grid of a touch panel according to another preferred embodiment of the present invention, and FIGS. 5A to 5D disclose a schematic diagram of a staged structure in the process steps of FIG. 4 . The sensing metal grid of the touch panel of the present invention and its manufacturing method are briefly described as follows: first, as shown in FIGS. ), and define a plurality of first reference nodes 121 and a plurality of first reference points 141 on the first plane 111 (such as step S20). Likewise, in this embodiment, the plurality of first reference nodes 121 are regularly arranged, and the plurality of first reference points 141 are respectively set in the middle of any two adjacent first reference nodes 121 . Next, a plurality of second reference nodes 131 and a plurality of second reference points 142 are defined on the second plane 112 (such as step S21 ). In this step, the plurality of second reference nodes 131 are also regularly arranged, and the plurality of second reference points 142 are respectively set in the middle of any two adjacent second reference nodes 131 . In this embodiment, as shown in FIGS. 4 and 5A, a plurality of first reference nodes 121 form a diamond-shaped array pattern unit on the first plane 111 and extend along the X-Y axis direction. Of course, the present invention is not limited thereto. Any pattern units that can be extended and spliced repeatedly, such as triangles, rectangles, hexagons, octagons, etc., are applicable. The pattern units formed by the plurality of second reference nodes 131 on the second plane 112 are also the same, and will not be repeated here. Also in this embodiment, the vertical projections of the first reference nodes 121 and the second reference nodes 131 are arranged alternately, and the vertical projection positions of the first reference points 141 and the second reference points 142 are the same. Next, define a deflectable area P1 (such as step S22). In this embodiment, the deflectable area P1 is on a circle formed by a predetermined radius R. As shown in FIG. Then, with each first reference point 141 as the center, a first inflection point 141' is randomly selected in its corresponding deflection area (such as step S23). Next, as shown in FIGS. 4 and 5B , by connecting all adjacent first reference nodes 121 and first inflection points 141 ′ on the first plane 111, the first sensing metal grid can be formed on the first plane 111. grid block 12 (eg step S24).

On the other hand, as shown in FIGS. 4 and 5C, for the second grid block 13 on the second plane 112, the vertical projection of the first corner point 141' on the second plane 112 is first defined as the second corner point 142' (such as step S25), that is, the vertical projection positions of the first inflection point 141' of the first plane and the second inflection point 142' of the second plane are the same. Then, as shown in FIGS. 4 and 5D , all adjacent second reference nodes 131 and second inflection points 142 ′ on the second plane 112 are connected to form a second sensing metal grid on the second plane 112 . grid block 13 (eg step S26).

FIG. 6 discloses a flow chart of manufacturing a sensing metal grid of a touch panel according to another preferred embodiment of the present invention, and FIGS. 7A to 7C disclose a schematic diagram of the staged structure in the process steps of FIG. 6 . As shown in FIGS. 6 , 7A and 7B , compared with the foregoing embodiments, the first grid block 12 can be formed on the first surface 111 of the transparent substrate 11 (refer to FIG. 2A ). In the present embodiment, the process steps S30 to S32 of the sensing metal grid of the touch panel are the same as the process steps S10 to S12 shown in FIG. 1 , and will not be repeated here. After performing steps S30 to S32, a deflectable area A1, A2 is defined. However, different from the above-mentioned embodiments, in this embodiment, the deflectable areas A1 and A2 are both within an annular area formed by the first predetermined radius value R1 and the second predetermined radius value R2. In addition, on the first plane 111, each first reference node 121 and each reference point 141 are correspondingly applied with a shiftable area A1, A2, as shown in FIGS. 6 and 7A, each first reference node 121 is Center, randomly select the first grid node 121' in its corresponding offset area A1; at the same time, take each first reference point 141 as the center, randomly select the first grid node 121' in its corresponding offset area A2 A turning point 141' (such as step S33). Next, as shown in FIGS. 6 and 7B, connect all adjacent first grid nodes 121' and first vertices 141' on the first plane 111 to form the first grid block 12 (such as step S34) . On the other hand, the second grid block 13 can be formed on the second surface 112 of the transparent substrate 11 (refer to FIG. 2A ). But different from the foregoing embodiments, in this embodiment, as shown in FIG. 6 , the formation of the second grid block 13 first vertically projects the line pattern of the first grid block 12 on the first plane 111 onto the second grid block 13. plane 112 (eg step S35). Next, as shown in Figures 6 and 7C, the vertically projected first grid block 12 is horizontally displaced by an offset distance D1, D2, and the horizontal displacement direction can be along the X-axis and Y-axis from the projected initial origin position. axis or to each quadrant direction of the XY axis (such as step S36) _, wherein the offset distance D1, D2 can be the distance from the vertical projection position of any second reference node 131 to the vertical projection position of any first reference node 121 . In the embodiment shown in FIG. 7C , the horizontal displacement is along the X-axis from the projected initial origin position, but the present invention is not limited thereto. In this embodiment, the offset distance D1 is equal to the vertical projected distance D1 between the first reference node 121 and the second reference node 131 , so that the second grid block 13 is formed on the second surface 112 . In some embodiments, the offset distance D2 can further be the distance between the vertical projections of any first reference node 121 and any second reference node 131 . In addition, as shown in the embodiment shown in FIG. 7D , after the first grid block 12 is vertically projected on the second surface 112 , it is offset from the projected initial origin position to the fourth quadrant of the XY axis by an offset distance D2 After that, the second grid block 13 can be formed on the second surface 112 . The present invention is not limited to the foregoing embodiments. After the first grid block 12 is vertically projected on the second surface 112, in addition to being offset to the fourth quadrant (lower right) of the XY axis, it is also from the projected The initial origin position is offset to the first quadrant (upper right), second quadrant (upper left) or third quadrant (lower left) of the XY axis. Any offset that allows the first grid blocks 12 and the second grid blocks 13 to be alternately arranged is applicable to the application of the present invention, and the present invention is not limited thereto.

Compared with the previous embodiment, in this embodiment, besides the random vertices in the grid configuration of the first grid block 12 and the second grid block 13, each regularly arranged reference node can also be selected randomly And change. Since the random first grid nodes 121' all fall in the shiftable area A1 centered on the corresponding first reference node 121, when two groups of first grid tiles 12 are designed to overlap again, the The first reference nodes 121 that overlap the boundaries can be joined correspondingly, and the first grid nodes 121' on the boundaries of two adjacent first grid tiles 12 will all fall in their corresponding offset regions A1, through Through the range control of the deflectable area A1 (that is, to control the size of the annular area given the first predetermined radius value R1 and the second predetermined radius value R2), the opening ratio of the boundary junction will not be too large, and it is not easy to have Stitching marks occur. In some embodiments, the first grid nodes 121' at the outermost boundary can be designated as the original first reference nodes 121 and arranged regularly, so that when multiple first grid tiles 12 are stitched together It can be completed more easily, and there will be no overlapping lines between the overlapping interfaces, which will affect the visual effect.

In some embodiments, the pattern unit formed by the array of the first reference nodes 121 and the pattern unit formed by the array of the second reference nodes 131 can be formed by a triangle, rectangle, rhombus, hexagon or octagon . In this embodiment, although rhombuses are used as an example to constitute pattern units, the present invention is not limited thereto. FIG. 8 discloses a structure corresponding diagram of the sensing metal grid of the touch panel shown in FIG. 1 and the pixel layer of a display module. As shown in Figure 8, the design of each first grid block 12 or each second grid block 13 of the sensing metal grid 1 of the touch panel of the present invention corresponds to the pixel layer of the display module 2, wherein each pixel unit 21 is composed of red sub-pixels, green sub-pixels and blue sub-pixels. To meet different requirements, the arrangement and combination of the red sub-pixels, green sub-pixels and blue sub-pixels may have different modes. The reference point of the present invention can be designed in a modular manner in response to the configuration of different regions, that is, the regular arrangement of the first reference node or the second reference node can be designed according to the arrangement of pixel units, thereby effectively preventing The phenomenon of interference fringes with the pixel unit. The side length of each grid block 12 , 13 is at least larger than the size of a pixel unit 21 .

To sum up, the present invention provides a sensing metal grid for a touch panel and a manufacturing method thereof, so as to form a sensing metal grid structure with random grid blocks, avoiding the grid pattern of the sensing metal grid The line stripes of the block overlap or have too many intersections, causing interference fringes to occur. In addition, the sensing metal grid and the manufacturing method of the present invention can more precisely control the change of the random grid block of the sensing metal grid, so as to avoid the line stripes of the grid block of the sensing metal grid due to random The changing design causes the opening ratio to be different or the distribution is uneven, and at the same time avoid the uneven brightness of the touch display device it is applied to. On the other hand, the present invention uses a specific shiftable area to control the random pattern change of the sensing metal grid structure, so that when two or more grid blocks are overlapped and combined, the overlap between two adjacent grid blocks can be avoided. The overlapping interface produces overlapping lines and affects the visual effect. Moreover, the design of the grid block of the sensing metal grid can be formed according to the arrangement design of the pixel units.

The present invention can be modified in various ways by those who are familiar with this technology, but all are within the desired protection of the scope of the appended patent application.

Claims (11)

1. the sensing metal grill of a kind of contact panel, including：

One transparency carrier, with one first plane and one second plane；

At least one first grid segment, it is arranged at first plane, with multiple first reference modes, multiple first reference points and multiple first breaks, wherein the plurality of first reference mode is regularly arranged, the plurality of reference point is respectively arranged at the middle of wantonly two adjacent first reference modes；And

At least one second grid segment, it is arranged at second plane, with multiple second reference points and multiple second reference points, wherein the plurality of second reference point is regularly arranged, second reference point is respectively arranged at the middle of wantonly two adjacent second reference points, the upright projection setting interlaced with each other of the plurality of first reference point and the plurality of second reference point, and the plurality of first reference point is identical with the upright projection of the plurality of second reference point；

Each of which first break centered on first reference point, person can be at random selected in one corresponding to first reference point in offset area；Wherein the first grid segment connects all adjacent first reference modes and is formed with first break.

2. the sensing metal grill of contact panel as claimed in claim 1, wherein the second grid segment have more multiple second breaks, corresponding to second reference point, centered on second reference point, and can selected person at random in offset area in this；Wherein the second grid segment connects all adjacent second reference modes and is formed with second break.

3. the sensing metal grill of contact panel as claimed in claim 1, wherein the second grid segment have more multiple second breaks, and the plurality of second break is respectively the plurality of first break in the upright projection person of second plane；Wherein the second grid segment connects all adjacent second reference modes and is formed with second break.

4. the sensing metal grill of contact panel as claimed in claim 1, wherein the second grid segment the first grid segment are projected on the upright projection and the offset distance of horizontal displacement one of second plane；Wherein the offset distance is equal to the distance of upright projection position to the upright projection position of any first reference mode of any second reference mode.

5. the sensing metal grill of contact panel as claimed in claim 1, wherein the second grid segment have more multiple second grid nodes and multiple second breaks；Second grid node corresponds to second reference mode, centered on second reference mode, person can be at random selected in offset area in this；Second break corresponds to second reference point, centered on second reference point, person can be at random selected in offset area in this；Wherein the second grid segment is to connect all adjacent second grid nodes in second plane to be formed with second break.

6. the sensing metal grill of contact panel as claimed in claim 1, wherein this can offset area be one of to be constituted in border circular areas or on a circumference with a predetermined radii value, wherein the scope of the predetermined radii value between wantonly two adjacent first reference modes spacing or wantonly two the second adjacent reference mode spacing 1/8th to 21 percent.

7. the sensing metal grill of contact panel as claimed in claim 6, the wherein scope of the predetermined radii value between wantonly two adjacent first reference modes spacing or wantonly two the second adjacent reference mode spacing 1/10th to 1 percent.

8. the sensing metal grill of contact panel as claimed in claim 1, wherein this can offset area be in the annular region constituted with one first predetermined radii value and one second predetermined radii value or on two circumference, the scope of the first predetermined radii value and the second predetermined radii value is between 1/8th to 21 percent for wantonly two adjacent the first reference mode spacing or wantonly two the second adjacent reference mode spacing, and the first predetermined radii value is more than the second predetermined radii value.

9. the sensing metal grill of contact panel as claimed in claim 8, the wherein scope of the first predetermined radii value between wantonly two adjacent first reference modes spacing or wantonly two the second adjacent reference mode spacing 1/10th to 1 percent.

10. a kind of contact panel sensing metal grill preparation method, comprising step：

A (), in multiple first reference modes and multiple first reference points is defined in one first plane, wherein the plurality of first reference mode is regularly arranged, the plurality of first reference point is respectively arranged at the middle of wantonly two adjacent first reference modes；

B () is in defining multiple second reference modes and multiple second reference points in one second plane, wherein the plurality of second reference mode is regularly arranged, and be staggered with the upright projection of the plurality of first reference mode, and the plurality of first reference point is identical with the upright projection of the plurality of second reference point；

C () centered on first reference point, one first break can be at random selected in one by each in offset area；And

D () connects all adjacent first reference modes and first break, to be constituted one first grid segment of the sensing metal grill in first plane.

The preparation method of the sensing metal grill of 11. contact panels as claimed in claim 10, it further includes step：

E (), can be in offset area in this by each centered on second reference point, selected one second break at random；And

F () connects all adjacent second reference modes and second break, to form one second grid segment of the sensing metal grill in second plane.