TWI582660B - A touch panel that eliminates the Murray effect - Google Patents

Description

Touch panel capable of eliminating the Murray effect

A touch panel, in particular, a touch panel capable of eliminating the Murray effect.

At present, the touch technology has been widely applied to various electronic product display devices, so that the user can control the operation of the electronic product by using a touch control method. In order to make the electrodes of the touch area difficult to be visually recognized, indium tin oxide (ITO) is usually used to form a transparent electrode. However, as the application of the touch panel gradually develops toward a large size, the technology of using an indium tin oxide transparent electrode has technical problems such as large resistance, slow touch response speed, multiple process steps, and high production cost. Therefore, the metal mesh (Metal Mesh) sensing electrode was developed to replace the indium tin oxide transparent electrode.

However, when the metal grid of the touch panel is applied to the display panel, a so-called interference pattern (Moire) is easily generated, which affects the display quality of the screen. The generation of the interference fringes is mainly caused by the shape of the metal mesh pattern, and when the adjacent stripe patterns are regularly arranged with each other, optical interference fringes are generated. Further, when the line width of the metal mesh is thicker, or the adjacent stripes are overlapped or intersected to increase the thickness of the stripe patterns with each other, interference fringes are likely to 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 (TFT array) of the display panel (such as black matrix or RGB) The pixel arrangement is also arranged in a regular grid pattern, so that optical interference lines are also generated when the patterns of the two regular grids are overlapped.

In order to avoid or reduce the occurrence of interference fringes, the pattern and line shape of the metal grid of the touch panel are generally arranged according to the thin film transistor array of the display panel, and are designed to be staggered and regular by a plurality of linear metal microwires. The arrangement is structured to form a grid pattern, thereby increasing visibility. For example, the metal mesh 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 the plurality of strips are arranged in parallel The linear first metal microwire and the plurality of linear second metal microwires are isolated from each other and staggered to form a touch array. However, the metal grid of the touch panel of the prior art must have a good fit with the thin film transistor array of the display panel to reduce the occurrence of interference fringes, and thus the space and interleaving between the plurality of linear metal microwires of the metal grid. The angle needs to be carefully designed, which causes design difficulties and is easy to reduce the visibility due to metal grid pattern design errors.

The main object of the present invention is to provide a touch panel capable of eliminating the Murray effect, which can reduce the occurrence of interference fringes by pattern design of a metal mesh, and can improve visibility.

In order to achieve the above objective, the specific technical means of the present invention includes a transparent substrate; at least one first sensing electrode is disposed on a first surface of the transparent substrate and extends along a first direction, the at least one first The sensing electrode includes a plurality of first metal grids; at least one second sensing electrode is disposed on a second surface of the transparent substrate and extends along a second direction, the first surface and the second surface need to be mutually Correspondingly, the at least one second sensing electrode comprises a plurality of second metal meshes; and wherein at least one of the first metal meshes or the second metal meshes is composed of at least a plurality of irregular polygons, The irregular polygons mainly contain plural irregularities The first metal mesh and the second metal mesh are vertically opposed to each other and interlaced with each other to form a staggered pattern.

According to the touch panel of the present invention, the Murray effect can be eliminated, and the interference pattern can be avoided after the touch panel and the display panel are attached without the arrangement of the thin film transistor array of the display panel.

100‧‧‧Touch panel that eliminates the Murray effect

10‧‧‧Transparent substrate

20‧‧‧First sensing electrode

30‧‧‧Second sensing electrode

40‧‧‧Metal mesh layer

201‧‧‧First Metal Grid

301‧‧‧Second metal grid

P‧‧‧ staggered pattern

X‧‧‧ first direction

Y‧‧‧second direction

The first figure is a schematic cross-sectional view of a touch panel capable of eliminating the Murray effect of the present invention.

The second A is a schematic diagram of an embodiment of the first sensing electrode of the present invention.

The second B is a schematic diagram of an embodiment of the second sensing electrode of the present invention.

The second C is a schematic perspective view of an embodiment of the first sensing electrode and the second sensing electrode disposed on the transparent substrate.

The third A is a schematic view of another embodiment of the second sensing electrode of the present invention.

FIG. 3B is a schematic perspective view showing another embodiment of the first sensing electrode of the second A diagram and the second sensing electrode of the third A diagram disposed on the transparent substrate.

Figure 4A is a side elevational view of the first embodiment of the metal mesh layer of the present invention.

Figure 4B is a side elevational view of a second embodiment of the metal mesh layer of the present invention.

Figure 4C is a side view of a third embodiment of the metal mesh layer of the present invention.

The fourth D is a side view of a fourth embodiment of the metal mesh layer of the present invention.

The embodiments of the present invention will be described in more detail below with reference to the drawings and the reference numerals, which can be implemented by those skilled in the art after having studied this specification.

Referring to the first figure, the cross-sectional view of the touch panel of the present invention can eliminate the Murray effect. As shown in the first figure, the touch panel 100 capable of eliminating the Murray effect of the present invention includes a transparent substrate 10, at least one An inductive electrode 20 and at least one second inductive electrode 30.

The transparent substrate 10 may be a rigid substrate or a flexible substrate; the material of the rigid substrate may be glass, tempered glass, sapphire, ceramic or other suitable materials; and the material of the flexible substrate may be a polymer material. The polymer material is, for example, polyethylene (PE), polypropylene (PP), polystyrene (PS), polymethyl methacrylate (PMMA), polyvinyl chloride (PVC), nylon (Nylon), polycarbonate. Ester (PC), polyurethane (PU), polytetrafluoroethylene (PTFE), polyethylene terephthalate (PET), polyimide (PI), acrylic resin or polymethyl A material such as a mixture of methyl acrylate and polycarbonate. The touch panel formed by using the flexible substrate may have flexibility, and thus is suitable for being coated on a flexible surface or any flexible object that requires a touch function, for example, a display panel and other suitable materials are formed. Flexible substrate.

Referring to FIG. 2A, FIG. 2A is a schematic diagram of an embodiment of a first sensing electrode of the present invention. Referring to FIG. 2B, FIG. 2B is a schematic diagram of an embodiment of a second sensing electrode of the present invention, and As shown in the first figure, the first sensing electrode 20 is disposed on the transparent substrate 10 and extends along a first direction X, and the first sensing electrode 20 includes a plurality of first metal meshes 201; The second sensing electrode 30 is disposed on the transparent substrate 10 and extends along a second direction Y, and the second sensing electrode 30 includes a plurality of second metal meshes 301. The first direction X is preferably substantially perpendicular to the second direction, but is not limited thereto.

The first sensing electrode 20 and the second sensing electrode 30 are respectively disposed on a first surface and a second surface of the transparent substrate 10, and the first surface and the second surface need to correspond to each other, such as each other. Corresponding to the upper surface and the lower surface, may also be disposed on different transparent substrates 10 The surface of the first sensing electrode 20 and the second sensing electrode 30 are in parallel with each other in a part or all of the surface of the first sensing electrode 20 and the second sensing electrode 30. Positioning, or setting the first sensing electrode 20 and the second sensing electrode 30 on a single or a plurality of substrates can achieve the object of the present invention.

In the first sensing electrode 20 of the embodiment, the first metal meshes 201 are connected to each other. In the second sensing electrode 30, the second metal meshes 301 are connected to each other.

Referring to the second A and second B, at least one of the first metal mesh 201 or the second metal mesh 301 is composed of at least a plurality of irregular polygons. Preferably, the The irregular polygon mainly includes a plurality of irregular hexagons. As shown in the second figure, the irregular hexagons are substantially different; it should be noted that the above irregular polygons are not limited to the irregular hexagons. The drawings are merely illustrative and are not intended to limit the scope of the invention, that is, as long as irregular polygons fall within the scope of the invention, such as irregular triangles, irregular quadrilaterals, Both regular pentagons and irregular polygons fall within the scope of the present invention.

Referring to FIG. 2C, FIG. 2C is a schematic perspective view of an embodiment of the first sensing electrode and the second sensing electrode disposed on the transparent substrate, and please cooperate with the first figure, the second A and the second B The first metal mesh 201 and the second metal mesh 301 are vertically opposed to each other and interlaced with each other to form a staggered pattern P, the staggered pattern including at least a plurality of Irregular trigonometry, complex irregular quadrilateral, complex irregular hexagon, or a combination thereof.

In an embodiment of the invention, the irregular polygons mainly comprise a plurality of irregular hexagons and a plurality of irregular pentagons.

Referring to FIG. 3A, FIG. 3A is another embodiment of the second sensing electrode of the present invention. For a schematic diagram of the embodiment, refer to the third B diagram. The third B is a schematic perspective view of another embodiment when the first sensing electrode of the second A diagram and the second sensing electrode of the third A diagram are disposed on the transparent substrate.

As shown in the third A to the third B, when one of the first metal mesh 201 or the second metal mesh 301 is composed of the irregular polygons, for example, the first A metal mesh 201 is in the form of a second A picture, and the other of the first metal mesh 201 or the second metal mesh 301 is a complex regular quadrangle, a complex irregular quadrilateral, and a complex regular hexagon. Or a plurality of irregular hexagons, here is exemplified by a plurality of irregular quadrangles, and the second sensing electrode 30 shown in FIG. 3A is a plurality of irregular quadrilaterals, and when the first sensing of the second A is performed The staggered pattern P formed by the electrode 201 and the second sensing electrode 301 of FIG. A is shown in FIG.

Referring to FIG. 4A, a side view of a first embodiment of a metal mesh layer of the present invention, see FIG. 4B, a side view of a second embodiment of the metal mesh layer of the present invention, see FIG. 4C, the present invention A side view of a third embodiment of a metal mesh layer, see the fourth D-figure, a side view of a fourth embodiment of the metal mesh layer of the present invention.

As shown in the fourth to fourth D, the present invention further includes a metal mesh layer 40 disposed on the first sensing electrode 20, wherein the metal mesh layer 40 is directly Configuring or indirectly disposed on the first sensing electrode 20, as shown in FIG. 4A and FIG. 4B; or the metal mesh layer 40 is disposed under the second sensing electrode 20, wherein the metal grid The layer 40 is directly disposed or indirectly disposed under the second sensing electrode 20, as shown in the fourth C diagram and the fourth D. The metal mesh layer 40 is composed of a plurality of irregular polygons.

Since the metal mesh layer 40 is composed of a metal wire, the high frequency signal can be effectively induced, and electromagnetic interference is effectively reduced. Furthermore, the metal mesh layer 40 is made of irregular polygons. The composition can also achieve the purpose of eliminating interference fringes.

One of the irregular polygons is a curved line segment or a straight line segment.

In summary, the present invention provides a touch panel capable of eliminating the Murray effect, which can reduce the occurrence of interference fringes by the pattern design of the metal mesh, and can improve the visibility. In this case, the touch panel capable of eliminating the Murray effect can avoid the occurrence of interference fringes after the touch panel and the display panel are attached without the arrangement of the thin film transistor array of the display panel.

Since the technology of the present invention is not found in published publications, periodicals, magazines, media, exhibition venues, and thus is novel, and can be implemented by breaking through the current technical bottlenecks, it is indeed progressive. In addition, the present invention can solve the problems of the conventional technology, improve the overall use efficiency, and can achieve the value of industrial utilization.

The above is only a preferred embodiment for explaining the present invention, and is not intended to limit the present invention in any way, and any modifications or alterations to the present invention made in the spirit of the same invention. All should still be included in the scope of the intention of the present invention.

100‧‧‧Touch panel that eliminates the Murray effect

201‧‧‧First Metal Grid

301‧‧‧Second metal grid

Claims (6)

A touch panel capable of eliminating the Murray effect, comprising: a transparent substrate; at least one first sensing electrode disposed on a first surface of the transparent substrate and extending along a first direction, the at least one An inductive electrode includes a plurality of first metal grids; at least one second sensing electrode is disposed on a second surface of the transparent substrate and extends along a second direction, the first surface and the second surface are required Corresponding to each other, the at least one second sensing electrode comprises a plurality of second metal meshes; and wherein at least one of the first metal meshes or the second metal meshes is composed of at least a plurality of irregular polygons The irregular polygons mainly include a plurality of irregular hexagons, and the first metal grids and the second metal grids are vertically opposed to each other and interlaced with each other to form a staggered pattern. Furthermore, the metal mesh layer is directly or indirectly disposed on the first sensing electrode or the second sensing electrode, wherein the metal mesh layer is composed of a plurality of irregular polygons. The touch panel capable of eliminating the Murray effect according to the first aspect of the patent application, wherein the transparent substrate is a rigid substrate or a flexible substrate. The touch panel capable of eliminating the Murray effect according to the first aspect of the patent application, wherein the irregular polygons mainly comprise a plurality of irregular hexagons and a plurality of irregular pentagons. The touch panel capable of eliminating the Murray effect according to claim 1, wherein one of the first metal meshes or the second metal meshes is surrounded by the irregular polygons In composition, the other of the first metal mesh or the second metal mesh is a complex regular quadrangle, a complex irregular quadrilateral, a complex regular hexagon or a complex irregular hexagon. A touch panel capable of eliminating the Murray effect according to the fourth aspect of the patent application, wherein one side of the irregular polygons is a curved line segment or a straight line segment. The touch panel capable of eliminating the Murray effect according to claim 1, wherein the interlaced pattern includes at least a plurality of irregular triangles, a plurality of irregular quadrilaterals, and a plurality of irregular hexagons.