TWM461835U - Touch panel - Google Patents

Abstract

A touch panel, having a transparent touch sensing region and a peripheral region adjacent to at least one side of the transparent touch sensing region, includes a substrate, a patterned decoration frame, a decoration layer, and at least a touch sensor. The patterned decoration frame is disposed on a surface of the substrate and in the peripheral region. The decoration layer is disposed on the patterned decoration frame. The touch sensor is disposed in the transparent touch sensing region.

Description

Touch panel

The present invention relates to a touch panel, and more particularly to a touch panel having a three-dimensional texture frame.

Touch panels have been widely used in smart phones, GPS navigator systems, tablet PCs, personal digital assistants (PDAs), and notebook computers due to their human-computer interaction. (laptop PC) and other electronic products.

The surface frame of the conventional touch panel is mostly monochromatic, and has no stereoscopic effect and lacks variation. The reason is that when the conventional touch panel is made of a carrier and colored particles, the colored particles easily block the nozzle during the process. And it is prone to the problem that the colored particles cannot be uniformly distributed, resulting in poor mixing effect. Furthermore, the optical density (OD) of the touch panel outer frame made by the above method is generally small, so that the metal wires of the touch panel cannot be effectively shielded, which is inconsistent with market demand. Therefore, the outer frame of the conventional touch panel can only be limited to a dark or monochrome design, and how to make a touch panel with a beautiful and versatile outer frame by a simple process is still a problem that the industry has to work hard.

One of the main purposes of the present invention is to provide a touch panel that includes a patterned decorative frame to increase the stereoscopic texture of the outer surface of the touch panel to improve the variability of the appearance of the touch panel.

To achieve the above objective, the present disclosure discloses a touch panel having a transparent touch sensing area and a surrounding area on at least one side of the transparent touch sensing area. The touch panel of the present invention comprises a substrate, a patterned decorative frame, a decorative layer and at least one touch sensing element. The patterned decorative frame is disposed on one surface of the substrate and located in the surrounding area, and the decorative layer is disposed on the patterned decorative frame, and The touch sensing component is disposed in the transparent touch sensing area.

10, 10', 10"‧‧‧ touch panels

100‧‧‧ touch panel

12‧‧‧Light touch sensing area

14‧‧‧ surrounding area

16‧‧‧Substrate

16a, 16b‧‧‧ surface

18‧‧‧ Buffer layer

20‧‧‧ inside frame

201‧‧‧First inner frame

202‧‧‧Second inner frame

24‧‧‧Bridge structure

26‧‧‧Touch sensing components

26a, 26c‧‧‧ touch sensing electrodes

26b, 26d‧‧‧ wiring

26X‧‧‧first axial electrode

26Y‧‧‧second axial electrode

28‧‧‧Touch sensing layer

30‧‧‧ patterned decorative frame

30a‧‧‧ patterned decorative frame rim

30b‧‧‧ patterned holes

32‧‧‧First decorative layer

32a‧‧‧First decorative side wall

34‧‧‧Second decorative layer

34a‧‧‧Second decorative side wall

36‧‧‧ Third decorative layer

38‧‧‧Decorative layer

38a‧‧‧Decorative side wall

40‧‧‧Black matrix layer

42‧‧‧Insulation

44‧‧‧ wire

46‧‧‧First protective layer

48‧‧‧Second protective layer

50‧‧‧Front frame

52‧‧‧ anisotropic conductive adhesive

54‧‧‧Soft printed circuit board

56, 58, 60‧‧‧ functional holes

56a‧‧‧Functional hole diameter

62‧‧‧Contact hole

64‧‧‧Touch substrate

66‧‧‧Protective layer

D1‧‧‧ Decorative layer slope drop

D2, D3‧‧‧ wire and substrate surface distance

SP1‧‧‧ touch sensing electrode

T30‧‧‧patterned decorative frame thickness

T38, T38'‧‧‧ decorative layer thickness

X‧‧‧ horizontal direction

Y‧‧‧Vertical direction

Z‧‧‧Vertical projection direction

FIG. 1 is a top plan view of a first embodiment of the creative touch panel.

FIG. 2 is a partial cross-sectional view showing the first embodiment of the creative touch panel.

3 to 4 are schematic views showing a process of the first embodiment of the creative touch panel.

Figure 5 is an enlarged schematic view of a portion of the surrounding area of the touch panel of the first drawing.

Fig. 6 is a schematic cross-sectional view of the region shown in Fig. 5 along the tangential line 6-6'.

FIG. 7 is a schematic top view of the second embodiment of the creative touch panel.

FIG. 8 is a partial cross-sectional view showing a third embodiment of the creative touch panel.

FIG. 9 is a partial cross-sectional view showing the fourth embodiment of the creative touch panel.

FIG. 10 is a partial cross-sectional view showing the fifth embodiment of the creative touch panel.

In order to make the present invention more familiar to those skilled in the art to which the present invention pertains, a number of preferred embodiments of the present invention are listed below, and the composition of the present invention is described in detail in conjunction with the drawings.

Please refer to FIG. 1 and FIG. 2 . FIG. 1 is a schematic plan view of a first embodiment of the touch panel. FIG. 2 is a partial cross-sectional view showing the first embodiment of the touch panel. In order to make the drawing simply show the main technical features of the creation, FIG. 1 only shows some components of the touch panel. As shown in FIG. 1 and FIG. 2 , the touch panel 10 has a transparent touch sensing area 12 and a surrounding area 14 . The surrounding area 14 is located on at least one side of the transparent touch sensing area 12. The surrounding area 14 of the present embodiment surrounds the periphery of the transparent touch sensing area 12, but the present invention is not limited thereto, and the surrounding area 14 may be disposed adjacent to only a part of the edge of the transparent touch sensing area 12. . In addition, the surrounding area 14 is optionally provided with a touch sensing element (not shown), but for the convenience of the following description, it is still divided into the surrounding area 14, which will be described first. The touch panel 10 includes a substrate 16 and a patterned decorative frame. 30 and a decorative layer 38, wherein the patterned decorative frame 30 is disposed on the surface 16a of the substrate 16 and located in the surrounding area 14, and the decorative layer 38 is disposed on the surface of the patterned decorative frame 30, and the decorative layer 38 is exposed. The outer edge 30a of the decorative frame 30 is patterned. Referring to FIGS. 5 and 6, the patterned decorative frame 30 includes at least one patterned hole 30b exposing a surface 16a of a portion of the substrate 16. In the present embodiment, the patterned decorative frame 30 includes a plurality of patterned holes 30b. Evenly distributed in the patterned decorative frame 30, a portion of the decorative layer 38 provided on the surface of the patterned decorative frame 30 is filled in the patterned hole 30b, so that the decorative layer 38 has a surface that is not completely flat, for example, has a wave shape surface. The structure in which the decorative layer 38 is filled in the patterned hole 30b will be described later with reference to Figures 5 to 6. In the embodiment, the patterned holes 30b are exemplified by a circle, but the patterned holes 30b may be various geometric patterns, irregular patterns or designed patterns, and are not limited to being uniformly distributed in the patterned decorative frame 30. Further, the patterned decorative frame 30 does not have to be covered with the entire surrounding area 14 as shown in FIG. 1, or may be disposed only on a part of the surrounding area 14. Furthermore, the pattern of the patterned decorative frame 30 does not have to be covered with the entire decorative frame, or may be disposed only on a part of the decorative frame. The decorative layer 38 has a different color from the patterned decorative frame 30. For example, the patterned decorative frame 30 of the present embodiment may be composed of pearl white ink, and the decorative layer 38 is composed of white ink, but this is not Limit, the two colors can be reversed. In various embodiments, the patterned decorative frame 30 and the decorative layer 38 may comprise colors of different color systems (eg, blue and yellow are different colors) or colors of the same color (eg, red and pink are the same color, white) It is the same color as pearl white, but it is better to distinguish the difference between the two colors by the naked eye. In the preferred embodiment, only one of the patterned decorative frame 30 and the decorative layer 38 has a pearl color or metallic luster to distinguish it more distinctly from the other and present a three-dimensional effect. Since the portion of the decorative layer 38 is filled in the patterned hole 30b, the decorative layer 38 in the patterned decorative frame 30 and the patterned hole 30a can be simultaneously seen by the front side of the touch panel 10 (ie, the surface 16b of the substrate 16). The pattern of the surrounding area 14 is richer in color and gives a three-dimensional effect. It should be noted that the touch panel 10 can optionally further include at least one functional hole defined in the surrounding area 14, such as the functional holes 56, 58, 60 shown in FIG. 1, wherein the functional holes of the embodiment 56, 58 are used to indicate the touch buttons of the surrounding area 14, and the functional holes 60 may have a product logo pattern, but are not limited thereto. The functional hole can also be a sensing hole, an indicator hole, or the like of the infrared sensor. In order to avoid that the patterned holes 30b have an incomplete pattern at the functional holes 56, 58, 60, there is preferably no pattern around the functional holes 56, 58, 60 and around the functional holes 56, 58, 60. The hole 30b, particularly when the diameter 56a of the pattern of the functional holes 56, 58, 60 is smaller than the size of the patterned hole 30b. Furthermore, in order to avoid overlapping or partial overlap of the patterned holes 30b with the functional holes 56, 58, 60 due to printing tolerances, in a preferred embodiment, the patterned holes 30b and the functional holes 56, 58 may be designed. 60 has a distance of from about 50 to 350 microns. Specifically, the functional apertures 56, 58, 60 of the present embodiment are defined by the decorative layer 38, and the patterned decorative frame 30 defines a slightly larger than functional aperture 56 at the corresponding functional apertures 56, 58, 60, respectively. , the area of 58, 60, and the patterned hole 30b is not disposed in the area. Of course, the present invention is not limited thereto. In other embodiments, the patterned decorative frame 30 may also completely cover the area of at least one functional hole, that is, the patterned hole 30b is disposed in the area, for example, patterned decoration. The frame 30 can completely cover the functional holes 56, 58, that is, the touch buttons, so that when the backlight is turned off, the touch buttons are not easily seen, and the touch buttons are clearly seen when the backlight is turned on.

The decorative layer 38 of the present embodiment includes a first decorative layer 32, a second decorative layer 34, and a third decorative layer 36 sequentially disposed on the patterned decorative frame 38, and the first decorative layer 32, the second decorative layer 34, and the first The three decorative layers 36 preferably have the same color or have the same color, for example, all of which are composed of the same white ink, but are not limited thereto. In this embodiment, the area of the second decorative layer 34 is slightly smaller than the area of the first decorative layer 32, and the area of the third decorative layer 36 is slightly larger than the area of the second decorative layer 34 but slightly smaller than the area of the first decorative layer 32. Therefore, the third decorative layer 36 covers the sidewall 34a of the second decorative layer 34 and covers at least a portion of the sidewall 32a of the first decorative layer 32, but exposes the outer edge of the first decorative layer 32, but is not limited thereto. . In other embodiments, the areas of the first decorative layer 32, the second decorative layer 34, and the third decorative layer 36 may be gradually reduced, that is, the first decorative layer 32, the second decorative layer 34, and the third decorative layer 36. The pyramids are stacked in a stepped manner. In addition, the touch panel 10 further includes at least one touch sensing element 26 disposed on the surface 16 a of the substrate 16 of the transparent touch sensing area 12 . In a preferred embodiment, the touch sensing element 26 can include a first axis that is insulated from each other and disposed across each other. To the electrode 26X and the second axial electrode 26Y, wherein the first axial electrode 26X and the second axial electrode 26Y respectively extend in different directions, for example, respectively, extending along the horizontal direction X and the vertical direction Y in FIG. 1 and Perpendicular to each other. The first axial electrode 26X and the second axial electrode 26Y respectively include a plurality of touch sensing electrodes 26a and 26c connected in series. The touch sensing electrodes 26a and 26c are evenly arranged in the transparent touch sensing area 12, and are connected in series by wires 26b and 26d, respectively, to achieve the desired touch sensing effect. Here, the wire 26b of Fig. 1 is constituted by the bridge structure 24 in Fig. 2 . The shape of the touch sensing electrodes 26a, 26c can be designed as needed, for example, a diamond electrode or a polygonal electrode, but is not limited thereto. The touch sensing element 26 may include a transparent conductive material such as indium tin oxide, zinc indium oxide, nano silver wire, carbon nanotubes, graphene, conductive polymer, and the like. One portion of the touch sensing element 26 extends over the peripheral area 14 and is disposed between the patterned decorative frame 30 and the substrate 16, that is, the patterned decorative frame 30 covers a portion of the surface of the touch sensing element 26 in the vertical projection direction Z. In addition, the touch panel 10 can optionally include a light shielding layer. In this embodiment, the black matrix layer 40 is disposed on the surface of the decorative layer 38. The touch panel 10 further includes at least one wire 44 disposed on the decorative layer 38 and the black matrix. The layer 40 extends downward along the sidewall 38a of the decorative layer 38, covering the sidewall 38a to contact the touch sensing element 26 of the surrounding region 14 and electrically connecting the touch sensing element 26. It should be noted that the wire 44 and the bridge structure 24 may be composed of the same material layer, for example, including a metal material having better conductivity.

Moreover, the touch panel 10 can optionally include an inner frame 20 disposed on the surface 16a of the substrate 16 and located inside the peripheral region 14. In the preferred embodiment, the inner edge of the inner frame 20 is along the surrounding area. 14 is disposed on the inner side, at least a portion of the inner frame 20 is disposed between the patterned decorative frame 30 and the substrate 16, and the touch sensing element 26 located in the surrounding area 14 partially covers the surface of the inner frame 20. Under this design, the inner frame 20 and the black matrix layer 40 can shield the wires 44 of the surrounding area 14 , and the inner frame 20 can cover the uneven edges of the decorative layer 38 and the patterned decorative frame 30 due to manufacturing tolerances or stacking design. Avoid translucency problems. Therefore, the inner frame 20 of the present embodiment is preferably a light shielding layer having a high optical density, for example, may be made of the same material as the black matrix layer 40, or may be a multi-layer structure and include a black matrix layer 40, but not Limited to this. However, in other embodiments, the inner frame may not be set. 20. The inner side of the surrounding area 14 has a special pattern effect by exposing the inner edge of the patterned decorative frame 30 or the decorative layer 38. In addition, the touch panel 10 may optionally include a buffer layer 18 covering the surface 16a of the substrate 16 in a comprehensive manner, and the material thereof is cerium oxide. The touch panel 10 can optionally include an insulating layer 42. The insulating layer 42 in the surrounding area 14 is disposed between the black matrix layer 40 and the decorative layer 38 and the wires 44. The insulation in the transparent touch sensing area 12 is The layer 42 is disposed between the touch sensing electrode 26a and the wiring 26d to insulate the first axial electrode 26X from the second axial electrode 26Y. Furthermore, the first protective layer 46 and the second protective layer 48 may be selectively disposed on the surface of the wire 44 and the touch sensing element 26 to provide protection and increase the flatness. The material of the first protective layer 46 is exemplified by ceria, tantalum nitride or a combination of the two, and thus can be used as an optical matching in addition to the protective effect. The material of the insulating layer 42 and the second protective layer 48 includes, for example, an organic insulating material, wherein the second protective layer 48 can extend to cover the light transmission in other embodiments, in addition to protecting the components on the peripheral region 14. The touch sensing area 12, that is, the second protective layer 48, can be selectively covered. Moreover, the insulating layer 42 and the second protective layer 48 are not limited to an organic insulating material, and may be an inorganic insulating material such as yttrium oxide. In addition, the touch panel 10 can include an anisotropic conductive paste 52 and a flexible printed circuit board 54 electrically connected to the wires 44 for transmitting the touch sensing signals.

On the other hand, the touch panel 10 may include an outer frame 50 disposed on the outer side of the surrounding area 14 and partially covering at least one of the decorative layer 38 or the patterned decorative frame 30 in the vertical direction Z, but not limited thereto. It can also be fully covered. The outer frame 50 may have the same color as the patterned decorative frame 30, or may have the same color as the decorative layer 38 to improve the problem of transparent colorlessness or color unevenness on the outer side of the surrounding area 14, but is not limited thereto. In other embodiments, the outer frame 50 may be different from the colors of the patterned decorative frame 30 and the decorative layer 38 to further increase the richness of the surface color of the surrounding area 14 of the touch panel 10. In addition, the outer frame 50 may include one or more layers of ink, for example, including a first outer frame layer and a second outer frame layer, wherein the first outer frame layer and the patterned decorative frame 30 are made of the same material, and also have patterned holes. The second outer frame layer is made of the same material as the decorative layer 38, so that the outer frame 50 also has a three-dimensional texture. It should be noted that when the touch panel 10 of the embodiment is fabricated, the touch sensing element 26, the patterned decorative frame 30, and the decorative layer 38 can be formed on the large substrate. After the main film layer, the substrate is cut into a substrate 16 having the size of the touch panel 10, and then the outer frame 50 is formed to fill the outer side of the substrate 16 and the side wall of the substrate 16. If the film layer elements of the touch panel 10 are directly formed on the surface of the diced substrate 16, the fabrication of the outer frame 50 may be omitted.

For the method of fabricating the first embodiment of the touch panel 10, please refer to FIGS. 3 to 4. First, as shown in FIG. 3, the substrate 16 is first provided, and the transparent touch sensing area 12 and the surrounding area 14 are defined on the substrate 16, and then the buffer layer 18 is selectively formed on the surface of the substrate 16 in the surrounding area. An inner frame 20 is formed on the surface of the substrate 16 , and at least one touch sensing layer 28 is formed on the surface 16 a of the substrate 16 . The patterns of the touch sensing electrodes 26 a , 26 c and 26 d can be defined through one to several yellow light processes. The light-sensitive touch sensing area 12 is disposed, and a portion of the touch sensing layer 28 (ie, at least a portion of the touch sensing element 26) extends to the surrounding area 14 to cover a portion of the inner frame 20. Next, referring to FIG. 4, a patterned decorative frame 30, a decorative layer 38, and a black matrix layer 40 are formed on the substrate 16 of the surrounding area 14, wherein the patterned decorative frame 30 covers one part of the touch sensing layer 28, and is decorated. The layer 38 covers a portion of the patterned decorative frame 30 and may optionally include a first decorative layer 32, a second decorative layer 34, and a third decorative layer 36. The inner frame 20, the patterned decorative frame 30, the decorative layer 38, and the black matrix layer 40 may be fabricated by screen printing, lithography, inkjet, or coating.

Referring again to FIG. 2, a patterned insulating layer 42 is formed, covering a portion of the wiring 26d, the touch sensing electrode 26a, and the black matrix layer 40, and then forming a patterned conductive layer including the wires 44 and the bridge structure 24 ( The wire is disposed on the decorative layer 38 and covers the side wall 38a of the decorative layer 38 and is connected to the touch sensing layer 28. The bridge structure 24 is disposed on the transparent touch sensing area 12, and the electrical connection part touch sensing layer 28. Then, the first protective layer 46 and the second protective layer 48 are selectively formed on the surface of the substrate 16 to cover the patterned decorative frame 30 and the decorative layer 38, and the first protective layer 46 further covers the touch sensing layer 28 and includes The conductive structure of the bridge structure 24 and the wires 44 is covered, and the second protective layer 48 covers the partial bridge structure 24. Furthermore, a contact hole 62 may be formed in the first protective layer 46 and the second protective layer 48 to expose a portion of the wire 44 and transmit a conductive material, such as an anisotropic conductive paste 52, to electrically connect to the flexible printed circuit board. 54.

According to the first embodiment of the present creation, since the process temperature is first made, it may reach 300 ° C. Touching the sensing layer 28, and then patterning the decorative frame 30 and the decorative layer 38, so even if the ink material of the decorative decorative frame 30 and the decorative layer 38 can only withstand temperatures of 200 ° C to 250 ° C, but because of other films or The wire process can be carried out at a lower temperature, for example 200 ° C, thus slowing the discoloration of the previously produced ink and affecting the appearance.

Please refer to FIG. 5 to FIG. 6 . FIG. 5 is an enlarged schematic view of a portion of the surrounding area 14 of the touch panel 10 in FIG. 1 , and FIG. 6 is a cross-sectional view of the area shown in FIG. A schematic cross-sectional view of the pattern, and only the cross-sectional shape of the patterned decorative frame 30, the decorative layer 38, the black matrix layer 40, and the wires 44 are depicted, ignoring the buffer layer 18. As shown in FIGS. 5 and 6, the patterned decorative frame 30 has a thickness T30 at a portion where the patterned hole 30b is not formed, and the patterned hole 30b exposes the substrate 16. One of the decorative layers 38 is partially filled in the patterned holes 30b, so the decorative layer 38 has an uneven surface, such as a wavy surface. However, it is worth noting that the thickness T38 of the decorative layer 38 in the patterned hole 30b is slightly larger than the thickness T38' of the decorative layer 38 provided on the surface of the patterned decorative frame 30, that is, the gradient D1 of the decorative layer 38 is smaller than The thickness T30 of the decorative frame 30 is patterned. The black matrix layer 40 and the wires 44 are sequentially stacked on the surface of the decorative layer 38. Therefore, the surface of the wires 44 provided at the patterned holes 30b has a distance D2 from the surface 16a of the substrate 16, and the wires are disposed outside the patterned holes 30b. The surface 44 has a distance D3 from the substrate 16, and the distance D2 is smaller than the distance D3.

The touch panel of the present invention and the manufacturing method thereof are not limited to the above embodiments. The other embodiments of the present invention will be further described below, and the same reference numerals will be used to refer to the same elements in the following description, and the repeated description will not be repeated.

Please refer to FIG. 7 , which is a top view of the second embodiment of the touch panel. For the sake of simplicity, the figure only shows the touch sensing electrode 26 and the wire 44 . As shown in FIG. 7 , the difference between the second embodiment and the first embodiment is that the touch sensing element 26 of the touch panel 10 ′ includes a plurality of touch sensing electrodes SP1 separated from each other and disposed on the transparent touch. In the sensing area 12. The wire 44 is connected to the touch sensing electrode SP1, and a portion of the touch sensing electrode SP1 can extend to the surrounding area 14 to be electrically connected to the wire 44. In addition to the touch sensing electrode SP1 of the touch panel 10' of the present embodiment, the features, arrangement positions, and material characteristics of the remaining components are the same as those of the first embodiment. Like, so I won't go into details here. It should be noted that the touch sensing electrodes SP1 of the present embodiment are preferably triangular electrodes, but the present invention is not limited thereto, and the touch sensing electrodes SP1 of different shapes may be uniformly arranged and distributed in the transparent touch. The sensing area 12 is used to achieve the desired touch sensing detection effect. In addition, the touch sensing electrode SP1 may include, for example, a transparent conductive material such as indium tin oxide or a metal mesh material. In other embodiments, the touch sensing electrode SP1 may also be a plurality of rectangular touch sensing electrodes disposed separately from each other. However, the present invention is not limited thereto, and the touch sensing electrodes of other rules or irregular shapes may be uniformly arranged in the transparent touch sensing area 12, for example, a plurality of strip-shaped touch sensing electrodes are matched with a plurality of A block-shaped touch sensing electrode between two adjacent strip-shaped touch sensing electrodes is used to achieve the desired touch sensing effect.

Please refer to FIG. 8. FIG. 8 is a partial cross-sectional view showing a third embodiment of the touch panel. The difference between this embodiment and the first embodiment is that the inner frame 20 includes a first inner frame layer 201 and a second inner frame layer 202 which are sequentially stacked on the surface 16a of the substrate 16. When the inner frame 20 is light in color or has a low optical density, it is preferable to use two or more inner frame layers to effectively shield the wires 44 on the rear side thereof from the edges of the patterned decorative frame 30 and the decorative layer 38. In this embodiment, the area of the second inner frame layer 202 is slightly smaller than that of the first inner frame layer 201, that is, the inner frame 20 has a stepped shape in a stepped shape, so that the touch sensing layer 28 can have a better climb. Slope structure, but not limited to this. In other embodiments, the area of the first inner frame layer 201 and the second inner frame layer 202 may be differently combined. For example, the second inner frame layer 202 may cover the sidewall of the first inner frame layer 201.

Please refer to FIG. 9. FIG. 9 is a partial cross-sectional view showing the fourth embodiment of the touch panel. The difference between this embodiment and the first embodiment is that the portion of the touch sensing element 26 extending from the surrounding area 12 covers one side wall 38a of the decorative layer 38, that is, partially covering the decorative layer 38 and the pattern in the vertical projection direction Z. The decorative frame 30 is electrically connected to the wire 44 provided on the decorative layer 38 and the black matrix layer 40. Therefore, after the bridge structure 24 and the inner frame 20 are formed, the patterning decorative frame 30, the decorative layer 38, the black matrix layer 40, and the insulating layer 42 are sequentially formed, and then the touch sensing layer 28 is formed. Where a portion of the touch sensing layer 28 is disposed in black The matrix layer 40 is attached to the subsequently produced wire 44. In this embodiment, the patterned decorative frame 30 and the decorative layer 38 are preferably made of an ink that can withstand high temperatures, or a temperature that can be withstood by photoresist or ink after the patterned decorative frame 30 and the decorative layer 38 are formed. Condition or lower temperature process to make subsequent material layers.

Please refer to FIG. 10 , which is a partial cross-sectional view showing a fifth embodiment of the touch panel. In this embodiment, the touch panel 100 further includes a touch substrate 64 disposed on the upper side of the substrate 16 , and the touch sensing element 26 is disposed on the lower surface of the touch substrate 64 , but is not limited thereto, and the touch sensing element is 26 may also be disposed on the upper surface of the touch substrate 64. For the shape and arrangement of the touch sensing element 26, for example, reference may be made to the first and second embodiments, and details are not described herein, but are not limited thereto. The surface of the touch substrate 64 is further provided with at least one wire 44 electrically connected to the touch sensing element 26 , and the wire 44 and the touch sensing element 26 are covered with a protective layer 46 . The stacking order and structure of the inner frame 20, the patterned decorative frame 30, the decorative layer 38, and the black matrix layer 40 of the present embodiment are similar to those of the foregoing embodiments, and are not described herein. It should be noted that when the decorative layer 38 is made of a material having a higher optical density, only one or two decorative layers 38 may be included, and thus the inner frame 20 may be omitted. In addition, the surface of the substrate 16 may be selectively provided with the outer frame 50 on the outer side of the peripheral region 14. If the decorative frame and the decorative layer are not formed after the substrate 16 is cut, the outer frame 50 may be omitted directly, and the decorative frame 30 or the decorative layer 38 may be directly extended to cover the outer side of the surrounding area 14.

It should be noted that the materials of the substrate and the touch substrate mentioned in the foregoing embodiments include a glass substrate, a plastic substrate or a soft film, and the material of the soft film is, for example, polyethylene terephthalate. (polyethylene terephthalate, PET) film. Therefore, the touch panel of the present embodiment can be applied to the case where the touch sensing element and the patterned decorative frame are simultaneously disposed on the substrate (for example, a single-chip glass capacitive touch panel) or the two are respectively disposed on different substrates, in the latter case. The substrate and the touch substrate may be rigid substrates or flexible films, respectively, but are not limited thereto, and may be soft films, and may be selectively combined with a rigid substrate.

It can be seen from the above that the touch panel of the present invention uses a combination of patterned decorative frames and decorative layers of different colors, and can provide a stacking structure with a three-dimensional texture of the touch panel in the surrounding area, which can be increased. Adding the design sense and color richness of the touch panel surface to achieve the effect of beautifying the touch panel frame.

10‧‧‧Touch panel

12‧‧‧Light touch sensing area

14‧‧‧ surrounding area

16‧‧‧Substrate

16a, 16b‧‧‧ surface

18‧‧‧ Buffer layer

20‧‧‧ inside frame

24‧‧‧Bridge structure

26‧‧‧Touch sensing components

26a‧‧‧Touch sensing electrode

26b, 26d‧‧‧ wiring

28‧‧‧Touch sensing layer

30‧‧‧ patterned decorative frame

30a‧‧‧ patterned decorative frame rim

32‧‧‧First decorative layer

32a‧‧‧First decorative side wall

34‧‧‧Second decorative layer

34a‧‧‧Second decorative side wall

36‧‧‧ Third decorative layer

38‧‧‧Decorative layer

38a‧‧‧Decorative side wall

40‧‧‧Black matrix layer

42‧‧‧Insulation

44‧‧‧ wire

46‧‧‧First protective layer

48‧‧‧Second protective layer

50‧‧‧Front frame

52‧‧‧ anisotropic conductive adhesive

54‧‧‧Soft printed circuit board

62‧‧‧Contact hole

Z‧‧‧Vertical projection direction

Claims (21)

A touch panel has a transparent touch sensing area and a surrounding area on at least one side of the transparent touch sensing area. The touch panel includes: a substrate having a surface; and a patterned decorative frame. The surface of the substrate is disposed on the surface of the substrate; a decorative layer is disposed on the patterned decorative frame; and at least one touch sensing element is disposed on the transparent touch sensing area. The touch panel of claim 1, wherein the decorative layer has a different color from the patterned decorative frame. The touch panel of claim 1, wherein the patterned decorative frame comprises at least one patterned hole exposing a portion of the surface of the substrate, and one of the decorative layers is partially filled in the patterned hole. The touch panel of claim 3, wherein the touch sensing component is disposed on the surface of the substrate, and a portion of the touch sensing component extends in the surrounding area and is disposed on the patterned decorative frame. Between the substrates. The touch panel of claim 4, further comprising a wire electrically connected to the touch sensing element, and the wire is disposed on the decorative layer and covering a sidewall of the decorative layer. The touch panel of claim 5, wherein a portion of the wire disposed on the patterned hole is different from a surface of the substrate than a portion of the wire disposed outside the patterned hole and the substrate The distance from the surface. The touch panel of claim 1, wherein the touch sensing element is disposed on the substrate And a portion of the touch sensing element extends over the surrounding area and covers a sidewall of the decorative layer. The touch panel of claim 7, further comprising a wire disposed on the decorative layer and electrically connected to the touch sensing element. The touch panel of claim 1 further comprising a touch substrate disposed on an upper side of the substrate, and the touch sensing element is disposed on a surface of the touch substrate. The touch panel of claim 1, further comprising an inner frame disposed on the surface of the substrate and located in the surrounding area, at least a portion of the inner frame being disposed between the patterned decorative frame and the substrate. The touch panel of claim 10, wherein the inner frame comprises a black matrix layer. The touch panel of claim 10, wherein the inner frame comprises a first inner frame layer and a second inner frame layer, which are sequentially stacked on the surface. The touch panel of claim 1, wherein the decorative layer comprises a first decorative layer, a second decorative layer and a third decorative layer sequentially disposed on the surface of the substrate, wherein the third decorative layer Covering the sidewall of the second decorative layer and covering at least a portion of the sidewall of the first decorative layer. The touch panel of claim 1, wherein the decorative layer exposes an outer edge of the patterned decorative frame. The touch panel of claim 1, further comprising an outer frame disposed on the surface of the substrate in the surrounding area, covering at least one of the patterned decorative frame and the decorative layer. The touch panel of claim 15, wherein the outer frame has the same color as the patterned decorative frame. The touch panel of claim 15, wherein the outer frame has the same color as the decorative layer. The touch panel of claim 1, further comprising: a light shielding layer disposed on the decorative layer; and a protective layer covering the decorative layer and the patterned decorative frame. The touch panel of claim 1, wherein the patterned decorative frame comprises a plurality of patterned holes uniformly distributed in the patterned decorative frame and exposing a portion of the substrate. The touch panel of claim 19, further comprising at least one functional hole defined in the surrounding area, wherein the patterned decorative frame does not have the patterned holes around the functional hole and the functional hole . The touch panel of claim 1, further comprising at least one functional hole defined in the surrounding area.