CN102236445A - Composite sheet structure and cover mirror lamination structure for touch panel - Google Patents

Abstract

The invention provides a composite board structure and a cover mirror laminated structure for a touch panel. The composite board structure comprises a substrate, a microstructure layer and a shielding layer. The microstructure layer is formed on the substrate and is provided with a first side and a second side which are opposite, the microstructure layer comprises a plurality of prism microstructures, and the substrate is attached to the first side of the microstructure layer. The shielding layer is covered on the second side of the microstructure layer and comprises a low light transmission material.

Description

Composite sheet structure and cover mirror lamination structure for touch panel

technical field

The invention relates to a composite plate structure and a cover mirror lamination structure for a touch panel including the composite plate structure.

Background technique

The method of processing a plate to produce a special material visual effect usually includes ink printing, CNC processing, etching process, and UV molding (UV molding). Ink printing method can show flat texture effect but lacks three-dimensional effect. Although conductive vacuum metal coating (VM) or non-conductive vacuum metal coating (NCVM) can be used to replace ink to improve surface texture and show metallic luster, it still cannot obtain three-dimensional visual effect . The CNC machining method is to use metal ingots for processing operations, and mill out metal lines on the plate, but CNC processing is expensive and cannot be performed on glass or silicon crystal materials, and it is easy to reduce the consistency of the product due to tool wear. Furthermore, the etching method is to use etching potion and exposure technology to etch the specified material to produce a texture effect. Although the etching method can meet the requirements of precision and consistency, the environmental risk in the operation is relatively high and the operating cost is relatively high. expensive. In addition, UV molding is operated by embossing, using rollers or flat-dipping molds for embossing to produce texture effects, but currently this technology can only be formed on plastic acrylic or composite plastics, and cannot be formed on glass. Or implemented on silicon crystal material.

Contents of the invention

The present invention provides a composite plate structure, which can provide good metallic luster and texture effects and can avoid the disadvantages of the above known designs, and can be integrated on a cover mirror of a touch panel.

According to the design of an embodiment of the present invention, a composite board structure includes a substrate, a microstructure layer and a shielding layer. The microstructure layer is formed on the substrate and has a first side and a second side opposite to each other. The microstructure layer includes a plurality of prism microstructures and the substrate is attached to the first side of the microstructure layer. The shielding layer covers the second side of the microstructure layer, and the shielding layer includes a low light transmission material.

Through the design of this embodiment, the prism microstructure can reflect or refract incident light, so that the substrate with a smooth touch can produce prism lines with stereoscopic visual effect and metal texture and luster. Because the microstructure layer is formed and then bonded to the substrate, this can greatly reduce the risk of direct processing of the substrate, effectively improving the yield of the finished product, and when there is an error in the bonding process, the microstructure layer can be torn off and reworked, so that the substrate can be reused And has good heavy industry characteristics. Furthermore, the microstructure layer can simultaneously provide a light converging effect similar to Brightness Enhancement Film (BEF), and by adjusting the height, spacing, and arrangement of each prism microstructure, different textures can be provided and different metallic luster effects can be produced.

In one embodiment, the microstructure layer is made of photohardening or thermosetting material, and the prismatic microstructures are formed by embossing.

In one embodiment, the microstructure layer is made of metal material, and the prism microstructure is formed by holographic laser processing. Through the design of this embodiment, when light is irradiated on the holographic laser microstructure of the microstructure layer, phenomena such as refraction, scattering, and reflection can occur, and when the light passes through the holographic laser microstructure, abundant Color changes, so that it can produce the same luster as the metal texture or colorful glare, so that a transparent substrate can provide bright and eye-catching luster, texture and special visual effects.

According to the design of another embodiment of the present invention, a cover mirror laminated structure for a touch panel includes a transparent substrate, and a visible area laminated structure and a non-display laminated structure formed on the transparent substrate and adjacent to each other Region stacked structure. The layered structure of the visible area includes a sensing layer, an insulating bridge layer, a bridge wire, and a protective layer. The sensing layer is arranged on the transparent substrate, and the sensing layer includes a plurality of X-axis traces equidistantly distributed along the X-axis direction and arranged parallel to each other, and a plurality of Y-axis traces distributed equidistantly along the Y-axis direction and arranged parallel to each other. The insulating bridging layer covers the X-axis trace and the Y-axis trace of the sensing layer and has a plurality of through holes to expose part of the Y-axis trace. The two ends of the bridging electrical wire are respectively electrically connected to the Y-axis trace through the through hole. The protective layer covers the sensing layer, the insulating bridging layer, and the bridging electrical wires. The laminated structure of the non-display area includes a microstructure layer and a shielding layer. The microstructure layer has a first side and a second side opposite to each other. The microstructure layer includes a plurality of prism microstructures and its first side is attached to a transparent One side of the substrate, the shielding layer, covers the second side of the microstructure layer, and the shielding layer includes low light transmission material.

According to the technical solution provided by the present invention, the risk of direct processing of the substrate can be greatly reduced, and the yield rate of finished products can be effectively improved; in addition, the microstructure layer can simultaneously provide a light convergence effect similar to that of a brightness enhancement film, and by adjusting the height of each prism microstructure , spacing, and arrangement can provide different textures and produce different metallic luster effects.

Description of drawings

FIG. 1 is a schematic diagram of various embodiments of the present invention applied to a carrier such as a mobile phone.

Fig. 2 is a schematic cross-sectional view of a composite plate structure according to an embodiment of the present invention, cut along the line A-A' of Fig. 1 .

3A-3C are flowcharts of an example manufacturing process of a composite panel structure.

Fig. 4 is a schematic cross-sectional view of a composite plate structure according to another embodiment of the present invention.

FIG. 5A shows a schematic cross-sectional view of another embodiment of the composite sheet structure of the present invention.

FIG. 5B shows a schematic cross-sectional view of another embodiment of the composite sheet structure of the present invention.

6A-6D are schematic cross-sectional views illustrating different embodiments of the stacked structure of the visible area.

Reference number

10, 30 Composite sheet structure 38 Shielding layer

12 Substrates 42 Holographic laser microstructures

14 Adhesive layer 50a, 50b, 50c, 50d Laminated structure of visible area

16 microstructure layer 52 transparent substrate

16a The first side of the microstructure layer 54 Induction layer

16b The second side of the microstructure layer 54a X-axis trace

18 shielding layer 54b Y-axis trace

20 metal layer 56 insulating bridge layer

22 Substrate 58 Bridging wire

24 polymer 62 protective layer

24a Prism microstructure 64 Metal wire

32 Substrate 66 Flexible circuit board

34 surface treatment film layer 100 mobile phone

36 microstructure layer P pitch

36a First side of microstructured layer T T Penetrating hole

36b Height difference on the second side of the microstructure layer ΔH

Detailed ways

Other purposes and advantages of the present invention can be further understood from the technical features disclosed in the present invention. In order to make the above and other objects, features and advantages of the present invention more comprehensible, the following specific embodiments are described in detail with reference to the accompanying drawings.

The aforementioned and other technical contents, features and effects of the present invention will be clearly presented in the following detailed description of the embodiments with reference to the accompanying drawings. The directional terms mentioned in the following embodiments, such as: up, down, left, right, front or back, etc., are only directions referring to the attached drawings. Accordingly, the directional terms are used to illustrate and not to limit the invention.

FIG. 1 is a schematic diagram of various embodiments of the present invention applied to a carrier such as a mobile phone. As shown in FIG. 1 , the mobile phone 100 has a viewing area and a non-display area. The composite plate structure according to various embodiments of the present invention can be disposed in the non-display area to provide special material effects, such as visual effects of metal texture, color, texture or luster.

Fig. 2 is a schematic cross-sectional view of a composite plate structure 10 according to an embodiment of the present invention, cut along the line A-A' of Fig. 1 . 3A-3C are flowcharts of an example manufacturing process of the composite panel structure 10 . As shown in FIG. 2 , the composite structure 10 includes a substrate 12 , an adhesive layer 14 formed on the substrate 12 , a microstructure layer 16 and a shielding layer 18 . The microstructure layer 16 has an opposite first side 16a and a second side 16b, the first side 16a of the microstructure layer 16 is attached to one side of the substrate 12 through the adhesive layer 14, and the shielding layer 18 is covered on the microstructure The second side 16b of the layer 16 . An example of a manufacturing process for the composite panel structure 10 is described as follows.

As shown in Figure 3A, a substrate 22 is firstly provided, the material of the substrate 22 can be polyethylene terephthalate (PET) or other plastic materials, and the substrate 22 is coated with a layer of ultraviolet light The cured or thermally cured polymer 24 is then formed into the desired prism microstructure 24a by embossing as shown in FIG. 3B , and then irradiated with ultraviolet light or heated for curing. The shape and arrangement of the multiple microstructures 24a can form different textures and provide different light reflection and refraction effects. As shown in FIG. 3C , the substrate 22 having the pattern of prism microstructures 24 a can be pasted on the substrate 12 through the adhesive layer 14 , and the adhesive layer 14 includes, for example, an optically clear adhesive (OCA). The substrate 12 can be a cover lens of a touch panel. The material of the substrate 12 can be glass, plastic or silicon crystal, etc., and the plastic material can be, for example, polyethylene terephthalate (PET), polycarbonate (PC), or polymethyl methacrylate (PMMA). wait. A shielding layer 18 made of a low-transmittance material such as black ink or coated metal can be attached to the substrate 22 and cover the microstructure 24a by means of coating. Through the design of this embodiment, the prism microstructure 24 a can reflect or refract incident light, so that the substrate 12 with a smooth touch can produce a prism texture with a stereoscopic effect and a metallic texture and luster. Because the microstructure layer 16 is molded and then bonded to the substrate 12, the risk of direct processing of the substrate 12 can be greatly reduced, and the yield rate of the finished product can be effectively improved, and the microstructure layer 16 can be torn off and reworked when an error occurs in the bonding process, so The substrate 12 can be reused and has good rework characteristics. Moreover, the microstructure layer 16 can simultaneously provide a light converging effect similar to a Brightness Enhancement Film (BEF), and by adjusting the height, spacing, and arrangement of each prism microstructure 24a, different textures can be provided and different metallic luster effects can be produced. Therefore, the height, pitch, and arrangement of each prism microstructure 24a are not limited at all, for example, the prism peaks of every two adjacent prism microstructures 24a can have the same pitch P ( FIG. 2 ), or have different pitches, and Two adjacent prism microstructures 24a may have different heights (produce the height difference ΔH shown in FIG. 2 ), or have the same height ( FIG. 4 ). Moreover, as shown in FIG. 4 , in one embodiment, a metal layer 20 can be disposed between the adhesive layer 14 and the microstructure layer 16 to further enhance the metallic texture, and the material of the metal layer 20 can be, for example, a conductive vacuum metal coating (VM) or non-conductive vacuum metallization (NCVM).

FIG. 5A shows a schematic cross-sectional view of another embodiment of the composite sheet structure of the present invention. As shown in FIG. 5A , the composite plate structure 30 includes a substrate 32 , a surface treatment film layer 34 , a microstructure layer 36 , and a shielding layer 38 . The microstructure layer 36 has an opposite first side 36a and a second side 36b. The microstructure layer 36 can be made of a metal material and includes a plurality of holographic laser microstructures 42, and the first side 36a of the microstructure layer 36 The surface treatment film layer 34 is attached to one side of the substrate 32 . The shielding layer 38 covers the second side 36 b of the microstructure layer 36 , and the shielding layer 38 includes a low-transmittance material such as black ink. For example, the microstructure layer 36 can be formed on the surface treatment film layer 34 by coating, screen printing or transfer printing, and the shielding layer 38 can be coated on the second surface of the microstructure layer 36 by coating, screen printing or transfer printing. side 36b. The holographic laser microstructure 42 is formed by holographic laser molding. For example, a pattern can be provided for art plate making, and then the laser light passing through the pattern is projected onto a glass sheet coated with photoresist, and then electroformed to form a microstructure mold core, and then use the microstructure mold core to mold the whole Like laser microstructure42. The surface treatment film layer 34 can be formed, for example, by corona treatment, using the gap between the electrodes on the substrate 32 to generate corona, polarizing the surface to increase adhesion and surface tension, and improving the bonding stability of the microstructure layer 36 and the substrate 32 degree and airtightness. According to the design of this embodiment, when light is irradiated on the holographic laser microstructure 42 of the microstructure layer 36, phenomena such as refraction, scattering, and reflection can occur, and when the light passes through the holographic laser microstructure 42, it will be It produces rich color changes, which can produce the same luster or colorful glare as the metal texture, so that a transparent substrate can provide bright and eye-catching luster, texture and special visual effects. The substrate 32 can be, for example, a cover lens of a touch panel, and the material of the substrate 32 can be light-transmitting materials such as glass, plastic or silicon crystal, and the plastic material can be polyethylene terephthalate, for example. (PET), polycarbonate (PC), or polymethyl methacrylate (PMMA), etc. In one embodiment, as shown in FIG. 5B , the microstructure layer 36 may be directly attached to one side of the substrate 32 by rolling or pasting without forming the surface treatment film layer 34 .

Since the above-mentioned embodiments can be implemented on glass or silicon crystal materials, they can be applied to a touch panel, and the composite plate structure can be directly integrated on a cover mirror of the touch panel. A cover mirror lamination structure for a touch panel is described as follows, the cover mirror lamination structure includes a visible area lamination structure located in the visible area of FIG. 2 and a non-display area lamination located in the non-display area Layer structure, the layered structure of the visible area and the layered structure of the non-display area are adjacent to each other and formed on the cover mirror of a touch panel, and the layered structure of the non-display area can be the composite plate structure disclosed in the foregoing embodiments , which will not be described in detail here, so different embodiments of the stacked structure of the visible area are described below with the cross-sectional schematic diagrams of FIGS. 6A-6D . As shown in FIG. 6A , the stacked structure 50 a in the visible area at least includes a transparent substrate 52 , a sensing layer 54 , an insulating bridge layer 56 , and a bridge wire 58 . The sensing layer 54 is arranged on a surface of the transparent substrate 52, and the sensing layer 54 includes a plurality of X-axis traces 54a distributed equidistantly along the X-axis direction and arranged parallel to each other, and a plurality of traces 54a equidistantly distributed along the Y-axis direction and arranged parallel to each other. Parallel aligned Y-axis traces 54b. The insulating bridging layer 56 is a light-transmitting insulating thin layer. The insulating bridging layer 56 covers the X-axis trace 54a and the Y-axis trace 54b of the sensing layer 54 and is provided with a plurality of through holes T to expose part of the Y-axis trace area, bridging the electrical Two ends of the wire 58 are electrically connected to different Y-axis traces 54 b through the through holes T respectively. A protective layer 62 covers the sensing layer 54 , the insulating bridge layer 56 , and the bridge electrical wire 58 , and the stacked structure 50 a of the visible area is electrically connected to a flexible circuit board 66 via a metal wire 64 . As shown in FIG. 6B, in another stacked structure 50b in the visible region, the range of the protective layer 62 can also be extended downward to reduce the range of the insulating bridge layer 56, and the through hole T is provided between the protective layer 62 and the insulating bridge layer. Between 56. As shown in FIG. 6C , in another visible region stacked structure 50c, the sensing layer 54 can be formed above the insulating bridge layer 56 and the bridge electrical wire 58 is formed below the insulating bridge layer 56, and the insulating bridge layer 56 is set. There are a plurality of through holes T. Alternatively, as shown in FIG. 6D , in another visible region stacked structure 50d, the sensing layer 54 can be formed above the insulating bridge layer 56 and the bridge electrical wire 58 is formed below the insulating bridge layer 56, and the bridge electrical wire Both ends of 58 are respectively connected to a Y-axis trace 54b.

Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art may make some changes and modifications without departing from the spirit and scope of the present invention. Therefore The protection scope of the present invention shall be determined by the scope defined in the claims. In addition, any embodiment or claim of the present invention does not necessarily achieve all the objects or advantages or features disclosed in the present invention. In addition, the abstract and the title are only used to assist in the search of patent documents, and are not used to limit the scope of rights of the present invention.

Claims (15)

1. A composite plate structure, characterized in that, the composite plate structure comprises: a substrate; A microstructure layer, formed on the substrate, and has a first side and a second side opposite, the microstructure layer includes a plurality of prism microstructures, wherein the substrate is attached to the first side ;and A shielding layer covers the second side of the microstructure layer and includes a low light transmission material. 2. The composite sheet structure according to claim 1, further comprising an adhesive layer disposed between the substrate and the microstructure layer. 3. The composite sheet structure according to claim 2, further comprising a metal layer disposed between the adhesive layer and the microstructure layer. 4. The composite panel structure of claim 2, wherein the adhesive layer comprises an optically high penetration adhesive compound. 5. The composite sheet structure according to claim 1, wherein the microstructure layer is made of light hardening or heat hardening material. 6. The composite sheet structure of claim 5, wherein the prismatic microstructure is formed by an embossing process. 7. The composite board structure according to claim 6, wherein the low light transmission material is a black ink or a metal material. 8. The composite sheet structure according to claim 1, further comprising a surface treatment film layer disposed between the substrate and the microstructure layer. 9. The composite plate structure according to claim 8, wherein the microstructure layer is made of metal material. 10. The composite sheet structure of claim 9, wherein the prismatic microstructures are formed by holographic laser processing. 11. The composite plate structure according to claim 10, wherein the low light transmission material is a black ink. 12. The composite sheet structure according to claim 1, characterized in that, the prism peaks of the prism microstructures are of equal height or non-equal height. 13. The composite plate structure according to claim 1, characterized in that, the pitch of the prism microstructures is equidistant or non-equidistant. 14. The composite board structure of claim 1, wherein the substrate is a cover mirror of a touch panel. 15. A cover mirror lamination structure for a touch panel, characterized in that the cover mirror lamination structure comprises: a transparent substrate; A visible zone stacked structure formed on the transparent substrate and comprising: A sensing layer arranged on the transparent substrate, the sensing layer includes a plurality of X-axis traces equidistantly distributed along the X-axis direction and arranged parallel to each other, and a plurality of X-axis traces equidistantly distributed along the Y-axis direction and arranged parallel to each other Y-axis trace; An insulating bridging layer covering the X-axis trace and the Y-axis trace of the sensing layer and having a plurality of through holes to expose part of the Y-axis trace; a bridging electrical wire, the two ends of the bridging electrical wire are respectively electrically connected to the Y-axis trace through the through hole; and a protective layer covering the sensing layer, the insulating bridging layer, and the bridging electrical wires; and A non-display area stack structure formed on the transparent substrate and adjacent to the visible area stack structure, the non-display area stack structure comprising: a microstructured layer having opposing first and second sides, the microstructured layer comprising a plurality of prismatic microstructures, wherein the transparent substrate is attached to the first side; and A shielding layer covers the second side of the microstructure layer, and the shielding layer includes a low light transmission material.

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