TWI588845B - Conductive substrate structure for 4-wire type touch panel and manufacturing method thereof - Google Patents

Description

Conductive substrate structure for four-wire resistive touch panel and manufacturing method thereof

The present invention relates to a substrate for a touch panel, and more particularly to a substrate for use as a top layer of a four-wire resistive touch panel.

Since the touch panel can be combined with the input and display interface, it has the advantages of saving device space and maneuvering maneuverability. It has been widely used in various consumer or industrial electronic products. For example: personal digital assistant (personal Digital assistant, PDA), palm-sized PC, tablet computer, mobile phone, smart phone handwriting input device, information appliance, automatic finance Automated Teller Machine (ATM), Point-Of-Sale (POS) and other devices are widely used in various commercial and industrial applications.

The touch panel is divided into five categories according to its sensing principle: a resistive touch panel, a projected capacitive touch panel, an optical touch panel, an electromagnetic touch panel, and an acoustic wave touch panel. Various touch panels have advantages and disadvantages in terms of size, cost, process and operation accuracy. For example, a projected capacitive touch panel has higher transmittance than a resistive type and a faster reaction speed, and is also resistant to fire and dirt. Good performance in scratch resistance, anti-static and anti-dust properties.

Among the various types of touch panels, resistive and projected capacitive touch panels are most popular because of their low price. The resistive touch panels are divided into four lines according to the different electrode wiring patterns. The five-wire and six-wire resistive touch panels are described in detail in the Taiwan Patent Application No. 096115419, which is described in the applicant's Taiwan Patent Application No. 096115419. The structure and operation principle of the five-wire resistive touch panel are described in detail in the applicant's Taiwan Patent Application No. 094102548, and the projected capacitive touch panel is described in detail in the applicant's Taiwan Patent Application No. 100205776. Structure and actuation principle.

However, no matter what type of touch panel, the direction of its design and development is nothing more than trying to be more aesthetic, thin, and cost-effective. However, while improving the above factors, it cannot sacrifice the original touch panel. The handling, such as sensitivity, tolerance, clarity and other functions, under this comprehensive consideration, the top layer of the touch panel, that is, the face of the user, its design and development, has become a very critical issue. .

Please refer to the first figure (a) and the first figure (b). The first figure (a) is a side view showing the laminated structure of the conventional resistive touch panel, and the first figure (b) reveals corresponding to the first A top view of the front side of the conventional resistive touch panel of FIG. The touch panel 10 disclosed in the first figure (a) is mainly composed of an element such as the bottom layer 11, the top layer 12, the sealant 13 and the spacer 14, wherein the bottom layer 11 is generally provided with a light-transmitting conductive surface. The substrate 11b of the substance 11a, the substrate 11b is PC or glass, and the top layer 12 is a polyethylene terephthalate (PET) substrate 12b having a light-transmitting conductive material 12a disposed on its surface.

A spacer 14 is further disposed between the top layer 12 and the bottom layer 11 to separate the two layers to prevent the bottom layer 11 and the top layer 12 from self-conducting, and the top layer 12 and the bottom layer 11 are joined by the sealant 13 to the top of the entire touch panel 10. The adhesive 16 is adhered to a transparent protective layer 18, which can make the surface S of the touch panel 10 finally have a flat appearance.

Please refer to the first figure (b). From the front appearance of the resistive touch panel, the surface is usually divided into two areas, namely the active area AA and the border area FA, and the active area AA is used to accept the user's touch. When the touch is made for input, the frame area FA is used for the circuit trace inside the touch panel. Therefore, generally between the protective layer 18 and the top layer 12 of the touch panel 10, at the position corresponding to the frame area FA, the adhesive is also passed through the adhesive. 16 is provided with an opaque shielding layer 17 which is generally black and has a form size just enough to cover the border area FA to shield the messy circuit traces under the border area FA, so that the touch is finally presented to the user. The surface S of the control panel 10 is a flat, smooth, beautiful, simple, and sloping appearance.

The user presses the active area AA on the surface S to make the bottom layer 11 and the top layer 12 contact and conduct, and the touch panel 10 can detect the pressing position to generate a control signal, and an output circuit 15 is connected to the top layer 12 and the bottom layer. The side of 11 is used to output control signals.

Please continue to refer to the second figure (a), which shows a schematic top view of the back side of the top structure of the conventional projected capacitive touch panel. The top structure of the touch panel 20 of the second figure (a) includes a base The board 21, the sensing electrode 22, the Y-axis electrode layer 23, the X-axis electrode layer 24, the Y-axis circuit cable 25, and the X-axis circuit cable 26 and the like, wherein the sensing electrode 22 is disposed in the actuation area AA of the touch panel 20. The Y-axis electrode layer 23 is electrically connected to the Y-axis circuit cable 25, the X-axis electrode layer 24 is electrically connected to the X-axis circuit cable 26, and the Y-axis circuit cable is used to sense the user's touch to generate an input signal. 25 and the X-axis circuit cable 26 will be routed along the frame area FA of the touch panel 20, and all input signals generated by the sensing electrode 22 will be transmitted via the Y-axis circuit cable 25 and the X-axis circuit cable 26. To an external processor.

Please refer to both the second figure (a) and the second figure (b). The second figure (b) reveals the appearance of the front side of the top layer structure of the touch panel 20. The top layer structure of the touch panel 20 disclosed in the second figure (a) is a rear top view of the top layer structure, that is, a surface that does not directly face the user, but the front surface of the opposite surface is a surface directly facing the user, Also, as in the foregoing resistive touch panel, an opaque shielding layer 27 is further disposed to shield the messy circuit traces under the frame area FA, so that the surface S of the touch panel 20 finally presented in front of the user is a Flat, smooth, beautiful, concise, and degenerate appearance, as shown in Figure (b).

However, whether the resistive or capacitive touch panel is provided with the aforementioned opaque shielding layer, the overall thickness of the touch panel is undoubtedly increased, and at the same time, due to the thickness difference between the opaque shielding layer and the protective layer, The surface of the touch panel is less likely to give the user a full-plane feel, and adding a masking layer material also increases the overall cost of the touch panel.

As a result of the job, the applicant has been able to overcome the above-mentioned problems in the prior art. After careful experimentation and research, and a perseverance, I finally conceived the "substrate structure for touch panel and its manufacturing method". Disadvantages, the following is a brief description of the case.

In view of the defects in the prior art, the present invention prints opaque dielectric ink and conductive ink on the frame area on the back surface of the top layer of the touch panel, and prints the border area of the dielectric ink and the conductive ink. The effect can also be used for circuit routing, so that the use of the shielding layer and the upper and lower adhesive layers can be omitted, which helps the touch panel to be further thinned, saves materials and reduces cost, and finally presents touch in front of the user. The surface of the panel will have a flat, smooth, beautiful, concise, degenerate and completely flat-faced appearance, but with the same At the same time, the original handling performance of the touch panel, such as sensitivity, tolerance, and definition, is not sacrificed.

Therefore, in accordance with a first aspect of the present invention, a single-substrate substrate structure for a four-wire resistive touch panel is provided, comprising a conductive substrate having a conductive surface having a border at an edge surrounding the four adjacent sides The mask region includes a dielectric cutout region formed by removing a portion of the conductive surface in the frame region of the two parallel opposite sides to expose a dielectric surface. a dielectric film formed on the conductive surface of another portion of the bezel region; and a conductive film formed on the dielectric surface exposed in the dielectric cutout region Wherein the dielectric film has the same opaque color as the conductive film.

According to a second aspect of the present invention, a method for fabricating a monolithic substrate structure for a four-wire resistive touch panel is provided, comprising providing a conductive substrate having a conductive surface having an edge surrounding the four adjacent sides a frame region; removing a portion of the conductive surface in the frame region of the two parallel opposite sides to expose a dielectric surface to form a dielectric cutout; the other portion of the frame region Forming a dielectric film on the conductive surface; and forming a conductive film on the dielectric surface exposed in the dielectric cutout region, wherein the dielectric film has the same opaque color as the conductive film.

AA‧‧‧Action Area

FA‧‧‧Border area

S‧‧‧ surface

10‧‧‧Resistive touch panel

11‧‧‧ bottom layer

11a‧‧‧Translucent conductive material

11b‧‧‧Substrate

12‧‧‧ top

12a‧‧‧Light-transmitting conductive materials

12b‧‧‧PET substrate

13‧‧‧Box glue

14‧‧‧ spacers

15‧‧‧Output circuit

16‧‧‧Viscos

17‧‧‧Opacity shielding layer

18‧‧‧Protective layer

20‧‧‧Capacitive touch panel

21‧‧‧Substrate

22‧‧‧Induction electrode

23‧‧‧Y-axis electrode layer

24‧‧‧X-axis electrode layer

25‧‧‧Y-axis circuit cable

26‧‧‧X-axis circuit cable

27‧‧‧Opacity shielding layer

40‧‧‧ITO substrate

40a‧‧‧ITO conductive layer

41‧‧‧ dielectric film

42‧‧‧Conducting area

43‧‧‧Electrical film layer

50‧‧‧ITO substrate

50a‧‧‧ITO conductive layer

51‧‧‧ dielectric film

52‧‧‧Excavation area

53‧‧‧ Conductive film

60‧‧‧ dielectric substrate

61‧‧‧ dielectric film

62‧‧‧Conducting area

63‧‧‧Electrical film layer

64‧‧‧Transparent conductive layer

70‧‧‧ dielectric substrate

71‧‧‧ dielectric film

73‧‧‧Electrical film layer

74‧‧‧Transparent conductive layer

80‧‧‧ITO substrate

80a‧‧‧ITO conductive layer

81‧‧‧ dielectric film

82‧‧‧Conducting area

83‧‧‧Electrical film layer

90‧‧‧ITO substrate

90a‧‧‧ITO conductive layer

91‧‧‧ dielectric film

92‧‧‧Conducting area

93‧‧‧Electrical film layer

100‧‧‧ dielectric substrate

101‧‧‧ dielectric film

102‧‧‧Conducting area

103‧‧‧Electrical film layer

104‧‧‧Transparent conductive layer

110‧‧‧ITO substrate

110a‧‧‧ITO conductive layer

110b‧‧‧electrode

111‧‧‧ dielectric film

112‧‧‧镂空区

113‧‧‧Electrical film layer

120‧‧‧ dielectric substrate

121‧‧‧Dielectric film layer

122‧‧‧Transparent conductive layer

123‧‧‧Electrical film layer

310‧‧‧ Providing a substrate, which can be a conductive substrate or a dielectric substrate, the surface of which is pre-divided into an active area and a border area

320‧‧‧Printing a layer of dielectric ink on a part of the frame on the back side of the substrate. The pattern of the dielectric ink has been pre-designed, and the pattern should be reserved in advance or Locations including conductive areas, excavation areas, hollow areas, etc. may not be retained

330‧‧‧ Then, by printing, a layer of conductive ink is formed on the dielectric film, conductive area, excavation area, hollow area, etc. on the frame area, and the color of the dielectric ink and the conductive ink is completely completed. same

The first figure (a) is a side view showing a laminated structure of a conventional resistive touch panel; the first figure (b) is a plan view showing the front surface of the conventional resistive touch panel corresponding to the first figure (a). The second figure (a) is a top view showing the back side of the top structure of the conventional projected capacitive touch panel; the second figure (b) is a front view showing the front side of the top structure of the conventional projected capacitive touch panel. FIG. 3 is a flow chart showing a method for fabricating a substrate structure for a touch panel of the present invention; and FIGS. 4(a) to 4(c) are schematic views showing a first embodiment of the present invention; The fifth (a) to (d) are schematic views of a second embodiment of the present invention; the sixth (a) to (f) are schematic views of a third embodiment of the present invention; and the seventh figure (a) ~(d) is a schematic diagram of a fourth embodiment of the present invention; eighth diagrams (a) to (c) are schematic views of a fifth embodiment of the present invention; and ninth diagrams (a) to (c) are A schematic view of a sixth embodiment of the present invention; a tenth (a) to (d) are schematic views of a seventh embodiment of the present invention; and an eleventh (a) to (d) are the eighth embodiment of the present invention BRIEF DESCRIPTION OF THE DRAWINGS FIG. 12 is a schematic view showing a ninth embodiment of the present invention; and a thirteenth drawing is a schematic view of the final appearance of the present invention.

The present invention will be fully understood by the following examples, so that those skilled in the art can do so. However, the implementation of the present invention may not be limited by the following embodiments.

The conductive substrate described in the present invention is composed of a substrate layer and a conductive layer, and the material of the substrate layer is preferably, but not limited to, polycarbonate (PC) material, polyethylene (PE) material, and poly(p-xylylene). Ethyl acetate (PET) material, polyethylene naphthalene (PEN) material, polymethyl methacrylate (PMMA) material, cellulose triacetate (TAC) material, glass material or various other insulating materials, forming a layer on the substrate layer a conductive layer, preferably, but not limited to, an indium tin oxide (ITO) material, a Fluorine Tin Oxide (FTO) material, an antimony tin Oxide (ATO) material, or Carbon ink material.

The material of the dielectric substrate described in the present invention is preferably, but not limited to, polycarbonate (PC) material, polyethylene (PE) material, polyethylene terephthalate (PET) material, polyethylene naphthalene (PEN). Materials, polymethyl methacrylate (PMMA) materials, cellulose triacetate (TAC) materials, glass materials or various other insulating materials.

The conductive substrate and the dielectric substrate described in the present invention are used as a top layer structure of a touch panel. Taking a resistive touch panel as an example, the top layer structure is bonded to the underlying structure to produce a sandwiched laminated layer. The main structure of the laminated structure is a capacitive touch panel. The top layer structure is a layer formed with sensing electrodes.

For a conductive substrate, the front side refers to the surface without the conductive layer, and is also the top layer junction. The front surface of the structure is facing the front side of the user, and the back side refers to the surface on which the conductive layer is formed. For example, the resistive touch panel is also used as a back surface for bonding with the underlying structure in the top layer structure, and capacitive touch is used. For example, the panel is also the back surface of the top layer structure for forming the sensing electrodes.

For a dielectric substrate, the front side refers to a surface on which no conductive layer is formed, and is also a front surface of the top layer structure that finally faces the user, and the back side refers to a surface on which a conductive layer is formed during the process, For example, the resistive touch panel is also the back surface of the top layer structure for bonding with the underlying structure. The capacitive touch panel is taken as an example, and is also the back surface of the top layer structure for forming the sensing electrodes.

For convenience of description, the present invention uses an ITO substrate as a description for the conductive substrate in each of the embodiments, but the implementation of the conductive substrate of the present invention includes, but is not limited to, an ITO substrate.

The present invention is applicable to, but not limited to, various resistive touch panels, various capacitive touch panels, or various electromagnetic touch panels. For convenience of description, the present invention uses a resistive touch panel and a projected capacitive touch panel as a description. Case, but the implementation of the present invention includes, but is not limited to, a resistive touch panel and a projected capacitive touch panel.

The dielectric inks and conductive inks described herein are opaque inks, which may be, but are not limited to, black, silver, white, red, blue, yellow, or various other colors.

The fourth to eleventh aspects of the present invention show the back side, i.e., the side of the top structure for engaging the underlying structure, and the thirteenth figure shows the front side, which is the face that ultimately faces the user.

Referring to Figures 4(a) through 4(c), a first embodiment of the present invention is disclosed. The ITO substrate 40 shown in the fourth to fourth figures (a) to (c) is preferably a top structure of a four-wire or eight-wire resistive touch panel, and the fourth (a) to fourth (c) The back surface of the ITO substrate 40 is shown.

The ITO substrate 40 shown in the fourth to fourth figures (a) to (c) is pre-planned according to its use as a frame area FA near the edge, which occupies less area of the ITO substrate 40, and is larger in the center. The area actuates the area AA, which occupies most of the area of the ITO substrate 40.

Referring to FIG. 4(a), first, an ITO substrate 40 is provided. The fourth diagram (a) shows the back surface of the ITO substrate 40 in a plan view, and the ITO substrate 40 in the fourth diagram (a) is a substrate. The layer is formed of the ITO conductive layer 40a, and the substrate layer is located below the ITO conductive layer 40a. Therefore, it is not shown in the fourth figure (a).

Referring to FIG. 4(b), the process is performed, for example, by screen printing, transfer printing, printing or coating, on the ITO conductive layer 40a of the ITO substrate 40, near the border area FA at the edge of the ITO substrate 40. Forming a dielectric film layer 41. After the dielectric film layer 41 is printed over the ITO conductive layer 40a, the exposed ITO conductive layer 40a not covered by the dielectric film layer 41 is left, and the active area AA is included. The conductive region 42, in the form of the design of the dielectric film layer 41, has been pre-planned to form the conductive film layer 42 in a pattern that exposes the conductive region 42.

Referring to FIG. 4(c), a conductive film layer 43 is formed on the range larger than the conductive region 42 by a process such as screen printing, transfer printing, printing or coating, and the conductive film layer 43 can be partially The portion covers and contacts the ITO conductive layer 40a on the active area AA, and electrically connects the conductive film layer 43 with the ITO conductive layer 40a on the active area AA; notably, the dielectric film layer 41 and the conductive film The layer 43 is opaque and has the same color of the film material, preferably opaque ink, and has the same color code color, that is, the dielectric film layer 41 and the conductive film layer 43 are preferably the same color opaque ink, for example: black The color of silver, white, red, blue or yellow, after the conductive film layer 43 is printed over the ITO conductive layer 40a, the overall process has clearly defined the active area AA and the frame area FA on the ITO substrate 40.

After the dielectric film layer 41 and the conductive film layer 43 are all printed, other four- or eight-wire resistive touch panels can be disposed on the frame area FA including the dielectric film layer 41 and the conductive film layer 43. The required trace or circuit; and because the conductive substrate 40 is the top structure of the touch panel, the front side is the surface to be used, and the final appearance will be as shown in the thirteenth picture, in the dielectric film layer. 41 and the shielding of the conductive film layer 43 are neatly divided into the active area AA and the frame area FA, and the active area AA is also a picture display area. When the conductive substrate 40 is assembled on the touch panel, the dielectric film layer 41 is disposed. And other traces or circuits required for the four-wire or eight-wire resistive touch panel on the conductive film layer 43 will be shielded by the colored dielectric film layer 41 and the conductive film layer 43 without It is observed, therefore, the appearance of the device seen by the user from the front of the touch panel will be a complete, clean, full-flat surface, as shown in Figure 13, and the overall process is simple and cost-effective. Advantages

Referring to Figures 5(a) through 5(d), a second embodiment of the present invention is disclosed. Please refer to the fifth figure (a) first, first provide a piece of ITO substrate 50, which is preferably used as a four-wire or The top layer structure of the eight-wire resistive touch panel has the ITO conductive layer 50a formed thereon pre-planned as the active area AA and the bezel area FA, and the fifth figure (a) shows the back side of the ITO substrate 50.

Please continue to refer to FIG. 5(b), and then remove the ITO conductive layer 50a located at the frame area FA, where the conductive film layer is to be formed, to expose the underlying transparent substrate layer and form a cutout area, for example, by etching. 52.

Please continue to refer to FIG. 5(c), and then form a dielectric film layer 51 on the frame area FA near the edge of the ITO substrate 50 by a process such as screen printing, transfer printing, printing or coating. After the dielectric film layer 51 is printed over the ITO conductive layer 50a, the ITO conductive layer 50a exposed without being covered by the dielectric film layer 51 is left, and the active area AA and the cutout area 52 are included. In the form of the film layer 51, the pattern of the dielectric film layer 51 has been previously planned to expose the excavation area 52.

Referring to FIG. 5(d), a conductive film layer 53 is formed on the range larger than the cutout area 52 to define the active area AA and the border by a process such as screen printing, transfer printing, printing or coating. The area FA, and the conductive film layer 53 can partially cover and contact the ITO conductive layer 50a on the active area AA, and electrically connect the conductive film layer 53 with the ITO conductive layer 50a on the active area AA; The dielectric film layer 51 and the conductive film layer 53 are opaque and have the same color of the film material, preferably color dielectric inks having the same color code and color conductive inks.

After the dielectric film layer 51 and the conductive film layer 53 are all printed, other four- or eight-wire resistive touch panels can be disposed on the frame region FA including the dielectric film layer 51 and the conductive film layer 53. The required wiring or circuit, when the conductive substrate 50 is assembled on the touch panel, under the shielding of the dielectric film layer 51 and the conductive film layer 53, other about the dielectric film layer 51 and the conductive film layer 53 The traces or circuits required for the four-wire or eight-wire resistive touch panel will be shielded by the colored dielectric film layer 51 and the conductive film layer 53 without being observed from the front appearance, and the conductive substrate 50 The final appearance of the front side will be as shown in Figure 13, neatly and cleanly divided into the active area AA and the border area FA.

Referring to Figures 6(a) through 6(d), a third embodiment of the present invention is disclosed. Please refer to the sixth figure (a) first, firstly provide a dielectric substrate 60, preferably as a top structure of a four-wire or eight-wire resistive touch panel, the surface of which is pre-planned as the active area AA and the border area. FA, figure (a) shows the back side of the dielectric substrate 60.

Please continue to refer to the sixth figure (b), and then form a dielectric film layer 61 on the frame area FA near the edge of the dielectric substrate 60 by a process such as screen printing, transfer printing, printing or coating. After the dielectric film layer 61 is printed over the dielectric substrate 60, the dielectric substrate 60 exposed without being covered by the dielectric film layer 61 is left, and the active region AA and the conductive region 62 are included. In the form of the film layer 61, the pattern of the dielectric film layer 61 has been previously planned to expose the conductive region 62.

Please continue to refer to the sixth figure (c), and then form a conductive film layer 63 at the position of the conductive region 62 shown in the sixth figure (b) by a process such as screen printing, transfer printing, printing or coating. The active area AA and the frame area FA are defined; it is noted that the dielectric film layer 61 and the conductive film layer 63 are opaque and have the same color of the film material, preferably colored dielectric inks and colors respectively having the same color code. Conductive ink. On the frame area FA including the dielectric film layer 61 and the conductive film layer 63, other wiring or circuits required for the four-wire or eight-wire resistive touch panel can be disposed.

Please continue to refer to the sixth figure (d), and then form a cover action area over a range larger than the active area AA and overlap with the conductive film layer 63 by, for example, coating, transfer, printing or evaporation. The transparent conductive layer 64 of AA and the conductive film layer 63, the front surface of the dielectric substrate 60, and its final appearance will be neatly divided into the active area AA and the bezel area FA as shown in FIG.

It should be noted that, in the third embodiment, the steps of forming a conductive film layer 63 corresponding to the sixth figure (c) and forming the transparent conductive layer 64 corresponding to the sixth figure (d) may be performed in an order in which they are exchanged. That is, when the process is performed, the transparent conductive layer 64 may be formed first to form the conductive film layer 63, and the order of the implementation process is not limited.

Please refer to the sixth diagram (e), which discloses a variation of the third embodiment of the present invention. Following the process of FIG. 6(b), a transparent conductive layer 64 covering the active area AA is formed over a range larger than the active area AA by, for example, coating, transfer, printing, or evaporation.

Please continue to refer to the sixth figure (f), and then with the transparent conductive layer 64 at a position larger than the conductive area 62 shown in the sixth figure (b) by a process such as screen printing, transfer printing, printing or coating. a layer of conductive film 63 is formed on the overlapping range to define an active area AA and a frame area FA; It should be noted that the dielectric film layer 61 and the conductive film layer 63 are opaque and have the same color of the film material, preferably color dielectric inks having the same color code and color conductive inks.

On the frame area FA including the dielectric film layer 61 and the conductive film layer 63, other wiring or circuits required for the four-wire or eight-wire resistive touch panel can be disposed. The front side of the dielectric substrate 60, whose final appearance will be as shown in Fig. 13, is neatly divided into the active area AA and the bezel area FA.

Referring to Figures 7(a) through 7(d), a fourth embodiment of the present invention is disclosed. Please refer to the seventh figure (a) first, firstly provide a dielectric substrate 70, preferably as a top structure of a four-wire or eight-wire resistive touch panel, the surface of which is pre-planned as the active area AA and the border area FA, Figure 7 (a) shows the back side of the dielectric substrate 70.

Please continue to refer to the seventh figure (b), and then form a dielectric film layer 71 on the frame area FA near the edge of the dielectric substrate 70 by a process such as screen printing, transfer printing, printing or coating. The dielectric film layer 71 will cover the frame area FA. The difference between the fourth embodiment and the former third embodiment is only that the dielectric film layer (61) of the first third embodiment does not cover the entire frame area. FA, the pattern is planned to expose the conductive region (62) in the bezel area FA, but the dielectric film layer 71 of the fourth embodiment will cover the entire bezel area FA without exposing the conductive area in the bezel area FA ( 62).

Please continue to refer to the seventh figure (c), and then form a conductive film layer 73 at the position of the conductive region 62 shown in the sixth figure (b) by a process such as screen printing, transfer printing, printing or coating. To define the active area AA and the frame area FA; it is worth noting that the dielectric film layer 71 and the conductive film layer 73 are preferably film materials having an opaque color, but the dielectric film layer 71 and the conductive film layer 73 need not be The color dielectric ink of the same color code and the color conductive ink, that is, the color between the dielectric film layer 71 and the conductive film layer 73 do not need to match each other. On the frame area FA including the dielectric film layer 71 and the conductive film layer 73, other wiring or circuits required for the four-wire or eight-wire resistive touch panel can be disposed.

Please continue to refer to the seventh diagram (d), and then form a cover actuation area over a range larger than the actuation area AA and overlap with the conductive film layer 73 by, for example, coating, transfer, printing, or evaporation. AA and a transparent conductive layer 74 in contact with the conductive film layer 73, the front surface of the dielectric substrate 70, the final appearance of which will be divided into the active area AA and the side as shown in Fig. Box area FA. It should be noted that, in the fourth embodiment, the steps of forming the conductive film layer 73 corresponding to the seventh figure (c) and the forming the transparent conductive layer 74 corresponding to the seventh figure (d), the order of implementation may be interchanged. That is, when the process is performed, the transparent conductive layer 74 may be formed first to form the conductive film layer 73, and the order of the implementation process is not limited, as in the sixth embodiment in the sixth figure (e) to the sixth figure (f). Revealed in the middle.

Referring to Figures 8(a) through 8(c), a fifth embodiment of the present invention is disclosed. Please refer to the eighth figure (a) first, firstly provide an ITO substrate 80, preferably as the top structure of the five-wire resistive touch panel, the surface of which is pre-planned as the active area AA and the frame area FA, the eighth picture (a) The back surface of the ITO substrate 80 is shown.

Referring to FIG. 8(b), the frame area FA at the edge near the edge of the ITO substrate 80, especially the border area FA near the edge, is followed by a process such as screen printing, transfer printing, printing or coating. On the outer frame, a dielectric film layer 81 is formed. After the dielectric film layer 81 is printed over the ITO conductive layer 80a, the ITO conductive layer 80a exposed without being covered by the dielectric film layer 81 is left, and the operation is included. The area AA and the conductive area 82, in the form of the design of the dielectric film layer 81, have previously been patterned in the form of the conductive film layer 82.

It should be noted that, in the pattern form of the dielectric film layer 81, reference may also be made to the planning of the pattern form of the dielectric film layer 71 in the fourth embodiment, and the pattern of the dielectric film layer 81 is planned to cover the entire frame. The area FA does not expose the form of the conductive area 82 in the bezel area FA.

Referring to FIG. 8(c), a conductive film layer 83 is formed on the conductive region 82 by a process such as screen printing, transfer printing, printing or coating to define the active area AA and the frame area FA. The electric film layer 81 and the conductive film layer 83 are preferably color dielectric inks having the same color code and color conductive inks. After the dielectric film layer 81 and the conductive film layer 83 are all printed, the dielectric film layer 81 is included. And the frame area FA of the conductive film layer 83 can be used for arranging other traces or circuits required for the five-wire resistive touch panel, for example, the detection layer circuit. The front side of the ITO substrate 80, that is, the front side of the top structure of the five-wire resistive touch panel, that is, the face facing the surface, the final appearance will be as shown in the thirteenth figure, neatly divided into the active area AA and the border District FA.

Referring to Figures 9(a) through 9(c), a sixth embodiment of the present invention is disclosed. The difference between the sixth embodiment and the fifth embodiment is only in the fifth embodiment. The electric film layer 81 is disposed on the outer side frame of the frame area FA immediately adjacent to the edge, but the dielectric film layer 81 in the sixth embodiment is disposed on the inner side frame of the frame area FA adjacent to the active area.

Referring to FIG. 9(a), first, an ITO substrate 90 is provided, and the ITO conductive layer 90a formed thereon is also pre-planned as the active area AA and the frame area FA. Referring to FIG. 9(b), the process is performed, for example, by screen printing, transfer, printing or coating, on the ITO conductive layer 90a of the ITO substrate 90, near the border area FA at the edge of the ITO substrate 90. In particular, a dielectric film layer 91 is formed on the inner side frame of the frame area FA adjacent to the active area AA, and the conductive area 92 is exposed. It should be noted that, in the pattern form of the dielectric film layer 91, reference may also be made to the planning of the pattern form of the dielectric film layer 71 in the fourth embodiment, and the pattern of the dielectric film layer 91 is planned to cover the entire frame. The area FA does not expose the form of the conductive area 92 in the bezel area FA.

Referring to FIG. 9(c), a conductive film layer 93 is formed at a position of the conductive region 92 shown in FIG. 9(b) by a process such as screen printing, transfer printing, printing or coating. The active area AA and the frame area FA, the dielectric film layer 91 and the conductive film layer 93 are preferably color dielectric inks having the same color code and color conductive inks, and the final appearance of the front surface of the ITO substrate 90 will be the thirteenth As shown in the figure, it is neatly divided into the active area AA and the border area FA.

Referring to Figures 10(a) through 10(d), a seventh embodiment of the present invention is disclosed. Referring to FIG. 10( a ), firstly, a dielectric substrate 100 is provided. The surface of the dielectric substrate 100 is pre-planned as an active area AA and a frame area FA. The dielectric substrate 100 is preferably used as a top structure of a five-wire resistive touch panel. The tenth figure (a) shows the back surface of the dielectric substrate 100.

Referring to FIG. 10(b), a dielectric film layer 101 is formed on the frame area FA near the edge of the dielectric substrate 100 by a process such as screen printing, transfer printing, printing or coating. After the dielectric film layer 101 is printed on the dielectric substrate 100, the dielectric substrate 100 exposed without being covered by the dielectric film layer 101 is left, and the active region AA and the conductive region 102 are included in the design of the dielectric film. In the form of layer 101, the pattern of dielectric film layer 101 has been previously planned to expose conductive regions 102.

Referring to FIG. 10(c), a conductive film layer 103 is formed on the conductive region 102 by a process such as screen printing, transfer printing, printing or coating to define the active area AA and the frame area FA. The electric film layer 101 and the conductive film layer 103 preferably have the same color code respectively Color dielectric inks and color conductive inks.

Please continue to refer to the tenth figure (d), and then form a cover action area over a range larger than the active area AA and overlap with the conductive film layer 103 by, for example, coating, transfer, printing or evaporation. The transparent conductive layer 104 of the AA and the conductive film layer 103 is electrically connected between the conductive film layer 103 and the transparent conductive layer 104 on the active area AA, and the dielectric film layer 101 and the conductive film layer 103 are all printed. Thereafter, on the frame area FA including the dielectric film layer 101 and the conductive film layer 103, it is available for arranging other traces or circuits required for the five-wire resistive touch panel, for example, the detection layer circuit. The front side of the dielectric substrate 100, whose final appearance will be as shown in Fig. 13, is neatly divided into the active area AA and the bezel area FA.

It should be noted that, in the seventh embodiment, the steps of forming the conductive film layer 103 corresponding to the tenth (c) and the forming the transparent conductive layer 104 corresponding to the tenth (d), the order of implementation may be interchanged. That is, when the process is performed, the transparent conductive layer 104 may be formed first to form the conductive film layer 103, and the order of the implementation process is not limited, as in the sixth embodiment in the sixth figure (e) to the sixth figure (f). Revealed in the middle.

Referring to Figures 11(a) through 11(d), an eighth embodiment of the present invention is disclosed. The invention can of course also be applied to a multi-point touch panel. Please refer to FIG. 11( a ) first, and firstly provide an ITO substrate 110 , which is preferably used as a multi-point projection capacitive type or multi-point resistive touch panel. The top layer structure, the ITO conductive layer 110a formed thereon is also pre-planned as the active area AA and the bezel area FA, and the eleventh (a) shows the back side of the ITO substrate 110.

Referring to FIG. 11(b), the ITO conductive layer 110a on the ITO substrate 110 is patterned by etching, for example, to remove the excess ITO conductive layer 110a, so that the ITO conductive layer 110a is formed into a plurality of rectangular shapes. The electrode 110b serves as a plurality of sensing electrodes of the multi-point touch panel.

Please continue to refer to FIG. 11(c), and then, in a process such as screen printing, transfer printing, printing or coating, on the ITO conductive layer 110a of the ITO substrate 110, near the edge of the ITO substrate 110. On the FA, a dielectric film layer 111 is formed to define an active area AA and a frame area FA. The dielectric film layer 111 includes a plurality of hollow regions 112 exhibiting an open state for exposing the ends of the plurality of electrodes 110b. It should be noted that when designing the form of the dielectric film layer 111, the pattern of the dielectric film layer 111 has been previously planned to leave a plurality of hollow regions 112. form.

Please continue to refer to FIG. 11(d), and then form a conductive film layer 113, a dielectric film layer 111 and a region larger than the hollow region 112 by a process such as screen printing, transfer printing, printing or coating. The conductive film layer 113 is preferably a color dielectric ink having the same color code and a color conductive ink, and the conductive film layer 113 is electrically connected to the plurality of electrodes 110b on the active area AA, and the dielectric film layer 111 and After the conductive film layer 113 is printed, the wiring or circuit required for the touch panel can be disposed on the frame area FA including the dielectric film layer 111 and the conductive film layer 113. The front side of the dielectric substrate 110, whose final appearance will be as shown in Fig. 13, is neatly divided into the active area AA and the bezel area FA.

Referring to Figures 12(a) through 12(d), a ninth embodiment of the present invention is disclosed. Please refer to the twelfth figure (a), firstly provide a dielectric substrate 120, preferably as a top structure of a multi-point projection capacitive type, multi-point resistive touch panel, the surface of which is pre-planned as the active area AA and the border The area FA, the twelfth figure (a) shows the back side of the dielectric substrate 120.

Please continue to refer to FIG. 12(b), and then form a dielectric film layer on the frame area FA near the edge of the dielectric substrate 120 by a process such as screen printing, transfer printing, printing or coating. 121, the dielectric film layer 121 will cover the frame area FA, and the remaining dielectric substrate 120 exposed without being covered by the dielectric film layer 121 includes the active area AA.

Please continue to refer to FIG. 12(c), and then form a dielectric layer on the dielectric substrate 120 on the dielectric substrate 120 and on the frame region FA by, for example, coating, transfer, printing or evaporation. The plurality of strip-shaped transparent conductive layers 122 of 121 are used as a plurality of electrodes, and the material of the strip-shaped transparent conductive layer 122 is preferably an ITO material.

Please continue to refer to the twelfth figure (d), and then form a conductive film layer 123 at both ends of each strip of transparent conductive layer 122 by a process such as screen printing, transfer printing, printing or coating. For each of the lap pads of the transparent conductive layer 122, it is worth noting that the dielectric film layer 121 and the conductive film layer 123 are preferably film materials having an opaque color, but the dielectric film layer 121 and the conductive film layer 123 are not required. The color dielectric inks of the same color code and the color conductive ink, that is, the colors of the dielectric film layer 121 and the conductive film layer 123 do not need to match each other. The front side of the dielectric substrate 120, whose final appearance will be as shown in Fig. 13, is neatly divided into the active area AA and the bezel area FA.

It is to be noted that, in the ninth embodiment, the plurality of strip-shaped transparent conductive layers 122 are formed as the plurality of electrodes corresponding to the twelfth figure (c), and the conductive film layer 123 is formed corresponding to the corresponding twelfth figure (d). As an implementation step of the lap pads of each strip of transparent conductive layer 122, the order of implementation may be interchanged, that is, when the process is performed, a conductive film layer 123 may be formed first as a lap pad of each strip of transparent conductive layer 122. Then, a plurality of strip-shaped transparent conductive layers 122 are formed on the lap pads as a plurality of electrodes, and the order of the implementation processes is not limited.

It should be noted that the above embodiments include the steps of forming the dielectric film layer to form the conductive film layer described in the first embodiment to the ninth embodiment, and the order of implementation may be interchanged, that is, when the process is performed. The formation of the conductive film layer and the formation of the dielectric film layer can be selected, and the order of the implementation process is not limited.

Please refer to the third figure, which is a flowchart of a method for fabricating the substrate structure for a touch panel of the present invention. In summary, the present invention provides a method for fabricating a substrate structure for a touch panel, which includes the following steps: Step 310: Providing a substrate, which may be a conductive substrate or a dielectric substrate, the substrate The surface is pre-divided into an active area and a border area; step 320: forming a dielectric film on the back surface of the substrate by a screen printing, transfer, printing or coating process The pattern has been pre-designed, and the pattern should be reserved in advance or not, including the conductive area, the excavation area, the hollow area, etc.; step 330: then the screen printing, transfer, printing or coating process, A conductive film is formed on the dielectric film, the conductive region, the cutout region, the hollow region, and the like on the frame region, and the color of the dielectric film and the conductive film are completely the same. It is worth noting that when the dielectric film When the color of the conductive film is exactly the same, it will produce a smooth, smooth, beautiful, concise, and slumped appearance on the front side of the substrate.

Further embodiments of the invention are provided as follows:

Embodiment 1 : A single-piece substrate structure for a four-wire resistive touch panel, comprising a conductive substrate having a conductive surface, the conductive surface having a frame region at an edge surrounding the four adjacent edges, the frame region A dielectric cutout region is formed by removing a portion of the conductive surface in the frame region of the two parallel opposite sides to expose a dielectric surface; a dielectric film, Formed on the conductive surface of another portion of the bezel region; and a conductive film formed on the dielectric surface exposed in the dielectric cutout region, The dielectric film has the same opaque color as the conductive film.

Embodiment 2: The substrate structure of Embodiment 1, wherein the dielectric film is an opaque dielectric ink, and the conductive film is an opaque conductive ink.

Embodiment 3: The substrate structure for a touch panel according to Embodiment 1, wherein the dielectric cutout is removed by an etching method to remove the conductive surface of the portion in the frame region of the two parallel opposite sides. Forming the dielectric surface, the dielectric film is formed in another part of the frame region by one of a printing method, a screen printing method, a transfer method, a printing method, and a coating method. The conductive film is formed on the conductive surface by a printing method, a screen printing method, a transfer method, a printing method and a coating method to form the exposed portion in the dielectric cutout region. On the dielectric surface.

Embodiment 4: The substrate structure of Embodiment 1, wherein the conductive substrate comprises a substrate layer and a conductive layer.

Embodiment 5: The substrate structure of Embodiment 4, wherein the material of the substrate layer is selected from the group consisting of a polycarbonate (PC) material, a polyethylene (PE) material, and a polyethylene terephthalate ( PET) material, a polynaphthalene (PEN) material, a polymethyl methacrylate (PMMA) material, a cellulose triacetate (TAC) material, a glass material, and a combination thereof.

Embodiment 6: The substrate structure of Embodiment 4, wherein the conductive layer is made of an indium tin oxide (ITO) material, a Fluorine Tin Oxide (FTO) material, and a tin-tin. One of an oxide (Antimony Tin Oxide, ATO) material, a carbon ink conductive material, and a combination thereof.

Embodiment 7: A method for fabricating a single-piece substrate structure for a four-wire resistive touch panel, comprising: providing a conductive substrate having a conductive surface, the conductive surface having a frame region at an edge surrounding the four adjacent edges; a portion of the conductive surface in the frame region of the two parallel opposite sides to expose a dielectric surface to form a dielectric cutout; forming a conductive surface on another portion of the bezel region a dielectric film; and a conductive film formed on the dielectric surface exposed in the dielectric cutout region, wherein the dielectric film has the same opaque color as the conductive film.

Embodiment 8: The manufacturing method of Embodiment 7, wherein the portion of the conductive surface in the frame region of the two parallel opposite sides is removed to expose a dielectric surface to form a The step of dielectric stripping is performed by an etch to form the dielectric cutout.

The manufacturing method of the seventh embodiment, wherein the step of forming the dielectric film on the conductive surface of another portion of the frame region is performed by a printing method, a screen printing method, One of a transfer method, a printing method, and a coating method to form the dielectric film, and the step of forming the conductive film on the dielectric surface exposed in the dielectric cutout is performed through a One of a printing method, a screen printing method, a transfer method, a printing method, and a plating method to form the conductive film.

Embodiment 10: The method according to Embodiment 7, wherein the dielectric film is an opaque dielectric ink, and the conductive film is an opaque conductive ink.

110‧‧‧ITO substrate

110a‧‧‧ITO conductive layer

110b‧‧‧electrode

111‧‧‧ dielectric film

113‧‧‧Electrical film layer

AA‧‧‧Action Area

Claims (10)

A conductive substrate structure for a four-wire resistive touch panel, comprising: a conductive substrate having a conductive surface, the conductive surface having a frame region at an edge surrounding the four adjacent sides, the frame region comprising a dielectric An excavation zone formed by removing a portion of the conductive surface in the frame region of the two parallel opposite sides to expose a dielectric surface; a dielectric film formed in the dielectric layer a conductive portion of another portion of the bezel region; and a conductive film formed on the dielectric surface exposed in the dielectric cutout region, wherein the dielectric region in the bezel region The film has the same opaque color as the conductive film. The conductive substrate structure of claim 1, wherein the dielectric film is an opaque dielectric ink, and the conductive film is an opaque conductive ink. The conductive substrate structure of claim 1, wherein the dielectric cutout removes the dielectric surface of the portion of the parallel region of the two parallel opposite sides by an etching method to expose the dielectric Forming a surface, the dielectric film is formed by another portion of the bezel region by one of a printing method, a screen printing method, a transfer method, a printing method, and a coating method. On the surface, the conductive film forms the dielectric surface exposed in the dielectric cutout by one of a printing method, a screen printing method, a transfer method, a printing method, and a coating method. on. The conductive substrate structure of claim 1, wherein the conductive substrate comprises a substrate layer and a conductive layer. The conductive substrate structure according to claim 4, wherein the material of the substrate layer is selected from the group consisting of a polycarbonate (PC) material, a polyethylene (PE) material, and a polyethylene terephthalate ( PET) material, a poly(ethylene naphthalene) (PEN) material, a polymethyl methacrylate (PMMA) material, a triacetate fiber One of a TAC material, a glass material, and a combination thereof. The conductive substrate structure according to claim 4, wherein the conductive layer is made of an indium tin oxide (ITO) material, a Fluorine Tin Oxide (FTO) material, a tantalum tin. One of an oxide (Antimony Tin Oxide, ATO) material, a carbon ink conductive material, and a combination thereof. A method for fabricating a conductive substrate structure for a four-wire resistive touch panel, comprising: providing a conductive substrate having a conductive surface having a frame region at an edge surrounding the four adjacent edges; a portion of the conductive surface of the side of the bezel to expose a dielectric surface to form a dielectric cutout; a dielectric film is formed on the conductive surface of another portion of the bezel; And forming a conductive film on the dielectric surface exposed in the dielectric cutout region, wherein the dielectric film in the frame region has the same opaque color as the conductive film. The manufacturing method of claim 7, wherein the step of removing a portion of the conductive surface in the frame region of the two parallel opposite sides to expose a dielectric surface to form a dielectric cutout is provided. The dielectric cutout is formed by an etching process. The manufacturing method of claim 7, wherein the step of forming the dielectric film on the conductive surface of another portion of the frame region is by a printing method, a screen printing method, One of a transfer method, a printing method, and a coating method to form the dielectric film, and the step of forming the conductive film on the dielectric surface exposed in the dielectric cutout is performed by printing One of a mode, a screen printing method, a transfer method, a printing method, and a coating method to form the conductive film. The manufacturing method of claim 7, wherein the dielectric film is an opaque dielectric ink, and the conductive film is an opaque conductive ink.