TWM448025U - Single piece sheet-shaped projection type capacitive touch panel structure - Google Patents

Description

Single chip projection capacitive touch panel structure

The present invention relates to a touch panel structure and a manufacturing method thereof, and more particularly to a single chip projected capacitive touch panel structure and a manufacturing method thereof.

Today's touch technology has been widely used in various electronic devices as its input method because it does not require additional mouse, button or arrow keys, so as to achieve a trend toward thinner and lighter products. In other words, with the rise of information appliance products, touch panels have gradually replaced the old way of communicating with keyboards, mice and information products. Touch panel technology provides a user-friendly interface for general users. When operating a computer or electronic product, it can become more direct, simple, vivid, and interesting. The touch panel has a wide range of applications, including portable communication and information products (such as personal digital assistant PDA), financial/commercial systems, medical registration systems, monitoring systems, information navigation systems, and auxiliary teaching systems. Because of its simple operation, it increases the convenience of consumers.

In general, the touch panel can be roughly classified into a resistive type, a capacitive type, a piezoelectric type, an infrared type, and an ultrasonic type according to the sensing principle. The capacitive touch panel is provided with a transparent conductive material film on the surface of the glass as an in-plane conductor, and then a metal wire around the glass transmits a signal to an integrated circuit or an integrated circuit (IC) on the hard board. It is a touch sensor. If the external circuit board and the uppermost protective cover are further attached, the finished product is called a touch panel. When used, a uniform electric field is formed on the surface of the glass. When the user touches the surface of the glass with the fingertip, the capacitance changes due to the electrostatic reaction between the finger and the electric field, and according to this change, the coordinates of the position of the input point can be located.

Although the conventional capacitive touch panel is coated with a wear layer on the upper surface of the ITO layer, the durability of the wear layer cannot be effectively improved due to limitations in materials and thickness. Furthermore, even if the thickness of the wear layer is increased to 50 μm or more, the capacitive touch panel cannot be accurately touched. Furthermore, in all conventional projected capacitive touch panels, only an end point impedance of approximately 200 Ω can be provided, and a higher end point impedance cannot be provided.

The present invention provides a monolithic projected capacitive touch panel structure.

One embodiment of the present invention provides a monolithic sheet-shaped projected capacitive touch panel structure comprising: a substrate unit, a conductive unit and an insulating unit. The substrate unit includes a transparent substrate and a surrounding opaque layer formed on the bottom surface of the transparent substrate. The conductive unit includes a transparent conductive layer formed on a bottom surface of the transparent substrate and covering the surrounding opaque layer, and a surrounding electrode layer circumferentially formed on a bottom surface of the transparent conductive layer. The insulating unit includes an insulating layer formed on a bottom surface of the transparent conductive layer and covering the surrounding electrode layer.

The beneficial effects of the present invention may be that the single-chip projected capacitive touch panel structure and the manufacturing method thereof provided by the present embodiment can increase the creation by the design of “setting the transparent substrate on the uppermost layer”. Durability.

In order to further understand the features and technical contents of the present invention, please refer to the following detailed description and drawings of the present invention. However, the drawings are only for reference and explanation, and are not intended to limit the creation.

[First Embodiment]

Referring to FIG. 1 to FIG. 4 , the first embodiment of the present invention provides a monolithic sheet-shaped projected capacitive touch panel structure, including: a substrate unit 1, a conductive unit 2, an insulating unit 3, and a signal. Transmission unit 4.

First, as shown in FIG. 1 to FIG. 3, the substrate unit 1 includes a transparent substrate 10 and a surrounding opaque layer 11 (for example, a black frame) formed around the bottom surface of the transparent substrate 10. For example, the thickness H of the transparent substrate 10 may be between approximately 0.7 mm and 1.5 mm. The transparent substrate 10 can be one of a glass substrate and a plastic substrate. When the transparent substrate 10 is a glass substrate, the top mask of the transparent substrate 10 has a touch surface 100 for providing a touch to the user. In addition, when the transparent substrate 10 is a plastic substrate, the plastic substrate has a hardened coating (not shown) formed on the top surface of the plastic substrate, and the touch surface 100 for providing a touch to the user is Forming a hardened coating (not shown) on the top surface, wherein the plastic substrate can be polymethylmethacrylate (PMMA), polyvinyl chloride (Poly Vinyl Chloride, PVC), polyethylene terephthalic acid Polyester Terephthalate (PET), Cyclic Olefin Copolymer (COC), Polycarbonate (PC), Polyethylene (PE), Polypropylene (PP), Polystyrene (Poly Styrene, PS), and one of polyimide (PI), and the hard coat layer (not shown) may be cerium oxide. Therefore, the designer can selectively use the glass substrate or the plastic substrate having the surface formed with the hardened coating as the transparent substrate 10 according to different use requirements. However, the transparent substrate 10 used in the present invention is not limited to the examples given in the first embodiment described above.

Furthermore, as shown in FIG. 1 to FIG. 3, the conductive unit 2 includes a formation. a transparent conductive layer 20 on the bottom surface of the transparent substrate 10 and covering the surrounding opaque layer 11 and a surrounding electrode layer 21 formed on the bottom surface of the transparent conductive layer 20, wherein the conductive unit 2 can be touched after being energized A surface capacitance is formed on the touch surface 100, and the touch position of the user's finger is determined by detecting the amount of surface capacitance change when the user's finger touches the surface 100. Further, the end point resistance R measured between the opposite side ends S of the surrounding electrode layer 21 may be between 2000 Ω and 2500 Ω, and the optimum end point resistance R is 2300 Ω or more. Moreover, when the user looks directly at the transparent substrate 10, since the area of the surrounding opaque layer 11 can be larger than the area of the surrounding electrode layer 21, the surrounding opaque layer 11 can completely cover the surrounding electrode layer 21, Therefore, the present invention does not require the use of an additional mechanism design to shield the surrounding electrode layer 21. For example, the transparent conductive layer 20 can be an indium tin oxide (ITO) conductive layer, a carbon nanotube (CNT) conductive layer, a polymer conductive layer, a graphene conductive layer, and a nano layer. One of the silver-colored conductive layers. In addition, the transparent conductive layer 20 may also be a composite conductive layer composed of two or more conductive materials according to different usage requirements. For example, the transparent conductive layer 20 may be composed of a conductive polymer material and a graphene material. The first composite conductive layer and one of the second composite conductive layers composed of a conductive polymer material and a carbon nanotube material. Further, the surrounding electrode layer 21 can be made of a conductive material such as silver paste or metal thin wires. However, the transparent conductive layer 20 and the surrounding electrode layer 21 used in the present invention are not limited to the examples of the first embodiment described above.

Further, the insulating unit 3 includes an insulating layer 30 formed on the bottom surface of the transparent conductive layer 20 and covering the surrounding electrode layer 21. For example, the insulating layer 30 can be a protective layer, a hardened coating, polyethylene terephthalate (polyethylene Terephthalate, PET) or any kind of film, however, the insulating layer 30 used in the present invention is not limited to the example of the first embodiment described above.

Furthermore, the signal transmission unit 4 includes at least one signal transmission line 40 disposed between the surrounding electrode layer 21 and the insulating layer 30 and electrically connected to the surrounding electrode layer 21. For example, the signal transmission line 40 can be a flexible cable or any transmission line for signal transmission. However, the signal transmission line 40 used in the present invention is not limited to the example of the first embodiment.

Further, as shown in FIG. 1 to FIG. 3, the transparent substrate 10, the transparent conductive layer 20 and the insulating layer 30 each have an outer surrounding surface (101, 201, 301), wherein the bottom surface of the transparent substrate 10 has an adjacent transparent surface. The outer peripheral surface 101 of the substrate 10 and corresponding to the bottom end of the surrounding opaque layer 11 surrounds the region 102. The top mask of the transparent conductive layer 20 has an outer surrounding surface 201 adjacent to the transparent conductive layer 20 and corresponds to the surrounding shape. The top end of the light transmissive layer 11 surrounds the region 202, and the surrounding opaque layer 11 is formed between the bottom end surrounding region 102 of the transparent substrate 10 and the top end surrounding region 202 of the transparent conductive layer 20. In addition, the bottom surface of the transparent conductive layer 20 has an outer surrounding surface 201 adjacent to the transparent conductive layer 20 and corresponds to the bottom end surrounding area 203 of the surrounding electrode layer 21. The top mask of the insulating layer 30 has an outer surrounding adjacent to the insulating layer 30. The surface 301 and corresponding to the top end of the surrounding electrode layer 21 surround the region 302, and the surrounding electrode layer 21 is formed between the bottom end surrounding region 203 of the transparent conductive layer 20 and the top end surrounding region 302 of the insulating layer 30. However, the position where the surrounding opaque layer 11 and the surrounding electrode layer 21 are disposed is not limited to the example of the first embodiment described above.

Furthermore, in conjunction with FIG. 1 and FIG. 4, FIG. 4 only shows half of the line surrounding the electrode layer 21, and the main series of resistors are 6 in series. At the office. The surrounding electrode layer 21 includes a base layer 210, a plurality of first conductive segments 211 disposed on the base layer 210 and arranged in a surrounding shape, a plurality of disposed on the base layer 210 and surrounding the plurality of first conductive segments a second conductive segment 212 of the 211, a plurality of third conductive segments 213 disposed on the base layer 210 and surrounding the plurality of first conductive segments 211, and a plurality of disposed on the base layer 210 and surrounding the plurality of a second conductive section 212 and a fourth conductive section 214 of the plurality of third conductive sections 213, and a plurality of fifth conductive sections 215 disposed on the base layer 210 and surrounding the plurality of fourth conductive sections 214 . In addition, each of the second conductive segments 212 has a first conductive portion 2121 between each of the two corresponding third conductive segments 213 and an inward extending from the first conductive portion 2121 and corresponding to two corresponding portions. The second conductive portion 2122 between the first conductive segments 211. However, the surrounding electrode layer 21 used in the present invention is not limited to the example of the first embodiment described above.

[Second embodiment]

As shown in FIG. 5 , the second embodiment of the present invention provides a single-chip projected capacitive touch panel structure, including: a substrate unit 1, a conductive unit 2, an insulating unit 3, and a signal transmission unit 4. . It can be seen from the comparison between FIG. 5 and FIG. 3 that the second embodiment of the present invention is the most different from the first embodiment in that, in the second embodiment, the single-chip projected capacitive touch panel structure further includes: an auxiliary The unit 5 includes at least two auxiliary coating layers 50 respectively formed on the top surface of the transparent substrate 10 and the bottom surface of the insulating layer 30, wherein each of the auxiliary coating layers 50 may be an optical film for improving transmittance. 50A and one of the explosion-proof film 50B for improving safety, and both the optical film 50A and the explosion-proof film 50B can be made of PET. Furthermore, depending on the needs of use, only optical film One of the 50A and the explosion-proof film 50B may be formed on the top surface of the transparent substrate 10, and only one of the optical film 50A and the explosion-proof film 50B may be formed on the bottom surface of the insulating layer 30. However, the auxiliary coating 50 used in the present invention is not limited to the examples given in the second embodiment described above.

[Third embodiment]

Referring to FIG. 6 , a third embodiment of the present invention provides a single-chip projected capacitive touch panel structure including: a substrate unit 1 , a conductive unit 2 , an insulating unit 3 , and a signal transmission unit 4 . . The comparison between FIG. 6 and FIG. 3 shows that the third embodiment of the present invention is the biggest difference from the first embodiment in that, in the third embodiment, the single-chip projected capacitive touch panel structure further includes: an auxiliary The unit 5 includes at least two auxiliary coating layers 50 respectively formed on the top surface of the transparent substrate 10 and the bottom surface of the insulating layer 30, wherein each of the auxiliary coating layers 50 includes an optical film 50A for enhancing transmittance. And an explosion-proof film 50B for improving safety, and the optical film 50A and the explosion-proof film 50B are stacked on each other. Furthermore, one of the optical film 50A and the explosion-proof film 50B may be formed on the top surface of the transparent substrate 10 first, and one of the optical film 50A and the explosion-proof film 50B may be used first according to different usage requirements. The bottom surface of the insulating layer 30 is formed. However, the auxiliary coating 50 used in the present creation is not limited to the examples given in the third embodiment described above.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the patents of the present invention. Therefore, the equivalent technical changes that are made by using the present specification and the contents of the drawings are included in the scope of the present invention.

1‧‧‧Substrate unit

10‧‧‧Transparent substrate

100‧‧‧Touch surface

101‧‧‧ outer surrounding surface

102‧‧‧Bottom surrounding area

11‧‧‧ surrounding opaque layer

H‧‧‧thickness

2‧‧‧Conducting unit

20‧‧‧Transparent conductive layer

201‧‧‧ outer surrounding surface

202‧‧‧Top area around

203‧‧‧ bottom area around the area

21‧‧‧round electrode layer

210‧‧‧ basal layer

211‧‧‧First conductive section

212‧‧‧Second conductive section

2121‧‧‧First Conductive Department

2122‧‧‧Second Conductive Department

213‧‧‧ Third conductive section

214‧‧‧fourth conductive section

215‧‧‧ fifth conductive section

S‧‧‧ side

R‧‧‧Endpoint Impedance

3‧‧‧Insulation unit

30‧‧‧Insulation

301‧‧‧ outer surrounding surface

302‧‧‧Top area around

4‧‧‧Signal transmission unit

40‧‧‧Signal transmission line

5‧‧‧Auxiliary unit

50‧‧‧Auxiliary coating

50A‧‧‧Optical film

50B‧‧‧Explosion-proof membrane

FIG. 1 is a perspective exploded view showing the structure of a single-chip projected capacitive touch panel according to a first embodiment of the present invention.

FIG. 2 is a schematic perspective view showing the structure of a single-chip projected capacitive touch panel according to the first embodiment of the present invention.

3 is a side cross-sectional view showing the structure of a single-piece, sheet-shaped projected capacitive touch panel according to the first embodiment of the present invention.

4 is a top plan view of a surrounding electrode layer of the monolithic sheet-shaped projected capacitive touch panel structure according to the first embodiment of the present invention.

FIG. 5 is a side cross-sectional view showing the structure of a single-chip projected capacitive touch panel according to a second embodiment of the present invention.

FIG. 6 is a side cross-sectional view showing the structure of a single-chip projected capacitive touch panel according to a second embodiment of the present invention.

1‧‧‧Substrate unit

10‧‧‧Transparent substrate

100‧‧‧Touch surface

101‧‧‧ outer surrounding surface

102‧‧‧Bottom surrounding area

11‧‧‧ surrounding opaque layer

2‧‧‧Conducting unit

20‧‧‧Transparent conductive layer

201‧‧‧ outer surrounding surface

202‧‧‧Top area around

203‧‧‧ bottom area around the area

21‧‧‧round electrode layer

S‧‧‧ side

R‧‧‧Endpoint Impedance

3‧‧‧Insulation unit

30‧‧‧Insulation

301‧‧‧ outer surrounding surface

302‧‧‧Top area around

4‧‧‧Signal transmission unit

40‧‧‧Signal transmission line

Claims (10)

A monolithic sheet-shaped projected capacitive touch panel structure comprising: a substrate unit comprising a transparent substrate and a surrounding opaque layer formed on the bottom surface of the transparent substrate; a conductive unit The invention comprises a transparent conductive layer formed on a bottom surface of the transparent substrate and covering the surrounding opaque layer, and a surrounding electrode layer formed on the bottom surface of the transparent conductive layer; and an insulating unit including a An insulating layer formed on a bottom surface of the transparent conductive layer and covering the surrounding electrode layer. The monolithic sheet-shaped projected capacitive touch panel structure according to claim 1, wherein the transparent substrate has a thickness of between 0.7 mm and 1.5 mm, and the transparent substrate has a glass substrate and a surface. One of the hard coated plastic substrates. The monolithic sheet-shaped projected capacitive touch panel structure according to claim 1, wherein the transparent conductive layer is an indium tin oxide conductive layer, a carbon nanotube conductive layer, a polymer conductive layer, and graphite. One of an ene conductive layer and a nano silver conductive layer. The monolithic sheet-shaped projected capacitive touch panel structure according to claim 1, wherein the transparent conductive layer is a first composite conductive layer composed of a conductive polymer material and a graphene material, and a One of a second composite conductive layer composed of a conductive polymer material and a carbon nanotube material. The monolithic sheet-shaped projected capacitive touch panel structure according to claim 1, wherein the surrounding electrode layer comprises a base layer, a plurality of first conductive layers disposed on the base layer and arranged in a surrounding shape. a plurality of segments disposed on the base layer and surrounding the plurality of first conductive segments a conductive segment, a plurality of third conductive segments disposed on the base layer and surrounding the plurality of first conductive segments, a plurality of disposed on the base layer and surrounding the plurality of second conductive segments and the plurality of a fourth conductive segment of the third conductive segment, and a plurality of fifth conductive segments disposed on the base layer and surrounding the plurality of fourth conductive segments, and each of the second conductive segments has a a first conductive portion between each of the two corresponding third conductive segments and a second conductive portion extending inwardly from the first conductive portion and located between the two corresponding first conductive segments. The monolithic sheet-shaped projected capacitive touch panel structure of claim 1, wherein the transparent substrate, the transparent conductive layer and the insulating layer each have an outer surrounding surface, wherein a bottom surface of the transparent substrate has a Adjacent to the outer surrounding surface of the transparent substrate and corresponding to the bottom end surrounding area of the surrounding opaque layer, the top mask of the transparent conductive layer has the outer surrounding surface adjacent to the transparent conductive layer and corresponding to the surrounding The top end of the opaque layer surrounds the region, and the surrounding opaque layer is formed between the bottom end surrounding region of the transparent substrate and the top surrounding region of the transparent conductive layer, wherein the bottom surface of the transparent conductive layer Having a peripheral surrounding surface adjacent to the transparent conductive layer and corresponding to a bottom end surrounding region of the surrounding electrode layer, the top mask of the insulating layer having the outer surrounding surface adjacent to the insulating layer and corresponding to the surrounding electrode The top end of the layer surrounds the area, and the surrounding electrode layer is formed between the bottom end surrounding area of the transparent conductive layer and the top surrounding area of the insulating layer. The monolithic sheet-shaped capacitive touch panel structure of claim 1, further comprising: an auxiliary unit comprising at least two top surfaces respectively formed on the transparent substrate and the insulating layer An auxiliary coating on the bottom surface, wherein each auxiliary coating can be an optical film and an anti-proof layer One of the two films. The monolithic sheet-shaped capacitive touch panel structure of claim 1, further comprising: an auxiliary unit comprising at least two top surfaces respectively formed on the transparent substrate and the insulating layer An auxiliary coating on the bottom surface, wherein each of the auxiliary coatings comprises an optical film and an explosion-proof film, and the optical film and the explosion-proof film are stacked on each other. The monolithic sheet-shaped projected capacitive touch panel structure according to claim 1, wherein the measured end point impedance between the opposite side ends of the surrounding electrode layer is between 2000 Ω and 2500 Ω. between. The monolithic sheet-shaped capacitive touch panel structure of claim 1, further comprising: a signal transmission unit, comprising at least one disposed between the surrounding electrode layer and the insulating layer and electrically The signal transmission line is connected to the surrounding electrode layer.