TWM608240U - Touch display device and touch panel - Google Patents

Abstract

A touch panel includes a transparent substrate, a touch sensing layer and a near field communication sensing layer. The transparent substrate includes a touch sensing area and a peripheral area that are commonly defined on the same surface of the transparent substrate. The peripheral area surrounds the touch sensing area. The touch sensing layer is located in the touch sensing area. The near field communication induction layer includes a light-transmitting wiring layer and an induction coil. The light-transmitting wiring layer is located in the touch sensing area, and the induction coil has low visibility characteristics, and is formed on the light-transmitting wiring layer.

Description

Touch display device and its touch panel

This creation is about a touch panel, especially a touch panel with a near field communication induction coil.

The application of traditional Near-Field Communication (NFC) technology is usually to arrange the NFC coil in the outer frame of the display screen, so that the device that supports NFC function can sense the above-mentioned NFC coil at close range and non-contact. Data transmission.

However, concealing the above-mentioned NFC coil in the outer frame of the display screen not only takes up space and is difficult to install, but is also unfavorable to the combination of a thin outer frame.

To this end, this creation proposes a touch display device and its touch panel to solve the above-mentioned difficulties mentioned in the prior art.

An embodiment of the present invention provides a touch panel. The touch panel includes a transparent substrate, a touch sensing layer and a near field communication sensing layer. The transparent substrate includes a touch sensing area and a peripheral area defined on the same surface of the transparent substrate. The peripheral area surrounds the touch sensing area. The touch sensing layer is located on the transparent substrate and located in the touch sensing area. The near field communication induction layer includes a light-transmitting wiring layer and at least one induction coil. The light-transmitting wiring layer is located in the touch sensing area of the transparent substrate, and the induction coil has low visibility characteristics and is formed on the light-transmitting wiring layer.

According to one or more embodiments of the present invention, in the above-mentioned touch panel, the near field communication sensing layer is formed on one surface of the transparent substrate and is laminated between the transparent substrate and the touch sensing layer.

According to one or more embodiments of the present invention, in the above-mentioned touch panel, the touch sensing layer is formed on one surface of the transparent substrate and is laminated between the transparent substrate and the near field communication sensing layer.

According to one or more embodiments of the present invention, in the above-mentioned touch panel, the induction coil includes a flexible circuit board, an inner wire portion, an outer wire portion and a bridge wire. The flexible circuit board is arranged at one end of the light-transmitting wiring layer. The inner loop line portion is formed on one surface of the light-transmitting wiring layer, and has a first end point and a second end point opposite to each other. Both the first end point and the second end point of the inner loop line portion extend from the light-transmitting wiring layer to a surface of the flexible circuit board. The outer loop line portion is formed on this surface of the light-transmitting wiring layer, surrounds the inner loop line portion, and has a third end point and a fourth end point opposite to each other. Both the third end point and the fourth end point of the inner loop line portion extend from the light-transmitting wiring layer to this surface of the flexible circuit board. The bridging wires are located on the other side of the flexible circuit board, and are respectively electrically connected to the first end of the inner loop line portion and the third end of the outer loop line portion through a through hole.

According to one or more embodiments of the present invention, in the above-mentioned touch panel, the induction coil is made of a light-permeable material, or the induction coil includes a circuit with a micron-level width.

An embodiment of the present creation is to provide a touch display device. The touch display device includes a display and a touch panel. The display includes a viewable area and a non-display area. The non-display area surrounds the visible area. The touch panel includes a transparent substrate, a touch sensing layer and a near field communication sensing layer. The transparent substrate is connected to the display and covers the visible area of the display. The touch sensing layer is laminated on the transparent substrate, and the orthographic projection of the touch sensing layer to the display is located in the visible area. The near field communication induction layer includes a light-transmitting wiring layer and at least one induction coil. The light-transmitting wiring layer is located on the transparent substrate and located in the touch sensing area, and the orthographic projection of the light-transmitting wiring layer to the display is located in the visible area. The induction coil has low visibility characteristics and is formed on the light-transmitting wiring layer.

According to one or more embodiments of the present invention, in the above-mentioned touch display device, the near field communication sensing layer is formed on one surface of the transparent substrate and is laminated between the transparent substrate and the touch sensing layer.

According to one or more embodiments of the present invention, in the above-mentioned touch display device, the touch sensing layer is formed on one surface of the transparent substrate and is laminated between the transparent substrate and the near field communication sensing layer.

According to one or more embodiments of the present invention, in the above-mentioned touch display device, the induction coil includes a flexible circuit board, an inner wire portion, an outer wire portion, and a bridge wire. The flexible circuit board is arranged at one end of the light-transmitting wiring layer. The inner loop line portion is formed on one surface of the light-transmitting wiring layer, and has a first end point and a second end point opposite to each other. Both the first end point and the second end point of the inner loop line portion extend from the light-transmitting wiring layer to a surface of the flexible circuit board. The outer loop line portion is formed on this surface of the light-transmitting wiring layer, surrounds the inner loop line portion, and has a third end point and a fourth end point opposite to each other. Both the third end point and the fourth end point of the inner loop line portion extend from the light-transmitting wiring layer to this surface of the flexible circuit board. The bridging wires are located on the other side of the flexible circuit board, and are respectively electrically connected to the first end of the inner loop line portion and the third end of the outer loop line portion through a through hole.

According to one or more embodiments of the present invention, in the above-mentioned touch display device, the induction coil is made of a light-permeable material, or the induction coil includes a circuit with a micron-level width.

In this way, through the structure of the above embodiments, the present creation arranges the near field communication induction coil in the visible area of the touch display device, which is not only convenient for installation, but also reduces the thickness and weight of the overall device, thereby facilitating the combination of a thinner frame , It also allows users to more intuitively implement NFC function sensing to a specific location in the touch display device, so as to complete the expected data transmission purpose.

The above description is only used to explain the problem to be solved by this creation, the technical means to solve the problem, and the effects produced by it, etc. The specific details of this creation will be introduced in detail in the following embodiments and related drawings.

The plural implementations of this creation will be disclosed in the following diagrams. For the sake of clarity, many practical details will be explained in the following description. However, those skilled in the art should understand that in the implementation of this creation part, these practical details are not necessary, and therefore should not be used to limit this creation. In addition, in order to simplify the drawings, some conventionally used structures and elements will be shown in a simple schematic manner in the drawings. In addition, for the convenience of readers, the size of each element in the drawings is not drawn according to the actual scale.

FIG. 1 is a schematic front view of the touch panel 200 according to an embodiment of the invention. Figure 2 is a cross-sectional view of Figure 1 along line AA. As shown in FIGS. 1 and 2, the touch panel 200 includes a transparent substrate 300, a near field communication sensing layer 400, and a touch sensing layer 500 stacked in sequence. The transparent substrate 300 includes a front surface 301 and a back surface 302 disposed oppositely. The back surface 302 of the transparent substrate 300 is jointly defined with a touch sensing area T (refer to the area enclosed by the central dotted line in Figure 1) and a peripheral area S (reference The area enclosed by the dashed outer line in Figure 1), and the peripheral area S surrounds the touch sensing area T. In this embodiment, the touch sensing area T is located at the center of the transparent substrate 300, and the peripheral area S corresponds or roughly corresponds to the peripheral edge position of the reverse surface 302 of the transparent substrate 300, and directly adjacently surrounds the touch sensing area T. The near field communication sensing layer 400 and the touch sensing layer 500 are both located on the reverse surface 302 of the transparent substrate 300, and both are disposed in the touch sensing area T. In this embodiment, the near field communication sensing layer 400 is laminated between the transparent substrate 300 and the touch sensing layer 500. Furthermore, the near field communication sensing layer 400 is directly on the transparent substrate 300 and directly on the transparent substrate 300. And the touch sensing layer 500.

More specifically, the near field communication induction layer 400 includes a light-transmitting wiring layer 410 and one or more induction coils 412. The light-transmitting wiring layer 410 is located in the touch sensing area T of the transparent substrate 300, and further, the light-transmitting wiring layer 410 is directly attached to the opposite surface 302 of the transparent substrate 300. The induction coils 412 are arranged on the top surface 411 of the light-transmitting wiring layer 410 at intervals, that is, on the side of the light-transmitting wiring layer 410 facing the transparent substrate 300.

It should be understood that the touch sensing layer 500 has sensing patterns (not shown in the figure) including electrodes with different axial directions. Because the sensing pattern of the touch sensing layer 500 is only located in the touch sensing area T, and the size of the sensing pattern is completely It conforms to the size of the touch sensing area T and is completely surrounded by the peripheral area S, so the touch sensing layer 500 is the range of the touch sensing area T.

For example, the transparent substrate 300 is, for example, glass or poly (methyl methacrylate) (PMMA). The light-transmitting wiring layer 410 includes a transparent or translucent plate, such as polymethyl methacrylate (PMMA), polycarbonate (PC), methyl styrene (MS), ring Cyclo-olefin polymer (COP), polystyrene (PS), polyethylene terephthalate (PET) or polyimide (polyimide) and other similar materials.

FIG. 3 is a front view of the induction coil 412 of the near field communication induction layer 400 of FIG. 2. Figure 4 is a cross-sectional view of Figure 3 along line BB. As shown in FIGS. 3 and 4, each induction coil 412 includes a flexible circuit board 420, an inner wire portion 430, an outer wire portion 440, and a bridge wire 450. The flexible circuit board 420 is disposed at one end of the light-transmitting wiring layer 410. The flexible circuit board 420 has a first surface 421 and a second surface 422 opposite to each other. The inner wire portion 430 is formed on the top surface 411 of the light-transmitting wiring layer 410. The inner loop has a first loop portion 431, a first end 432 and a second end 433. The first loop portion 431 is located on the top surface 411 of the light-transmitting wiring layer 410. The first end 432 and the second end 433 are respectively opposite ends of the first loop portion 431, and both the first end 432 and the second end 433 extend from the light-transmitting wiring layer 410 to the flexible circuit board 420 The first side 421. The outer wire portion 440 is formed on the top surface 411 of the light-transmitting wiring layer 410. The outer loop portion 440 has a second loop portion 441, a third end 442 and a fourth end 443. The second loop portion 441 is formed on the top surface 411 of the light-transmitting wiring layer 410 and partially surrounds the first loop portion 431. The third end 442 and the fourth end 443 are respectively opposite ends of the second loop portion 441, and both the third end 442 and the fourth end 443 extend from the light-transmitting wiring layer 410 to the flexible circuit board 420 First side 421. The bridging wire 450 is fixed on the second surface 422 of the flexible circuit board 420, and is electrically connected to the first end 432 of the inner wire portion 430 through the first through hole 460 in the flexible circuit board 420, and through the flexible circuit board 420. The second through hole 470 in the sexual circuit board 420 is electrically connected to the third terminal 442 of the outer wire portion 440.

The first end 432 of the inner coil part 430 of the induction coil 412 is connected to the NFC driving unit DR of the near field communication induction layer 400 through the flexible circuit board 420, and the fourth end of the outer coil part 440 of the induction coil 412 The point 443 is connected to the NFC driving unit DR through the flexible circuit board 420 so that the flexible circuit board 420 and the induction coil 412 form a complete and effective coil loop.

FIG. 5 is a cross-sectional view of the touch panel 201 according to an embodiment of the invention, and the cross-sectional position is the same as that of FIG. 2. As shown in FIG. 5, the touch panel 201 of this embodiment further includes a first adhesive layer 610 and a second adhesive layer 610. The first adhesive layer 610 is directly sandwiched between the transparent substrate 300 and the near field communication sensing layer 400 to fix the transparent substrate 300 and the near field communication sensing layer 400 to each other. The second adhesive layer 620 is directly sandwiched between the near field communication sensing layer 400 and the touch sensing layer 500 to fix the near field communication sensing layer 400 and the touch sensing layer 500 to each other. For example, the first adhesive layer 610 and the second adhesive layer 610 are Optical Clear Adhesive (OCA), however, the present invention is not limited to this type of optical adhesive.

FIG. 6 is a cross-sectional view of the touch panel 202 according to an embodiment of the invention, and the cross-sectional position is the same as that of FIG. 2. As shown in FIG. 6, the touch panel 202 of this embodiment is substantially the same as the touch panel 200 of FIG. 2. The difference is that the touch sensing layer 500 is formed on the opposite surface 302 of the transparent substrate 300 and is superimposed on the transparent substrate. Between the substrate 300 and the near field communication sensing layer 400. In this embodiment, the touch sensing layer 500 is directly located on the reverse surface 302 of the transparent substrate 300 and directly overlapped between the transparent substrate 300 and the near field communication sensing layer 400.

FIG. 7 is a cross-sectional view of the touch display device 10 according to an embodiment of the invention. As shown in FIG. 7, the touch display device 10 includes a display 100 and the aforementioned touch panel 200. The same surface of the display 100 is divided into a viewing area (VA) and a non-viewed area (NVA), and the non-display area NV surrounds the viewing area VA. The visible area VA of the display 100 corresponds to the pixel electrodes (not shown in the figure) of the display panel of the display 100 to provide the user with a display content. For example, but not limited to this, the display 100 is a liquid crystal display (LCD), an organic light emitting diode (OLED) display, a plasma display (PDP) or an electronic paper (e-paper)... etc. However, Since the display 100 is a conventional technique, it will not be repeated here.

The touch panel 200 is stacked on the display 100 and covers the visible area VA of the display 100 for the user to operate the touch panel 200 according to the content of the display 100. More specifically, the orthographic projection from the touch sensing layer 500 of the touch panel 200 to the display 100 is located in the visible area VA. The light-transmitting wiring layer 410 of the near field communication sensing layer 400 is located on the transparent substrate 300, and the orthographic projection of the light-transmitting wiring layer 410 to the display 100 is located in the visible area VA.

It should be understood that the area of the visible area VA of the display 100 is approximately the same as the area of the touch sensing area T of the touch panel 200. Therefore, the touch sensing area T of the touch panel 200 is the range of the visible area VA of the display 100.

However, it is not limited to the touch panel 200, and the touch panels 201 and 202 are also applicable to the touch display device 10 of the present invention.

In addition, in the above embodiments, more specifically, referring to Figures 3 and 7, the designer can further design the material and size (such as the diameter) of the induction coil 412, so that each induction coil 412 has a low Visibility characteristics, in other words, when the user looks at the display 100 from the front 301 of the transparent substrate 300 (Figure 7), because the induction coils 412 have low visibility characteristics, the induction coils 412 are visible from the visible area. The VA is still not easily recognized or noticed by the naked eye of the human body, and the presence of these induction coils 412 is ignored by the naked eye of the human body. Therefore, the near field communication sensor layer 400 produces a transparent or low-visibility effect in the touch display device 10.

In one embodiment, the induction coils 412 include light-transmissive materials, so that the induction coils 412 are transparent or light-transmissive. The light-permeable material, for example, transparent conductive oxide (Transparent conductor oxide, TCO), transparent conductive film (ITO), nano silver (Nano Silver), carbon nano tube (Carbon Nano Tube) or graphene (Graphene oxide) or metal mesh. The transparent conductive oxide is, for example, indium tin oxide, indium zinc oxide, or aluminum zinc oxide.

In another embodiment, the circuits of the induction coils 412 are miniaturized, so that the circuits of the induction coils 412 have a micron-level width (ie, diameter). However, this creation is not limited to this. The induction coil 412 can also use light-permeable materials and perform circuit miniaturization projects at the same time.

Furthermore, in this embodiment, the touch display device 10 is not limited to a handheld device, an embedded device, a stand-alone device, and so on. The handheld device is, for example, a handheld inventory machine, a tablet computer, and so on. The embedded device is, for example, a machine tool or a medical device or the like. The stand-alone device is, for example, a Point of Sale (POS) machine, an ATM machine, a self-checkout/ordering machine, or a large public information platform, etc.

In this way, through the structure of the above embodiments, the present creation arranges the near field communication induction coil in the visible area of the touch display device, which is not only convenient for installation, but also reduces the thickness and weight of the overall device, thereby facilitating the combination of a thinner frame , It also allows users to more intuitively implement NFC function sensing to a specific location in the touch display device, so as to complete the expected data transmission purpose.

Finally, the various embodiments disclosed above are not intended to limit the creation. Anyone who is familiar with this technique can make various changes and modifications without departing from the spirit and scope of the creation, and they can all be protected in this creation. In creation. Therefore, the scope of protection of this creation shall be subject to the scope of the attached patent application.

10: Touch display device 100: display 200, 201, 202: touch panel 300: Transparent substrate 301: front 302: Reverse 400: Near field communication sensing layer 410: Light-transmitting wiring layer 411: top surface 412: induction coil 420: flexible circuit board 421: The First Side 422: second side 430: inner ring line part 431: First lap line part 432: first endpoint 433: second endpoint 440: Outer Ring 441: The second loop 442: third endpoint 443: Fourth Endpoint 450: bridging wire 460: first via 470: second via 500: Touch sensing layer 610: The first optical glue 620: second optical glue AA, BB: line segment DR: NFC drive unit NVA: Non-display area S: Surrounding area T: Touch sensing area VA: Viewable area

In order to make the above and other purposes, features, advantages and embodiments of this creation more obvious and understandable, the description of the attached drawings is as follows: Figure 1 is a schematic front view of a touch panel according to an embodiment of the invention; Figure 2 is a cross-sectional view taken along line AA in Figure 1; Figure 3 is a front view of the induction coil of the NFC induction layer in Figure 2; Figure 4 is a cross-sectional view taken along line BB in Figure 3; Figure 5 is a cross-sectional view of the touch panel according to an embodiment of the invention, and the cross-sectional position is the same as that of Figure 2; Fig. 6 is a cross-sectional view of the touch panel according to an embodiment of the invention, and the cross-sectional position is the same as that of Fig. 2; and FIG. 7 is a cross-sectional view of the touch display device according to an embodiment of the invention.

300: Transparent substrate

301: front

302: Reverse

400: Near field communication sensing layer

410: Light-transmitting wiring layer

411: top surface

500: Touch sensing layer

AA: line segment

S: Surrounding area

T: Touch sensing area

Claims (10)

A touch panel, including: A transparent substrate including a touch sensing area and a peripheral area defined on the same surface of the transparent substrate, the peripheral area surrounding the touch sensing area; A touch sensing layer located on the transparent substrate and located in the touch sensing area; and A near field communication sensing layer, including: A light-transmitting wiring layer located on the transparent substrate and located in the touch sensing area; and At least one induction coil has low visibility characteristics and is formed on the light-transmitting wiring layer. The touch panel according to claim 1, wherein the near field communication sensing layer is formed on a surface of the transparent substrate, and is overlapped between the transparent substrate and the touch sensing layer. The touch panel according to claim 1, wherein the touch sensing layer is formed on a surface of the transparent substrate, and is overlapped between the transparent substrate and the near field communication sensing layer. The touch panel according to claim 1, wherein the induction coil includes: A flexible circuit board arranged at one end of the light-transmitting wiring layer; An inner loop line portion formed on a surface of the light-transmitting wiring layer and having a first end point and a second end point opposite to each other, the first end point and the second end point of the inner loop line portion All extend from the light-transmitting wiring layer to one side of the flexible circuit board; An outer loop portion formed on the surface of the light-transmitting wiring layer, surrounding the inner loop portion, and having a third end point and a fourth end point opposite to each other, the third end of the inner loop line portion Both the end point and the fourth end point extend from the light-transmitting wiring layer to the surface of the flexible circuit board; and A bridging wire is located on the other side of the flexible circuit board, and is electrically connected to the first end of the inner loop portion and the three ends of the outer loop portion through a through hole. The touch panel according to claim 1, wherein the induction coil is made of a light-permeable material, or the induction coil includes a circuit with a micron-level width. A touch display device includes: A display including a viewable area and a non-display area, the non-display area surrounds the viewable area; and A touch panel, including: A transparent substrate connected to the display and covering the visible area of the display; A touch sensing layer laminated on the transparent substrate, and the orthographic projection of the touch sensing layer to the display is located in the visible area; and A near field communication sensing layer, including a light-transmitting wiring layer and at least one induction coil, the light-transmitting wiring layer is located on the transparent substrate and located in the touch sensing area, wherein the light-transmitting wiring layer is connected to the front of the display The projection is located in the visible area, and the induction coil has low visibility characteristics and is formed on the light-transmitting wiring layer. The touch display device according to claim 6, wherein the near field communication sensing layer is formed on a surface of the transparent substrate, and is overlapped between the transparent substrate and the touch sensing layer. The touch display device according to claim 6, wherein the touch sensing layer is formed on a surface of the transparent substrate, and is overlapped between the transparent substrate and the near field communication sensing layer. The touch display device according to claim 6, wherein the induction coil includes: A flexible circuit board arranged at one end of the light-transmitting wiring layer; An inner loop line portion formed on a surface of the light-transmitting wiring layer and having a first end point and a second end point opposite to each other, the first end point and the second end point of the inner loop line portion All extend from the light-transmitting wiring layer to one side of the flexible circuit board; An outer loop portion formed on the surface of the light-transmitting wiring layer, surrounding the inner loop portion, and having a third end point and a fourth end point opposite to each other, the third end of the inner loop line portion Both the end point and the fourth end point extend from the light-transmitting wiring layer to the surface of the flexible circuit board; and A bridging wire is located on the other side of the flexible circuit board, and is electrically connected to the first end of the inner loop portion and the three ends of the outer loop portion through a through hole. The touch display device according to claim 6, wherein the induction coil is made of a light-permeable material; or, the induction coil includes a circuit with a micron-level width.

Images