TWI739073B - Electric-heating apparatus and touch device therein - Google Patents

Abstract

A touch device is provided. The touch device includes a substrate, a light-emitting element, a light-shielding plate, a sensing board, and a casing. The light-emitting element is disposed on the substrate. The light-shielding plate is disposed on the substrate, wherein the light-shielding plate has a first opening, and the light-emitting element is located in the first opening. The sensing board is disposed on the light-shielding plate, and is electrically connected to the substrate, wherein the sensing board has a second opening, and the first opening and the second opening overlap. The light-passing board is disposed on the sensing board, and covers the first opening and the second opening.

Description

Electric heating equipment and its touch control device

The present invention relates to an electric heating device and a touch device thereof, and more particularly to a touch device including a sensor board provided with an opening.

With the development of technology, touch technology has been applied to various electronic products to provide users with a better operating experience. The sensor of the existing touch device usually embeds the conductive circuit in the light-transmitting flexible board, and then printing the light-blocking ink or paint on the aforementioned flexible board, leaving the unprinted part as a pattern that needs to be light-transmissive. Since the flexible board needs to use special materials with specific light transmittance, and needs to be printed, the cost of the manufacturing process is relatively high, and it is difficult to reduce the overall size. In addition, in order to display the pattern of the touch device, a light-emitting diode (LED) or other similar lighting device needs to be installed under the sensor. However, the area illuminated by the lighting device often has a gap with the originally designed range.

In order to solve the above-mentioned problem, some embodiments of the present invention provide a touch device, which includes a substrate, a light-emitting element, a light shield, a sensor plate, and a light-transmitting plate. The light-emitting element is arranged on the aforementioned substrate. The shading member is disposed on the substrate, wherein the shading member has a first opening, and the light-emitting element is located in the first opening. The sensing plate is disposed on the shading member and electrically connected to the substrate, wherein the sensing plate has a second opening, and the first opening overlaps the second opening. The light-transmitting plate is arranged on the sensor plate and covers the first opening and the second opening.

In some embodiments, the aforementioned touch device further includes a film, which is disposed between the aforementioned sensor plate and the aforementioned light-transmitting plate. The pattern is formed on the film, and the light emitted by the light-emitting element can penetrate the film and display the pattern. In some embodiments, the pattern is formed on the aforementioned light-transmitting plate, and the light emitted by the aforementioned light-emitting element can penetrate the aforementioned light-transmitting plate and display the aforementioned pattern.

In some embodiments, the aforementioned induction board further includes an induction circuit surrounding the aforementioned second opening, wherein the aforementioned induction circuit includes a plurality of contacts, and the aforementioned contacts are arranged in parallel. In some embodiments, the aforementioned substrate further includes a first connector, the aforementioned sensor board further includes a second connector, and the aforementioned first connector is electrically connected to the aforementioned second connector. The shading member further has a hole, and the first connecting member and the second connecting member are electrically connected through the hole.

In some embodiments, the aforementioned sensor board further includes a first sensor board and a second sensor board. The aforementioned first sensor board is located inside the opening of the aforementioned second sensor board and is electrically isolated from the aforementioned second sensor board.

Some embodiments of the present invention provide an electric heating device, including a main body, a heating device, and a touch device, wherein the heating device is disposed in the main body. The touch device is arranged in the aforementioned body and controls the operating state of the heating device. The touch device includes: a substrate, a plurality of light-emitting elements, a light shield, a sensor board, and a light-transmitting board. The light-emitting element is arranged on the aforementioned substrate. The shading member is disposed on the substrate, wherein the shading member has a plurality of first openings, and the light-emitting element is correspondingly located in the first opening. The sensing plate is disposed on the shading member and electrically connected to the substrate, wherein the sensing plate has a plurality of second openings, and the first openings and the second openings overlap correspondingly. The light-transmitting plate is arranged on the sensor plate and covers the first opening and the second opening.

In order to make the above and other objectives, features and advantages of the present invention more comprehensible, preferred embodiments are listed below in conjunction with the accompanying drawings, which are described in detail as follows.

The touch device according to the embodiment of the present invention will be described below. However, it can be easily understood that the embodiments of the present invention provide many suitable inventive concepts and can be implemented in a wide variety of specific backgrounds. The specific embodiments disclosed are only used to illustrate the use of the present invention in a specific method, and are not used to limit the scope of the present invention.

Unless otherwise defined, all terms used here (including technical and scientific terms) have the same meanings commonly understood by the general artisans to whom the disclosures in this article belong. It is understandable that these terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning consistent with the relevant technology and the background or context of this disclosure, and not in an idealized or overly formal way. Interpretation, unless specifically defined here.

Please refer to FIG. 1 first, which shows a three-dimensional schematic diagram of a touch device 10 according to an embodiment of the present invention. It should be noted that the touch device 10 in this embodiment can be installed in various electronic devices, and can sense external forces, generate electrical signals and transmit them to the control unit (not shown) in the electronic device. . The aforementioned control unit can switch the operating state of the electronic device and/or display different patterns according to the aforementioned electrical signal, so as to achieve the touch function.

Please refer to FIG. 2. FIG. 2 shows an exploded view of the touch device 10 of FIG. 1. In this embodiment, the touch device 10 includes a substrate 11, a light-emitting element 12, a light shielding member 13, a sensor plate 14, a light-transmitting plate 15 and a film 16. For example, the substrate 11 may be a printed circuit board (PCB) or any other substrate provided with circuits. A first connecting member 111 is provided on the substrate 11 to be electrically connected to the sensor board 14 of the touch device 10. The light emitting element 12 is disposed on the substrate 11, wherein the light emitting element 12 may be a light emitting diode (LED) or any other element that can emit light. The shading member 13 is disposed on the substrate 11 and has a first opening 131 penetrating the shading member 13, wherein the light-emitting element 12 is disposed in the first opening 131 so that the light L (Figure 3) emitted by the light-emitting element 12 can be It is transmitted to the outside through the light shielding member 13.

The sensing plate 14 is disposed on the light shielding member 13, wherein the sensing plate 14 has a second opening 141 corresponding to the first opening 131 of the light shielding member 13. For example, as shown in FIG. 3, viewed from a vertical direction (Z-axis), the second opening 141 substantially overlaps the first opening 131. In addition, the sensing plate 14 further includes a sensing circuit 142 disposed around the second opening 141 to sense the force exerted on the sensing plate 14 by the outside world (for example, a user). When the sensing circuit 142 senses the proximity of the finger, the capacitance of the inductive capacitor will change, and the sensing circuit 142 will generate an electrical signal. The sensing board 14 is further provided with a second connecting member 143, which is electrically connected to the first connecting member 111 through the hole 132 of the shading member 13, so that the sensing circuit 142 is electrically connected to the circuit (not shown) in the substrate 11, and then The electrical signal is transmitted to the control unit provided in the electronic device, so that the electronic device can perform various operations according to the aforementioned electrical signal.

For example, the first connecting piece 111 and the second connecting piece 143 may be connectors, fixed conductors (for example, metal bridges) or elastic contact elements (for example: metal springs, conductive rubber, cables, flexible cables). Line (flexible flat cable; FFC) and flexible printed circuit board (flexible printed circuit board; FPC), etc.). In this embodiment, the first opening 131 of the shading member 13 is disposed in the center of the shading member 13, and the hole 132 is disposed beside the first opening 131. However, the first opening 131 and the hole 132 can also be arranged at any other suitable positions in the shading member 13 according to requirements.

In addition, the film 16 is disposed on the sensor board 14, wherein the film 16 is made of, for example, a transparent and light-guiding material, so that the light emitted by the light-emitting element 12 can pass through the film 16. In this embodiment, the pattern 17 is formed on the film 16, wherein the pattern 17 can be formed on the film 16 by printing, spraying or any other suitable method, so that after the light passes through the film 16, all or part of the pattern 17 is displayed. pattern. In addition, the light-transmitting plate 15 is disposed on the film 16. For example, the light-transmitting plate 15 may be ceramic glass or any other transparent material with a specific hardness, so as to protect the touch device 10 and allow light to pass through at the same time.

Please refer to FIG. 4, which shows an exploded schematic diagram of a touch device 10A according to another embodiment of the present invention. In this embodiment, the film 16 can be omitted, and the pattern 17 can be directly formed on the light-transmitting plate 15 by printing or sintering, so as to reduce the overall thickness of the touch device 10. Regardless of whether the pattern 17 is formed on the film 16 or the light-transmitting plate 15, if the pattern 17 is not formed on the sensor plate 14, the manufacturing process of the sensor plate 14 can be simplified. In addition, the induction plate 14 can be made of non-transparent materials, and other materials with lower cost or higher strength can be used as required.

Figures 5A to 5D show schematic top views of sensor panels according to some embodiments of the invention. As shown in FIG. 5A, the sensing circuit 142A of the sensing board 14A is disposed around the second opening 141, wherein the sensing circuit 142A has a contact 144A, so that the sensing circuit 142A senses the capacitance of the sensing capacitor when the finger approaches. The value changes, and the generated electrical signal is transmitted to the circuit (not shown) of the substrate 11. In some other embodiments, the sensing circuit may have a plurality of contacts. As shown in FIG. 5B, the sensing circuit 142B is disposed around the second opening 141 and is divided into two parts. Both parts of the sensing circuit 142B have contacts 144B. It should be understood that the aforementioned contact 144B is electrically connected to the circuit of the substrate 11 in a parallel manner. In this way, even if one of the contacts 144B fails, electrical signals can still be transmitted through the other non-failed contact, so that the touch device can maintain normal operation, thereby reducing the failure rate of the touch device.

In addition, the sensing circuit can also be designed into different shapes according to design requirements. As shown in FIG. 5C, the sensing circuit 142C is arranged in a triangle around the second opening 141 and is divided into three parts. The three parts of the sensing circuit 142C all have contacts 144C. Furthermore, as shown in FIG. 5D, the sensing circuit 142D is arranged in a rectangle around the second opening 141 and is divided into four parts. The four parts of the sensing circuit 142D all have contacts 144D. It is understandable that the more parts the sensing circuit is divided into (that is, the more contacts the sensing circuit has), the lower the probability of failure of the touch device. In addition, it should be noted that although the above embodiments list various examples of the shape of the induction circuit and the number of contacts, those skilled in the art to which the present invention pertains can determine the shape and number of contacts of the induction circuit according to their needs. Any combination.

Fig. 6 shows a schematic top view of an electric heating device 1 according to an embodiment of the present invention. The electric heating device 1 includes a touch device 10', a main body 20, and a heating device 30, and the heating device 30 is disposed in the main body 20. For example, the heating device 30 may be a resistor, and generates heat energy by applying electric current. However, the heating device 30 may be any other device that can generate heat energy. The touch device 10' is disposed in the main body 20, and the detailed structure of the touch device 10' will be further described in conjunction with FIG. 6 below. The touch device 10' is used to control the operating state of the heating device 30 (for example, whether to operate to generate heat), or to control parameters such as the intensity of the heating device 30 to generate heat. In addition, the touch device 10' can also display different information according to the state of the heating device 30. It should be understood that although the touch device 10' is used in the electric heating device 1 in this embodiment, the touch device 10' can also be provided in other electronic devices, and can be used to control the operating state of the aforementioned electronic devices. .

Fig. 7 shows an exploded schematic diagram of the touch device 10' of Fig. 6. As shown in Figure 7, the touch device 10' includes a substrate 11', a plurality of light-emitting elements 12', a light shielding member 13', a sensor board 14', a light-transmitting plate 15 and a film 16'. The aforementioned light-emitting element 12' is provided on the substrate 11'. The shading member 13' is also disposed on the substrate 11', and has a plurality of first openings 131' penetrating the shading member 13'. In this embodiment, the first opening 131' itself is rectangular, and the first openings 131' are arranged in a specific manner (for example, they are arranged in a figure of eight to display numbers). In some other embodiments, the first openings 131' can be circular or other arbitrary shapes, and the first openings 131' can be arbitrarily arranged according to specific display requirements. The light-emitting elements 12' are respectively arranged in the first openings 131', so that the light emitted by the light-emitting elements 12' can be transmitted to the outside through the shading member 13'.

The sensing plate 14' is disposed on the light shielding member 13', wherein the sensing plate 14' has a plurality of second openings 141', respectively corresponding to the aforementioned first openings 131' of the light shielding member 13'. In other words, viewed from the vertical direction (Z axis), each second opening 141' will substantially overlap the corresponding first opening 131'. In addition, the sensing board 14' includes a sensing circuit 142' disposed around the second opening 141' to sense that when the outside world (for example, a user) approaches the sensing board 14' with a finger, the capacitance of the sensing capacitor will change. And generate electrical signals. The sensing board 14' is further provided with a second connecting member (not shown), which is electrically connected to the first connecting member 111' provided on the substrate 11' through the hole 132' of the shading member 13'.

In addition, the film 16' is disposed on the sensor board 14', wherein the film 16' is made of, for example, a transparent material, so that the light emitted by the light-emitting element 12' can pass through the film 16'. A pattern 17' is formed on the film 16'. In addition, the light-transmitting plate 15 is provided on the film 16'. For example, the light-transmitting plate 15 may be ceramic glass or any other transparent material with a specific hardness, so as to protect the touch device 10' and allow light to pass through at the same time.

Figure 8 shows an exploded schematic diagram of a touch device 10" according to another embodiment of the present invention. It should be noted that the touch device 10" may include the same or similar elements as the touch device 10' shown in Figure 6 In the following, the same or similar elements will be denoted by the same or similar reference numerals and will not be described in detail. The difference between the touch device 10" and the touch device 10' shown in FIG. 7 is that the touch device 10" has a first sensor board 14A' and a second sensor board 14B', and the first sensor board 14A' And the second sensing board 14B' is provided with sensing circuits 142' and 1422, respectively. In this embodiment, the first sensor plate 14A' is disposed inside the second sensor plate 14B', that is, inside the opening 141B of the second sensor plate 14B'. In response to the arrangement of the first sensing plate 14A' and the second sensing plate 14B', two first connecting members 111A, 111B are provided on the substrate 11', respectively passing through the holes 132A, 132B of the shading member 13" and the first sensing plate 14A' and the second sensor board 14B' are electrically connected. In other words, the first sensor board 14A' is electrically isolated from the second sensor board 14B'. For example, when the first sensor board 14A' is in contact, only the first sensor board 14A' One sensor board 14A' generates electrical signals and transmits them to the circuit (not shown) on the substrate 11', while the second sensor board 14B' does not generate electrical signals, and vice versa.

Compared with a touch device with only a single sensor board, a touch device with multiple sensor boards can control multiple parameters at the same time, thereby achieving a more complex control effect. It should be noted that although the arrangement of the first sensor board 14A' and the second sensor board 14B' is illustrated in this embodiment, this arrangement is only an example and is not intended to limit the present invention. Those with ordinary knowledge in the technical field to which the present invention pertains can adjust the number, position, and/or controlled parameters of the sensor panels according to different needs.

In summary, the embodiment of the present invention provides a touch device including a sensor panel provided with an opening. Compared with the traditional pattern formed on the sensor plate of the touch device, the process of the sensor plate can be simplified when the pattern is changed to the film or light-transmitting plate of the touch device. In addition, the material of the sensor board may not be limited to transparent materials, thereby saving related costs.

Although the embodiments of the present invention and its advantages have been disclosed above, it should be understood that any person with ordinary knowledge in the relevant technical field can make changes, substitutions and modifications without departing from the spirit and scope of the present invention. In addition, the scope of protection of the present invention is not limited to the manufacturing processes, machines, manufacturing, material composition, devices, methods, and steps in the specific embodiments described in the specification. Anyone with ordinary knowledge in the technical field can disclose the content from the present invention. It is understood that the current or future developed processes, machines, manufacturing, material composition, devices, methods, and steps can be used according to the present invention as long as they can perform substantially the same functions or obtain substantially the same results in the embodiments described herein. Therefore, the protection scope of the present invention includes the above-mentioned manufacturing processes, machines, manufacturing, material composition, devices, methods and steps. In addition, the scope of each patent application constitutes an individual embodiment, and the protection scope of the present invention also includes the scope of each patent application and the combination of the embodiments.

1: Electric heating equipment 10, 10A, 10', 10": touch device 11, 11': substrate 111, 111A, 111B: first connector 12, 12': light-emitting element 13, 13', 13": shading member 131, 131': first opening 132, 132', 132A, 132B: hole 14, 14A, 14B, 14C, 14D, 14': sensor plate 14A': first sensor plate 14B': second sensor plate 141, 141 ': second opening 141B: openings 142, 142A, 142B, 142C, 142D, 142', 1422: sensing circuit 143: second connector 144A, 144B, 144C, 144D: contact 15: light-transmitting plate 16, 16 ': film 17, 17': pattern 20: body 30: heating device A-A': line L: light

FIG. 1 shows a three-dimensional schematic diagram of a touch device according to an embodiment of the invention. Fig. 2 shows an exploded schematic diagram of the touch device of Fig. 1. Fig. 3 shows a schematic cross-sectional view of the touch device in Fig. 1 along the line A-A'. FIG. 4 shows an exploded schematic diagram of a touch device according to another embodiment of the invention. Figures 5A to 5D show schematic top views of sensor panels according to some embodiments of the invention. Figure 6 shows a schematic top view of an electric heating device according to an embodiment of the invention. Fig. 7 shows an exploded schematic diagram of the touch device shown in Fig. 6. FIG. 8 shows an exploded schematic diagram of a touch device according to another embodiment of the invention.

10: Touch device

11: substrate

111: The first connector

12: Light-emitting element

13: Shading parts

131: The first opening

132: Hole

14: Induction board

141: second opening

142: Induction circuit

143: The second connecting piece

15: Translucent board

16: Film

17: Pattern

Claims (8)

A touch device includes: a substrate including a first connecting member; a light-emitting element disposed on the substrate; a shading member disposed on the substrate, wherein the shading member has a first opening, and the light-emitting element Is located in the first opening; a sensing plate is disposed on the shading member and electrically connected to the substrate, wherein the sensing plate has a second opening, and the first opening overlaps the second opening, wherein the The sensing board further includes a second connecting member electrically connected to the first connecting member; and a light-transmitting plate disposed on the sensing board and covering the first opening and the second opening, wherein the light-shielding member is more There is a hole, and the first connecting piece and the second connecting piece are electrically connected through the hole. In a top view, the hole is separated from the light-emitting element. The touch device described in item 1 of the scope of patent application further includes a thin film disposed between the sensor board and the light-transmitting board. In the touch device described in item 2 of the scope of patent application, a pattern is formed on the film, and the light emitted by the light-emitting element can penetrate the film and display the pattern. As for the touch device described in the first item of the scope of patent application, one of the patterns is formed on the light-transmitting plate, and the light emitted by the light-emitting element can penetrate the light-transmitting plate, And display the pattern. In the touch device described in claim 1, wherein the sensing board further includes a sensing circuit surrounding the second opening. For the touch device described in item 5 of the scope of patent application, the sensing circuit includes a plurality of contacts, and the contacts are arranged in parallel. The touch device described in claim 1, wherein the sensor board further includes a first sensor board and a second sensor board. The first sensor board is located inside the opening of the second sensor board and is in contact with The second induction plate is electrically isolated. An electric heating device includes: a body; a heating device arranged in the body; a touch device arranged in the body to control the operating state of the heating device, wherein the touch device includes: a substrate, including a first A connecting piece; a plurality of light emitting elements arranged on the substrate; a shading piece arranged on the substrate, wherein the shading piece has a plurality of first openings, and the light emitting elements are correspondingly located in the first openings; A sensor board is disposed on the shading member and electrically connected to the substrate, wherein the sensor board has a plurality of second openings, and the first openings overlap the second openings correspondingly, and the sensor board is more It includes a second connector electrically connected to the first connector; and a light-transmitting plate disposed on the sensor board and covering the first openings and the A second opening, wherein the shading member further has a hole, and the first connecting member and the second connecting member are electrically connected through the hole. In a top view, the hole is separated from the light-emitting element.

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