CN218850754U - Touch key board and touch equipment - Google Patents

Abstract

The application relates to a touch key board and a touch device. The touch key board comprises a circuit board and a touch sensing piece arranged on the circuit board; the touch sensing piece comprises a main touch sensing piece and at least one auxiliary touch sensing piece; the main touch sensing piece and the auxiliary touch sensing piece are arranged on the circuit board, and the auxiliary touch sensing piece is arranged around the main touch sensing piece and is arranged at an interval with the main touch sensing piece. This application forms the touch-control response piece through main touch-control response piece and assistance touch-control response piece, and at the in-process that uses, through main touch-control response piece and assistance touch-control response piece gather the signal of telecommunication that produces when touching the touch-control response piece because of touching physics simultaneously, through the condition of the signal of telecommunication of main touch-control response piece and assistance touch-control response piece, realize a plurality of touch-control functions of touch-control response piece set to the realization is prevented the maloperation.

Description

Touch key board and touch equipment

Technical Field

The present application relates to the field of touch technologies, and in particular, to a touch key pad and a touch device.

Background

In a projector with a glass cover or a plastic cover, a mechanical key board or a touch key board and other key structures are generally required to be arranged. The touch key is widely used on the existing high-end type machine, and can avoid the problem that the mechanical key is damaged due to multiple pressing, so that the service life is longer. However, the conventional touch key has a single touch function, and cannot effectively distinguish a hand from a mobile phone and touch of various objects.

SUMMERY OF THE UTILITY MODEL

Therefore, it is necessary to provide a touch key sheet and a touch device for solving the problems that the touch function is single and the hand cannot be effectively distinguished from the mobile phone and various objects.

In order to achieve the above object, in one aspect, an embodiment of the present application provides a touch key pad, including a circuit board and a touch sensing element disposed on the circuit board;

the touch sensing piece comprises a main touch sensing piece and at least one auxiliary touch sensing piece;

the main touch sensing piece and the auxiliary touch sensing piece are arranged on the circuit board, and the auxiliary touch sensing piece is arranged around the main touch sensing piece and is arranged at an interval with the main touch sensing piece.

In one embodiment, the primary touch sensor and the secondary touch sensor are both pads on the circuit board.

In one embodiment, the primary touch sensor is a circular pad; the auxiliary touch sensing piece is a rectangular bonding pad; the size of the auxiliary touch sensing piece is smaller than that of the main touch sensing piece.

In one embodiment, the radius of the pad of the primary touch sensor is within 7 mm to 15 mm; the length of the bonding pad of the auxiliary touch sensing piece is within 15 mm to 21 mm, and the width of the bonding pad of the auxiliary touch sensing piece is within 4 mm to 8 mm.

In one embodiment, the number of the auxiliary touch sensing pieces is 4; the main touch sensing piece is a circular bonding pad; the auxiliary touch sensing piece is a rectangular bonding pad or an arc bonding pad.

In one embodiment, the number of the auxiliary touch sensing pieces is at least two, and each auxiliary touch sensing piece is symmetrically arranged around the main touch sensing piece; the minimum distance from the edge of the auxiliary touch sensing piece to the edge of the main touch sensing piece is within 7 mm to 10 mm.

In one embodiment, the touch key board further comprises a lamp bead; the lamp bead is arranged on the circuit board and is arranged around the main touch sensing piece and/or the auxiliary touch sensing piece.

In one embodiment, the circuit board comprises separate sub-circuit boards; the main touch sensing piece and the auxiliary touch sensing piece are arranged on different sub circuit boards in a one-to-one correspondence mode.

On the other hand, an embodiment of the present application provides a touch device, which includes a panel and the touch key sheet of any of the above embodiments, and a circuit board is mounted on the panel.

In one embodiment, the touch device further comprises a light guide sheet, the touch keypad further comprises a plurality of lamp beads, and the plurality of lamp beads are arranged on the circuit board and surround the primary touch sensing piece and/or the secondary touch sensing piece;

the inner side of the panel is provided with a groove; the bottom wall of the groove is provided with a light-transmitting area; the light guide sheet is accommodated in the groove and located between the main touch sensing piece and the bottom wall of the groove, and the light emitting side of the lamp bead faces the adjacent light guide sheet.

One of the above technical solutions has the following advantages and beneficial effects:

the touch key board provided by each embodiment of the application comprises a circuit board and a touch sensing piece. The touch sensing element comprises a main touch sensing element and at least one auxiliary touch sensing element, wherein the main touch sensing element and the auxiliary touch sensing element are touch sensing elements of the same type. In an actual product, the main touch sensing element and the auxiliary touch sensing element are arranged on the circuit board, and the auxiliary touch sensing element is arranged around the main touch sensing element and spaced from the main touch sensing element. According to the touch control sensing piece, the main touch control sensing piece and the auxiliary touch control sensing piece form the touch control sensing piece, in the using process, the main touch control sensing piece and the auxiliary touch control sensing piece are used for simultaneously collecting electric signals generated when the main touch control sensing piece and the auxiliary touch control sensing piece are in physical contact with the touch control sensing piece, and a plurality of touch control functions integrated by one touch control sensing piece are achieved through the condition of the electric signals of the main touch control sensing piece and the auxiliary touch control sensing piece, and misoperation is prevented.

Drawings

Fig. 1 is a schematic structural diagram of a touch key pad according to an embodiment of the present disclosure.

Fig. 2 is another schematic structural diagram of a touch key pad according to an embodiment of the present disclosure.

Fig. 3 is a cross-sectional view of a touch key pad according to an embodiment of the present disclosure.

Fig. 4 is a schematic structural diagram of a circuit board of a touch key sheet according to an embodiment of the present disclosure.

Fig. 5 is a cross-sectional view of a circuit board of a touch key sheet according to an embodiment of the present disclosure.

Fig. 6 is a cross-sectional view of a touch device according to an embodiment of the present disclosure.

Fig. 7 is another cross-sectional view of a touch device according to an embodiment of the present disclosure.

Fig. 8 is a perspective view of a panel of a touch device according to an embodiment of the present disclosure.

Detailed Description

To facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present application are shown in the drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element and be integral therewith, or intervening elements may also be present. The terms "mounted," "one end," "the other end," and the like are used herein for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Electronic devices (e.g., smart televisions, computers, projectors, etc.) on the market today basically have keys for operating the electronic devices. The keys are mechanical keys and touch keys. In common touch keys, one touch key triggers one function; in addition, the common touch keys cannot identify the object to be touched, which is likely to cause false triggering.

In order to solve the above problem, as shown in fig. 1, the present application provides a touch key board 100, which includes a circuit board 11 and a touch sensing element 13 disposed on the circuit board 11. It should be noted that the circuit board 11 is used to provide both physical load bearing support and electrical circuit support. The circuit board 11 at least comprises a peripheral circuit for supporting the touch sensing element 13 to work, the peripheral circuit is connected with the touch sensing element 13, and signals generated when the touch sensing element 13 is touched are collected and transmitted by the peripheral circuit. In an example, the circuit board 11 further includes a power circuit and a controller, the controller is respectively connected to the power circuit and the touch sensor 13, and the power circuit is connected to the touch sensor 13.

The touch sensing part 13 is used for responding to a touch operation, and when a touch object approaches the touch sensing part 13, a voltage signal of the touch sensing part 13 is changed and then transmitted to the processor through a circuit on the circuit board 11 to realize analysis. In one example, a set of touch sensors 13 includes a primary touch sensor 131 and at least one secondary touch sensor 133. For example, the touch sensing device 13 includes a main touch sensing device 131 and one auxiliary touch sensing device 133, the touch sensing device 13 includes the main touch sensing device 131 and two auxiliary touch sensing devices 133, the touch sensing device 13 includes the main touch sensing device 131 and three auxiliary touch sensing devices 133, the touch sensing device 13 includes the main touch sensing device 131 and four auxiliary touch sensing devices 133, the touch sensing device 13 includes the main touch sensing device 131 and five auxiliary touch sensing devices 133, and the number of the auxiliary touch sensing devices 133 can be determined according to actual situations. It should be noted that the number of the main touch sensing elements 131 may be one or more, and may also be determined according to the actual situation. The primary touch sensor 131 and the secondary touch sensor 133 are the same type of touch sensor 13, for example, the primary touch sensor 131 and the secondary touch sensor 133 are both a capacitive sensor, an inductive sensor, a pressure sensor, or a pad on the circuit board 11.

The touch sensing element 13 is spaced from a touch object (e.g., a finger), and particularly, the spacing can be achieved through an outer shell of the electronic device, where when the primary touch sensing element 131 and the secondary touch sensing element 133 are any one of a capacitive sensor, an inductive sensor, and a pad, and the touch object approaches, electromagnetic induction is generated between the touch object and the primary touch sensing element 131 and the secondary touch sensing element 133, so as to change voltage signals on the primary touch sensing element 131 and the secondary touch sensing element 133, and thus the touch object can be discriminated by the processor to trigger a corresponding touch function based on a signal difference or identify whether the touch object is an erroneous operation. For the case that the main touch sensing element 131 and the auxiliary touch sensing element 133 are pressure sensors, the touch object is required to press the casing of the electronic device to deform the casing, so as to drive the main touch sensing element 131 and the auxiliary touch sensing element 133 to deform to trigger corresponding voltage signals.

For the key to realize the function of preventing the erroneous touch, when the external operation makes the signal generated by the main touch sensing element 131 greater than a preset value, the external operation is used as a potential user touch operation; meanwhile, when the difference between every two voltage signals generated by each auxiliary touch sensing element 133 is smaller than a preset value, it is determined that the external operation covers each auxiliary touch sensing element 133, so that the external operation is determined as a false operation, otherwise, the external operation is determined as a normal operation and a touch function corresponding to the touch key is triggered. For the touch key set with multiple touch functions, since the position of the auxiliary touch sensing element 133 relative to the main touch sensing element 131 is known, the direction of the touch operation of the user can be identified based on the signal triggering sequence of the auxiliary touch sensing element 133 and the main touch sensing element 131 and/or other auxiliary touch sensing elements 133, and further, the corresponding function is triggered based on the direction, and different directions can correspond to different touch functions, such as volume increase/decrease, brightness increase/decrease, and the like.

The main touch sensing element 131 and the auxiliary touch sensing element 133 are disposed on the circuit board 11, and each auxiliary touch sensing element 133 in the same set of touch sensing elements 13 on the touch key board 100 is disposed around the main touch sensing element 131 and spaced apart from the main touch sensing element 131, and each auxiliary touch sensing element 131 is disposed at the same spacing. The touch key sheet 100 may include one or more sets of touch sensors 13. It should be noted that the auxiliary touch sensing element 133 is enclosed around the main touch sensing element 131 means that the auxiliary touch sensing element 133 and the main touch sensing element 131 are separated by a certain range, and when the number of the auxiliary touch sensing elements 133 is two or more, the auxiliary touch sensing element 133 is arranged around the main touch sensing element 131, so that one-key multi-function and anti-misoperation are realized through the difference between signals generated by the main touch sensing element 131 and the auxiliary touch sensing element 133 when a touch object (e.g., a finger) approaches the touch sensing element 13.

Taking the primary touch sensing element 131 and the secondary touch sensing element 133 as pads on the circuit board 11 as an example, the shapes of the pads can be selected according to actual situations. In one example, the primary touch sensor 131 is a circular pad and the secondary touch sensor 133 is a rectangular pad. In this example, the size of the auxiliary touch sensing element 133 is smaller than that of the main touch sensing element 131, and it should be noted that the size may refer to an area, or to a length and a width. By combining the small-sized auxiliary touch sensor 133 and the large-sized main touch sensor 131, the area occupied by the touch sensor 13 on the circuit board 11 can be reduced, thereby facilitating the miniaturization of the touch key sheet 100. In one example, the pad radius of the primary touch sensor 131 is within 7 mm to 15 mm. For example, the pad radius of the primary touch sensor 131 is 8 mm, the pad radius of the primary touch sensor 131 is 10 mm, and the pad radius of the primary touch sensor 131 is 12 mm. The pad length of the auxiliary touch sensing member 133 is within 15 mm to 21 mm, and the pad width of the auxiliary touch sensing member 133 is within 4 mm to 8 mm. For example, the pad length of the auxiliary touch sensing member 133 is 17 mm and 19 mm. The pad width of the auxiliary touch sensing member 133 is 5 mm, 6 mm, 7 mm. The specific size can be determined according to actual requirements.

Take the number of the auxiliary touch sensing members 133 as 4 as an example. In this example, the primary touch sensor 131 may be a circular pad. The auxiliary touch sensing member 133 is a rectangular pad or an arc pad. In order to further reduce the size of the touch sensing element 13, improve the performance of the touch sensing element 13, and simplify the control logic, in one example, each of the auxiliary touch sensing elements 133 is symmetrically disposed around the main touch sensing element 131, and the included angle between the center of any two adjacent auxiliary touch sensing elements 133 and the center of the main touch sensing element 131 is the same. For example, the centers of 4 auxiliary touch sensing elements 133 are respectively disposed at four vertices of a rectangular area surrounding the main touch sensing element 131, and an included angle formed between the center of any two adjacent auxiliary touch sensing elements 133 and the center of the main touch sensing element 131 is 90 °; when the number of the auxiliary touch sensing members 133 is three, the included angle is 120 °; when the number of the auxiliary touch sensing members 133 is two, the included angle is 180 °, and so on. In one example, the minimum distance from the edge of the secondary touch sense element 133 to the edge of the primary touch sense element 131 is within 7 mm to 10 mm. The minimum distance from the edge of the auxiliary touch sensing member 133 to the edge of the main touch sensing member 131 is 8 mm or 9 mm.

In order to prompt the user of the position of the touch sensor 13, in one example, as shown in fig. 2 and 3, the touch button panel 100 further includes a plurality of light beads 15, where the number of the light beads 15 is multiple. A plurality of lamp pearls 15 set up on circuit board 11, set up around main touch-control sensing piece 131, perhaps set up around assisting touch-control sensing piece 133, perhaps set up around main touch-control sensing piece 131 and assisting touch-control sensing piece 133 respectively, and the luminous side of lamp pearl 15 is towards main touch-control sensing piece 131 or assisting touch-control sensing piece 133 that surround. It should be noted that, the arrangement of the lamp bead 15 around the main touch sensor 131 means that the lamp bead 15 is arranged near the main touch sensor 131. The lamp bead 15 is arranged around the auxiliary touch sensing piece 133, which means that the lamp bead 15 is arranged near the auxiliary touch sensing piece 133. The number of the specific lamp beads 15 can be set according to actual requirements. In one example, the lamp beads 15 are LED (Light Emitting Diode) lamp beads. In one example, a plurality of different colored beads 15 may be provided. Under different operations, light of corresponding colors is emitted.

In one example, the circuit board 11 may be a unitary piece. In another example, as shown in fig. 4 and 5, the circuit board 11 includes separate sub-circuit boards 11. The main touch sensing element 131 and the auxiliary touch sensing elements 133 are correspondingly disposed on different sub-circuit boards 11 one by one, that is, the main touch sensing element 131 corresponds to one sub-circuit board 11, the auxiliary touch sensing element 133 corresponds to one sub-circuit board 11, and the main touch sensing element 131 and the auxiliary touch sensing element 133 which are separately disposed can make the auxiliary touch sensing elements 133 farther away from the main touch sensing element 131, so as to improve the sensing difference of the auxiliary touch sensing elements 133 during touch sensing, thereby being beneficial to improving the signal comparison accuracy of the processing end to the auxiliary touch sensing elements 133.

In the embodiment of the touch key sheet 100 of the present application, the touch key sheet 100 includes a circuit board 11 and at least one set of touch sensors 13. Each group of touch sensing elements 13 includes a primary touch sensing element 131 and at least one secondary touch sensing element 133, wherein the primary touch sensing element 131 and the secondary touch sensing element 133 are touch sensing elements 13 of the same type. In an actual product, the primary touch sensing element 131 and the secondary touch sensing element 133 are disposed on the circuit board 11, and the secondary touch sensing element 133 is disposed around the primary touch sensing element 131 and spaced apart from the primary touch sensing element 131. This application forms touch-control response piece 13 through main touch-control response piece 131 and assistance touch-control response piece 13, and at the in-process of using, gathers the signal of telecommunication that produces when touching physical contact to touch-control response piece 13 simultaneously through main touch-control response piece 131 and assistance touch-control response piece 13, through the condition of the signal of telecommunication of main touch-control response piece 131 and assistance touch-control response piece 13, realizes a plurality of touch-control functions of touch-control response piece 13 set to the realization is prevented the maloperation.

In order to apply the touch key sheet 100 of the present application to a device, an embodiment of the present application further provides a touch device, where the touch device includes a panel 17 and the touch key sheet 100, and the circuit board 11 is installed on the panel 17, specifically on the other side of the panel 17 opposite to the side where the user touches. It should be noted that the device may be a projector, a set-top box, a television, a computer, a household appliance, a kitchen appliance, or the like, and the touch key pad 100 of the present application may be applied as long as the device is used for a touch key.

In one example, as shown in fig. 6 and 7, the touch key sheet 100 further includes a light guide sheet 19. The light guide sheet 19 is used for guiding light, and guiding light inside the touch device to pass through the panel 17 to identify the position of the touch sensor 13. Especially, in the example where the touch key sheet 100 is provided with the lamp beads 15, the light guide sheet 19 may guide light emitted by the lamp beads 15 out of the touch device. In one example, the light guide plates 19 are in one-to-one correspondence with the primary touch sensors 131 and the secondary touch sensors 133, that is, the number of the light guide plates 19 is the same as the sum of the primary touch sensors 131 and the secondary touch sensors 133, and the light guide plates 19 are in one-to-one correspondence in position, so that the light guide plates 19 are covered or partially covered by the corresponding primary touch sensors 131 and the corresponding secondary touch sensors 133, and the light guide plates 19 are abutted against the corresponding primary touch sensors 131 and the corresponding secondary touch sensors 13. The light emitting side of the bead 15 faces the adjacent light guide sheet 19.

In a further example, as shown in fig. 8, the inner side of the panel 17 is provided with a plurality of grooves 171. Each of the grooves 171 corresponds to the primary touch sensing members 131 and the secondary touch sensing members 133 one-to-one, and the bottom wall of the groove 171 has a light-transmitting area, for example, the entire panel 17 is made of transparent plastic, wherein the entire panel 17 is coated with a light-shielding material, and the bottom wall of the groove 171 and the other side area of the corresponding panel 17 are not coated, so that the bottom wall of the groove 171 can be used for transmitting light. The cross-sectional shape of groove 171 may be the same as or different from the shape of light guide plate 19. The light guide plate 19 is received in the recess 171. The touch key sheet 100 is mounted on the panel 17, so that the primary touch sensing member 131 and the secondary touch sensing member 133 cover the light guide sheet 19 in the corresponding groove 171, and the light guide sheet 19 is located between the bottom walls of the corresponding primary touch sensing member 131 and the corresponding groove 171. The top of light guide sheet 19 is higher than groove 171 to make the light emitting side of lamp pearl 15 can be towards the portion that light guide sheet 19 exceeds groove 171, thereby make the light of lamp pearl 15 can be squeezed into light guide sheet 19. In addition, for the example that the touch sensor 13 is a pad, a tin layer may be disposed on the surface of the pad, so as to facilitate the light incident on the light guide sheet 19 to be reflected toward the bottom wall of the groove 171, and increase the light emitting brightness. It should be noted that the light guide plate 19 is sized to at least completely cover the primary touch sensor 131 and the secondary touch sensor 133.

To facilitate mounting and positioning, in one example, a positioning post 173 is provided on the panel 17. The circuit board 11 of the touch key board 100 is provided with positioning holes for positioning the positioning posts 173 one by one. When the panel 17 is covered on the touch key board 100, the positioning column 173 is disposed in the positioning hole.

This application equipment is owing to install touch-control keypad 100 of this application for can utilize a touch-control response piece 13 to realize multiple operation, thereby practice thrift the space of equipment greatly, this application touch-control keypad 100 equipartition prevents the effect of maloperation in addition, makes the security performance of this application equipment better.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (10)

1. A touch key board is characterized by comprising a circuit board and a touch sensing piece arranged on the circuit board;

the touch sensing piece comprises a main touch sensing piece and at least one auxiliary touch sensing piece;

the main touch sensing piece and the auxiliary touch sensing piece are arranged on the circuit board, and the auxiliary touch sensing piece is arranged around the main touch sensing piece and is arranged at an interval with the main touch sensing piece.

2. The touch key pad of claim 1, wherein the primary touch sensor and the secondary touch sensor are both pads on the circuit board.

3. The touch key sheet of claim 2, wherein the primary touch sensor is a circular pad; the auxiliary touch sensing piece is a rectangular bonding pad; the size of the auxiliary touch sensing piece is smaller than that of the main touch sensing piece.

4. The touch key pad of claim 3, wherein the radius of the pad of the primary touch sensor is within 7 mm to 15 mm; the length of the bonding pad of the auxiliary touch sensing piece is within 15 mm to 21 mm, and the width of the bonding pad of the auxiliary touch sensing piece is within 4 mm to 8 mm.

5. The touch key pad of claim 1, wherein the number of the auxiliary touch sensing members is 4; the main touch control induction piece is a circular bonding pad; the auxiliary touch sensing piece is a rectangular bonding pad or an arc bonding pad.

6. The touch key pad of claim 1, wherein the number of the secondary touch sensing members is at least two, and each secondary touch sensing member is symmetrically disposed around the primary touch sensing member; the minimum distance from the edge of the auxiliary touch sensing piece to the edge of the main touch sensing piece is within 7 mm to 10 mm.

7. The touch key sheet according to any one of claims 1 to 6, wherein the circuit board includes separate circuit boards independent from each other; the main touch sensing piece and the auxiliary touch sensing pieces are correspondingly arranged on different sub circuit boards one by one.

8. The touch key sheet according to any one of claims 1 to 6, wherein the touch key sheet further comprises a lamp bead; the lamp beads are arranged on the circuit board and surround the main touch sensing piece and/or the auxiliary touch sensing piece.

9. A touch device comprising a panel and the touch key sheet of any one of claims 1 to 7, wherein the circuit board is mounted on the panel.

10. The touch device of claim 9, further comprising a light guide sheet, wherein the touch keypad further comprises a plurality of light beads, and the plurality of light beads are disposed on the circuit board and surround the primary touch sensing element and/or the secondary touch sensing element;

a groove is formed in the inner side of the panel; the bottom wall of the groove is provided with a light transmission area; the light guide sheet is accommodated in the groove and is positioned between the main touch sensing piece and the bottom wall of the groove, and the light emitting side of the lamp bead faces the adjacent light guide sheet.

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