JP2023164251A - Display device and input device - Google Patents

Abstract

To provide a display device or the like, with reduced discomfort of tactile sensation.SOLUTION: A display device includes: a skin 11 having light transparency; a design sheet 12 having light transparency and arranged on a surface side or a back side of the skin 11; a cushion layer 13 having light transparency and arranged on the back side of the skin 11; and a light source 33 arranged on a back side of the cushion layer 13. The cushion layer 13 includes: a plurality of first recesses 13a which are convex in a first direction in a lamination direction with respect to a reference line that intersects with the lamination direction, in cross sectional view of the skin 11 and the design sheet 12 cut in a plane parallel to the lamination direction, the recess being concave on the back of the convex shape; and a plurality of second recesses 13b connected to the first recesses 13a, being convex in a second direction opposite the first direction in the lamination direction with respect to the reference line, and being concave on the back of the convex shape. The first recesses 13a and the second recesses 13b are alternately arranged along the first direction.SELECTED DRAWING: Figure 5

Description

The present disclosure relates to a display device and an input device.

2. Description of the Related Art Conventionally, vehicles such as automobiles are equipped with a display device that displays a desired display, an input device that receives input from a user such as a driver, and the like. For example, Patent Document 1 discloses a switch device (input device) that allows a user to feel a soft operating sensation when operating the switch device.

JP2020-24832A

By the way, there are cases where it is desired that the display device and the input device do not give the user a sense of discomfort when the user touches them.

Therefore, the present disclosure provides a display device and an input device in which the sense of discomfort to the touch is reduced.

A display device according to one aspect of the present disclosure includes a light-transmitting skin, a design portion having light-transmitting properties and arranged on the front side or the back side of the skin, and a cushion layer disposed on the back surface side of the skin; and a light source disposed on the back surface side of the cushion layer, the cushion layer being cut along a plane parallel to the lamination direction of the skin and the design part. In cross-sectional view, the plurality of recesses are convex in the lamination direction and the back side of the convexity is concave, and the plurality of recesses are parallel to a first direction intersecting the lamination direction. a first recess that is convex in a first direction in the lamination direction with respect to the line and has a concave back side of the convex shape in the first direction; a second recess that is convex in a second direction opposite to the first direction in the stacking direction, and a back side of the convex shape in the second direction is concave, the first recess and the second recess. are arranged alternately along the first direction.

An input device according to one aspect of the present disclosure includes the above-described display device and a detection unit that is arranged on the back side of the cushion layer and detects an operation from a user.

According to one aspect of the present disclosure, it is possible to realize a display device or the like in which discomfort with tactile sensation is reduced.

FIG. 1 is a perspective view showing an example of the appearance of an input device according to an embodiment. FIG. 2 is an exploded perspective view showing the input device according to the embodiment. FIG. 3 is an exploded perspective view showing the skin part according to the embodiment. FIG. 4 is an exploded perspective view showing the frame portion according to the embodiment. FIG. 5 is a sectional view showing the input device according to the embodiment. FIG. 6 is a cross-sectional perspective view showing the cushion layer according to the embodiment. FIG. 7 is a perspective view showing the cushion layer according to the embodiment. FIG. 8 is a block diagram showing the functional configuration of the input device according to the embodiment. FIG. 9 is a perspective view showing a cushion layer according to Modification 1 of the embodiment. FIG. 10A is a cross-sectional view showing the cushion layer according to Modification 1 of the embodiment, taken along the Xa-Xa cutting line shown in FIG. 9. FIG. FIG. 10B is a cross-sectional view of the cushion layer according to Modification 1 of the embodiment, taken along the Xb-Xb cutting line shown in FIG. 9. FIG. FIG. 11 is a perspective view showing a cushion layer according to modification 2 of the embodiment. FIG. 12 is a cross-sectional perspective view showing a cushion layer according to modification 3 of the embodiment. FIG. 13 is a plan view showing the configuration of a cushion layer according to modification 4 of the embodiment. FIG. 14 is a cross-sectional view showing a light-shielding sheet arranged in a space of a cushion layer according to a fifth modification of the embodiment. FIG. 15 is a sectional view showing a cushion layer according to modification 6 of the embodiment. FIG. 16 is a sectional view showing an input device according to a seventh modification of the embodiment.

A display device according to one aspect of the present disclosure includes a light-transmitting skin, a design portion having light-transmitting properties and arranged on the front side or the back side of the skin, and a cushion layer disposed on the back surface side of the skin; and a light source disposed on the back surface side of the cushion layer, the cushion layer being cut along a plane parallel to the lamination direction of the skin and the design part. In cross-sectional view, the plurality of recesses are convex in the lamination direction and the back side of the convexity is concave, and the plurality of recesses are parallel to a first direction intersecting the lamination direction. a first recess that is convex in a first direction in the lamination direction with respect to the line and has a concave back side of the convex shape in the first direction; a second recess that is convex in a second direction opposite to the first direction in the stacking direction, and a back side of the convex shape in the second direction is concave, the first recess and the second recess. are arranged alternately along the first direction.

Accordingly, since the cushion layer has an uneven shape in the stacking direction, the cushion layer is easily compressed and deformed when the outer skin is pressed, and a soft tactile sensation can be provided to the user. Further, by forming a plurality of first recesses and second recesses, the tactile sensation of the portions where the first recesses and second recesses are formed can be made similar. In other words, it is possible to realize a display device in which the sense of discomfort to the touch is reduced.

Further, for example, the first recesses and the second recesses arranged alternately may be formed in a wavy shape in a cross-sectional view when cut along a plane parallel to the stacking direction.

Accordingly, since the wavy cushion layer is used, it is possible to suppress the occurrence of brightness unevenness (design unevenness) in light transmitted through the cushion layer due to the shape of the cushion layer. Therefore, it is possible to realize a display device or the like in which the occurrence of uneven brightness is suppressed and the sense of discomfort to the touch is reduced.

Further, for example, the cushion layer may include a plurality of the first recesses and the second recesses arranged along the first direction in a second direction intersecting the first direction in a plan view of the display device. It may have an elongated first wavy member.

Thereby, it is possible to realize a display device or the like in which a tactile sensation is reduced by using a wavy plate-like member as a cushion layer.

For example, the cushion layer is further formed such that the first recesses and the second recesses are arranged alternately along the second direction, and the cushion layer is further formed such that the first recesses and the second recesses are arranged alternately along the second direction. A second wavy shape in which the plurality of first recesses and the second recesses extend in a third direction intersecting the second direction in a plan view of the display device and are arranged to overlap with the first wavy member. It may also include a member.

This makes it possible to realize a display device in which the sense of discomfort to the touch is reduced.

Further, for example, the first direction and the second direction are orthogonal to each other in a plan view of the display device, and the second direction and the third direction are orthogonal to each other in a plan view of the display device, The first direction and the third direction may be the same direction.

This makes it possible to realize a display device in which the sense of discomfort to the touch is reduced.

Further, for example, if the pitch between the adjacent first recesses or the adjacent second recesses in the first wavy member is p1, the tops of the first recesses and the tops of the second recesses in the first wavy member and the length in the stacking direction is less than p1, and if the pitch of the adjacent first recesses or the adjacent second recesses in the second wavy member is p2, then the length of the second recess in the second wavy member is less than p1. The length of the top of the first recess and the top of the second recess in the stacking direction may be less than p2.

As a result, the height of one wavy member is small, making it easy to mold. In other words, productivity improves.

Further, for example, the cushion layer may have a plurality of first recesses and a plurality of second recesses, each of which is two-dimensionally arranged in a plan view of the display device.

This makes it possible to further reduce the discomfort caused by the tactile sensation.

Further, for example, in the cushion layer, in a cross-sectional view when cut along a plane parallel to the lamination direction, the first recesses and the second recesses are arranged alternately along the first direction. , further comprising the first recesses and the second recesses arranged alternately along a second direction intersecting the first direction in a plan view of the display device, the display device further comprising the first recesses and the second recesses arranged along the second direction. The first recess and the second recess are located at different positions of the reference line in the stacking direction from the first recess and the second recess along the first direction, and are arranged along the first direction. The first recessed portion arranged along the second direction may be connected to the second recessed portion arranged along the second direction.

This makes it possible to further reduce the discomfort caused by the tactile sensation.

Further, for example, the second direction may be a direction from the cushion layer toward the outer skin side, and the top of the second recess may be a flat surface.

This makes it possible to reduce the difference in tactile sensation between the second recessed portion and the portion between the adjacent second recessed portions, thereby further reducing the discomfort caused by the tactile sensation.

Further, for example, the cushion layer has a first portion that overlaps with a design formed in the design portion and a second portion around the first portion, in a plan view of the display device, and The light transmittance may be higher than that of the second portion.

As a result, the design is displayed brightly, so that the appearance of the design can be improved.

Further, for example, the first portion may be transparent or colored to transmit light, and the second portion may have a light blocking property.

Thereby, the design can be displayed in a desired color.

Further, for example, a light-shielding sheet may be placed between the adjacent first recesses.

Thereby, it is possible to suppress the light that has entered one of the adjacent first recesses from leaking out from the other recess, so that the appearance of the design can be improved.

Further, for example, the design portion may be arranged so as to overlap two or more of the first recesses and the second recesses when viewed from the stacking direction.

Thereby, the same tactile sensation can be given to the user no matter which part of the first recess or the second recess is pressed. Therefore, it is possible to realize a display device in which the sense of discomfort to the touch is further reduced.

Further, for example, the cushion layer may be formed of silicone rubber having optical transparency.

Thereby, the cushion layer can be easily produced by molding the silicone rubber.

Further, for example, the cushion layer may include light diffusing particles having a different refractive index from the silicone rubber. Further, for example, the design portion may include a silicone rubber having optical transparency and light diffusing particles having a different refractive index from the silicone rubber.

This makes it possible to suppress unevenness in brightness caused by the cushion layer, thereby further improving the appearance of the design.

Further, for example, the design portion may include a printed layer forming a design.

Thereby, the design portion can be produced by a simple method such as printing.

Further, for example, the design portion may include a design sheet forming a design.

As a result, when changing the design depending on the car model, etc., it is possible to do so by simply replacing the design sheet without changing the outer skin. In addition, the presence of a designed sheet can provide cushioning properties. Therefore, it is possible to realize a display device in which the sense of discomfort to the touch is further reduced, and in which a design corresponding to the type of vehicle can be easily realized.

Further, for example, the first recessed portion or the second recessed portion may be square, hexagonal, or circular in plan view of the display device.

As a result, the first recess or the second recess having a simple shape such as a square, hexagon, or circle can provide a soft tactile sensation to the user.

Further, an input device according to one aspect of the present disclosure includes the above-described display device and a detection unit that is arranged on the back side of the cushion layer and detects an operation from a user.

This produces the same effects as the display device described above.

Further, for example, the cushion layer may be compressively deformed by pressing against the epidermis.

As a result, the cushion layer is compressed and deformed by pressure, so it is possible to realize an input device that can provide a user with a soft tactile sensation during operation.

Further, for example, the detection unit may detect an operation from the user when the cushion layer is compressed and deformed and the epidermis is further pressed.

Thereby, when the cushion layer is compressed and deformed, the user's operation can be detected, so that a soft tactile sensation can be provided before the user's operation is detected. Furthermore, when the input device includes a vibration device that stimulates the user's sense of tactile force during an operation on the user's epidermis, it is possible to suppress vibrations caused by the vibration device from being absorbed by the cushion layer.

Further, for example, the detection unit includes a light-transmissive sensor film for detecting an operating position on a surface of the cushion layer opposite to the surface on which the skin is arranged, and the input device further includes: a plate-shaped frame disposed between the sensor film and the light source and having a through hole at a position corresponding to a design formed in the design portion; It may also include a transparent protective layer.

As a result, stress concentration during a pressing operation on the detection section is alleviated by the protective layer, so it is possible to realize a highly reliable input device.

Further, for example, the protective layer may include light-diffusing particles.

As a result, the light that has been diffused in advance reaches the cushion layer, so that uneven brightness caused by the cushion layer can be suppressed, and the appearance of the design can be further improved.

Further, for example, the apparatus may further include a vibration device that transmits vibration to the cushion layer, and the vibration device may vibrate at least in a surface direction of the cushion layer.

As a result, even if the vibration generated by the vibration device is absorbed in the thickness direction of the cushion layer due to compressive deformation of the cushion layer due to the pressing operation, the vibration in the plane (horizontal) direction of the cushion layer is transmitted. Absorbed vibrations can be suppressed. In other words, it becomes possible to more reliably transmit vibrations to the user's fingers.

Note that the embodiments described below are all inclusive or specific examples. The numerical values, shapes, materials, components, arrangement positions and connection forms of the components shown in the following embodiments are merely examples, and do not limit the present disclosure. Further, among the constituent elements in the following embodiments, constituent elements that are not described in the independent claims will be described as arbitrary constituent elements. Furthermore, each figure is a schematic diagram and is not necessarily strictly illustrated. Moreover, in each figure, the same reference numerals are attached to the same constituent members.

In addition, in this specification, terms indicating relationships between elements such as the same and parallel, terms indicating the shape of elements such as rectangular and circular, and numerical values are not expressions that express only strict meanings. It is an expression that means that there is no difference, but it also includes a substantially equivalent range, for example, a difference of about several percent (for example, about 10%).

Further, coordinate axes may be shown in the drawings used for explanation in the following embodiments. The Z axis indicates the stacking direction in which each component of the input device is stacked. Further, the X-axis direction and the Y-axis direction are directions that are orthogonal to each other on a plane perpendicular to the Z-axis direction. In addition, in the following embodiments, "plan view" means viewing from the Z-axis direction, and "cross-sectional view" means a cut surface cut along a plane parallel to the stacking direction (Z-axis direction). means to see.

In addition, in this specification, ordinal numbers such as "first" and "second" do not mean the number or order of components, unless otherwise specified, and should be used to avoid confusion between similar components and to distinguish between them. It is used for the purpose of

(Embodiment)
[1. Overall configuration of input device]
First, the overall configuration of the input device 1 according to the present embodiment will be described with reference to FIGS. 1 and 2. FIG. 1 is a perspective view showing an example of the appearance of an input device 1 according to the present embodiment. FIG. 2 is an exploded perspective view showing the input device 1 according to the present embodiment.

As shown in FIG. 1, the input device 1 is a device that receives an input of an operation for controlling a device included in an object (for example, a vehicle such as a car) on which the input device 1 is mounted. Specifically, the input device 1 accepts a pressing operation (hereinafter also simply referred to as an operation) on the surface of the skin portion 10 from the user.

When the object is a vehicle, the equipment is in-vehicle equipment, such as a car navigation system, audio equipment for playing optical discs, video playback equipment, air conditioning equipment, etc., but is not limited thereto.

Note that the object on which the input device 1 is mounted is not limited to a vehicle. The input device 1 only needs to be mounted on an object that accepts operations from a user, and may be mounted on, for example, a home appliance.

As shown in FIGS. 1 and 2, the input device 1 includes a skin part 10, a main body part 20, a frame part 30, a vibration device 40, a leaf spring 50, a chassis 60, a main board 70, and an upper part. It includes a cover 80 and a lower cover 90.

The skin section 10 is a user interface on which a predetermined design is displayed and receives operations from the user. A user can control devices included in the vehicle by operating the skin portion 10. The skin portion 10 is, for example, a plate-shaped member, and is pressed by a user's operation.

The predetermined design is, for example, a design for controlling various devices included in a vehicle in which the input device 1 is mounted. Although FIG. 1 shows an example in which there are a plurality of designs displayed on the skin portion 10, the number of designs displayed may be one. Further, the skin portion 10 has a first region 10a where a design is displayed and a second region 10b where a design is not displayed.

The first area 10a is a switch section that functions as a switch in the input device 1. In other words, the switch portion of the input device 1 is the portion on which the design is displayed. The user controls the device he/she wants to control by operating the first area 10a corresponding to the device. In addition, in FIG. 1, one first region 10a is shown by a broken line frame as an example, but the shape of the first region 10a is not limited to this.

The second region 10b is a non-switch portion of the input device 1 that does not function as a switch. Even if the user operates the second area 10b, the device is not controlled. The second region 10b is a region around the first region 10a (region around the design) or a region between adjacent first regions 10a (region sandwiched between the designs). It can also be said that the second area 10b is an area in which the user does not operate for the purpose of controlling the device.

The input device 1 may be placed in a place where the user can easily touch the input device 1 unintentionally, such as on an armrest or a console. In other words, the epidermis 10 can be touched by the user other than when the user operates the device. For example, the epidermis 10 can be touched by the user even when the user places his or her hand on an armrest or the like.

When the user touches the skin part 10 for purposes other than controlling the device, not only the first area 10a but also the second area 10b can be touched by the user. For example, the second area 10b may be touched by the user at the same time as the first area 10a. At this time, if the tactile sensation (touch) is different between the first region 10a and the second region 10b, the user may feel uncomfortable with the tactile sensation. Therefore, the skin portion 10 according to the present embodiment is configured so that the same tactile sensation can be obtained in the first region 10a and the second region 10b. Note that the configuration of the skin portion 10 will be described later.

The skin portion 10 is fixed to the main body portion 20 using a fastening member such as a screw 15, for example.

The main body part 20 is a frame-shaped member that holds the skin part 10 and accommodates the frame part 30, the vibration device 40, the leaf spring 50, the chassis 60, and the main board 70. In the present embodiment, the main body 20 is arranged in the direction in which the skin 10 (for example, the skin 11) and the frame 30 (for example, the frame 32 shown in FIG. 4) are laminated when the skin 10 is operated. The frame portion 30 (for example, the frame 32) is held so as to be movable (movable) in the Z-axis direction. The main body portion 20 includes a frame portion 21 and a pair of restriction portions 22 .

The frame portion 21 is a frame-shaped member, and has a size and thickness (length in the Z-axis direction) that can accommodate the frame portion 30, the vibration device 40, the leaf spring 50, the chassis 60, and the main board 70. ).

The pair of regulating portions 22 are provided at each end of one side (in the present embodiment, the Z-axis positive side) of the opening of the frame portion 21 . An opening 23 is formed in a region sandwiched between the pair of regulating portions 22 . The opening 23 is an area surrounded by the frame portion 21 and the pair of restriction portions 22 in plan view. Further, the opening 23 may have the same size as the skin 11 of the skin portion 10, for example, in a plan view. The opening 23 is an opening in which the skin portion 10 is placed.

The main body portion 20 holds the skin portion 10 by sandwiching both ends of the skin portion 10 in the X-axis direction between the pair of regulating portions 22 and the pair of upper covers 80 . The opening 23 is closed, for example, by the skin portion 10.

The main body portion 20 is formed of resin, metal, etc., but is not limited thereto. Moreover, although the frame portion 21 and the pair of restriction portions 22 are integrally formed, for example, the present invention is not limited thereto.

The frame portion 30 is held by the main body portion 20 so as to be movable in the direction in which the skin portion 10 and the frame portion 30 are stacked (Z-axis direction) when the skin portion 10 is operated by the user, and is moved toward the skin portion 10 of the user. It moves in the Z-axis direction with the operation. The frame portion 30 is held by the main body portion 20 so as to move in the negative Z-axis direction regardless of whether either the first region 10a or the second region 10b is operated. For example, by pushing in a leaf spring 50 that supports the frame part 30, the frame part 30 can be moved relative to the vibration device 40, the chassis 60, and a push-in detection part (see push-in detection part 100 shown in FIG. 5), which will be described later. to move in the negative Z-axis direction. The frame portion 30 has a plate shape, for example, and is held by the main body portion 20 in a state parallel to the skin portion 10.

The frame portion 30 is disposed between the skin portion 10 and the leaf spring 50, and is pushed toward the Z-axis positive side by the leaf spring 50. In addition, the movement of the frame portion 30 in the Z-axis plus direction is restricted by both ends of the frame portion 30 in the X-axis direction coming into contact with the pair of restriction portions 22 of the main body portion 20. In the frame portion 30, the initial position of the frame portion 30 in the Z-axis direction is determined by the pair of restriction portions 22 and the leaf spring 50. The initial position indicates the position in the Z-axis direction when the skin portion 10 is not operated by the user. Note that the configuration of the frame section 30 will be described later.

The vibration device 40 is an example of a tactile sensation presentation unit that stimulates the user's tactile sensation during an operation on the epidermis 10 of the user. The vibration device 40 provides, for example, a tactile sensation to a user who operates the epidermis 10 through vibration. The vibration device 40 is mechanically connected to the frame portion 30 (for example, the frame 32), and provides a tactile sensation through vibration to a user who operates the skin portion 10 via the frame portion 30 and the skin portion 10. Mechanically connected here means that the vibration of the vibration device 40 is transmitted to the frame part 30, and the frame part 30 can vibrate in accordance with the vibration of the vibration device 40. In this embodiment, the vibration device 40 is directly fixed to the frame portion 30.

The vibration device 40 is configured to include a vibrator that generates vibrations. The vibrator may be, for example, a piezoelectric element made of a piezoelectric material, or may be a structure that operates electromagnetically, such as a motor, a solenoid, or a voice coil. Further, the vibrator may be a linear resonant actuator, an artificial muscle, a shape memory actuator, or the like.

The vibration device 40 is located at a position overlapping the frame portion 30 in a plan view, and is arranged on the side opposite to the skin portion 10 with respect to the frame portion 30 (Z-axis minus side of the frame portion 30). The vibration device 40 is arranged, for example, between the frame section 30 and the chassis 60. The vibration device 40 is disposed, for example, near the center of the frame portion 30 in plan view.

Note that the tactile sensation given to the user is not limited to vibration, but may be other tactile sensations such as a sense of force or friction, or may be tactile sensations given to sensory nerves such as electric current stimulation. . The element that provides a tactile sensation to the sensory nerves may be an element that generates an electrostatic friction sensation. Further, the tactile sensation given to the user may be, for example, a tactile sensation given in a non-contact manner. The element that provides a tactile sensation in a non-contact manner may be an element that generates ultrasonic waves or an air flow.

The leaf spring 50 is arranged on the opposite side of the frame part 30 from the skin part 10 (Z-axis negative side), contacts the frame part 30, and pushes up the frame part 30 toward the skin part 10 side (Z-axis positive side). It is an elastic body for Further, the leaf spring 50 is bent when the skin portion 10 is operated, and allows the frame portion 30 to move in the negative direction of the Z-axis. The leaf spring 50 has, for example, an elastic force that does not block the vibration of the frame portion 30 caused by the vibration device 40, but the elastic force is not limited to this.

The leaf spring 50 is, for example, a frame-shaped member, and may be in contact with the peripheral edge of the frame portion 30. Further, the leaf spring 50 is formed with an opening 51 in which the vibration device 40 is placed.

A screw hole 52 is formed in the leaf spring 50. The leaf spring 50 is fixed to the chassis 60 using a fastening member such as a screw 53, for example. Further, the leaf spring 50 is fixed to the frame portion 30 by a fastening member such as a screw 54, for example.

The chassis 60 is a plate-shaped member, and the plate spring 50 is fixed thereto. An opening 61 for arranging the vibration device 40 is formed in the chassis 60. Furthermore, the chassis 60 is provided with a protrusion 62 that protrudes across the opening 61. Additionally, a screw hole 63 is formed in the chassis 60. The chassis 60 is fixed to the main body portion 20 by a fastening member such as a screw 64, for example.

The main board 70 is a board on which various electronic components and the like are mounted. The main board 70 is mounted with, for example, a control circuit for realizing a control unit (for example, the control unit 110 shown in FIG. 8) for controlling each component included in the input device 1. The main board 70 is arranged, for example, on the side opposite to the skin part 10 of the chassis 60 (Z-axis negative side). The main board 70 is a plate-shaped member, but is not limited to this.

The upper cover 80 is a member that covers both ends of the skin portion 10 in the X-axis direction in a plan view. The upper cover 80 is, for example, a plate-shaped member, and is flush with the surface of the skin portion 10 when the skin portion 10 and the upper cover 80 are attached to the main body portion 20 . The shape of the upper cover 80 is determined as appropriate depending on the shape of the pair of regulating portions 22 in plan view. The upper cover 80 is made of rubber, for example, but may also be made of a resin material.

The lower cover 90 is a cover for closing the opening on the other side (in the present embodiment, the Z-axis minus side) of the opening in the frame portion 21 of the main body portion 20 . The lower cover 90 is made of resin, metal, etc., but is not limited thereto. The lower cover 90 may be made of the same material as the main body portion 20. Note that in FIG. 2, illustration of the lower cover 90 is omitted.

In such an input device 1, the frame portion 30 moves in the negative direction of the Z-axis by the user's operation on the skin portion 10. The input device 1 detects a user's operation on the skin part 10 by having the push-in detection part 100 disposed on the Z-axis negative side of the frame part 30 detect movement of the frame part 30 . Therefore, the push detection section 100 is a part of a detection section that detects an operation from a user. The vibration device 40 is mechanically connected to the frame portion 30 (for example, the frame 32), and vibrates when the push-in detection portion 100 detects movement of the frame portion 30, thereby causing the frame portion 30 and the frame portion 32 to vibrate. Vibration is applied to the user via the epidermis 10. Detecting the movement of the frame portion 30 means detecting that the skin portion 10 has been operated.

Note that the vibration device 40 and the upper cover 80 are not essential components. Moreover, since the input device 1 uses a tact switch as the push-in detection section 100 as described later, it may be provided with only the tact switch without providing the vibration device 40. The tact switch has, for example, a metal dome. The metal dome is a disc spring made of stainless steel or the like, and can provide a tactile sensation to the user. In other words, the tact switch can provide a user with a feeling of operation due to the metal dome. Note that the tact switch is an example of the push detection section 100. Further, in this embodiment, a configuration will be described in which a tact switch is used as the push detection section 100 and a vibration device 40 is provided. With this configuration, it is possible to provide the user with a tactile sensation that cannot be expressed with a metal dome. Furthermore, in the case of a tact switch that does not include a metal dome, a configuration that includes the vibration device 40 can provide a tactile sensation to the user.

Note that the input device 1 does not need to include the push detection section 100. The input device 1 that does not include the push detection section 100 does not have a function (switch function) to detect a user's operation, and functions as a display device that displays a desired display (for example, an alert display, etc.).

[2. Composition of epidermis]
Next, the structure of the skin portion 10 will be further described with reference to FIG. 3. FIG. 3 is an exploded perspective view showing the skin portion 10 according to the present embodiment.

As shown in FIG. 3, the skin portion 10 includes a skin 11, a design portion, a cushion layer 13, and a frame 14. The design section has a design sheet 12. In this embodiment, the skin 11, the decorative sheet 12, and the cushion layer 13 are laminated in this order. That is, the skin portion 10 has a structure in which the design sheet 12 is sandwiched between the skin 11 and the cushion layer 13. Further, the outer skin 11, the decorative sheet 12, and the cushion layer 13 constitute a decorative layer.

The epidermis 11 constitutes the surface of the input device 1 and is a part that is directly touched by the user. In this embodiment, the skin 11 has light transparency so that the user can visually recognize the design. In plan view, the skin 11 covers both the portion of the design sheet 12 where the design is formed (for example, the transparent portion 12b1) and the portion where the design is not formed (for example, the light shielding portion 12b2) on the surface of the sheet portion 12a. Cover from the (Z-axis positive side) side. For example, the skin 11 covers the entire design sheet 12 in plan view. For example, the skin 11 has a part that covers the transparent part 12b1 and a part that covers the light-blocking part 12b2 that are integrally formed. Further, the portion of the epidermis 11 that is touched by the user is formed into a plate shape, for example. Further, the skin 11 is configured to collectively cover a plurality of first recesses 13a and second recesses 13b (see FIG. 5), which will be described later. In addition, in this specification, having light transmittance means that the transmittance is relatively higher than a portion having a light-shielding property, which will be described later. For example, it means that the transmittance is 10% or more. It may mean that the transmittance is 30% or more, or it may mean that the transmittance is 50% or more.

The skin 11 is made of, for example, a material that can reproduce a tactile sensation corresponding to the tactile sensation of a portion where the input device 1 is placed. The skin 11 may be made of, for example, a material that corresponds to the material of the portion where the input device 1 is placed (for example, the material of the interior material). When the skin 11 is embedded in a portion made of a leather-like material (for example, genuine leather), it is made of, for example, artificial leather having light transmittance. The skin 11 may be made of, for example, a nonwoven fabric impregnated with a urethane resin, or may be made of a urethane-based thermoplastic elastomer.

The design sheet 12 constitutes a design part, and is arranged between the skin 11 and the frame part 30, more specifically, between the skin 11 and the cushion layer 13, and forms a predetermined design. This is the layer where In this embodiment, the design sheet 12 includes a sheet portion 12a and a design layer 12b formed on the sheet portion 12a.

The sheet portion 12a is a base member on which the design layer 12b is formed, and is, for example, a plate-shaped member having light transmittance. The sheet portion 12a is made of a light-transmitting material. The material of the seat portion 12a may be the same as the material of the cushion layer 13, or may be different. Further, the sheet portion 12a may be formed of a material that is more flexible than the skin 11 and has better printability. Further, the seat portion 12a may be formed of a material having a smaller repulsive force than the outer skin 11. The sheet portion 12a is formed of rubber that is transparent to light. In this embodiment, the sheet portion 12a is a silicone rubber sheet made of transparent silicone rubber. Since the sheet portion 12a is a silicone rubber sheet, it is easy to form the design layer 12b on the sheet portion 12a by printing. Note that the sheet portion 12a is preferably free of voids from the viewpoint of suppressing deterioration in printability. Note that in this specification, transparent means having light transmittance and not being colored. Moreover, transparent may mean, for example, that the transmittance is 50% or more, or may mean that the transmittance is 70% or more.

The sheet portion 12a has a thickness (the length in the Z-axis direction, which corresponds to the wall thickness of the sheet portion 12a) from the viewpoint of making the sheet portion 12a easily bend locally when the skin portion 10 is operated. The thinner the better. The sheet portion 12a may be thinner than the skin 11. The thickness of the sheet portion 12a may be, for example, 2.0 mm or less, more preferably 1.0 mm or less, and even more preferably 0.5 mm or less. In addition, when the input device 1 is provided in a portion formed of genuine leather, the thinness of the sheet portion 12a allows the tactile sensation when the user operates the outer skin portion 10 to be close to the tactile sensation when pressing genuine leather. I can do it. Furthermore, since the sheet portion 12a is thin, it is possible to suppress the elastic force of the sheet portion 12a from acting. Note that the thickness of the sheet portion 12a is not limited to this, and may be appropriately determined depending on the material and the like.

In the sheet portion 12a, for example, a portion where the transmitting portion 12b1 is formed and a portion where the light shielding portion 12b2 is formed are integrally formed.

The design layer 12b includes a printed layer that forms a design by printing on the sheet portion 12a. The design layer 12b is formed on the front surface of the sheet portion 12a, but may be formed on the back surface (the surface on the Z-axis minus side) of the sheet portion 12a.

The design layer 12b includes a transmitting portion 12b1 that transmits light from a light source 33 (see light source 33 shown in FIG. 4) included in the frame portion 30, and a light blocking portion 12b2 that blocks light from the light source 33. A design is displayed by light transmitted through the transparent portion 12b1 of the design layer 12b. In addition, in FIG. 3, for the sake of clarity, the transparent part 12b1 is shown in black and the light-blocking part 12b2 is shown in white, but in reality, the transparent part 12b1 is transparent, and the parts other than the transparent part 12b1 are colored black. By doing so, the light shielding portion 12b2 is formed.

The transmitting portion 12b1 forms a first region 10a, and the light shielding portion 12b2 forms a second region 10b. For example, it can be said that the first area 10a is a transparent area for forming a design, which is formed by printing on the sheet part 12a, and the second area 10b is a light-blocking area, which is formed by printing on the sheet part 12a. . The transmissive area may be, for example, an area where no printing material for forming the light-blocking area is printed. Note that the transmitting portion 12b1 is an example of a first portion, and the light shielding portion 12b2 is an example of a second portion.

Note that the design layer 12b is not limited to the above configuration, and for example, the sheet portion 12a may be entirely printed (painted) in black, and the black paint may be removed by laser cutting into a shape corresponding to the transparent portion 12b1. may be configured. Therefore, in the present embodiment, printing includes not only printing a light-blocking area on the sheet portion 12a but also painting the entire surface of the sheet portion 12a black.

Note that the design sheet 12 covers the first recess 13a and the second recess 13b. For example, the design sheet 12 collectively covers the plurality of first recesses 13a and the plurality of second recesses 13b. For example, in plan view, each design formed on the design sheet 12 is arranged to overlap with two or more first recesses 13a and two or more second recesses 13b.

Note that even if the surface of the design sheet 12 on the negative side of the Z-axis (that is, the surface that contacts the second recess 13b of the cushion layer 13) is coated to improve the slipperiness with the cushion layer 13, good. Improving slipperiness here means making the decorative sheet 12 and the cushion layer 13 difficult to slip. The coating is, for example, a fluorine coat, but is not limited thereto.

In addition, from the viewpoint of suppressing the design sheet 12 from digging into the first recesses 13a of the cushion layer 13, the hardness of the design sheet 12 (for example, silicone rubber) is set to a level that does not allow the design sheet 12 to dig into the first recesses 13a of the cushion layer 13. It is preferable to have hardness, for example, harder than the cushion layer 13. The hardness of the silicone rubber is preferably 40 degrees or more, for example.

The cushion layer 13 is a layer having cushioning properties that is provided to provide a soft tactile sensation to the user when the user operates the skin portion 10. The cushion layer 13 is arranged on the back side (Z-axis negative side) of the outer skin 11 of the designed sheet 12.

In plan view, the cushion layer 13 covers both the portion of the design sheet 12 where the design is formed (for example, the transparent portion 12b1) and the portion where the design is not formed (for example, the light shielding portion 12b2) of the sheet portion 12a. Cover from the back side. The cushion layer 13 has light transmittance in order to guide light to the transmitting portion 12b1. For example, the cushion layer 13 covers the entire design sheet 12 in plan view. The cushion layer 13 is formed into a plate shape, for example. In the cushion layer 13, for example, a portion covering the transmitting portion 12b1 and a portion covering the light blocking portion 12b2 are integrally formed.

The cushion layer 13 is a layer with higher cushioning properties than the seat portion 12a. Although details will be described with reference to FIG. 5, the cushion layer 13 according to the present embodiment has a shape that can be compressed and deformed by pressing the outer skin 11. The cushion layer 13 is made of a light-transmitting material (for example, silicone rubber). In this embodiment, the cushion layer 13 is made of transparent silicone rubber. Thereby, by molding silicone rubber, etc., the cushion layer 13 can be easily produced using a common material. Further, since the cushion layer 13 is transparent, the light from the light source 33 can be transmitted through the cushion layer 13 without changing the color. Note that the cushion layer 13 may be formed of a urethane-based thermoplastic elastomer, urethane rubber, or the like.

Even if the cushion layer 13 is made of silicone rubber, it has a shape that can be compressed and deformed, so it becomes easily crushed by pressure on the skin 11 (the thickness of the cushion layer 13 becomes thinner in some areas), so it is difficult for the user to This makes it easier to give a soft texture. Further, from the viewpoint of providing a softer touch to the user, the hardness of the silicone rubber may be, for example, A40 or less.

Further, the cushion layer 13 is preferably thick in height (length in the Z-axis direction) from the viewpoint of easily providing a soft tactile sensation to the user when the user operates the skin portion 10. The cushion layer 13 may be higher than the design sheet 12 (for example, the sheet portion 12a), for example. Further, the cushion layer 13 may be higher than the epidermis 11. Note that the height relationship between the cushion layer 13, the outer skin 11, and the designed sheet 12 is not limited to this, and may be appropriately determined depending on the material and the like.

Note that in this embodiment, the cushion layer 13 is not made of foamable resin or the like. Since a cushioning material made of foamed resin may have voids of different sizes, shapes, etc. inside, it may be difficult to keep the operating load constant within the surface. That is, compared to silicone rubber, the operability tends to vary depending on the operating position of the skin 11. On the other hand, in this embodiment, since the cushion layer 13 is made of silicone rubber, the in-plane operating load can be easily made constant. Therefore, it is possible to realize the input device 1 with improved operability compared to a case where the cushion layer is formed of foamable resin or the like.

As described above, each of the skin 11 and the cushion layer 13 is formed spanning the transmitting portion 12b1 and the light blocking portion 12b2 in plan view. It can also be said that each of the skin 11 and the cushion layer 13 is formed spanning the first region 10a and the second region 10b in plan view. It can also be said that each of the skin 11 and the cushion layer 13 is formed spanning the switch portion and the non-switch portion in plan view.

In this embodiment, the skin 11 and the cushion layer 13 cover the entire design sheet 12 in plan view. For example, in plan view, the outer skin 11, the decorative sheet 12, and the cushion layer 13 may have the same size. The skin portion 10 has a three-layer structure including a skin 11, a designed sheet 12, and a cushion layer 13 in a region that may be touched by a user in a plan view. For example, in the skin part 10, both the cross-sectional structure of the first region 10a and the cross-sectional structure of the second region 10b have a three-layer structure of the skin 11, the designed sheet 12, and the cushion layer 13, and in each layer, The materials of the first region 10a and the second region 10b are the same.

Further, the skin 11, the decorative sheet 12, and the cushion layer 13 are laminated, for example, in contact with each other. Further, the skin 11, the decorative sheet 12, and the cushion layer 13 are held on the main body 20 so that, for example, the plate-like portions are parallel to each other.

The shape of the skin 11, the designed sheet 12, and the cushion layer 13 in plan view is rectangular, but may be square, circular, L-shaped, etc., and the shape is not particularly limited. In addition, the skin 11 and the cushion layer 13 are not limited to covering the entire design sheet 12 in plan view, but only need to cover at least one first region 10a and second region 10b.

In addition, although the example in which the design layer 12b is formed on the sheet|seat part 12a was demonstrated above, it is not limited to this. When the skin 11 is made of a material that allows the design layer 12b to be formed by printing, the design layer 12b may be formed on the skin 11 by direct printing. The design layer 12b may be formed on the surface of the skin 11 (the surface on the Z-axis positive side), or if the skin 11 has optical transparency, it may be formed on the back surface (the surface on the Z-axis negative side). Good too.

Note that when the design layer 12b is formed on the skin 11, the skin part 10 does not need to have the sheet part 12a. That is, the design portion may be constituted by the design layer 12b formed (for example, printed) on the outer skin 11. Further, for example, when the design layer 12b is formed on the skin 11, the skin 11 and the cushion layer 13 may be directly laminated.

The frame 14 is a rigid frame-shaped member and supports the outer edges of the skin 11, the decorative sheet 12, and the cushion layer 13.

Note that, in FIG. 3, illustration of fixing members such as screws 15 for fixing each component is omitted.

[3. Composition of frame part]
Next, the configuration of the frame section 30 will be further described with reference to FIG. 4. FIG. 4 is an exploded perspective view showing the frame section 30 according to this embodiment. Note that a vibration device 40 is also illustrated in FIG. 4 .

As shown in FIG. 4, the frame section 30 includes a sensor film 31, a frame 32, and a light source 33. The frame portion 30 is arranged to face the skin portion 10. Further, the vibration device 40 is arranged on the side of the light source 33 opposite to the skin 11 (Z-axis negative side).

The sensor film 31 is part of a detection unit that detects operations from the user. Specifically, the sensor film 31 is a sensor that is disposed on the opposite side of the cushion layer 13 from the outer skin 11 (Z-axis negative side) and detects the position where the outer skin 11 is operated (pressed) by the user. Sensor film 31 is arranged between cushion layer 13 and frame 32. In this embodiment, the sensor film 31 is a capacitive sensor film (electrostatic sensor film) that has light transparency. In plan view, the sensor film 31 has both the transparent portion 12b1 on which the design is formed in the design sheet 12 and the light shielding portion 12b2 where the design is not formed on the back surface (Z-axis minus side surface) side of the sheet portion 12a. Cover from. It can also be said that the sensor film 31 is formed astride the transmitting part 12b1 and the light shielding part 12b2 in plan view. For example, the sensor film 31 covers the entire design sheet 12 in plan view. For example, the sensor film 31 has a portion that covers the transmitting portion 12b1 and a portion that covers the light shielding portion 12b2 that are integrally formed.

The sensor film 31 includes a plate-shaped base material 31a, a sensor electrode 31b disposed on the base material 31a, and a flexible board portion 31c for connection to the main board 70. In this embodiment, the base material 31a and the sensor electrode 31b have light transmittance. That is, in this embodiment, the base material 31a is a transparent substrate, and the sensor electrode 31b is a transparent electrode. Furthermore, it can be said that the sensor electrode 31b is an electrostatic sensor electrode.

The base material 31a is a film on which the sensor electrode 31b is formed. The film may be, for example, a PET (Polyethlene Terephthalate) film. Note that the base material 31a is not limited to being a film, and may be a transparent substrate.

The sensor electrodes 31b are arranged corresponding to the designs formed on the design sheet 12, and are arranged, for example, at positions facing each of the plural designs. The sensor electrode 31b is provided for each design so that at least a portion of the sensor electrode 31b overlaps the design in plan view. For example, the sensor electrode 31b is provided so as to include a design in a plan view. For example, the sensor electrodes 31b are provided one-to-one with respect to the design.

Note that a plurality of sensor electrodes 31b are not limited to being arranged; for example, if there is only one design, only one sensor electrode 31b may be arranged.

Note that, for example, the first region 10a may be a region where the sensor electrode 31b is provided in a plan view. Further, for example, the second region 10b may be a region where the sensor electrode 31b is not provided in plan view.

Note that the sensor film 31 is not limited to a capacitance type, and may be configured to detect the position where the user operates the epidermis 10 using other methods such as an ultrasonic type or an electromagnetic induction type.

The flexible substrate section 31c is a substrate for outputting the detection results of each sensor electrode 31b to the main substrate 70. The sensor film 31 and the main board 70 are electrically connected by connecting one end of the flexible board section 31c to a connector or the like of the main board 70.

The sensor film 31 further includes an electrostatic IC (Integrated Circuit) (not shown) which is a processing unit that detects the position where the user's finger has touched based on the change in capacitance caused by the user's contact with the epidermis 11. (not included) may be included. For example, the electrostatic IC outputs position information indicating the position touched by the user's finger to the control unit 110.

The frame 32 moves in the negative Z-axis direction when the user operates the skin part 10 and receives pressure from the skin part 10 in the negative Z-axis direction. The frame 32 is a plate-shaped member disposed on the opposite side of the cushion layer 13 from the outer skin 11 (Z-axis negative side). In this embodiment, frame 32 is placed between sensor film 31 and light source 33. Frame 32 has rigidity. Furthermore, in this embodiment, the frame 32 has light transmittance.

The frame 32 is provided so as to cover the outer skin 11, the decorative sheet 12, and the cushion layer 13 in a plan view. The frame 32 is formed across the first region 10a and the second region 10b in plan view. In the present embodiment, the frame 32 covers the entire plate-like portions (portions touched by the user) of the outer skin 11, the designed sheet 12, and the cushion layer 13 in plan view. Thereby, the frame 32 similarly moves in the negative Z-axis direction whether the user operates the first area 10a or the second area 10b. That is, the frame 32 moves even when the user operates the second area 10b. Note that the frame 32 is held by the main body portion 20 so as to be parallel to the cushion layer 13, for example.

A through hole 32a is formed in the frame 32 and is a space through which light from the light source 33 passes. The through holes 32a are provided, for example, corresponding to each of the plurality of light emitting elements 33b included in the light source 33. It can also be said that the through holes 32a are provided corresponding to the design of the design sheet 12, for example. Furthermore, since light passes through the through holes 32a, it can be said that the frame 32 has light transmittance.

In this embodiment, since the design of the design sheet 12 is smaller than the fingertip, the size of the through hole 32a is also smaller than the fingertip in accordance with the size of the design. Therefore, the skin portion 10 does not bend and become difficult to press during the pressing operation. However, if the design is larger than the fingertip and the through hole 32a becomes larger accordingly, and the skin portion 10 bends during the pressing operation, the light from the light emitting element 33b may be guided to the through hole 32a. A light guide (not shown) may be provided. That is, the frame 32 may have a light guide in a portion of the frame 32 that faces the design and the light source 33 (for example, the light emitting element 33b). Note that the light guide is not limited to the above configuration, and may be used in a configuration in which the design is smaller than a fingertip.

Further, the frame 32 is not limited to having the through hole 32a formed therein, and the through hole 32a may not be formed therein. In this case, for example, the frame 32 is constructed by two-color molding made of a light-transmitting resin and a light-blocking resin.

Further, the frame 32 has an end portion 32b that is a convex portion that protrudes toward the negative side of the X-axis, and an end portion 32c that is a convex portion that protrudes toward the positive side of the X-axis. The end portions 32b and 32c are, for example, portions that come into contact with the leaf spring 50.

The sensor film 31 and the light source 33 are fixed to the frame 32 using fastening members such as screws, for example.

The light source 33 is arranged on the opposite side of the frame 32 from the cushion layer 13 (Z-axis negative side) and illuminates the design. The light source 33 includes a substrate 33a and a plurality of light emitting elements 33b.

The substrate 33a is a plate-shaped member on which a plurality of light emitting elements 33b are arranged. The substrate 33a is a rigid substrate, but may be a flexible substrate.

The light emitting element 33b emits light for displaying a design. The light emitting element 33b is provided in each of the plurality of designs. The light emitting elements 33b are arranged, for example, at positions facing the plurality of designs on the substrate 33a. The light emitting element 33b is, for example, an LED (Light Emitting Diode), but is not limited thereto.

The plurality of light emitting elements 33b may emit light of mutually different colors (for example, a color according to the design), or may emit light of one color (for example, white).

The screw 34 is a fastening member for fixing the board 33a to the frame 32.

In this embodiment, the vibration device 40 is fixed to the frame portion 30 together with the substrate 33a. Therefore, the substrate 33a and the vibration device 40 are provided so as to be in direct contact with the frame portion 30, regardless of whether or not the frame portion 30 moves in the negative Z-axis direction.

In such a frame section 30, when the skin section 10 is operated by a user, for example, the sensor film 31, the frame 32, and the light source 33 move together in the Z-axis direction.

Note that the sensor film 31 is not an essential component.

[4. Cross-sectional structure of input device]
Next, the cross-sectional structure of the input device 1 will be further described with reference to FIG. 5. FIG. 5 is a sectional view showing the input device 1 according to this embodiment. Note that FIG. 5 shows a cross-sectional view of the input device 1 in a state where the skin portion 10 is not operated by the user, that is, in an initial state. FIG. 5 shows a cross-sectional view of the input device 1 taken along a YZ plane parallel to the Z-axis direction.

As shown in FIG. 5, the input device 1 includes a skin portion 10 (see FIG. 3, for example), a frame 32, a light source 33, a leaf spring 50, and a chassis 60 in this order from the front side (Z-axis positive side). , held parallel to each other. The skin portion 10 is integrally formed from an end on the X-axis plus side to an end on the X-axis minus side. That is, in each of the first region 10a and the second region 10b (see FIG. 1, for example), the skin portion 10 has the same structure and is made of the same material.

Light emitted by the light emitting element 33b of the light source 33 passes through the through hole 32a and the skin portion 10, and is emitted to the outside of the input device 1. Thereby, the input device 1 can allow the user to visually recognize a display corresponding to the design formed on the design sheet 12.

The input device 1 may further include a push-in detection unit 100 on the side of the frame portion 30 opposite to the skin portion 10 (Z-axis negative side) for detecting that the user has operated the skin portion 10. The push-in detection unit 100 is composed of, for example, a tact switch. The push-in detection unit 100 is arranged, for example, at the end of the substrate 33a in the X-axis direction, but is not limited thereto. The push detection section 100 is mechanically connected to the frame 32. Mechanically connected here means that the push-in detection section 100 can detect movement of the frame 32 in the negative Z-axis direction.

The push-in detection unit 100 is arranged on the back side (Z-axis minus side) of the cushion layer 13, and detects an operation (for example, a press) from a user. The push-in detection unit 100 is configured to detect an operation by the user, for example, when the cushion layer 13 is compressed and deformed and the epidermis 11 is further pressed. For example, the push detection unit 100 is configured to detect a user's operation when a load of a certain level or more is applied to the epidermis 11. For example, the push detection unit 100 is configured to detect a push when the outer skin 11 is further pushed while the cushion layer 13 is compressed and deformed. The state in which the cushion layer 13 is compressively deformed means a state in which the cushion layer 13 is compressively deformed to a predetermined level or more, and may be, for example, a state in which it is not compressively deformed any more, or a state in which it is less compressively deformed than the initial state.

The push detection unit 100 may be a load sensor that detects a load applied to the skin portion 10 based on movement of the frame 32 in the negative Z-axis direction due to the manipulation of the skin portion 10. The load sensor is not particularly limited as long as it can detect the load applied to the skin portion 10, but is, for example, a piezoelectric sensor. The load sensor includes, for example, a piezoelectric element. Note that the push detection section 100 may be, for example, a stroke sensor that detects the load applied to the skin section 10 as the amount of displacement of the frame section 30 (for example, the frame 32). The stroke sensor detects the amount of displacement of the frame portion 30 as a stroke amount using, for example, an optical sensor, a radio wave sensor, a sonic sensor, or the like. The stroke sensor can detect a small stroke amount, for example, about 0.1 mm. The stroke sensor may detect that the user has operated the epidermis 10 by detecting a stroke amount of about 0.1 mm, for example. Note that the tact switch used in this embodiment can also detect a stroke amount of about 0.1 mm to 0.2 mm. The push detection section 100 outputs the detection result to the control section 110, which will be described later.

Note that the push detection section 100 may be of a contact type or a non-contact type. Further, the push-in detection section 100 may be of a capacitive type or a mechanical type. Further, when the input device 1 includes a switch such as a tact switch, the sensors such as the load sensor described above may not be provided. The push detection section 100 is an example of a detection section.

In addition, the cushion layer 13 has a convex shape in the lamination direction in a cross-sectional view when cut along a plane parallel to the lamination direction (Z-axis direction) of the skin 11 and the design sheet 12, and the back side of the convex shape has a concave shape. It is formed to have a plurality of recesses. Specifically, in a cross-sectional view when cut along a plane parallel to the lamination direction of the skin 11 and the design sheet 12, the cushion layer 13 has a width in the lamination direction with respect to a center line perpendicular to the lamination direction (see FIG. 6). A first recess 13a that is convex in a first direction (direction from the Z-axis positive side to a Z-axis negative side) and has a concave back side of the convex shape in the first direction; A convex shape in a second direction opposite to the first direction in the lamination direction with respect to the line (direction from the Z-axis minus side to the Z-axis plus side), and the back side of the convex shape in the second direction is a concave shape. 2 recesses 13b. Further, the cushion layer 13 has at least one of the first recess 13a and the second recess 13b, for example, also above the frame 14 (on the Z-axis positive side).

Note that the center line is an imaginary line passing through the center of the height A (see FIG. 6) of the cushion layer 13 and parallel to the Y-axis direction, and is an example of a reference line. Note that the reference line is not limited to passing through the center of the height A, and may be any virtual line that passes through any position of the height A and is parallel to the Y-axis direction. Further, the reference line is not limited to being perpendicular to the lamination direction, but may be parallel to a direction intersecting the lamination direction in cross-sectional view.

In the cushion layer 13, on the first direction side from the center line, a plurality of first recesses 13a are arranged at intervals, and on the second direction side from the center line, a plurality of second recesses 13b are arranged at intervals. Arranged. In the cushion layer 13, first recesses 13a and second recesses 13b are alternately and continuously formed in a cross-sectional view in the YZ plane. That is, the first recesses 13a and the second recesses 13b are arranged alternately along the Y-axis direction (an example of the first direction). For example, the plurality of first recesses 13a and second recesses 13b are formed in a wavy shape (corrugated plate shape) when viewed in cross section on the YZ plane. For example, a cross-sectional view of one second recess 13b and one first recess 13a connected to the second recess 13b in the YZ plane is formed in the shape of a sine curve with one period centered on the reference line. Ru. The wavy shape refers to a sine curve shape, but may also be, for example, a triangular wave shape (zigzag shape).

The thickness of the cushion layer 13 is preferably thin, for example, from the viewpoint of giving a soft tactile sensation to the user, and is thinner than, for example, the design sheet 12 (for example, the sheet portion 12a), but is not limited thereto.

In the cushion layer 13 configured as described above, a space 13c is formed between the cushion layer 13 and the design sheet 12, and a space 13d is formed between the cushion layer 13 and the sensor film 31. By forming the spaces 13c and 13d in this way, the cushion layer 13 can be easily compressed and deformed by pressing the outer skin 11. This makes it easier for the input device 1 to provide a soft tactile sensation to the user.

Note that all of the plurality of spaces 13c formed in the cushion layer 13 are collectively covered by the design sheet 12, and all of the plurality of spaces 13d formed in the cushion layer 13 are covered by the sensor film 31. covered all together.

Note that the cushion layer 13 (the first recess 13a and the second recess 13b) is, for example, integrally formed. The cushion layer 13 is produced, for example, by molding transparent silicone rubber. In this way, the cushion layer 13 in this embodiment is a rubber molded product having an uneven cross-sectional shape. Note that the method for manufacturing the cushion layer 13 is not limited to this.

Here, the structure of the cushion layer 13 will be further explained with reference to FIGS. 6 and 7. FIG. 6 is a cross-sectional perspective view showing the cushion layer 13 according to this embodiment. FIG. 7 is a perspective view showing the cushion layer 13 according to this embodiment. FIG. 6 is a perspective view of the cushion layer 13 cut along the YZ plane, seen from a viewpoint moved from the X-axis direction to the Z-axis plus side.

As shown in FIGS. 6 and 7, in the cushion layer 13, a plurality of first recesses 13a and a plurality of second recesses 13b extend in the X-axis direction in a plan view of the input device 1. The cushion layer 13 includes first recesses 13a and second recesses 13b arranged alternately (for example, consecutively) along the Y-axis direction, and a plurality of first recesses 13a arranged along the Y-axis direction. It can also be said that the second recessed portion 13b extends in a direction (an example of the second direction) intersecting the Y-axis direction in a plan view of the input device 1. The direction intersecting the Y-axis direction is, for example, the X-axis direction orthogonal to the Y-axis direction, but is not limited thereto.

The plurality of first recesses 13a and the plurality of second recesses 13b extend in directions parallel to each other. In other words, in the cushion layer 13, the plurality of spaces 13c and the plurality of spaces 13d extend in directions parallel to each other. The cushion layer 13 is a wavy member (for example, a wavy rubber member).

In the cushion layer 13, for example, the design sheet 12 and the top 13b1 of the second recess 13b are in line contact, and the sensor film 31 and the top 13a1 of the first recess 13a are in line contact. Note that line contact here means contact in a long shape in a plan view, and in addition to contact in a line shape, there is a portion where the top portions 13a1 and 13b1 are elastically deformed and become flat. This intention also includes contact with.

Note that the top portions 13a1 and 13b1 are curved in cross-sectional view.

The width W (pitch) of the adjacent second recesses 13b is preferably narrow from the viewpoint of suppressing discomfort to the user. The width W may be, for example, 4 mm or less, preferably 3 mm or less, and more preferably 2 mm or less. Further, the height A of the cushion layer 13 is preferably high from the viewpoint of providing a soft tactile sensation to the user when the user operates the skin portion 10. The height A may be, for example, 2 mm or more, preferably 3 mm or more, and more preferably 4 mm or more. Further, the width W and the height A may be the same length.

When such a skin portion 10 is operated by a user, the skin 11 and the decorative sheet 12 are bent toward the negative Z-axis side, and the cushion layer 13 is compressed toward the negative Z-axis side. That is, the epidermis 10 locally deforms when operated by the user. The skin portion 10 can provide the user with a soft tactile sensation due to the compression of the cushion layer 13. Since the skin part 10 has a cushion layer 13 that is integrally formed over the first region 10a and the second region 10b, the user can operate (for example, touch) either the first region 10a or the second region 10b. can also provide the user with a similar soft tactile sensation.

Further, when the outer skin 11 of the cushion layer 13 is pressed, the portion (slanted portion) between the top portions 13a1 and 13b1 of the pressed portion is bent so as to expand outward in plan view, and as a result, the cushion layer 13 is bent so as to expand outward in plan view. It is compressed and deformed to become thinner. It can also be said that the cushion layer 13 undergoes buckling deformation. Since the thickness of the cushion layer 13 is partially thinner (the height is lower), the user can press the epidermis 11 with less force than when the entire thickness of the cushion layer 13 is thinner. . That is, by providing the cushion layer 13, in addition to giving the user a soft tactile sensation, it is possible to improve operability.

Further, since the frame portion 30 is integrally formed over the first region 10a and the second region 10b and has rigidity, the user can operate either the first region 10a or the second region 10b. (for example, contact), it moves in the negative Z-axis direction without deforming. Therefore, the frame portion 30 is less likely to make the user feel a difference in tactile sensation depending on whether or not the frame portion 30 is moved, compared to a case where the frame portion 30 does not move even if the second region 10b is operated, for example.

As a result, the input device 1 can provide the same soft tactile sensation no matter where on the skin portion 10 the user touches (presses), so that it is possible to prevent the user from feeling uncomfortable about the tactile sensation. For example, when the input device 1 is placed in a position where the user can easily touch it, such as on an armrest, it is possible to prevent the user from feeling uncomfortable with the tactile sensation. For example, the input device 1 can provide the user with the same tactile sensation no matter where on the epidermis 10 the user touches when the light source 33 is not lit, thereby suppressing the user's discomfort with the tactile sensation. be able to. In other words, when the user touches the epidermis 10 without intending to operate the device, the user can feel the same tactile sensation no matter where on the epidermis 10 the user touches.

Further, for example, the cushion layer 13 is compressed and deformed by the user's operation on the skin portion 10 . That is, when the vibration device 40 generates vibration, the cushion layer 13 is compressed. Therefore, in the input device 1, vibrations are not easily absorbed by the cushion layer 13, and the tactile sensation of the vibration device 40 can be effectively transmitted to the user (to the user's fingers). Further, when the input device 1 includes a tact switch, the click feeling of the tact switch is difficult to be absorbed by the cushion layer 13, so the input device 1 can effectively convey the click feeling to the user. In other words, the input device 1 can reduce the discomfort of the tactile sensation given to the user without impairing the tactile sensation given to the user.

Further, the cushion layer 13 is formed to have a plurality of the first recesses 13a and second recesses 13b as described above in a cross-sectional view in the YZ plane, and for example, the plurality of first recesses 13a and second recesses 13b are formed in a wave shape. Therefore, the inclination angle of the portion (slope portion) between the top portions 13a1 and 13b1 of the cushion layer 13 with respect to the center line (reference line) can be made small (gentle), and the top portions 13a1 and 13b1 of the cushion layer 13 can be A difference in brightness is unlikely to occur between the light passing through the cushion layer 13 and the light passing through the portion (slanted portion) between the top portions 13a1 and 13b1 of the cushion layer 13. Therefore, according to the cushion layer 13, occurrence of brightness unevenness due to the shape of the cushion layer 13 can be suppressed.

[5. Functional configuration of input device]
Next, the functional configuration of the input device 1 will be described with reference to FIG. 8. FIG. 8 is a block diagram showing the functional configuration of the input device 1 according to this embodiment.

As shown in FIG. 8, the input device 1 includes a sensor film 31, a light source 33, a vibration device 40, a push detection section 100, and a control section 110 as functional configurations.

The control unit 110 is a control device that controls each component of the input device 1. The control unit 110 displays the design by controlling the light source 33 to emit light. Furthermore, the control unit 110 determines which design has been operated by the user based on the position information from the sensor film 31, and performs processing related to control according to the operated design. Note that the control unit 110 may execute the processing performed by the electrostatic IC described above.

Furthermore, when the control unit 110 acquires a detection result indicating that the user has operated the epidermis 10 from the push detection unit 100, it outputs control information for vibrating the vibration device 40. For example, the control unit 110 acquires from the detection result of the push detection unit 100 that the user has operated the skin part 10, and uses the position information from the sensor film 31 to determine the position operated by the user (which design was operated). Get based on. Then, the control unit 110 outputs a control signal according to the design operated by the user to the outside. Further, the control unit 110 may cause the vibration device 40 to vibrate in a manner (eg, frequency, vibration intensity, etc.) according to the design operated by the user.

Note that when the second region 10b is operated by the user, the control unit 110 acquires the detection result from the push detection unit 100, but does not acquire the position information from the sensor film 31. In this case, the control unit 110 does not output control information for vibrating the vibration device 40. That is, the control unit 110 does not cause the vibration device 40 to vibrate. For example, when the control unit 110 acquires both the position information from the sensor film 31 and the detection result from the push detection unit 100, it outputs control information for vibrating the vibration device 40.

The control unit 110 may be realized, for example, by a processor that executes a program for controlling each component and a memory that stores the program, or may be realized by a dedicated circuit. The control unit 110 may be realized by, for example, an ECU (Electronic Control Unit).

(Variations of the embodiment)
Each modification of the input device 1 according to the embodiment will be described below with reference to FIGS. 9 to 15. Note that in each modification, differences from the embodiment will be mainly explained, and descriptions of contents that are the same or similar to the embodiment will be omitted or simplified. In each modification, the structure of the cushion layer is different from the embodiment.

(Modification 1 of the embodiment)
In the embodiments described above, the cushion layer is composed of one wavy member, but the cushion layer is not limited to this, and may be composed of a member having two-dimensional irregularities. The input device 1 according to this modification will be explained with reference to FIGS. 9 to 10B. FIG. 9 is a perspective view showing the cushion layer 113 according to this modification. FIG. 10A is a cross-sectional view showing the cushion layer 113 according to this modification example, taken along the Xa-Xa cutting line shown in FIG. FIG. 10B is a cross-sectional view showing the cushion layer 113 according to this modification, taken along the Xb-Xb cutting line shown in FIG. FIG. 10A is a cross-sectional view of the cushion layer 113 cut along the second row in which the first recess 113b1 and the second recess 113b2 of the second wavy portion 113b are lined up, and FIG. It is a sectional view of the cushion layer 113 cut along the first row in which the recessed part 113a1 and the second recessed part 113a2 are lined up.

As shown in FIGS. 9 to 10B, the cushion layer 113 includes a plurality of first recesses 113a1 and a second recess 113a2, and a plurality of first recesses 113b1 and second recesses 113b2, each of which is arranged two-dimensionally. have In this modification, the first row in which the first recess 113a1 and the second recess 113a2 (see FIG. 10B) are arranged continuously in the first wavy portion 113a, and the first row in which the first recess 113b1 and the second recess 113a2 in the second wavy portion 113b are arranged continuously A second row in which two concave portions 113b2 (see FIG. 10A) are consecutively arranged are arranged alternately with each other in each of the X-axis direction and the Y-axis direction. For example, in plan view, the first recess 113a1 in the first wavy portion 113a and the second recess 113b2 in the second wavy portion 113b are arranged in a zigzag shape in each of the X-axis direction and the Y-axis direction. A first wavy portion 113a and a second wavy portion 113b are arranged. The cushion layer 113 has a wavy shape when viewed from both the X-axis direction and the Y-axis direction. The first recesses 113a1 and 113b1 and the second recesses 113a2 and 113b2 are examples of a plurality of recesses.

The shapes of the first recesses 113a1 and 113b1 and the second recesses 113a2 and 113b2 in a plane are circular, but may be polygons such as quadrangles and hexagons, or other shapes. It's okay.

As shown in FIG. 10A, the second wavy portion 113b is located in the stacking direction with respect to the second center line perpendicular to the stacking direction in a cross-sectional view when cut along a plane parallel to the stacking direction (for example, YZ plane). A first recess 113b1 that is convex in a first direction (direction from the Z-axis positive side to a Z-axis negative side) and has a concave back side of the convex shape in the first direction; 2. It has a convex shape in a second direction opposite to the first direction in the lamination direction with respect to the center line (from the Z-axis minus side to the Z-axis plus side), and the back side of the convex shape in the second direction is concave. It has a second recess 113b2.

In the cushion layer 113, on the first direction side from the second center line, a plurality of first recesses 113b1 are arranged at intervals, and on the second direction side from the second center line, the second recesses 113b2 are arranged at intervals. Multiple lines are arranged with spaces between them. In the cushion layer 113, first recesses 113b1 and second recesses 113b2 are alternately and continuously formed in a cross-sectional view in the YZ plane. That is, the first recesses 113b1 and the second recesses 113b2 are arranged alternately along the Y-axis direction (an example of the first direction). For example, the first recesses 113b1 and the second recesses 113b2, which are arranged alternately, are formed in a wavy shape (corrugated plate shape) when viewed in cross section on the YZ plane.

Note that the second center line is an imaginary line passing through the center of the second wavy portion 113b of the cushion layer 113 in the Z-axis direction and parallel to the Y-axis direction, and is an example of a reference line.

Note that the portion between the top portions 113b11 and 113b22 is an example of an inclined portion. The length of the top portions 113b11 and 113b22 in the Z-axis direction is, for example, A/2, but is not limited to this.

Note that the broken line shown in FIG. 10A is a straight line or a plane that connects the bottom of the upper surface of the first recess 113b1.

Although FIG. 10A shows a cross section taken along a cutting line along the Y-axis direction, a cross section taken along a cutting line along the X-axis direction also has a similar shape.

As shown in FIG. 10B, the first wavy portion 113a is located in the stacking direction with respect to the first center line perpendicular to the stacking direction in a cross-sectional view when cut along a plane parallel to the stacking direction (for example, an XZ plane). A first recess 113a1 that is convex in a first direction (direction from the Z-axis positive side to a Z-axis negative side) and has a concave back side of the convex shape in the first direction; It has a convex shape in a second direction opposite to the first direction in the lamination direction with respect to the first center line (from the Z-axis minus side to the Z-axis plus side), and the back side of the convex shape in the second direction is concave. It has a second recess 113a2.

In the cushion layer 113, on the first direction side from the first center line, a plurality of first recesses 113a1 are arranged at intervals, and on the second direction side from the first center line, the second recesses 113a2 are arranged at intervals. Multiple lines are arranged with spaces between them. In the cushion layer 113, first recesses 113a1 and second recesses 113a2 are alternately and continuously formed in a cross-sectional view in the XZ plane. That is, the first recesses 113a1 and the second recesses 113a2 are arranged alternately along the X-axis direction (an example of the second direction). For example, the first recesses 113a1 and the second recesses 113a2, which are arranged alternately, are formed in a wavy shape (corrugated plate shape) in a cross-sectional view in the XZ plane.

Note that the first center line is an imaginary line passing through the center of the first wavy portion 113a of the cushion layer 113 in the Z-axis direction and parallel to the X-axis direction, and is an example of a reference line. The first center line is a straight line parallel to the second center line. Further, the first center line is different from the second center line in the stacking direction, and is located on the first direction side (Z-axis minus side) than the second center line.

Note that the portion between the top portions 113a11 and 113b22 is an example of an inclined portion. The length of the top portions 113a11 and 113a22 in the Z-axis direction is, for example, A/2, but is not limited to this.

Note that the broken line shown in FIG. 10B is a straight line or a plane connecting the bottom of the lower surface side of the second recess 113a2.

Note that although FIG. 10B shows a cross section taken along a cutting line along the X-axis direction, a cross section taken along a cutting line along the Y-axis direction also has a similar shape.

A first portion including the top portion 113b11 shown in FIG. 10A (for example, the portion on the Z-axis minus side from the broken line in the first recessed portion 113b1) and a second portion including the top portion 113a22 shown in FIG. The portion on the Z-axis plus side) is a common portion of the cushion layer 113. For example, the first portion and the second portion at the intersection of the two cutting lines shown in FIG. 9 are a common portion. That is, the first recess 113a1 and the second recess 113b2 are connected via the first recess 113b1 and the second recess 113a2.

The cushion layer 113 can be easily compressed and deformed by pressing the outer skin 11 . Furthermore, when the skin 11 is pressed, the portion (slanted portion) between the top portions 113a22 and 113a11 becomes easy to bend so as to spread outward in a plan view also in the X-axis direction. This makes it easier for the input device 1 to provide a soft tactile sensation to the user.

Note that the shapes of the first recesses 113a1 and 113b1 are the same, but may be different from each other. Further, the shapes of the second recesses 113a2 and 113b2 are the same, but may be different from each other. Moreover, although the plurality of first recesses 113a1 and second recesses 113b2 are arranged at equal intervals, they may be arranged at different intervals. Moreover, although the plurality of first recesses 113b1 and second recesses 113a2 are arranged at regular intervals, they may be arranged at different intervals.

(Modification 2 of embodiment)
In the above embodiment, an example was explained in which the cushion layer 13 is composed of one wavy member, but the cushion layer 13 is not limited to this, and may be composed of two or more wavy members. The input device 1 according to this modification will be described with reference to FIG. 11. FIG. 11 is a perspective view showing a cushion layer 213 according to this modification.

As shown in FIG. 11, the cushion layer 213 includes a first wavy member 213a and a second wavy member 213b. The first wavy member 213a has the same configuration as the cushion layer 13 according to the first embodiment except for the height A. The second wavy member 213b is obtained by rotating the first wavy member 213a about the Z axis (rotation axis).

The first wavy member 213a is lower than the height A of the cushion layer 13 according to the embodiment. The height of the first wavy member 213a is, for example, A/2, but is not limited thereto. If the pitch between the adjacent first recesses 13a or the adjacent second recesses 13b in the first wavy member 213a is p1 (width W), then the distance between the top 13a1 of the first recess 13a and the second recess 13b in the first wavy member 213a is p1 (width W). The length of the top portion 13b1 in the stacking direction (Z-axis direction) is less than p1.

The second wavy member 213b is lower than the height A of the cushion layer 13 according to the embodiment. The height of the second wavy member 213b is, for example, A/2, but is not limited thereto. If the pitch between the adjacent first recesses 13a or the adjacent second recesses 13b in the second wavy member 213b is p2 (width W), then the distance between the top 13a1 of the first recess 13a and the second recess 13b in the second wavy member 213b is p2 (width W). The length of the top portion 13b1 in the stacking direction is less than p2.

Further, in the second wave-like member 213b, the first recesses 13a and the second recesses 13b are arranged alternately (for example, continuously) along the X-axis direction (an example of the second direction), and A plurality of first recesses 13a and second recesses 13b arranged along the input device 1 extend in a direction (an example of a third direction) intersecting the X-axis direction in a plan view of the input device 1. The direction intersecting the X-axis direction is, for example, the Y-axis direction orthogonal to the X-axis direction, but is not limited thereto.

In plan view, the direction in which the first recess 13a and the second recess 13b of the first wavy member 213a extend (the X-axis direction, an example of the second direction), and the direction in which the first recess 13a and the second recess 13b of the second wavy member 213b extend It intersects with the direction in which the second recess 13b extends (the Y-axis direction, which is an example of the first direction), and in this modification, it intersects at right angles. That is, in this modification, the first direction and the third direction are parallel directions in plan view.

Note that the first wavy member 213a and the second wavy member 213b are arranged in an overlapping manner. Arranging the first wavy member 213a and the second wavy member 213b in an overlapping manner means that the top 13b1 of the second recess 13b of the first wavy member 213a contacts the top 13a1 of the first recess 13a of the second wavy member 213b. In addition, another member (for example, a plate-shaped member) is provided between the first wavy member 213a and the first wavy member 213a, and the first wavy member 213a is disposed through the other member. and the first wavy member 213a are arranged. The first wavy member 213a and the second wavy member 213b may be fixed by a fixing member, or may be simply placed on the second wavy member 213b on the first wavy member 213a.

Note that another member (for example, a plate-shaped member) may be provided between the first wavy member 213a and the design sheet 12 or between the second wavy member 213b and the sensor film 31. good.

(Variation 3 of the embodiment)
In the above embodiment, the top portions 13a1 and 13b1 of the cushion layer 13 are curved in cross-sectional view, but the present invention is not limited to this, and the top portions 13a1 and 13b1 may be flat. The input device 1 according to this modification will be described with reference to FIG. 12. FIG. 12 is a cross-sectional perspective view showing the cushion layer 313 according to this modification. FIG. 12 is a perspective view of the cushion layer 313 cut along the YZ plane, seen from a viewpoint moved from the X-axis direction to the Z-axis minus side.

As shown in FIG. 12, the cushion layer 313 may have a flat surface 313b1 at the top of the second recess 313b in a state where no stress is applied. The plane 313b1 has, for example, a rectangular shape extending in the X-axis direction in plan view. The cushion layer 313 makes surface contact with the design sheet 12 through the plane 313b1. Planar contact means that the cushion layer 313 and the design sheet 12 contact in a planar shape (for example, in a rectangular shape extending in the X-axis direction) while the cushion layer 313 is not compressively deformed.

Note that instead of forming the flat surface 313b1 in the second recess 313b, or in addition to the flat surface 313b1, a flat surface may be formed in the top 13a1 of the first recess 13a.

(Modification 4 of embodiment)
In the embodiments described above, an example in which the cushion layer 13 is realized by one structure has been described, but the cushion layer 13 is not limited to this, and may be formed by fitting one or more block bodies. The structure of a cushion layer including one or more block bodies will be described with reference to FIG. 13. FIG. 13 is a plan view showing the configuration of the cushion layer 413 according to this modification.

As shown in FIG. 13, the cushion layer 413 includes a main body portion 413a and a block body 413b. Although three block bodies 413b are provided in the example of FIG. 13, the number of block bodies 413b is not particularly limited, and may be one or two, or four or more.

The main body portion 413a is a plate-shaped portion that has a through hole (not shown) that penetrates in the thickness direction (Z-axis direction), and the block body 413b is fitted into the through hole. The main body portion 413a is a portion (second portion) that overlaps with a region of the cushion layer 413 in which no design is formed in a plan view. The main body portion 413a is, for example, a portion that overlaps with the second region 10b in plan view.

The light transmittance of the main body portion 413a is lower than the light transmittance of the block body 413b, and may have a light blocking property, for example. Having a light-shielding property means that the transmittance is relatively lower than that of a part that has a light-transmitting property.For example, it may mean that the transmittance is less than 10%, or it may mean that the light is completely blocked. (transmittance is substantially zero). Note that the main body portion 413a may be transparent.

The main body portion 413a is manufactured by, for example, molding silicone rubber, but is not limited thereto.

The block body 413b is fitted into a through hole formed in the main body portion 413a. For example, the block body 413b is detachably fitted into the main body portion 413a. The block body 413b constitutes a portion (first portion) of the cushion layer 413 that overlaps with the area in which the design is formed, in a plan view. The block body 413b is, for example, a portion that overlaps with the first region 10a in plan view.

The light transmittance of the block body 413b may be higher than the light transmittance of the main body portion 413a. Further, the block body 413b may be transparent or colored to transmit light, for example. For example, the block body 413b may be transparent or may be colored with light transmittance.

The block body 413b is produced, for example, by molding silicone rubber, but is not limited thereto. Further, the shape of the block body 413b in plan view is not limited to a rectangular shape.

Here, the main body portion 413a and the block body 413b have the same cross-sectional shape. That is, the first recess 13a and the second recess 13b are formed in the main body portion 413a and the block body 413b, respectively. The first recess 13a and second recess 13b formed in the main body 413a and the first recess 13a and second recess 13b formed in the block body 413b have, for example, the same size, shape, and density. Thereby, the cushion layer 413 can provide the user with the same tactile sensation even when the user presses the portion of the skin 11 corresponding to either the main body portion 413a or the block body 413b.

Note that the main body portion 413a is not limited to having a through hole, and may be a cylindrical recess with a bottom, for example. For example, when the top surface of the bottom portion forming the recess (surface on the Z-axis positive side) comes into contact with the bottom surface (surface on the Z-axis negative side) of the block body 413b, the block body 413b moves in the Z-axis negative direction. Movement may be restricted. Thereby, it is possible to suppress movement of the block body 413b in the Z-axis direction due to vibrations of the vehicle or the like. Note that in this case, at least the bottom portion of the main body portion 413a has optical transparency.

(Variation 5 of the embodiment)
In the above embodiment, an example has been described in which other members are not arranged in the spaces 13d of the cushion layer 13, but the invention is not limited to this, and other members are arranged in at least some of the spaces 13d among the plurality of spaces 13d. may have been done. The configuration of the cushion layer in which other members (for example, a light shielding sheet) are arranged in the space 13d will be described with reference to FIG. 14. FIG. 14 is a cross-sectional view showing a light shielding sheet 513 arranged in the space 13d of the cushion layer 13 according to this modification.

As shown in FIG. 14, the input device 1 further includes a light shielding sheet 513 in the space 13d of the cushion layer 13.

The light shielding sheet 513 is disposed between the adjacent first recesses 13a, and suppresses light passing through one of the adjacent first recesses 13a from entering the other first recess 13a. It is a thin sheet-like member provided to suppress leakage light. For example, the light shielding sheet 513 is inserted into the space 13d. The light transmittance of the light shielding sheet 513 is lower than the light transmittance of the cushion layer 13. The light-shielding sheet 513 has a light-shielding property, and may be black, for example. Further, the cross-sectional shape of the light shielding sheet 513 is rectangular, but is not limited to this.

The light-shielding sheet 513 is configured to provide a similar tactile sensation to the user when pressing the position of the skin 11 corresponding to the portion where the light-shielding sheet 513 is placed and the portion where the light-shielding sheet 513 is not placed. Further, for example, the thickness of the light shielding sheet 513 may be thinner than the thickness of the cushion layer 13. Further, for example, the light shielding sheet 513 may be made by molding silicone rubber.

(Variation 6 of the embodiment)
In the embodiments described above, an example has been described in which the cushion layer 13 does not include light-diffusing particles having a function of diffusing light, but the cushion layer 13 is not limited thereto, and may include light-diffusing particles. The structure of the cushion layer containing light-diffusing particles will be described with reference to FIG. 15. FIG. 15 is a cross-sectional view showing a cushion layer 613 according to this modification.

As shown in FIG. 15, the skin portion 10 has a cushion layer 613 instead of the cushion layer 13 of the embodiment.

The cushion layer 613 contains light diffusing particles 613a inside. The light diffusing particles 613a have a different refractive index from the material forming the cushion layer 613. In this embodiment, the light diffusing particles 613a have a refractive index different from that of silicone rubber. The light diffusing particles 613a are inorganic fine particles such as silica and glass beads, but may also be resin particles.

The light diffusing particles 613a are contained in each of the first recess 13a and the second recess 13b. The light diffusing particles 613a are uniformly dispersed and arranged inside the cushion layer 613, but the present invention is not limited thereto. Furthermore, any known method may be used to manufacture the cushion layer 613 containing the light diffusing particles 613a.

Note that the light-diffusing particles 613a are not limited to being contained in the cushion layer 613, and may be contained in the design sheet 12 (for example, the sheet portion 12a). When the sheet portion 12a is formed of silicone rubber having optical transparency, the light diffusing particles 613a have a different refractive index from the silicone rubber.

As described above, by containing the light diffusing particles 613a in at least one of the design sheet 12 and the cushion layer 613, the cushion layer 613 can be configured by arranging a plurality of first recesses 13a and second recesses 13b. Even if there is, it is possible to suppress the occurrence of brightness unevenness.

(Modification 7 of embodiment)
In the above embodiment, as shown in FIG. 5, an example has been described in which the cushion layer 13 is held only by the sensor film 31 in the portion of the through hole 32a of the frame 32, but the cushion layer 13 is not limited to this. A sensor film 31 and a light-transmitting protective layer 35 may be provided in this order on the surface of the layer 13 opposite to the surface on which the skin 11 is arranged. The configuration of the input device including the protective layer 35 will be described with reference to FIG. 16. FIG. 16 is a sectional view showing an input device according to this modification.

As shown in FIG. 16, in the input device according to this modification, a sensor film 31 and a protective layer 35 are arranged in this order between the cushion layer 13 and the frame 32 from the cushion layer 13 side. .

The frame 32 is disposed between the sensor film 31 and the light source 33, and has through holes 32a at positions corresponding to the designs formed on the design sheet 12.

The protective layer 35 relieves the stress applied to the sensor film 31 disposed in the through hole 32a due to the pressing force when the user performs a pressing operation. For example, in the configuration shown in FIG. 5, the cushion layer 13 is held only by the sensor film 31 at the through hole 32a of the frame 32. Therefore, each time the upper part (skin 11) of the through hole 32a corresponding to the design display portion is pressed with a finger, a pressing force is directly applied to the sensor film 31 via the compressed and deformed cushion layer 13. As a result, stress may be concentrated in the sensor film 31, particularly at the edge portions of the through holes 32a.

Therefore, in the input device according to this modification, a protective layer 35 is arranged between the sensor film 31 and the frame 32. As a result, the protective layer 35 receives stress particularly at the edge portion of the through hole 32a, so stress concentration on the sensor film 31 is alleviated, and high reliability is obtained.

The protective layer 35 is harder than the sensor film 31 in order to relieve stress concentration on the sensor film 31. The protective layer 35 is, for example, a light-transmissive resin plate (for example, a polycarbonate plate), a PET (Polyethlene Terephthalate) film, etc., but is not limited thereto. The protective layer 35 may be made of, for example, silicone rubber having optical transparency. Further, the protective layer 35 may be made of the same material as the sensor film 31 (for example, PET film). In this case, the protective layer 35 is thicker than the sensor film 31.

The protective layer 35 may contain therein light-diffusing particles (for example, light-diffusing particles 613a) as described in Modification 7 of the embodiment. The light-diffusing particles have a refractive index different from that of the resin or silicone rubber constituting the protective layer 35, and are, for example, inorganic fine particles such as silica or glass beads, or resin particles. Thereby, the light from the light source 33 is diffused in advance before reaching the cushion layer 13, so that uneven brightness caused by the cushion layer 13 can be suppressed, and the appearance of the design can be further improved.

Furthermore, the configuration in which light diffusing particles 613a are contained in at least one of the design sheet 12 and the cushion layer 613 described in Modification 6 of the embodiment, and the protective layer 35 containing light diffusing particles of this modification are combined. By combining them, uneven brightness caused by the cushion layer 13 can be further suppressed.

Moreover, the protective layer 35 is formed so as to cover each of the region of the frame 32 where the through hole 32a is formed and the region where the through hole 32a is not formed, in plan view. It can also be said that the protective layer 35 is formed across the first region 10a (see FIG. 1) and the second region 10b (see FIG. 1) in plan view. It can also be said that the protective layer 35 is formed across the switch portion and the non-switch portion in plan view.

Note that, as described in the above embodiment, a light guide may be provided in the through hole 32a to close the through hole 32a, or the frame 32 may be formed by two-color molding made of a light-transmitting resin and a light-blocking resin. In the case of a configuration in which the through hole 32a is not formed, stress concentration on the sensor film 31 due to the user's pressing operation hardly occurs, so the protective layer 35 does not need to be provided.

(Modification 8 of embodiment)
In the embodiment described above, the vibration device 40 is arranged on the negative Z-axis side of the frame portion 30. Thereby, the input device has a configuration that allows the user to easily sense vibrations in the Z-axis direction (thickness direction of the cushion layer 13). However, the configuration is not limited to this, and the vibration direction of the vibration device 40 may be within the XY-axis plane, that is, in the plane direction of the cushion layer 13. As a specific example of vibrating also in the plane direction, as shown in FIG. 5, the vibration device 40 that vibrates in the Z-axis direction may be attached to the frame portion 30 at an angle.

With such a configuration, the frame portion 30 vibrates not only in the Z-axis direction but also in the X-axis direction, the Y-axis direction, or both directions. Here, when the cushion layer 13 is compressively deformed by the user's pressing operation, at least a portion of the vibration in the Z-axis direction is absorbed by the cushion layer. However, by vibrating the vibration device 40 in the X-axis direction, the Y-axis direction, or both directions, vibrations in directions other than the Z-axis, that is, vibrations in the plane direction of the cushion layer 13 can be transmitted to the user's fingers. , vibrations absorbed by the cushion layer 13 can be suppressed.

In addition, although the configuration in which the vibration device 40 is mounted at an angle with respect to the frame portion 30 has been described in this modification, the input device is not limited to this configuration, and the input device can be configured to vibrate in the X-axis direction, the Y-axis direction, or both directions. By attaching the device 40 to the frame part 30, the configuration may be such that only the surface direction of the cushion layer 13 vibrates, or the vibration device 40 capable of vibrating in all directions of the X, Y, and Z axes may be attached to the frame part. 30 may be used.

Note that when the vibration device 40 vibrates in the planar direction, a gap may be provided between the frame portion 30 (for example, the frame 32) and the frame body 14 depending on the amount of vibration in the planar direction.

(Other embodiments)
Although the input device 1 according to one or more aspects has been described above based on the embodiments, the present disclosure is not limited to the embodiments. Unless it deviates from the spirit of the present disclosure, the present disclosure may include various modifications that can be thought of by those skilled in the art to the embodiments, and embodiments constructed by combining components of different embodiments. .

For example, in the above embodiments, an example has been described in which the skin 11, the decorative sheet 12, and the cushion layer 13 are laminated in this order in direct contact with each other, but the present invention is not limited thereto. Another plate-shaped layer may be provided between the skin 11 and the decorative sheet 12 and at least one of the decorative sheet 12 and the cushion layer 13. The plate-like layer is preferably a layer having cushioning properties.

Further, in the above embodiments and the like, the number of push detection units 100 included in the input device 1 is not particularly limited, and may be one or two or more.

Further, in the above embodiments, an example is described in which a design is displayed by light transmitted through the design sheet 12, but the input device 1 is not limited to this, and the input device 1 can display a design by light blocked by the design sheet 12. The configuration may be displayed.

Furthermore, in the embodiments described above, an example has been described in which the light source 33 has a plurality of light emitting elements 33b, but the light source 33 may be, for example, a single surface light source.

Furthermore, the height, thickness, etc. in the above embodiments may be any value among the average value, median value, mode value, maximum value, and minimum value of length.

Furthermore, the division of functional blocks in the block diagram is just an example; multiple functional blocks can be realized as one functional block, one functional block can be divided into multiple functional blocks, or some functions can be moved to other functional blocks. It's okay. Further, functions of a plurality of functional blocks having similar functions may be processed in parallel or in a time-sharing manner by a single piece of hardware or software.

Furthermore, in the above embodiments, each component (for example, a control unit) may be configured with dedicated hardware, or may be realized by executing a software program suitable for each component. Each component may be realized by a program execution unit such as a CPU or a processor reading and executing a software program recorded on a recording medium such as a hard disk or a semiconductor memory.

(Additional note)
The following technology is disclosed by the description of the above embodiments and the like.

(Technology 1)
a light-transparent epidermis;
a design part that has light transparency and is arranged on the front side or the back side of the epidermis;
a cushion layer having light transparency and disposed on the back side of the epidermis;
a light source disposed on the back side of the cushion layer,
The cushion layer has a plurality of concave portions that are convex in the lamination direction and have a concave back side of the convex shape in a cross-sectional view when cut along a plane parallel to the lamination direction of the skin and the design portion. death,
The plurality of recesses have a convex shape in a first direction in the lamination direction with respect to a reference line parallel to a first direction intersecting the lamination direction, and a back side of the convex shape in the first direction is a concave shape. a concave portion connected to the first concave portion and having a convex shape in a second direction opposite to the first direction in the lamination direction with respect to the reference line, and a back side of the convex shape in the second direction is concave; a second recessed portion,
The first recess and the second recess are arranged alternately along the first direction,
Display device.

(Technology 2)
The display device according to technique 1, wherein the first recesses and the second recesses arranged alternately are formed in a wavy shape in a cross-sectional view when cut along a plane parallel to the stacking direction.

(Technology 3)
The cushion layer has a plurality of first recesses and second recesses arranged along the first direction extending in a second direction intersecting the first direction in a plan view of the display device. The display device according to technique 1 or 2, which has one wave-like member.

(Technology 4)
The cushion layer is further formed such that the first recesses and the second recesses are arranged alternately along the second direction, and the cushion layer is further formed such that the first recesses and the second recesses are arranged alternately along the second direction, and The first recess and the second recess include a second wavy member that extends in a third direction intersecting the second direction in a plan view of the display device and is arranged to overlap with the first wavy member. 3. The display device according to 3.

(Technique 5)
The first direction and the second direction are orthogonal to each other in a plan view of the display device,
The second direction and the third direction are orthogonal to each other in a plan view of the display device,
The display device according to technique 4, wherein the first direction and the third direction are the same direction.

(Technology 6)
If the pitch between the adjacent first recesses or the adjacent second recesses in the first wavy member is p1, the lamination of the tops of the first recesses and the tops of the second recesses in the first wavy member The length in the direction is less than the p1,
If the pitch between the adjacent first recesses or the adjacent second recesses in the second wavy member is p2, the lamination of the tops of the first recesses and the tops of the second recesses in the second wavy member The display device according to technique 4, wherein the length in the direction is less than the p2.

(Technology 7)
The display device according to any one of Techniques 1 to 6, wherein the cushion layer has a plurality of the first recesses and a plurality of the second recesses, each of which is arranged two-dimensionally in a plan view of the display device.

(Technology 8)
In a cross-sectional view when the cushion layer is cut along a plane parallel to the stacking direction, the first recesses and the second recesses are arranged alternately along the first direction, and the display device further comprising the first recess and the second recess arranged alternately along a second direction intersecting the first direction in a plan view,
The first recess and the second recess arranged along the second direction are different from the first recess and the second recess along the first direction in the position of the reference line in the stacking direction. ,
The display device according to technique 7, wherein the first recess arranged along the first direction and the second recess arranged along the second direction are connected.

(Technology 9)
The second direction is a direction from the cushion layer toward the epidermis side,
The display device according to any one of Techniques 1 to 8, wherein the top of the second recess is flat.

(Technology 10)
The cushion layer has a first portion that overlaps a design formed in the design portion, and a second portion around the first portion, in a plan view of the display device,
The display device according to any one of Techniques 1 to 9, wherein the first portion has a higher light transmittance than the second portion.

(Technology 11)
The first part is transparent or colored to transmit light,
The display device according to technique 10, wherein the second portion has a light blocking property.

(Technology 12)
The display device according to any one of Techniques 1 to 11, wherein a light-shielding sheet is arranged between the adjacent first recesses.

(Technology 13)
The display device according to any one of Techniques 1 to 12, wherein the design portion is arranged to overlap with two or more of the first recesses and the second recesses when viewed from the stacking direction.

(Technology 14)
The display device according to any one of Techniques 1 to 13, wherein the cushion layer is formed of silicone rubber having light transparency.

(Technology 15)
The display device according to technique 14, wherein the cushion layer includes light diffusing particles having a different refractive index from the silicone rubber.

(Technology 16)
The display device according to any one of Techniques 1 to 13, wherein the design portion includes a silicone rubber having optical transparency and light diffusing particles having a different refractive index from the silicone rubber.

(Technology 17)
17. The display device according to any one of Techniques 1 to 16, wherein the design portion has a printed layer forming a design.

(Technology 18)
The display device according to any one of Techniques 1 to 16, wherein the design portion includes a design sheet forming a design.

(Technology 19)
The display device according to any one of Techniques 1 to 18, wherein the first recess or the second recess is square, hexagonal, or circular in plan view of the display device.

(Technology 20)
The display device according to any one of Techniques 1 to 19;
An input device comprising: a detection unit that is arranged on the back side of the cushion layer and detects an operation from a user.

(Technology 21)
The input device according to technique 20, wherein the cushion layer is compressively deformed by pressure on the epidermis.

(Technology 22)
The input device according to Technique 20 or 21, wherein the detection unit detects the operation from the user when the cushion layer is compressed and deformed and the epidermis is further pressed.

(Technology 23)
The detection unit has a light-transmissive sensor film that detects the operating position on a surface of the cushion layer opposite to the surface on which the skin is arranged,
The input device further includes:
a plate-shaped frame disposed between the sensor film and the light source and having a through hole at a position corresponding to a design formed in the design portion;
The input device according to any one of Techniques 20 to 22, further comprising a light-transmissive protective layer disposed between the sensor film and the frame.

(Technology 24)
The input device according to technique 23, wherein the protective layer includes light-diffusing particles.

(Technology 25)
further comprising a vibration device that transmits vibration to the cushion layer,
The input device according to any one of Techniques 20 to 24, wherein the vibration device vibrates at least in a plane direction of the cushion layer.

The present disclosure is useful for display devices and input devices installed in vehicles and the like.

1 Input device 10 Skin part 10a First region 10b Second region 11 Skin 12 Design sheet (design part)
12a Sheet part 12b Design layer 12b1 Transparent part (first part)
12b2 Light shielding part (second part)
13, 113, 213, 313, 413, 613 Cushion layer 13a, 113a1, 113b1 First recess 13a1, 13b1, 113a11, 113a22, 113b11, 113b22 Top 13b, 113a2, 113b2, 313b Second recess 13c, 13d Space 14 Frame 15, 34, 53, 54, 64 Screw 20, 413a Main body 21 Frame 22 Regulation part 23, 51, 61 Opening 30 Frame part 31 Sensor film (detection part)
31a Base material 31b Sensor electrode 31c Flexible substrate portion 32 Frame 32a Through hole 32b, 32c End portion 33 Light source 33a Substrate 33b Light emitting element 35 Protective layer 40 Vibration device 50 Leaf spring 52, 63 Screw hole 60 Chassis 62 Convex portion 70 Main board 80 Upper cover 90 Lower cover 100 Push-in detection section (detection section)
110 Control part 113a First wavy part 113b Second wavy part 213a First wavy member 213b Second wavy member 313b1 Plane 413b Block body 513 Light shielding sheet 613a Light diffusing particle A Height W Width

Claims (25)

a light-transparent epidermis;
a design part that has optical transparency and is arranged on the front side or the back side of the epidermis;
a cushion layer having light transparency and disposed on the back surface side of the epidermis;
a light source disposed on the back side of the cushion layer,
The cushion layer has a plurality of concave portions that are convex in the lamination direction and have a concave back side of the convex shape in a cross-sectional view when cut along a plane parallel to the lamination direction of the skin and the design portion. death,
The plurality of recesses have a convex shape in a first direction in the lamination direction with respect to a reference line parallel to a first direction intersecting the lamination direction, and a back side of the convex shape in the first direction is a concave shape. a concave portion connected to the first concave portion and having a convex shape in a second direction opposite to the first direction in the lamination direction with respect to the reference line, and a back side of the convex shape in the second direction is concave; a second recessed portion,
The first recess and the second recess are arranged alternately along the first direction,
Display device. The display device according to claim 1 , wherein the first recesses and the second recesses arranged alternately are formed in a wavy shape in a cross-sectional view taken along a plane parallel to the stacking direction. The cushion layer has a plurality of first recesses and second recesses arranged along the first direction extending in a second direction intersecting the first direction in a plan view of the display device. The display device according to claim 1 or 2, comprising one wave-like member. The cushion layer is further formed such that the first recesses and the second recesses are arranged alternately along the second direction, and the cushion layer is further formed such that the first recesses and the second recesses are arranged alternately along the second direction, and The first recess and the second recess include a second wavy member that extends in a third direction intersecting the second direction in a plan view of the display device and is arranged to overlap with the first wavy member. The display device according to item 3. The first direction and the second direction are orthogonal to each other in a plan view of the display device,
The second direction and the third direction are orthogonal to each other in a plan view of the display device,
The display device according to claim 4, wherein the first direction and the third direction are the same direction. If the pitch between the adjacent first recesses or the adjacent second recesses in the first wavy member is p1, the lamination of the tops of the first recesses and the tops of the second recesses in the first wavy member The length in the direction is less than the p1,
If the pitch between the adjacent first recesses or the adjacent second recesses in the second wavy member is p2, the lamination of the tops of the first recesses and the tops of the second recesses in the second wavy member The display device according to claim 4, wherein the length in the direction is less than the p2. The display device according to claim 1 , wherein the cushion layer includes a plurality of the first recesses and a plurality of the second recesses, each of which is two-dimensionally arranged in a plan view of the display device. In a cross-sectional view when the cushion layer is cut along a plane parallel to the stacking direction, the first recesses and the second recesses are arranged alternately along the first direction, and the display device further comprising the first recess and the second recess arranged alternately along a second direction intersecting the first direction in a plan view,
The first recess and the second recess arranged along the second direction are different from the first recess and the second recess along the first direction in the position of the reference line in the stacking direction. ,
The display device according to claim 7, wherein the first recess arranged along the first direction and the second recess arranged along the second direction are connected. The second direction is a direction from the cushion layer toward the epidermis side,
The display device according to claim 1 or 2, wherein the top of the second recess is a flat surface. The cushion layer has a first portion that overlaps a design formed in the design portion, and a second portion around the first portion, in a plan view of the display device,
The display device according to claim 1 , wherein the first portion has a higher light transmittance than the second portion. The first part is transparent or colored to transmit light,
The display device according to claim 10, wherein the second portion has light blocking properties. The display device according to claim 1 or 2, wherein a light-shielding sheet is arranged between the adjacent first recesses. The display device according to claim 1 or 2, wherein the design portion is arranged so as to overlap two or more of the first recesses and the second recesses when viewed from the stacking direction. The display device according to claim 1 or 2, wherein the cushion layer is formed of silicone rubber having light transmittance. The display device according to claim 14, wherein the cushion layer includes light diffusing particles having a different refractive index from the silicone rubber. The display device according to claim 1 , wherein the design portion includes a silicone rubber having optical transparency and light diffusing particles having a different refractive index from the silicone rubber. The display device according to claim 1 or 2, wherein the design portion includes a printed layer forming a design. The display device according to claim 1 or 2, wherein the design section includes a design sheet forming a design. The display device according to claim 1 , wherein the first recess or the second recess is square, hexagonal, or circular in plan view of the display device. A display device according to claim 1 or 2,
An input device comprising: a detection section that is arranged on the back side of the cushion layer and detects an operation from a user. The input device according to claim 20, wherein the cushion layer is compressed and deformed by pressing the outer skin. The input device according to claim 20, wherein the detection unit detects an operation from the user when the cushion layer is compressed and deformed and the epidermis is further pressed. The detection unit has a light-transmissive sensor film that detects the operating position on a surface of the cushion layer opposite to the surface on which the skin is arranged,
The input device further includes:
a plate-shaped frame disposed between the sensor film and the light source and having a through hole at a position corresponding to a design formed in the design portion;
The input device according to claim 20, further comprising a light-transmissive protective layer disposed between the sensor film and the frame. The input device according to claim 23, wherein the protective layer includes light-diffusing particles. further comprising a vibration device that transmits vibration to the cushion layer,
The input device according to claim 20, wherein the vibration device vibrates at least in a plane direction of the cushion layer.

Images