JP6732687B2 - Display device - Google Patents

Description

The present invention relates to a display device that presents a tactile sensation due to vibration.

In recent years, portable information devices such as smartphones and tablet personal computers, various consumer devices such as microwave ovens, televisions, and home appliances such as lighting fixtures, as well as automatic teller machines, vending machines, and vending machines. 2. Description of the Related Art In various industrial equipment such as, a touch panel that presents a tactile sensation to an operator is being mounted.

For example, in the conventional technique described in Patent Document 1, a tactile sensation providing unit that presents a tactile sensation by vibration is disposed on the back surface of the panel, which is the side opposite to the tactile sensation providing surface (operation surface) of the panel. Disclosed is a tactile sensation providing device including an atmospheric pressure control unit that controls the atmospheric pressure in a space on the side opposite to the tactile sensation providing surface of a tactile sensation providing unit. Ventilation holes are provided.

JP, 2014-6672, A

In the above-described tactile sensation providing device, it is possible to reduce the change in the atmospheric pressure of the space inside the tactile sensation providing device and efficiently vibrate the tactile sensation providing unit by means of the ventilation holes provided in the housing, but to reduce the flow path resistance of the ventilation holes. If the number of ventilation holes is increased or the number of ventilation holes is increased in order to reduce the number, dust may easily enter the housing, which may adversely affect the display unit. Also, in the case of ventilating with the vent hole, if the vent hole is blocked for some reason, the airtightness becomes high, and more power is required to vibrate with a desired amplitude, so the power consumption increases. May occur.

A display device according to the present invention includes a substrate having a display unit, a vibrating body arranged on the substrate, a support arranged opposite to the substrate with a gap, the substrate and the support. And an elastic supporting member that is elastically deformable with respect to the vibration of the vibrating body, and is disposed so as to surround the display unit across the substrate and the supporting body. And a deformable wall member, the wall member including a ventilable void portion formed of a mesh structure.

Further, the display device of the present invention is provided with a display panel having a display section, an operation panel provided so as to cover the display panel and having an operation surface on the side opposite to the side facing the display panel, and the operation panel. The vibrating body is disposed on the opposite side of the operation surface of the operation panel from the operation panel, and the support body is disposed between the operation panel and the support body. An elastic supporting member that is elastically deformable with respect to the operating panel; It is characterized in that it includes a permeable void portion formed of a mesh structure.

According to the display device of the present invention, by providing the air-permeable wall member, it is possible to suppress the pressure fluctuation due to the vibrating body in the partial space surrounded by the wall member, and thus suppress the reduction of the vibration efficiency due to the vibrating body. can do.

It is a top view showing an example of a display of this embodiment. It is sectional drawing which shows an example of the display device of this embodiment. It is an expanded sectional view explaining the flow of the air of the wall member vicinity.

FIG. 1 is a plan view showing an example of the display device of this embodiment. Further, FIG. 2 is a cross-sectional view showing an example of the display device of the present embodiment, and schematically shows a cross-section including the vibrating bodies 13a and 13b of the display device of FIG. In FIG. 2, the thickness direction of the display device is shown enlarged for the sake of explanation. A liquid crystal display device 1 which is an example of a display device has a liquid crystal display panel 20 which is a display panel provided behind a transparent touch panel 10 which is an operation panel, and a backlight device which is a support on the back surface of the liquid crystal display panel 20. 30 is provided, and the touch panel 10, the liquid crystal display panel 20, and the backlight device 30 are housed in a housing 40.

In the display device of the present invention shown in FIGS. 1 and 2, the substrate having the display unit is, for example, a contact detection unit on one main surface (back surface) side of the transparent protective plate 11 made of a glass substrate, a plastic substrate, or the like. 12 and the liquid crystal display panel 20 are laminated and have a composite structure.

Examples of the display panel including the display unit include the liquid crystal display panel 20 including the liquid crystal display unit as the display unit. However, the display panel is not limited to the liquid crystal display panel 20, and an organic EL (Electro Luminescence) display panel and an inorganic EL display are provided. It may be a self-luminous display panel such as a panel or a light emitting diode (LED) display panel.

The vibrating bodies 13a and 13b are arranged at the peripheral portion (side portion) of the back surface of the transparent protective plate 11 that constitutes the substrate, and are located outside the liquid crystal display panel 20 in plan view. The vibrating bodies 13a and 13b are arranged at positions facing each other. In this case, vibrations due to the vibrating bodies 13a and 13b are likely to occur uniformly on the entire substrate. The vibrating bodies 13 a and 13 b may be arranged on the other main surface (front surface) side of the transparent protective plate 11.

The support body is a support substrate including the light guide plate 31 of the backlight device 30. The light guide plate 31 has a projecting portion (flange) of the frame 32 at the peripheral edge of the surface (light irradiation surface) facing the non-display surface 20b of the liquid crystal display panel 20, and the elastic supporting member is provided at the projecting portion. The transparent protective plate 11 is supported via 50a, 50b, 50c and 50d.

The wall member 60 is arranged so as to surround the display unit over the substrate and the support, and is deformable with respect to the vibration of the vibrating bodies 13a and 13b. The wall member 60 is composed of a mesh structure. It has an air-permeable space. Specifically, the wall member 60 has a void portion formed of a mesh-like structure such as a non-woven fabric, a cotton-like body, an air filter, a HEPA (High Efficiency Particulate Air Filter) filter, etc. The roughness of the eyes can be adjusted. The coarseness of the mesh can be adjusted by, for example, including the fiber and the adhesive, and adjusting the degree of combination such as the content ratio thereof. Thereby, the wall member 60 having suitable air permeability can be obtained. The wall member 60 may or may not have a gradient in the density of the voids (eyes) in the ventilation direction.

In the air-permeable wall member 60 of the present invention, the pressure loss of the air passing through the wall member 60 when the substrate vibrates (for example, the pressure loss when the passing wind speed is 20 cm/sec) is 0.1 Pascal to 100 Pascal. It is preferably (Pa). If it is less than 0.1 Pa, dust, dust and the like tend to easily pass through the wall member 60. When it exceeds 100 Pa, the air permeability of the wall member 60 is lowered, so that the resistance of the wall member 60 to the air passing through the wall member 60 tends to increase. As a result, the wall member 60 hinders the vibration of the substrate and the vibration efficiency is likely to decrease. The pressure loss is more preferably 0.1 Pa to 50 Pa, and even more preferably the pressure loss is 0.1 Pa to 40 Pa. The passing wind speed of the air passing through the wall member 60 when the substrate vibrates is about 1 cm/sec to 100 cm/sec, and the pressure loss may be 0.1 Pa to 100 Pa within the passing wind velocity range.

The pressure loss can be measured as follows. When the air passes through the wall member 60, the wall member 60 becomes a resistance against the air, and a difference occurs between the pressure on the inlet side of the wall member 60 and the pressure on the outlet side of the wall member 60. This pressure difference can be measured by a manometer (U-tube manometer, tilt manometer, etc.) connected to the measuring duct. The pressure on the inlet side of the wall member 60 (upstream static pressure) and the pressure on the outlet side of the wall member 60 (downstream static pressure) when the wall member 60 is used at a predetermined wind speed (for example, 20 cm/sec). The difference is the pressure loss (unit: Pa).

The touch detection unit 12 included in the touch panel 10 is arranged in parallel to the light guide plate 31 of the backlight device 30, which is a support substrate, with a gap in the thickness direction of the light guide plate 31. In the touch panel 10, the operation surface 11 a is the surface of the transparent protection plate 11 opposite to the light guide plate 31 side (the operator side surface, the viewer side surface), and the contact detection unit 12 is the transparent protection plate 11. Is disposed on the back surface 11b opposite to the operation surface 11a side.

The touch panel 10 is configured by disposing the contact detection unit 12 on the back surface 11b of the transparent protection plate 11. The transparent protective plate 11 has, for example, a rectangular shape in a plan view, and can be made of a glass plate, a plastic plate, or the like. The shape of the transparent protection plate 11 in plan view is not limited to a rectangular shape, but may be a polygonal shape such as a triangular shape or a pentagonal shape, a trapezoidal shape, or a shape in which the corners are curved in these shapes. May have a generally curved shape such as a circular shape or an elliptical shape. The transparent protective plate 11 has an operation surface 11a that is operated by an operator touching it with a finger F, a touch pen, or the like. There is a gap between the edge of the transparent protective plate 11 and the housing 40, and air can flow therethrough.

A contact detection unit 12 is provided on the back surface 11b of the transparent protective plate 11 opposite to the operation surface 11a. The contact detection unit 12 has a thin film shape, and has, for example, a rectangular shape whose planar view shape is smaller than that of the transparent protection plate 11. The planar view shape of the contact detection unit 12 may be similar to the various planar view shapes of the transparent protective plate 11 described above. The contact detection unit 12 can detect the position of the finger F, the touch pen, or the like touching the operation surface 11a. As a detection method, a capacitance method, a resistance film method, or the like can be used. In the present embodiment, the contact detection unit 12 is arranged between the transparent protective plate 11 and the liquid crystal display panel 20, but the contact detection unit 12 may be built in the liquid crystal display panel 20. Alternatively, it may be provided outside the liquid crystal display device.

In the display device of the present invention, the contact detection unit 12 does not necessarily have to be provided, and may be omitted. For example, if the vibrating bodies 13a and 13b themselves made of a piezoelectric body or the like detect the displacement caused by the contact of the finger F or the touch pen, the contact detection unit 12 may be omitted.

On the back surface 11b of the transparent protective plate 11, a plurality of vibrating bodies, vibrating bodies 13a and 13b (when collectively referred to, suffixes a and b are omitted and are referred to as "vibrating body 13") are provided. For example, the vibrating bodies 13a and 13b are respectively provided along two opposing sides of the rectangular operation surface 11a of the transparent protective plate 11. Further, the vibrating bodies 13a and 13b are arranged at positions symmetrical with respect to the center P of the operation surface 11a of the rectangular transparent protection plate 11 in a plan view. The vibrating bodies 13a and 13b may be arranged so as to be in direct contact with the transparent protective plate 11 to directly transmit the vibrations to the transparent protective plate 11, but they may be arranged on the transparent protective plate 11 with other members interposed. Alternatively, the vibration may be indirectly transmitted. Further, when the operator touches the operation surface 11a with the finger F, the touch pen, or the like, the contact detection unit 12 detects the contact position, and the vibrating body 13 vibrates the operation surface 11a based on the detection information, and the finger F or the touch pen is used. Vibration can be transmitted to the operator.

The vibrating body 13 is made of a piezoelectric body such as a ceramic piezoelectric body or a polymer piezoelectric body, an eccentric motor, a linear vibrator, or a shape memory alloy. Materials for the ceramic piezoelectric body include barium titanate (BaTiO ₃ ), lead titanate (PbTiO ₃ ), lead zirconate titanate (Pb[Zr _x Ti _1-x ]O ₃ 0<x<1 mixed crystal: PZT. ), potassium niobate (KNbO ₃ ), lithium niobate (LiNbO ₃ ), lithium tantalate (LiTaO ₃ ), sodium tungstate (Na _x WO ₃ ), zinc oxide (ZnO, Zn ₂ O ₃ ), Ba ₂ NaNb. ₅ O ₅ , Pb ₂ KNb ₅ O ₁₅ , lithium tetraborate (Li ₂ B ₄ O ₇ ), sodium potassium niobate ((K,Na)NbO ₃ ), bismuth sodium titanate (Na _0.5 Bi _0.5). TiO ₃ ) etc. can be adopted. Polyvinylidene fluoride (1,1-2 fluoroethane polymer: PVDF) or the like can be used as the material of the polymer piezoelectric material.

The frequency of the vibration generated in the vibrating body 13 is about 30 Hz to 300 Hz, and the tactile vibration that gives a good tactile sensation with a human finger is preferably about 150 Hz to 250 Hz. The amplitude of vibration is about 30 μm to 1000 μm, and about 50 μm to 150 μm is preferable as tactile vibration that gives a good tactile sensation with a human finger. The external shape of the vibrating body 13 can be a columnar body such as a rectangular parallelepiped, a cube, a plate, and a column. The vibrating body 13 may be directly attached to the transparent protective plate 11 or may be indirectly attached via a vibration transmitting member such as metal or resin. Further, if the touch panel 10 can be vibrated, it may be attached to the side surface of the transparent protective plate 11, for example.

A liquid crystal display panel 20, which is a display panel, is arranged on the side of the touch panel 10 opposite to the operation surface 11a side. The liquid crystal display panel 20 has, for example, a rectangular shape that is smaller than the touch panel 10 in a plan view, and the touch panel 10 is provided so as to cover the liquid crystal display panel 20. The planar view shape of the liquid crystal display panel 20 may be similar to the various planar view shapes of the transparent protective plate 11 described above. The liquid crystal display panel 20 has a display surface 20a and a non-display surface 20b. The liquid crystal display panel 20 includes a display unit (liquid crystal display unit) 20c at the center, and the contact detection unit 12 is positioned so as to cover at least the display surface 20a corresponding to the display unit 20c. In addition, in the present embodiment, the liquid crystal display panel 20 is in contact with the back surface of the touch panel 10, but the liquid crystal display panel 20 may be arranged apart from the touch panel 10.

A backlight device 30 which is a support is provided so as to face the opposite display surface 20b of the liquid crystal display panel 20 with a gap. The backlight device 30 includes a light guide plate 31, a frame 32 arranged around the periphery of the light guide plate 31, and a conductor plate 33 on which the light guide plate 31 is placed and which also functions as a ground conductor. The backlight device 30 is configured to emit light from a light source including a built-in LED or the like toward the liquid crystal display panel 20 via the light guide plate 31. The frame 32 and the conductor plate 33 are made of metal such as aluminum.

In order for the liquid crystal display panel 20 and the backlight device 30 not to interfere with the vibration of the vibrating body 13, the space (height) between the liquid crystal display panel 20 and the backlight device 30 should be about 1 mm to 5 mm. It is preferable that the thickness is about 1 mm to 3 mm in terms of thinning.

The housing 40 has, for example, a rectangular shape in a plan view, and includes a bottom surface 40a at a central portion and a frame portion 40b that is a peripheral portion of the bottom surface 40a. The backlight device 30, the liquid crystal display panel 20, and the touch panel 10 are arranged in this order on the bottom surface 40a so as to overlap each other. The backlight device 30 is placed and fixed on the bottom surface 40 a of the housing 40. The peripheral frame portion 40b of the bottom surface 40a protects the side surfaces of the backlight device 30, the liquid crystal display panel 20, and the touch panel 10. As the material of the housing 40, for example, plastic or metal can be used.

An elastic support member is provided on the back surface 11b of the transparent protection plate 11 of the touch panel 10. In the present embodiment, elastic support members 50a, 50b, 50c, 50d are arranged at the four corners of the rectangular transparent protective plate 11 (subscripts a, b, c, d are omitted when collectively referred to. And referred to as "elastic support member 50"). As the elastic support member 50, it is possible to use a member made of a material that is difficult to damp the vibration of the operation panel by being displaced following the vibration of the vibrating body 13 made of rubber such as urethane rubber or silicone rubber, resin, or the like. Alternatively, a spring coil or a spring member such as a leaf spring may be used.

These elastic support members 50 are arranged between the frame body 32 of the backlight device 30 which is a support body and the transparent protection plate 11 which is an operation panel. The elastic support member 50 supports the transparent protection plate 11. The elastic support member 50 has one end in contact with the frame 32 and the other end in contact with the back surface 11b of the transparent protective plate 11. The elastic support member 50 is fixed and held to the frame body 32 and the transparent protective plate 11 by an adhesive or the like so that the arranged position does not move. When the operation panel and the display panel are integrally formed, a structure in which one end of the elastic support member 50 is fixed to the non-display surface of the display panel and the other end is fixed to the support is also possible.

When the liquid crystal display panel 20 is used as the display panel, the backlight device 30 can be used as the support, but for example, a self-luminous type such as an organic EL (Electro Luminescence) display panel or a light emitting diode (LED) display panel. When a display panel such as a panel that does not require a backlight device including a light guide plate is used, the housing 40 may be used as a support.

A wall member 60 is provided between the back surface 11b of the transparent protective plate 11 and the frame body 32 of the backlight device 30. The wall member 60 is arranged so as to surround the liquid crystal display panel 20 as a display unit. That is, the wall member 60 is arranged so as to surround the display unit across the operation panel and the support. The wall member 60 divides the space inside the wall member 60 including the display portion and the space outside the wall member 60. The wall member 60 includes a large number of voids, and the voids allow the wall member 60 to have a plurality of voids. The space inside 60 and the space outside the wall member 60 communicate with each other. The wall member 60 is composed of a member having a large number of continuous pores, and includes, for example, an ultra high molecular weight polyethylene porous film (manufactured by Nitto Denko Corporation, product name "Sunmap"), the above nonwoven fabric, a cotton-like material, and an air. It can be formed using a deformable member such as a filter or a HEPA filter. As a result, the space inside the wall member 60 and the space outside the wall member 60 communicate and can be ventilated by the voids such as pores. The ultra-high-molecular-weight polyethylene porous film is produced, for example, in a predetermined shape and size by producing a sintered porous compact of ultra-high-molecular-weight polyethylene powder and cutting this. In addition, when the pressure loss of the wall member 60 made of an ultra-high molecular weight polyethylene porous film (manufactured by Nitto Denko Corporation, product name "Sunmap") was measured, the thickness of the wall member 60 was 0.32 mm and the passing wind speed was 20 cm. In the case of /sec, it was 40 Pa.

FIG. 3 is an enlarged cross-sectional view illustrating the flow of air near the wall member 60. A space between the liquid crystal display panel 20 and the backlight device 30 often has a highly airtight structure so that dust does not enter the space between the liquid crystal display panel 20 and the backlight device 30. However, when a display device that presents a tactile sensation is configured by attaching the vibrating body 13 to such a display device, the vibration of the vibrating body 13 causes the air pressure in a highly airtight space between the liquid crystal display panel 20 and the backlight device 30. The pressure fluctuation of becomes large. Further, the pressure fluctuation of the atmospheric pressure in the space between the liquid crystal display panel 20 and the backlight device 30 may be transmitted to a portion other than the operation panel such as the casing 40 where the tactile sensation should be presented, and the usability such as the tactile sensation may be impaired. is there. Further, the vibration is diffused and attenuated, and it becomes difficult to efficiently vibrate the display device.

Therefore, as the wall member 60, a member that is deformable with respect to the vibration of the vibrating body 13 and has a void is used. Since the wall member 60 deforms following the vibrating body 13, the vibration of the vibrating body 13 is less likely to be transmitted to the housing 40 via the wall member 60. Therefore, the vibration of the vibrating body 13 does not diffuse to the portion such as the housing 40, and the touch panel 10 can be efficiently vibrated.

Further, the vibration of the transparent protective plate 11 causes a minute volume change in the space S inside the wall member 60. However, when the space S is highly airtight, the pressure variation of the atmospheric pressure in the space S becomes large. The vibration is easily transmitted to the housing 40, and the vibration energy is easily diffused and attenuated due to a pressure loss or the like. Therefore, by providing the wall member 60 with a void, the space S and the space outside the wall member 60 communicate with each other through the void. As a result, air corresponding to the volume variation of the space S flows through the wall member 60, and the pressure variation of the atmospheric pressure of the space S is suppressed. In this way, the pressure fluctuation of the atmospheric pressure in the space inside the wall member 60 due to the vibration of the vibrating body 13 can be alleviated, and the damping of the vibration of the transparent protective plate 11 constituting the operation panel can be suppressed, so the transparent protective plate. 11 can be vibrated efficiently. Therefore, it is possible to suppress an increase in the electric power that drives the vibrating body 13.

Further, the wall member 60 does not need to support the touch panel 10 and the liquid crystal display panel 20 unlike the elastic support member 50, and thus does not need the rigidity of the elastic support member 50 and the space S inside the wall member 60. The thickness of the wall may be thin as long as dust can be prevented from entering, and it is preferable that the rigidity is lower than that of the elastic support member 50 because the pressure fluctuation of the atmospheric pressure in the space S inside the wall member 60 becomes smaller. For example, the volume occupancy rate of the void portion is 40% or more and less than 100%, which is the ratio of the volume of the void portion of the wall member 60 where the void portion exists in the portion forming the void portion of the wall member 60. It is desirable to do. That is, it is desirable that the proportion of the resin or fiber forming the wall of the void is 60% or less of the volume of the portion where the void is present. When the volume occupancy rate of the voids is less than 40%, the air permeability of the wall member 60 deteriorates, and the vibration efficiency of the vibrating body 13 tends to decrease. The volume occupancy of the voids is more preferably 80% or more and less than 100%, and even more preferably 90% or more and less than 100%.

If the air permeability between the space S inside the wall member 60 and the space outside the wall member 60 is sufficiently ensured, the void portion of the wall member 60 will be configured as a void portion only in a part of the wall member 60. It is also possible to provide a portion to be formed and to form the other portion with a member having no void. Further, by forming the entire wall member 60 with a material having a void, it is possible to improve the air permeability between the space inside the wall member 60 and the space outside the wall member 60. As a result, the pressure fluctuation of the atmospheric pressure of the space S inside the wall member 60 is reduced, so that the damping of the vibration of the transparent protection plate 11 forming the operation panel is further suppressed, and the transparent protection plate 11 is vibrated more efficiently. be able to.

In the wall member 60, the voids are composed of a mesh structure, and the mesh structure has a large number of mesh-like voids due to the interlocking of linear bodies and fibrous bodies, or a linear structure connected as a whole. It has a large number of regular mesh-like voids formed by a body, a fibrous body, and a wall-like body, and is, for example, a non-woven fabric, a cotton-like body, a woven fabric, a fish net, an insect collecting net, a honeycomb structure or the like. The wall member 60 may include such a mesh structure in at least a part thereof. The mesh-like structure in the display device of the present invention has a dense structure, which is a flexible continuous structure made of resin such as foamed polyurethane rubber, as a matrix, and has a porous structure in which a large number of pores are formed in the matrix. Does not include the body. Even if the wall member 60 having such a flexible dense body as a matrix has air permeability, it is possible to suppress the pressure fluctuation of the atmospheric pressure of the space S inside the wall member 60 due to the vibration of the transparent protective plate 11. It is difficult to obtain sufficient breathability, and the pressure energy easily diffuses and attenuates the vibration energy. As a specific example of the mesh structure, there is an air purifying filter (manufactured by 3M Japan, product name “filterlet”). The mesh structure is preferably an electrostatic charging body such as an electrostatic charging filter, in which case the dust collection effect is improved. The mesh structure has, for example, a pressure loss of 0.1 Pa to 100 Pa (value at a passing wind speed of 20 cm/sec) and a thickness of about 0.5 mm to 5 mm. By using the wall member 60 including the mesh structure, it is possible to reduce the flow path resistance of the void portion of the wall member 60, so that the damping of the vibration of the transparent protective plate 11 that constitutes the operation panel is further suppressed, The transparent protective plate 11 can be vibrated more efficiently. In addition, when the pressure loss of two kinds of wall members 60 (air density differing) made of an air cleaning filter (manufactured by 3M Japan, product name “filterlet”) was measured, the thickness of the wall member 60 was 2 mm and passed. When the wind speed was 20 cm/sec, these pressure losses were 5 Pa to 7 Pa.

Moreover, it is preferable that the void of the wall member 60 does not have a structure in which the opening facing the space inside the wall member 60 and the opening facing the space outside the wall member 60 are connected in a straight tube shape. That is, in at least one of the opening of the void facing the space inside the wall member 60 and the opening of the void facing the space outside the wall member 60, when the inside of the wall member 60 is viewed from the opening of the void, The wall member 60 preferably exists so as to block at least a part of the opening. The fact that the substance of the wall member 60 blocks at least a part of the opening includes that the void in the wall member 60 is narrower than the opening. With such a structure, the substance of the wall member 60 that exists so as to block at least a part of the opening easily traps dust and the like. The sizes of the openings facing the space inside the wall member 60 and the openings facing the space outside the wall member 60, which are formed by the voids of the wall member 60, are, for example, the average opening in a unit area (1 cm ² ). The diameter is about 10 μm to 300 μm, but it is not particularly limited to this range.

For example, when the vibration amplitude of the transparent protective plate 11 generated by the vibrating body 13 is about 150 μm to 300 μm, which is large as tactile vibration (vibration energy is large), it becomes dust particles with a particle size of about 0.3 μm. On the other hand, a HEPA filter having a particle collection rate of 99.97% or more and an initial pressure loss of 245 Pa or less (specified in JIS Z 8122) may be used as the wall member 60. The HEPA filter is a kind of air filter used to remove dust, dirt and the like from the air to obtain clean air, and is used as a filter for air purifiers and clean rooms.

In the display device of the present invention, the liquid crystal display panel 20 is arranged in the space S inside the wall member 60, and the wall member 60 functions as a protective member for the liquid crystal display panel 20 and may also function as a dustproof member. .. Further, it is preferable that the elastic support member 50 and the vibrating body 13 are arranged in the space S inside the wall member 60, and the wall member 60 functions as a protective member for them and also as a dustproof member. .. The elastic support member 50 and the vibrating body 13 do not necessarily have to be arranged in the space S inside the wall member 60, and may be arranged outside the wall member 60.

Although the present invention has been described in detail above, the present invention is not limited to the above-described embodiments, and various modifications and improvements can be made without departing from the scope of the present invention.

DESCRIPTION OF SYMBOLS 1 Liquid crystal display device 10 Touch panel 11 Transparent protective plate 11a Operation surface 11b Rear surface 12 Contact detection part 13, 13a, 13b Vibrating body 20 Liquid crystal display panel 20a Display surface 20b Anti-display surface 20c Display part 30 Backlight device 31 Light guide plate 32 Frame body 33 conductor plate 40 housing 40a bottom surface 40b frame portion 50, 50a, 50b, 50c, 50d elastic support member 60 wall member

Claims (6)

A substrate having a display portion,
A vibrator disposed on the substrate;
A support body arranged to face the substrate with a gap,
An elastic support member disposed between the substrate and the support, and elastically deformable with respect to the vibration of the vibrating body,
A wall member that is disposed so as to surround the display unit over the substrate and the support, and that is deformable with respect to the vibration of the vibrating body,
The display device, wherein the wall member includes a permeable void portion formed of a mesh structure. The display device according to claim 1, wherein the volume occupancy of the void portion of the wall member is 40% or more and less than 100%. The display device according to claim 1 or 2, wherein a pressure loss of air passing through the wall member when the substrate vibrates is 0.1 Pascal to 100 Pascal. The display device according to claim 1, wherein the display unit is a liquid crystal display unit. The display device according to claim 4, wherein the support includes a backlight device. A display panel having a display section;
An operation panel which is provided so as to cover the display panel and has an operation surface on the side opposite to the side facing the display panel,
A vibrator disposed on the operation panel,
On a side opposite to the operation surface of the operation panel, a support body which is arranged to face the operation panel with a gap,
An elastic support member that is disposed between the operation panel and the support body and is elastically deformable with respect to the vibration of the vibrating body,
A wall member that is disposed so as to surround the display unit over the operation panel and the support, and that is deformable with respect to the vibration of the vibrating body,
The display device, wherein the wall member includes a permeable void portion formed of a mesh structure.

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