KR20200083208A - Vibration generation device, display apparatus and vehicle comprising the same - Google Patents

Abstract

The present specification relates to a vibration generation device disposed on a front surface of a display device to provide vibration acceleration and having a light control function, and the display device and a vehicle including the same. The vibration generation device can comprise: a piezoelectric ceramic part arranged at a regular interval; a piezoelectric material layer disposed between the piezoelectric ceramic part; and an electrode part providing an electric field to at least one of the piezoelectric ceramic part and the piezoelectric material layer.

Description

Vibration generator, display device and vehicle including the same{VIBRATION GENERATION DEVICE, DISPLAY APPARATUS AND VEHICLE COMPRISING THE SAME}

The present specification relates to a vibration generating device, a display device including the same, and a vehicle including the same. More specifically, it relates to a vibration generating device having a piezoelectric vibration characteristic and light transmission characteristics, a display device including the same, and a vehicle.

The display device is mounted on an electronic product or a home appliance such as a television, monitor, laptop computer, smart phone, tablet computer, electronic pad, wearable device, watch phone, portable information device, navigation, or vehicle control display device to display images. It can be used as a screen.

The display device displays a display panel representing an image, and outputs sound related to the image.

It may include a sound device for. However, since the sound device is disposed on the rear surface of the display panel, the sound quality deteriorates due to the interference between the sound reflected from surrounding structures such as a wall or the ground, because the sound output from the sound device proceeds to the rear or the bottom of the display panel. There is a problem that the immersion of viewers or viewers decreases.

In a display device such as a portable information device or a vehicle control display device, a haptic characteristic may be applied to vibrate a part or all of a screen of a display panel by a user's manipulation such as a touch input to inform the user of manipulation.

In order to provide haptic characteristics of a display device, a piezoelectric actuator using a piezoelectric material that generates mechanical energy such as vibration in response to an electrical signal may be used, and a method of applying the piezoelectric actuator to the display device is required. In addition, there is a need to control the path of light emitted to the display device to improve the visibility of the display device.

However, since the sound device is disposed on the rear surface of the display panel, there is a problem in that it is difficult to output a vibration acceleration having a desired haptic property or vibration property by a structure constituting the display device.

The present specification is for solving the above-mentioned problems, and the problem to be solved according to the embodiment of the present specification is disposed on the front surface of the display device to provide vibration acceleration, and a vibration generating device having a light control function. It is to provide a display device including the same.

The problem to be solved according to the embodiment of the present specification is to arrange a vibration generating device including a transparent piezoelectric material, an opaque piezoelectric ceramic material, and an electrode structure on the front surface of the display device, thereby providing a haptic (for example, vibration) function of the display device. And a display device capable of providing a light control function.

The problem to be solved according to the embodiment of the present specification is a plurality of piezoelectric ceramics spaced apart while having a constant pitch (P) and extending in the first direction while having a first width (W) and a first thickness (T) Includes a portion, an electrode portion including a first electrode provided on a first surface of the piezoelectric ceramic portion, a second electrode provided on a second surface of the piezoelectric ceramic portion, and a piezoelectric material layer disposed between the plurality of piezoelectric ceramic portions It is to provide a vibration generating device and a display device and a vehicle including the same.

The problem to be solved according to the embodiment of the present specification is a piezoelectric ceramic portion disposed in a grid with a certain width, a piezoelectric material layer disposed in an inner space between the piezoelectric ceramic portions, a piezoelectric ceramic portion, and a piezoelectric material layer. It is to provide a vibration generating device including an electrode part including a first electrode and a second electrode disposed on an upper front surface and a lower front surface, and a display device and a vehicle including the same.

The problem to be solved according to the embodiment of the present specification is a liquid crystal display device including a vibration generating device, wherein the vibration generating device is disposed between the backlight unit and the liquid crystal display panel included in the liquid crystal display device, or on the top of the liquid crystal display panel. It is to provide a liquid crystal display device disposed.

An object to be solved according to an embodiment of the present disclosure is to provide an organic light emitting display device in which a vibration generating device is disposed on the front or rear of the organic light emitting display panel.

An object to be solved according to an embodiment of the present disclosure is to provide a display device having improved acoustic performance and sound pressure characteristics, and a vehicle including the same.

When viewing an image from the front of the display panel, the direction of the sound may be in front of the display panel, and various experiments have been conducted to improve the sound quality. After several experiments, a display device having a new structure capable of generating sound that can proceed in front of the display panel, improving sound quality, and outputting a desired vibration was invented.

A problem according to an embodiment of the present disclosure is to provide a display device capable of outputting sound to the front of the display panel and a vehicle including the same.

The problem according to the embodiments of the present disclosure is to provide a vibration generating device, a display device and a vehicle including the same, which improve sound quality and increase the immersion of a viewer or a listener.

The solving problems according to the embodiments of the present specification are not limited to the above-mentioned problems, and other problems not mentioned will be clearly understood by those skilled in the art from the following description.

The vibration generating apparatus according to the embodiment of the present specification includes a piezoceramic part disposed at regular intervals, a piezoelectric material layer disposed between the piezoelectric ceramic parts, an electrode part providing an electric field to at least one of the piezoceramic part and the piezoelectric material layer. Can be configured.

The display device according to the exemplary embodiment of the present specification includes a liquid crystal display panel including a thin film transistor substrate, a backlight providing a backlight to the liquid crystal display panel, and a backlight and a liquid crystal display panel, between an upper surface of the liquid crystal display panel and a lower surface of the liquid crystal display panel. A vibration generating device including at least one piezoelectric ceramic portion disposed at regular intervals, a piezoelectric material layer disposed between piezoelectric ceramic portions, and an electrode portion providing an electric field to at least one of the piezoelectric ceramic portion and the piezoelectric material layer. It can contain.

The display device according to the exemplary embodiment of the present specification includes an organic light emitting display panel including a thin film transistor substrate, a piezoelectric ceramic portion disposed at regular intervals, a piezoelectric material layer disposed between the piezoelectric ceramic portions, and It may include a vibration generating device including an electrode portion for providing an electric field to one or more of the piezoelectric ceramic portion and the piezoelectric material layer.

The display device according to the exemplary embodiment of the present specification includes a display panel for displaying an image, and a vibration generating device disposed in the display panel, wherein the vibration generating device includes a plurality of first portions and a plurality of first portions having piezoelectric characteristics. It may include a plurality of second portions disposed between, and at least one electrode disposed on the plurality of first portions and the plurality of second portions.

A vehicle according to an embodiment of the present disclosure includes a first area facing the driver's seat, a second area facing the passenger seat, and a third area between the first area and the second area, and the first area of the desi board. Instrument panel module with one display, a second display disposed in a third area of the desi board, a third display disposed in a second area of the desi board, a fourth display disposed in the rear of the driver's seat, and arranged in the rear of the passenger seat An infotainment module having at least one of a fifth display, wherein any one of the first to fifth displays includes a plurality of first portions having piezoelectric characteristics, a plurality of second portions disposed between the plurality of first portions; And a display device having a vibration generating device including electrodes disposed on one of the plurality of first portions and the plurality of second portions.

Specific details of other embodiments are included in the detailed description and drawings.

According to an embodiment of the present specification, a vibration generating device including a layer of a piezoelectric material is disposed on the inner surface or the front surface of the display device to provide vibration acceleration through the surface of the display device, and to control the path of light emitted from the display device. It can perform the light control function.

According to the exemplary embodiment of the present specification, a haptic (for example, vibration) function and a light control function of the display device are provided by arranging a vibration generating device including a transparent piezoelectric material, an opaque piezoelectric ceramic material, and an electrode structure on the display device. A display device capable of being provided can be provided.

According to the embodiment of the present specification, since a vibration generating device having a haptic function and a light control function is constituted, the path of light emitted from the display device is controlled to minimize light reflection from a reflector adjacent to the display device, thereby improving visibility of the display device. Can be improved.

According to the embodiment of the present specification, since sound can be output to the front of the display panel and sound with improved sound quality, sound performance, and sound pressure characteristics can be output, it is possible to improve the immersion of a viewer or a listener.

The effects of the present specification are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the following description.

The subject matter to be solved above, the problem solving means, and the contents of the invention described in the effects do not specify the essential features of the claims, so the scope of the claims is not limited by the contents of the invention.

1A and 1B are views illustrating a display device according to an exemplary embodiment of the present specification.
2 is a diagram illustrating an example in which a display device according to an exemplary embodiment of the present disclosure is applied to a vehicle.
3 is a plan view of a vibration generating device according to an embodiment of the present specification.
4 is a cross-sectional view of line I-I' shown in FIG. 3.
5 is a view showing an optical path control function of the vibration generating device according to the embodiment of the present specification.
6 is a diagram illustrating a display device including a vibration generating device according to an embodiment of the present specification.
7 is a view illustrating a display device including a vibration generating device according to another embodiment of the present specification.
8 is a view showing a vibration generating device according to another embodiment of the present specification.
9 is a cross-sectional view taken along line II-II' shown in FIG. 8.
10 is a view showing a vibration generating device according to another embodiment of the present specification.
11A and 11B are diagrams for explaining the piezoelectric effect of the vibration generating device according to the embodiment of the present specification.
12 is a diagram illustrating a display device according to an exemplary embodiment of the present specification.
13 is a cross-sectional view taken along line III-III' shown in FIG. 12.
14A to 14D are views illustrating a display device according to another exemplary embodiment of the present specification.
15 is a view showing a vibration generating device according to another embodiment of the present specification.
16 is a cross-sectional view taken along line IV-IV' shown in FIG. 15.
17 is a view measuring transmittance of the vibration generating device according to the embodiment of the present specification.
18 is a view measuring the acoustic characteristics of the vibration generating device according to the embodiment of the present specification.
19 is a view showing a vibration generating device according to another embodiment of the present specification.
20 is a view showing a vehicle according to an embodiment of the present specification.
21 is a view showing a vehicle according to another embodiment of the present specification.
22 is a view showing a vehicle according to another embodiment of the present specification.
23 is a view showing a vehicle according to another embodiment of the present specification.
24 is a view showing a vehicle according to another embodiment of the present specification.

Advantages and features of the present specification, and a method of achieving them will be apparent by referring to embodiments described below in detail together with the accompanying drawings. However, the present specification is not limited to the embodiments disclosed below, but will be implemented in various different forms, and only the embodiments allow the disclosure of the present specification to be complete, and common knowledge in the technical field to which the present specification pertains. It is provided to fully inform the person having the scope of the invention, and this specification is only defined by the scope of the claims.

The shapes, sizes, ratios, angles, numbers, etc. disclosed in the drawings for describing the embodiments of the present specification are exemplary, and the present specification is not limited to the illustrated matters. The same reference numerals refer to the same components throughout the specification. In addition, in the description of the present specification, when it is determined that a detailed description of related known technologies may unnecessarily obscure the subject matter of the present specification, the detailed description will be omitted.

When "include," "have," "consist of" and the like referred to herein are used, other parts may be added unless "only" is used. When a component is expressed as a singular number, the plural number is included unless otherwise specified.

In interpreting the components, it is interpreted as including the error range even if there is no explicit description of the error range.

In the case of the description of the positional relationship, for example, when the positional relationship of two parts is described, for example, "upper," "upper," "lower," "next to", for example, "right" Alternatively, one or more other parts may be located between the two parts unless "direct" is used.

For a temporal relationship, when a temporal sequential relationship is described, such as "after," "after," "after," "before", etc., unless "directly" or "directly" is used unless continuous It may also include.

The first, second, etc. are used to describe various components, but these components are not limited by these terms. These terms are only used to distinguish one component from another component. Accordingly, the first component mentioned below may be the second component within the technical spirit of the present specification.

In describing the components of the present specification, terms such as first, second, A, B, (a), and (b) may be used. These terms are only for distinguishing the component from other components, and the nature, order, order, or number of the component is not limited by the term. When a component is described as being "connected," "coupled," or "connected" to another component, the component may be directly connected to or connected to the other component, but has no specific description. It should be understood that other components may be "interposed" between each component that may or may be indirectly connected.

It should be understood that “at least one” includes all combinations of one or more of the associated components. For example, the meaning of "at least one of the first, second, and third components" means two of the first, second, and third components, as well as the first, second, or third components. It can be said to include a combination of all the components of more than one.

In the present specification, the “display device” may include a display device such as a liquid crystal module (LCM) and an organic light emitting display module (OLED module) including a display panel and a driver for driving the display panel. And, an electronic device including a laptop computer, a television, a computer monitor, a vehicle or an automotive apparatus or other form of a vehicle, which is a complete product or a final product including an LCM, an OLED module, and the like. It may also include a set electronic apparatus or set device, such as an (equipment apparatus), a mobile electronic apparatus such as a smartphone or an electronic pad.

Accordingly, the display device in the present specification may include a display device itself, such as an LCM, an OLED module, and even a set device that is an application product or an end consumer device including an LCM, an OLED module.

In addition, in some examples, LCM and OLED modules composed of a display panel and a driving unit may be expressed as a “display device”, and electronic devices as finished products including LCM and OLED modules may be classified and expressed as “set devices”. For example, the display device may include a display panel of liquid crystal (LCD) or organic light emitting (OLED) and a source PCB as a control unit for driving the display panel. The set device may further include a set PCB that is a set control unit electrically connected to the source PCB to drive the entire set device.

The display panel used in the present embodiment may be any type of display panel, such as a liquid crystal display panel, an organic light emitting diode (OLED) display panel, and an electroluminescent display panel. The example is not limited to this. For example, the display panel may be a display panel capable of generating sound by vibrating by the vibration generating device according to the embodiment of the present specification. The display panel applied to the display device according to the exemplary embodiment of the present specification is not limited to the shape or size of the display panel.

For example, when the display panel is a liquid crystal display panel, it may include a plurality of gate lines and data lines, and pixels formed in an intersection region between the gate lines and the data lines. Then, an array substrate including a thin film transistor, which is a switching element for controlling light transmittance in each pixel, an upper substrate including a color filter and/or black matrix, and a liquid crystal layer formed between the array substrate and the upper substrate. It may be configured to include.

When the display panel is an organic light emitting (OLED) display panel, it may include a plurality of gate lines and data lines, and pixels formed in an intersection region of the gate lines and/or data lines. And, an array substrate including a thin film transistor which is a device for selectively applying voltage to each pixel, an organic light emitting device (OLED) layer on the array substrate, and an encapsulation substrate disposed on the array substrate to cover the organic light emitting device layer Or it may be configured to include an encapsulation (Encapsulation) substrate. The encapsulation substrate protects the thin film transistor and the organic light emitting device layer from external impact, and prevents moisture or oxygen from penetrating the organic light emitting device layer. In addition, the layer formed on the array substrate may include an inorganic light emitting layer, for example, a nano-sized material layer, and a quantum dot emission layer. Another example may include a micro light emitting diode.

The display panel may further include a backing such as a metal plate attached to the display panel. Other structures may also be included, eg, other structures made of different materials.

Each of the features of the various embodiments of the present specification may be partially or wholly combined with or combined with each other, technically various interlocking and driving may be possible, and each of the embodiments may be independently implemented with respect to each other or may be implemented together in an association relationship. It might be.

Hereinafter, an embodiment of the present specification will be described with reference to the accompanying drawings and examples. In adding reference numerals to the components of each drawing, the same components may have the same reference numerals as possible even though they are displayed on different drawings. In addition, the scale of components shown in the accompanying drawings has a different scale from the actual one for convenience of description, and is not limited to the scale shown in the drawings.

1A and 1B are views illustrating a display device according to an exemplary embodiment of the present specification.

1A and 1B, a vibration generating device 20 may be applied to provide effects such as haptic or sound generation to a display device. For example, the vibration generator 20 may be a voice coil motor (VCM) type having a high vibration strength or a piezoelectric actuator using a piezoelectric ceramic element. Since the vibration generator 20 using a voice coil motor or a piezoelectric ceramic element is large in size or thick and opaque, it cannot be disposed on the front side of the display device, and must be placed on the back side of the display device, so that the user can use the surface of the display device. There is a problem in that the magnitude of vibration acceleration felt through is reduced. For example, the piezoelectric actuator is composed of a stacked actuator in which several layers are stacked, and thus, when configured in a display device, there is a problem in that the thickness of the display device increases and the power consumption increases. And, when the piezoelectric actuator is configured in a film form, there is a problem that the sound pressure is low compared to a voice coil motor. In addition, in the case of a piezoelectric composite including a piezoelectric ceramic element, the piezoelectric composite vibrates in the left and right directions based on the horizontal direction of the display device, so it is difficult to obtain sufficient vibration and the piezoelectric ceramic is easily fragile.

In addition, the vibration generating device 20 of the VCM type or the piezoelectric actuator has the advantage that the vibration strength is large, but since it is an opaque device, it can degrade the function of displaying an image of the display panel when it is disposed on the front of the display device. It had to be placed on the back of the device.

1A is a diagram showing an example of a vibration generating device 20 applied to an organic light emitting display device (OLED).

Referring to FIG. 1A, the organic light emitting display device includes a substrate 11 including a thin film transistor, an organic light emitting device 12 disposed on the substrate 11, an encapsulation layer 13, and a touch unit 14. An organic light emitting display panel 10 including a front member 15 may be included. As a back support structure of the display device, a back plate 16 may be further included. Since the vibration generating device 20 for imparting a haptic function or the like to the organic light emitting display device is an opaque device, it may be disposed on the rear surface of the display device, for example, the rear surface or the inner surface of the back plate 16. Therefore, since the efficiency of transmitting the vibration of the vibration generating device 20 disposed at the rear of the display device to the front of the organic light emitting display panel 10 is low, strong vibration must be generated in order to recognize the haptic vibration to the user. Accordingly, not only the vibration of the display device increases, but also the power consumption for driving the vibration generating device 20 increases.

1B is a view showing an example of a vibration generating device 20 applied to a liquid crystal display (LCD).

Referring to FIG. 1B, a liquid crystal display device includes a substrate 11 including a thin film transistor and a liquid crystal layer, a touch portion 14 disposed on the substrate 11, and a liquid crystal display panel including a front member 15 ( 10'). The rear surface of the liquid crystal display panel 10 ′ may further include a backlight 17 that provides a backlight to the liquid crystal display panel, and a cover bottom 18 as a back support structure of the display device. Since the vibration generating device 20 applied to the liquid crystal display device is an opaque device, it may be disposed on the rear surface of the display device, for example, the inner surface or the rear surface of the cover bottom 18. Since a backlight is disposed between the vibration generating device 20 and the front surface of the display panel, the efficiency at which the vibration of the vibration generating device 20 is transmitted to the front surface of the liquid crystal display panel 10' is lowered. Therefore, in order to recognize the haptic vibration to the user, strong vibration must be generated, and accordingly, not only the vibration of the display device increases, but also the power consumption for driving the vibration generating device 20 increases. Therefore, the inventors of the present specification have recognized that it is necessary to develop a vibration generating device capable of providing haptic vibration or sound to a display device.

2 is a diagram illustrating an example in which a display device according to an exemplary embodiment of the present disclosure is applied to a vehicle.

Referring to FIG. 2, it is a diagram illustrating a phenomenon in which a reflected image is displayed on a vehicle windshield. In the vehicle, a cluster or a vehicle display 30 of a certain size may be disposed on the right side of the cluster in order to provide information to navigation or other users. The vehicle display 30 may be a vehicle infotainment device for providing various information to a vehicle driver, and a display device having a predetermined size or more may be disposed in front or in front of the driver or passenger. In the case of the vehicle display 30, the light output from the display may be reflected on the inner surface of the windshield 32 in the front of the vehicle, and there is a possibility that the front view of the vehicle is disturbed by the reflected light. For example, a liquid crystal display device or an organic light emitting display device may be used as the vehicle display 30. Since the display device has a viewing angle greater than or equal to a certain level, the windshield 32, which is the windshield of the vehicle, among the light output from the display device The reflection image 30 ′ may be recognized by being reflected from the inner surface. Therefore, there is a possibility that a obstacle is generated in the field of view in front of the vehicle due to reflected light by the windshield 32, and this phenomenon is a problem that causes obstacles in driving the vehicle when the surroundings are dark, such as at night or inside a tunnel. Accordingly, it should be possible to block a certain amount of light emitted in the vehicle display device toward the vehicle windshield.

Accordingly, the inventors of the present specification have recognized the above-mentioned problems and conducted various experiments capable of improving vibration characteristics or haptic characteristics. After several experiments, it was recognized that a piezoelectric ceramic should be constructed in order to have vibration characteristics, complementary to the brittleness of the piezoelectric ceramic, and composed of organic materials in order to realize rigidity and flexibility. Accordingly, the inventors of the present specification have been arranged on the front or inner surface of the display device to provide vibration characteristics or haptic characteristics, and have invented a vibration generating device capable of controlling an optical path, a display device including the same, and a vehicle.

Hereinafter, the vibration generating device will be described with the same concept as the piezoelectric optical device.

Hereinafter, embodiments of the vibration generating device according to the exemplary embodiment of the present specification, a display device including the same, and a vehicle will be described in detail.

3 is a plan view showing a vibration generating device according to an embodiment of the present disclosure, and FIG. 4 is a cross-sectional view of line I-I' shown in FIG. 3.

3 and 4, the vibration generating apparatus 100 according to the embodiment of the present specification

Provides an electric field that generates piezoelectric characteristics in at least one of the piezoelectric ceramic part 110, the piezoelectric material layer 120, the piezoelectric ceramic part 110, and the piezoelectric material layer 120 disposed between the piezoelectric ceramic parts 110 and the piezoelectric ceramic part 110. It may be configured to include an electrode unit 130.

For example, a plurality of piezoelectric ceramic parts 110 that are spaced apart while having a constant pitch P and are disposed in a first direction X while having a first width W and a first thickness T , An electrode unit 130 including a first electrode 132 provided on a first surface of the piezoelectric ceramic unit 110 and a second electrode 134 provided on a second surface of the piezoelectric ceramic unit 110, and It may include a piezoelectric material layer 120 disposed between a plurality of piezoelectric ceramic parts. The piezoelectric ceramic portion 110 may be a first portion, and the piezoelectric material layer 120 may be a second portion. For example, the piezoelectric material layer 120 may be formed of a transparent piezoelectric material layer in order to realize transparency.

Each of the plurality of piezoelectric ceramic parts 110 may have a stripe shape extending in a first direction (X-axis direction) of the vibration generating device 100 while having a constant first width W. The plurality of piezoelectric ceramic parts 110 may be arranged at a predetermined interval, for example, while having a pitch P.

The first direction (X-axis direction) may be a long axis direction of the display device, but is not limited thereto. For example, it may be a direction perpendicular to the direction from the center of the display device to the reflector causing the reflected light effect according to FIG. 2. For example, when the display device to which the vibration generating device according to the embodiment of the present disclosure is applied is disposed in the vehicle device of FIG. 2, the vertical direction from the display device to the vehicle windshield becomes the Y-axis direction, and the Y-axis direction and The vertical horizontal direction is the X-axis direction, and the first direction, which is the extension direction of the piezoelectric ceramic unit 110, may be the X-axis direction.

As will be described later with reference to FIG. 5, the piezoelectric ceramic part 110 of the vibration generating device according to the embodiment of the present specification may block a light path as an opaque part while providing a strong piezoelectric effect (for example, vibration). Therefore, when the piezoelectric ceramic unit 110 extends in the first direction, the piezoelectric ceramic unit 110 can selectively block light from the display device to the reflector, thereby maintaining a desired light path control function.

The piezoelectric ceramic unit 110 according to the exemplary embodiment of the present specification may be formed of a material having opaque optical characteristics and strong piezoelectric characteristics that do not transmit light. For example, the piezoceramic unit 110 may include PZT (Lead Zirconate Titanate; PbZrO ₃ ) based ceramic material, polycrystalline PT (Lead Titanate; PbTiO ₃ ) based ceramic material, PZT-Complex Perovskite (PZT-Complex Perovskite) Materials, such as BaTiO ₃ It may be configured, but is not limited thereto. For example, the piezoceramic unit 110 may be formed of a piezoelectric material or a piezoelectric ceramic fiber material having opaque optical properties and strong piezoelectric properties that do not transmit light.

The vibration generating device 100 according to the embodiment of the present specification may be configured in a film form having a certain thickness, and between the plurality of piezoelectric ceramic parts, for example, the vibration generating device 100 except for the piezoelectric ceramic part 110 ), the piezoelectric material layer 120 may be disposed in the entire space. For example, when the vibration generating device 100 is implemented in a film form, the thickness of the display panel may not increase due to the vibration generating device 100 because it may have a thinner thickness than the display panel. The vibration generating device 100 may use a display panel as a vibration plate. For example, the vibration generating device 100 may be represented by a sound generating module, a sound generating device, a film actuator, a film type piezoelectric composite actuator, a film speaker, a film type piezoelectric speaker, or a film type piezoelectric composite speaker, etc. It is not limited to terms.

The piezoelectric material layer 120 may be made of a transparent piezoelectric material having a light transmittance of a predetermined or higher. For example, the piezoelectric material layer 120 includes PVDF (polyvinylidene fluoride), P (VDF-TrFE) (polyvinylidene fluoride-co-trifluoroethylene), relaxed ferroelectric polymer, P (VDF-TrFe-CFE), P (VDF- TrFE-CTFE), CNT (carbon nanotube) doped PVDF polymer, poly bis (trifluoroethoxy) may be one or more of phosphazene (phosphazene), but is not limited thereto. For example, the piezoelectric material layer 120 may be applied with a polymer material having piezoelectricity while having a light transmittance of a predetermined or more. In addition, the piezoelectric characteristics of the piezoelectric material layer 120 may be lower than the piezoelectric characteristics of the piezoelectric ceramic portion 110.

The vibration generating apparatus 100 according to the embodiment of the present specification may include an electrode unit 130 for providing an electric field capable of generating a piezoelectric effect to the piezoelectric material layer 120 and the piezoelectric ceramic unit 110. . The electrode unit 130 may include a first electrode 132 disposed on a first surface of the piezoelectric ceramic unit 110 and a second electrode 134 disposed on a second surface of the piezoelectric ceramic unit 110. . In addition, the third electrode 136 electrically connected to the second electrode 134 and disposed on one side of the piezoelectric ceramic 110 and the piezoelectric material layer 120 may be further included. The third electrode 136 may be a transparent electrode.

Referring to FIG. 4, the first electrode 132 may be disposed on the first side surface 112 and the top surface 114 of the piezoelectric ceramic portion 110. The second electrode 134 may be disposed on the second side 116 of the piezoelectric ceramic portion 110. The arrangement of the first electrode 132 and the second electrode 134 may be configured differently. For example, the first electrode 132 is disposed only on the first side 112 of the piezoelectric ceramic portion 110, and the second electrode 134 is disposed only on the second side 116 of the piezoelectric ceramic portion 110. Or, it may be disposed on both the second side 116 and the upper surface 114 of the piezoelectric ceramic 110.

The first electrode 132 and the second electrode 134 constituting the electrode unit 130 may be opaque metal materials. Metals such as copper (Cu), aluminum (Al), nickel (Ni), chromium (Cr), nickel-phosphorus (Ni-P), tungsten (W), platinum (Pt), silver (Ag), for example Materials or alloy materials thereof. The third electrode 136 constituting the electrode unit 130 is electrically connected to the second electrode 134 and may be disposed on one front surface of the piezoelectric ceramic unit 110 and the piezoelectric material layer 120. The third electrode 136 may be formed of an indium tin oxide (ITO), an indium zinc oxide (IZO), which is a transparent conductive material, but is not limited thereto.

Referring to FIG. 3, the driving unit 150 includes a plurality of first connection wirings 152 connected to a plurality of first electrodes 132 spaced apart, and a third electrode disposed on the front surface of the vibration generating device 100 ( A voltage that generates a piezoelectric effect may be applied to the piezoelectric ceramic portion 110 and the piezoelectric material layer 120 through the second connection wiring 154 connected to 136). The third electrode 136 has the effect of reducing the number of connection wirings between the driving unit 150 and the electrode unit 130.

In addition, the vibration generating device 100 according to the embodiment of the present specification may provide vibration to the display panel according to a user's touch input input to the display device. Accordingly, the driving unit 150 receives a touch input detection signal from the touch driving unit 210 provided in the display device on which the vibration generating device 100 is disposed to the display panel, and accordingly, the electrode unit of the vibration generating device 100. Power may be applied to the 130 to operate the vibration generating device 100 to generate a certain amount of vibration or more. The driving unit 150 may be included inside the touch driving unit 210 provided in the display device, or may be provided separately from the touch driving unit.

The vibration generating apparatus 100 according to the embodiment of the present specification should include a piezoelectric effect and a light control function that blocks or controls a path of light emitted from the display device. Therefore, the vibration generating device 100 has a pitch (P), a first width (W), and a first thickness (T) of the piezoelectric ceramic unit 110 in order to have vibration characteristics and light control characteristics while maintaining transparent characteristics. It can be implemented to have.

The pitch P of the piezoelectric ceramic unit 110 may be a separation distance between each piezoelectric ceramic unit 110 or a second direction perpendicular to the first direction (Y-axis direction) as shown in FIG. 3. have. The first width W of the piezoelectric ceramic portion 110 may be a width of each piezoelectric ceramic portion as viewed from above or a width of formation of each piezoelectric ceramic portion in a second direction (Y-axis direction) perpendicular to the first direction. The first thickness T of the piezoelectric ceramic portion 110 is the height or depth of formation of the piezoelectric ceramic portion in the thickness direction (for example, a direction perpendicular to both the X and Y axis directions) of the vibration generating device according to the present embodiment. Can be In order to maintain vibration characteristics and light control characteristics while maintaining minimum transparent characteristics, the pitch P of the piezoelectric ceramic portion 110 is greater than the first width W of the piezoelectric ceramic portion 110, and the piezoelectric ceramic portion ( The first thickness T of 110) may be greater than the pitch P.

Hereinafter, the pitch P of the piezoelectric ceramic unit 110, the first width W, and the first thickness T will be described.

For example, in order to prevent each piezoelectric ceramic portion 110 extending in the first direction from being viewed by the user in a stripe shape, the first width W of the piezoelectric ceramic portion 110 is 30 μm or less, for example For example, it may be about 20 μm or less, and may be about 10 μm. The pitch P of the piezoelectric ceramic unit 110 may be 2 times or more and 5 times or less of the first width W, for example, about 30 μm. When the pitch P of the piezoelectric ceramic portion 110 is less than or equal to twice the first width W, the interval between the piezoelectric ceramic portions 110 is too close to deteriorate the transparency of the vibration generating device. When the pitch P of the piezoelectric ceramic unit 110 is 5 times or more of the first width W, the light control function of blocking light in the second direction may not be satisfied.

The first thickness T of the piezoelectric ceramic portion 110 may be 2 times or more and 4 times or less of the pitch P, for example, about 100 μm. When the first thickness T of the piezoelectric ceramic portion 110 is less than or equal to twice the pitch P, the light blocking effect in the second direction cannot be sufficiently secured due to the overall thickness reduction of the vibration generating device. When the first thickness T of the piezoelectric ceramic portion 110 is 4 times or more of the pitch P, not only the overall transmittance is lowered, but the light of the display device is directed toward the front side so that the viewing angle of the display device may be reduced.

Therefore, the first width W of the piezoelectric ceramic portion is 30 μm or less, for example, 20 μm or less, the pitch P is 2 times or more and 5 times or less of the first width W, and the first thickness T is By setting the pitch P to 2 times or more and 4 times or less, it is possible to maintain desired light control characteristics while maintaining minimal transparency of the vibration generating device.

The vibration generating apparatus according to the embodiment of the present specification may further include protective layers 142 and 144 covering one or more of the upper and lower front surfaces of the piezoelectric ceramic portion 110 and the piezoelectric material layer 120. The protective layers 142 and 144 may protect the electrode portion 130 of the vibration generating device and improve insulation between the electrodes.

The top view of FIG. 3 is a bottom view of FIG. 4, which is a cross-sectional view, for example, as viewed from the direction of the incident surface of light. A plurality of piezoelectric ceramic parts 110 and electrode parts 130 extending in a first direction and spaced at a constant pitch P are disposed, and a protective layer is provided on one front surface of the piezoelectric ceramic parts 110 and electrode parts 130. 142 may be disposed.

Therefore, according to the exemplary embodiment of the present specification, the piezoelectric ceramic unit 110 and the light blocking effect are improved while the first electrode 132 and the second electrode 134 are disposed to surround the piezoelectric ceramic unit 110. The strength of the electric field applied to the piezoelectric material layer 120 may be strengthened to improve piezoelectric properties. In addition, since the third electrode 136 disposed on the front surface of one side of the vibration generating device 100 functions as a common electrode, there is an advantage that it is possible to easily apply a voltage to the second electrode 134. .

In addition, the vibration generating device 100 according to the embodiment of FIGS. 3 and 4 is disposed near a display panel such as a liquid crystal display device or an organic light emitting display device, and transmits the light of the display device in a predetermined path while transmitting the electrode. It is possible to provide a haptic vibration by the piezoelectric effect of the piezoelectric ceramic portion and the piezoelectric material layer due to the voltage difference applied to the portion.

5 is a view showing an optical path control function of the vibration generating device according to the embodiment of the present specification.

The first electrode 132 and the second electrode 134 disposed on the piezoelectric ceramic portion 110 and the piezoelectric ceramic portion 110 of the vibration generating apparatus 100 according to the embodiment of the present specification are made of an opaque material Light can be blocked.

Referring to FIG. 5, light L1 directed in a second direction (Y-axis direction) in which a light reflector causing reflection is disposed among light output from the display device is blocked by the piezoelectric ceramic unit 110 or the like, and the second direction ( In the Y-axis direction), only light L2 within a certain viewing angle range can be transmitted. Therefore, since the light of the display device does not reach the light reflector by the light control function of the vibration generating device 100, it is possible to solve the problem that the light of the display device is reflected from the light reflector such as a vehicle windshield.

6 is a diagram illustrating a display device including a vibration generating device according to an embodiment of the present specification.

Referring to FIG. 6, the liquid crystal display device includes a liquid crystal display panel 300 including a thin film transistor substrate, a backlight 220 providing a backlight to the liquid crystal display panel 300, a backlight 220 and a liquid crystal display panel 300. Between, it may include a vibration generating device 100 according to the embodiment of FIGS. 3 and 4 disposed on one or more of the upper surface of the liquid crystal display panel 300 and the lower surface of the liquid crystal display panel 300.

The liquid crystal display panel 300 may include an array substrate including a thin film transistor, an upper substrate provided with a color filter and/or black matrix, and a liquid crystal layer formed between the array substrate and the upper substrate. The arrangement state of the liquid crystal layer may be adjusted according to the electric field applied between both electrodes of the pixel area, and the transmittance of light may be adjusted according to the arrangement state of the liquid crystal layer to be a display panel on which an image is displayed. The liquid crystal display panel 300 may include an active area (AA) that provides an image to a user and a non-active area (NA) that is a peripheral area of the display area AA. The liquid crystal display panel 300 may be manufactured by bonding a first substrate that is an array substrate including a pixel region by forming a thin film transistor, and a second substrate as an upper substrate on which a black matrix and/or color filter layer is formed.

The array substrate or the first substrate on which the thin film transistor is disposed includes a plurality of gate lines GL extending in a first direction and a plurality of data lines extending in a second direction perpendicular to the first direction. One pixel area (Pixel) P may be defined by the data line. One or more thin film transistors are formed in one pixel area P, and the gate electrode or source electrode of each thin film transistor may be connected to a gate line or a data line.

The backlight 220 includes a light source unit 221, a light guide plate 224 extending light from the light source unit 221 to the front of the liquid crystal display panel 300, and a reflector 222 reflecting light toward the liquid crystal display panel 300. It can contain. One or more optical sheets 226 may be further disposed on the light guide plate 224, and the optical sheet may include a light diffusion sheet for diffusing light, an optical prism sheet for condensing, and the like.

7 is a view illustrating a display device including a vibration generating device according to another embodiment of the present specification.

Referring to FIG. 7, the liquid crystal display device includes a liquid crystal display panel 300 including a thin film transistor substrate, a backlight 220 providing a backlight to the liquid crystal display panel 300, a backlight 220 and a liquid crystal display panel 300. Between, the upper surface of the liquid crystal display panel 300 and the lower surface of the liquid crystal display panel 300 may be configured to include the vibration generating device 100 according to the embodiment of FIGS. 3 and 4.

In addition, the vibration generating device 100 is disposed on the front surface of one side to which light is input, for example, between the backlight 220 and the liquid crystal display panel 300, and condensing the light to improve light transmission efficiency. The prism sheet 160 may be further included. The optical prism sheet 160 may include various functional sheets such as a reflective polarizing film for improving luminance. The reflective polarizing film may be an optical film that transmits only light that vibrates in one direction among incident natural light while vibrating in various directions and reflects light that vibrates in the other direction, for example, DBEF (dual brightness enhancement film; DBEF). It may include a brightness enhancement film.

The liquid crystal display panel 300 of FIG. 7 may have the same configuration as that of FIG. 6. The backlight 220 in the embodiment of FIG. 7 includes a light source unit 221, a light guide plate 224 extending light from the light source unit to the front of the liquid crystal display panel 300, and a reflector reflecting light toward the liquid crystal display panel 300 ( 222). In addition, the backlight 220 according to the embodiment of FIG. 7 may further include an optical sheet, such as an additional diffusion plate, separately from the optical prism sheet 160 included in the vibration generating device 100.

In the present specification, the "display device" is a liquid crystal module (LCM) including a display panel and a driving unit for driving the display panel, or a narrow display device such as an organic light emitting module and a finished product including an LCM or an organic light emitting module. It may also include a set electronic device or set device, such as a mobile electronic device such as a laptop computer, television, computer monitor, smart phone or electronic pad. For example, the display device in the present specification may include not only a narrow display device such as an LCM, but also a set device which is an application product containing the same.

In another embodiment of the present specification, an organic light emitting display device including an organic light emitting display panel including a thin film transistor substrate and a vibration generating device according to embodiments of the present specification disposed on the front surface of the organic light emitting display panel may be provided. . The OLED display panel is a single assembly form in which multiple layers such as a light emitting panel layer and an encapsulation layer as a glass substrate including an organic light emitting device and a thin film transistor (TFT) are combined into a single panel. It may be a display panel.

The liquid crystal display device or the organic light emitting display device may further include a touch driver (210 in FIG. 3) that detects a user's touch input and a driver 150 that controls the driving of the vibration generating device 100, and the driver 150 ) Receives a touch input detection signal from the touch driver 210 of the display device to the liquid crystal display panel or the organic light emitting display panel, and when the touch input detection signal is received, powers the electrode unit of the vibration generating device 100. It can operate to apply.

8 is a plan view showing a vibration generating device according to another embodiment of the present disclosure, and FIG. 9 is a cross-sectional view of line II-II' shown in FIG. 8.

8 and 9, the vibration generating device 1100 is a piezoelectric ceramic portion 1110 disposed while having a first width (W) in a lattice-type, piezoelectric disposed in the internal partition space between the piezoelectric ceramic portion An electrode portion 1130 including a first electrode 1132 and a second electrode 1134 disposed on the lower front and upper front surfaces of the material layer 1120 and the piezoceramic portion 1110 and the piezoelectric material layer 1120, respectively. It may include. The first electrode 1132 and the second electrode 1134 may be transparent electrodes.

8 and 9, when compared to the embodiment of FIG. 3, the vibration generating device 1100 is disposed in a grid or matrix form on the front surface of the vibration generating device, not in a stripe shape in which the piezoelectric ceramic portion 1110 extends in the first direction. The electrode portions 1130 are not disposed on the surface of the piezoelectric ceramic portion, but are disposed on opposite sides of the vibration generating device.

Materials of the piezoelectric ceramic part 1110 of the vibration generating device 1100 of FIGS. 8 and 9, pitch (P), first width (W), first thickness (T), material of the piezoelectric material layer 1120, etc. Since the configuration may be applied similarly or identically to the contents described with reference to the embodiment of FIG. 3, a detailed description is omitted.

In addition, the vibration generating device 1100 of FIGS. 8 and 9 may be applied to a liquid crystal display device or an organic light emitting display device, and a configuration that may further include an optical prism sheet is also described with reference to the embodiment of FIG. 3. Similar or equally applicable.

8 and 9, since the piezoceramic unit 1110 is arranged in a lattice shape, the vibration generating device 1100 blocks light in both the first direction and the second direction, so that light blocking characteristics can be improved. For example, since light can be transmitted only at a constant viewing angle in front of the display device, the light reflection reflection phenomenon described in FIG. 2 can be further suppressed. In addition, when supplying a voltage to generate a piezoelectric vibration effect, only the first electrode 1132 and the second electrode 1134 formed on both surfaces of the vibration generating device 1100 need to be supplied with voltage, so that between the driving unit and the electrode There is an effect that the structure of the connecting wiring of can be simplified.

10 is a view showing a vibration generating device according to another embodiment of the present specification.

Referring to FIG. 10, the vibration generating device 2100 according to another embodiment of the present specification is spaced apart while having a pitch P, and a first having a first width W and a first thickness T A plurality of piezoelectric ceramic portions 2110 extending in the direction, a piezoelectric material layer 2220 disposed between the plurality of piezoelectric ceramic portions 2110, and a piezoelectric ceramic portion and a piezoelectric material layer disposed on upper and lower front surfaces, respectively. It may include an electrode portion comprising a first electrode and a second electrode. The first electrode and the second electrode may be configured as transparent electrodes.

The vibration generator 2100 of FIG. 10 combines the configuration of the piezoelectric ceramic portion and the piezoelectric material layer of the vibration generator of FIG. 3 with the configuration of the electrode portions of FIGS. 8 and 9.

The configuration of the material of the piezoelectric ceramic portion 2110, the pitch P, the first width W, the first thickness T, and the material of the piezoelectric material layer 2220 of the vibration generating device 2100 of FIG. Since the contents described with reference to the embodiment of FIG. 3 may be applied similarly or identically, a detailed description will be omitted.

In addition, the vibration generating device 2100 of FIG. 10 may be applied to a liquid crystal display device or an organic light emitting display device, and a configuration that may further include an optical prism sheet is similar or identical to that described with reference to the embodiment of FIG. 3. Can be applied.

Since the vibration generating device 2100 of FIG. 10 imparts a light blocking effect in the first direction, it has better light transmittance than the vibration generating device according to the embodiments of FIGS. 8 and 9, and an electrode part forming process and a driving part and an electrode There is an effect that the structure of the connecting wiring between can be simplified.

11A and 11B are diagrams for explaining the piezoelectric effect of the vibration generating device according to the embodiment of the present specification.

11A shows piezoelectric performance according to the strength and electric field strength of the electric fields E1 and E2 generated between both electrodes in the vibration generating apparatus of FIG. 3. FIG. 11B illustrates piezoelectric performance according to the strength of the electric field E3 and the electric field strength generated between both electrodes of the vibration generating device of FIG. 8 or 10.

Referring to FIG. 11A, in the vibration generating device of FIG. 3, a first electric field is disposed between the first electrode 132 disposed on the first surface of the piezoelectric ceramic unit 110 and the second electrode 134 disposed on the second surface. (E1) is formed, and the piezoelectric ceramic unit 110 may cause mechanical deformation by the first electric field E1. Since the distance between the first electrode 132 and the second electrode 134 of the vibration generating device of FIG. 3 is as small as the first width W of the piezoelectric ceramic unit 110, even when the same potential difference is given, A strong first electric field E1 may be generated.

Referring to FIG. 11B, in the vibration generating device of FIG. 8 or 10, the electrode part is composed of the first electrode 1132 and the second electrode 1134 which are disposed on both sides of the vibration generating device, and thus the first by voltage application. A third electric field E3 is formed between the electrode 1132 and the second electrode 1134, and the piezoelectric ceramic unit 1110 or 2110 and the piezoelectric material layer 1120 or 2220 are vibrated by the third electric field E3. can do.

And, as shown in Table 1 below, it can be seen that the piezoelectric characteristics of the material of the piezoelectric ceramic portion 110 are superior to those of the piezoelectric material layer 120. Therefore, in the case of the vibration generating device of FIG. 3, even if the same potential difference is provided between both electrodes, it can exhibit strong piezoelectric properties compared to the vibration generating device of FIGS. 8 and 10. Accordingly, the vibration generating device of FIG. 3 can implement stronger vibration characteristics with the same power, or reduce power consumption required for a specific vibration effect.

In Table 1 below (1) is a VCM piezoelectric actuator, (2) is a piezoelectric ceramic material, (3) is a piezoelectric ceramic and piezoelectric material layer according to an embodiment of the present specification, and (4) is a transparent piezoelectric polymer material .

[Table 1]

As shown in Table 1, in the case of (3) having a configuration of mixing the piezoelectric material layer disposed between the piezoelectric ceramic portion and the piezoelectric ceramic portion which is a vibration generating device according to an embodiment of the present specification, the VCM actuator 1, Compared to the piezoelectric ceramic (2) or the transparent piezoelectric material alone, it can be seen that it has piezoelectric properties (~3G), high transmittance (>75%), and flexibility at thin thicknesses (<300 μm). .

Therefore, the vibration generating device according to the embodiments of the present specification is disposed near a display panel such as a liquid crystal display device or an organic light emitting display device, and transmits light of the display device in a predetermined path while transmitting the voltage to the electrode unit. It is possible to provide haptic vibration due to the piezoelectric effect of the piezoelectric ceramic portion and the piezoelectric material layer by the car. For example, while having a mixed form of a piezoelectric ceramic layer and a piezoelectric material layer disposed between the piezoelectric ceramic portions, for example, by arranging the electrode portion of FIG. 3 and the size or arrangement of the piezoelectric ceramic portions, the display panel Can provide vibration, and can optimize light control characteristics.

12 is a view showing a display device according to another exemplary embodiment of the present specification.

Referring to FIG. 12, the display device 50 according to an exemplary embodiment of the present specification may include a display module 500 and a support member 800. The display device 50 may output sound SW (or display vibration sound) according to the vibration of the display module 500 for displaying an image. Accordingly, the display device 50 according to the embodiment of the present specification uses the display module 500 as a diaphragm for sound generation and outputs the sound SW to generate sound (FD) in front of the screen of the display module 500 ( SW) can be output, and the sound quality is improved and the immersive feeling of a viewer or a listener can be increased.

13 is a cross-sectional view taken along line III-III' shown in FIG. 12.

Referring to FIG. 13, the display device 50 according to an exemplary embodiment of the present specification may include a display panel 600, a vibration generating device 700, a support member 800, and a panel guide 900.

The display panel 600 displays an image, for example, an electronic image or a digital image, and a liquid crystal display panel or an organic light emitting diode (OLED). It may be implemented as any type of display panel, such as a display panel, and an electroluminescent display panel. The display panel 600 may display an image using light emitted from the backlight 320. The display panel 600 may vibrate according to the vibration of the vibration generating device 700 to output sound SW to the front FD of the display panel 600 or provide haptic vibration to the display panel 600. have. The vibration generating device 700 may be disposed between the display panel 600 and the support member 800.

The display panel 600 according to an example may include an upper substrate 611, a lower substrate 613, a lower polarization member 615, and an upper polarization member 617.

The upper substrate 611 is a thin film transistor array substrate, and may include a pixel array having a plurality of pixels arranged in each pixel area formed by a plurality of gate lines and a plurality of data lines. Each of the plurality of pixels may include a thin film transistor connected to a gate line or a data line, a pixel electrode connected to the thin film transistor, and a common electrode formed adjacent to the pixel electrode and supplied with a common voltage.

The upper substrate 611 may further include a pad portion provided on the first edge and a gate driving circuit provided on the second edge.

The pad unit may supply a signal supplied from the outside to the pixel array and gate driving circuit. For example, the pad unit may include a plurality of data pads connected to a plurality of data lines through a plurality of data link lines, and a plurality of gate input pads connected to a gate driving circuit through a gate control signal line. The first edge of the upper substrate 611 including the pad portion protrudes from the side corresponding to the first edge of the lower substrate 613, and the pad portion may be exposed in a rear direction toward the support member 800. For example, the upper substrate 611 may have a larger size than the lower substrate 613.

The gate driving circuit may be embedded (or integrated) on the second edge of the upper substrate 611 so as to be connected one-to-one with the plurality of gate lines. In this case, the gate driving driving circuit may be a shift register including a transistor formed by the same process as the thin film transistor provided in the pixel region. As another example, the gate driving circuit may not be built in the upper substrate 111 and may be configured in a panel driving circuit.

The lower substrate 613 is a color filter array substrate, and may include a pixel definition pattern including an opening area overlapping each pixel area disposed on the upper substrate 611, and a color filter layer formed in the opening area. The lower substrate 613 according to an example may have a smaller size than the upper substrate 611. For example, the lower substrate 113 may overlap with the rest of the upper substrate 111 except for the first edge. The lower substrate 613 may be oppositely bonded to the rest of the upper substrate 611 with the liquid crystal layer interposed therebetween by a sealant.

The liquid crystal layer is interposed between the upper substrate 611 and the lower substrate 613, and is a liquid crystal in which the arrangement direction of liquid crystal molecules is changed according to an electric field formed by a data voltage and a common voltage applied to a pixel electrode for each pixel. It can be done.

The lower polarization member 615 may be attached to the lower surface of the lower substrate 613 to polarize light incident from the backlight 320 and going to the liquid crystal layer. The upper polarization member 617 may be attached to an upper surface of the upper substrate 611 to polarize light emitted through the upper substrate 611 and emitted to the outside.

Therefore, the display panel 600 according to an example may display an image according to light passing through the liquid crystal layer by driving the liquid crystal layer according to an electric field formed for each pixel by a data voltage and a common voltage applied to each pixel. have. Accordingly, in the display panel 600 according to an example, since the upper substrate 611 made of the thin film transistor array substrate constitutes an image display surface, the entire front surface is exposed to the outside without being covered by a separate mechanism. Can.

In the display panel 600 according to another example, the upper substrate 611 may be formed of a color filter array substrate, and the lower substrate 613 may be formed of a thin film transistor array substrate. Accordingly, the display panel 600 according to another example may have a shape in which the display panel 600 according to an example is vertically inverted. In this case, the pad portion of the display panel 600 according to another example may be covered by a separate mechanism.

The display device 50 according to an example may further include a sealing member 650. The sealing member 650 may be formed to surround side surfaces of the display panel 600. The sealing member 650 may be formed to cover each side and each edge of the display panel 600. The sealing member 650 may serve to protect the side surface of the display panel 600 from external impact or prevent light leakage from the side surface of the display panel 600. The sealing member 650 according to an example may be made of a silicone-based or ultraviolet (UV) curing-based sealing agent (or resin). The sealing member 650 may be made of an ultraviolet (UV) curing-based sealing agent in consideration of a process tact time. Further, the sealing member 650 according to an example may be colored (eg, blue, red, cyan, or black). Without being limited thereto, the sealing member 650 may be made of a colored resin or a light blocking resin to prevent side light leakage.

A portion of the upper surface of the sealing member 650 according to an example may be covered by the upper polarizing member 617. In this case, the upper polarizing member 617 is extended from the outer surface of the upper substrate 611 to cover a part of the front surface of the sealing member 650 and attached to a part of the front surface of the sealing member 650 It may include an extension. Therefore, the bonding surface (or boundary portion) between the sealing member 650 and the upper substrate 611 may be hidden by the extension portion of the upper polarization member 617 and not exposed in front of the display device where the viewer is located. For example, the front surface of the display panel 600 is not obscured by a separate mechanism, but is exposed to the front (FD) of the display device as it is, so if the sealing member 650 is not formed, the display panel 600 Side light leakage may occur. Accordingly, the sealing member 650 may be a configuration of a display device having a structure in which the entire front surface of the display panel 600 is exposed to the front (FD) in order to remove or minimize the bezel width of the display device.

The backlight 320 according to an example may be disposed on the rear surface of the display panel 600 and irradiate light to the rear surface of the display panel 600. The backlight 320 may include a light guide plate 324, a light source unit, a reflective sheet 322, and an optical sheet unit 326.

The light guide plate 324 may be disposed to overlap the display panel 600 and may include an incident surface provided on one side wall. The light guide plate 324 may include a light transmissive plastic or glass material. The light guide plate 324 may propagate (or exit) light incident from the light source through the incident surface toward the display panel 600.

The light source unit may irradiate light to the light incident surface provided on the light guide plate 324. The light source unit according to an example may include a plurality of light emitting diode elements mounted on a printed circuit board for a light source and irradiating light to an incident surface of the light guide plate 324. The light source unit may be disposed on the support member 800 so as to overlap the first edge of the display panel 600.

The reflective sheet 322 may be disposed on the support member 800 to cover the rear surface of the light guide plate 324. The reflective sheet 322 may minimize light loss by reflecting light incident from the light guide plate 324 toward the light guide plate 324.

The optical sheet portion 326 is disposed on the front surface of the light guide plate 324 to improve luminance characteristics of light emitted from the light guide plate 324. The optical sheet unit 326 according to an example may include a lower diffusion sheet, a lower prism sheet, and an upper prism sheet. Without being limited thereto, the diffusion sheet, the prism sheet, the double brightness enhancement film, and the lenticular sheet may be formed of one or more stacked combinations, or may be composed of a single composite sheet having light diffusion and condensing functions.

The panel guide 900 may support a rear edge portion of the display panel 600. The panel guide 900 may be supported or received by the support member 800. The panel guide 900 may be disposed under a rear edge portion of the display panel 600 so as not to protrude outside each side of the display panel 600. The panel guide 900 according to an example may include a panel support 910 and a guide sidewall 930. For example, the panel guide 900 may have a “┓” or “┓” shaped cross-sectional structure according to the coupling structure of the panel support 910 and the guide sidewall 930, and the structure is not limited to this. no. The panel guide 900 according to an example may be made of a plastic material, a metal material, or a mixed material of a plastic material and a metal material, but is not limited thereto.

The panel support unit 910 may be coupled to a rear edge portion of the display panel 600 and supported by the support member 800. The panel support 910 may have the same or smaller size than the display panel 600 so as not to protrude outside each side of the display panel 600. The panel support 910 may be in direct contact with the top surface of the backlight 320, for example, the top surface of the optical sheet portion 326, or may be spaced apart at a constant distance from the top surface of the optical sheet portion 326.

The guide side wall 930 may be connected to the panel support 910 to surround the side surface of the support member 800. For example, the guide side wall 930 may be bent from the panel support 910 toward the side of the support member 800 to surround the side surfaces of the support member 800.

The panel guide 900 according to an example may be coupled to a rear edge portion of the display panel 600 through the panel coupling member 950. The panel coupling member 950 is interposed between the rear edge portion of the display panel 600 and the panel support 910 of the panel guide 900 to couple the display panel 600 to the panel guide 900. The panel coupling member 950 according to an example may include an acrylic-based or urethane-based adhesive member. For example, the panel coupling member 950 is an acrylic series having relatively high adhesive strength and high hardness so that vibration of the panel guide 900 among the acrylic series and urethane series can be easily transmitted to the display panel 600. It may include an adhesive member. In this case, the panel bonding member 950 may include an acrylic adhesive layer, a double-sided foam adhesive pad, or an acrylic adhesive cured layer.

The front surface of the panel coupling member 950 according to an example may be combined with the lower substrate 613 or the lower polarization member 615 of the display panel 600, but improves adhesion with the display panel 600. In order to be directly coupled to the rear edge portion of the lower substrate 613. In this case, the panel coupling member 950 is attached to the rear edge portion of the lower substrate 613 to surround the side surface of the lower polarization member 615 to prevent side light leakage from the lower polarization member 615. .

The support member 800 may cover the rear surface of the display panel 600 while supporting the panel guide 900. The supporting member 800 may support one or more of a rear surface or a side surface of the display panel 600.

The support member 800 may be, for example, a cover bottom. For example, the display panel 600 may be enclosed by a side of a display panel 600 (lateral surface or side surface), combined with a cover bottom, and receiving one edge of the display panel 100 to support the display panel 600. ) May include a middle cabinet. For example, the middle cabinet may have a “┤” shaped cross section. The support member 800 may include a cover bottom, or a cover bottom and a middle cabinet, but is not limited to the structure of this example. The support member 800 may include any structure that can support the back or side of the display panel 600.

The support member 800 may be a plate-like member formed over the rear surface or the entire display panel 600. For example, the support member 800 may cover the entire rear surface of the display panel 600 spaced apart. The support member 800 may have a flat plate shape made of a glass material, a metal material, or a plastic material. For example, the edge or sharp edge portion of the support member 800 may have a slope shape or a curved shape by a chamfering process or a corner rounding process. For example, the support member 800 made of glass may be sapphire glass. For example, the metal support member 800 may be made of any one of one or more aluminum, aluminum alloy, magnesium alloy, and iron and nickel alloy. As another example, the support member 800 may have a laminated structure of a glass plate facing the rear surface of the display panel 600 while having a relatively thinner thickness than the metal plate and the glass plate. In this case, the display device 50 ) May be used as a mirror surface by a metal plate. However, it is not limited to the materials and shapes of this example.

In the present specification, the support member 800 is a cover bottom, a plate bottom, a back cover, a base frame, a metal frame, and a metal chassis. , Chassis Base, m-Chassis, and other expressions. Therefore, as a support for supporting the display panel 600, it may include any type of frame or plate-like structure disposed on the rear surface of the display device.

The display device 50 according to an example of the present specification may further include a system back cover 850. The system rear cover 850 may store the display panel 600 and wrap a side surface of the display panel 600. The system rear cover 850 according to an example may include a rear portion 851 and a side portion 853. The rear portion 851 is an outermost rear mechanism located on the rear surface of the display device 50 and supports (or stores) the display panel 600 and covers the rear surface of the display panel 100. The side portion 853 is an outermost side mechanism located on the side of the display device 50 and is provided at the edge of the rear portion 851 to cover one side of the display panel 600.

The vibration generating device 700 may include a first portion 701 and a second portion 702. The vibration generator 700 may be expressed as an actuator, an exciter, a transducer, a film-type vibration generator, or a piezoelectric vibration generator, and is not limited to terms. The vibration generating device 700 will be described later in FIGS. 15 and 16.

Referring to FIG. 13, the vibration generating device 700 may be disposed between the display panel 600 and the support member 800. For example, the vibration generating device 700 may be disposed between the display panel 600 and the backlight 320. When the vibration generating device 700 is disposed on the rear surface of the display panel 600, the vibration generating device 700 due to the structure between the display panel 600 and the support member 800, for example, the backlight 320, etc. ) There was a problem that the vibration of the display panel 600 can not be output. According to the exemplary embodiment of the present specification, since the vibration generating device 700 is implemented between the display panel 600 and the backlight 320, desired vibration can be transmitted to the front member. When the touch unit is configured on the display panel 600, the touch unit can be vibrated by the vibration of the vibration generating device 700, thereby effectively implementing haptic vibration.

14A to 14D are views illustrating a display device according to another exemplary embodiment of the present specification.

14A to 14D, the display devices 70, 75, 80, and 85 according to another embodiment of the present specification include a front member 815, a display panel 810, and a vibration generating device 700 can do.

The front member 815 constitutes the foremost structure of the display devices 70, 75, 80, and 85, and may serve to protect the screen of the display panel 810. The front member 815 may be disposed on the front surface of the display panel 810. For example, the front member 815 may protect the display panel 810 from external impact by covering the front surface of the display panel 810. In addition, the front member 815 may generate sound SW by vibrating together with the vibration of the vibration generating device 7000.

The front member 815 according to an embodiment may be made of a transparent plastic material, a glass material, or a reinforced glass material. As one example, the front member 815 may have any one of sapphire glass (Sapphire Glass) and gorilla glass (Gorilla Glass), or a stacked structure thereof, but is not limited thereto. As another example, the front member 815 may include a transparent plastic material such as PET (polyethyleneterephthalate). The front member 815 may be made of tempered glass in consideration of scratching and transparency. For example, the front member 815 may be a front structure, a front window, a cover window, a glass window, a cover screen, a screen cover, or window glass, but is not limited to the term.

The front member 815 according to an embodiment may have a polygonal shape including a rectangular shape or a square shape, or a non-polygonal shape including at least one side having a curved shape.

The display panel 810 is disposed on the rear surface (or rear surface) of the front member 815 and can display an image. The display panel 810 may serve as a touch sensor that senses a user touch on the front member 815. The display panel 810 may output sound SW according to the vibration of the vibration generating device 700 or generate haptic feedback (or haptic vibration) in response to a user touch. For example, the vibration generator 700 may be an acoustic generator that outputs sound. For example, the vibration generating device 700 may be a haptic device that generates haptic feedback or haptic vibration.

The display panel 810 may include a self-luminous display panel or a curved self-luminous display panel. For example, the display panel 810 may include a light emitting display panel, a micro light emitting diode display panel, a flexible light emitting display panel, or a flexible micro light emitting diode display panel, but is not limited thereto.

The display panel 810 according to an embodiment may have a polygonal shape including a rectangular shape or a square shape, or a non-polygonal shape including at least one side having a curved shape. The display panel 810 may have the same or different shape as the front member 815. For example, the front member 815 may have a rectangular shape, and the display panel 810 may have a rectangular shape having a smaller size than the front member 815. As another example, the front member 815 may have a non-polygonal shape, and the display panel 810 may have a non-polygonal shape or a rectangular shape having a smaller size than the front member 815.

The display panel 810 according to an exemplary embodiment may include a pixel array substrate 812 having a pixel array layer formed of a plurality of pixels, and an encapsulation layer 813 covering the pixel array layer.

The pixel array substrate 812 may include a base substrate and a pixel array layer disposed on the base substrate. The base substrate may include a plastic material or a glass material. The pixel array layer may include a pixel array having a plurality of pixels arranged in a display area on a base substrate.

Each of the plurality of pixels may be provided in a pixel area provided by pixel driving lines including a plurality of gate lines and a plurality of data lines, respectively. Each of the plurality of pixels according to an embodiment may include a pixel circuit having at least two thin film transistors and at least one capacitor, and a light emitting device layer emitting light by a current supplied from the pixel ash.

The light emitting element layer disposed on each of the plurality of pixels may include a first electrode connected to a corresponding pixel circuit, a light emitting element disposed on the first electrode, and a second electrode disposed on the light emitting element. As an example, the light emitting device may include an organic light emitting layer or a quantum dot light emitting layer. As another example, the light emitting device may include a micro light emitting diode, but is not limited thereto.

The light emitting device layer according to an embodiment may have an upper light emitting structure or a front light emitting structure in which light emitted from the light emitting device passes through the encapsulation layer 813 and is emitted toward the front member 815. For example, in the light emitting device layer according to the upper light emitting structure (or front light emitting structure), the first electrode may be a reflective electrode, and the second electrode may be a transparent electrode. For example, the first electrode may include a light reflecting material, and the second electrode may include a light transmitting material.

The light emitting device layer according to another embodiment may have a lower light emitting structure or a back light emitting structure in which light emitted from the light emitting device passes through the pixel array substrate 812 and is emitted toward the front member 815. For example, in the light emitting device layer according to the lower light emitting structure (or back light emitting structure), the first electrode may be a transparent electrode, and the second electrode may be a reflective electrode. The first electrode may include a light-transmitting material, and the second electrode may include a light-reflecting material. Without being limited thereto, the light emitting device layer may have a double-sided light emitting structure.

The encapsulation layer 813 is formed on the pixel array substrate 812 to surround the pixel array layer, thereby preventing or blocking oxygen and/or moisture from penetrating the light emitting device of the pixel array layer. The encapsulation layer 813 according to an embodiment may be formed of a multilayer structure in which an organic material layer and an inorganic material layer are alternately stacked, but is not limited thereto. The inorganic material layer may serve to prevent or block oxygen and/or moisture from penetrating the light emitting device. In addition, the organic material layer may be formed to have a relatively thicker thickness than the inorganic material layer to cover particles that may occur during the manufacturing process, but is not limited thereto.

The display panel 810 according to an embodiment may further include a protective substrate disposed on the encapsulation layer 813. The protective substrate (or encapsulation substrate) may be disposed on or coupled to the front surface of the encapsulation layer 813 via a filler or adhesive. As an example, the protective substrate may be made of a transparent material when the light emitting device layer has an upper light emitting structure. As another example, when the light emitting element layer has a lower light emitting structure, the protective substrate may be made of a transparent material, an opaque material, or a metal material. For example, when the light emitting element layer has an upper light emitting structure, the protective substrate may be omitted.

The display panel 810 according to an embodiment may further include a polarizing member 825. The polarizing member 825 may be a polarizing film for preventing or minimizing reflection of external light to improve visibility and contrast ratio of the display panel 810. The polarization member 825 may prevent or minimize reflection of external light by changing external light reflected by the thin film transistor and/or pixel driving lines provided on the pixel array substrate 812 to a circularly polarized state.

14A and 14C, the polarizing member according to an embodiment may be disposed (or attached) on the upper surface of the encapsulation layer 813 through the transparent adhesive member when the light emitting element layer has an upper light emitting structure. have. When the display device 70 has a polarizing member, the protective substrate may be omitted. For example, the transparent adhesive member may include a pressure sensitive adhesive (PSA), an optically clear adhesive (OCA), or an optically clear resin (OCR), but is not limited thereto. As another example, as illustrated in FIGS. 14B and 14D, the polarizing member may be disposed between the front member 815 and the encapsulation layer 813.

The polarizing member according to another embodiment may be disposed (or attached) on the rear surface of the pixel array substrate 812 through the transparent adhesive member when the light emitting element layer has a lower light emitting structure.

The display devices 70, 75, 80, and 85 according to an embodiment may further include a touch unit 814 for sensing a user touch on the front member 10.

The touch unit 814 may include a touch electrode layer. The touch electrode layer may include a plurality of touch electrodes for sensing a user touch. The plurality of touch electrodes may serve as a touch sensor for sensing a user touch according to a mutual capacitance method or a self capacitance method.

The touch unit 814 according to an embodiment may be implemented as a touch panel including a plurality of touch electrodes. For example, the add-on type touch panel may be disposed on or coupled to the encapsulation layer 813 or the polarization member 825 when the light emitting element layer has an upper light emitting structure, and the light emitting element When the layer has a lower light emitting structure, it may be disposed or combined on the back side of the pixel array substrate 812.

The touch unit according to another embodiment may be directly formed on the encapsulation layer 813 according to an in-cell method. For example, the in-cell touch unit may be directly formed on the front surface of the encapsulation layer 813 when the light emitting device layer has an upper light emitting structure.

The display panel 810 according to an embodiment may further include a color filter layer provided on the encapsulation layer 813 so as to overlap each of a plurality of pixels. The light emitting element disposed in each of the plurality of pixels may emit white light. As an example, the color filter layer may be disposed on the encapsulation layer 813 when the light emitting element layer has an upper light emitting structure. As another example, the color filter layer may be disposed in the pixel array layer when the light emitting element layer has a lower light emitting structure.

The display panel 810 according to an embodiment may further include a back plate 816. The back plate 816 may be formed to have the same shape as the pixel array substrate 812. As an example, when the light emitting element layer has an upper light emitting structure, the back plate 816 may be disposed on the rear surface (or back surface) of the pixel array substrate 812 through a transparent adhesive member. As another example, the back plate 816 may be a protective substrate when the light emitting device layer has a lower light emitting structure. For example, the transparent adhesive member may include a pressure sensitive adhesive (PSA), an optically clear adhesive (OCA), or an optically clear resin (OCR), but is not limited thereto.

The back plate 816 may increase the rigidity of the display panel 810 and radiate heat generated from the display panel 810. The back plate 816 according to an embodiment may include a metal material having high thermal conductivity. For example, the back plate 816 may be made of any one of aluminum, copper, silver, and magnesium, or may include an alloy material thereof or a stainless steel material, but is not limited thereto. The back plate 816 may be represented by a heat diffusion sheet, a heat diffusion layer, a heat diffusion plate, a heat sink, a heat radiation sheet, a heat radiation layer, or a heat radiation plate, and is not limited to the term.

14A to 14D, the vibration generating device 700 may be disposed between the display panel 810 and the front member 815. For example, the vibration generating device 700 may be disposed between the front member 815 and the polarizing member 825. For example, the vibration generating device 700 may be disposed on the polarizing member 825. For example, the vibration generating device 700 may be disposed on the encapsulation layer 813. For example, the vibration generating device 700 may be disposed between the front member 815 and the encapsulation layer 813. When the vibration generating device 700 is disposed on the rear surface of the display panel 810, a structure between the display panel 810 and the front member 815, for example, a pixel array substrate 812, an encapsulation layer 813 There was a problem in that the vibration of the vibration generating device 700 could not be output to the display panel 810 due to the like. According to the exemplary embodiment of the present specification, since the vibration generating device 700 is implemented between the display panel 810 and the front member 815, desired vibration can be transmitted to the front member. Since the touch unit 814 is configured to be adjacent to the vibration generator 700, the touch unit 814 can be vibrated by the vibration of the vibration generator 700, thereby effectively implementing haptic vibration.

14C and 14D, the vibration generating device 700 may be configured in the encapsulation layer 813. The encapsulation layer 813 may be a sealing substrate or a second substrate. For example, the vibration generating device 700 may be accommodated in the adhesive included in the encapsulation layer 813. The adhesive may bond the pixel array layer 812 and the second substrate that is the encapsulation substrate that is the encapsulation layer 813. The adhesive may be pressure sensitive adhesive (PSA) or optical clear adhesive (OCA), but is not limited thereto. For example, the adhesive may include an adhesive material such as epoxy, acrylic, silicone, or urethane. The adhesive according to an example may further improve the reliability of the display panel by further including a getter material capable of adsorbing moisture and/or oxygen.

For example, by encapsulating the vibration generating device 700, the encapsulation layer 813 can prevent or minimize vibration performance deterioration (or deterioration in acoustic performance) due to damage and damage to the vibration generating apparatus 700 due to external impact. have.

Accordingly, the display devices 80 and 85 according to another embodiment of the present specification may output haptic vibration in response to a touch or output sound by vibrating according to the driving of the integrated or built-in vibration generating device 700. have. For example, the vibration generator 700 may be an acoustic generator that outputs sound. For example, the vibration generating device 700 may be a haptic device that generates haptic feedback or haptic vibration. The display devices 80 and 85 according to another embodiment of the present specification may be integrated into a sealing substrate which is the vibration generating device 700 and the encapsulation layer 813 to be unified as one component, thereby simplifying the process. Damage to the vibration generating device 700 can be prevented. In addition, the display devices 80 and 85 according to another embodiment of the present specification may be improved in appearance and slim by the vibration generating device 700 being inserted inside the sealing substrate, which is the sealing layer 813, or in the adhesive. Can.

15 is a view showing a display device according to another exemplary embodiment of the present specification. 16 is a cross-sectional view taken along line IV-IV' shown in FIG. 15.

15 and 16, the display device 90 according to another exemplary embodiment of the present specification may include a vibration generating device 700, a touch driving unit 210, and a touch sensor connection unit 212.

The vibration generating device 700 includes a substrate 920 and a plurality of first portions 701 disposed on the substrate 920, and a plurality of second portions 702 disposed between the plurality of first portions 701, respectively. ). Each of the plurality of first portions 701 may include a polygonal pattern. For example, each of the plurality of first portions 701 may be a line pattern having a predetermined width (or spacing), but is not limited thereto. For example, each of the plurality of first portions 701 may have various shapes according to thickness, width, and pitch. Each of the plurality of first portions 701 may be disposed to be spaced apart from each other so as to have a predetermined width (or spacing, size). For example, each of the plurality of first portions 701 may all have the same size, for example, width, area, or volume, within a range of process errors (or tolerances) generated in the manufacturing process.

The first portion 701 may have piezoelectric characteristics, and the second portion 702 disposed between the first portions 702 may have flexibility or transparency. For example, each of the plurality of first portions 701 may include an inorganic material or a piezoelectric material that vibrates by a piezoelectric effect (or piezoelectric characteristic) by an electric field. For example, the plurality of first portions 701 may include an electro active material. In the electroactive material, a potential difference is generated by dielectric polarization due to a change in the relative position of positive (+) and negative (-) ions while pressure or torsion is applied to the crystal structure by external force, and, conversely, an electric field according to applied voltage It has the characteristic of generating vibration. For example, each of the plurality of first portions 701 may be represented by an electroactive portion, an inorganic substance portion, a piezoelectric substance portion, or a vibration portion, but is not limited thereto.

Each of the plurality of first portions 701 may be formed of a ceramic-based material capable of relatively high vibration or a piezoelectric ceramic having a perovskite-based crystal structure. The perovskite crystal structure has a piezoelectric and reverse piezoelectric effect, and may be a plate-shaped structure having orientation. The perovskite crystal structure is represented by the formula of ABOx, A is composed of a divalent metal element, and B can be composed of a tetravalent metal element. For example, A and B can be cations, and O can be anions. For example, it may include a _{PbTiO 3, PbZrO 3, BaTiO 3} , and at least one of SrTiO _3, and, and the like.

The perovskite crystal structure is a central ion due to external stress or magnetic field, for example, PbTiO ₃ , The position of Ti ions is changed, and the polarization may change, resulting in a piezoelectric effect. For example, the perovskite crystal structure is a tetragonal, orthorhombic, unsymmetric structure from a cubic form, which is symmetrical by external stress or magnetic field, and Piezoelectric effect may be generated by changing to a shape such as a rhombohedral. In a phase transition boundary region of a tetragonal and rhombohedral having a structure that is not symmetrical, polarization is high, and rearrangement of the polarization is easy, so it can have high piezoelectric properties.

Inorganic material parts composed of each of the plurality of first portions 701 include lead (Pb), zirconium (Zr), titanium (Ti) zinc (Zn), nickel (Ni), manganese (Mn), and niobium (Nb) It may include one or more, but is not limited thereto.

In another example, the inorganic material being composed each of a plurality of the first portion 701 is part of lead (Pb), zirconium (Zr), and titanium PZT (lead zirconate titanate, PbZrTiO ₃₎ containing (Ti) based material, or PZNN (lead zirconate nickel niobate)-based materials including lead (Pb), zinc (Zn), nickel (Ni), manganese (Mn), and niobium (Nb) may be included, but are not limited thereto. Further, the inorganic material portion may include CaTiO _3, BaTiO _3, SrTiO _3, and at least one that does not contain lead (Pb), but is not limited to such.

Each of the plurality of second portions 702 may include a polygonal pattern. Each of the plurality of second portions 702 may be disposed between the plurality of first portions 701. Each of the plurality of first portions 701 and the plurality of second portions 702 may be arranged (or arranged) side by side in the same plane (or the same layer). Each of the plurality of second portions 702 may be configured to fill a gap between two adjacent first portions 701 to be connected to or bonded to the adjacent first portions 701. For example, each of the plurality of second portions 702 may be configured to have a predetermined width (or size), and may be disposed parallel to each other with the first portion 701 interposed therebetween. Each of the plurality of second portions 702 may all have the same size, for example, width, area, or volume, within a range of process errors (or tolerances) generated in the manufacturing process.

The organic material portion formed in each of the plurality of second portions 702 may be formed of an organic material or an organic polymer having flexible properties compared to the inorganic material portion that is the first portion 701. For example, each of the plurality of second portions 702 may include an organic material, an organic polymer, an organic piezoelectric material, or an organic non-piezoelectric material. For example, each of the plurality of second portions 702 may be expressed as an adhesive portion, an elastic portion, a bending portion, a damping portion, or a flexible portion having transparency or flexibility, but is not limited thereto. Accordingly, in the vibration generating device according to the exemplary embodiment of the present specification, since the plurality of second portions 702 have flexibility, a flexible display device, for example, a curved display curved at a predetermined radius of curvature apparatus, but is not limited to a rollable display apparatus, a rollable display apparatus, a bendable display apparatus, or a wearable display apparatus of a type wound around a wrist. wearable display apparatus). The bendable display device may be an edge bending display device, a bezel bending display device, or an active bending display device, but is not limited thereto.

The organic material part may include at least one of organic piezoelectric materials and organic non-piezoelectric materials. The organic material part including the organic piezoelectric material can improve the overall durability of the vibration generating device 700 by absorbing the impact applied to the inorganic material part (or the first part), and provide a certain level of piezoelectric properties. . For example, the organic piezoelectric material may be an organic material having electroactive properties. For example, polyvinylidene fluoride (PVDF), β-polyvinylidene fluoride (PVDF), polyvinylidene-trifluoroethylene (P(VDF-TrFE)), polyvinylidene-trifluoroethylene (P(PDF)), polyvinylidene-trifluoroethylene-chlorofluoroethylene (P(PDF)), P( VDF-TrFE-CTFE) may include at least one of polyvinylidene-trifluoroethylene-chlorotrifluoroethylene (CNT) doped PVDF polymer, and phosphazene-based polymer, but is not limited thereto. For example, the phosphazene-based polymer may be poly-bis (trifluoroethoxy) phosphazene, but is not limited thereto.

The organic material part containing the organic non-piezoelectric material is composed of a curable resin composition and an adhesive containing the same, thereby absorbing the shock applied to the inorganic material part (or the first part), thereby improving the overall durability of the vibration generating device 700. have. For example, the organic non-piezoelectric material may include at least one of an epoxy-based polymer, an acrylic-based polymer, and a silicone-based polymer, but is not limited thereto. Therefore, the first portion 701 made of an inorganic material and the second portion 702 made of an organic material and having transparency is repeatedly connected alternately to form a thin film, and to the display panel of the display device. The display panel may have a corresponding size or a size in which the display panel can implement a set vibration characteristic or acoustic characteristic.

When the vibration generating device 700 is applied as a touch sensor such as a fingerprint sensor or a force sensor, the first part 701, which is an opaque metal material, is formed in a mesh form or a stripe form in order to improve touch performance and transparency, The height (or thickness) or size (or width) of the first portion 701 may be adjusted to improve visibility and transmittance. The first portion 701 is wire sawing, scribing, blade dicing, laser cutting, stealth dicing, thermal laser separation (TLS), and photoetching It may be patterned by at least one method of the process, but is not limited thereto. In order to implement the vibration generating apparatus 700 having transparency, the size of the second part 702 may be the same as or different from the size of the first part 701. The size 702 of the second portion may be a distance or pitch between the first portion 701 and the first portion 702. For example, the pitch may be 2 to 3 times or more the size of the first portion 701, but is not limited thereto. For example, the size of the second portion 702 may be 2 to 3 times or more of the size of the first portion 701, but is not limited thereto.

As another example, when the vibration generating device 700 is applied to a vehicle device, a portion for blocking light may be configured as a first portion 701 and an opening portion as a second portion 702. Since the second portion 702 is made of an organic material having transparency, the vehicle device described with reference to FIG. 2 can prevent the light from being exposed by external light and can be applied as a light control device. For example, the size of the second portion 702 may be larger than the size of the first portion 701 in order to be implemented as a light control device having transparency. For example, the size of the second portion 702, for example, the pitch may be 2 to 5 times or less the size of the first portion 701, but is not limited thereto. For example, the thickness of the vibration generating device 700 may be 2 to 4 times or less the size of the second portion 702, but is not limited thereto. For example, when the size of the second portion 702 is 20 μm to 80 μm, the thickness of the vibration generator 700 may be 40 μm to 320 μm. For example, when the size (or width) of the first portion 701 is 10 μm to 30 μm or less, the size of the second portion 702 may be configured to be 20 μm to 180 μm. The first portion 701 has a size capable of controlling light, for example, the size of the black matrix of the display device, and the size of the second portion 702 is twice the thickness of the vibration generating device 700 If it is 4 times or less, a vibration generating device having transparency and vibration characteristics (or haptic characteristics) may be provided.

As another example, in order for the vibration generating device 700 to be implemented as a haptic device or a sound generating device, the size of the first part 701 may be larger than the size 702 of the second part. For example, the size of the first portion 701 may be 2 to 6 times or more the size of the second portion 702. For example, when the size of the second portion 702 is 10 μm to 100 μm or less, the size of the first portion 701 may be configured to be 20 μm to 1200 μm.

The first electrode 703 may be disposed on the lower surface of the vibration generating device 700. For example, the first electrode 703 is disposed on the first side (or front side) of the first portion 701 and the second portion 702 and the first side of each of the plurality of first portions 701 It can be electrically connected. For example, the first electrode 703 may be made of a transparent conductive material, a semi-transparent conductive material, or an opaque conductive material. For example, the transparent or translucent conductive material may include indium tin oxide (ITO) or indium zinc oxide (IZO), but is not limited thereto. Opaque conductive materials include aluminum (Al), copper (Cu), gold (Au), nickel (Ni), silver (Ag), molybdenum (Mo), nickel-phosphorus (Ni-P), tungsten (W), platinum ( Pt), magnesium (Mg), silver nanowires (Ag nanowire), CNT (CarbonNanoTube), graphene, PEDOT:PSS(poly(3,4-ethylenedioxythiophene):polystylene sulfonate), etc. And is not limited thereto.

The third electrode 705 may be disposed on the side surface of the first portion 701. For example, the third electrode 705 may be disposed on a side surface of the first portion 701 and an upper surface of a second surface different from the first surface on which the first electrode 701 is disposed. Therefore, since the third electrode 705 is configured on one surface of the first portion 701, light transmittance and vibration characteristics can be improved. The third electrode 705 may be individually connected to the touch sensor connection unit 212. The third electrode 705 may receive a signal according to a signal input from the touch driver 210.

The fourth electrode 707 may be disposed on the other side of the first portion 701. For example, the fourth electrode 707 may be disposed on another side where the third electrode 705 is disposed. In addition, the fourth electrode 707 may be used as a charging electrode of the third electrode 705 by bonding with the first electrode 703.

The third electrode 705 and the fourth electrode 707 may be made of a metal material. For example, the third electrode 705 and the fourth electrode 707 are aluminum (Al), copper (Cu), gold (Au), nickel (Ni), silver (Ag), molybdenum (Mo), nickel- Phosphorus (Ni-P), tungsten (W), platinum (Pt), magnesium (Mg), silver nanowires (Ag nanowire), CNT (CarbonNanoTube), graphene, PEDOT:PSS, etc. It may, but is not limited to this.

The touch driving unit connected to the touch electrode layer of the touch unit of the display panel may be connected to the third electrode 705 of the vibration generating device. For example, the touch driving unit may be connected to the third electrode 705 of the vibration generator 700 by anisotropic film bonding, but is not limited to this method. When a signal is generated in the touch portion of the display panel, the signal may be transmitted to the vibration generating device 700 after the touch driver 210 recognizes the signal. When the vibration generating device 700 receives a signal, the vibration generating device 700 may vibrate according to the signal.

As described in FIG. 4, the vibration generator 700 may further include a protective film. The first passivation layer 142 is disposed on the first electrode 703 and may protect the first surfaces of the first portion 701 and the second portion 702. For example, the first passivation layer may be a polyimide (PI) film or a polyethyleneterephthalate (PET) film, but is not limited thereto.

The second passivation layer 144 is disposed on the second electrode 704 and may protect the second surfaces of the first part 701 and the second part 702. For example, the second passivation layer 144 may be a polyimide (PI) film or a polyethyleneterephthalate (PET) film, but is not limited thereto.

17 is a view showing a transmittance of the vibration generating device according to another embodiment of the present specification.

Referring to FIG. 17, in the vibration generating apparatus of FIGS. 15 and 16, the first portion 701 is composed of PVDF, the size of the first portion 701 is 30 μm, and the second portion 702 is epoxy-based. Configuration and the size of the second portion 702 is 90 μm, and the thickness is 300 μm, and this example is not intended to limit the contents of this specification. In FIG. 17, the horizontal axis represents wavelength (nm), and the vertical axis represents transmittance (%). Transmittance was measured using J&C Tech's JCH300S. The transmittance can be measured by measuring the measured value by reflecting the light collected from the light source through the vibration generator and entering the integrating sphere, and the light separated from the integrating sphere is reflected and collected by the detector. In FIG. 17, the transmittance was indicated as 100% as 1.0.

Referring to FIG. 17, it can be seen that a transmittance of about 60% is exhibited at 400 nm to 800 nm, which is a wavelength range of total light. Therefore, the vibration generating device according to the embodiment of the present specification can provide a vibration generating device with improved transmittance, and thus can be applied as a light control device.

18 is a view showing the acoustic characteristics of the vibration generating device according to another embodiment of the present specification.

Referring to FIG. 18, in the vibration generating apparatus of FIGS. 15 and 16, the first portion 701 is composed of PZT (Lead Zirconate Titanate; PbZrO ₃ )-based ceramic material, and the size of the first portion 701 is 30 μm. , The second part 702 is composed of an epoxy resin series, the size of the second part 702 is 90 μm, and the thickness is 300 μm, and this example is not intended to limit the contents of this specification. In FIG. 18, the horizontal axis represents frequency (Hz), and the y axis represents sound pressure level (SPL, dB). For the sound pressure characteristics, APx525 of Audio Precision was used, and a sine sweep was applied at 200 Hz to 20 kHz, and the sound pressure was measured at a position 10 cm apart from the display panel and vibration generating device.

Referring to FIG. 18, it can be seen that the vibration generating device according to another embodiment of the present specification exhibits sound pressure in a low to high range. Therefore, when the vibration generating device is applied to the display device, it is possible to provide a display device with improved sound pressure. For example, it can be used as a speaker of a display device or a speaker of a vehicle device. For example, the low-end band may be 200 Hz or less, the mid-range band may be 200 Hz to 3 kHz, and the high-end band may be 3 kHz or more, but is not limited thereto.

19 is a view showing a vibration generating device according to another embodiment of the present specification.

Referring to FIG. 19, the vibration generating device 1200 according to another embodiment of the present specification may include a first part 1201 and a second part 1201. The first electrode 1232 and the second electrode 1234 may be disposed on the lower surface and the upper surface of the first part 1201 and the second part 1202. Since the first portion 1201, the second portion 1202, the first electrode 1232, and the second electrode 1234 are the same as those described with reference to FIGS. 15 and 16, a description thereof will be omitted here. A vibration generating device is formed on the substrate, and the horizontal and vertical dimensions of the substrate are 100 mm, respectively, and the thickness is 0.5 mm. The first portion 1201 is a PZT (Lead Zirconate Titanate; PbZrO ₃ )-based ceramic material, the size (or pitch) of the first portion 1201 is 300 μm, and the thickness is 200 μm. The second portion 1202 is composed of an epoxy resin series, and the width (w) of the size of the second portion 1202 is 50 μm. For example, in order to further improve the piezoelectric characteristics, the size of the first portion 1201 is configured to be larger than the size of the second portion 1202. The results of measuring the vibration acceleration are shown in [Table 2] below. The vibration acceleration was measured using NIX equipment from National Instrument. The vibration acceleration can be measured by attaching an acceleration sensor to the vibration generator and applying a voltage to the vibration generator to measure the vibration acceleration output, and is not limited to this method.

[Table 2]

In [Table 2], 75 Hz is a resonance frequency of a glass substrate (100 mm horizontal and vertical), and 183 Hz is a resonance frequency of 12.5 inches of stainless steel. As shown in Table 2, it can be seen that the piezoelectric characteristics are improved when the size of the first portion 1201 is larger than the size of the second portion 1202. For example, it can be seen that when the voltage is 30V, the vibration acceleration is about 10.6G at 75Hz, which is the resonance frequency of the glass substrate. For example, when the voltage is 30V, it can be seen that the vibration acceleration is about 8.3G at 183Hz, which is the resonance frequency of stainless steel. For example, as described in Table 1, the vibration acceleration of the piezoelectric ceramic is about 7G at 30 V or less, and the vibration acceleration of the vibration generator 1200 according to another embodiment of the present specification is about 10.6 at a voltage of 30 V. It can be seen that it is G. Therefore, it can be seen that the vibration generating device according to another embodiment of the present specification exhibits a higher piezoelectric characteristic than the piezoelectric ceramic. For example, it can be seen that the vibration generating device according to another embodiment of the present specification can be used as a speaker of a display device or a speaker of a vehicle device.

20 is a diagram illustrating a vehicle according to another embodiment of the present specification. 1 to 16 and 19 illustrate an example in which the display device according to the exemplary embodiment of the present specification is applied to a vehicle.

Referring to FIG. 20, a vehicle according to an exemplary embodiment of the present specification may include a desi board 1500, an instrument panel module 1600, and an infotainment module 1700.

The desi board 1500 includes a first area DA facing a driver's seat or a driver's seat, a second area PA facing a passenger's seat or a passenger's seat, and a first area DA and a second area PA The third region MA may be included therebetween.

The instrument panel module 1600 may include a first display 1610 disposed in the first area DA of the desi board 1500. The first display 1610 may provide various information, such as vehicle-related information and vehicle-related information, such as driving time, speed, fuel amount, and engine speed of the vehicle.

Since the first display 1610 includes a display device according to an exemplary embodiment of the present specification illustrated in FIGS. 1 to 16 and 19, a duplicate description thereof will be omitted. The first display 1610 may display an image corresponding to driving information of the vehicle provided from the vehicle host system on the display panel. Further, the first display 1610 may output sound generated according to vibration of the display panel interlocked with vibration of the vibration generating device according to the sound driving signal provided from the vehicle host system toward the driver's seat.

The infotainment module 1700 (or infotainment system) may include a second display 1710 disposed in the third area MA (or center fascia) of the desi board 1500.

The second display 1710 is connected to a vehicle convenience system, such as an audio system, an air conditioning system, and a multimedia system mounted in the vehicle, and a navigation system, and is provided from a control icon and a navigation system for controlling the corresponding vehicle convenience system. Navigation information may be displayed, and sound corresponding to an acoustic signal provided from an audio system and/or a multimedia system may be provided to a vehicle occupant.

Since the second display 1710 includes the display device according to the exemplary embodiment of the present specification illustrated in FIGS. 1 to 16 and 19, a duplicate description thereof will be omitted. The second display 1710 may display a control icon for controlling the vehicle convenience system and navigation information provided from the navigation system on the display panel. Further, the second display 1710 may directly output sound generated from a display panel that vibrates in response to vibration of the vibration generating device by an audio signal from an audio system and/or a multimedia system. Also, the second display 1710 may recognize a user touch through a touch electrode layer disposed on the display panel and perform an interface with the user.

The second display 1710 may have an extended length toward the second area PA of the desi board 1500. For example, the second display 1710 may be disposed over the third area MA and the second area PA of the desir board 1500.

Accordingly, the vehicle according to the embodiment of the present specification is manufactured by including the instrument panel module 1600 having the first display 1610 to which the display device according to the embodiment of the present specification shown in FIGS. 1 to 16 and 19 is applied. 1 The sound generated according to the vibration of the display 1610 is output to the driver's face and can be directly transmitted to the driver's ear, and through this, the sound substantially close to the original sound can be transmitted to the driver. For example, when the vibration generating device according to the embodiment of the present specification shown in FIG. 19 is disposed on the first display 1610, a display device including haptics and speakers may be provided.

In addition, the vehicle according to an embodiment of the present specification is a display device according to an embodiment of the present disclosure shown in FIGS. 1 to 16 and 19 includes an infotainment module 1700 having a second display 1710 2 The sound generated according to the vibration of the display 1710 may be output to the ears of the driver and/or the vehicle occupant, thereby providing a sound substantially close to the original sound to the driver and/or the vehicle occupant. In addition, when the vibration generating device according to the embodiment of the present specification shown in FIGS. 4, 9, 10, and 16 is disposed on the second display 1710, haptics, speakers, and anti-reflection functions may be included. It is possible to provide a display device capable of.

In addition, the vehicle according to an embodiment of the present specification may use each of the first display 1610 of the dashboard module 1600 and the second display 1710 of the infotainment module 1700 as speakers and/or haptics for sound output. In addition, two-dimensional stereophonic sound may be transmitted to a driver and/or a vehicle occupant through sounds generated according to vibrations of the first and second displays 1610 and 1710, respectively.

21 is a view showing a vehicle according to another embodiment of the present specification, which is a change in the structure of the infotainment module shown in FIG. 20. In the following description, redundant descriptions of the same components except for the infotainment module and related components will be simplified or omitted.

Referring to FIG. 21, the infotainment module 1700 according to the exemplary embodiment of the present specification may be installed to be elevated in the third area MA of the desi board 1500. The infotainment module 1700 is accommodated or accommodated in the interior of the desi board 1500 according to the power-off of the vehicle or the operation of the vehicle occupant, and protrudes on the desi board 1500 according to the power-on of the vehicle or the operation of the vehicle occupant. Can.

The infotainment module 1700 according to an embodiment may include a second display 1710 and a display elevating unit.

Since the second display 1710 is substantially the same as the second display illustrated in FIG. 20, redundant description thereof will be omitted.

The display elevating unit is disposed inside the third area MA of the desi board 1500 to support the second display 1710 so as to be elevable. For example, the display elevating unit may protrude onto the desi board 1500 by raising the second display 1710 according to the operation of the vehicle occupant or when the vehicle is powered on. In addition, the display elevating unit may lower the second display 1710 according to the power-off of the vehicle or the operation of the vehicle occupant, and may be accommodated or accommodated in the interior of the desi board 1500. And, when the vibration generating device according to the embodiment of the present specification shown in Figures 4, 9, 10, and 16 on the second display 1710, haptic, speaker (or sound generating device), and It is possible to provide a display device that may include an anti-reflection function. Therefore, the vehicle according to another embodiment of the present specification may have the same or similar effect to the vehicle illustrated in FIG. 20.

22 is a view showing a vehicle according to another embodiment of the present specification, which is a configuration change of the infotainment module shown in FIG. 21. In the following description, redundant descriptions of the same components except for the infotainment module and related components will be simplified or omitted.

Referring to FIG. 22, the infotainment module 1700 according to the exemplary embodiment of the present disclosure includes a second display 1710 and a second display 1710 that are installed to be elevated in the third area MA of the desi board 1500. A display elevating unit for elevating, and a third display 1730 installed in the second area PA of the desir board 1500 may be included.

Since each of the second display 1710 and the display elevating unit is substantially the same as each of the second display and display elevating unit illustrated in FIG. 21, redundant description thereof will be omitted.

The third display 1730 may share the function of the second display 1710. For example, the third display 1730 is connected to a vehicle convenience system, such as an audio system, an air conditioning system, and a multimedia system mounted inside the vehicle, and a navigation system, and a control icon and navigation for controlling the corresponding vehicle convenience system The navigation information provided from the system may be displayed, and sound corresponding to the sound signal provided from the audio system and/or multimedia system may be provided to the passenger in the passenger seat of the vehicle. In addition, the third display 1730 may transmit and receive image information or sound information through wireless communication with the wireless communication device of the passenger in the passenger seat, and display the received image information on the display panel.

Since the third display 1730 includes the display device according to the exemplary embodiment of the present specification illustrated in FIGS. 1 to 16 and 19, a duplicate description thereof will be omitted. For example, when the vibration generating device according to the embodiment of the present specification shown in FIGS. 4, 9, 10, and 16 is disposed on the third display 1730, haptics, speakers, and anti-reflection functions are provided. It is possible to provide a display device that can be included. As another example, when the vibration generating device according to the embodiment of the present specification shown in FIG. 19 is disposed on the third display 1730, a display device including haptics and speakers may be provided.

The third display 1730 may have an extended length toward the third area MA of the desi board 1500. For example, the third display 1730 may be disposed over the second area PA and the third area MA of the desiccant board 1500.

Each of the first display 1610 of the instrument panel module 1600 and the second and third displays 1710, 1730 of the infotainment module 1700 is a speaker (or sound generating device) for sound output and/or haptic vibration in a vehicle. ) And/or haptics (or haptic devices).

Accordingly, the vehicle according to another embodiment of the present specification may have the same or similar effect to the vehicle illustrated in FIG. 20, and the second and first of the first display 1610 of the dashboard module 1600 and the infotainment module 1700 Each of the third displays 1710 and 1730 may be used as a speaker for sound output, and the three-channel stereo sound may be operated through sounds generated according to the vibrations of the first to third displays 1610, 1710, and 1730, respectively. And/or to the vehicle occupant. For example, when the vibration generating device according to the embodiment of the present specification shown in FIGS. 4, 9, 10, and 16 is disposed on the second display 1710 and the third display 1730, the haptic device , A sound generating device, and a display device that may include an anti-reflection function.

23 is a view showing a vehicle according to another embodiment of the present specification, which is a change in the configuration of the infotainment module shown in FIG. 20. In the following description, redundant descriptions of the same components except for the infotainment module and related components will be simplified or omitted.

Referring to FIG. 23, the infotainment module 1700 according to the exemplary embodiment of the present specification includes a fourth display 1750 disposed on a rear surface of a driver's seat (or driver's seat) 1800, and a passenger seat (or passenger seat) 1900 A fifth display 1770 disposed on the rear surface of the screen may be further included.

The fourth display 1750 may be disposed or embedded in the headrest of the driver's seat 1800, and the fifth display 1770 may be disposed or embedded in the headrest of the passenger seat 1900.

Each of the fourth and fifth displays 1750 and 1770 includes a display device according to an exemplary embodiment of the present specification illustrated in FIGS. 1 to 16 and 19, so a duplicate description thereof will be omitted.

Each of the fourth and fifth displays 1750 and 1770 may share the function of the second display 1710. In addition, each of the fourth and fifth displays 1750 and 1770 can transmit and receive image information or sound information through wireless communication with a wireless communication device of a passenger in the rear seat, and display the received image information on a display panel. have.

Each of the first display 1610 of the instrument panel module 1600 and the second, fourth, and fifth displays 1710, 1750, 1770 of the infotainment module 1700 are used for acoustic output and/or haptic vibration in the vehicle. It can be used as a speaker (or sound generating device) and/or a haptic (or haptic device).

Therefore, the vehicle according to another embodiment of the present specification may have the same or similar effect to the vehicle illustrated in FIG. 20, the first display 1610 of the instrument panel module 1600 and the second of the infotainment module 1700, Each of the fourth and fifth displays 1710, 1750, and 1770 may be used as a speaker (or sound generating device) and/or a haptic (or haptic device) for sound output and/or haptic vibration. The second, fourth, and fifth displays 1610, 1710, 1750, and 1770 may transmit stereoscopic sound including four channels to a driver and/or a vehicle occupant through sound generated according to each vibration.

As another example, in a vehicle according to another embodiment of the present specification, the second display 1710 of the infotainment module 1700 is elevated on the third area MA of the desi board 1500 as shown in FIG. 21. It can be installed as possible. In addition, the infotainment module 1700 may further include a third display 1730 shown in FIG. 22. In this case, at least one of the first display 1610 of the instrument panel module 1600 and the second to fifth displays 1710, 1730, 1750, 1770 of the infotainment module 1700 for sound output and/or haptic vibration It can be used as a speaker (or sound generating device) and/or a haptic (or haptic device), depending on the vibration of the display panel included in at least one of the first to fifth displays 1610, 1710, 1730, 1750, 1770 The generated sound may be transmitted to the driver and/or the vehicle occupant. For example, when the vibration generating device according to the embodiment of the present specification shown in FIGS. 4, 9, 10, and 16 is disposed on the second and third displays 1710, 1730, haptics, speakers, And a display device that may include an anti-reflection function. For example, when the display device according to the embodiment of the present specification shown in FIG. 19 is disposed on the first, fourth, and fifth displays 1610, 1750, and 1770, haptics and speakers may be included. A display device can be provided.

FIG. 24 is a view showing a vehicle according to another embodiment of the present specification, which further configures a speaker inside the vehicle shown in any one of FIGS. 20 to 23. In the following description, redundant descriptions of the same components except for a separate speaker and related components will be simplified or omitted.

The interior of the vehicle has a problem in that reverberation is severe and the desired sound is difficult to output due to a large number of curves in which sound waves collide. Accordingly, when a display device according to an exemplary embodiment of the present disclosure is configured in a vehicle interior or in a vehicle body, a speaker disposed in the vehicle may be implemented in a small size, and there is an advantage in implementing a vehicle with improved sound.

Referring to FIG. 24, a vehicle according to another embodiment of the present specification includes a desi board speaker (DBS), a left front door speaker (LFS), a right front door speaker (RFS), a left rear door speaker (LRS), and a right rear door At least one of a speaker RRS and a rear deco speaker RDS may be further included.

The desi board speaker DBS includes at least one of a first desi board speaker DBS1 disposed on the left edge of the desi board 1500 and a second desi board speaker DBS2 disposed on the right edge of the desi board 1500. It may include. For example, each of the first desir board speaker DBS1 and the second desir board speaker DBS2 outputs a sound of 20 kHz at 150 Hz having a mid-range or full-range. It can be a speaker.

The left front door speaker LFS may include at least one of the first to third left front speakers LFS1, LFS2, and LFS3.

The first left front speaker LFS1 may be disposed on a first portion of the left front door adjacent to the desi board. The second left front speaker LFS2 may be disposed in the middle portion of the left front door. The third left front speaker LFS3 may be disposed in a second portion of the left front door adjacent to the left rear door. For example, the first left front speaker LFS1 may be a display panel speaker implemented with the display device illustrated in FIGS. 1 to 16 and 19. In this case, the left front speaker can output sound through vibration of the display panel, and can also function as a left side mirror that displays an image from the left rear camera disposed on the left side of the vehicle.

The right front door speaker (RFS) may include at least one of the first to third right front speakers (RFS1, RFS2, RFS3).

The first right front speaker RFS1 may be disposed on the first portion of the right front door adjacent to the desi board. The second right front speaker RFS2 may be disposed in the middle portion of the right front door. The third right front speaker RFS3 may be disposed on the second portion of the right front door adjacent to the right rear door. For example, the first right front speaker RFS1 may be a display panel speaker implemented with the display device shown in FIGS. 1 to 16 and 19. In this case, the right front speaker can output sound through vibration of the display panel, and can also function as a right side mirror that displays an image from the right rear camera disposed on the right side of the vehicle.

Each of the first left front speaker LFS1 and the first right front speaker RFS1 may be a speaker that outputs a sound of 20 kHz at 150 Hz having a mid-range or full-range. . The sound output from each of the first left front speaker LFS1 and the first right front speaker RFS1 may be combined and output.

Each of the second left front speaker LFS2 and the second right front speaker RFS2 may be a tweeter or a speaker outputting 2kHz to 20kHz sound. The sound output from the first and second left front speakers LFS1 and LFS2 and the first and second right front speakers RFS1 and RFS2 may be combined and output.

Each of the third left front speaker LFS3 and the third right front speaker RFS3 may be one of a woofer, a mid-woofer, and a sub-woofer, and the mid- It may be a speaker that outputs a sound of 150 kHz to 20 kHz having a mid-range or full-range. The sound output from each of the third left front speaker LFS3 and the third right front speaker RFS3 may be combined and output.

The left rear door speaker LRS may include at least one of the first to third left rear speakers LRS1, LRS2, and LRS3.

The first left rear speaker LRS1 may be disposed in a first portion of the left rear door adjacent to the left front door. The second left rear speaker LRS2 may be disposed in the middle portion of the left rear door. The third left rear speaker LRS3 may be disposed on the second portion of the left rear door adjacent to the rear decor RD.

The right rear door speaker RRS may include at least one of the first to third right rear speakers RRS1, RRS2, and RRS3.

The first right rear speaker RRS1 may be disposed in a first portion of the right rear door adjacent to the right front door. The second right rear speaker RRS2 may be disposed in the middle portion of the right rear door. The third right rear speaker RRS3 may be disposed in the second portion of the right rear door adjacent to the rear deco RD.

Each of the first left rear speaker LRS1 and the first right rear speaker RRS1 may be a tweeter or a speaker outputting 2kHz to 20kHz sound. The sound output from each of the first left rear speaker LRS1 and the first right rear speaker RRS1 may be combined and output.

Each of the second left rear speaker LRS2 and the second right rear speaker RRS2 may be a speaker that outputs a sound of 20 kHz at 150 Hz having a mid-range or full-range. . The sound output from the first and second left rear speakers LRS1 and LRS2 and the first and second right rear speakers RRS1 and RRS2 may be combined and output.

Each of the third left rear speaker LRS3 and the third right rear speaker RRS3 may be one of a woofer, a mid-woofer, and a sub-woofer, and the mid- It may be a speaker that outputs a sound of 150 kHz to 20 kHz having a mid-range or full-range. The sound output from each of the third left rear speaker LRS3 and the third right rear speaker RRS3 may be combined and output.

The rear deco speaker RDS includes a first rear deco speaker RDS1 disposed on the left edge of the rear deco RD, a second rear deco speaker RDS2 disposed on the right edge of the rear deco RD, and a rear deco. It may include at least one of the third rear deco speaker (RDS3) disposed in the middle of (RD).

Each of the first rear deco speaker RDS1 and the second rear deco speaker RDS2 may be a speaker that outputs a sound of 20 kHz at 150 Hz having a mid-range or full-range. .

The third rear deco speaker (RDS3) includes one of a woofer, a mid-woofer, and a sub-woofer, a speaker outputting sound of 60 Hz to 150 Hz, and at least one tweeter ( tweeter), or 2kHz to 20kHz sound output speaker.

Based on the direction of looking at the windshield of the vehicle, the speakers disposed on the left and right sides may be configured symmetrically. For example, the frequency of the sound output from the speaker disposed on the left side of the vehicle may be at least one of 150 Hz to 20 kHz and 2 kHz to 20 kHz, and the frequency output from the vibration generating device disposed on the right side of the vehicle is 150 Hz to 20 kHz. And 2 kHz to 20 kHz. When the speaker is configured as described above, the stereoscopic sense of sound output from the left and right sides of the vehicle may be improved.

Accordingly, the vehicle according to another embodiment of the present disclosure includes at least one of the first display 1610 of the dashboard module 1600 and the second to fifth displays 1710, 1730, 1750, 1770 of the infotainment module 1700. It can be used as a speaker for sound output and outputs sound generated by vibration of the display panel included in at least one of the first to fifth displays 1610, 1710, 1730, 1750, and 1770, and at the same time, a desi board ( 1500) and rear decor (RD) and outputting sound from at least one speaker disposed in at least one of the left and right doors to provide multi-channel surround stereo sound to a driver and/or a vehicle occupant.

The vibration generating device according to the embodiment of the present specification can be applied to the vibration generating device disposed on the display device. The display device according to the embodiment of the present specification includes a mobile device, a video phone, a smart watch, a watch phone, a wearable apparatus, a foldable apparatus, and a rollable apparatus. apparatus), bendable apparatus, flexible apparatus, curved apparatus, electronic notebook, e-book, portable multimedia player (PMP), personal digital assistant (PDA), MP3 player, mobile Medical devices, desktop PCs, laptop PCs, netbook computers, workstations, navigation, car navigation, car display devices, car devices, theater devices, televisions, wallpapers ( wallpaper) devices, signage devices, game devices, laptops, monitors, cameras, camcorders, and home appliances. And, the vibration generating device of the present specification can be applied to an organic light emitting device or an inorganic light emitting device. When the vibration generating device is applied to the lighting device, it can serve as a lighting and speaker.

A vibration generating device according to an embodiment of the present specification, a display device including the same, and a vehicle may be described as follows.

The vibration generating apparatus according to the embodiment of the present specification includes a piezoceramic part disposed at regular intervals, a piezoelectric material layer disposed between the piezoelectric ceramic parts, an electrode part providing an electric field to at least one of the piezoceramic part and the piezoelectric material layer. Can be configured.

According to some embodiments of the present disclosure, the piezoceramic portions are spaced apart while having a constant pitch P, and a plurality of piezoceramic portions disposed in a first direction while having a first width W and a first thickness T The electrode part may include a first electrode provided on a first surface of each of the piezoelectric ceramic parts, and a second electrode provided on a second surface of each of the piezoelectric ceramic parts.

According to some embodiments of the present specification, the electrode part may further include a third electrode disposed on one side of the piezoelectric ceramic part and the piezoelectric material layer, which is electrically connected to the second electrode.

According to some embodiments of the present specification, the first electrode may be disposed on the first side and upper surface of each piezoceramic portion, and the second electrode may be disposed on the second side of each piezoceramic portion.

According to some embodiments of the present specification, the pitch P of the plurality of piezoelectric ceramic parts is greater than the first width W of each of the piezoelectric ceramic parts, and the first thickness T of each of the piezoelectric ceramic parts is greater than the pitch P It can be big.

According to some embodiments of the present specification, the first width (W) of the piezoelectric ceramic portion is 30 μm or less, the pitch (P) is 2 times or more and 5 times or less of the first width (W), and the first thickness (T) is the pitch It may be 2 times or more and 4 times or less of (P).

According to some embodiments of the present specification, a piezoelectric ceramic portion and a protective layer disposed on one or more of the upper and lower front surfaces of the piezoelectric material layer may be further included.

According to some embodiments of the present specification, the piezoceramic portions are disposed with a constant width in a lattice shape, and the piezoelectric material layers are disposed between the piezoelectric ceramic portions, and the electrode portions are respectively disposed on the upper and lower surfaces of the piezoelectric ceramic portions and the piezoelectric material layers. It may include a first electrode and a second electrode disposed.

According to some embodiments of the present disclosure, the piezoelectric ceramic portions are spaced apart while having a pitch P, have a first width W and a first thickness T, and include a plurality of piezoelectric ceramic portions disposed in a first direction The electrode portion may include a first electrode and a second electrode disposed on upper and lower surfaces of the piezoelectric ceramic portion and the piezoelectric material layer, respectively.

According to some embodiments of the present specification, the piezoelectric ceramic portion has piezoelectric properties, and may be one of an opaque piezoelectric ceramic material and a piezoelectric ceramic fiber.

According to some embodiments of the present specification, the piezoelectric material layer is PVDF (polyvinylidene fluoride), P(VDF-TrFE) (polyvinylidene fluoride-co-trifluoroethylene), relaxed ferroelectric polymer, P(VDF-TrFe-CFE), P( VDF-TrFE-CTFE), CNT, doped PVDF polymer, poly bis (trifluoroethoxy) may include one or more of phosphazene (phosphazene).

According to some embodiments of the present specification, the vibration generating device further includes a driving unit, and the driving unit may receive a touch signal from the touch driving unit and receive a tooth signal to apply power to the electrode unit of the vibration generating device.

The display device according to the exemplary embodiment of the present specification includes an organic light emitting display panel including a thin film transistor substrate, a piezoelectric ceramic portion disposed at regular intervals, a piezoelectric material layer disposed between the piezoelectric ceramic portions, and It may include a vibration generating device including an electrode portion for providing an electric field to one or more of the piezoelectric ceramic portion and the piezoelectric material layer.

According to some embodiments of the present specification, the display device further includes a touch driving unit that senses a user's touch input, and a driving unit that controls driving of the vibration generating device, and the driving unit receives a touch input signal from the touch driving unit to the LCD panel. And receiving the touch input signal to apply power to the electrode portion of the vibration generating device.

The display device according to the exemplary embodiment of the present specification includes a liquid crystal display panel including a thin film transistor substrate, a backlight providing a backlight to the liquid crystal display panel, and a backlight and a liquid crystal display panel, between an upper surface of the liquid crystal display panel and a lower surface of the liquid crystal display panel. A vibration generating device including at least one piezoelectric ceramic portion disposed at regular intervals, a piezoelectric material layer disposed between piezoelectric ceramic portions, and an electrode portion providing an electric field to at least one of the piezoelectric ceramic portion and the piezoelectric material layer. It can contain.

According to some embodiments of the present specification, the display device further includes a touch driving unit that senses a user's touch input, and a driving unit that controls driving of the vibration generating device, and the driving unit inputs touch from the touch driving unit to the organic light emitting display panel. A signal may be received, and the touch input signal may be received to apply power to the electrode portion of the vibration generating device.

The display device according to the exemplary embodiment of the present specification includes a display panel for displaying an image, and a vibration generating device disposed in the display panel, wherein the vibration generating device includes a plurality of first portions and a plurality of first portions having piezoelectric characteristics. It may include a plurality of second portions disposed between, and at least one electrode disposed on the plurality of first portions and the plurality of second portions.

According to some embodiments of the present specification, the first portion may be an inorganic material, and the second portion may be an organic material.

According to some embodiments of the present specification, the plurality of first portions and the plurality of second portions are arranged side by side in the same plane, and the sizes of the plurality of first portions and the sizes of the plurality of second portions may be different from each other.

According to some embodiments of the present specification, a vibration generating device having a size of a plurality of first parts larger than a size of a plurality of second parts may be implemented as an acoustic generating device or a haptic device of a display panel.

According to some embodiments of the present specification, a vibration generating device having a size of a plurality of first parts smaller than a size of a plurality of second parts may be implemented as a light control device of a display panel.

According to some embodiments of the present specification, the display panel further includes a backlight providing a light source, and the vibration generating device may be disposed between the backlight and the display panel, and on one or more of the lower surface of the display panel.

According to some embodiments of the present specification, the display device further includes a touch driver for sensing a user's touch input, and a driver for controlling the driving of the vibration generating device, and the driver receives a touch input signal from the touch driver to the display panel. When receiving and receiving a touch input signal, power may be applied to at least one electrode.

According to some embodiments of the present specification, a touch unit disposed on an upper surface of the display panel and a front member disposed on the touch unit may be further included, and the vibration generating device may be disposed between the display panel and the touch unit.

According to some embodiments of the present specification, a polarizing member disposed between the vibration generating device and the display panel may be further included.

According to some embodiments of the present specification, a polarizing member disposed on an upper surface of the touch unit may be further included.

According to some embodiments of the present specification, the at least one electrode may include a first electrode disposed on the lower surface of the vibration generating device, and a second electrode disposed on the upper surface of the vibration generating device.

According to some embodiments of the present specification, the at least one electrode is provided on the first electrode disposed on the lower surface of the vibration generating device, the third electrode provided on the first surface of the first portion, and the second surface of the first portion. And, it may further include a fourth electrode connected to the first electrode.

According to some embodiments of the present specification, the display panel includes a pixel array substrate and a second substrate disposed on the pixel array substrate, and the vibration generating device may be disposed in the second substrate.

According to some embodiments of the present specification, the first portion is disposed in a lattice shape, and at least one electrode includes a first electrode disposed on a lower surface of the vibration generating device, and a second electrode disposed on an upper surface of the vibration generating device. can do.

According to some embodiments of the present specification, the first portion has a first size and is disposed to extend in a first direction, and at least one electrode is a first electrode disposed on a lower surface of the vibration generating device, and a top surface of the vibration generating device It may include a second electrode disposed on.

A vehicle according to an embodiment of the present disclosure includes a first area facing the driver's seat, a second area facing the passenger seat, and a third area between the first area and the second area, and the first area of the desi board. Instrument panel module with one display, a second display disposed in a third area of the desi board, a third display disposed in a second area of the desi board, a fourth display disposed in the rear of the driver's seat, and arranged in the rear of the passenger seat An infotainment module having at least one of a fifth display, wherein any one of the first to fifth displays includes a plurality of first portions having piezoelectric characteristics, a plurality of second portions disposed between the plurality of first portions; And a display device having a vibration generating device including electrodes disposed on one of the plurality of first portions and the plurality of second portions.

According to some embodiments of the present specification, one of the second display and the third display may have a vibration generating device in which the sizes of the plurality of first portions are smaller than the sizes of the plurality of second portions.

According to some embodiments of the present specification, one of the first display, the fourth display, and the fifth display may have a vibration generating device having a size of a plurality of first portions larger than a size of the plurality of second portions.

According to some embodiments of the present specification, further comprising a left front door, a right front door, a left rear door, a right rear door, and a rear deco, at least one desi board speaker disposed on the desi board, disposed on the left front door At least one left front door speaker, at least one right front door speaker disposed on the right front door, at least one left rear door speaker disposed on the left rear door, and at least one right rear door speaker disposed on the right rear door , And at least one rear deco speaker disposed in the rear deco.

According to some embodiments of the present specification, the at least one speaker may include a display device having a vibration generating device.

The embodiments of the present specification have been described in more detail with reference to the accompanying drawings, but the present specification is not necessarily limited to these embodiments, and may be variously modified within the scope of the technical idea of the present specification. . Therefore, the embodiments disclosed in the present specification are not intended to limit the technical spirit of the present specification, but to explain, and the scope of the technical spirit of the present specification is not limited by these embodiments. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive. The scope of protection of the present specification should be interpreted by the claims, and all technical spirits within the equivalent scope should be interpreted as being included in the scope of the present specification.

50, 70, 75, 80, 85: display device
10, 10', 300, 600: display panel
20, 100, 700, 1100, 2100: vibration generator
132, 134, 136, 1132, 1134, 703, 704, 705, 707: electrode

Claims (36)

Piezoceramic parts arranged at regular intervals;
A piezoelectric material layer disposed between the piezoelectric ceramic parts; And
And an electrode portion providing an electric field to at least one of the piezoelectric ceramic portion and the piezoelectric material layer. According to claim 1,
The piezoelectric ceramic portion is spaced apart while having a constant pitch, and includes a plurality of piezoceramic portions having a first width and a first thickness and disposed in a first direction,
The electrode unit includes a first electrode provided on a first surface of each of the piezoelectric ceramic units, and a second electrode provided on a second surface of each of the piezoelectric ceramic units. According to claim 2,
The electrode portion is electrically connected to the second electrode, and further comprising a third electrode disposed on the front surface of one side of the piezoelectric ceramic portion and the piezoelectric material layer, the vibration generating device. According to claim 2,
The first electrode is disposed on the first side and the top surface of each of the piezoelectric ceramic parts,
The second electrode is disposed on the second side of each of the piezoelectric ceramic portion, vibration generating device. According to claim 2,
The pitch of the plurality of piezoelectric ceramic parts is greater than the first width of each of the piezoelectric ceramic parts, and the first thickness of each of the piezoelectric ceramic parts is greater than the pitch, the vibration generating device. The method of claim 5,
The first width of the piezoelectric ceramic portion is 30 μm or less, the pitch is 2 times or more and 5 times or less of the first width, and the first thickness is 2 times or more and 4 times or less of the pitch. According to claim 1,
And a protective layer disposed on one or more of the piezoelectric ceramic portion and the piezoelectric material layer upper front and lower front surfaces. According to claim 1,
The piezoelectric ceramic portion is arranged while having a constant width in a lattice shape,
The piezoelectric material layer is disposed between the piezoelectric ceramic parts,
The electrode portion includes a first electrode and a second electrode disposed on upper and lower surfaces of the piezoelectric ceramic portion and the piezoelectric material layer, respectively. According to claim 1,
The piezoelectric ceramic portion is spaced apart while having a pitch, has a first width (W) and a first thickness, and includes a plurality of piezoelectric ceramic portions disposed in a first direction,
The electrode portion includes a first electrode and a second electrode disposed on upper and lower surfaces of the piezoelectric ceramic portion and the piezoelectric material layer, respectively. According to claim 1,
The piezoelectric ceramic portion has a piezoelectric characteristic, and is one of opaque piezoelectric ceramic materials and piezoelectric ceramic fibers, vibration generating device. According to claim 1,
The piezoelectric material layer is PVDF (polyvinylidene fluoride), P(VDF-TrFE) (polyvinylidene fluoride-co-trifluoroethylene), relaxed ferroelectric polymer, P(VDF-TrFe-CFE), P(VDF-TrFE-CTFE), CNT (carbon nanotube), doped PVDF polymer, poly bis (trifluoroethoxy) containing at least one of phosphazene, vibration generating device. According to claim 1,
The vibration generating device further includes a driving unit,
The driving unit receives a touch signal from the touch driving unit, and receives the touch signal to apply power to the electrode unit of the vibration generating device, a vibration generating device. A liquid crystal display panel including a thin film transistor substrate;
A backlight providing a light source to the liquid crystal display panel; And
A piezoelectric ceramic portion disposed between at least one of the backlight and the liquid crystal display panel, an upper surface of the liquid crystal display panel, and a lower surface of the liquid crystal display panel, and disposed between the piezoelectric ceramic portions and the piezoelectric ceramic layers; And a vibration generating device including an electrode portion providing an electric field to at least one of the piezoelectric ceramic portion and the piezoelectric material layer. The method of claim 13,
The display device includes a touch driver that senses a user's touch input; And
Further comprising a driving unit for controlling the driving of the vibration generating device,
The driving unit receives a touch input signal from the touch driving unit to the liquid crystal display panel, and receives the touch input signal to apply power to the electrode unit of the vibration generating device. An organic light emitting display panel including a thin film transistor substrate; And
A piezoelectric ceramic portion disposed in the organic light emitting display panel and disposed at regular intervals, a piezoelectric material layer disposed between the piezoelectric ceramic portions, and an electrode portion providing an electric field to at least one of the piezoelectric ceramic portion and the piezoelectric material layer A display device comprising a vibration generating device. The method of claim 15,
The display device includes a touch driver that senses a user's touch input; And
Further comprising a driving unit for controlling the driving of the vibration generating device,
The driving unit receives a touch input signal from the touch driving unit to the organic light emitting display panel, and receives the touch input signal to apply power to the electrode unit of the vibration generating device. A display panel for displaying an image; And
It includes a vibration generating device disposed in the display panel,
The vibration generating device,
A plurality of first portions having piezoelectric properties;
A plurality of second portions disposed between the plurality of first portions; And
And at least one electrode disposed on the plurality of first portions and the plurality of second portions. The method of claim 17,
The first part is an inorganic material, and the second part is an organic material. The method of claim 17,
The plurality of first portions and the plurality of second portions are arranged side by side on the same plane, and the sizes of the plurality of first portions and sizes of the plurality of second portions are different. The method of claim 19,
The vibration generating device having a size of the plurality of first parts larger than the size of the plurality of second parts is implemented as an acoustic generating device or a haptic device of the display panel. The method of claim 19,
The vibration generating apparatus having a size of the plurality of first portions smaller than that of the plurality of second portions is implemented as an optical control device of the display panel. The method of claim 17,
Further comprising a backlight providing a light source to the display panel,
The vibration generating device is disposed between the backlight and the display panel, and at least one of a lower surface of the display panel. The method of claim 22,
The display device includes a touch driver that senses a user's touch input; And
Further comprising a driving unit for controlling the driving of the vibration generating device,
The driving unit receives a touch input signal from the touch driving unit to the display panel, and applies power to the at least one electrode when the touch input signal is received. The method of claim 17,
A touch unit disposed on an upper surface of the display panel; And
Further comprising a front member disposed on the touch unit,
The vibration generating device is disposed between the display panel and the touch unit, a display device. The method of claim 24,
And a polarizing member disposed between the vibration generating device and the display panel. The method of claim 24,
And a polarizing member disposed on an upper surface of the touch unit. The method of claim 17,
The at least one electrode,
A first electrode disposed on a lower surface of the vibration generating device; And
And a second electrode disposed on an upper surface of the vibration generating device. The method of claim 17,
The at least one electrode,
A first electrode disposed on a lower surface of the vibration generating device;
A third electrode provided on the first surface of the first portion; And
A display device provided on a second surface of the first portion and further comprising a fourth electrode connected to the first electrode. The method of claim 17,
The display panel includes a pixel array substrate and a second substrate disposed on the pixel array substrate,
The vibration generating device is disposed within the second substrate. The method of claim 17,
The first portion is arranged in a grid,
The at least one electrode,
A first electrode disposed on a lower surface of the vibration generating device; And
And a second electrode disposed on an upper surface of the vibration generating device. The method of claim 17,
The first portion has a first size and is arranged to extend in a first direction,
The at least one electrode,
A first electrode disposed on a lower surface of the vibration generating device; And
And a second electrode disposed on an upper surface of the vibration generating device. A desi board having a first area facing the driver's seat, a second area facing the passenger seat, and a third area between the first area and the second area;
An instrument panel module having a first display disposed in a first area of the desi board; And
A second display disposed on a third area of the desi board, a third display disposed on a second area of the desi board, a fourth display arranged on the back of the driver's seat, and a fifth display arranged on the back of the passenger seat It includes at least one of the infotainment module,
Any one of the first to fifth displays may include a plurality of first portions having piezoelectric characteristics; A plurality of second portions disposed between the plurality of first portions; And a display device having a vibration generating device comprising electrodes disposed on one of the plurality of first parts and the plurality of second parts. The method of claim 32,
A vehicle in which one of the second display and the third display is provided with a vibration generating device in which the sizes of the plurality of first portions are smaller than the sizes of the plurality of second portions. The method of claim 32,
A vehicle in which one of the first display, the fourth display, and the fifth display has a vibration generating device having a size larger than that of the plurality of second portions. The method of claim 32,
Further comprising a left front door, a right front door, a left rear door, a right rear door, and a rear deco,
At least one desi board speaker disposed on the desi board, at least one left front door speaker disposed on the left front door, at least one right front door speaker disposed on the right front door, disposed on the left rear door The vehicle further comprises at least one of at least one left rear door speaker, at least one right rear door speaker disposed in the right rear door, and at least one rear deco speaker disposed in the rear deco. The method of claim 35,
The at least one speaker includes the display device having the vibration generating device.

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