JP2021162796A - On-vehicle display device - Google Patents

Abstract

To provide an on-vehicle display device having a display unit constituted of multiple display panels capable of achieving both the mountability of the display unit and the stress relaxation of the end panels as well as the driver to be able to easily see the image on the end panels.SOLUTION: In an on-vehicle display device 1 includes a display unit 2 constituted of multiple display panels 21 which are arranged aligned along the width direction of a vehicle V. At least one of the two end panels located at both ends in the width direction of the display unit 2 is a curved display panel 212. The multiple display panels 21 are housed in a storage part of a housing 3 via a heat radiating sheet. The heat radiating sheet is formed of a hardened liquid resin composed of a gel or one having a hardness of less than a predetermined value.SELECTED DRAWING: Figure 1

Description

The present invention relates to an in-vehicle display device.

In recent years, in the field of in-vehicle display devices mounted on vehicles such as automobiles, the area of an image display area has been increased. Examples of this type of in-vehicle display device include those described in Patent Document 1.

The in-vehicle display device described in Patent Document 1 includes two or more types of display panels having different plane sizes and a frame as a support for supporting the two or more types of display panels, and the two or more types of display panels are framed. They are arranged in parallel so that they do not overlap each other.

JP-A-2018-31898

This in-vehicle display device can be mounted on an instrument panel of a vehicle, for example, and by arranging a plurality of display panels along the vehicle width direction, a plurality of different types of images can be presented to the driver at once. Is. For example, in this in-vehicle display device, in order from the left side in the vehicle width direction of the mounted vehicle, an electronic mirror showing the left side of the vehicle, an image for passengers, setting screens of various in-vehicle devices, various meters, and an electronic mirror showing the right side of the vehicle. Present multiple images of different types such as to the occupants.

In this type of in-vehicle display device, when the entire display unit composed of a plurality of display panels has a flat plate shape, the images displayed at both ends of the display unit become difficult for the driver to see. As a method for solving such a problem, the image display surface of the display panel (hereinafter referred to as "end panel") located at the end of the display in the vehicle width direction is facing the driver's seat side. As described above, it is conceivable that the arrangement or shape is different from that of other display panels.

However, if the end panel is arranged in a flat plate shape and the orientation of the image display surface is changed, the space occupied by the end panel in the vehicle interior increases, which reduces the mountability and reduces the mountability of the occupant. It can be an obstacle to getting on and off. Further, when the direction of the image display surface is changed by forming the end panel into a curved curved surface, stress is applied to the end panel, and there is a concern that the reliability of the end panel may be lowered.

Further, the in-vehicle display device described in Patent Document 1 requires two or more types of display panels having different plane sizes in order to prevent unnecessary display areas from being generated in each display panel, and all the display panels require. There is a risk that the video display area larger than the specified value cannot be secured.

In view of the above points, the present invention is an in-vehicle display device having a display unit composed of a plurality of display panels having a predetermined or more image display area, while making the image on the end panel easier for the driver to see. The purpose is to achieve both mountability of the display unit and stress relaxation of the end panel.

In order to achieve the above object, the in-vehicle display device according to claim 1 is an in-vehicle display device mounted on a vehicle (V) and presenting various images to the driver of the vehicle, and is a plurality of display panels ( A display unit (2) composed of 21), a housing (3) having a plurality of storage units (31) for accommodating the display panel, and an image display surface (21a) among the plurality of display panels attached to the housing. A transparent cover (6) that covers the side of the display panel, and a rear surface (21b) of a plurality of display panels that are opposite to the image display surface and the housing, and are in contact with the back surface and the housing to form a display panel. A heat radiating sheet (4) that transfers heat to the housing is provided, and the display panel located at the end of the plurality of display panels is used as the end panel, and at least one of the end panels has a curved image display surface. The curved display panel (212) is housed in the housing portion in a curved shape, and the heat radiating sheet is a cured liquid resin having a gel shape or hardness of a predetermined value or less.

As a result, at least one of the end panels located at the ends of the plurality of display panels constituting the display unit has a curved shape, and the heat radiating sheet arranged between the end panel and the holding body is a liquid resin. This is an in-vehicle display device that is a cured product of. Since at least one of the end panels is a curved display panel, the image displayed on the end panel is in a state that is easy for the driver to see. Further, since the end panel has a curved shape and the space occupancy is smaller than that in the case of a flat plate shape, the mountability on a vehicle is improved. Further, by forming the heat radiating sheet with a liquid resin and setting the hardness of the heat radiating sheet to a predetermined value or less, the stress applied to the curved display panel is relaxed.

The reference reference numerals in parentheses attached to each component or the like indicate an example of the correspondence between the component or the like and the specific component or the like described in the embodiment described later.

It is a figure which shows the vehicle-mounted display device which concerns on embodiment. It is a perspective view which shows the structural example of the display part and the control part connected to the display part in an in-vehicle display device. It is sectional drawing which shows the cross-sectional structure between III-III of FIG. It is sectional drawing which shows the cross-sectional structure between IV-IV of FIG. It is a figure for demonstrating the feeling of depth by making a display panel a curved shape. It is a perspective view which shows the structural example of the display part in the vehicle-mounted display device which concerns on 1st modification. It is a perspective view which shows the structural example of the display part in the vehicle-mounted display device which concerns on the 2nd modification.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In each of the following embodiments, parts that are the same or equal to each other will be described with the same reference numerals.

(Embodiment)
The vehicle-mounted display device 1 according to the embodiment will be described with reference to FIGS. 1 to 5.

Although FIG. 1 shows an example of mounting the in-vehicle display device 1 on the vehicle V, some of the interior parts of the vehicle V are omitted for easy viewing.

Hereinafter, for convenience of explanation, as shown in FIG. 1, the direction of the vehicle V along the vehicle overall length direction from the passenger compartment side toward the windshield V2 is referred to as "front", and the direction opposite to the front direction is referred to as "front". Called "after". Further, the left and right directions in the state of facing the front direction, which are the directions along the vehicle width direction of the vehicle V, are referred to as "left" and "right". In the present specification, unless otherwise specified, the "front", "rear", "left", and "right" directions mean the directions indicated by the arrows in FIG.

As shown in FIG. 1, for example, the in-vehicle display device 1 includes a plurality of display panels 21 and a housing 3 in which the plurality of display panels 21 are housed, and displays various types of images. In the vehicle-mounted display device 1, for example, the housing 3 is mounted on the instrument panel V1 of the vehicle V, and a plurality of display panels 21 are arranged along the vehicle width direction of the vehicle V to form the display unit 2. .. In the in-vehicle display device 1, for example, as shown in FIG. 2, video signals are input to a plurality of display panels 21 via a control unit 7 connected to other in-vehicle devices (not shown), and the video signals are input to a plurality of users. It is configured so that various images can be presented.

In the present specification, a case where the vehicle-mounted display device 1 includes five display panels 21 will be described as a typical example, but the present invention is not limited to this, and the number of display panels 21 is arbitrary and is appropriately changed. obtain.

As shown in FIG. 2, for example, a plurality of display panels 21 are mounted on the housing 3 with a gap between them and in a state where they do not overlap with each other, and constitute a display unit 2 capable of displaying a plurality of different types of images. .. As shown in FIG. 2, the plurality of display panels 21 are arranged side by side in one direction. Hereinafter, the direction in which the plurality of display panels 21 are arranged may be referred to as an "arrangement direction". At least one of the end panels of the plurality of display panels 21 is a flexible flexible panel, for example, an organic light emitting diode (OLED) panel.

Hereinafter, a case where all of the plurality of display panels 21 constituting the display unit 2 are flexible OLED panels will be described, but the present invention is not limited to this. For example, the display unit 2 may be composed of other display bodies such as a liquid crystal panel and a micro LED panel in addition to the OLED panel, or these may be mixed.

In the OLED panel, for example, a TFT layer having a plurality of thin film transistors (TFTs) and an OLED layer having pixels made up of a plurality of OLED elements are laminated in this order on a flexible substrate. Become. The flexible substrate is made of, for example, a film made of a resin material such as polyimide or an arbitrary material having flexibility such as flexible glass. The TFT layer includes a gate electrode, a gate insulating layer, a semiconductor layer, a source electrode, and a drain electrode, and a plurality of TFTs, which are elements whose current on / off can be controlled by adjusting the voltage of the gate electrode, are formed. Each of the plurality of TFTs is connected to one of a pair of electrodes constituting the plurality of OLED elements in the OLED layer, and is used for driving control of each OLED element. The OLED layer has, for example, a structure in which a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer, an electron injection layer, and the like are sequentially laminated between a pair of electrodes, and emits light by applying a voltage. It is provided with a plurality of OLED elements. In an OLED panel, a main pixel composed of an OLED element and having three sub-pixels having different emission colors of, for example, red, green, and blue is orthogonal to one direction in a plan view and orthogonal to the one direction. It is repeatedly arranged along the direction.

Further, since the configurations of OLEDs, TFTs, and OLED panels and their materials are known, detailed description thereof will be omitted in the present specification. The configurations of the TFT and the OLED are not limited to the above examples, and any configuration can be adopted.

Each of the plurality of display panels 21 is configured to have a plane size of a predetermined size or larger, that is, a video display area of a predetermined size or larger. As shown in FIG. 2, for example, the plurality of display panels 21 are attached to different parts of the housing 3, and are arranged so as to face the rear side of the vehicle V.

The video display area equal to or larger than a predetermined value means, for example, not limited to, but is larger than the general flat size of a center information display (CID) for in-vehicle use. Further, the plurality of display panels 21 may have a predetermined or larger image display area, and some or all of them may have different plane sizes / outer shapes, or all may have the same plane size / outer shape.

Hereinafter, for convenience of explanation, as shown in FIG. 1, among a plurality of display panels 21 housed in the housing 3, a flat plate-shaped one is referred to as a "flat plate display panel 211", and a curved curved surface-shaped one is referred to as "curved". It may be referred to as "display panel 212".

As shown in FIG. 2, for example, in the plurality of display panels 21, the end panel is a curved display panel 212, and the one different from the end panel is a flat plate display panel 211. The display unit 2 is composed of, for example, three flat plate display panels 211 and two curved display panels 212, and the breakdown and arrangement thereof may be appropriately changed. At least one of the end panels located at both ends of the display unit 2 in the vehicle width direction is a curved display panel 212.

The flat plate display panel 211 displays images that are preferably displayed on a flat surface, such as various meter displays such as a CID and a speedometer, and an operation screen of an audio device. The flat plate display panel 211 is used, for example, for displaying video content including text information such as characters, numerical values, and symbols. As shown in FIG. 3, for example, the plurality of flat plate display panels 211 are individually housed in the housing portion 31 of the housing 3 together with the heat radiating sheet 4 and the optical adhesive 5. In the flat plate display panel 211, the image display surface 21a is covered with the transparent cover 6 via the optical adhesive 5, while the back surface 21b is in contact with the heat radiating sheet 4, and the back surface of the housing 3 is covered with the heat radiating sheet 4. The heat dissipation unit 33 is configured to release heat. The same applies to the next curved display panel 212.

As shown in FIG. 4, the curved display panel 212 is housed in the housing 3 in a curved state, and displays an image on a curved surface. The curved display panel 212 is located at least farther from the driver of the vehicle V among the end panels, and the image display surface 21a is directed toward the driver to improve the visibility of the image. Further, the curved display panel 212 occupies less space in the vehicle interior than the case where the image display surface 21a is directed toward the driver while maintaining the flat plate shape, and the image display area can be increased while being mountable. It is possible to improve.

The curved display panel 212 is used for displaying video content that does not include text information that is desirable to be displayed on a flat surface, that is, video content that is desirable to be displayed on a curved surface, such as an electronic mirror. The curved display panel 212 can give the user a sense of distance by displaying an image on a curved surface.

Specifically, for example, as shown in FIG. 5, a case where a difference occurs in the linear distance (hereinafter referred to as “visual distance”) between the user's eyes and the display surface on the image display surface 21a will be described as an example. Note that FIG. 5 shows a part of the user and the display unit 2 as viewed from above, that is, in the normal direction with respect to the plane formed by the front-rear direction and the left-right direction shown in FIG.

When there is a difference in the viewing distance, the part of the image displayed on the curved display panel 212 that has a relatively small viewing distance looks large to the user, and the part that has a relatively large viewing distance is small to the user. appear. As a result, the user can see the part of the displayed image having a small viewing distance close and the part having a large viewing distance far away, so that the displayed image has a sense of distance equal to or greater than the difference in viewing distance, that is, a sense of depth of the displayed image. Remember. Therefore, the curved display panel 212 is preferably used for the purpose of reducing the recognition load of the image by displaying a map or an image obtained by imaging the outside of the vehicle and giving the user a sense of depth.

Here, an example in which the curved display panel 212 is curved along the left-right direction has been described as a typical example, but the present invention is not limited to this typical example. If the curved display panel 212 has a predetermined distribution in the distance between the user's eyes and the image display surface 21a due to the curved shape, the user feels a sense of depth in the displayed image. It may be in a direction other than the left-right direction.

As shown in FIG. 1, for example, the housing 3 is attached to the instrument panel V1 of the vehicle V by an arbitrary method. As shown in FIG. 3, for example, the housing 3 includes a frame body portion 32 and a back heat radiating portion 33 for radiating heat from the display panel 21 to the outside, and these members are integrated with an adhesive or the like (not shown). It is a modified configuration. In the housing 3, a plurality of recesses formed by the opening of the frame body portion 32 and the back surface heat radiating portion 33 form the accommodating portion 31 of the display panel 21.

In the accommodating portion 31, the heat radiating sheet 4, the display panel 21, and the optical adhesive 5 are accommodated in this order from the back heat radiating portion 33 side. The accommodating portion 31 only needs to be able to accommodate the display panel 21, and its outer shape, size, and the like are appropriately changed according to the outer shape and size of the display panel 21. The entire area of the accommodating portion 31 is covered with the transparent cover 6, as shown in FIGS. 3 and 4, for example.

The frame body portion 32 is, for example, a plate-shaped member in which openings constituting the accommodating portion 31 are provided as many as the number of display panels 21, and has a lattice shape having a plurality of openings formed as a frame body. The frame body portion 32 is made of, for example, an arbitrary resin material. As shown in FIG. 2, for example, the frame body portion 32 has a flat shape in the area where the flat plate display panel 211 is arranged and its vicinity, and the area in which the curved display panel 212 is arranged and its vicinity is a curved display panel. The shape is curved along the shape of 212. The shape, size, and the like of the frame body portion 32 are appropriately changed according to the shape, size, and number of the display panel 21, but at least one of both ends of the frame body portion 32 in the arrangement direction of the display panel 21 is curved and displayed. It has a curved shape that follows the shape of the panel 212.

The back heat radiating unit 33 is a member arranged on the back surface 21b side of the display panel 21, and heat of the display panel 21 is transferred through the heat radiating sheet 4 to release the heat to the outside. The back heat dissipation portion 33 is made of, for example, any metal material having high thermal conductivity such as aluminum or an alloy material containing the same. The back heat radiating portion 33 has a shape that follows the shape of the frame body portion 32, and the shape and the like are appropriately changed according to the shape and size of the frame body portion 32.

The heat radiating sheet 4 is a member that covers the back surface 21b of the display panel 21 and efficiently transfers the heat of the display panel 21 to the back surface heat radiating unit 33. The heat radiating sheet 4 is made of a predetermined resin material having a high thermal conductivity from the viewpoint of heat dissipation of the display panel 21 and a low coefficient of thermal expansion from the viewpoint of stress relaxation of the display panel 21. The heat radiating sheet 4 is formed by, for example, dropping a liquid resin by potting and then curing it, and after being attached to the housing 3, the hardness after curing is increased in order to release the force applied to the display panel 21 and relieve the stress. It is considered to be less than or equal to the predetermined value. Specifically, the hardness of the cured heat dissipation sheet 4 can be measured, for example, by reading the indentation depth with a method conforming to JIS K 6253 defined by the Japanese Industrial Standards (JIS), that is, an A-type hardness tester. From the viewpoint of stress relaxation, the heat radiating sheet 4 preferably has a hardness of 60 or less obtained by the above-mentioned measuring method, and may be in the form of a gel. For the heat radiating sheet 4, for example, a work in which the display panel 21 is attached to the transparent cover 6 with an optical adhesive 5 is prepared in advance, and the housing 3 in which the liquid resin is dropped on the accommodating portion 31 and the work are integrated. It can be formed by the step of hardening the liquid resin.

As the liquid resin, for example, SC-300M (two-component curable silicone encapsulant) manufactured by Lord Corporation can be used. In this case, for example, a liquid resin is dropped onto the accommodating portion 31 of the housing 3 by potting, and after the transparent cover 6 to which the display panel 21 is attached is attached to the housing 3, it takes about 2 hours in an environment of 100 ° C. By placing it, it can be cured to form the heat radiating sheet 4. When the display panel 21 is an OLED panel and the heat radiating sheet 4 is formed by using a heat-curable liquid resin, the curing condition is set to, for example, a temperature of 100 ° C. or lower so as not to excessively deteriorate the OLED panel. Is preferable.

Further, the liquid resin is not limited to the above-mentioned example, and any material may be used as long as the altitude after curing is, for example, 60 or less by the above-mentioned evaluation method, and other known resin materials may be used. good. For example, liquid resins include Pharmajour (room temperature curing type, two-component polyurethane potting material) A-610 and A-113 manufactured by Sonderhof and KE-1282-A / B and KE-1283-A manufactured by Shin-Etsu Chemical Co., Ltd. Potting materials such as / B can also be used. Further, the liquid resin may be a two-component curing type, a heat curing type, or a humidity curing type, and the curing conditions can be appropriately changed depending on the type of material.

As described above, the heat radiating sheet 4 is brought into a state of being cured so that the hardness becomes equal to or less than a predetermined value in order to relax the stress applied to the curved display panel 212, and the heat radiating property of the display panel 21 is improved and the stress is increased. It plays two roles of relaxation. Further, since the heat radiating sheet 4 has a hardness equal to or less than a predetermined value, the effect of alleviating the stress generated on the display panel 21 even when the display panel 21 is subjected to a local pressing force from the transparent cover 6 side. Is also expected.

The optical adhesive 5 covers the image display surface 21a of the display panel 21 and adheres the display panel 21 and the transparent cover 6. The optical adhesive 5 is, for example, OCA (abbreviation for Optical Clear Adhesive).

The transparent cover 6 is a transparent member arranged on the opposite side of the back heat radiating portion 33 with the plurality of display panels 21 interposed therebetween. The transparent cover 6 is attached to a plurality of display panels 21 via an optical adhesive 5 and covers the image display surface 21a side. The transparent cover 6 is made of, for example, any translucent optical resin material or glass, and is an optical film in the former case and a flexible flexible glass in the latter case.

From the viewpoint of design, the surface of the transparent cover 6 facing the display panel 21 may be printed in black with a light-shielding property in order to hide a part of the outer shell of the display panel 21. For example, black printing is formed in a frame shape that hides the non-adjacent sides of the plurality of display panels 21, with the sides forming the outer shell of the display panel 21 that are not adjacent to the other display panels 21 as non-adjacent sides.

The control unit 7 is, for example, an electronic control unit in which a CPU, ROM, RAM, etc. are mounted on a circuit board (not shown), and is referred to as an ECU (abbreviation of Electronic Control Unit). The control unit 7 is connected to, for example, another in-vehicle sensor or in-vehicle device (not shown), outputs a video signal corresponding to the other in-vehicle sensor or in-vehicle device to the display panel 21, and executes display control of the display panel 21. It is composed. The control unit 7 is arranged at an arbitrary position in the vehicle V, such as inside the instrument panel V1. The control unit 7 may be an ECU common to a plurality of display panels 21, or may have an independent configuration for each display panel 21, and the number thereof is arbitrary.

The above is the basic configuration of the vehicle-mounted display device 1 of the present embodiment.

Examples of the in-vehicle sensor include, but are not limited to, a distance measuring sensor, an acceleration sensor, a gyro sensor, an oil sensor, a seatbelt sensor, and the like. Examples of the in-vehicle device include, but are not limited to, a navigation device, a car air conditioner, an in-vehicle camera, a communication device, an audio device, and the like.

According to the embodiment, the vehicle is provided with a display unit 2 composed of a plurality of display panels 21 having an image display area equal to or larger than a predetermined value, and end panels arranged at both ends in the left-right direction are curved display panels 212. It becomes the display device 1. The curved display panel 212 is in a state in which the image display surface 21a is directed toward the driver side, thereby improving the visibility of the image. Further, the curved display panel 212 occupies less space in the vehicle interior as compared with the case where the image display surface 21a is directed toward the driver side while maintaining the flat plate shape, and the mountability is improved.

Further, in the in-vehicle display device 1, the back surface 21b side of the display panel 21 is attached to the housing 3 via the heat radiating sheet 4, and the heat radiating sheet 4 is made of a liquid resin to have a hardness equal to or less than a predetermined value. , The structure is such that the stress of the display panel 21 is relaxed. Therefore, the heat radiating sheet 4 can relieve the stress of the curved display panel 212 as well as the stress of the flat plate display panel 211.

Therefore, the in-vehicle display device 1 can make it easier for the driver to see the image on the end panel, and at the same time, it is possible to achieve both the mountability of the display unit 2 and the stress relaxation of the end panel.

(First modification)
In the above embodiment, an example in which the entire curved display panel 212 is in a two-dimensional bent state in which the entire curved display panel 212 is curved in a bow shape along one direction (left or right) has been described, but the present invention is not limited to this shape.

The curved display panel 212 may be in a three-dimensional bent state in which the curved display panel 212 is curved along two or more directions, for example, as shown in FIG. Note that FIG. 6 shows the display unit 2 viewed from above, as in FIG. As a result, the curved display panel 212 has a shape in which the viewing distance changes in the linear direction connecting the driver's eyes and the image display surface 21a, and a sense of depth in the linear direction can be further obtained in the displayed image.

(Second modification)
In the above embodiment, an example in which all the display panels 21 other than the end panel are flat plate display panels 211 has been described, but the present invention is not limited to this. For example, as shown in FIG. 7, the display panel 21 (hereinafter referred to as “center display panel 21”) located near the center in the left-right direction among the plurality of display panels 21 may be a curved display panel 212. Note that FIG. 7 shows the display unit 2 viewed from above, as in FIG.

In this case, the central display panel 21 can reduce the recognition load of the driver by providing an image that gives a sense of depth when, for example, a navigation screen (for example, a map) in a car navigation device (not shown) is displayed. .. As described above, the display panel 21 other than the end panel may be a curved display panel 212 depending on the intended use.

The vehicle-mounted display device 1 can also obtain the effects of the above-described embodiment by the above-mentioned two modifications.

(Other embodiments)
Although the present invention has been described in accordance with Examples, it is understood that the present invention is not limited to the Examples and structures. The present invention also includes various modifications and modifications within a uniform range. In addition, various combinations and forms, as well as other combinations and forms including only one element thereof, more or less, are also within the scope and ideology of the present invention.

(1) For example, the housing 3 is fixed to the instrument panel V1, but the present invention is not limited to this, and the mounting position in the vehicle V may be changed. For example, the housing 3 may be attached to the instrument panel V1 via an arbitrary movable mechanism such as a slider, and may be configured to be slidable in the front-rear direction. As a result, the distance between the driver and the display panel 21 can be changed as needed.

(2) In the above embodiment, an example in which both end panels of the plurality of display panels 21 are curved display panels 212 has been described, but only one of the end panels is curved display panel 212 and the other is curved display panel 212. It may be a flat plate display panel 211.

(3) The display unit 2 is not limited to a configuration in which the flat plate display panel 211 and the curved display panel 212 are mixed, and may be configured only by the curved display panel 212.

2 Display 21 Display panel 21a Video display surface 21b Rear 211 Flat plate display panel 212 Curved display panel 3 Housing 31 Storage unit 4 Heat dissipation sheet 6 Transparent cover

Claims (6)

An in-vehicle display device mounted on a vehicle (V) and presenting various images to the driver of the vehicle.
A display unit (2) composed of a plurality of display panels (21) and
A housing (3) having a plurality of accommodating portions (31) accommodating the display panel,
A transparent cover (6) attached to the housing and covering the image display surface (21a) side of the plurality of display panels,
Of the plurality of display panels, the back surface (21b) opposite to the image display surface is arranged between the housing and the back surface and the housing, and the heat of the display panel is applied to the housing. With a heat dissipation sheet (4) that transmits to
The display panel located at the end of the plurality of display panels is used as the end panel, and at least one of the end panels is housed in the housing portion in a curved surface shape in which the image display surface is curved. It is a curved display panel (212),
The heat radiating sheet is a cured liquid resin, and is a gel-like or in-vehicle display device having a hardness of a predetermined value or less. The vehicle-mounted display device according to claim 1, wherein the heat radiating sheet has a hardness of 60 or less obtained by an A-type hardness tester. The vehicle-mounted display device according to claim 1 or 2, wherein the plurality of display panels have the same plane size. The vehicle-mounted display device according to any one of claims 1 to 3, wherein the curved display panel is a flexible OLED panel and has a curved surface shape of three-dimensional bending. At least one of the plurality of display panels is a flat plate display panel (211) having a flat plate shape.
The curved display panel displays video content different from the text information, and
The vehicle-mounted display device according to any one of claims 1 to 4, wherein the flat plate display panel displays video content including text information. The vehicle-mounted display device according to any one of claims 1 to 5, wherein a movable mechanism is attached to the housing, and the mounting position in the vehicle can be changed.

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