Display device and display system

Abstract

A display device according to an embodiment of the present disclosure has a first display block and a second display block. The first display block includes a plurality of light emitting elements disposed to be arranged in a first direction and a second direction intersecting the first direction. The second display block includes a plurality of light emitting elements disposed to be arranged in a first direction and a second direction. The first display block and the second display block are arranged adjacent to each other in a first direction, and are offset from each other by a predetermined amount in a second direction.

Description

Technical Field

[0001] The present disclosure relates to a display device and a display system. Background Art

[0002] A display device has been proposed in which a plurality of display elements are non-uniformly arranged to display a target image (PTL1).

[0003] Citation List

[0004] Patent Document

[0005] PTL 1: International Publication No. WO 2022 / 130863 Summary of the Invention

[0006] It is desirable for the display device to have improved performance.

[0007] It is desirable to provide a display device having good performance.

[0008] A display device according to an embodiment of the present disclosure includes a first display block and a second display block. The first display block includes a plurality of light-emitting elements arranged in a first direction and a second direction intersecting the first direction. The second display block includes a plurality of light-emitting elements arranged in the first direction and the second direction. The first display block and the second display block are arranged adjacent to each other in the first direction and are offset from each other by a predetermined amount in the second direction.

[0009] A display system according to an embodiment of the present disclosure includes a display device and a reflection member that reflects light from the display device. The display device includes a first display block and a second display block. The first display block includes a plurality of light-emitting elements arranged in a first direction and a second direction intersecting the first direction. The second display block includes a plurality of light-emitting elements arranged in the first direction and the second direction. The first display block and the second display block are arranged adjacent to each other in the first direction and are offset from each other by a predetermined amount in the second direction. Brief Description of the Drawings

[0010] Figure 1 is an explanatory diagram of a configuration example of a display system according to an embodiment of the present disclosure.

[0011] Figure 2 is an explanatory diagram of a configuration example of a display system according to an embodiment of the present disclosure.

[0012] Figure 3 is a block diagram illustrating a configuration example of a display device according to an embodiment of the present disclosure.

[0013] Figure 4A is a diagram illustrating a configuration example of a display device according to an embodiment of the present disclosure.

[0014] Figure 4B FIG. is a diagram showing a structural example of a display device according to an embodiment of the present disclosure.

[0015] Figure 5A FIG. is a diagram showing a structural example of a display block of a display device according to an embodiment of the present disclosure.

[0016] Figure 5B FIG. is a diagram showing a structural example of a display block of a display device according to an embodiment of the present disclosure.

[0017] Figure 6A FIG. is a diagram showing an arrangement example of light-emitting elements of a display device according to an embodiment of the present disclosure.

[0018] Figure 6B FIG. is a diagram showing an arrangement example of light-emitting elements of a display device according to an embodiment of the present disclosure.

[0019] Figure 6C FIG. is a diagram showing an arrangement example of light-emitting elements of a display device according to an embodiment of the present disclosure.

[0020] Figure 6D FIG. is a diagram showing an arrangement example of light-emitting elements of a display device according to an embodiment of the present disclosure.

[0021] Figure 6E FIG. is a diagram showing an arrangement example of light-emitting elements of a display device according to an embodiment of the present disclosure.

[0022] Figure 6F FIG. is a diagram showing an arrangement example of light-emitting elements of a display device according to an embodiment of the present disclosure.

[0023] Figure 6G FIG. is a diagram showing an arrangement example of light-emitting elements of a display device according to an embodiment of the present disclosure.

[0024] Figure 6H FIG. is an explanatory diagram showing a structural example of a display device according to an embodiment of the present disclosure.

[0025] Figure 6I FIG. is an explanatory diagram showing a structural example of a display device according to an embodiment of the present disclosure.

[0026] Figure 7A FIG. is a diagram showing a structural example of a display device according to an embodiment of the present disclosure.

[0027] Figure 7B FIG. is a diagram showing a structural example of a display device according to an embodiment of the present disclosure.

[0028] Figure 7C FIG. is a diagram showing a structural example of a display device according to an embodiment of the present disclosure.

[0029] Figure 8A It is an explanatory diagram of an arrangement example of display blocks of a display device according to an embodiment of the present disclosure.

[0030] Figure 8B It is an explanatory diagram of an arrangement example of display blocks of a display device according to an embodiment of the present disclosure.

[0031] Figure 9A It is an explanatory diagram of an arrangement example of display blocks of a display device according to a comparative example of the present disclosure.

[0032] Figure 9B It is an explanatory diagram of an arrangement example of display blocks of a display device according to a comparative example of the present disclosure.

[0033] Figure 10 It is an explanatory diagram of an example of a cross-sectional structure of a pixel of a display device according to an embodiment of the present disclosure.

[0034] Figure 11 It is a diagram illustrating an example of the light emission luminance of a pixel of a display device according to an embodiment of the present disclosure.

[0035] Figure 12 It is an explanatory diagram of an example of the light emission luminance of a pixel of a display device according to an embodiment of the present disclosure.

[0036] Figure 13 It is an explanatory diagram of another example of a cross-sectional structure of a pixel of a display device according to an embodiment of the present disclosure.

[0037] Figure 14 It is a diagram illustrating another example of the light emission luminance of a pixel of a display device according to an embodiment of the present disclosure.

[0038] Figure 15 It is an explanatory diagram of another example of the light emission luminance of a pixel of a display device according to an embodiment of the present disclosure.

[0039] Figure 16A It is an explanatory diagram of another example of a cross-sectional structure of a pixel of a display device according to an embodiment of the present disclosure.

[0040] Figure 16B It is an explanatory diagram of another example of a cross-sectional structure of a pixel of a display device according to an embodiment of the present disclosure.

[0041] Figure 16C It is an explanatory diagram of another example of a cross-sectional structure of a pixel of a display device according to an embodiment of the present disclosure.

[0042] Figure 16DExplanatory diagram of another example of the cross-sectional structure of a pixel of a display device according to an embodiment of the present disclosure.

[0043] Figure 17 Explanatory diagram of a configuration example of a control unit of a display device according to an embodiment of the present disclosure.

[0044] Figure 18A Explanatory diagram of the relationship between input data and the current supplied to a light-emitting element of a display device according to an embodiment of the present disclosure.

[0045] Figure 18B Explanatory diagram of a setting table of a display device according to an embodiment of the present disclosure.

[0046] Figure 19 Flowchart illustrating an operation example of a display system according to an embodiment of the present disclosure.

[0047] Figure 20 Diagram illustrating an arrangement example of sensors of a display device according to an embodiment of the present disclosure.

[0048] Figure 21A Explanatory diagram of an example of image control performed by a display device according to an embodiment of the present disclosure.

[0049] Figure 21B Explanatory diagram of an example of image control performed by a display device according to an embodiment of the present disclosure.

[0050] Figure 22A Explanatory diagram of an example of image control performed by a display device according to an embodiment of the present disclosure.

[0051] Figure 22B Explanatory diagram of an example of image control performed by a display device according to an embodiment of the present disclosure.

[0052] Figure 22C Explanatory diagram of an example of image control performed by a display device according to an embodiment of the present disclosure.

[0053] Figure 23 Explanatory diagram of an arrangement example of sensors of a display device according to an embodiment of the present disclosure.

[0054] Figure 24 Diagram illustrating an example of state transition of a driving unit of a display device according to an embodiment of the present disclosure.

[0055] Figure 25A Explanatory diagram of a configuration example of a display system according to Modification Example 1 of the present disclosure.

[0056] Figure 25BExplanatory diagram of a configuration example of a display system according to Modification Example 1 of the present disclosure.

[0057] Figure 26A is Figure 1 Explanatory diagram of the behavior of the display system shown in

[0058] Figure 26B is Figure 1 Explanatory diagram of the behavior of the display system shown in

[0059] Figure 27A Explanatory diagram of a configuration example of a display system according to Modification Example 2 of the present disclosure.

[0060] Figure 27B Explanatory diagram of a configuration example of a display system according to Modification Example 2 of the present disclosure.

[0061] Figure 28 Explanatory diagram of a configuration example of a display device according to Modification Example 3 of the present disclosure.

[0062] Figure 29 Explanatory diagram of a configuration example of a display device according to Modification Example 3 of the present disclosure.

[0063] Figure 30 Explanatory diagram of a configuration example of a display device according to Modification Example 3 of the present disclosure.

[0064] Figure 31 Explanatory diagram of a configuration example of a display device according to Modification Example 4 of the present disclosure.

[0065] Figure 32 Explanatory diagram of a configuration example of a display device according to Modification Example 4 of the present disclosure.

[0066] Figure 33 Explanatory diagram of a configuration example of a display device according to Modification Example 4 of the present disclosure.

[0067] Figure 34 Explanatory diagram of a configuration example of a display device according to Modification Example 4 of the present disclosure.

[0068] Figure 35 Explanatory diagram of an operation example of a display device according to Modification Example 5 of the present disclosure.

[0069] Figure 36A Explanatory diagram of an operation example of a display device according to Modification Example 5 of the present disclosure.

[0070] Figure 36B Explanatory diagram of an operation example of a display device according to Modification Example 5 of the present disclosure.

[0071] Figure 37AExplanatory diagram of an operation example of a display device according to Modification Example 6 of the present disclosure.

[0072] Figure 37B Explanatory diagram of an operation example of a display device according to Modification Example 6 of the present disclosure.

[0073] Figure 37C Explanatory diagram of an operation example of a display device according to Modification Example 6 of the present disclosure.

[0074] Figure 38 Flowchart illustrating an operation example of a display system according to Modification Example 6 of the present disclosure.

[0075] Figure 39A Explanatory diagram of another operation example of a display device according to Modification Example 6 of the present disclosure.

[0076] Figure 39B Explanatory diagram of another operation example of a display device according to Modification Example 6 of the present disclosure.

[0077] Figure 40A Explanatory diagram of another operation example of a display device according to Modification Example 6 of the present disclosure.

[0078] Figure 40B Explanatory diagram of another operation example of a display device according to Modification Example 6 of the present disclosure.

[0079] Figure 41 Flowchart illustrating an operation example of a display system according to Modification Example 6 of the present disclosure.

[0080] Figure 42 Block diagram showing an example of a schematic configuration of a vehicle control system.

[0081] Figure 43 Diagram helping to explain an example of the installation positions of an outside information detection unit and an imaging unit. Detailed Description of the Invention

[0082] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. It should be noted that the description will be given in the following order.

[0083] 1. Embodiments

[0084] 2. Modification Examples

[0085] 3. Practical Application Examples

[0086] <1. Embodiments>

[0087] Figure 1 And Figure 2These are explanatory diagrams of configuration examples of display systems according to embodiments of the present disclosure. The display system 200 includes a display device 1 and a reflection member 121. The display device 1 includes a plurality of pixels P, each pixel P includes a light-emitting element 10, and is configured to be able to display an image. The light-emitting element 10 is, for example, an LED (light-emitting diode). In the display device 1, a plurality of light-emitting elements 10 are arranged in a matrix.

[0088] In the display system 200, no mirror or magnifying glass is provided between the display device 1 and the reflection member 121. Accordingly, the light from the display device 1 is directly emitted to the reflection member 121 without passing through a mirror or magnifying glass.

[0089] In Figure 1 the example shown, the plurality of light-emitting elements 10 are two-dimensionally arranged in the Figure 1 shown X-Y directions. It should be noted that, as Figure 1 shown, the left-right direction orthogonal to the X-axis direction on the paper is defined as the Y-axis direction, and the direction orthogonal to the X-axis direction and the Y-axis direction is defined as the Z-axis direction. In the following drawings, in some cases, the Figure 1 arrow direction in

[0090] can be used as a standard for expressing directions.

[0091] The display device 1 can cause the light-emitting element 10 to generate light and irradiate the light to the outside. The display device 1 can control the light emission of the light-emitting element 10 of each pixel P to display an image (for example, a color image). The display device 1 can emit light to the reflection member 121 to display an image. The display device 1 can also be referred to as a light source (light source unit) capable of outputting light to display an image.

[0091] The reflection member 121 is a member that reflects the light from the display device 1. In Figure 1 the example shown, the reflection member 121 is the windshield (also referred to as the front glass, front window, etc.) of the vehicle 120. The reflection member 121 reflects a part of the light incident from the display device 1 toward the user (observer) side.

[0092] The image light projected by the display device 1 is guided by the reflection member 121 toward the user's eyes. The reflection member 121 can reflect the light emitted from the display device 1 to the user side to form a virtual image 130 of the image displayed by the display device 1.

[0093] In the display system 200, as described above, the reflection member 121 displays the image displayed on the display device 1 as a virtual image 130. For an occupant (driver, passenger) who is a user, it is possible to visually recognize the image projected by the display device 1 onto the reflection member 121 as a virtual image 130 in front of the windshield, which is the reflection member 121. The display device 1 (or the display system 200) can also be referred to as a display device (or a display system) that uses the reflection member 121 as a screen (a component on which projection is performed) to display (project) an image.

[0094] The user can perform observation by superimposing the real image in the field of view in front of the vehicle 120 (the vehicle body) and the image (virtual image 130) displayed by the display system 200 on each other. For example, the display system 200 displays various types of driving assistance information by superimposing this information on the scene (landscape) outside the vehicle. The display system 200 can cause the display device 1 and the reflection member 121 to present images indicating vehicle speed, fuel, navigation information, weather, temperature, time, various types of warning information, etc. to the user.

[0095] The display device 1 (or the display system 200) according to the present embodiment can be used as a head-up display (HUD). The display device 1 and the reflection member 121 can also be collectively referred to as a head-up display. The display system 200 including the display device 1 and the reflection member 121 can also be referred to as a head-up display system.

[0096] The display device 1 according to the present embodiment is provided to follow the curved surface of the windshield that is the reflection member 121. The display device 1 has a shape corresponding to the shape of the curved windshield. In Figure 2 the example shown, the display device 1 is provided by arranging a plurality of display blocks 80 described later along one side of the windshield that is the reflection member 121 having a predetermined curvature (radius of curvature).

[0097] The display device 1 is provided on or in the instrument panel 122 of the vehicle 120 to allow light from the display device 1 to be emitted to a block of the reflection member 121 (i.e., the windshield) from one side to the other side (substantially from the upper end to the substantially lower end, or from the substantially left end to the substantially right end). That is, the display device 1 is provided across a block from one end to the other end (substantially from the upper end to the substantially lower end, or from the substantially left end to the substantially right end) of the instrument panel 122.

[0098] In addition, the display device 1 can be provided on the entire surface of the instrument panel 122 to allow light from the display device 1 to be emitted to the entire surface of the windshield. In addition, the display device 1 can be mounted to be embedded in the instrument panel 122. The display device 1 can be provided across the entire instrument panel 122 between the A-pillars on the left and right sides in the vehicle width direction.

[0099] Providing a display device 1a as shown in Figure 2 makes it possible to achieve a larger screen and higher luminance. It is possible to arrange the display device 1 at the base (root) of the windshield, thereby making it possible to widen (increase) the display range of the image.

[0100] [Block Configuration of Display Device]

[0101] Figure 3 is a block diagram illustrating a configuration example of a display device according to an embodiment. The display device 1 includes a plurality of pixels P having light-emitting elements 10 and a control unit 20. The control unit 20 is a control circuit and is configured to be able to control each part of the display device 1. In Figure 3 the example shown, the control unit 20 includes a signal processing unit 30 and a plurality of driving units 40. It should be noted that image data is input to the control unit 20 from an image data storage device, but no illustration is given here. The image data storage device that stores (memorizes) image data (picture signals) may be provided outside the display device 1 or may be provided inside the display device 1.

[0102] The signal processing unit 30 is a signal processing circuit and is configured to be able to perform signal processing (information processing). The signal processing unit 30 includes, for example, a processor and a memory (such as ROM or RAM) and is configured to perform various types of signal processing. The signal processing unit 30 can read and execute a program incorporated therein and perform signal processing (information processing).

[0103] The signal processing unit 30 receives, for example, a clock and data supplied from the outside to command an operation mode and controls each part of the control unit 20. The signal processing unit 30 is configured to be able to control a plurality of driving units 40. The signal processing unit 30 supplies a signal for controlling the driving unit 40 to the driving unit 40 to control the operation of the driving unit 40.

[0104] The signal processing unit 30 may generate a signal related to the brightness (luminance) of the light emitted by the light-emitting elements 10 of the pixels P and output the signal to the driving unit 40. For example, the signal processing unit 30 sends a signal related to the amount of current to be supplied to the light-emitting elements 10 of each pixel P to each driving unit 40. It should be noted that the signal processing unit 30 may be provided for each plurality of driving units 40 (i.e., for each predetermined number of driving units 40).

[0105] The driving unit 40 is configured to drive the light-emitting element 10 of the pixel P. The driving unit 40 is a driving circuit and can control the operation of the pixel P. For example, the driving unit 40 is configured to be able to control the voltage and current applied to the light-emitting element 10 of each pixel P. The driving unit 40 is composed of a plurality of circuits, including, for example, a digital circuit section capable of performing digital signal processing, a DA conversion section (DAC: digital-to-analog converter), an amplifier circuit, and the like.

[0106] As Figure 3 schematically shown, for example, the driving unit 40 is provided for every plurality of pixels P (every predetermined number of pixels P). The driving unit 40 can supply the voltage and current for driving the light-emitting element 10 of the pixel P coupled to the driving unit 40 to control the light emission performed by the light-emitting element 10 of the pixel P. The driving unit 40 may be referred to as a driver IC (driver circuit).

[0107] [Structure of the display device]

[0108] Figure 4A and Figure 4B are diagrams each schematically showing a structural example of a display device according to an embodiment. The display device 1 includes a support member 90, as Figure 4A and Figure 4B shown. The support member 90 can be formed to follow the curved surface of the reflection member 121 (e.g., windshield). The support member 90 can be designed using the information about the curved surface of the reflection member 121 (e.g., windshield). The information about the curved surface of the reflection member 121 can be, for example, the curvature of the lower side of the reflection member 121 (e.g., windshield), or can be the curvature of the upper side of the reflection member 121. In addition, the average value of the curvature of the reflection member 121 (e.g., windshield) can be used.

[0109] In the support member 90, a plurality of support members 85 having a shape extending in the Y-axis direction are arranged to be arrayed in the X-axis direction. In Figure 4A the support members 85 are indicated by thick lines. The plurality of support members 85 are arranged on the support 90 to follow the curved surface of the reflection member 121 (e.g., windshield). The information about the curved surface of the reflection member 121 (e.g., windshield) can be used to determine the arrangement of the plurality of support members 85. The information about the curved surface can be, for example, the curvature of the lower side of the reflection member 121 (e.g., windshield), or can be the upper side curvature. In addition, the average value of the curvature of the reflection member 121 (e.g., windshield) can be used. Further, the plurality of support members 85 can be arranged to adapt to the shape of the side of the support member 90 on the reflection member 121 side.

[0110] In Figure 4A andFigure 4B In the example shown, 22 support members 85 are attached to the support member 90. The support member 90 is the main frame, and the support member 85 is the sub-frame. The support member 90 and the support member 85 are each formed using a metallic material (e.g., aluminum). It should be noted that the support members 90 and 85 may be made of a metallic material other than aluminum, or may be made using another material.

[0111] A display block 80 including a plurality of pixels P is disposed in each support member 85. In the support member 85, a plurality of display blocks 80 arranged in the vertical direction (column direction) are disposed. The display block 80 may also be referred to as a display unit. In addition, an element including the support member 85 and a plurality of display blocks 80 (display units) is referred to as a display module.

[0112] A plurality of display blocks 80 may be positioned in the longitudinal direction (the front-rear direction of the vehicle 120; Figure 4A and 4B the Y-axis direction in Figure 4A and Figure 4B shown) in the support member 85 serving as the sub-frame, and are arranged at equal intervals. As an example, as

[0113] shown in

[0114] [Structure of Display Block]

[0115] Figure 5A and Figure 5B are diagrams each illustrating a structural example of a display block of a display device according to an embodiment. The display block 80 is configured using a first substrate 101. The first substrate 101 is configured by, for example, a printed circuit board (PCB: Printed Circuit Board). For example, a material having a low coefficient of thermal expansion is used for the first substrate 101.

[0116] Figure 5A illustrates a structural example of the first substrate 101 of the display block 80 on the front surface side (i.e., the first surface 11S1 side). Figure 5BThe figure illustrates a structural example of the first substrate 101 of the display block 80 on the rear surface side or the second surface 11S2 side. A plurality of pixels P are provided on the front surface side of the first substrate 101, and the light-emitting elements 10 of each pixel P are arranged in a matrix form.

[0117] A plurality of drive units 40 are arranged on the rear surface side of the first substrate 101. The drive units 40 are arranged on the rear surface of the first substrate 101 for every plurality of pixels P (for every predetermined number of pixels P). It should be noted that the number and arrangement of the drive units 40 are not limited to the illustrated example and can be appropriately changed.

[0118] In Figure 5A the example shown, the pixel P of the display device 1 includes a green LED as the light-emitting element 10g capable of emitting green (G) light, a blue LED as the light-emitting element 10b capable of emitting blue (B) light, and a red LED as the light-emitting element 10r capable of emitting red (R) light.

[0119] The light-emitting element 10g is controlled by the drive unit 40 and is configured to be able to output light in the green wavelength region. The light-emitting element 10b is controlled by the drive unit 40 and is configured to be able to output light in the blue wavelength region. In addition, the light-emitting element 10r is controlled by the drive unit 40 and is configured to be able to output light in the red wavelength region. Each of the plurality of pixels P of the display device 1 includes LEDs of the three colors RGB.

[0120] In each display block 80 of the display device 1, a plurality of light-emitting elements 10r, a plurality of light-emitting elements 10g, and a plurality of light-emitting elements 10b are repeatedly arranged as in Figure 5A the example shown. The light-emitting element 10 of each pixel P is arranged, for example, in an RGB arrangement. The display device 1 can control the light emission of the LEDs of the three colors of each pixel P to display a color image (picture).

[0121] Figures 6A to 6G Each is a figure illustrating an arrangement example of the light-emitting elements of the display device according to the embodiment. In the display device 1, for example, the light-emitting elements 10r, the light-emitting elements 10g, and the light-emitting elements 10b are arranged as in Figure 6A shown. The light-emitting elements 10r, the light-emitting elements 10g, and the light-emitting elements 10b can be repeatedly arranged in the first substrate 101 to become an RGB arrangement as in Figure 6B or Figure 6C shown. In addition, for example, the light-emitting elements 10r, the light-emitting elements 10g, and the light-emitting elements 10b can be arranged as RG / GB, as in Figure 6D shown.

[0122] As in Figures 6E to 6GAs shown, only one type of light-emitting element 10r, light-emitting element 10g, and light-emitting element 10b can be arranged. It should be noted that the arrangement of the light-emitting elements is not limited to the example shown. For example, the display device 1 may have a light-emitting element capable of emitting light of a color other than RGB.

[0123] The pixel P may include a plurality of light-emitting elements of different colors, or may include one or more light-emitting elements of the same color. The configuration of the light-emitting elements of each pixel P can be determined by the image to be displayed in each display area of the display device 1. In addition, in the display device 1 and the display block 80, pixels including a plurality of light-emitting elements of different colors as light-emitting elements and pixels including only light-emitting elements of the same color (excluding pixels including a plurality of light-emitting elements of different colors) can exist in a mixed manner.

[0124] For example, in the display block 80 corresponding to a display area for displaying any content such as a movie, the light-emitting elements in one pixel can be a plurality of light-emitting elements of different colors as in the RGB arrangement. In addition, in the display block 80 of a display area for displaying a specific mark at a specific position as in the display of a warning mark, the light-emitting elements in one pixel can be only light-emitting elements of the same color.

[0125] The area of the region corresponding to the pixel of the image and the occupied area of the light-emitting element can be appropriately set according to the specifications of the display device 1. In the display device, the higher the temperature of the light-emitting element (e.g., LED), the lower the conversion efficiency of the light-emitting element when converting current into light. For example, in the case of using a blue LED coated with red phosphor and green phosphor as the light-emitting elements 10r and 10g, according to the theory of the phosphor, an increase in the temperature of the blue LED will result in a decrease in the photoelectric conversion efficiency. Therefore, for higher brightness, it is important to supply a large current to the light-emitting element while suppressing the increase in the temperature around the light-emitting element.

[0126] In Figure 6H In the example shown, the area of the plurality of light-emitting elements 10 in the region 110 corresponding to one pixel of the image can be in the range of 30% or less with respect to the area of the region 110. For example, the area (percentage) occupied by the light-emitting elements 10 (light-emitting elements 10r, 10g, and 10b) of RGB in the region 110 can be in the range of 20% or more and 30% or less with respect to the area of the region 110. Configuring the display device 1 in this way allows a relatively large current to be supplied to the light-emitting element 10 while suppressing the heat generation of the light-emitting element 10, making it possible to achieve higher brightness.

[0127] As an example, when the display device 1 has a resolution of 50 ppi to 80 ppi (pixels per inch), the occupied area of the plurality of light-emitting elements 10 in the region 110 can be set to a value within a range of 20% or more and 30% or less with respect to the entire area of the region 110. It is possible to cause the plurality of light-emitting elements 10 in each region 110 to emit light efficiently, thereby making it possible to achieve higher brightness.

[0128] In Figure 6I the example shown, the light-emitting element 10r, the light-emitting element 10g, and the light-emitting element 10b are arranged in an RG / GB arrangement for each region 110 corresponding to one pixel of the image. The total area of the four light-emitting elements 10, namely one light-emitting element 10r, two light-emitting elements 10g, and one light-emitting element 10b, can be within a range of 20% or more and 30% or less with respect to the area of the region 110.

[0129] The display device 1 according to the present embodiment is configured using a plurality of display blocks 80 as described above with reference to FIG. 4 or other figures. Therefore, it is possible to provide the display device 1 along the curved surface of the reflection member 121 (e.g., the windshield). The display blocks 80 can be arranged such that the deviation amount (offset amount) between a plurality of adjacent display blocks 80 is a value based on the shape of a part of the reflection member 121 that reflects light from the light-emitting element 10 (e.g., the shape of a part of the curved surface of the windshield).

[0130] For example, in Figure 7A and Figure 7B the examples shown, the combined arrangement of the support members 85 in which the display blocks 80 are arranged is arranged such that it is possible to provide the display device 1 having a shape corresponding to a windshield with different curvatures or shapes.

[0131] Furthermore, as in Figure 7C the example shown, it is also possible to arrange the display blocks 80 and the support members 85. As in Figure 7C shown, various types of support members 85 (sub-frames) with different numbers of installed display blocks can be used. Support members 85 having a length adapted to the number of display blocks 80 to be installed can be used. Furthermore, support members 85 having the same length can be used. In Figure 7C the example shown, support members 85 provided with two display blocks 80, support members 85 provided with three display blocks 80, and support members 85 provided with four display blocks 80 are used. That is, three sets of display blocks 80 and support members 85 are used. For example, when the instrument panel 122 has different shapes between the driver's seat side and the passenger's seat side, it is also possible to adapt the display device 1 to the shapes of the windshield and the instrument panel 122.

[0132] Figure 8A and Figure 8B are explanatory diagrams of an example of the arrangement of display blocks of the display device according to the embodiment. In the display device 1, a plurality of display blocks 80 adjacent to each other in the horizontal direction (row direction) may be arranged to be offset by a predetermined amount in the vertical direction (column direction) (for example, at intervals (pitches) of one pixel or multiple pixels). In Figure 8A the example shown, a plurality of display blocks 80 adjacent to each other in the X-axis direction are offset from each other by one pixel in the Y-axis direction.

[0133] In addition, as in Figure 8B the example shown, a plurality of display blocks 80 adjacent to each other in the vertical direction may be arranged to be offset by a predetermined amount in the horizontal direction. In Figure 8B the example shown, a plurality of display blocks 80 adjacent to each other in the Y-axis direction are offset from each other by one pixel in the X-axis direction.

[0134] As in Figure 8A or Figure 8B the example shown, arranging the display blocks 80 enables the display device 1 to be formed along the side surface of a windshield having various curvatures. Therefore, in the present embodiment, compared with the case where the display blocks 80 are not offset by one pixel or multiple pixels as in the comparative example shown in Figure 9B or Figure 9B , it is possible to prevent a deterioration in the image quality of the image displayed by the display device 1.

[0135] The display blocks 80 are arranged by adjusting their positions to allow the arrays of adjacent display blocks and pixels P to be continuous in the X direction and the Y direction. In this position adjustment, the adjustment is not based on the position of the edges of the display blocks 80, but is performed based on the position of the pixels P of each display block 80. Accordingly, the display blocks 80 can be arranged to allow the pixel positions to be in a continuous state among the plurality of display blocks 80 and to allow the positions of the edges of the display blocks 80 to be in a discontinuous state. When a plurality of display blocks 80 are arranged in the support member 85, the position adjustment of the display blocks 80 is performed. In addition, when arranging the support member 85 in which the display blocks 80 are arranged, the position adjustment of the display blocks 80 is also performed.

[0136] In addition, in the present embodiment, as in Figures 7A to 7C the example shown, it is possible to prepare in advance the support member 85 in which a plurality of display blocks 80 are positioned and arranged, and the plurality of support members 85 can be arranged to be offset along the reflection member 121. Therefore, it is possible to suppress the generation of gaps between a plurality of display blocks 80 adjacent to each other. This makes it possible to prevent the generation of black lines (or white lines) in the image and thus improve the display quality of the image. It becomes possible to suppress the occurrence of driver distraction.

[0137] In the case of using the support member 85 in which the display blocks 80 are arranged in a line and vertically disposed, the position of the display blocks 80 can be adjusted by offsetting each column to adapt to the curved surface of the windshield. Therefore, it is possible to obtain flexibility corresponding to windshields having various shapes. In addition, compared with manufacturing the display device 1 individually for each vehicle 120 or each reflection member 121, assembling the display device 1 using the support member 85 provided with the display blocks 80 makes it possible to significantly reduce the manufacturing cost (assembly cost).

[0138] [Structure of Pixel]

[0139] Figure 10 is an explanatory diagram of an example of a cross-sectional structure of a pixel of a display device according to an embodiment. The display device 1 includes, for example, a first substrate 101, a light-emitting element 10, a protection member 50, a second substrate 102, and a lens 61. The display device 1 has a structure in which the first substrate 101 and the second substrate 102 are stacked.

[0140] The first substrate 101 has a first surface 11S1 and a second surface 11S2 that face each other, as Figure 10 shown. The second surface 11S2 is the surface on the side opposite to the first surface 11S1. The first substrate 101 is arranged, for example, using a printed circuit board (PCB) as described above. A plurality of light-emitting elements 10 are provided on the first surface 11S1 side of the first substrate 101.

[0141] The above-described driving unit 40 can be provided on the second surface 11S2 side of the first substrate 101. It should be noted that the signal processing unit 30 can be provided in a member different from the first substrate 101 (for example, the support member 85 or the support member 90), or can be provided on the second surface 11S2 side of the first substrate 101.

[0142] In Figure 10 the example shown, a light-emitting element 10g, a light-emitting element 10b, and a light-emitting element 10r are provided for each pixel P. The protection member 50 (protective layer) is arranged, for example, using a transparent resin. The protection member 50 is provided to cover the light-emitting element 10 of each pixel P( Figure 10 the light-emitting elements 10g, 10b, and 10r in).

[0143] The protection member 50 is formed between the first substrate 101 and the second substrate 102. The protection member 50 can also be referred to as a sealing member (sealing portion) that covers the light-emitting element 10. Using a transparent resin as the protection member 50 makes it possible to increase the brightness of the light emitted by the light-emitting element 10.

[0144] The second substrate 102 has a first surface 12S1 and a second surface 12S2 that face each other. The second surface 12S2 is the surface on the opposite side of the first surface 12S1. The second substrate 102 is configured of, for example, a glass substrate. The lens 61 is provided on the side of the first surface 12S1 of the second substrate 102. The protective member 50 is provided on the side of the second surface 12S2 of the second substrate 102.

[0145] The lens 61 is an optical member that converges the light from the light-emitting element 10. The lens 61 guides the light from the light-emitting element 10 to the side of the reflection member 121 (see Figure 1 or other drawings). The lens 61 is provided above the light-emitting element 10, and is provided, for example, for each pixel P or for every plurality of pixels P. For example, a sheet 60 (film) on which a plurality of lenses 61 are provided side by side is attached to the second substrate 102.

[0146] In the display device 1 according to the present embodiment, providing the lens 61 makes it possible to efficiently guide the light from the light-emitting element 10 to the user side via the reflection member 121. This makes it possible to improve the visibility of the image.

[0147] Figure 11 is a diagram illustrating an example of the light emission luminance of the pixels of the display device according to the embodiment. The vertical axis indicates the luminance of the light from the light-emitting element 10, and the horizontal axis indicates the emission angle. The solid line indicates the case where the lens 61 is provided (the case where the light from the light-emitting element 10 is emitted via the lens 61). The broken line indicates the case where the lens 61 is not provided (the case where the light from the light-emitting element 10 is emitted without passing through the lens 61).

[0148] The lens 61 is arranged for the light-emitting element 10 of the pixel P so that the light emission intensity in the vertical direction (Z-axis direction) can be increased. It is possible to appropriately guide the light toward the eyes of the user (observer), as Figure 12 schematically shown. It becomes possible to improve the visibility of the image.

[0149] Figure 13 is an explanatory diagram of another example of the cross-sectional structure of the pixel of the display device according to the embodiment. Figure 14 is a diagram illustrating another example of the light emission luminance of the pixel. As in the example shown in Figure 13 in the plane orthogonal to the stacking direction of the light-emitting element 10 and the lens 61, the center position of the lens 61 may be different from the center position of the light-emitting element 10. For example, the position of the lens 61 for each pixel P can be appropriately changed according to the shape of the reflection member 121 (windshield), the mounting angle of the display device 1, etc.

[0150] Adjusting the relative position between the lens 61 and the light-emitting element 10 makes it possible to shift the position where the light emission intensity reaches a peak (local maximum), asFigure 14 as indicated by the solid line in Figure 14 In Figure 11 in the same manner as in the case of

[0151] The lens 61 is arranged to be offset relative to the light-emitting element 10 so that it is possible to appropriately guide light to the user's eyes in a manner corresponding to the shape of the windshield, for example, as Figure 15 indicated by the solid line in

[0152] Figures 16A to 16D are explanatory diagrams of another example of the cross-sectional structure of a pixel of the display device according to the present embodiment. In Figure 16A In the example shown in

[0153] Using a black resin as the protective member 50 makes the pixel P in the non-light-emitting state look darker while ensuring the brightness of the light emitted by the light-emitting element 10. Therefore, it is possible to improve the contrast of the image formed by the light from the display device 1, thereby making it possible to improve the image quality.

[0154] In Figure 16B In the example shown in

[0155] In Figure 16C In the example shown in Figure 16B for example, a lapping process allows the protective member 50 (which is a white resin) to be thinned. This makes the pixel P in the non-light-emitting state look darker compared to the case of

[0156] It should be noted that in the case where the protective member 50 is made of a white resin, the display device 1 may not be provided with the lens 61. For example, in the case where the light converging performance is sufficient, the lens 61 may not be deployed. In addition, as the protective member 50, a white resin, a black resin, or a transparent resin can be used. Alternatively, a mixed resin of two or more of a white resin, a black resin, or a transparent resin can be used, that is, a resin of a mixed color can be used.

[0157] The display device 1 may include a light-blocking member 55, as Figure 16D shown in the example. The light-blocking member 55 is provided to cover the periphery of the light-emitting element 10. The light-blocking member 55 is configured by an absorption member (absorbent) such as a black pigment (e.g., carbon black), and has the property of absorbing incident light. The light-blocking member 55 is referred to as a black matrix.

[0158] In Figure 16D the example shown, the third substrate 103 on which the light-blocking member 55 is formed is attached to the first substrate 101. In the display device 1, the light-blocking member 55 is provided such that the pixels P in the non-light-emitting state look darker. It is possible to improve the display quality of the image.

[0159] [Configuration of Control Unit]

[0160] Figure 17 is an explanatory diagram of a configuration example of a control unit of a display device according to an embodiment. The display device 1 includes a sensor unit 70, the above-described control unit 20, and a plurality of pixels P. It should be noted that Figure 17 illustrates some of the display blocks in the display device 1 (display blocks 80a and 80b).

[0161] The sensor unit 70 is configured to be able to generate, for example, a signal related to the state or condition of the vehicle 120 (see Figure 1 and Figure 2 ), a signal related to the state of the display device 1, or another signal as a sensor signal. As an example, the sensor unit 70 may include various sensors such as a temperature sensor, an image sensor (camera), an illuminance sensor, a color sensor, a current sensor, a voltage sensor, and a power sensor.

[0162] As Figure 17 schematically shown, the signal processing unit 30 is configured to be able to perform various types of signal processing such as input picture analysis, sensor analysis, cropping processing, image adjustment, and gamma adjustment. The signal processing unit 30 acquires a signal (picture signal) for each frame of an image (picture). The picture signal is image data (image signal), and is a signal indicating, for example, the signal value (pixel value) of each pixel within a frame period. The picture signal is a signal related to grayscale, and may also be referred to as data indicating the grayscale of each pixel.

[0163] For example, the picture signals of the corresponding frames are sequentially input into the signal processing unit 30. It should be noted that the signal processing unit 30 can acquire the picture signals generated by an external device, or the picture signals can be generated in the signal processing unit 30. For example, the signal processing unit 30 is configured to perform a process of distributing a frame of picture signal to the driving unit 40 of the corresponding display block 80. The signal processing unit 30 divides a frame of image signal into a plurality of picture signals and outputs the divided picture signals to the driving unit 40.

[0164] The signal processing unit 30 is configured to be able to perform input picture analysis processing to analyze the picture signals and control gamma adjustment and image adjustment based on the analysis results. The signal processing unit 30 can perform sensor analysis processing to analyze the sensor signals output from the sensor unit 70 and control gamma adjustment and image adjustment based on the analysis processing. In addition, the signal processing unit 30 can perform a process (function) of extracting the signal part in the picture signal for displaying (reproducing) an image, that is, clipping.

[0165] The signal processing unit 30 is configured to perform image adjustment processing (image quality adjustment processing) to change the signal format (data format) of the picture signal into a signal format suitable for displaying an image. In addition, the signal processing unit 30 can perform gamma adjustment (gamma correction) processing on the picture signal. It should be noted that the signal processing unit 30 can perform processing such as adjusting the maximum brightness, hue, gray scale expression, etc. of the picture signal data in the image quality adjustment processing or gamma adjustment processing.

[0166] The driving unit 40 includes a temperature sensor 45, as Figure 17 shown. The temperature sensor 45 is a temperature detection circuit (temperature detection part) and is configured to be able to detect the ambient temperature. The temperature sensor 45 can generate a signal (temperature signal) related to the temperature of the driving unit 40 (driver IC) and output the generated temperature signal (temperature information) to the signal processing unit 30.

[0167] It should be noted that the temperature sensor 45 can be provided outside the driving unit 40. For example, the temperature sensor 45 can be deployed around the driving unit 40 in the first substrate 101 in which the driving unit 40 is implemented. In this case, the temperature sensor 45 can generate a temperature signal and output the generated temperature signal to the driving unit 40 and the signal processing unit 30.

[0168] The control unit 20 is configured to be able to control the light-emitting element 10 of each pixel P based on the temperature signal. For example, the control unit 20 controls the current to be supplied to the light-emitting element 10 based on the temperature signal generated by each temperature sensor 45. The control unit 20 can adjust the current to be supplied to the light-emitting element 10 according to the temperature indicated by the temperature signal. This enables the display device 1 to reduce the heat generation (heat loss) of the driving unit 40.

[0169] It is possible to suppress the heat generation in the display device 1 without changing the number of light-emitting elements to be driven by the driving unit or increasing the IC size or for improving the heat dissipation characteristics. Reducing the heat generation of the driving unit 40 makes it possible to increase the driving current that can be supplied from the driving unit 40 to the light-emitting element 10. This makes it possible to achieve higher brightness, for example, by means of the increased current amount in the case of a low ambient temperature, and to prevent the circuit of the driving unit 40 from being interrupted in the case of a high ambient temperature.

[0170] As an example, the driving unit 40 is configured to control the voltage and current to be supplied to the light-emitting element 10 based on the temperature signal generated by the temperature sensor 45. The driving unit 40 performs control to reduce the current to be supplied to the light-emitting element 10 according to the temperature indicated by the temperature signal. For example, the driving unit 40 can switch the setting table (look-up table) according to the ambient temperature of the driving unit 40, so as to change the driving current of the light-emitting element 10 corresponding to the signal value (pixel value) of the pixel.

[0171] Figure 18A It is an explanatory diagram of the relationship between the input data according to the embodiment and the current supplied to the light-emitting element of the display device. In Figure 18A , the horizontal axis indicates the input data Din which is the signal value (pixel value) of the pixel P, and the vertical axis indicates the current IF to be supplied from the driving unit 40 to the light-emitting element 10. The current IF is the driving current flowing through the light-emitting element 10, as in the example shown in Figure 17 .

[0172] The storage device 41 of the driving unit 40 is configured to store data (setting table) regarding the correspondence between the signal value (pixel value) of the pixel and the current IF of the light-emitting element 10. The storage device 41 includes, for example, a non-volatile memory and stores (records) programs and data. The storage device 41 can store various types of information, such as programs and data for controlling the light-emitting element 10. The storage device 41 is a recording medium such as a semiconductor memory.

[0173] For each temperature range, the storage device 41 stores, for example, a plurality of setting tables (Table 0, Table 1, Table 2, Table 3, ....). The driving unit 40 reads and refers to the setting tables stored in the storage device 41, and performs a process of adjusting (correcting) the current to be supplied to the light-emitting element 10. In the case where the ambient temperature rises, the driving unit 40 can switch the setting table to perform control to reduce the current to be supplied to the light-emitting element 10, as Figure 18A schematically indicated by the broken-line arrow in

[0174] The driving unit 40 is configured to, for example, compare a threshold value with the temperature indicated by the temperature signal, and change the setting table based on the comparison result. The driving unit 40 can control the current flowing to the light-emitting element 10 using the setting table selected according to the ambient temperature. It should be noted that, as Figure 18B shown in Figure 18B the hysteresis of the threshold value can be set by determining different threshold values for the corresponding setting tables in the case of temperature rise (UP(↑)) and temperature fall (DOWN(↓)). In the

[0175] example shown in Figure 17 the driving unit 40 of the display block 80a can control the supply of current to the light-emitting element 10 of each pixel P of the display block 80a based on the temperature signal generated by the temperature sensor 45. In addition, the driving unit 40 of the display block 80b can control the supply of current to the light-emitting element 10 of each pixel P of the display block 80b based on the temperature signal generated by the temperature sensor 45. Depending on the temperature detected by the temperature sensor 45 for each driving unit 40, each driving unit 40 can adjust the driving current IF and effectively suppress the heat generation of the driving unit 40. In the case of high temperature, the driving unit 40 can suppress heat generation by reducing the driving current IF.

[0176] In addition, due to the temperature rise, the control of the driving current IF can be performed in the driving unit 40 having a higher temperature. In addition, the control of the driving current IF can be performed not only in the driving unit 40 having a rising temperature, but also in another driving unit 40 in which the driving unit 40 having a rising temperature is deployed in the display block 80.

[0177] For example, in all the driving units 40 in the display block 80 in which the driving unit 40 having a rising temperature is deployed, the setting table is changed to allow the driving current IF to decrease. In this case, the same setting table can be used for all the driving units 40 for which the driving current IF is decreased.

[0178] Note that the control of the drive current IF can be performed not only in the drive unit 40 having an elevated temperature, but also in another drive unit 40 of the display block 80 other than the display block 80 in which the drive unit 40 having an elevated temperature is deployed. For example, the setting table is changed to allow the drive current IF to decrease not only in the display block 80 in which the drive unit 40 having an elevated temperature is deployed, but also in all drive units 40 in the display device 1. In this case, the same setting table (the drive unit 40 in the plurality of display blocks 80) can be used for all drive units 40 that reduce the drive current IF.

[0179] The signal processing unit 30 of the control unit 20 can cause the drive unit 40 to control the current to be supplied to the light emitting element 10 based on the temperature signal generated by each temperature sensor 45. The above setting table can be stored in a memory in the signal processing unit 30, for example, stored in the storage device 31 (see Figure 17 ).

[0180] The storage device 31 of the control unit 20 is configured to be able to store data (setting table) related to the correspondence between the signal value of the pixel and the current IF to be supplied to the light emitting element 10. The storage device 31 includes, for example, a non-volatile memory and stores programs and data. The storage device 31 can store various types of information, such as programs and data for controlling the drive unit 40. The storage device 31 is a recording medium such as a semiconductor memory.

[0181] The control unit 20 controls the current to be supplied to the light emitting element 10 by each drive unit 40 based on the temperature signal generated by each temperature sensor 45. The control unit 20 can control each drive unit 40 of the display block 80a based on the temperature signal generated by the temperature sensor 45 of the display block 80a, and can adjust the current to each light emitting element 10 of the display block 80a. In addition, the control unit 20 can control each drive unit 40 of the display block 80b based on the temperature signal generated by the temperature sensor 45 of the display block 80b, and can adjust the current to each light emitting element 10 of the display block 80b.

[0182] Note that the control unit 20 can compare one or more of the thresholds with the temperatures of the corresponding drive units 40 detected by the corresponding temperature sensors 45, and can simultaneously (in parallel) change the setting tables set in the corresponding drive units 40 according to the comparison results. The control unit 20 can be configured to be able to set a separate setting table for the corresponding light emitting elements 10 of the corresponding colors to adapt to the characteristics of the light emitting elements 10r, 10g, and 10b of the corresponding colors (R / G / B).

[0183] Figure 19 is a flowchart illustrating an operation example of the display system according to the embodiment. Refer toFigure 19 The flowchart of Figure 19 gives a description of an operation example of the display system 200. For example, when a picture signal is input to the display device 1 after activating the application (system) of the display device 1, Figure 19 the flowchart of Figure 19 starts.

[0184] The control unit 20 of the display device 1 (the signal processing unit 30 and the driving unit 40) refers to, for example, a setting table stored in the storage device 31 (or the storage device 41), and selects and sets a threshold value and a setting table to be used as initial settings.

[0185] In step S11, the control unit 20 determines whether the input picture signal is normal. When the determination result in step S11 is negative (\"No\" in step S11), the process proceeds to step S12. For example, when the picture signal is a signal indicating a full white screen for a certain period of time (that is, a signal indicating that all the light emitting elements 10 are driven with a current IF which is 100% of the maximum current), the control unit 20 makes a negative determination in step S11.

[0186] In step S12, the control unit 20 performs an exception process. The control unit 20 notifies the user that an abnormality has been detected through an indicator, sound, image, etc. After step S12, the process returns to step S11.

[0187] When the determination result in step S11 is positive (\"Yes\" in step S11), the process proceeds to step S13. In step S13, the control unit 20 acquires the temperature signal generated by the temperature sensor 45 and reads the ambient temperature. After step S13, the process proceeds to step S14.

[0188] In step S14, the control unit 20 selects a setting table according to the temperature indicated by the temperature signal, and sets and updates the setting table. In step S15, the control unit 20 supplies the current IF to each light emitting element 10 based on the setting table set in step S14, thereby controlling the light emission of each light emitting element 10 and displaying an image.

[0189] After step S15, the display system 200 completes Figure 19 the process shown in the flowchart of Figure 19 . It should be noted that when a picture signal is input to the signal processing unit 30, the control unit 20 of the display device 1 can re - execute Figure 19 the process shown in the flowchart of Figure 19 .

[0190] Figure 20 is a diagram showing an example of the arrangement of sensors of the display device according to the embodiment. Various sensors of the above - mentioned sensor unit 70 can be arranged, for example, an illuminance sensor, a color sensor, a camera, etc., as Figure 20As shown. For example, an illuminance sensor, a camera, etc. can be arranged on the back of the rearview mirror of the vehicle 120 to measure the area in front of the vehicle 120.

[0191] The control unit 20 of the display device 1 can be based on the results of the measurements performed by the sensor unit 70. For example, the signal processing unit 30 (or the driving unit 40) can use an illuminance sensor, a color sensor, a camera (image sensor), etc. to obtain information such as the brightness, background color, shape and position of an object, etc. for each display area to perform image control.

[0192] Figure 21A and Figure 21B are explanatory diagrams of examples of image control performed by the display device according to the embodiment. The control unit 20 can control the brightness (luminance) of the image, the size of the image, the display position of the image, etc. based on the temperature signal detected by the temperature sensor 45. For example, the signal processing unit 30 of the control unit 20 can determine the control content of the image according to the priority of the image. The signal processing unit 30 can perform different image controls according to the type of content to be displayed.

[0193] In Figure 21A In the example shown, the display device 1 displays a warning mark 131 (reminder) and another image 132 (e.g., the content of a moving image) in a manner that superimposes them on the actual image in front of the vehicle 120 observed through the windshield as a reflection member 121. When the temperature of the display device 1 rises due to the influence of direct sunlight, etc., the signal processing unit 30 (or the driving unit 40) can perform a process of reducing the brightness of the image 132 with a lower priority among the warning mark 131 and the image 132. It is possible to suppress the rise in temperature while maintaining the brightness of the warning mark 131 with a higher priority.

[0194] The signal processing unit 30 may not impose a brightness limit on image information such as warning images (e.g., an oncoming vehicle that stops when turning right, or a displayed object such as a bicycle to be overtaken) or information regarding route guidance (e.g., direction indications such as turning left, turning right, etc.). For example, when the temperature of the display device 1 rises, the signal processing unit 30 can impose a brightness limit on the content that has less impact on safety.

[0195] As an example, as Figure 21B shown, when the temperature rises in the upper left area A1, the signal processing unit 30 can change the display position of the warning mark 131 to the lower left area. In addition, the signal processing unit 30 can reduce the size of the image 132 with a relatively lower priority and change the display position of the image 132 to the lower right area.

[0196] Figures 22A to 22CExplanatory diagram of another example of image control performed by a display device according to an embodiment. The signal processing unit 30 may adjust the brightness of the image for each display block on the screen (e.g., for each display block 80 or for every plurality of display blocks 80) according to the ambient temperature. The signal processing unit 30 may adjust the brightness or color in each display block according to the brightness of each display area of the image.

[0197] As Figure 22A in the example shown, the signal processing unit 30 may adjust the brightness of the image etc. based on the brightness of each display block from one side to the other side of the windshield. This makes it possible to effectively improve the image quality of the image. In Figure 22A the example shown, the signal processing unit 30 may use a sensor signal etc. to determine the brightness distribution of each display block from the air area to the road area, and may set the brightness, color etc. of the image for each display block. The signal processing unit 30 may change the brightness etc. of each display block according to the illumination distribution of the background.

[0198] As Figure 22B shown, when a part of the vehicle body (e.g., the hood, dashboard, etc.) is reflected in a part of the display area (e.g., Figure 22B the area A2 shown), the display device 1 may adjust the image in area A2 (e.g., change the display color) taking into account the color of this part of the vehicle body.

[0199] In addition, as Figure 22C in the example shown, a printed member (black print 140) for the screen may be deployed in the area on the lower side of the windshield. In this case, the display device 1 is capable of projecting an image on the windshield and the black print 140.

[0200] Figure 23 Explanatory diagram of an arrangement example of sensors of a display device according to an embodiment. As Figure 23 in the example shown, for example, a voltage sensor among various sensors of the above sensor unit 70 may be coupled between the battery of the vehicle 120 and the power supply circuit for the display device 1. In addition, a current sensor may be provided for Figure 23 the node N1 shown. For example, the signal processing unit 30 may adjust the brightness of the image etc. according to the voltage of the battery of the vehicle 120 detected by the voltage sensor.

[0201] When the battery level of the vehicle 120 decreases, the signal processing unit 30 can reduce the brightness of images with lower priorities. Adjusting the drive current of the light-emitting element 10 in consideration of the battery voltage makes it possible to suppress a decrease in the brightness of images with higher priorities. It should be noted that the signal processing unit 30 can adjust the brightness of images and the like based on the current consumption detected by the current sensor.

[0202] In addition, for example, the signal processing unit 30 can use the current flowing through Figure 23 the node N1 shown in (i.e., the current supplied to the display device 1) and the voltage of the node N1 to estimate the remaining battery level. When using the current (IA) flowing through the node N1, the voltage VA of the node N1, and the efficiency η, the power consumed on the display device 1 side (display power) can be expressed by the following expression.

[0203] Display power = (VA × IA / η)

[0204] The signal processing unit 30 can adjust the brightness of images according to the estimated remaining battery level. Adjusting the drive current of the light-emitting element 10 according to the remaining battery level makes it possible to suppress deterioration of the image quality of images with higher priorities. In addition, the area to be displayed can be adjusted. Adjusting the brightness and the display area makes it possible to prevent necessary information from being invisible when the brightness decreases.

[0205] Figure 24 FIG. is an example showing a state transition of a drive unit of a display device according to an embodiment. The drive unit 40 can have a standby function. In the standby state (standby mode), for example, the DAC, amplifier circuit, etc. inside the drive unit 40 enter a stopped state. In the standby state, the drive unit 40 has less (lower) power consumption compared to the active state (active mode), and enters a power-saving state.

[0206] For example, when the picture signal assigned to the drive unit 40 is a signal indicating all black as shown in Figure 24 , the signal processing unit 30 can set the drive unit 40 from the active state to the standby state. In addition, when the picture signal assigned to the drive unit 40 is a signal indicating all white as shown in Figure 24 , the signal processing unit 30 can set the drive unit 40 from the standby state to the active state. Controlling the state of the drive unit 40 makes it possible to reduce the power consumption of the display device 1.

[0207] Note that the signal processing unit 30 can control the states of the driving units 40 for each display block 80. For example, the signal processing unit 30 places each of the multiple driving units 40 in the display block 80 in a standby state according to the input image signal, thereby making it possible to effectively reduce power consumption. In addition, standby control can be performed on each driving unit 40, but standby control can also be performed on each display block 80.

[0208] [Principle of operation and effects]

[0209] The display device (display device 1) according to the present embodiment includes a first display block (display block 80) and a second display block. The first display block (display block 80) includes a plurality of light-emitting elements (light-emitting elements 10) provided to be arranged in a first direction (for example, the X-axis direction) and a second direction (for example, the Y-axis direction) intersecting the first direction. The second display block includes a plurality of light-emitting elements provided to be arranged in the first direction and the second direction. The first display block and the second display block are deployed adjacent to each other in the first direction and are offset from each other by a predetermined amount in the second direction.

[0210] The display device 1 according to the present embodiment is provided with a plurality of display blocks 80, and each display block includes a plurality of light-emitting elements 10. The plurality of display blocks 80 adjacent to each other in the first direction (for example, the X-axis direction) are arranged to be offset from each other by a predetermined amount in the second direction (for example, the Y-axis direction). This enables the display device 1 to be provided along the curved surface of the reflection member 121 (for example, the windshield), thereby making it possible to achieve a larger screen and higher brightness. It becomes possible to realize a display device 1 with high display performance.

[0211] The display device (display device 1) according to the present embodiment includes a plurality of display blocks (display blocks 80), a temperature sensor (temperature sensor 45), and a control unit (control unit 20). Each of the plurality of display blocks (display blocks 80) has a plurality of light-emitting elements (light-emitting elements 10). The temperature sensor (temperature sensor 45) is provided for each display block and is capable of generating a first signal (temperature signal) related to the ambient temperature. The control unit (control unit 20) is capable of controlling the light-emitting elements based on the first signal.

[0212] In the display device 1 according to the present embodiment, the control unit 20 (signal processing unit 30, driving unit 40, etc.) controls the light-emitting elements 10 based on the temperature signal generated by the temperature sensor 45. Therefore, it is possible to suppress heat generation in the display device 1. It becomes possible to improve the display performance of the display device 1.

[0213] Next, a description of a modification example of the present disclosure is given. Hereinafter, components similar to those of the foregoing embodiment are denoted by the same reference numerals, and their descriptions are appropriately omitted.

[0214] <2. Modified Examples>

[0215] (2-1. Modified Example 1)

[0216] Figure 25A and Figure 25B are each an explanatory diagram of a configuration example of a display system according to Modified Example 1 of the present disclosure. The display system 200 may include a louver 150, as in Figure 25A and Figure 25B shown in the example. The louver 150 is provided on, for example, the display device 1. The louver 150 may be deployed to cover the entire top surface of the display device 1.

[0217] Figure 26A and Figure 26B are each an explanatory diagram of the behavior of the display system 200 according to the embodiments shown in Figure 1 or other drawings. Figure 26A and Figure 26B The display system 200 shown in does not include the louver 150 on the display device 1. In this case, as in Figure 26A and Figure 26B shown, unnecessary light from the display device 1 may leak into the surrounding environment, which may cause driver distraction. In contrast, in the display system 200 of Modified Example 1 shown in Figure 25A and Figure 25B , the louver 150 is provided, which suppresses unnecessary light from leaking into the surrounding environment, thereby making it possible to suppress the occurrence of driver distraction.

[0218] (2-2. Modified Example 2)

[0219] Figure 27A and Figure 27B are each an explanatory diagram of a configuration example of a display system according to Modified Example 2. The display system 200 may include a polarizing plate 160 and a λ / 2 plate 165. The polarizing plate 160 is provided on the display device 1. The polarizing plate 160 is deployed to cover, for example, the entire top surface of the display device 1. The λ / 2 plate 165 is deployed on the windshield as the reflection member 121 on the side of the display device 1.

[0220] In Figure 27A and Figure 27B shown in the example, for example, a part of the S-polarized light output from the display device 1 via the polarizing plate 160 is reflected by the surface of the windshield to become P-polarized light outside. This P-polarized light is reflected by the λ / 2 plate 165 toward the outside of the windshield. Therefore, it is possible to suppress the occurrence of double images and thus improve the image quality.

[0221] (2-3. Modified Example 3)

[0222] Figures 28 to 30 These are explanatory diagrams of a structural example of the display device according to Modification Example 3. In addition to the support member 85 that is a sub-frame to which the display block 80 (panel) is attached and the support member 90 that is a main frame to which the support member 85 is attached, the display device 1 may further include a member (referred to as the connector substrate 95) attached to the support member 90. The connector substrate 95 is configured using, for example, a plurality of printed circuit boards and may also be referred to as a connector frame. It should be noted that in addition to this structure of Modification Example 3, a light shield may be used as in Modification Example 1, or a polarizing plate may be used as in Modification Example 2. For example, the display device 1 and the display system 200 may include the above-described light shield 150 and may include a polarizing plate 160 and a λ / 2 plate 165.

[0223] As Figure 28 In the example shown, for example, the connector substrate 95 is attached to the side opposite to the front surface side of the support member 90, which is the side to which a plurality of support members 85 are attached (i.e., the side of the rear surface of the support member 90). The above-described signal processing unit 30 is provided on the side of the rear surface of the connector substrate 95. The signal processing unit 30 may be deployed on the rear surface of the connector substrate 95 for each of a plurality of driving units 40 (i.e., for each predetermined number of driving units 40).

[0224] The display device 1 may include a shielding cover on the rear surface side of the connector substrate 95. The shielding cover is, for example, a shielding member configured using a metal material and is attached to the rear surface of the connector substrate 95. Providing the shielding cover makes it possible to take countermeasures against EMC (electromagnetic compatibility).

[0225] The connector 25 is provided on the rear surface side of the display block 80 (i.e., on the surface side of the display block 80 opposite to the support member 85). As Figure 29 In the example shown. The connector 25 is deployed on the rear surface (back surface) of the display block 80 and is coupled to the driving unit 40. The connector 25 is provided around the driving unit 40, for example, and is electrically coupled to the terminals of the driving unit 40 (driver IC).

[0226] The display block 80, the support member 85, and the support member 90 are respectively provided with holes 15a, 15b, and 15c, as Figure 28 In the example shown in and other drawings. The holes 15a to 15c are each holes (holes) through which a flexible substrate (or connector cable) passes and may be referred to as through-holes. The signal processing unit 30 of the connector substrate 95 is electrically coupled to the connector 25 of the display block 80 via a flexible substrate (or connector cable).

[0227] The signal processing unit 30 is electrically coupled to the driving unit 40 via a flexible substrate (or a connector cable) and a connector 25, and can send and receive signals such as a picture signal (image data) and a temperature signal (temperature information). As described above, for example, the signal processing unit 30 generates a picture signal for each frame and outputs the picture signal to each driving unit 40 via the flexible substrate and the connector 25.

[0228] As Figure 29 In the example shown in, the display block 80 has a plurality of screw holes 16a. The screw holes 16a are, for example, non-through screw holes and are provided in the substrate of the display block 80. In Figure 29 In the example shown in, the screw holes 16a are provided in the upper region, the lower region, the left region, and the right region with respect to the middle portion of the display block 80.

[0229] The support member 85 has a plurality of screw holes 16b. The screw holes 16b are through holes and are provided so as to penetrate the support member 85. The screw holes 16b are provided to correspond to the screw holes 16a of the display block 80. The screw holes 16b are formed at positions corresponding to the screw holes 16a. The screw holes 16b of the support member 85 have a size (diameter) larger than the size of the screw holes 16a. The screw holes 16b are formed around the hole 15a in the support member 85, for example, as Figure 29 In the example shown in or other drawings.

[0230] The size of the screw holes 16b provided for the support member 85 is larger than the size of the screw holes 16a provided for the display block 80. This makes it possible to move the display block 80 while keeping the screws in a temporarily fixed state and adjust the position of the display block 80. It is possible to adjust the position of the display block 80 and thus suppress the generation of gaps between a plurality of adjacent display blocks 80.

[0231] For example, the size (area) of the support member 85 can be smaller than the total size of a plurality of display blocks 80 (for example, four display blocks 80) attached to the support member 85. This makes it possible to suppress the generation of gaps between a plurality of adjacent display blocks 80.

[0232] In addition, the support member 85 has a plurality of screw holes 17a. The screw holes 17a are non-through screw holes and can be provided near the upper side, the left and right sides, and the lower side of the support member 85, for example, as Figure 29 and Figure 30 In the example shown in. As an example, as Figure 30 In the example shown in, the support member 85 has six screw holes 17a.

[0233] The support member 90 has a plurality of screw holes 17b. The screw holes 17b are through screw holes and are provided to penetrate the support member 90. The screw holes 17b are provided to correspond to the screw holes 17a of the support member 85. The screw holes 17b are formed at positions corresponding to the screw holes 17a. The screw holes 17b have a size (diameter) larger than the size of the screw holes 17a.

[0234] The size of the screw holes 17b provided for the support member 90 is larger than the size of the screw holes 17a provided for the support member 85, which makes it possible to move the support member 85 while keeping the screws in a temporarily fixed state and adjust the position of the support member 85. It is possible to position each support member 85 and thus improve the display quality of the image.

[0235] Next, a description of an example of the method of assembling the display device 1 shown in Figures 28 to 30 is given. The display block 80 (panel) provided with the drive unit 40 is positioned on the support member 85 which is a sub-frame. Screws are inserted into the screw holes 16b and 16a, and washers are inserted therebetween, and the screws are gently tightened to put the display block 80 in a temporarily fixed state.

[0236] Moving the temporarily fixed display block 80 in the left-right direction ( Figure 2 or the left-right direction of the vehicle 120 shown in other drawings) allows adjustment of the position of the display block 80, thereby allowing adjustment of the pixel arrangement (pixel position) in the up-down direction (the front-rear direction of the vehicle 120). Then, after further tightening the temporarily fixed screws, the position of the display block 80 is fixed using an adhesive of a thermosetting resin.

[0237] Next, the support member 85 on which the display block 80 is mounted is positioned on the support member 90 which is a main frame. Then, screws are inserted into the screw holes 17b and 17a, washers are interposed therebetween, and the screws are gently tightened to put the support member 85 in a temporarily fixed state.

[0238] Moving the temporarily fixed support member 85 in the up-down direction to adjust the position of the support member 85 allows adjustment of the pixel arrangement (pixel position) in the left-right direction. Then, after further tightening the temporarily fixed screws, the position of the support member 85 is fixed using a thermosetting resin as an adhesive.

[0239] Next, one end of the flexible substrate is coupled to the connector 25 of the display block 80, and the other end of the flexible substrate is coupled to a connector (not shown) provided in the connector substrate 95. After attaching the connector substrate 95 (connector frame) to the support member 90, a shielding cover is attached to the rear surface side of the connector substrate 95. It should be noted that configurations denoted by the same numbers (symbols) as those in the foregoing embodiments or modified examples are similar to the configurations in the foregoing embodiments or modified examples. Descriptions of configurations with the same numbers as those in the foregoing embodiments and modified examples are the same as those in the embodiments or modified examples.

[0240] (2-4. Modified Example 4)

[0241] In the foregoing embodiment, an example in which the display device 1 includes the support member 85 (sub-frame) has been described, but the display device 1 may be configured not to include the support member 85. Figures 31 to 34 These are explanatory diagrams of a structural example of the display device according to Modified Example 4. The display device 1 may include, for example, a frame member 111, a frame member 112, and a frame member 113. It should be noted that, in addition to this structure of Modified Example 4, a light-shielding plate may be used as in Modified Example 1, or a polarizing plate may be used as in Modified Example 2. For example, the display device 1 and the display system 200 may include the above-described light-shielding plate 150, and may include a polarizing plate 160 and a λ / 2 plate 165.

[0242] The frame member 111 is a member that can be attached to the display block 80. As an example, the frame member 111 is attached to the display block 80 by an adhesive 37 (for example, an adhesive including a thermosetting resin), as Figure 31 shown. For example, the frame member 111 adheres to the peripheral portion along the side surface of the display block 80, with the adhesive 37 therebetween. In addition, the frame member 111 has a plurality of screw holes 38a. The screw holes 38a are, for example, non-through screw holes.

[0243] In Figure 31 the example shown, four drive units 40 are mounted on the display block 80. In addition, a plurality of studs 35 are attached to the display block 80. The studs 35 are components having screw holes and are used to attach the support member 90. The studs 35 are fixed to the display block 80 using solder, for example. As an example, four studs 35 are arranged on the display block 80.

[0244] The frame member 112 is a member attachable to the frame member 111. The frame member 112 has a plurality of screw holes 38b. The screw holes 38b are through holes and are provided to penetrate the frame member 112. The screw holes 38b are provided to correspond to the screw holes 38a of the frame member 111. Screws are inserted into the screw holes 38b and the screw holes 38a to allow the frame member 112 to be attached to the frame member 111.

[0245] The frame member 113 is arranged to couple a plurality of adjacent display blocks 80 to each other, as Figure 32 in the example shown. The frame member 113 is fixed by an adhesive 38 on the frame member 112 between two adjacent display blocks 80, for example, as Figure 32 in the example schematically shown. Two display blocks 80 adjacent to each other in the left - right direction (or up - down direction) are coupled (linked) to each other by the frame member 113.

[0246] The support member 90 is configured, for example, using a metallic material and has a high heat conduction efficiency. As an example, the support member 90 is provided with the above - mentioned holes 15c for each display block 80. The holes 15c are holes through which a flexible substrate (or a connector cable) passes, and the flexible substrate (or the connector cable) electrically couples a connector deployed in the display block 80 to a connector deployed in the connector substrate 95.

[0247] The support member 90 is provided with a plurality of screw holes 36. The screw holes 36 are through holes and are provided to penetrate the support member 90. The screw holes 36 are provided to correspond to the studs 35 of the display block 80. Screws are inserted into the screw holes 36 and the screw holes of the studs 35 to allow the display block 80 to be attached to the support member 90.

[0248] A plurality of display blocks 80 coupled to the intervening frame member 113 are attached to the support member 90. The support member 90 may have a raised portion 91, which is configured to be able to contact the drive unit 40, as Figure 33 and Figure 34 in the example shown. The raised portion 91 is a heat - conducting portion (heat - conducting member) and is provided at a position corresponding to the drive unit 40. The raised portion 91 is a protruding structural portion and may also be referred to as a protruding portion.

[0249] The raised portion 91 (raised portion area) contacts the drive unit 40 of the display block 80 while allowing the display block 80 to be in a state attached to the support member 90. This makes it possible, for example, to diffuse (radiate) the heat of the drive unit 40 (driver IC) to the entire support member 90. It is possible to suppress heat accumulation in the drive unit 40 and thus prevent thermal runaway.

[0250] Each of the plurality of display blocks 80 of the display device 1 is coupled to another display block 80 via a frame member 113 or the like. Using the frame member 113 enables attachment and detachment of each display block 80. It becomes possible to replace, repair, etc. in units of the display block 80.

[0251] Next, a description of an example of a method of assembling the display device 1 shown Figures 31 to 34 is given. First, studs 35 are deployed in the display block 80 on which a plurality of drive units 40 are mounted using solder. Then, the frame member 111 is attached to the display block 80 using an adhesive 37 (e.g., a thermosetting resin).

[0252] Next, the screw hole 38a of the frame member 111 and the screw hole 38b of the frame member 112 are positioned relative to each other. Then, screws are attached to the screw hole 38b and the screw hole 38a to fix the frame member 112 to the frame member 111. Further, the display block 80 is moved to adjust the array (pixel positions) of the pixels of each display block 80 in the vertical and horizontal directions. Thereafter, the frame member 113 is fixed to the frame member 112 using an adhesive 38.

[0253] Then, after inserting screws into the screw holes 36 of the support member 90 and the screw holes of the studs 35 and tightening the screws, the position of the display block 80 is fixed on the support member 90 using an adhesive. Then, the connector 25 of the display block 80 ( Figure 33 not shown) is electrically coupled to the connector of the connector substrate 95 using a flexible substrate. After attaching the connector substrate 95 to the support member 90, a shielding cover is attached to the rear surface side of the connector substrate 95. It should be noted that the description of the components with the same numbers as those in the foregoing embodiment and Modification Example 3 is the same as the description of those components in the embodiment and Modification Example 3.

[0254] (2-5. Modification Example 5)

[0255] Figure 35 FIG. 36 are each an explanatory diagram of an operation example of the display device according to Modification Example 5. In the same manner as in the case of the foregoing embodiment and Modification Examples 1 to 4, the display device 1 is configured to cause the respective drive units 40 of the plurality of display blocks 80 to drive the light-emitting elements 10 of each pixel P and be able to display an image in each display block area. The display device 1 in this example may be one of the display devices described in the foregoing embodiment and Modification Examples 1 to 4. In addition, this operation example can be appropriately combined with the operations described in the embodiment.

[0256] For example, the control unit 20 (or the signal processing unit 30) causes the driving unit 40 to control the light-emitting elements 10 of each pixel P for each display block 80, so that the driving unit 40 performs sequential scanning and displays an image in a region-corresponding unit. In addition, when a plurality of driving units 40 are arranged for each display block 80, the control unit 20 may be configured to be able to independently control the plurality of driving units 40 of each display block 80.

[0257] As Figure 35 In the example schematically shown in, the signal processing unit 30 of the control unit 20 may control a plurality of driving units 40 (for example, six driving units 40) of each display block 80, and may perform image control to scan each display block (perform scanning on it). Independently controlling the plurality of driving units 40 in each display block 80 makes it possible to perform image control in units of finer blocks, and thus achieve lower power consumption.

[0258] The signal processing unit 30 is configured to be able to control the state of the driving unit 40 of each display block 80 according to the picture signal (image data) of the image to be displayed. For example, the signal processing unit 30 may set the driving unit 40 of the unused display block 80 used as a black display area among the plurality of display blocks 80 to a standby state (standby mode) as described above.

[0259] For example, in the case of displaying the arrow L1 as shown in Figure 36A , the signal processing unit 30 sets the driving unit 40 in the display block 80 other than the display block 80 ([[]] Figure 36A Six display blocks 80 in) displaying the image of the arrow L1 to a standby state. In addition, as schematically shown in Figure 36B , the signal processing unit 30 may operate some of the driving units 40 corresponding to the area of the arrow L1 among the plurality of driving units 40 of the corresponding display block 80, and may put the other driving units 40 into a standby state.

[0260] It should be noted that the driving unit 40 of the corresponding display block 80 may each include a terminal (STANBY terminal) to be used for setting the standby state. For example, the signal processing unit 30 may control the voltage input to the STANBY terminal of the driving unit 40 to set the driving unit 40 to a standby state.

[0261] A determination may be made as to whether the driving unit 40 transitions to the standby state. For example, when the picture signal in a certain frame indicates all black and the picture signal in the next frame is not received, the driving unit 40 may transition to the standby state. Controlling the state of the driving unit 40 as described above makes it possible to reduce the power consumption of the display device 1.

[0262] (2-6. Modified Example 6)

[0263] Figures 37A to 37C These are explanatory diagrams of the operation examples of the display device according to Modification Example 6. The display device 1 in this example can be one of the display devices described in the foregoing embodiments and Modification Examples 1 to 4. The control unit 20 can be configured to be able to control the brightness (luminance), color, display position, etc. of the image based on the brightness around the vehicle 120. For example, the control unit 20 (or the signal processing unit 30) can use the sensor signals output from the cameras, image sensors, etc. of the sensor unit 70 to grasp the brightness, color, etc. of the scene (background) outside the vehicle in each display block, and can adjust the brightness, color, size, etc. of the image to be displayed. In addition, this operation example can be used in a manner appropriately combined with the operations described as another example in the embodiment or Modification Example 5.

[0264] The control unit 20 is configured to be able to control the supply of current to the light-emitting element 10 of the display block 80 based on the sensor signal related to the brightness around the vehicle 120. For example, the control unit 20 can be configured to adjust the value (pixel value) of each pixel of the image based on the sensor signal to control the light-emitting element 10.

[0265] The control unit 20 can acquire a picture signal (image data) obtained by photographing the outside of the vehicle with a camera (image sensor) as a sensor signal, and can control the light-emitting element 10 of each display block 80 according to the brightness and color around the vehicle 120 indicated by the sensor signal. It becomes possible to control the light emission of each light-emitting element 10 according to the brightness, etc. around the vehicle 120, and thus ensure the visibility of the image.

[0266] In Figure 37A In the example shown, an image of an arrow L2 having the same color as the grassland is displayed in the grassland area near the road, which makes it difficult for the user (observer) to see the arrow L2 in some cases. In Figure 37A In the example shown, the arrow L2 is in a state of blending into the background grassland area.

[0267] For example, the signal processing unit 30 of the control unit 2 can adjust the current supplied from the drive unit 40 to the light-emitting element 10 to perform a process of increasing the brightness of the image of the arrow L2. In addition, the signal processing unit 30 can perform processes such as marginalization of the arrow L2 and size change of the arrow L2 according to the brightness and color around the vehicle 120. Performing such a process makes it possible to improve the visibility of the image of the arrow L2, as in Figure 37B In the example shown.

[0268] In addition, the signal processing unit 30 may perform processing to adjust the display position of the image according to the brightness outside the vehicle or the like. As an example, the signal processing unit 30 may change the display position of the image of the arrow L2 from the grass area to the air area, as Figure 37C shown. Displaying the arrow L2 in a display block having a color different from the color of the arrow L2 makes it possible to enhance the visibility of the arrow L2.

[0269] Figure 38 is a flowchart showing an operation example of the display system according to Modification Example 6. Refer to Figure 38 the flowchart for a description of the operation example of the display system 200. For example, when the image signal S1 for display is input to the display device 1 after activating the application of the display device 1, Figure 38 the flowchart starts.

[0270] For example, the control unit 20 of the display device 1 refers to the setting table stored in the storage device 31 (or the storage device 41), and selects and sets the threshold value and the setting table to be used as the initial settings. In addition, the control unit 20 acquires the picture signal S2 from the sensor unit 70, and the picture signal S2 is a sensor signal obtained by photographing a block in front of the vehicle 120 or the like.

[0271] In step S21, the control unit 20 determines whether the input picture signal S1 is normal. If the determination result in step S21 is negative (\"No\" in step S21), the process proceeds to step S22. For example, when the image signal S1 is a signal indicating a full white screen for a certain period of time (that is, a signal indicating that all the light emitting elements 10 are driven with a current of 100% of the maximum current IF), the control unit 20 makes a negative determination in step S21.

[0272] In step S22, the control unit 20 performs exception handling. The control unit 20 notifies the user of the detected abnormality through an indicator, sound, image, etc. After step S22, the process returns to step S21.

[0273] If the determination result in step S21 is positive (\"Yes\" in step S21), the process proceeds to step S23. In step S23, the control unit 20 acquires the temperature signal generated by the temperature sensor 45 and reads the ambient temperature. After step S23, the process proceeds to step S24. In step S24, the control unit 20 selects the setting table according to the temperature indicated by the temperature signal, and sets and updates the setting table.

[0274] In step S25, the control unit 20 determines whether the brightness of the image indicated by the picture signal S1 is darker than the brightness of the image (background image) indicated by the picture signal S2, and whether the hue of the image indicated by the picture signal S1 is close to the hue of the image indicated by the picture signal S2. When the determination result in step S25 is affirmative ( "Yes" in step S25), the process proceeds to step S27.

[0275] When the determination result in step S25 is negative ( "No" in step S25), the process proceeds to step S26. When it is determined in step S25 that the brightness of the image indicated by the picture signal S1 is darker than the brightness of the image indicated by the picture signal S2, the process proceeds to step S26.

[0276] In addition, when it is determined in step S25 that the hue of the image indicated by the picture signal S1 is close to the hue of the image indicated by the picture signal S2, the process also proceeds to step S26. In step S26, the control unit 20 performs processing to improve the visibility of the picture signal S1, such as processing to change the brightness, size, etc. of the image indicated by the picture signal S1, and processing to change the display position of the image.

[0277] In step S27, the control unit 20 calculates the power consumption of the display device 1 when the image indicated by the picture signal S1 is displayed. In addition, in step S27, the control unit 20 determines whether the calculated power consumption is equal to or less than the allowable power. When the determination result in step S27 is affirmative ( "Yes" in step S27), the process proceeds to step S29.

[0278] When the determination result in step S27 is negative ( "No" in step S27), the process proceeds to step S28. In step S28, the control unit 20 performs processing to adjust the brightness of the image indicated by the picture signal S1 so that the power consumption of the display device 1 is equal to or less than the allowable power. After step S28, the process returns to step S27.

[0279] In step S29, the control unit 20 supplies the current IF to each light-emitting element 10 based on the picture signal S1 and the setting table set in step S24, thereby controlling the light emission of each light-emitting element 10 and displaying the image.

[0280] After step S29, the display system 200 completes Figure 38 the processing shown in the flowchart. It should be noted that when the picture signal S1 is input to the signal processing unit 30, the control unit 20 of the display device 1 can re-execute Figure 38 the processing shown in the flowchart.

[0281] Figure 39AAnd Figure 39B These are explanatory diagrams of another operation example of the display device according to Modification Example 6. The control unit 20 can perform image control based on the allowable values of power and brightness around the vehicle 120. The control unit 20 (or the signal processing unit 30) is configured to be able to control the brightness (luminance) of the image, the color of the image, the size of the image, etc. based on the allowable value of the output power (power consumption) set in the vehicle 120.

[0282] The signal processing unit 30 of the control unit 20 is configured to control the supply of current to the light-emitting elements 10 of each display block 80 according to the allowable value of power. For example, the signal processing unit 30 can set the pixel value of each pixel so that the power consumption of the display device 1 does not exceed the allowable value, and can adjust the current supplied to each light-emitting element 10.

[0283] For example, the signal processing unit 30 sets the smaller value between the allowable value Pa of power set in the vehicle 120 and the allowable value Pb of power calculated by the display device 1 as the allowable value P1. The signal processing unit 30 can perform image control so that the power consumption (power usage) of the display device 1 does not exceed the allowable value P1. The allowable value Pa is, for example, an available power value set based on the state of the vehicle 120. The allowable value Pa varies according to the remaining battery level, operation mode, etc.

[0284] The allowable value Pb is, for example, a limit value of power usage set to protect the device, and is determined by the display device 1 based on the ambient temperature. As an example, the control unit 20 (or the signal processing unit 30) sets the allowable value Pb according to the above temperature signal (temperature information). If a large amount of current is applied to the device when the device is in an abnormally high temperature state, the device may malfunction or be damaged. Accordingly, when the ambient temperature becomes higher, for example, the signal processing unit 30 adjusts the allowable value Pb of power to be smaller.

[0285] In addition, the signal processing unit 30 is configured to be able to control the brightness (luminance) of the image based on the priority of the image. For example, the signal processing unit 30 can perform processing to reduce the brightness of an image with a lower priority among multiple types of images to be displayed. In a state where the available power value is set, the brightness of the image with a lower priority is reduced while ensuring the brightness of the image with a higher priority (importance), so that it is possible to set the power consumption to a value equal to or less than the allowable value P1.

[0286] In Figure 39A the example shown, the display device 1 displays the images 132a and 132b (for example, still image content or moving image content with a lower priority) and the image 133 of the instrument information in a manner superimposed on the actual image in front of the vehicle 120. In the warning mark 131 (reminder) as Figure 39BIn the case shown in the figure, the signal processing unit 30 performs processing to reduce the brightness of images 132a and 132b whose priorities are lower than that of the warning mark 131.

[0287] It becomes possible to limit the power consumption to a value equal to or less than the allowable value P1 while ensuring the brightness of the image of the warning mark 131 with a higher priority. Note that examples of images with a higher priority include the image 134 of navigation information, the right-turn (or left-turn) mark 135, and the images 136a and 136b indicating object detection, as Figure 40A and Figure 40B shown in the figure.

[0288] Figure 41 is a flowchart showing an operation example of the display system according to Modification Example 6. Refer to Figure 41 the flowchart for a description of the operation example of the display system 200. For example, when a picture signal is input to the display device 1 after activating the application of the display device 1, Figure 41 the flowchart starts.

[0289] In step S31, the control unit 20 determines whether the input picture signal is normal. If the determination result in step S31 is affirmative (''No'' in step S31), the process proceeds to step S32. In step S32, the control unit 20 performs exception handling. After step S32, the process returns to step S31.

[0290] If the determination result in step S31 is affirmative (''Yes'' in step S31), the process proceeds to step S33. In step S33, the control unit 20 acquires the temperature signal generated by the temperature sensor 45 and reads the ambient temperature. After step S33, the process proceeds to step S34. In step S34, the control unit 20 selects a setting table according to the temperature indicated by the temperature signal and sets and updates the setting table.

[0291] In step S35, the control unit 20 calculates the power consumption of the display device 1 when displaying the image indicated by the picture signal. Further, in step S35, the control unit 20 determines whether the calculated power consumption is equal to or less than the allowable value P1. If the determination result in step S35 is affirmative (''Yes'' in step S35), the process proceeds to step S39. If the determination result in step S35 is negative (''No'' in step S35), the process proceeds to step S36.

[0292] In step S36, the control unit 20 determines whether an image with a higher priority is included in the images indicated by the picture signal. When the determination result in step S36 is affirmative ("Yes" in step S36), the process proceeds to step S37. When the determination result in step S36 is negative ("No" in step S36), the process proceeds to step S38.

[0293] In step S37, the control unit 20 performs a process of adjusting the brightness of images other than the image with a higher priority so that the power consumption of the display device 1 is equal to or less than the allowable value P1. After step S37, the process returns to step S35. In step S38, the control unit 20 performs a process of uniformly adjusting the brightness of the entire image indicated by the picture signal so that the power consumption of the display device 1 is equal to or less than the allowable value P1. After step S38, the process returns to step S35.

[0294] In step S39, the control unit 20 supplies a current IF to each light-emitting element 10 based on the picture signal and the setting table set in step S34, thereby controlling the light emission of each light-emitting element 10 and displaying an image.

[0295] After step S39, the display system 200 completes Figure 41 the process shown in the flowchart. It should be noted that when a picture signal is input to the signal processing unit 30, the control unit 20 of the display device 1 can re-execute Figure 41 the process shown in the flowchart.

[0296] (2-7. Modification Example 7)

[0297] In the foregoing embodiments and modification examples, structural examples of the display system 200 and the display device 1 have been described, but these structural examples are merely exemplary; the structural examples of the display system 200 and the display device 1 are not limited to the above examples. For example, it may be possible to use a reflection member other than the windshield as the reflection member 121, such as, for example, a rear window, a reflector (combiner), or a ceiling window. In addition, the light-emitting element 10 may be an organic EL (electroluminescence) element. In addition, a liquid crystal display element may be used as the light-emitting element 10.

[0298] In the foregoing embodiment, an example has been described in which the support member 85 (sub-frame) to which the display block 80 is attached is attached to the support member 90 (main frame). The display block 80 does not necessarily need to be attached to the support member 90 with the support member 85 inserted therebetween, but may be directly attached to the support member 90.

[0299] (2-8. Modification Example 8)

[0300] The display system and display device of the present disclosure can be applied to various types of vehicles. For example, as in the technologies disclosed in the foregoing embodiments and modification examples, the technology according to the present disclosure can be applied to various vehicles, such as BEV (battery electric vehicle), HEV (hybrid electric vehicle), and PHV (plug-in hybrid electric vehicle). The technology according to the present disclosure can be applied to vehicles adaptable to level 2 or higher or level 4 or higher autonomous driving. In addition, the display system and display device of the present disclosure can be used not only during driving but also during parking or stopping.

[0301] <3. Practical application examples>

[0302] (Examples of practical applications to moving bodies)

[0303] The technology according to the present disclosure (this technology) is applicable to a variety of products. For example, the technology according to the present disclosure can be implemented as a device installed on any type of moving body such as an automobile, an electric vehicle, a hybrid electric vehicle, a motorcycle, a bicycle, a personal mobility device, an aircraft, a drone, a ship, or a robot.

[0304] Figure 42 is a block diagram showing an example of the schematic configuration of a vehicle control system, which is an example of a moving body control system to which the technology of the embodiments according to the present disclosure can be applied.

[0305] The vehicle control system 12000 includes a plurality of electronic control units connected to each other via a communication network 12001. In Figure 42 the example depicted, the vehicle control system 12000 includes a drive system control unit 12010, a body system control unit 12020, an out-of-vehicle information detection unit 12030, an in-vehicle information detection unit 12040, and an integrated control unit 12050. In addition, a microcomputer 12051, a sound / image output unit 12052, and an in-vehicle network interface (I / F) 12053 are shown as functional configurations of the integrated control unit 12050.

[0306] The drive system control unit 12010 controls the operation of devices related to the drive system of the vehicle according to various programs. For example, the drive system control unit 12010 serves as a control device for a driving force generation device (such as an internal combustion engine, a drive motor, etc.) that generates the driving force of the vehicle, a driving force transmission mechanism that transmits the driving force to the wheels, a steering mechanism that adjusts the steering angle of the vehicle, a braking device that generates the braking force of the vehicle, and the like.

[0307] The vehicle body system control unit 12020 controls the operations of various devices provided to the vehicle body according to various programs. For example, the vehicle body system control unit 12020 serves as a control device for a keyless entry system, a smart key system, an electric window device, or various lights such as headlights, reverse lights, brake lights, turn signals, fog lights, and so on. In this case, radio waves transmitted from a mobile device as an alternative to signals of a key or various switches can be input to the vehicle body system control unit 12020. The vehicle body system control unit 12020 receives these input radio waves or signals and controls the vehicle door lock device, the electric window device, the lights, etc.

[0308] The out-of-vehicle information detection unit 12030 detects information about the outside of the vehicle including the vehicle control system 12000. For example, the out-of-vehicle information detection unit 12030 is connected to the imaging unit 12031. The out-of-vehicle information detection unit 12030 causes the imaging unit 12031 to image an image of the outside of the vehicle and receives the imaged image. Based on the received image, the out-of-vehicle information detection unit 12030 can perform processing for detecting objects such as people, vehicles, obstacles, signs, characters on the road surface, etc., or processing for detecting the distance to it.

[0309] The imaging unit 12031 is an optical sensor that receives light and outputs an electrical signal corresponding to the amount of received light. The imaging unit 12031 can output the electrical signal as an image, or can output the electrical signal as information about the measured distance. In addition, the light received by the imaging unit 12031 can be visible light, or can be invisible light such as infrared light.

[0310] The in-vehicle information detection unit 12040 detects information about the inside of the vehicle. The in-vehicle information detection unit 12040 is connected, for example, to a driver state detection unit 12041 that detects the state of the driver. The driver state detection unit 12041 includes, for example, a camera that images the driver. Based on the detection information input from the driver state detection unit 12041, the in-vehicle information detection unit 12040 can calculate the degree of driver fatigue or the driver's attention, or can determine whether the driver is dozing off.

[0311] The microcomputer 12051 can calculate control target values for a driving force generation device, a steering mechanism, or a braking device based on information about the inside or outside of the vehicle obtained by the out-of-vehicle information detection unit 12030 or the in-vehicle information detection unit 12040, and output a control command to the drive system control unit 12010. For example, the microcomputer 12051 can perform cooperative control for implementing functions of an advanced driver assistance system (ADAS), the functions of which include vehicle collision avoidance or shock absorption, following driving based on a following distance, vehicle speed maintenance driving, warning of vehicle collision, warning of vehicle lane departure, etc.

[0312] In addition, the microcomputer 12051 can perform cooperative control of autonomous driving that aims to automatically drive the vehicle without depending on the driver's operation by controlling a driving force generation device, a steering mechanism, a braking device, etc. based on information about the outside or inside of the vehicle obtained by the outside vehicle information detection unit 12030 or the inside vehicle information detection unit 12040.

[0313] In addition, the microcomputer 12051 can output a control command to the vehicle body system control unit 12020 based on information about the outside of the vehicle obtained by the outside vehicle information detection unit 12030. For example, the microcomputer 12051 can perform cooperative control aiming to prevent glare by controlling the headlamp to switch from the high beam to the low beam according to the position of a preceding vehicle or an oncoming vehicle detected by the outside vehicle information detection unit 12030, for example.

[0314] The sound / image output unit 12052 transmits an output signal of at least one of sound and image to an output device capable of visually or auditorily notifying information to the occupants of the vehicle or the outside of the vehicle. In Figure 42 the example, the audio speaker 12061, the display unit 12062, and the instrument panel 12063 are shown as output devices. The display unit 12062 can include, for example, at least one of an in-vehicle display and a head-up display.

[0315] Figure 43 is a diagram depicting an example of the installation position of the imaging unit 12031.

[0316] In Figure 43 , the imaging unit 12031 includes imaging units 12101, 12102, 12103, 12104, and 12105.

[0317] The imaging units 12101, 12102, 12103, 12104, 12105 are deployed, for example, at positions on the front nose, side mirrors, rear bumper, rear door of the vehicle 12100, and the upper part of the windshield inside the vehicle. The imaging unit 12101 provided to the front nose and the imaging unit 12105 provided to the upper part of the windshield inside the vehicle mainly obtain images in front of the vehicle 12100. The imaging units 12102 and 12103 provided to the side mirrors mainly obtain images on the sides of the vehicle 12100. The imaging unit 12104 provided to the rear bumper or the rear door mainly obtains images behind the vehicle 12100. The imaging unit 12105 provided to the upper part of the windshield inside the vehicle is mainly used to detect a preceding vehicle, a pedestrian, an obstacle, a traffic signal, a traffic sign, a lane, etc.

[0318] Incidentally, Figure 43An example of the imaging ranges of the imaging units 12101 to 12104 is depicted. The imaging range 12111 represents the imaging range of the imaging unit 12101 provided for the front nose. The imaging ranges 12112 and 12113 represent the imaging ranges of the imaging units 12102 and 12103 provided for the side mirrors, respectively. The imaging range 12114 represents the imaging range of the imaging unit 12104 provided for the rear bumper or the rear door. For example, a bird's-eye view image of the vehicle 12100 viewed from above is obtained by superimposing the image data imaged by the imaging units 12101 to 12104.

[0319] At least one of the imaging units 12101 to 12104 may have a function of obtaining distance information. For example, at least one of the imaging units 12101 to 12104 may be a stereo camera composed of a plurality of imaging elements, or may be an imaging element having pixels for phase difference detection.

[0320] For example, the microcomputer 12051 may determine the distance to each three-dimensional object within the imaging ranges 12111 to 12114 and the temporal change of the distance (relative speed with respect to the vehicle 12100) based on the distance information obtained from the imaging units 12101 to 12104, and thereby extract the nearest three-dimensional object traveling in substantially the same direction as the vehicle 12100 at a predetermined speed (e.g., equal to or greater than 0 km / h) particularly on the traveling path of the vehicle 12100 as the preceding vehicle. In addition, the microcomputer 12051 may preset the following distance maintained in front of the preceding vehicle and execute automatic braking control (including following stop control), automatic acceleration control (including following start control), etc. Therefore, it is possible to execute cooperative control of autonomous driving aimed at automatically driving the vehicle without depending on the driver's operation or the like.

[0321] For example, the microcomputer 12051 may classify the three-dimensional object data of the three-dimensional objects into two-wheeled vehicles, standard-sized vehicles, large vehicles, pedestrians, utility poles, and other three-dimensional objects based on the distance information obtained from the imaging units 12101 to 12104, extract the classified three-dimensional object data, and use the extracted three-dimensional object data for automatic avoidance of obstacles. For example, the microcomputer 12051 identifies the obstacles around the vehicle 12100 as obstacles that can be visually recognized by the driver of the vehicle 12100 and obstacles that are difficult for the driver of the vehicle 12100 to visually recognize. Then, the microcomputer 12051 determines the collision risk indicating the risk of collision with each obstacle. In the case where the collision risk is equal to or higher than the set value and thus there is a possibility of collision, the microcomputer 12051 outputs a warning to the driver via the audio speaker 12061 or the display unit 12062 and executes forced deceleration or avoidance steering via the driving system control unit 12010. The microcomputer 12051 can thereby assist driving to avoid collision.

[0322] At least one of the imaging units 12101 to 12104 may be an infrared camera that detects infrared rays. For example, the microcomputer 12051 may identify a pedestrian by determining whether there is a pedestrian in the imaged images of the imaging units 12101 to 12104. Such identification of the pedestrian is performed, for example, by a process of extracting feature points in the imaged images of the imaging units 12101 to 12104 that are infrared cameras and by a process of performing pattern matching processing on a series of feature points representing the outline of an object to determine whether it is a pedestrian. When the microcomputer 12051 determines that there is a pedestrian in the imaged images of the imaging units 12101 to 12104 and thus identifies the pedestrian, the sound / image output unit 12052 controls the display unit 12062 so that a square contour line for emphasis is displayed so as to be superimposed on the identified pedestrian. The sound / image output unit 12052 may also control the display unit 12062 so that an icon or the like representing the pedestrian is displayed at a desired position.

[0323] The description of the mobile body control system to which the technology according to the embodiments of the present disclosure can be applied has been given above. The technology according to the embodiments of the present disclosure can be applied to, for example, the display unit 12062 having the above configuration. Specifically, for example, the display device 1 or the like can be applied to the display unit 12062. Applying the technology according to the embodiments of the present disclosure to the display unit 12062 enables the realization of driving assistance and driving experience suitable for the mobile body control system.

[0324] Although the present disclosure has been described above with reference to embodiments, modification examples, and practical application examples, the present technology is not limited to the foregoing embodiments and the like, and can be modified in various ways. For example, although the foregoing modification examples have been described as modification examples of the foregoing embodiments, the configurations of the corresponding modification examples can be appropriately combined.

[0325] It should be noted that the effects described herein are merely exemplary and are not limited to this description, and may also include other effects. In addition, the present disclosure may also have the following configurations. (1)

[0327] A display device, comprising:

[0328] A first display block including a plurality of light-emitting elements arranged in a first direction and a second direction intersecting the first direction; and

[0329] A second display block including a plurality of light-emitting elements arranged in the first direction and the second direction, wherein

[0330] The first display block and the second display block are arranged adjacent to each other in the first direction and are offset from each other by a predetermined amount in the second direction. (2)

[0332] The display device according to (1), wherein

[0333] the first display block and the second display block each include a plurality of pixels, each pixel including a light-emitting element, and

[0334] the first display block and the second display block are offset from each other in the second direction by one pixel or a plurality of pixels. (3)

[0336] The display device according to (1) or (2), wherein the offset amount between the first display block and the second display block is a value based on the shape of a part of a reflection member that reflects light from the light-emitting element. (4)

[0338] The display device according to any one of (1) to (3), wherein the offset amount between the first display block and the second display block is a value based on the shape of a part of a curved surface of a windshield, the windshield being a reflection member that reflects light from the light-emitting element. (5)

[0340] The display device according to any one of (1) to (4), comprising a plurality of display blocks, the plurality of display blocks including the first display block and the second display block and being arranged in a first direction and a second direction. (6)

[0342] The display device according to any one of (1) to (5), comprising a plurality of first support members, each first support member including a plurality of display blocks arranged in the second direction. (7)

[0344] The display device according to (6), comprising a second support member, the second support member including the plurality of first support members arranged continuously in the first direction. (8)

[0346] The display device according to (7), wherein the plurality of first support members are arranged along a curved surface of the second support member. (9)

[0348] The display device according to any one of (1) to (8), wherein

[0349] the first display block and the second display block each include a plurality of pixels, each pixel including a light-emitting element, and

[0350] each pixel of the plurality of pixels includes a lens that converges light from the light-emitting element. (10)

[0352] The display device according to (9), wherein in a plane orthogonal to the stacking direction of the light-emitting element and the lens, the center position of the lens is different from the center position of the light-emitting element. (11)

[0354] The display device according to any one of (1) to (10), including a protection member provided to cover the light-emitting element, wherein

[0355] The protection member is made of a transparent resin, a white resin, a black resin, or a mixed resin. (12)

[0357] The display device according to any one of (1) to (11), including a light-shielding member provided to cover the periphery of the light-emitting element. (13)

[0359] The display device according to any one of (1) to (12), wherein each of the first display block and the second display block includes a drive circuit configured to drive the light-emitting element. (14)

[0361] The display device according to any one of (1) to (13), wherein each of the light-emitting elements includes a light-emitting diode. (15)

[0363] The display device according to any one of (1) to (14), wherein the area of the plurality of light-emitting elements in a region corresponding to a pixel of an image is in a range of 20% or more and 30% or less with respect to the area of the region. (16)

[0365] The display device according to any one of (1) to (15), including a first support member to which the plurality of display blocks including the first display block are attached, wherein

[0366] The display block has a first screw hole,

[0367] The first support member has a second screw hole provided to correspond to the first screw hole, and

[0368] The size of the second screw hole is larger than the size of the first screw hole. (17)

[0370] The display device according to (16), including a second support member to which the plurality of first support members are attached, wherein

[0371] The first support member has a third screw hole,

[0372] The second support member has a fourth screw hole corresponding to the third screw hole, and

[0373] The size of the fourth screw hole is larger than that of the third screw hole. (18)

[0375] A display device according to any one of (1) to (15), comprising a frame member arranged to couple a plurality of adjacent display blocks to each other. (19)

[0377] The display device according to (18) comprises a second support member including the plurality of display blocks coupled to each other, and the frame member is interposed between the plurality of display blocks. (20)

[0379] The display device according to (19), wherein

[0380] each of the plurality of display blocks includes the plurality of light-emitting elements and a driving circuit configured to drive the light-emitting elements, and

[0381] the second support member is made of a metal material and has a protruding portion configured to contact the driving circuit of the display block. (21)

[0383] A display system, comprising:

[0384] a display device; and

[0385] a reflection member that reflects light from the display device,

[0386] the display device includes

[0387] a first display block including a plurality of light-emitting elements arranged in a first direction and a second direction intersecting the first direction; and

[0388] a second display block including a plurality of light-emitting elements arranged in the first direction and the second direction, wherein

[0389] the first display block and the second display block are arranged adjacent to each other in the first direction and are offset from each other by a predetermined amount in the second direction. (22)

[0391] The display system according to (21), wherein

[0392] the first display block and the second display block include a plurality of pixels, each pixel including a light-emitting element, and

[0393] the first display block and the second display block are offset from each other by one pixel or a plurality of pixels in the second direction. (23)

[0395] A display system according to (21) or (22), wherein

[0396] The reflecting member includes the windshield of the vehicle, and

[0397] The first display block and the second display block are arranged along the curved surface of the windshield. (24)

[0399] A display system according to any one of (21) to (23), wherein

[0400] The reflecting member includes the windshield of the vehicle, and

[0401] The display device is provided on or in the instrument panel of the vehicle from one side of the windshield to the other side. (25)

[0403] A display system according to any one of (21) to (24), including a visor provided on the display device. (26)

[0405] A display system according to any one of (21) to (25), including:

[0406] A polarizing plate provided on the display device; and

[0407] A λ / 2 plate provided on the windshield as a reflecting member. (27)

[0409] A display system according to any one of (21) to (26), wherein the area of the plurality of light-emitting elements in the region corresponding to the pixels of the image is in the range of 20% or more and 30% or less with respect to the area of the region. (28)

[0411] A display system according to any one of (21) to (27), including a first support member, to which the plurality of display blocks including the first display block are attached, wherein

[0412] The display block has a first screw hole,

[0413] The first support member has a second screw hole provided to correspond to the first screw hole, and

[0414] The size of the second screw hole is larger than the size of the first screw hole. (29)

[0416] The display system according to (28), including a second support member, to which the plurality of first support members are attached, wherein

[0417] The first support member has a third screw hole,

[0418] the second support member has a fourth screw hole corresponding to the third screw hole, and

[0419] the size of the fourth screw hole is larger than the size of the third screw hole. (30)

[0421] A display system according to any one of (21) to (27), comprising a frame member arranged to couple a plurality of adjacent display blocks to each other. (31)

[0423] The display system according to (30), comprising a second support member including the plurality of display blocks coupled to each other, the frame member being interposed between the plurality of display blocks. (32)

[0425] The display system according to (31), wherein

[0426] each of the plurality of display blocks includes the plurality of light-emitting elements and a driving circuit configured to drive the light-emitting elements, and

[0427] the second support member is made of a metal material and has a protruding portion configured to contact the driving circuit of the display block.

[0428] This application claims the benefit of Japanese Priority Patent Application JP2022-212774, filed with the Japan Patent Office on December 28, 2022, the entire contents of which are incorporated herein by reference.

[0429] Those skilled in the art should understand that various modifications, combinations, sub-combinations, and changes may occur according to design requirements and other factors, as long as they are within the scope of the appended claims or their equivalents.

Claims

1. A display device, comprising: a first display block including a plurality of light-emitting elements arranged in a first direction and a second direction intersecting the first direction; and a second display block including a plurality of light-emitting elements arranged in the first direction and the second direction, wherein the first display block and the second display block are arranged adjacent to each other in the first direction and are offset from each other by a predetermined amount in the second direction.

2. The display device according to claim 1, wherein the first display block and the second display block include a plurality of pixels, each pixel including the light-emitting element, and the first display block and the second display block are offset from each other in the second direction by one pixel or a plurality of pixels.

3. The display device according to claim 1, wherein the offset amount between the first display block and the second display block is a value based on the shape of a part of a reflection member that reflects light from the light-emitting element.

4. The display device according to claim 1, wherein the offset amount between the first display block and the second display block is a value based on the shape of a part of a curved surface of a windshield, the windshield being a reflection member that reflects light from the light-emitting element.

5. The display device according to claim 1, including a plurality of display blocks including the first display block and the second display block and arranged in the first direction and the second direction.

6. The display device according to claim 1, including a plurality of first support members, each first support member including a plurality of display blocks arranged in the second direction.

7. The display device according to claim 6, including a second support member including the plurality of first support members arranged continuously in the first direction.

8. The display device according to claim 7, wherein the plurality of first support members are arranged along a curved surface of the second support member.

9. The display device according to claim 1, wherein the first display block and the second display block include a plurality of pixels, each pixel including the light-emitting element, and each of the plurality of pixels includes a lens that converges light from the light-emitting element.

10. The display device according to claim 9, wherein in a plane orthogonal to the stacking direction of the light-emitting element and the lens, a center position of the lens is different from a center position of the light-emitting element.

11. The display device according to claim 1, including a protection member configured to cover the light-emitting element, wherein the protection member is made of a transparent resin, a white resin, a black resin, or a mixed resin.

12. The display device according to claim 1, including a light-shielding member configured to cover a periphery of the light-emitting element.

13. The display device according to claim 1, wherein the first display block and the second display block each include a drive circuit configured to drive the light-emitting element.

14. The display device according to claim 1, wherein each of the light-emitting elements includes a light-emitting diode.

15. A display system, comprising: a display device; and a reflection member that reflects light from the display device, wherein the display device includes a first display block including a plurality of light-emitting elements arranged in a first direction and a second direction intersecting the first direction; and a second display block including a plurality of light-emitting elements arranged in the first direction and the second direction, wherein the first display block and the second display block are arranged adjacent to each other in the first direction and are offset from each other by a predetermined amount in the second direction.

16. The display system according to claim 15, wherein the first display block and the second display block include a plurality of pixels, each pixel including the light-emitting element, and the first display block and the second display block are offset from each other in the second direction by one pixel or a plurality of pixels.

17. The display system according to claim 15, wherein the reflection member includes a windshield of a vehicle, and the first display block and the second display block are arranged along a curved surface of the windshield.

18. The display system according to claim 15, wherein the reflection member includes a windshield of a vehicle, and the display device is provided on or in an instrument panel of the vehicle from one side to the other side of the windshield.

19. The display system according to claim 15, including a visor provided on the display device.

20. The display system according to claim 15, comprising: a polarizing plate provided on the display device; and a λ / 2 plate provided on the windshield as the reflection member.

Images