WO2024143543A1 - 表示装置および表示システム - Google Patents
表示装置および表示システム Download PDFInfo
- Publication number
- WO2024143543A1 WO2024143543A1 PCT/JP2023/047288 JP2023047288W WO2024143543A1 WO 2024143543 A1 WO2024143543 A1 WO 2024143543A1 JP 2023047288 W JP2023047288 W JP 2023047288W WO 2024143543 A1 WO2024143543 A1 WO 2024143543A1
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- WIPO (PCT)
- Prior art keywords
- display
- light
- display device
- emitting element
- image
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
- B60K35/20—Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor
- B60K35/21—Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor using visual output, e.g. blinking lights or matrix displays
- B60K35/23—Head-up displays [HUD]
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/33—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/001—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes using specific devices not provided for in groups G09G3/02 - G09G3/36, e.g. using an intermediate record carrier such as a film slide; Projection systems; Display of non-alphanumerical information, solely or in combination with alphanumerical information, e.g. digital display on projected diapositive as background
- G09G3/002—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes using specific devices not provided for in groups G09G3/02 - G09G3/36, e.g. using an intermediate record carrier such as a film slide; Projection systems; Display of non-alphanumerical information, solely or in combination with alphanumerical information, e.g. digital display on projected diapositive as background to project the image of a two-dimensional display, such as an array of light emitting or modulating elements or a CRT
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
- G09G5/10—Intensity circuits
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2300/00—Aspects of the constitution of display devices
- G09G2300/02—Composition of display devices
- G09G2300/026—Video wall, i.e. juxtaposition of a plurality of screens to create a display screen of bigger dimensions
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/04—Maintaining the quality of display appearance
- G09G2320/041—Temperature compensation
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
- G09G2330/02—Details of power systems and of start or stop of display operation
- G09G2330/026—Arrangements or methods related to booting a display
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
- G09G2330/04—Display protection
- G09G2330/045—Protection against panel overheating
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2380/00—Specific applications
- G09G2380/10—Automotive applications
Definitions
- This disclosure relates to a display device and a display system.
- a display device has been proposed in which multiple display elements are arranged non-uniformly so that a target image can be displayed (Patent Document 1).
- a display device includes a plurality of display blocks each having a plurality of light-emitting elements, a temperature sensor provided for each display block and capable of generating a first signal related to the ambient temperature, and a control unit capable of controlling the light-emitting elements based on the first signal.
- a display system including a display device and a reflecting member for reflecting light from the display device.
- the display device includes a plurality of display blocks each having a plurality of light-emitting elements, a temperature sensor provided for each display block and capable of generating a first signal related to an ambient temperature, and a controller capable of controlling the light-emitting elements based on the first signal.
- FIG. 1 is a diagram illustrating an example of a configuration of a display system according to an embodiment of the present disclosure.
- FIG. 2 is a diagram illustrating a configuration example of a display system according to an embodiment of the present disclosure.
- FIG. 3 is a block diagram illustrating a configuration example of a display device according to an embodiment of the present disclosure.
- FIG. 4A is a diagram illustrating a configuration example of a display device according to an embodiment of the present disclosure.
- FIG. 4B is a diagram illustrating a configuration example of a display device according to an embodiment of the present disclosure.
- FIG. 5A is a diagram illustrating a configuration example of a display block of a display device according to an embodiment of the present disclosure.
- FIG. 1 is a diagram illustrating an example of a configuration of a display system according to an embodiment of the present disclosure.
- FIG. 2 is a diagram illustrating a configuration example of a display system according to an embodiment of the present disclosure.
- FIG. 3 is a block diagram
- FIG. 5B is a diagram illustrating a configuration example of a display block of the display device according to the embodiment of the present disclosure.
- FIG. 6A is a diagram showing an example of an arrangement of light-emitting elements in a display device according to an embodiment of the present disclosure.
- FIG. 6B is a diagram showing an example of an arrangement of light-emitting elements in the display device according to the embodiment of the present disclosure.
- FIG. 6C is a diagram showing an example of an arrangement of light-emitting elements in a display device according to an embodiment of the present disclosure.
- FIG. 6D is a diagram showing an example of an arrangement of light-emitting elements in a display device according to an embodiment of the present disclosure.
- FIG. 6A is a diagram showing an example of an arrangement of light-emitting elements in a display device according to an embodiment of the present disclosure.
- FIG. 6B is a diagram showing an example of an arrangement of light-emitting elements in the display device according to the embodiment of the present disclosure.
- FIG. 6E is a diagram showing an example of an arrangement of light-emitting elements in a display device according to an embodiment of the present disclosure.
- FIG. 6F is a diagram showing an example of an arrangement of light-emitting elements in a display device according to an embodiment of the present disclosure.
- FIG. 6G is a diagram showing an example of an arrangement of light-emitting elements in a display device according to an embodiment of the present disclosure.
- FIG. 6H is a diagram for explaining a configuration example of a display device according to an embodiment of the present disclosure.
- FIG. 6I is a diagram for explaining a configuration example of a display device according to an embodiment of the present disclosure.
- FIG. 7A is a diagram illustrating a configuration example of a display device according to an embodiment of the present disclosure.
- FIG. 7A is a diagram illustrating a configuration example of a display device according to an embodiment of the present disclosure.
- FIG. 7B is a diagram illustrating a configuration example of a display device according to an embodiment of the present disclosure.
- FIG. 7C is a diagram illustrating a configuration example of a display device according to an embodiment of the present disclosure.
- FIG. 8A is a diagram for explaining an example of an arrangement of display blocks in a display device according to an embodiment of the present disclosure.
- FIG. 8B is a diagram for explaining an example of an arrangement of display blocks in the display device according to the embodiment of the present disclosure.
- FIG. 9A is a diagram for explaining an example of an arrangement of display blocks in a display device according to a comparative example of the present disclosure.
- FIG. 9B is a diagram for explaining an example of an arrangement of display blocks in a display device according to a comparative example of the present disclosure.
- FIG. 9A is a diagram for explaining an example of an arrangement of display blocks in a display device according to a comparative example of the present disclosure.
- FIG. 9B is a diagram for explaining an example of an arrangement of
- FIG. 10 is a diagram for explaining an example of a cross-sectional configuration of a pixel of a display device according to an embodiment of the present disclosure.
- FIG. 11 is a diagram illustrating an example of the emission luminance of a pixel of a display device according to an embodiment of the present disclosure.
- FIG. 12 is a diagram for explaining an example of the emission luminance of a pixel of a display device according to an embodiment of the present disclosure.
- FIG. 13 is a diagram for explaining another example of a cross-sectional configuration of a pixel of a display device according to an embodiment of the present disclosure.
- FIG. 14 is a diagram showing another example of the emission luminance of the pixels of the display device according to the embodiment of the present disclosure.
- FIG. 11 is a diagram illustrating an example of the emission luminance of a pixel of a display device according to an embodiment of the present disclosure.
- FIG. 12 is a diagram for explaining an example of the emission luminance of a pixel of a display device according to an embodiment
- FIG. 15 is a diagram for explaining another example of the emission luminance of a pixel of the display device according to the embodiment of the present disclosure.
- FIG. 16A is a diagram for explaining another example of a cross-sectional configuration of a pixel of a display device according to an embodiment of the present disclosure.
- FIG. 16B is a diagram for explaining another example of a cross-sectional configuration of a pixel of the display device according to the embodiment of the present disclosure.
- FIG. 16C is a diagram for explaining another example of a cross-sectional configuration of a pixel of a display device according to an embodiment of the present disclosure.
- FIG. 16D is a diagram for explaining another example of a cross-sectional configuration of a pixel of a display device according to an embodiment of the present disclosure.
- FIG. 16A is a diagram for explaining another example of a cross-sectional configuration of a pixel of a display device according to an embodiment of the present disclosure.
- FIG. 16B is a diagram for explaining another example of
- FIG. 21B is a diagram for explaining an example of image control by the display device according to the embodiment of the present disclosure.
- FIG. 22A is a diagram for explaining an example of image control by a display device according to an embodiment of the present disclosure.
- FIG. 22B is a diagram for explaining an example of image control by the display device according to the embodiment of the present disclosure.
- FIG. 22C is a diagram for explaining an example of image control by the display device according to the embodiment of the present disclosure.
- FIG. 23 is a diagram for explaining an example of the arrangement of sensors in the display device according to the embodiment of the present disclosure.
- FIG. 24 is a diagram illustrating an example of a state transition of a drive unit of a display device according to an embodiment of the present disclosure.
- FIG. 25A is a diagram for explaining a configuration example of a display system according to Modification 1 of the present disclosure.
- FIG. 25B is a diagram for explaining a configuration example of a display system according to Modification 1 of the present disclosure.
- FIG. 26A is a diagram for explaining the behavior of the display system shown in FIG.
- FIG. 26B is a diagram for explaining the behavior of the display system shown in FIG.
- FIG. 27A is a diagram for explaining a configuration example of a display system according to Modification 2 of the present disclosure.
- FIG. 27B is a diagram for explaining a configuration example of a display system according to Modification 2 of the present disclosure.
- FIG. 28 is a diagram for explaining a configuration example of a display device according to the third modification of the present disclosure.
- FIG. 28 is a diagram for explaining a configuration example of a display device according to the third modification of the present disclosure.
- FIG. 29 is a diagram for explaining a configuration example of a display device according to the third modification of the present disclosure.
- FIG. 30 is a diagram for explaining a configuration example of a display device according to the third modification of the present disclosure.
- FIG. 31 is a diagram for explaining a configuration example of a display device according to the fourth modification of the present disclosure.
- FIG. 32 is a diagram for explaining a configuration example of a display device according to the fourth modification of the present disclosure.
- FIG. 33 is a diagram for explaining a configuration example of a display device according to the fourth modification of the present disclosure.
- FIG. 34 is a diagram for explaining a configuration example of a display device according to the fourth modification of the present disclosure.
- FIG. 30 is a diagram for explaining a configuration example of a display device according to the fourth modification of the present disclosure.
- FIG. 35 is a diagram for explaining an example of the operation of the display device according to the fifth modification of the present disclosure.
- FIG. 36A is a diagram for explaining an example of operation of a display device according to Modification 5 of the present disclosure.
- FIG. 36B is a diagram for explaining an example of operation of the display device according to the fifth modification of the present disclosure.
- FIG. 37A is a diagram for explaining an example of operation of the display device according to the sixth modification of the present disclosure.
- FIG. 37B is a diagram for explaining an example of operation of the display device according to the sixth modification of the present disclosure.
- FIG. 37C is a diagram for explaining an example of operation of the display device according to the sixth modification of the present disclosure.
- FIG. 36A is a diagram for explaining an example of operation of a display device according to Modification 5 of the present disclosure.
- FIG. 36B is a diagram for explaining an example of operation of the display device according to the fifth modification of the present disclosure.
- FIG. 37A is a diagram for explaining an example
- FIG. 38 is a flowchart showing an example of the operation of the display system according to the sixth modification of the present disclosure.
- FIG. 39A is a diagram for explaining another operation example of the display device according to the sixth modification of the present disclosure.
- FIG. 39B is a diagram for explaining another operation example of the display device according to the sixth modification of the present disclosure.
- FIG. 40A is a diagram for explaining another operation example of the display device according to the sixth modification of the present disclosure.
- FIG. 40B is a diagram for explaining another operation example of the display device according to the sixth modification of the present disclosure.
- FIG. 41 is a flowchart showing an example of the operation of the display system according to the sixth modification of the present disclosure.
- FIG. 42 is a block diagram showing an example of a schematic configuration of a vehicle control system.
- FIG. 43 is an explanatory diagram showing an example of the installation positions of the outside-vehicle information detection unit and the imaging unit.
- Preferred embodiment 1 and 2 are diagrams for explaining a configuration example of a display system according to an embodiment of the present disclosure.
- the display system 200 includes a display device 1 and a reflective member 121.
- the display device 1 has a plurality of pixels P each having a light-emitting element 10, and is configured to be capable of displaying an image.
- the light-emitting element 10 is, for example, an LED (Light Emitting Diode).
- the plurality of light-emitting elements 10 are arranged in a matrix.
- no reflector or magnifying mirror is provided between the display device 1 and the reflecting member 121. Therefore, the light from the display device 1 is emitted directly to the reflecting member 121 without passing through a reflector or magnifying mirror.
- multiple light-emitting elements 10 are arranged two-dimensionally in the X-Y direction shown in FIG. 1.
- the left-right direction on the paper perpendicular to the X-axis direction is the Y-axis direction
- the direction perpendicular to the X-axis and Y-axis is the Z-axis direction.
- directions may be indicated based on the directions of the arrows in FIG. 1.
- the display device 1 can generate light using the light-emitting elements 10 and radiate the light to the outside.
- the display device 1 can display an image (e.g., a color image) by controlling the light emission of the light-emitting elements 10 of each pixel P.
- the display device 1 can emit light that displays an image to the reflective member 121.
- the display device 1 can also be said to be a light source (light source unit) that can output light that displays an image.
- the reflective member 121 is a member that reflects light from the display device 1.
- the reflective member 121 is the front window (also called the windshield, windshield, etc.) of the vehicle 120.
- the reflective member 121 reflects a portion of the light incident from the display device 1 toward the user (observer).
- the image light projected by the display device 1 is guided toward the user's eyes by the reflecting member 121.
- the reflecting member 121 reflects the light emitted from the display device 1 toward the user, and can form a virtual image 130 of the image displayed by the display device 1.
- the display system 200 displays an image displayed on the display device 1 as a virtual image 130 using the reflecting member 121.
- the user i.e., the passenger (driver, passenger), can visually recognize the image projected by the display device 1 onto the reflecting member 121 as a virtual image 130 in front of the front windshield, which is the reflecting member 121.
- the display device 1 (or the display system 200) can also be said to be a display device (or a display system) that displays (projects) an image using the reflecting member 121 as a screen (projected member).
- the user can observe a real image in the field of view ahead of the vehicle 120 (vehicle body) superimposed on an image (virtual image 130) displayed by the display system 200.
- the display system 200 displays various types of driving assistance information superimposed on the scenery (landscape) outside the vehicle.
- the display system 200 can present to the user images showing vehicle speed, fuel, navigation information, weather, temperature, time, various types of warning information, etc., using the display device 1 and the reflective member 121.
- the display device 1 (or display system 200) according to this embodiment can be applied as a head-up display (HUD).
- the display device 1 and the reflective member 121 can be collectively referred to as a head-up display.
- the display system 200 having the display device 1 and the reflective member 121 can also be referred to as a head-up display system.
- the display device 1 is provided so as to follow the curved surface of the front window, which is a reflective member 121.
- the display device 1 has a shape that corresponds to the shape of the curved front window.
- the display device 1 is provided by arranging a plurality of display blocks 80, which will be described later, along the edge of the front window, which is a reflective member 121 having a predetermined curvature (radius of curvature).
- the display device 1 is provided on or within the dashboard 122 of the vehicle 120 so that light from the display device 1 is emitted from the reflective member 121, i.e., from one side of the front window to the other (approximately from the upper end to the lower end, or approximately from the left end to the right end).
- the display device 1 is provided from one end of the dashboard 122 to the other end (approximately from the upper end to the lower end, or approximately from the left end to the right end).
- the display device 1 may be provided over the entire surface of the dashboard 122 so that light from the display device 1 is emitted over the entire surface of the front windshield.
- the display device 1 may also be installed so as to be embedded in the dashboard 122.
- the display device 1 may be provided over the entire dashboard 122 between the left and right A-pillars in the vehicle width direction.
- the display device 1 By providing the display device 1 as shown in FIG. 2, it is possible to realize a larger screen and higher brightness.
- the display device 1 can be placed up to the base of the windshield, making it possible to widen (enlarge) the image display range.
- FIG. 3 is a block diagram showing 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 unit of the display device 1.
- the control unit 20 includes a signal processing unit 30 and a plurality of driving units 40.
- image data is input to the control unit 20 from an image data storage unit.
- the image data storage unit that stores (stores) image data (video signals) may be provided outside the display device 1, or may be provided inside the display device 1.
- 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 has, for example, a processor and memory (ROM, RAM, etc.), and is configured to perform various types of signal processing.
- the signal processing unit 30 can load and execute a program embedded therein to perform signal processing (information processing).
- the signal processing unit 30 receives, for example, a clock provided from the outside, data instructing the operating mode, etc., and controls each part of the control unit 20.
- the signal processing unit 30 is configured to be able to control a plurality of drive units 40.
- the signal processing unit 30 supplies signals that control the drive units 40 to the drive units 40, and controls the operation of the drive units 40.
- the signal processing unit 30 may generate a signal related to the brightness (luminance) of the light emitted by the light-emitting element 10 of the pixel P and output the signal to the driving unit 40. For example, the signal processing unit 30 may transmit a signal related to the magnitude of the current supplied to the light-emitting element 10 of each pixel P to each driving unit 40. Note that the signal processing unit 30 may be provided for each of a plurality of driving units 40, i.e., for each of a predetermined number of driving units 40.
- 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.
- the driving unit 40 is configured to be able to control, for example, the current and voltage to the light-emitting element 10 of each pixel P.
- the driving unit 40 is configured with a plurality of circuits including, for example, a digital circuit unit capable of performing digital signal processing, a DA conversion unit (DAC: Digital to Analog Converter), an amplifier circuit, etc.
- the driving unit 40 is provided, for example, for each set of pixels P (for each set of a predetermined number of pixels P).
- the driving unit 40 supplies a current and voltage for driving the light-emitting element 10 of the pixel P to the light-emitting element 10 of the pixel P connected to the driving unit 40, and can control the light emission by the light-emitting element 10 of the pixel P.
- the driving unit 40 can be considered a driver IC (driver circuit).
- FIG. 4A and 4B are diagrams showing a configuration example of a display device according to an embodiment.
- the display device 1 has a support member 90.
- the support member 90 can be formed so as to follow the curved surface of the reflecting member 121 (for example, a front window).
- the support member 90 can be designed using information on the curved surface of the reflecting member 121 (for example, a front window).
- the information on the curved surface of the reflecting member 121 may be, for example, the curvature of the lower side of the reflecting member 121 (for example, a front window), or the curvature of the upper side of the reflecting member 121.
- the average value of the curvature of the reflecting member 121 (for example, a front window) may be used.
- a plurality of support members 85 having a shape extending in the Y-axis direction are arranged side by side in the X-axis direction on the support member 90.
- the support members 85 are represented by thick lines.
- the plurality of support members 85 are arranged on the support member 90 so as to follow the curved surface of the reflecting member 121 (e.g., the windshield).
- the arrangement of the plurality of support members 85 may be determined using information on the curved surface of the reflecting member 121 (e.g., the windshield).
- the information on the curved surface may be, for example, the curvature of the lower side or the curvature of the upper side of the reflecting member 121 (e.g., the windshield).
- the average value of the curvature of the reflecting member 121 may also be used.
- the plurality of support members 85 may also be arranged so as to match the shape of the side of the support member 90 on the reflecting member 121 side.
- 22 support members 85 are attached to the support member 90.
- the support member 90 is a main frame, and the support member 85 is a subframe.
- the support members 90 and 85 are each formed using a metal material (e.g., aluminum). Note that the support members 90 and 85 may be made of a metal material other than aluminum, or may be made using other materials.
- Each support member 85 has a display block 80, which is a block including a plurality of pixels P, arranged thereon.
- a plurality of display blocks 80 arranged in the vertical direction (column direction) are arranged on the support member 85.
- the display block 80 can also be called a display unit.
- the combination of the support member 85 and the plurality of display blocks 80 (display units) is called a display module.
- Multiple display blocks 80 can be aligned vertically (fore-and-aft direction of the vehicle 120; Y-axis direction in Figures 4A and 4B) and arranged at equal intervals on the support member 85, which is a subframe. As an example, four display blocks 80 arranged in a row are attached to the support member 85, as shown in Figures 4A and 4B.
- the display blocks 80 have a rectangular shape.
- the display blocks 80 may have a rectangular (vertically or horizontally long) shape or a square shape.
- the support members 85 each having four display blocks 80, are arranged so as to be continuous in the X-axis direction.
- the number and arrangement of the display blocks 80, support members 85, support members 90, etc. are not limited to the example shown in the figure and can be changed as appropriate.
- the display blocks 80 and support members 85 do not have to be continuous in the X-axis direction.
- the display blocks 80 and support members 85 may be arranged at both ends of the support member 90 in the X-axis direction, and not in the center of the support member 90.
- Display block configuration 5A and 5B are diagrams showing a configuration 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, for example, by a printed circuit board (PCB).
- the first substrate 101 is made of a material with a low thermal expansion coefficient.
- FIG. 5A shows an example of the configuration of the front surface, i.e., the first surface 11S1 side, of the first substrate 101 of the display block 80
- FIG. 5B shows an example of the configuration of the rear surface, i.e., the second surface 11S2 side, of the first substrate 101 of the display block 80.
- 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.
- a plurality of driving units 40 are arranged on the rear surface side of the first substrate 101.
- the driving units 40 are arranged for each of a plurality of pixels P (for each predetermined number of pixels P) on the rear surface of the first substrate 101. Note that the number and arrangement of the driving units 40 are not limited to the example shown in the figure, and can be changed as appropriate.
- pixel P of display device 1 has a green LED, which is a light-emitting element 10g capable of emitting green (G) light, a blue LED, which is a light-emitting element 10b capable of emitting blue (B) light, and a red LED, which is a light-emitting element 10r capable of emitting red (R) light.
- a green LED which is a light-emitting element 10g capable of emitting green (G) light
- a blue LED which is a light-emitting element 10b capable of emitting blue (B) light
- red LED which is a light-emitting element 10r capable of emitting red (R) light.
- Light-emitting element 10g is controlled by drive unit 40 and is configured to be capable of outputting light in the green wavelength range.
- Light-emitting element 10b is controlled by drive unit 40 and is configured to be capable of outputting light in the blue wavelength range.
- Light-emitting element 10r is controlled by drive unit 40 and is configured to be capable of outputting light in the red wavelength range.
- Each of the multiple pixels P of display device 1 has LEDs of three colors: RGB.
- each display block 80 of the display device 1 as shown in the example of FIG. 5A, a plurality of light-emitting elements 10r, a plurality of light-emitting elements 10g, and a plurality of light-emitting elements 10b are arranged repeatedly.
- the light-emitting elements 10 of each pixel P are arranged, for example, in an RGB array.
- the display device 1 can display a color image (video) by controlling the emission of the three color LEDs of each pixel P.
- the area of the region corresponding to the pixel of the image and the area occupied by the light-emitting element can be set appropriately according to the specifications of the display device 1.
- the higher the temperature of the light-emitting element e.g., LED
- the photoelectric conversion efficiency can decrease according to phosphor theory when the temperature of the blue LED increases. For this reason, in order to achieve high brightness, it is important to supply a large current to the light-emitting element while suppressing an increase in the temperature around the light-emitting element.
- the area occupied by the multiple light-emitting elements 10 in the region 110 may be set to a value within a range of 20% to 30% of the total area of the region 110. This allows the multiple light-emitting elements 10 in each region 110 to emit light efficiently, making it possible to achieve high brightness.
- the first substrate 101 has a first surface 11S1 and a second surface 11S2 that face each other.
- the second surface 11S2 is the surface opposite to the first surface 11S1.
- the first substrate 101 is formed, 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.
- a third substrate 103 on which a light-shielding member 55 is formed is attached to a first substrate 101.
- the provision of the light-shielding member 55 makes the pixels P in a non-emitting state appear darker. This makes it possible to improve the display quality of the image.
- the signal processing unit 30 is configured to perform input video analysis processing to analyze the video signal, and to be able to execute control of gamma adjustment and image adjustment based on the analysis results.
- the signal processing unit 30 performs sensor analysis processing to analyze the sensor signal output from the sensor unit 70, and can execute control of gamma adjustment and image adjustment based on the analysis processing.
- the signal processing unit 30 can also perform a process (function) of extracting the signal portion of the video signal to be used for displaying (playing) the image, i.e., clipping.
- Fig. 18A is a diagram for explaining the relationship between the supply current to the light-emitting element of the display device according to the embodiment and the input data.
- the horizontal axis indicates the input data Din, which is the signal value (pixel value) of the pixel P
- the vertical axis indicates the current I F supplied to the light-emitting element 10 by the drive unit 40.
- the current I F is the drive current flowing through the light-emitting element 10, as in the example shown in Fig. 17.
- the memory unit 41 holds, for example, multiple setting tables (Table 0, Table 1, Table 2, Table 3, ...) for each temperature range.
- the drive unit 40 reads and refers to the setting tables stored in the memory unit 41, and performs processing to adjust (correct) the current supplied to the light-emitting element 10.
- the drive unit 40 can switch the setting table, as shown diagrammatically by the dashed arrow in Figure 18A, and perform control to reduce the current supplied to the light-emitting element 10.
- the driving unit 40 is configured to, for example, compare the temperature indicated by the temperature signal with a threshold value and change the setting table based on the comparison result.
- the driving unit 40 can control the current to the light-emitting element 10 using a setting table selected according to the ambient temperature. As shown in FIG. 18B, different threshold values may be defined for each setting table when the temperature increases (UP ( ⁇ )) and when the temperature decreases (DOWN ( ⁇ )), and a hysteresis of the threshold value may be set. In the example shown in FIG. 18B, threshold values A to J and threshold values A' to J' are set.
- the setting table is changed in all the driving units 40 in the display block 80 in which the driving unit 40 with the increased temperature is arranged, so that the driving current I F is reduced.
- the same setting table may be used in all the driving units 40 in which the driving current I F is reduced.
- the control of the drive current I F may be performed not only in the drive unit 40 whose temperature has risen, but also in other drive units 40 in other display blocks 80 other than the display block 80 in which the drive unit 40 whose temperature has risen is located.
- the setting table is changed so that the drive current I F is reduced not only in the display block 80 in which the drive unit 40 whose temperature has risen is located, but also in all drive units 40 in the display device 1.
- the same setting table may be used in all drive units 40 (drive units 40 in multiple display blocks 80) in which the drive current I F is reduced.
- the signal processing unit 30 of the control unit 20 may control the current supplied to the light-emitting element 10 by the driving unit 40 based on the temperature signal generated by each temperature sensor 45.
- the above-mentioned setting table may be stored in an internal memory of the signal processing unit 30, for example, in the storage unit 31 (see FIG. 17).
- the storage unit 31 of the control unit 20 is configured to be capable of storing data (setting table) relating to the correspondence between pixel signal values and current I F supplied to the light emitting element 10.
- the storage unit 31 is configured to include, for example, a non-volatile memory, and stores programs and data. Various information such as programs and data used to control the drive unit 40 can be stored in the storage unit 31.
- the storage unit 31 is a recording medium such as a semiconductor memory.
- the control unit 20 may compare one or more of the temperatures of each drive unit 40 detected by each temperature sensor 45 with a threshold value, and simultaneously (in parallel) change the setting table set for each drive unit 40 according to the comparison result.
- the control unit 20 may be configured to be able to set an individual setting table for each light-emitting element 10 of each color (R/G/B) to match the characteristics of the light-emitting elements 10r, 10g, 10b of each color.
- FIG. 19 is a flowchart showing an example of the operation of a display system according to an embodiment. An example of the operation of the display system 200 will be described with reference to the flowchart in FIG. 19. For example, when a video signal is input to the display device 1 after an application (system) of the display device 1 is started, the flowchart in FIG. 19 starts.
- the control unit 20 (signal processing unit 30 and driving unit 40) of the display device 1, for example, refers to the setting table stored in the memory unit 31 (or memory unit 41) and selects and sets the setting table and threshold value that will be the initial setting.
- step S11 the control unit 20 judges whether the input video signal is normal. If the judgment result in step S11 is negative ("No" in step S11), the process proceeds to step S12. For example, if the video signal is a signal indicating a full white screen for a certain period of time, that is, driving all the light-emitting elements 10 with a current I F of 100%, which is the maximum current, the control unit 20 judges negative in step S11.
- step S15 the display system 200 ends the process shown in the flowchart of FIG. 19. Note that, when a video signal is input to the signal processing unit 30, the control unit 20 of the display device 1 may execute the process shown in the flowchart of FIG. 19 again.
- FIG. 20 is a diagram showing an example of the arrangement of sensors in a display device according to an embodiment.
- the various sensors of the sensor unit 70 described above such as an illuminance sensor, a color sensor, a camera, etc., may be arranged as shown in FIG. 20.
- an illuminance sensor, a camera, etc. may be arranged on the back side of the rearview mirror of the vehicle 120, and measurements may be taken of the area in front of the vehicle 120.
- the display device 1 displays a warning mark 131 (Caution) and another image 132 (e.g., video content) superimposed on a real image in front of the vehicle 120 observed through the front windshield, which is a reflective member 121.
- the signal processing unit 30 or the driving unit 40 may perform processing to reduce the brightness of the warning mark 131 and the image 132, which has a lower priority. This makes it possible to suppress the temperature rise while maintaining the brightness of the warning mark 131, which has a higher priority.
- the signal processing unit 30 may change the display position of the warning mark 131 to the lower left area.
- the signal processing unit 30 may reduce the size of the image 132, which has a relatively low priority, and change the display position of the image 132 to the lower right area.
- FIGS. 22A to 22C are diagrams for explaining another example of image control by a display device according to an embodiment.
- the signal processing unit 30 may adjust the brightness of the image, etc., for each display area on the screen (for example, for each display block 80, or for each of a plurality of display blocks 80) according to the ambient temperature.
- the signal processing unit 30 may adjust the brightness and color of each display area according to the brightness of each display area of the image.
- the signal processing unit 30 may adjust the brightness of the image, etc., based on the brightness of each display area from one side of the front window to the other, as in the example shown in FIG. 22A. This makes it possible to effectively improve the image quality.
- the signal processing unit 30 may obtain the brightness distribution of each display area from the sky area to the road area using a sensor signal, etc., and set the brightness, color, etc. of the image for each display area.
- the signal processing unit 30 may change the brightness, etc. of each display area depending on the illuminance distribution of the background.
- the display device 1 may adjust the image in area A2 (e.g., change the display color) taking into account the color of that part of the vehicle body.
- a print member for the screen may be arranged in the lower area of the front window.
- the display device 1 can project an image onto the front window and the black print 140.
- FIG. 23 is a diagram for explaining an example of the arrangement of sensors in a display device according to an embodiment.
- a voltage sensor may be connected between the battery of the vehicle 120 and the power supply circuit for the display device 1, as in the example shown in FIG. 23.
- a current sensor may be provided at node N1 shown in FIG. 23.
- the signal processing unit 30 may adjust the brightness of the image, etc., depending on the voltage of the battery of the vehicle 120 detected by, for example, the voltage sensor.
- the signal processing unit 30 may be configured to reduce the brightness of an image with a low priority when the battery voltage of the vehicle 120 drops. By adjusting the drive current of the light-emitting element 10 taking into account the battery voltage, it is possible to prevent the brightness of an image with a high priority from decreasing.
- the signal processing unit 30 may also be configured to adjust the brightness of the image, etc., according to the current consumption detected by the current sensor.
- the signal processing unit 30 can estimate the remaining battery level.
- the current (IA) flowing through the node N1 the voltage VA of the node N1, and the efficiency ⁇
- the signal processing unit 30 may adjust the brightness of the image according to the estimated remaining battery charge. By adjusting the drive current of the light-emitting element 10 according to the remaining battery charge, it is possible to prevent the image quality of high priority images from deteriorating.
- the display area may be adjusted at the same time. By adjusting the display area together with the brightness adjustment, it is possible to prevent necessary information from becoming invisible when the brightness is lowered.
- FIG. 24 is a diagram showing an example of state transitions of the drive unit of the display device according to the embodiment.
- the drive unit 40 may have a standby function. In the standby state (standby mode), for example, the DAC, amplifier circuit, etc. inside the drive unit 40 are stopped. In the standby state, the power consumption of the drive unit 40 is smaller (lower) than in the active state (active mode), and the drive unit 40 is in a power-saving state.
- the signal processing unit 30 may set the driver 40 from the active state to the standby state. Also, as shown in FIG. 24, when the video signal assigned to the driver 40 is a signal indicating all white, the signal processing unit 30 may set the driver 40 from the standby state to the active state. By controlling the state of the driver 40, the power consumption of the display device 1 can be reduced.
- the signal processing unit 30 may control the state of the drive unit 40 for each display block 80.
- the signal processing unit 30 can effectively reduce power consumption by placing each of the multiple drive units 40 in the display block 80 in a standby state in response to the input video signal.
- standby control may be performed for each drive unit 40, but standby control may also be performed for each display block 80.
- the display device includes a first display block (display block 80) having a plurality of light-emitting elements (light-emitting elements 10) arranged side by side in a first direction (e.g., the X-axis direction) and a second direction (e.g., the Y-axis direction) intersecting the first direction, and a second display block having a plurality of light-emitting elements arranged side by side in the first direction and the second direction.
- the first display block and the second display block are disposed adjacent to each other in the first direction and are shifted from each other by a predetermined amount in the second direction.
- a plurality of display blocks 80 each having a plurality of light-emitting elements 10, are provided.
- a plurality of display blocks 80 adjacent to each other in a first direction e.g., the X-axis direction
- a second direction e.g., the Y-axis direction.
- the display device (display device 1) includes a plurality of display blocks (display blocks 80), each having a plurality of light-emitting elements (light-emitting elements 10), a temperature sensor (temperature sensor 45) provided for each display block and capable of generating a first signal (temperature signal) related to the ambient temperature, and a control unit (control unit 20) capable of controlling the light-emitting elements based on the first signal.
- control unit 20 controls the light-emitting element 10 based on the temperature signal generated by the temperature sensor 45. This makes it possible to suppress heat generation in the display device 1. It becomes possible to improve the display performance of the display device 1.
- Modified Examples (2-1. Modification 1) 25A and 25B are diagrams for explaining a configuration example of a display system according to Modification 1 of the present disclosure.
- the display system 200 may have a louver 150, as in the example shown in Fig. 25A and 25B.
- the louver 150 is provided on, for example, the display device 1.
- the louver 150 may be disposed so as to cover the entire upper surface of the display device 1.
- 26A and 26B are diagrams for explaining the behavior of the display system 200 according to the embodiment shown in FIG. 1 and the like.
- the display system 200 shown in FIG. 26A and 26B does not have a louver 150 on the display device 1.
- unnecessary light may leak from the display device 1 to the surroundings, causing driver distraction.
- the display system 200 of the first modified example shown in FIG. 25A and 25B is provided with a louver 150, which makes it possible to prevent unnecessary light from leaking to the surroundings and prevent driver distraction from occurring.
- the display system 200 may have a polarizing plate 160 and a ⁇ /2 plate 165.
- the polarizing plate 160 is provided on the display device 1.
- the polarizing plate 160 is disposed, for example, so as to cover the entire upper surface of the display device 1.
- the ⁇ /2 plate 165 is disposed on the display device 1 side of the front window, which is the reflective member 121.
- a portion of the S-polarized light output from the display device 1 via the polarizing plate 160 is reflected by the outer surface of the front window and becomes P-polarized light.
- This P-polarized light is reflected by the ⁇ /2 plate 165 toward the outside of the front window. This makes it possible to suppress the occurrence of double images and improve image quality.
- the connector board 95 is attached to the side opposite to the front side of the support member 90 to which the multiple support members 85 are attached, i.e., the back side of the support member 90, as shown in the example of FIG. 28, for example.
- the above-mentioned signal processing unit 30 is provided on the back side of the connector board 95.
- a signal processing unit 30 may be arranged on the back side of the connector board 95 for each of the multiple drive units 40, i.e., for each predetermined number of drive units 40.
- the display device 1 may have a shield cover on the back side of the connector board 95.
- the shield cover is a shielding member made of, for example, a metal material, and is attached to the back side of the connector board 95.
- Providing the shield cover can provide EMC (electromagnetic compatibility) measures.
- the display block 80, the support member 85, and the support member 90 are each provided with holes 15a, 15b, and 15c, as in the example shown in FIG. 28 etc.
- Holes 15a to 15c are holes (holes) through which a flexible board (or connector cable) passes, and can be said to be through holes.
- the signal processing unit 30 of the connector board 95 is electrically connected to the connector 25 of the display block 80 via the flexible board (or connector cable).
- the size of the screw holes 16b provided in the support member 85 is larger than the size of the screw holes 16a provided in the display block 80. This allows the display block 80 to be moved with the screws temporarily fastened, allowing the position of the display block 80 to be adjusted. The position of the display block 80 can be adjusted, preventing gaps from occurring between adjacent display blocks 80.
- the position of the display block 80 is adjusted by moving the temporarily fixed display block 80 in the left-right direction (the left-right direction of the vehicle 120 shown in FIG. 2, etc.), and the pixel arrangement (pixel position) is adjusted in the up-down direction (the front-rear direction of the vehicle 120). Then, after the temporarily fixed screws are further tightened, the position of the display block 80 is fixed with an adhesive that uses a thermosetting resin.
- the support member 85 on which the display block 80 is mounted is aligned on the support member 90, which is the main frame. Then, screws are inserted into the screw holes 17b and 17a via washers, and the screws are lightly tightened to temporarily secure the support member 85.
- the position of the temporarily fixed support member 85 is adjusted by moving it up and down, and the arrangement of the pixels (pixel positions) is adjusted left and right. Then, after the temporarily fixed screws are further tightened, the position of the support member 85 is fixed using a thermosetting resin as an adhesive.
- one end of the flexible board is connected to the connector 25 of the display block 80, and the other end of the flexible board is connected to a connector (not shown) provided on the connector board 95.
- a shield cover is attached to the back side of the connector board 95.
- FIGS. 31 to 34 are diagrams for explaining a configuration example of a display device according to Modification 4.
- the display device 1 may have, for example, frame members 111, 112, and 113.
- a louver may be used as in Modification 1, or a polarizing plate may be used as in Modification 2.
- the display device 1 and the display system 200 may have the above-described louver 150, or may have a polarizing plate 160 and a ⁇ /2 plate 165.
- an image of an arrow L2 that has the same color as the grass is displayed in the grass area around the road, and it may be difficult for the user (observer) to see the arrow L2.
- the arrow L2 blends into the grass area in the background.
- the display system and display device of the present disclosure are applicable to various types of vehicles.
- the technology according to the present disclosure is applicable to various vehicles such as BEV (battery electric vehicle), HEV (Hybrid Electric Vehicle), PHV (Plug-in Hybrid Vehicle), etc.
- the technology according to the present disclosure may be applied to a vehicle capable of level 2 or higher or level 4 or higher autonomous driving.
- the display system and display device of the present disclosure may be used not only while driving, but also while parked or stopped.
- the technology of the present disclosure can be applied to, for example, the display unit 12062.
- the display device 1 etc. can be applied to the display unit 12062.
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Abstract
Description
本開示の一実施形態の表示システムは、表示装置と、表示装置からの光を反射する反射部材とを備える。表示装置は、複数の発光素子をそれぞれ有する複数の表示ブロックと、表示ブロック毎に設けられ、周囲の温度に関する第1信号を生成可能な温度センサと、第1信号に基づいて発光素子を制御可能な制御部とを有する。
1.実施の形態
2.変形例
3.応用例
図1及び図2は、本開示の実施の形態に係る表示システムの構成例を説明するための図である。表示システム200は、表示装置1と、反射部材121とを含む。表示装置1は、発光素子10を有する複数の画素Pを有し、画像を表示可能に構成される。発光素子10は、例えばLED(Light Emitting Diode)である。表示装置1では、複数の発光素子10が行列状に配置される。
図3は、実施の形態に係る表示装置の構成例を示すブロック図である。表示装置1は、発光素子10を有する複数の画素Pと、制御部20とを備える。制御部20は、制御回路であり、表示装置1の各部を制御可能に構成される。図3に示す例では、制御部20は、信号処理部30と、複数の駆動部40とを有する。なお、ここでは図示されていないが、画像データ格納部から画像データが制御部20に入力される。画像データ(映像信号)を格納(記憶)する画像データ格納部は、表示装置1の外部に設けられてもよいし、表示装置1の内部に設けられてもよい。
図4A及び図4Bは、実施の形態に係る表示装置の構成例を示す図である。表示装置1は、図4A及び図4Bに示すように、支持部材90を有する。支持部材90は、反射部材121(例えばフロントウィンドウ)の曲面に沿うように形成され得る。支持部材90は反射部材121(例えばフロントウィンドウ)の曲面の情報を用いて、設計され得る。反射部材121の曲面の情報は、例えば、反射部材121(例えばフロントウィンドウ)の下部の辺の曲率でもよいし、反射部材121の上部の辺の曲率でも良い。また、反射部材121(例えばフロントウィンドウ)の曲率の平均値を用いても良い。
図5A及び図5Bは、実施の形態に係る表示装置の表示ブロックの構成例を示す図である。表示ブロック80は、第1基板101を用いて構成される。第1基板101は、例えば、プリント回路基板(PCB:printed circuit board)により構成される。例えば、第1基板101は熱膨張率の低い素材が使われている。
図10は、実施の形態に係る表示装置の画素の断面構成の一例を説明するための図である。表示装置1は、例えば、第1基板101と、発光素子10と、保護部材50と、第2基板102と、レンズ61とを有する。表示装置1は、第1基板101と第2基板102とが積層された構成を有する。
図17は、実施の形態に係る表示装置の制御部の構成例を説明するための図である。表示装置1は、センサ部70と、上述した制御部20と、複数の画素Pとを含んで構成される。なお、図17では、表示装置1の一部の表示ブロック(表示ブロック80a、表示ブロック80b)を図示している。
Display電力 = (VA×IA/η)
本実施の形態に係る表示装置(表示装置1)は、第1方向(例えばX軸方向)および第1方向に交差する第2方向(例えばY軸方向)に並んで設けられる複数の発光素子(発光素子10)を有する第1表示ブロック(表示ブロック80)と、第1方向および第2方向に並んで設けられる複数の発光素子を有する第2表示ブロックとを備える。第1表示ブロックと第2表示ブロックとは、第1方向において隣り合って配置され、第2方向に互いに所定量ずれている。
(2-1.変形例1)
図25A及び図25Bは、本開示の変形例1に係る表示システムの構成例を説明するための図である。表示システム200は、図25A及び図25Bに示す例のように、ルーバー150を有していてもよい。ルーバー150は、例えば、表示装置1上に設けられる。ルーバー150は、表示装置1の上面全体を覆うように配置され得る。
図27A及び図27Bは、変形例2に係る表示システムの構成例を説明するための図である。表示システム200は、偏光板160と、λ/2板165を有していてもよい。偏光板160は、表示装置1上に設けられる。偏光板160は、例えば、表示装置1の上面全体を覆うように配置される。λ/2板165は、反射部材121であるフロントウィンドウの表示装置1側に配置される。
図28~図30は、変形例3に係る表示装置の構成例を説明するための図である。表示装置1は、表示ブロック80(パネル)が取り付けられるサブフレームである支持部材85と、支持部材85が取り付けられるメインフレームである支持部材90に加えて、支持部材90に取り付けられる部材(コネクタ基板95と称する)を有し得る。コネクタ基板95は、例えば、複数のプリント回路基板を用いて構成され、コネクタフレームともいえる。なお、この変形例3の構造に加えて、変形例1の様にルーバーを用いても良いし、変形例2の様に偏光板を用いてもよい。例えば、表示装置1及び表示システム200は、上述したルーバー150を有していてもよく、偏光板160及びλ/2板165を有していてもよい。
上述した実施の形態では、表示装置1が支持部材85(サブフレーム)を有する例について説明したが、表示装置1は、支持部材85を有しない構成であってもよい。図31~図34は、変形例4に係る表示装置の構成例を説明するための図である。表示装置1は、例えば、フレーム部材111と、フレーム部材112と、フレーム部材113を有し得る。なお、この変形例4の構造に加えて、変形例1の様にルーバーを用いても良いし、変形例2の様に偏光板を用いてもよい。例えば、表示装置1及び表示システム200は、上述したルーバー150を有していてもよく、偏光板160及びλ/2板165を有していてもよい。
図35及び図36は、変形例5に係る表示装置の動作例を説明するための図である。表示装置1は、上述した実施の形態や変形例1から変形例4の場合と同様に、複数の表示ブロック80の各々の駆動部40によって各画素Pの発光素子10を駆動させ、各表示エリアにおける画像の表示を実行可能に構成される。この例の表示装置1は、上述した実施の形態や変形例1から変形例4に記載された表示装置の内の一つでもよい。また、本動作例は、実施の形態に記された動作と適宜組み合わせて用いても良い。
図37A~図37Cは、変形例6に係る表示装置の動作例を説明するための図である。この例の表示装置1は、上述した実施の形態や変形例1から変形例4に記載された表示装置の内の一つでもよい。制御部20は、車両120の周囲の明るさに基づき、画像の輝度(明るさ)、画像の色、画像の表示位置などを制御可能に構成されてよい。制御部20(又は信号処理部30)は、例えば、センサ部70のうちカメラ、イメージセンサ等から出力されるセンサ信号を用いて、各表示エリアにおける車外の景色(背景)の明るさ及び色などを把握し、表示する画像の輝度、色、サイズ等を調整し得る。また、本動作例は、実施の形態や変形例5の様に他の例として記された動作と適宜組み合わせて用いても良い。
上述した実施の形態および変形例では、表示システム200及び表示装置1の構成例について説明したが、あくまでも一例であって、表示システム200及び表示装置1の構成は上述した例に限られない。例えば、反射部材121として、フロントウィンドウ以外の反射部材、例えばリアウィンドウ、反射板(コンバイナ)、天井の窓などを用いるようにしてもよい。また、発光素子10は、有機EL(Electro Luminescence)素子であってもよい。また、発光素子10として、液晶表示素子を用いてもよい。
本開示の表示システム及び表示装置は、様々なタイプの車両に適用可能である。例えば、上述した実施の形態および変形例で開示された技術の様に、本開示に係る技術は、BEV(battery electric vehicle)、HEV(Hybrid Electric Vehicle)、PHV(Plug-in Hybrid Vehicle)等、種々の車両に適用可能である。本開示に係る技術を、レベル2以上またはレベル4以上の自動運転に対応可能な車両に適用してもよい。また、本開示の表示システム及び表示装置は、走行中に使用されるだけではなく、駐車中や停車中に使用されても良い。
(移動体への応用例)
本開示に係る技術(本技術)は、様々な製品へ応用することができる。例えば、本開示に係る技術は、自動車、電気自動車、ハイブリッド電気自動車、自動二輪車、自転車、パーソナルモビリティ、飛行機、ドローン、船舶、ロボット等のいずれかの種類の移動体に搭載される装置として実現されてもよい。
(1)
複数の発光素子をそれぞれ有する複数の表示ブロックと、
前記表示ブロック毎に設けられ、周囲の温度に関する第1信号を生成可能な温度センサと、
前記第1信号に基づいて前記発光素子を制御可能な制御部と
を備える表示装置。
(2)
前記複数の表示ブロックは、複数の発光素子を有する第1表示ブロックと、複数の発光素子を有する第2表示ブロックとを含み、
複数の前記温度センサは、前記第1表示ブロックに設けられる第1の温度センサと、前記第2表示ブロックに設けられる第2の温度センサとを含む
前記(1)に記載の表示装置。
(3)
前記制御部は、前記第1の温度センサにより生成された前記第1信号に基づいて第1表示ブロックの前記発光素子を制御可能であり、
前記制御部は、前記第2の温度センサにより生成された前記第1信号に基づいて第2表示ブロックの前記発光素子を制御可能である
前記(2)に記載の表示装置。
(4)
前記制御部は、前記第1表示ブロックに設けられる第1駆動回路と、前記第2表示ブロックに設けられる第2駆動回路とを有し、
前記第1駆動回路は、前記第1の温度センサにより生成された前記第1信号に基づいて、前記第1表示ブロックの前記発光素子への電流の供給を制御可能であり、
前記第2駆動回路は、前記第2の温度センサにより生成された前記第1信号に基づいて、前記第2表示ブロックの前記発光素子への電流の供給を制御可能である
前記(2)または(3)に記載の表示装置。
(5)
前記第1駆動回路は、前記第1の温度センサを有し、
前記第2駆動回路は、前記第2の温度センサを有する
前記(4)に記載の表示装置。
(6)
前記制御部は、前記第1信号が示す温度に応じて、前記発光素子に供給する電流を小さくする制御を実行可能である
前記(1)から(5)のいずれか1つに記載の表示装置。
(7)
第1温度の場合の前記発光素子に供給する電流に関する第1データと、前記第1温度とは異なる第2温度の場合の前記発光素子に供給する電流に関する第2データとを記憶可能な記憶部を有する
前記(1)から(6)のいずれか1つに記載の表示装置。
(8)
前記制御部は、前記第1信号に基づいて選択した前記第1データまたは前記第2データに基づき、前記発光素子を制御可能である
前記(7)に記載の表示装置。
(9)
前記複数の表示ブロックは、第1方向および前記第1方向に交差する第2方向に並んで設けられる複数の発光素子をそれぞれ有する第1表示ブロックおよび第2表示ブロックを含み、
前記第1表示ブロックと前記第2表示ブロックとは、前記第1方向において隣り合って配置され、前記第2方向に互いに所定量ずれている
前記(1)から(8)のいずれか1つに記載の表示装置。
(10)
前記第1表示ブロックおよび前記第2表示ブロックは、前記発光素子をそれぞれ含む複数の画素を有し、
前記第1表示ブロックと前記第2表示ブロックとは、1画素単位または複数画素単位で前記第2方向に互いにずれている
前記(10)に記載の表示装置。
(11)
前記複数の表示ブロックは、前記発光素子からの光を反射する反射部材に沿って配置される
前記(1)から(10)のいずれか1つに記載の表示装置。
(12)
前記複数の表示ブロックは、前記発光素子からの光を反射する反射部材であるフロントウィンドウの曲面に沿って配置される
前記(1)から(11)のいずれか1つに記載の表示装置。
(13)
第1方向に交差する第2方向に並ぶ複数の前記表示ブロックをそれぞれ有する複数の第1支持部材を備える
前記(1)から(12)のいずれか1つに記載の表示装置。
(14)
前記第1方向に連続するように配置された前記複数の第1支持部材を有する第2支持部材を備える
前記(13)に記載の表示装置。
(15)
前記複数の表示ブロックは、それぞれ、矩形状の形状を有する
前記(1)から(14)のいずれか1つに記載の表示装置。
(16)
前記発光素子は、発光ダイオードである
前記(1)から(15)のいずれか1つに記載の表示装置。
(17)
複数の発光素子をそれぞれ有する複数の表示ブロックと、
車両の周囲の明るさに関する第2信号を生成可能な第1センサと、
前記第2信号に基づいて、前記表示ブロックの前記発光素子への電流の供給を制御可能な制御部と
を備える表示装置。
(18)
複数の発光素子をそれぞれ有する複数の表示ブロックと、
車両の周囲の明るさに関する第2信号を生成可能な第1センサと、
前記第2信号に基づいて、前記表示ブロックの前記発光素子により表示される画像の明るさを制御可能な制御部と
を備える表示装置。
(19)
複数の発光素子をそれぞれ有する複数の表示ブロックと、
車両の周囲の明るさに関する第2信号を生成可能な第1センサと、
前記第2信号に基づいて画像の画素毎の値を調整し、前記発光素子を制御可能な制御部と
を備える表示装置。
(20)
複数の発光素子をそれぞれ有する複数の表示ブロックと、
周囲の温度に関する第1信号を生成可能な温度センサと、
前記第1信号と電力の許容値とに基づいて、前記発光素子を制御可能な制御部と
を備える表示装置。
(21)
前記制御部は、前記第1信号と電力の許容値と画像の優先度に基づいて、前記発光素子を制御可能である
前記(20)に記載の表示装置。
(22)
表示装置と、
前記表示装置からの光を反射する反射部材と
を備え、
前記表示装置は、
複数の発光素子をそれぞれ有する複数の表示ブロックと、
前記表示ブロック毎に設けられ、周囲の温度に関する第1信号を生成可能な温度センサと、
前記第1信号に基づいて前記発光素子を制御可能な制御部と
を有する
表示システム。
(23)
前記制御部は、前記表示ブロック毎に設けられる駆動回路を有し、
前記駆動回路は、前記温度センサにより生成された前記第1信号に基づいて、前記発光素子への電流の供給を制御可能である
前記(22)に記載の表示システム。
(24)
前記反射部材は、車両のフロントウィンドウであり、
前記複数の表示ブロックは、前記フロントウィンドウの曲面に沿って配置されている
前記(22)または(23)に記載の表示システム。
(25)
前記反射部材は、車両のフロントウィンドウであり、
前記表示装置は、前記車両のダッシュボード上またはダッシュボード内において、前記フロントウィンドウの一方側から他方側にわたって設けられる
前記(22)から(24)のいずれか1つに記載の表示システム。
(26)
表示装置と、
前記表示装置からの光を反射する反射部材と
を備え、
前記表示装置は、
複数の発光素子をそれぞれ有する複数の表示ブロックと、
車両の周囲の明るさに関する第2信号を生成可能な第1センサと、
前記第2信号に基づいて、前記表示ブロックの前記発光素子への電流の供給を制御可能な制御部と
を有する
表示システム。
(27)
表示装置と、
前記表示装置からの光を反射する反射部材と
を備え、
前記表示装置は、
複数の発光素子をそれぞれ有する複数の表示ブロックと、
車両の周囲の明るさに関する第2信号を生成可能な第1センサと、
前記第2信号に基づいて、前記表示ブロックの前記発光素子により表示される画像の明るさを制御可能な制御部と
を有する
表示システム。
(28)
表示装置と、
前記表示装置からの光を反射する反射部材と
を備え、
前記表示装置は、
複数の発光素子をそれぞれ有する複数の表示ブロックと、
車両の周囲の明るさに関する第2信号を生成可能な第1センサと、
前記第2信号に基づいて画像の画素毎の値を調整し、前記発光素子を制御可能な制御部と
を有する
表示システム。
(29)
表示装置と、
前記表示装置からの光を反射する反射部材と
を備え、
前記表示装置は、
複数の発光素子をそれぞれ有する複数の表示ブロックと、
周囲の温度に関する第1信号を生成可能な温度センサと、
前記第1信号と電力の許容値とに基づいて、前記発光素子を制御可能な制御部と
を有する
表示システム。
(30)
前記制御部は、前記第1信号と電力の許容値と画像の優先度に基づいて、前記発光素子を制御可能である
前記(29)に記載の表示システム。
Claims (20)
- 複数の発光素子をそれぞれ有する複数の表示ブロックと、
前記表示ブロック毎に設けられ、周囲の温度に関する第1信号を生成可能な温度センサと、
前記第1信号に基づいて前記発光素子を制御可能な制御部と
を備える表示装置。 - 前記複数の表示ブロックは、複数の発光素子を有する第1表示ブロックと、複数の発光素子を有する第2表示ブロックとを含み、
複数の前記温度センサは、前記第1表示ブロックに設けられる第1の温度センサと、前記第2表示ブロックに設けられる第2の温度センサとを含む
請求項1に記載の表示装置。 - 前記制御部は、前記第1の温度センサにより生成された前記第1信号に基づいて第1表示ブロックの前記発光素子を制御可能であり、
前記制御部は、前記第2の温度センサにより生成された前記第1信号に基づいて第2表示ブロックの前記発光素子を制御可能である
請求項2に記載の表示装置。 - 前記制御部は、前記第1表示ブロックに設けられる第1駆動回路と、前記第2表示ブロックに設けられる第2駆動回路とを有し、
前記第1駆動回路は、前記第1の温度センサにより生成された前記第1信号に基づいて、前記第1表示ブロックの前記発光素子への電流の供給を制御可能であり、
前記第2駆動回路は、前記第2の温度センサにより生成された前記第1信号に基づいて、前記第2表示ブロックの前記発光素子への電流の供給を制御可能である
請求項2に記載の表示装置。 - 前記第1駆動回路は、前記第1の温度センサを有し、
前記第2駆動回路は、前記第2の温度センサを有する
請求項4に記載の表示装置。 - 前記制御部は、前記第1信号が示す温度に応じて、前記発光素子に供給する電流を小さくする制御を実行可能である
請求項1に記載の表示装置。 - 第1温度の場合の前記発光素子に供給する電流に関する第1データと、前記第1温度とは異なる第2温度の場合の前記発光素子に供給する電流に関する第2データとを記憶可能な記憶部を有する
請求項1に記載の表示装置。 - 前記制御部は、前記第1信号に基づいて選択した前記第1データまたは前記第2データに基づき、前記発光素子を制御可能である
請求項7に記載の表示装置。 - 前記複数の表示ブロックは、第1方向および前記第1方向に交差する第2方向に並んで設けられる複数の発光素子をそれぞれ有する第1表示ブロックおよび第2表示ブロックを含み、
前記第1表示ブロックと前記第2表示ブロックとは、前記第1方向において隣り合って配置され、前記第2方向に互いに所定量ずれている
請求項1に記載の表示装置。 - 前記第1表示ブロックおよび前記第2表示ブロックは、前記発光素子をそれぞれ含む複数の画素を有し、
前記第1表示ブロックと前記第2表示ブロックとは、1画素単位または複数画素単位で前記第2方向に互いにずれている
請求項9に記載の表示装置。 - 前記複数の表示ブロックは、前記発光素子からの光を反射する反射部材に沿って配置される
請求項1に記載の表示装置。 - 前記複数の表示ブロックは、前記発光素子からの光を反射する反射部材であるフロントウィンドウの曲面に沿って配置される
請求項1に記載の表示装置。 - 第1方向に交差する第2方向に並ぶ複数の前記表示ブロックをそれぞれ有する複数の第1支持部材を備える
請求項1に記載の表示装置。 - 前記第1方向に連続するように配置された前記複数の第1支持部材を有する第2支持部材を備える
請求項13に記載の表示装置。 - 前記複数の表示ブロックは、それぞれ、矩形状の形状を有する
請求項1に記載の表示装置。 - 前記発光素子は、発光ダイオードである
請求項1に記載の表示装置。 - 表示装置と、
前記表示装置からの光を反射する反射部材と
を備え、
前記表示装置は、
複数の発光素子をそれぞれ有する複数の表示ブロックと、
前記表示ブロック毎に設けられ、周囲の温度に関する第1信号を生成可能な温度センサと、
前記第1信号に基づいて前記発光素子を制御可能な制御部と
を有する
表示システム。 - 前記制御部は、前記表示ブロック毎に設けられる駆動回路を有し、
前記駆動回路は、前記温度センサにより生成された前記第1信号に基づいて、前記発光素子への電流の供給を制御可能である
請求項17に記載の表示システム。 - 前記反射部材は、車両のフロントウィンドウであり、
前記複数の表示ブロックは、前記フロントウィンドウの曲面に沿って配置されている
請求項17に記載の表示システム。 - 前記反射部材は、車両のフロントウィンドウであり、
前記表示装置は、前記車両のダッシュボード上またはダッシュボード内において、前記フロントウィンドウの一方側から他方側にわたって設けられる
請求項17に記載の表示システム。
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| JP2022212773 | 2022-12-28 | ||
| JP2022-212773 | 2022-12-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2024143543A1 true WO2024143543A1 (ja) | 2024-07-04 |
Family
ID=91717929
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2023/047288 Ceased WO2024143543A1 (ja) | 2022-12-28 | 2023-12-28 | 表示装置および表示システム |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP4645293A4 (ja) |
| CN (1) | CN120500717A (ja) |
| TW (1) | TW202445548A (ja) |
| WO (1) | WO2024143543A1 (ja) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4711176A1 (en) * | 2024-08-30 | 2026-03-18 | Distance Technologies Oy | Prioritised thermal control for heads-up display |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119225024A (zh) * | 2024-11-27 | 2024-12-31 | 业成科技(成都)有限公司 | 车用抬头显示系统及其发光二极管装置 |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002244581A (ja) * | 2001-02-14 | 2002-08-30 | Koito Ind Ltd | 情報表示装置 |
| JP2003202838A (ja) * | 2001-10-31 | 2003-07-18 | Matsushita Electric Ind Co Ltd | 表示装置 |
| JP2012063646A (ja) * | 2010-09-17 | 2012-03-29 | Nippon Seiki Co Ltd | 表示装置 |
| JP2013225035A (ja) * | 2012-04-23 | 2013-10-31 | Mitsubishi Electric Corp | 映像表示装置及びその制御方法 |
| JP2019510372A (ja) * | 2016-03-10 | 2019-04-11 | イノヴァ セミコンダクトルズ ゲーエムベーハー | Ledの輝度補正のための方法および装置 |
| JP2022528002A (ja) * | 2019-03-29 | 2022-06-07 | クリーエルイーディー,インコーポレーテッド | 発光ダイオードおよび発光ダイオードディスプレイのアクティブ制御 |
| WO2022130863A1 (ja) | 2020-12-16 | 2022-06-23 | ソニーグループ株式会社 | 表示装置及び表示システム |
| JP2022135575A (ja) * | 2021-03-05 | 2022-09-15 | 株式会社デンソー | 表示装置 |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102367970B1 (ko) * | 2017-06-26 | 2022-02-25 | 엘지전자 주식회사 | 디스플레이 디바이스 및 멀티 디스플레이 디바이스 |
| WO2019212635A1 (en) * | 2018-05-04 | 2019-11-07 | Harman International Industries, Incorporated | Reconfigurable optics for multi-plane heads-up displays |
| WO2021054222A1 (ja) * | 2019-09-17 | 2021-03-25 | 株式会社デンソー | 表示装置 |
-
2023
- 2023-12-28 WO PCT/JP2023/047288 patent/WO2024143543A1/ja not_active Ceased
- 2023-12-28 TW TW112151229A patent/TW202445548A/zh unknown
- 2023-12-28 EP EP23912320.1A patent/EP4645293A4/en active Pending
- 2023-12-28 CN CN202380087804.7A patent/CN120500717A/zh active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002244581A (ja) * | 2001-02-14 | 2002-08-30 | Koito Ind Ltd | 情報表示装置 |
| JP2003202838A (ja) * | 2001-10-31 | 2003-07-18 | Matsushita Electric Ind Co Ltd | 表示装置 |
| JP2012063646A (ja) * | 2010-09-17 | 2012-03-29 | Nippon Seiki Co Ltd | 表示装置 |
| JP2013225035A (ja) * | 2012-04-23 | 2013-10-31 | Mitsubishi Electric Corp | 映像表示装置及びその制御方法 |
| JP2019510372A (ja) * | 2016-03-10 | 2019-04-11 | イノヴァ セミコンダクトルズ ゲーエムベーハー | Ledの輝度補正のための方法および装置 |
| JP2022528002A (ja) * | 2019-03-29 | 2022-06-07 | クリーエルイーディー,インコーポレーテッド | 発光ダイオードおよび発光ダイオードディスプレイのアクティブ制御 |
| WO2022130863A1 (ja) | 2020-12-16 | 2022-06-23 | ソニーグループ株式会社 | 表示装置及び表示システム |
| JP2022135575A (ja) * | 2021-03-05 | 2022-09-15 | 株式会社デンソー | 表示装置 |
Non-Patent Citations (1)
| Title |
|---|
| See also references of EP4645293A1 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4711176A1 (en) * | 2024-08-30 | 2026-03-18 | Distance Technologies Oy | Prioritised thermal control for heads-up display |
Also Published As
| Publication number | Publication date |
|---|---|
| TW202445548A (zh) | 2024-11-16 |
| CN120500717A (zh) | 2025-08-15 |
| EP4645293A1 (en) | 2025-11-05 |
| EP4645293A4 (en) | 2025-11-19 |
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