Display device, vehicle-mounted display system and vehicle

Abstract

The utility model provides a display device, a vehicle-mounted display system and a vehicle. According to the display device provided by the utility model, the 3D image and the 2D image can be displayed, and high-resolution display can be kept in the display area of the 2D image, so that the user experience is improved. Specifically, the display area of the display device provided by the invention comprises a first display area and a second display area. Wherein the first display area is used for displaying a three-dimensional (3D) image, and the second display area is used for displaying a two-dimensional (2D) image.

Description

Technical Field

[0001] The present application relates to the fields of display technology and intelligent automobile driving technology, and more specifically, to a display device, a vehicle-mounted display system and a vehicle. Background Art

[0002] In order to improve driving safety, head up display (HUD), especially augmented reality head up display (AR-HUD), has become a hot research direction. AR-HUD can not only improve the driving safety risks caused by the driver lowering his head by projecting important information needed by the driver onto the front windshield of the car. At the same time, it can also integrate the displayed virtual image with the real scene around the car, so that the driver can see the virtual image integrated with the real scene, achieving the visual effect of augmented reality.

[0003] In theory, the navigation lane lines and related warning information projected by the AR HUD should fit the actual road as closely as possible. In order to meet users' continuous pursuit of AR fitting effects, AR-HUD has gradually evolved into multi-focal AR-HUD. However, if the entire area of ​​the HUD is displayed as a 3D picture, the resolution of the picture will be lost, which will affect the driving experience for some pictures with high resolution requirements. Therefore, how to ensure the display quality of pictures with high resolution requirements is a problem that needs to be solved. Utility Model Content

[0004] The present application provides a display device, a vehicle-mounted display system and a vehicle. The display device provided in the present application can display both 3D images and 2D images, and can maintain high-resolution display in the display area of ​​2D images, thereby improving user experience.

[0005] In a first aspect, an embodiment of the present application provides a display device, wherein a display area of ​​the display device includes a first display area and a second display area, wherein the first display area is used to display a three-dimensional 3D image, and the second display area is used to display a two-dimensional 2D image.

[0006] It should be noted that, in the present application, both the 3D image and the 2D image displayed by the display device are virtual images.

[0007] Based on the above solution, the display device provided in the present application can not only display 3D images, but also display 2D images, which can ensure that the resolution of 2D images is not affected, thereby achieving the purpose of improving user experience.

[0008] In combination with the first aspect, in some implementations of the first aspect, the imaging focal lengths of the display device in the first display area include at least two types, and the imaging focal lengths of the display device in the second display area are the same.

[0009] It should be noted that in the present application, the 3D image displayed in the first display area can be, for example, an image of a continuous focal plane generated based on the binocular parallax principle, or it can be multiple different images displayed in different focal planes, for example, different images generated by different image sources through the same imaging optical path, or different images generated by the same light source through different imaging optical paths, which is not limited in the present application. It should also be noted that the 2D image displayed in the second display area can be multiple images or a single image. When multiple images are displayed, the images of the multiple images are on the same focal plane.

[0010] In combination with the first aspect, in some implementations of the first aspect, the display area further includes a third display area, and the third display area displays a 3D image in the first time period and displays a 2D image in the second time period.

[0011] It can be understood that when the third display area displays a 3D image, the area of ​​the display device used to display the 3D image includes the first display area and the third display area. At this time, the display area for displaying the 3D image will become larger; when the third display area displays a 2D image, the area of ​​the display device used to display the 2D image includes the second display area and the third display area. At this time, the display area for displaying the 2D image will become larger.

[0012] Based on the above scheme, the display device provided in the present application can display 3D images and 2D images in a third display area in a time-sharing manner, so that the display area of ​​the display device provided in the present application can be adjusted according to user needs, thereby improving the display flexibility of the display device.

[0013] In combination with the first aspect, in certain implementations of the first aspect, the imaging focal lengths of the display device in the third display area in the first time period include at least two types, and the imaging focal lengths of the display device in the third display area in the second time period are the same.

[0014] In combination with the first aspect, in certain implementations of the first aspect, the imaging range of the first display area and the range of the second display area are related to the content imaged by the display device and the field of view of the imaging by the display device.

[0015] In combination with the first aspect, in some implementations of the first aspect, the number of the first display areas is at least one, and / or the number of the second display areas is at least one.

[0016] In combination with the first aspect, in certain implementations of the first aspect, the position of the first display area and the position of the second display area are related to the content imaged by the display device and the field of view of the imaged by the display device.

[0017] Based on the above solution, the imaging range, position and number of the first display area and the second display area of ​​the display device provided in the present application are related to the content and field of view displayed in each display area.

[0018] It can also be understood that the imaging range, position and number of the third display area are related to the content and field of view displayed in the third display area.

[0019] In combination with the first aspect, in certain implementations of the first aspect, the display device also includes a projection module and at least one reflective element, wherein the projection module is used to project imaging light onto one of the at least one reflective element; and the at least one reflective element is used to reflect the imaging light.

[0020] In a second aspect, an embodiment of the present application provides a vehicle-mounted display system, which includes a display device and a control device in the above-mentioned first aspect and any possible implementation method of the first aspect, and the control device is used to input an image to be displayed to the display device.

[0021] In a third aspect, an embodiment of the present application provides a vehicle, which includes the vehicle-mounted display system of the second aspect above, or the vehicle includes the display device and windshield of the first aspect and any possible implementation of the first aspect, wherein the windshield is used to reflect the imaging light emitted by the display device to the human eye.

[0022] The technical effects of the second and third aspects above can refer to the technical effects of the first aspect and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of an application scenario of the HUD device provided in an embodiment of the present application.

[0024] Figure 2 A schematic diagram of the display principle of a HUD device.

[0025] Figure 3 A schematic diagram of the effect of the first display area of ​​the display device provided in an embodiment of the present application.

[0026] Figure 4 A side view of a display device provided in an embodiment of the present application.

[0027] Figure 5A schematic diagram of the principle of using a cylindrical lens to achieve 3D imaging.

[0028] Figure 6 A schematic diagram of the principle of an electronic grating to achieve 3D imaging.

[0029] Figure 7 The figure is a schematic diagram of the imaging principle of a display device under a backlight technology.

[0030] Figure 8 A schematic diagram of the effect of the second display area of ​​the display device provided in an embodiment of the present application.

[0031] Fig. 9 A schematic diagram of the effect of the third display area of ​​the display device provided in an embodiment of the present application.

[0032] Fig.10 A schematic diagram of a first display device 1000 provided in an embodiment of the present application.

[0033] Fig.11 A schematic diagram of an optical path 1100 of a display device 1000 provided in an embodiment of the present application when applied to a vehicle.

[0034] Fig.12 A circuit diagram of a display device provided in an embodiment of the present application.

[0035] Fig.13 A schematic diagram of a possible functional framework of a vehicle provided in an embodiment of the present application.

[0036] Fig.14 A schematic functional block diagram of a mobile carrier 1400 provided in an embodiment of the present application. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0038] In order to facilitate understanding of the embodiments of the present application, the following explanation is made.

[0039] First, the terms "first", "second", etc. and various numbers in the text descriptions or drawings of the embodiments of the present application shown below are only used for the convenience of description, and are not necessarily used to describe a specific order or sequence, and are not used to limit the scope of the embodiments of the present application. For example, to distinguish different display areas, etc.

[0040] Second, the terms "including" and "having" and any variations thereof in the embodiments of the present application shown below are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or apparatuses.

[0041] Third, in the embodiments of the present application, words such as "exemplarily" or "for example" are used to indicate examples, illustrations or descriptions, and the embodiments or designs described as "exemplarily" or "for example" should not be interpreted as being more preferred or more advantageous than other embodiments or designs. The use of words such as "exemplarily" or "for example" is intended to present related concepts in a specific way for easy understanding.

[0042] Fourth, in the embodiments of the present application, imaging light refers to light carrying an image (or image information) and is used to generate an image.

[0043] Fifth, unless otherwise defined, all terms (including technical terms and scientific terms) used in this application have the same meaning as commonly understood by a person of ordinary skill in the art to which this application belongs. It should also be understood that terms (such as terms defined in commonly used dictionaries) should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and will not be interpreted in an idealized or overly formal sense unless explicitly defined herein.

[0044] Sixth, in the description of the application embodiments, the orientation or position relationship indicated by the terms "on" and the like is defined relative to the orientation or position displayed in the image in the accompanying drawings. It should be understood that these directional terms are relative concepts. They are used for relative description and clarification, rather than indicating or implying that the referred image must have a specific orientation or be displayed in a specific orientation. It may change accordingly with the change of the orientation of the display area in the accompanying drawings, and therefore cannot be understood as a limitation on the present application.

[0045] Seventh, in the embodiments of the present application, "at least two" means two or more. "And / or" describes the association relationship of the associated objects, indicating that three relationships may exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural. The character " / " generally indicates that the associated objects before and after are in an "or" relationship.

[0046] Figure 1 A schematic diagram of an application scenario of the HUD device provided in an embodiment of the present application. Figure 1As shown, the HUD device is set on the car. The HUD device is used to project the vehicle's status information, external object indication information and navigation information into the driver's field of vision through the vehicle's windshield (also called windshield). The status information includes but is not limited to driving speed, mileage, fuel level, water temperature and headlight status. The external object indication information includes but is not limited to safe vehicle distance, surrounding obstacles and reversing images. Navigation information includes but is not limited to direction arrows, distance and driving time.

[0047] Among them, the virtual image corresponding to the navigation information and the indication information of the external object can be superimposed on the real environment outside the vehicle, so that the driver can obtain the visual effect of augmented reality, for example, it can be used for augmented reality (AR) navigation, adaptive cruise, lane departure warning, etc. Since the virtual image corresponding to the navigation information can be combined with the real scene, the HUD device is usually coordinated with the advanced driving assistant system (ADAS) system of the car. In order not to interfere with the road conditions, the virtual image corresponding to the instrument information is usually about 2 to 3 meters away from the human eye. In order to better integrate the virtual image corresponding to the navigation information with the real road surface, the virtual image corresponding to the navigation information is generally about 7 to 15 meters away from the human eye. Among them, the position where the virtual image of the navigation information is located is called the far focal plane, and the plane where the virtual image of the instrument information is located is called the near focal plane.

[0048] Figure 2 The figure is a schematic diagram of the display principle of a HUD device. Among them, the information such as instruments and navigation is displayed through an image source, and the imaging light emitted by the image source carrying the information such as instruments and navigation is reflected to the windshield of the car through a curved reflector, and the imaging light is reflected again into the human eye through the windshield, so that the human eye can see the virtual image formed in front of the windshield. Among them, the image source can also be called the picture generation unit (PGU), which is the core component of the HUD device, generally composed of a light source, an optical film and other optical elements. Generally, it can be achieved through thin film transistor liquid crystal display (TFT-LCD) technology, or digital light processing (DLP) technology, or micro electromechanical system (MEMS) projection technology using laser scanning.

[0049] Currently, for some AR-HUD devices, the entire imaging area is a 3D display area, that is, the display screen seen by the human eye is a 3D image. However, in order to achieve the effect of 3D images, the resolution of the image needs to be lost as a price, or the brightness of the image needs to be sacrificed, especially for some images that do not require 3D display, which greatly affects the viewing effect of users.

[0050] In view of this, the present application proposes a display device that has the effect of displaying 3D images and 2D images at the same time, which can be applied to HUD devices, so that the images in the imaging area of ​​the HUD that do not require 3D imaging maintain a high resolution, thereby achieving the effect of improving user experience.

[0051] Figure 3 This is a schematic diagram of the effect of the first display area of ​​the display device provided in the embodiment of the present application. Figure 3 In the embodiment, the display area of ​​the display device is divided into a first display area 310 and a second display area 320. The first display area 310 is used to display a three-dimensional (3D) image, and the second display area is used to display a two-dimensional (2D) image. Specifically, the imaging focal length of the display device in the first display area 310 includes at least two types, and the imaging focal length of the display device in the second display area is the same.

[0052] It should be noted that, in the present application, the 3D image displayed in the first display area 310, for example, can be an image of a continuous focal plane generated based on the principle of binocular parallax, or can also be a plurality of different images displayed at different focal planes, for example, different images generated by different image sources through the same imaging optical path, or different images generated by the same light source through different imaging optical paths, which is not limited in the present application. It should also be noted that the 2D image displayed in the second display area 320 can be a plurality of images or a single image, and when a plurality of images are displayed, the images of the plurality of images are imaged on the same focal plane. In addition, in the present application, although the first display area 310 is used to display a 3D image, the first display area 310 can also display a 2D image, but the resolution of the 2D image displayed by the first display area 310 will be lost compared to the resolution of the second display area 320 which is only used to display a 2D image. It should also be noted that, in the present application, both the 3D image and the 2D image displayed by the display device are virtual images.

[0053] It is understandable that in the present application, the display area is the imaging range of the display device. The names of the first display area 310 and the second display area 320 are only exemplary, and other names may also be used. For example, the first display area 310 may also be called a 3D display area 310, or a multi-focal display area 310, etc. The second display area 320 may also be called a 2D display area 320, or a single-focal display area 320, etc., and this application does not limit this.

[0054] It should be noted that the present application does not limit the imaging principle of the first display area 310. For example, a common method may be to use a cylindrical lens structure using the basic principle of binocular parallax of the human eye, or an electronic grating structure (also referred to as a parallax fence) using the basic principle of binocular parallax of the human eye, or it may be implemented using a directional backlight technology (also referred to as a directional light source technology), etc.

[0055] In some embodiments, when the first display area 310 is implemented by a cylindrical lens structure, the side view of the display device is as follows: Figure 4 As shown, the light emitting surface of the display device corresponding to the first display area 310 is provided with a cylindrical lens (ie Figure 4 The light-emitting surface of the display device corresponding to the second display area 320 is not provided with a cylindrical lens (i.e. Figure 4 Specifically, Figure 5 The following is a schematic diagram of the principle of a cylindrical lens to achieve 3D imaging. Figure 5 As shown, a layer of cylindrical lens is added in front of the LCD screen, and the image plane of the LCD screen is located on the focal plane of the lens, so that the cylindrical lens can project each sub-pixel in different directions. When the human eye views the imaging light emitted from the cylindrical lens at different angles from different angles, different sub-pixels are seen, thereby achieving a 3D imaging effect.

[0056] It is understandable that the area of ​​the light emitting surface 1 of the display device provided with a cylindrical lens structure is related to the imaging range of the first display area 310. Similarly, the area of ​​the light emitting surface 2 of the display device without a cylindrical lens structure is related to the imaging range of the second display area 320.

[0057] It should be noted that when Figure 4 When the display device shown is applied to a HUD device, the display device is a picture generation unit (PGU) in the HUD device. The display device can be combined with a reflective element and pass through a windshield so that the human eye can see a 3D virtual image.

[0058] In other embodiments, when the first display area 310 is implemented by an electronic grating structure, the display device may include an electronic grating formed by a combination of a crystal layer and a polarizing film, which is usually arranged on the light-emitting surface of the display device. The electronic grating is generally implemented by modifying the circuit of the display screen and matching the thin film plated on the outer surface of the display screen. Specifically, Figure 6 The schematic diagram of an electronic grating to achieve 3D imaging. Figure 6 As shown, when the electronic grating is working, the slight parallax caused by the distance between the two eyes of the human eye will cause the opaque stripes to block the left and right eyes, so that the pixels of the LCD screen seen by the left eye and the right eye are different, thereby achieving a 3D imaging effect. In some other embodiments, when the first display area 310 is implemented by directional backlight technology, Figure 7 This is a schematic diagram of the imaging principle of a display device under a backlight technology. Figure 7 As shown, the display device uses two sets of light emitting diodes (LEDs) at different angles as light sources and is arranged on a track, with a high refresh rate liquid crystal display (LCD) display panel and a Fresnel lens to refract and reflect light. When the display device forms an image, it reflects light to the left and right eyes respectively in an odd-even frame staggered order through time division, thereby achieving a 3D imaging effect.

[0059] It should be noted that the above Figures 4 to 7 The 3D imaging effect is achieved by modifying the structure of the display device. The display device for displaying 3D images is not limited in this application, for example, it can be a naked eye 3D display, or it can be a PGU in a HUD device.

[0060] It should also be noted that, in the present application, the imaging range of the first display area 310 and the second display area 320 is related to the content of the imaging of the display device and the field of view of the imaging of the display device. Specifically, since the second display area 320 needs to display higher-resolution images, such as dashboards, small maps, etc., these images generally occupy a smaller area of ​​the frame, so the imaging range of the second display area 320 is smaller than that of the first display area 310. For the first display area 310, what it pursues is the degree of integration and fit with the real scene, such as zebra crossings, road icons, and sometimes 3D dashboards, etc. These images are generally larger, so they can be set at a position with a higher field of view and occupy a larger frame area. It can be understood that in Figure 3In the imaging range shown, the imaging range of the first display area 310 is rectangular, located above the entire frame, and occupies most of the frame area. The imaging range of the second display area 320 is also rectangular, located below the entire frame, and occupies a small part of the frame area.

[0061] It should also be noted that the solution of the present application does not limit the number of the first display area 310 and the second display area 320, wherein the number of the first display area 310 is at least one, and the number of the second display area is at least one. Figure 8 This is a schematic diagram of the effect of the second display area of ​​the display device provided in the embodiment of the present application. Figure 8 As shown, the number of the second display areas is two, namely Figure 8 821 and 822 in the figure. The imaging ranges of the second display area 821 and the second display area 822 are each 1 / 4 of a circle. The imaging range of the first display area 810 is an irregular pattern.

[0062] In addition, the position of the first display area 310 and the position of the second display area 320 are related to the content of the imaging of the display device and the field of view of the imaging of the display device. Specifically, since the focal length of the imaging of the second display area 320 is fixed and single, it is generally used to display images that require higher resolution, such as instrument panels, small maps, etc. At the same time, since these images are always displayed images and do not seek to be integrated with the real scene, these images can be set at positions with lower field of view angles. In other words, the position of the second display area 320 in the entire frame is generally set in an area with a lower field of view angle. For the first display area 310, in pursuit of the degree of integration and fit with the real scene, the first display area 310 is generally set at a position with a higher field of view angle. That is, the position in the entire frame is an area with a higher field of view angle. It can be understood that in Figure 3 In the imaging range shown, the imaging range of the first display area 310 is rectangular, located above the entire frame, and occupies most of the frame area. The imaging range of the second display area 320 is also rectangular, located below the entire frame, and occupies a small part of the frame area. Fig. 9 This is a schematic diagram of the effect of the third display area of ​​the display device provided in the embodiment of the present application. Fig. 9In the embodiment, the display area of ​​the display device is divided into a first display area 910, a second display area 920 and a third display area 930. Specifically, the third display area 930 displays a 3D image in a first time period and displays a 2D image in a second time period. That is, the imaging focal length of the display device in the third display area 930 can be switched between at least two imaging focal lengths and one imaging focal length. When the imaging focal length of the display device in the third display area 930 is switched to at least two types, the third display area 930 is a part of the first display area 910, and when the imaging focal length of the display device in the third display area 930 is switched to one type, the third display area 930 is a part of the second display area 920. It can be understood that in Fig. 9 In the embodiment, the imaging ranges of the first display area and the second display area may vary depending on whether the third display area is the first display area or the second display area.

[0063] It is understandable that the name of the third display area is only exemplary, and other names may also be used, such as zoom display area, or variable focus surface display area, etc., which is not limited in this application.

[0064] It should be noted that the present application does not limit the imaging principle of the third display area 930. For example, a liquid crystal lens may be used to realize the mutual conversion between 2D display and 3D display. By controlling the voltage distribution of the corresponding electrodes in the liquid crystal layer, the refractive index distribution of the liquid crystal lens is changed accordingly, presenting a distribution similar to that of a solid-state lens, thereby controlling the distribution of the light emitted by a group of pixels to achieve the effect of three-dimensional stereoscopic display or two-dimensional plane display.

[0065] It should be noted that in the present application, the imaging range, position and number of the first display area 910, the second display area 920 and the third display area 930 are related to the content of the display device imaging and the field of view of the display device imaging. Specifically, when the first display area with a larger imaging range is required, the third display area 930 is switched to the first display area. When the second display area with a larger imaging range is required, the third display area 930 is switched to the second display area. Specifically, the description of the imaging range, position and number of the first display area 910 and the second display area 920 can refer to the above Figure 3 Instructions in .

[0066] Based on the above solution, the present application can improve the flexibility of display area design by designing a third display area for displaying 3D images and 2D images in a time-sharing manner, thereby enhancing the user experience.

[0067] Regarding the above Figure 3 , Figure 8 and Fig. 9 Embodiment, it should be noted that:

[0068] (1) In the various embodiments of the present application, unless otherwise specified or logically conflicting, the terms and / or descriptions between different embodiments are consistent and may be referenced to each other.

[0069] (2) Above Figure 3 , Figure 8 and Fig. 9 The division of the imaging range of the display device in the embodiment is only an exemplary description and does not limit the scope of protection of the present application. In other words, the division of the imaging range of the first display area, the second display area, and / or the third display area of ​​the display device of the present application can also be based on other factors and divided into other shapes, areas, different positions and quantities. For example, when the display device provided in the embodiment of the present application is applied to a HUD device, the imaging range of the first display area, the second display area, and / or the third display area of ​​the display device can be customized according to the needs of different drivers or vehicle models.

[0070] Above, combined Figure 3 , Figure 8 and Fig. 9 The present application provides several display effects in detail. Fig.10 and Fig.11 The display devices provided in the present application are described respectively.

[0071] Fig.10 Schematic diagram of a first display device 1000 provided in an embodiment of the present application. Fig.10 As shown, the display device 1000 includes a projection module 1001, a first reflective element 1002, and a second reflective element 1003. The projection module 1001 is used to emit image light to the first reflective element 1002, and the first reflective element 1002 is used to reflect the image light from the projection module 1001 to the second reflective element 1003. The second reflective element 1003 is used to reflect the image light from the first reflective element 1002 out of the display device 1000.

[0072] Optionally, the display device 1000 may further include a diffusion screen 1004 , which is located on the optical path between the projection module 1001 and the first reflective element 1002 , and is used to generate an amplified relay image based on the image light from the projection module 1001 .

[0073] Optionally, the display device 1000 may further include a dust cover 1005. The dust cover 1005 has the functions of isolating the external high temperature, preventing the internal temperature of the display device 1000 from being too high, or preventing external dust from entering the device.

[0074] In the embodiment of the present application, the projection module 1001 can adopt a liquid crystal on silicon (LCoS) display, an organic light-emitting diode (OLED) display, an LCD display, a digital light processing (DLP) display or a micro-electro-mechanical system (MEMS) display, etc., which is not limited in the present application. It can be understood that the principle of the projection module 1001 for displaying 3D images can refer to the above Figures 5 to 7 In this case, the projection module can adopt a corresponding structure to realize 3D imaging.

[0075] It should be noted that in Fig.10 In the display device 1000 shown, the first reflective element 1002 may be a concave mirror, a convex mirror, or a plane mirror with a free-form surface, which is not limited in the present application.

[0076] It is understandable that the number of reflective elements included in the display device 1000 is not limited to Fig.10 As shown, it can be adjusted accordingly according to needs.

[0077] When the display device 1000 is applied to a vehicle, Fig.11 The display device 1000 provided in the embodiment of the present application is applied to the optical path 1100 of a vehicle. Specifically, the projection module 1001 generates image light and projects the image light to the diffusion screen 1004. While the diffusion screen 1004 generates a relay image, it transmits the image light from the projection module 1001 to the first reflection element 1002. Then, the first reflection element 1002 reflects the image light from the diffusion screen 1004 to the second reflection element 1003. After the image light is reflected by the second reflection element 1003 and transmits the light shield 1005, it is reflected to the human eye through the windshield 1101 for imaging. Among them, the image generated by the image light includes a 3D image and a 2D image. The 3D image can be an augmented reality display image for displaying information such as indication information and navigation information of external objects. The 2D image can be a status display image for displaying the status information of the vehicle. Taking a car as an example, the status information of the vehicle includes but is not limited to information such as driving speed, mileage, fuel level, water temperature, and light status.

[0078] It is understandable that the means of transportation to which the present application scheme can be applied include but are not limited to cars, airplanes, trains or ships.

[0079] In addition, the embodiment of the present application further provides a means of transportation, which is any of the above-mentioned display devices. The means of transportation includes but is not limited to a car, an airplane, a train, or a ship.

[0080] Fig.12 This is a circuit diagram of a display device provided in an embodiment of the present application. Fig.12 As shown, the circuit in the display device mainly includes a host CPU 1201, an external memory interface 1202, an internal memory 1203, an audio module 1204, a video module 1205, a power module 1206, a wireless communication module 1207, an I / O interface 1208, a video interface 1209, a display circuit 1210 and a modulator 1212. Among them, the host processor 1201 and its peripheral components, such as the external memory interface 1202, the internal memory 1203, the audio module 1204, the video module 1205, the power module 1206, the wireless communication module 1207, the I / O interface 1208, the video interface 1209, and the display circuit 1210 can be connected through a bus. The host processor 1201 can be called a front-end processor.

[0081] In addition, the circuit diagrams shown in the embodiments of the present application do not constitute a specific limitation on the display device. In other embodiments of the present application, the display device may include more or fewer components than shown in the figure, or combine certain components, or split certain components, or arrange the components differently. The components shown in the figure may be implemented in hardware, software, or a combination of software and hardware.

[0082] The main processor 1201 includes one or more processing units, for example, the main processor 1201 may include an application processor (AP), a modem processor, a graphics processor (GPU), an image signal processor (ISP), a controller, a video codec, a digital signal processor (DSP), a baseband processor, and / or a neural network processor (NPU), etc. Different processing units may be independent devices or integrated in one or more processors.

[0083] The main processor 1201 may also be provided with a memory for storing instructions and data. In some embodiments, the memory in the main processor 1201 is a cache memory. The memory may store instructions or data that the main processor 1201 has just used or cyclically used. If the main processor 1201 needs to use the instruction or data again, it may be directly called from the memory. This avoids repeated access, reduces the waiting time of the main processor 1201, and thus improves the efficiency of the system.

[0084] In some embodiments, the display device may further include a plurality of input / output (I / O) interfaces 1208 connected to the main processor 1201. The interface 1208 may include an inter-integrated circuit (I2C) interface, an inter-integrated circuit sound (I2S) interface, a pulse code modulation (PCM) interface, a universal asynchronous receiver / transmitter (UART) interface, a mobile industry processor interface (MIPI), a general-purpose input / output (GPIO) interface, a subscriber identity module (SIM) interface, and / or a universal serial bus (USB) interface, etc. The above-mentioned I / O interface 1208 may be connected to devices such as a mouse, a touchpad, a keyboard, a camera, a speaker / speaker, a microphone, etc., and may also be connected to physical buttons on the display device (such as a volume button, a brightness adjustment button, a power button, etc.).

[0085] The external memory interface 1202 can be used to connect an external memory card, such as a Micro SD card, to expand the storage capacity of the display device. The external memory card communicates with the main processor 1201 through the external memory interface 1202 to implement a data storage function.

[0086] The internal memory 1203 can be used to store computer executable program codes, which include instructions. The internal memory 1203 may include a program storage area and a data storage area. Among them, the program storage area may store an operating system, an application required for at least one function (such as a call function, a time setting function, etc.), etc. The data storage area may store data created during the use of the display device (such as a phone book, world time, etc.), etc. In addition, the internal memory 1203 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk storage device, a flash memory device, a universal flash storage (Universal Flash Storage, UFS), etc. The main processor 1201 executes various functional applications and data processing of the display device by running instructions stored in the internal memory 1203 and / or instructions stored in a memory provided in the main processor 1201.

[0087] The display device can implement audio functions such as music playing and calls through the audio module 1204 and the application processor.

[0088] The audio module 1204 is used to convert digital audio information into analog audio signal output, and is also used to convert analog audio input into digital audio signals. The audio module 1204 can also be used to encode and decode audio signals, such as playing or recording. In some embodiments, the audio module 1204 can be arranged in the main processor 1201, or some functional modules of the audio module 1204 can be arranged in the main processor 1201.

[0089] The video interface 1209 can receive external audio and video signals, which can be specifically a high-definition multimedia interface (HDMI), a digital video interface (DVI), a video graphics array (VGA), a display port (DP), etc. The video interface 1209 can also output video to the outside. When the display device is used as a head-up display, the video interface 1209 can receive speed signals and power signals input from peripheral devices, and can also receive external AR video signals. When the display device is used as a projector, the video interface 1209 can receive video signals input from an external computer or terminal device.

[0090] The video module 1205 can decode the video input by the video interface 1209, for example, by performing H.264 decoding. The video module can also encode the video collected by the display device, for example, by performing H.264 encoding on the video collected by the external camera. In addition, the main processor 1201 can also decode the video input by the video interface 1209, and then output the decoded image signal to the display circuit 1210.

[0091] The display circuit 1210 and the modulator 1212 are used to display the corresponding image. In this embodiment, the video interface 1209 receives an external video source signal, and the video module 1205 decodes and / or digitally processes and outputs one or more image signals to the display circuit 1210. The display circuit 1210 drives the modulator 1212 to image the incident polarized light according to the input image signal, and then outputs the image light. In addition, the main processor 1201 can also output one or more image signals to the display circuit 1210.

[0092] In this embodiment, the display circuit 1210 may be referred to as a driving circuit.

[0093] The power module 1206 is used to provide power to the main processor 1201 and the light source 1200 according to the input power (e.g., direct current), and the power module 1206 may include a rechargeable battery, which can provide power to the main processor 1201 and the light source 1200. The light emitted by the light source 1200 can be transmitted to the modulator 1212 for imaging, thereby forming an image light signal.

[0094] The wireless communication module 1207 enables the display device to communicate wirelessly with the outside world, and can provide wireless local area networks (WLAN) (such as wireless fidelity (Wi-Fi) networks), Bluetooth (BT), global navigation satellite system (GNSS), frequency modulation (FM), near field communication technology (NFC), infrared technology (IR) and other wireless communication solutions. The wireless communication module 1207 can be one or more devices integrating at least one communication processing module. The wireless communication module 1207 receives electromagnetic waves via an antenna, modulates the frequency of the electromagnetic wave signal and performs filtering processing, and sends the processed signal to the main processor 1201. The wireless communication module 1207 can also receive the signal to be sent from the main processor 1201, modulate the frequency of the signal, amplify it, and convert it into electromagnetic waves for radiation through the antenna.

[0095] In addition, in addition to being input through the video interface 1209, the video data decoded by the video module 1205 can also be wirelessly received through the wireless communication module 1207 or read from an external memory. For example, the display device can receive video data from a terminal device or an in-vehicle entertainment system through the wireless LAN in the vehicle, and the display device can also read audio and video data stored in an external memory.

[0096] The above display device can be installed on a vehicle, see Fig.13 , Fig.13 A schematic diagram of a possible functional framework of a vehicle provided in an embodiment of the present application.

[0097] like Fig.13 As shown, the functional framework of the vehicle may include various subsystems, such as the sensor system 12, the control system 14, one or more peripheral devices 16 (one is shown as an example), the power supply 18, the computer system 20 and the head-up display system 22. Optionally, the vehicle may also include other functional systems, such as an engine system that provides power for the vehicle, etc., which is not limited in this application.

[0098] The sensor system 12 may include a number of detection devices, which can sense the measured information and convert the sensed information into electrical signals or other required forms of information output according to a certain rule. As shown in the figure, these detection devices may include a global positioning system (GPS), a vehicle speed sensor, an inertial measurement unit (IMU), a radar unit, a laser rangefinder, a camera device, a wheel speed sensor, a steering sensor, a gear position sensor, or other components for automatic detection, etc., and the present application does not limit them.

[0099] The control system 14 may include several components, such as the steering unit, brake unit, lighting system, automatic driving system, map navigation system, network timing system and obstacle avoidance system shown in the figure. Optionally, the control system 14 may also include components such as a throttle controller and an engine controller for controlling the vehicle's speed, which are not limited in this application.

[0100] The peripheral device 16 may include several components, such as the communication system, touch screen, user interface, microphone, and speaker shown in the figure. The communication system is used to realize network communication between the vehicle and other devices other than the vehicle. In practical applications, the communication system may use wireless communication technology or wired communication technology to realize network communication between the vehicle and other devices. The wired communication technology may refer to communication between the vehicle and other devices through network cables or optical fibers.

[0101] The power source 18 represents a system that provides power or energy for the vehicle, which may include but is not limited to a rechargeable lithium battery or a lead-acid battery, etc. In practical applications, one or more battery components in the power source are used to provide power or energy for starting the vehicle, and the type and material of the power source are not limited in this application.

[0102] Several functions of the vehicle are controlled and implemented by the computer system 20. The computer system 20 may include one or more processors 2001 (one processor is shown as an example in the figure) and a memory 2002 (also referred to as a storage device). In actual applications, the memory 2002 is also inside the computer system 20, or it may be outside the computer system 20, for example, as a cache in the vehicle, etc., which is not limited in this application.

[0103] in,

[0104] The processor 2001 may include one or more general-purpose processors, such as a graphics processing unit (GPU). The processor 2001 may be used to run related programs or instructions corresponding to the programs stored in the memory 2002 to implement corresponding functions of the vehicle.

[0105] The memory 2002 may include a volatile memory, such as a RAM; the memory may also include a non-volatile memory, such as a ROM, a flash memory, a HDD or a solid-state drive SSD; the memory 2002 may also include a combination of the above-mentioned types of memories. The memory 2002 may be used to store a set of program codes or instructions corresponding to the program codes, so that the processor 2001 calls the program codes or instructions stored in the memory 2002 to implement the corresponding functions of the vehicle. In the present application, a set of program codes for vehicle control may be stored in the memory 2002, and the processor 2001 calls the program codes to control the safe driving of the vehicle. How to achieve safe driving of the vehicle is described in detail below in the present application.

[0106] Optionally, in addition to storing program codes or instructions, the memory 2002 may also store information such as road maps, driving routes, sensor data, etc. The computer system 20 may be combined with other elements in the vehicle functional framework diagram, such as sensors in the sensor system, GPS, etc., to implement relevant functions of the vehicle. For example, the computer system 20 may control the driving direction or driving speed of the vehicle based on the data input from the sensor system 12, which is not limited in this application.

[0107] The head-up display system 22 may include several components, such as the windshield shown in the figure, a controller and a head-up display. The controller 222 is used to generate images according to user instructions (for example, images containing vehicle status such as vehicle speed, battery / fuel level, and images of augmented reality AR content), and send the image to the head-up display for display; the head-up display may include an image generation unit and a reflector combination, and the windshield is used to cooperate with the head-up display to realize the optical path of the head-up display system so that the target image is presented in front of the driver. Among them, the functions of some components in the head-up display system can also be implemented by other subsystems of the vehicle. For example, the controller can also be a component in the control system.

[0108] Among them, this application Fig.13 The four subsystems shown are sensor system 12, control system 14, computer system 20 and head-up display system 22, which are only examples and do not constitute limitations. In actual applications, vehicles can combine several components in the vehicle according to different functions to obtain subsystems with corresponding different functions. In actual applications, vehicles can include more or fewer systems or components, which is not limited in this application.

[0109] The above-mentioned means of transportation can be a car, truck, motorcycle, bus, ship, airplane, helicopter, lawn mower, recreational vehicle, amusement park vehicle, construction equipment, tram, golf cart, train, and cart, etc., and the embodiments of the present application are not particularly limited.

[0110] Fig.14 A schematic functional block diagram of a mobile carrier 1400 provided in an embodiment of the present application. The mobile carrier 1400 may include a perception system 120, a display device 130, and a computing platform 150, wherein the perception system 120 may include one or more sensors for sensing information about the environment around the mobile carrier 1400. For example, the perception system 120 may include a positioning system, and the positioning system may be a global positioning system (GPS), or a Beidou system or other positioning systems, an inertial measurement unit (IMU), a laser radar, a millimeter wave radar, an ultrasonic radar, and a camera device. One or more.

[0111] Some or all functions of the mobile carrier 1400 may be controlled by the computing platform 150. The computing platform 150 may include one or more processors, such as processor 151, processors 152 to 15n (n is a positive integer). The processor is a circuit with signal processing capability. In one implementation, the processor may be a circuit with instruction reading and execution capability, such as a central processing unit (CPU), a microprocessor, a graphics processing unit (GPU) (which can be understood as a microprocessor), or a digital signal processor (DSP); in another implementation, the processor may implement certain functions through the logical relationship of a hardware circuit, and the logical relationship of the hardware circuit is fixed or reconfigurable, such as a hardware circuit implemented by a processor as an application-specific integrated circuit (ASIC) or a programmable logic device (PLD), such as a field programmable gate array (FPGA). In a reconfigurable hardware circuit, the process of the processor loading a configuration document to implement the hardware circuit configuration can be understood as the process of the processor loading instructions to implement the functions of some or all of the above units. In addition, it can also be a hardware circuit designed for artificial intelligence, which can be understood as an ASIC, such as a neural network processing unit (NPU), a tensor processing unit (TPU), a deep learning processing unit (DPU), etc. In addition, the computing platform 150 can also include a memory, the memory is used to store instructions, and some or all of the processors 151 to 15n can call the instructions in the memory and execute the instructions to achieve the corresponding functions. Among them, the display device 130 in the cockpit is a display device suitable for the embodiment of the present application, such as the display device 300 in the above embodiment.

[0112] The mobile carrier in the present application may include a road vehicle, a water vehicle, an air vehicle, or an entertainment device, etc. For example, the mobile carrier may be a vehicle, which is a vehicle in a broad sense, and may be a vehicle (such as a commercial vehicle, a passenger car, a train, etc.), an amusement device, a toy vehicle, etc. The embodiment of the present application does not specifically limit the type of vehicle. For another example, the mobile carrier may be a vehicle such as an airplane or a ship.

[0113] The embodiment of the present application also provides a vehicle-mounted display system, which includes a control device and a display device as in the above embodiment, wherein the control device is used to input an image to be displayed to the display device.

[0114] Unless otherwise defined, the technical terms or scientific terms used herein shall have the usual meanings understood by persons with ordinary skills in the field to which the present disclosure belongs. The above descriptions are only a few embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made on the basis of the present application shall be included in the protection scope of the present application.

Claims

1. A display device, characterized in that: include: The display area of ​​the display device includes a first display area and a second display area. The first display area is used to display a three-dimensional 3D image, and the second display area is used to display a two-dimensional 2D image.

2. The display device according to claim 1, characterized in that The imaging focal lengths of the display device in the first display area include at least two types, and the imaging focal lengths of the display device in the second display area are the same.

3. The display device according to claim 1 or 2, characterized in that: The display area further includes a third display area, wherein the third display area displays a 3D image in a first time period and displays a 2D image in a second time period.

4. The display device according to claim 3, characterized in that: The imaging focal lengths of the display device in the third display area in the first time period include at least two types, and the imaging focal lengths of the display device in the third display area in the second time period are the same.

5. The display device according to claim 1 or 2, characterized in that: The imaging range of the first display area and the range of the second display area are related to the content imaged by the display device and the field of view of the imaging by the display device.

6. The display device according to claim 1 or 2, characterized in that: The number of the first display areas is at least one, and / or the number of the second display areas is at least one.

7. The display device according to claim 1 or 2, characterized in that: The position of the first display area and the position of the second display area are related to the content imaged by the display device and the field of view of the imaged by the display device.

8. The display device according to claim 1 or 2, characterized in that: The display device further comprises a projection module and at least one reflective element, wherein: The projection module is used to project imaging light onto one of the at least one reflective element; The at least one reflective element is used to reflect the imaging light.

9. A vehicle-mounted display system, characterized in that: The device comprises a control device and a display device as claimed in claim 1 or 2, wherein the control device is used to input an image to be displayed to the display device.

10. A means of transport, characterized in that: It comprises the vehicle-mounted display system as claimed in claim 9, or comprises the display device and windshield as claimed in claim 1 or 2, wherein the windshield is used to reflect the imaging light emitted by the display device to the human eye.

Images