CN114200674A - Display apparatus, vehicle, and control method - Google Patents
Display apparatus, vehicle, and control method Download PDFInfo
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- CN114200674A CN114200674A CN202111248204.3A CN202111248204A CN114200674A CN 114200674 A CN114200674 A CN 114200674A CN 202111248204 A CN202111248204 A CN 202111248204A CN 114200674 A CN114200674 A CN 114200674A
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- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 12
- 230000001276 controlling effect Effects 0.000 claims description 10
- 239000011241 protective layer Substances 0.000 claims description 9
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- 239000012790 adhesive layer Substances 0.000 claims description 6
- 239000002131 composite material Substances 0.000 claims description 5
- 230000001960 triggered effect Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 16
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- 230000036961 partial effect Effects 0.000 description 2
- 238000005424 photoluminescence Methods 0.000 description 2
- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 description 2
- -1 Polyethylene vinyl acetate Polymers 0.000 description 1
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- 230000008094 contradictory effect Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 230000002688 persistence Effects 0.000 description 1
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- 230000002829 reductive effect Effects 0.000 description 1
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
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Images
Classifications
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- 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
- G02B27/0101—Head-up displays characterised by optical features
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R11/00—Arrangements for holding or mounting articles, not otherwise provided for
- B60R11/02—Arrangements for holding or mounting articles, not otherwise provided for for radio sets, television sets, telephones, or the like; Arrangement of controls thereof
- B60R11/0229—Arrangements for holding or mounting articles, not otherwise provided for for radio sets, television sets, telephones, or the like; Arrangement of controls thereof for displays, e.g. cathodic tubes
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- 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
- G02B27/0149—Head-up displays characterised by mechanical features
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R11/00—Arrangements for holding or mounting articles, not otherwise provided for
- B60R2011/0001—Arrangements for holding or mounting articles, not otherwise provided for characterised by position
- B60R2011/0003—Arrangements for holding or mounting articles, not otherwise provided for characterised by position inside the vehicle
- B60R2011/0026—Windows, e.g. windscreen
Abstract
The application discloses a display device, a vehicle and a control method, and relates to the field of display. The display device comprises a display component, a light source device, a direction regulator and a controller; the controller is connected with the light source device and controls the light source device to emit laser, and the light source device provides laser for the display assembly; wherein the display assembly comprises a fluorescent coating; the area of the fluorescent coating layer irradiated by the laser from the light source device is a light-emitting area, and the light-emitting area presents an image; the direction regulator is used for regulating the direction of the laser emitted by the light source device; the laser light from the light source device is emitted onto the fluorescent coating of the display assembly under the adjustment of the direction adjuster.
Description
Technical Field
The present application relates to the field of display, and in particular, to a display device, a vehicle, and a control method.
Background
With the development of technology, display technology is also more advanced. For example, some images may be displayed on a transparent screen.
At present, display devices on the market that can display an image on a transparent screen present a virtual image of the image to be displayed in front of the transparent screen through the reflection action of the transparent screen. A windshield head-up display (W-HUD) or a combined head-up display (C-HUD) is commonly used as such a display device. The windshield head-up display not only occupies a large space, but also has high requirements on the curvature and the precision of the front windshield and high cost. And the combined head-up display has strong emulational feeling because a transparent projection screen is additionally arranged behind the front windshield and is easy to cause secondary damage when collision occurs.
In order to overcome the above-mentioned drawbacks of both displays, a new display device that can display an image on a transparent screen is required to be costly.
Disclosure of Invention
The embodiment of the application provides a display device, a vehicle and a control method, and solves the problems in the prior art.
In a first aspect, there is provided a display apparatus comprising a display assembly, a light source device, a direction adjuster, and a controller; the controller is connected with the light source device and controls the light source device to emit laser, and the light source device provides laser for the display assembly;
wherein the display assembly comprises a fluorescent coating; the area of the fluorescent coating layer irradiated by the light from the light source device is a light-emitting area, and the light-emitting area presents an image;
the direction regulator is used for regulating the direction of the laser emitted by the light source device;
the laser light from the light source device is emitted onto the fluorescent coating of the display assembly under the adjustment of the direction adjuster.
In a second aspect, a vehicle is provided, the vehicle comprising the display device of the first aspect.
In a third aspect, there is provided a method of controlling the display apparatus of the first aspect, the method comprising:
acquiring a target image;
generating a target control signal according to the target image;
sending the target control signal to the light source device; wherein the target control signal is used for controlling the light source device to emit laser light at a target time point, so that the laser light is emitted onto the fluorescent coating of the display component under the adjustment of the direction adjuster.
In an embodiment of the present application, a display apparatus includes a display assembly, a light source device, and a direction adjuster controller; the controller is connected with the light source device and controls the light source device to emit laser, and the light source device provides laser for the display assembly; wherein the display assembly comprises a fluorescent coating; the area of the fluorescent coating layer irradiated by the light from the light source device is a light-emitting area, and the light-emitting area presents an image; the direction regulator is used for regulating the direction of the laser emitted by the light source device; the laser light from the light source device is emitted onto the fluorescent coating of the display assembly under the adjustment of the direction adjuster. Because the direction regulator can regulate the direction of the laser emitted by the light source device, the laser is emitted to the fluorescent coating of the display component, the area of the fluorescent coating irradiated by the light from the light source device is a light-emitting area, the light-emitting area can present an image, and the presented image is not influenced by the curvature and the precision of the display component. Therefore, compared with a windshield head-up display (W-HUD), the display device provided in the embodiment of the present application has a lower performance requirement on the display element, and thus can save cost, and meanwhile, compared with a combined head-up display (C-HUD), the display device cannot be damaged by a secondary collision.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
fig. 1 is a schematic structural diagram of a display device according to an embodiment of the present application.
Fig. 2 is a schematic structural diagram of an assembly including a display module and an auxiliary display module according to an embodiment of the present disclosure.
Fig. 3 is a schematic structural diagram of a display module according to an embodiment of the present disclosure.
Fig. 4 is a schematic structural diagram of an auxiliary display assembly according to an embodiment of the present disclosure.
Fig. 5 is a schematic structural diagram of another combined body including a display module and an auxiliary display module according to an embodiment of the present application.
Fig. 6 is a schematic structural diagram of a direction regulator according to an embodiment of the present disclosure.
Fig. 7 is a schematic structural diagram of another display device provided in an embodiment of the present application.
Fig. 8 is a schematic structural diagram of another display device provided in an embodiment of the present application.
Fig. 9 is a flowchart of a control method of the display device according to an embodiment of the present application.
Description of reference numerals:
100-display assembly, 110-fluorescent coating, 120-protective layer, 200-light source device, 300-controller, 400-auxiliary display assembly, 410-glass outer sheet, 420-adhesive layer, 430-glass inner sheet, 500-direction regulator, 510-horizontal rotating wheel, 520-vertical rotating wheel
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Fig. 1 is a schematic structural diagram of a display device according to an embodiment of the present application.
As shown in fig. 1, the display apparatus includes a display assembly 100, a light source device 200, a direction adjuster 500, and a controller 300; the controller 300 is connected to the light source device 200, and controls the light source device 200 to emit laser light, and the light source device 200 provides the laser light to the display module 100;
wherein the display assembly 100 includes a fluorescent coating; the area of the fluorescent coating layer irradiated with light from the light source device 200 is a light-emitting area, and the light-emitting area presents an image.
The direction regulator 500 is used for regulating the direction of the light emitted by the light source device 200; the light from the light source device 200 is incident on the fluorescent coating of the display assembly 100 under the adjustment of the direction regulator 500.
It should be noted that the controller 300 may also be connected to the direction regulator 500.
The display assembly 100 may be a transparent glass product, for example, the display assembly 100 may be a front windshield of an automobile, a window glass of a home, a window glass of a door, or the like. The display device that this application embodiment provided can be applied to the car promptly, also can be applied to other fields, for example be applied to in the intelligent house. The light source device 200 may provide laser light to the display module 100, and the light source device 200 may emit light such as ultraviolet laser light or x-ray. The fluorescent coating may be made of a fluorescent paint, which means a paint capable of emitting light when irradiated with light such as ultraviolet rays or x-rays, and the light emitted from the light source device 200 may be ultraviolet laser light.
The laser emitted by the light source device 200 is irradiated on at least a partial region of the fluorescent coating of the display assembly 100, so that at least a partial region of the display assembly 100 can emit visible light; the region of the display module 100 emitting visible light is a light-emitting region, and the visible light emitted by the light-emitting region of the display module 100 can form an image.
In the case where the display device is applied to a head-up display of an automobile, the light source device 200 may be disposed in front of or below an instrument panel of the automobile, and the display module 100 may be a front windshield of the automobile.
As shown in fig. 1, the solid line light emitted from the light source device 200 in fig. 1 may be an ultraviolet laser, and the dotted line light emitted from the display module 100 in fig. 1 may be a visible light. It is understood that the ultraviolet laser light emitted from the light source device 200 is transmitted in one direction; the visible light emitted from the display module 100 is transmitted in all directions, as in a conventional light source.
When a certain area on the display module 100 is irradiated by the laser emitted from the light source device 200, a phenomenon of photoluminescence (photoluminescence refers to a phenomenon that an object is irradiated by an external light source to obtain energy and excited to emit light) occurs, that is, visible light is emitted; the visible light may form an image on the display assembly 100.
The region of the display module 100 emitting visible light is a light-emitting region, that is, the region of the display module 100 irradiated with the laser light emitted from the light source device 200 is a light-emitting region, and the region of the display module 100 not irradiated with the laser light emitted from the light source device 200 is a non-light-emitting region. An image may be presented on the light-emitting area of the display assembly 100, and the non-light-emitting area of the display assembly 100 remains transparent.
Moreover, the display device provided by the embodiment of the application is different from the display device in the related art in imaging principle.
The imaging principle of the related art is that light rays are diffused after being reflected by a transparent screen, and a virtual image is formed at the intersection of the reverse extension lines of the light rays, wherein the size of the virtual image is substantially the same as the size of an image in the projection device. Moreover, if the performance such as curvature or accuracy of the transparent screen does not meet certain requirements, distortion of the image viewed by the user may result.
In the embodiment of the present application, an image is directly formed on the display assembly 100 by emitting visible light in the light emitting region of the fluorescent coating layer, and the formed image is not affected by the curvature and accuracy of the display assembly 100. Therefore, the display device provided by the embodiment of the application has lower performance requirements on the display assembly 100, and further can save cost.
In the embodiment of the application, the direction of the laser emitted by the light source device can be adjusted by the direction adjuster, so that the laser is emitted into the fluorescent coating of the display component, and then the area, irradiated by the light from the light source device, on the fluorescent coating is a light-emitting area, which can present an image, and the presented image is not affected by the curvature and the precision of the display component. Therefore, compared with a windshield head-up display (W-HUD), the display device provided in the embodiment of the present application has a lower performance requirement on the display element, and thus can save cost, and meanwhile, compared with a combined head-up display (C-HUD), the display device cannot be damaged by a secondary collision.
Also, as long as the light emitted from the light source device 200 can sequentially irradiate the entire area on the display module 100, an image can be formed in the entire area of the display module 100.
In one embodiment, the light source device 200 may be a laser, and the light emitted by the laser is ultraviolet laser; the emission time and/or wavelength of the ultraviolet laser light emitted by the laser is controlled by the controller 300.
It is to be understood that the emission time may be a time point at which the light source device 200 emits the ultraviolet laser light, and the controller 300 may control the light source device 200 to emit the ultraviolet laser light of a certain wavelength at a certain time point. The fluorescent coatings of the display assembly 100 may emit different colors of visible light when illuminated by different wavelengths of ultraviolet laser light.
In this way, the controller 300 can control the laser to emit ultraviolet laser light of different colors, so that the fluorescent coating of the display module 100 emits visible light of different colors, and the light-emitting area of the fluorescent coating forms a color image.
Optionally, the fluorescent coating comprises a single fluorescent coating which emits visible light of different colors under irradiation of laser light of different wavelengths;
or the fluorescent coating comprises a composite fluorescent coating which emits visible light with different colors under the irradiation of laser with different wavelengths.
The single fluorescent coating is a fluorescent coating composed of one fluorescent material, the composite fluorescent coating is a fluorescent coating composed of at least two fluorescent materials, and the light with different wavelengths can be ultraviolet laser with different wavelengths.
It can be understood that the color of the visible light emitted by the composite fluorescent coating after being irradiated by the ultraviolet laser with different wavelengths can be richer.
Thus, the cost can be saved by adopting the single fluorescent coating as the fluorescent coating; the composite fluorescent coating is used as the fluorescent coating, so that the color of visible light emitted by the fluorescent coating is richer.
In one embodiment, a display device includes a display assembly, a laser, a controller, and an auxiliary display assembly.
Fig. 2 is a schematic structural diagram of an assembly including a display module and an auxiliary display module according to an embodiment of the present disclosure.
As shown in fig. 2, the auxiliary display unit 400 is stacked on the display unit 100.
It is understood that the auxiliary display assembly 400 may be a front windshield of a conventional automobile, a window glass of a home, or the like. The auxiliary display assembly 400 may provide a mounting base for the display assembly 100, and the auxiliary display assembly 400 is stacked with the display assembly 100.
Fig. 3 is a schematic structural diagram of a display module according to an embodiment of the present disclosure.
As shown in fig. 3, the display assembly 100 includes a fluorescent coating 110 and a protective layer 120, and the protective layer 120 is stacked on the fluorescent coating 110.
The fluorescent coating 110 is attached on the surface of the auxiliary display assembly 400.
The protective layer 120 is used to protect the fluorescent coating 121, and the protective layer 120 may be a quartz protective film that is transparent to ultraviolet light.
Thus, the auxiliary display assembly 400 can provide a mounting base for the display assembly 100, and the protective layer 120 can protect the fluorescent coating 110, so that the display assembly 100 is more robust and the fluorescent coating 110 is less prone to damage.
Fig. 4 is a schematic structural diagram of an auxiliary display assembly according to an embodiment of the present disclosure.
As shown in FIG. 4, in one embodiment, the auxiliary display assembly 400 includes an outer glass sheet 410, an adhesive layer 420, and an inner glass sheet 430 that are arranged in a stack.
Fig. 5 is a schematic structural diagram of another display module and an auxiliary display module according to an embodiment of the present disclosure.
As shown in fig. 5, the fluorescent coating 110 is attached to the glass inner sheet 430 of the auxiliary display assembly 400.
The outer glass sheet 410 may be the same type as the inner glass sheet 430 or may be different from the inner glass sheet 430. The thickness of the outer glass sheet 410 may be the same as the thickness of the inner glass sheet 430 or may be different from the thickness of the inner glass sheet. For example, the glass outer sheet 410 may be different in type and thickness according to different application scenarios; the glass inner sheet 430 may be different in kind and thickness.
For example, in the case where the display apparatus is applied to an automobile, and the display assembly 100 is a front windshield of the automobile, the glass outer sheet 410 and the glass inner sheet 430 of the display assembly 100 may be both colorless transparent sheets; under the condition that the display device is applied to a glass door window, namely, the display assembly 100 is door window glass, the outer glass sheet 410 of the display assembly 100 can be a colored transparent sheet, and the inner glass sheet 430 can be a colorless transparent sheet. The glass inner sheet 430 may be a glass of a front windshield facing a driver and a passenger inside the vehicle, and the glass outer sheet 410 may be a glass of a front windshield facing a road outside the vehicle.
The adhesive layer 420 may be a transparent material having an adhesive effect, such as: PVB (polyvinyl butyral), EVA (Polyethylene vinyl acetate), and the like.
It is understood that the glass outer sheet 410, the adhesive layer 420, the glass inner sheet 430, the fluorescent coating 121, and the protective layer 120 are disposed in a stacked manner, and the display assembly 100 may have the same size as the glass outer sheet 410, the adhesive layer 420, the glass inner sheet 430, the fluorescent coating 121, and the protective layer 120.
It should be noted that the laser is actually a directional photon beam, and therefore, in the case where the light source device 200 is a laser and the light emitted by the laser is an ultraviolet laser, the range that the ultraviolet laser emitted by the light source device 200 can irradiate is limited, and only one position point (a region with a small area) on the fluorescent coating of the display module 100 can be irradiated. Thus, if one wants to make the area illuminated on the display assembly 100 larger, one can present a larger size and more complete image; it is necessary to make a plurality of lasers simultaneously emit a plurality of ultraviolet laser beams to simultaneously irradiate each position point on the fluorescent coating of the display module 100, or to make one laser sequentially emit a plurality of ultraviolet laser beams to sequentially irradiate each position point on the fluorescent coating of the display module 100 within a short time.
It can be understood that, as long as the ultraviolet laser sequentially irradiates each position point on the fluorescent coating of the display assembly 100 within a very short time, that is, each position point on the fluorescent coating of the display assembly 100 sequentially emits visible light within a very short time, the user can see a complete image composed of each position point emitting light due to a visual retention phenomenon (Persistence of vision), which means a phenomenon in which an image stays in the brain for a certain period of time after the image seen by the human eye disappears.
In view of cost, it is costly to use multiple lasers to simultaneously emit multiple uv lasers, while it is less costly to use one laser to sequentially emit multiple uv lasers. Therefore, the method that one laser emits a plurality of ultraviolet laser beams in sequence is mainly adopted in the embodiment of the application to emit the ultraviolet laser beams.
Therefore, in one embodiment, the image presented by the light-emitting region is formed by being triggered by a plurality of ultraviolet laser beams emitted by the laser sequentially in time, and the emission time interval between any two ultraviolet laser beams of the plurality of ultraviolet laser beams is controlled by the controller.
Thus, the multiple ultraviolet lasers emitted by the laser sequentially in time can make the irradiated area on the display assembly 100 larger, and thus can present a larger and more complete image.
Since the laser light generally travels in one direction, the laser is stationary; therefore, if the ultraviolet laser sequentially emitted by the laser can sequentially irradiate each position point on the fluorescent coating of the display module 100, the direction of the ultraviolet laser needs to be continuously adjusted while the laser sequentially emits the ultraviolet laser. Therefore, the light source device 100 provided by the embodiment of the present application may further include a direction adjuster.
Fig. 6 is a schematic structural diagram of a direction regulator according to an embodiment of the present disclosure.
As shown in fig. 6, the direction regulator 500 includes a horizontal wheel 510 and a vertical wheel 520,
the horizontal wheel 510 is used for deflecting the laser light from the light source device 200 in the horizontal direction, and the vertical wheel 520 is used for deflecting the laser light from the light source device 200 in the vertical direction.
In this way, the ultraviolet laser emitted from the laser can be deflected in the horizontal direction and the vertical direction by the horizontal rotating wheel 510 and the vertical rotating wheel 520.
In one embodiment, the horizontal wheel 510 and the vertical wheel 520 may be both in the form of a prism, and both the horizontal wheel 510 and the vertical wheel 520 may include a plurality of sides; a plurality of sides of the horizontal turning wheel 510 are all total reflection mirrors, and the horizontal turning wheel 510 can rotate around the central axis of the horizontal turning wheel 510 to deflect the light from the light source device 200 in the horizontal direction; the vertical wheel 520 has a plurality of side surfaces each being a total reflection mirror, and the vertical wheel 520 is rotatable around a central axis of the vertical wheel 520 to vertically deflect the light from the light source device 200.
In practical applications, the horizontal rotating wheel 510 is disposed perpendicular to the vertical rotating wheel 520.
For example, the horizontal rotating wheel 510 may be a quadrangular prism, or may also be a prism such as a pentagonal prism or a hexagonal prism; the vertical turning wheel 520 may be a quadrangular prism, or a prism such as a pentagonal prism or a hexagonal prism. The horizontal wheel 510 may have the same structure as the vertical wheel 520 or may have a different structure from the vertical wheel 520. For example, the horizontal turning wheel 510 and the vertical turning wheel 520 may be prisms such as a quadrangular prism, a pentagonal prism, or a hexagonal prism; the horizontal rotating wheel 510 may be a quadrangular prism, and the vertical rotating wheel 520 may be a pentagonal prism.
It is understood that when the horizontal rotary wheel 510 is rotated by a certain angle about the central axis of the horizontal rotary wheel 510 on the basis of an initial angle, the laser light emitted from the light source device 200 is deflected by a certain distance in the horizontal direction on the basis of an initial position on the fluorescent coating of the display assembly 100.
When the vertical wheel 520 is rotated by a certain angle about the central axis of the vertical wheel 520 based on an initial angle, the laser light emitted from the light source device 200 is deflected by a certain distance in the vertical direction based on the initial position on the fluorescent coating layer of the display assembly 100.
Both the horizontal jog dial 510 and the vertical jog dial 520 may be connected to the controller 300, and the controller 300 may control the frequency at which the horizontal jog dial 510 and the vertical jog dial 520 rotate.
Thus, a plurality of side surfaces of the horizontal rotating wheel 510 are all total reflection mirrors, and a plurality of side surfaces of the vertical rotating wheel 520 are all total reflection mirrors; the ultraviolet laser light may be totally reflected at the side of the horizontal wheel 510 or the side of the vertical wheel 520.
It can be understood that, when the horizontal wheel 510 rotates or the vertical wheel 520 rotates, the incident angle of the laser light emitted by the light source device 200 reflected on one side surface of the horizontal wheel 510 or one side surface of the vertical wheel 520 also changes, so that the direction of the reflected laser light can be changed, and the laser light emitted by the light source device 200 can irradiate on different positions of the illuminable assembly.
Fig. 7 is a schematic structural diagram of another display device provided in an embodiment of the present application.
Fig. 8 is a schematic structural diagram of another display device provided in an embodiment of the present application.
As shown in fig. 7-8, the ultraviolet laser emitted by the laser may be reflected by one side of the horizontal rotating wheel 510 to one side of the vertical rotating wheel 520, and then reflected by one side of the vertical rotating wheel 520 to the fluorescent coating of the display assembly 100; or may be reflected from one side of the vertical rotating wheel 520 to one side of the horizontal rotating wheel 510, and then reflected from one side of the horizontal rotating wheel 510 to the fluorescent coating of the display module 100.
The laser device is spaced from the horizontal rotating wheel 510 by a first preset distance, the laser device is spaced from the vertical rotating wheel 520 by a second preset distance, and the horizontal rotating wheel 510 is spaced from the vertical rotating wheel 520 by a third preset distance. The first preset distance and the second preset distance may be equal or unequal; the second preset distance and the third preset distance may be equal or unequal; the first preset distance and the third preset distance may be equal or unequal; the first preset distance, the second preset distance and the third preset distance may be equal or unequal.
In another embodiment, the laser includes a light emitting surface, and an included angle between the light emitting surface of the laser and a side surface of the horizontal wheel 510 or a side surface of the vertical wheel 520 is an acute angle or an obtuse angle; so that the ultraviolet light beam emitted by the laser is reflected to one side of the vertical rotating wheel 520 at one side of the horizontal rotating wheel 510, or so that the ultraviolet laser light emitted by the laser is reflected to one side of the horizontal rotating wheel 510 at one side of the vertical rotating wheel 520.
It is understood that the laser emits uv laser light that exits from the light exit surface, and the laser emits uv laser light that is perpendicular to the light exit surface of the laser. Therefore, if it is required to ensure that the ultraviolet laser emitted by the laser can be emitted to and reflected by one side surface of the horizontal rotating wheel 510 or one side surface of the vertical rotating wheel 520, it is required to ensure that a surface angle between the light emitting surface of the laser and one side surface of the horizontal rotating wheel 510 or one side surface of the vertical rotating wheel 520 is an acute angle or an obtuse angle.
It is understood that the phosphor coating of the display assembly 100 may include a plurality of location points thereon, and the location points on the light emitting area of the phosphor coating of the display assembly 100 may be light emitting location points; the ultraviolet laser emitted by the laser irradiates a target light-emitting position point on a light-emitting area of a fluorescent coating of the display assembly 100 at a target time point; the direction regulator 500 adjusts the direction of the ultraviolet laser to enable the ultraviolet laser to sequentially irradiate each light-emitting position point on the light-emitting area of the fluorescent coating of the display assembly 100, so that each light-emitting position point on the light-emitting area of the fluorescent coating of the display assembly 100 sequentially emits visible light.
The laser device may emit ultraviolet laser light with different wavelengths, and the ultraviolet laser light with different wavelengths is sequentially reflected to each light-emitting position point on the light-emitting area of the fluorescent coating of the display module 100 through the direction regulator 500, so that the light-emitting position points on the light-emitting area of the fluorescent coating of the display module 100 sequentially emit visible light with different colors.
Specifically, the controller 300 is connected to the light source device 20, and also connected to the horizontal wheel 510 and the vertical wheel 520 of the direction regulator 500.
The controller 300 controls the light source device 200 to emit the ultraviolet laser light of a target wavelength at a target time point, and also controls the rotation speed of the horizontal wheel 510 and the rotation speed of the vertical wheel 520 in the direction regulator 500.
It is understood that, in the case where the display assembly 100 is a front windshield of an automobile, the display assembly 100 has an arc shape, and the fluorescent coating of the display assembly 100 also has an arc shape. Accordingly, a spatial rectangular coordinate system may be constructed from the fluorescent coating of the display assembly 100, and each position point on the fluorescent coating of the display assembly 100 may be each coordinate point in the spatial rectangular coordinate system.
Assuming that the coordinates of any position point on the phosphor coating of the display assembly 100 are (X, Y, Z), the rotation speed of the horizontal rotating wheel 510 is v, and the phase is m; the vertical wheel 520 has a rotational speed u and a phase n. Then f (X, Y, Z) ═ f (v, m, u, n). If the position point with the coordinates of (X, Y, Z) emits visible light, the laser only needs to emit a beam of ultraviolet laser at the corresponding time point T.
The wavelength of the ultraviolet laser light corresponds to the color of visible light emitted from a position point irradiated with the ultraviolet laser light. Therefore, if a target light-emitting position point on the fluorescent coating of the display module 100 is to emit visible light of a specified color, it is only necessary to control the laser to emit ultraviolet laser light of a wavelength corresponding to the specified color at a target time point corresponding to the target light-emitting position point.
It should be noted that the laser does not emit the ultraviolet laser at the time point corresponding to the non-light-emitting position on the fluorescent coating of the display module 100.
After the controller acquires the target image to be displayed (the target image may be acquired from a network), the corresponding position point and the color of the position point of the target image on the fluorescent coating of the display assembly 100 may be determined, and the laser 120 is controlled to emit the ultraviolet laser with the target wavelength at the target time point.
The laser 120 may scan all location points on the phosphor coating of the display assembly 100 when emitting ultraviolet laser light. It should be noted that the scanning does not indicate that the ultraviolet laser is emitted at a time point corresponding to a certain position point, and the scanning includes emitting the ultraviolet laser at a time point corresponding to a light-emitting position point and not emitting the ultraviolet laser at a time point corresponding to a non-light-emitting position point.
The position points on the fluorescent coating of the display assembly 100 are divided into a plurality of rows and a plurality of columns at fixed intervals, by controlling the rotation speed of the horizontal rotating wheel 510 and the vertical rotating wheel 520, when the horizontal rotating wheel 510 rotates to one side, the ultraviolet laser scans one row of position points on the fluorescent coating of the display assembly 100, and when the vertical rotating wheel 520 rotates to one side, the ultraviolet laser scans all the position points on the fluorescent coating of the display assembly 100, namely, one frame of image is displayed.
It will be appreciated that although the phosphor coating of the display assembly 100 is described as being arcuate, the view of the phosphor coating of the display assembly 100 as viewed by a user is a plan view. Therefore, in the embodiment of the present application, the fluorescent coating of the display module 100 is rectangular. It should be understood that the phosphor coating of the display assembly 100 may have other shapes.
Assuming that there are y position points per row and z position points per column on the phosphor coating of the display assembly 100, the time taken for the laser to scan a row of position points of the phosphor coating of the display assembly 100 is t, and the horizontal wheel 510 and the vertical wheel 520 are both hexagonal;
then, the display module 100 displays one frame of image for a time tz, the number of frames per second for displaying the image is 1/(tz), the frequency of the ultraviolet laser emission is 1/(t/y), the frequency of the horizontal wheel rotation is 1/(6t), and the frequency of the vertical wheel rotation is 1/(6 tz).
For example, when y is 100, t is 0.0001S, and z is 50, then
The time tz of one frame of image displayed by the display component 100 is 0.005 s;
the number of the display image frames per second is 200 frames;
the frequency of ultraviolet laser emission is 1/(t/y) 1000000 HZ;
the frequency of the rotation of the horizontal rotating wheel is 1/(6t) and is approximately equal to 1667 HZ;
the frequency of the vertical wheel rotation is 1/(6tz) ≈ 33 HZ.
In fact, most of the area of the phosphor coating of the display assembly 100 is non-luminescent, when the laser is actually in a continuous quiescent state; for a small part of light emitting areas, the laser continuously emits ultraviolet laser for most of time, and the condition that the ultraviolet laser is really required to be emitted discretely point by point is not so many, so the requirement on the laser is greatly reduced.
An embodiment of the present application further provides a control method for a display device, and fig. 9 is a flowchart of the control method for a display device provided in the embodiment of the present application. The method shown in fig. 9 may be performed by a controller in the display device. The control method provided by the embodiment of the application can be applied to the display device provided by any embodiment of the application.
As shown in fig. 9, the method of controlling the display apparatus may include the steps of:
And 920, generating a target control signal according to the target image.
The target image is an image to be displayed, the target image may be stored in the controller, and the target image may include driving information of the vehicle, such as vehicle speed information and navigation information, and may also include other images. The target image can be obtained from a controller or from a network.
After receiving the control signal, the light source device may emit laser light at a target time point to irradiate on a light emitting area of the display component, and present a target image on the light emitting area of the display component.
In the embodiment of the application, the method for controlling the display device may acquire a target image, generate a target control signal according to the target image, and then send the target control signal to the light source device, and control the light source device to emit light to irradiate on the fluorescent coating of the display assembly at a target time point, where an area irradiated by the laser from the light source device is a light emitting area, and the light emitting area presents an image. Because the image formed by the visible light emitted by the fluorescent coating (i.e., the image presented by the light-emitting area of the fluorescent coating) is not affected by the curvature and accuracy of the display assembly. Therefore, the display device provided by the embodiment of the application has lower performance requirements on the display assembly, and further can save cost.
In one embodiment, the fluorescent coating of the display component comprises a plurality of position points, and the position points on the light-emitting area of the fluorescent coating of the display component are light-emitting position points; the light source device is a laser, the laser emits ultraviolet laser with different wavelengths, and the ultraviolet laser emitted by the laser irradiates a target light-emitting position point on a light-emitting area of a fluorescent coating of the display assembly at a target time point; the direction regulator enables the ultraviolet laser to sequentially irradiate each light-emitting position point on the light-emitting area of the fluorescent coating of the display assembly by adjusting the direction of the ultraviolet laser, so that each light-emitting position point on the light-emitting area of the fluorescent coating of the display assembly sequentially emits visible light.
In this embodiment, the step 1200, generating the target control signal according to the target image may include the steps of:
according to the target image, determining a target light-emitting position point corresponding to the target image and a color corresponding to the target light-emitting position point on a fluorescent coating of the display assembly;
generating a target control signal according to the target light-emitting position point and the color corresponding to the target light-emitting position point;
the target control signal is used for controlling the laser to emit ultraviolet laser with a target wavelength at a target time point; the target light-emitting position point corresponds to the target time point, and the color of the target light-emitting position point corresponds to the target wavelength.
The determining, according to the target image, a target light-emitting location point on a fluorescent coating of the display assembly corresponding to the target image may further include:
determining a target light emitting area corresponding to the target image on the fluorescent coating of the display assembly according to the target image;
and determining a light-emitting position point according to the target light-emitting area.
The embodiment of the application also provides a vehicle, and the vehicle comprises the display equipment.
It is to be understood that the method for controlling the display apparatus described above can be applied to the display apparatus provided in the embodiments of the present application.
In the embodiments of the present application, the difference between the embodiments is described in detail, and different optimization features between the embodiments can be combined to form a better embodiment as long as the differences are not contradictory, and further description is omitted here in view of brevity of the text.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.
Claims (10)
1. A display apparatus, comprising a display assembly, a light source device, a direction adjuster, and a controller; the controller is connected with the light source device and controls the light source device to emit laser, and the light source device provides laser for the display assembly;
wherein the display assembly comprises a fluorescent coating; the area of the fluorescent coating layer irradiated by the laser from the light source device is a light-emitting area, and the light-emitting area presents an image;
the direction regulator is used for regulating the direction of the laser emitted by the light source device;
the laser light from the light source device is emitted onto the fluorescent coating of the display assembly under the adjustment of the direction adjuster.
2. The display device according to claim 1, wherein the light source device includes a laser, and light emitted from the laser is ultraviolet laser light; the emission time and/or wavelength of the ultraviolet laser emitted by the laser is controlled by the controller.
3. The display device of claim 1, wherein the phosphor coating comprises a single phosphor coating that emits different colors of visible light under different wavelengths of laser light;
or the fluorescent coating comprises a composite fluorescent coating which emits visible light with different colors under the irradiation of laser with different wavelengths.
4. The display device according to any one of claims 1 to 3, further comprising an auxiliary display component, the auxiliary display component being disposed in a stack with the display component;
the display assembly further comprises a protective layer disposed in a stack with the fluorescent coating;
the fluorescent coating is attached on a surface of the auxiliary display assembly.
5. The display device of claim 4, wherein the auxiliary display assembly comprises an outer sheet of glass, an adhesive layer, and an inner sheet of glass in a stacked arrangement; the fluorescent coating is attached to the inner glass sheet of the auxiliary display assembly.
6. The display device according to claim 1, wherein the direction adjuster includes a horizontal wheel for deflecting the laser light from the light source device in a horizontal direction and a vertical wheel for deflecting the laser light from the light source device in a vertical direction.
7. The display device of claim 6, wherein the horizontal wheel and the vertical wheel are each prismatic in form, the horizontal wheel and the vertical wheel each comprising a plurality of sides; a plurality of side surfaces of the horizontal rotating wheel are all total reflection mirror surfaces, and the horizontal rotating wheel rotates around the central axis of the horizontal rotating wheel so as to deflect the laser from the light source device in the horizontal direction; and a plurality of side surfaces of the vertical rotating wheel are all total reflection mirror surfaces, and the vertical rotating wheel rotates around the central axis of the vertical rotating wheel so as to deflect the laser from the light source device in the vertical direction.
8. The display device according to claim 2, wherein the image presented by the light-emitting region is formed by being triggered by a plurality of ultraviolet laser lights emitted by the laser sequentially in time, and an emission time interval between any two of the plurality of ultraviolet laser lights is controlled by the controller.
9. A vehicle characterized by comprising a display device according to any one of claims 1-8.
10. A method of controlling a display device according to any one of claims 1 to 8, the method comprising:
acquiring a target image;
generating a target control signal according to the target image;
sending the target control signal to the light source device; wherein the target control signal is used for controlling the light source device to emit laser light at a target time point, so that the laser light is emitted onto the fluorescent coating of the display component under the adjustment of the direction adjuster.
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| CN202111248204.3A CN114200674A (en) | 2021-10-26 | 2021-10-26 | Display apparatus, vehicle, and control method |
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| WO2002058402A2 (en) * | 2001-01-16 | 2002-07-25 | Ppg Industries Ohio, Inc. | Head-up display system utilizing fluorescent material |
| US20090141496A1 (en) * | 2007-11-16 | 2009-06-04 | Kazuhisa Yamamoto | Image display apparatus |
| US20090316115A1 (en) * | 2008-03-28 | 2009-12-24 | Tatsuo Itoh | Image display apparatus and image display method |
| FR2997514A1 (en) * | 2012-10-31 | 2014-05-02 | Saint Gobain | METHOD FOR IMPLEMENTING A DEVICE FOR VISUALIZING A REAL IMAGE |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002058402A2 (en) * | 2001-01-16 | 2002-07-25 | Ppg Industries Ohio, Inc. | Head-up display system utilizing fluorescent material |
| US20090141496A1 (en) * | 2007-11-16 | 2009-06-04 | Kazuhisa Yamamoto | Image display apparatus |
| US20090316115A1 (en) * | 2008-03-28 | 2009-12-24 | Tatsuo Itoh | Image display apparatus and image display method |
| FR2997514A1 (en) * | 2012-10-31 | 2014-05-02 | Saint Gobain | METHOD FOR IMPLEMENTING A DEVICE FOR VISUALIZING A REAL IMAGE |
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