Display screen, projection light machine, head-up display device and vehicle

Abstract

The invention relates to a display screen, a projection light machine, a head-up display device and a vehicle. The display screen is used for receiving the third color light, the display screen comprises a substrate and a light conversion layer, the light conversion layer is arranged on the substrate, the light conversion layer comprises a plurality of pixel units arranged in an array, each pixel unit comprises a first sub-pixel, a second sub-pixel and a third sub-pixel, the first sub-pixel, the second sub-pixel and the third sub-pixel are jointly arranged in an array, and the first sub-pixel, the second sub-pixel and the third sub-pixel are arranged in the array. The first sub-pixels are arranged to be capable of being excited by the third color light to emit first color light, the second sub-pixels are arranged to be capable of being excited by the third color light to emit second color light, and the third sub-pixels are arranged to be capable of penetrating through the third color light. The display screen has the advantages of being good in display effect, good in durability, long in service life and the like.

Description

Technical Field

[0001] The present application relates to the technical field of head-up display, and in particular to a display screen, a projection optical machine, a head-up display device and a vehicle. Background Art

[0002] As the requirements for the head-up display system (AR-HUD, Augmented Reality Head Up Display) combined with augmented reality technology to resist ambient light gradually increase, it has higher and higher requirements for high color saturation, high light stability and high brightness. On this basis, it is an inevitable trend to use laser as a backlight source (LBS system) for projection imaging.

[0003] However, the head-up display system in the related art usually emits light through three primary colors and uses a micro-electromechanical system to control the light output angle and the projection field of view to achieve a color grayscale effect, and then projects the light source evenly onto the screen or glass to be displayed through a lens.

[0004] It is usually affected by the light source of the three primary colors. For example, the green laser light source is expensive, and if there is a color cast, it will also cause obvious deviation in color rendering chromaticity. The red laser light source has a short service life and poor product durability. A single blue laser light source requires scattering particles to achieve light reflection imaging effects, etc. It is difficult to have both stable display effects or better display effects, as well as better durability and better service life. Summary of the invention

[0005] Based on this, a display screen, a projection optical machine, a head-up display device and a vehicle are provided, which have the advantages of better display effect, better durability and better service life.

[0006] According to one aspect of the present application, a display screen is provided for receiving a third color light, the display screen comprising:

[0007] substrate; and

[0008] A light conversion layer is provided on the substrate, the light conversion layer includes a plurality of pixel units arranged in an array, the pixel units include a first sub-pixel, a second sub-pixel and a third sub-pixel, the first sub-pixel, the second sub-pixel and the third sub-pixel are arranged in an array together, the first sub-pixel is configured to be able to emit a first color light when excited by the third color light, the second sub-pixel is configured to be able to emit a second color light when excited by the third color light, and the third sub-pixel is configured to be able to transmit the third color light.

[0009] The above display screen can convert a single incident light into three different colors of light including the color of the incident light by setting a light conversion layer, without using three different light sources, and thus will not be affected by the light sources of the three primary colors themselves, such as the green laser light source having a color cast which will lead to obvious color deviation, the red laser light source having poor durability, and the blue laser light source having to use scattering particles to achieve light reflection imaging effects. Therefore, compared with the display screens in the related art, it has a more stable or better display effect, better durability and better service life.

[0010] In one embodiment, the materials of the first sub-pixel and the second sub-pixel both include quantum dots, the first sub-pixel includes a first quantum dot, the second sub-pixel includes a second quantum dot, and a characteristic size a of the first quantum dot satisfies 1nm≤a≤20nm, and a characteristic size b of the second quantum dot satisfies 1nm≤b≤20nm.

[0011] In one embodiment, titanium dioxide nanoparticles are mixed in the first sub-pixel and the second sub-pixel respectively, and the characteristic size c of the titanium dioxide nanoparticles satisfies: 50nm≤c≤200nm;

[0012] And the weight proportion x of the first quantum dots in the first sub-pixel satisfies: 1%≤x≤10%, the weight proportion y of the second quantum dots in the second sub-pixel satisfies: 1%≤y≤10%, the weight proportion z1 of the titanium dioxide nanoparticles in the first sub-pixel satisfies: 10%≤z1≤15%, and the weight proportion z2 of the titanium dioxide nanoparticles in the second sub-pixel satisfies: 10%≤z2≤15%.

[0013] In one embodiment, the first quantum dots include red quantum dots, the second quantum dots include green quantum dots, and the third color light is blue light.

[0014] In one embodiment, the materials of the first sub-pixel and the second sub-pixel both include fluorescent powder, the first sub-pixel includes red fluorescent powder, the second sub-pixel includes green fluorescent powder, and the third color light is blue light.

[0015] In one embodiment, the material of the third sub-pixel includes at least one inorganic material nanoparticle, and the characteristic size d of the inorganic material nanoparticle in the third sub-pixel satisfies: 100nm≤d≤500nm; and the at least one inorganic material nanoparticle in the third sub-pixel is titanium dioxide.

[0016] In one of the embodiments, a dimension H of the light conversion layer along a thickness direction of the light conversion layer pointing to the substrate satisfies: 1um≤H≤10um, a spacing L between two adjacent sub-pixels of the light conversion layer satisfies 3≤L≤30um, and a dimension N of the light conversion layer along a direction perpendicular to the thickness satisfies 1≤N≤10um.

[0017] According to another aspect of the present application, a projection light engine is provided, comprising the display screen described in any of the above embodiments, the projection light engine also comprising a light source, the light source being disposed on a side of the light conversion layer away from the substrate and configured to emit the third color light.

[0018] In one embodiment, the third color light includes blue light.

[0019] According to another aspect of the present application, a head-up display device is provided, comprising the above-mentioned projection optical machine.

[0020] According to yet another aspect of the present application, a vehicle is provided, comprising the above-mentioned head-up display device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of a partial side view structure of a display screen in one embodiment of the present application.

[0022] Figure 2 This is the absorption of light of different wavelengths by quantum dots in one embodiment of the present application.

[0023] Figure 3 This is a schematic structural diagram of a first sub-pixel, a second sub-pixel, and a third sub-pixel of a display screen in an embodiment of the present application, in which top views of the first sub-pixel, the second sub-pixel, and the third sub-pixel are all rectangular.

[0024] Figure 4 This is a schematic structural diagram of a first sub-pixel, a second sub-pixel, and a third sub-pixel of a display screen in an embodiment of the present application, wherein the top views are all circular.

[0025] Description of Figure Numbers:

[0026] 10. Display screen;

[0027] 11. Base;

[0028] 12. light conversion layer; 121. first sub-pixel; 122. second sub-pixel; 123. third sub-pixel; 124. first quantum dot; 125. titanium dioxide nanoparticles;

[0029] 20. Light source. DETAILED DESCRIPTION

[0030] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0031] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0032] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0033] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0034] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0035] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0036] In-vehicle projection in related technologies: The head-up display system (AR-HUD, AugmentedReality Head Up Display) combined with augmented reality technology usually uses projection technology to form three primary colors of light through devices such as beam splitters, prisms, filters and color wheels. Then, the micro-electromechanical system is used to control the light angle and projection field of view to achieve the color grayscale effect, and then the light source is evenly projected onto the screen or glass to be displayed through the lens. Such stable and controllable operation can be matched with a backlight with high light stability to achieve a full-color effect.

[0037] Or it can be understood that it works based on the principle of MEMS scanning mirror technology. MEMS scanning mirror technology uses red, blue and green light sources to be collimated and mixed into a single beam through a coating filter or prism, and then projected onto a reflective mirror made by the MEMS process. The mirror swings horizontally and vertically, reflecting and scanning the light beam into a two-dimensional image, and mixing the color required by individual pixels by simultaneously adjusting the intensity of red, blue and green light.

[0038] It is understandable that the projection technology in the related art usually adopts different backlight sources, such as xenon lamps, high-pressure mercury lamps, laser light sources and mixed laser white light modules, etc. It is then matched with technologies such as liquid crystal display (LCD), digital light processing (DLP), digital micromirror device (DMD) or micro electromechanical system (MEMS) to control the projection angle and achieve the effect of mixed light and full color through the visual persistence of the human eye.

[0039] As the requirements for AR-HUD to resist ambient light increase, it has higher and higher requirements for high color saturation, high light output stability and high brightness. On this basis, it is an inevitable trend to use laser as a backlight source (LBS system) for projection imaging. However, in this case, there will be great requirements for the light output stability of the laser light source and its color rendering effect on the projection display substrate. At the same time, there are also problems such as the high price of green laser light sources, and if there is color deviation, it will also cause obvious deviation in color rendering chromaticity, the short service life of red laser light sources, poor product durability, and the need to use scattering particles for a single blue laser light source to achieve light reflection imaging effects. That is, the head-up display system that uses laser as a light source in the related art is difficult to have the advantages of better display effect, better durability and better service life.

[0040] Based on this, the present application provides a display screen, a projection optical machine, a head-up display device and a vehicle, which have the advantages of better display effect, better durability and better service life.

[0041] See also Figure 1 As shown, Figure 1 The side view structure diagram of part of the display screen 10 in one embodiment of the present application. The display screen 10 of the present application is used to receive the third color light. The display screen 10 includes a substrate 11 and a light conversion layer 12. The light conversion layer 12 is arranged on the substrate 11. The light conversion layer 12 includes a plurality of pixel units arranged in an array. The pixel unit includes a first sub-pixel 121, a second sub-pixel 122 and a third sub-pixel 123. The first sub-pixel 121, the second sub-pixel 122 and the third sub-pixel 123 are arranged in an array together. The first sub-pixel 121 is configured to be able to emit the first color light when excited by the third color light, the second sub-pixel 122 is configured to be able to emit the second color light when excited by the third color light, and the third sub-pixel 123 is configured to be able to transmit the third color light. In this way, the corresponding sub-pixels are excited by the third color light to achieve full-color display.

[0042] The display screen 10 of the present application can convert a single incident light into three different colors of light including the color of the incident light by setting the light conversion layer 12, without using three different light sources, and thus will not be affected by the light sources of the three primary colors themselves, such as the green laser light source having a color deviation that will lead to obvious color deviation, the red laser light source having poor durability, and the blue laser light source having to use scattering particles to achieve light reflection imaging effects. Therefore, compared with the display screen 10 in the related art, it has a more stable or better display effect, better durability and better service life.

[0043] In some embodiments, the materials of the first sub-pixel 121 and the second sub-pixel 122 both include quantum dots, the first sub-pixel 121 includes a first quantum dot 124, and the second sub-pixel 122 includes a second quantum dot. And the characteristic size a of the first quantum dot 124 satisfies 1nm≤a≤20nm, and the characteristic size b of the second quantum dot satisfies 1nm≤b≤20nm. It can be understood that the luminescence half-peak width of the quantum dot material is relatively narrow, making the red and green colors of the quantum dot backlight purer, or in other words, the display screen 10 using quantum dots has a higher color gamut value. The use of quantum dots can provide high brightness and high contrast for the display screen 10, making the black deeper and the white brighter, thereby enhancing the depth and details of the displayed image. At the same time, the use of a single third color light incident light is conducive to energy saving and improving energy efficiency. That is, the display screen 10 using quantum dots also has the advantages of high brightness, high contrast, low energy consumption, and long life.

[0044] In some embodiments, Figure 1 As shown, titanium dioxide nanoparticles 125 are mixed in the first sub-pixel 121 and the second sub-pixel 122, respectively, and the characteristic size c of the titanium dioxide nanoparticles 125 satisfies: 50nm≤c≤200nm. And the weight proportion x of the first quantum dot 124 in the first sub-pixel 121 satisfies: 1%≤x≤10%, the weight proportion y of the second quantum dot in the second sub-pixel 122 satisfies: 1%≤y≤10%, the weight proportion z1 of the titanium dioxide nanoparticles 125 in the first sub-pixel 121 satisfies: 10%≤z1≤15%, and the weight proportion z2 of the titanium dioxide nanoparticles 125 in the second sub-pixel 122 satisfies: 10%≤z2≤15%. In this way, the reasonable proportion enables the titanium dioxide nanoparticles 125 to play a better auxiliary role and improve the photocatalytic activity. The titanium dioxide nanoparticles 125 in the quantum dots provide additional density states, which can further help improve the photon utilization rate, enhance the photon absorption at a specific wavelength, and help enhance light absorption.

[0045] In some embodiments, the first quantum dot 124 includes a red quantum dot, the second quantum dot includes a green quantum dot, and the third color light is blue light with a wavelength of 447nm-453nm. In this way, it can be understood that the third color light is incident on the third sub-pixel 123 and the emission is still the third color light, that is, blue light. The third color light is incident on the first sub-pixel 121, and the first sub-pixel 121 is excited by light to emit red light with a wavelength range of 600nm-650nm. The third color light is incident on the second sub-pixel 122, and the second sub-pixel 122 is excited by light to emit green light with a wavelength range of 500nm-550nm. Thus, the three primary colors can be emitted, and full-color display can be achieved by exciting the corresponding sub-pixels with the third color light.

[0046] In some embodiments, the material of the quantum dots can be cadmium selenide or zinc selenide, etc. Figure 2 , Figure 2 This is the absorption of different wavelengths of light by quantum dots in one embodiment of the present application. The ordinate represents the absorption value, and the abscissa represents the wavelength. It can be seen that quantum dots can absorb blue light of about 450nm to achieve the utilization of blue light.

[0047] In some embodiments, the materials of the first sub-pixel 121 and the second sub-pixel 122 both include phosphors, the first sub-pixel 121 includes red phosphors, the second sub-pixel 122 includes green phosphors, and the third color light is blue light. That is, the first sub-pixel 121 and the second sub-pixel 122 can also use phosphor materials to have better brightness and color saturation, wide color gamut coverage, and higher efficiency and stability.

[0048] In some embodiments, the material of the third sub-pixel 123 includes at least one inorganic material nanoparticle, and the characteristic size d of the inorganic material nanoparticle in the third sub-pixel 123 satisfies: 100nm≤d≤500nm; at least one inorganic material nanoparticle in the third sub-pixel 123 is titanium dioxide. In this way, the third sub-pixel 123 is made of white material, can transmit the third color light, or emit light of the same color as the third color light, so as to cooperate with the first sub-pixel 121 and the second sub-pixel 122 to achieve full-color display.

[0049] In some embodiments, Figure 1 , the dimension H of the light conversion layer 12 along the thickness direction of the light conversion layer 12 pointing to the substrate 11 satisfies: 1um≤H≤10um, the spacing L between two adjacent sub-pixels of the light conversion layer 12 satisfies 1≤L≤10um, and the dimension N of the light conversion layer along the direction perpendicular to the thickness satisfies 3≤N≤30um. In this way, there is a smaller spacing between two adjacent pixels, or in other words, the sub-pixels of the light conversion layer 12 have a smaller line width, and the display panel has a higher number of pixels per inch (PPI) and a better resolution.

[0050] In some embodiments, the base 11 of the display screen 10 has a reflective surface, and the light conversion layer 12 is disposed on the reflective surface. In this way, after the third color light enters the light conversion layer 12, the light passing through the conversion layer can be reflected back to the light conversion layer 12 under the reflection effect of the reflective surface, so that this part of the light can continue to be used, thereby helping to improve the utilization rate of the light.

[0051] In some embodiments, Figure 3 As shown, Figure 3 This is a schematic diagram of a structure in which the top view of the first sub-pixel 121, the second sub-pixel 122, and the third sub-pixel 123 of the display screen 10 in one embodiment of the present application are all rectangular. The first sub-pixel 121, the second sub-pixel 122, and the third sub-pixel 123 can all be cubic structures, and all the first sub-pixels 121, the second sub-pixels 122, and the third sub-pixels 123 of the light conversion layer 12 are arranged in an array, and along the direction perpendicular to the thickness of the light conversion layer 12, the first sub-pixels 121, the second sub-pixels 122, and the third sub-pixels 123 are alternately arranged in sequence.

[0052] In some embodiments, Figure 4 As shown, Figure 4 This is a schematic diagram of a structure in which the top view of the first sub-pixel 121, the second sub-pixel 122, and the third sub-pixel 123 of the display screen 10 in one embodiment of the present application are all circular. The first sub-pixel 121, the second sub-pixel 122, and the third sub-pixel 123 can all be cylindrical structures, and all the first sub-pixels 121, the second sub-pixels 122, and the third sub-pixels 123 of the light conversion layer 12 are arranged in an array, and along the direction perpendicular to the thickness of the light conversion layer 12, the first sub-pixel 121, the second sub-pixel 122, and the third sub-pixel 123 are alternately arranged in sequence. The spacing between two adjacent sub-pixels can be 7 microns, and the sub-pixel top view is a circle with a diameter of 5 microns.

[0053] In some embodiments, the substrate 11 includes a film layer or a lens substrate structure, and may also be other structures suitable for coating and free of foreign matter on the surface. The corresponding material may be graphically arranged on the film layer or the lens substrate by yellow light processing or lamination to form the display screen 10.

[0054] The present application also provides a projection optical machine, including the display screen 10 of any of the above embodiments, and the projection optical machine also includes a light source 20, which is arranged on the side of the light conversion layer 12 away from the substrate 11 and is used to emit a third color light, the third color light includes blue light, and the wavelength range is 447nm-453nm. Thus, different color lights, such as red light, green light and blue light, are emitted by means of the first sub-pixel 121, the second sub-pixel 122 and the third sub-pixel 123 of the light conversion layer 12. The light conversion layer 12 is scanned by the third color light to excite the corresponding sub-pixel to achieve full-color display, and the scanning speed is 60-200 Hz.

[0055] The present application also provides a head-up display device, including the above-mentioned projection optical machine and reflector, etc. The projection optical machine is used to emit light with a corresponding display pattern, and the light is emitted to an imaging surface through the reflector, etc. to form an image, thereby realizing display.

[0056] The present application also provides a vehicle, characterized in that it includes the above-mentioned head-up display device and windshield, and the light emitted by the head-up display device is projected onto the windshield to form an image for the driver to view.

[0057] The display screen 10, projection light machine, head-up display device and vehicle provided by the present application convert a single incident light into three different colors of light including the color of the incident light through the light conversion layer 12, without the need to use three different light sources, and thus will not be affected by the light sources of the three primary colors themselves, such as the green laser light source having a color deviation that will lead to a significant deviation in color rendering, the red laser light source having poor durability, and the blue laser light source having to use scattering particles to achieve the light reflection imaging effect. Therefore, compared with the display screen 10 in the related art, it has a more stable or better display effect, better durability and better service life.

[0058] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0059] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A display screen, characterized in that: For receiving a third color light, the display screen comprises: substrate; and A light conversion layer is provided on the substrate, the light conversion layer includes a plurality of pixel units arranged in an array, the pixel units include a first sub-pixel, a second sub-pixel and a third sub-pixel, the first sub-pixel, the second sub-pixel and the third sub-pixel are arranged in an array together, the first sub-pixel is configured to be able to emit a first color light when excited by the third color light, the second sub-pixel is configured to be able to emit a second color light when excited by the third color light, and the third sub-pixel is configured to be able to transmit the third color light.

2. The display screen according to claim 1, characterized in that: The materials of the first sub-pixel and the second sub-pixel both include quantum dots, the first sub-pixel includes a first quantum dot, the second sub-pixel includes a second quantum dot, and a characteristic size a of the first quantum dot satisfies 1nm≤a≤20nm, and a characteristic size b of the second quantum dot satisfies 1nm≤b≤20nm.

3. The display screen according to claim 2, characterized in that: Titanium dioxide nanoparticles are mixed in the first sub-pixel and the second sub-pixel respectively, and the characteristic size c of the titanium dioxide nanoparticles satisfies: 50nm≤c≤200nm; And the weight proportion x of the first quantum dots in the first sub-pixel satisfies: 1%≤x≤10%, the weight proportion y of the second quantum dots in the second sub-pixel satisfies: 1%≤y≤10%, the weight proportion z1 of the titanium dioxide nanoparticles in the first sub-pixel satisfies: 10%≤z1≤15%, and the weight proportion z2 of the titanium dioxide nanoparticles in the second sub-pixel satisfies: 10%≤z2≤15%.

4. The display screen according to claim 2, characterized in that: The first quantum dots include red quantum dots, the second quantum dots include green quantum dots, and the third color light is blue light.

5. The display screen according to claim 1, characterized in that: The materials of the first sub-pixel and the second sub-pixel both include fluorescent powder, the first sub-pixel includes red fluorescent powder, the second sub-pixel includes green fluorescent powder, and the third color light is blue light.

6. The display screen according to any one of claims 2 to 5, characterized in that: The material of the third sub-pixel includes at least one inorganic material nanoparticle, and the characteristic size d of the inorganic material nanoparticle in the third sub-pixel satisfies: 100nm≤d≤500nm; the at least one inorganic material nanoparticle in the third sub-pixel is titanium dioxide.

7. The display screen according to claim 1, characterized in that: The dimension H of the light conversion layer along the thickness direction of the light conversion layer pointing to the substrate satisfies: 1um≤H≤10um, the spacing L between two adjacent sub-pixels of the light conversion layer satisfies 1≤L≤10um, and the dimension N of the light conversion layer along the direction perpendicular to the thickness satisfies 3≤N≤30um.

8. A projection optical machine, characterized in that: Including the display screen as described in any one of claims 1 to 7, the projection light machine also includes a light source, which is arranged on a side of the light conversion layer away from the substrate and is used to emit the third color light.

9. The projection optical machine according to claim 8, characterized in that: The third color light includes blue light.

10. A head-up display device, characterized in that: Comprising the projection light machine as described in claim 8.

11. A vehicle, characterized in that: It comprises the head-up display device as claimed in claim 10.

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