CN114879406A - Display panel, head-up display and vehicle - Google Patents

Abstract

The utility model relates to a display panel, new line display and vehicle, display panel includes backlight unit, liquid crystal display module and quantum dot rete, backlight unit has the light-emitting side, the range upon range of light-emitting side of locating backlight unit of liquid crystal display module, liquid crystal display module is equipped with the photic zone that is used for receiving the light that backlight unit sent, the quantum dot rete is located between liquid crystal display module and the backlight unit, and the orthographic projection of quantum dot rete on the plane of the light-emitting direction of perpendicular to backlight unit overlaps with the orthographic projection of photic zone on the plane of the light-emitting direction of perpendicular to backlight unit. The display panel can solve the problems that the saturation of a display picture of a head-up display system is low, so that a driver is difficult to quickly and accurately identify required display information, and the driving safety is influenced.

Description

Display panel, head-up display and vehicle

Technical Field

The application relates to the technical field of display, in particular to a display panel, a head-up display and a vehicle.

Background

The head-up display system can display information such as speed per hour, navigation and the like required in the driving process on a windshield of a vehicle, so that a driver can acquire the required information under the condition that the sight line of the driver does not leave the windshield, and the driving safety is maintained.

Because the display picture of the head-up display system and the environment outside the windshield can simultaneously enter the visual field of the driver through the windshield, the saturation of the display picture is low in the existing head-up display system, so that the driver is difficult to quickly and accurately identify the required display information, and the driving safety is influenced.

Disclosure of Invention

Accordingly, it is necessary to provide a display panel, a head-up display and a vehicle for solving the problem that the saturation of the display screen of the head-up display system is low, so that a driver cannot quickly and accurately identify required display information and driving safety is affected.

According to an aspect of the present application, there is provided a display panel including: the backlight module is provided with a light emitting side; the liquid crystal display module is arranged on the light emitting side of the backlight module in a laminated manner and is provided with a light receiving area for receiving light emitted by the backlight module; the quantum dot film layer is arranged between the liquid crystal display module and the backlight module; the orthographic projection of the quantum dot film layer on a plane perpendicular to the light emergent direction of the backlight module is overlapped with the orthographic projection of the light receiving area on a plane perpendicular to the light emergent direction of the backlight module.

The display panel that this application embodiment provided, through set up the quantum dot rete between backlight unit and liquid crystal display module, make the light that backlight unit sent before getting into the liquid crystal display module, can pass through the quantum dot rete earlier, thereby make the picture saturation that display panel shows higher, based on this, when this display panel is applied to new line display system, the picture that display panel shows can distinguish with the environment better, be convenient for the driver accurately to discern required display information fast, promote the security.

In some embodiments, the backlight module comprises a light source and a total reflection lens, and the total reflection lens is located between the light source and the liquid crystal display module. A total reflection lens is also called a total internal reflection lens, and according to the principle of total internal reflection, when a light ray enters a medium with a lower refractive index from a medium with a higher refractive index, if an incident angle is larger than a certain critical angle, the refracted light ray will disappear, and all incident light rays will be reflected without entering the medium with a lower refractive index. The light emitted by the light source is transmitted to the liquid crystal display module through the total reflection head lens, so that the utilization rate of the light emitted by the light source can be improved.

In some embodiments, the backlight module comprises a light source and a reflective cup, wherein the light source is arranged in the reflective cup. Utilize the reflection cup to transmit the light that the light source sent to the liquid crystal display module assembly, can promote illumination distance and illumination area under the limited condition of light energy, promote the light energy utilization ratio.

In some embodiments, the backlight module comprises a light source and a condensing lens, and the condensing lens is positioned between the light source and the liquid crystal display module. The light is condensed by the condensing lens, so that the liquid crystal display module can better utilize the light emitted by the light source.

In some embodiments, the light source has a light emitting surface, and the quantum dot film layer is attached to the light emitting surface of the light source. The quantum dot film layer is attached to the light emitting surface of the light source, so that light emitted by the light source needs to pass through the quantum dot film layer before entering other structures, the light emitted by the light source is optimized by the quantum dot film layer, uniform and high-purity white light is generated, and an image with high color saturation is obtained.

In some embodiments, the quantum dot film layer is attached to a surface of the condenser lens facing away from the light source. The quantum dot film layer is attached to the surface of one side, back to the light source, of the condensing lens, so that light emitted by the light source needs to pass through the quantum dot film layer firstly after passing through the condensing lens and before entering the liquid crystal display module, the quantum dot film layer is utilized to optimize the light entering the liquid crystal display module, uniform and high-purity white light is generated, and an image with high color saturation is obtained.

In some embodiments, the light source comprises a blue light emitting diode. The blue light emitting diode is used as a light source, the quantum dots of the quantum dot film layer are subjected to blue light energy laser to generate RGB narrow-band spectrum with fixed wavelength, and the RGB narrow-band spectrum light mixing layer becomes high-purity white light, so that the color saturation of the image generation unit is improved.

In some embodiments, the quantum dot film layer includes a quantum dot layer and two protective layers respectively disposed on two opposite sides of the quantum dot layer. By providing the protective layers on the opposite sides of the quantum dot layer, the quantum dot layer is protected, and the quantum dot layer can function stably.

In some embodiments, the protective layer comprises a water-resistant film. Water blocking films are arranged on two opposite sides of the quantum dot layer to prevent the quantum dot layer from being permeated by water vapor.

In some embodiments, the protective layer has a thickness of 25 μm to 200 μm. It is understood that the protective layer has relatively better protective effect when the thickness of the protective layer is larger, and the thickness of the display panel is too large when the thickness of the protective layer is too large. In the display panel provided by the embodiment of the application, the thickness of the protective layer is 25 μm to 200 μm, so that the thickness of the display panel is ensured to be smaller while the protective layer has a good protection effect.

According to another aspect of the present application, a head up display is provided, which includes the display panel as described above.

According to yet another aspect of the present application, there is provided a vehicle comprising a heads-up display as described above.

Drawings

Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present application;

FIG. 2 is a schematic structural diagram of a display panel according to another embodiment of the present application;

FIG. 3 is a schematic structural diagram of a display panel according to another embodiment of the present application;

FIG. 4 is a schematic structural diagram of a display panel according to another embodiment of the present application;

fig. 5 is a schematic structural diagram of a quantum dot film layer in an embodiment of the present application.

The reference numbers illustrate:

100: the backlight module 140: diffusion sheet

110: light source 200: liquid crystal display module

111: the total reflection lens 300: quantum dot film layer

120: light source 310: quantum dot layer

121: the reflection cup 320: protective layer

130: condensing lens

Detailed Description

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is capable of embodiments in many different forms than those described herein and that modifications may be made by one skilled in the art without departing from the spirit and scope of the application and it is therefore not intended to be limited to the specific embodiments disclosed below.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

In a conventional liquid crystal display type head-up display system, a white Light Emitting Diode (LED) prepared from yellow phosphor is generally used as a backlight source, which is difficult to effectively generate high saturation colors, and the picture saturation is usually less than 60%. According to the related research record of capturing the attention of the user by using colors, the more saturated the colors, the faster the response speed of the observer to the colors, so if the saturation of the screen of the head-up display system is too low, the response time of the driver after seeing the screen will be increased, and the driver is difficult to quickly and accurately identify the required display information, which affects the driving safety.

In order to solve the problem, the application provides a display panel, optimize the light that the backlight sent through the quantum dot for the picture color saturation that display panel shows is higher, and when using this display panel among the new line display system, the driver can be fast, accurately discern required display information, thereby promotes the security of driving.

Quantum Dots (QDs) are nano-scale semiconductors that emit light of a specific frequency by applying a certain electric field or light pressure to the nano-semiconductor material, and the frequency of the emitted light changes with the size of the semiconductor, so that the color of the emitted light can be controlled by adjusting the size of the nano-semiconductor. When the quantum dot material is applied to a display panel, RGB narrow-band spectra with fixed wavelength can be generated, and the RGB narrow-band spectra can be mixed into high-purity white light, so that a picture with high color saturation can be obtained.

Fig. 1 shows a schematic structural diagram of a display panel in an embodiment of the present application.

Referring to fig. 1, a display panel according to an embodiment of the present disclosure includes abacklight module 100, a liquidcrystal display module 200, and a quantumdot film layer 300. Thebacklight module 100 has a light-emitting side, the liquidcrystal display module 200 is stacked on the light-emitting side of thebacklight module 100, the liquidcrystal display module 200 is provided with a light-receiving area for receiving light emitted by thebacklight module 100, the quantumdot film layer 300 is arranged between the liquidcrystal display module 200 and thebacklight module 100, and the orthographic projection of the quantumdot film layer 300 on a plane perpendicular to the light-emitting direction of thebacklight module 100 is overlapped with the orthographic projection of the light-receiving area on a plane perpendicular to the light-emitting direction of thebacklight module 100.

The display panel that this application embodiment provided, through set upquantum dot rete 300 betweenbacklight unit 100 and liquidcrystal display module 200, make the light that backlightunit 100 sent before getting into liquidcrystal display module 200, can pass throughquantum dot rete 300 earlier, thereby make the picture saturation that the display panel shows higher, based on this, when this display panel is applied to in the new line display system, the picture that the display panel shows can be distinguished with the environment better, be convenient for the driver accurately to discern required display information fast, promote the security.

It is understood that the light receiving area corresponds to a display area of the display panel. Specifically, an orthographic projection area of the light receiving area on a plane perpendicular to the light emitting direction of thebacklight module 100 is greater than or equal to an orthographic projection area of the display area on a plane perpendicular to the light emitting direction of thebacklight module 100. Preferably, an orthographic projection area of the light receiving area on a plane perpendicular to the light emitting direction of thebacklight module 100 is equal to an orthographic projection area of the display area on a plane perpendicular to the light emitting direction of thebacklight module 100, so that the display effect is ensured and the edge light leakage of the display panel is avoided.

In some embodiments, thebacklight module 100 includes alight source 110 and atotal reflection lens 111, and thetotal reflection lens 111 is located between thelight source 110 and the liquidcrystal display module 200. Thetotal reflection lens 111 is also called a total internal reflection lens, and according to the principle of total internal reflection, when a light ray enters a medium with a lower refractive index from a medium with a higher refractive index, if an incident angle is larger than a certain critical angle, the refracted light ray will disappear, and all the incident light ray will be reflected without entering the medium with a lower refractive index. The light emitted from thelight source 110 is transmitted to the liquidcrystal display module 200 through the total reflection head lens, so that the utilization rate of the light emitted from thelight source 110 can be improved.

Fig. 2 shows a schematic structural diagram of a display panel in another embodiment of the present application.

Referring to fig. 2, in other embodiments, thebacklight module 100 includes alight source 120 and areflective cup 121, and thelight source 120 is disposed in thereflective cup 121. The light emitted by thelight source 120 is transmitted to the liquidcrystal display module 200 by thereflective cup 121, so that the illumination distance and the illumination area can be increased under the condition of limited light energy, and the light energy utilization rate can be increased.

In some embodiments, thebacklight module 100 includes alight source 120 and a condensinglens 130, and the condensinglens 130 is located between thelight source 120 and the liquidcrystal display module 200. The light is condensed by the condensinglens 130, so that the liquidcrystal display module 200 can better utilize the light emitted from thelight source 120.

Specifically, the condensinglens 130 may be a cylindrical lens, the cylindrical lens is disposed between thelight source 120 and the liquidcrystal display module 200, and the orthographic projection of the cylindrical lens on the plane perpendicular to the light emitting direction of thebacklight module 100 completely covers the orthographic projection of the display area of the liquidcrystal display module 200 on the plane perpendicular to the light emitting direction of thebacklight module 100, so as to ensure that the liquidcrystal display module 200 can better utilize the light emitted by thelight source 120, and improve the display effect.

Fig. 3 shows a schematic structural diagram of a display panel in another embodiment of the present application.

Referring to fig. 3, in some embodiments, thelight source 110 has a light emitting surface, and the quantumdot film layer 300 is attached to the light emitting surface of thelight source 110. The quantumdot film layer 300 is attached to the light emitting surface of thelight source 110, so that the light emitted from thelight source 110 needs to pass through the quantumdot film layer 300 before entering other structures, and the quantumdot film layer 300 is used for optimizing the light emitted from thelight source 110 to generate uniform and high-purity white light, so as to obtain an image with high color saturation. Moreover, since the area of the light emitting surface of thelight source 110 is smaller than the area of the entire display panel, the quantumdot film layer 300 is attached to the light emitting surface of thelight source 110, and the area of the quantumdot film layer 300 required is also relatively smaller under the condition that the quantumdot film layer 300 completely covers the light emitting surface of thelight source 110, thereby reducing the cost.

Further, the quantumdot film layer 300 completely covers the light emitting surface of thelight source 110, so that the light emitted from thelight source 110 can enter the liquidcrystal display module 200 after passing through the quantumdot film layer 300, thereby ensuring high and uniform image saturation of the whole display panel.

Fig. 4 shows a schematic structural diagram of a display panel in another embodiment of the present application.

Referring to fig. 4, in some embodiments, thelight source 120 has a light emitting surface, and the quantumdot film layer 300 is attached to the light emitting surface of thelight source 120. The quantumdot film layer 300 is attached to the light emitting surface of thelight source 120, so that the light emitted from thelight source 120 needs to pass through the quantumdot film layer 300 before entering other structures, and the quantumdot film layer 300 is used for optimizing the light emitted from thelight source 120 to generate uniform and high-purity white light, so as to obtain an image with high color saturation. Moreover, since the area of the light emitting surface of thelight source 120 is smaller than the area of the entire display panel, the quantumdot film layer 300 is attached to the light emitting surface of thelight source 120, and the area of the quantumdot film layer 300 required is also relatively smaller under the condition that the quantumdot film layer 300 completely covers the light emitting surface of thelight source 120, thereby reducing the cost.

Referring to fig. 1, in some embodiments, thebacklight module 100 includes alight source 110 and atotal reflection lens 111, and thetotal reflection lens 111 is located between thelight source 110 and the liquidcrystal display module 200. The quantumdot film layer 300 is attached to a surface of thecondenser lens 130 facing away from thelight source 110. The quantumdot film layer 300 is attached to a surface of the condensinglens 130, which is opposite to thelight source 110, so that light emitted by thelight source 110 passes through the condensinglens 130 and then passes through the quantumdot film layer 300 before entering the liquidcrystal display module 200, and the quantumdot film layer 300 is utilized to optimize the light before entering the liquidcrystal display module 200, thereby generating uniform and high-purity white light to obtain an image with high color saturation. The quantumdot film layer 300 also functions as adiffusion sheet 140, so that the number ofdiffusion sheets 140 can be reduced, the thickness of the display panel can be reduced, and the cost can be reduced. Further, the quantumdot film layer 300 completely covers the surface of the side of the condensinglens 130 facing away from thelight source 110, so that the light emitted from thelight source 110 can enter the liquidcrystal display module 200 after passing through the quantumdot film layer 300, thereby ensuring high and uniform image saturation of the whole display panel.

Referring to fig. 2, thebacklight module 100 includes alight source 120 and areflective cup 121, and thelight source 120 is disposed in thereflective cup 121. The quantumdot film layer 300 is attached to a surface of thecondenser lens 130 facing away from thelight source 120. The quantumdot film layer 300 is attached to the surface of the condensinglens 130 on the side opposite to thelight source 120, so that light emitted by thelight source 120 passes through the condensinglens 130 and then passes through the quantumdot film layer 300 before entering the liquidcrystal display module 200, and the quantumdot film layer 300 is utilized to optimize the light entering the liquidcrystal display module 200, thereby generating uniform and high-purity white light to obtain an image with high color saturation. The quantumdot film layer 300 also functions as adiffusion sheet 140, so that the number ofdiffusion sheets 140 can be reduced, the thickness of the display panel can be reduced, and the cost can be reduced. Further, the quantumdot film layer 300 completely covers the surface of the side of the condensinglens 130 facing away from thelight source 120, so that the light emitted from thelight source 120 can enter the liquidcrystal display module 200 after passing through the quantumdot film layer 300, thereby ensuring high and uniform image saturation of the whole display panel.

In some embodiments, thebacklight module 100 further includes adiffusion sheet 140, and thediffusion sheet 140 is located on a side of thebacklight module 100 facing the liquidcrystal display module 200 to diffuse the light emitted from thelight source 120, so as to provide a uniformsurface light source 120 for the liquidcrystal display module 200. Specifically, thediffusion sheet 140 includes an antistatic coating layer, a Polyethylene terephthalate (PET) substrate, and a diffusion layer. The diffusion layer is internally dispersed with scattering particles, light rays can continuously pass through two media with different refractive indexes when passing through the diffusion layer, and the light rays can be refracted, reflected and scattered for many times in the process, so that the optical diffusion effect is achieved.

In some embodiments, thelight source 120 includes a light emitting diode, the light emitting diode is used as thelight source 120, the quantum dots of the quantumdot film layer 300 are excited by light energy emitted by the light emitting diode to generate RGB narrow-band spectrum with fixed wavelength, and the RGB narrow-band spectrum light-mixing layer is high-purity white light, so that the image generation unit improves color saturation.

Specifically, the light emitting diode may be a red light emitting diode, a filter light emitting diode, a blue light emitting diode.

Preferably, thelight source 120 includes a blue light emitting diode. The blue light emitting diode is used as thelight source 120, the quantum dots of the quantumdot film layer 300 receive the blue light energy laser to generate the RGB narrow-band spectrum with fixed wavelength, and the RGB narrow-band spectrum light mixing layer becomes high-purity white light, so that the color saturation of the image generation unit is improved. Moreover, the cost of using a blue led as thelight source 120 is lower than that of a conventional white led.

Fig. 5 shows a schematic structural diagram of a quantum dot film layer in an embodiment of the present application.

Referring to fig. 5, in some embodiments, the quantumdot film layer 300 includes aquantum dot layer 310 and twoprotection layers 320, wherein the twoprotection layers 320 are respectively disposed on two opposite sides of thequantum dot layer 310. By providing the water blocking films on the two opposite sides of thequantum dot layer 310, thequantum dot layer 310 can be prevented from being permeated by water vapor, and the transmission of light emitted by thelight source 120 to the liquidcrystal display module 200 is not hindered, so that the quantumdot film layer 300 can be ensured to function stably, and the display effect of the display panel is improved.

Further, the material of thepassivation layer 320 and the thickness of thepassivation layer 320 may be defined simultaneously or individually.

In one embodiment, theprotection layer 320 includes water blocking films, and the water blocking films are disposed on two opposite sides of thequantum dot layer 310, so that thequantum dot layer 310 is prevented from being penetrated by water vapor, and the transmission of light emitted from thelight source 120 to thelcd module 200 is not hindered, thereby ensuring that thequantum dot layer 310 can function stably. Further, the Water vapor Transmission Rate (WVT) of the Water-blocking film is 10-² g/m² Day to 10-⁶ g/m² ·day。

In one embodiment, the thickness of theprotection layer 320 is 25 μm to 200 μm. It is understood that theprotective layer 320 has relatively better protective effect when the thickness of theprotective layer 320 is larger, and the thickness of the display panel is too large when the thickness of theprotective layer 320 is too large. In the display panel provided by the embodiment of the application, the thickness of theprotection layer 320 is 25 μm to 200 μm, which can ensure that the thickness of the display panel is smaller while ensuring that theprotection layer 320 has a good protection effect.

Specifically,quantum dot layer 310 andprotection layer 320 may be adhered by an adhesive to ensure thatprotection layer 320 can be stably attached to the surface ofquantum dot layer 310, thereby stably protectingquantum dot layer 310. Thequantum dot layer 310 may be formed by coating a thin film substrate with a quantum dot material in a clean room environment having a temperature of 22 ℃ to 24 ℃, a humidity of 45% to 55%, and a clean room rating of 100Class or less.

In some embodiments, theprotection layer 320 is patterned to define a light-converting path of light emitted from thebacklight module 100 into a desired light shape, for example, a circular shape, an elliptical shape, a flat field, an angular bend, and the like, so that the display panel can be widely applied to head-up display systems in different environments. The pattern disposed on theprotective layer 320 may be implemented by nano-lamination technology.

In order to solve the problem that a driver cannot easily and accurately identify required display information and driving safety is affected when a conventional head-up display system is used, an embodiment of the present application further provides a head-up display, where the head-up display includes the display panel in the above embodiment, and since the head-up display includes all technical features of the display panel, the head-up display has all technical effects in the above embodiment, and details are not repeated here.

In order to solve the problem that when a conventional head-up display system is used, a driver cannot easily and accurately identify required display information, and driving safety is affected, an embodiment of the application further provides a vehicle, where the vehicle includes the head-up display in the above embodiment. The vehicle can be a vehicle, a ship or an aircraft.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (10)

1. A display panel, comprising:

the backlight module is provided with a light emitting side;

the liquid crystal display module is arranged on the light emitting side of the backlight module in a laminated manner and is provided with a light receiving area for receiving light emitted by the backlight module; and

the quantum dot film layer is arranged between the liquid crystal display module and the backlight module;

the orthographic projection of the quantum dot film layer on a plane perpendicular to the light emergent direction of the backlight module is overlapped with the orthographic projection of the light receiving area on a plane perpendicular to the light emergent direction of the backlight module.

2. The display panel according to claim 1, wherein the backlight module comprises a light source and a total reflection lens, and the total reflection lens is located between the light source and the liquid crystal display module; or

The backlight module comprises a light source and a reflecting cup, wherein the light source is arranged in the reflecting cup.

3. The display panel of claim 1, wherein the backlight module comprises a light source and a condensing lens, and the condensing lens is located between the light source and the liquid crystal display module.

4. The display panel of claim 3, wherein the light source has a light emitting surface, and the quantum dot film layer is attached to the light emitting surface of the light source.

5. The display panel of claim 3, wherein the quantum dot film layer is attached to a surface of the condenser lens facing away from the light source.

6. The display panel according to any one of claims 2 to 5, wherein the light source comprises a blue light emitting diode.

7. The display panel according to any one of claims 1 to 5, wherein the quantum dot film layer comprises a quantum dot layer and two protective layers, and the two protective layers are respectively disposed on two opposite sides of the quantum dot layer.

8. The display panel according to claim 7, wherein the protective layer comprises a water-blocking film; and/or

The protective layer has a thickness of 25 to 200 μm.

9. A head-up display comprising the display panel according to any one of claims 1 to 8.

10. A vehicle comprising the heads-up display of claim 9.

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