Display panel, display device and carrier

Abstract

The invention provides a display panel, a display device and a carrier. The display panel comprises a substrate; the pixel rows are located on one side of the substrate, extend in the first direction and are arranged in the second direction, each pixel row comprises a plurality of sub-pixels arranged in the first direction, and the first direction intersects with the second direction; the prism array is located on the side, away from the substrate, of the film layer where the pixel rows are located, and comprises a plurality of aspheric cylindrical prisms which extend in the first direction and are arranged in the second direction; the orthographic projection of at least one pixel row on the substrate is overlapped with the orthographic projection of the aspheric cylindrical prism on the substrate. According to the embodiment of the invention, the collimation of the emergent light is improved. Therefore, the angle range of a user watching the screen is adapted, the light energy utilization rate of the screen is improved, and the energy efficiency of the screen is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of display technology, and in particular to a display panel, a display device and a vehicle. BACKGROUND

[0002] With the development of science and technology and the progress of society, people's dependence on information exchange and transmission is increasing, and as the main carrier and material basis of information exchange and transmission, display has become a hot research topic for many scientists.

[0003] In the PHUD (Panoramic Head-Up Display) technology, the screen is incident on the car windshield at an angle close to the Brewster angle, and light rays in other directions will not enter the human eye. Therefore, PHUD has a highly collimated characteristic in the pitch angle, and has a large width in the azimuth angle. In view of the above function, when designing the light-emitting angle of the screen, there is a higher collimation requirement in the pitch angle, and a larger light-emitting angle is required in the azimuth angle.

[0004] Generally, the light-emitting angle of the screen is a full azimuth angle, and the angle range of the user watching the screen is limited, so the energy efficiency of the screen is low. SUMMARY

[0005] The present application provides a display panel, a display device and a vehicle to improve the collimation of the outgoing light. Thus, the angle range of the user watching the screen is adapted, the light energy utilization rate of the screen is improved, and the energy efficiency of the screen is improved.

[0006] In a first aspect, an embodiment of the present application provides a display panel, comprising:

[0007] a substrate;

[0008] a plurality of pixel rows located on one side of the substrate, extending along a first direction and arranged along a second direction, the pixel rows comprising a plurality of sub-pixels arranged along the first direction, the first direction intersecting the second direction;

[0009] a prism array located on a side of a film layer of the plurality of pixel rows away from the substrate, comprising a plurality of aspherical cylindrical prisms extending along the first direction and arranged along the second direction;

[0010] The orthographic projection of at least one of the pixel rows on the substrate overlaps the orthographic projection of the aspherical cylindrical prisms on the substrate.

[0011] In a second aspect, an embodiment of the present application provides a display device comprising the display panel of the first aspect.

[0012] In a third aspect, an embodiment of the present application provides a vehicle comprising the display device of the second aspect and a windshield.

[0013] In this embodiment of the invention, an aspherical prism is disposed above the sub-pixel. The aspherical prism deflects the light emitted from the sub-pixel, reducing the angular distribution range of the emitted light rays after passing through the prism. This concentrates the emitted light within a specific angular range, rather than emitting light from all angles, thereby concentrating more light energy within that angular range (specifically, an angle near the pitch angle), improving the collimation of the emitted light rays. This adapts to the user's viewing angle range, improving the screen's light energy utilization and energy efficiency. Attached Figure Description

[0014] Figure 1 A three-dimensional structural diagram of a display panel provided in an embodiment of the present invention;

[0015] Figure 2 This is a top view structural diagram of a display panel provided in an embodiment of the present invention;

[0016] Figure 3 For along Figure 2 A schematic diagram of the cross-sectional structure along the AA' direction;

[0017] Figure 4 This is a top view schematic diagram of another display panel provided in an embodiment of the present invention;

[0018] Figure 5 For along Figure 4 Schematic diagram of the cross-sectional structure in the middle BB' direction;

[0019] Figure 6 A cross-sectional structural diagram of another display panel provided in an embodiment of the present invention;

[0020] Figure 7 A cross-sectional structural diagram of another display panel provided in an embodiment of the present invention;

[0021] Figure 8 A cross-sectional structural diagram of another display panel provided in an embodiment of the present invention;

[0022] Figure 9 A cross-sectional structural diagram of another display panel provided in an embodiment of the present invention;

[0023] Figure 10 A cross-sectional structural diagram of another display panel provided in an embodiment of the present invention;

[0024] Figure 11 A cross-sectional structural diagram of another display panel provided in an embodiment of the present invention;

[0025] Figure 12This is a top view schematic diagram of another display panel provided in an embodiment of the present invention;

[0026] Figure 13 For along Figure 12 A schematic diagram of the cross-sectional structure along the CC' direction;

[0027] Figure 14 This is a top view schematic diagram of another display panel provided in an embodiment of the present invention;

[0028] Figure 15 For along Figure 14 A schematic diagram of the cross-sectional structure along the DD' direction;

[0029] Figure 16 This is a top view schematic diagram of another display panel provided in an embodiment of the present invention;

[0030] Figure 17 For along Figure 16 A schematic diagram of the cross-sectional structure along the EE' direction;

[0031] Figure 18 A cross-sectional structural diagram of another display panel provided in an embodiment of the present invention;

[0032] Figure 19 A cross-sectional structural diagram of another display panel provided in an embodiment of the present invention;

[0033] Figure 20 A cross-sectional structural diagram of another display panel provided in an embodiment of the present invention;

[0034] Figure 21 A cross-sectional structural diagram of another display panel provided in an embodiment of the present invention;

[0035] Figure 22 A cross-sectional structural diagram of another display panel provided in an embodiment of the present invention;

[0036] Figure 23 A schematic diagram of a display device provided in an embodiment of the present invention;

[0037] Figure 24 A schematic diagram of a vehicle provided in an embodiment of the present invention;

[0038] Figure 25 This is a schematic diagram of another vehicle provided in an embodiment of the present invention. Detailed Implementation

[0039] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0040] Figure 1 A three-dimensional structural diagram of a display panel provided in an embodiment of the present invention; Figure 2 This is a top view structural diagram of a display panel provided in an embodiment of the present invention; Figure 3 For along Figure 2 Schematic diagram of the cross-sectional structure along the AA' direction; Reference Figures 1-3 The display panel includes a substrate 110, a plurality of pixel rows 120, and a prism array 200. The plurality of pixel rows 120 are located on one side of the substrate 110, extending along a first direction X and arranged along a second direction Y. Each pixel row 120 includes a plurality of sub-pixels 130 arranged along the first direction X, which intersects the second direction Y. The first direction X and the second direction Y can be perpendicular to each other, or they can form an angle greater than 0° and less than 90°. Figure 1 In the image, a rectangle is used to indicate the film layer where multiple pixel rows 120 are located, and a rectangle is used to indicate the film layer where the prism array 200 is located.

[0041] The prism array 200 is located on the side of the film layer containing the multiple pixel rows 120 away from the substrate 110. The prism array 200 includes multiple aspherical cylindrical prisms 210 extending along a first direction X and arranged along a second direction Y. At least one orthogonal projection of the pixel row 120 onto the substrate 110 overlaps with the orthogonal projection of the aspherical cylindrical prism 210 onto the substrate 110. The core optical surface of a conventional cylindrical prism is a cylinder, which has curvature in only one direction and no curvature in the other. The aspherical cylindrical prism 210 retains the unidirectional light-modulating characteristics of a conventional cylindrical prism, having curvature in only one direction (specifically the second direction Y) and no curvature in the other direction (specifically the first direction X). The core optical surface of the aspherical cylindrical prism 210 is an aspherical cylinder, but unlike the constant curvature of a cylinder, the curvature of the aspherical cylinder changes with position.

[0042] In this embodiment of the invention, an aspherical prism 210 is disposed above the sub-pixel 130. The aspherical prism 210 deflects the light emitted from the sub-pixel 130, reducing the angular distribution range of the emitted light rays after passing through the aspherical prism 210. This concentrates the emitted light within a specific angular range, rather than emitting light from all angles, thereby concentrating more light energy within that angular range (specifically, an angle near the pitch angle β), improving the collimation of the emitted light rays. This adapts to the user's viewing angle range, improving the screen's light energy utilization and energy efficiency. The screen includes a display panel, and may further include at least one optical element that deflects the light emitted from the display panel.

[0043] refer to Figure 2 Multiple sub-pixels 130 arranged along the first direction X can constitute a single pixel. For example, the multiple sub-pixels 130 in a pixel include a first sub-pixel 131, a second sub-pixel 132, and a third sub-pixel 133. The first sub-pixel 131 emits red light, the second sub-pixel 132 emits green light, and the third sub-pixel 133 emits blue light. The light emitted by the first sub-pixel 131, the second sub-pixel 132, and the third sub-pixel 133 in the pixel is combined to form the desired color. Multiple sub-pixels 130 arranged along the second direction Y, due to the large distance between adjacent pixels, cannot visually combine colors to form the color emitted by a single pixel.

[0044] Optionally, refer to Figures 1-3 The orthographic projection of a pixel row 120 onto the substrate 110 lies within the orthographic projection of the aspherical prism 210 onto the substrate 110. The aspherical prism 210 covers a pixel row 120, facilitating the placement of sub-pixels 130 within this row, for example, by setting sub-pixels 130 according to the focal point of the aspherical prism 210. This concentrates more light energy within a preset angular range (e.g., the angular range containing angles near the pitch angle β), improving the collimation of the emitted light. The orthographic projection onto the substrate 110 refers to the projection along the third direction Z. The third direction Z is perpendicular to the plane containing the substrate 110. In one example, the first direction X, the second direction Y, and the third direction Z constitute a three-dimensional Cartesian coordinate system.

[0045] Figure 4 This is a top view schematic diagram of another display panel provided in an embodiment of the present invention; Figure 5 For along Figure 4 Schematic diagram of cross-sectional structure along the BB' direction; Reference Figure 4 and Figure 5 At least two pixel rows 120, in their orthographic projection onto the substrate 110, lie within the orthographic projection of the aspherical prism 210 onto the substrate 110. One aspherical prism 210 covers at least two pixel rows 120 (in...Figure 4 and Figure 5 (Illustrative image shown: an aspherical cylindrical prism 210 covering two pixel rows 120).

[0046] Figure 6 This is a cross-sectional structural diagram of another display panel provided in an embodiment of the present invention; see reference. Figure 6 , Figure 6 The direction of light propagation is indicated by an arrow. The cross-section of the aspherical cylindrical prism 210 is a part of the aspherical surface 310, which is symmetrical about the first axis 320. The extension direction of the first axis 320 is parallel to the light emission direction of the central ray in the beam emitted from the display panel.

[0047] The aspherical surface 310 may include, for example, a parabolic surface or an even-order aspherical surface. The aspherical prism 210 deflects the light emitted from the sub-pixel 130, directing it towards the extension direction of the first axis 320 of the aspherical surface 310. The light rays that exit the display panel after being deflected by the aspherical prism 210 are collimated. The collimated light has high parallelism, approaching parallel light, and the angle distribution of the light rays within the collimated beam is within a small range. The central ray within the beam emitted from the display panel is the central ray of the collimated light, and the remaining rays are symmetrically distributed about the central ray.

[0048] Optionally, refer to Figure 6 The curvature of the cross-section of the aspherical prism 210 is not a constant value, but varies with position. Along the second direction Y, the curvature of the cross-section of the aspherical prism 210 first gradually increases and then gradually decreases. Along the second direction Y, the curvature of the cross-section of the aspherical prism 210 is larger at the middle position of the aspherical prism 210 and smaller at the two sides. The curvature of the cross-section of the aspherical prism 210 can be different at the two sides.

[0049] Figure 7 This is a cross-sectional structural diagram of another display panel provided in an embodiment of the present invention; see reference. Figure 7 The display panel also includes an organic film 220, which is located between the film layer containing the pixel row 120 and the prism array 200. The organic film 220 is in contact with the aspherical prism 210. The organic film 220 provides contact force to the aspherical prism 210, supporting it. On the other hand, the organic film 220 covers the sub-pixels 130 in the pixel row 120, providing protection for the sub-pixels 130 and preventing the pressure of the aspherical prism 210 from acting directly on the sub-pixels 130, thereby avoiding damage to the sub-pixels 130 due to excessive external force.

[0050] Optionally, refer to Figure 7The thickness of the organic film 220 increases, and the distance between the aspheric cylindrical prism 210 and the sub-pixel 130 increases. The thickness of the organic film 220 decreases, and the distance between the aspheric cylindrical prism 210 and the sub-pixel 130 decreases. The thickness of the organic film 220 in the direction perpendicular to the plane where the substrate 110 is located, that is, along the third direction Z, is H1, and 15 μm≤H1≤50 μm. In this way, the distance between the aspheric cylindrical prism 210 and the sub-pixel 130 is set within a reasonable range. Even if the light emitted by the edge region (for example, the region S1) of the sub-pixel 130 deviates from the preset angle (for example, the pitch angle β) after being deflected by the aspheric cylindrical prism 210, the collimation degree of the emitted light is improved.

[0051] Figure 8 Another cross-sectional structure of a display panel is provided for an embodiment of the present application. Referring to Figure 8 The display panel includes a first region AA1 and a second region AA2. The distance between the second region AA2 and the edge of the display panel is greater than the distance between the first region AA1 and the edge of the display panel. The first region AA1 is located in the central region of the display panel, and the second region AA2 is located in the peripheral region of the display panel and is located outside the first region AA1. A plurality of pixel rows 120 are located in the first region AA1. The display panel further includes a cover plate 230 and a support 420. The prism array 200 is arranged on the side of the cover plate 230 facing the substrate 110, and the support 420 is located in the second region AA2 and between the cover plate 230 and the organic film 220. The support 420 does not occupy the space of the first region AA1, so that the distance between the support 420 in the second region AA2 and the sub-pixel 130 in the first region AA1 is far, and the adverse effects such as the pressure of the support 420 on the sub-pixel 130 in the first region AA1 are reduced. On the other hand, one end of the support 420 is in contact with the cover plate 230, and the other end of the support 420 is in contact with the organic film 220. The support 420 provides support for the cover plate 230 and provides a space for accommodating the prism array 200 between the cover plate 230 and the organic film 220, thereby reducing the deformation of the aspheric cylindrical prism 210 in the prism array 200 due to pressure, for example, reducing the deformation of the aspheric cylindrical prism 210 and the organic film 220 at the contact point.

[0052] Exemplarily, referring to Figure 8 In the process of manufacturing the display panel, the prism array 200 can be formed on the cover plate 230, the plurality of pixel rows 120 and the organic film 220 can be formed on the substrate 110, and the side of the cover plate 230 provided with the prism array 200 is inverted and connected to the side of the substrate 110 provided with the organic film 220.

[0053] Exemplarily, referring to Figure 8In other embodiments, the first region AA1 and the second region AA2 can also both be display regions.

[0054] Exemplarily, in some embodiments, the support 420 can also not be provided, and the prism array 200 is used as the support to simplify the manufacturing process of the display panel and reduce the manufacturing cost.

[0055] Optionally, referring to Figure 8 The surface of the aspheric cylindrical prism 210 includes a plane 211 and a curved surface 212, and the plane 211 and the curved surface 212 are connected. The curved surface 212 of the aspheric cylindrical prism 210 is a functional surface thereof, and is used to realize the deflection of light. The curved surface 212 of the aspheric cylindrical prism 210 is arranged towards the pixel row 120. Since the plane 211 of the aspheric cylindrical prism 210 is parallel to the plane in which the cover plate 230 is located, and the plane 211 is closer to the cover plate 230 than the curved surface 212. In the process of manufacturing the display panel, the aspheric cylindrical prism 210 in the prism array 200 can be formed on the cover plate 230 by processes such as imprinting or etching. The manufacturing process is simplified.

[0056] Exemplarily, the vertex of the curved surface 212 of the aspheric cylindrical prism 210 is in contact with the organic film 220. The curved surface 212 of the aspheric cylindrical prism 210 can also be in air contact. The media on both sides of the curved surface 212 are the material constituting the aspheric cylindrical prism 210 and air, respectively, and the refractive index of the air is very small, thereby reducing the refractive index requirement of the material constituting the aspheric cylindrical prism 210.

[0057] Figure 9 Another cross-sectional structure schematic diagram of a display panel provided by an embodiment of the present application is provided; referring to Figure 9 The plane 211 is located between the curved surface 212 and the film layer in which the pixel row 120 is located. The curved surface 212 of the aspheric cylindrical prism 210 is arranged towards the cover plate 230. The plane 211 is closer to the substrate 110 than the curved surface 212. In the process of manufacturing the display panel, the aspheric cylindrical prism 210 in the prism array 200 can be formed on the side of the organic film 220 away from the substrate 110 by etching processes.

[0058] Figure 10 Another cross-sectional structure schematic diagram of a display panel provided by an embodiment of the present application is provided; referring to Figure 10The organic film 220 is provided with a plurality of grooves 221 on a side facing the prism array 200, and the aspheric cylindrical prism 210 is located in the groove 221; specifically, the aspheric cylindrical prism 210 can be located in the groove 221 one by one, that is, one groove 221 accommodates one aspheric cylindrical prism 210. The refractive index of the aspheric cylindrical prism 210 is greater than the refractive index of the organic film 220. A large part of the curved surface 212 of the aspheric cylindrical prism 210 is in contact with the groove 221, which increases the contact area of the aspheric cylindrical prism 210 and the organic film 220, reduces the pressure per unit area, and thus reduces the deformation of the aspheric cylindrical prism 210 caused by the pressure.

[0059] Optionally, referring to Figure 2 and Figure 3 , the focal point 213 of the aspheric cylindrical prism 210 is in the orthographic projection of the substrate 110 and is located in the orthographic projection of the sub-pixel 130 on the substrate 110. By setting the focal point 213 of the aspheric cylindrical prism 210 near the sub-pixel 130, the light emitted by the sub-pixel 130 can be deflected by the aspheric cylindrical prism 210 and then emitted as collimated light, thereby improving the collimation of the emitted light.

[0060] Further, referring to Figure 2 and Figure 3 , the focal point 213 of the aspheric cylindrical prism 210 coincides with the center 134 of the sub-pixel 130. It can be understood that even if the focal point 213 of the aspheric cylindrical prism 210 coincides with the center 134 of the sub-pixel 130, the light emitted by the area outside the center 134 of the sub-pixel 130 (for example, the area S1 of Figure 7 , there will be a certain angle relative to the direction of the central light beam of the display panel. Since the focal point 213 of the aspheric cylindrical prism 210 coincides with the center 134 of the sub-pixel 130, the angle distribution range of the emitted light after passing through the aspheric cylindrical prism 210 is reduced, and the collimation of the emitted light is improved.

[0061] In other embodiments, the focal point 213 of the aspheric cylindrical prism 210 can not coincide with the center 134 of the sub-pixel 130.

[0062] Figure 11 Another cross-sectional structure schematic diagram of a display panel provided by an embodiment of the present application; referring to Figure 11 , the surface of the aspheric cylindrical prism 210 includes a plane 211 and a curved surface 212, and the plane 211 and the curved surface 212 are connected; the distance between the vertex of the curved surface 212 and the center 134 of the sub-pixel 130 along the third direction Z perpendicular to the plane of the substrate 110 is H2, as Figure 11In the example shown, surface 212 is located between plane 211 and the film layer containing pixel row 120. Along the third direction Z, the minimum distance between surface 212 and the center 134 of sub-pixel 130 is H2. The distance between the focal point 213 of aspherical prism 210 and the center 134 of sub-pixel 130 is H3. In this embodiment of the invention, the center 134 of sub-pixel 130 is allowed to be a certain distance from the focal point 213 of the aspherical prism 210, that is, defocusing is allowed within a certain range. This certain range of defocusing provides better adaptability for users of different heights. Users of different heights have different eye heights in the vertical direction, requiring the display panel's emission angle to have a certain angular range. Thus, the sub-pixel 130 can be set to have a certain degree of defocusing.

[0063] Optionally, refer to Figure 11 The focal point 213 of the aspherical cylindrical prism 210 is located between the film layer containing the pixel row 120 and the film layer containing the prism array 200. When the focal point 213 of the aspherical cylindrical prism 210 is located above the film layer containing the pixel row 120, it increases the light flux, thereby improving the light utilization rate of the display panel and the brightness of the display panel.

[0064] Figure 12 This is a top view schematic diagram of another display panel provided in an embodiment of the present invention; Figure 13 For along Figure 12 Schematic diagram of cross-sectional structure along the CC' direction; Reference Figure 12 and Figure 13 The focal point 213 of the aspherical prism 210 is positioned at an interval between its projection onto the substrate 11 and the projection onto the substrate 11 of the center 134 of the sub-pixel 130. There is a certain distance between the projection of the focal point 213 of the aspherical prism 210 onto the substrate 11 and the projection onto the substrate 11 of the center 134 of the sub-pixel 130. In this embodiment of the invention, there is not only vertical defocus but also horizontal defocus.

[0065] For example, refer to Figure 11 The adjacent aspherical cylindrical prisms 210 are spaced apart. For example, in some scenarios, due to manufacturing limitations, it is not possible to fill the entire layout space with aspherical cylindrical prisms 210, and there are gaps between adjacent aspherical cylindrical prisms 210.

[0066] Figure 14 This is a top view schematic diagram of another display panel provided in an embodiment of the present invention; Figure 15 For along Figure 14 Schematic diagram of cross-sectional structure along the DD' direction; Reference Figure 14 and Figure 15The adjacent aspheric cylindrical prisms 210 are in contact. There is no gap between the adjacent aspheric cylindrical prisms 210. Thus, at least in the first region AA1, the aspheric cylindrical prisms 210 fill the entire layout space. Compared with the gap without light effect, the aspheric cylindrical prisms 210 have light effect and can deflect the light rays incident thereon. In this way, the light utilization rate of the display panel is improved, and the luminous brightness of the display panel is improved.

[0067] Figure 16 Another top view structural schematic diagram of a display panel provided by an embodiment of the present application is provided. Figure 17 The display panel is arranged along Figure 16 A cross-sectional structural schematic diagram in the EE' direction is provided. Figure 18 Another cross-sectional structural schematic diagram of a display panel provided by an embodiment of the present application is provided. Figure 18 The propagation direction of the light rays is indicated by arrows. Referring to Figures 16-18 The display panel further includes triangular prism prisms 510, the triangular prism prisms 510 extend along the first direction X and are located between the adjacent aspheric cylindrical prisms 210 along the second direction Y. In the embodiment of the present application, the triangular prism prisms 510 are used to fill the gap without light effect. After the large-angle light rays emitted by the sub-pixels 130 are deflected by the triangular prism prisms 510, the large-angle light rays are emitted according to a preset angle range (for example, an angle range in which angles near the pitch angle β are located), so that the large-angle emitted light rays are recycled, and the luminous brightness of the display panel is increased.

[0068] Exemplarily, the plurality of triangular prism prisms 510 are arranged along the second direction Y. Along the second direction Y, the aspheric cylindrical prisms 210 and the triangular prism prisms 510 are arranged alternately and are spaced apart from each other.

[0069] Optionally, referring to Figures 16-18 Along the second direction Y, the center 134 of the sub-pixel 130 in the orthographic projection of the substrate 110 is located between the center 214 of the aspheric cylindrical prism 210 in the orthographic projection of the substrate 110 and the center 514 of the triangular prism prism 510 in the orthographic projection of the substrate 110. Thus, the aspheric cylindrical prism 210 can emit most of the light rays emitted by the sub-pixel 130 according to the preset angle range, and the triangular prism prism 510 can emit the large-angle light rays emitted by the sub-pixel 130 according to the preset angle range.

[0070] Exemplarily, without considering the heights of the center 134 of the sub-pixel 130, the center 214 of the aspheric cylindrical prism 210, and the center 514 of the triangular prism prism 510 along the third direction Z, in the case of Figure 17In the shown region S2, the center 214 of the aspheric cylindrical prism 210 and the center 514 of the triangular prism 510 are located on both sides of the center 134 of the sub-pixel 130. The region S2 can be regarded as one basic repeating unit along the second direction Y.

[0071] Optionally, referring to Figures 16-18 , the triangular prism 510 comprises a first surface 511, a second surface 512 and a third surface 513. Along the second direction Y, the first surface 511 is parallel to the plane where the substrate 110 is located, i.e. the XY plane determined by the first direction X and the second direction Y. Along the second direction Y, the second surface 512 is located between the aspheric cylindrical prism 210 and the third surface 513; the first surface 511 and the second surface 512 form a first included angle θ, and the first surface 511 and the third surface 513 form a second included angle α, wherein the first included angle θ is smaller than the second included angle α, and the second included angle α is smaller than 90°. Thus, the large-angle light emitted by the sub-pixel 130 can enter the triangular prism 510 through the second surface 512, be reflected at the third surface 513, and exit the triangular prism 510 through the first surface 511, and finally exit according to a preset angle range.

[0072] Further, referring to Figures 16-18 , the first included angle is θ, and the second included angle is α, and α>θ+41.8°. The refractive index of the material constituting the triangular prism 510 is greater than the refractive index of air. In the case of satisfying α>θ+41.8°, total reflection can occur at the third surface 513, thereby improving the reflectivity of the light at the third surface 513, improving the light utilization rate of the display panel, and improving the luminous brightness of the display panel.

[0073] Figure 19 Another cross-sectional structure schematic diagram of a display panel is provided for the embodiments of the present application; referring to Figure 19 , the display panel further comprises a reflective metal layer 520 disposed on the third surface 513. Along the second direction Y, the reflective metal layer 520 is located on the side of the triangular prism 510 away from the aspheric cylindrical prism 210. In the case of disposing the reflective metal layer 520, total reflection can not be required to occur at the third surface 513, and the reflective metal layer 520 has a high reflectivity, thereby reducing the design requirements of the triangular prism 510 and increasing the stability of the triangular prism 510. Even if the triangular prism 510 is deformed due to external force during the manufacturing and use of the display panel, it basically does not affect the reflection angle of the light at the position of the reflective metal layer 520, and does not affect the angle of the light finally exiting the display panel. On the other hand, the reflective metal layer 520 can also block the crosstalk light (such as the dashed arrow shown in Figure 19 ) in the adjacent repeating unit.

[0074] Optionally, referring to Figure 16 and Figure 17 , the center 134 of the sub-pixel 130 overlaps with the aspherical columnar prism 210 in the direction perpendicular to the plane where the substrate 110 is located, i.e., along the third direction Z. In order to facilitate the aspherical columnar prism 210 to deflect a large part of the light emitted by the sub-pixel 130, the triangular prism 510 deflects a small part of the light emitted by the sub-pixel 130, and specifically, the triangular prism 510 deflects the light with a large angle emitted by the sub-pixel 130.

[0075] It should be noted that the position of the center 134 of the sub-pixel 130 is related to the thickness of the organic film 220. In the case of selected exit angle, the thicker the thickness of the organic film 220, the closer the position of the center 134 of the sub-pixel 130 to the center 514 of the triangular prism 510; the thinner the thickness of the organic film 220, the closer the position of the center 134 of the sub-pixel 130 to the center 214 of the aspherical columnar prism 210.

[0076] Figure 20 Another cross-sectional structure schematic diagram of a display panel provided by an embodiment of the present application is provided; referring to Figure 20 , the thickness of the organic film 220 is large, and the center 134 of the sub-pixel 130 overlaps with the triangular prism 510 along the third direction Z.

[0077] Figure 21 Another cross-sectional structure schematic diagram of a display panel provided by an embodiment of the present application is provided; referring to Figure 21 , the display panel further comprises a collimating film 600, the collimating film 600 is used to filter out crosstalk light outside a preset angle range, and the collimation degree of the emitted light is improved. The position of the collimating film 600 can be set as needed.

[0078] Exemplarily, referring to Figure 21 , the sub-pixel 130 comprises a micro-led or a mini-led. The micro-led or the mini-led comprises an inorganic light-emitting diode. The inorganic light-emitting diode has a smaller occupation area and a higher light-emitting brightness, so that a higher pixel density can be set.

[0079] Figure 22 Another cross-sectional structure schematic diagram of a display panel provided by an embodiment of the present application is provided; referring to Figure 22The sub-pixel 130 comprises an organic light-emitting diode. The organic light-emitting diode comprises an anode, an auxiliary functional layer (such as a hole transport layer, an electron transport layer, an electron injection layer, etc.), a light-emitting layer, and a cathode. When a voltage is applied to the anode and the cathode, holes and electrons are respectively transported to the light-emitting layer, and the two are recombined in the light-emitting layer to form an exciton. The exciton migrates under the action of an electric field, transfers energy to the light-emitting material, and excites the electrons in the light-emitting material to transition from a ground state to an excited state. The excited state energy is deactivated by radiation to generate photons, releasing light energy.

[0080] Exemplarily, referring to Figure 22 The display panel can further comprise a thin film encapsulation layer 430 covering the sub-pixel 130, preventing water vapor and oxygen from eroding the sub-pixel 130, thereby improving the service life of the display panel. The thin film encapsulation layer 430 is located between the organic film 220 and the film layer where the plurality of pixel rows 120 are located.

[0081] In other embodiments, the display panel can also be a liquid crystal display panel. In the liquid crystal display panel, the size of the sub-pixel can be defined by the opening of the black matrix. The sub-pixel comprises a pixel electrode, a common electrode, and liquid crystal molecules within the range defined by the opening of the black matrix.

[0082] Exemplarily, referring to Figure 21 and Figure 22 The display panel can further comprise a pixel circuit 410. The film layer where the pixel circuit 410 is located is between the substrate 110 and the film layer where the plurality of pixel rows 120 are located. The pixel circuit 410 is used to provide a driving voltage or a driving current for the sub-pixel 130 in the pixel row 120.

[0083] Optionally, referring to Figure 18 The triangular prism prism 510 and the aspherical cylindrical prism 210 are made of the same material. Thus, the triangular prism prism 510 and the aspherical cylindrical prism 210 can be formed in the same process, simplifying the process.

[0084] Figure 23 A schematic diagram of a display device provided by an embodiment of the present application; referring to Figure 23 The display device comprises the display panel in the above embodiments. The display device provided by the embodiment of the present application can be a vehicle-mounted display as shown in Figure 23 , or any electronic product with a display function, including but not limited to the following categories: television, notebook computer, desktop display, electronic paper display device, tablet computer, digital camera, smart bracelet, smart glasses, industrial control device, medical display screen, touch interactive terminal, etc. The embodiment of the present application does not make special limitations on this.

[0085] Figure 24 A schematic diagram of a vehicle provided by an embodiment of the present application;Figure 25 Another schematic diagram of a vehicle is provided for embodiments of the present application. Referring to Figure 24 and Figure 25 The vehicle includes a display device 610 and a windshield 650.

[0086] The light rays emitted by the display device 610 are transmitted to the windshield 650, which can reflect the light rays into an eyebox and form a virtual image on the other side of the windshield 650, so that the driver can clearly see the key information of the vehicle without moving his / her line of sight away from the road, and timely understand the key information such as the running state of the vehicle, navigation guidance, and safety warning, so as to make corresponding driving decisions and operations.

[0087] The head-up display provided by the embodiments of the present application can be a vehicle head-up display, or any other product with a head-up display function, including but not limited to the following categories: head-up display glasses, head-up display mobile phones, head-up display home appliances, head-up display aircraft, head-up display vehicles, etc. The embodiments of the present application do not make special limitations on this. The vehicle may, for example, be a car, an airplane, or a ship.

[0088] Exemplarily, the display device 610 has a large light-emitting angle in the direction of the azimuth angle H. It has a highly collimated characteristic in the direction of the elevation angle β. The embodiments of the present application make the central angle of the emitted light rays have a certain angle with the vertical direction. The light rays are emitted in the angle around the elevation angle β and are projected to the windshield 650. The first direction X is the horizontal direction, and the first direction X is parallel to the direction of the line connecting the two eyes of the user.

[0089] Exemplarily, the display device 610 is arranged on a carrier 660 inside the vehicle, and the display device 610 is electrically connected to a control structure (not shown) inside the vehicle through a connecting line 620. Figure 25 The display device 610 forms a first virtual image 630 on one side of the windshield 650. In order to illustrate the imaging manner of the display device 610 on the windshield 650, Figure 25 the position of a second virtual image 640 corresponding to the connecting line 620 is also illustrated in the figure. It can be understood that, since the connecting line 620 does not emit light, the second virtual image 640 cannot be seen by the eyes of the user in the actual product.

[0090] Note that the above merely describes preferred embodiments of the present application and the principles of the technology applied. Those skilled in the art will understand that the present application is not limited to the specific embodiments described herein, and that various obvious changes, modifications, combinations and substitutions can be made by those skilled in the art without departing from the scope of the present application. Therefore, although the present application has been described in detail through the above embodiments, the present application is not limited to the above embodiments, and can include more other equivalent embodiments without departing from the concept of the present application, and the scope of the present application is determined by the scope of the claims.

Claims

1. A display panel, characterized in that, include: Substrate; Multiple pixel rows are located on one side of the substrate, extending along a first direction and arranged along a second direction, the pixel rows including multiple sub-pixels arranged along the first direction, the first direction intersecting the second direction; A prism array, located on the side of the film layer containing the plurality of pixel rows away from the substrate, includes a plurality of aspherical cylindrical prisms extending along the first direction and arranged along the second direction; At least one of the pixel rows has its orthographic projection onto the substrate overlapping with the orthographic projection of the aspherical cylindrical prism onto the substrate.

2. The display panel according to claim 1, characterized in that, The orthographic projection of one of the pixel rows onto the substrate lies within the orthographic projection of the aspherical cylindrical prism onto the substrate.

3. The display panel according to claim 1, characterized in that, The cross-section of the aspherical cylindrical prism is a portion of an aspherical surface, and the aspherical surface is symmetrical about the first axis; The extension direction of the first axis is parallel to the light emission direction of the central ray within the beam emitted from the display panel.

4. The display panel according to claim 3, characterized in that, Along the second direction, the curvature of the cross section of the aspherical cylindrical prism gradually increases first and then gradually decreases.

5. The display panel according to claim 1, characterized in that, It also includes an organic film located between the film layer containing the pixel row and the prism array, and the organic film is in contact with the aspherical cylindrical prism.

6. The display panel according to claim 5, characterized in that, The thickness of the organic film is H1 in a direction perpendicular to the plane of the substrate, where 15μm≤H1≤50μm.

7. The display panel according to claim 5, characterized in that, It includes a first region and a second region, wherein the distance between the second region and the edge of the display panel is greater than the distance between the first region and the edge of the display panel, and the plurality of pixel rows are located in the first region; The display panel further includes a cover plate and a support member. The prism array is disposed on the side of the cover plate facing the substrate, and the support member is located in the second region, between the cover plate and the organic film.

8. The display panel according to claim 1, characterized in that, The surface of the aspherical cylindrical prism includes a plane and a curved surface, and the plane is connected to the curved surface; The curved surface is located between the plane and the film layer containing the pixel row.

9. The display panel according to claim 5, characterized in that, The organic film has multiple grooves on the side facing the prism array, and the aspherical cylindrical prism is located in the grooves; The refractive index of the aspherical cylindrical prism is greater than that of the organic film.

10. The display panel according to claim 1, characterized in that, The focal point of the aspherical cylindrical prism is projected onto the substrate and is located within the projected sub-pixel onto the substrate.

11. The display panel according to claim 10, characterized in that, The focal point coincides with the center of the sub-pixel.

12. The display panel according to claim 10, characterized in that, The surface of the aspherical cylindrical prism includes a plane and a curved surface, and the plane is connected to the curved surface; In a direction perpendicular to the plane of the substrate, the distance between the vertex of the curved surface and the center of the sub-pixel is H2, and the distance between the focal point and the center of the sub-pixel is H3.

13. The display panel according to claim 12, characterized in that, The focal point is located between the film layer containing the pixel row and the film layer containing the prism array.

14. The display panel according to claim 1, characterized in that, The adjacent aspherical cylindrical prisms are in contact.

15. The display panel according to claim 1, characterized in that, It also includes a triangular prism extending along the first direction and along the second direction, the triangular prism being located between adjacent aspherical prisms.

16. The display panel according to claim 15, characterized in that, Along the second direction, the center of the sub-pixel, in the orthographic projection of the substrate, lies between the center of the aspherical cylindrical prism in the orthographic projection of the substrate and the center of the triangular prism in the orthographic projection of the substrate.

17. The display panel according to claim 16, characterized in that, The triangular prism includes a first surface, a second surface, and a third surface. Along the second direction, the first surface is parallel to the plane of the substrate, and the second surface is located between the aspherical prism and the third surface. The first surface and the second surface form a first angle, and the first surface and the third surface form a second angle, wherein the first angle is smaller than the second angle and the second angle is less than 90°.

18. The display panel according to claim 17, characterized in that, The first included angle is θ, the second included angle is α, and α > θ + 41.8°.

19. The display panel according to claim 17, characterized in that, It also includes a reflective metal layer disposed on the third surface.

20. The display panel according to claim 16, characterized in that, In a direction perpendicular to the plane of the substrate, the center of the sub-pixel overlaps with the aspherical cylindrical prism.

21. The display panel according to claim 15, characterized in that, The triangular prism and the aspherical prism are made of the same material.

22. A display device, characterized in that, Includes the display panel as described in any one of claims 1-20.

23. A vehicle, characterized in that, Includes the display device as described in claim 22, and a windshield.

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