Display panel and display device

Abstract

The invention provides a display panel and a display device, and relates to the technical field of display. A light adjusting component is arranged on one side, deviating from a substrate, of a light emitting element, so that a first light beam emitted by the light emitting element enters the light adjusting component through a light incident surface of the light adjusting component and forms a second light beam through a target light emergent surface of the light adjusting component; wherein the center line of the first light beam intersects with the center line of the second light beam, the purpose that light emitted by the light-emitting element is gathered at a specific angle through the light adjusting component is achieved, under the same driving current, the light-emitting brightness at the specific angle can be increased, and the effect of reducing power consumption is achieved.

Description

Technical Field

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

[0002] Micro Light Emitting Diode (Micro-LED) technology, that is, LED miniaturization and matrix technology, has advantages in good stability, life, and operating temperature. It also inherits the advantages of LED such as low power consumption, color saturation, fast response speed, and strong contrast. Micro-LEDs have higher brightness and lower power consumption, which makes micro-LEDs have great application prospects.

[0003] Micro light emitting diodes are light emitting elements. In order to improve the brightness of the light emitting elements at specific angles in certain application scenarios, the existing technology uses a method of increasing the driving current, but this method will increase the power consumption of the display panel. Summary of the invention

[0004] In view of the above problems, the present application provides a display panel and a display device to achieve light emission at a specific angle. The specific solution is as follows:

[0005] A first aspect of the present application provides a display panel, the display panel comprising:

[0006] substrate;

[0007] a plurality of light emitting elements located on one side of the substrate;

[0008] a light adjustment component located on a side of the light emitting element away from the substrate, wherein an orthographic projection of the light adjustment component on the substrate at least partially overlaps with an orthographic projection of the light emitting element on the substrate; the light adjustment component comprises a light incident surface and at least one light emitting surface, wherein the light emitting surface comprises a target light emitting surface;

[0009] Among them, the light-emitting element emits a first light beam; the first light beam is incident on the interior of the light adjustment component through the light incident surface, and forms a second light beam through the target light emitting surface; the center line of the first light beam intersects with the center line of the second light beam.

[0010] A second aspect of the present application provides a display device, which includes the display panel described above.

[0011] By means of the above technical scheme, the present application provides a display panel and a display device, wherein a light adjustment component is arranged on the side of the light-emitting element away from the substrate, so that a first light beam emitted by the light-emitting element is incident on the interior of the light adjustment component through the light incident surface of the light adjustment component, and forms a second light beam through the target light emitting surface of the light adjustment component; wherein the center line of the first light beam intersects with the center line of the second light beam, thereby achieving the purpose of focusing the light emitted by the light-emitting element to a specific angle through the light adjustment component, and under the same driving current, the light brightness at this specific angle can be increased, thereby achieving the effect of reducing power consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The above and other features, advantages and aspects of the embodiments of the present disclosure will become more apparent with reference to the following detailed description in conjunction with the accompanying drawings. Throughout the accompanying drawings, the same or similar reference numerals represent the same or similar elements. It should be understood that the drawings are schematic and the originals and elements are not necessarily drawn to scale.

[0013] Figure 1 A schematic diagram of the structure of a display panel provided by an embodiment of the present invention;

[0014] Figure 2 A schematic diagram of the structure of a light emitting element provided by an embodiment of the present invention;

[0015] Figure 3 A schematic diagram of a light pattern of a first light beam emitted by a light-emitting element provided in an embodiment of the present invention;

[0016] Figure 4 A schematic diagram of a light pattern of a second light beam formed by a target light emitting surface of a light adjustment component provided by an embodiment of the present invention;

[0017] Figure 5 A schematic diagram of the structure of a light adjustment component provided by an embodiment of the present invention;

[0018] Figure 6 A schematic structural diagram of another light adjustment component provided by an embodiment of the present invention;

[0019] Figure 7 A schematic structural diagram of another light adjustment component provided by an embodiment of the present invention;

[0020] Figure 8 A schematic diagram of the structure of another display panel provided by an embodiment of the present invention;

[0021] Fig. 9 A schematic diagram of the structure of another display panel provided by an embodiment of the present invention;

[0022] Fig.10 A schematic diagram of light type changes under different L2 / L1 values ​​provided by an embodiment of the present invention;

[0023] Fig.11 A schematic diagram of the structure of another display panel provided by an embodiment of the present invention;

[0024] Fig.12 A schematic diagram of the structure of another display panel provided by an embodiment of the present invention;

[0025] Fig.13 A schematic diagram of the structure of another display panel provided by an embodiment of the present invention;

[0026] Fig.14 A schematic top view of a display panel provided by an embodiment of the present invention;

[0027] Fig.15 A display schematic diagram of a display panel provided by an embodiment of the present invention applied to a head-up display in a vehicle;

[0028] Fig.16 A schematic diagram of a film layer structure corresponding to different display areas in a display panel provided by an embodiment of the present invention;

[0029] Fig.17 A schematic diagram of film layer structures corresponding to different display areas in another display panel provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0030] The embodiments of the present application are described below in conjunction with the drawings in the embodiments of the present application. The terms used in the implementation mode of the present application are only used to explain the specific embodiments of the present application, and are not intended to limit the present application. It is known to those skilled in the art that with the development of technology and the emergence of new scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

[0031] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] It should be noted that the directional words appearing in the present invention are based on the relative position relationship shown in the drawings and cannot be used as an absolute limitation to the present application.

[0033] Compared with liquid crystal display panels and organic light-emitting display panels, display panels that use micro-LEDs as light-emitting elements have advantages such as high brightness, wide color gamut, long life, and fast response. In the application of HUD (Head Up Display), thanks to the small size of the micro-LED display panel and the packaging structure that does not require a polarizing film, the transparency of the micro-LED display panel has a unique advantage compared to other types of display panels.

[0034] The HUD display design uses light output at a specific angle rather than vertically. In order to ensure the display effect of the HUD display, it is necessary to ensure that the light output at a specific angle has a certain brightness.

[0035] At present, the prior art adopts the method of increasing the driving current to increase the luminous brightness of the light-emitting element at a specific angle, but this method will increase the power consumption of the display panel. In other words, the prior art increases the luminous brightness of the light-emitting element at all angles by increasing the driving current, thereby achieving the purpose of increasing the luminous brightness of the light-emitting element at a specific angle. However, in the HUD display design, it is usually only the light emitted at a specific angle of the light-emitting element that is actually used to realize the luminous display, and the light at other angles of the light-emitting element is usually not used to realize the display function. Obviously, the solution of the prior art will bring about the problem of increasing the power consumption of the display panel.

[0036] Based on this, reference Figure 1 , Figure 1 A schematic diagram of the structure of a display panel provided in an embodiment of the present invention. The display panel provided in an embodiment of the present invention comprises: a substrate 11.

[0037] A plurality of light emitting elements 12 are located on one side of the substrate 11 .

[0038] A light adjustment component 13 is located on the side of the light emitting element 12 away from the substrate 11, and the orthographic projection of the light adjustment component 13 on the substrate 11 at least partially overlaps with the orthographic projection of the light emitting element 12 on the substrate 11; the light adjustment component 13 includes a light incident surface 14 and at least one light emitting surface 15, and the light emitting surface 15 includes a target light emitting surface 151.

[0039] The light emitting element 12 emits a first light beam; the first light beam is incident on the interior of the light adjustment component 13 through the light incident surface 14, and forms a second light beam through the target light emitting surface 151; the center line of the first light beam intersects with the center line of the second light beam.

[0040] Specifically, in the embodiment of the present invention, the substrate 11 mainly plays a supporting role, and other film layer structures and device structures are arranged on the substrate 11. The light-emitting element 12 is the main structure for realizing display in the display panel, and the light-emitting element 12 includes but is not limited to a micro light-emitting diode. The number of light-emitting elements 12 is multiple, and optionally, at least some of the different light-emitting elements 12 can be used to emit light of different colors to realize a colorful display of the display panel. When the light-emitting element 12 is a micro light-emitting diode, its size is less than 100μm.

[0041] Furthermore, the substrate 11 may include a plurality of film layers stacked together, such as Figure 1As shown, the substrate 11 may include a stacked substrate 16 and an array layer 17 , the array layer 17 is provided with a pixel driving circuit, and the pixel driving circuit is electrically connected to the light emitting element 12 to control whether the light emitting element 12 emits light.

[0042] refer to Figure 2 , Figure 2 A schematic diagram of the structure of a light-emitting element provided in an embodiment of the present invention. The light-emitting element 12 includes a first semiconductor layer 121, a light-emitting layer 122, and a second semiconductor layer 123, which are stacked. When one of the first semiconductor layer 121 and the second semiconductor layer 123 is a P-type semiconductor layer, the other semiconductor layer is an N-type semiconductor layer; the light-emitting layer 122 includes but is not limited to a multi-quantum well layer (Multi Quantum Well, MQW), and the light-emitting layer 122 is the main film layer for realizing light emission. The first semiconductor layer 121 and the second semiconductor layer 123 are used to drive and control the light-emitting layer 122 to realize the light-emitting function.

[0043] like Figure 2 As shown, the light-emitting element 12 also includes a first electrode 124 connected to the first semiconductor layer 121, and a second electrode 125 connected to the second semiconductor layer 123. The first electrode 124 and the second electrode 125 are both electrically connected to the pixel driving circuit. Under the control of the pixel driving circuit, the first electrode 124 and the second electrode 125 respectively receive corresponding power signals, thereby realizing control of whether the light-emitting layer 122 emits light or not.

[0044] In the embodiment of the present invention, the light adjustment component 13 is located on the side of the light emitting element 12 away from the substrate 11, and the orthographic projection of one light adjustment component 13 on the substrate 11 may overlap with the orthographic projection of only one light emitting element 12 on the substrate 11, or the orthographic projection of one light adjustment component 13 on the substrate 11 may overlap with the orthographic projections of multiple light emitting elements 12 on the substrate 11. In the embodiment of the present invention, the orthographic projection of one light adjustment component 13 on the substrate 11 overlaps with the orthographic projection of only one light emitting element 12 on the substrate 11 as an example for description.

[0045] refer to Figure 3 , Figure 3 A schematic diagram of a light pattern of a first light beam emitted by a light emitting element according to an embodiment of the present invention; Figure 4 , Figure 4 A schematic diagram of a light pattern of a second light beam formed by a target light emitting surface of a light adjustment component provided by an embodiment of the present invention. Figure 3 Medium light type 1 indicates that the first light beam is a green light beam, and light type 2 indicates that the first light beam is a blue light beam; Figure 4 The middle light type 3 indicates a light type in which the second light beam is a green light beam, and the light type 4 indicates a light type in which the second light beam is a blue light beam. Figure 3The center line W1 indicates that the first light beam is the center line of the green light beam. Figure 4 The center line W2 indicates that the second light beam is the center line of the green light beam.

[0046] It should be noted that, since the light emitted by the light emitting element 12 is divergent, the divergent direction is around the center line.

[0047] based on Figure 3 Taking the center line W1 as an example, the center line W1 is perpendicular to the plane where the light emitting layer 122 of the light emitting element 12 is located, and passes through the geometric center of the light emitting layer 122. In other words, the center line of the first light beam emitted by the light emitting element 12 is perpendicular to the plane where the light emitting layer 122 of the light emitting element 12 is located, and passes through the geometric center of the light emitting layer 122. At this time, it can be understood that the first light beam emitted in the forward direction of the light emitting element 12 is vertical light.

[0048] Among them, the light incident surface 14 of the light adjustment component 13 faces the side of the light emitting element 12. When the orthographic projection of the light adjustment component 13 on the substrate 11 at least partially overlaps with the orthographic projection of the light emitting element 12 on the substrate 11, the light incident surface 14 of the light adjustment component 13 will receive the first light beam emitted by the light emitting element 12, that is, the first light beam emitted by the light emitting element 12 will be incident on the interior of the light adjustment component 13 through the light incident surface 14 of the light adjustment component 13. The light beam incident on the interior of the light adjustment component 13 will pass through the target light emitting surface 151 of the light adjustment component 13 to form a second light beam, and the center line of the first light beam intersects with the center line of the second light beam. In other words, the center line of the second light beam emitted after adjustment by the light adjustment component 13 is in a non-perpendicular state to the plane where the light emitting layer 122 is located, so as to achieve Figure 3 Medium light adjustment to Figure 4 The purpose of the medium light type is that the second light beam emitted after adjustment by the light adjustment component 13 is non-vertical light, that is, the light emitted by the light-emitting element 12 is focused to a specific angle by the light adjustment component 13. Under the same driving current, the luminous brightness at this specific angle can be increased, thereby achieving the effect of reducing power consumption.

[0049] In an optional embodiment of the present invention, reference Figure 5 , Figure 5 A schematic diagram of a light adjustment component provided by an embodiment of the present invention: The light adjustment component 13 comprises: a first surface 131 and a second surface 132 arranged opposite to each other along a first direction X, wherein the first direction X is parallel to the plane where the display panel is located.

[0050] A third surface 133 , a fourth surface 134 and a fifth surface 135 are sequentially arranged around the first surface 131 and the second surface 132 .

[0051] The third surface 133 and the fourth surface 134 are planes. The third surface 133 faces the light emitting element 12 , and the plane where the fourth surface 134 is located intersects with the plane where the display panel is located.

[0052] The fifth surface 135 is a curved surface, and the curved surface is protruded in a direction away from the substrate 11 .

[0053] The third surface 133 is the light incident surface 14 , and the fifth surface 135 is the target light emitting surface 151 .

[0054] Specifically, in the embodiment of the present invention, the shape of the light-adjusting component is similar to that of a quarter cylinder. Since the light-emitting element 12 can realize 360° light emission, the light-adjusting component 13 having a shape similar to a quarter cylinder has light-emitting surfaces 15 except for the light-entering surface 14. That is, the light-adjusting component 13 includes four light-emitting surfaces 15, namely the first surface 131, the second surface 132, the fourth surface 134 and the fifth surface 135; and a light-entering surface 14, namely the third surface 133. The fifth surface 135 is a curved surface, which is convexly arranged in a direction away from the substrate 11. Based on the light-adjusting component 13 having a shape similar to a quarter cylinder, as shown in FIG. Figure 1 As shown, the cross-sectional structure of the light adjusting component 13 can be shaped like an asymmetric convex lens, so that the light adjusting component 13 can have a certain focusing effect at a specific angle, thereby achieving the purpose of focusing the light emitted by the light emitting element 12 to a specific angle through the fifth surface 135. Under the same driving current, the luminous brightness at this specific angle can be increased, thereby achieving the effect of reducing power consumption.

[0055] In an optional embodiment of the present invention, reference Figure 6 , Figure 6 The light adjustment component 13 includes a sixth surface 136 , a seventh surface 137 and an eighth surface 138 .

[0056] The sixth surface 136 and the seventh surface 137 are planes. The sixth surface 136 faces the light emitting element 12 . The plane where the seventh surface 137 is located intersects with the plane where the display panel is located.

[0057] The eighth surface 138 is a curved surface that protrudes in a direction away from the substrate 11 .

[0058] The sixth surface 136 is the light incident surface 14 , and the eighth surface 138 is the target light emitting surface 151 .

[0059] Specifically, in the embodiment of the present invention, the shape of the light adjustment component 13 is similar to that of a quarter sphere. Since the light emitting element 12 can emit light at 360°, the light adjustment component 13 having a shape similar to that of a quarter sphere has light exiting surfaces 15 except for the light incident surface 14. That is, the light adjustment component 13 includes two light exiting surfaces 15, namely the seventh surface 137 and the eighth surface 138; and one light incident surface 14, namely the sixth surface 136. The eighth surface 138 is a curved surface, which is convexly arranged in a direction away from the substrate 11. Based on the light adjustment component 13 having a shape similar to that of a quarter sphere, as shown in FIG. Figure 1 As shown, the cross-sectional structure of the light adjusting component 13 can also be made to be similar to an asymmetric convex lens, so that the light adjusting component 13 can have a certain focusing effect at a specific angle, thereby achieving the purpose of focusing the light emitted by the light emitting element 12 to a specific angle through the eighth surface 138. Under the same driving current, the luminous brightness at this specific angle can be increased, thereby achieving the effect of reducing power consumption.

[0060] In an optional embodiment of the present invention, reference Figure 7 , Figure 7 A schematic diagram of the structure of another light adjustment component provided in an embodiment of the present invention, referring to Figure 8 , Figure 8 The light adjustment component 13 includes a ninth surface 139 and a tenth surface 140 .

[0061] The ninth surface 139 is a plane and faces the light emitting element 12 .

[0062] The tenth surface 140 is an arc surface, which is protruding in the direction away from the substrate 11; the line connecting the most convex point of the arc surface and the geometric center of the ninth surface 139 forms a virtual straight line K1, and the virtual straight line K1 intersects with the target straight line K2, and the target straight line K2 is perpendicular to the plane where the ninth surface 139 is located.

[0063] The ninth surface 139 is the light incident surface 14 , and the tenth surface 140 is the target light emitting surface 151 .

[0064] Specifically, in the embodiment of the present invention, the shape of the light adjustment component 13 is similar to that of a plano-convex lens, but compared with a conventional symmetrical plano-convex lens, the structure of the light adjustment component 13 is asymmetrically designed, that is, the line connecting the most convex point of the arc surface and the geometric center of the ninth surface 139 is not perpendicular to the plane where the ninth surface 139 is located. Based on the light adjustment component 13 with a shape similar to an asymmetric plano-convex lens, as shown in FIG. Figure 8As shown, the cross-sectional structure of the light adjusting component 13 can also be made to be similar to an asymmetric convex lens, so that the light adjusting component 13 can have a certain focusing effect at a specific angle, thereby achieving the purpose of focusing the light emitted by the light-emitting element to a specific angle through the tenth surface. Under the same driving current, the luminous brightness at this specific angle can be increased, thereby achieving the effect of reducing power consumption.

[0065] In an optional embodiment of the present invention, reference Fig. 9 , Fig. 9 A schematic diagram of the structure of another display panel provided by an embodiment of the present invention: The light emitting element comprises a first light emitting element 12a and a second light emitting element 12b.

[0066] The first light emitting element 12a emits a first color light, and the wavelength of the first color light is λ1.

[0067] The second light emitting element 12 b emits a second color light, and the wavelength of the second color light is λ2.

[0068] Among them, λ1>λ2.

[0069] The light adjustment component 13 includes a first light adjustment component 13a disposed corresponding to the first light emitting element 12a, and a second light adjustment component 13b disposed corresponding to the second light emitting element 12b.

[0070] Specifically, in the embodiment of the present invention, the first light emitting element 12a is a light emitting element for emitting red light, and the second light emitting element 12b is a light emitting element for emitting green light.

[0071] In an optional embodiment of the present invention, Fig. 9 As shown, the width of the third surface 133 in the second direction Y is L1, and the second direction Y is perpendicular to the first direction X.

[0072] A maximum distance between the fifth surface 135 and the substrate 11 is L2.

[0073] The ratio of L2 / L1 corresponding to the first light adjustment component 13a is greater than the ratio of L2 / L1 corresponding to the second light adjustment component 13b.

[0074] refer to Fig.10 , Fig.10 A schematic diagram of light type changes under different L2 / L1 values ​​provided by an embodiment of the present invention. Fig.10 As shown, the larger the ratio of L2 / L1 is, the better the focusing effect at a specific angle is, that is, more light can be gathered at a specific angle.

[0075] Specifically, in the embodiment of the present invention, since the light-emitting element for emitting red light and the light-emitting element for emitting green light have lower luminous efficiency under the same driving current, the light-emitting element for emitting red light is differentially designed for the light-emitting elements emitting light of different colors in the embodiment of the present application, so that the ratio of L2 / L1 corresponding to the first light adjustment component 13a is greater than the ratio of L2 / L1 corresponding to the second light adjustment component 13b, which is equivalent to making the fifth surface 135 corresponding to the first light adjustment component 13a more protruding than the fifth surface 135 corresponding to the second light adjustment component 13b. It can also be understood that, to a certain extent, the curvature of the fifth surface 135 corresponding to the first light adjustment component 13a is greater than the curvature of the fifth surface 135 corresponding to the second light adjustment component 13b, so that the light emitted by the first light-emitting element 12a can gather more light to a specific angle through the fifth surface 135 corresponding to the first light adjustment component 13a, so that the luminous brightness of different colors of light at a specific angle is close, thereby improving the display effect of the display panel.

[0076] In an optional embodiment of the present invention, reference Fig.11 , Fig.11 A schematic diagram of the structure of another display panel provided in an embodiment of the present invention. The fourth surface 134 of the first light adjustment component 13a and the plane where the substrate 11 is located have a first angle β1; the fourth surface 134 of the second light adjustment component 13b and the plane where the substrate 11 is located have a second angle β2; the first angle β1 is less than 90°, and the second angle β2 is equal to 90°.

[0077] The fourth surface 134 of the first light adjustment component 13 a is provided with a reflective layer 19 for reflecting the light incident on the fourth surface 134 to the inside of the first light adjustment component 13 a .

[0078] Specifically, in the embodiment of the present invention, since the light-emitting element for emitting red light and the light-emitting element for emitting green light have lower luminous efficiency under the same driving current, the light-emitting element for emitting red light is differentially designed for the light-emitting elements emitting light of different colors in the embodiment of the present application, so that the fourth surface 134 corresponding to the first light-adjusting component 13a is tilted, and a reflective layer 19 is arranged on the fourth surface 134, at least part of the light emitted by the first light-emitting element 12a will reach the reflective layer 19, be reflected by the reflective layer 19 and change the propagation direction of the light, and reflect the light incident on the fourth surface 134 to the inside of the first light-adjusting component 13a, and at least part of the light will be emitted from the fifth surface 135, so that the light emitted by the first light-emitting element 12a can gather more light to a specific angle through the fifth surface 135 corresponding to the first light-adjusting component 13a, so that the luminous brightness of light of different colors at a specific angle is close, thereby improving the display effect of the display panel.

[0079] The material of the reflective layer 19 includes but is not limited to materials with a reflective effect such as white glue; further, the material of the white glue may include at least one of titanium oxide and zinc oxide.

[0080] It should be noted that Fig. 9 and Fig.11 The technical solution shown can also be improved at the same time to maximize the light emitted by the first light-emitting element 12a to gather more light toward a specific angle through the fifth surface 135 corresponding to the first light adjustment component 13a, so that the luminous brightness of different colors of light at a specific angle is close, thereby improving the display effect of the display panel.

[0081] In an optional embodiment of the present invention, reference Fig.12 , Fig.12 This is a schematic diagram of the structure of another display panel provided by an embodiment of the present invention. The light emitting element 12 further includes a third light emitting element 12c.

[0082] The third light emitting element 12c emits a third color light, and the wavelength of the third color light is λ3.

[0083] Among them, λ1>λ2>λ3.

[0084] The light adjustment component 13 further includes a third light adjustment component 13c disposed corresponding to the third light emitting element 12c.

[0085] Specifically, in the embodiment of the present invention, the first light-emitting element 12a is used as a light-emitting element for emitting red light, the second light-emitting element 12b is used as a light-emitting element for emitting green light, and the third light-emitting element 12c is used as a light-emitting element for emitting blue light. Considering that under the same driving current, the luminous efficiency of the light-emitting element for emitting green light and the light-emitting element for emitting blue light are relatively close, the third light adjustment component 13c can be designed in the same way as the second light adjustment component 13b, so as to achieve the purpose of simplifying the preparation process.

[0086] Obviously, in order to achieve a higher display effect, the third light adjustment component 13c can also be designed more finely and differently from the second light adjustment component 13b.

[0087] In an optional embodiment of the present invention, reference Fig.13 , Fig.13 This is a schematic diagram of the structure of another display panel provided by an embodiment of the present invention. The display panel further comprises: an encapsulation layer 20 located on a side of the light adjustment component 13 away from the substrate 11 .

[0088] The encapsulation layer 20 includes a first encapsulation layer 20a disposed corresponding to the first light emitting element 12a, and a second encapsulation layer 20b disposed corresponding to the second light emitting element 12b.

[0089] The refractive index of the first light adjustment member 13a is n1, the refractive index of the second light adjustment member 13b is n2, the refractive index of the first encapsulation layer 20a is n3, and the refractive index of the second encapsulation layer 20b is n4.

[0090] Among them, (n1-n3)>(n2-n4).

[0091] Specifically, in the embodiment of the present invention, the refractive index of the light adjustment component 13 is greater than the refractive index of the encapsulation layer 20. The first light-emitting element 12a and the second light-emitting element 12b can be encapsulated at the same time using the same material, or they can be encapsulated separately using different materials. When the same material is used for encapsulation at the same time, the relationship n3=n4 exists; when different materials are used for encapsulation separately, the relationship n3≠n4 may exist. However, no matter which method is used, the relationship (n1-n3)>(n2-n4) must be satisfied, that is, the refractive index of the first light adjustment component 13a is greater than the refractive index of the second light adjustment component 13b.

[0092] As mentioned above, since the light-emitting element for emitting red light and the light-emitting element for emitting green light have lower luminous efficiency under the same driving current, the refractive index of the light adjustment components corresponding to the light-emitting elements emitting different colors of light are differentiated in the embodiment of the present application, so that the refractive index of the first light adjustment component 13a is greater than the refractive index of the second light adjustment component 13b, so as to achieve the purpose of adjusting the refraction angle of light of different colors, so that the light emitted by the first light-emitting element 12a can gather more light to a specific angle through the first light adjustment component 13a, so that the luminous brightness of light of different colors at a specific angle is close, thereby improving the display effect of the display panel.

[0093] In an optional embodiment of the present invention, Figure 1 , Figure 8 , Fig. 9 , Fig.11 , Fig.12 as well as Fig.13 As shown, the display panel also includes:

[0094] The planarization layer 18 is located on the side of the light adjustment component 13 facing the substrate 11 , and the planarization layer 18 wraps the light emitting element 12 .

[0095] Specifically, in the embodiment of the present invention, the planarization layer 18 can separate the light adjustment component 13 from the light emitting element 12 in the thickness direction of the substrate 11, and the preparation of the planarization layer 18 is usually before the light adjustment component 13. Therefore, the planarization layer 18 can provide a flat surface for the preparation of the light adjustment component 13, thereby reducing the difficulty of preparing the light adjustment component 13 and helping to improve the relative position reliability of the light adjustment component 13 compared to the light emitting element 12.

[0096] Since the light emitted by the light emitting element 12 needs to pass through the planarization layer 18 , the material contained in the planarization layer 18 needs to make the planarization layer 18 have a certain light transmittance to meet the light output requirements of the display panel.

[0097] The refractive index of the encapsulation layer 20 is n5, the refractive index of the planarization layer 18 is n6, and the refractive index of the light adjustment component 13 is n7; there is a relationship of n7>n5>n6.

[0098] Since the light emitted by the light emitting element 12 will first pass through the planarization layer 18, then pass through the light adjustment component 13, and then pass through the encapsulation layer 20 to be emitted, on this basis, the refractive indexes of the encapsulation layer 20, the planarization layer 18, and the light adjustment component 13 are designed to satisfy the relationship of n7>n5>n6, so that the light emitted by the light emitting element 12 will first enter the planarization layer 18 with a smaller refractive index, then propagate to the light adjustment component 13 with a larger refractive index, and finally propagate to the encapsulation layer 20 with a smaller refractive index. In this way, due to the difference in refractive index between the planarization layer 18 and the light adjustment component 13, and the difference in refractive index between the light adjustment component 13 and the encapsulation layer 20, it is helpful to make the light emitted by the light emitting element 12 gather more light at a specific angle through the light adjustment component 13, thereby improving the display effect of the display panel.

[0099] In general, by arranging a low-refractive-index flattening layer 18, a high-refractive-index light-adjusting component 13, and a low-refractive-index packaging layer 20 above the light-emitting element 12, the light emitted by the light-emitting element 12 is refracted multiple times, so that the forward light emitted by the light-emitting element 12 is gathered at a specific angle, thereby increasing the light output at a specific angle. Under the same driving current, the light brightness at this specific angle can be increased, thereby achieving the effect of reducing power consumption.

[0100] In an optional embodiment of the present invention, reference Fig.14 , Fig.14 A schematic top view of a display panel provided by an embodiment of the present invention; Fig.15 , Fig.15 A display panel provided by an embodiment of the present invention is applied to a vehicle head-up display; Fig.16 , Fig.16 A schematic diagram of a film layer structure corresponding to different display areas in a display panel provided by an embodiment of the present invention. The display panel includes a first display area AA1 and a second display area AA2.

[0101] The light emitting element 12 includes a first light emitting element 12a, and the first light emitting element 12a includes a first A light emitting element 12a1 located in the first display area AA1, and a first B light emitting element 12a2 located in the second display area AA2.

[0102] The light adjustment component 13 includes a first A light adjustment component 13a1 disposed corresponding to the first A light emitting element 12a1, and a first B light adjustment component 13a2 disposed corresponding to the first B light emitting element 12a2.

[0103] Specifically, in the embodiment of the present invention, the first display area AA1 can display information such as the vehicle dashboard, vehicle speed and cruise control, and the second display area AA2 can display information such as assisted driving and caller ID. Fig.15 As shown, the first display area AA1 displays an image of a vehicle speed of 65, and the second display area AA2 displays an image of assisted driving, wherein the image of assisted driving includes an image of vehicle spacing and path planning.

[0104] In order to improve driving safety, the importance of vehicle speed information is much greater than that of auxiliary driving information, that is, the importance of the information displayed in the first display area AA1 is much greater than that of the information displayed in the second display area AA2. Therefore, in the embodiment of the present application, the light adjustment components 13 corresponding to the light emitting elements 12 emitting the same color light in different display areas are designed differently to achieve differentiated display in different display areas.

[0105] like Fig.16 As shown, the width of the third surface 134 in the second direction Y is L1, and the second direction Y is perpendicular to the first direction X.

[0106] A maximum distance between the fifth surface 135 and the substrate 11 is L2.

[0107] The ratio of L2 / L1 corresponding to the first A-light adjusting component 13a1 is greater than the ratio of L2 / L1 corresponding to the first B-light adjusting component 13a2.

[0108] like Fig.10 As shown, the larger the ratio of L2 / L1 is, the better the focusing effect at a specific angle is, that is, more light can be gathered at a specific angle.

[0109] Specifically, in the embodiment of the present invention, the light adjustment components 13 corresponding to the light emitting elements 12 emitting the same color light in different display areas are designed differently, so that the ratio of L2 / L1 corresponding to the first A light adjustment component 13a1 is greater than the ratio of L2 / L1 corresponding to the first B light adjustment component 13a2, which is equivalent to making the fifth surface 135 corresponding to the first A light adjustment component 13a1 more protruding than the fifth surface 135 corresponding to the first B light adjustment component 13a2. It can also be understood that to a certain extent, the fifth surface 135 corresponding to the first A light adjustment component 13a1 is The curvature of 135 is greater than the curvature of the fifth surface 135 corresponding to the first B light adjusting component 13a2, so that the light emitted by the first A light emitting element 12a1 located in the first display area AA1 can gather more light toward a specific angle through the fifth surface 135 corresponding to the first A light adjusting component 13a1, thereby improving the display brightness of the first display area AA1, and making the display brightness of the second display area AA2 lower than the display brightness of the first display area AA1, thereby making the image displayed in the first display area AA1 more eye-catching and easier to be noticed by the driver, thereby improving driving safety.

[0110] For example, Fig.10 As shown, the ratio of L2 / L1 in the first A light adjustment component 13a1 of the first display area AA1 can be 1 / 1, which meets the display requirements of high brightness and clear picture; the ratio of L2 / L1 in the first B light adjustment component 13a2 of the second display area AA2 can be 0.58 / 1, which meets the display requirements of low brightness and slightly divergent picture.

[0111] In an optional embodiment of the present invention, reference Fig.17 , Fig.17 A schematic diagram of a film structure corresponding to different display areas in another display panel provided in an embodiment of the present invention. The fourth surface 134 in the first A light adjustment component 13a1 has a first angle β1 with the plane where the substrate 11 is located; the fourth surface 134 in the first B light adjustment component 13a2 has a second angle β2 with the plane where the substrate 11 is located; the first angle β1 is less than 90°, and the second angle β2 is equal to 90°.

[0112] The fourth surface 134 of the first A-light adjusting component 13a1 is provided with a reflective layer 19 for reflecting the light incident on the fourth surface 134 to the inside of the first A-light adjusting component 13a1.

[0113] Specifically, in the embodiment of the present invention, a differentiated design is performed for the light adjustment components 13 corresponding to the light emitting elements 12 emitting the same color light in different display areas, so that the fourth surface 134 corresponding to the first A light adjustment component 13a1 is tilted, and a reflective layer 19 is arranged on the fourth surface 134, at least part of the light emitted by the first A light emitting element 12a1 will reach the reflective layer 19, be reflected by the reflective layer 19 and change the propagation direction of the light, and reflect the light incident on the fourth surface 134 to the inside of the first A light adjustment component 13a1, and at least part of the light will be emitted from the fifth surface 135, so that the light emitted by the first A light emitting element 12a1 can gather more light at a specific angle through the fifth surface 135 corresponding to the first A light adjustment component 13a1, thereby improving the display brightness of the first display area AA1, and making the display brightness of the second display area AA2 lower than the display brightness of the first display area AA1, thereby making the image displayed in the first display area AA1 more eye-catching and easier to be noticed by the driver, thereby improving driving safety.

[0114] It should be noted that Fig.16 and Fig.17The technical solution shown can also be improved at the same time, so as to maximize the light emitted by the first light-emitting element 12a1 to gather more light toward a specific angle through the fifth surface 135 corresponding to the first light adjustment component 13a1, thereby improving the display brightness of the first display area AA1, and making the display brightness of the second display area AA2 lower than the display brightness of the first display area AA1, thereby making the image displayed in the first display area AA1 more eye-catching and easier to be noticed by the driver, thereby improving driving safety.

[0115] Based on the above embodiments of the present invention, accordingly, the embodiments of the present application also provide a display device, which includes the display panel described in the above embodiments of the present application. The display device can be a display device with display function such as a vehicle-mounted head-up display screen.

[0116] The display panel and display device provided by the present invention are introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

[0117] It should be noted that each embodiment in this specification is described in a progressive manner, and each embodiment focuses on the differences from other embodiments, and the same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0118] It should also be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device that includes a series of elements is inherent to the elements, or also includes elements inherent to these processes, methods, articles or devices. In the absence of further restrictions, the elements defined by the sentence "including a..." do not exclude the presence of other identical elements in the process, method, article or device that includes the elements.

[0119] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A display panel, characterized in that: The display panel comprises: substrate; a plurality of light emitting elements located on one side of the substrate; a light adjustment component located on a side of the light emitting element away from the substrate, wherein an orthographic projection of the light adjustment component on the substrate at least partially overlaps with an orthographic projection of the light emitting element on the substrate; the light adjustment component comprises a light incident surface and at least one light emitting surface, wherein the light emitting surface comprises a target light emitting surface; Among them, the light-emitting element emits a first light beam; the first light beam is incident on the interior of the light adjustment component through the light incident surface, and forms a second light beam through the target light emitting surface; the center line of the first light beam intersects with the center line of the second light beam.

2. The display panel according to claim 1, characterized in that: The light adjustment component comprises: a first surface and a second surface arranged opposite to each other along a first direction, wherein the first direction is parallel to the plane where the display panel is located; A third surface, a fourth surface and a fifth surface are sequentially arranged around the first surface and the second surface; The third surface and the fourth surface are planes, the third surface faces the light emitting element, and the plane where the fourth surface is located intersects with the plane where the display panel is located; The fifth surface is a curved surface, and the curved surface is convexly arranged in a direction away from the substrate; Wherein, the third surface is the light incident surface, and the fifth surface is the target light emitting surface.

3. The display panel according to claim 1, characterized in that: The light adjustment component includes: a sixth surface, a seventh surface and an eighth surface; The sixth surface and the seventh surface are planes, the sixth surface faces the light emitting element, and the plane where the seventh surface is located intersects with the plane where the display panel is located; The eighth surface is a curved surface, and the curved surface is convexly arranged in a direction away from the substrate; Wherein, the sixth surface is the light incident surface, and the eighth surface is the target light emitting surface.

4. The display panel according to claim 1, characterized in that: The light adjustment component includes: a ninth surface and a tenth surface; The ninth surface is a plane and faces the light emitting element; The tenth surface is a curved surface, and the curved surface is convexly arranged in a direction away from the substrate; a line connecting the most convex point of the curved surface and the geometric center of the ninth surface forms a virtual straight line, and the virtual straight line intersects with a target straight line, and the target straight line is perpendicular to the plane where the ninth surface is located; Among them, the ninth surface is the light incident surface, and the tenth surface is the target light emitting surface.

5. The display panel according to claim 2, characterized in that: The light emitting element comprises a first light emitting element and a second light emitting element; The first light emitting element emits a first color light, and the wavelength of the first color light is λ1; The second light emitting element emits a second color light, and the wavelength of the second color light is λ2; Among them, λ1>λ2; The light adjustment component includes a first light adjustment component disposed corresponding to the first light emitting element, and a second light adjustment component disposed corresponding to the second light emitting element.

6. The display panel according to claim 5, characterized in that: The width of the third surface in a second direction is L1, and the second direction is perpendicular to the first direction; The maximum distance between the fifth surface and the substrate is L2; The ratio of L2 / L1 corresponding to the first light adjustment component is greater than the ratio of L2 / L1 corresponding to the second light adjustment component.

7. The display panel according to claim 5, characterized in that: A first angle is formed between the fourth surface of the first light adjustment component and the plane where the substrate is located; a second angle is formed between the fourth surface of the second light adjustment component and the plane where the substrate is located; the first angle is less than 90°, and the second angle is equal to 90°; The fourth surface of the first light adjustment component is provided with a reflective layer for reflecting the light incident on the fourth surface to the inside of the first light adjustment component.

8. The display panel according to claim 7, characterized in that: The material of the reflective layer is white glue.

9. The display panel according to claim 5, characterized in that: The display panel further includes: an encapsulation layer located on a side of the light adjustment component away from the substrate.

10. The display panel according to claim 9, characterized in that: The encapsulation layer comprises a first encapsulation layer arranged corresponding to the first light-emitting element, and a second encapsulation layer arranged corresponding to the second light-emitting element; The refractive index of the first light adjustment member is n1, the refractive index of the second light adjustment member is n2, the refractive index of the first encapsulation layer is n3, and the refractive index of the second encapsulation layer is n4; Among them, (n1-n3)>(n2-n4).

11. The display panel according to claim 9, characterized in that: The display panel further includes: A planarization layer is located on a side of the light adjustment component facing the substrate, and the planarization layer wraps the light emitting element.

12. The display panel according to claim 11, characterized in that: The refractive index of the encapsulation layer is n5, the refractive index of the planarization layer is n6, and the refractive index of the light adjustment component is n7; Among them, n7>n5>n6.

13. The display panel according to claim 2, characterized in that: The display panel includes a first display area and a second display area; The light emitting element comprises a first light emitting element, wherein the first light emitting element comprises a first A light emitting element located in the first display area, and a first B light emitting element located in the second display area; The light adjustment component includes a first A light adjustment component arranged corresponding to the first A light emitting element, and a first B light adjustment component arranged corresponding to the first B light emitting element.

14. The display panel according to claim 13, characterized in that: The width of the third surface in a second direction is L1, and the second direction is perpendicular to the first direction; The maximum distance between the fifth surface and the substrate is L2; The ratio of L2 / L1 corresponding to the first A light adjustment component is greater than the ratio of L2 / L1 corresponding to the first B light adjustment component.

15. The display panel according to claim 13 or 14, characterized in that: The fourth surface of the first A light adjusting component and the plane where the substrate is located have a first angle; the fourth surface of the first B light adjusting component and the plane where the substrate is located have a second angle; the first angle is less than 90°, and the second angle is equal to 90°; The fourth surface of the first A light adjusting component is provided with a reflective layer for reflecting light incident on the fourth surface to the interior of the first A light adjusting component.

16. A display device, characterized in that: The display device comprises the display panel according to any one of claims 1-15.

Images