Light-emitting device and display panel

Abstract

The embodiment of the invention discloses a light-emitting device and a display panel, the light-emitting device comprises at least two light-emitting units, each light-emitting unit comprises at least one nano light-emitting diode, one lens is configured to at least correspondingly converge the light-emitting angle of one light-emitting unit, and the light-emitting angle of the lens is larger than the light-emitting angle of the light-emitting unit on the plane perpendicular to the surface of a substrate. In one lens and the correspondingly converged light-emitting unit, the center line of at least one light-emitting unit deviates from the main optical axis of the lens. According to the light-emitting device and the display panel, more nanometer light-emitting diodes are arranged to improve the light-emitting brightness of the light-emitting device, and the lens is adopted to converge the light-emitting rays of the light-emitting unit, so that the effect of improving the front-view light-emitting brightness can be achieved; in addition, the center line of the light-emitting unit deviates from the main optical axis of the lens, the light-emitting angle of the light-emitting unit is prevented from being excessively converged, and the light-emitting brightness of the side view angle can be compensated.

Description

Technical Field

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

[0002] Micro-LEDs have the technical advantages of high brightness, high transmittance and high contrast, and have attracted more and more attention in recent years.

[0003] In the process of research and practice of the prior art, the inventors of the present application found that the light emission angle of the micro light emitting diode is relatively large, and the light emission brightness of a single micro light emitting diode is limited. Summary of the invention

[0004] The embodiments of the present application provide a light-emitting device and a display panel, which can improve the front-view light brightness and appropriately compensate for the side-view brightness.

[0005] The present application provides a light emitting device, which includes:

[0006] substrate;

[0007] At least two light-emitting units are arranged on the substrate at intervals, and each of the light-emitting units includes at least one nano-light-emitting diode;

[0008] an encapsulation layer, configured to encapsulate the at least two light-emitting units;

[0009] at least one lens, configured to converge the light emission angle of the light emitting unit, the at least one lens being arranged on a side of the at least two light emitting units away from the substrate;

[0010] Among them, one of the lenses is configured to converge the light output angle of at least one of the light-emitting units. On a plane perpendicular to the surface of the substrate, the center line of at least one of the light-emitting units that converges with the lens deviates from the main optical axis of the lens.

[0011] Optionally, in some embodiments of the present application, at least two of the light-emitting units include a first light-emitting unit and a second light-emitting unit, and at least one of the lens covers includes a first lens and a second lens, the first lens covers the first light-emitting unit, and the second lens covers the second light-emitting unit;

[0012] On a plane perpendicular to the surface of the substrate, a center line of the first light-emitting unit deviates from a principal optical axis of the first lens, a distance between the principal optical axis of the first lens and the principal optical axis of the second lens is a first distance, a distance between the center line of the first light-emitting unit and the center line of the second light-emitting unit is a second distance, and the second distance is greater than or equal to the first distance.

[0013] Optionally, in some embodiments of the present application, on a plane perpendicular to the surface of the substrate, a center line of the first light-emitting unit is set on a side of the main optical axis of the first lens away from the second light-emitting unit, and a center line of the second light-emitting unit is set on a side of the main optical axis of the second lens away from the first light-emitting unit.

[0014] Optionally, in some embodiments of the present application, on a plane perpendicular to the surface of the substrate, a center line of the first light-emitting unit is arranged on a side of the principal optical axis of the first lens away from the second light-emitting unit; a center line of the second light-emitting unit is arranged on a side of the principal optical axis of the second lens close to the first light-emitting unit, or a center line of the second light-emitting unit coincides with the principal optical axis of the second lens.

[0015] Optionally, in some embodiments of the present application, the thickness of the first lens is different from the thickness of the second lens; and / or the aperture of the first lens is different from the aperture of the second lens.

[0016] Optionally, in some embodiments of the present application, at least two of the light-emitting units include a first light-emitting unit and a second light-emitting unit, and the lens covers the first light-emitting unit and the second light-emitting unit;

[0017] The center line of the first light emitting unit is located on a side of the main optical axis of the lens away from the second light emitting unit, and the center line of the second light emitting unit is located on a side of the main optical axis of the lens away from the first light emitting unit.

[0018] Optionally, in some embodiments of the present application, at least two of the light-emitting units include a first light-emitting unit, a second light-emitting unit, and a third light-emitting unit, and the lens covers the first light-emitting unit, the second light-emitting unit, and the third light-emitting unit;

[0019] The center line of the third light-emitting unit coincides with the main optical axis of the lens, the center line of the first light-emitting unit is located on a side of the third light-emitting unit away from the second light-emitting unit, and the center line of the second light-emitting unit is located on a side of the third light-emitting unit away from the first light-emitting unit.

[0020] Optionally, in some embodiments of the present application, the first light-emitting unit and the second light-emitting unit are each configured to emit light independently.

[0021] Optionally, in some embodiments of the present application, the light-emitting device further comprises a color conversion layer, a reflective layer and a light-shielding layer, the encapsulation layer is provided with an opening, the at least two light-emitting units are provided in the opening, the reflective layer covers a portion of the substrate corresponding to the opening and a side wall of the opening, the color conversion layer is provided in the opening and covers the at least two light-emitting units, the light-shielding layer is provided on a side of the encapsulation layer away from the substrate, and the light-shielding layer is provided around the periphery of the opening;

[0022] In the light emitting device viewed from a top perspective, the edge portion of the lens is overlapped with the light shielding layer, or the edge line of the lens is located in the inner circle of the light shielding layer.

[0023] Optionally, in some embodiments of the present application, based on the surface of the substrate close to the reflective layer, the height of the portion of the reflective layer covering the side wall of the opening is greater than the height of the color conversion layer.

[0024] Correspondingly, an embodiment of the present application further provides a display panel, which includes a driving substrate and a light-emitting device as described in any one of the above embodiments, wherein the light-emitting device is arranged on the driving substrate.

[0025] In the light-emitting device and display panel of the embodiments of the present application, the light-emitting device includes at least two light-emitting units, each of the light-emitting units includes at least one nano-light-emitting diode, and a lens is configured to converge the light output angle of at least one of the light-emitting units. On a plane perpendicular to the surface of the substrate, the center line of at least one of the light-emitting units that converge with the lens deviates from the main optical axis of the lens.

[0026] The light-emitting device and display panel of the embodiment of the present application increase the light output brightness of the light-emitting device by disposing more nano-light-emitting diodes, and use a lens to converge the light output of the light-emitting unit, thereby improving the brightness of the light when viewed from the front. In addition, the center line of the light-emitting unit is deviated from the main optical axis of the lens to avoid excessive convergence of the light output angle of the light-emitting unit, thereby compensating for the brightness of the light when viewed from the side. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the first structure of the light-emitting device provided in the embodiment of the present application;

[0028] Figure 2 is a schematic diagram of the back side of the substrate of the light-emitting device provided in an embodiment of the present application;

[0029] Figure 3 is a schematic structural diagram of a nano diode of a light emitting device provided in an embodiment of the present application;

[0030] Figure 4is a schematic diagram of a second structure of a light-emitting device provided in an embodiment of the present application;

[0031] Figure 5 This is a third structural schematic diagram of the light-emitting device provided in the embodiment of the present application;

[0032] Figure 6 is a fourth structural schematic diagram of a light-emitting device provided in an embodiment of the present application;

[0033] Figure 7 is a fifth structural schematic diagram of the light emitting device provided in the embodiment of the present application;

[0034] Figure 8 is a sixth structural schematic diagram of a light-emitting device provided in an embodiment of the present application;

[0035] Fig. 9 is a seventh structural schematic diagram of a light-emitting device provided in an embodiment of the present application;

[0036] Fig.10 This is a schematic diagram of the eighth structure of the light-emitting device provided in the embodiment of the present application;

[0037] Fig.11 is a ninth structural schematic diagram of a light-emitting device provided in an embodiment of the present application;

[0038] Fig.12 It is a schematic diagram of the structure of the display panel provided in the embodiment of the present application. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application. In addition, it should be understood that the specific implementation methods described herein are only used to illustrate and explain the present application, and are not used to limit the present application. In the present application, the various embodiments can be combined with each other but will not be repeated one by one, and in the absence of contrary instructions, the directional words used, such as "upper" and "lower", usually refer to the upper and lower parts of the device in actual use or working state, specifically the drawing direction in the drawings; while "inside" and "outside" refer to the outline of the device; the terms "first", "second", "third", etc. are used only as markings, and no numerical requirements are imposed or order is established.

[0040] The embodiments of the present application provide a light emitting device and a display panel, which are described in detail below. It should be noted that the description order of the following embodiments is not intended to limit the preferred order of the embodiments.

[0041] Please refer to Figure 1 The embodiment of the present application provides a light-emitting device 100 , which includes a substrate 11 , a light-emitting unit 12 , an encapsulation layer 13 and a lens 14 .

[0042] At least two light emitting units 12 are disposed on the substrate 11 at intervals. Each light emitting unit 12 includes at least one nano-light emitting diode 121 .

[0043] The encapsulation layer 13 is configured to encapsulate the at least two light emitting units 12 .

[0044] At least one lens 14 is configured to converge the light output angle of the light emitting unit 12. The at least one lens 14 is disposed on a side of the at least two light emitting units 12 away from the substrate 11;

[0045] A lens 14 is configured to converge the light output angle of at least one corresponding light emitting unit 12. On a plane perpendicular to the board surface of the substrate 11, a lens 14 and the corresponding light emitting unit 12 have a center line z1 that deviates from the main optical axis z2 of the lens 14.

[0046] The light-emitting device 100 of the embodiment of the present application increases the light output brightness of the light-emitting device 100 by disposing more nano-light-emitting diodes 121, and uses a lens 14 to converge the light output of the light-emitting unit 12, thereby increasing the light output brightness when viewed from the front. In addition, the center line z1 of the light-emitting unit 12 is deviated from the main optical axis z2 of the lens 14 to avoid excessive convergence of the light output angle of the light-emitting unit 12, thereby compensating for the light output brightness at a side viewing angle.

[0047] It can be understood that the principal optical axis z2 of the lens 14 is a straight line passing through the centers of the two surfaces (the light emitting surface and the light incident surface) of the lens 14 , and the straight line also passes through the focus of the lens 14 .

[0048] Optionally, the substrate 11 may include circuit traces to connect the light emitting unit 12. In addition, a binding pad 111 is provided on one side of the substrate 11 away from the light emitting unit 12, and the binding pad 111 is configured to connect to an external device to receive current to drive the light emitting device 100 to emit light.

[0049] Please refer to Figure 2 The binding pad 111 may include an anode pad 11 a and a cathode pad 11 b , wherein one anode pad 11 a is connected to one light emitting unit 12 , and one cathode pad 11 b is connected to all light emitting units 12 .

[0050] One anode pad 11 a is connected to one light-emitting unit 12 , that is, each light-emitting unit 12 is configured to emit light independently, so that each light-emitting unit 12 can be driven independently to achieve precise control.

[0051] In some embodiments, at least two light-emitting units 12 may be connected to an anode pad 11a, for example, some of the light-emitting units 12 are connected to an anode pad 11a so that the light-emitting units 12 emit light together; or all of the light-emitting units 12 are connected to an anode pad 11a so that all of the light-emitting units 12 emit light together.

[0052] Optionally, the at least two light-emitting units 12 may be two, three, or four or more light-emitting units 12. The light-emitting unit 12 includes at least one nano-light-emitting diode 121, and the light-emitting unit 12 may include one, two, three, four or more nano-light-emitting diodes 121; when the light-emitting unit 12 includes at least two nano-light-emitting diodes 121, the plurality of nano-light-emitting diodes 121 may be connected in series or in parallel to form a whole.

[0053] Optional, see Figure 3 The nano-LED 121 includes a diode body 121a and a protection layer 121b covering the diode body 121a. The two sides of the diode body 121a are exposed to facilitate electrical connection with external devices.

[0054] Optionally, the lens 14 is a focusing lens, such as a plano-convex lens, a biconvex lens or other lenses.

[0055] In some embodiments of the present application, at least two light emitting units 12 include a first light emitting unit 12a and a second light emitting unit 12b. At least one lens 14 includes a first lens 14a and a second lens 14b, wherein the first lens 14a covers the first light emitting unit 12a, and the second lens 14b covers the second light emitting unit 12b;

[0056] On a plane perpendicular to the surface of the substrate 11, the center line z1 of the first light-emitting unit 12a deviates from the main optical axis z2 of the first lens 14a, the distance between the main optical axis z2 of the first lens 14a and the main optical axis z2 of the second lens is a first distance H1, the distance between the center line z1 of the first light-emitting unit 12a and the center line z1 of the second light-emitting unit 12b is a second distance H2, and the second distance H2 is greater than or equal to the first distance H1.

[0057] It is understandable that setting the second distance H2 to be greater than or equal to the first distance H1 can appropriately improve the side view brightness of the light emitting device 100 and avoid excessive front view brightness of the light emitting device 100, which would cause a grainy display.

[0058] In some embodiments of the present application, on a plane perpendicular to the surface of the substrate 11, the center line z1 of the first light-emitting unit 12a is arranged on a side of the main optical axis z2 of the first lens 14a away from the second light-emitting unit 12b, and the center line z1 of the second light-emitting unit 12b is arranged on a side of the main optical axis z2 of the second lens 14b away from the first light-emitting unit 12a.

[0059] It can be understood that the second distance H2 is greater than the first distance H1, which can increase the light emitting range of the light emitting device 100, and the first light emitting unit 12a and the second light emitting unit 12b are far away from each other, which can further compensate for the side view brightness and improve the uniformity of light emission on both sides.

[0060] In some embodiments of the present application, the first light emitting unit 12a and the second light emitting unit 12b are each configured to emit light independently.

[0061] The first light-emitting unit 12a and the second light-emitting unit 12b can emit light independently, so that the light-emitting device 100 has two light-emitting modes, one is a single light-emitting mode (one light-emitting unit emits light, and the other light-emitting unit does not emit light), and the other is a full light-emitting mode. In the full light-emitting mode, a wide viewing angle display can be achieved; in the single light-emitting mode, unilateral visibility can be achieved, which has the effect of unilateral peeping prevention.

[0062] For example, please refer to Figure 1 In the single light-emitting mode, if the first light-emitting unit 12a emits light and the second light-emitting unit 12b does not emit light, the left side can be protected from peeping; if the second light-emitting unit 12b emits light and the first light-emitting unit 12a does not emit light, the right side can be protected from peeping.

[0063] Optionally, in some embodiments of the present application, the first light-emitting unit 12a and the second light-emitting unit 12b may also be arranged in other different positions.

[0064] for example Figure 4 , Figure 4 FIG. 1 is a schematic diagram of a second structure of the light emitting device 100 provided in an embodiment of the present application. Figure 4 As shown, on a plane perpendicular to the surface of the substrate 11, the center line z1 of the first light-emitting unit 12a is arranged on a side of the main optical axis z2 of the first lens 14a away from the second light-emitting unit 12b, and the center line z1 of the second light-emitting unit 12b is arranged on a side of the main optical axis z2 of the second lens 14b close to the first light-emitting unit 12a.

[0065] That is to say, the first light-emitting unit 12a and the second light-emitting unit 12b are respectively arranged on the same side of the corresponding principal optical axis z2, for example, the first light-emitting unit 12a is located on the left side of the principal optical axis z2 of the first lens 14a, and the second light-emitting unit 12b is located on the left side of the principal optical axis z2 of the second lens 14b; or, the first light-emitting unit 12a is located on the right side of the principal optical axis z2 of the first lens 14a, and the second light-emitting unit 12b is located on the right side of the principal optical axis z2 of the second lens 14b.

[0066] Among them, the first light-emitting unit 12a and the second light-emitting unit 12b are respectively located on the same side of the main optical axis z2 (for example, the left side). The angle at which the light of the light-emitting unit 12 is deflected by the lens 14 will increase as it is farther away from the focus of the lens 14. As a result, the light emission angle of the light-emitting device 100 corresponding to the side (for example, the left side) becomes appropriately smaller, while the light emission brightness of the other side (for example, the right side) of the light-emitting device 100 is increased, thereby achieving single-sided peeping protection.

[0067] Based on this, whether it is a single light-emitting mode or a full light-emitting mode, single-side peeping protection can be achieved. The single light-emitting mode can adjust the light brightness and appropriately expand the light-emitting angle of the light-emitting device 100.

[0068] Another example Figure 5 , Figure 5 FIG. 1 is a schematic diagram of a third structure of the light emitting device 100 provided in an embodiment of the present application. Figure 5 As shown, the center line z1 of the first light emitting unit 12a is arranged on the side of the main optical axis z2 of the first lens 14a away from the second light emitting unit 12b, and the center line z1 of the second light emitting unit 12b coincides with the main optical axis z2 of the second lens 14b.

[0069] That is to say, the second lens 14b has the best focusing and collimating effect on the second light-emitting unit 12b to ensure the light output efficiency at the positive viewing angle, while the first light-emitting unit 12a deviates from the main optical axis z2 of the first lens 14a and is away from the second light-emitting unit 12b to appropriately expand the light-emitting angle of the light-emitting device 100 and compensate for the side-view brightness.

[0070] In the single light-emitting mode, if only the first light-emitting unit 12a emits light, single-sided peeping protection can be achieved; if only the second light-emitting unit 12b emits light, the light output uniformity of the light-emitting device 100 can be achieved, and double-sided wide-angle peeping protection can be achieved.

[0071] Figure 6 The fourth structural schematic diagram of the light emitting device 100 according to the embodiment of the present application is shown. Based on any of the above embodiments, different light emitting units 12 are provided with different lenses 14 accordingly.

[0072] In some embodiments of the present application, a thickness h1 of the first lens 14a is different from a thickness h1 of the second lens 14b; and / or an aperture h2 of the first lens 14a is different from an aperture h2 of the second lens 14b.

[0073] It is understandable that the aperture h2 refers to the maximum effective diameter of the lens. The thickness h1 and the aperture h2 of the first lens 14a and the second lens 14b can achieve different deflection strengths of the light by the first lens 14a and the second lens 14b, so that the side with strong deflection forms a strong anti-peeping effect, while the other side forms a weak anti-peeping effect, and the side with weak anti-peeping effect can compensate for the brightness of the normal viewing angle.

[0074] Among them, when the aperture of the lens 14 is the same, the larger the thickness of the lens 14, the more convex it is, and the smaller its radius of curvature, so the greater the intensity of its deflected light angle, that is, the different radii of curvature of the light-emitting surface can achieve different degrees of light deflection. When the thickness of the lens 14 is the same, the smaller the aperture of the lens 14, the smaller its radius of curvature, so the greater the intensity of its deflected light angle, that is, the different radii of curvature of the light-emitting surface can achieve different degrees of light deflection. Therefore, the deflection intensity of the light by the lens 14 can be adjusted by adjusting the thickness h1 and the aperture h2 of the lens 14, and then setting lenses 14 with different light deflection intensities to achieve strong and weak anti-peeping of the light-emitting device 100.

[0075] Optionally, in some embodiments, the intensity of the light deflection angle can be adjusted by adjusting the distance in the thickness direction between the light emitting surface of the light emitting unit 12 and the focus of the lens 14. For example, in the thickness direction of the light emitting device 100, the light emitting surface of the first light emitting unit 12a is lower than the focus of the first lens 14a, and the light emitting surface of the second light emitting unit 12b is higher than the focus of the second lens 14b.

[0076] It can be understood that the light emitting surface refers to the plane of the light emitting unit 12 away from the substrate 11. Since the light emitting surface of the first light emitting unit 12a is lower than the focus, and the light emitting surface of the second light emitting unit 12b is lower than the focus, the first lens 14a deflects the light of the first light emitting unit 12a more strongly, and the second lens 14b deflects the light of the second light emitting unit 12b less strongly, based on which the strong anti-peeping and weak anti-peeping properties of the light emitting device 100 can be achieved.

[0077] Figure 7 Shown is a fifth structural schematic diagram of the light emitting device 100 according to an embodiment of the present application.

[0078] Please refer to Figure 7In some embodiments of the present application, based on any of the above embodiments, the light-emitting device 100 further includes a color conversion layer 15, a reflective layer 16 and a light shielding layer 17, and the encapsulation layer 13 is provided with an opening 131. The at least two light-emitting units 12 are arranged in the opening 131, and the reflective layer 16 covers the portion of the substrate 11 corresponding to the opening 131 and the sidewall of the opening 131. The color conversion layer 15 is arranged in the opening 131 and covers the at least two light-emitting units 12. The light shielding layer 17 is arranged on a side of the encapsulation layer 13 away from the substrate 11. The light shielding layer 17 is arranged around the periphery of the opening 131.

[0079] In the light emitting device 100 viewed from a top perspective, the edge line of the lens 14 is located at the inner circle of the light shielding layer 17 .

[0080] It can be understood that the color conversion layer 15 is disposed in the opening 131, which can not only reduce the thickness of the light-emitting device 100, but also configure a plurality of light-emitting devices 100 that emit light of different colors using a light-emitting unit 12. For example, if the light-emitting unit 12 is configured to emit blue light, when the color conversion layer 15 is a red color conversion layer, the light-emitting device 100 emits red light; when the color conversion layer 15 is a green color conversion layer, the light-emitting device 100 emits green light. If the light-emitting device 100 is to emit blue light, the light-emitting unit 12 can be directly covered with the encapsulation layer 13.

[0081] Secondly, the reflective layer 16 covers the bottom and sidewalls of the opening 131, so that the light emitted by the light-emitting unit 12 is efficiently utilized, thereby improving the light extraction efficiency. At the same time, based on the reflective layer 16 covering the sidewalls of the opening 131, the light-emitting angle of the light-emitting device 100 can be further reduced, thereby improving the anti-peeping effect.

[0082] Optionally, the reflective layer 16 may be a transparent photoresist material doped with reflective particles, such as titanium oxide, aluminum oxide particles, etc.; or may be a reflective metal layer.

[0083] In addition, the provision of the light shielding layer 17 can not only prevent light crosstalk between different light emitting devices 100 , but also improve display contrast and cover the frame area of ​​the light emitting device 100 .

[0084] Optionally, the thickness of the color conversion layer 15 is lower than that of the encapsulation layer 13 , so that another encapsulation layer 13 covers the color conversion layer 15 to protect the color conversion layer 15 and reduce the risk of the color conversion layer 15 being attacked by water and oxygen.

[0085] Optionally, the inner circle of the light shielding layer 17 is filled with a flat layer, and the flat layer is flush with the light shielding layer 17 to facilitate the arrangement of the lens 14 .

[0086] Optionally, in some embodiments of the present application, based on the surface of the substrate 11 close to the reflective layer 16 , the height g of the portion of the reflective layer 16 covering the sidewall of the opening 131 is greater than the height g of the color conversion layer 15 .

[0087] It can be understood that the height g of the reflective layer 16 is greater than the height g of the color conversion layer 15 , so that the reflective layer 16 increases the restriction on large-angle light, further improving the anti-peeping effect.

[0088] Figure 8 A sixth structural schematic diagram of the light emitting device 100 according to an embodiment of the present application is shown.

[0089] Please refer to Figure 8 In some embodiments of the present application, based on any of the above embodiments, the light-emitting unit 12 further includes a third light-emitting unit 12c, which is disposed between the first light-emitting unit 12a and the second light-emitting unit 12b, and the third light-emitting unit 12c is correspondingly provided with a third lens 14c. The center line z1 of the third light-emitting unit 12c coincides with the main optical axis z2 of the third lens 14c.

[0090] The arrangement of the third light-emitting unit 12c and the third lens 14c can improve the luminance of the light-emitting device 100 at a positive viewing angle.

[0091] In some embodiments, the aperture of the third lens 14c is larger than the apertures of the first lens 14a and the second lens 14b to improve the brightness of the light at a normal viewing angle. The apertures of the first lens 14a and the second lens 14b are equal, and the curvature radii of the light-emitting surfaces of the two are also equal to improve the uniformity of the left and right light output of the light-emitting device 100.

[0092] Fig. 9 The seventh structural schematic diagram of the light emitting device 100 of the embodiment of the present application is shown. The difference between this embodiment and the above embodiments is that: a lens 14 is used to converge the light emitted by at least two light emitting units 12 at the same time.

[0093] exist Fig. 9 In order to avoid redundancy, only the parts that are different from those of the above-mentioned embodiments are described.

[0094] Please refer to Fig. 9 In some embodiments of the present application, at least two light emitting units 12 include a first light emitting unit 12a and a second light emitting unit 12b, and a lens 14 covers the first light emitting unit 12a and the second light emitting unit 12b.

[0095] The center line z1 of the first light emitting unit 12a is located on the side of the main optical axis z2 of the lens 14 away from the second light emitting unit 12b, and the center line z1 of the second light emitting unit 12b is located on the side of the main optical axis z2 of the lens 14 away from the first light emitting unit 12a.

[0096] It is understandable that using one lens 14 to simultaneously converge the light from at least two light-emitting units 12 can save the assembly of the lens 14 and can also save time when performing an offset arrangement of the light-emitting units 12 .

[0097] In addition, using a larger lens 14 to cover at least two light-emitting units 12 can more comprehensively converge the light flux of a larger area, thereby improving the convergence effect.

[0098] Fig.10 The eighth structural schematic diagram of the light emitting device 100 according to the embodiment of the present application is shown. Fig.10 It is shown in Fig. 9 On the basis of the corresponding embodiment, a color conversion layer 15, a reflection layer 16 and a light shielding layer 17 are provided.

[0099] The difference between this embodiment and the above-mentioned embodiment is that in the light emitting device 100 in a top view, the edge portion of the lens 14 is arranged to overlap with the light shielding layer 17 .

[0100] The overlapping of the edge of the lens 14 and the light shielding layer 17 can save space and further improve the anti-peeping effect.

[0101] Fig.11 The ninth structural schematic diagram of the light emitting device 100 of the embodiment of the present application is shown. The difference between this embodiment and the above embodiments is that: a lens 14 is used to converge the light emitted by at least two light emitting units 12 at the same time.

[0102] exist Fig.11 In order to avoid redundancy, only the parts that are different from those of the above-mentioned embodiments are described.

[0103] Please refer to Fig.11 In some embodiments of the present application, at least two light-emitting units 12 include a first light-emitting unit 12a, a second light-emitting unit 12b and a third light-emitting unit 12c, and a lens 14 covers the first light-emitting unit 12a, the second light-emitting unit 12b and the third light-emitting unit 12c.

[0104] The center line z1 of the third light-emitting unit 12c coincides with the main optical axis z2 of the lens 14, the center line z1 of the first light-emitting unit 12a is located on the side of the third light-emitting unit 12c away from the second light-emitting unit 12b, and the center line z1 of the second light-emitting unit 12b is located on the side of the third light-emitting unit 12c away from the first light-emitting unit 12a.

[0105] It can be understood that adding the third light-emitting unit 12c can improve the light output brightness of the light-emitting device 100 at a front viewing angle.

[0106] Fig.12Shown is a schematic structural diagram of a display panel 1000 according to an embodiment of the present application.

[0107] Please refer to Fig.12 Accordingly, the embodiment of the present application further provides a display panel 1000 , which includes a driving substrate 200 and a light-emitting device 100 as in any one of the above embodiments, and the light-emitting device 100 is disposed on the driving substrate 200 .

[0108] It should be noted that the driving substrate 200 is configured to drive the light emitting device 100 to emit light. In addition, the structure of the light emitting device 100 of the display panel 1000 of the embodiment of the present application is similar or the same as the structure of the light emitting device 100 of any of the above embodiments. Figures 1 to 11 The relevant explanation will not be repeated here.

[0109] In the display panel 100 of the embodiment of the present application, the light-emitting device 100 includes at least two light-emitting units 12, each light-emitting unit 12 includes at least one nano-light-emitting diode 121, and a lens 14 is configured to converge the light output angle of at least one light-emitting unit 12. On a plane perpendicular to the surface of the substrate 11, a lens 14 and the corresponding converging light-emitting unit 12, the center line z1 of at least one light-emitting unit 12 deviates from the main optical axis z2 of the lens 14.

[0110] The display panel 1000 of the embodiment of the present application increases the light output brightness of the light-emitting device by disposing more nano-LEDs 121, and uses a lens 14 to converge the light output of the light-emitting unit 12, thereby achieving a large-angle peeping protection effect; in addition, the center line z1 of the light-emitting unit 12 is deviated from the main optical axis z2 of the lens 14 to avoid excessive convergence of the light output angle of the light-emitting unit, thereby compensating for the light brightness at a side viewing angle.

[0111] The above is a detailed introduction to a light-emitting device and a display panel provided in the embodiments of the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea. At the same time, for technical personnel in this field, according to the idea of ​​the present application, 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 application.

Claims

1. A light emitting device, characterized in that: include: substrate; At least two light-emitting units are arranged on the substrate at intervals, and each of the light-emitting units includes at least one nano-light-emitting diode; an encapsulation layer, configured to encapsulate the at least two light-emitting units; at least one lens, configured to converge the light emission angle of the light emitting unit, the at least one lens being arranged on a side of the at least two light emitting units away from the substrate; Among them, one of the lenses is configured to converge the light output angle of at least one of the light-emitting units. On a plane perpendicular to the surface of the substrate, the center line of at least one of the light-emitting units that converges with the lens deviates from the main optical axis of the lens.

2. The light emitting device according to claim 1, characterized in that: At least two of the light-emitting units include a first light-emitting unit and a second light-emitting unit, and at least one of the lens covers includes a first lens and a second lens, the first lens covers the first light-emitting unit, and the second lens covers the second light-emitting unit; On a plane perpendicular to the surface of the substrate, a center line of the first light-emitting unit deviates from a principal optical axis of the first lens, a distance between the principal optical axis of the first lens and the principal optical axis of the second lens is a first distance, a distance between the center line of the first light-emitting unit and the center line of the second light-emitting unit is a second distance, and the second distance is greater than or equal to the first distance.

3. The light emitting device according to claim 2, characterized in that: On a plane perpendicular to the surface of the substrate, the center line of the first light-emitting unit is arranged on a side of the main optical axis of the first lens away from the second light-emitting unit, and the center line of the second light-emitting unit is arranged on a side of the main optical axis of the second lens away from the first light-emitting unit.

4. The light emitting device according to claim 2, characterized in that: On a plane perpendicular to the plate surface of the substrate, a center line of the first light-emitting unit is arranged on a side of the main optical axis of the first lens away from the second light-emitting unit; The center line of the second light emitting unit is arranged on a side of the main optical axis of the second lens close to the first light emitting unit; or, the center line of the second light emitting unit coincides with the main optical axis of the second lens.

5. The light emitting device according to any one of claims 2 to 4, characterized in that: The thickness of the first lens is different from the thickness of the second lens; and / or the aperture of the first lens is different from the aperture of the second lens.

6. The light emitting device according to claim 1, characterized in that: At least two of the light-emitting units include a first light-emitting unit and a second light-emitting unit, and a lens covers the first light-emitting unit and the second light-emitting unit; The center line of the first light emitting unit is located on a side of the main optical axis of the lens away from the second light emitting unit, and the center line of the second light emitting unit is located on a side of the main optical axis of the lens away from the first light emitting unit.

7. The light emitting device according to claim 1, characterized in that: At least two of the light-emitting units include a first light-emitting unit, a second light-emitting unit and a third light-emitting unit, and the lens covers the first light-emitting unit, the second light-emitting unit and the third light-emitting unit; The center line of the third light-emitting unit coincides with the main optical axis of the lens, the center line of the first light-emitting unit is located on a side of the third light-emitting unit away from the second light-emitting unit, and the center line of the second light-emitting unit is located on a side of the third light-emitting unit away from the first light-emitting unit.

8. The light emitting device according to any one of claims 2-4, 6-7, characterized in that: The first light emitting unit and the second light emitting unit are each configured to emit light independently.

9. The light emitting device according to any one of claims 1 to 4, 6 to 7, characterized in that: The light-emitting device further comprises a color conversion layer, a reflective layer and a light shielding layer, the encapsulation layer is provided with an opening, the at least two light-emitting units are provided in the opening, the reflective layer covers a portion of the substrate corresponding to the opening and a side wall of the opening, the color conversion layer is provided in the opening and covers the at least two light-emitting units, the light shielding layer is provided on a side of the encapsulation layer away from the substrate, and the light shielding layer is provided around the periphery of the opening; In the light emitting device viewed from a top perspective, the edge portion of the lens is overlapped with the light shielding layer, or the edge line of the lens is located in the inner circle of the light shielding layer.

10. The light emitting device according to claim 9, characterized in that: Based on the surface of the substrate close to the reflective layer, the height of the portion of the reflective layer covering the side wall of the opening is greater than the height of the color conversion layer.

11. A display panel, characterized in that: The invention comprises a driving substrate and a light emitting device as claimed in any one of claims 1 to 10, wherein the light emitting device is arranged on the driving substrate.

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