Display device, display panel and manufacturing method thereof

Abstract

The invention discloses a display device, a display panel and a manufacturing method thereof. A light-emitting device of the display panel is arranged on one side of the driving backboard; the light-emitting devices comprise a first light-emitting device, a second light-emitting device and a third light-emitting device which are different in light-emitting color; each light-emitting device is divided into a plurality of light-emitting units which are distributed along a first direction and a second direction in an array manner; the light-emitting unit comprises at least one of a second light-emitting device and a third light-emitting device and the first light-emitting device; the area of the orthographic projection of the first light-emitting device on the driving back plate is larger than four times of the area of the orthographic projection of any one of the second light-emitting device and the third light-emitting device on the driving back plate; the plurality of lens arrays are distributed on one side, far away from the driving back plate, of the light-emitting device; the lens includes a first lens overlapping the first light emitting device; the lens shrinks in the direction away from the driving back plate and is used for converging light rays emitted by the light-emitting device overlapped with the lens.

Description

Display device, display panel and manufacturing method thereof Technical Field

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

[0002] Organic electroluminescent display panels, which use organic light-emitting diodes (OLEDs) as light-emitting devices, have been widely used. However, the light extraction efficiency of the display panels is limited, resulting in low brightness. Increasing the brightness requires increasing power consumption.

[0003] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute prior art known to ordinary technicians in the field.

[0004] Summary of the Invention

[0005] The present disclosure provides a display device, a display panel, and a method for manufacturing a display panel.

[0006] According to one aspect of the present disclosure, there is provided a display panel, comprising:

[0007] Driver backplane;

[0008] A plurality of light-emitting devices are provided on one side of the driver backplane; the light-emitting devices include a first light-emitting device, a second light-emitting device, and a third light-emitting device emitting light of different colors; each of the light-emitting devices is divided into a plurality of light-emitting units distributed in an array along a first direction and a second direction; a light-emitting unit includes at least one of the second light-emitting device and the third light-emitting device and the first light-emitting device; an orthographic projection area of ​​the first light-emitting device on the driver backplane is greater than four times the orthographic projection area of ​​either the second light-emitting device or the third light-emitting device on the driver backplane;

[0009] A plurality of lenses are arrayed and distributed on a side of the light-emitting device away from the driving backplane; the lens includes a first lens overlapping with the first light-emitting device; the lens shrinks in a direction away from the driving backplane and is used to converge the light emitted by the light-emitting device overlapping with the lens.

[0010] In an exemplary embodiment of the present disclosure, the spacing between two adjacent light-emitting devices is not less than 22 μm; the boundary of the orthographic projection of the first light-emitting device on the driving backplane is polygonal, and the side length of at least one side of the polygon is greater than 18 μm; the maximum distance between two points in the boundary of the orthographic projection of the same first lens on the driving backplane is not less than 25 μm; and the spacing between two adjacent first lenses is not less than 10 μm.

[0011] In an exemplary embodiment of the present disclosure, the lens further includes a second lens overlapping with the second light-emitting device and a third lens overlapping with the third light-emitting device; the orthographic projection of the first lens on the driving backplane is larger than the orthographic projections of the second lens and the third lens on the driving backplane;

[0012] The distance between two adjacent first lenses is smaller than the distance between the first lens and any one of the second lens and the third lens.

[0013] In an exemplary embodiment of the present disclosure, the number of light-emitting devices in a light-emitting unit is two; the light-emitting unit includes a first light-emitting unit and a second light-emitting unit alternately distributed in the first direction and the second direction;

[0014] The light emitting devices of the first light emitting unit are the first light emitting device and the second light emitting device, and the light emitting devices of the second light emitting unit are the first light emitting device and the third light emitting device.

[0015] In an exemplary embodiment of the present disclosure, the number of light-emitting devices in one light-emitting unit is three, including the first light-emitting device, the second light-emitting device, and the third light-emitting device.

[0016] In an exemplary embodiment of the present disclosure, the distance between two adjacent light-emitting units is not less than 99.2 μm and less than 145.6 μm;

[0017] The orthographic projections of the second light-emitting device and the third light-emitting device on the driving backplane are polygonal, and the length of at least one side of the polygon is no more than 18 μm;

[0018] The maximum distance between two points in the boundary of the orthographic projection of the same second lens on the driving backplane is not greater than 25 μm; the maximum distance between two points in the boundary of the orthographic projection of the same third lens on the driving backplane is not greater than 25 μm.

[0019] In an exemplary embodiment of the present disclosure, the distance between two adjacent light-emitting units is not less than 145.6 μm;

[0020] The orthographic projections of the second light-emitting device and the third light-emitting device on the driving backplane are polygonal, and the length of at least one side of the polygon is greater than 18 μm;

[0021] The maximum distance between two points in the boundary of the orthographic projection of the same second lens on the driving backplane is greater than 25 μm; the maximum distance between two points in the boundary of the orthographic projection of the same third lens on the driving backplane is greater than 25 μm.

[0022] In an exemplary embodiment of the present disclosure, the distance between two adjacent light-emitting units is not less than 145.6 μm and less than 187 μm;

[0023] The orthographic projections of the second light-emitting device and the third light-emitting device on the driving backplane are polygonal, and the length of at least one side of the polygon is no more than 18 μm;

[0024] The maximum distance between two points in the boundary of the orthographic projection of the same second lens on the driving backplane is not greater than 25 μm; the maximum distance between two points in the boundary of the orthographic projection of the same third lens on the driving backplane is not greater than 25 μm.

[0025] In an exemplary embodiment of the present disclosure, the distance between two adjacent light-emitting units is not less than 187 μm;

[0026] The orthographic projections of the second light-emitting device and the third light-emitting device on the driving backplane are polygonal, and the length of at least one side of the polygon is greater than 18 μm;

[0027] The maximum distance between two points in the boundary of the orthographic projection of the same second lens on the driving backplane is greater than 25 μm; the maximum distance between two points in the boundary of the orthographic projection of the same third lens on the driving backplane is greater than 25 μm.

[0028] In an exemplary embodiment of the present disclosure, the lens is a spherical segment structure.

[0029] In an exemplary embodiment of the present disclosure, the ratio of the bottom diameter to the arch height of the spherical segment structure is not less than 3:1 and not more than 5:1.

[0030] In an exemplary embodiment of the present disclosure, the display panel is divided into a plurality of pixel areas arrayed along the first direction and the second direction, and one of the light-emitting units is located within one of the pixel areas; the range of the first light-emitting device is greater than 30% of the range of the pixel area in which it is located.

[0031] In an exemplary embodiment of the present disclosure, a boundary of the first light emitting device partially coincides with a boundary of the pixel area.

[0032] In an exemplary embodiment of the present disclosure, one first lens overlaps with a plurality of adjacent pixel regions, and one lens overlaps with only one light emitting device.

[0033] In an exemplary embodiment of the present disclosure, the display panel further includes:

[0034] an encapsulation layer, covering the light-emitting device;

[0035] The lens is arranged on a surface of the packaging layer away from the driving backplane;

[0036] A light-transmitting layer covers the lens, and the refractive index of the light-transmitting layer is smaller than the refractive index of the lens.

[0037] According to one aspect of the present disclosure, a method for manufacturing a display panel is provided, comprising:

[0038] forming a driving backplane;

[0039] A plurality of light-emitting devices are formed on one side of the driver backplane; the light-emitting devices include a first light-emitting device, a second light-emitting device, and a third light-emitting device having different luminous colors; each of the light-emitting devices is divided into a plurality of light-emitting units distributed in an array along a first direction and a second direction; a light-emitting unit includes at least one of the second light-emitting device and the third light-emitting device and the first light-emitting device; an orthographic projection area of ​​the first light-emitting device on the driver backplane is greater than four times an orthographic projection area of ​​either the second light-emitting device or the third light-emitting device on the driver backplane;

[0040] A plurality of lenses are arranged in an array on a side of the light-emitting device away from the driving backplane; the lenses include a first lens overlapping with the first light-emitting device, a second lens overlapping with the second light-emitting device, and a third lens overlapping with the third light-emitting device; the lenses contract in a direction away from the driving backplane and are used to converge light emitted by the light-emitting devices overlapping with the lenses; the orthographic projection of the first lens on the driving backplane is larger than the orthographic projections of the second lens and the third lens on the driving backplane; and the distance between two adjacent first lenses is smaller than the distance between either the second lens or the third lens and the first lens;

[0041] The first lens is formed by a printing process.

[0042] In an exemplary embodiment of the present disclosure, the number of light-emitting devices in a light-emitting unit is two; the light-emitting unit includes a first light-emitting unit and a second light-emitting unit alternately distributed in the first direction and the second direction;

[0043] The light emitting devices of the first light emitting unit are the first light emitting device and the second light emitting device, and the light emitting devices of the second light emitting unit are the first light emitting device and the third light emitting device;

[0044] The distance between two adjacent light-emitting units is not less than 99.2 μm and less than 145.6 μm;

[0045] The orthographic projections of the second light-emitting device and the third light-emitting device on the driving backplane are polygonal, and the length of at least one side of the polygon is no more than 18 μm;

[0046] The maximum distance between two points on the boundary of the orthographic projection of the same second lens on the driving backplane is not greater than 25 μm; the maximum distance between two points on the boundary of the orthographic projection of the same third lens on the driving backplane is not greater than 25 μm;

[0047] The second lens and the third lens are formed by a photolithography process.

[0048] In an exemplary embodiment of the present disclosure, the number of light-emitting devices in a light-emitting unit is two; the light-emitting unit includes a first light-emitting unit and a second light-emitting unit alternately distributed in the first direction and the second direction;

[0049] The light emitting devices of the first light emitting unit are the first light emitting device and the second light emitting device, and the light emitting devices of the second light emitting unit are the first light emitting device and the third light emitting device;

[0050] The distance between two adjacent light-emitting units is not less than 145.6 μm;

[0051] The orthographic projections of the second light-emitting device and the third light-emitting device on the driving backplane are polygonal, and the length of at least one side of the polygon is greater than 18 μm;

[0052] The maximum distance between two points on the boundary of the orthographic projection of the same second lens on the driving backplane is greater than 25 μm; the maximum distance between two points on the boundary of the orthographic projection of the same third lens on the driving backplane is greater than 25 μm;

[0053] The second lens and the third lens are formed by a printing process.

[0054] In an exemplary embodiment of the present disclosure, the number of light-emitting devices in the light-emitting unit is three, and includes the first light-emitting device, the second light-emitting device, and the third light-emitting device;

[0055] The distance between two adjacent light-emitting units is not less than 145.6 μm and less than 187 μm;

[0056] The orthographic projections of the second light-emitting device and the third light-emitting device on the driving backplane are polygonal, and the length of at least one side of the polygon is no more than 18 μm;

[0057] The maximum distance between two points on the boundary of the orthographic projection of the same second lens on the driving backplane is not greater than 25 μm; the maximum distance between two points on the boundary of the orthographic projection of the same third lens on the driving backplane is not greater than 25 μm;

[0058] The second light emitting device and the third light emitting device are formed by a photolithography process.

[0059] In an exemplary embodiment of the present disclosure, the number of light-emitting devices in the light-emitting unit is three, and includes the first light-emitting device, the second light-emitting device, and the third light-emitting device;

[0060] The distance between two adjacent light-emitting units is not less than 187 μm;

[0061] The orthographic projections of the second light-emitting device and the third light-emitting device on the driving backplane are polygonal, and the length of at least one side of the polygon is greater than 18 μm;

[0062] The maximum distance between two points on the boundary of the orthographic projection of the same second lens on the driving backplane is greater than 25 μm; the maximum distance between two points on the boundary of the orthographic projection of the same third lens on the driving backplane is greater than 25 μm;

[0063] The second lens and the third lens are formed by a printing process.

[0064] According to one aspect of the present disclosure, a display device is provided, comprising any one of the display panels described above.

[0065] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0066] The accompanying drawings are incorporated into and constitute a part of the specification, illustrate embodiments consistent with the present disclosure, and together with the specification, are used to explain the principles of the present disclosure. Obviously, the drawings described below are only some embodiments of the present disclosure, and those skilled in the art can derive other drawings based on these drawings without inventive effort.

[0067] FIG1 is a top view of an embodiment of a display panel disclosed herein.

[0068] FIG2 is a cross-sectional view of an embodiment of a display panel according to the present disclosure.

[0069] FIG3 is a cross-sectional view of an embodiment of the present disclosure showing a display panel adopting a first arrangement manner.

[0070] FIG4 is a cross-sectional view of another embodiment of the present disclosure showing a display panel adopting the first arrangement manner.

[0071] FIG5 is a cross-sectional view of an embodiment of the present disclosure showing a display panel adopting a second arrangement manner.

[0072] FIG6 is a cross-sectional view of another embodiment of the present disclosure showing a display panel adopting a second arrangement manner.

[0073] FIG. 7 is a schematic diagram showing a partial distribution of lenses of a display panel according to the present disclosure. DETAILED DESCRIPTION

[0074] Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the concepts of the example embodiments to those skilled in the art. Like reference numerals in the figures represent identical or similar structures, and thus their detailed descriptions will be omitted. Furthermore, the figures are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale.

[0075] The terms "a", "an", "the", "said" and "at least one" are used to indicate the presence of one or more elements / components / etc.; the terms "including" and "having" are used to express open-ended inclusion and mean that additional elements / components / etc. may be present in addition to the listed elements / components / etc.; the terms "first", "second" and "third" are used only as labels and do not limit the quantity of their objects.

[0076] The first direction U and the second direction V herein are two intersecting directions. In the drawings of this disclosure, the first direction U may be horizontal and the second direction V may be vertical, with the two directions being perpendicular to each other. However, the present invention is not limited thereto. The first direction U and the second direction V may also be non-perpendicular directions. Furthermore, those skilled in the art will appreciate that, as the display panel rotates, the actual orientations of the first direction U and the second direction V may change, but their relative positions remain unchanged.

[0077] The "overlap" of feature A and feature B in this article means that the orthographic projection of feature A on a plane and the orthographic projection of feature B on the same plane at least partially overlap; the plane can be the surface of the driver backplane or other plane parallel to the driver backplane.

[0078] As shown in FIG1 , the present disclosure provides a display panel, which may include a display area AA and a peripheral area WA located outside the display area AA. The peripheral area WA may be a continuous annular area surrounding the display area AA or a discontinuous area surrounding the display area AA.

[0079] As shown in FIG2 , the display panel may include a driving backplane BP and a plurality of light-emitting devices LD provided on one side of the driving backplane BP, wherein:

[0080] The driving backplane BP includes a driving circuit that drives the light-emitting devices LD to emit light, thereby displaying images. In some embodiments of the present disclosure, the driving backplane BP may include a substrate SU and a circuit layer CL located on one side of the substrate SU. The substrate SU may be a flat plate and made of either a rigid material such as glass or a flexible material such as polyimide. Furthermore, the substrate SU may have a single-layer or multi-layer structure.

[0081] The circuit layer CL may include the aforementioned driving circuit. For example, the driving circuit may include a pixel circuit located in the display area AA and a peripheral circuit located in the peripheral area WA. The pixel circuit may be a 7T1C, 6T1C, or other pixel circuit. As long as it can drive the light-emitting device LD to emit light, its structure is not specifically limited herein. nTmC indicates that a pixel circuit includes n transistors (represented by the letter "T") and m capacitors (represented by the letter "C"). The number of pixel circuits may be the same as the number of light-emitting devices LD, and each light-emitting device LD is connected in a one-to-one correspondence. Of course, the same pixel circuit may also be connected to multiple light-emitting devices LD, and this is not specifically limited herein.

[0082] The peripheral circuit is connected to the pixel circuit and is used to input a drive signal to the pixel circuit to control the light emitting device LD to emit light. The peripheral circuit may include a gate drive circuit and a light emitting control circuit. Of course, it may also include other circuits. The specific structure of the peripheral circuit is not particularly limited here.

[0083] The circuit layer CL may include multiple thin-film transistors (TFTs) and capacitors. The TFTs may be top-gate or bottom-gate TFTs, each including an active layer and a gate. The active layers of each TFT are co-located in the same semiconductor layer. Alternatively, multiple semiconductor layers may be provided, with the active layers of different TFTs located in different semiconductor layers. The material of a semiconductor layer may be either polysilicon or a metal oxide, without particular limitation.

[0084] Taking a top-gate thin-film transistor as an example, the circuit layer CL may include a semiconductor layer, a first gate insulation layer, a first gate layer, a second gate insulation layer, a second gate layer, an interlayer dielectric layer, a first source and drain layer, a passivation layer, a first flat layer, a second source and drain layer, and a second flat layer, which are stacked in sequence along a direction away from the substrate SU. The specific pattern of each film layer depends on the specific composition of the driving circuit and is not specifically limited here.

[0085] As shown in Figure 2, the light-emitting device LD may be located in the display area AA, which may be an OLED (organic light-emitting diode) using an organic light-emitting material. For example, the light-emitting device LD may include a first electrode ANO, a light-emitting layer EL, and a second electrode CAT stacked in sequence in a direction away from the driving backplane BP. By applying an electrical signal to the first electrode ANO and the second electrode CAT, the light-emitting layer EL can be stimulated to emit light. The specific light-emitting principle will not be described in detail here. The first electrode ANO can be used as an anode, and the second electrode CAT can be used as a cathode. The materials of the two include conductive materials such as metals and metal oxides. The light-emitting layer EL may include a hole injection layer, a hole transport layer, a light-emitting material layer, an electron transport layer, and an electron injection layer stacked in sequence in a direction away from the driving backplane BP. Of course, other structures can also be used as long as they can cooperate with the first electrode ANO and the second electrode CAT to emit light.

[0086] As shown in FIG2 , the display panel may further include a pixel definition layer PDL that separates the light-emitting devices LD. The pixel definition layer PDL and the light-emitting devices LD may be disposed on the same surface of the driving backplane BP. For example, the pixel definition layer PDL and the first electrodes ANO may be disposed on a surface of the second planar layer away from the substrate SU. The pixel definition layer PDL is thicker than the first electrodes ANO, covers a portion of each first electrode ANO, and has pixel openings PH that expose each first electrode ANO, with each pixel opening PH exposing one first electrode ANO.

[0087] As shown in FIG2 , the light-emitting layer EL and the second electrode CAT are sequentially stacked on the first electrode ANO within the pixel opening PH. In some embodiments, the light-emitting layer EL is a continuous, integral layer structure. In addition to covering the area of ​​the first electrode ANO exposed by the pixel opening PH, the light-emitting layer EL also covers the pixel definition layer PDL. The second electrode CAT is a continuous, integral layer structure covering the light-emitting layer EL. In some embodiments, the light-emitting layer EL is a discontinuous structure, with the light-emitting layer EL of each light-emitting device LD independently spaced apart. In this case, the second electrode CAT is a continuous, integral layer structure, and the portion of the second electrode CAT located within the pixel opening PH covers the light-emitting layer EL. The portion of the second electrode CAT located outside the pixel opening PH may also cover the pixel definition layer PDL.

[0088] As shown in Figure 2, each light-emitting device LD is defined by the pixel definition layer PDL. The extent of the pixel opening PH corresponds to the extent of the light-emitting device LD. Specifically, the shape and size of the orthographic projection of the pixel opening PH on the substrate SU correspond to the shape and size of the orthographic projection of the light-emitting device LD on the substrate SU. Furthermore, the shape of the pixel opening PH corresponds to the shape of its orthographic projection on the driver backplane BP and substrate SU, and can be a polygon, such as a rectangle, or a circle. The definition of the shape and size of the light-emitting device LD herein is based on the shape and size of the pixel opening PH. For example, the size of the light-emitting device LD corresponds to the size of its pixel opening PH.

[0089] As shown in FIG2 , the light-emitting device LD includes a first light-emitting device LD1, a second light-emitting device LD2, and a third light-emitting device LD3, each emitting light of different colors. For example, the first light-emitting device LD1 is configured to emit blue light, the second light-emitting device LD2 is configured to emit red light, and the third light-emitting device LD3 is configured to emit green light. There are multiple light-emitting devices LD for each color, but the number of light-emitting devices LD for different colors is not necessarily the same.

[0090] As shown in FIG2 , in some embodiments of the present disclosure, each light-emitting device LD can be divided into a plurality of light-emitting units LU distributed in an array along a first direction U and a second direction V. A light-emitting unit LU may include a plurality of light-emitting devices LD, including a first light-emitting device LD1 and at least one of a second light-emitting device LD2 and a third light-emitting device LD3. For example:

[0091] As shown in Figures 3 and 4 , in a first arrangement, a light-emitting unit LU includes two light-emitting devices LD, both of which include a first light-emitting device LD1. Furthermore, each light-emitting unit LU can be divided into at least two categories, including a first light-emitting unit LU1 and a second light-emitting unit LU2. The first light-emitting unit LU1 may also include a second light-emitting device LD2, and the second light-emitting unit LU2 may also include a third light-emitting device LD3. The first light-emitting units LU1 and the second light-emitting units LU2 are alternately distributed in a first direction U, and the first light-emitting units LU1 and the second light-emitting units LU2 are alternately distributed in a second direction V. In this arrangement, a sub-pixel rendering (SPR) algorithm can be used to control the emission of each light-emitting device LD by borrowing color, allowing adjacent light-emitting units LU to share the light-emitting device LD and achieve color display. The specific algorithm will not be described in detail here.

[0092] As shown in Figures 5 and 6, in the second arrangement, a light-emitting unit LU includes three light-emitting devices, including a first light-emitting device LD1, a second light-emitting device LD2, and a third light-emitting device LD3. Each light-emitting unit LU is arranged in an array along a first direction U and a second direction V. The light-emitting devices LD in different light-emitting units LU can be arranged in the same arrangement, or they can be arranged in different arrangements.

[0093] In some embodiments of the present disclosure, the materials of the light-emitting layers EL of light-emitting devices LD of different colors are different, and the lifespan of the light-emitting device LD emitting blue light is relatively short. This difference in lifespan compared to the light-emitting devices LD of other colors can be reduced by increasing the light-emitting area. For example, the area of ​​the first light-emitting device LD1 emitting blue light can be made larger than the areas of the second light-emitting device LD2 emitting red light and the third light-emitting device LD3 emitting green light. That is, the orthographic projection of the pixel opening PH of the first light-emitting device LD1 on the driver backplane BP is larger than the orthographic projections of the pixel openings PH of the second light-emitting device LD2 and the third light-emitting device LD3 on the driver backplane BP. Furthermore, the area of ​​the orthographic projection of the first light-emitting device LD1 on the driver backplane BP can be made larger than four times the area of ​​the orthographic projection of either the second light-emitting device LD2 or the third light-emitting device LD3 on the driver backplane BP. This improves the uniformity of the lifespans of the light-emitting devices LD of different colors and ensures uniform brightness across the entire panel.

[0094] As shown in FIG2 , in some embodiments of the present disclosure, the display panel may further include an encapsulation layer TFE, which may cover each light-emitting device LD and be used to block external water and oxygen from corroding the light-emitting device LD. For example, the encapsulation layer TFE may be a thin film encapsulation method, which may include a first inorganic layer CVD1, an organic layer IJP, and a second inorganic layer CVD2, wherein:

[0095] The first inorganic layer CVD1 may cover each light emitting device LD, that is, the first inorganic layer CVD1 may cover the surface of the second electrode CAT away from the driving backplane BP. The material of the first inorganic layer CVD1 may include inorganic insulating materials such as silicon nitride and silicon oxide.

[0096] The organic layer IJP can be disposed on the surface of the first inorganic layer CVD1 away from the driving backplane BP. A barrier dam located in the peripheral area WA can be used to confine the boundary of the organic layer IJP to the inside of the boundary of the first inorganic layer CVD1. Furthermore, the boundary of the orthographic projection of the organic layer IJP on the driving backplane BP can be located in the peripheral area WA, ensuring that the organic layer IJP covers each light-emitting device LD.

[0097] The second inorganic layer CVD2 can cover the organic layer IJP and the first inorganic layer CVD1 not covered by the organic layer IJP. The second inorganic layer CVD2 can block the intrusion of water and oxygen, and achieve planarization through the organic layer IJP, which has fluidity before curing. The second inorganic layer CVD2 can be made of inorganic insulating materials such as silicon nitride and silicon oxide.

[0098] As shown in FIG2 , in some embodiments of the present disclosure, a plurality of lenses LE formed of an insulating and light-transmitting material may be provided on the side of the light-emitting device LD away from the driving backplane BP. The light-transmitting material may be optical adhesive or the like, and is not particularly limited here. The lens LE overlaps with the light-emitting device LD, and the lens LE may shrink in a direction away from the driving backplane BP, so as to converge the light emitted by the light-emitting device LD overlapping therewith, that is, to reduce the divergence angle of the light, and to improve the light extraction efficiency of the display panel within a certain angle, thereby improving the brightness. In actual use, an improvement in the brightness of the front of the display panel can be observed. For example, as shown in FIG2 and FIG7 , the shape of the lens LE may be a spherical segment structure, which may be regarded as a part of a sphere and may converge light. Of course, the lens LE may also be in the shape of a truncated cone, a prism, or the like, as long as it can converge light.

[0099] As shown in Figure 2, in some embodiments of the present disclosure, the lens LE is provided on the surface of the encapsulation layer TFE away from the driving backplane BP. For example, the lens LE can be provided on the surface of the second inorganic layer CVD2 away from the driving backplane BP. Of course, the lens LE can also be provided in the encapsulation layer TFE, as long as it is located on the side of the light-emitting device LD away from the driving backplane BP. At the same time, the lens LE and the light-emitting device LD can overlap one-to-one, that is, one light-emitting device LD overlaps with one lens LE, so that one lens LE converges the light emitted by one light-emitting device LD. The boundary of a lens LE can be larger than the boundary of the light-emitting device LD with which it overlaps, that is, the orthographic projection of a light-emitting device LD on the driving backplane BP is located within the orthographic projection of the lens LE with which it overlaps on the driving backplane BP, so that more light can enter the lens LE.

[0100] As shown in FIG2 , in some embodiments of the present disclosure, based on the first, second, and third light-emitting devices LD1, LD2, and LD3 described above, the lens LE can be divided into a first lens LE1, a second lens LE2, and a third lens LE3. The first lens LE1 overlaps with the first light-emitting device LD1, the second lens LE2 overlaps with the second light-emitting device LD2, and the third lens LE3 overlaps with the third light-emitting device LD3. Accordingly, if the boundary of the first light-emitting device LD1 is larger than the boundaries of the second and third light-emitting devices LD2 and LD3, the boundaries of the first lens LE1 are also larger than the boundaries of the second and third lenses LE2 and LE3.

[0101] In other embodiments of the present disclosure, as shown in FIG3 , a first lens LE1 may be provided for the first light-emitting device LD1, and a lens LE may be provided for either the second or third light-emitting device LD2 or LD3. Alternatively, as shown in FIG4 , neither the second or third light-emitting device LD2 or LD3 may be provided with a lens LE. In other words, the display panel of the present disclosure includes at least the first lens LE1, and may not include the second or third lens LE2 or LE3.

[0102] As shown in Figure 2, in some embodiments of the present disclosure, the lenses LE are arranged on the surface of the encapsulation layer TFE away from the driving backplane BP, so that the surface is uneven, and each lens LE can be covered with a light-transmitting layer OL. The light-transmitting layer OL can be made of an insulating light-transmitting material, and the refractive index of the light-transmitting layer OL is less than the refractive index of the lens LE to ensure that the lens LE can gather light; at the same time, the thickness of the light-transmitting layer OL is not less than the thickness of the lens LE, and flattening can be achieved; thereby, a touch layer or other film layers can be stacked on the side of the light-transmitting layer OL away from the driving backplane BP.

[0103] When manufacturing the lenses LE, a photolithography process can be used. Patterning can be achieved using masks and photoresists to form multiple spaced lenses LE. The specific process will not be described in detail here. However, the inventors have discovered that there is an upper limit to the size of the lenses LE that can be formed using photolithography. While ensuring that the structure meets the required specifications, the maximum distance between two points on the boundary of the orthographic projection of the lenses LE formed on the driver backplane BP is no greater than 25 μm. For example, as shown in Figures 2 and 7, the lenses LE are spherical segments, which may include a circular base and a spherical cap covering the base, which is a portion of the sphere. The diameter D of the base is the maximum distance, which is generally no greater than 25 μm. The maximum distance between the spherical cap and the base is the dome height H of the spherical segment structure. In light of the above, in order to improve the lifespan of some light-emitting devices, it is necessary to increase their size. For example, the first light-emitting device LD1 emits blue light and is larger than the second and third light-emitting devices LD2 and LD3. The larger the display panel, the larger the first light-emitting device LD1. In this case, the upper limit of the photolithography process will limit the size of the first light-emitting device LD1.

[0104] In addition, in order to ensure that the lens LE improves the light extraction efficiency of the light-emitting device LD, the light-emitting device LD and the lens LE need to be distributed in a one-to-one correspondence, and one light-emitting device LD overlaps with only one lens LE. In this case, for the lens LE with a spherical segment structure and the rectangular (the shape of the orthographic projection on the driving backplane BP) pixel opening PH, to ensure that the size of the lens LE is not smaller than the light-emitting device LD, the diameter D of the bottom surface of the lens LE (taking the first lens LE1 in the accompanying drawings as an example, the bottom surface diameters of the second lens LE2 and the third lens LE3 are r) needs to be not less than the length of the diagonal of the pixel opening PH. This further limits the size of the light-emitting device LD and also limits the size of the lens LE.

[0105] In some embodiments of the present disclosure, the ratio of the bottom diameter D to the arch height H of the spherical segment structure can be set to no less than 2:1 to ensure the light convergence effect. In addition, the ratio of the bottom diameter D to the arch height H can be limited to no more than 5:1.

[0106] The following table shows the aperture (i.e., bottom diameter) D and arch height H of the spherical segment lens formed with different numbers of droplets when printing with H0603A and H0603B materials on a liquid-repellent interface:

[0107] CSS is a material of a liquid-repellent interface, which is a polymer. The liquid-repellent interface may be the surface of the encapsulation layer TFE.

[0108] Taking into account the above-mentioned process limitations, the inventors of the present disclosure propose that the above-mentioned limitations on the light-emitting devices LD and lenses LE can be overcome by designing the arrangement of the light-emitting devices LD and using different processes in different situations to form light-emitting devices LD and lenses LE of different sizes. The details are as follows:

[0109] As shown in Figures 3-6 , the light-emitting units LU can be arranged in multiple columns along a first direction U, with each column containing multiple light-emitting units LU. Furthermore, the light-emitting units LU can be arranged in multiple rows along a second direction V, with each row containing multiple light-emitting units LU. In each light-emitting unit LU, the first light-emitting device LD1 is larger than the second light-emitting device LD2 and the third light-emitting device LD3. For example, the first light-emitting device LD1 emits blue light, the second light-emitting device LD2 emits red light, and the third light-emitting device LD3 emits green light. When arranging the light-emitting units LU, the first light-emitting device LD1 can be used as a reference. The first light-emitting device LD1 of each light-emitting unit LU can be arranged in an array along the first direction U and the second direction V, while the second light-emitting devices LD2 and the third light-emitting devices LD3 are distributed around the first light-emitting device LD1.

[0110] In some embodiments of the present disclosure, a spacing L2 between two adjacent light-emitting devices LD is no less than 22 μm, i.e., greater than or equal to 22 μm. The spacing L2 between two light-emitting devices LD is the same as the spacing between two adjacent pixel openings PH, and this spacing L2 is the maximum width of the pixel definition layer PDL between the two pixel openings PH. The pixel definition layer PDL can be patterned using a photolithography process to obtain the pixel openings PH. The inventors have discovered that using 22 μm as the upper limit for the size of the pixel definition layer PDL patterned using a photolithography process can reduce the risk of abnormalities in the pixel definition layer PDL pattern.

[0111] As shown in Figures 3 to 6, in order to extend the life of the first light-emitting device LD1, it is necessary to increase its area. To this end, the lower limit of the size of the first light-emitting device LD1 can be restricted. In some embodiments of the present disclosure, taking the first light-emitting device LD1 emitting blue light as an example, the boundary of its positive projection on the driving backplane BP is a polygon, which can be a rectangle or other shape, and the side length S of at least one side of the polygon is greater than 18μm; for example, the polygon is a square, and its side length S is greater than or equal to 18μm; or, the polygon is a rectangle, and the length of its long side or short side is greater than or equal to 18μm.

[0112] Under the aforementioned limitation of 18 μm, the pixel opening PH is relatively large, and it is difficult to form the first lens LE1 that can completely cover the pixel opening PH of the first light-emitting device LD1 through a photolithography process. Therefore, the first lens LE1 can be formed through a printing process, thereby being able to form the first lens LE1 that matches the size of the first light-emitting device LD1.

[0113] As shown in Figures 3-6 , the orthographic projection of the first light-emitting device LD1 on the driver backplane BP is larger than the orthographic projections of the second and third light-emitting devices LD2 and LD3. This results in a larger luminous range for the first light-emitting device LD1, which helps extend the lifespan of the first light-emitting device LD1. Accordingly, the orthographic projection of the first lens LE1 on the driver backplane BP is larger than the orthographic projections of the second and third lenses LE2 and LE3. That is, the range of the first lens LE1 is larger than the range of the second and third lenses LE2 and LE3. Furthermore, the distance L1 between two adjacent first lenses LE1 can be made smaller than the distance between either the second lens LE2 or the third lens LE3 and the first lens LE1, allowing for a closer arrangement of the first light-emitting device LD1 and the first lens LE1, which helps improve resolution.

[0114] Furthermore, the spacing L1 between two adjacent first lenses LE1 can be no less than 10 μm, i.e., greater than or equal to 10 μm. When forming the first lenses LE1 through the printing process, the droplets of material forming the lens LE have a certain flying speed. When contacting the printed surface (e.g., the surface of the encapsulation layer TFE away from the driver backplate BP), they spread. This means that due to inertia, the spreading angle becomes smaller than the contact angle, indicating a tendency for the droplets to flatten. After the spreading angle reaches its maximum value, the droplets contract under the influence of surface tension, and the spreading angle ultimately stabilizes near the contact angle, forming the lens LE. This 10 μm limit prevents the droplets of adjacent first lenses LE1 from contacting and joining during the spreading process, thereby ensuring the independence of each lens LE.

[0115] As shown in Figures 3 to 6, in some embodiments of the present disclosure, the display panel can be divided into a plurality of pixel areas PA distributed in an array along a first direction U and a second direction V, and a light-emitting unit LU can be located in one pixel area PA, that is, a first light-emitting device LD1 can be set in one pixel area PA, and at least one of a second light-emitting device LD2 and a third light-emitting device LD3 can also be set. At the same time, the boundary of the first light-emitting device LD1 can be made to partially coincide with the boundary of the pixel area PA, that is, the boundary of the first light-emitting device LD1 can be used to define the boundary of the pixel area PA, and the boundary of the first light-emitting device LD1 is the boundary of its positive projection on the driving backplane BP or the substrate SU; for example, the boundary of the first light-emitting device LD1 is rectangular, and the extension lines of each side thereof intersect with the extension lines of the boundaries of adjacent first light-emitting devices LD1, and a plurality of rectangular pixel areas PA can be divided in the display panel, and the boundary of the first light-emitting device LD1 is located on the boundary of the pixel area PA. In this way, it is beneficial to make full use of the space in the pixel area PA and increase the range of the first light-emitting device LD1. For example, in some embodiments, the range of the first light-emitting device LD1 can be made greater than 30% of the range of the pixel area PA where it is located. Of course, it can also be 40% or higher.

[0116] Furthermore, based on the above-mentioned distribution of the pixel area PA and the light-emitting device LD, the orthographic projection of the first light-emitting device LD1 on the driving backplane BP is located within the orthographic projection of the first lens LE1 overlapping with it on the driving backplane BP, that is, the first lens LE1 is not smaller than the first light-emitting device LD1 overlapping with it, and a portion of the boundary of the first light-emitting device LD1 can serve as a portion of the boundary of the pixel area PA, so that one first lens LE1 can overlap with multiple adjacent pixel areas PA, but one first lens LE1 only overlaps with one light-emitting device LD.

[0117] As shown in Figure 3, in some embodiments of the present disclosure, a display panel with the first arrangement described above is adopted; the light-emitting unit LU may include a first light-emitting unit LU1 and a second light-emitting unit LU2, the first light-emitting unit LU1 includes a first light-emitting device LD1 and a second light-emitting device LD2, but no third light-emitting device LD3; the second light-emitting unit LU2 includes a first light-emitting device LD1 and a third light-emitting device LD3, but no second light-emitting device LD2.

[0118] The spacing distance X between two adjacent light-emitting units LU can be not less than 99.2 μm (i.e., greater than or equal to 99.2 μm) and less than 145.6 μm. For example, the spacing distance between two adjacent light-emitting units LU is 99.2 μm, 100 μm, 120 μm, 145.6 μm, etc. The spacing distance X between two adjacent light-emitting units LU is the sum of the width S of the pixel opening PH of the first light-emitting device LD1 of the two adjacent light-emitting units LU in the first direction U or the second direction V and the width of the pixel definition layer PDL between the two pixel openings PH.

[0119] As shown in Figure 3, the orthographic projections of the second light-emitting device LD2 and the third light-emitting device LD3 on the driver backplane BP are polygonal, and at least one side of the polygon has a length of no more than 18 μm, i.e., less than or equal to 18 μm. The pixel opening PH of the second light-emitting device LD2 and the third light-emitting device LD3 can be formed using a photolithography process. Furthermore, the maximum distance between two points within the boundary of the orthographic projection of the same second lens LE2 on the driver backplane BP is no more than 25 μm; and the maximum distance between two points within the boundary of the orthographic projection of the same third lens LE3 on the driver backplane BP is no more than 25 μm. Given these dimensions, the second lens LE2 and the third lens LE3 can be formed using a photolithography process. Of course, as shown in Figure 4, the second lens LE2 and the third lens LE3 can also be omitted.

[0120] As shown in FIG3 , in some embodiments of the present disclosure, the spacing distance X between two adjacent light-emitting units LU can be no less than 145.6 μm, that is, greater than or equal to 145.6 μm. The orthographic projections of the second light-emitting device LD2 and the third light-emitting device LD3 on the driver backplane BP are polygonal, and the length of at least one side of the polygon is greater than 18 μm. The pixel opening PH of the second light-emitting device LD2 and the third light-emitting device LD3 can be formed by a photolithography process. At the same time, the maximum distance between two points on the boundary of the orthographic projection of the same second lens LE2 on the driver backplane BP is greater than 25 μm; the maximum distance between two points on the boundary of the orthographic projection of the same third lens LE3 on the driver backplane BP is greater than 25 μm. At this size, the second lens LE2 and the third lens LE3 can be formed by a printing process.

[0121] As shown in FIG5 and FIG6 , for a display panel adopting the second arrangement described above, each light emitting unit LU may include three light emitting devices, namely, a first light emitting device LD1 , a second light emitting device LD2 and a third light emitting device LD3 .

[0122] In some embodiments of the present disclosure, the spacing between two adjacent light-emitting units LU can be no less than 145.6 μm (i.e., greater than or equal to 145.6 μm) and less than 187 μm. The orthographic projections of the second light-emitting device LD2 and the third light-emitting device LD3 on the driver backplane BP are polygonal, and the length of at least one side of the polygon is no greater than 18 μm, i.e., less than or equal to 18 μm. The pixel opening PH of the first light-emitting device LD1, the second light-emitting device LD2, and the third light-emitting device LD3 can be formed by a photolithography process. At the same time, the maximum distance between two points on the boundary of the orthographic projection of the same second lens LE2 on the driver backplane BP is no greater than 25 μm, i.e., less than or equal to 25 μm; the maximum distance between two points on the boundary of the orthographic projection of the same third lens LE3 on the driver backplane BP is no greater than 25 μm, i.e., less than or equal to 25 μm. At this size, the second lens LE2 and the third lens LE3 can be formed by a photolithography process.

[0123] In some embodiments of the present disclosure, the distance between two adjacent light-emitting units LU can be no less than 187 μm, that is, greater than or equal to 187 μm. The orthographic projections of the second light-emitting device LD2 and the third light-emitting device LD3 on the driver backplane BP can be polygonal, with at least one side of the polygon having a length greater than 18 μm. Furthermore, the maximum distance between two points within the orthographic projection of the same second lens LE2 on the driver backplane BP is greater than 25 μm; and the maximum distance between two points within the orthographic projection of the same third lens LE3 on the driver backplane BP is greater than 25 μm. At these dimensions, the second lens LE2 and the third lens LE3 can be formed using a printing process.

[0124] The following example illustrates how to determine the above values, taking the case where the pixel openings PH of each light-emitting device are all square and the lens LE is a spherical segment structure.

[0125] As shown in FIG3 , for a given spacing distance X, the diameter D of the first lens LE1 is the difference between the spacing distance X and the spacing L1 between two adjacent first lenses LE1 , that is, D = X - L1. If the spacing L1 is 10 μm, then D = X - 10.

[0126] The spacing L2 between adjacent pixel openings PH can be limited to greater than 22 μm. When X is too small, the side length d of the positive projection of the pixel openings PH of the second light-emitting device LD2 and the third light-emitting device LD3 on the driving backplane BP will be less than 5 μm, which exceeds the ability to form the light-emitting layer EL through the evaporation process and cannot be prepared.

[0127] If L2 is 22 μm, the following relationship can be obtained: D = X-10; 2 1 / 2 X=D+22+2 1 / 2 d+22; d≥5;

[0128] It can be solved to obtain X as 99.2. Therefore, when the spacing distance X is less than 99.2 μm, the light-emitting devices cannot be properly arranged in the space. However, when the spacing distance X is greater than or equal to 99.2 μm, the light-emitting devices can be properly arranged. Combined with the above restrictions on the first light-emitting device LD1 and the first lens LE1, the first lens LE1 can be manufactured using a printing solution, and the second lens LE2 and the third lens LE3 can be formed using a photolithography process. The diameter r of the bottom surface of the second lens LE2 and the third lens LE3 is smaller than the diameter D of the bottom surface of the first lens LE1.

[0129] When the spacing distance X is greater than 99.2 μm, as the light emitting device LD increases, the pixel area PA also increases, so that three light emitting devices LD can be arranged in the same pixel area PA; therefore, the following relationship is obtained: D = X-10; X = D / 2 1 / 2 +22+d+22; d≥5;

[0130] The solution is X, which is 145.6 μm. When the spacing distance X is less than 145.6 μm, there is insufficient space within the pixel area PA to accommodate three light-emitting devices LD. Only two light-emitting devices LD can be accommodated, meaning that each light-emitting unit LU includes only two light-emitting devices LD. However, when the spacing distance X is equal to or greater than 145.6 μm, three light-emitting devices LD can be accommodated within the pixel area PA, meaning that each light-emitting unit LU can include three light-emitting devices LD. The first lens LE1 can then be fabricated using a printing process, while the second and third lenses LE2 and LE3 can be fabricated using a photolithography process. Within this size range, although three light-emitting devices LD can be accommodated within a pixel area PA, the aperture ratio of two light-emitting devices LD is greater than that of three. For example, in an arrangement where a light-emitting unit LU includes three light-emitting devices LD, the aperture ratio of the pixel area PA can be 43.6%, while in an arrangement where a light-emitting unit LU includes two light-emitting devices, the aperture ratio of the pixel area PA is 45%. The aperture ratio herein refers to the ratio of the total area of ​​all pixel openings PH in a pixel area PA to the area of ​​the pixel area PA.

[0131] Of course, when the separation distance X is equal to or greater than 145.6 μm, two light-emitting devices LD can also be arranged within the pixel area PA, that is, the second light-emitting device LD2 and the third light-emitting device LD3 are not located in the same pixel area PA. In this case, the space within the pixel area PA is larger, resulting in larger sizes for the second lens LE2 and the third lens LE3 corresponding to the second and third light-emitting devices LD2 and LD3. Therefore, the first lens LE1 can be manufactured using a printing process, and the second and third lenses LE2 and LE3 can be manufactured using a printing process. For example, when the separation distance X is 145.6 μm, for an arrangement in which one light-emitting unit LU includes two light-emitting devices, the side length of the orthographic projection of the pixel opening PH of the second and third light-emitting devices LD2 and LD3 on the driver backplane BP can reach 18.6 μm. In this case, it is difficult to form the lenses LE using photolithography. Therefore, the second and third lenses LE2 and LE3 can be formed using a printing process.

[0132] As shown in Figures 5 and 6, as the spacing distance X continues to increase, until three light-emitting devices are set in one pixel area PA, that is, when the second arrangement method mentioned above is adopted, that is, when one light-emitting unit LU includes a first light-emitting device LD1, a second light-emitting device LD2 and a third light-emitting device LD3, and the side length of the orthographic projection of the pixel opening PH of the second light-emitting device LD2 and the third light-emitting device LD3 on the driving backplane BP is equal to 18μm, then: D = X-10; X = D / 2 1 / 2 +22+d+22; d=18;

[0133] The resulting separation distance X is 187 μm. Therefore, when the separation distance X is less than 187 μm, the second and third lenses LE2 and LE3 corresponding to the second and third light-emitting devices LD2 and LD3 can be fabricated using photolithography. However, when the separation distance X is equal to or greater than 187 μm, the sizes of the second and third lenses LE2 and LE3 exceed the upper limit of photolithography, necessitating a printing process. This means that each lens LE can be fabricated using a printing process. Of course, when the separation distance X is equal to or greater than 187 μm, the light-emitting unit LU can also adopt the first type of arrangement, with each lens LE being fabricated using a printing process. Furthermore, within this size range, the aperture ratio of the first type of arrangement can still be greater than that of the second type of arrangement.

[0134] When the spacing distance X continues to increase, the second light-emitting device LD2 and the third light-emitting device LD3 in the second arrangement also increase accordingly, and when a certain spacing distance X is reached, the aperture ratio of the second arrangement is consistent with the aperture ratio of the first arrangement. At this time, the side length d' of the orthographic projection of the second light-emitting device LD2 and the third light-emitting device LD3 in the second arrangement on the driving backplane BP is twice the side length d of the orthographic projection of the second light-emitting device LD2 and the third light-emitting device LD3 in the first arrangement on the driving backplane BP. 1 / 2 times. Therefore: D-34-D / 2 1 / 2 =d′; D+10-(D+44) / 2 1 / 2 =d

[0135] It can be solved that D = 223.3 μm, and the spacing distance X is 233.3 μm.

[0136] For example, as shown in FIG3 , in some embodiments, when the spacing distance X is 123 μm and the first arrangement described above is used, the orthographic projection of the first light-emitting device LD1 on the driver backplane BP is a square with a side length of 80 μm, and the orthographic projections of the second and third light-emitting devices LD2 and LD3 on the driver backplane BP are squares with a side length of 12 μm. In this case, the aperture ratio of the pixel area PA is 43.3%. In contrast, using the existing arrangement of light-emitting devices at this size and without the lens LE, the aperture ratio is 40.73%.

[0137] As shown in Figure 3, when the spacing distance X is 104.4 and the first arrangement described above is used, the orthographic projection of the first light-emitting device LD1 on the driver backplane BP is a square with a side length S of 66.8μm, and the orthographic projections of the second and third light-emitting devices LD2 and LD3 on the driver backplane BP are squares with a side length d of 6.52μm. In this case, the aperture ratio of the pixel area PA is 41.3%. In contrast, using the existing arrangement of light-emitting devices at this size and without the lens LE, the aperture ratio is 32.9%.

[0138] The present disclosure provides a method for manufacturing a display panel. The display panel may adopt any of the display panels described above, and its specific structure will not be described in detail here. The manufacturing method may include steps S110 to S130, wherein:

[0139] Step S110: forming a driving backplane;

[0140] Step S120: forming a plurality of light-emitting devices on one side of the driver backplane; the light-emitting devices include a first light-emitting device, a second light-emitting device, and a third light-emitting device having different luminous colors; each light-emitting device is divided into a plurality of light-emitting units distributed in an array along a first direction and a second direction; a light-emitting unit includes at least one of the second light-emitting device and the third light-emitting device and the first light-emitting device; an orthographic projection area of ​​the first light-emitting device on the driver backplane is greater than four times an orthographic projection area of ​​either the second light-emitting device or the third light-emitting device on the driver backplane;

[0141] Step S130, forming a plurality of lenses distributed in an array on a side of the light-emitting device away from the driving backplane; the lenses include a first lens overlapping with the first light-emitting device, a second lens overlapping with the second light-emitting device, and a third lens overlapping with the third light-emitting device; the lenses shrink in a direction away from the driving backplane and are used to converge the light emitted by the light-emitting devices overlapping with the lenses; the orthographic projection of the first lens on the driving backplane is larger than the orthographic projections of the second lens and the third lens on the driving backplane; the spacing between two adjacent first lenses is smaller than the spacing between any one of the second lens and the third lens and the first lens; wherein the first lens is formed by a printing process.

[0142] In some embodiments of the present disclosure, a light-emitting unit includes two light-emitting devices; the light-emitting unit includes a first light-emitting unit and a second light-emitting unit alternately distributed in a first direction and a second direction. The light-emitting devices of the first light-emitting unit are the first light-emitting device and the second light-emitting device, and the light-emitting devices of the second light-emitting unit are the first light-emitting device and the third light-emitting device.

[0143] The distance between two adjacent light-emitting units is not less than 99.2 μm and less than 145.6 μm. The orthographic projections of the second and third light-emitting devices on the driver backplane are polygonal, and the length of at least one side of the polygon is not greater than 18 μm. The maximum distance between two points on the boundary of the orthographic projection of the same second lens on the driver backplane is not greater than 25 μm; the maximum distance between two points on the boundary of the orthographic projection of the same third lens on the driver backplane is not greater than 25 μm.

[0144] The second lens and the third lens may be formed by a photolithography process. The maximum distance between two points in the boundary of the orthographic projection of the same first lens on the driving backplane is not less than 25 μm.

[0145] In some embodiments of the present disclosure, a light-emitting unit includes two light-emitting devices; the light-emitting unit includes a first light-emitting unit and a second light-emitting unit alternately distributed in a first direction and a second direction. The light-emitting devices of the first light-emitting unit are the first light-emitting device and the second light-emitting device, and the light-emitting devices of the second light-emitting unit are the first light-emitting device and the third light-emitting device.

[0146] The distance between two adjacent light-emitting units is no less than 145.6 μm. The orthographic projections of the second and third light-emitting devices on the driver backplane are polygonal, and at least one side of the polygon has a length greater than 18 μm. The maximum distance between two points on the boundary of the orthographic projection of the same second lens on the driver backplane is greater than 25 μm; the maximum distance between two points on the boundary of the orthographic projection of the same third lens on the driver backplane is greater than 25 μm.

[0147] The second lens and the third lens are formed by a printing process.

[0148] In some embodiments of the present disclosure, a light-emitting unit includes three light-emitting devices, including a first light-emitting device, a second light-emitting device, and a third light-emitting device.

[0149] The distance between two adjacent light-emitting units is not less than 145.6 μm and less than 187 μm. The orthographic projections of the second and third light-emitting devices on the driver backplane are polygonal, and the length of at least one side of the polygon is not greater than 18 μm. The maximum distance between two points on the boundary of the orthographic projection of the same second lens on the driver backplane is not greater than 25 μm; the maximum distance between two points on the boundary of the orthographic projection of the same third lens on the driver backplane is not greater than 25 μm.

[0150] The second light emitting device and the third light emitting device are formed by a photolithography process.

[0151] In some embodiments of the present disclosure, a light-emitting unit includes three light-emitting devices, including a first light-emitting device, a second light-emitting device, and a third light-emitting device.

[0152] The distance between two adjacent light-emitting units is not less than 187 μm. The orthographic projections of the second and third light-emitting devices on the driver backplane are polygonal, and the length of at least one side of the polygon is greater than 18 μm. The maximum distance between two points on the boundary of the orthographic projection of the same second lens on the driver backplane is greater than 25 μm; the maximum distance between two points on the boundary of the orthographic projection of the same third lens on the driver backplane is greater than 25 μm.

[0153] The second lens and the third lens are formed by a printing process.

[0154] It should be noted that although the steps of the manufacturing method disclosed herein are described in a specific order in the accompanying drawings, this does not require or imply that the steps must be performed in this specific order, or that all steps must be performed to achieve the desired results. Additionally or alternatively, certain steps may be omitted, multiple steps may be combined into one step, and / or one step may be broken down into multiple steps.

[0155] The present disclosure also provides a display device, which may include a display panel according to any of the aforementioned embodiments. The display panel is a display panel according to any of the aforementioned embodiments. Its specific structure and beneficial effects can be found in the embodiments of the display panel described above and will not be further described here. The display device of the present disclosure may be a mobile phone, tablet computer, television, or wearable device such as a smartwatch, smart bracelet, virtual reality device, or other electronic device with a display function, which will not be listed here.

[0156] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered as exemplary only, with the true scope and spirit of the present disclosure being indicated by the appended claims.

Claims

1. A display panel, comprising: Drive backplane; A plurality of light-emitting devices are arranged on one side of the drive backplane; The light-emitting devices include a first light-emitting device, a second light-emitting device, and a third light-emitting device with different emission colors; each of the light-emitting devices is divided into a plurality of light-emitting units arranged in an array along a first direction and a second direction; one light-emitting unit includes at least one of the second light-emitting device and the third light-emitting device and the first light-emitting device; The area of the orthographic projection of the first light-emitting device on the drive backplane is more than 4 times the area of the orthographic projection of any one of the second light-emitting device and the third light-emitting device on the drive backplane; A plurality of lenses are arranged in an array on the side of the light-emitting devices away from the drive backplane; the lenses include a first lens overlapping with the first light-emitting device; the lenses contract along the direction away from the drive backplane and are used to converge the light emitted by the light-emitting devices overlapping with the lenses.

2. The display panel according to claim 1, wherein, The distance between two adjacent light-emitting devices is not less than 22 μm; the boundary of the orthographic projection of the first light-emitting device on the drive backplane is polygonal, and the length of at least one side of the polygon is greater than 18 μm; the maximum distance between two points in the boundary of the orthographic projection of the same first lens on the drive backplane is not less than 25 μm; the distance between two adjacent first lenses is not less than 10 μm.

3. The display panel according to claim 2, wherein, The lenses further include a second lens overlapping with the second light-emitting device and a third lens overlapping with the third light-emitting device; the orthographic projection of the first lens on the drive backplane is larger than the orthographic projections of the second lens and the third lens on the drive backplane; The distance between two adjacent first lenses is less than the distance between any one of the second lens and the third lens and the first lens.

4. The display panel according to claim 3, wherein, The number of light-emitting devices in one light-emitting unit is two; the light-emitting units include first light-emitting units and second light-emitting units alternately distributed in the first direction and the second direction; The light-emitting devices of the first light-emitting unit are the first light-emitting device and the second light-emitting device, and the light-emitting devices of the second light-emitting unit are the first light-emitting device and the third light- emitting device.

5. The display panel according to claim 3, wherein, The number of light-emitting devices in one light-emitting unit is three, and includes the first light-emitting device, the second light-emitting device, and the third light-emitting device.

6. The display panel according to claim 4, wherein, The interval distance between two adjacent light-emitting units is not less than 99.2 μm and less than 145.6 μm; The orthographic projections of the second light-emitting device and the third light-emitting device on the drive backplane are polygonal, and the length of at least one side of the polygon is not greater than 18 μm; The maximum distance between two points in the boundary of the orthographic projection of the same second lens on the drive backplane is not greater than 25 μm; the maximum distance between two points in the boundary of the orthographic projection of the same third lens on the drive backplane is not greater than 25 μm.

7. The display panel according to claim 4, wherein, The interval distance between two adjacent light-emitting units is not less than 145.6 μm; The orthographic projections of the second light-emitting device and the third light-emitting device on the drive backplane are polygonal, and the length of at least one side of the polygon is greater than 18 μm; The maximum distance between two points in the boundary of the orthographic projection of the same second lens on the driving backplane is greater than 25 μm; the maximum distance between two points in the boundary of the orthographic projection of the same third lens on the driving backplane is greater than 25 μm.

8. The display panel according to claim 5, wherein, The spacing distance between two adjacent light-emitting units is not less than 145.6 μm and less than 187 μm; The orthographic projections of the second light-emitting device and the third light-emitting device on the driving backplane are polygonal, and the length of at least one side of the polygon is not greater than 18 μm; The maximum distance between two points in the boundary of the orthographic projection of the same second lens on the driving backplane is not greater than 25 μm; the maximum distance between two points in the boundary of the orthographic projection of the same third lens on the driving backplane is not greater than 25 μm.

9. The display panel according to claim 5, wherein, The spacing distance between two adjacent light-emitting units is not less than 187 μm; The orthographic projections of the second light-emitting device and the third light-emitting device on the driving backplane are polygonal, and the length of at least one side of the polygon is greater than 18 μm; The maximum distance between two points in the boundary of the orthographic projection of the same second lens on the driving backplane is greater than 25 μm; the maximum distance between two points in the boundary of the orthographic projection of the same third lens on the driving backplane is greater than 25 μm.

10. The display panel according to claim 1, wherein, The lens has a spherical segment structure.

11. The display panel according to claim 10, wherein, The ratio of the bottom diameter to the arch height of the spherical segment structure is not less than 2:

1.

12. The display panel according to claim 1, wherein, The display panel is divided into a plurality of pixel regions arranged in an array along the first direction and the second direction, and a light-emitting unit is located in a pixel region; the area of the first light-emitting device is greater than 30% of the area of the pixel region where it is located.

13. The display panel according to claim 12, wherein, The boundary of the first light-emitting device partially coincides with the boundary of the pixel region.

14. The display panel according to claim 13, wherein, One first lens overlaps with a plurality of adjacent pixel regions, and one lens overlaps with only one light-emitting device.

15. The display panel according to any one of claims 1-14, wherein, The display panel further includes: An encapsulation layer covering the light-emitting device; The lens is disposed on the surface of the encapsulation layer away from the driving backplane; A light-transmitting layer covering the lens, and the refractive index of the light-transmitting layer is less than the refractive index of the lens.

16. A method for manufacturing a display panel, comprising: Form the driving backplane; Form a plurality of light-emitting devices on one side of the driving backplane; the light-emitting devices include a first light-emitting device, a second light-emitting device, and a third light-emitting device with different emission colors; each light-emitting device is divided into a plurality of light-emitting units arranged in an array along the first direction and the second direction; one light-emitting unit includes at least one of the second light-emitting device and the third light-emitting device and the first light-emitting device; The area of the orthographic projection of the first light-emitting device on the driving backplane is greater than 4 times the area of the orthographic projection of any one of the second light-emitting device and the third light-emitting device on the driving backplane; Form a plurality of lenses arranged in an array on the side of the light-emitting device away from the driving backplane; the lenses include a first lens overlapping with the first light-emitting device, and a second light-emitting A second lens overlapping with the first light-emitting device and a third lens overlapping with the third light-emitting device; the lenses contract in a direction away from the driving backplane and are configured to converge the light emitted by the light-emitting devices overlapping with the lenses; the orthographic projection of the first lens on the driving backplane is larger than the orthographic projections of the second lens and the third lens on the driving backplane; the distance between two adjacent first lenses is less than the distance between any one of the second lens and the third lens and the first lens; The first lens is formed by a printing process.

17. The manufacturing method according to claim 16, wherein, The number of light-emitting devices in one light-emitting unit is two; the light-emitting unit includes a first light-emitting unit and a second light-emitting unit that are alternately distributed in the first direction and the second direction; The light-emitting devices of the first light-emitting unit are the first light-emitting device and the second light-emitting device, and the light-emitting devices of the second light-emitting unit are the first light-emitting device and the third light-emitting device; The spacing distance between two adjacent light-emitting units is not less than 99.2 μm and less than 145.6 μm; The orthographic projections of the second light-emitting device and the third light-emitting device on the driving backplane are polygonal, and the length of at least one side of the polygon is not greater than 18 μm; The maximum distance between two points in the boundary of the orthographic projection of the same second lens on the driving backplane is not greater than 25 μm; the maximum distance between two points in the boundary of the orthographic projection of the same third lens on the driving backplane is not greater than 25 μm; The second lens and the third lens are formed by a lithography process.

18. The manufacturing method according to claim 16, wherein, The number of light-emitting devices in one light-emitting unit is two; the light-emitting unit includes a first light-emitting unit and a second light-emitting unit that are alternately distributed in the first direction and the second direction; The light-emitting devices of the first light-emitting unit are the first light-emitting device and the second light-emitting device, and the light-emitting devices of the second light-emitting unit are the first light-emitting device and the third light-emitting device; The spacing distance between two adjacent light-emitting units is not less than 145.6 μm; The orthographic projections of the second light-emitting device and the third light-emitting device on the driving backplane are polygonal, and the length of at least one side of the polygon is greater than 18 μm; The maximum distance between two points in the boundary of the orthographic projection of the same second lens on the driving backplane is the most The maximum distance between two points in the boundary of the orthographic projection of the same third lens on the driving backplane is greater than 25 μm; The second lens and the third lens are formed by a printing process.

19. The manufacturing method according to claim 16, wherein, The number of light-emitting devices in one light-emitting unit is three, and includes the first light-emitting device, the second light-emitting device, and the third light-emitting device; The spacing distance between two adjacent light-emitting units is not less than 145.6 μm and less than 187 μm; The orthographic projections of the second light-emitting device and the third light-emitting device on the driving backplane are polygonal, and the length of at least one side of the polygon is not greater than 18 μm; The maximum distance between two points in the boundary of the orthographic projection of the same second lens on the driving backplane is not greater than 25 μm; the maximum distance between two points in the boundary of the orthographic projection of the same third lens on the driving backplane is not greater than 25 μm; The second light-emitting device and the third light-emitting device are formed by a lithography process.

20. The manufacturing method according to claim 16, wherein, The number of light-emitting devices of one light-emitting unit is three, and includes the first light-emitting device, the second light-emitting device, and the third light-emitting device; The spacing distance between two adjacent light-emitting units is not less than 187 μm; The orthographic projections of the second light-emitting device and the third light-emitting device on the driving backplane are polygons, and the side length of at least one side of the polygon is greater than 18 μm; The maximum distance between two points in the boundary of the orthographic projection of the same second lens on the driving backplane is greater than 25 μm; the maximum distance between two points in the boundary of the orthographic projection of the same third lens on the driving backplane is greater than 25 μm; The second lens and the third lens are formed by a printing process.

21. A display device, comprising the display panel according to any one of claims 1-15.

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