Display panel, method for manufacturing display panel, and display device

Abstract

Embodiments of the present application provide a display panel, a preparation method of the display panel and a display device. The display panel comprises a substrate, a pixel definition layer comprising a pixel limiting portion and a pixel opening formed by the pixel limiting portion, a light-emitting layer comprising a plurality of light-emitting units, at least part of the light-emitting units being located in the pixel opening, an encapsulation layer for encapsulating the light-emitting units, a first adhesive layer provided on one side of the encapsulation layer, a first lens provided on a surface of the first adhesive layer away from the substrate, the first lens being convexly arranged in a direction away from the substrate, a polarizing functional layer provided on one side of the first adhesive layer, a second adhesive layer provided on one side of the polarizing functional layer, a second lens provided on a surface of the second adhesive layer away from the substrate, the second lens being convexly arranged in a direction away from the substrate, and a cover plate provided on one side of the second adhesive layer. The display panel, the preparation method of the display panel and the display device of the present application aim to improve the process performance of the display panel.

Description

Technical Field

[0001] This application relates to the field of display technology, and in particular to a display panel, a method for manufacturing the display panel, and a display device. Background Technology

[0002] Organic light-emitting diodes (OLEDs) and flat panel displays based on light-emitting diodes (LEDs) are widely used in various consumer electronics products such as mobile phones, televisions, laptops, and desktop computers due to their advantages such as high image quality, energy saving, thin body, and wide range of applications, becoming the mainstream of display devices.

[0003] However, the performance of current OLED display products needs to be improved. Summary of the Invention

[0004] This application provides a display panel, a method for manufacturing the display panel, and a display device, aiming to improve the process performance of the display panel.

[0005] An embodiment of the first aspect of this application provides a display panel, comprising: a substrate; a pixel defining layer disposed on one side of the substrate, the pixel defining layer including a pixel defining portion and a pixel opening formed by the pixel defining portion, the number of pixel openings being multiple; a light-emitting layer including multiple light-emitting units, the light-emitting units being disposed one-to-one with the pixel openings, and at least a portion of the light-emitting units being located within the pixel openings; an encapsulation layer disposed on the side of the light-emitting layer away from the substrate, the encapsulation layer being used to encapsulate the light-emitting units; a first adhesive layer disposed on the side of the encapsulation layer away from the substrate, the surface of the first adhesive layer away from the substrate having a first lens disposed thereon, the first lens being convex in the direction away from the substrate; a polarizing functional layer disposed on the side of the first adhesive layer away from the substrate; a second adhesive layer disposed on the side of the polarizing functional layer away from the substrate, the surface of the second adhesive layer away from the substrate having a second lens disposed thereon, the second lens being convex in the direction away from the substrate; and a cover plate disposed on the side of the second adhesive layer away from the polarizing functional layer.

[0006] According to an embodiment of the first aspect of this application, the orthographic projection of the first lens onto the substrate and the orthographic projection of the pixel opening onto the substrate at least partially overlap; and / or, the orthographic projection of the second lens onto the substrate and the orthographic projection of the pixel opening onto the substrate at least partially overlap.

[0007] According to any of the foregoing embodiments of the first aspect of this application, the orthographic projection of the pixel opening onto the substrate is located within the orthographic projection of the first lens onto the substrate; and / or, the orthographic projection of the pixel opening onto the substrate is located within the orthographic projection of the second lens onto the substrate.

[0008] According to any of the foregoing embodiments of the first aspect of this application, the orthographic projections of at least one first lens and at least one second lens onto the substrate at least partially overlap.

[0009] According to any of the foregoing embodiments of the first aspect of this application, a second lens is correspondingly provided on the side of each first lens that is away from the substrate.

[0010] According to any of the foregoing embodiments of the first aspect of this application, the orthographic projection of the first lens onto the substrate is located within the orthographic projection of the second lens onto the substrate.

[0011] According to any of the foregoing embodiments of the first aspect of this application, the orthogonal projection area of ​​the first lens on the substrate is smaller than the orthogonal projection area of ​​the second lens on the substrate.

[0012] According to any of the foregoing embodiments of the first aspect of this application, the first lens and / or the second lens are disposed at equal intervals on the orthogonal projection boundary of the substrate and the pixel opening is disposed on the orthogonal projection boundary of the substrate.

[0013] According to any of the foregoing embodiments of the first aspect of this application, the refractive index of the second adhesive layer is less than the refractive index of the second lens.

[0014] According to any of the foregoing embodiments of the first aspect of this application, a touch function layer is provided between the encapsulation layer and the first adhesive layer.

[0015] According to any of the foregoing embodiments of the first aspect of this application, the refractive index of the first lens is greater than 1, and / or the refractive index of the second lens is greater than 1.

[0016] According to any of the foregoing embodiments of the first aspect of this application, the refractive index of the first lens is 1.2 to 1.6.

[0017] According to any of the foregoing embodiments of the first aspect of this application, the refractive index of the second lens is 1.2 to 1.6.

[0018] According to any of the foregoing embodiments of the first aspect of this application, a plurality of second lenses are sequentially arranged adjacent to each other; and / or, a plurality of first lenses are spaced apart, or, a plurality of first lenses are sequentially arranged adjacent to each other.

[0019] The second aspect of this application also provides a method for manufacturing a display panel, comprising:

[0020] A pixel definition layer is prepared on one side of the substrate. The pixel definition layer includes a pixel defining portion and a pixel opening formed by the pixel defining portion. The number of pixel openings is set to multiple.

[0021] A light-emitting layer is prepared on the side of the pixel definition layer away from the substrate. The light-emitting layer includes a plurality of light-emitting units, each of which is disposed in correspondence with a pixel opening, and at least a portion of the light-emitting unit is located inside the pixel opening.

[0022] An encapsulation layer is prepared on the side of the light-emitting layer that faces away from the substrate;

[0023] A first adhesive layer is prepared on the side of the encapsulation layer that is away from the substrate;

[0024] A first lens is fabricated on the side of the first adhesive layer away from the substrate using inkjet printing technology, and the first lens protrudes in the direction away from the substrate.

[0025] A polarizing functional layer is provided on the side of the first lens and the first adhesive layer that is away from the substrate;

[0026] A second adhesive layer is prepared on the side of the polarizing functional layer that is away from the substrate;

[0027] A second lens is fabricated on the surface of the second adhesive layer away from the substrate using inkjet printing technology, and the second lens protrudes along the direction away from the substrate.

[0028] A cover plate is provided on the side of the second lens and the second adhesive layer that is away from the substrate.

[0029] The embodiments of the third aspect of this application include the display panel provided by any of the first aspect embodiments described above, or the display panel prepared by any of the second aspect embodiments described above.

[0030] The display panel provided in this application includes a substrate, a pixel definition layer, a light-emitting layer, an encapsulation layer, a first adhesive layer, a polarizing functional layer, a second adhesive layer, and a cover plate. The pixel definition layer is disposed on one side of the substrate and includes a pixel defining portion and a pixel opening formed by the pixel defining portion. The pixel opening is used to accommodate the light-emitting units of the light-emitting layer, and the pixel defining portion is used to improve the light emission crosstalk between adjacent light-emitting units. At least a portion of the light-emitting unit is located within the pixel opening, enabling the light-emitting unit to emit light from the pixel opening to achieve the light-emitting display effect of the panel. The encapsulation layer is disposed on the side of the light-emitting layer away from the substrate to encapsulate each light-emitting unit of the light-emitting layer, providing encapsulation protection to the light-emitting unit and improving the problem of light-emitting unit failure and damage caused by water and oxygen intrusion. The first adhesive layer, the polarizing functional layer, the second adhesive layer, and the cover plate are sequentially stacked on the side of the encapsulation layer away from the substrate. The first adhesive layer can bond the polarizing functional layer to the encapsulation layer, and the polarizing functional layer can filter stray light to ensure the light emission effect of the light-emitting unit, thereby improving the display effect of the display panel. The second adhesive layer bonds the cover plate to the side of the polarizing functional layer facing away from the substrate, thus providing protection for all layers. The first adhesive layer has a first lens on its substrate-facing surface, and the second adhesive layer has a second lens on its substrate-facing surface. Both lenses protrude in the direction facing away from the substrate. As the emitted light from each light-emitting unit passes through the first and second adhesive layers sequentially, the first and second lenses deflect the emitted light at least twice, improving the light-gathering effect and thus enhancing the display panel's brightness and manufacturing performance. Attached Figure Description

[0031] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings, wherein the same or similar reference numerals denote the same or similar features.

[0032] Figure 1 This is a schematic diagram of the internal structure of a display panel in the prior art;

[0033] Figure 2 This is a schematic diagram of the structure of a display panel provided in an embodiment of this application;

[0034] Figure 3 This is a cross-sectional view of a display panel provided in an embodiment of this application;

[0035] Figure 4 This is a cross-sectional view of another display panel provided in an embodiment of this application;

[0036] Figure 5 This is a cross-sectional view of another display panel provided in the embodiments of this application;

[0037] Figure 6 This is a cross-sectional view of another display panel provided in an embodiment of this application;

[0038] Figure 7 This is a schematic flowchart of a method for manufacturing a display panel provided in an embodiment of this application;

[0039] Figures 8 to 13 This is a schematic diagram of the process structure of a method for manufacturing a display panel according to an embodiment of this application;

[0040] Figure 14 This is a schematic diagram of the process structure of another display panel manufacturing method provided in this application embodiment.

[0041] Explanation of reference numerals in the attached figures:

[0042] 100. Substrate;

[0043] 200, Pixel definition layer; 210, Pixel limiting part; 220, Pixel opening; 221, First pixel opening; 222, Second pixel opening; 223, Third pixel opening;

[0044] 300, Light-emitting layer; 310, Light-emitting unit; 311, First light-emitting unit; 312, Second light-emitting unit; 313, Third light-emitting unit; 320, First electrode; 330, Second electrode;

[0045] 400, Encapsulation layer;

[0046] 500, First adhesive layer; 510, First lens;

[0047] 600, Polarizing functional layer;

[0048] 700, Second adhesive layer; 710, Second lens;

[0049] 800, cover plate;

[0050] 900, Touch Function Layer. Detailed Implementation

[0051] The features and exemplary embodiments of various aspects of this application will now be described in detail. Numerous specific details are set forth in the following detailed description to provide a comprehensive understanding of this application. However, it will be apparent to those skilled in the art that this application can be implemented without requiring some of these specific details. The following description of embodiments is merely intended to provide a better understanding of this application by illustrating examples. In the accompanying drawings and the following description, at least some well-known structures and techniques are not shown to avoid unnecessarily obscuring the application; and, for clarity, the dimensions of some structures may be exaggerated. Furthermore, the features, structures, or characteristics described below can be combined in any suitable manner in one or more embodiments.

[0052] In the description of this application, it should be noted that, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," etc., indicating orientation or positional relationships are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0053] The directional terms appearing in the following description refer to the directions shown in the figures and are not intended to limit the specific structure of the embodiments of this application. It should also be noted in the description of this application that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0054] With the development of flexible display technology, flat panel display devices based on organic light-emitting diode (OLED) technology have become the mainstream in display devices due to their advantages such as high image quality, energy saving, thin body and wide range of applications, and are widely used in various consumer electronic products such as mobile phones, televisions, laptops, and desktop computers.

[0055] OLED is a self-emissive display device. Compared to traditional Liquid Crystal Display (LCD), OLED technology does not require a backlight and is self-emissive. OLED uses a thin layer of organic material and a glass substrate; when current flows through it, the organic material emits light. Therefore, OLED display panels can significantly save energy, be made lighter and thinner, withstand a wider range of temperature variations than LCD display panels, and have a wider viewing angle. OLED display panels are expected to become the next-generation flat panel display technology after LCD and are currently one of the most watched technologies in the flat panel display field.

[0056] Therefore, with the widespread application of OLED display panels, the performance requirements for OLED and other display panels have increased. Among them, the brightness requirement of the display panel has become one of the main factors in evaluating the performance of the display panel, which poses a huge challenge to the design and manufacturing of display panels.

[0057] like Figure 1 As shown, current display panels typically have a display layer 1, a pressure-sensitive adhesive layer 2, a polarizing functional layer 600, an optical adhesive layer 3, and a cover plate 800 stacked sequentially. The pressure-sensitive adhesive layer 2 and the optical adhesive layer 3 are both planar plate structures, which bond the polarizing functional layer 600 and the cover plate 800 to the display layer 1, respectively. However, when the display layer 1 emits light, the light transmittance of the polarizing functional layer 600 is low, resulting in some light loss after passing through it. This leads to a low overall light emission efficiency of the final display panel, resulting in insufficient brightness. The manufacturing process of the display panel still needs improvement.

[0058] To address the problems existing in the prior art, embodiments of this application provide a display panel, a method for manufacturing the display panel, and a display device, aiming to improve the process performance of the display panel. The following is in conjunction with... Figures 2 to 14 The display panel, the method for manufacturing the display panel, and the display device according to the embodiments of this application will be described in detail.

[0059] like Figure 2 and Figure 3As shown, an embodiment of the first aspect of this application provides a display panel, including: a substrate 100; a pixel definition layer 200 disposed on one side of the substrate 100, the pixel definition layer 200 including a pixel defining portion 210 and a pixel opening 220 formed by the pixel defining portion 210, the number of pixel openings 220 being multiple; a light-emitting layer 300 including a plurality of light-emitting units 310, the light-emitting units 310 being disposed one-to-one with the pixel openings 220, and at least a portion of the light-emitting units 310 being located within the pixel openings 220; and an encapsulation layer 400 disposed on the side of the light-emitting layer 300 facing away from the substrate 100, the encapsulation layer 400 being used to encapsulate the light-emitting units 310; the first An adhesive layer 500 is disposed on the side of the encapsulation layer 400 away from the substrate 100. A first lens 510 is disposed on the surface of the first adhesive layer 500 away from the substrate 100, and the first lens 510 protrudes in the direction away from the substrate 100. A polarizing functional layer 600 is disposed on the side of the first adhesive layer 500 away from the substrate 100. A second adhesive layer 700 is disposed on the side of the polarizing functional layer 600 away from the substrate 100. A second lens 710 is disposed on the surface of the second adhesive layer 700 away from the substrate 100, and the second lens 710 protrudes in the direction away from the substrate 100. A cover plate 800 is disposed on the side of the second adhesive layer 700 away from the polarizing functional layer 600.

[0060] The display panel provided in this application includes a substrate 100, a pixel definition layer 200, a light-emitting layer 300, an encapsulation layer 400, a first adhesive layer 500, a polarizing functional layer 600, a second adhesive layer 700, and a cover plate 800. The pixel definition layer 200 is disposed on one side of the substrate 100 and includes a pixel limiting portion 210 and a pixel opening 220 formed by the pixel limiting portion 210. The pixel opening 220 is used to accommodate the light-emitting unit 310 of the light-emitting layer 300. The pixel limiting portion 210 is used to improve the light emission crosstalk between adjacent light-emitting units 310. At least a portion of the light-emitting unit 310 is located within the pixel opening 220, so that the light-emitting unit 310 can emit light from the pixel opening 220 to achieve the light-emitting display effect of the panel. The encapsulation layer 400 is disposed on the side of the light-emitting layer 300 away from the substrate 100 to encapsulate each light-emitting unit 310 of the light-emitting layer 300, providing encapsulation protection to the light-emitting unit 310 to improve the problem of light-emitting unit failure and damage caused by water and oxygen intrusion, thereby ensuring that the display panel can have a longer service life, reducing the later maintenance and repair costs, and thus improving the process performance of the display panel.

[0061] The first adhesive layer 500, the polarizing functional layer 600, the second adhesive layer 700, and the cover plate 800 are sequentially stacked on the side of the encapsulation layer 400 facing away from the substrate 100. The first adhesive layer 500 can bond the polarizing functional layer 600 to the encapsulation layer 400. During the use of the display panel, the polarizing functional layer 600 can filter stray light, reduce the influence of external stray light on the emitted light of the light-emitting unit 310, so as to ensure the light emission effect of the light-emitting unit 310 and thus improve the display. The second adhesive layer 700 adheres the cover plate 800 to the side of the polarizing functional layer 600 facing away from the substrate 100. The cover plate 800 covers the substrate 100, pixel definition layer 200, light-emitting layer 300, encapsulation layer 400, first adhesive layer 500, polarizing functional layer 600, and second adhesive layer 700, thus protecting these layers and preventing external impurities from entering the display panel, thereby reducing the impact of external impurities on the display effect. Furthermore, when the display panel is subjected to a severe impact, the cover plate 800 will be impacted first. The cover plate 800 can block most of the impact force, thereby reducing the probability of damage to the internal layers and achieving a protective effect on other layer structures.

[0062] A first lens 510 is disposed on the surface of the first adhesive layer 500 away from the substrate 100, and a second lens 710 is disposed on the surface of the second adhesive layer 700 away from the substrate 100. Both the first lens 510 and the second lens 710 protrude in the direction away from the substrate 100. In the layer structure of the first adhesive layer 500, the space between adjacent first lenses 510 is an air medium. Similarly, in the layer structure of the second adhesive layer 700, the space between adjacent second lenses 710 is also an air medium. Since the optical adhesive materials of the first lens 510 and the second lens 710 have different refractive indices than the air medium, light rays will be deflected toward the first lens 510 or the second lens 710 when passing through the first adhesive layer 500 or the second adhesive layer 700, thereby achieving the focusing of light rays within the first lens 510 and the second lens 710. After the emitted light from each light-emitting unit 310 of the light-emitting layer 300 passes through the first adhesive layer 500 and the second adhesive layer 700 in sequence, the first lens 510 and the second lens 710 can deflect the emitted light at least twice, further improving the light-gathering effect of the emitted light, thereby improving the display brightness of the display panel and improving the process performance of the display panel.

[0063] Furthermore, by integrating the first lens 510 into the first adhesive layer 500 and the second lens 710 into the second adhesive layer 700, the first adhesive layer 500 and the second adhesive layer 700 can not only satisfy the bonding effect for the polarizing functional layer 600 and the cover plate 800, but also achieve the focusing effect for the light emitted from each light-emitting unit 310 of the light-emitting layer 300, without increasing the overall thickness of the display panel, thus ensuring the overall thinness and lightness of the display panel and further improving the process performance of the display panel.

[0064] In embodiments of this application, the substrate 100 may include a substrate and a first conductive layer, a second conductive layer, and a third conductive layer disposed on one side of the substrate and stacked thereon. An insulating layer is disposed between adjacent conductive layers. Optionally, a driving device layer is disposed on the substrate, and a pixel driving circuit is disposed within the driving device layer. The pixel driving circuit includes a transistor and a storage capacitor. The transistor includes a semiconductor, a gate, a source, and a drain. The storage capacitor includes a first electrode and a second electrode. As an example, the gate and the first electrode may be located on the first conductive layer, the second electrode may be located on the second conductive layer, and the source and drain may be located on the third conductive layer.

[0065] In other alternative embodiments, please refer to [the relevant documentation]. Figure 3 and Figure 9 The light-emitting layer 300 also includes a plurality of first electrodes 320 and second electrodes 330. The plurality of first electrodes 320 are respectively disposed in correspondence with a plurality of light-emitting units 310, and each first electrode 320 is connected to the side of the corresponding light-emitting unit 310 near the substrate 100. The second electrode 330 is an integral layer structure that covers the side of the plurality of light-emitting units 310 away from the substrate 100. By setting the first electrodes 320 and the second electrodes 330, the light-emitting units 310 can be driven to emit light, thereby realizing the display effect of the display panel.

[0066] In other alternative embodiments, such as Figure 2 and Figure 3 As shown, the multiple pixel openings 220 include a first pixel opening 221, a second pixel opening 222, and a third pixel opening 223. The multiple light-emitting units 310 include a first light-emitting unit 311, a second light-emitting unit 312, and a third light-emitting unit 313. The first light-emitting unit 311 can be located in the first pixel opening 221, the second light-emitting unit 312 can be located in the second pixel opening 222, and the third light-emitting unit 313 can be located in the third pixel opening 223. The first light-emitting unit 311, the second light-emitting unit 312, and the third light-emitting unit 313 emit different colors; for example, the first light-emitting unit 311 emits red light, the second light-emitting unit 312 emits green light, and the third light-emitting unit 313 emits blue light to achieve a color display on the display panel.

[0067] In other alternative embodiments, the encapsulation layer 400 may include a first encapsulation layer, a second encapsulation layer, and a third encapsulation layer sequentially stacked in a direction away from the substrate. The materials of the first and third encapsulation layers may include inorganic materials, giving them good density and improving the sealing effect. The material of the second encapsulation layer may include organic materials, giving it a greater thickness and allowing for adjustment of the surface flatness of the encapsulation layer.

[0068] like Figure 2 and Figure 3 As shown, in some alternative embodiments, the surfaces of the first lens 510 and the second lens 710 facing the cover plate 800 are both curved, so that the first lens 510 and the second lens 710 form a partially spherical shape. This shape of the first lens 510 and the second lens 710 is easier to manufacture. Forming the first lens 510 on the surface of the first adhesive layer 500 and the second lens 710 on the surface of the second adhesive layer 700 requires fewer process steps, reducing the overall manufacturing difficulty of the display panel and improving the manufacturing efficiency of the display panel. Optionally, the shape of the first lens 510 and the second lens 710 facing the cover plate 800 may also include a columnar structure, which can also achieve a focusing effect on the light emitted from the light-emitting unit 310.

[0069] like Figure 3 As shown, in some alternative embodiments, the orthographic projection of the first lens 510 onto the substrate 100 and the orthographic projection of the pixel opening 220 onto the substrate 100 at least partially overlap; and / or, the orthographic projection of the second lens 710 onto the substrate 100 and the orthographic projection of the pixel opening 220 onto the substrate 100 at least partially overlap.

[0070] It should be noted that at least partial overlap can be either full overlap or partial overlap.

[0071] In these optional embodiments, the orthographic projection of the first lens 510 onto the substrate 100 and the orthographic projection of the pixel opening 220 onto the substrate 100 at least partially overlap. That is, the orthographic projection of the first lens 510 onto the substrate 100 and the orthographic projection of the light-emitting unit 310 in the pixel opening 220 onto the substrate 100 at least partially overlap. When the light-emitting unit 310 emits light toward the first adhesive layer 500 along the thickness direction of the display panel, the emitted light from the light-emitting unit 310 can be emitted to the first lens 510, which is at least partially opposite to it, after passing through the pixel opening 220. This achieves the effect of focusing light within the first lens 510. If the pixel opening 220 and the light-emitting unit 310 are not opposite to the first lens 510, the light emitted by the light-emitting unit 310, which is far away in the horizontal direction, may not be refracted into the first lens 510, thus affecting the focusing effect. Therefore, the positioning of the first lens 510 further enhances its light-gathering effect on the light-emitting unit 310 within the pixel opening 220, thereby improving the display brightness of the display panel and enhancing the manufacturing performance of the display panel.

[0072] The orthographic projection of the second lens 710 onto the substrate 100 and the orthographic projection of the pixel opening 220 onto the substrate 100 overlap at least partially. That is, the orthographic projection of the second lens 710 onto the substrate 100 and the orthographic projection of the light-emitting unit 310 within the pixel opening 220 onto the substrate 100 overlap at least partially. After passing through the first adhesive layer 500, the emitted light from the light-emitting unit 310 can be emitted onto the second lens 710, which is at least partially opposite to the position of the light-emitting unit 310. This achieves the effect of focusing light within the second lens 710. Therefore, the second lens 710 is positioned opposite to the pixel opening 220 and the light-emitting unit 310. It can focus the emitted light after it has been focused by the first lens 510 for the second time, and it can also focus the emitted light that has not been focused by the first lens 510. This further improves the focusing effect of the emitted light, reduces the proportion of emitted light that has not been focused, further improves the display brightness of the display panel, and improves the process performance of the display panel.

[0073] Furthermore, at least a portion of the light-emitting unit 310 is disposed inside the pixel opening 220. When the light-emitting unit 310 emits light outward from the pixel opening 220, the inner surface of the pixel opening 220 can also concentrate the emitted light, so that the emitted light can be emitted in the direction of the first lens 510 and the second lens 710 opposite to the pixel opening 220, thus ensuring the concentrating effect of the first lens 510 and the second lens 710 on the emitted light.

[0074] like Figure 3As shown, in some alternative embodiments, the orthographic projection of the first lens 510 onto the substrate 100 and the orthographic projection of the second lens 710 onto the substrate 100 are at least partially overlapped. This allows some of the outgoing light rays to exit towards the second lens 710 after exiting the first lens 510, so that this portion of the outgoing light rays is directly focused into the second lens 710, further improving the focusing effect of the first lens 510 and the second lens 710 on the outgoing light rays.

[0075] In some alternative embodiments, the orthographic projection of the pixel opening 220 onto the substrate 100 lies within the orthographic projection of the first lens 510 onto the substrate 100; and / or, the orthographic projection of the pixel opening 220 onto the substrate 100 lies within the orthographic projection of the second lens 710 onto the substrate 100.

[0076] In these optional embodiments, the orthographic projection of the pixel opening 220 onto the substrate 100 is located within the orthographic projection of the first lens 510 onto the substrate 100. That is, the range of light emitted by the light-emitting unit 310 within the pixel opening 220 is completely within the orthographic projection of the first lens 510 onto the substrate 100. When the light-emitting unit 310 emits light outward from the pixel opening 220, more of its emitted light can fall within the range of the first lens 510, thereby further improving the focusing effect of the emitted light within the first lens 510 and further improving the display brightness of the display panel.

[0077] Similarly, when the orthographic projection of the pixel opening 220 onto the substrate 100 is within the orthographic projection of the second lens 710 onto the substrate 100, the second lens 710 can also focus most of the emitted light from the light-emitting unit 310, thereby further improving the focusing effect of the emitted light within the first lens 510 and further improving the display brightness of the display panel.

[0078] Therefore, the arrangement that the orthographic projection of at least one of the first lens 510 and the second lens 710 covers the orthographic projection of the pixel opening 220 can ensure that all the emitted light rays from the light-emitting unit 310 within the pixel opening 220 can be focused on at least one of them, thus ensuring the light-gathering effect of the display panel, further reducing the proportion of unfocused emitted light rays, thereby further improving the display brightness of the display panel and improving the process performance of the display panel.

[0079] In some alternative embodiments, at least one first lens 510 and at least one second lens 710 at least partially overlap in their orthogonal projections onto the substrate 100.

[0080] In these optional embodiments, when the emitted light from the light-emitting unit 310 passes through the first adhesive layer 500, the first lens 510 can focus the emitted light for the first time. Since at least one first lens 510 and at least one second lens 710 at least partially overlap in their orthogonal projections onto the substrate 100, a portion of the emitted light focused by the first lens 510 can be emitted to the position of the second lens 710 on the second adhesive layer 700, where the second lens 710 focuses the light a second time, thereby further improving the focusing effect on the emitted light and further improving the display brightness of the display panel, and improving the process performance of the display panel.

[0081] like Figure 3 As shown, in some alternative embodiments, each first lens 510 is provided with a second lens 710 on the side opposite to the substrate 100.

[0082] In these optional embodiments, after the light emitted from the light-emitting unit 310 is focused by each of the first lenses 510, the light emitted by each of the first lenses 510 can enter the corresponding second lens 710 for focusing, so that most of the emitted light can be focused twice, thereby improving the overall brightness of the display panel and enabling uniform light emission from all parts of the display panel, thus improving the process performance of the display panel.

[0083] In some alternative embodiments, the orthographic projection of the first lens 510 onto the substrate 100 lies within the orthographic projection of the second lens 710 onto the substrate 100.

[0084] In these optional embodiments, when the emitted light from the light-emitting unit 310 passes through the first adhesive layer 500, the first lens 510 can focus the emitted light. The focused emitted light is emitted within the range of the first lens 510. Since the orthographic projection of the first lens 510 onto the substrate 100 is located within the orthographic projection of the second lens 710 onto the substrate 100, the light emitted within the range of the first lens 510 can be emitted into the second lens 710 for further focusing. This improves the problem of light refraction in the second adhesive layer 700 in a direction away from the second lens 710, further enhances the focusing effect of the emitted light, further enhances the display brightness of the display panel, and improves the process performance of the display panel.

[0085] In some alternative embodiments, the projected area of ​​the first lens 510 on the substrate 100 is smaller than the projected area of ​​the second lens 710 on the substrate 100.

[0086] In these optional embodiments, the emitted light passes through the first adhesive layer 500, and a portion of the emitted light is converged at the first lens 510, while a portion of the high-angle light outside the range of the first lens 510 is refracted in other directions. Since the projected area of ​​the second lens 710 on the substrate 100 is larger than that of the first lens 510 on the substrate 100, the high-angle light outside the range of the first lens 510 and not converged by the first lens 510 can enter the range of the second lens 710, which has a larger coverage area, and be converged by the second lens 710, further increasing the range of converged light. After the light is converged twice by the first lens 510 and the second lens 710, most of the emitted light emitted by the light-emitting unit 310 is focused, improving the display brightness of the display panel and enhancing the process performance of the display panel.

[0087] In some alternative embodiments, the first lens 510 and / or the second lens 710 are equally spaced on the orthographic projection boundary of the substrate 100 and the pixel opening 220 on the orthographic projection boundary of the substrate 100.

[0088] In these optional embodiments, the first lens 510 and / or the second lens 710 are equally spaced on the orthographic projection boundary of the substrate 100 and the orthographic projection boundary of the pixel opening 220 on the substrate 100. That is, the shape of the first lens 510 and / or the second lens 710 is the same as the shape of the pixel opening 220 after being magnified at equal intervals. Therefore, the shape of the first lens 510 and / or the second lens 710 is adapted to the shape of the pixel opening 220. After the light-emitting unit 310 emits light through the pixel opening 220, the range of the emitted light is also basically consistent with the pixel opening 220. When the emitted light enters the first adhesive layer 500 and the second adhesive layer 700, the first lens 510 and / or the second lens 710, which are adapted in shape and larger in size, can achieve a better focusing effect on the emitted light, reduce the emitted light outside the range of the first lens 510 and / or the second lens 710, improve the display brightness of the display panel, and thus improve the process performance of the display panel.

[0089] It should be noted that the equal spacing setting means that each side of the first lens 510 and / or the second lens 710 is equally spaced from each side of the pixel opening 220. That is, the shape of the first lens 510 and / or the second lens 710 is the same as the shape of the pixel opening 220, with only a difference in size.

[0090] In some alternative embodiments, the refractive index of the second adhesive layer 700 is less than that of the second lens 710.

[0091] In these optional embodiments, as the emitted light enters the second lens 710 from the second adhesive layer 700, because the refractive index of the second adhesive layer 700 is lower than that of the second lens 710, the emitted light is deflected at the contact surface between the second adhesive layer 700 and the second lens 710, and then focused towards the inside of the second lens 710. Therefore, by setting the refractive indices of the second adhesive layer 700 and the second lens 710, the light-gathering effect can be further improved, thereby increasing the overall display brightness of the display panel.

[0092] like Figure 4 As shown, in some alternative embodiments, a touch function layer 900 is provided between the encapsulation layer 400 and the first adhesive layer 500.

[0093] In these optional embodiments, the touch function layer 900 is connected to the encapsulation layer 400 and bonded to the polarization function layer 600 through the first adhesive layer 500. The setting of the touch function layer 900 does not affect the bonding effect of the first adhesive layer 500 or the light focusing effect of the first adhesive layer 500 and the first lens 510. Furthermore, it can provide touch functionality for the display panel, thus enriching the functionality of the display panel and improving the process performance of the display panel.

[0094] In some alternative embodiments, the refractive index of the first lens 510 is greater than 1, and / or the refractive index of the second lens 710 is greater than 1.

[0095] In these optional embodiments, since the refractive index of the air medium is close to 1, when the refractive index of the first lens 510 and / or the second lens 710 is greater than 1, the light can be deflected towards the interior of the first lens 510 or the second lens 710 with a larger refractive index when passing through the first lens 510 or the second lens 710, thereby achieving a focusing effect within the first lens 510 or the second lens 710, improving the overall light focusing effect of the display panel, and thus improving the overall display brightness of the display panel.

[0096] In some alternative embodiments, the refractive index of the first lens 510 is 1.2 to 1.6.

[0097] In these optional embodiments, the minimum refractive index of the first lens 510 is set to 1.2, ensuring a sufficient difference between the refractive index of the first lens 510 and the refractive index of the air medium. This allows light to be deflected at a sufficient angle so that its exit direction is towards the interior of the first lens 510, achieving a focusing effect on the light within the first lens 510. Conversely, setting the maximum refractive index of the first lens 510 to 1.6 prevents the light from being deflected at an excessively large angle, causing it to exit towards the other side of the first lens 510, which also helps to focus the light within the first lens 510. Therefore, the refractive index range of the first lens 510 ensures its focusing effect, thereby guaranteeing the overall focusing effect of the display panel and improving the overall display brightness.

[0098] In some alternative embodiments, the refractive index of the second lens 710 is 1.2 to 1.6.

[0099] In these optional embodiments, the minimum refractive index of the second lens 710 is set to 1.2, ensuring a sufficient difference between the refractive index of the second lens 710 and the refractive index of the air medium. This allows light to be deflected at a sufficient angle so that its exit direction is towards the interior of the second lens 710, achieving a focusing effect on the light within the second lens 710. Conversely, setting the maximum refractive index of the second lens 710 to 1.6 prevents the light from being deflected at an excessively large angle, causing it to exit towards the other side of the second lens 710, which also helps to focus the light within the second lens 710. Therefore, the refractive index range of the second lens 710 ensures its focusing effect, thereby guaranteeing the overall focusing effect of the display panel and improving the overall display brightness.

[0100] Optionally, the refractive index of the first lens 510 and / or the second lens 710 may be 1.2, 1.25, 1.28, 1.3, 1.32, 1.35, 1.4, 1.45, 1.48, 1.5, 1.55, 1.58, 1.6, etc.

[0101] In some alternative embodiments, the refractive index of the second lens 710 is greater than that of the first lens 510, so that the light rays can be further focused after exiting the first lens 510 and reaching the second lens 710, thereby further improving the light-gathering effect.

[0102] like Figure 5 and Figure 6 As shown, in some alternative embodiments, a plurality of second lenses 710 are arranged adjacent to each other in sequence; and / or, a plurality of first lenses 510 are arranged at intervals, or, a plurality of first lenses 510 are arranged adjacent to each other in sequence.

[0103] In these optional embodiments, multiple second lenses 710 are arranged adjacent to each other in sequence, so that the second lenses 710 can cover all the light-emitting units 310, and the emitted light from the light-emitting layer 300 can be focused into each second lens 710, thereby improving the overall light-gathering effect and further improving the display brightness of the display panel.

[0104] like Figure 5 As shown, multiple first lenses 510 are spaced apart. Some of the emitted light rays are focused by the first lenses 510 and then reach multiple adjacent second lenses 710 for further focusing. Other large-angle light rays directly reach multiple adjacent second lenses 710 for focusing. Therefore, all emitted light rays are focused within the second lenses 710, ensuring that the display panel has sufficient display brightness. Furthermore, the spaced arrangement of multiple first lenses 510 reduces the manufacturing difficulty of the first lenses 510 and lowers the production cost.

[0105] like Figure 6 As shown, multiple first lenses 510 are arranged adjacently in sequence, so that the first lenses 510 can cover all the light-emitting units 310, and the emitted light from the light-emitting layer 300 can be focused into each first lens 510. After the emitted light is further emitted from each first lens 510, it reaches multiple second lenses 710 arranged adjacently in sequence for further comprehensive focusing. The two comprehensive focusing ensures the overall light focusing effect of the display panel, thereby further improving the display brightness of the display panel.

[0106] It should be noted that the adjacent lenses of the first lens 510 or the second lens 710 arranged in sequence are not completely fitted together. There is an air medium between the adjacent lenses to deflect the light towards the inside of the lens, thereby achieving a light-gathering effect.

[0107] Please refer to this as well. Figure 3 , Figures 7 to 13 The second aspect of this application also provides a method for manufacturing a display panel, such as... Figure 7 As shown, the method for manufacturing the display panel includes:

[0108] S100, such as Figure 8 As shown, a pixel definition layer 200 is prepared on one side of the substrate 100. The pixel definition layer 200 includes a pixel limiting portion 210 and a pixel opening 220 formed by the pixel limiting portion 210. The number of pixel openings 220 is set to be multiple.

[0109] The plurality of pixel openings 220 include a first pixel opening 221, a second pixel opening 222, and a third pixel opening 223.

[0110] S200, such as Figure 9 As shown, a light-emitting layer 300 is prepared on the side of the pixel definition layer 200 away from the substrate 100. The light-emitting layer 300 includes a plurality of light-emitting units 310. The light-emitting units 310 are arranged in a one-to-one correspondence with the pixel openings 220, and at least a portion of the light-emitting units 310 is located within the pixel openings 220.

[0111] The plurality of light-emitting units 310 include a first light-emitting unit 311, a second light-emitting unit 312 and a third light-emitting unit 313, which are respectively disposed inside the first pixel opening 221, the second pixel opening 222 and the third pixel opening 223 to emit light of different colors in order to realize the color display of the display panel.

[0112] S300, such as Figure 10 As shown, an encapsulation layer 400 is prepared on the side of the light-emitting layer 300 that is away from the substrate 100.

[0113] S400, such as Figure 11 As shown, a first adhesive layer 500 is prepared on the side of the encapsulation layer 400 opposite to the substrate 100.

[0114] S500, such as Figure 11 As shown, a first lens 510 is fabricated on the side of the first adhesive layer 500 away from the substrate 100 using inkjet printing technology. The first lens 510 protrudes in the direction away from the substrate 100.

[0115] In this configuration, multiple first lenses 510 are configured corresponding to multiple pixel openings 220, or multiple first lenses 510 are configured adjacent to each other in sequence.

[0116] S600, such as Figure 12 As shown, a polarizing functional layer 600 is provided on the side of the first lens 510 and the first adhesive layer 500 that is away from the substrate 100.

[0117] S700, such as Figure 13 As shown, a second adhesive layer 700 is prepared on the side of the polarizing functional layer 600 facing away from the substrate 100.

[0118] S800, such as Figure 13 As shown, a second lens 710 is fabricated on the surface of the second adhesive layer 700 away from the substrate 100 using inkjet printing technology. The second lens 710 protrudes in the direction away from the substrate 100.

[0119] In this configuration, multiple second lenses 710 are arranged corresponding to multiple pixel openings 220, or multiple second lenses 710 are arranged adjacent to each other in sequence.

[0120] S900, such as Figure 3As shown, a cover plate 800 is provided on the side of the second lens 710 and the second adhesive layer 700 away from the substrate 100, thereby forming the overall structure of the display panel.

[0121] In the display panel prepared in the embodiments of this application, the display panel includes a substrate 100, a pixel definition layer 200, a light-emitting layer 300, an encapsulation layer 400, a first adhesive layer 500, a polarizing functional layer 600, a second adhesive layer 700, and a cover plate 800. The pixel definition layer 200 is disposed on one side of the substrate 100 and includes a pixel limiting portion 210 and a pixel opening 220 formed by the pixel limiting portion 210. The pixel opening 220 is used to accommodate the light-emitting unit 310 of the light-emitting layer 300. The pixel limiting portion 210 is used to improve the light emission crosstalk of adjacent light-emitting units 310. At least a portion of the light-emitting unit 310 is located within the pixel opening 220, so that the light-emitting unit 310 can emit light from the pixel opening 220 to achieve the light-emitting display effect of the panel. The encapsulation layer 400 is disposed on the side of the light-emitting layer 300 facing away from the substrate 100 to encapsulate each light-emitting unit 310 of the light-emitting layer 300, providing encapsulation protection to the light-emitting unit 310 to improve the problem of light-emitting unit failure and damage caused by water and oxygen intrusion. The first adhesive layer 500, the polarizing functional layer 600, the second adhesive layer 700, and the cover plate 800 are sequentially stacked on the side of the encapsulation layer 400 facing away from the substrate 100. The first adhesive layer 500 can bond the polarizing functional layer 600 to the encapsulation layer 400. The polarizing functional layer 600 can filter stray light to ensure the light emission effect of the light-emitting unit 310, thereby improving the display effect of the display panel. The second adhesive layer 700 can bond the cover plate 800 to the side of the polarizing functional layer 600 facing away from the substrate 100, so that the cover plate 800 provides protection for each layer. The first adhesive layer 500 has a first lens 510 disposed on the surface opposite to the substrate 100, and the second adhesive layer 700 has a second lens 710 disposed on the surface opposite to the substrate 100. Both the first lens 510 and the second lens 710 protrude in the direction opposite to the substrate 100. When the emitted light from each light-emitting unit 310 passes through the first adhesive layer 500 and the second adhesive layer 700 in sequence, the first lens 510 and the second lens 710 can deflect the emitted light at least twice, thereby improving the light-gathering effect of the emitted light, thus improving the display brightness of the display panel and improving the process performance of the display panel.

[0122] In other alternative embodiments, such as Figure 14As shown, after step S300, i.e., after the encapsulation layer 400 is formed on the side of the light-emitting layer 300 facing away from the substrate 100, the process further includes forming a touch function layer 900 on the side of the encapsulation layer 400 facing away from the substrate 100, and forming a first adhesive layer 500 on the side of the touch function layer 900 facing away from the substrate 100. After forming the first adhesive layer 500, the polarizing function layer 600, the second adhesive layer 700, and the cover plate 800 are formed, ultimately forming as shown. Figure 4 The display panel structure is shown. The placement of the touch function layer 900 does not affect the bonding effect or the light-gathering effect of the first adhesive layer 500 and the first lens 510. Furthermore, it can provide touch functionality for the display panel, thus enriching the functionality of the display panel and improving its manufacturing process.

[0123] The embodiments of the third aspect of this application include the display panel provided by any of the first aspect embodiments, or the display panel prepared by any of the second aspect embodiments. Since the display device provided by the third aspect embodiments of this application includes the display panel of any of the first aspect embodiments and the preparation method of the display panel of any of the second aspect embodiments, the display device provided by the third aspect embodiments of this application has the beneficial effects of the display panel of any of the first aspect embodiments and the beneficial effects of the preparation method of the display panel of any of the second aspect embodiments, which will not be elaborated further here.

[0124] The display devices in this application include, but are not limited to, mobile phones, personal digital assistants (PDAs), tablet computers, e-books, televisions, access control systems, smart landline phones, control consoles, and other devices with display functions.

Claims

1. A display panel, characterized in that, include: substrate; A pixel definition layer is disposed on one side of the substrate. The pixel definition layer includes a pixel defining portion and a pixel opening formed by the pixel defining portion. The number of pixel openings is set to multiple. The light-emitting layer includes a plurality of light-emitting units, each of which is disposed in a one-to-one correspondence with a pixel opening, and at least a portion of each light-emitting unit is located within the pixel opening; An encapsulation layer is disposed on the side of the light-emitting layer opposite to the substrate, and the encapsulation layer is used to encapsulate the light-emitting unit; A first adhesive layer is disposed on the side of the encapsulation layer away from the substrate. A first lens is disposed on the surface of the first adhesive layer away from the substrate, and the first lens protrudes in the direction away from the substrate. A polarizing functional layer is disposed on the side of the first adhesive layer opposite to the substrate; The second adhesive layer is disposed on the side of the polarizing functional layer away from the substrate. A second lens is disposed on the surface of the second adhesive layer away from the substrate, and the second lens protrudes in the direction away from the substrate. A cover plate is disposed on the side of the second adhesive layer opposite to the polarizing functional layer.

2. The display panel according to claim 1, characterized in that, The orthographic projection of the first lens onto the substrate and the orthographic projection of the pixel opening onto the substrate at least partially overlap; And / or, the orthographic projection of the second lens onto the substrate and the orthographic projection of the pixel opening onto the substrate at least partially overlap; Preferably, the pixel opening is located within the orthographic projection of the first lens onto the substrate; And / or, the pixel opening is projected onto the substrate in a direction within the projection of the second lens onto the substrate.

3. The display panel according to claim 2, characterized in that, The orthographic projections of at least one of the first lenses and at least one of the second lenses onto the substrate at least partially overlap; Preferably, each of the first lenses has a corresponding second lens on the side facing away from the substrate; Preferably, the orthographic projection of the first lens onto the substrate is located within the orthographic projection of the second lens onto the substrate; Preferably, the projected area of ​​the first lens on the substrate is smaller than the projected area of ​​the second lens on the substrate.

4. The display panel according to claim 2, characterized in that, The first lens and / or the second lens are equally spaced on the orthographic projection boundary of the substrate and the pixel opening is equally spaced on the orthographic projection boundary of the substrate.

5. The display panel according to claim 1, characterized in that, The refractive index of the second adhesive layer is less than that of the second lens.

6. The display panel according to claim 1, characterized in that, A touch function layer is provided between the encapsulation layer and the first adhesive layer.

7. The display panel according to claim 1, characterized in that, The refractive index of the first lens is greater than 1, and / or the refractive index of the second lens is greater than 1; Preferably, the refractive index of the first lens is 1.2 to 1.6; Preferably, the refractive index of the second lens is 1.2 to 1.

6.

8. The display panel according to claim 1, characterized in that, Multiple second lenses are arranged adjacent to each other in sequence; And / or, a plurality of the first lenses are spaced apart, or a plurality of the first lenses are distributed adjacent to each other in sequence.

9. A method for manufacturing a display panel, characterized in that, include: A pixel definition layer is prepared on one side of a substrate. The pixel definition layer includes a pixel defining portion and a pixel opening formed by the pixel defining portion. The number of pixel openings is set to be multiple. A light-emitting layer is prepared on the side of the pixel definition layer opposite to the substrate. The light-emitting layer includes a plurality of light-emitting units, each of which is disposed in correspondence with a pixel opening, and at least a portion of the light-emitting unit is located within the pixel opening. An encapsulation layer is prepared on the side of the light-emitting layer that is opposite to the substrate; A first adhesive layer is prepared on the side of the encapsulation layer opposite to the substrate; A first lens is fabricated on the side of the first adhesive layer away from the substrate using inkjet printing technology, and the first lens protrudes in the direction away from the substrate. A polarizing functional layer is provided on the side of the first lens and the first adhesive layer that is away from the substrate; A second adhesive layer is prepared on the side of the polarizing functional layer opposite to the substrate; A second lens is fabricated on the surface of the second adhesive layer away from the substrate using inkjet printing technology, and the second lens protrudes in the direction away from the substrate. A cover plate is provided on the side of the second lens and the second adhesive layer that is away from the substrate.

10. A display device, characterized in that, The display device comprises the display panel according to any one of claims 1-8, or the display device comprises the display panel prepared according to claim 9.

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