Display panel and display device

Abstract

The invention discloses a display panel and a display device, and belongs to the technical field of display. The display panel is provided with a display area, the display area comprises a plurality of display subareas, and the display subareas are sequentially arranged from the center to the periphery of the display panel. The display panel comprises a driving backboard, a packaging layer, a plurality of light-emitting devices and a plurality of optical structures, the plurality of optical structures correspond to the plurality of light-emitting devices, and the optical structures are used for converging light emitted by the corresponding light-emitting devices. For any two different display subareas, the light converging capacity of the optical structures distributed in the display subarea closer to the center of the display panel is larger than that of the optical structures distributed in the display subarea more away from the center of the display panel. Therefore, the brightness of the display subarea closer to the center of the display panel is improved greatly, so that the problem of non-uniform light emission of the display panel is solved, and the brightness uniformity of the display panel is improved.

Description

Technical Field

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

[0002] Organic Light Emitting Diode (OLED) is a current-type organic light-emitting device. OLED display panels are widely used in the display field due to their thin thickness, self-luminescence, high resolution, fast response speed, etc. In particular, silicon-based OLED display panels with small pixel size and high pixel density can be widely used in display products with high resolution and small size requirements such as augmented reality (AR) equipment and virtual reality (VR) equipment.

[0003] The silicon-based OLED display panel generally includes: a driving backplane, and a plurality of light-emitting devices located on the driving backplane, wherein the light-emitting devices include: a first electrode layer, an organic light-emitting layer, and a second electrode layer stacked in a direction away from the driving backplane. Among them, the second electrode layer is usually a whole layer, that is, the second electrode layers of the plurality of light-emitting devices are connected together. The periphery of the second electrode layer can be electrically connected to an auxiliary electrode ring, and the auxiliary electrode ring can be connected to a cathode signal. To this end, the second electrode layer can be connected to a cathode signal through the auxiliary electrode ring.

[0004] However, since the resistance value of the second electrode layer is relatively high and the transmission path of the cathode signal is relatively long, the attenuation of the cathode signal is more obvious at locations farther away from the auxiliary electrode ring, resulting in the cathode signal at locations farther away from the auxiliary electrode ring being different from the cathode signal at locations closer to the auxiliary electrode ring, which can easily cause uneven light emission in the silicon-based OLED display panel. Summary of the invention

[0005] The present application provides a display panel and a display device, which can solve the problem of uneven light emission of silicon-based OLED display panels. The technical solution is as follows:

[0006] In one aspect, a display panel is provided, the display panel having a display area, the display area including a plurality of display partitions, the plurality of display partitions being arranged sequentially from the center to the periphery of the display panel; the display panel comprising: a driving backplane, an encapsulation layer, a plurality of light-emitting devices and a plurality of optical structures;

[0007] The plurality of light emitting devices are located on the same side of the driving backplane and are distributed in the display area, and the plurality of light emitting devices are electrically connected to the driving backplane;

[0008] The encapsulation layer is located on a side of the plurality of light-emitting devices away from the driving backplane;

[0009] The multiple optical structures are located on a side of the encapsulation layer away from the driving backplane, the multiple optical structures correspond to the multiple light-emitting devices, and the orthographic projections of the light-emitting devices on the driving backplane overlap with the orthographic projections of the corresponding light-emitting devices on the driving backplane, and the optical structures are used to converge the light emitted by the corresponding light-emitting devices;

[0010] Among them, for any two different display partitions, the optical structure distributed in the display partition closer to the center of the display panel has a greater ability to converge light than the optical structure distributed in the display partition further away from the center of the display panel.

[0011] Optionally, the optical structures distributed in the same display partition have the same light-gathering capabilities; and the light-gathering capabilities of the optical structures distributed in the multiple display partitions increase sequentially along the four sides of the display panel towards the center of the display panel.

[0012] Optionally, the plurality of optical structures are all plano-convex lenses, and the plano-convex lenses protrude outwards on a side away from the corresponding light-emitting device;

[0013] The sizes and materials of the plano-convex lenses distributed in the same display subarea are the same, and the sizes and / or materials of the plano-convex lenses distributed in different display subareas are different.

[0014] Optionally, when the plano-convex lenses distributed in different display partitions are made of the same material but have different sizes, for any two different display partitions, the arch height of the plano-convex lenses distributed in the display partition closer to the center of the display panel is greater than the arch height of the plano-convex lenses distributed in the display partition further away from the center of the display panel.

[0015] Optionally, the apertures of the plano-convex lenses distributed in different display subareas are all the same.

[0016] Optionally, when the materials of the plano-convex lenses distributed in different display partitions are the same but the sizes are different, for any two different display partitions, the aperture of the plano-convex lens distributed in the display partition closer to the center of the display panel is larger than the aperture of the plano-convex lens distributed in the display partition further away from the center of the display panel.

[0017] Optionally, the arch heights of the plano-convex lenses distributed in different display subareas are all the same.

[0018] Optionally, when the plano-convex lenses distributed in different display partitions are made of the same material but have different sizes, for any two different display partitions, the arch height of the plano-convex lenses distributed in the display partition closer to the center of the display panel is greater than the arch height of the plano-convex lenses distributed in the display partition further away from the center of the display panel; and the aperture of the plano-convex lenses distributed in the display partition closer to the center of the display panel is greater than the aperture of the plano-convex lenses distributed in the display partition further away from the center of the display panel.

[0019] Optionally, when the plano-convex lenses distributed in different display partitions are of the same size but made of different materials, for any two different display partitions, the refractive index of the plano-convex lens distributed in the display partition closer to the center of the display panel is greater than the refractive index of the plano-convex lens distributed in the display partition further away from the center of the display panel.

[0020] Optionally, when the sizes of the plano-convex lenses distributed in different display partitions are different and the materials are different, for any two different display partitions, the refractive index of the plano-convex lens distributed in the display partition closer to the center of the display panel is greater than the refractive index of the plano-convex lens distributed in the display partition further away from the center of the display panel; and for any two different display partitions, the arch height of the plano-convex lens distributed in the display partition closer to the center of the display panel is greater than the arch height of the plano-convex lens distributed in the display partition further away from the center of the display panel, and / or the aperture of the plano-convex lens distributed in the display partition closer to the center of the display panel is greater than the aperture of the plano-convex lens distributed in the display partition further away from the center of the display panel.

[0021] Optionally, there is a boundary line between any two adjacent display subareas, and the shape of the area surrounded by the boundary line is circular or elliptical.

[0022] Optionally, the display panel includes a first electrode layer, a pixel definition layer, an organic light emitting layer and a second electrode layer;

[0023] The first electrode layer is located at one side of the driving backplane, and the first electrode layer has a plurality of first electrodes that are separately arranged, and the plurality of first electrodes are electrically connected to the driving backplane;

[0024] The pixel definition layer is located on a side of the first electrode layer away from the driving backplane;

[0025] The organic light emitting layer is located on a side of the pixel definition layer away from the driving backplane;

[0026] The second electrode layer is located on a side of the organic light emitting layer away from the driving backplane;

[0027] The pixel definition layer has a plurality of pixel openings and a partition structure distributed between two adjacent pixel openings, and the partition structure is used to partition at least part of the organic material layer in the organic light-emitting layer.

[0028] Optionally, the display panel also has: a non-display area located outside the display area; the driving backplane has: an auxiliary electrode ring located in the non-display area, the auxiliary electrode ring is arranged around the display area, and the portion of the second electrode layer located in the non-display area is electrically connected to the auxiliary electrode ring.

[0029] Optionally, the display panel further comprises: a filter layer, a bonding layer and a protective cover plate;

[0030] The filter layer is located on a side of the encapsulation layer away from the driving backplane;

[0031] The plurality of optical structures are located on a side of the filter layer away from the driving back plate;

[0032] The adhesive layer is located on a side of the plurality of optical structures away from the driving back plate;

[0033] The protective cover plate is located on a side of the adhesive layer away from the driving back plate;

[0034] Wherein, the refractive index of the optical structure is greater than the refractive index of the bonding layer.

[0035] On the other hand, a display device is provided, comprising a driving chip and any one of the above-mentioned display panels, wherein the driving chip is electrically connected to the display panel.

[0036] The beneficial effects of the technical solution provided by this application include at least:

[0037] For any two different display partitions, the optical structure in the display partition closer to the center of the display panel can have a greater light convergence capability than the optical structure in the display partition farther from the center of the display panel. In this way, the brightness of the display partition closer to the center of the display panel is improved to a greater extent, so that the brightness of the display partition closer to the center of the display panel is approximately the same as the brightness of the display partition farther from the center of the display panel, thereby offsetting the brightness attenuation from the periphery to the center of the display panel caused by the attenuation of the cathode signal, thereby solving the problem of uneven light emission of the display panel and improving the brightness uniformity of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0039] Figure 1 It is a schematic diagram of a film layer structure of a display panel provided by the related technology;

[0040] Figure 2 is a top view of a display panel provided in an embodiment of the present application;

[0041] Figure 3 yes Figure 2 A schematic diagram of the film layer structure of the display panel at BB' is shown;

[0042] Figure 4 yes Figure 3 A partial enlarged view of the display panel at position C is shown;

[0043] Figure 5 yes Figure 3 Another partial enlarged view of the display panel at position C is shown;

[0044] Figure 6 yes Figure 3 Another partial enlarged view of the display panel at position C is shown;

[0045] Figure 7 yes Figure 3 Another partial enlarged view of the display panel at position C is shown;

[0046] Figure 8 yes Figure 3 Another partial enlarged view of the display panel at position C is shown;

[0047] Fig. 9 yes Figure 3 Another partial enlarged view of the display panel at position C is shown;

[0048] Fig.10 yes Figure 3 Another partial enlarged view of the display panel at position C is shown;

[0049] Fig.11 yes Figure 3 Another partial enlarged view of the display panel at position C is shown;

[0050] Fig.12 is a top view of another display panel provided in an embodiment of the present application;

[0051] Fig.13is a top view of another display panel provided in an embodiment of the present application;

[0052] Fig.14 is a top view of another display panel provided in an embodiment of the present application;

[0053] Fig.15 is a schematic diagram of a film layer structure of a display panel provided in an embodiment of the present application;

[0054] Fig.16 is a top view of another display panel provided in an embodiment of the present application;

[0055] Fig.17 It is a schematic diagram of the film layer structure of another display panel provided in an embodiment of the present application. DETAILED DESCRIPTION

[0056] In order to make the objectives, technical solutions and advantages of the present application clearer, the implementation methods of the present application will be further described in detail below with reference to the accompanying drawings.

[0057] In the related art, a silicon-based OLED display panel may generally include: a driving backplane, and a plurality of light-emitting devices located on one side of the driving backplane. The light-emitting device may include: a first electrode layer, an organic light-emitting layer, and a second electrode layer stacked in a direction away from the driving backplane. Among them, the organic light-emitting layer may be composed of a plurality of stacked sub-light-emitting layers, and each sub-light-emitting layer may include: a stacked hole injection layer, a hole transport layer, a light-emitting material layer, an electron transport layer, and an electron injection layer, and each sub-light-emitting layer may be connected in series through a charge generation layer. In this way, the color of the light emitted by the organic light-emitting layer may be determined by the plurality of sub-light-emitting layers. For example, a sub-light-emitting layer capable of emitting yellow light and a sub-light-emitting layer capable of emitting blue light may be stacked so that the organic light-emitting layer emits white light.

[0058] Wherein, the first electrode layer can be electrically connected to the driving backplane. When the corresponding voltage is applied to the first electrode layer and the second electrode layer, an electric field will be formed between the first electrode layer and the second electrode layer. In this way, the hole injection layer can inject holes into the hole transport layer, and the holes are transmitted to the light-emitting material layer through the hole transport layer. The electron injection layer can inject electrons into the electron transport layer, and the electrons are transmitted to the light-emitting material layer through the electron transport layer. The holes and electrons are combined into high-energy excitons in the light-emitting material layer, and the high-energy excitons are unstable and can easily transition to low-energy excitons and release energy. When releasing energy, photons are generated to emit light with a wavelength within a certain range. In the case where the organic light-emitting layer is composed of multiple sub-light-emitting layers, the charge generation layer used to connect each sub-light-emitting layer in series is usually made of a material with good conductivity, so that each sub-light-emitting layer can emit light, thereby making the light-emitting effect of the organic light-emitting layer better.

[0059] The organic light-emitting layers in the light-emitting devices are uniformly formed by evaporation through an evaporation process, that is, the sub-light-emitting layers and the charge generation layer in each light-emitting device are connected together. Since the charge generation layer has good conductivity, during the light-emitting process of a certain light-emitting device, the charge generation layer in this light-emitting device may generate lateral leakage current, causing the adjacent light-emitting device to emit light. Therefore, it is necessary to set a pixel definition layer with a partition structure between adjacent light-emitting devices to separate the light-emitting devices. The partition structure can isolate at least part of the organic material layer in the organic light-emitting layer, such as the charge generation layer, so as to have a better isolation effect on the lateral leakage current.

[0060] The second electrode layer in the light-emitting device is usually arranged as a whole layer, that is, the second electrode layers in each light-emitting device are electrically connected to each other. The periphery of the second electrode layer can be electrically connected to the auxiliary electrode ring, and the auxiliary electrode ring can be connected to the cathode signal, so the second electrode layer can be connected to the cathode signal through the auxiliary electrode ring.

[0061] However, since the resistance value of the second electrode layer set up as a whole layer is relatively high and the transmission path of the cathode signal is relatively long, especially for display panels of larger sizes, the transmission path of the cathode signal is longer. Therefore, the attenuation of the cathode signal is more obvious at positions farther away from the auxiliary electrode ring. This causes the cathode signal at positions farther away from the auxiliary electrode ring to be different from the cathode signal at positions closer to the auxiliary electrode ring, which can easily cause uneven light emission of the silicon-based OLED display panel.

[0062] Also, please refer to Figure 1 , at the partition structure 03, the second electrode layer 023 will have unevenness, which will cause the transmission path of the cathode signal to increase. In addition, the second electrode layer 023 will form a puncture 04 at the partition structure 03. The minimum distance L1 between the puncture 04 and the first electrode layer 021 is smaller than the minimum distance L2 between the second electrode layer 023 and the first electrode layer 021 in the light-emitting device 02. The part of the organic light-emitting layer 022 between the puncture 04 and the first electrode layer 021 is distorted, the film layer is thin, and the internal resistance is small. The current will preferentially pass through the part with smaller internal resistance. In this way, a part of the electrons in the second electrode layer 023 can enter the organic light-emitting layer 022 from the puncture 04 to recombine with holes to emit light, thereby causing leakage.

[0063] In this way, the second electrode layer has undulations at the partition structure, which causes the transmission path of the cathode signal to increase, and there is also puncture leakage in the second electrode layer, which will cause the transmission loss of the cathode signal in the second electrode layer to increase, resulting in more obvious attenuation of the cathode signal at positions farther away from the auxiliary electrode ring, and the cathode signal at positions farther away from the auxiliary electrode ring will be more different from the cathode signal at positions closer to the auxiliary electrode ring, which will cause uneven light emission of the silicon-based OLED display panel and poor brightness uniformity of the silicon-based OLED display panel.

[0064] The embodiment of the present application provides a display panel, which can be a silicon-based OLED display panel, and can solve the problem of uneven light emission of the display panel and improve the brightness uniformity of the display panel. Figures 2 to 4 , Figure 2 is a top view of a display panel provided in an embodiment of the present application, Figure 3 yes Figure 2 The schematic diagram of the film structure of the display panel at BB' is shown. Figure 4 yes Figure 3 The display panel is shown in a partial enlarged view at C. Here, Figure 2 and Figure 3 It is only a schematic diagram and does not represent the actual number of display partitions, nor does it represent the actual number of optical structures and light-emitting devices in each display partition.

[0065] The display panel 000 may have a display area 10, and the display area 10 may include a plurality of display subareas A, and the plurality of display subareas A may be sequentially arranged from the center to the periphery of the display panel 000. Figure 2 As shown, for any two adjacent display partitions A, the display partition A farther from the center of the display panel 000 may be disposed around the display partition A closer to the center of the display panel 000 .

[0066] It should be noted that the display area 10 of the display panel 000 may be an area for displaying images or texts, and the plurality of display areas A may also be areas for displaying images or texts. Figure 2 The number of display partitions A shown is five, and the actual number of display partitions A may be more than five or less than five, which is not limited in the embodiment of the present application.

[0067] The display panel 000 may include a driving backplane 100 , an encapsulation layer 200 , a plurality of light emitting devices 300 , and a plurality of optical structures 400 .

[0068] The plurality of light emitting devices 300 are located on the same side of the driving backplane 100, and the plurality of light emitting devices 300 can be distributed in the display area 10. The plurality of light emitting devices 300 can be electrically connected to the driving backplane 100, so that the driving backplane 100 can drive the plurality of light emitting devices 300 to emit light, so that the display panel 000 can display images.

[0069] The encapsulation layer 200 may be located on a side of the plurality of light emitting devices 300 away from the driving backplane 100 , and is used to encapsulate and protect the plurality of light emitting devices 300 , and prevent water and oxygen in the external environment from entering the light emitting devices 300 and causing damage to the light emitting devices 300 .

[0070] Multiple optical structures 400 can be located on the side of the encapsulation layer 200 away from the driving backplane 100, and the multiple optical structures 400 can correspond to the multiple light-emitting devices 300. The orthographic projection of the optical structure 400 on the driving backplane 100 can overlap with the orthographic projection of the corresponding light-emitting device 300 on the driving backplane 100. The optical structure 400 is used to converge the light emitted by the corresponding light-emitting device 300, thereby enhancing the brightness of the corresponding position of the light-emitting device 300 on the display panel 000.

[0071] Among them, the optical structures 400 distributed in different display partitions A have different light convergence capabilities, so that the brightness of each display partition A can be controlled separately. For any two different display partitions A, the light convergence capability of the optical structure 400 distributed in the display partition A closer to the center of the display panel 000 can be greater than the light convergence capability of the optical structure 400 distributed in the display partition A further away from the center of the display panel 000. In this way, the brightness of the display partition A closer to the center of the display panel 000 is improved to a greater extent, so that the brightness of the display partition A closer to the center of the display panel 000 is approximately the same as the brightness of the display partition A further away from the center of the display panel 000, thereby offsetting the brightness attenuation from the periphery to the center of the display panel 000 caused by the attenuation of the cathode signal, and improving the brightness uniformity of the display panel 000.

[0072] It should be noted that one optical structure 400 can correspond to one light emitting device 300, and one optical structure 400 can converge the light emitted by one optical device 300, so as to achieve the effect of adjusting the brightness of one light emitting device 300 and improve the accuracy of brightness control; one optical structure 400 can also correspond to multiple light emitting devices 300, and one optical structure 400 can converge the light emitted by multiple optical devices 300, so as to achieve the effect of adjusting the brightness of multiple light emitting devices 300 and reduce the manufacturing difficulty. The embodiments of the present application are not limited to this.

[0073] In summary, the embodiment of the present application provides a display panel, and for any two different display partitions, the optical structure distributed in the display partition closer to the center of the display panel can have a greater ability to converge light than the optical structure distributed in the display partition further away from the center of the display panel. In this way, the brightness of the display partition closer to the center of the display panel is improved to a greater extent, so that the brightness of the display partition closer to the center of the display panel is approximately the same as the brightness of the display partition farther away from the center of the display panel, thereby offsetting the brightness attenuation from the periphery to the center of the display panel caused by the attenuation of the cathode signal, thereby solving the problem of uneven light emission of the display panel and improving the brightness uniformity of the display panel.

[0074] For any display subarea A, the brightness of the light emitted by each light emitting device 300 distributed in the display subarea A is relatively close.

[0075] In the embodiment of the present application, the optical structures 400 corresponding to the light emitting devices 300 distributed in the same display subarea A have the same light convergence capability, that is, the optical structures 400 distributed in the same display subarea A have the same light convergence capability. In this way, after the optical structure 400 regulates the light, the brightness of each position of the display subarea A is basically the same.

[0076] For different display partitions A, the brightness of the light emitted by the light emitting devices 300 distributed in different display partitions A is different. Along the four sides of the display panel 000 close to the center of the display panel 000, the brightness of the light emitted by the light emitting devices 300 distributed in multiple display partitions A decreases successively.

[0077] In the embodiment of the present application, the optical structures 400 distributed in different display partitions A have different light convergence capabilities. Preferably, when the number of display partitions A is greater than or equal to three, the light convergence capabilities of the optical structures 400 distributed in multiple display partitions A are increased sequentially along the direction of the periphery of the display panel 000 close to the center of the display panel 000. In this way, after the optical structure 400 regulates the light, the brightness of each display partition A can be improved sequentially along the direction of the periphery of the display panel 000 close to the center of the display panel 000, so that the brightness of each display partition A is relatively close or the brightness is basically the same, so that the phenomenon of uneven light emission of the display panel 000 can be improved, and then the brightness uniformity of the display panel 000 can be improved.

[0078] Please refer to Figures 5 to 11In a possible implementation, the plurality of optical structures 400 may all be plano-convex lenses 500, that is, the plurality of plano-convex lenses 500 may correspond to the plurality of light emitting devices 300, and the plano-convex lenses 500 may protrude outwardly from the side of the corresponding light emitting device 300. In this way, the plano-convex lenses 500 may converge the light emitted by the corresponding light emitting device 300, thereby improving the brightness of the display surface of the display panel 000.

[0079] For any display partition A, the brightness of the light emitted by each light emitting device 300 distributed in the display partition A is relatively close. In the embodiment of the present application, the size and material of each plano-convex lens 500 corresponding to each light emitting device 300 distributed in the same display partition A can be the same, that is, the size and material of each plano-convex lens 500 distributed in the same display partition A can be the same. In this way, it can be ensured that the convergence ability of each plano-convex lens 500 distributed in the same display partition A is the same, so that after the plano-convex lens 500 regulates the light, the brightness of each position of the same display partition A can be basically consistent.

[0080] For different display partitions A, the brightness of the light emitted by the light emitting devices 300 distributed in different display partitions A is different. In the embodiment of the present application, the size and / or material of the plano-convex lenses 500 distributed in different display partitions A are different. In this way, it can be ensured that the plano-convex lenses 500 distributed in different display partitions A have different light convergence capabilities, so that after the plano-convex lenses 500 regulate the light, the brightness of each display partition A can be made closer or basically consistent, thereby improving the problem of uneven light emission of the display panel 000 and improving the brightness uniformity of the display panel 000.

[0081] There are many possible situations in which the size and / or material of the plano-convex lenses 500 distributed in different display subareas A are different. The embodiments of the present application will be schematically described using the following three possible situations as examples.

[0082] In the first possible case, please refer to Figures 5 to 7 , the plano-convex lenses 500 distributed in different display subareas A are made of the same material but have different sizes. In this way, the refractive index of the plano-convex lenses 500 distributed in different display subareas A can be ensured to be the same, but the arch height H and / or aperture D of the plano-convex lenses 500 are different, and the plano-convex lenses 500 distributed in different display subareas A have different light converging capabilities.

[0083] It should be noted that, to a certain extent, the larger the arch height H of the plano-convex lens 500, the stronger the deflection effect of the plano-convex lens 500 on the light, and the stronger the light converging ability of the plano-convex lens 500; and the larger the aperture D of the plano-convex lens 500, the more light enters the plano-convex lens 500, and the stronger the light converging ability of the plano-convex lens 500. Therefore, by controlling the arch height H and / or aperture D of the plano-convex lens 500 to be different, the light converging ability of the plano-convex lens 500 can be different.

[0084] Here, there are multiple implementation methods for the first possible situation. The embodiments of the present application use the following three implementation methods as examples for schematic illustration.

[0085] In a first implementation, the apertures D of the plano-convex lenses 500 distributed in different display subareas A are the same, but the arch heights H are different. For any two different display subareas A, the arch height H of the plano-convex lens 500 distributed in the display subarea A closer to the center of the display panel 000 may be greater than the arch height H of the plano-convex lens 500 distributed in the display subarea A further from the center of the display panel 000. For example, Figure 5 As shown, for two adjacent display partitions A, the arch height H1 of the plano-convex lens 500 distributed in the display partition A closer to the center of the display panel 000 is greater than the arch height H2 of the plano-convex lens 500 distributed in the display partition A farther from the center of the display panel 000 .

[0086] Therefore, for any two different display partitions A, the light convergence capability of the plano-convex lens 500 in the display partition A closer to the center of the display panel 000 is greater than the light convergence capability of the plano-convex lens 500 in the display partition A further away from the center of the display panel 000. In this way, the brightness of the display partition A closer to the center of the display panel 000 is improved to a greater extent, so that the brightness of the display partition A closer to the center of the display panel 000 is approximately the same as the brightness of the display partition A further away from the center of the display panel 000, thereby offsetting the brightness attenuation from the periphery to the center of the display panel 000 caused by the attenuation of the cathode signal, and improving the brightness uniformity of the display panel 000.

[0087] For the light emitting devices 300 distributed in a plurality of display subareas A, the brightness of the light emitted by the light emitting devices 300 decreases in sequence along the direction near the center of the display panel 000 around the display panel 000. Therefore, when the number of display subareas A is greater than or equal to three, the arch height H of the plano-convex lenses 500 distributed in different display subareas A can be increased in sequence along the direction near the center of the display panel 000.

[0088] In this way, the light convergence capability of the plano-convex lenses 500 distributed in the plurality of display subareas A can be ensured to increase in sequence along the direction of the periphery of the display panel 000 close to the center of the display panel 000. In this way, after the plano-convex lenses 500 regulate the light, the brightness of each display subarea A can be improved in sequence along the direction of the periphery of the display panel 000 close to the center of the display panel 000, so that the brightness of each display subarea A is relatively close or substantially the same, the brightness attenuation caused by the attenuation of the cathode signal is offset, and the brightness uniformity of the display panel 000 is improved.

[0089] It should be noted that the arch heights H of the plano-convex lenses 500 distributed in the same display subarea A may be the same. Figure 5 As shown, the arch height H2 of the two plano-convex lenses 500 distributed in the display subarea A further away from the center of the display panel 000 is the same. In this way, it can be ensured that the sizes of the plano-convex lenses 500 distributed in the same display subarea A are the same, so that the light convergence capabilities of the plano-convex lenses 500 are the same. After the plano-convex lenses 500 regulate the light, the brightness of each position in the same display subarea A can be made basically consistent.

[0090] In a second implementation, the plano-convex lenses 500 distributed in different display subareas A have the same arch height H, but different apertures D. For any two different display subareas A, the aperture D of the plano-convex lens 500 distributed in the display subarea A closer to the center of the display panel 000 may be greater than the aperture D of the plano-convex lens 500 distributed in the display subarea A further away from the center of the display panel 000. For example, Figure 6 As shown, for two adjacent display partitions A, the aperture D1 of the plano-convex lens 500 distributed in the display partition A closer to the center of the display panel 000 is larger than the aperture D2 of the plano-convex lens 500 distributed in the display partition A further away from the center of the display panel 000.

[0091] Therefore, for any two different display partitions A, the light convergence capability of the plano-convex lens 500 in the display partition A closer to the center of the display panel 000 is greater than the light convergence capability of the plano-convex lens 500 in the display partition A further away from the center of the display panel 000. In this way, the brightness of the display partition A closer to the center of the display panel 000 is improved to a greater extent, so that the brightness of the display partition A closer to the center of the display panel 000 is approximately the same as the brightness of the display partition A further away from the center of the display panel 000, thereby offsetting the brightness attenuation from the periphery to the center of the display panel 000 caused by the attenuation of the cathode signal, and improving the brightness uniformity of the display panel 000.

[0092] When the number of display partitions A is greater than or equal to three, the apertures D of the plano-convex lenses 500 distributed in different display partitions A can be increased in sequence along the direction close to the center of the display panel 000. In this way, it can be ensured that the light convergence ability of the plano-convex lenses 500 distributed in multiple display partitions A is increased in sequence along the direction close to the center of the display panel 000 around the display panel 000. In this way, after the plano-convex lenses 500 regulate the light, the brightness of each display partition A can be improved in sequence along the direction close to the center of the display panel 000 around the display panel 000, so that the brightness of each display partition A is relatively close or basically the same, offsetting the brightness attenuation caused by the attenuation of the cathode signal, and improving the brightness uniformity of the display panel 000.

[0093] It should be noted that if Figure 6 As shown, the apertures D of the plano-convex lenses 500 distributed in the same display subarea A may be the same. Figure 6 As shown, the apertures D2 of the two plano-convex lenses 500 distributed in the display subarea A further away from the center of the display panel 000 are the same. In this way, it can be ensured that the sizes of the plano-convex lenses 500 distributed in the same display subarea A are the same, so that the light convergence capabilities of the plano-convex lenses 500 are the same. After the plano-convex lenses 500 regulate the light, the brightness of each position in the same display subarea A can be made basically consistent.

[0094] In a third implementation, the arch height H and the aperture D of the plano-convex lens 500 distributed in different display subareas A are different. For any two different display subareas A, the arch height H of the plano-convex lens 500 distributed in the display subarea A closer to the center of the display panel 000 may be greater than the arch height H of the plano-convex lens 500 distributed in the display subarea A further away from the center of the display panel 000; and the aperture D of the plano-convex lens 500 distributed in the display subarea A closer to the center of the display panel 000 may be greater than the aperture D of the plano-convex lens 500 distributed in the display subarea A further away from the center of the display panel 000.

[0095] For example, Figure 7 As shown, for two adjacent display partitions A, the arch height H1 of the plano-convex lens 500 distributed in the display partition A closer to the center of the display panel 000 is greater than the arch height H2 of the plano-convex lens 500 distributed in the display partition A further away from the center of the display panel 000; and the aperture D1 of the plano-convex lens 500 distributed in the display partition A closer to the center of the display panel 000 is greater than the aperture D2 of the plano-convex lens 500 distributed in the display partition A further away from the center of the display panel 000.

[0096] Therefore, for any two different display partitions A, the light convergence capability of the plano-convex lens 500 in the display partition A closer to the center of the display panel 000 is greater than the light convergence capability of the plano-convex lens 500 in the display partition A further away from the center of the display panel 000. In this way, the brightness of the display partition A closer to the center of the display panel 000 is improved to a greater extent, so that the brightness of the display partition A closer to the center of the display panel 000 is approximately the same as the brightness of the display partition A further away from the center of the display panel 000, thereby offsetting the brightness attenuation from the periphery to the center of the display panel 000 caused by the attenuation of the cathode signal, and improving the brightness uniformity of the display panel 000.

[0097] When the number of display partitions A is greater than or equal to three, along the direction close to the center of the display panel 000, the arch height H of the plano-convex lenses 500 distributed in different display partitions A can be increased in sequence, and the diameter D of the plano-convex lenses 500 distributed in different display partitions A can also be increased in sequence. In this way, it can be ensured that the light convergence ability of the plano-convex lenses 500 distributed in multiple display partitions A is increased in sequence along the direction close to the center of the display panel 000 around the display panel 000. In this way, after the plano-convex lenses 500 regulate the light, along the direction close to the center of the display panel 000 around the display panel 000, the brightness of each display partition A can be improved in sequence, so that the brightness of each display partition A is relatively close or basically the same, offsetting the brightness attenuation caused by the attenuation of the cathode signal, and improving the brightness uniformity of the display panel 000.

[0098] In the second possible case, please refer to Figure 8 , the plano-convex lenses 500 distributed in different display partitions A have the same size, but different materials. In this way, it can be ensured that the arch height H and the aperture D of the plano-convex lenses 500 distributed in different display partitions A are the same, but the refractive index of the plano-convex lenses 500 is different, and the plano-convex lenses 500 distributed in different display partitions A have different light convergence capabilities. It should be noted that the material of the plano-convex lens 500 will affect the refractive index of the plano-convex lens 500. To a certain extent, the greater the refractive index of the plano-convex lens 500, the stronger the deflection effect of the plano-convex lens 500 on the light, and the stronger the light convergence capability of the plano-convex lens 500. Therefore, by controlling the different materials of the plano-convex lens 500, different light convergence capabilities of the plano-convex lens 500 can be achieved.

[0099] For any two different display subareas A, the refractive index of the plano-convex lens 500 in the display subarea A closer to the center of the display panel 000 may be greater than the refractive index of the plano-convex lens 500 in the display subarea A farther from the center of the display panel 000. For example, please refer to Figure 8The materials of the plano-convex lenses 500 distributed in two adjacent display partitions A are different, so that the refractive indexes of the plano-convex lenses 500 located in different display partitions A are different, and the refractive index of the plano-convex lens 500 distributed in the display partition A closer to the center of the display panel 000 is greater than the refractive index of the plano-convex lens 500 distributed in the display partition A further away from the center of the display panel 000.

[0100] Therefore, for any two different display partitions A, the light convergence capability of the plano-convex lens 500 in the display partition A closer to the center of the display panel 000 is greater than the light convergence capability of the plano-convex lens 500 in the display partition A further away from the center of the display panel 000. In this way, the brightness of the display partition A closer to the center of the display panel 000 is improved to a greater extent, so that the brightness of the display partition A closer to the center of the display panel 000 is approximately the same as the brightness of the display partition A further away from the center of the display panel 000, thereby offsetting the brightness attenuation from the periphery to the center of the display panel 000 caused by the attenuation of the cathode signal, and improving the brightness uniformity of the display panel 000.

[0101] When the number of display partitions A is greater than or equal to three, the refractive index of the plano-convex lenses 500 distributed in different display partitions A can be increased in sequence along the direction close to the center of the display panel 000. In this way, it can be ensured that the light convergence ability of the plano-convex lenses 500 distributed in multiple display partitions A is increased in sequence along the direction close to the center of the display panel 000 around the display panel 000. In this way, after the plano-convex lenses 500 regulate the light, the brightness of each display partition A can be improved in sequence along the direction close to the center of the display panel 000 around the display panel 000, so that the brightness of each display partition A is relatively close or basically consistent, offsetting the brightness attenuation caused by the attenuation of the cathode signal, and improving the brightness uniformity of the display panel 000.

[0102] It should also be noted that the materials of the plano-convex lenses 500 distributed in the same display subarea A can be the same. In this way, it can be ensured that the refractive index of the plano-convex lenses 500 distributed in the same display subarea A is the same, thereby ensuring that the light convergence capabilities of the plano-convex lenses 500 are the same. After the plano-convex lenses 500 regulate the light, the brightness of each position in the same display subarea A can be made basically consistent.

[0103] Please refer to Figure 12 to Figure 14 The multiple display partitions A may include: a central display partition A1, and multiple edge display partitions surrounding the central display partition A1, and the multiple edge display partitions may include: an edge display partition A3 distributed on the outermost side, and other edge display partitions A2.

[0104] Preferably, the refractive index of each plano-convex lens 500 distributed in the central display partition A1 is the same, and the refractive index range may be 1.6 to 1.65; the refractive index of each plano-convex lens 500 distributed in the outermost edge display partition A3 is the same, and the refractive index range may be 1.4 to 1.5; and the refractive index of the plano-convex lenses 500 distributed in other edge display partitions A2 may range from 1.5 to 1.6, and the refractive index of the plano-convex lenses 500 distributed in other edge display partitions A2 increases successively in the direction approaching the central display partition A1.

[0105] The plano-convex lens 500 can be made of organic materials or inorganic materials. When the composition or mass ratio of the materials is different, the refractive index of the obtained plano-convex lens 500 is different. There are many ways to achieve different refractive indices of the plano-convex lens 500 by controlling the different materials of the plano-convex lens 500. The embodiments of the present application are schematically described by taking the following three implementations as examples.

[0106] In a first implementation manner, the plano-convex lenses 500 distributed in different display subareas A may all be made of organic materials, and the organic materials used in the plano-convex lenses 500 distributed in different display subareas A may have different components and / or component mass ratios.

[0107] Exemplarily, the material components of the plano-convex lens 500 distributed in the central display partition A1 may include: propylene glycol methyl ether acetate, phenolic resin, polyhydroxystyrene derivatives, photoacid generators and additives, and the weight proportion of each component is: propylene glycol methyl ether acetate accounts for about 76%, phenolic resin accounts for about 23%, photoacid generators account for less than 1%, and additives account for less than 1%; the material components of the plano-convex lens 500 distributed in the outermost edge display partition A3 may include: propylene glycol methyl ether acetate, acrylic resin, photosensitizer, dioxane and The weight proportion of each component is as follows: propylene glycol methyl ether acetate accounts for about 50% to 80%, acrylic resin accounts for about 5% to 45%, photosensitive agent accounts for about 1% to 15%, dioxane accounts for about 1%, and the rest are additives; and there is no limitation on the organic material used for the plano-convex lens 500 distributed in the other edge display partition A2. It is only necessary to change the composition and / or weight proportion of the organic material so that the refractive index of the plano-convex lens 500 distributed in the other edge display partition A2 increases successively along the direction approaching the center of the display panel 000.

[0108] In a second implementation, the plano-convex lenses 500 distributed in different display subareas A may all be made of inorganic materials, and the inorganic materials used in the plano-convex lenses 500 distributed in different display subareas A may have different components and / or component mass ratios.

[0109] Exemplarily, the material of the plano-convex lenses 500 distributed in the central display partition A1 can be silicon nitride, silicon oxide, or other inorganic materials containing silicon, oxygen, nitrogen and other elements; and there is no limitation on the inorganic material used for the plano-convex lenses 500 distributed in multiple edge display partitions. It is only necessary to change the composition and / or mass ratio of the inorganic material so that the refractive index of the plano-convex lenses 500 distributed in multiple edge display partitions increases successively along the direction approaching the center of the display panel 000.

[0110] In a third implementation, the plano-convex lenses 500 distributed in a part of the display partition A can be made of inorganic materials, and the plano-convex lenses 500 distributed in another part of the display partition A can be made of organic materials, and the components and / or component mass proportions of the inorganic materials or organic materials used in the plano-convex lenses 500 distributed in different display partitions A are different.

[0111] Exemplarily, the material of the plano-convex lens 500 distributed in the central display partition A1 may be silicon nitride, silicon oxide, or other inorganic materials containing silicon, oxygen, nitrogen and other elements; and the material composition of the plano-convex lens 500 distributed in the outermost edge display partition A3 may include: propylene glycol methyl ether acetate, acrylic resin, photosensitive agent, dioxane and additives, and the weight proportion of each component is: propylene glycol methyl ether acetate accounts for about 50% to 80%, acrylic resin accounts for about 5% to 45%, photosensitive agent accounts for about 1% to 15%, and dioxane accounts for about 1%. %, and the rest are additives; and for other edge display partitions A2, the plano-convex lenses 500 distributed in other edge display partitions A2 closer to the center of the display panel 000 can be made of inorganic materials, and the plano-convex lenses 500 distributed in other edge display partitions A2 farther from the center of the display panel 000 can be made of organic materials, and it is only necessary to change the composition and / or composition mass ratio of the inorganic material or the organic material so that the refractive index of the plano-convex lenses 500 distributed in other edge display partitions A2 increases in sequence along the direction close to the center of the display panel 000. There is no limit on the number of other edge display partitions A2 that use inorganic materials to make the plano-convex lenses 500.

[0112] To this end, the above three implementations can make the refractive index of the plano-convex lenses 500 distributed in different display partitions A increase in sequence along the direction close to the center of the display panel 000, so that the light convergence ability of the plano-convex lenses 500 distributed in multiple display partitions A can be ensured to increase in sequence along the direction close to the center of the display panel 000. In this way, after being regulated by the plano-convex lenses 500, the brightness of each display partition A is improved in sequence along the direction close to the center of the display panel 000, and the brightness of each display partition A is approximately the same, so that the brightness attenuation caused by the attenuation of the cathode signal can be offset, and the brightness uniformity of the display panel 000 can be improved.

[0113] It should also be noted that the processes used to make the plano-convex lens 500 using organic materials and inorganic materials are different. The organic material uses a thermal curing molding process, while the inorganic material uses a dry etching molding process. There are differences in the morphology of the plano-convex lens 500 made using the two processes. Among them, the surface of the plano-convex lens 500 made using the dry etching molding process may be relatively rough, and the curvature of the plano-convex lens 500 is larger. The surface of the plane lens 500 made using the thermal curing molding process is smoother, and the curvature of the plano-convex lens 500 is relatively small. In this way, compared with the plane lens 500 made using the thermal curing molding process, the plano-convex lens 500 made using the dry etching molding process has a stronger deflection effect on light, and the plano-convex lens 500 also has a stronger ability to converge light. Therefore, using inorganic materials to make the plano-convex lenses 500 distributed in the central display partition A1 can make the plano-convex lenses 500 distributed in the central display partition A1 have a stronger ability to converge light, thereby improving the brightness of the central display partition A1, and then improving the brightness uniformity of the display panel 000.

[0114] In the third possible case, please refer to Figures 9 to 11 , the plano-convex lenses 500 distributed in different display subareas A have different sizes and are made of different materials. In this way, the refractive index of the plano-convex lenses 500 distributed in different display subareas A can be different, and the arch height H and / or aperture D of the plano-convex lenses 500 are different, so the plano-convex lenses 500 distributed in different display subareas A have different light convergence capabilities. Here, there are multiple implementations for the third possible situation, and the embodiments of the present application are schematically described using the following three implementations as examples.

[0115] In the first implementation, the plano-convex lenses 500 distributed in different display subareas A are made of different materials and have different arch heights H, but have the same aperture D. Fig. 9For any two different display partitions A, the refractive index of the plano-convex lens 500 distributed in the display partition A closer to the center of the display panel 000 may be greater than the refractive index of the plano-convex lens 500 distributed in the display partition A further away from the center of the display panel 000; and for any two different display partitions A, the arch height H1 of the plano-convex lens 500 distributed in the display partition A closer to the center of the display panel 000 may be greater than the arch height H2 of the plano-convex lens 500 distributed in the display partition A further away from the center of the display panel 000.

[0116] In the second implementation, the plano-convex lenses 500 distributed in different display subareas A are made of different materials and have different apertures D, but have the same arch height H. Fig.10 For any two different display partitions A, the refractive index of the plano-convex lens 500 distributed in the display partition A closer to the center of the display panel 000 may be greater than the refractive index of the plano-convex lens 500 distributed in the display partition A further away from the center of the display panel 000; and for any two different display partitions A, the aperture D1 of the plano-convex lens 500 distributed in the display partition A closer to the center of the display panel 000 may be greater than the aperture D2 of the plano-convex lens 500 distributed in the display partition A further away from the center of the display panel 000.

[0117] In the third implementation, the plano-convex lenses 500 distributed in different display subareas A are made of different materials, and their arch heights H and apertures D are also different. Fig.11 For any two different display partitions A, the refractive index of the plano-convex lens 500 distributed in the display partition A closer to the center of the display panel 000 may be greater than the refractive index of the plano-convex lens 500 distributed in the display partition A further away from the center of the display panel 000; and for any two different display partitions A, the arch height H1 of the plano-convex lens 500 distributed in the display partition A closer to the center of the display panel 000 may be greater than the arch height H2 of the plano-convex lens 500 distributed in the display partition A further away from the center of the display panel 000, and the aperture D1 of the plano-convex lens 500 distributed in the display partition A closer to the center of the display panel 000 may be greater than the aperture D2 of the plano-convex lens 500 distributed in the display partition A further away from the center of the display panel 000.

[0118] For any two different display partitions A, the above three implementations can achieve that the light convergence capability of the plano-convex lens 500 distributed in the display partition A closer to the center of the display panel 000 is greater than the light convergence capability of the plano-convex lens 500 distributed in the display partition A further away from the center of the display panel 000. In this way, the brightness of the display partition A closer to the center of the display panel 000 is improved to a greater extent, so that the brightness of the display partition A closer to the center of the display panel 000 is approximately the same as the brightness of the display partition A further away from the center of the display panel 000, thereby offsetting the brightness attenuation caused by the attenuation of the cathode signal, improving the phenomenon of uneven light emission of the display panel 000, and improving the brightness uniformity of the display panel 000.

[0119] It should be noted that the light converging ability of the plano-convex lens 500 can be characterized by brightness gain. Brightness gain refers to the ratio of the brightness of each position on the display surface after being regulated by the plano-convex lens 500 to the brightness of the corresponding position on the display surface when the plano-convex lens 500 is not used. The brightness gain is greater than 1, that is, after being regulated by the plano-convex lens 500, the brightness of each position on the display surface increases.

[0120] Exemplarily, the brightness gain of each plano-convex lens 500 distributed in the central display partition A1 can be between 1.8 and 2.5; the brightness gain of each plano-convex lens 500 distributed in the outermost edge display partition A3 can be between 1.3 and 1.6; and the brightness gain of the plano-convex lenses 500 distributed in other edge display partitions A2 can be between 1.6 and 1.8, and the brightness gain of the plano-convex lenses 500 distributed in other edge display partitions A2 increases successively in the direction approaching the central display partition A1.

[0121] In this way, the brightness of the multiple display partitions A can be improved, and the brightness of the central display partition A is improved to a greater extent than that of the other edge display partitions A2, and the brightness of the other edge display partitions A2 is improved to a greater extent than that of the outermost edge display partition A3. In this way, the brightness of the multiple display partitions A can be made close or basically consistent, thereby solving the problem of uneven light emission of the display panel 000 and improving the brightness uniformity of the display panel 000.

[0122] Please refer to Figure 12 to Figure 14 The plan view of the display area 10 may be a rectangle. For example, the plan view of the display area 10 may be a square or a rectangle. Of course, the plan view of the display area 10 may also be other shapes.

[0123] There may be a boundary line between any two adjacent display subareas A. When the plan view of the display area 10 is a square, the area surrounded by the boundary line may be a circle; when the plan view of the display area 10 is a rectangle, the shape of the area surrounded by the boundary line may be an ellipse, and the major axis of the ellipse may be parallel to the direction of the long side of the plan view of the display area 10.

[0124] When the number of display partitions A is greater than or equal to three, there may be multiple boundary lines between the multiple display partitions A, and none of the multiple boundary lines is tangent to the outer boundary of the display area 10. The area surrounded by the multiple boundary lines may be multiple circles or multiple ellipses, wherein the multiple circles may be concentric circles, and the multiple ellipses may also be multiple concentric ellipses.

[0125] In actual display products, the number of display partitions may be multiple, and the range of each display partition A may also be different. For a display panel 000 having a size greater than 1, the plan view of the display area 10 of the display panel 000 may be a square, and the area enclosed by the boundary line between any two adjacent display partitions A is a circle. The embodiments of the present application take the following two implementations as examples to schematically illustrate the range of each display partition A.

[0126] For the first implementation, please refer to Fig.12 The display panel 000 includes five display partitions A, and the ranges of the five display partitions A distributed from the center of the display panel 000 to the periphery of the display panel 000 are as follows: a circle with a radius of 2 mm with the center of the display panel 000 as the center; a ring with an inner diameter of 2 mm and an outer diameter of 4 mm with the center of the display panel 000 as the center; a ring with an inner diameter of 4 mm and an outer diameter of 6 mm with the center of the display panel 000 as the center; a ring with an inner diameter of 6 mm and an outer diameter of 8 mm with the center of the display panel 000 as the center; and a circle with a radius of 8 mm with the center of the display panel 000 as the center and the area enclosed by the outer boundary of the display area.

[0127] For the second implementation, please refer to Fig.13 The display panel 000 includes four display partitions A. The ranges of the four display partitions A distributed from the center of the display panel 000 to the periphery of the display panel 000 are as follows: a circle with a radius of 2 mm with the center of the display panel 000 as the center; a ring with an inner diameter of 2 mm and an outer diameter of 5 mm with the center of the display panel 000 as the center; a ring with an inner diameter of 5 mm and an outer diameter of 8 mm with the center of the display panel 000 as the center; and an area enclosed by a circle with a radius of 8 mm with the center of the display panel 000 as the center and the outer boundary of the display area.

[0128] Please refer to Fig.15The display panel 000 may include a first electrode layer 301 , an organic light emitting layer 302 , a second electrode layer 303 and a pixel definition layer 304 .

[0129] The first electrode layer 301 can be located on one side of the driving backplane 100. The first electrode layer 301 can have multiple separately arranged first electrodes. The multiple first electrodes can be electrically connected to the driving backplane 100, so that the driving backplane 100 can load voltage to the multiple first electrodes, and then drive the display panel 000 to display images.

[0130] The pixel definition layer 304 may be located on a side of the first electrode layer 301 away from the driving backplane 100, and the pixel definition layer 304 may have a plurality of pixel openings, and the pixel openings penetrate the pixel definition layer 304 in a direction perpendicular to and away from the driving backplane 100. The plurality of pixel openings may correspond one-to-one to the plurality of first electrodes in the first electrode layer 301, and the orthographic projections of the pixel openings on the driving backplane 100 may be located within the orthographic projections of the corresponding first electrodes on the driving backplane 100.

[0131] The organic light-emitting layer 302 may include a plurality of stacked sub-light-emitting layers, and adjacent sub-light-emitting layers may be connected in series via a charge generation layer. The organic light-emitting layer 302 may be manufactured using a whole-layer evaporation process, that is, the sub-light-emitting layers are connected as a whole layer, and the charge generation layer is also connected as a whole layer. The organic light-emitting layer 302 may be located on a side of the pixel definition layer 304 that is away from the driving backplane 100, and a portion of the organic light-emitting layer 302 may be located in a plurality of pixel openings of the pixel definition layer 304, and the organic light-emitting layer 302 located in the pixel opening may be in contact with the first electrode.

[0132] The second electrode layer 303 can be located on the side of the organic light-emitting layer 302 away from the driving backplane 100, that is, the organic light-emitting layer 302 can also contact the second electrode layer 303, and the organic light-emitting layer 302 located in the pixel opening can contact the first electrode and the second electrode layer 303 at the same time. The organic light-emitting layer 302 located in a pixel opening and the first electrode and the second electrode layer 303 in contact therewith can serve as a light-emitting device 300. The first electrode can be an anode, and the second electrode layer 303 can be a cathode. When the first electrode and the second electrode layer 303 are loaded with a corresponding voltage, an electric field is formed between the first electrode and the second electrode layer 303, and the organic light-emitting layer 302 located in the electric field can emit light, so that the display panel 000 displays the corresponding picture.

[0133] It should be noted that the pixel definition layer 304 may also have a partition structure K, and the partition structure K may be located between two adjacent pixel openings. Since the organic light-emitting layer 302 is usually made using a whole-layer evaporation process, that is, the sub-light-emitting layers are connected as a whole layer, and the charge generation layer is also connected as a whole layer. Since the charge generation layer has good conductivity, during the light-emitting process of a certain light-emitting device 300, the charge generation layer in this light-emitting device 300 may generate a lateral leakage current, causing the adjacent light-emitting device 300 to emit light. Therefore, the use of the partition structure K can isolate at least part of the organic material layer in the organic light-emitting layer 302, such as the charge generation layer, so as to have a better isolation effect on the lateral leakage current.

[0134] Please refer to Fig.16 The display panel 000 may further include a non-display area 20 , and the non-display area 20 is located outside the display area 10 .

[0135] The driving backplane 100 may have a plurality of pads, the plurality of pads may be located in the non-display area 20 , and the plurality of pads may be electrically connected to the driving chip, so that the driving chip may drive the display panel 000 to display corresponding images.

[0136] The driving backplane 100 may further include an auxiliary electrode ring 600, which is located in the non-display area 20 and may be disposed around the display area 10. The auxiliary electrode ring 600 may include a plurality of transfer holes 601, which may be electrically connected to a plurality of auxiliary electrode lines, so that the plurality of auxiliary electrode lines may transmit cathode signals to the auxiliary electrode ring 600. A portion of the second electrode layer 303 is located in the non-display area 20, and a portion of the second electrode layer 303 located in the non-display area 20 may be electrically connected to the auxiliary electrode ring 600, so that the second electrode layer 303 may be connected to the cathode signal through the auxiliary electrode ring 600.

[0137] The second electrode layer 303 is a film layer structure arranged in an entire layer, and the cathode signals required by each light-emitting device 300 are provided by the auxiliary electrode ring 600. Since the resistance value of the second electrode layer 303 arranged in an entire layer is relatively high and the transmission path of the cathode signal is relatively long, the attenuation of the cathode signal at a position farther from the auxiliary electrode ring 600 is more obvious, which will cause the brightness to decay in sequence from the periphery of the display panel 000 to the center of the display panel 000, which is likely to cause uneven light emission.

[0138] And, if Fig.15As shown, at the partition structure K, the second electrode layer 303 will have unevenness and punctures, which will increase the transmission path of the cathode signal and cause leakage. These will increase the transmission loss of the cathode signal in the second electrode layer 303. The cathode signal attenuates more significantly at a location farther from the auxiliary electrode ring 600, resulting in more severe brightness attenuation from the periphery of the display panel 000 to the center of the display panel 000, which in turn leads to poor brightness uniformity of the display panel 000.

[0139] However, in the above embodiment, for any two different display partitions A, the light convergence capability of the optical structure 400 distributed in the display partition A closer to the center of the display panel 000 may be greater than the light convergence capability of the optical structure 400 distributed in the display partition A further away from the center of the display panel 000. In this way, the brightness of the display partition A closer to the center of the display panel 000 is improved to a greater extent, so that the brightness of the display partition A closer to the center of the display panel 000 is approximately the same as the brightness of the display partition A further away from the center of the display panel 000, thereby offsetting the brightness attenuation caused by the attenuation of the cathode signal, solving the problem of uneven light emission of the display panel 000, and improving the brightness uniformity of the display panel 000.

[0140] Please refer to Fig.17 The display panel 000 may further include: a filter layer 700 , a bonding layer 800 and a protective cover plate 900 .

[0141] The filter layer 700 may be located on a side of the encapsulation layer 200 away from the driving backplane 100 , and is used to select light emitted from the light emitting device 300 , thereby obtaining emitted light of different colors.

[0142] The encapsulation layer 200 may include: a first inorganic encapsulation layer 201, an organic encapsulation layer 202, and a second inorganic encapsulation layer 203 stacked in a direction away from the driving backplane 100. The filter layer 700 may be located on the side of the second inorganic encapsulation layer 203 away from the driving backplane 100. The first inorganic encapsulation layer 201 and the second inorganic encapsulation layer 203 may prevent the organic light-emitting layer 302 from failing due to water and oxygen in the external environment, and the organic encapsulation layer 202 may flatten the film layer to a certain extent, and also has a certain buffering effect on the stress generated during the bending or folding of the display panel 000.

[0143] The multiple optical structures 400 may be located on a side of the filter layer 700 away from the driving back plate 100 , and the multiple optical structures 400 may converge light of different colors emitted after being selected by the filter layer 700 .

[0144] The adhesive layer 800 can be located on the side of the multiple optical structures 400 away from the driving back plate 100, and the protective cover plate 900 can be located on the side of the adhesive layer 800 away from the driving back plate 100. In this way, the adhesive layer 800 can adhere the protective cover plate 900 to the multiple optical structures 400, so that the protective cover plate 900 can encapsulate and protect the multiple optical structures 400.

[0145] It should be noted that the refractive index of the optical structure 400 can be greater than the refractive index of the bonding layer 800. Then, the light emitted from the filter layer 700 can be deflected toward the position of the arch height of each optical structure 400 after passing through the optical structure 400, so that the optical structure 400 can converge the light and enhance the brightness of the display surface.

[0146] It should also be noted that the display panel 000 may further include a first protective layer 1000 and a second protective layer 2000. The first protective layer 1000 may be located between the encapsulation layer 200 and the filter layer 700, and the second protective layer 2000 may be located between the filter layer 700 and the optical structure 400. Both the first protective layer 1000 and the second protective layer 2000 may encapsulate and protect the display panel 000, and may also flatten the film layer to a certain extent.

[0147] In summary, the embodiment of the present application provides a display panel, and for any two different display partitions, the optical structure distributed in the display partition closer to the center of the display panel can have a greater ability to converge light than the optical structure distributed in the display partition further away from the center of the display panel. In this way, the brightness of the display partition closer to the center of the display panel is improved to a greater extent, so that the brightness of the display partition closer to the center of the display panel is approximately the same as the brightness of the display partition farther away from the center of the display panel, thereby offsetting the brightness attenuation from the periphery to the center of the display panel caused by the attenuation of the cathode signal, thereby solving the problem of uneven light emission of the display panel and improving the brightness uniformity of the display panel.

[0148] An embodiment of the present application also provides a display device, which can be: an augmented reality technology (AR) device, a virtual reality technology (VR) device, a mobile phone, a tablet computer, a television, a monitor, a laptop computer, a digital photo frame, a navigator, or any other product or component with a display function.

[0149] The display device may include: a driving chip and a display panel. The display panel may be a silicon-based OLED display panel. The display panel may be the display panel 000 in the above embodiment, and the driving chip may be electrically connected to the display panel 000, so as to drive the display panel 000 to display a picture.

[0150] It should be noted that in the accompanying drawings, the sizes of layers and regions may be exaggerated for clarity of illustration. It is also understood that when an element or layer is referred to as being "on" another element or layer, it may be directly on the other element, or there may be an intermediate layer. In addition, it is understood that when an element or layer is referred to as being "under" another element or layer, it may be directly under the other element, or there may be more than one intermediate layer or element. In addition, it is also understood that when a layer or element is referred to as being "between" two layers or two elements, it may be the only layer between the two layers or two elements, or there may also be more than one intermediate layer or element. Similar reference numerals throughout the text indicate similar elements.

[0151] In the present application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. The term "plurality" refers to two or more than two, unless otherwise clearly defined.

[0152] The above description is only an optional embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A display panel, characterized in that: The display panel has a display area, the display area includes a plurality of display partitions, and the plurality of display partitions are sequentially arranged from the center to the periphery of the display panel; the display panel includes: a driving backplane, a packaging layer, a plurality of light-emitting devices and a plurality of optical structures; The plurality of light emitting devices are located on the same side of the driving backplane and are distributed in the display area, and the plurality of light emitting devices are electrically connected to the driving backplane; The encapsulation layer is located on a side of the plurality of light-emitting devices away from the driving backplane; The multiple optical structures are located on a side of the encapsulation layer away from the driving backplane, the multiple optical structures correspond to the multiple light-emitting devices, and the orthographic projections of the light-emitting devices on the driving backplane overlap with the orthographic projections of the corresponding light-emitting devices on the driving backplane, and the optical structures are used to converge the light emitted by the corresponding light-emitting devices; Among them, for any two different display partitions, the optical structure distributed in the display partition closer to the center of the display panel has a greater ability to converge light than the optical structure distributed in the display partition further away from the center of the display panel.

2. The display panel according to claim 1, characterized in that: The optical structures distributed in the same display partition have the same light-gathering capabilities; and the light-gathering capabilities of the optical structures distributed in the multiple display partitions increase sequentially along the four sides of the display panel toward the center of the display panel.

3. The display panel according to claim 2, characterized in that: The multiple optical structures are all plano-convex lenses, and the plano-convex lenses protrude outwards from a side of the corresponding light-emitting device; The sizes and materials of the plano-convex lenses distributed in the same display subarea are the same, and the sizes and / or materials of the plano-convex lenses distributed in different display subareas are different.

4. The display panel according to claim 3, characterized in that: When the plano-convex lenses distributed in different display partitions are made of the same material but have different sizes, for any two different display partitions, the arch height of the plano-convex lens distributed in the display partition closer to the center of the display panel is greater than the arch height of the plano-convex lens distributed in the display partition further away from the center of the display panel.

5. The display panel according to claim 4, characterized in that: The apertures of the plano-convex lenses distributed in different display subareas are all the same.

6. The display panel according to claim 3, characterized in that: When the materials of the plano-convex lenses distributed in different display partitions are the same but the sizes are different, for any two different display partitions, the aperture of the plano-convex lens distributed in the display partition closer to the center of the display panel is larger than the aperture of the plano-convex lens distributed in the display partition further away from the center of the display panel.

7. The display panel according to claim 6, characterized in that: The arch heights of the plano-convex lenses distributed in different display subareas are all the same.

8. The display panel according to claim 3, characterized in that: In the case that the plano-convex lenses distributed in different display partitions are made of the same material but have different sizes, for any two different display partitions, the arch height of the plano-convex lenses distributed in the display partition closer to the center of the display panel is greater than the arch height of the plano-convex lenses distributed in the display partition further away from the center of the display panel; and the aperture of the plano-convex lenses distributed in the display partition closer to the center of the display panel is greater than the aperture of the plano-convex lenses distributed in the display partition further away from the center of the display panel.

9. The display panel according to claim 3, characterized in that: When the plano-convex lenses distributed in different display partitions have the same size but different materials, for any two different display partitions, the refractive index of the plano-convex lens distributed in the display partition closer to the center of the display panel is greater than the refractive index of the plano-convex lens distributed in the display partition further away from the center of the display panel.

10. The display panel according to claim 3, characterized in that: In the case that the plano-convex lenses distributed in different display partitions are of different sizes and made of different materials, for any two different display partitions, the refractive index of the plano-convex lens distributed in the display partition closer to the center of the display panel is greater than the refractive index of the plano-convex lens distributed in the display partition further away from the center of the display panel; and for any two different display partitions, the arch height of the plano-convex lens distributed in the display partition closer to the center of the display panel is greater than the arch height of the plano-convex lens distributed in the display partition further away from the center of the display panel, and / or the aperture of the plano-convex lens distributed in the display partition closer to the center of the display panel is greater than the aperture of the plano-convex lens distributed in the display partition further away from the center of the display panel.

11. The display panel according to any one of claims 1 to 10, characterized in that: There is a boundary line between any two adjacent display subareas, and the shape of the area surrounded by the boundary line is circular or elliptical.

12. The display panel according to any one of claims 1 to 10, characterized in that: The display panel comprises a first electrode layer, a pixel definition layer, an organic light emitting layer and a second electrode layer; The first electrode layer is located at one side of the driving backplane, and the first electrode layer has a plurality of first electrodes that are separately arranged, and the plurality of first electrodes are electrically connected to the driving backplane; The pixel definition layer is located on a side of the first electrode layer away from the driving backplane; The organic light emitting layer is located on a side of the pixel definition layer away from the driving backplane; The second electrode layer is located on a side of the organic light emitting layer away from the driving backplane; The pixel definition layer has a plurality of pixel openings and a partition structure distributed between two adjacent pixel openings, and the partition structure is used to partition at least part of the organic material layer in the organic light-emitting layer.

13. The display panel according to claim 12, characterized in that: The display panel also has: a non-display area located outside the display area; the driving backplane has: an auxiliary electrode ring located in the non-display area, the auxiliary electrode ring is arranged around the display area, and the part of the second electrode layer located in the non-display area is electrically connected to the auxiliary electrode ring.

14. The display panel according to claim 13, characterized in that: The display panel also includes: a filter layer, a bonding layer and a protective cover plate; The filter layer is located on a side of the encapsulation layer away from the driving backplane; The plurality of optical structures are located on a side of the filter layer away from the driving back plate; The adhesive layer is located on a side of the plurality of optical structures away from the driving back plate; The protective cover plate is located on a side of the adhesive layer away from the driving back plate; Wherein, the refractive index of the optical structure is greater than the refractive index of the bonding layer.

15. A display device, characterized in that: It comprises a driving chip and the display panel according to any one of claims 1 to 14, wherein the driving chip is electrically connected to the display panel.

Images