Display panel and display device

Abstract

The invention discloses a display panel and a display device. The display panel comprises a substrate, and the substrate comprises a splicing display area between a first display area and a second display area; the pixel limiting layer is located on the substrate and is provided with a pixel opening, and a sub-pixel area is defined by the pixel opening; each sub-pixel region comprises a light-emitting unit, and each light-emitting unit comprises a functional film layer; the pixel openings in the splicing display area comprise a first type of pixel openings and a second type of pixel openings, and a first splicing line is arranged between the first type of pixel openings and the second type of pixel openings; the functional film layer comprises a target functional film layer, the target functional film layer in the splicing display area comprises a first type of target functional film layer and a second type of target functional film layer, and a second splicing line is arranged between the first type of target functional film layer and the second type of target functional film layer; the orthographic projection of the first splicing line on the substrate body and the orthographic projection of the second splicing line on the substrate body at least partially do not coincide.

Description

Technical Field

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

[0002] With the continuous development of display technology, silicon-based OLED (Organic Light Emitting Diode) display panels have attracted widespread attention due to their advantages such as high resolution, low power consumption, small size, and light weight. They have excellent application prospects in high-resolution near-eye display industries such as wearable devices, industrial security, and medical applications. When the screen size of a silicon-based OLED display panel exceeds 1.43 inches, the exposure range of the exposure machine is limited during the manufacturing process, making it impossible to complete an exposure process in a single exposure. Therefore, two or more exposures are required to complete one exposure process.

[0003] In related technologies, the exposure process involves multiple exposures using a stitched exposure method to complete one exposure step. However, in this stitched exposure method, adjacent exposure areas overlap. Because the overlapping areas are exposed twice, poor stitching occurs, resulting in poor display performance of the silicon-based OLED display panel. Summary of the Invention

[0004] This invention provides a display panel and a display device to solve the problem of poor display effect caused by poor splicing due to splicing exposure of the display panel.

[0005] To address the aforementioned technical problems, the present invention provides a display panel, comprising: a substrate, the substrate including a plurality of display areas, the plurality of display areas including adjacent first display areas and second display areas, and a splicing display area located between the first display areas and the second display areas; a pixel defining layer, located on the substrate, the pixel defining layer having a plurality of spaced pixel openings, the pixel openings defining a plurality of sub-pixel regions in the display areas on the substrate; the sub-pixel regions including: light-emitting units, the light-emitting units including a plurality of functional film layers, the plurality of functional film layers being used to emit display light; wherein, the pixel openings in the splicing display area include first type pixel openings and second type pixel openings, a first splicing line is formed between the first type pixel openings and the second type pixel openings, the first splicing line being formed by the pixel defining layer; and wherein, the plurality of functional film layers include target functional film layers, the target functional film layers in the splicing display area include first type target functional film layers and second type target functional film layers, a second splicing line is formed between the first type target functional film layers and the second type target functional film layers, the orthographic projection of the first splicing line on the substrate and the orthographic projection of the second splicing line on the substrate at least partially do not overlap.

[0006] Optionally, the first type of pixel aperture and the pixel aperture of the first display area are formed in one process, the second type of pixel aperture and the pixel aperture of the second display area are formed in one process, and the pixel aperture of the first display area and the pixel aperture of the second display area are formed in different processes; the first type of target functional film layer and the target functional film layer of the first display area are formed in one process, the second type of target functional film layer and the target functional film layer of the second display area are formed in one process, and the target functional film layer of the first display area and the target functional film layer of the second display area are formed in different processes.

[0007] Optionally, the target functional layer includes a color filter layer, which includes a first type of color filter layer and a second type of color filter layer located within the splicing display area. The second splicing line includes a first sub-splicing line formed by the gap between the first type of color filter layer and the second type of color filter layer. And / or, the target functional layer includes an optical lens layer, which includes a first type of optical lens layer and a second type of optical lens layer located within the splicing display area. The second splicing line includes a second sub-splicing line formed by the gap between the first type of optical lens layer and the second type of optical lens layer. The orthographic projection of the first sub-splicing line formed by the color filter layer on the substrate and the orthographic projection of the second sub-splicing line formed by the optical lens layer on the substrate completely coincide or at least partially do not coincide.

[0008] Optionally, when the target functional layer includes a color filter layer and an optical lens layer, at least two or three of the orthographic projections of the first splicing line on the substrate, the orthographic projections of the first sub-slicing line on the substrate, and the orthographic projections of the second sub-slicing line on the substrate do not overlap.

[0009] Optionally, the spacing between two adjacent sub-pixel regions in the first display area is the same as the spacing between two adjacent sub-pixel regions in the second display area, and the spacing between two adjacent sub-pixel regions in the spliced ​​display area is different from the spacing between two adjacent sub-pixel regions in the first display area.

[0010] Optionally, the spacing between any two adjacent sub-pixel regions within the spliced ​​display area may be the same or not exactly the same.

[0011] Optionally, the areas of sub-pixel regions of the same color in the first display area and the second display area are the same, and the areas of sub-pixel regions of the same color in the spliced ​​display area are different from the areas of sub-pixel regions of the same color in the first display area.

[0012] Optionally, the areas of multiple sub-pixel regions of the same color within the spliced ​​display area may be the same or not completely identical.

[0013] Optionally, the shapes of the plurality of sub-pixel regions in the first display area and the second display area are the same, and the shapes of the plurality of sub-pixel regions in the spliced ​​display area are different from the shapes of the plurality of sub-pixel regions in the first display area.

[0014] Optionally, the light-emitting units of the same color sub-pixel regions in the first and second display areas have the same cavity length, and the light-emitting units of the same color sub-pixel regions in the spliced ​​display area have different cavity lengths than the light-emitting units of the same color sub-pixel regions in the first display area.

[0015] Optionally, the cavity lengths of the corresponding optical cavities of the light-emitting units of multiple sub-pixel regions of the same color within the spliced ​​display area may be the same or not completely identical.

[0016] Optionally, the multiple functional film layers of the light-emitting unit include an OLED, an insulating layer located between the OLED and the substrate, and the thickness of the insulating layer of the same color sub-pixel region in the splicing display area is different from the thickness of the insulating layer of the same color sub-pixel region in the first display area, so that the cavity length of the corresponding optical cavity of the sub-pixel region of the same color in the splicing display area is different from the cavity length of the corresponding optical cavity of the sub-pixel region of the same color in the first display area.

[0017] Optionally, the multiple functional film layers of the light-emitting unit include an OLED and a reflective layer located between the OLED and the substrate; the thickness of the reflective layer of the sub-pixel region of the same color in the splicing display area is different from the thickness of the reflective layer of the sub-pixel region of the same color in the first display area, so that the cavity length of the corresponding optical cavity of the sub-pixel region of the same color in the splicing display area is different from the cavity length of the corresponding optical cavity of the sub-pixel region of the same color in the first display area.

[0018] Optionally, the multiple functional film layers of the light-emitting unit include an OLED, a reflective layer located between the OLED and the substrate, and a pad layer located between the OLED and the reflective layer; the thickness of the pad layer in the sub-pixel area of ​​the same color in the splicing display area is different from the thickness of the pad layer in the sub-pixel area of ​​the same color in the first display area, so that the cavity length of the corresponding optical cavity in the sub-pixel area of ​​the same color in the splicing display area is different from the cavity length of the corresponding optical cavity in the sub-pixel area of ​​the same color in the first display area.

[0019] Optionally, the multiple functional film layers of the light-emitting unit include an OLED, which includes an anode, a cathode, and an organic light-emitting layer located between the anode and the cathode; the thickness of the anode of the sub-pixel region of the same color in the splicing display area is different from the thickness of the anode of the sub-pixel region of the same color in the first display area, so that the cavity length of the corresponding optical cavity of the sub-pixel region of the same color in the splicing display area is different from the cavity length of the corresponding optical cavity of the sub-pixel region of the same color in the first display area.

[0020] Optionally, when the multiple functional film layers of the light-emitting unit include a color filter layer, the thickness of the color filter layer of the sub-pixel region of the same color in the spliced ​​display area is different from the thickness of the color filter layer of the sub-pixel region of the same color in the first display area, so that the cavity length of the corresponding optical cavity of the sub-pixel region of the same color is different from the cavity length of the corresponding optical cavity of the sub-pixel region of the same color in the first display area.

[0021] Optionally, when the multiple functional film layers of the light-emitting unit include optical lens layers, the thickness of the optical lens layer of the sub-pixel region of the same color in the spliced ​​display area is different from the thickness of the optical lens layer of the sub-pixel region of the same color in the first display area, so that the cavity length of the corresponding optical cavity of the sub-pixel region of the same color is different from the cavity length of the corresponding optical cavity of the sub-pixel region of the same color in the first display area.

[0022] The present invention also provides a display device, including the display panel described in the present invention.

[0023] The technical solution of this invention has the following technical effects:

[0024] The display panel provided by this invention has a pixel-defining layer on a substrate with multiple spaced pixel openings. The pixel openings in the splicing display area include a first type of pixel opening and a second type of pixel opening, with a first splicing line formed by the pixel-defining layer between the first and second types of pixel openings. The target functional film layer in the splicing display area includes a first type of target functional film layer and a second type of target functional film layer, with a second splicing line between the first and second types of target functional film layers. By setting the orthographic projections of the first and second splicing lines on the substrate to be at least partially non-overlapping, the position of the splicing line can be visually softened, avoiding splicing defects caused by bright or dark splicing lines in the splicing display area. This achieves a smooth transition of brightness and color within the splicing display area, thereby improving the display effect of the display panel. Attached Figure Description

[0025] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0026] Figure 1 A schematic diagram of the structure of a display panel provided for related technologies;

[0027] Figure 2 This is a top view of the pixel opening provided in some embodiments of the present invention;

[0028] Figure 3 A top view of a color filter layer provided in some embodiments of the present invention;

[0029] Figure 4 A top view of an optical lens layer provided in some embodiments of the present invention;

[0030] Figure 5 This is a schematic diagram of the structure of a display panel provided in some embodiments of the present invention;

[0031] Figure 6 This is a schematic diagram of another structure of a display panel provided in some embodiments of the present invention;

[0032] Figure 7 This is a schematic diagram of another structure of a display panel provided in some embodiments of the present invention;

[0033] Figure 8 This is a schematic diagram of another structure of a display panel provided in some embodiments of the present invention;

[0034] Figure 9 This is a schematic diagram of another structure of a display panel provided in some embodiments of the present invention;

[0035] Figure 10 This is a schematic diagram of another structure of a display panel provided in some embodiments of the present invention. Detailed Implementation

[0036] The technical solutions of this application will now be clearly and thoroughly described with reference to the accompanying drawings of the embodiments of this application. Obviously, the embodiments described below are only some, not all, embodiments of this application, and are merely used to more clearly illustrate the technical solutions of this application. Therefore, they are only examples and should not be used to limit the scope of protection of this application. Based on the described embodiments of this application, all other embodiments that can be obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0037] Unless otherwise defined, all technical and scientific terms used herein should have the meaning commonly understood by one of ordinary skill in the art. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of the application. The terms "comprising" and "having," and any variations thereof, in the embodiments of this application, are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the embodiments of this application are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary / secondary relationship of the indicated technical features. In the embodiments of this application, unless otherwise stated, "a plurality of" means two or more.

[0038] In the embodiments of this application, the orientations or positional relationships indicated by terms such as "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the purpose of facilitating the description of the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0039] In this application embodiment, terms such as "install," "connect," "join," and "fix" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this application embodiment can be understood according to the specific circumstances.

[0040] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0041] refer to Figure 1 The display panel in the related technology includes: a substrate 1, on which multiple display areas are included; a pixel defining layer 2, located on the substrate 1, having multiple spaced pixel openings, the pixel openings defining multiple sub-pixel regions in the display areas on the substrate 1; each sub-pixel region includes: a light-emitting unit, the light-emitting unit including multiple functional film layers, the multiple functional film layers being used to emit display light. The multiple functional film layers include at least an OLED 3, a color filter layer 4 located on the side of the OLED 3 facing away from the substrate 1, and an optical lens layer 5 located on the side of the color filter layer 4 facing away from the substrate 1. The OLED 3 includes an anode 31, a cathode 32, and an organic light-emitting layer 33 located between the anode 31 and the cathode 32. When the screen size of the display panel is large, when forming the multiple film layer patterns of the display panel, it is necessary to use a stitching exposure method of two or more times to expose the pixel defining layer 2, the color filter layer 4, and the optical lens layer 5 separately to form the desired patterns of each film layer. For ease of connection, multiple display areas on the substrate 1 are defined, including adjacent first and second display areas, and a splicing display area (not shown) located between the first and second display areas.

[0042] There are two main methods for splicing exposure. The first method is repeated exposure of the splicing display area. That is, a mask is used to expose the first display area and the splicing display area for the first time, and then a mask is used to expose the second display area and the splicing display area for the second time. As can be seen, since the splicing display area is exposed twice, the display panel will produce bright or dark splicing lines in the splicing display area, resulting in poor splicing. Specifically, due to the different properties of the photoresist used in the exposure process of the pixel limiting layer 2, color filter layer 4, and optical lens layer 5, positive photoresist is used in the exposure process of the pixel limiting layer 2. After the exposure process of the pixel limiting layer 2, the pixel opening in the splicing display area is larger than the pixel opening in other display areas (the first display area and the second display area), which can emit more display light, resulting in a bright splicing line on the display panel in the splicing display area. Similarly, positive or negative photoresist is used in the exposure process of the color filter layer 4. When positive photoresist is used, after the exposure process of the color filter layer 4, the size of the color filter layer 4 in the splicing display area is larger than the size of the color filter layer 4 in other display areas (the first display area and the second display area), which can emit more display light, resulting in a bright splicing line on the display panel in the splicing display area. When negative photoresist is used, the color filter layer 4 in the splicing display area is smaller than that in other display areas (first display area and second display area) after the exposure process. This allows less light to pass through, resulting in dark lines in the splicing display area. Similarly, when optical adhesive is used to expose the optical lens layer 5, the radius of the optical lens layer 5 in the splicing display area is smaller than that in other display areas (first display area and second display area). This allows less light to pass through, resulting in dark lines in the splicing display area.

[0043] The second method is mosaic-style splicing exposure. For example, the exposure process for pixel-defining layer 2 includes: exposing the pixel-defining layer 2 of the first display area and a portion of the pixel-defining layer 2 of the splicing display area once to form a first type of pixel opening; exposing the pixel-defining layer 2 of the second display area and another portion of the pixel-defining layer 2 of the splicing display area once to form a second type of pixel opening. The first and second type of pixel openings in the splicing display area are complementary mosaic openings. This can greatly blur the splicing boundary and weaken the problem of bright or dark lines appearing in the splicing display area. However, when using masks in the two exposures of the splicing display area, there is usually a misalignment, resulting in a difference in the spacing between adjacent first and second type pixel openings in the splicing display area compared to the spacing between two adjacent first type pixel openings in the first display area and the spacing between two adjacent second type pixel openings in the second display area. Therefore, the mosaic-style splicing exposure method is usually used in large-size OLED display panels and does not present obvious problems to the human eye.

[0044] However, in AR or VR display products, silicon-based OLED display panels are the preferred display panels. The pixel resolution of silicon-based OLED display panels (3000 PPI to 6000 PPI) is greater than that of large-size OLED display panels (300 PPI to 600 PPI). Therefore, silicon-based OLED display panels usually need to be used with an optical system with a certain magnification. When the splicing lines formed by the pixel limiting layer 2, the splicing lines formed between the color filter layers 4, and the splicing lines formed between the optical lens layers 5 overlap on the substrate 1, the effect of using mosaic splicing exposure to weaken the problem of bright or dark splicing lines in the splicing display area is reduced, making the splicing defects more obvious and resulting in poor display effect of silicon-based OLED display panels.

[0045] Therefore, there is an urgent need to provide a display panel and display device to solve the problem of poor display effect caused by poor splicing due to splicing exposure of the display panel.

[0046] Based on this, combined Figures 2 to 5As shown, some embodiments of the present invention provide a display panel, including: a substrate 100, the substrate 100 including a plurality of display areas, the plurality of display areas including an adjacent first display area B1 and a second display area B2, and a splicing display area B3 located between the first display area B1 and the second display area B2; a pixel defining layer 200 located on the substrate 100, the pixel defining layer 200 having a plurality of spaced pixel openings 300, the pixel openings 300 defining a plurality of sub-pixel regions in the display areas on the substrate 100; the sub-pixel regions including: light-emitting units, the light-emitting units including a plurality of functional film layers, the plurality of functional film layers for emitting display light, wherein the pixel openings 300 in the splicing display area B3 include a first type of pixel opening 300a and a second type of pixel opening 300b (see reference). Figure 2 A first splicing line is formed between the first type of pixel opening 300a and the second type of pixel opening 300b, and the first splicing line is formed by the pixel defining layer 200; and wherein, a plurality of functional film layers include a target functional film layer 400, and the target functional film layer 400 in the splicing display area includes a first type of target functional film layer 400a and a second type of target functional film layer 400b (see reference). Figure 3 and Figure 4 The first type of target functional film layer 400a and the second type of target functional film layer 400b have a second splicing line, and the orthographic projection of the first splicing line on the substrate 100 and the orthographic projection of the second splicing line on the substrate 100 do not overlap at least partially.

[0047] In this embodiment, the pixel defining layer 200 on the substrate 100 has a plurality of spaced pixel openings 300. The pixel openings 300 in the splicing display area B3 include a first type of pixel opening 300a and a second type of pixel opening 300b. A first splicing line formed by the pixel defining layer 200 is formed between the first type of pixel opening 300a and the second type of pixel opening 300b. The target functional film layer 400 in the splicing display area B3 includes a first type of target functional film layer 400a and a second type of target functional film layer 400b. A second splicing line is formed between the first type of target functional film layer 400a and the second type of target functional film layer 400b. By setting the orthographic projection of the first splicing line on the substrate 100 and the orthographic projection of the second splicing line on the substrate 100 to be at least partially non-overlapping, the position of the splicing line can be visually reduced, avoiding splicing defects caused by bright or dark splicing lines in the splicing display area B3. This achieves a smooth transition of brightness and color in the splicing display area B3, thereby improving the display effect of the display panel.

[0048] The orthographic projections of the first splicing line on the substrate 100 and the second splicing line on the substrate 100 are at least partially non-overlapping. This can be either partially overlapping and partially non-overlapping, or completely non-overlapping. When the first and second orthographic projections of the first splicing line on the substrate 100 are completely non-overlapping, the effect of visually improving the smooth transition of brightness and color in the spliced ​​display area B3 is enhanced, further improving the display effect of the display panel. In some embodiments, the first type of pixel opening 300a and the pixel opening 300 of the first display area B1 are formed in a single process, the second type of pixel opening 300b and the pixel opening 300 of the second display area B2 are formed in a single process, and the pixel openings 300 of the first display area B1 and the second display area B2 are formed in different processes; the first type of target functional film layer 400a and the target functional film layer 400 of the first display area B1 are formed in a single process, the second type of target functional film layer 400b and the target functional film layer 400 of the second display area B2 are formed in a single process, and the target functional film layers 400 of the first display area B1 and the second display area B2 are formed in different processes. All of the above processes are exposure processes, adjusting the arrangement of the first type of pixel opening 300a and the second type of pixel opening 300b, as well as the arrangement of the first type of target functional film layer 400a and the second type of target functional film layer 400b, by adjusting the pattern on the photomask. This eliminates the need to increase the number of production steps, resulting in low manufacturing costs.

[0049] Specifically, the first type of pixel opening 300a and the pixel opening 300 of the first display area B1 are transferred from the first photolithographic mask to a portion of the pixel-defining layer 200 of the splicing display area B3 and the entire pixel-defining layer 200 of the first display area B1 through an exposure process using a first photolithographic mask. The second type of pixel opening 300b and the pixel opening 300 of the second display area B2 are transferred from the second photolithographic mask to another portion of the pixel-defining layer 200 of the splicing display area B3 and the entire pixel-defining layer 200 of the second display area B2 through an exposure process using a second photolithographic mask. The pattern on the first photolithographic mask used to form the first type of pixel opening 300a and the pattern on the second photolithographic mask used to form the second type of pixel opening 300b are complementary mosaic patterns, resulting in a mosaic distribution of the first type of pixel opening 300a and the second type of pixel opening 300b in the splicing display area B3.

[0050] Similarly, the first type of target functional film layer 400a and the target functional film layer 400 of the first display area B1 are transferred from the third photolithographic mask to a portion of the target functional film layer 400 of the splicing display area B3 and the entire target functional film layer 400 of the first display area B1 through an exposure process using a third photolithographic mask. The second type of target functional film layer 400b and the target functional film layer 400 of the second display area B2 are transferred from the fourth photolithographic mask to another portion of the target functional film layer 400 of the splicing display area B3 and the entire target functional film layer 400 of the second display area B2 through an exposure process using a fourth photolithographic mask. The pattern on the third photolithographic mask used to form the first type of target functional film layer 400a and the pattern on the fourth photolithographic mask used to form the second type of target functional film layer 400b are complementary mosaic patterns, resulting in a mosaic distribution of the first type of target functional film layer 400a and the second type of target functional film layer 400b. In other embodiments, the first type of pixel openings and the second type of pixel openings are distributed in other irregular forms, and the first type of target functional film layer and the second type of target functional film layer are distributed in other irregular forms in the splicing display area B3.

[0051] The first splicing line between the first type of pixel opening 300a and the second type of pixel opening 300b within the splicing display area B3 can be a straight line, a broken line, or a curve, or it can be randomly distributed within the splicing display area B3 (e.g., ...). Figure 2 (As shown). The disordered distribution of the first splicing line in the splicing display area B3 can refer to the disordered and overlapping distribution of the first type of pixel opening 300a and the second type of pixel opening 300b within the splicing display area B3.

[0052] Similarly, the second splicing line between the first type of target functional film layer 400a and the second type of target functional film layer 400b within the splicing display area B3 can also be a straight line, a broken line, or a curve, or it can be randomly distributed within the splicing display area B3. The random distribution of the second splicing line within the splicing display area B3 can refer to the random, overlapping distribution of the first type of target functional film layer 400a and the second type of target functional film layer 400b within the splicing display area B3.

[0053] In some embodiments, reference Figure 3 The target functional layer 400 includes a color filter layer 410, which includes a first type of color filter layer 410a and a second type of color filter layer 410b located within the splicing display area B3. The second splicing line includes a first sub-splicing line formed by the gap between the first type of color filter layer 410a and the second type of color filter layer 410b, and / or, refer to Figure 4The target functional layer 400 includes an optical lens layer 420, which includes a first type of optical lens layer 420a and a second type of optical lens layer 420b located within the splicing display area B3. The second splicing line includes a second sub-splicing line formed by the gap between the first type of optical lens layer 420a and the second type of optical lens layer 420b. The orthographic projection of the first sub-splicing line formed by the color filter layer 410 on the substrate 100 and the orthographic projection of the second sub-splicing line formed by the optical lens layer 420 on the substrate 100 are completely overlapping or at least partially non-overlapping.

[0054] The orthographic projections of the first sub-segmentation line and the second sub-segmentation line on the substrate 100 are at least partially non-overlapping. Specifically, they may partially overlap and partially non-overlap, or they may be completely non-overlapping. When the orthographic projections of the first and second sub-segmentation lines on the substrate 100 are completely non-overlapping, the effect of visually improving the smooth transition of brightness and color in the spliced ​​display area B3 is enhanced, further improving the display effect of the display panel.

[0055] In some embodiments, reference Figures 5 to 10 In any two adjacent color filter layers 410, one color filter layer 410 extends to cover the other color filter layer 410 away from the surface of the substrate 100. A color filter mixing layer is formed between adjacent color filter layers 410, wherein the colors of adjacent color filter layers 410 are different, and the color of the color filter mixing layer is a mixture of the colors of adjacent color filter layers 410. The first sub-splicing line between the first type of color filter layer 410a and the second type of color filter layer 410b can be formed by the color filter mixing layer. Figure 3 The black area represents the color filter overlay region between adjacent color filter layers 410. The color of color filter layer 410 is the same as the color of the corresponding sub-pixel region.

[0056] In some embodiments, the sub-pixel region includes a light-emitting unit, which includes multiple functional film layers for emitting display light; wherein, a portion of the functional film layers in the sub-pixel region emits display light of a first color, another portion emits display light of a second color, and yet another portion emits display light of a third color. The first, second, and third colors may be, but are not limited to, red, green, and blue. The color of the sub-pixel region is the same as the color of the display light emitted by the functional film layers of that sub-pixel region.

[0057] In some embodiments, the color filter layer may include a red color filter layer, a green color filter layer, and a blue color filter layer, which are respectively capable of transmitting red light, green light, and blue light. The color filter stack layer between adjacent color filter layers 410 includes a stack of any two of the red color filter layer, green color filter layer, and blue color filter layer.

[0058] In some embodiments, the color filter layer is located within a plurality of sub-pixel regions, and the color filter layer is disposed opposite to the pixel opening. A black matrix (not shown) is disposed between adjacent color filter layers. The first sub-seamnotation line between the first type of color filter layer and the second type of color filter layer can be formed by the black matrix, that is, Figure 3 The black areas in the image represent a black matrix. Setting a black matrix can also prevent color crosstalk between sub-pixel regions.

[0059] In some embodiments, when the target functional layer 400 includes a color filter layer 410 and an optical lens layer 4250, at least two or three of the orthographic projections of the first splicing line on the substrate 100, the orthographic projections of the first sub-splicing line on the substrate 100, and the orthographic projections of the second sub-splicing line on the substrate 100 do not overlap.

[0060] The orthographic projections of the first splicing line on the substrate 100, the orthographic projections of the first sub-splicing line on the substrate 100, and the orthographic projections of the second sub-splicing line on the substrate 100 may be at least partially non-overlapping. Alternatively, the orthographic projections of the first splicing line on the substrate 100, the orthographic projections of the first sub-splicing line on the substrate 100, and the orthographic projections of the second sub-splicing line on the substrate 100 may be partially and partially overlapping. Or, the orthographic projections of the first splicing line on the substrate 100, the orthographic projections of the first sub-splicing line on the substrate 100, and the orthographic projections of the second sub-splicing line on the substrate 100 may be completely non-overlapping.

[0061] In some embodiments, the orthographic projections of the first splicing line on the substrate 100, the first sub-splicing line on the substrate 100, and the second sub-splicing line on the substrate 100 are partially overlapping and partially non-overlapping, as illustrated. Figures 2 to 4 The results show that the orthographic projections of the first type of pixel opening 300a on the substrate 100, the orthographic projections of the first type of color filter layer 410a on the substrate 100, and the orthographic projections of the first type of optical lens layer 420a on the substrate 100 partially overlap and partially do not overlap; the orthographic projections of the second type of pixel opening 300b on the substrate 100, the orthographic projections of the second type of color filter layer 410b on the substrate 100, and the orthographic projections of the second type of optical lens layer 420b on the substrate 100 partially overlap.

[0062] In other embodiments, the positional relationship between the orthographic projection of the first splicing line on the substrate, the orthographic projection of the first sub-splicing line on the substrate, and the orthographic projection of the second sub-splicing line on the substrate can be any relationship that satisfies the above-described limitations, and will not be elaborated here.

[0063] In this embodiment, the first type of color filter layer 410a and the second type of color filter layer 410b are arranged in a mosaic pattern, as are the first type of optical lens layer 420a and the second type of optical lens layer 420b. In other embodiments, the first type of color filter layer and the second type of color filter layer are arranged in other irregular patterns, as are the first type of optical lens layer and the second type of optical lens layer.

[0064] The first sub-splitting line between the first type of color filter layer 410a and the second type of color filter layer 410b within the splicing display area B3 can also be a straight line, a broken line, or a curve, or it can be randomly distributed within the splicing display area B3. The random distribution of the first sub-splitting line within the splicing display area B3 can refer to the random, overlapping distribution of the first type of color filter layer 410a and the second type of color filter layer 410b within the splicing display area B3.

[0065] The second sub-splitting line between the first type of optical lens layer 420a and the second type of optical lens layer 420b within the splicing display area B3 can also be a straight line, a broken line, or a curve, or it can be randomly distributed within the splicing display area B3. The random distribution of the second sub-splitting line within the splicing display area B3 can refer to the random, intersecting distribution of the first type of optical lens layer 420a and the second type of optical lens layer 420b within the splicing display area B3.

[0066] In some embodiments, the spacing between two adjacent sub-pixel regions in the first display area B1 is the same as the spacing between two adjacent sub-pixel regions in the second display area B2, and the spacing between two adjacent sub-pixel regions in the spliced ​​display area B3 is different from the spacing between two adjacent sub-pixel regions in the first display area B1. The spacing between two adjacent sub-pixel regions in the spliced ​​display area B3 can be irregular and disordered compared to the spacing between two adjacent sub-pixel regions in the first display area B1 and the second display area B2, visually enhancing the smooth transition of brightness and color in the spliced ​​display area B3. In other embodiments, the spacing between two adjacent sub-pixel regions in the first display area is the same as the spacing between two adjacent sub-pixel regions in the second display area, and the spacing between two adjacent sub-pixel regions in the spliced ​​display area is the same as the spacing between two adjacent sub-pixel regions in the first display area.

[0067] In some embodiments, the multiple sub-pixel regions within the splicing display area B3 include a first type of sub-pixel region defined by a first type of pixel opening 300a and a second type of sub-pixel region defined by a second type of pixel opening 300b. The spacing between adjacent first type of sub-pixel regions and second type of sub-pixel regions is different from the spacing between two adjacent sub-pixel regions within the first display area and the second display area.

[0068] refer to Figure 2 In the first display area B1, the spacing distance D11 between two adjacent pixel openings 300 is the same as the spacing distance D12 between two adjacent pixel openings 300 in the second display area B2. However, the spacing distance D13 between two adjacent pixel openings 300 in the spliced ​​display area B3 is different from the spacing distance D11 between two adjacent pixel openings 300 in the first display area B1. In other embodiments, the spacing distance between two adjacent pixel openings in the first display area is the same as the spacing distance between two adjacent pixel openings in the second display area, and the spacing distance between two adjacent pixel openings in the spliced ​​display area is the same as the spacing distance between two adjacent pixel openings in the first display area.

[0069] refer to Figure 3 In the first display area B1, the spacing distance D21 between two adjacent color filter layers 410 is the same as the spacing distance D22 between two adjacent color filter layers 410 in the second display area B2. However, the spacing distance D23 between two adjacent color filter layers 410 in the spliced ​​display area B3 is different from the spacing distance D21 between two adjacent color filter layers 410 in the first display area B1. In other embodiments, the spacing distance between two adjacent color filter layers in the first display area is the same as the spacing distance between two adjacent color filter layers in the second display area, and the spacing distance between two adjacent color filter layers in the spliced ​​display area is the same as the spacing distance between two adjacent color filter layers in the first display area.

[0070] refer to Figure 4 In the first display area B1, the spacing distance D31 between two adjacent optical lens layers 420 is the same as the spacing distance D32 between two adjacent optical lens layers 420 in the second display area B2. However, the spacing distance D33 between two adjacent optical lens layers 420 in the spliced ​​display area B3 is different from the spacing distance D31 between two adjacent optical lens layers 420 in the first display area B1. In other embodiments, the spacing distance between two adjacent optical lens layers in the first display area is the same as the spacing distance between two adjacent optical lens layers in the second display area, and the spacing distance between two adjacent optical lens layers in the spliced ​​display area is the same as the spacing distance between two adjacent optical lens layers in the first display area.

[0071] In some embodiments, the spacing between any two adjacent sub-pixel regions within the splicing display area B3 may be the same or not entirely the same. The spacing between any two adjacent sub-pixel regions within the splicing display area B3 may not be entirely the same; it could be that the spacing between any two adjacent sub-pixel regions within the splicing display area B3 is partially the same and partially different, or it could be that the spacing between any two adjacent sub-pixel regions within the splicing display area B3 is completely different. This irregular and disordered spacing between any two adjacent sub-pixel regions within the splicing display area B3 visually enhances the smoothness of the brightness and color transitions in the splicing display area B3.

[0072] In some embodiments, the spacing distance D13 between any two adjacent pixel openings 300 within the splicing display area B3 may be the same or not exactly the same. Figure 2 The example illustrates that the spacing distance D13 between any two adjacent pixel openings 300 within the splicing display area B3 is the same. However, the spacing distance D13 between any two adjacent pixel openings 300 within the splicing display area B3 is not entirely the same. It can be that the spacing distance D13 between any two adjacent pixel openings 300 within the splicing display area B3 is partially the same and partially different, or it can be that the spacing distance D13 between any two adjacent pixel openings 300 within the splicing display area B3 is completely different.

[0073] In some embodiments, the spacing distance D23 between any two adjacent color filter layers 410 within the splicing display area B3 may be the same or not exactly the same. Figure 3 The diagram illustrates that the spacing distance D23 between any two adjacent color filter layers 410 within the splicing display area B3 is the same. However, the spacing distance D23 between any two adjacent color filter layers 410 within the splicing display area B3 is not entirely the same. It can be that the spacing distance D23 between any two adjacent color filter layers 410 within the splicing display area B3 is partially the same and partially different, or it can be that the spacing distance D23 between any two adjacent color filter layers 410 within the splicing display area B3 is completely different.

[0074] In some embodiments, the spacing distance D33 between any two adjacent optical lens layers 420 within the splicing display area B3 may be the same or not exactly the same. Figure 4 The diagram illustrates that the spacing distance D33 between any two adjacent optical lens layers 420 within the splicing display area B3 is the same. The spacing distance D33 between any two adjacent optical lens layers 420 within the splicing display area B3 is not completely the same. It can be that the spacing distance D33 between any two adjacent optical lens layers 420 within the splicing display area B3 is partially the same and partially different, or it can be that the spacing distance D33 between any two adjacent optical lens layers 420 within the splicing display area B3 is completely different.

[0075] In some embodiments, the spacing between any two adjacent sub-pixel regions within the splicing display area B3 is a randomly selected value within a range between a first preset maximum value and a first preset minimum value; the difference between the first preset maximum value and the first preset minimum value is less than or equal to 0.1 μm, for example, 0 μm, 0.05 μm, or 0.1 μm. If the difference between the first preset maximum value and the first preset minimum value is too large, it affects signal transmission between two adjacent sub-pixel regions, and the splicing display area B3 is prone to visual unevenness, such as uneven brightness and color deviation. Therefore, a difference between the first preset maximum value and the first preset minimum value of less than or equal to 0.1 μm is more effective in visually improving the smooth transition of brightness and color in the splicing display area B3. It should be noted that the difference between the first preset maximum value and the first preset minimum value is not limited to this.

[0076] In some embodiments, the spacing D13 between any two adjacent pixel openings 300 within the splicing display area B3 is a randomly selected value within a range between a first preset maximum value and a first preset minimum value; the difference between the first preset maximum value and the first preset minimum value is less than or equal to 0.1 μm, for example, 0 μm, 0.05 μm, or 0.1 μm. In other embodiments, the difference between the first preset maximum value and the first preset minimum value is not limited to this.

[0077] In some embodiments, the spacing D23 between any two adjacent color filter layers 410 within the splicing display area B3 is a randomly selected value within a range between a first preset maximum value and a first preset minimum value; the difference between the first preset maximum value and the first preset minimum value is less than or equal to 0.1 μm, for example, 0 μm, 0.05 μm, or 0.1 μm. In other embodiments, the difference between the first preset maximum value and the first preset minimum value is not limited to this.

[0078] In some embodiments, the spacing D33 between any two adjacent optical lens layers 420 within the splicing display area B3 is a randomly selected value within a range between a first preset maximum value and a first preset minimum value; the difference between the first preset maximum value and the first preset minimum value is less than or equal to 0.1 μm, for example, 0 μm, 0.05 μm, or 0.1 μm. In other embodiments, the difference between the first preset maximum value and the first preset minimum value is not limited to this.

[0079] In some embodiments, the areas of sub-pixel regions of the same color in the first display area B1 and the second display area B2 are the same, and the area of ​​the sub-pixel region of the same color in the spliced ​​display area B3 is different from the area of ​​the sub-pixel region of the same color in the first display area B1. The area of ​​the sub-pixel region of the same color in the spliced ​​display area B3 is irregular and disordered compared to the areas of the sub-pixel regions of the same color in the first display area B1 and the second display area B2, which visually enhances the smoothness of the brightness and color transition in the spliced ​​display area B3. In other embodiments, the areas of sub-pixel regions of the same color in the first display area and the second display area are the same, and the area of ​​the sub-pixel region of the same color in the spliced ​​display area is the same as the area of ​​the sub-pixel region of the same color in the first display area.

[0080] In this embodiment, the color of the sub-pixel region is the same as the color of the display light emitted by the functional film layer. The color of the sub-pixel region includes one of red, green, and blue.

[0081] In some embodiments, the pixel openings 300 corresponding to sub-pixel regions of the same color in the first display area B1 and the second display area B2 have the same area, and the area of ​​the pixel openings 300 corresponding to sub-pixel regions of the same color in the spliced ​​display area B3 is different from the area of ​​the pixel openings corresponding to the sub-pixel regions of the same color in the first display area B1. In other embodiments, the pixel openings corresponding to sub-pixel regions of the same color in the first and second display areas have the same area, and the area of ​​the pixel openings corresponding to sub-pixel regions of the same color in the spliced ​​display area is the same as the area of ​​the pixel openings corresponding to the sub-pixel regions of the same color in the first display area. The color of the organic light-emitting layer formed in the pixel opening 300 is the same as the color of the corresponding sub-pixel region.

[0082] In some embodiments, the areas of the color filter layers 410 corresponding to the same color sub-pixel regions in the first display area B1 and the second display area B2 are the same, and the areas of the color filter layers 410 corresponding to the same color sub-pixel regions in the spliced ​​display area B3 are different from the areas of the color filter layers 410 corresponding to the same color sub-pixel regions in the first display area B1. In other embodiments, the areas of the color filter layers corresponding to the same color sub-pixel regions in the first display area and the second display area are the same, and the areas of the color filter layers corresponding to the same color sub-pixel regions in the spliced ​​display area are the same as the areas of the color filter layers corresponding to the same color sub-pixel regions in the first display area. The color filter layers 410 and the corresponding sub-pixel regions are the same color.

[0083] In some embodiments, the areas of the optical lens layers 420 corresponding to the same color sub-pixel regions in the first display area B1 and the second display area B2 are the same, and the area of ​​the optical lens layer 420 corresponding to the same color sub-pixel region in the spliced ​​display area B3 is different from the area of ​​the optical lens layer 420 corresponding to the same color sub-pixel region in the first display area B1. In other embodiments, the areas of the optical lens layers corresponding to the same color sub-pixel regions in the first and second display areas are the same, and the area of ​​the optical lens layer corresponding to the same color sub-pixel region in the spliced ​​display area is the same as the area of ​​the optical lens layer corresponding to the same color sub-pixel region in the first display area. The optical lens layer 420 and the corresponding sub-pixel region are the same color.

[0084] In some embodiments, the areas of multiple sub-pixel regions of the same color within the splicing display area B3 may be the same or not completely identical. The areas of multiple sub-pixel regions of the same color within the splicing display area B3 not being completely identical can mean that the areas of the multiple sub-pixel regions of the same color within the splicing display area B3 are partially the same and partially different, or that the areas of the multiple sub-pixel regions of the same color within the splicing display area B3 are completely different. The irregular and disordered design of the areas of the multiple sub-pixel regions of the same color within the splicing display area B3 enhances the visual effect of smoothing the brightness and color transition of the splicing display area B3.

[0085] In some embodiments, the pixel openings 300 corresponding to multiple sub-pixel regions of the same color within the splicing display area B3 may have the same or different areas. Figure 2 The diagram illustrates that the pixel openings 300 corresponding to multiple sub-pixel regions of the same color within the splicing display area B3 have the same area. However, the pixel openings 300 corresponding to multiple sub-pixel regions of the same color within the splicing display area B3 may not be completely identical. This could mean that the pixel openings 300 corresponding to multiple sub-pixel regions of the same color within the splicing display area B3 are partially the same and partially different, or that the pixel openings 300 corresponding to multiple sub-pixel regions of the same color within the splicing display area B3 are completely different.

[0086] In some embodiments, the areas of the color filter layers 410 corresponding to multiple sub-pixel regions of the same color within the splicing display area B3 may be the same or not completely identical. Figure 3 The diagram illustrates that the areas of the color filter layers 410 corresponding to multiple sub-pixel regions of the same color within the splicing display area B3 are the same. However, the areas of the color filter layers 410 corresponding to multiple sub-pixel regions of the same color within the splicing display area B3 are not entirely the same. It can be that the areas of the color filter layers 410 corresponding to multiple sub-pixel regions of the same color within the splicing display area B3 are partially the same and partially different, or it can be that the areas of the color filter layers 410 corresponding to multiple sub-pixel regions of the same color within the splicing display area B3 are completely different.

[0087] In some embodiments, the areas of the optical lens layers 420 corresponding to multiple sub-pixel regions of the same color within the splicing display area B3 may be the same or not completely identical. Figure 4 The example illustrates that the areas of the optical lens layers 420 corresponding to multiple sub-pixel regions of the same color within the splicing display area B3 are the same. However, the areas of the optical lens layers 420 corresponding to multiple sub-pixel regions of the same color within the splicing display area B3 are not entirely the same. It could be that the areas of the optical lens layers 420 corresponding to multiple sub-pixel regions of the same color within the splicing display area B3 are partially the same and partially different, or it could be that the areas of the optical lens layers 420 corresponding to multiple sub-pixel regions of the same color within the splicing display area B3 are completely different.

[0088] In some embodiments, the area of ​​multiple sub-pixel regions of the same color within the splicing display area B3 is a randomly selected value within a range between a second preset maximum value and a second preset minimum value; the difference between the second preset maximum value and the second preset minimum value is less than or equal to 0.15 μm. 2 For example, 0μm 2 0.05μm 2 or 0.15μm 2 If the difference between the first preset maximum value and the first preset minimum value is too large, it will affect the signal transmission between two adjacent sub-pixel areas, and the spliced ​​display area B3 will easily show visual unevenness, such as uneven brightness and color deviation. Therefore, the difference between the first preset maximum value and the first preset minimum value should be less than or equal to 0.15μm. 2 This improves the visual smoothness of the brightness and color transition in the splicing display area B3. It should be noted that the difference between the second preset maximum value and the second preset minimum value is not limited to this.

[0089] The area of ​​the sub-pixel region is the cross-sectional area of ​​the sub-pixel region along the surface of the substrate 100.

[0090] In some embodiments, the area of ​​the pixel opening 300 corresponding to multiple sub-pixel regions of the same color within the splicing display area B3 is a randomly selected value within a range between a second preset maximum value and a second preset minimum value; the difference between the second preset maximum value and the second preset minimum value is less than or equal to 0.15 μm. 2 For example, 0μm 2 0.05μm 2 or 0.15μm 2 In other embodiments, the difference between the second preset maximum value and the second preset minimum value is not limited to this.

[0091] In some embodiments, the area of ​​the color filter layer 410 corresponding to multiple sub-pixel regions of the same color within the splicing display area B3 is a randomly selected value within a range between a second preset maximum value and a second preset minimum value; the difference between the second preset maximum value and the second preset minimum value is less than or equal to 0.15 μm. 2 For example, 0μm 2 0.05μm 2 or 0.15μm 2 In other embodiments, the difference between the second preset maximum value and the second preset minimum value is not limited to this.

[0092] In some embodiments, the area of ​​the optical lens layer 420 corresponding to multiple sub-pixel regions of the same color within the splicing display area B3 is a randomly selected value within a range between a second preset maximum value and a second preset minimum value; the difference between the second preset maximum value and the second preset minimum value is less than or equal to 0.15 μm. 2 For example, 0μm 2 0.05μm 2 or 0.15μm 2 In other embodiments, the difference between the second preset maximum value and the second preset minimum value is not limited to this.

[0093] In some embodiments, the shapes of multiple sub-pixel regions within the first display area B1 and the second display area B2 are identical, while the shapes of multiple sub-pixel regions within the spliced ​​display area B3 are different from those within the first display area B1. The irregular and disordered design of the shapes of the multiple sub-pixel regions within the spliced ​​display area B3 compared to those within the first and second display areas B1 enhances the smoothness of the brightness and color transitions in the spliced ​​display area B3. In other embodiments, the shapes of multiple sub-pixel regions within the first and second display areas are identical, and the shapes of the multiple sub-pixel regions within the spliced ​​display area are identical to those within the first display area.

[0094] In some embodiments, the shapes of the plurality of pixel openings 300 in the first display area B1 and the second display area B2 are the same, and the shapes of the plurality of pixel openings 300 in the spliced ​​display area B3 are different from the shapes of the plurality of pixel openings 300 in the first display area B1. In other embodiments, refer to Figure 2 The shapes of multiple pixel openings 300 in the first display area B1 and the second display area B2 are the same, and the shapes of multiple pixel openings 300 in the spliced ​​display area B3 are the same as the shapes of multiple pixel openings 300 in the first display area B1. (Continue to refer to...) Figure 2 The pixel opening 300 is illustrated as a hexagon. In other embodiments, the shape of the pixel opening includes, but is not limited to, a rectangle, a square, and a circle.

[0095] The shape of the pixel opening 300 is the cross-sectional shape of the pixel opening 300 along the surface of the substrate 100.

[0096] In some embodiments, the multiple color filter layers 410 in the first display area B1 and the second display area B2 have the same shape, and the multiple color filter layers 410 in the spliced ​​display area B3 have a different shape than the multiple color filter layers 410 in the first display area B1. In other embodiments, refer to... Figure 3 The multiple color filter layers 410 in the first display area B1 and the second display area B2 have the same shape, and the multiple color filter layers 410 in the spliced ​​display area B3 have the same shape as the multiple color filter layers 410 in the first display area B1. (Continue to refer to...) Figure 3 The color filter layer 410 is illustrated as a hexagon. In other embodiments, the shape of the color filter layer includes, but is not limited to, a rectangle, a square, and a circle.

[0097] The shape of the color filter layer 410 is the cross-sectional shape of the color filter layer 410 along the surface of the substrate 100.

[0098] In some embodiments, the plurality of optical lens layers 420 in the first display area B1 and the second display area B2 have the same shape, and the plurality of optical lens layers 420 in the spliced ​​display area B3 have a different shape than the plurality of optical lens layers 420 in the first display area B1. In other embodiments, refer to Figure 4 The multiple optical lens layers 420 in the first display area B1 and the second display area B2 have the same shape, and the multiple optical lens layers 420 in the spliced ​​display area B3 have the same shape as the multiple optical lens layers 420 in the first display area B1. (Continue to refer to...) Figure 4 The optical lens layer 420 is illustrated as a circle. In other embodiments, the shape of the optical lens layer 420 may include other shapes.

[0099] The shape of the optical lens layer 420 is the cross-sectional shape of the optical lens layer 420 along the surface of the substrate 100. The cross-sectional shape of the optical lens layer 420 along the surface of the substrate 100 may include one of a spherical segment, an ellipsoidal segment, and an inclined ellipsoidal segment.

[0100] In some embodiments, reference Figures 5 to 10In the first display area B1 and the second display area B2, the optical cavities of the light-emitting units of the same color sub-pixel regions have the same cavity length, while the cavity length of the optical cavities of the light-emitting units of the same color sub-pixel regions in the spliced ​​display area B3 is different from that in the first display area B1. The cavity length of the optical cavities of the light-emitting units of the same color sub-pixel regions in the spliced ​​display area B3 is irregular and disordered compared to that in the first and second display areas B1 and B2, which visually enhances the smoothness of the brightness and color transition in the spliced ​​display area B3. In other embodiments, the optical cavities of the light-emitting units of the same color sub-pixel regions in the first and second display areas have the same cavity length, and the cavity length of the optical cavities of the light-emitting units of the same color sub-pixel regions in the spliced ​​display area is the same as that in the first display area.

[0101] The color of the light-emitting unit in the sub-pixel region is the same as the color of the display light emitted by the functional film layer.

[0102] The optical cavity of a light-emitting unit is composed of multiple functional film layers through which the light emitted from the light-emitting layer travels within the display panel. The light emitted from the light-emitting layer is transmitted within the optical cavity and finally emitted to the display side. Taking an organic light-emitting layer as an example, for a top-emitting display panel, the optical cavity of the light-emitting unit can be formed between the bottom anode and the top color filter layer. If the light-emitting unit includes an optical lens layer, the optical cavity of the light-emitting unit can be formed between the bottom anode and the top optical lens layer.

[0103] In some embodiments, the cavity lengths of the optical cavities of the light-emitting units of the same color sub-pixel regions in the first display area B1 and the second display area B2 are the same, and the cavity lengths of the optical cavities of the light-emitting units of the same color sub-pixel regions in the spliced ​​display area B3 are different from the cavity lengths of the optical cavities of the light-emitting units of the same color sub-pixel regions in the first display area B1 can be achieved by means of grayscale photolithography. Grayscale photolithography is common knowledge in the art and will not be described in detail here.

[0104] In some embodiments, the cavity lengths of the optical cavities corresponding to the light-emitting units of multiple sub-pixel regions of the same color within the splicing display area B3 may be the same or not completely identical. The cavity lengths of the optical cavities corresponding to the light-emitting units of multiple sub-pixel regions of the same color within the splicing display area B3 may not be completely identical; this could mean that the cavity lengths are partially the same and partially different, or that the cavity lengths are completely different. The irregular and disordered design of the cavity lengths of the optical cavities corresponding to the light-emitting units of multiple sub-pixel regions of the same color within the splicing display area B3 enhances the visual effect of improving the smooth transition of brightness and color in the splicing display area B3.

[0105] In some embodiments, the cavity length of the optical cavity of the light-emitting unit of multiple sub-pixel regions of the same color within the splicing display area B3 is a randomly selected value within a range between a third preset maximum value and a third preset minimum value; the difference between the third preset maximum value and the third preset minimum value is less than or equal to 0.1 μm, for example, 0 μm, 0.05 μm, or 0.1 μm. If the difference between the third preset maximum value and the third preset minimum value is too large, the splicing display area B3 is prone to visual unevenness, such as uneven brightness and color deviation. Therefore, a difference between the third preset maximum value and the third preset minimum value of less than or equal to 0.1 μm is more effective in visually improving the smooth transition of brightness and color in the splicing display area B3. It should be noted that the difference between the third preset maximum value and the third preset minimum value is not limited to this.

[0106] In some embodiments, reference Figure 5 The multiple functional film layers of the light-emitting unit include an OLED and an insulating layer 600 located between the OLED and the substrate 100. The thickness H13 of the insulating layer 600 of the same color sub-pixel area in the splicing display area B3 is different from the thickness H11 of the insulating layer 600 of the same color sub-pixel area in the first display area B1, so that the cavity length of the corresponding optical cavity of the sub-pixel area of ​​the same color in the splicing display area B3 is different from the cavity length of the corresponding optical cavity of the sub-pixel area of ​​the same color in the first display area B1. Figure 5 In the first display area B1, the thickness H11 of the insulating layer 600 of the sub-pixel region of the same color is the same as the thickness H12 of the insulating layer 600 of the sub-pixel region of the same color in the second display area B2. In other embodiments, the thickness of the insulating layer of the sub-pixel region of the same color in the spliced ​​display area is the same as the thickness of the insulating layer of the sub-pixel region of the same color in the first display area.

[0107] In some embodiments, the insulating layer 600 of multiple sub-pixel regions of the same color within the splicing display area B3 has the same thickness H13, so that the cavity length of the corresponding optical cavity of the multiple sub-pixel regions of the same color within the splicing display area B3 is the same; or, the insulating layer 600 of multiple sub-pixel regions of the same color within the splicing display area B3 has not the same thickness H13, so that the cavity length of the corresponding optical cavity of the multiple sub-pixel regions of the same color within the splicing display area B3 is not the same.

[0108] In some embodiments, the difference between a preset maximum value and a preset minimum value of the thickness H13 of the insulating layer 600 of multiple sub-pixel regions of the same color within the spliced ​​display area B3 is less than or equal to 0.1 μm, for example, 0 μm, 0.05 μm, or 0.1 μm. In other embodiments, the difference between the preset maximum value and the preset minimum value of the thickness of the insulating layer of multiple sub-pixel regions of the same color within the spliced ​​display area is not limited to this.

[0109] In some embodiments, reference Figure 6 The light-emitting unit has multiple functional film layers including an OLED and a reflective layer 700 located between the OLED and the substrate 100. The thickness H23 of the reflective layer 700 of the same color sub-pixel region in the splicing display area B3 is different from the thickness H21 of the reflective layer 700 of the same color sub-pixel region in the first display area B1, so that the cavity length of the corresponding optical cavity of the sub-pixel region of the same color in the splicing display area B3 is different from the cavity length of the corresponding optical cavity of the sub-pixel region of the same color in the first display area B1. Figure 6 In the first display area B1, the thickness H21 of the reflective layer 700 of the sub-pixel region of the same color is the same as the thickness H22 of the reflective layer 700 of the sub-pixel region of the same color in the second display area B2. In other embodiments, the thickness of the reflective layer of the sub-pixel region of the same color in the spliced ​​display area is the same as the thickness of the reflective layer of the sub-pixel region of the same color in the first display area.

[0110] In some embodiments, the reflective layer 700 of multiple sub-pixel regions of the same color within the splicing display area B3 has the same thickness H23, so that the cavity length of the corresponding optical cavity of the multiple sub-pixel regions of the same color within the splicing display area B3 is the same; or, the reflective layer 700 of multiple sub-pixel regions of the same color within the splicing display area B3 has not the same thickness H23, so that the cavity length of the corresponding optical cavity of the multiple sub-pixel regions of the same color within the splicing display area B3 is not the same.

[0111] In some embodiments, the difference between the preset maximum and preset minimum values ​​of the thickness H23 of the reflective layer 700 of multiple sub-pixel regions of the same color within the spliced ​​display area B3 is less than or equal to 0.1 μm, for example, 0 μm, 0.05 μm, or 0.1 μm. In other embodiments, the difference between the preset maximum and preset minimum values ​​of the thickness of the reflective layer of multiple sub-pixel regions of the same color within the spliced ​​display area is not limited to this.

[0112] In some embodiments, reference Figure 7 The multiple functional film layers of the light-emitting unit include an OLED, a reflective layer 700 located between the OLED and the substrate, and a pad layer 800 located between the OLED and the reflective layer 700. The thickness H33 of the pad layer 800 of the same color sub-pixel area in the splicing display area B3 is different from the thickness H31 of the pad layer 800 of the same color sub-pixel area in the first display area B1, so that the cavity length of the corresponding optical cavity of the sub-pixel area of ​​the same color in the splicing display area B3 is different from the cavity length of the corresponding optical cavity of the sub-pixel area of ​​the same color in the first display area B1. Figure 7 In the first display area B1, the thickness H31 of the padding layer 800 for the sub-pixel region of the same color is the same as the thickness H32 of the padding layer 800 for the sub-pixel region of the same color in the second display area B2. In other embodiments, the thickness of the padding layer for the sub-pixel region of the same color in the spliced ​​display area is the same as the thickness of the padding layer for the sub-pixel region of the same color in the first display area.

[0113] In some embodiments, the thickness H33 of the pads 800 of multiple sub-pixel regions of the same color within the splicing display area B3 is the same, so that the cavity lengths of the corresponding optical cavities of the multiple sub-pixel regions of the same color within the splicing display area B3 are the same; or, the thickness H33 of the pads 800 of multiple sub-pixel regions of the same color within the splicing display area B3 is not completely the same, so that the cavity lengths of the corresponding optical cavities of the multiple sub-pixel regions of the same color within the splicing display area B3 are not completely the same.

[0114] In some embodiments, the difference between the preset maximum and preset minimum values ​​of the thickness H23 of the padding layer 800 of multiple sub-pixel regions of the same color within the splicing display area B3 is less than or equal to 0.1 μm, for example, 0 μm, 0.05 μm, or 0.1 μm. In other embodiments, the difference between the preset maximum and preset minimum values ​​of the thickness of the padding layer of multiple sub-pixel regions of the same color within the splicing display area is not limited to this.

[0115] In some embodiments, reference Figure 8The light-emitting unit has multiple functional film layers including an OLED. The OLED includes an anode 500a, a cathode 500c, and an organic light-emitting layer 500b located between the anode 500a and the cathode 500c. The thickness H43 of the anode 500a of the same color sub-pixel region in the splicing display area B3 is different from the thickness H41 of the anode 500a of the same color sub-pixel region in the first display area B1, so that the cavity length of the corresponding optical cavity of the sub-pixel region of the same color in the splicing display area B3 is different from the cavity length of the corresponding optical cavity of the sub-pixel region of the same color in the first display area B1. Figure 8 In the first display area B1, the thickness H41 of the anode 500a of the sub-pixel region of the same color is the same as the thickness H42 of the anode 500a of the sub-pixel region of the same color in the second display area B2. In other embodiments, the thickness of the anode of the sub-pixel region of the same color in the spliced ​​display area is the same as the thickness of the anode of the sub-pixel region of the same color in the first display area.

[0116] In some embodiments, the thickness H43 of the anode 500a of multiple sub-pixel regions of the same color within the splicing display area B3 is the same, so that the cavity length of the corresponding optical cavity of the multiple sub-pixel regions of the same color within the splicing display area B3 is the same; or, the thickness H43 of the anode 500a of multiple sub-pixel regions of the same color within the splicing display area B3 is not completely the same, so that the cavity length of the corresponding optical cavity of the multiple sub-pixel regions of the same color within the splicing display area B3 is not completely the same.

[0117] In some embodiments, the difference between the preset maximum and preset minimum values ​​of the thickness H43 of the anode 500a of multiple sub-pixel regions of the same color within the splicing display area B3 is less than or equal to 0.1 μm, for example, 0 μm, 0.05 μm, or 0.1 μm. In other embodiments, the difference between the preset maximum and preset minimum values ​​of the thickness of the anode of multiple sub-pixel regions of the same color within the splicing display area is not limited to this.

[0118] In some embodiments, reference Figure 9 In the case where the multiple functional film layers of the light-emitting unit include a color filter layer 410, the thickness H53 of the color filter layer 410 of the same color sub-pixel area in the spliced ​​display area B3 is different from the thickness of the color filter layer 410 of the same color sub-pixel area in the first display area B1, so that the cavity length of the corresponding optical cavity of the sub-pixel area of ​​the same color is different from the cavity length of the corresponding optical cavity of the sub-pixel area of ​​the same color in the first display area. Figure 9In the first display area B1, the thickness H51 of the color filter layer 410 for the sub-pixel region of that color is the same as the thickness H52 of the color filter layer 410 for the sub-pixel region of that color in the second display area B2. In other embodiments, the thickness of the color filter layer for the sub-pixel region of the same color in the spliced ​​display area is the same as the thickness of the color filter layer for the sub-pixel region of that color in the first display area.

[0119] In some embodiments, the thickness H53 of the color filter layer 410 of multiple sub-pixel regions of the same color within the splicing display area B3 is the same, so that the cavity length of the corresponding optical cavity of the multiple sub-pixel regions of the same color within the splicing display area B3 is the same; or, the thickness H53 of the color filter layer 410 of multiple sub-pixel regions of the same color within the splicing display area B3 is not completely the same, so that the cavity length of the corresponding optical cavity of the multiple sub-pixel regions of the same color within the splicing display area B3 is not completely the same.

[0120] In some embodiments, the difference between a preset maximum value and a preset minimum value of the thickness H53 of the color filter layer 410 of multiple sub-pixel regions of the same color within the spliced ​​display area B3 is less than or equal to 0.1 μm, for example, 0 μm, 0.05 μm, or 0.1 μm. In other embodiments, the difference between the preset maximum value and the preset minimum value of the thickness of the color filter layer of multiple sub-pixel regions of the same color within the spliced ​​display area is not limited to this.

[0121] In some embodiments, reference Figure 10 In the case where the multiple functional film layers of the light-emitting unit include an optical lens layer 420, the thickness H63 of the optical lens layer 420 of the same color sub-pixel region in the spliced ​​display area B3 is different from the thickness H61 of the optical lens layer 420 of the same color sub-pixel region in the first display area B1, so that the cavity length of the corresponding optical cavity of the sub-pixel region of the same color is different from the cavity length of the corresponding optical cavity of the sub-pixel region of the same color in the first display area B1. Figure 10 In the first display area B1, the thickness H61 of the optical lens layer 420 for the sub-pixel region of the same color is the same as the thickness H62 of the optical lens layer 420 for the sub-pixel region of the same color in the second display area B2. In other embodiments, the thickness of the optical lens layer for the sub-pixel region of the same color in the spliced ​​display area is the same as the thickness of the optical lens layer for the sub-pixel region of the same color in the first display area.

[0122] In some embodiments, the thickness H63 of the optical lens layer 420 of multiple sub-pixel regions of the same color within the splicing display area B3 is the same, so that the cavity length of the corresponding optical cavity of the multiple sub-pixel regions of the same color within the splicing display area B3 is the same; or, the thickness H63 of the optical lens layer 420 of multiple sub-pixel regions of the same color within the splicing display area B3 is not completely the same, so that the cavity length of the corresponding optical cavity of the multiple sub-pixel regions of the same color within the splicing display area B3 is not completely the same.

[0123] In some embodiments, the difference between a preset maximum value and a preset minimum value of the thickness H63 of the optical lens layer 420 of multiple sub-pixel regions of the same color within the spliced ​​display area B3 is less than or equal to 0.1 μm, for example, 0 μm, 0.05 μm, or 0.1 μm. In other embodiments, the difference between the preset maximum value and the preset minimum value of the thickness of the optical lens layer of multiple sub-pixel regions of the same color within the spliced ​​display area is not limited to this.

[0124] In some embodiments, the optical cavity may be defined by a reflective layer 700, a pad layer 800, an anode 500a, an organic light-emitting layer 500b, a cathode 500c, a color filter layer 410, and an optical lens layer 420, or it may be defined by a reflective layer 700, a pad layer 800, an anode 500a, an organic light-emitting layer 500b, and a cathode 500c. The light beam generated by the organic light-emitting layer 500b can be continuously reflected, producing strong multi-beam interference, which strengthens the display light emitted by the display panel and improves the luminous efficiency of the display panel. Specifically, the organic light-emitting layer 500b emits light beams in multiple directions. The light beams emitted by the organic light-emitting layer 500b pass through the pad layer 800 to reach the surface of the reflective layer 700 and are reflected towards the cathode. The light beams emitted by the organic light-emitting layer 500b and the reflected light are superimposed, thereby improving the luminous efficiency of the display panel.

[0125] In some embodiments, the display panel further includes: a first encapsulation layer 900a located between the cathode 500c and the color filter layer 410; and a second encapsulation layer 900b located between the color filter layer 410 and the optical lens layer 420.

[0126] In some embodiments, the first encapsulation layer 900a includes a first sub-inorganic encapsulation layer, an organic encapsulation layer, and a second sub-inorganic encapsulation layer stacked together; the first sub-inorganic encapsulation layer is located between the cathode 500c and the organic encapsulation layer, and the second sub-inorganic encapsulation layer is located between the organic encapsulation layer and the color filter layer 410.

[0127] In some embodiments, the display panel further includes: an optical adhesive layer 110 covering the surface of the optical lens layer 420 away from the substrate 100; and a cover plate 120 located on the surface of the optical adhesive layer 110 away from the substrate 100.

[0128] Another embodiment of the present invention provides a display device, including the display panel of the above embodiment.

[0129] The display device can be, for example, a display module, various displays, vehicle display terminals, mobile phones, tablets, laptops, or any other product or component with display functionality. Other essential components of this display device are those that should be understood by those skilled in the art and will not be described in detail here, nor should they be construed as limiting the invention.

[0130] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A display panel, characterized in that, include: A substrate, wherein the substrate includes a plurality of display areas, the plurality of display areas including an adjacent first display area and a second display area, and a splicing display area located between the first display area and the second display area; A pixel defining layer is located on the substrate, the pixel defining layer having a plurality of spaced pixel openings, the pixel openings defining a plurality of sub-pixel regions in the display area on the substrate; The sub-pixel region includes: A light-emitting unit, the light-emitting unit comprising multiple functional film layers, the multiple functional film layers being used to emit display light; The pixel openings in the splicing display area include a first type of pixel opening and a second type of pixel opening, and a first splicing line is formed between the first type of pixel opening and the second type of pixel opening. The first splicing line is formed by the pixel defining layer. Furthermore, the plurality of functional film layers include target functional film layers, and the target functional film layers in the splicing display area include a first type of target functional film layer and a second type of target functional film layer. A second splicing line is provided between the first type of target functional film layer and the second type of target functional film layer. The orthographic projection of the first splicing line on the substrate and the orthographic projection of the second splicing line on the substrate do not overlap at least partially.

2. The display panel according to claim 1, characterized in that, The first type of pixel opening and the pixel opening of the first display area are manufactured in one process, the second type of pixel opening and the pixel opening of the second display area are manufactured in one process, and the pixel opening of the first display area and the pixel opening of the second display area are manufactured in different processes; The first type of target functional film layer and the target functional film layer of the first display area are produced by a single process, the second type of target functional film layer and the target functional film layer of the second display area are produced by a single process, and the target functional film layer of the first display area and the target functional film layer of the second display area are produced by different processes.

3. The display panel according to claim 1, characterized in that, The target functional layer includes a color filter layer, which comprises a first type of color filter layer and a second type of color filter layer located within the splicing display area. The second splicing line includes a first sub-splicing line formed by the gap between the first type of color filter layer and the second type of color filter layer, and / or, The target functional layer includes an optical lens layer, which includes a first type of optical lens layer and a second type of optical lens layer located within the splicing display area. The second splicing line includes a second sub-splicing line formed by the gap between the first type of optical lens layer and the second type of optical lens layer. The orthographic projection of the first sub-splicing line formed by the color filter layer on the substrate and the orthographic projection of the second sub-splicing line formed by the optical lens layer on the substrate completely overlap or at least partially do not overlap.

4. The display panel according to claim 3, characterized in that, When the target functional layer includes the color filter layer and the optical lens layer, at least two or three of the orthographic projections of the first splicing line on the substrate, the orthographic projections of the first sub-splicing line on the substrate, and the orthographic projections of the second sub-splicing line on the substrate do not overlap.

5. The display panel according to claim 1, characterized in that, The spacing between two adjacent sub-pixel regions in the first display area is the same as the spacing between two adjacent sub-pixel regions in the second display area, and the spacing between two adjacent sub-pixel regions in the spliced ​​display area is different from the spacing between two adjacent sub-pixel regions in the first display area.

6. The display panel according to claim 5, characterized in that, The spacing between any two adjacent sub-pixel regions within the spliced ​​display area may be the same or not exactly the same.

7. The display panel according to claim 1, characterized in that, The areas of the sub-pixel regions of the same color in the first display area and the second display area are the same, and the areas of the sub-pixel regions of the same color in the spliced ​​display area are different from the areas of the sub-pixel regions of the same color in the first display area.

8. The display panel according to claim 7, characterized in that, The areas of multiple sub-pixel regions of the same color within the spliced ​​display area may be the same or not completely the same.

9. The display panel according to claim 1, characterized in that, The shapes of the multiple sub-pixel regions in the first display area and the second display area are the same, and the shapes of the multiple sub-pixel regions in the spliced ​​display area are different from the shapes of the multiple sub-pixel regions in the first display area.

10. The display panel according to any one of claims 1-9, characterized in that, The optical cavity lengths of the light-emitting units of the same color sub-pixel regions in the first display area and the second display area are the same, and the cavity lengths of the optical cavities of the light-emitting units of the same color sub-pixel regions in the spliced ​​display area are different from the cavity lengths of the optical cavities of the light-emitting units of the same color sub-pixel regions in the first display area.

11. The display panel according to claim 10, characterized in that, The cavity lengths of the corresponding optical cavities of the light-emitting units in multiple sub-pixel regions of the same color within the splicing display area may be the same or not completely the same.

12. The display panel according to claim 10, characterized in that, The multiple functional film layers of the light-emitting unit include an OLED and an insulating layer located between the OLED and the substrate. The thickness of the insulating layer of the sub-pixel region of the same color in the splicing display area is different from the thickness of the insulating layer of the sub-pixel region of the same color in the first display area, so that the cavity length of the optical cavity corresponding to the sub-pixel region of the same color in the splicing display area is different from the cavity length of the optical cavity corresponding to the sub-pixel region of the same color in the first display area.

13. The display panel according to claim 10, characterized in that, The multiple functional film layers of the light-emitting unit include an OLED and a reflective layer located between the OLED and the substrate. The thickness of the reflective layer of the sub-pixel region of the same color in the spliced ​​display area is different from the thickness of the reflective layer of the sub-pixel region of the same color in the first display area, so that the cavity length of the optical cavity corresponding to the sub-pixel region of the same color in the spliced ​​display area is different from the cavity length of the optical cavity corresponding to the sub-pixel region of the same color in the first display area.

14. The display panel according to claim 10, characterized in that, The multiple functional film layers of the light-emitting unit include an OLED, a reflective layer located between the OLED and the substrate, and a pad layer located between the OLED and the reflective layer; The thickness of the padding layer in the sub-pixel region of the same color in the spliced ​​display area is different from the thickness of the padding layer in the sub-pixel region of the same color in the first display area, so that the cavity length of the optical cavity corresponding to the sub-pixel region of the same color in the spliced ​​display area is different from the cavity length of the optical cavity corresponding to the sub-pixel region of the same color in the first display area.

15. The display panel according to claim 10, characterized in that, The multiple functional film layers of the light-emitting unit include an OLED, the OLED including an anode, a cathode, and an organic light-emitting layer located between the anode and the cathode; The thickness of the anode of the sub-pixel region of the same color in the spliced ​​display area is different from the thickness of the anode of the sub-pixel region of the same color in the first display area, so that the cavity length of the corresponding optical cavity of the sub-pixel region of the same color in the spliced ​​display area is different from the cavity length of the corresponding optical cavity of the sub-pixel region of the same color in the first display area.

16. The display panel according to claim 10, characterized in that, When the multiple functional film layers of the light-emitting unit include a color filter layer, the thickness of the color filter layer of the sub-pixel region of the same color in the spliced ​​display area is different from the thickness of the color filter layer of the sub-pixel region of the same color in the first display area, so that the cavity length of the optical cavity corresponding to the sub-pixel region of the same color is different from the cavity length of the optical cavity corresponding to the sub-pixel region of the same color in the first display area.

17. The display panel according to claim 10, characterized in that, When the multiple functional film layers of the light-emitting unit include optical lens layers, the thickness of the optical lens layer of the sub-pixel region of the same color in the spliced ​​display area is different from the thickness of the optical lens layer of the sub-pixel region of the same color in the first display area, so that the cavity length of the corresponding optical cavity of the sub-pixel region of the same color is different from the cavity length of the corresponding optical cavity of the sub-pixel region of the same color in the first display area.

18. A display device, characterized in that, The display panel includes any one of claims 1 to 17.

Images