Display panel and display apparatus

Abstract

A display panel, comprising a plurality of light-emitting devices and an adjustment functional layer located on a light-emergent side of the plurality of light-emitting devices, wherein each light-emitting device has a light-emitting portion configured to emit light; the adjustment functional layer is configured to converge the light emitted from the light-emitting portions and then emit same; the light-emitting devices include first light-emitting devices and second light-emitting devices, which emit light of different colors, respectively; the area of the orthographic projection of the light-emitting portion of each first light-emitting device on the adjustment functional layer is less than the area of the orthographic projection of the light-emitting portion of each second light-emitting device on the adjustment functional layer; each first light-emitting device further has an adjustment portion, and the orthographic projection of the light-emitting portion of each first light-emitting device on the adjustment functional layer surrounds the orthographic projection of the adjustment portion on the adjustment functional layer; and the adjustment portion does not emit light.

Description

Display panel and display device

[0001] This application claims priority to the Chinese patent application No. 202411233461.3, filed on September 3, 2024, the entire content of which is incorporated herein by reference. TECHNICAL FIELD

[0002] The present disclosure relates to the technical field of display, and in particular, to a display panel and a display device. BACKGROUND

[0003] Organic light emitting diode (OLED) display technology is a technology that uses light emitting materials to emit light under the drive of current to realize display. OLED display devices have the advantages of ultra-light, ultra-thin, high brightness, large viewing angle, low voltage, low power consumption, fast response, high definition, shock resistance, bendable, low cost, simple process, less use of raw materials, high luminous efficiency, and wide temperature range. SUMMARY

[0004] In one aspect, a display panel is provided, comprising a plurality of light emitting devices and an adjustment functional layer located on the light emitting side of the plurality of light emitting devices. The plurality of light emitting devices have light emitting parts for emitting light. The adjustment functional layer is used to converge and emit the light emitted by each light emitting part. The light emitting devices include first light emitting devices and second light emitting devices that respectively emit light of different colors. The area of the orthographic projection of the light emitting part of the first light emitting device on the adjustment functional layer is smaller than the area of the orthographic projection of the light emitting part of the second light emitting device on the adjustment functional layer. The first light emitting device further has an adjustment part, and the orthographic projection of the light emitting part of the first light emitting device on the adjustment functional layer surrounds the orthographic projection of the adjustment part on the adjustment functional layer. The adjustment part does not emit light.

[0005] In some embodiments, in the same first light emitting device, the shape of the outer contour of the orthographic projection of the light emitting part on the adjustment functional layer is the same as the shape of the outer contour of the orthographic projection of the adjustment part on the adjustment functional layer.

[0006] In some embodiments, the orthographic projection of the adjustment part on the adjustment functional layer is a central symmetric shape.

[0007] In some embodiments, the orthographic projection of the adjustment part on the adjustment functional layer is a square or a circle.

[0008] In some embodiments, the center of the orthographic projection of the adjustment part on the adjustment functional layer coincides with the center of the orthographic projection of the light emitting part on the adjustment functional layer.

[0009] In some embodiments, the display panel comprises a substrate, a planar layer, and a functional layer. The plurality of light emitting devices is located between the planar layer and the functional layer. The planar layer has a plurality of recesses extending along a thickness direction thereof. The adjusting portion is located in the recess, the light emitting portion is located on a side of the planar layer away from the substrate, and a distance between the adjusting portion and the substrate is less than a distance between the light emitting portion and the substrate.

[0010] In some embodiments, a depth of the recess is greater than or equal to a thickness of the adjusting portion.

[0011] In some embodiments, the light emitting device comprises a first electrode, a light emitting layer, and a second electrode which are sequentially stacked on the planar layer. The first electrode of the first light emitting device comprises a first sub-portion and a second sub-portion which are disconnected. The first sub-portion is located in the recess and constitutes a part of the adjusting portion. The second sub-portion is located outside the recess and constitutes a part of the light emitting portion.

[0012] In some embodiments, the display panel further comprises a boundary layer. The boundary layer is located between the planar layer and the functional layer. The boundary layer comprises a plurality of first openings and a plurality of second openings. The recess communicates with the first opening, and a projection of the recess on the substrate is located within a projection range of the first opening on the substrate. A part of the first light emitting device is located in the first opening and the corresponding recess. A part of the second light emitting device is located in the second opening. The functional layer comprises a light shielding layer and a plurality of color filters. The light shielding layer comprises a plurality of third openings, and the color filters are located at least in the third openings. A projection of one of the first openings on the substrate is located within a projection range of one of the third openings on the substrate.

[0013] In some embodiments, the first light emitting device includes a third light emitting device and a fourth light emitting device emitting light rays of different colors. The display panel includes a main display area and a sub-display area. The pixel density of the sub-display area is less than the pixel density of the main display area. The second light emitting device, the third light emitting device, and the fourth light emitting device are located in the sub-display area. The light emitting device further includes a fifth light emitting device, a sixth light emitting device, and a seventh light emitting device located in the main display area. The color of the light rays emitted by the second light emitting device is the same as the color of the light rays emitted by the sixth light emitting device, the color of the light rays emitted by the third light emitting device is the same as the color of the light rays emitted by the fifth light emitting device, and the color of the light rays emitted by the fourth light emitting device is the same as the color of the light rays emitted by the seventh light emitting device. The plurality of light emitting devices in the sub-display area includes a plurality of first light emitting device groups. The first light emitting device group includes at least one second light emitting device, at least one third light emitting device, and at least one fourth light emitting device adjacent to each other. The plurality of light emitting devices in the main display area includes a plurality of second light emitting device groups. The second light emitting device group includes at least one fifth light emitting device, at least one sixth light emitting device, and at least one seventh light emitting device adjacent to each other. The ratio of the sum of the areas of the orthographic projections of the light emitting portions of each third light emitting device in the same first light emitting device group on the adjustment functional layer, the sum of the areas of the orthographic projections of the light emitting portions of each second light emitting device on the adjustment functional layer, and the sum of the areas of the orthographic projections of the light emitting portions of each fourth light emitting device on the adjustment functional layer is equal to the ratio of the sum of the areas of the orthographic projections of the light emitting portions of each fifth light emitting device in the same second light emitting device group on the adjustment functional layer, the sum of the areas of the orthographic projections of the light emitting portions of each sixth light emitting device on the adjustment functional layer, and the sum of the areas of the orthographic projections of the light emitting portions of each seventh light emitting device on the adjustment functional layer.

[0014] In some embodiments, the arrangement density of the plurality of light emitting devices in the first light emitting device group is less than or equal to the arrangement density of the plurality of light emitting devices in the second light emitting device group.

[0015] In some embodiments, the area of the light emitting portion of the third light emitting device is equal to the area of the adjustment portion. The area of the light emitting portion of the fourth light emitting device is equal to the area of the adjustment portion.

[0016] In some embodiments, the ratio of the sum of the areas of the orthographic projections of the light emitting portions of each third light emitting device in the same first light emitting device group on the adjustment functional layer, the sum of the areas of the orthographic projections of the light emitting portions of each second light emitting device on the adjustment functional layer, and the sum of the areas of the orthographic projections of the light emitting portions of each fourth light emitting device on the adjustment functional layer is 1:2:1.8.

[0017] In some embodiments, the first plurality of openings comprises a first plurality of sub-openings and a second plurality of sub-openings. A portion of the third light emitting device is located within a first sub-opening, and a portion of the fourth light emitting device is located within a second sub-opening. The ratio of the sum of the areas of the first sub-openings corresponding to each of the third light emitting devices, the sum of the areas of the second openings corresponding to each of the second light emitting devices, and the sum of the areas of the second sub-openings directly opposite to each of the fourth light emitting devices in the same first light emitting device group is 1:1:1.8.

[0018] In some embodiments, the first light emitting device group comprises one second light emitting device, one third light emitting device, and one fourth light emitting device. The line connecting the center of the one second light emitting device, the center of the one third light emitting device, and the center of the one fourth light emitting device forms a triangle. The second light emitting device group comprises one fifth light emitting device, two sixth light emitting devices, and one seventh light emitting device. The line connecting the center of the one fifth light emitting device and the center of the one seventh light emitting device intersects the line connecting the centers of the two sixth light emitting devices.

[0019] In some embodiments, the area of the orthographic projection of the light emitting portion of the third light emitting device on the adjustment functional layer is equal to the area of the orthographic projection of the light emitting portion of the fifth light emitting device on the adjustment functional layer. The area of the orthographic projection of the light emitting portion of the fourth light emitting device on the adjustment functional layer is equal to the area of the orthographic projection of the light emitting portion of the seventh light emitting device on the adjustment functional layer. The area of the orthographic projection of the light emitting portion of the second light emitting device on the adjustment functional layer is twice the area of the orthographic projection of the light emitting portion of the sixth light emitting device on the adjustment functional layer.

[0020] In some embodiments, the second light emitting device emits green light, the third light emitting device emits red light, and the fourth light emitting device emits blue light.

[0021] In some embodiments, the first light emitting device includes a third light emitting device and a fourth light emitting device emitting light of different colors. The plurality of light emitting devices includes a plurality of third light emitting device groups. The third light emitting device group includes at least one second light emitting device, at least one third light emitting device, and at least one fourth light emitting device. The display panel further includes a boundary layer. The boundary layer is located between the planar layer and the adjustment functional layer. The boundary layer includes a plurality of first openings and a plurality of second openings. The recess communicates with the first opening, and the orthogonal projection of the recess on the substrate is located within the orthogonal projection range of the first opening on the substrate. The first opening includes a first sub-opening and a second sub-opening. A portion of the third light emitting device is located in the first sub-opening, and a portion of the fourth light emitting device is located in the second sub-opening. A portion of the second light emitting device is located in the second opening. In the same third light emitting device group, the ratio of the sum of the areas of the first sub-opening corresponding to each third light emitting device, the sum of the areas of the second opening corresponding to each second light emitting device, and the sum of the areas of the second sub-opening directly opposite to each fourth light emitting device is 1:1:1.

[0022] In some embodiments, in the same third light emitting device group, the ratio of the sum of the areas of the light emitting part of the at least one third light emitting device on the adjustment functional layer, the sum of the areas of the light emitting part of the at least one fourth light emitting device on the adjustment functional layer, and the sum of the areas of the light emitting part of the at least one second light emitting device on the adjustment functional layer is 1:1:1.8.

[0023] In some embodiments, the third light emitting device group includes one first light emitting device, one third light emitting device, and one second light emitting device. The line between the center of the one second light emitting device, the center of the one third light emitting device, and the center of the one fourth light emitting device forms a triangle.

[0024] In some embodiments, the adjustment functional layer includes a first light adjusting layer and a second light adjusting layer arranged in a stack. The refractive index of the first light adjusting layer is smaller than the refractive index of the second light adjusting layer. The first light adjusting layer includes a plurality of fourth openings, and the side wall of the fourth opening forms an acute angle with the plane where the planar layer is located. A portion of the second light adjusting layer is located in the fourth opening, and another portion of the second light adjusting layer is located on the side of the first light adjusting layer away from the planar layer. The orthogonal projection of the first opening on the planar layer is located within the orthogonal projection range of the fourth opening on the planar layer.

[0025] In some embodiments, the adjusting functional layer comprises a first light adjusting layer and a second light adjusting layer arranged in a stack. The first light adjusting layer has a refractive index greater than that of the second light adjusting layer. The first light adjusting layer comprises a plurality of first light adjusting portions arranged at intervals, a side wall of the first light adjusting portion forms an acute angle with a plane on which the flat layer is located, and the second light adjusting layer covers the plurality of first light adjusting portions. A projection of the first opening on the flat layer is located within a projection range of the first light adjusting portion on the flat layer.

[0026] In some embodiments, the adjusting functional layer further comprises a color film layer arranged between the plurality of light emitting devices and the first light adjusting layer. The color film layer comprises an optical shielding layer and a plurality of color films arranged at intervals. The optical shielding layer comprises a plurality of third openings, and the color film is located at least within the third opening. A projection of the first opening on the flat layer is located within a projection range of the third opening on the flat layer.

[0027] In some embodiments, the adjusting functional layer comprises a third light adjusting layer and a color film layer arranged in a stack. The third light adjusting layer comprises a plurality of third light adjusting portions arranged at intervals. A side wall of the third light adjusting portion forms an acute angle with a plane on which the flat layer is located. The color film layer comprises an optical shielding layer and a plurality of color films arranged at intervals. The optical shielding layer comprises a plurality of third openings, the third light adjusting portion is located within the third opening, and a gap exists between a side wall of the third light adjusting portion and a side wall of the third opening. The color film is located at least within the gap and on a side of the third light adjusting portion away from the substrate. A projection of the first opening on the flat layer is located within a projection range of the third opening on the flat layer and within a projection range of the third light adjusting portion on the flat layer. The color film has a refractive index less than that of the third light adjusting portion.

[0028] In some embodiments, the second light emitting device emits blue light, the third light emitting device emits red light, and the fourth light emitting device emits green light.

[0029] In another aspect, a display device is provided, comprising the display panel according to any one of the above embodiments, and an optical element located on a non-light-emitting side of a sub-display area of the display panel. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the present disclosure, the following will briefly introduce the drawings needed to be used in some embodiments of the present disclosure. Obviously, the drawings in the following description are only the drawings of some embodiments of the present disclosure, and other drawings can also be obtained by those skilled in the art according to these drawings. In addition, the drawings in the following description can be regarded as schematic diagrams, and are not limited to the actual size of the products involved in the embodiments of the present disclosure.

[0031] FIG. 1 is a structural diagram of a display device according to some embodiments of the present disclosure;

[0032] FIG. 2 is a structural diagram of another display device according to some embodiments of the present disclosure;

[0033] FIG. 3 is a structural diagram of yet another display device according to some embodiments of the present disclosure;

[0034] FIG. 4 is a structural diagram of yet another display device according to some embodiments of the present disclosure;

[0035] FIG. 5 is a structural diagram of a display panel according to an implementation;

[0036] FIG. 6 is a structural diagram of yet another display device according to some embodiments of the present disclosure;

[0037] FIG. 7 is a structural diagram of a display panel according to some embodiments of the present disclosure;

[0038] FIG. 8 is a partial enlarged structural diagram of a CC’ region in FIG. 7;

[0039] FIG. 9 is a structural diagram of a plurality of light emitting devices according to some embodiments of the present disclosure;

[0040] FIG. 10 is another structural diagram of a plurality of light emitting devices according to some embodiments of the present disclosure;

[0041] FIG. 11 is another structural diagram of a plurality of light emitting devices according to some embodiments of the present disclosure;

[0042] FIG. 12 is a structural diagram of yet another display device according to some embodiments of the present disclosure;

[0043] FIG. 13 is a structural diagram of yet another display panel according to some embodiments of the present disclosure;

[0044] FIG. 14 is a structural diagram of yet another display device according to some embodiments of the present disclosure;

[0045] FIG. 15 is another structural diagram of a plurality of light emitting devices according to some embodiments of the present disclosure;

[0046] FIG. 16 is another structural diagram of a plurality of light emitting devices according to some embodiments of the present disclosure;

[0047] FIG. 17 is another structural diagram of a plurality of light emitting devices according to some embodiments of the present disclosure;

[0048] FIG. 18 is another structural diagram of a plurality of light emitting devices according to some embodiments of the present disclosure;

[0049] FIG. 19 is a structure diagram of a plurality of light emitting devices according to another implementation;

[0050] FIG. 20 is another structure diagram of a plurality of light emitting devices according to yet another implementation;

[0051] FIG. 21 is a chromaticity diagram of a main display area, a first sub-display area, and a second sub-display area in some embodiments of the present disclosure;

[0052] FIG. 22 is yet another structure diagram of a plurality of light emitting devices in some embodiments of the present disclosure;

[0053] FIG. 23 is a structure diagram of yet another display device in some embodiments of the present disclosure;

[0054] FIG. 24 is a structure diagram of yet another display device in some embodiments of the present disclosure;

[0055] FIG. 25 is a structure diagram of yet another display device in some embodiments of the present disclosure;

[0056] FIG. 26 is a structure diagram of yet another display device in some embodiments of the present disclosure;

[0057] FIG. 27 is a structure diagram of yet another display device in some embodiments of the present disclosure. DETAILED DESCRIPTION

[0058] The technical solutions in some embodiments of the present disclosure will be described clearly and completely below with reference to the drawings. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, rather than all the embodiments. Based on the embodiments provided by the present disclosure, all other embodiments obtained by those skilled in the art belong to the scope of protection of the present disclosure.

[0059] Unless the context otherwise requires, throughout the specification and claims, the term "comprise" and its other forms, such as the third-person singular "comprises" and the present participle "comprising," are interpreted as open-ended and encompassing, meaning "including, but not limited to." In the description of the specification, terms such as "one embodiment," "some embodiments," "exemplary embodiments," "example," "specific example," or "some examples," etc., are intended to indicate that a particular feature, structure, material, or characteristic associated with that embodiment or example is included in at least one embodiment or example of this disclosure. The illustrative representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics mentioned may be included in any suitable manner in any one or more embodiments or examples.

[0060] Hereinafter, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this disclosure, unless otherwise stated, "a plurality of" means two or more.

[0061] "A and / or B" includes the following three combinations: A only, B only, and a combination of A and B.

[0062] As used herein, “about,” “approximately,” or “approximately” includes the stated value and the average value within an acceptable range of deviation from the given value, wherein the acceptable range of deviation is determined by a person skilled in the art taking into account the measurement under discussion and the error associated with the measurement of the given quantity (i.e., the limitations of the measurement system).

[0063] As used herein, "perpendicular," "equal" includes the recited condition as well as conditions that approximate the recited condition, the approximation being within an acceptable deviation range, as determined by one of ordinary skill in the art taking into account the measurement being discussed and the error associated with the measurement of the particular quantity (i.e., the limitations of the measurement system). For example, "perpendicular" includes absolute perpendicular and near-perpendicular, where near-perpendicular can be within an acceptable deviation range of, for example, 5°. "Equal" includes absolute equality and near-equality, where near-equality can be within an acceptable deviation range of, for example, a difference between the two that is less than or equal to 5% of either.

[0064] It will be understood that when a layer or element is referred to as being "on" another layer or substrate, it can be directly on the other layer or substrate, or intervening layers can also be present.

[0065] Exemplary embodiments are described herein with reference to cross-sectional and / or plan view illustrations that are idealized examples. In the interest of clarity, not all of the scale of the layers and regions can be shown in the drawings, which can distort the representation of the actual sizes of the layers and regions. Thus, the exemplary embodiments should not be construed as limited to the precise shapes and dimensions illustrated in the drawings. In particular, the exemplary embodiments are not intended to be limited to the precise shapes and dimensions illustrated in the drawings, and it is contemplated that shapes and dimensions can vary from those shown in the drawings. For example, etched regions that are shown as rectangular will typically have curved features. Thus, the regions illustrated in the drawings are schematic and not intended to be precise representations of the regions of the devices. The regions shown in the drawings are not intended to be limiting to the scope of the exemplary embodiments.

[0066] As shown in FIG. 1, some embodiments of the present disclosure provide a display device 1000. The display device 1000 can be any display device 1000 that displays whether in motion (e.g., video) or stationary (e.g., still images) and whether textual or graphical. More specifically, it is contemplated that the display device 1000 of the described embodiments can be implemented in or associated with a variety of electronic devices such as, but not limited to, mobile telephones, wireless devices, personal data assistants (PDAs), handheld or portable computers, GPS receivers / navigators, cameras, MP4 players, camcorders, game consoles, wrist watches, clocks, calculators, television monitors, flat-panel displays, computer monitors, auto displays (e.g., odometer display, etc.), cockpit controls and / or displays, camera view displays (e.g., display of a rear view camera in a vehicle), electronic photographs, electronic billboards or signs, projections, architectural structures, packaging, and aesthetic structures (e.g., display of images on a piece of jewelry) and the like.

[0067] As shown in FIG. 2, the display device 1000 includes a display panel 100 and a cover plate 200.

[0068] In some examples, the display panel 100 can be an organic light-emitting diode display panel (OLED). The cover plate 200 is located on the light-emitting side of the display panel 100, and the cover plate 200 protects the display panel 100 from damage caused by external impacts and the like. The material of the cover plate 200 can be glass.

[0069] In some examples, as shown in FIG. 3, the display device 1000 can further include an optical element 300, such as an under-screen camera, an under-screen fingerprint recognition sensor, an infrared sensor, and the like, so that the display device 1000 can implement various functions such as photographing, video recording, fingerprint recognition, and the like.

[0070] In some embodiments, as shown in FIG. 4, the display panel 100 in the above display device 1000 includes a plurality of light-emitting devices 10 and an adjustment functional layer 20 located on the light-emitting side of the plurality of light-emitting devices 10.

[0071] The light-emitting side of the light-emitting device 10 refers to the side from which the light-emitting device 10 emits light.

[0072] As shown in FIG. 8, the plurality of light-emitting devices 10 have light-emitting portions 101 for emitting light. The light-emitting portion 101 has a certain thickness. For example, the plurality of light-emitting portions 101 can emit light of different colors, for example, the light of different colors can include red light, green light, and blue light, and the light of different colors cooperates with each other so that the display panel 100 can display an image.

[0073] As shown in FIG. 4, the above light-emitting device 10 includes a first light-emitting device 11 and a second light-emitting device 12 that respectively emit light of different colors. For example, the wavelength range of the light emitted by the first light-emitting device 11 is different from the wavelength range of the light emitted by the second light-emitting device 12.

[0074] Based on considerations such as light-emitting life, the orthographic projection area of the light-emitting portion of the light-emitting device that emits light of different colors is different.

[0075] For example, the orthographic projection area of the light-emitting portion 101 of the first light-emitting device 11 on the adjustment functional layer 20 is smaller than the orthographic projection area of the light-emitting portion 101 of the second light-emitting device 12 on the adjustment functional layer 20. Therefore, the area of the top view of the light-emitting portion 101 of the first light-emitting device 11 is smaller than the area of the top view of the light-emitting portion 101 of the second light-emitting device 12.

[0076] The adjusting functional layer 20 is used to converge the light emitted by each light emitting part 101 and then emit the light. In this way, the adjusting functional layer 20 can improve the light emitting efficiency of the light emitting device 10, adjust the light emitting viewing angle of the light emitting device 10, and thus improve the brightness of the display panel 100.

[0077] For example, as shown in FIG. 4, the adjusting functional layer 20 can adjust, for example, shield, reflect, refract, or the like, part of the light with a large viewing angle in the light emitted by the light emitting part 101, so that the part of the light is emitted in a direction of a small viewing angle (close to a normal viewing angle), thereby realizing the convergence of the light.

[0078] In an implementation, the adjusting functional layer in the display panel includes a light shielding layer 21' (herein the light shielding effect of the adjusting functional layer 20' on the light is described), which has a plurality of openings 211', one opening 211' corresponding to one light emitting part 101' of the light emitting device. The sizes of the openings 211' are not equal, but the difference between the size of the light emitting part 101' emitting light of different colors and the size of the corresponding opening 211' is equal. Referring to FIG. 5, the light with large viewing angle emitted by the edge part of the light emitting part 101' close to the edge thereof of the display panel 100' is easily shielded by the light shielding layer 21'. Since the difference S4 between the size S3 of the opening 211' and the size S1 of the corresponding light emitting part 101' is equal (it can be understood that FIG. 5 is described by taking an example that the distance between the two edge parts on the left and right sides of the light emitting part 101' and the side wall of the adjacent opening 211' in the first direction X is equal, and the distance is S4 / 2, and the difference between the size S3 of the opening 211' and the size S1 of the corresponding light emitting part 101' is S4. Of course, the distance between the two edge parts on the left and right sides of the light emitting part 101' and the side wall of the adjacent opening 211' in the first direction X can also be unequal), the size S2 of the edge part shielded by the part of the light shielding layer 21' around the opening 211' is equal. In the case where the sizes S1 of the light emitting parts 101' are not equal, the proportion of the size S2 of the edge part in the size S1 of the light emitting part is not equal. Specifically, the larger the size S1 of the light emitting part 101' (herein the size can be the size of the orthographic projection of the light emitting part 101' on the adjusting functional layer), the smaller the proportion of the size S2 of the edge part in the size S1 of the light emitting part 101', and the smaller the shielding effect of the adjusting functional layer 20' on the light emitted by the light emitting part 101'. Since the sizes of the light emitting parts 101' of the light emitting devices 10' emitting light of different colors in the display panel 100' are different, the proportion of the shielded light in the total light emitted by the light emitting part is different, which causes the loss of the light emitted by the different light emitting parts 101' after the light passes through the adjusting functional layer 20' to be different, so that the brightness of the light of different colors emitted by the different light emitting devices 10' at the same viewing angle (mainly large viewing angle) is greatly different, and the color deviation of the display panel in displaying white light at large viewing angle is serious.

[0079] The dashed line with arrow in FIG. 5 represents the direction of the light.

[0080] Based on this, in the embodiments of the present disclosure, as shown in FIGS. 6-8, the first light emitting device 11 further has an adjusting part 102.

[0081] As shown in FIG. 9, the orthographic projection of the light emitting part 101 of the first light emitting device 11 on the adjusting functional layer 20 surrounds the orthographic projection of the adjusting part 102 on the adjusting functional layer 20. The shape of the orthographic projection of the light emitting part 101 can be a closed figure, for example, a ring figure, and the orthographic projection of the adjusting part 102 is located within the closed figure.

[0082] For example, as shown in FIG. 6 and FIG. 9, the adjusting part 102 does not emit light. Part of the light emitted by the light emitting part 101, for example, light with a large viewing angle, can be incident into the part of the adjusting functional layer 20 directly opposite to the adjusting part 102, so that the part of the adjusting functional layer 20 directly opposite to the light emitting part 101 and the adjusting part 102 is also incident with light. The dashed line with arrows in FIG. 8 represents the direction of light emission.

[0083] Since the area of the orthographic projection of the light emitting part 101 of the first light emitting device 11 is relatively small, the above arrangement can keep the area of the orthographic projection of the light emitting part 101 of the first light emitting device 11 unchanged while making the size of the outer contour of the orthographic projection of the light emitting part 101 larger, so as to reduce the difference between the size of the outer contour of the orthographic projection of the light emitting part 101 of the first light emitting device 11 and the size of the outer contour of the orthographic projection of the light emitting part 101 of the second light emitting device 12, so that the difference between the light shielding effect of the adjusting functional layer 20 on the light emitted by the light emitting part 101 of the first light emitting device 11 and the light shielding effect of the adjusting functional layer 20 on the light emitted by the light emitting part 101 of the second light emitting device 12 is smaller or tends to be consistent, so that the loss of the light with a large viewing angle emitted by the two light emitting parts 101 after passing through the adjusting functional layer 20 tends to be consistent, thereby making the brightness of the first light emitting device 11 and the second light emitting device 12 at the same large viewing angle tend to be consistent. In the case where the light emitted by the first light emitting device 11 and the light emitted by the second light emitting device 12 are combined to form light with other colors, for example, white light, the above arrangement can avoid the combined white light from having a serious color cast phenomenon, thereby alleviating the color cast phenomenon of the display panel 100.

[0084] In some embodiments, as shown in FIG. 9 and FIG. 10, the shape of the outer contour of the orthographic projection of the light emitting part 101 on the adjusting functional layer 20 is the same as the shape of the outer contour of the orthographic projection of the adjusting part 102 on the adjusting functional layer 20 in the same first light emitting device 11.

[0085] Since the orthographic projection of the light emitting part 101 of the first light emitting device 11 on the adjusting functional layer 20 surrounds the orthographic projection of the adjusting part 102 on the adjusting functional layer 20, the above arrangement can make the light emitted by the light emitting part 101 and incident into the part of the adjusting functional layer 20 directly opposite to the adjusting part 102 more uniform, which is conducive to improving the light emission uniformity of the light after passing through the adjusting functional layer 20 and alleviating the color cast phenomenon of the display panel 100.

[0086] In some embodiments, as shown in FIGS. 9-11, the shape of the regular projection of the adjusting portion 102 on the adjusting functional layer 20 is a central symmetric shape.

[0087] For example, the shape of the regular projection of the light emitting portion 101 on the adjusting functional layer 20 can also be a central symmetric shape.

[0088] In this way, it is beneficial to make the distance from each point on the outer contour line of the light emitting portion 101 to the center of the adjusting portion 102 tend to be equal, so that the light emitted by the light emitting portion 101 at different viewing angles (here, the different viewing angles can be different large viewing angles) tends to have consistent light amounts blocked by the adjusting functional layer 20, so that the light amounts of the light at different viewing angles after passing through the adjusting functional layer 20 tend to be consistent, which is beneficial to improve the light emission uniformity of the first light emitting device 11, improve the brightness difference of the light emitted by the first light emitting device 11 at different viewing angles, and alleviate the color cast phenomenon of the display panel 100. In addition, the light emitted by the light emitting portion 101 can be incident into the portion of the adjusting functional layer 20 that is directly opposite to the light emitting portion 101 and the adjusting portion 102, which further improves the light emission uniformity of the light emitting device 10 and improves the display effect of the display panel 100.

[0089] For example, the shape of the regular projection of the light emitting portion 101 on the adjusting functional layer 20 can also be a central symmetric shape.

[0090] For example, in the same first light emitting device 11, the shape of the regular projection of the adjusting portion 102 on the adjusting functional layer 20 is a square, and the shape of the regular projection of the light emitting portion 101 on the adjusting functional layer 20 is also a square.

[0091] For example, in the same first light emitting device 11, the shape of the regular projection of the adjusting portion 102 on the adjusting functional layer 20 is a square, and the shape of the regular projection of the light emitting portion 101 on the adjusting functional layer 20 is also a square.

[0092] With the above arrangement, the light emission uniformity of the first light emitting device 11 can be improved, the brightness difference of the light emitted by the first light emitting device 11 at different viewing angles can be improved, the difference in light loss amount of the light emitted by the first light emitting device 11 and the light emitted by the second light emitting device 12 after passing through the adjusting functional layer 20 can be reduced, the color cast phenomenon of the display panel 100 can be improved, and the display effect of the display panel 100 can be improved.

[0093] In some embodiments, as shown in FIGS. 9-11, the center of the regular projection of the adjusting portion 102 on the adjusting functional layer 20 coincides with the center of the regular projection of the light emitting portion 101 on the adjusting functional layer 20.

[0094] Thus, the distance from each point on the outer contour line of the light emitting portion 101 to the center of the adjusting portion 102 can be further made to tend to be equal, the uniformity of the light brightness of the light rays of different viewing angles emitted by the first light emitting portion 101 after passing through the adjusting functional layer 20 is ensured, and the color cast phenomenon of the display panel 100 is alleviated.

[0095] In some embodiments, as shown in FIG. 7, the display panel 100 comprises a substrate 30, a pixel circuit layer 40, and a planar layer 50 which are sequentially stacked.

[0096] The type of the substrate 30 described above includes various types, which can be selected and arranged according to actual needs.

[0097] For example, the substrate 30 described above can be a rigid substrate. The rigid substrate 30 can be a glass substrate or a PMMA (Polymethylmethacrylate) substrate, etc.

[0098] For example, the substrate 30 described above can be a flexible substrate 30. The flexible substrate 30 can be a PET (Polyethyleneterephthalate) substrate, a PEN (Polyethylenenaphthalatetwoformic acid glycolester) substrate, or a PI (Polyimide) substrate, etc. At this time, the display panel 100 described above can realize flexible display, for example.

[0099] The substrate 30 can be a single-layer structure or a composite structure.

[0100] In the case where the substrate 30 is a composite structure, the substrate 30 can comprise a support layer and a buffer layer which are sequentially stacked. The material of the support layer can be glass, and the material of the buffer layer can be PI, etc.

[0101] For example, the pixel circuit layer 40 comprises a semiconductor layer Poly, a first gate conductive layer GT1, a second gate conductive layer GT2, a first source-drain conductive layer SD1, etc. which are sequentially stacked on one side of the substrate 30 described above.

[0102] For example, a first gate insulating layer GI1 can be arranged between the semiconductor layer Poly and the first gate conductive layer GT1, a second gate insulating layer GI2 can be arranged between the first gate conductive layer GT1 and the second gate conductive layer GT2, and an interlayer dielectric layer ILD can be arranged between the second gate conductive layer GT2 and the first source-drain conductive layer SD1.

[0103] For example, the material of the first gate insulating layer GI1, the second gate insulating layer GI2 and the interlayer dielectric layer ILD can be silicon oxide, silicon nitride, silicon oxynitride, etc.

[0104] For example, the material of the first gate conductive layer GT1, the second gate conductive layer GT2 and the first source-drain conductive layer SD1 can be a metal material, for example, a combination of one or more of Al (aluminum), Ag (silver), Cu (copper), Cr (chromium), Mo (molybdenum), Ti (titanium).

[0105] For example, the material of the first gate conductive layer GT1, the second gate conductive layer GT2 and the first source-drain conductive layer SD1 can be a metal material, for example, a combination of one or more of Al (aluminum), Ag (silver), Cu (copper), Cr (chromium), Mo (molybdenum), Ti (titanium).

[0106] It should be noted that the orthographic projection of the semiconductor layer Poly on the substrate 30 overlaps with the orthographic projection of the first gate conductive layer GT1 on the substrate. After the first gate conductive layer GT1 is formed on the side of the semiconductor layer Poly away from the substrate, the semiconductor layer Poly can be doped with the first gate conductive layer GT1 as a mask. The part of the semiconductor layer Poly covered by the first gate conductive layer GT1 forms the active pattern (i.e. the channel region) of each transistor, and the part of the semiconductor layer Poly not covered by the first gate conductive layer GT1 forms a conductor, which can serve as the first or second electrode of each transistor. The part of the first gate conductive layer GT1 overlapping with the semiconductor layer Poly forms the gate pattern (i.e. the gate) of each transistor.

[0107] The plurality of transistors and the at least one capacitor constitute a pixel circuit, and the pixel circuit layer includes a plurality of pixel circuits. The above-mentioned transistors can be thin film transistors (TFTs). Thin film transistors include double-gate transistors and single-gate transistors.

[0108] In some examples, the material of the above-mentioned planar layer 50 can be an insulating material, for example, which can be an organic material such as polyimide, etc.

[0109] For example, as shown in FIG. 7, the planar layer 50 has a plurality of grooves 51 extending along its thickness direction. The plurality of grooves 51 are distributed at intervals, and one first light emitting device 11 corresponds to one groove 51.

[0110] The adjustment part 102 of the first light emitting device 11 is located in the groove 51, and the light emitting part 101 is located on the side of the planar layer 50 away from the substrate 30.

[0111] For example, the thickness of the adjusting portion 102 is equal to or approximately equal to the thickness of the light emitting portion 101.

[0112] Since the adjusting portion 102 is located in the groove 51, the distance between the adjusting portion 102 and the substrate 30 is smaller than the distance between the light emitting portion 101 and the substrate 30. The surface of the adjusting portion 102 away from the substrate 30 has a step with the surface of the light emitting portion 101 away from the substrate 30. Thus, the side surface of the adjusting portion 102 in the thickness direction can be at least partially separated from the side surface of the light emitting portion 101 in the thickness direction, which is conducive to ensuring that the adjusting portion 102 does not emit light.

[0113] In some examples, as shown in FIG. 7, the depth of the groove 51 is greater than or equal to the thickness of the adjusting portion 102.

[0114] Thus, the adjusting portion 102 is located in the groove 51 as a whole, and the surface of the adjusting portion 102 away from the substrate 30 is lower than the surface of the flat layer 50 away from the substrate 30, or the surface of the adjusting portion 102 away from the substrate 30 is flush with the surface of the flat layer 50 away from the substrate 30, so that the adjusting portion 102 and the light emitting portion 101 are disconnected, the adjusting portion 102 and the light emitting portion 101 are insulated, the adjusting portion 102 is ensured not to participate in the light emission of the light emitting device, only the light emitting portion 101 emits light in the first light emitting device 11, the adjusting portion 102 plays a role of increasing the outer contour size of the orthographic projection of the light emitting portion 101, and the light emitting area of the light emitting portion 101 is not changed, so that the light emitted by the light emitting portion 101 of the first light emitting device 11 and the light emitted by the light emitting portion 101 of the second light emitting device 12 are adjusted by the functional layer 20 to be consistent, and thus the color cast phenomenon of the display panel 100 can be alleviated.

[0115] For example, as shown in FIG. 8, the light emitting device 10 includes a first electrode 1001, a light emitting layer 1002, and a second electrode 1003 which are sequentially stacked on the flat layer 50.

[0116] For example, the first electrode 1001 can be one of an anode and a cathode, and the second electrode 1003 can be the other of the anode and the cathode. Taking the first electrode 1001 as the anode and the second electrode 1003 as the cathode as an example for description.

[0117] For example, as shown in FIG. 7 and FIG. 8, the first electrode 1001 can be connected with a transistor TFT in a pixel circuit to receive an electrical signal from the pixel circuit, the second electrode 1003 receives a common voltage, and the light emitting layer 1002 can emit light under the action of the electrical signal and the common voltage.

[0118] It can be understood that FIG. 7 can be a sectional structure view of FIG. 9 along DD' direction, or a sectional structure view of FIG. 10 along EE' direction.

[0119] In some examples, as shown in FIG. 8, the first electrode 1001 of the first light emitting device 11 includes a first sub-portion 1001A and a second sub-portion 1001B which are disconnected. The first sub-portion 1001A is located in the groove 51 and constitutes a part of the adjusting portion 102. The second sub-portion 1001B is located outside the groove 51 and constitutes a part of the light emitting portion 101.

[0120] For example, the second sub-portion 1001B is connected with the pixel circuit and receives the electrical signal from the pixel circuit. Since the second sub-portion 1001B is a part of the light emitting portion 101 and the first sub-portion 1001A is a part of the adjusting portion 102, the orthographic projection of the second sub-portion 1001B surrounds the first sub-portion 1001A, the first sub-portion 1001A is disconnected from the second sub-portion 1001B, the second sub-portion 1001B cannot receive the electrical signal from the pixel circuit, and the part of the light emitting layer 1002 which is directly opposite to the second sub-portion 1001B cannot be provided with the electrical signal, so that the part of the light emitting layer 1002 does not emit light.

[0121] It can be understood that the part of the light emitting layer 1002 which is directly opposite to the groove 51 and the part of the light emitting layer 1002 which is located on the planar layer 50 can be disconnected or connected with each other. The part of the second electrode 1003 which is directly opposite to the groove 51 and the part of the second electrode 1003 which is located on the planar layer 50 can be disconnected or connected with each other.

[0122] In yet some examples, the depth of the groove 51 is greater than or equal to the thickness of the first electrode 1001. In this way, it can be ensured that the first sub-portion 1001A and the second sub-portion 1001B are disconnected, and it can be ensured that the adjusting portion 102 does not emit light.

[0123] In some embodiments, as shown in FIG. 12, the display panel 100 in the display device 1000 further includes a boundary layer 60. The boundary layer 60 is located between the planar layer 50 and the adjusting function layer 20.

[0124] For example, the orthographic projection shape of the boundary layer 60 on the substrate 30 is a mesh shape, and the boundary layer 60 includes a plurality of first openings 61 and a plurality of second openings 62.

[0125] As shown in FIG. 12 and FIG. 13, one light emitting device 10 is arranged corresponding to one first opening 61 or one second opening 62.

[0126] As shown in FIG. 13, for example, a portion of the second light emitting device 12 is located in the second opening 62, and one second light emitting device 12 is arranged corresponding to one second opening 62. The first electrode 1001 of the second light emitting device 12 is located between the planar layer 50 and the boundary layer 60, and at least a portion of the first electrode 1001 is exposed through the second opening 62. A portion of the light emitting layer 1002 of the second light emitting device 12 is located in the second opening 62, and another portion of the light emitting layer 1002 overlaps the boundary layer 60. The second electrodes 1003 of the light emitting devices 10 are connected to each other and form an integrated structure. In the thickness direction of the substrate, the second electrode 1003 of the second light emitting device 12 covers the light emitting layer 1002 thereof.

[0127] As shown in FIG. 8, for example, one first light emitting device 11 is arranged corresponding to one first opening 61, the groove 51 is in communication with the first opening 61, and the orthographic projection of the groove 51 on the substrate 30 is located within the orthographic projection of the first opening 61 on the substrate 30. A portion of the first light emitting device 11 is located in the first opening 61 and the corresponding groove 51. Among them, the first sub-portion 1001A of the first electrode 1001 of the first light emitting device 11 is located in the groove 51, the second sub-portion 1001B of the first electrode 1001 is located between the planar layer 50 and the boundary layer 60, and at least a portion of the second sub-portion 1001B is exposed through the first opening 61 of the boundary layer 60. The light emitting layer 1002 of the first light emitting device 11 is located on the first sub-portion 1001A of the first electrode 1001, in the first opening 61, and on the boundary layer 60, respectively. In the thickness direction of the substrate, the second electrode 1003 of the first light emitting device 11 covers the light emitting layer 1002 thereof.

[0128] It can be understood that the light emitting portion 101 of the light emitting device 10 is the portion of the light emitting device 10 that is directly opposite the first opening 61 or the second opening 62 (among the portions of the light emitting device that are directly opposite the first opening 61, the portion of the light emitting device that is directly opposite the groove 51 is excluded). The adjusting portion 102 of the first light emitting device 11 is the portion of the first light emitting device 11 that is directly opposite the groove 51.

[0129] The structure of the adjusting functional layer 20 can be various, and can be selected and arranged according to actual conditions, and the embodiments of the present disclosure do not limit this.

[0130] In some embodiments, as shown in FIG. 12, the above-mentioned adjusting functional layer 20 can be a color filter layer, and the adjusting functional layer 20 includes an optical shielding layer 21 and a plurality of color filters 22.

[0131] For example, the optical shielding layer 21 can be a black matrix. The material of the black matrix includes a light-proof material. The optical shielding layer 21 includes a plurality of third openings 211. The top view shape of the optical shielding layer 21 can be approximately a mesh structure, and the third openings 211 form the mesh holes of the mesh structure.

[0132] The color filter 22 is located at least in the third opening 211. For example, the color filter 22 is located in the third opening 211. For another example, a part of the color filter 22 is located in the third opening 211, and another part is located on the light shielding layer 21.

[0133] The light emitted by the light emitting device 10 can be emitted out after passing through the color filter 22.

[0134] The light emitting device 10 emitting different colors can be correspondingly arranged with different types of color filters 22. The color filter 22 can adjust the light emitted by the light emitting device 10, so that the color purity and color gamut of the light emitted out through the color filter 22 are high, thereby improving the display effect of the display panel 100.

[0135] The display panel 100 comprising the color filter 22 described above can adopt a COE (CF On Encapsulation) structure, so that the display panel 100 has the advantages of high contrast, low power consumption, wide color gamut, and the thickness of the display panel 100 is small, which is beneficial to realize the thin design of the display panel 100.

[0136] For example, as shown in FIG. 12, in the plurality of third openings 211, one third opening 211 in a certain number of third openings 211 is correspondingly arranged with one first opening 61, and the orthographic projection of one first opening 61 on the substrate 30 is located within the orthographic projection range of one third opening 211 on the substrate 30.

[0137] For example, the boundary line of the orthographic projection of one first opening 61 on the substrate 30 is located within the boundary line range of the orthographic projection of one third opening 211 on the substrate 30. The orthographic projection area of the first opening 61 is less than or equal to the orthographic projection area of the third opening 211.

[0138] Therefore, the light emitted by the first light emitting device 11 can be emitted out through the third opening 211, so that the light emitting amount of the first light emitting device 11 is large, and the light shielding layer 21 can avoid the light mixing phenomenon between the light emitted by the first light emitting device 11 and the light emitted by other adjacent light emitting devices, thereby improving the display effect of the display panel 100. In addition, in the case of the display panel 100 in the screen-off state, the light shielding layer 21 can also shield the external incident light, thereby improving the reflection color problem in the screen-off state.

[0139] For example, in the plurality of third openings 211, one third opening 211 in a certain number of third openings 211 is correspondingly arranged with one second opening 62, and the orthographic projection of one second opening 62 on the substrate 30 is located within the orthographic projection range of one third opening 211 on the substrate 30.

[0140] Thus, the light emitted by the second light emitting device 12 can be emitted through the third opening 211, so that the light emitting amount of the second light emitting device 12 is large, and the light shielding layer 21 can avoid the light emitted by the second light emitting device 12 from mixing with other light, thereby improving the display effect of the display panel 100. In addition, in the case of the display panel 100 in the screen-off state, the light shielding layer 21 can also shield the light incident from the outside, thereby improving the problem of reflected color phase in the screen-off state.

[0141] In some examples, as shown in FIG. 3 and FIG. 14, the display panel 100 includes a display area A, and the display area A is an area of the display panel 100 for displaying a picture.

[0142] The shape of the display area A can be a rectangle or a rounded rectangle, etc. The rounded rectangle means that the four corners of the rectangle are all rounded.

[0143] For example, the display area A includes a main display area A1 and a sub-display area A2.

[0144] For example, the shape of the sub-display area A2 can be a circle, an ellipse or a rectangle, etc.

[0145] The sub-display area A2 is located at least one side of the main display area A1.

[0146] For example, the sub-display area A2 is located at one side or multiple sides of the main display area A1.

[0147] For example, in the case where the shape of the display area A is a rectangle, the sub-display area A2 can be located at any position in the middle of the rectangle, or the sub-display area A2 can be located close to any corner of the rectangle, or the sub-display area A2 can be located close to any side of the rectangle.

[0148] In the display panel 100, the part located in the main display area A1 and the part located in the sub-display area A2 can be used for picture display.

[0149] The pixel density of the sub-display area A2 is less than the pixel density of the main display area A1, so that the light transmittance of the sub-display area A2 is greater than the light transmittance of the main display area A1.

[0150] For example, the pixel density of the sub-display area A2 is equal to the pixel density of the main display area A1, and the light transmittance of the sub-display area A2 is greater than the light transmittance of the main display area A1.

[0151] As known from the above, the display device 1000 can further include an optical element 300, and the optical element 300 is located in the sub-display area A2 and on the non-light emitting side of the display panel 100.

[0152] The light-out side of the display panel 100 refers to one side of the display panel 100 that can display a picture. The non-light-out side of the display panel 100 refers to the side opposite to the light-out side of the display panel 100.

[0153] In the working process of the optical element 300, external light needs to pass through the sub-display area A2 to irradiate on the optical element 300, so that the optical element 300 can start its corresponding function. The external light can be incident on the optical element 300 through the sub-display area A2 with a high light transmittance, so that the optical element 300 has a large amount of light, thereby optimizing the performance of the optical element 300, for example, improving the accuracy of sensor identification or improving the shooting quality of the camera, etc. The sensor can be a fingerprint identification sensor or an infrared sensor.

[0154] Embodiments of the present disclosure take the camera as an example of the optical element 300.

[0155] For example, in the working process of the camera, external light can pass through the part of the display panel located in the sub-display area A2. In this way, the camera can collect the light to realize the functions of shooting, video recording or signal collection. For example, in the case of camera working (for example, user self-shooting), the sub-display area A2 can present a black picture, and the main display area A1 presents a picture of user self-shooting, which more clearly shows the position of the camera. Alternatively, the sub-display area A2 and the main display area A1 as a whole present a picture of user self-shooting, without showing the position of the camera.

[0156] For example, the parts of the display panel located in the sub-display area A2 and the main display area A1 can display, so that the display panel 100 and the display device 1000 as a whole can display a picture.

[0157] In some examples, as shown in FIG. 15, the first light emitting device 11 includes a third light emitting device 13 and a fourth light emitting device 14 emitting light of different colors. The second light emitting device 12, the third light emitting device 13 and the fourth light emitting device 14 are located in the sub-display area A2.

[0158] As shown in FIG. 15, the light emitting device 10 further includes a fifth light emitting device 15, a sixth light emitting device 16 and a seventh light emitting device 17 located in the main display area A1. The fifth light emitting device 15, the sixth light emitting device 16 and the seventh light emitting device 17 respectively emit light of different colors.

[0159] Specifically, the color of the light emitted by the second light emitting device 12 is the same as the color of the light emitted by the sixth light emitting device 16, the color of the light emitted by the third light emitting device 13 is the same as the color of the light emitted by the fifth light emitting device 15, and the color of the light emitted by the fourth light emitting device 14 is the same as the color of the light emitted by the seventh light emitting device 17.

[0160] The color variety emitted by the light emitting devices 10 of the main display area A1 is the same as the color variety emitted by the light emitting devices 10 of the auxiliary display area A2. In the case that the main display area A1 and the auxiliary display area A2 are used to display images of the same color and the same brightness, the above-mentioned arrangement is advantageous to reduce the difference of display color between the main display area A1 and the auxiliary display area A2, and improve the display uniformity of the display panel 100.

[0161] For example, the second light emitting device 12 emits green light, the third light emitting device 13 emits red light, and the fourth light emitting device 14 emits blue light.

[0162] For example, as shown in FIGS. 15-18, the plurality of light emitting devices 10 of the auxiliary display area A2 includes a plurality of first light emitting device groups 110. The first light emitting device group 110 includes at least one second light emitting device 12, at least one third light emitting device 13 and at least one fourth light emitting device 14 which are adjacent. The plurality of light emitting devices 10 of the main display area A1 includes a plurality of second light emitting device groups 120. The second light emitting device group 120 includes at least one fifth light emitting device 15, at least one sixth light emitting device 16 and at least one seventh light emitting device 17 which are adjacent.

[0163] For example, the number of the second light emitting devices 12 included in the first light emitting device group 110 can be equal to or different from the number of the sixth light emitting devices 16 included in the second light emitting device group 120. The number of the third light emitting devices 13 included in the first light emitting device group 110 can be equal to or different from the number of the fifth light emitting devices 15 included in the second light emitting device group 120. The number of the fourth light emitting devices 14 included in the first light emitting device group 110 can be equal to or different from the number of the seventh light emitting devices 17 included in the second light emitting device group 120.

[0164] The ratio of the sum of the areas of the orthographic projections of the light emitting portions 101 of the third light emitting devices 13, the sum of the areas of the orthographic projections of the light emitting portions 101 of the second light emitting devices 12 and the sum of the areas of the orthographic projections of the light emitting portions 101 of the fourth light emitting devices 14 on the adjustment functional layer 20 in the same first light emitting device group 110 is equal to the ratio of the sum of the areas of the orthographic projections of the light emitting portions 101 of the fifth light emitting devices 15, the sum of the areas of the orthographic projections of the light emitting portions 101 of the sixth light emitting devices 16 and the sum of the areas of the orthographic projections of the light emitting portions 101 of the seventh light emitting devices 17 on the adjustment functional layer 20 in the same second light emitting device group 120.

[0165] That is, the ratio among the total area of the light emitting part 101 emitting red light, the total area of the light emitting part 101 emitting green light, and the total area of the light emitting part 101 emitting blue light in the same first light emitting device group 110 is equal to the ratio among the total area of the light emitting part 101 emitting red light, the total area of the light emitting part 101 emitting green light, and the total area of the light emitting part 101 emitting blue light in the same second light emitting device group 120, so that the color gamut range of the colors that can be synthesized by the light emitted by the first light emitting device group 110 and the second light emitting device group 120 can be similar or the same, thereby facilitating reduction of the difference between the images displayed by the main display area A1 and the auxiliary display area A2 and improvement of the display uniformity of the display panel 100.

[0166] It can be understood that there are various ways to set the pixel density of the auxiliary display area A2 to be less than the pixel density of the main display area A1, which can be selected according to actual needs.

[0167] In some examples, as shown in FIGS. 15-18, the arrangement density of the plurality of light emitting devices 10 in the first light emitting device group 110 is less than or equal to the arrangement density of the plurality of light emitting devices 10 in the second light emitting device group 120.

[0168] For example, the arrangement density of the plurality of light emitting devices 10 in the first light emitting device group 110 is equal to the arrangement density of the plurality of light emitting devices 10 in the second light emitting device group 120. The spacing between two adjacent light emitting devices 10 in the first light emitting device group 110 is equal to the spacing between two adjacent light emitting devices 10 in the second light emitting device group 120. Then, the density of the first light emitting device group 110 in the auxiliary display area A2 is less than the density of the second light emitting device group 120 in the main display area A1, that is, the spacing between two adjacent first light emitting device groups 110 in the auxiliary display area A2 is greater than the spacing between two adjacent second light emitting device groups 120 in the main display area A1.

[0169] For another example, as shown in FIGS. 16 and 18, the arrangement density of the plurality of light emitting devices 10 in the first light emitting device group 110 is less than the arrangement density of the plurality of light emitting devices 10 in the second light emitting device group 120. The spacing between the light emitting devices 10 in the first light emitting device group 110 is greater than the spacing between the light emitting devices 10 in the second light emitting device group 120.

[0170] It can be understood that the pixel density of the auxiliary display area A2 is equal to or approximately equal to the arrangement density of the plurality of light emitting devices 10 in the auxiliary display area A2. The pixel density of the main display area A1 is equal to or approximately equal to the arrangement density of the plurality of light emitting devices 10 in the main display area A1.

[0171] Therefore, the pixel density of the sub-display area A2 can be ensured to be less than the pixel density of the main display area A1, so that the light transmittance of the sub-display area A2 is greater than the light transmittance of the main display area A1, thereby facilitating to increase the light collection amount of the optical element 300 and improve the performance of the optical element 300.

[0172] In some examples, as shown in FIG. 15, in the third light emitting device 13, the area of the light emitting part 101 is equal to the area of the adjusting part 102. In the fourth light emitting device 14, the area of the light emitting part 101 is equal to the area of the adjusting part 102.

[0173] Here, the area of the light emitting part 101 refers to the area of the orthogonal projection of the light emitting part 101 on the substrate 30. The area of the adjusting part 102 refers to the area of the orthogonal projection of the adjusting part 102 on the substrate 30,

[0174] Therefore, the size of the orthogonal projection of the light emitting part 101 in the third light emitting device 13 and the size of the orthogonal projection of the light emitting part 101 in the fourth light emitting device 14 can be made to tend to be equal to the size of the orthogonal projection of the light emitting part 101 in the second light emitting device 12, so that the shielding effect of the adjusting functional layer 20 on the light emitted by the third light emitting device 13, the shielding effect of the adjusting functional layer 20 on the light emitted by the fourth light emitting device 14, and the shielding effect of the adjusting functional layer 20 on the light emitted by the second light emitting device 12 tend to be consistent, thereby making the light loss of each light emitting device 10 (each light emitting device 10 is the third light emitting device 13, the fourth light emitting device 14, and the second light emitting device 12) after passing through the adjusting functional layer 20 tend to be consistent, and the brightness of the light emitted by each light emitting device 10 after passing through the adjusting functional layer 20 under the same large viewing angle is similar, thereby alleviating the color deviation phenomenon of the image displayed by the sub-display area A2, and reducing the color deviation difference between the image displayed by the sub-display area A2 and the image displayed by the main display area A1.

[0175] In some examples, the ratio of the sum of the areas of the orthogonal projections of the light emitting parts 101 of the third light emitting devices 13, the sum of the areas of the orthogonal projections of the light emitting parts 101 of the second light emitting devices 12, and the sum of the areas of the orthogonal projections of the light emitting parts 101 of the fourth light emitting devices 14 on the adjusting functional layer 20 in the same first light emitting device group 110 is 1:2:1.8.

[0176] For example, the ratio of the sum of the areas of the orthogonal projections of the light emitting parts 101 of the fifth light emitting devices 15, the sum of the areas of the orthogonal projections of the light emitting parts 101 of the sixth light emitting devices 16, and the sum of the areas of the orthogonal projections of the light emitting parts 101 of the seventh light emitting devices 17 on the adjusting functional layer 20 in the same second light emitting device group 120 is also 1:2:1.8.

[0177] Thus, the color gamut of the light emitted by the first light emitting device group 110 can be similar or equal to the color gamut of the light emitted by the second light emitting device group 120, which is conducive to reducing the display difference between the main display area A1 and the auxiliary display area A2. The light emitting life of the light emitting device 10 emitting different color light in the main display area A1 and the auxiliary display area A2 can also be made consistent, and the light emitting life of the light emitting device 10 emitting different color light in the display panel 100 can be made consistent, thereby improving the service life of the display panel 100 and the display device 1000.

[0178] In some examples, as shown in FIG. 8 and FIG. 12, the plurality of first openings 61 includes a plurality of first sub-openings 611 and a plurality of second sub-openings 612. A part of the third light emitting device 13 is located in the first sub-opening 611, and a part of the fourth light emitting device 14 is located in the second sub-opening 612.

[0179] In the same first light emitting device group 110, the ratio of the sum of the areas of the first sub-opening 611 corresponding to each third light emitting device 13, the sum of the areas of the second opening 62 corresponding to each second light emitting device 12, and the sum of the areas of the second sub-opening 612 directly opposite each fourth light emitting device 14 is 1:1:1.8.

[0180] Thus, in the auxiliary display area A2, the light shielding layer 21 can have substantially the same shielding effect on the different color light emitted by each light emitting device 10, so that the loss of the light emitted by each light emitting device 10 after passing through the light shielding layer 21 is consistent, and the brightness of the different color light emitted through the light shielding layer 21 at the same large viewing angle is similar, thereby making the brightness of the different color light emitted from the auxiliary display area A2 of the display panel 100 at the same large viewing angle consistent, and alleviating the color deviation phenomenon of the auxiliary display area A2 of the display panel 100.

[0181] For example, in the main display area A1, a part of the fifth light emitting device 15 is located in one second opening 62, a part of the sixth light emitting device 16 is located in another second opening 62, and a part of the seventh light emitting device 17 is located in another second opening 62. In the same second light emitting device group 120, the ratio of the total area of the second opening 62 corresponding to each light emitting device 10 emitting red light (i.e., the total area of the second opening 62 corresponding to each fifth light emitting device 15), the total area of the second opening 62 corresponding to each light emitting device 10 emitting green light (i.e., the total area of the second opening 62 corresponding to each sixth light emitting device 16), and the total area of the second opening 62 corresponding to each light emitting device 10 emitting blue light (i.e., the total area of the second opening 62 corresponding to each seventh light emitting device 17) is also 1:1:1.8.

[0182] Thus, the brightness ranges of the different colors of light emitted by the main display area A1 and the auxiliary display area A2 of the display panel 100 can be made to be consistent, the color deviation of the main display area A1 and the auxiliary display area A2 can be made to be consistent (for example, the pictures displayed by the main display area A1 and the auxiliary display area A2 are both greenish), the display uniformity of the main display area A1 and the auxiliary display area A2 is improved, and the display effect of the display panel 100 and the display device 1000 is improved.

[0183] In some examples, as shown in FIG. 15, the first light emitting device group 110 includes one second light emitting device 12, one third light emitting device 13, and one fourth light emitting device 14. The line connecting the center of the second light emitting device 12, the center of the third light emitting device 13, and the center of the fourth light emitting device 14 forms a triangle.

[0184] In the auxiliary display area A2, the plurality of first light emitting device groups 110 are arranged in an array.

[0185] The arrangement of the plurality of light emitting devices 10 in the auxiliary display area A2 can be referred to as Real RGB arrangement or similar Real RGB arrangement.

[0186] As shown in FIG. 15, the second light emitting device group 120 includes one fifth light emitting device 15, two sixth light emitting devices 16, and one seventh light emitting device 17. The line connecting the center of the fifth light emitting device 15 and the center of the seventh light emitting device 17 intersects the line connecting the centers of the two sixth light emitting devices 16.

[0187] In the main display area A1, the plurality of second light emitting device groups 120 are arranged in an array, and in the same second light emitting device group 120, the fifth light emitting device 15 and the seventh light emitting device 17 can be arranged in a row, and the two sixth light emitting devices 16 can be arranged in a column.

[0188] With the above arrangement, the sawtooth effect between the images displayed by different first light emitting device groups 110 in the auxiliary display area A2 can be improved, the difference between the image displayed by the auxiliary display area A2 and the image displayed by the main display area A1 is reduced, the display uniformity of the display panel 100 is improved, and the display effect of the display device 1000 is improved.

[0189] In some examples, as shown in FIG. 15, the area of the orthographic projection of the light emitting part 101 in the third light emitting device 13 on the adjusting functional layer 20 is equal to the area of the orthographic projection of the light emitting part 101 in the fifth light emitting device 15 on the adjusting functional layer 20. The area of the orthographic projection of the light emitting part 101 in the fourth light emitting device 14 on the adjusting functional layer 20 is equal to the area of the orthographic projection of the light emitting part 101 in the seventh light emitting device 17 on the adjusting functional layer 20. The area of the orthographic projection of the light emitting part 101 in the second light emitting device 12 on the adjusting functional layer 20 is twice the area of the orthographic projection of the light emitting part 101 in the sixth light emitting device 16 on the adjusting functional layer 20.

[0190] In this way, the area of the light emitting part 101 in the first light emitting device group 110 emitting red light can be ensured to be equal to the area of the light emitting part 101 in the second light emitting device group 120 emitting red light, the area of the light emitting part 101 in the first light emitting device group 110 emitting green light can be ensured to be equal to the area of the light emitting part 101 in the second light emitting device group 120 emitting green light, and the area of the light emitting part 101 in the first light emitting device group 110 emitting blue light can be ensured to be equal to the area of the light emitting part 101 in the second light emitting device group 120 emitting blue light, so that the difference between the color displayed by the sub-display area A2 and the color displayed by the main display area A1 is smaller when the same color is displayed by the sub-display area A2 and the main display area A1, which is beneficial to improving the color deviation between the main display area A1 and the sub-display area A2 and improving the display uniformity of the display panel 100.

[0191] In another implementation, as shown in FIG. 19, the sub-display area A2' of the display panel includes a plurality of first light emitting device groups 110', and each first light emitting device group 110' includes one red light emitting device R1, two green third light emitting devices G1, and one blue light emitting device B1. The main display area A1' includes a plurality of second light emitting device groups 120', and each second light emitting device group includes one red light emitting device R2, one blue light emitting device B2, and two green light emitting devices G2. When displaying an image, the light emitting devices can display by borrowing or sharing the light emitted by the adjacent light emitting devices (which can also be referred to as pixel borrowing), so as to improve the pixel density. Since the pixel density of the main display area A1' is greater than the pixel density of the sub-display area A2', the light emitting devices in the sub-display area A2' have more obvious jaggy feeling of the corresponding displayed image in the case of pixel borrowing, and the display effect of the display panel is poor.

[0192] In another implementation, the above-mentioned solution in another implementation is improved. As shown in FIG. 20, the sub-display area A2' of the display panel includes a plurality of first light emitting device groups 110', and each first light emitting device group 110' includes one red light emitting device R1, one green light emitting device G1, and one blue light emitting device B1. The main display area A1' includes a plurality of second light emitting device groups 120', and each second light emitting device group 120' includes one red light emitting device R2, one blue light emitting device B2, and two green light emitting devices G2. The area of the normal projection of the light emitting part of the green light emitting device G1 in the first light emitting device group 110' is 2 times the area of the normal projection of the light emitting part of one green light emitting device G2 in the second light emitting device group 120', the area of the normal projection of the light emitting part of the red light emitting device R1 in the first light emitting device group 110' is equal to the area of the normal projection of the light emitting part of the red light emitting device R2 in the second light emitting device group 120', and the area of the normal projection of the light emitting part of the blue light emitting device B1 in the first light emitting device group 110' is equal to the area of the normal projection of the light emitting part of the blue light emitting device B2 in the second light emitting device group 120'. Thus, based on the arrangement of the light emitting devices in the sub-display area, the sub-display area does not use the above-mentioned pixel borrowing method to improve the pixel density in the process of image display of the display panel, thereby relieving the sawtooth phenomenon of the image displayed by the sub-display area.

[0193] However, due to the large normal projection size of the light emitting part of the green light emitting device G1 in the first light emitting device group 110', the light blocking layer has a weak shielding effect on the light emitted by the light emitting part, so that there are relatively more green light rays with large viewing angles emitted by the light emitting part in the sub-display area A2', the light blocking layer has a strong shielding effect on the red light emitted by the red light emitting device R1, there are fewer red light rays with large viewing angles emitted by the red light emitting device R1 in the sub-display area A2', and the light blocking layer also has a strong shielding effect on the blue light emitted by the blue light emitting device B1, there are also fewer blue light rays with large viewing angles emitted by the blue light emitting device B1 in the sub-display area A2'. Thus, in the case of synthesizing white light rays from red light rays, green light rays, and blue light rays in the sub-display area A2', the brightness of the green light rays with large viewing angles is large, so that the synthesized white light rays are greenish, the image displayed by the sub-display area A2' is severely color cast, and there is a significant difference between the images displayed by the sub-display area A2' and the main display area A1', which severely affects the display effect of the display panel.

[0194] In the embodiments of the present disclosure, the adjusting part 102 is arranged in the third light emitting device 13 and the fourth light emitting device 14 in the sub-display area A2, and the size of the outer contour of the normal projection of the light emitting part 101 thereof can be increased by the adjusting part 102, thereby improving the color cast phenomenon of the image displayed by the sub-display area A2, effectively reducing the difference between the images displayed by the sub-display area A2 and the main display area A1, and improving the display effect of the display panel 100.

[0195] In addition, in order to explore the color cast of the image displayed by the display panel in the embodiment of the present disclosure, the main display area of the display panel, the sub-display area of the display panel in the above-mentioned another implementation manner, and the sub-display area of the display panel in the above-mentioned embodiment of the present disclosure all display white images, and the color cast thereof is simulated to obtain the corresponding chromaticity diagram, as shown in FIG. 21.

[0196] In FIG. 21, 0° represents a viewing angle of 0°, that is, a normal viewing angle. In the chromaticity curve of the main display area, each point represents a different viewing angle. Specifically, from right to left, each point is in turn the chromaticity at a viewing angle of 0°, the chromaticity at a viewing angle of 15°, the chromaticity at a viewing angle of 30°, the chromaticity at a viewing angle of 45°, the chromaticity at a viewing angle of 60°, and the chromaticity at a viewing angle of 75°. The chromaticity curve of the first sub-display area represents the chromaticity curve of the sub-display area of the display panel in one implementation manner, and the chromaticity curve of the second sub-display area represents the chromaticity curve of the sub-display area of the display panel in the embodiment of the present disclosure. The three oval dashed circles represent three different color cast values, 2.5, 3.5, and 4.5. The closer the chromaticity curve is to the dashed circle 4.5, the greater the color cast degree, and the closer the chromaticity curve is to the dashed circle 2.5, the smaller the color cast degree.

[0197] As can be seen from FIG. 21, as the viewing angle increases, the color cast degree of the image displayed by the display panel increases. Among them, at a larger viewing angle, the color cast degree of the image displayed by the first sub-display area is the largest. The chromaticity value of the image displayed by the second sub-display area (that is, the sub-display area of the display panel in the embodiment of the present disclosure) approaches that of the image displayed by the main display area, the color cast degree of the image displayed by the second sub-display area is smaller, and the color cast of the image displayed by the second sub-display area is consistent with that of the image displayed by the main display area. It can be seen that the display panel 100 provided by the embodiment of the present disclosure improves the color cast phenomenon of the image displayed by the sub-display area A2, and makes the color cast difference between the images displayed by the sub-display area A2 and the main display area A1 smaller, alleviates the display difference between the main display area A1 and the sub-display area A2, and improves the display uniformity of the display panel 100 and the display device 1000.

[0198] In other embodiments, as shown in FIGS. 23-27, the adjustment function layer 20 has functions including reflection or refraction, and the structure of the adjustment function layer 20 is different from that in some of the above-mentioned embodiments.

[0199] It can be understood that FIG. 23 can be a sectional view structure diagram of FIG. 22 cut along FF', FIG. 24 can be another sectional view structure diagram of FIG. 22 cut along FF', FIG. 25 can be a sectional view structure diagram of FIG. 22 cut along GG', FIG. 26 can be another sectional view structure diagram of FIG. 22 cut along GG', and FIG. 27 can be another sectional view structure diagram of FIG. 22 cut along GG'.

[0200] In the embodiment, as shown in FIG. 22, the plurality of light emitting devices 10 includes a plurality of third light emitting device groups 130. The third light emitting device group 130 includes at least one second light emitting device 12, at least one third light emitting device 13, and at least one fourth light emitting device 14.

[0201] For example, the number of the second light emitting devices 12 included in the third light emitting device group 130 can be multiple, the number of the third light emitting devices 13 included in the third light emitting device group 130 can be multiple, and the number of the fourth light emitting devices 14 included in the third light emitting device group 130 can be multiple.

[0202] For example, the second light emitting device 12 emits blue light, the third light emitting device 13 emits red light, and the fourth light emitting device 14 emits green light.

[0203] As shown in FIG. 23, in the above-mentioned defining layer 60, the first opening 61 includes a first sub-opening 611 and a second sub-opening 612. A part of the third light emitting device 13 is located in the first sub-opening 611, and a part of the fourth light emitting device 14 is located in the second sub-opening 612. A part of the second light emitting device 12 is located in the second opening 62.

[0204] As shown in FIG. 23, in the same third light emitting device group 130, the ratio of the sum of the areas of the first sub-opening 611 corresponding to each third light emitting device 13, the sum of the areas of the second opening 62 corresponding to each second light emitting device 12, and the sum of the areas of the second sub-opening 612 directly opposite to each fourth light emitting device 14 is 1:1:1.

[0205] Therefore, the convergence of the first sub-opening 611 emitting red light, the second opening 62 emitting blue light, and the second sub-opening 612 emitting green light by the adjusting functional layer 20 can be made consistent, the light brightness of the red light, the green light, and the blue light under the same small viewing angle emitted by the adjusting functional layer 20 can be made consistent, and the color deviation phenomenon of the image displayed by the display panel 100 under the small viewing angle can be alleviated.

[0206] In some examples, as shown in FIG. 22, in the same third light emitting device group 130, the ratio of the sum of the areas of the orthographic projection of the light emitting part 101 in the at least one third light emitting device 13 on the adjusting functional layer 20, the sum of the areas of the orthographic projection of the light emitting part 101 in the at least one fourth light emitting device 14 on the adjusting functional layer 20, and the sum of the areas of the orthographic projection of the light emitting part 101 in the at least one second light emitting device 12 on the adjusting functional layer 20 is 1:1:1.8.

[0207] Thus, the light-emitting life of the light-emitting devices 10 emitting light rays of different colors in the same third light-emitting device group 130 can be made to tend to be consistent, and the light-emitting life is long, which is conducive to improving the service life of the display panel 100 and the display device 1000.

[0208] In some examples, as shown in FIG. 22, the third light-emitting device group 130 includes one first light-emitting device 11, one third light-emitting device 13, and one second light-emitting device 12. The line between the center of the second light-emitting device 12, the center of the third light-emitting device 13, and the center of the fourth light-emitting device 14 is a triangle.

[0209] The plurality of third light-emitting device groups 130 are arranged in an array.

[0210] The arrangement of the plurality of light-emitting devices 10 described above can be referred to as Real RGB arrangement or similar Real RGB arrangement.

[0211] Thus, it can be avoided to realize display by pixel borrowing between adjacent light-emitting devices 10, and the sawtooth feeling of the display panel 100 displayed picture can be alleviated.

[0212] In some examples, light rays can be emitted through the adjustment functional layer 20 described above. As shown in FIG. 23, the adjustment functional layer 20 includes a first light adjustment layer 23 and a second light adjustment layer 24 which are stacked.

[0213] The refractive index of the first light adjustment layer 23 is less than the refractive index of the second light adjustment layer 24.

[0214] As shown in FIG. 23, the first light adjustment layer 23 includes a plurality of fourth openings 231, and the included angle a1 between the side wall of the fourth opening 231 and the plane where the planar layer 50 is located is an acute angle. For example, the cross-sectional view of the fourth opening 231 along the thickness direction of the substrate 30 can be an inverted trapezoid.

[0215] Part of the second light adjustment layer 24 is located in the fourth opening 231, and another part of the second light adjustment layer 24 is located on the side of the first light adjustment layer 23 away from the planar layer 50. Among the plurality of fourth openings 231, a part of the fourth openings 231 are arranged one-to-one corresponding to the plurality of first openings 61, and the orthographic projection of the first opening 61 on the planar layer 50 is located within the orthographic projection range of the fourth opening 231 on the planar layer 50. A part of the fourth openings 231 are arranged one-to-one corresponding to the plurality of second openings 62, and the orthographic projection of the second opening 62 on the planar layer 50 is located within the orthographic projection range of the fourth opening 231 on the planar layer 50.

[0216] The light emitted by the light emitting part 101 of the light emitting device 10 can be emitted from the fourth opening 231. Part of the light emitted by the light emitting part 101 of the light emitting device 10, for example, light with a large viewing angle, is incident to the sidewall of the fourth opening 231. Since the included angle α1 between the sidewall and the plane on which the flat layer 50 is located is an acute angle, and the refractive index of the first light adjusting layer 23 is smaller than the refractive index of the second light adjusting layer 24, the part of the light is easily totally reflected on the sidewall and then emitted from the second light adjusting layer 24, so that the emission angle of the part of the light changes from a large viewing angle to a small viewing angle. As a result, more light with a small viewing angle is emitted by the light emitting device 10, and the light emitted by the display panel 100 is more convergent, which is beneficial to improving the light emitting efficiency and display brightness of the light emitting device 10. In addition, since the third light emitting device 13 and the fourth light emitting device 14 are provided with the adjusting part 102, the size of the outer contour of the orthographic projection of the light emitting part 101 of the third light emitting device 13 and the size of the orthographic projection of the light emitting part 101 of the third light emitting device 13 tend to be consistent with the size of the orthographic projection of the light emitting part 101 of the second light emitting device 12, so that the convergent effects of the adjusting functional layer 20 on the light emitted by each light emitting device 10 are similar, thereby making the brightness of light of each color at the same viewing angle (small viewing angle) tend to be consistent, and further improving the color cast phenomenon of the display panel 100.

[0217] In yet another implementation manner, the display panel includes a plurality of third light emitting device groups. The third light emitting device group includes a red light emitting device, a blue light emitting device and a green light emitting device. The adjusting functional layer in the display panel includes the first light adjusting layer and the second light adjusting layer. Part of the light with a large viewing angle emitted by the light emitting device is totally reflected on the sidewall of the fourth opening, so that the light with a large viewing angle becomes light with a small viewing angle, and the amount of light with a small viewing angle emitted by the light emitting device is relatively large. The orthographic projection area of the light emitting part of the blue light emitting device is large, and the amount of light with a small viewing angle emitted by the light emitting part after passing through the adjusting functional layer is relatively large. The orthographic projection area of the light emitting part of the red light emitting device is small, and the amount of light with a large viewing angle emitted by the light emitting part after passing through the adjusting functional layer is relatively small. The orthographic projection area of the light emitting part of the green light emitting device is small, and the amount of light with a large viewing angle emitted by the light emitting part after passing through the adjusting functional layer is relatively small. In the case of synthesizing white light from red light, green light and blue light, the white light synthesized by the display panel is blue, and the color cast of the image displayed by the display panel is serious.

[0218] In the embodiments of the present disclosure, the third light emitting device 13 and the fourth light emitting device 14 include the adjusting part 102, the size of the outer contour of the orthographic projection of the light emitting part 101 is increased by the adjusting part 102, so that the brightness of the light with the same viewing angle emitted by the third light emitting device 13, the fourth light emitting device 14 and the second light emitting device 12 after passing through the adjusting functional layer 20 tends to be consistent, and the convergent effects of the adjusting functional layer 20 on different light emitting devices tend to be consistent, thereby alleviating the color cast phenomenon of the display panel 100.

[0219] In another example, as shown in FIG. 24, the adjusting functional layer 20 includes a first light adjusting layer 23 and a second light adjusting layer 24 arranged in a stack.

[0220] The first light adjusting layer 23 includes a plurality of first light adjusting portions 232 arranged at intervals, and an included angle a2 between a side wall of the first light adjusting portion 232 and a plane on which the flat layer 50 is located is an acute angle. For example, a cross-sectional view of the first light adjusting portion 232 along a thickness direction of the substrate 30 is a right trapezoid.

[0221] Among the plurality of first light adjusting portions 232, a part of the first light adjusting portions 232 are arranged one-to-one corresponding to the plurality of first openings 61, and a normal projection of the first opening 61 on the flat layer 50 is located within a normal projection range of the first light adjusting portion 232 on the flat layer 50. Another part of the first light adjusting portions 232 are arranged one-to-one corresponding to the plurality of second openings 62, and a normal projection of the second opening 62 on the flat layer 50 is located within the normal projection range of the first light adjusting portion 232 on the flat layer 50.

[0222] The second light adjusting layer 24 covers the plurality of first light adjusting portions 232. A refractive index of the first light adjusting layer 23 is greater than a refractive index of the second light adjusting layer 24.

[0223] Therefore, most of the light emitted by the light emitting device 10 is emitted through the first light adjusting portion 232. Part of the light emitted by the light emitting device 10 is incident to the side wall of the first light adjusting portion 232, and since the included angle a2 between the side wall and the plane on which the flat layer 50 is located is an acute angle, and the refractive index of the first light adjusting layer 23 is greater than the refractive index of the second light adjusting layer 24, the part of the light is refracted on the side wall, then is incident to the second light adjusting layer 24 and is emitted. The light emitted through the second light adjusting layer 24 tends to be emitted in a direction perpendicular to the substrate 30, so that the light is converged to light with a smaller viewing angle, and thus the light emitting efficiency of the light emitting device 10 and the display brightness of the display panel 100 can be improved. In addition, since the third light emitting device 13 and the fourth light emitting device 14 are provided with the adjusting portion 102, the above-mentioned arrangement can make the converging effect of the adjusting functional layer 20 on the light emitted by each light emitting device 10 similar, so that the light emitting brightness of light of each color at the same viewing angle tends to be consistent, and thus the color cast phenomenon of the display panel 100 can be improved.

[0224] Based on the above two examples, the adjusting functional layer 20 includes the first light adjusting layer 23 and the second light adjusting layer 24, and the adjusting functional layer 20 further includes a color film layer arranged between the plurality of light emitting devices 10 and the first light adjusting layer 23.

[0225] As shown in FIG. 25 and FIG. 26, the color film layer includes a light shielding layer 21 and a plurality of color films 22 arranged at intervals. The light shielding layer 21 includes a plurality of third openings 211, and the color film 22 is located at least in the third opening 211.

[0226] For example, the light shielding layer 21 can be a black matrix. The material of the black matrix includes a light-proof material. The light shielding layer 21 includes a plurality of third openings 211. The top view shape of the light shielding layer 21 can be substantially a mesh structure, and the third openings 211 constitute the mesh holes of the mesh structure.

[0227] For example, the color filter layer 22 is located in the third openings 211. For another example, a part of the color filter layer 22 is located in the third openings 211, and another part is located on the light shielding layer 21.

[0228] Among the plurality of third openings 211, a part of the third openings 211 are arranged one-to-one with the plurality of first openings 61, and the orthographic projection of the first openings 61 on the flat layer 50 is located within the orthographic projection range of the third openings 211 on the flat layer 50. Another part of the third openings 211 are arranged one-to-one with the plurality of second openings 62, and the orthographic projection of the second openings 62 on the flat layer 50 is located within the orthographic projection range of the third openings 211 on the flat layer 50.

[0229] As shown in FIG. 25, the first light adjusting layer 23 includes a plurality of fourth openings 231, and the plurality of fourth openings 231 are arranged one-to-one with the plurality of third openings 211, and the orthographic projection of the third openings 211 on the substrate 30 is located within the orthographic projection range of the fourth openings 231 on the substrate 30. The light emitted by the light emitting device 10 passes through the first opening 61 or the second opening 62, and then passes through the fourth opening 231 to exit.

[0230] As shown in FIG. 26, the first light adjusting layer 23 includes a plurality of first light adjusting portions 232, and the plurality of first light adjusting portions 232 are arranged one-to-one with the plurality of third openings 211, and the orthographic projection of the third openings 211 on the substrate 30 is located within the orthographic projection range of the first light adjusting portions 232 on the substrate 30. The light emitted by the light emitting device 10 passes through the first opening 61 or the second opening 62, and then passes through the first light adjusting portion 232 to exit.

[0231] Therefore, the color filter layer can be used to adjust the luminance of the light emitted by different light emitting devices 10 with a larger viewing angle, and the first light adjusting layer 23 and the second light adjusting layer 24 can be used to adjust the luminance of the light emitted by different light emitting devices 10 with a smaller viewing angle, so that the luminance difference of the light emitted by each light emitting device 10 from the adjusting functional layer with the same viewing angle is smaller, thereby effectively improving the color deviation phenomenon of the display panel 100.

[0232] In yet another example, as shown in FIG. 27, the adjusting functional layer 20 includes a third light adjusting layer 25 and a color filter layer which are stacked.

[0233] The third light-adjusting layer 25 includes a plurality of third light-adjusting portions 251 arranged at intervals. An included angle a3 between a side wall of the third light-adjusting portion 251 and a plane on which the planar layer 50 is located is an acute angle. For example, a sectional view of the third light-adjusting portion 251 along a thickness direction of the substrate 30 is a right trapezoid.

[0234] The color film layer includes the light-shielding layer 21 and a plurality of color films 22 arranged at intervals.

[0235] The material and structure of the light-shielding layer 21 can refer to the description in some embodiments described above, which will not be repeated here.

[0236] The light-shielding layer 21 includes a plurality of third openings 211, and the plurality of third openings 211 are arranged one by one with the plurality of third light-adjusting portions 251. The third light-adjusting portion 251 is located in the third opening 211, and there is a gap 212 between a side wall of the third light-adjusting portion 251 and a side wall of the third opening 211.

[0237] For example, a center of a projection of the third light-adjusting portion 251 on the substrate 30 coincides with a center of a projection of the third opening 211 on the substrate 30. A shape of a projection of the gap 212 on the substrate 30 is annular.

[0238] For example, a thickness of the third light-adjusting portion 251 is greater than or equal to a thickness of the light-shielding layer 21.

[0239] The color film 22 is located at least in the gap 212 and on a side of the third light-adjusting portion 251 away from the substrate 30.

[0240] For example, the color film 22 fills in the gap 212 and covers the third light-adjusting portion 251 and the light-shielding layer 21.

[0241] One first opening 61 or one second opening 62 is arranged corresponding to one third light-adjusting portion 251 and one third opening 211.

[0242] A projection of the first opening 61 on the planar layer 50 is located within a projection range of the third opening 211 on the planar layer 50 and within a projection range of the third light-adjusting portion 251 on the planar layer 50. A refractive index of the color film 22 is less than a refractive index of the third light-adjusting portion 251.

[0243] Thus, the light emitted by the light emitting part 101 of the light emitting device 10 exits after passing through the third light adjusting part 251 and the third opening 211. Part of the light is incident on the side surface of the third light adjusting part 251, refracted to the color filter layer at the side surface, and exits in a direction perpendicular to the substrate 30, so that the light emitting device 10 exits more light with a small viewing angle after passing through the adjusting functional layer 20, thereby improving the light emitting efficiency and brightness of the light emitting device 10. The color purity of the exiting light can be improved by the color filter layer. In addition, the above arrangement reduces the number of film layers in the display panel 100, which is conducive to reducing the thickness of the display panel 100 and realizing the lightweight design of the display panel 100 and the display device 1000.

[0244] For example, as shown in FIGS. 12 and 23, the display panel 100 further includes an encapsulation layer 70 between the plurality of light emitting devices 10 and the adjusting functional layer 20.

[0245] For example, the encapsulation layer 70 can be a thin film encapsulation layer. The thin film encapsulation layer can encapsulate the light emitting device 10, so that the light emitting device 10 is isolated from water vapor and the like in the external environment, thereby improving the light emitting performance and service life of the light emitting device 10 and avoiding oxidation of the light emitting device 10 in the case of water vapor intrusion.

[0246] The encapsulation layer 70 has a certain light transmittance, and the light emitted by the light emitting device 10 can exit through the encapsulation layer 70. The encapsulation layer 70 includes an inorganic encapsulation layer and an organic encapsulation layer stacked.

[0247] For example, the material of the inorganic encapsulation layer can be an inorganic material, and the inorganic encapsulation layer can be prepared by a vapor deposition process. The material of the organic encapsulation layer can be an organic material, and the organic encapsulation layer can be formed by an inkjet printing process. The material of the inorganic encapsulation layer can be an optical clear (OC) adhesive.

[0248] It can be understood that the organic encapsulation layer is mainly used for planarization and stress relief, and the first inorganic encapsulation layer and the second inorganic encapsulation layer in the inorganic encapsulation layer are mainly used for blocking water and oxygen and wrapping the organic encapsulation layer between the first inorganic encapsulation layer and the second inorganic encapsulation layer.

[0249] In some embodiments, as shown in FIGS. 12 and 23, the display panel 100 further includes a touch layer 80 between the plurality of light emitting devices 10 and the adjusting functional layer 20.

[0250] The touch layer 80 is between the encapsulation layer 70 and the adjusting functional layer 20.

[0251] The touch layer 80 includes a plurality of touch electrodes for realizing a touch function of the display panel 100.

[0252] The touch layer 80 can be prepared on the packaging layer 70 by using a flexible multi-layer structure (FMLOC) process. In this way, the thickness of the display panel 100 and the display device 1000 can be small, which is beneficial to the thin design of the display panel 100 and the display device 1000.

[0253] The above merely provides a specific implementation of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art who thinks of changes or replacements within the technical range disclosed by the present disclosure should be covered within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be subject to the protection scope of the claims.

Claims

1. A display panel, comprising a plurality of light emitting devices and an adjustment functional layer located on a light emitting side of the plurality of light emitting devices; the plurality of light emitting devices have light emitting portions for emitting light; the adjustment functional layer is configured to converge light emitted by each of the light emitting portions and emit the converged light; the light emitting devices comprise first light emitting devices and second light emitting devices that respectively emit light of different colors; an area of a normal projection of the light emitting portion of the first light emitting device on the adjustment functional layer is smaller than an area of a normal projection of the light emitting portion of the second light emitting device on the adjustment functional layer; the first light emitting device further has an adjusting portion, and a normal projection of the light emitting portion of the first light emitting device on the adjustment functional layer surrounds a normal projection of the adjusting portion on the adjustment functional layer; the adjusting portion does not emit light; a shape of a normal projection of the first light emitting device on the adjustment functional layer is a central symmetric shape; a shape of an outer contour of the normal projection of the light emitting portion on the adjustment functional layer is the same as a shape of an outer contour of the normal projection of the adjusting portion on the adjustment functional layer; a shape of a normal projection of the adjusting portion on the adjustment functional layer is a central symmetric shape; the shape of the normal projection of the adjusting portion on the adjustment functional layer comprises a square or a circle; a center of the normal projection of the adjusting portion on the adjustment functional layer coincides with a center of the normal projection of the light emitting portion on the adjustment functional layer; the display panel comprises a substrate and a planar layer that are sequentially stacked; the plurality of light emitting devices are located between the planar layer and the adjustment functional layer; the planar layer has a plurality of grooves extending along a thickness direction of the planar layer; the adjusting portion is located in the groove, and the light emitting portion is located on a side of the planar layer away from the substrate, and a distance between the adjusting portion and the substrate is smaller than a distance between the light emitting portion and the substrate; a depth of the groove is greater than or equal to a thickness of the adjusting portion; the light emitting device comprises a first electrode, a light emitting layer and a second electrode that are sequentially stacked on the planar layer; the first electrode of the first light emitting device comprises a first sub-portion and a second sub-portion that are disconnected; the first sub-portion is located in the groove and constitutes a part of the adjusting portion; the second sub-portion is located outside the groove and constitutes a part of the light emitting portion; the display panel further comprises a boundary layer located between the planar layer and the adjustment functional layer; the boundary layer comprises a plurality of first openings and a plurality of second openings; the groove is in communication with the first opening, and a normal projection of the groove on the substrate is located within a range of a normal projection of the first opening on the substrate; a part of the first light emitting device is located in the first opening and the corresponding groove; a part of the second light emitting device is located in the second opening; the adjustment functional layer comprises a light shielding layer and a plurality of color filters; the light shielding layer comprises a plurality of third openings, and the color filters are located at least in the third openings; a normal projection of one of the first openings on the substrate is located within a range of a normal projection of one of the third openings on the substrate. ​ ​ ​ 2. The display panel of claim 1, wherein, ​ 3. The display panel of claim 1 or 2, wherein, ​ 4. The display panel according to any one of claims 1 to 3, wherein ​ 5. The display panel of claim 4, wherein, ​ 6. The display panel according to any one of claims 1 to 5, wherein ​ 7. The display panel according to any one of claims 1 to 6, wherein ​ ​ 8. The display panel of claim 7, wherein, ​ 9. The display panel of claim 7 or 8, wherein, ​ ​ 10. The display panel according to any one of claims 7 to 9, wherein, ​ ​ ​ ​ 11. The display panel of claim 10, wherein, The first light emitting device comprises a third light emitting device and a fourth light emitting device emitting light rays of different colors; The display panel comprises a main display area and a sub-display area; the pixel density of the sub-display area is less than that of the main display area; The second light emitting device, the third light emitting device and the fourth light emitting device are located in the sub-display area; The light emitting device further comprises a fifth light emitting device, a sixth light emitting device and a seventh light emitting device located in the main display area; the color of the light rays emitted by the second light emitting device is the same as that of the light rays emitted by the sixth light emitting device, the color of the light rays emitted by the third light emitting device is the same as that of the light rays emitted by the fifth light emitting device, and the color of the light rays emitted by the fourth light emitting device is the same as that of the light rays emitted by the seventh light emitting device; The plurality of light emitting devices in the sub-display area comprises a plurality of first light emitting device groups; the first light emitting device group comprises at least one second light emitting device, at least one third light emitting device and at least one fourth light emitting device adjacent to each other; The plurality of light emitting devices in the main display area comprises a plurality of second light emitting device groups; the second light emitting device group comprises at least one fifth light emitting device, at least one sixth light emitting device and at least one seventh light emitting device adjacent to each other; The ratio of the sum of the areas of the orthographic projections of the light emitting parts of each third light emitting device in the same first light emitting device group on the adjustment functional layer, the sum of the areas of the orthographic projections of the light emitting parts of each second light emitting device on the adjustment functional layer, and the sum of the areas of the orthographic projections of the light emitting parts of each fourth light emitting device on the adjustment functional layer, is equal to the ratio of the sum of the areas of the orthographic projections of the light emitting parts of each fifth light emitting device in the same second light emitting device group on the adjustment functional layer, the sum of the areas of the orthographic projections of the light emitting parts of each sixth light emitting device on the adjustment functional layer, and the sum of the areas of the orthographic projections of the light emitting parts of each seventh light emitting device on the adjustment functional layer.

12. The display panel of claim 11, wherein, The arrangement density of the plurality of light emitting devices in the first light emitting device group is less than or equal to the arrangement density of the plurality of light emitting devices in the second light emitting device group.

13. The display panel of claim 11 or 12, wherein, In the third light emitting device, the area of the light emitting part is equal to the area of the adjustment part; in the fourth light emitting device, the area of the light emitting part is equal to the area of the adjustment part.

14. The display panel according to any one of claims 11 to 13, wherein, The ratio of the sum of the areas of the orthographic projections of the light emitting parts of each third light emitting device in the same first light emitting device group on the adjustment functional layer, the sum of the areas of the orthographic projections of the light emitting parts of each second light emitting device on the adjustment functional layer, and the sum of the areas of the orthographic projections of the light emitting parts of each fourth light emitting device on the adjustment functional layer is 1:2:1.

8.

15. The display panel according to any one of claims 11 to 14, wherein, The plurality of first openings comprises a plurality of first sub-openings and a plurality of second sub-openings; a part of the third light emitting device is located in the first sub-opening, and a part of the fourth light emitting device is located in the second sub-opening; The ratio of the sum of the areas of the first sub-openings corresponding to each of the third light emitting devices, the sum of the areas of the second openings corresponding to each of the second light emitting devices, and the sum of the areas of the second sub-openings directly opposite to each of the fourth light emitting devices in the same third light emitting device group is 1:1:1.

8.

16. The display panel according to any one of claims 11 to 15, wherein, The first light emitting device group comprises one second light emitting device, one third light emitting device, and one fourth light emitting device; the line connecting the center of the one second light emitting device, the center of the one third light emitting device, and the center of the one fourth light emitting device forms a triangle. The second light emitting device group comprises one fifth light emitting device, two sixth light emitting devices, and one seventh light emitting device; the line connecting the center of the one fifth light emitting device and the center of the one seventh light emitting device intersects the line connecting the centers of the two sixth light emitting devices.

17. The display panel of claim 16, wherein, The area of the orthographic projection of the light emitting part in the third light emitting device on the adjustment functional layer is equal to the area of the orthographic projection of the light emitting part in the fifth light emitting device on the adjustment functional layer; The area of the orthographic projection of the light emitting part in the fourth light emitting device on the adjustment functional layer is equal to the area of the orthographic projection of the light emitting part in the seventh light emitting device on the adjustment functional layer; The area of the orthographic projection of the light emitting part in the second light emitting device on the adjustment functional layer is twice the area of the orthographic projection of the light emitting part in the sixth light emitting device on the adjustment functional layer.

18. The display panel according to any one of claims 11 to 17, wherein, The second light emitting device emits green light, the third light emitting device emits red light, and the fourth light emitting device emits blue light.

19. The display panel according to any one of claims 7 to 9, wherein, The first light emitting device comprises third light emitting devices and fourth light emitting devices emitting different color light; the plurality of light emitting devices comprises a plurality of third light emitting device groups; the third light emitting device group comprises at least one second light emitting device, at least one third light emitting device, and at least one fourth light emitting device; The display panel further comprises a boundary layer; the boundary layer is located between the planar layer and the adjustment functional layer; The boundary layer comprises a plurality of first openings and a plurality of second openings; the recess communicates with the first openings, and the orthographic projection of the recess on the substrate is located within the orthographic projection range of the first openings on the substrate; The first openings comprise first sub-openings and second sub-openings; a part of the third light emitting device is located in the first sub-openings, and a part of the fourth light emitting device is located in the second sub-openings; A part of the second light emitting device is located in the second openings; The ratio of the sum of the areas of the first sub-openings corresponding to each of the third light emitting devices, the sum of the areas of the second openings corresponding to each of the second light emitting devices, and the sum of the areas of the second sub-openings directly opposite to each of the fourth light emitting devices in the same third light emitting device group is 1:1:

1.

20. The display panel of claim 19, wherein, The ratio of the sum of the areas of the orthographic projections of the light emitting parts of the at least one third light emitting device on the adjusting functional layer, the sum of the areas of the orthographic projections of the light emitting parts of the at least one fourth light emitting device on the adjusting functional layer, and the sum of the areas of the orthographic projections of the light emitting parts of the at least one second light emitting device on the adjusting functional layer is 1:1:1.

8.

21. The display panel of claim 19 or 20, wherein, The third light emitting device group comprises one first light emitting device, one third light emitting device, and one second light emitting device; the line between the center of the one second light emitting device, the center of the one third light emitting device, and the center of the one fourth light emitting device forms a triangle.

22. The display panel of any one of claims 19-21, wherein, The adjusting functional layer comprises a first light adjusting layer and a second light adjusting layer arranged in a stack; The refractive index of the first light adjusting layer is smaller than the refractive index of the second light adjusting layer; the first light adjusting layer comprises a plurality of fourth openings, the included angle between the sidewall of the fourth opening and the plane where the flat layer is located is an acute angle; a part of the second light adjusting layer is located in the fourth opening, and another part of the second light adjusting layer is located on the side of the first light adjusting layer away from the flat layer; The orthographic projection of the first opening on the flat layer is located within the orthographic projection range of the fourth opening on the flat layer.

23. The display panel of any one of claims 19-21, wherein, The adjusting functional layer comprises a first light adjusting layer and a second light adjusting layer arranged in a stack; The refractive index of the first light adjusting layer is greater than the refractive index of the second light adjusting layer; the first light adjusting layer comprises a plurality of first light adjusting parts arranged at intervals, the included angle between the sidewall of the first light adjusting part and the plane where the flat layer is located is an acute angle, and the second light adjusting layer covers a plurality of the first light adjusting parts; the orthographic projection of the first opening on the flat layer is located within the orthographic projection range of the first light adjusting part on the flat layer.

24. The display panel of claim 22 or 23, wherein, The adjusting functional layer further comprises a color film layer arranged between the plurality of light emitting devices and the first light adjusting layer; The color film layer comprises a light shielding layer and a plurality of color films arranged at intervals; the light shielding layer comprises a plurality of third openings, and the color film is located at least in the third opening; the orthographic projection of the first opening on the flat layer is located within the orthographic projection range of the third opening on the flat layer.

25. The display panel of any one of claims 19-21, wherein, The adjusting functional layer comprises a third light adjusting layer and a color film layer arranged in a stack; The third light adjusting layer comprises a plurality of third light adjusting parts arranged at intervals; the included angle between the sidewall of the third light adjusting part and the plane where the flat layer is located is an acute angle; The color film layer comprises a light shielding layer and a plurality of color films arranged at intervals; the light shielding layer comprises a plurality of third openings, the third light adjusting part is located in the third opening, and there is a gap between the sidewall of the third light adjusting part and the sidewall of the third opening; the color film is located at least in the gap and on the side of the third light adjusting part away from the substrate; The orthographic projection of the first opening on the flat layer is located within the orthographic projection range of the third opening on the flat layer and within the orthographic projection range of the third light adjusting part on the flat layer; the refractive index of the color film is smaller than the refractive index of the third light adjusting part.

26. The display panel of any one of claims 19-25, wherein, The second light emitting device emits blue light, the third light emitting device emits red light, and the fourth light emitting device emits green light.

27. A display device comprising the display panel according to any one of claims 1 to 26, and an optical element located on a non-light-emitting side of the sub-display region of the display panel.

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