Display panel and display device

Abstract

The invention relates to a display panel and a display device, and relates to the technical field of display. The display panel comprises a driving backboard and a light-emitting device. The light-emitting devices comprise a first light-emitting device, a second light-emitting device and a third light-emitting device which are different in light-emitting color; the light-emitting device is divided into a plurality of light-emitting units, and one light-emitting unit comprises a first light-emitting device, a second light-emitting device and a third light-emitting device; the outline of the orthographic projection of the light-emitting devices on the driving back plate is a polygon, and the area of the orthographic projection of the first light-emitting device on the driving back plate is larger than that of the orthographic projection of the second light-emitting device and the third light-emitting device on the driving back plate; the first light-emitting devices are at least partially shrunk in the column direction; in one light-emitting unit, the height of the first light-emitting device in the column direction is not less than the sum of the heights of the second light-emitting device and the third light-emitting device in the column direction; a width of the first light emitting device in the row direction is greater than widths of the second light emitting device and the third light emitting device in the row direction.

Description

Technical Field

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

[0002] At present, self-luminous display panels using organic light-emitting diodes (OLEDs) as light-emitting devices have been widely used. However, due to the large difference in luminous efficiency of light-emitting materials of different colors, the uniformity of the lifespan of light-emitting devices of different colors also varies greatly.

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

[0004] The present disclosure provides a display panel and a display device, which can improve the uniformity of the lifespan of light-emitting devices of different colors.

[0005] According to one aspect of the present disclosure, there is provided a display panel, comprising:

[0006] Driver backplane;

[0007] A plurality of light-emitting devices are provided on one side of the driving backplane; the light-emitting devices include a first light-emitting device, a second light-emitting device, and a third light-emitting device having different luminous colors; the light-emitting devices are divided into a plurality of light-emitting units distributed along row directions and column directions, and each light-emitting unit includes the first light-emitting device, the second light-emitting device, and the third light-emitting device;

[0008] The outline of the orthographic projection of the light-emitting device on the driving backplane is a polygon, and the area of the orthographic projection of the first light-emitting device on the driving backplane is larger than the area of the orthographic projection of the second light-emitting device and the third light-emitting device on the driving backplane; the first light-emitting device is at least partially contracted along the column direction;

[0009] In one of the light-emitting units, the height of the first light-emitting device in the column direction is not less than the sum of the heights of the second light-emitting device and the third light-emitting device in the column direction; the width of the first light-emitting device in the row direction is greater than the width of the second light-emitting device and the third light-emitting device in the row direction.

[0010] In an exemplary embodiment of the present disclosure, the first light emitting device includes two light emitting portions connected to each other along the column direction, and the two light emitting portions shrink toward each other or away from each other along the column direction.

[0011] In an exemplary embodiment of the present disclosure, the two light-emitting portions are symmetric about a row symmetry axis extending along the row direction and symmetric about a column symmetry axis extending along the column direction.

[0012] In an exemplary embodiment of the present disclosure, one light-emitting unit includes one first light-emitting device, two second light-emitting devices, and two third light-emitting devices; the two second light-emitting devices are symmetrically arranged on both sides of the first light-emitting device along the row direction, and the two third light-emitting devices are symmetrically arranged on both sides of the first light-emitting device along the row direction;

[0013] Two adjacent light-emitting units in the row direction share the first light-emitting device;

[0014] The second light-emitting device and the third light-emitting device on the same side of the first light-emitting device in one light-emitting unit are symmetric about the row symmetry axis.

[0015] In an exemplary embodiment of the present disclosure, one light-emitting unit includes two first light-emitting devices, one second light-emitting device, and two third light-emitting devices; the two first light-emitting devices are symmetrically arranged on both sides of the second light-emitting device, the two third light-emitting devices are symmetrically arranged on both sides of the second light-emitting device, and the two first light-emitting devices are located between the two third light-emitting devices;

[0016] Two adjacent light-emitting units in the row direction share the second light-emitting device.

[0017] In an exemplary embodiment of the present disclosure, the outline of the orthographic projection of the first light-emitting device on the driving backplane is hexagonal and is surrounded by a first side, a second side, a third side, a fourth side, a fifth side, and a sixth side connected in sequence;

[0018] The first side and the fourth side extend along the row direction and are distributed along the column direction; the second side and the fifth side form a specified angle with the row direction and the column direction, and the specified angle is an acute angle or an obtuse angle; the third side and the sixth side extend along the column direction and are distributed along the row direction;

[0019] The first side and the fourth side are of equal length; the second side and the fifth side are of equal length; the third side and the sixth side are of equal length; the length of the third side and the sixth side is greater than the length of the first side and the fourth side.

[0020] In an exemplary embodiment of the present disclosure, two of the first light-emitting devices, one second light-emitting device, and one third light-emitting device are provided in one light-emitting unit; two of the first light-emitting devices are distributed along the column direction with the second light-emitting device, and the first light-emitting device and the third light-emitting device are distributed along the row direction; the other first light-emitting device and the third light-emitting device are distributed along the column direction, and the first light-emitting device and the second light-emitting device are distributed along the row direction.

[0021] In an exemplary embodiment of the present disclosure, the outlines of the two first light-emitting devices of one light-emitting unit in the positive projection on the driving backplane are trapezoidal, and the small ends of the trapezoids are arranged facing each other along the column direction.

[0022] In an exemplary embodiment of the present disclosure, the positive projections of the second light-emitting device and the third light-emitting device on the driving backplane are triangular.

[0023] According to one aspect of the present disclosure, a display device is provided, including the display panel described in any one of the above.

[0024] In the display panel and the display device of the present disclosure, the area of the positive projection of the first light-emitting device on the driving backplane is larger than the areas of the positive projections of the second light-emitting device and the third light-emitting device on the driving backplane. The deficiency in brightness can be compensated by increasing the area of the light-emitting device with lower luminous efficiency, avoiding increasing the current to improve brightness, thereby preventing the life attenuation caused by the increase in current. Thus, on the premise of ensuring brightness uniformity, the life uniformity of light-emitting devices of different colors can be improved. At the same time, the light-emitting device adopts a polygonal outline, and the first light-emitting device at least partially shrinks along the column direction, so that the width in the row direction changes, providing space for changing the area of the first light-emitting device according to the needs of different display panels. Specifically, the area can be increased by widening the narrower area without expanding the overall outline.

[0025] In addition, the light-emitting unit is the basic unit for arranging the light-emitting devices. Since the areas of light-emitting devices of different colors are different, in order to facilitate the arrangement, the dimensions of the light-emitting devices are limited in the embodiments of the present disclosure, that is, in one light-emitting unit, the height of the first light-emitting device in the column direction is not less than the sum of the heights of the second light-emitting device and the third light-emitting device in the column direction; the width of the first light-emitting device in the row direction is greater than the widths of the second light-emitting device and the third light-emitting device in the row direction; which is beneficial to improving the life uniformity without reducing the resolution.

[0026] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. Description of the Drawings

[0027] The accompanying drawings here are incorporated into the specification and form a part of this specification, showing embodiments consistent with the present disclosure, and are used together with the specification to explain the principles of the present disclosure. Obviously, the accompanying drawings in the following description are only some embodiments of the present disclosure, and those of ordinary skill in the art can obtain other drawings based on these drawings without creative efforts.

[0028] Figure 1 It is a top view of an embodiment of the display panel of the present disclosure.

[0029] Figure 2 It is a partial cross-sectional schematic diagram of an embodiment of the display panel of the present disclosure.

[0030] Figure 3 It is a schematic diagram of a first type of embodiment of the display panel of the present disclosure.

[0031] Figure 4 It is a schematic diagram of a second type of embodiment of the display panel of the present disclosure.

[0032] Figure 5 It is a schematic diagram of a third type of embodiment of the display panel of the present disclosure.

[0033] Figure 6 It is a schematic diagram of a fourth type of embodiment of the display panel of the present disclosure. Detailed Embodiments

[0034] Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in various forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art. Like reference numerals in the drawings denote like or similar structures, and thus their detailed descriptions will be omitted. In addition, the drawings are only schematic illustrations of the present disclosure and are not necessarily drawn to scale.

[0035] The terms "a", "an", "the", "said" and "at least one" are used to denote the presence of one or more elements / components / etc.; the terms "comprising" and "having" are used to denote an open inclusion meaning and mean that there may be additional elements / components / etc. besides the listed elements / components / etc.; the terms "first", "second", "third", etc. are only used as labels and are not a limitation on the quantity of their objects.

[0036] The row direction X and the column direction Y in this document are merely two intersecting directions. For example, the row direction X and the column direction Y are perpendicular to each other. Although the row direction X in the drawings of the present disclosure is horizontal and the column direction Y is vertical, this is not limiting. If the display panel rotates, the actual orientations of the row direction X and the column direction Y may change.

[0037] An embodiment of the present disclosure provides a display panel. As Figure 1 shown, the display panel can be at least divided into a display area AA and a peripheral area WA located outside the display area AA. The peripheral area WA can be a continuous annular area surrounding the display area AA, or can be a discontinuous area surrounding the outside of the display area AA. The display area AA can be used to emit light to display an image, while the peripheral area WA does not emit light.

[0038] As Figure 2 shown, the display panel can include a driving backplane BP and a plurality of light-emitting devices LD disposed on one side of the driving backplane BP, where:

[0039] The driving backplane BP has a driving circuit, and the light-emitting devices LD can be driven to emit light through the driving circuit to display an image. In some embodiments of the present disclosure, the driving backplane BP can include a substrate SU and a circuit layer located on one side of the substrate SU. The substrate SU can be a flat structure, and its material can be a hard material such as glass, or can be a flexible material such as polyimide. At the same time, the substrate SU can be a single-layer or multi-layer structure.

[0040] The circuit layer includes the above-mentioned driving circuit. For example, the driving circuit can include a pixel circuit located in the display area AA and a peripheral circuit located in the peripheral area WA. Among them, the pixel circuit can be a structure such as 7T1C, 8T1C, etc., as long as it can drive the light-emitting device LD to emit light, and its structure is not specifically limited herein. Among them, nTmC means that a pixel circuit includes n thin-film transistors (represented by the letter "T") and m capacitors (represented by the letter "C"). The number of pixel circuits can be the same as the number of light-emitting devices LD, and they are connected to each light-emitting device LD in a one-to-one correspondence. Of course, the same pixel circuit can also be connected to multiple light-emitting devices LD, which is not specifically limited herein. The peripheral circuit is connected to the pixel circuit and is used to input a driving signal to the pixel circuit to control the light-emitting device LD to emit light. The peripheral circuit can include a gate driving circuit and a light-emitting control circuit. Of course, it can also include other circuits, and the specific structure of the peripheral circuit is not specifically limited herein.

[0041] Taking the top-gate thin-film transistor as an example, the circuit layer may include a semiconductor layer, a first gate insulating layer, a first gate layer, a second gate insulating layer, a second gate layer, an interlayer dielectric layer, a first source-drain layer, a first planarization layer, a second source-drain layer, and a second planarization layer, which are sequentially stacked in a direction away from the substrate. Further, the first source-drain layer may be covered by a passivation layer, and the first planarization layer covers the passivation layer. The active layer of each thin-film transistor is located in the semiconductor layer, the gate is located in the gate layer, and the two plates of the capacitor are located in the first gate layer and the second gate layer.

[0042] As Figure 2 shown, the light-emitting device LD may be stacked on the driving backplane BP. For example, the light-emitting device LD is stacked on the surface of the second planarization layer farthest from the substrate and away from the substrate. At the same time, the light-emitting device LD is located in the display area AA, and it may be an OLED (organic light-emitting diode) using an organic light-emitting material. For example, the light-emitting device LD may include a first electrode ANO, a light-emitting layer EML, and a second electrode CAT, which are sequentially stacked in a direction away from the driving backplane BP. By applying an electrical signal to the first electrode ANO and the second electrode CAT, the light-emitting layer EML can be excited to emit light, and the specific light-emitting principle will not be elaborated here.

[0043] The first electrode ANO may serve as an anode, and its material may include conductive materials such as metals and metal oxides. For example, metals such as Ti (titanium), Al (aluminum), Mg (magnesium), Ag (silver), etc. Of course, it may also include metal oxides such as ITO (indium tin oxide).

[0044] The second electrode CAT may serve as a cathode, and its material may include conductive materials such as metals and metal oxides. For example, metals such as Al (aluminum), Mg (magnesium), Ag (silver), Yb (ytterbium), etc.; it may also include metal oxides such as IZO (indium zinc oxide) and ITO; it may also be a metal oxide doped with other elements, such as aluminum-doped zinc oxide (AZO), fluorine-doped tin oxide (FTO), antimony-doped tin oxide (ATO), gallium-doped zinc oxide (GZO), etc. Of course, other elements may also be doped in zinc oxide, or titanium oxide (TiO2) doped with other elements.

[0045] As Figure 2 shown, the light-emitting layer EML may include a hole transport layer HTL, a light-emitting material layer EML, and an electron transport layer ETL, which are sequentially stacked in a direction away from the driving backplane BP. At the same time, the light-emitting layer EML may also include a hole injection layer and an electron injection layer distributed in a direction away from the driving backplane BP; the hole transport layer HTL, the light-emitting material layer EML, and the electron transport layer ETL are distributed between the hole injection layer and the electron injection layer in a direction away from the driving backplane BP.

[0046] In addition, an electron blocking layer can be disposed between the hole transport layer HTL and the light-emitting material layer EML to block electrons; a hole blocking layer can also be disposed between the electron transport layer ETL and the light-emitting material layer EML to block holes.

[0047] As Figure 2 shown, the display panel may further include a pixel definition layer PDL that separates the light-emitting devices LD, and it can be disposed on the same surface of the driving backplane BP as the light-emitting devices LD. For example, the pixel definition layer PDL can be disposed on the surface of the second flat layer away from the substrate together with the first electrode ANO. At the same time, the thickness of the pixel definition layer PDL is greater than the thickness of the first electrode ANO, and the pixel definition layer PDL has pixel openings PH that expose each first electrode ANO. One pixel opening PH exposes one first electrode ANO. At the same time, one pixel opening PH is smaller than the first electrode ANO it exposes, that is, the pixel definition layer PDL extends to the surface of the first electrode ANO away from the driving backplane BP and covers the edge of the first electrode ANO.

[0048] As Figure 2 shown, the light-emitting layer EL and the second electrode CAT are sequentially stacked on the first electrode ANO within the pixel opening PH. The second electrodes CAT of different light-emitting devices LD can be an integral structure or conductively connected.

[0049] In some embodiments, the light-emitting layers EL of different light-emitting devices LD can be a discontinuous structure, so that different light-emitting devices LD can emit different colors of light. Or, only the light-emitting material layer EML in the light-emitting device LD can be a discontinuous structure, that is, the light-emitting material layers EML of the light-emitting layers EL of different light-emitting devices LD are arranged at intervals, while the hole transport layer HTL and the electron transport layer ETL can be continuous integral layer structures, so that each light-emitting device LD can share the hole transport layer HTL and the electron transport layer ETL. In addition, for the light-emitting layer EL with a hole injection layer and an electron injection layer, the hole injection layer and the electron injection layer can also adopt a continuous integral layer structure and be shared by different light-emitting devices LD.

[0050] As Figure 2 shown, each light-emitting device LD is defined by the pixel definition layer PDL. Among them, the range of the pixel opening PH is the range of the light-emitting device LD, that is, the shape and size of the positive projection of the pixel opening PH on the driving backplane BP or the substrate are the shape and size of the positive projection of the light-emitting device LD on the driving backplane BP or the substrate. At the same time, the shape of the pixel opening PH is the shape of its positive projection on the driving backplane BP, the substrate, etc. This shape can be a polygon such as a triangle, a rectangle, a pentagon, a hexagon, etc. In this article, the shape and size of the light-emitting device LD are described with reference to the shape and size of the pixel opening PH. For example, the size of the light-emitting device LD is the size of its pixel opening PH.

[0051] As Figures 3 - 6 shown, the above light-emitting device LD may include a first light-emitting device LD1, a second light-emitting device LD2, and a third light-emitting device LD3 with different light-emitting colors. For example, the first light-emitting device LD1 emits blue light, the second light-emitting device LD2 emits red light, and the third light-emitting device LD3 emits green light. The number of light-emitting devices LD of each color is multiple (more than two).

[0052] Each light-emitting device LD can be divided into multiple light-emitting units LG, and each light-emitting unit LG can be distributed in an array along the row direction X and the column direction Y. One light-emitting unit LG includes multiple light-emitting devices LD, and at least one first light-emitting device, one second light-emitting device, and one third light-emitting device are included in the same light-emitting unit LG.

[0053] As Figure 2 shown, in order to prevent the erosion of external water vapor, the display panel may further include a packaging layer, which can cover each light-emitting device LD. For example, the packaging layer can adopt a thin-film packaging method, which can include a first inorganic layer, an organic layer, and a second inorganic layer. Among them, the first inorganic layer can cover each light-emitting device, that is, the first inorganic layer can cover the surface of the second electrode CAT away from the driving backplane BP; the material of the first inorganic layer can include inorganic insulating materials such as silicon nitride, silicon oxide, silicon oxynitride, and aluminum oxide. The organic layer can be disposed on the surface of the first inorganic layer away from the driving backplane BP, and the boundary of the organic layer can be defined inside the boundary of the first inorganic layer by a dam located in the peripheral area WA. At the same time, the boundary of the positive projection of the organic layer on the driving backplane BP can be located in the peripheral area WA to ensure that the organic layer can cover each light-emitting device LD. The second inorganic layer can cover the organic layer and the first inorganic layer not covered by the organic layer, and can block the intrusion of water and oxygen through the second inorganic layer, and achieve planarization through the organic layer with fluidity before curing. The material of the second inorganic layer can include inorganic insulating materials such as silicon nitride and silicon oxide.

[0054] The inventor found that the materials of the light-emitting material layers EML of light-emitting devices LD with different light-emitting colors are different, and the light-emitting efficiencies are also different, resulting in different brightnesses under the same current. For example, the light-emitting efficiency of the material that emits blue light is less than that of the materials that emit red light and green light, so that the brightness of blue light is less than that of red light and green light. In order to make up for the lack of brightness, the current of the light-emitting device LD with a lower light-emitting efficiency can be increased, but this will cause the light-emitting material to decay faster, resulting in a shorter lifespan of the light-emitting device LD, making the lifespans of light-emitting devices LD of different colors have a large difference, resulting in color deviation in the picture.

[0055] Therefore, the area of the light-emitting device LD with a lower luminous efficiency can be increased to make up for its insufficient brightness, improve the uniformity of the brightness of the light-emitting devices LD of different colors, and without increasing the current, thereby improving the uniformity of the lifespan and reducing the risk of color deviation.

[0056] As Figures 3 - 6 shown, for one of the above-mentioned light-emitting units LG, the luminous efficiency of the first light-emitting device LD1 is lower than that of the second light-emitting device LD2 and the third light-emitting device LD3; the area of the first light-emitting device LD1 on the driving backplane BP can be made larger than the areas of the orthographic projections of the second light-emitting device LD2 and the third light-emitting device LD3 on the driving backplane BP, which can improve the uniformity of the lifespan while improving the brightness uniformity. As for the second light-emitting device LD2 and the third light-emitting device LD3, the areas of their orthographic projections on the driving backplane BP can be the same, or of course, different. For example, the luminous efficiency of the second light-emitting device LD2 is less than that of the third light-emitting device LD3, and the area of the orthographic projection of the second light-emitting device LD2 on the driving backplane BP is larger than the area of the orthographic projection of the third light-emitting device LD3 on the driving backplane BP.

[0057] To facilitate adjusting the area of the first light-emitting device LD1 to meet the requirements of different display panels, its shape can be defined. The first light-emitting device LD1 can be made to shrink at least partially along the column direction Y, that is, the outline of the orthographic projection of the first light-emitting device LD1 on the driving backplane BP shrinks at least partially along the column direction Y, so that its width along the row direction X is not uniform. If it is necessary to increase the first light-emitting device LD1, only the area with a narrower width of the first light-emitting device LD1 in the row direction X needs to be widened, rather than expanding the overall outline of the first light-emitting device LD1.

[0058] Based on the above limitations on the light-emitting device LD, in order not to reduce the resolution and display effect, the arrangement of the light-emitting device LD can be designed. Specifically, taking one light-emitting unit LG as an example, the height h1 of the first light-emitting device LD1 in the column direction Y can be made not less than the sum of the height h2 of the second light-emitting device LD2 in the column direction and the height h3 of the third light-emitting device LD3 in the column direction Y; the width of the first light-emitting device LD1 in the row direction X is greater than the width of the second light-emitting device LD2 in the row direction X and the width of the third light-emitting device LD3 in the row direction X.

[0059] The height of the light-emitting device LD in the column direction Y is the distance between the points farthest apart in the column direction Y of its orthographic projection on the driving backplane BP; the width of the light-emitting device LD in the row direction X is the distance between the points farthest apart in the row direction X of its orthographic projection on the driving backplane BP.

[0060] To achieve the shrinkage of the first light-emitting device LD1 in the column direction Y, in some embodiments of the present disclosure, the first light-emitting device LD1 may include two light-emitting portions LD11 butted along the column direction Y. Both of the two light-emitting portions LD11 can shrink along the column direction Y, forming a large end with a larger width and a small end with a smaller width in the row direction X. At the same time, the shrinking directions of the two light-emitting portions LD11 are opposite, that is, they can shrink towards each other, so that the small ends are butted and the large ends are separated, forming a structure that is narrow in the middle and wide at both ends; or, they can also shrink away from each other, so that the large ends are butted and the small ends are separated, forming a structure that is wide in the middle and narrow at both ends. In addition, if it is desired to increase the area of the first light-emitting device LD1, the above-mentioned small end can be widened without adjusting the width of the large end.

[0061] Furthermore, in some embodiments, for the first light-emitting device LD1 including two light-emitting portions LD11, its orthographic projection on the driving backplane BP can be an axisymmetric figure, that is, the two light-emitting portions LD11 are symmetric about the row symmetry axis extending along the row direction X, and the two light-emitting portions LD11 are symmetric about the column symmetry axis extending along the column direction Y.

[0062] Of course, in other embodiments of the present disclosure, the orthographic projection of the first light-emitting device LD1 on the driving backplane BP may not be an axisymmetric figure.

[0063] Next, an exemplary description of the arrangement manner of the light-emitting device LD will be given:

[0064] The first type of embodiment

[0065] As Figure 3 shown, in a light-emitting unit LG, it may have one first light-emitting device LD1, two second light-emitting devices LD2, and two third light-emitting devices LD3; the two second light-emitting devices LD2 can be symmetrically arranged on both sides of the first light-emitting device LD1 along the row direction X, and the two third light-emitting devices LD3 can be symmetrically arranged on both sides of the first light-emitting device LD1 along the row direction X. At the same time, the shapes and areas of the second light-emitting device LD2 and the third light-emitting device LD3 on the same side of the first light-emitting device LD1 are the same, and they can be symmetrically arranged about the row symmetry axis Sx. In addition, two adjacent light-emitting units LG in the row direction X can share the first light-emitting device LD1, that is, one first light-emitting device LD1 can belong to two light-emitting units LG at the same time.

[0066] In some embodiments, the first light-emitting device LD1 includes two of the above-mentioned light-emitting portions LD11. The orthographic projections of the two light-emitting portions LD11 on the driving backplane BP may be trapezoids that converge towards each other, such that the smaller ends are docked. The boundaries of the orthographic projection of the first light-emitting device LD1 on the driving backplane BP in the row direction X are concave. The second light-emitting device LD2 and the third light-emitting device LD3 on the same side of the first light-emitting device LD1 are at least partially located within the range of this concavity, making the arrangement of the light-emitting devices LD more compact and facilitating an increase in resolution. The orthographic projections of the second light-emitting device LD2 and the third light-emitting device LD3 on the driving backplane BP may be triangular, and the orthographic projections of the second light-emitting device LD2 and the third light-emitting device LD3 on the same side of the first light-emitting device LD1 on the driving backplane BP are symmetrically arranged along the row symmetry axis Sx, such that the overall contour formed by their orthographic projections is generally rhomboid-shaped.

[0067] The width b of the larger end of the orthographic projection of the light-emitting portion LD11 on the driving backplane BP in the row direction X is greater than the width a of the smaller end in the row direction X, that is, the maximum width of the light-emitting portion LD11 in the row direction X is b, and the minimum width is a. The height h11 of the orthographic projection of the light-emitting portion LD11 on the driving backplane BP in the column direction Y is half of the height h1 of the orthographic projection of the first light-emitting device LD1 on the driving backplane BP in the column direction Y. The length of the opposite sides of the orthographic projections of the second light-emitting device LD2 and the third light-emitting device LD3 on the driving backplane BP in the row direction X may be equal to b - a. For example, a, b, and h11 are all not greater than 50 μm and not less than 5 μm.

[0068] The second type of embodiment

[0069] As Figure 4 shown, in a light-emitting unit LG, it may have one first light-emitting device LD1, two second light-emitting devices LD2, and two third light-emitting devices LD3; the two second light-emitting devices LD2 may be symmetrically arranged on both sides of the first light-emitting device LD1 along the row direction X, and the two third light-emitting devices LD3 may be symmetrically arranged on both sides of the first light-emitting device LD1 along the row direction X. At the same time, the shapes and areas of the second light-emitting device LD2 and the third light-emitting device LD3 on the same side of the first light-emitting device LD1 are the same, and they may be symmetrically arranged with respect to the row symmetry axis Sx. In addition, two adjacent light-emitting units LG in the row direction X may share the first light-emitting device LD1, that is, one first light-emitting device LD1 may belong to two light-emitting units LG at the same time.

[0070] In some embodiments, the first light-emitting device LD1 includes two of the above-mentioned light-emitting portions LD11. The orthographic projections of the two light-emitting portions LD11 on the driving backplane BP may be trapezoids that contract backward, with the large ends of the two trapezoids docked, and the boundary of the orthographic projection of the first light-emitting device LD1 on the driving backplane BP bulges outward in the row direction X. The orthographic projections of the second light-emitting device LD2 and the third light-emitting device LD3 on the driving backplane BP may be triangles, and the two triangles are symmetrically arranged along the row symmetry axis Sx, with two angles of the two triangles facing each other, so that the second light-emitting device LD2 and the third light-emitting device LD3 contract toward each other.

[0071] The width b of the large end of the orthographic projection of the light-emitting portion LD11 on the driving backplane BP in the row direction X is greater than the width a of the small end in the row direction X, that is, the maximum width of the light-emitting portion LD11 in the row direction X is b, and the minimum width is a. The height h11 of the orthographic projection of the light-emitting portion LD11 on the driving backplane BP in the column direction Y is half of the height h1 of the orthographic projection of the first light-emitting device LD1 on the driving backplane BP in the column direction Y. The length D of the side facing away from each other in the orthographic projections of the second light-emitting device LD2 and the third light-emitting device LD3 on the driving backplane BP in the row direction X may be equal to b - a. For example, a, b, and h11 are all not greater than 50 μm and not less than 5 μm.

[0072] The third type of embodiment

[0073] As Figure 5 shown, in a light-emitting unit LG, it may have two first light-emitting devices LD1, one second light-emitting device LD2, and two third light-emitting devices LD3; the two first light-emitting devices LD1 may be symmetrically arranged on both sides of the second light-emitting device LD2 along the row direction X; the two third light-emitting devices LD3 may be symmetrically arranged on both sides of the second light-emitting device LD2 along the row direction X, and the two first light-emitting devices LD1 are located between the two third light-emitting devices LD3. At the same time, two adjacent light-emitting units LG in the row direction X can share one second light-emitting device LD2, that is, one second light-emitting device LD2 can belong to two light-emitting units LG at the same time.

[0074] In some embodiments, the first light-emitting device LD1 includes two of the above-mentioned light-emitting portions LD11, and the two light-emitting portions LD11 contract backward, so that the large ends are docked and the small ends extend backward. The orthographic projections of the second light-emitting device LD2 and the third light-emitting device LD3 on the driving backplane BP may be triangles.

[0075] In some embodiments, the contour of the orthographic projection of the first light-emitting device LD1 on the driving backplane BP may be hexagonal and surrounded by a first side L1, a second side L2, a third side L3, a fourth side L4, a fifth side L5, and a sixth side L6 connected in sequence; where:

[0076] The first side L1 and the fourth side L4 extend along the row direction X and are distributed along the column direction Y; the second side L2 and the fifth side L5 form a specified angle with the row direction X and the column direction Y, and the specified angle is an acute angle or an obtuse angle, that is, the extension directions of the second side L2 and the fifth side L5 intersect with the row direction X and the column direction Y and are not perpendicular; the third side L3 and the sixth side L6 extend along the column direction Y and are distributed along the row direction X.

[0077] The lengths of the first side L1 and the fourth side L4 are equal; the lengths of the second side L2 and the fifth side L5 are equal; the lengths of the third side L3 and the sixth side L6 are equal; the lengths of the third side L3 and the sixth side L6 are greater than the lengths of the first side L1 and the fourth side L4.

[0078] In the same light-emitting unit LG, a triangular space can be approximately formed between the second sides L2 of the two first light-emitting devices LD1, and the second light-emitting device LD2 is located within the triangular space.

[0079] In a light-emitting unit LG and a light-emitting unit LG adjacent to it in the row direction X, a triangular space can be approximately formed between the fifth sides L5 of a first light-emitting device LD1 of one light-emitting unit LG and the fifth sides L5 of the first light-emitting device LD1 of the other light-emitting unit LG, and a third light-emitting device LD3 is arranged within the triangular space.

[0080] The width b of the large end of the orthographic projection of the light-emitting part LD11 on the driving backplane BP in the row direction X is greater than the width a of the small end in the row direction X, that is, the maximum width of the light-emitting part LD11 in the row direction X is b, and the minimum width is a. The height h11 of the orthographic projection of the light-emitting part LD11 on the driving backplane BP in the column direction Y is half of the height h1 of the orthographic projection of the first light-emitting device LD1 on the driving backplane BP in the column direction Y. The length D of the opposite sides in the row direction X in the orthographic projections of the second light-emitting device LD2 and the third light-emitting device LD3 on the driving backplane BP can be equal to b - a. For example, a, b, and h11 are all not greater than 50 μm and not less than 5 μm.

[0081] The fourth type of implementation

[0082] As Figure 6 shown, a light-emitting unit LG has two first light-emitting devices LD1, one second light-emitting device LD2, and one third light-emitting device LD3; one first light-emitting device LD1 and the second light-emitting device LD2 are distributed along the column direction Y, and this first light-emitting device LD1 and the third light-emitting device LD3 are distributed along the row direction X; the other first light-emitting device LD1 and the third light-emitting device LD3 are distributed along the column direction Y, and this first light-emitting device LD1 and the second light-emitting device LD2 are distributed along the row direction X.

[0083] The outlines of the positive projections of the two first light-emitting devices LD1 of a light-emitting unit LG on a driving backplane BP are trapezoidal, and the small ends of the trapezoids are arranged towards each other in the column direction Y, but are staggered in the row direction X. The positive projections of the second light-emitting device LD2 and the third light-emitting device LD3 on the driving backplane BP are triangular; the first light-emitting device LD1, one second light-emitting device LD2, and one third light-emitting device LD3 can approximately enclose a parallelogram area.

[0084] The width b of the large end of the positive projection of the light-emitting part LD11 on the driving backplane BP in the row direction X is greater than the width a of the small end in the row direction X, that is, the maximum width of the light-emitting part LD11 in the row direction X is b, and the minimum width is a. The height h11 of the positive projection of the light-emitting part LD11 on the driving backplane BP in the column direction Y is half of the height h1 of the positive projection of the first light-emitting device LD1 on the driving backplane BP in the column direction Y. The length D of the opposite sides in the row direction X of the positive projections of the second light-emitting device LD2 and the third light-emitting device LD3 on the driving backplane BP can be equal to b - a. For example, a, b, and h11 are all not greater than 50 μm and not less than 5 μm.

[0085] The present disclosure also provides a display device, which may include the display panel of any of the above embodiments. Its specific structure and beneficial effects can refer to the embodiments of the display panel in the above text and will not be elaborated here. The display device of the present disclosure can be a mobile phone, a television, a computer, or can also be an electronic device with a display function such as a smart watch, a smart device, etc., and will not be listed one by one here.

[0086] Those skilled in the art will readily conceive of other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present disclosure, which follow the general principles of the present disclosure and include known common knowledge or conventional technical means in the technical field not disclosed in the present disclosure. The specification and embodiments are only regarded as exemplary, and the true scope and spirit of the present disclosure are pointed out by the appended claims.

Claims

1. A display panel, characterized in that, Including: A driving backplane; A plurality of light-emitting devices disposed on one side of the driving backplane; The light-emitting devices include a first light-emitting device, a second light-emitting device, and a third light-emitting device with different light-emitting colors; the light-emitting devices are divided into a plurality of light-emitting units distributed in the row direction and the column direction, and one light-emitting unit includes the first light-emitting device, the second light-emitting device, and the third light-emitting device; The outline of the orthographic projection of the light-emitting device on the driving backplane is a polygon, and the area of the orthographic projection of the first light-emitting device on the driving backplane is larger than the areas of the orthographic projections of the second light-emitting device and the third light-emitting device on the driving backplane; the first light-emitting device is at least partially shrunk along the column direction; In one light-emitting unit, the height of the first light-emitting device in the column direction is not less than the sum of the heights of the second light-emitting device and the third light-emitting device in the column direction; The width of the first light-emitting device in the row direction is greater than the widths of the second light-emitting device and the third light-emitting device in the row direction.

2. The display panel according to claim 1, wherein, The first light-emitting device includes two light-emitting portions docked along the column direction, and the two light-emitting portions are shrunk towards or away from each other along the column direction.

3. The display panel according to claim 2, wherein The two light-emitting portions are symmetric about a row symmetry axis extending in the row direction and symmetric about a column symmetry axis extending in the column direction.

4. The display panel according to claim 3, wherein One light-emitting unit has one first light-emitting device, two second light-emitting devices, and two third light-emitting devices; the two second light-emitting devices are symmetrically disposed on both sides of the first light-emitting device along the row direction, and the two third light-emitting devices are symmetrically disposed on both sides of the first light-emitting device along the row direction; In the row direction, two adjacent light-emitting units share the first light-emitting device; In one light-emitting unit, the second light-emitting device and the third light-emitting device on the same side of the first light-emitting device are symmetric about the row symmetry axis.

5. The display panel according to claim 2, characterized in that One light-emitting unit has two first light-emitting devices, one second light-emitting device, and two third light-emitting devices; the two first light-emitting devices are symmetrically disposed on both sides of the second light-emitting device, the two third light-emitting devices are symmetrically disposed on both sides of the second light-emitting device, and the two first light-emitting devices are located between the two third light-emitting devices; In the row direction, two adjacent light-emitting units share the second light-emitting device.

6. The display panel according to claim 5, wherein The outline of the orthographic projection of the first light-emitting device on the driving backplane is hexagonal and is surrounded by a first side, a second side, a third side, a fourth side, a fifth side, and a sixth side connected in sequence; The first side and the fourth side extend in the row direction and are distributed in the column direction; the second side and the fifth side form a specified angle with the row direction and the column direction, and the specified angle is an acute angle or an obtuse angle; the third side and the sixth side extend in the column direction and are distributed in the row direction; The lengths of the first side and the fourth side are equal; the lengths of the second side and the fifth side are equal; the lengths of the third side and the sixth side are equal; the lengths of the third side and the sixth side are greater than the lengths of the first side and the fourth side.

7. The display panel according to claim 1, wherein One of the light emitting units includes two of the first light emitting devices, one of the second light emitting devices, and one of the third light emitting devices; one of the first light emitting devices and the second light emitting device are distributed along the column direction, and the first light emitting device and the third light emitting device are distributed along the row direction; the other first light emitting device and the third light emitting device are distributed along the column direction, and the first light emitting device and the second light emitting device are distributed along the row direction.

8. The display panel according to claim 7, wherein, The outlines of the positive projections of the two first light emitting devices of one of the light emitting units on the driving backplane are trapezoidal, and the small ends of the trapezoids are arranged towards each other along the column direction.

9. The display panel according to any one of claims 1-8, characterized in that, The positive projections of the second light emitting device and the third light emitting device on the driving backplane are triangular.

10. A display device, characterized in that, Comprising the display panel according to any one of claims 1-9.

Images