Display panel and display device

Abstract

The invention discloses a display panel and a display device, and belongs to the technical field of display. The display panel comprises a driving backboard, a pixel definition layer and a light-emitting layer, the light-emitting layer comprises a plurality of light-emitting parts, the plurality of light-emitting parts comprise a plurality of first light-emitting parts, a plurality of second light-emitting parts and a plurality of third light-emitting parts, orthographic projections of the first light-emitting parts on the driving back plate are provided with two concave areas which are oppositely arranged in the first direction, and orthographic projections of the second light-emitting parts on the driving back plate are at least located in the concave areas; the orthographic projection of the third light-emitting part on the driving back plate is located on one side of the orthographic projection of the first light-emitting part on the driving back plate in the second direction. Thus, the first light-emitting part and the two adjacent second light-emitting parts can be matched in a concave-convex mode, the light-emitting parts are arranged more tightly, the space utilization rate of a screen is improved, more light-emitting parts can be arranged on the display panel, the light-emitting area is increased, and the pixel aperture ratio is increased.

Description

Technical Field

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

[0002] Organic Light Emitting Diode (OLED) is a current-type organic light-emitting device. OLED display panels have the advantages of being thin, self-luminous, bendable, and can be made on a flexible substrate, so they are widely used in the display field.

[0003] In the related art, an OLED display panel generally includes: a driving backplane and a plurality of light-emitting devices arranged in an array. The plurality of light-emitting devices may include: a plurality of red light-emitting devices for emitting red light, a plurality of green light-emitting devices for emitting green light, and a plurality of blue light-emitting devices for emitting blue light. After the light of different colors emitted by the plurality of red light-emitting devices, green light-emitting devices, and blue light-emitting devices are mixed and superimposed, the display panel can present a corresponding display screen.

[0004] However, the current OLED display panel has a low screen space utilization rate, which results in a low pixel aperture ratio of the OLED display panel. Summary of the invention

[0005] The present application provides a display panel and a display device, which can solve the problem of low pixel aperture ratio caused by low screen space utilization of the display panel. The technical solution is as follows:

[0006] In one aspect, a display panel is provided, comprising: a driving backplane, a pixel definition layer, and a light emitting layer;

[0007] The pixel definition layer is located on one side of the driving backplane, and the pixel definition layer has a plurality of pixel openings;

[0008] The light-emitting layer is located on a side of the pixel definition layer away from the driving backplane, the light-emitting layer includes a plurality of light-emitting portions, the plurality of light-emitting portions correspond to the plurality of pixel openings one by one, and the light-emitting portions are located in the corresponding pixel openings;

[0009] Among them, the multiple light-emitting parts include multiple first light-emitting parts, multiple second light-emitting parts and multiple third light-emitting parts; the orthographic projection of the first light-emitting part on the driving backplane has two concave areas arranged opposite to each other in a first direction, and the orthographic projection of the second light-emitting part on the driving backplane is at least located in the concave areas; the orthographic projection of the third light-emitting part on the driving backplane is located on one side of the orthographic projection of the first light-emitting part on the driving backplane in the second direction; the first direction intersects with the second direction.

[0010] Optionally, the length of the third light-emitting portion in the first direction is greater than the minimum width of the first light-emitting portion in the first direction and the sum of the maximum widths of two second light-emitting portions in the two recessed areas distributed in the same first light-emitting portion in the first direction.

[0011] Optionally, for the two second light-emitting portions distributed in the two recessed areas in the same first light-emitting portion, the distance between the side of one second light-emitting portion facing away from the first light-emitting portion and the side of the other second light-emitting portion facing away from the first light-emitting portion is equal to the length of the third light-emitting portion in the first direction.

[0012] Optionally, for the two second light-emitting portions distributed in the two recessed areas in the same first light-emitting portion, the side of one second light-emitting portion facing away from the first light-emitting portion is flush with one side of the adjacent third light-emitting portion, and the side of the other second light-emitting portion facing away from the first light-emitting portion is flush with the other side of the adjacent third light-emitting portion.

[0013] Optionally, an area of ​​an orthographic projection of the third light-emitting portion on the driving backplane is larger than an area of ​​an orthographic projection of the first light-emitting portion on the driving backplane, and larger than an area of ​​an orthographic projection of the second light-emitting portion on the driving backplane.

[0014] Optionally, the area of ​​the orthographic projection of the third light-emitting portion on the driving backplane is greater than or equal to the sum of the area of ​​the orthographic projection of the first light-emitting portion on the driving backplane and the area of ​​the orthographic projection of the two second light-emitting portions distributed in the two recessed areas in the same first light-emitting portion on the driving backplane.

[0015] Optionally, the light emitting color of the first light emitting unit is one of red and green, the light emitting color of the second light emitting unit is the other of red and green, and the light emitting color of the third light emitting unit is blue.

[0016] Optionally, the concave area has a first boundary and a second boundary arranged opposite to each other in the first direction;

[0017] The first boundary is a straight line boundary parallel to the second direction;

[0018] The second boundary is an arc-shaped boundary, and the two ends of the arc-shaped boundary are respectively connected to the two ends of the first boundary; or, the second boundary at least includes a first sub-boundary and a second sub-boundary arranged in the second direction, and the first end of the first sub-boundary and the first end of the second sub-boundary are respectively connected to the two ends of the first boundary.

[0019] Optionally, when the second boundary at least includes the first subboundary and the second subboundary arranged in the second direction, the second end of the first subboundary is connected to the second end of the second subboundary; wherein the first subboundary and the second subboundary are both straight line boundaries intersecting the first direction and the second direction; or, the first subboundary is a straight line boundary parallel to the first direction, and the second subboundary is a curved line boundary;

[0020] Alternatively, the second boundary also includes a third sub-boundary, and both ends of the third sub-boundary are respectively connected to the second end of the first sub-boundary and the second end of the second sub-boundary; wherein the first sub-boundary and the second sub-boundary are both straight line boundaries intersecting with the first direction and the second direction, and the third sub-boundary is a straight line boundary parallel to the second direction; or, the first sub-boundary is a straight line boundary intersecting with the first direction and the second direction, the second sub-boundary is a straight line boundary parallel to the first direction, and the third sub-boundary is a straight line boundary parallel to the second direction.

[0021] On the other hand, a display device is provided, including a driving component and a display panel electrically connected to the driving component, wherein the display panel includes any one of the display panels described above.

[0022] The beneficial effects of the technical solution provided by this application include at least:

[0023] Since the orthographic projection of the first light-emitting part in the display panel on the driving backplane has two concave areas arranged opposite to each other in the first direction, the orthographic projection of the second light-emitting part in the display panel on the driving backplane is at least located in the concave area. Therefore, the first light-emitting part and the two adjacent second light-emitting parts can achieve concave-convex matching, so that multiple light-emitting parts can be arranged more closely. In this way, the space of the display panel can be reasonably utilized, the screen space utilization rate of the display panel can be improved, and more light-emitting parts can be arranged on the display panel, so that the light-emitting area can be increased and the pixel opening rate of the display panel can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 is a top view of a display panel provided in an embodiment of the present application;

[0026] Figure 2 yes Figure 1 The schematic diagram of the film layer structure of the display panel at AA' is shown;

[0027] Figure 3 yes Figure 1 Another schematic diagram of the film layer structure of the display panel at AA' is shown;

[0028] Figure 4 is another top view of a display panel provided by an embodiment of the present application;

[0029] Figure 5 is a top view of another display panel provided in an embodiment of the present application;

[0030] Figure 6 is a structural schematic diagram of a concave area provided in an embodiment of the present application;

[0031] Figure 7 is a schematic structural diagram of another concave area provided in an embodiment of the present application;

[0032] Figure 8 yes Figure 7 A top view showing the arrangement of the recessed areas in the display panel;

[0033] Fig. 9 is a schematic structural diagram of another concave area provided in an embodiment of the present application;

[0034] Fig.10 yes Fig. 9 A top view showing the arrangement of the recessed areas in the display panel;

[0035] Fig.11 is a schematic structural diagram of another concave area provided in an embodiment of the present application;

[0036] Fig.12 yes Fig.11 A top view showing the arrangement of the recessed areas in the display panel;

[0037] Fig.13 is a schematic structural diagram of another concave area provided in an embodiment of the present application;

[0038] Fig.14 yes Fig.13 A top view showing the arrangement of the recessed areas in the display panel;

[0039] Fig.15 is a schematic structural diagram of another concave area provided in an embodiment of the present application;

[0040] Fig.16 yes Fig.15 A top view showing the arrangement of the recessed areas in the display panel;

[0041] Fig.17 is a schematic structural diagram of another concave area provided in an embodiment of the present application;

[0042] Fig.18 yes Fig.17 A top view showing the arrangement of the recessed areas in the display panel;

[0043] Fig.19 is a schematic structural diagram of another concave area provided in an embodiment of the present application;

[0044] Fig. 20 yes Fig.19 A top view showing the arrangement of recessed areas in a display panel. DETAILED DESCRIPTION

[0045] In order to make the objectives, technical solutions and advantages of the present application clearer, the implementation methods of the present application will be further described in detail below with reference to the accompanying drawings.

[0046] The embodiment of the present application provides a display panel that can solve the problem of low pixel aperture ratio due to low screen space utilization of the display panel. Figure 1 and Figure 2 , Figure 1 is a top view of a display panel provided in an embodiment of the present application, Figure 2 yes Figure 1 The schematic diagram of the film structure of the display panel at AA' is shown, wherein: Figure 2 The dotted frame in FIG. 3 is used to identify the first light emitting portion 301. The display panel 000 may include: a driving backplane 100, a pixel definition layer 200 and a light emitting layer 300.

[0047] The pixel definition layer 200 may be located on one side of the driving backplane 100. The pixel definition layer 200 may define a plurality of pixel regions on the driving backplane 100, as well as a non-pixel region located between adjacent pixel regions, and the non-pixel region is arranged around the corresponding pixel region. The pixel definition layer 200 may have a plurality of pixel openings U. The pixel region defined by the pixel definition layer 200 on the driving backplane 100 refers to: the region where the pixel opening U is located; the non-pixel region defined by the pixel definition layer 200 on the driving backplane 100 refers to: the region around which the pixel opening U is distributed.

[0048] The light-emitting layer 300 can be located on a side of the pixel definition layer 200 away from the driving backplane 100. The light-emitting layer 300 may include multiple light-emitting portions, which correspond one-to-one to multiple pixel openings U, and the light-emitting portions are located in the corresponding pixel openings U, that is, the light-emitting portions are located in the pixel area.

[0049] The display panel 000 may further include a first electrode 400 and a second electrode 500. The first electrode 400 may be an anode, and the second electrode 500 may be a cathode. The first electrode 400 may be located on a side of the pixel definition layer 200 close to the driving backplane 100, and the number of the first electrodes 400 may be multiple, and the multiple first electrodes 400 may correspond to the multiple pixel openings U one by one, that is, the multiple first electrodes 400 may correspond to the multiple light-emitting portions one by one. The orthographic projection of the pixel opening U on the driving backplane 100 may be located within the orthographic projection of the corresponding first electrode 400 on the driving backplane 100, and the light-emitting portion located in the pixel opening U may contact the first electrode 400. The second electrode 500 is located on a side of the light-emitting layer 300 away from the driving backplane 100, that is, the light-emitting portion may contact the second electrode 500. In other words, the light-emitting portion located in the pixel opening U may contact the first electrode 400 and the second electrode 500 at the same time. When corresponding voltages are applied to the first electrode 400 and the second electrode 500 , the plurality of light emitting portions therebetween can emit light of different colors, and the light is mixed and superimposed, so that the display panel 000 can present a corresponding display image.

[0050] The plurality of light emitting portions may include a plurality of first light emitting portions 301 , a plurality of second light emitting portions 302 and a plurality of third light emitting portions 303 , and the light emitting colors of the first light emitting portions 301 , the second light emitting portions 302 and the third light emitting portions 303 may be different.

[0051] Please refer to Figure 1 , the orthographic projection of the first light-emitting portion 301 on the driving backplane 100 may have two concave areas K arranged opposite to each other in the first direction X, the orthographic projection of the second light-emitting portion 302 on the driving backplane 100 may be located at least within the concave area K, and the orthographic projection of the third light-emitting portion 303 on the driving backplane 100 may be located on one side of the orthographic projection of the first light-emitting portion 301 on the driving backplane 100 in the second direction Y. Among them, the first direction X may intersect with the second direction Y. For example, the first direction X may be perpendicular to the second direction Y, and the first direction X and the second direction Y may be parallel to the driving backplane 100. It should be noted that the embodiment of the present application is schematically illustrated by taking the first direction X as the horizontal direction and the second direction Y as the longitudinal direction as an example. In other implementations, please refer to Figure 5 , the first direction X may also be the longitudinal direction, and the second direction Y may also be the transverse direction. This embodiment of the present application does not limit this.

[0052] In this way, the adjacently distributed third light-emitting portion 303, the first light-emitting portion 301 and the two second light-emitting portions 302 located in the recessed area K of the first light-emitting portion 301 can emit light of different colors, and after the light is mixed, the display panel 000 can display the corresponding picture.

[0053] In a possible implementation, the orthographic projection of the second light emitting portion 302 on the driving backplane 100 may be entirely located within the concave area K; in another possible implementation, as Figure 1 As shown, a portion of the orthographic projection of the second light emitting portion 302 on the driving backplane 100 may be located in the concave area K, and another portion may be located outside the concave area K. This embodiment of the present application does not limit this.

[0054] In this way, a concave-convex fit can be achieved between the first light-emitting portion 301 and the two adjacent second light-emitting portions 302, so that the multiple light-emitting portions can be arranged more closely, thereby improving the screen space utilization of the display panel 000, and further enabling the display panel 000 to arrange more light-emitting portions, thereby increasing the light-emitting area and improving the pixel opening ratio.

[0055] In summary, an embodiment of the present application provides a display panel, which includes: a plurality of first light-emitting parts, a plurality of second light-emitting parts, and a plurality of third light-emitting parts. The orthographic projection of the first light-emitting part on the driving backplane has two concave areas arranged opposite to each other in the first direction, and the orthographic projection of the second light-emitting part on the driving backplane is at least located in the concave area. In this way, a concave-convex fit can be achieved between the first light-emitting part and the two adjacently distributed second light-emitting parts, so that the multiple light-emitting parts can be arranged more closely. In this way, the space of the display panel can be reasonably utilized, the screen space utilization rate of the display panel can be improved, and the display panel can be arranged with more light-emitting parts, so that the light-emitting area can be increased and the pixel opening rate of the display panel can be improved.

[0056] Please refer to Figure 3 , Figure 3 The dotted box in the figure is used to identify the thin film transistor 104. The driving backplane 100 of the display panel 000 may include: a substrate 101, and a buffer layer 102, a gate insulating layer 103, a thin film transistor 104, an interlayer dielectric layer 105, a conductive layer 106, a second planar layer 107, and a first planar layer 108 stacked on the substrate 101 in a direction vertically and away from the substrate 101.

[0057] The driving backplane 100 may include a plurality of thin film transistors 104. The thin film transistor 104 may include a gate 1041, a source 1042, a drain 1043 and an active layer pattern 1044. One of the source 1042 and the drain 1043 may be electrically connected to a data line, and the other of the source 1042 and the drain 1043 may be electrically connected to a conductive layer 106. The conductive layer 106 may be electrically connected to a first electrode 400, so that the source 1042 or the drain 1043 may be electrically connected to the first electrode 400, thereby achieving electrical connection between the thin film transistor 104 and the first electrode 400. In the embodiment of the present application, the drain 1043 may be electrically connected to the data line, and the source 1042 may be electrically connected to the conductive layer 106.

[0058] There may be multiple first electrodes 400, and multiple thin film transistors 104 may correspond to the multiple first electrodes 400 one by one, and be electrically connected together through the conductive layer 106. The multiple first electrodes 400 may also be connected to the multiple light-emitting portions one by one, that is, the multiple thin film transistors 104 may correspond to the multiple light-emitting portions one by one. In this way, the multiple thin film transistors 104 may be used to drive the corresponding first electrodes 400, so that under the action of the first electrode 400 and the second electrode 500, the light-emitting portion located between the two can emit light, so that the display panel 000 can display the corresponding picture.

[0059] It should be noted that the multiple light-emitting parts in the light-emitting layer 300 can be formed by evaporation using a fine metal mask. The fine metal mask contains multiple evaporation openings. After the evaporation material is attached to the driving backplane 100 through these evaporation openings, multiple light-emitting parts can be formed on the driving backplane 100. Because there is a certain distance between two adjacent openings in the fine metal mask, there is also a certain distance between two adjacent light-emitting parts in the multiple light-emitting parts formed on the driving backplane 100.

[0060] For example, please refer to Figure 4 , the distance between the first light-emitting portion 301 and the adjacent second light-emitting portion 302 is a, the distance between the first light-emitting portion 301 and the adjacent third light-emitting portion 303 is b, and the distance between the second light-emitting portion 302 and the adjacent third light-emitting portion 303 is c. When the distance between two adjacent light-emitting portions is too large, it may result in a smaller number of light-emitting portions that can be arranged in the display panel 000, resulting in a lower pixel aperture ratio. Optionally, the distance between two adjacent light-emitting portions can be between 16 microns and 20 microns, preferably 18 microns, that is, a, b, and c can all be 18 microns. In this way, the space of the display panel 000 can be reasonably utilized to arrange a larger number of light-emitting portions, thereby improving the pixel aperture ratio.

[0061] exist Figure 4In the embodiment, two second light-emitting portions 302 are arranged between two adjacent first light-emitting portions 301 in the first direction X. For the two second light-emitting portions 302, one second light-emitting portion 302 can be located in the concave area K in one first light-emitting portion 301, and the other second light-emitting portion 302 can be located in the concave area K in the other first light-emitting portion 301. During evaporation, the same evaporation opening in the fine metal mask can be used to simultaneously form the two second light-emitting portions 302. In this way, the distance between the two second light-emitting portions 302 can be reduced, so that there is space to arrange more light-emitting portions, thereby improving the pixel aperture ratio.

[0062] It should be noted that the light-emitting layer 300 may also include a plurality of non-light-emitting portions, and the plurality of non-light-emitting portions may correspond one-to-one to the plurality of light-emitting portions. The non-light-emitting portions may be arranged around the corresponding light-emitting portions and may be connected to the corresponding light-emitting portions. However, the non-light-emitting portion does not contact the first electrode 400, so the non-light-emitting portion does not emit light. When the two second light-emitting portions 302 are formed simultaneously using the same evaporation opening, the non-light-emitting portion between the two second light-emitting portions 302 is connected together, that is, the two second light-emitting portions 302 are connected together. However, since the non-light-emitting portion does not contact the first electrode 400, the two second light-emitting portions 302 can emit light separately without affecting each other.

[0063] Similarly, two third light-emitting portions 303 adjacently distributed along the first direction X may also be formed simultaneously by using one evaporation opening of a fine metal mask.

[0064] like Figure 4 As shown, the minimum width of the first light-emitting portion 301 in the first direction X is X1, the maximum width of the second light-emitting portion 302 distributed in the recessed area K of the first light-emitting portion 301 in the first direction X is X2, and the length of the third light-emitting portion 303 adjacent to the first light-emitting portion 301 in the first direction X is X3.

[0065] Since the first light-emitting portion 301 and two adjacent second light-emitting portions 302 may have a certain distance therebetween, the length X3 of the third light-emitting portion 303 in the first direction X may be greater than the sum of the minimum width X1 of the first light-emitting portion 301 in the first direction X and the maximum width X2 of the two second light-emitting portions 302 in the two concave areas K in the same first light-emitting portion 301 in the first direction X. In this way, the length X3 of the third light-emitting portion 303 in the first direction X can be ensured to be larger, so that the area of ​​the orthographic projection of the third light-emitting portion 303 on the driving backplane 100 is larger.

[0066] For the two second light emitting portions 302 distributed in the two concave areas K in the same first light emitting portion 301, the distance between the side of one second light emitting portion 302 away from the first light emitting portion 301 and the side of the other second light emitting portion 302 away from the first light emitting portion 301 may be equal to the length X3 of the third light emitting portion 303 in the first direction X. In this way, the area of ​​the orthographic projection of the third light emitting portion 303 on the driving backplane 100 can be larger.

[0067] In a possible implementation, the orthographic projection of the third light emitting portion 303 on the driving backplane 100 may be a quadrilateral. Figure 1 and Figure 4 As shown, the orthographic projection of the third light-emitting portion 303 on the driving backplane 100 can be a rectangle, and of course can also be a parallelogram, a rhombus or other shapes. The orthographic projection of the two second light-emitting portions 302 and the first light-emitting portion 301 distributed in the two concave areas K of the same first light-emitting portion 301, and the three light-emitting portions as a whole on the driving backplane 100 can also be approximately rectangular. Thus, the adjacently distributed first light-emitting portion 301, the second light-emitting portion 302 and the third light-emitting portion 303 can be arranged more closely.

[0068] Please refer to Figure 1 and Figure 4 , for the two second light-emitting portions 302 distributed in the two recessed areas K in the same first light-emitting portion 301, the side of one second light-emitting portion 302 facing away from the first light-emitting portion 301 can be flush with the side of the adjacent third light-emitting portion 303, and the side of the other second light-emitting portion 302 facing away from the first light-emitting portion 301 can be flush with the other side of the adjacent third light-emitting portion 303. That is, the adjacent third light-emitting portion 303, the first light-emitting portion 301, and the two second light-emitting portions 302 located in the two recessed areas K in the first light-emitting portion 301, the overall positive projection of these four light-emitting portions on the driving backplane 100 can be approximately a quadrilateral, such as a rectangle. For example, as Figure 5 As shown, the positions of the four light-emitting parts can be properly rotated or rearranged, but the shape of the overall orthographic projection on the driving backplane 100 can be approximately a quadrilateral, such as a rectangle. In this way, a plurality of approximate rectangles can be arranged in an array in the display panel 000, so that a plurality of light-emitting parts can be arranged more closely, thereby effectively utilizing the space of the display panel 000, so that the display panel 000 can be arranged with a greater number of light-emitting parts, thereby increasing the pixel aperture ratio of the display panel 000.

[0069] It should be noted that the luminous color of the first light-emitting unit 301 may be one of red and green, the luminous color of the second light-emitting unit 302 may be the other of red and green, and the luminous color of the third light-emitting unit 303 may be blue. Since the life of the light-emitting unit emitting blue light is short, the luminous efficiency of the blue light will be greatly attenuated after working for a long time. The display screen is usually presented by mixing and superimposing the light of different colors emitted by the light-emitting unit. After the luminous efficiency of the blue light is attenuated, the display screen may have a color cast, which brings a poor user experience.

[0070] To this end, in the display panel 000 provided in the embodiment of the present application, the area of ​​the orthographic projection of the third light-emitting portion 303 on the driving backplane 100 can be larger than the area of ​​the orthographic projection of the first light-emitting portion 301 on the driving backplane 100, and can be larger than the area of ​​the orthographic projection of the second light-emitting portion 302 on the driving backplane 100. Preferably, the area of ​​the orthographic projection of the third light-emitting portion 303 on the driving backplane 100 can be larger than the area of ​​the orthographic projection of the two second light-emitting portions 302 on the driving backplane 100. In this way, for the adjacently distributed third light-emitting portion 303, the first light-emitting portion 301, and the two second light-emitting portions 302 located in the two recessed areas K in the first light-emitting portion 301, it can be ensured that the area of ​​the orthographic projection of the third light-emitting portion 303 on the driving backplane 100 is larger, thereby improving the luminous efficiency of blue light.

[0071] Exemplarily, the area of ​​the orthographic projection of the third light-emitting portion 303 on the driving backplane 100 may be greater than or equal to the area of ​​the orthographic projection of the first light-emitting portion 301 on the driving backplane 100, and the sum of the areas of the orthographic projection of the two second light-emitting portions 302 distributed in the two concave areas K in the same first light-emitting portion 301 on the driving backplane 100. In this way, it can be further ensured that the area of ​​the orthographic projection of the third light-emitting portion 303 on the driving backplane 100 is larger, the luminous efficiency of the blue light is improved, and the luminous efficiency of the blue light is kept as balanced as possible with the luminous efficiency of the red light and the green light, thereby reducing the color cast of the display screen and improving the user experience.

[0072] In one possible implementation, the orthographic projection of the second light-emitting portion 302 on the driving backplane 100 may be completely located in the recessed area K, wherein the shape of the orthographic projection of the second light-emitting portion 302 on the driving backplane 100 may be similar to the shape of the recessed area K; in another possible implementation, a portion of the orthographic projection of the second light-emitting portion 302 on the driving backplane 100 may be located in a recessed area K of the adjacent first light-emitting portion 301, and another portion may be located outside the recessed area K, wherein the shape of the portion of the orthographic projection of the second light-emitting portion 302 on the driving backplane 100 located in the recessed area K may be similar to the shape of the recessed area K. The recessed area K may have a variety of shapes, that is, the orthographic projection of the second light-emitting portion 302 on the driving backplane 100 may have a variety of shapes, or the portion of the orthographic projection of the second light-emitting portion 302 on the driving backplane 100 located in the recessed area K may have a variety of shapes.

[0073] Please refer to Figure 6 The concave region K may have a first boundary 10 and a second boundary 20 , and the first boundary 10 and the second boundary 20 may be disposed opposite to each other in the first direction X.

[0074] The first boundary 10 of the recessed area K may be a straight line boundary parallel to the second direction Y. When the orthographic projection of the second light-emitting portion 302 on the driving back plate 100 is completely located in the recessed area K, the first boundary 10 may be flush with the side of the orthographic projection of the second light-emitting portion 302 on the driving back plate 100 away from the first light-emitting portion 301, that is, the first boundary 10 may be flush with the side of the orthographic projection of the third light-emitting portion 303 on the driving back plate 100. When a portion of the orthographic projection of the second light-emitting portion 302 on the driving back plate 100 is located in the recessed area K, and the other portion is located outside the recessed area K, the first boundary 10 of the recessed area K is not flush with the side of the orthographic projection of the second light-emitting portion 302 on the driving back plate 100 away from the first light-emitting portion 301, and is not flush with the side of the orthographic projection of the third light-emitting portion 303 on the driving back plate 100.

[0075] In one possible case, please refer to Figure 6 and Figure 7 The second boundary 20 of the concave area K may be an arc-shaped boundary, one end of which may be connected to one end of the first boundary 10 , and the other end of which may be connected to the other end of the first boundary 10 , thereby connecting the second boundary 20 to the first boundary 10 .

[0076] according to Figure 6 The shape of the concave area K shown in FIG. 1 and the arrangement of the first light emitting portion 301 and the adjacent second light emitting portion 302 can refer to FIG. Figure 1, a part of the orthographic projection of the second light emitting portion 302 on the driving back plate 100 may be located in the recessed area K, and the shape of this part may be similar to the shape of the recessed area K, while the shape of another part located outside the recessed area K is different from the shape of the recessed area K. In addition, the part of the second light emitting portion 302 located outside the recessed area K in the orthographic projection on the driving back plate 100 may have: two straight line boundaries arranged oppositely in the second direction Y. That is, the part of the second light emitting portion 302 located outside the recessed area K in the orthographic projection on the driving back plate 100 may be approximately rectangular.

[0077] according to Figure 7 The shape of the concave area K shown in FIG. 1 and the arrangement of the first light emitting portion 301 and the adjacent second light emitting portion 302 can refer to FIG. Figure 8 , a part of the orthographic projection of the second light-emitting portion 302 on the driving backplane 100 may be located in the recessed area K, and the shape of this part may be similar to the shape of the recessed area K, while the shape of another part located outside the recessed area K is different from the shape of the recessed area K. In addition, the part of the orthographic projection of the second light-emitting portion 302 on the driving backplane 100 that is located outside the recessed area K may have: two arc-shaped boundaries arranged relatively in the second direction Y, and the arc-shaped boundaries are tangent to the arc-shaped boundaries of the part of the orthographic projection of the second light-emitting portion 302 on the driving backplane 100 that is located in the recessed area K. That is, the boundary of the side of the orthographic projection of the second light-emitting portion 302 on the driving backplane 100 that faces the recessed area K is an arc-shaped boundary as a whole.

[0078] In another possible case, please refer to Fig. 9 , the second boundary 20 of the concave area K may include at least a first sub-boundary 21 and a second sub-boundary 22 arranged in the second direction Y. A first end of the first sub-boundary 21 may be connected to one end of the first boundary 10, and a first end of the second sub-boundary 22 may be connected to the other end of the first boundary 10, so that the second boundary 20 may be connected to the first boundary 10 through the first sub-boundary 21 and the second sub-boundary 22.

[0079] In a first exemplary implementation, the second boundary 20 may include only a first subboundary 21 and a second subboundary 22. A first end of the first subboundary 21 and a first end of the second subboundary 22 may be connected to two ends of the first boundary 10, respectively, and a second end of the first subboundary 21 may be connected to a second end of the second subboundary 22. The first subboundary 21 may be a straight line boundary, and the second subboundary 22 may be a straight line boundary or a curved line boundary.

[0080] When the second sub-boundary 22 is a straight line boundary, please refer to Fig. 9 and Fig.11, the first sub-boundary 21 may intersect with the first direction X and the second direction Y, the second sub-boundary 22 may intersect with the first direction X and the second direction Y, and the first sub-boundary 21 may intersect with the second sub-boundary 22. In this way, the concave area K surrounded by the first sub-boundary 21, the second sub-boundary 22 and the first boundary 10 may be in a triangular shape.

[0081] according to Fig. 9 The shape of the concave area K shown in FIG. 1 and the arrangement of the first light emitting portion 301 and the adjacent second light emitting portion 302 can refer to FIG. Fig.10 A part of the orthographic projection of the second light emitting portion 302 on the driving backplane 100 may be located in the concave area K, and the shape of this part may be similar to that of the concave area K, both of which are triangles, while the shape of another part located outside the concave area K may be different from that of the concave area K. For example, the shape of another part located outside the concave area may be approximately rectangular as a whole.

[0082] according to Fig.11 The shape of the concave area K shown in FIG. 1 and the arrangement of the first light emitting portion 301 and the adjacent second light emitting portion 302 can refer to FIG. Fig.12 The shape of the orthographic projection of the entire second light-emitting portion 302 on the driving backplane 100 can be a triangle, which is similar to the shape of the concave area K.

[0083] When the second sub-boundary 22 is a curved boundary, please refer to Fig.13 and Fig.15 , the first sub-boundary 21 can be parallel to the first direction X. The first sub-boundary 21 can be arranged with the second sub-boundary 22 along the second direction Y, that is, the first sub-boundary 21 and the second sub-boundary 22 can have two relative positional relationships. In this way, the concave area K surrounded by the first sub-boundary 21, the second sub-boundary 22 and the first boundary 10 can be Fig.13 The shape shown or Fig.15 Shape shown.

[0084] according to Fig.13 The shape of the concave area K shown in FIG. 1 and the arrangement of the first light emitting portion 301 and the adjacent second light emitting portion 302 can refer to FIG. Fig.14 A portion of the orthographic projection of the second light emitting portion 302 on the driving backplane 100 may be located in the concave region K, and the shape of this portion may be similar to the shape of the concave region K, while the shape of another portion located outside the concave region K is different from the shape of the concave region K. For example, the shape of another portion located outside the concave region may be approximately rectangular as a whole.

[0085] according to Fig.15 The shape of the concave area K shown in FIG. 1 and the arrangement of the first light emitting portion 301 and the adjacent second light emitting portion 302 can refer to FIG. Fig.16A portion of the orthographic projection of the second light-emitting portion 302 on the driving backplane 100 may be located within the recessed area K, and the shape of this portion may be similar to that of the recessed area K, while the shape of another portion located outside the recessed area K may be different from that of the recessed area K.

[0086] In the second exemplary implementation, please refer to Fig.17 and Fig.19 , the second boundary 20 may include not only the first subboundary 21 and the second subboundary 22, but also the third subboundary 23. The first end of the first subboundary 21 and the first end of the second subboundary 22 may be connected to the two ends of the first boundary 10, respectively, and the two ends of the third subboundary may be connected to the second end of the first subboundary 21 and the second end of the second subboundary 22, respectively. The first subboundary 21, the second subboundary 22 and the third subboundary may all be straight line boundaries.

[0087] Among them, please refer to Fig.17 , the first sub-boundary 21 may intersect with the first direction X and may intersect with the second direction Y, the second sub-boundary 22 may also intersect with the first direction X and may intersect with the second direction Y, the third sub-boundary may be parallel to the second direction Y, and the first boundary 10 may be parallel to the second direction Y, that is, the third sub-boundary may be parallel to the first boundary 10, and the third sub-boundary may intersect with the first sub-boundary 21 and the second sub-boundary 22. In this way, the concave area K surrounded by the first sub-boundary 21, the second sub-boundary 22, the third sub-boundary and the first boundary 10 may be in the shape of an isosceles trapezoid.

[0088] according to Fig.17 The shape of the concave area K shown in FIG. 1 and the arrangement of the first light emitting portion 301 and the adjacent second light emitting portion 302 can refer to FIG. Fig.18 A part of the orthographic projection of the second light-emitting portion 302 on the driving backplane 100 may be located in the recessed area K, and the shape of this part may be similar to that of the recessed area K, that is, an isosceles trapezoid, and the shape of the orthographic projection of the entire second light-emitting portion 302 on the driving backplane 100 may also be an isosceles trapezoid.

[0089] Alternatively, please refer to Fig.19 , the first sub-boundary 21 may intersect with the first direction X and may intersect with the second direction Y, the second sub-boundary 22 may be parallel to the first direction X, the third sub-boundary may be parallel to the second direction Y, and the first boundary 10 may be parallel to the second direction Y, that is, the third sub-boundary may be parallel to the first boundary 10. In this way, the concave area K surrounded by the first sub-boundary 21, the second sub-boundary 22, the third sub-boundary and the first boundary 10 may be in the shape of a right-angled trapezoid.

[0090] according to Fig.19The shape of the concave area K shown in FIG. 1 and the arrangement of the first light emitting portion 301 and the adjacent second light emitting portion 302 can refer to FIG. Fig. 20 A portion of the orthographic projection of the second light-emitting portion 302 on the driving backplane 100 may be located within the recessed area K, and the shape of this portion may be similar to that of the recessed area K, that is, a right-angled trapezoid, and the shape of the orthographic projection of the entire second light-emitting portion 302 on the driving backplane 100 may also be a right-angled trapezoid.

[0091] In summary, an embodiment of the present application provides a display panel, which includes: a plurality of first light-emitting parts, a plurality of second light-emitting parts, and a plurality of third light-emitting parts. The orthographic projection of the first light-emitting part on the driving backplane has two concave areas arranged opposite to each other in the first direction, and the orthographic projection of the second light-emitting part on the driving backplane is at least located in the concave area. In this way, a concave-convex fit can be achieved between the first light-emitting part and the two adjacently distributed second light-emitting parts, so that the multiple light-emitting parts can be arranged more closely. In this way, the space of the display panel can be reasonably utilized, the screen space utilization rate of the display panel can be improved, and the display panel can be arranged with more light-emitting parts, so that the light-emitting area can be increased and the pixel opening rate of the display panel can be improved.

[0092] The embodiment of the present application also provides a method for manufacturing a display panel, which can be used to manufacture a display panel 000. The method for manufacturing a display panel may include: forming a pixel definition layer on one side of a driving backplane, the pixel definition layer having a plurality of pixel openings; forming a light-emitting layer on a side of the pixel definition layer away from the driving backplane, the light-emitting layer including a plurality of light-emitting parts, the plurality of light-emitting parts corresponding to the plurality of pixel openings one by one, and the light-emitting parts being located in the corresponding pixel openings. The following embodiment will describe in detail each step in the method for manufacturing a display panel:

[0093] Step S101: providing a driving backplane having a plurality of thin film transistors and a plurality of first electrodes.

[0094] In the examples of this application, please refer to Figure 3 The plurality of first electrodes 400 may be located on one side of the driving backplane 100, and the first electrodes 400 may be anodes. The driving backplane 100 may include a plurality of thin film transistors 104, and the plurality of thin film transistors 104 may be electrically connected to the plurality of first electrodes 400 in a one-to-one correspondence, thereby driving the display panel 000 to display images.

[0095] Step S102: forming a pixel definition layer on one side of the driving backplane.

[0096] A pixel definition film is formed on a driving backplane 100 having a plurality of thin film transistors 104, and a single patterning process is performed on the pixel definition film to form a pixel definition layer 200. The pixel definition layer 200 has a plurality of pixel openings U, and the plurality of pixel openings U correspond one-to-one to the plurality of first electrodes 400, and the orthographic projections of the pixel openings U on the driving backplane 100 are located within the orthographic projections of the corresponding first electrodes 400 on the driving backplane 100. The single patterning process may include: photoresist coating, exposure, development, etching, and photoresist stripping.

[0097] Step S103 , forming a light-emitting layer on a side of the pixel definition layer away from the driving backplane.

[0098] The light-emitting layer 300 may include a plurality of light-emitting portions, and the plurality of light-emitting portions correspond to the plurality of pixel openings U one by one, and the light-emitting portions may be located in the corresponding pixel openings U. The plurality of light-emitting portions in the light-emitting layer 300 may be formed by evaporation using a fine metal mask. The fine metal mask includes a plurality of evaporation openings, and after the evaporation material is attached to the driving backplane 100 through the evaporation openings, a plurality of light-emitting portions may be formed on the driving backplane 100.

[0099] like Figure 1 As shown, the plurality of light-emitting portions may include a plurality of first light-emitting portions 301, a plurality of second light-emitting portions 302, and a plurality of third light-emitting portions 303. The orthographic projection of the first light-emitting portion 301 on the driving backplane 100 may have two concave areas K arranged opposite to each other in the first direction X, the orthographic projection of the second light-emitting portion 302 on the driving backplane 100 may be partially located in the concave area K, or may be completely located in the concave area K, and the orthographic projection of the third light-emitting portion 303 on the driving backplane 100 may be located on one side of the orthographic projection of the first light-emitting portion 301 on the driving backplane 100 in the second direction Y. The first direction X may intersect with the second direction Y, and the light-emitting color of the third light-emitting portion 303 may be blue, the light-emitting color of the first light-emitting portion 301 may be one of red and green, and the light-emitting color of the second light-emitting portion 302 may be the other of red and green.

[0100] The formation process of the light-emitting layer 300 is as follows: on the side of the pixel definition layer 200 away from the driving backplane 100, a fine metal mask is first used to form a plurality of third light-emitting portions 303, then another fine metal mask is used to form a plurality of second light-emitting portions 302, and finally another fine metal mask is used to form a plurality of first light-emitting portions 301. The evaporation order of the first light-emitting portion 301, the second light-emitting portion 302 and the third light-emitting portion 303 can be interchanged.

[0101] Step S104: forming a second electrode on a side of the light-emitting layer away from the driving backplane.

[0102] The second electrode 500 is formed on the driving backplane 100 formed with the light emitting layer 300 by a sputtering process. The second electrode 500 may be a cathode.

[0103] In summary, the embodiment of the present application provides a method for manufacturing a display panel, and the manufactured display panel includes: a plurality of first light-emitting parts, a plurality of second light-emitting parts, and a plurality of third light-emitting parts. The orthographic projection of the first light-emitting part on the driving backplane has two concave areas arranged opposite to each other in a first direction, and the orthographic projection of the second light-emitting part on the driving backplane is at least located within the concave area. In this way, a concave-convex fit can be achieved between the first light-emitting part and the two adjacently distributed second light-emitting parts, so that the multiple light-emitting parts can be arranged more closely. In this way, the space of the display panel can be reasonably utilized, the screen space utilization rate of the display panel is improved, and more light-emitting parts can be arranged on the display panel, so that the light-emitting area can be increased and the pixel opening rate of the display panel can be improved.

[0104] The embodiment of the present application also provides a display device, which can be any product or component with a display function, such as a mobile phone, a tablet computer, a television, a display, a laptop computer, a digital photo frame, a navigator, etc. The display device may include a drive component and a display panel, and the display panel may be the display panel 000 in the above embodiment. The drive component may be electrically connected to the display panel 000, so as to drive the display panel 000 to display a picture.

[0105] It should be noted that in the accompanying drawings, the sizes of layers and regions may be exaggerated for clarity of illustration. It is also understood that when an element or layer is referred to as being "on" another element or layer, it may be directly on the other element, or there may be an intermediate layer. In addition, it is understood that when an element or layer is referred to as being "under" another element or layer, it may be directly under the other element, or there may be more than one intermediate layer or element. In addition, it is also understood that when a layer or element is referred to as being "between" two layers or two elements, it may be the only layer between the two layers or two elements, or there may also be more than one intermediate layer or element. Similar reference numerals throughout the text indicate similar elements.

[0106] In the present application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. The term "plurality" refers to two or more than two, unless otherwise clearly defined.

[0107] The above description is only an optional embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A display panel, characterized in that: include: Driving backplane, pixel definition layer and light emitting layer; The pixel definition layer is located on one side of the driving backplane, and the pixel definition layer has a plurality of pixel openings; The light-emitting layer is located on a side of the pixel definition layer away from the driving backplane, the light-emitting layer includes a plurality of light-emitting portions, the plurality of light-emitting portions correspond to the plurality of pixel openings one by one, and the light-emitting portions are located in the corresponding pixel openings; Among them, the multiple light-emitting parts include multiple first light-emitting parts, multiple second light-emitting parts and multiple third light-emitting parts; the orthographic projection of the first light-emitting part on the driving backplane has two concave areas arranged opposite to each other in a first direction, and the orthographic projection of the second light-emitting part on the driving backplane is at least located in the concave areas; the orthographic projection of the third light-emitting part on the driving backplane is located on one side of the orthographic projection of the first light-emitting part on the driving backplane in the second direction; the first direction intersects with the second direction.

2. The display panel according to claim 1, characterized in that: The length of the third light-emitting portion in the first direction is greater than the minimum width of the first light-emitting portion in the first direction and the sum of the maximum widths of two second light-emitting portions in the two recessed areas distributed in the same first light-emitting portion in the first direction.

3. The display panel according to claim 2, characterized in that: For the two second light-emitting portions distributed in the two recessed areas in the same first light-emitting portion, the distance between the side of one second light-emitting portion facing away from the first light-emitting portion and the side of the other second light-emitting portion facing away from the first light-emitting portion is equal to the length of the third light-emitting portion in the first direction.

4. The display panel according to claim 3, characterized in that: For the two second light-emitting portions distributed in the two recessed areas in the same first light-emitting portion, the side of one second light-emitting portion facing away from the first light-emitting portion is flush with one side of the adjacent third light-emitting portion, and the side of the other second light-emitting portion facing away from the first light-emitting portion is flush with the other side of the adjacent third light-emitting portion.

5. The display panel according to any one of claims 1 to 4, characterized in that: An area of ​​an orthographic projection of the third light-emitting portion on the driving backplane is larger than an area of ​​an orthographic projection of the first light-emitting portion on the driving backplane, and is larger than an area of ​​an orthographic projection of the second light-emitting portion on the driving backplane.

6. The display panel according to claim 5, characterized in that: The area of ​​the orthographic projection of the third light-emitting portion on the driving backplane is greater than or equal to the sum of the area of ​​the orthographic projection of the first light-emitting portion on the driving backplane and the area of ​​the orthographic projection of the two second light-emitting portions distributed in the two recessed areas in the same first light-emitting portion on the driving backplane.

7. The display panel according to claim 5, characterized in that: The light emitting color of the first light emitting portion is one of red and green, the light emitting color of the second light emitting portion is the other of red and green, and the light emitting color of the third light emitting portion is blue.

8. The display panel according to any one of claims 1 to 4, 6 to 7, characterized in that: The concave area has a first boundary and a second boundary arranged opposite to each other in the first direction; The first boundary is a straight line boundary parallel to the second direction; The second boundary is an arc-shaped boundary, and the two ends of the arc-shaped boundary are respectively connected to the two ends of the first boundary; or, the second boundary at least includes a first sub-boundary and a second sub-boundary arranged in the second direction, and the first end of the first sub-boundary and the first end of the second sub-boundary are respectively connected to the two ends of the first boundary.

9. The display panel according to claim 8, characterized in that: In the case where the second boundary at least includes the first subboundary and the second subboundary arranged in the second direction, the second end of the first subboundary is connected to the second end of the second subboundary; wherein the first subboundary and the second subboundary are both straight line boundaries intersecting the first direction and the second direction; or, the first subboundary is a straight line boundary parallel to the first direction, and the second subboundary is a curved line boundary; Alternatively, the second boundary also includes a third sub-boundary, and both ends of the third sub-boundary are respectively connected to the second end of the first sub-boundary and the second end of the second sub-boundary; wherein the first sub-boundary and the second sub-boundary are both straight line boundaries intersecting with the first direction and the second direction, and the third sub-boundary is a straight line boundary parallel to the second direction; or, the first sub-boundary is a straight line boundary intersecting with the first direction and the second direction, the second sub-boundary is a straight line boundary parallel to the first direction, and the third sub-boundary is a straight line boundary parallel to the second direction.

10. A display device, characterized in that: It comprises a driving component and a display panel electrically connected to the driving component, wherein the display panel comprises the display panel according to any one of claims 1 to 9.

Images