Display panel and display device

Abstract

Disclosed in the present invention are a display panel and a display device. The display panel comprises: a first electrode layer, an organic light-emitting layer, and a second electrode layer which are stacked on a base substrate. The organic light-emitting layer comprises a plurality of pixel unit groups arranged in an array; each pixel unit group comprises a plurality of pixel units arranged in an array, and each pixel unit comprises at least two sub-pixels; and a first gap between adjacent pixel units in a pixel unit group in a first direction is smaller than a second gap between adjacent pixel unit groups in the first direction. According to embodiments of the present invention, a light-emitting unit layer is configured to be the plurality of pixel unit groups arranged in an array, each pixel unit group comprises pixel units arranged in an array, and a gap between adjacent pixel unit groups in a specified direction is configured to be greater than the distance between pixel units in a pixel unit group in the corresponding direction, so that seamless tiling can be realized.

Description

Display panel and display device

[0001] This disclosure claims priority to Chinese patent application No. 202311810709.3, filed on December 26, 2023, and entitled “Display Panel and Display Device,” the entire contents of which are incorporated by reference into this disclosure. Technical Field

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

[0003] With the development of industries like outdoor advertising and indoor education, large-screen displays have become a significant segment of the display industry. A typical example is a spliced ​​screen, also known as a spliced ​​display screen or spliced ​​display panel. Spliced ​​screens are typically composed of multiple liquid crystal displays (LCDs) or mini LEDs (Micro Light Emitting Diodes).

[0004] Summary of the Invention

[0005] A first aspect of the present disclosure provides a display panel, comprising: a base substrate and a light-emitting unit layer located on the base substrate, wherein the light-emitting unit layer comprises: a plurality of pixel unit groups arranged in an array;

[0006] The pixel unit group includes a plurality of pixel units arranged in an array, and the pixel unit includes at least two sub-pixels;

[0007] A first distance between adjacent pixel units in the pixel unit group in the first direction is smaller than a second distance between adjacent pixel unit groups in the first direction.

[0008] In some optional embodiments, a first ratio of the second spacing to the first spacing is (1, 1.5).

[0009] In some optional embodiments, half of the second spacing b2 satisfies the relationship:

[0010] Wherein, pitch represents the spacing between different pixel units in the pixel unit group, AR represents the aperture ratio of the display panel, PDL gap represents the spacing between different sub-pixels in the pixel unit, and b1 represents half of the first spacing.

[0011] In some optional embodiments, the display panel further includes: a housing;

[0012] The light-emitting unit layer includes a first pixel unit closest to the housing in the first direction, a distance from a side of the first pixel unit close to the housing to a side of the housing far from the first pixel unit in the first direction is a first distance, half of the second distance is a second distance, and the first distance is less than or equal to the second distance.

[0013] In some optional embodiments, a third spacing between adjacent pixel units in the pixel unit group in the second direction is smaller than a fourth spacing between adjacent pixel unit groups in the second direction, and the first direction intersects the second direction.

[0014] In some optional embodiments, a second ratio of the fourth interval to the third interval is (1, 1.5).

[0015] In some optional embodiments, the first ratio is equal to the second ratio.

[0016] In some optional embodiments, the fourth spacing is equal to the second spacing.

[0017] In some optional embodiments, the third spacing is equal to the first spacing.

[0018] In some optional embodiments, half of the fourth interval a2 satisfies the relationship:

[0019] Wherein, pitch represents the spacing between different pixel units in the pixel unit group, AR represents the aperture ratio of the display panel, PDL gap represents the spacing between different sub-pixels in the pixel unit, and a1 represents half of the third spacing.

[0020] In some optional embodiments, the display panel further includes: a housing;

[0021] The light-emitting unit layer includes a second pixel unit closest to the housing in the second direction, a distance from a side of the second pixel unit close to the housing to a side of the housing far from the second pixel unit in the second direction is a third distance, half of the fourth spacing is a fourth distance, and the third distance is less than or equal to the fourth distance.

[0022] In some optional embodiments, the first direction and the second direction are perpendicular.

[0023] In some optional embodiments, the first direction is the direction of pixel columns in a plurality of pixel units arranged in an array, or the first direction is the direction of pixel rows in a plurality of pixel units arranged in an array.

[0024] In some optional embodiments, the pixel unit includes a first sub-pixel, a second sub-pixel, and a third sub-pixel arranged in a row or a column, and the first sub-pixel, the second sub-pixel, and the third sub-pixel have different colors.

[0025] In some optional embodiments, the pixel unit includes: a first sub-pixel, a second sub-pixel, and a third sub-pixel, and the first sub-pixel, the second sub-pixel, and the third sub-pixel have different colors;

[0026] The first sub-pixel and the second sub-pixel are arranged in a first pixel column, and the third sub-pixel is arranged in a second pixel column. The first pixel column and the second pixel column are alternately arranged along an extension direction of the pixel row, and there is an overlapping portion in the orthographic projections of the first sub-pixel and the third sub-pixel along the extension direction of the pixel row, and there is an overlapping portion in the orthographic projections of the second sub-pixel and the third sub-pixel along the extension direction of the pixel row.

[0027] In some optional embodiments, the number of pixel rows and the number of pixel columns in the pixel unit group are equal.

[0028] In some optional embodiments, the pixel unit group includes four pixel units, or the pixel unit group includes nine pixel units.

[0029] In some optional embodiments, the multiple pixel units of the pixel unit group include a third pixel unit, a fourth pixel unit, a fifth pixel unit and a sixth pixel unit, the third pixel unit and the fourth pixel unit include sub-pixels of a first color and sub-pixels of a second color, the fifth pixel unit and the sixth pixel unit include sub-pixels of the second color and sub-pixels of a third color, and the first color, the second color and the third color are different.

[0030] In some optional embodiments, the spacing between different sub-pixels in the pixel unit is [18 microns, 60 microns].

[0031] A second aspect of the present disclosure provides a display device, comprising: a spliced ​​display panel, the spliced ​​display panel being obtained by splicing a plurality of display panels, the display panel comprising: a base substrate and a light-emitting unit layer located on the base substrate, the light-emitting unit layer comprising: a plurality of pixel unit groups arranged in an array;

[0032] The pixel unit group includes a plurality of pixel units arranged in an array, and the pixel unit includes at least two sub-pixels;

[0033] A first distance between adjacent pixel units in the pixel unit group in the first direction is smaller than a second distance between adjacent pixel unit groups in the first direction.

[0034] In some optional embodiments, the display panel includes a housing, and adjacent display panels among the plurality of display panels are spliced ​​together via their respective housings. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0036] FIG1 is a schematic partial enlarged view of a display panel according to an embodiment of the present disclosure;

[0037] FIG2 is a schematic diagram showing a splicing process of display panels according to an embodiment of the present disclosure;

[0038] FIG3 shows a schematic cross-sectional view taken along line AA′ in FIG1 ;

[0039] FIG4 is a schematic diagram showing a display panel according to an embodiment of the present disclosure;

[0040] FIG5 is a schematic partial enlarged view of a display panel according to another embodiment of the present disclosure;

[0041] FIG6 shows a schematic partial enlarged view of a display panel according to another embodiment of the present disclosure;

[0042] FIG. 7 shows a schematic partial enlarged view of a display panel according to another embodiment of the present disclosure. DETAILED DESCRIPTION

[0043] To more clearly illustrate the present disclosure, the present disclosure is further described below in conjunction with preferred embodiments and accompanying drawings. Similar components in the accompanying drawings are represented by the same reference numerals. Those skilled in the art should understand that the specific description below is illustrative rather than restrictive and should not be used to limit the scope of protection of the present disclosure.

[0044] It should be noted that, the terms “on…”, “formed on…” and “disposed on…” used herein may mean that one layer is directly formed or disposed on another layer, or may mean that one layer is indirectly formed or disposed on another layer, i.e., there are other layers between the two layers.

[0045] When a spliced ​​screen is made of LCD panels, the presence of a splicing gap is unavoidable due to the LCD's borders. When a spliced ​​screen is made of Mini LED displays, the difficulty of mass transfer technology required to achieve refined displays leads to significant costs. Therefore, OLED spliced ​​screens, made of organic light-emitting diode (OLED) displays, could become an important development direction in this field.

[0046] However, similar to Mini LED displays, as pixel pitches evolve from P1.x to P0.x, the gaps between the resulting spliced ​​screens become a difficult problem that needs to be solved. Mini LED displays have a small luminous area, and the spacing between sub-pixels accounts for a large proportion of the display, making them easier to achieve seamless splicing. However, they are typically soldered to the substrate using surface mount devices (SMD) or chip on board (COB) processes. As pixel pitches evolve towards P0.x, mass transfer and soldering processes become bottlenecks. The luminescent material layer of OLED displays is achieved using an evaporation process, which inherently does not present the problem of mass transfer. However, the process characteristics of OLED displays result in a physical packaging frame, and since the pixels in OLED displays have a larger luminous area than those in LEDs, this is not conducive to achieving seamless splicing of OLED displays. In short, for OLED displays, neither the packaging distance nor the pixel area can be reduced. Therefore, the current seamless splicing technology for P0.x OLED displays is considered a difficult problem to overcome.

[0047] Based on one of the above problems, the present disclosure discloses a display panel. The display panel includes: a base substrate and a light-emitting unit layer located on the base substrate. The light-emitting unit layer includes: a plurality of pixel unit groups arranged in an array. The pixel unit group includes a plurality of pixel units arranged in an array, and the pixel unit includes at least two sub-pixels. In one possible example, the colors of at least two sub-pixels in the same pixel unit are different. A first spacing between adjacent pixel units in a pixel unit group in a first direction is less than a second spacing between adjacent pixel unit groups in the first direction.

[0048] In some optional embodiments, a third spacing between adjacent pixel units in a pixel unit group in the second direction is smaller than a fourth spacing between adjacent pixel unit groups in the second direction, and the first direction intersects the second direction.

[0049] When the display panel is used for a splicing screen, the splicing screen can be obtained by splicing multiple display panels along one or more display panels. At this time, in order to achieve seamless splicing between multiple display panels, the spacing between adjacent pixel units in the pixel unit group in the splicing direction needs to be smaller than the spacing between adjacent pixel unit groups in the splicing direction. For example, when the splicing screen is obtained by splicing multiple display panels along a first direction, if the first spacing between adjacent pixel units in the pixel unit group in the first direction is smaller than the second spacing between adjacent pixel unit groups in the first direction, seamless splicing of the splicing screen can be achieved. For another example, when the splicing screen is obtained by splicing multiple display panels along the first direction and the second direction respectively, if the first spacing between adjacent pixel units in the pixel unit group in the first direction is smaller than the second spacing between adjacent pixel unit groups in the first direction, and the third spacing between adjacent pixel units in the pixel unit group in the second direction is smaller than the fourth spacing between adjacent pixel unit groups in the second direction, seamless splicing of the splicing screen can be achieved. As shown in FIG1 , a first spacing between adjacent pixel units 101-1 in a pixel unit group 10-1 in a first direction is smaller than a second spacing between adjacent pixel units 101-1 in the first direction, and a third spacing between adjacent pixel units 101-1 in a second direction is smaller than a fourth spacing between adjacent pixel units 10-1 in the second direction. The first direction is the Y direction in FIG1 , and the second direction is the X direction in FIG1 .

[0050] For example, the first direction and the second direction are perpendicular. For example, the first direction is the direction of the pixel columns in the plurality of pixel units arranged in the array, and the second direction is the direction of the pixel rows in the plurality of pixel units arranged in the array. Alternatively, the first direction is the direction of the pixel rows in the plurality of pixel units arranged in the array, and the second direction is the direction of the pixel columns in the plurality of pixel units arranged in the array.

[0051] As shown in Figure 1, a1 represents half of the first spacing between adjacent pixel units 101-1 in the first direction within the pixel unit group 10-1, a2 represents half of the second spacing between adjacent pixel units 101-1 in the first direction, b1 represents half of the third spacing between adjacent pixel units 101-1 in the second direction within the pixel unit group 10-1, and b2 represents half of the fourth spacing between adjacent pixel units 101-1 in the second direction. The first spacing between adjacent pixel units 101-1 in the first direction within the pixel unit group 10-1 is less than the second spacing between adjacent pixel units 101-1 in the first direction, that is, a2>a1. The third spacing between adjacent pixel units 101-1 in the second direction within the pixel unit group 10-1 is less than the fourth spacing between adjacent pixel units 101-1 in the second direction, that is, b2>b1.

[0052] With reference to FIG2 , FIG2 shows a schematic diagram of the effect of splicing the display panels B1 and B2 provided by the present disclosure. When the two display panels are spliced, the distance between the adjacent pixel unit groups 10-1 at the splicing point is w2, and this value is twice the package frame of a display panel. As can be seen from FIG2 , according to the arrangement of the display panel in the present disclosure, the four pixel units 101-1 in the display panel are a pixel unit group 10-1, and the four pixel units 101-1 in the pixel unit group 10-1 are all close to the center of the pixel unit group 10-1. In this way, since the distance between adjacent pixel unit groups 10-1 in one direction (X direction or Y direction) in the display panel is larger than the distance between adjacent pixel units 101-1 in the same direction in the group, the obviousness of the splicing gap is visually reduced, and the pressure on the splicing gap is reduced, so that even if the display panel has a package frame due to process limitations, the effect of seamless splicing can be improved.

[0053] From the above, it can be seen that in the embodiment of the present disclosure, by setting the light-emitting unit layer of the display panel to include a plurality of pixel unit groups arranged in an array, and the pixel unit group includes a plurality of pixel units arranged in an array, and setting the spacing between adjacent pixel unit groups in a specified direction to be greater than the distance between the pixel units in the pixel unit group in the corresponding direction, when the display panel is used for a spliced ​​screen, the splicing gaps between the display panels appear less obvious under the contrast of the pixel units, thereby enabling seamless splicing of the display panels.

[0054] It should be noted that the present disclosure is not limited to being applied to a spliced ​​screen obtained by splicing multiple display panels along one direction or along two directions. The present disclosure can also be applied to a spliced ​​screen obtained by splicing multiple display panels along more directions. In this case, the arrangement of pixel unit groups in the pixel unit groups in the light-emitting unit layer and the arrangement of pixel units in the pixel unit groups are not limited to array arrangements and can be adjusted based on application requirements. However, it is necessary to ensure that the spacing between adjacent pixel units in the pixel unit group in each of the multiple splicing directions is less than the spacing between adjacent pixel unit groups in the one-to-one corresponding splicing directions. In this case, seamless splicing of the spliced ​​screen can be achieved.

[0055] It should also be pointed out that through the setting disclosed in the present invention, the relationship between the distance between pixel unit groups and the distance between pixel units within a pixel unit group is optimized on a pixel unit group basis, so that there is no need to change the aperture ratio of the sub-pixel, or in other words, there is no need to change the light-emitting area of ​​the sub-pixel, and a seamless splicing effect can be achieved while meeting the life and color requirements of the display panel.

[0056] That is, as shown in FIG1 , in the embodiment of the present disclosure, there is no need to adjust the PDL gap between sub-pixels within pixel unit 101-1. For example, if the sub-pixel gap within a conventional pixel unit is [18 microns, 60 microns], then the PDL gap in the display panel of the present disclosure can simply be [18 microns, 60 microns]. In this case, there is no need to ensure that the pixel density (Pixels Per Inch, PPI) of the display panel remains unchanged compared to the PPI of conventional display panels.

[0057] In an embodiment of the present disclosure, for two display panels spliced ​​together, the splicing gap represents the sum of the distances w2 between the outer edges of the peripheral pixel unit groups of the two display panels and the outer edges of the display panels. The peripheral pixel unit group of a display panel is the pixel unit group closest to the outer edge of the display panel. The outer edge of a display panel refers to the edge of the display panel used for splicing with other display panels. For example, as shown in FIG2 , the dotted line shared by display panels B1 and B2 represents the outer edge of display panel B1, and the peripheral pixel unit group of display panel B1 is the pixel unit group closest to the dotted line shared by display panels B1 and B2. In some implementation scenarios, the display panel further includes: a housing. Then the peripheral pixel unit group of the display panel is the pixel unit closest to the housing among all the pixel unit groups of the display panel. The outer edge of the display panel refers to the edge of the outer edge of the display panel used for splicing with other display panels. The fact that the human eye cannot recognize the splicing gap means that the human eye cannot recognize the difference between the splicing gap w2 and the distance w1 between adjacent pixel unit groups.

[0058] When the display panel further includes a housing, the light-emitting unit layer includes a first pixel unit closest to the housing in a first direction, a first distance is defined as the distance between a side of the first pixel unit closest to the housing and a side of the housing further away from the first pixel unit in the first direction, and a second distance is defined as half of the second distance. If the display panel is capable of seamless splicing in the first direction, the first distance must be less than or equal to the second distance.

[0059] When the display panel further includes a housing, the light-emitting unit layer includes a second pixel unit closest to the housing in the second direction, a distance from a side of the second pixel unit closest to the housing to a side of the housing further away from the second pixel unit in the second direction is a third distance, and half of the fourth distance is a fourth distance. If the display panel can achieve seamless splicing in the first direction, the third distance must be less than or equal to the fourth distance.

[0060] It should be noted that the above two situations are when the first distances and the third distances are equal in all display panels in the spliced ​​display panel. However, it is possible that the first distances and / or the third distances of different display panels in the spliced ​​display panel are unequal. In this case, for two display panels spliced ​​at the same splicing gap in the spliced ​​display panel, the distance between the outer edges of the first pixel units near the splicing gap in the two display panels must be less than or equal to the spacing in the same direction between adjacent pixel unit groups in the two display panels.

[0061] In one possible example, as shown in FIG3 , a display panel includes a base substrate 100 and a light-emitting unit layer 200 located on the base substrate 100. The light-emitting unit layer 200 includes a first electrode layer 201, an organic light-emitting layer 202, and a second electrode layer 203 stacked in sequence. In other words, the display panel in the example of the embodiment of the present disclosure is an OLED display panel.

[0062] FIG3 shows an exemplary cross-sectional structure of the display panel. Referring to FIG3 , the light-emitting unit layer 200 further includes a pixel-defining layer 204 that defines sub-pixels. A sub-pixel is the smallest light-emitting unit of the display panel of the present disclosure. A driving circuit layer 300 is also provided between the base substrate 100 and the light-emitting unit layer 200. The driving circuit layer 300 drives the first electrode layer 201 via the driving transistors therein. Optionally, one or more buffer layers 400 may be provided between the driving circuit layer 300 and the base substrate 100. Optionally, a planarization layer 500 may be provided between the driving circuit layer 300 and the light-emitting unit layer 200. An encapsulation layer 600 may also be provided on the light-emitting unit layer 200.

[0063] For example, as shown in FIG3 , the driving transistor includes: an active layer 301, a gate insulating layer 302, a gate 303, a dielectric layer 304, and a source and drain electrode 305. The active layer 301 may be a polysilicon layer. The material of the gate insulating layer 302 may be other inorganic insulating materials such as silicon oxide, silicon nitride, or silicon oxynitride. The gate insulating layer 302 may be a single-layer or multi-layer structure. The gate 303 may be a multi-layer metal structure, which may be one of molybdenum / aluminum / molybdenum (Mo / Al / Mo), molybdenum / copper (Mo / Cu), molybdenum-niobium alloy / copper (MoNb / Cu), molybdenum-niobium alloy / copper / molybdenum-titanium alloy (MoNb / Cu / MoTi), or a stacked metal structure. The dielectric layer 304 and the gate insulating layer 302 have through holes, and the source and drain electrodes 305 are formed by magnetron sputtering of metal material. The film layer combination of the source and drain electrodes 305 can be selected from one of Mo / Al / Mo, Mo / Cu, MoNb / Cu, MoNb / Cu / MoTi, etc., or a stacked metal structure thereof.

[0064] Of course, the above structural layers are merely exemplary; the specific layer structure of the display panel may vary depending on the display product. For example, the drive transistor may also have a bottom-gate structure, and the drive circuit layer 300 may include more than one layer with a gate. In other words, any product that meets the structural requirements of an OLED display panel is suitable for use in the display panels of the embodiments of the present disclosure.

[0065] In a possible example, the light emitting unit layer 200 includes a plurality of pixel unit groups 10-1 arranged in an array. Each pixel unit group 10-1 includes a plurality of pixel units 101-1 arranged in an array. Each pixel unit 101-1 includes three sub-pixels.

[0066] Referring to Figures 1, 2, and 4, in this example, pixel unit 101-1 includes a first subpixel, a second subpixel, and a third subpixel. The first subpixel, the second subpixel, and the third subpixel have different colors. The first subpixel and the second subpixel are arranged in a first pixel column along a first direction (the Y direction in Figure 1), and the third subpixel is arranged alone in a second pixel column. In the display panel, the first pixel column and the second pixel column are arranged alternately along the direction in which the pixel row extends (i.e., the second direction in Figure 1), and the orthographic projections of the first subpixel and the third subpixel along the direction in which the pixel row extends (i.e., the second direction in Figure 1) overlap, and the orthographic projections of the second subpixel and the third subpixel along the direction in which the pixel row extends (i.e., the second direction in Figure 1) overlap. Optionally, pixel unit 101-1 may be an RGB pixel, i.e., the first subpixel, the second subpixel, and the third subpixel are red, green, and blue, respectively. Of course, the color order of the subpixels within pixel unit 101-1 in this example may also vary, depending on the specific product.

[0067] It should be noted that although the examples in Figures 1, 2 and 4 show that a pixel unit group 10-1 includes four pixel units 101-1 and the arrangement of the four pixel units 101-1, the embodiments of the present disclosure are not limited to this, and the pixel units in the pixel unit group can also be arranged in other ways.

[0068] For example, the pixel unit includes a first sub-pixel, a second sub-pixel, and a third sub-pixel arranged in a row or a column, and the colors of the first sub-pixel, the second sub-pixel, and the third sub-pixel are different. For example, as shown in Figure 5, the pixel unit group 10-3 includes four pixel units 101-3, and the pixel unit group 101-3 includes a first sub-pixel, a second sub-pixel, and a third sub-pixel arranged along a first direction. The colors of the first sub-pixel, the second sub-pixel, and the third sub-pixel are different. Of course, although not shown, the pixel unit group 101-3 may optionally include a first sub-pixel, a second sub-pixel, and a third sub-pixel arranged along a second direction, and the colors of the first sub-pixel, the second sub-pixel, and the third sub-pixel are different, and the display effect is the same as when arranged along the first direction.

[0069] It should be noted that, although the examples of Figures 1, 2 and 4 show that a pixel unit group 10-1 includes four pixel units 101-1, the embodiments of the present disclosure are not limited to this, and a pixel unit group may also include other numbers of pixel units. Taking into account that the current application scenarios of spliced ​​display panels are generally large screens or ultra-large screens, the PPI of the display panel in these application scenarios is much smaller than that of small screens such as mobile phones, so the number of pixel units in the pixel unit group does not need to be too much. For example, the pixel unit group includes nine pixel units. Of course, as the application scenarios of the spliced ​​display panel change, the number of pixel units in the pixel unit group can also be other numbers, which are not listed here. Among them, when the pixel unit group includes four pixel units, the pixel unit group can be said to adopt a four-in-one pixel unit group design. When the pixel unit group includes nine pixel units, the pixel unit group can be said to adopt a nine-in-one pixel unit group design.

[0070] For example, as shown in FIG6 , the plurality of pixel units 101-4 of the pixel unit group 10-4 include a third pixel unit, a fourth pixel unit, a fifth pixel unit, and a sixth pixel unit, each of which includes two sub-pixels. The third pixel unit includes a sub-pixel of a first color and a sub-pixel of a second color. The fourth pixel unit includes a sub-pixel of a first color and a sub-pixel of a second color. The fifth pixel unit includes a sub-pixel of a second color and a sub-pixel of a third color. The sixth pixel unit includes a sub-pixel of a second color and a sub-pixel of a third color. The first color, the second color, and the third color are different.

[0071] In the present disclosure, the number of pixel rows and pixel columns in a pixel unit group is equal. For example, when a pixel unit group includes four pixel units, the pixel unit group includes two pixel rows and two pixel columns. When a pixel unit group includes nine pixel units, the pixel unit group includes three pixel rows and three pixel columns.

[0072] Taking into account that the effect of seamless splicing is based on the resolution of the human eye, in order to prevent the human eye from recognizing the splicing gaps after the display panels are spliced, this application sets the numerical relationship between a1 and a2 as well as b1 and b2 to achieve this purpose.

[0073] In a possible implementation, half of the second spacing between adjacent pixel unit groups 10-1 in the first direction is a2, half of the first spacing between adjacent pixel units 101-1 in each pixel unit group 10-1 in the first direction is a1, and the first ratio a2 / a1 satisfies the relationship (1):

[0074] Half of the fourth spacing between adjacent pixel unit groups 10-1 in the second direction is b2, and half of the third spacing between adjacent pixel units 101-1 in the pixel unit group 10-1 in the second direction is b1. The second ratio b2 / b1 satisfies the relationship (2):

[0075] As shown in Figures 1, 2 and 4, bezel represents the distance from the outer edge of the pixel unit group in the periphery of the display panel to the outer edge of the display panel, pitch represents the spacing between pixel units in the pixel unit group, AR represents the aperture ratio of the display panel, and PDL gap is the spacing between sub-pixels in the pixel unit.

[0076] It should be noted that, in the above two equations, pitch represents the spacing between pixel units in the pixel unit group when the spacing between pixel units in the direction of the pixel row and the spacing in the direction of the pixel column are equal. When the spacing between pixel units in the direction of the pixel row and the spacing in the direction of the pixel column are not equal, the pitch in the above equation (1) represents the spacing between pixel units in the pixel unit group in the first direction, and the pitch in the above equation (2) represents the spacing between pixel units in the pixel unit group in the second direction. Similarly, in the above two equations, PDL gap represents the spacing between sub-pixels in the pixel unit when the spacing between sub-pixels in the pixel unit is equal in the direction of the pixel row and the spacing in the direction of the pixel column. When the spacing between sub-pixels in the pixel unit is not equal in the direction of the pixel row and the spacing in the direction of the pixel column, the PDL gap in the above equation (1) represents the spacing between sub-pixels in the pixel unit in the first direction, and the PDL gap in the above equation (2) represents the spacing between sub-pixels in the pixel unit in the second direction.

[0077] Corresponding to the above relation (1), it can be obtained that half of the second spacing a2 satisfies the relation:

[0078] Corresponding to the above relation (2), it can be obtained that half of the fourth spacing b2 satisfies the relation:

[0079] In the present disclosure, the first ratio of the second spacing to the first spacing may optionally belong to (1, 1.5], which helps to achieve seamless splicing between display panels in the first direction. Similarly, the second ratio of the fourth spacing to the third spacing may optionally belong to (1, 1.5], which helps to achieve seamless splicing between display panels in the second direction. When the spliced ​​display panels are spliced ​​in both the first direction and the second direction, if the first ratio belongs to (1, 1.5] and the second ratio belongs to (1, 1.5], it helps to achieve seamless splicing of the spliced ​​display panels.

[0080] Furthermore, when the display panel meets one or more of the following conditions, the possibility of seamless splicing of the display panel can be further improved. These conditions are: the first ratio is equal to the second ratio, the fourth spacing is equal to the second spacing, and the third spacing is equal to the first spacing. For example, when the first distances in all display panels in the spliced ​​display panel are equal and the third distances are equal, if the first ratio a2 / a1 is equal to the second ratio b2 / b1, and the first ratio and the second ratio both belong to (1,1.5], then regardless of whether the display panel is spliced ​​along the first direction or the second direction, the human eye cannot recognize the splicing gap, thereby achieving multi-screen multi-directional seamless splicing.

[0081] In addition, the present disclosure takes a P0.9 OLED display panel as an example, and sets the distance bezel from the outer edge of the peripheral pixel unit group of the display panel to the outer edge of the display panel to a typical value of 0.256 millimeters (mm), the pitch between pixel units within the pixel unit group to a typical value of 0.9375 mm, and the pixel aperture ratio AR of the display panel to a typical value of 20%.

[0082] Under conventional design, that is, when the distances between all pixel units in the first direction are equal and the distances between all pixel units in the second direction are equal, Therefore, seamless splicing cannot be achieved. In particular, because the distance between sub-pixels PDL gap is greater than or equal to 18 μm and less than or equal to 60 μm, which is much smaller than the pitch between pixel units in the pixel unit group, this value can be ignored in the calculation.

[0083] Differently, when the display panel adopts the structure provided by the present disclosure, for example, a2 / a1=1.5, then, The display panels can be seamlessly spliced ​​along the first direction. Of course, if b2 / b1=1.5, the display panels can be seamlessly spliced ​​along the second direction.

[0084] Since the display panel adopts the structure provided by the present invention and uses the same aperture ratio as the conventional design, the four-in-one pixel unit group design of the present application can greatly reduce the ratio of the splicing frame to the non-luminous pixel spacing without sacrificing the aperture ratio, which is conducive to achieving seamless splicing and reducing the pressure on frame reduction.

[0085] 7 , the pixel unit group 10-2 includes nine pixel units 101-2. Except for the spacing between two pixel units in the first direction, the other numerical relationships are the same as those for the case with four pixel units. The positions of b1, b2, a1, and a2 are marked in FIG7 and will not be repeated here.

[0086] As shown in Figure 5, the relationship between the pixel units 101-3 in the pixel unit group 10-1 and the relationship between the pixel unit group 10-3 are consistent with the above example, so half of the first spacing between adjacent pixel units in each pixel unit group in the first direction is still represented by "a1", half of the second spacing between adjacent pixel unit groups in the first direction is still represented by "a2", half of the third spacing between adjacent pixel units in each pixel unit group in the second direction is still represented by "b1", and b2 represents half of the fourth spacing between adjacent pixel unit groups in the second direction is still represented by "b2", so that the first ratio and the second ratio respectively satisfy the above expression (1), expression (2) and the above related limitations, which will not be repeated here.

[0087] As shown in Figure 6, the relationship between the pixel units 101-4 in the pixel unit group 10-4 and the relationship between the pixel unit group 10-4 are consistent with the above example, so half of the first spacing between adjacent pixel units in the pixel unit group in the first direction is still represented by "a1", half of the second spacing between adjacent pixel unit groups in the first direction is still represented by "a2", half of the spacing between adjacent pixel units in the pixel unit group in the second direction is still represented by "b1", and b2 represents half of the spacing between adjacent pixel unit groups in the second direction is still represented by "b2", so that the first ratio and the second ratio respectively satisfy the above expression (1), expression (2) and the above related limitations, which will not be repeated here.

[0088] Based on the same inventive concept, an embodiment of the present disclosure further provides a display device. The display device includes a spliced ​​display panel. The spliced ​​display panel is obtained by splicing together multiple display panels provided by the present disclosure. In one possible example, the display panel includes a housing, and adjacent display panels in the spliced ​​display panel are spliced ​​together by their respective housings. Since the display panel included in the display device provided by the embodiment of the present disclosure corresponds to the display panel provided by the above embodiment, the previous embodiment also applies to the display device provided by the embodiment of the present disclosure and will not be described in detail in the present embodiment.

[0089] In the embodiment of the present disclosure, the display device may be any splicing screen product or component with a display function, such as a large-size advertising splicing screen, a splicing electronic whiteboard, or the like.

[0090] In response to the current existing problems, the present disclosure develops a display panel and a display device, and by setting the light-emitting unit layer of the display panel to include a plurality of pixel unit groups arranged in an array, and the pixel unit group includes pixel units arranged in an array, and setting the spacing between adjacent pixel unit groups in a specified direction to be greater than the distance between pixel units in the pixel unit group in the corresponding direction, when the display panel is used for a spliced ​​screen, the splicing gaps between the display panels appear less obvious under the contrast of the pixel units, thereby enabling seamless splicing of OLED display panels, and having broad application prospects.

[0091] Obviously, the above embodiments of the present disclosure are merely examples for clearly illustrating the present disclosure, and are not intended to limit the implementation methods of the present disclosure. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is impossible to list all the implementation methods here. All obvious changes or modifications derived from the technical solutions of the present disclosure are still within the scope of protection of the present disclosure.

Claims

1. A display panel, characterized in that, Comprising: A substrate and a light-emitting unit layer located on the substrate, the light-emitting unit layer comprising: a plurality of pixel unit groups arranged in an array; Each pixel unit group comprises a plurality of pixel units arranged in an array, and each pixel unit comprises at least two sub-pixels; A first pitch between adjacent pixel units within the pixel unit group in a first direction is smaller than a second pitch between adjacent pixel unit groups in the first direction.

2. The display panel according to claim 1, wherein A first ratio of the second pitch to the first pitch belongs to (1, 1.5].

3. The display panel according to claim 2, wherein Half of the second spacing, a2, satisfies the relation: Wherein, pitch represents the pitch between different pixel units within the pixel unit group, AR represents the aperture ratio of the display panel, PDL gap represents the pitch between different sub-pixels within the pixel unit, and a2 represents half of the first pitch.

4. The display panel according to any one of claims 1 to 3, characterized in that, The display panel further comprises: a housing; The light-emitting unit layer comprises a first pixel unit closest to the housing in the first direction, and a distance from a side of the first pixel unit close to the housing to a side of the housing far from the first pixel unit in the first direction is a first distance, and half of the second pitch is a second distance, and the first distance is less than or equal to the second distance.

5. The display panel according to any one of claims 1 to 4, characterized in that, A third pitch between adjacent pixel units within the pixel unit group in a second direction is smaller than a fourth pitch between adjacent pixel unit groups in the second direction, and the first direction intersects with the second direction.

6. The display panel according to claim 5, wherein A second ratio of the fourth pitch to the third pitch belongs to (1, 1.5].

7. The display panel according to claim 6, wherein The first ratio is equal to the second ratio.

8. The display panel according to any one of claims 5 to 7, characterized in that, The fourth pitch is equal to the second pitch.

9. The display panel according to any one of claims 5 to 8, characterized in that, The third pitch is equal to the first pitch.

10. The display panel according to claim 1, characterized in that, Half of the fourth spacing, b2, satisfies the relation: Wherein, pitch represents the pitch between different pixel units within the pixel unit group, AR represents the aperture ratio of the display panel, PDL gap represents the pitch between different sub-pixels within the pixel unit, and b1 represents half of the third pitch.

11. The display panel according to any one of claims 5 to 10, characterized in that, The display panel further comprises: a housing; The light-emitting unit layer comprises a second pixel unit closest to the housing in the second direction, and a distance from a side of the second pixel unit close to the housing to a side of the housing far from the second pixel unit in the second direction is a third distance, and half of the fourth pitch is a fourth distance, and the third distance is less than or equal to the fourth distance.

12. The display panel according to any one of claims 5 to 11, characterized in that, The first direction is perpendicular to the second direction.

13. The display panel according to any one of claims 5 to 12, characterized in that, The first direction is the direction where the pixel columns are located among the plurality of pixel units arranged in an array, or the first direction is the direction where the pixel rows are located among the plurality of pixel units arranged in an array.

14. The display panel according to any one of claims 1 to 13, characterized in that The pixel unit comprises a first sub-pixel, a second sub-pixel and a third sub-pixel arranged in a row or a column, and the first sub-pixel, the second sub-pixel and the third sub-pixel have different colors.

15. The display panel according to any one of claims 1 to 13, characterized in that, The pixel unit comprises: a first sub-pixel, a second sub-pixel and a third sub-pixel, and the first sub-pixel, the second sub-pixel and the third sub-pixel have different colors; The first sub-pixel and the second sub-pixel are arranged in a first pixel column, the third sub-pixel is arranged in a second pixel column, the first pixel column and the second pixel column are alternately arranged along the extending direction of the pixel row, and there is an overlapping part between the orthographic projections of the first sub-pixel and the third sub-pixel along the extending direction of the pixel row, and there is an overlapping part between the orthographic projections of the second sub-pixel and the third sub-pixel along the extending direction of the pixel row.

16. The display panel according to any one of claims 1 to 15, characterized in that, The number of pixel rows in the pixel unit group is equal to the number of pixel columns.

17. The display panel according to claim 16, wherein The pixel unit group includes four pixel units, or the pixel unit group includes nine pixel units.

18. The display panel according to any one of claims 1 to 17, characterized in that, The multiple pixel units of the pixel unit group include a third pixel unit, a fourth pixel unit, a fifth pixel unit, and a sixth pixel unit. The third pixel unit and the fourth pixel unit include sub-pixels of a first color and sub-pixels of a second color. The fifth pixel unit and the sixth pixel unit include sub-pixels of the second color and sub-pixels of a third color. The first color, the second color, and the third color are different.

19. A display device, characterized in that, Comprising: A tiled display panel, the tiled display panel is obtained by tiling a plurality of display panels. The display panel includes: a substrate and a light-emitting unit layer located on the substrate. The light-emitting unit layer includes: a plurality of pixel unit groups arranged in an array; The pixel unit group includes a plurality of pixel units arranged in an array, and each pixel unit includes at least two sub-pixels; The first pitch between adjacent pixel units in the pixel unit group in a first direction is smaller than the second pitch between adjacent pixel unit groups in the first direction.

20. The display device according to claim 19, wherein The display panel includes a housing, and adjacent display panels among the plurality of display panels are tiled through their respective housings.

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