Display panel, tiled screen, and display device

Abstract

A display panel, a tiled screen, and a display device. The display panel comprises a display region (AA) and a frame region (NA). The display region (AA) comprises a first display region (AA1) adjacent to the frame region (NA), and a second display region (AA2) located on the side of the first display region (AA1) distant from the frame region (NA); and in a unit area, the light-transmitting area of the first display region (AA1) is greater than the light-transmitting area of the second display region (AA2).

Description

Display panel, splicing screen and display device Technical Field

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

[0002] With the development of electronic display products, consumers are demanding higher and higher screen-to-body ratios. However, current display panels are subject to technical limitations, and non-display border areas still form at the edges of the display panels, leaving room for improvement in visual quality. On the one hand, for a single, independent display, the presence of a border area reduces the screen-to-body ratio, limiting visual quality and, to a certain extent, impacting user experience. On the other hand, with the development of industries such as outdoor advertising and indoor education, large-screen displays have become a significant branch of the display industry.

[0003] Summary of the Invention

[0004] The present application provides a display panel, a spliced ​​screen and a display device.

[0005] According to a first aspect of an embodiment of the present application, a display panel is provided, comprising a display area and a frame area. The display area comprises a first display area adjacent to the frame area, and a second display area located on a side of the first display area away from the frame area. Within a unit area, the light-transmitting area of ​​the first display area is greater than the light-transmitting area of ​​the second display area.

[0006] In one embodiment, the display panel includes: a substrate, a pixel defining layer, a plurality of light-emitting units, and a color filter layer. The pixel defining layer is located on one side of the substrate, and the pixel defining layer includes a plurality of pixel openings and a plurality of pixel defining units. A plurality of light-emitting units are located within the plurality of pixel openings. The color filter layer is located on a side of the pixel defining layer away from the substrate, and the color filter layer includes a black matrix and a plurality of filter units, the black matrix is ​​arranged corresponding to the plurality of pixel defining units, and the plurality of filter units are arranged corresponding to the plurality of light-emitting units. The plurality of filter units are located in a filter area, and the filter area includes a first filter area located in the first display area and a second filter area located in the second display area, and the light-transmitting area of ​​the first filter area is larger than the light-transmitting area of ​​the second filter area.

[0007] In one embodiment, the display panel further comprises a filling layer, the filling layer being located on a side of the color filter layer away from the pixel defining layer, the filling layer being at least partially located in the first filter region, and the plurality of filter units being located in the second filter region.

[0008] In one embodiment, the plurality of filter units include a first filter unit located in the first filter area and a second filter unit located in the second filter area, wherein a size of the first filter unit in a direction perpendicular to the display panel is smaller than a size of the second filter unit in a direction perpendicular to the display panel.

[0009] In one embodiment, the multiple filter units include a first filter unit located in the first filter area and a second filter unit located in the second filter area, wherein the area of ​​the first filter unit close to the pixel defining layer is larger than the area of ​​the second filter unit close to the pixel defining layer.

[0010] In one embodiment, the black matrix includes a first black matrix located in the first display area and a second black matrix located in the second display area, wherein the area of ​​the first black matrix close to the pixel defining layer is smaller than the area of ​​the second black matrix close to the pixel defining layer.

[0011] In one embodiment, the display panel further comprises a driving circuit layer located in the display area, the driving circuit layer being located on a side of the substrate close to the pixel defining layer, and the driving circuit layer being electrically connected to the plurality of light-emitting units.

[0012] In one embodiment, the driving circuit layer includes a plurality of pixel driving circuits, wherein the plurality of pixel driving circuits are electrically connected to the plurality of light emitting units in a one-to-one correspondence.

[0013] In one embodiment, the driving circuit layer includes a plurality of pixel driving circuits, wherein the plurality of pixel driving circuits are electrically connected to the plurality of light emitting units in a one-to-many correspondence.

[0014] In one embodiment, the driving circuit layer includes a plurality of pixel driving circuits, wherein the plurality of pixel driving circuits are electrically connected to the plurality of light emitting units in a one-to-many correspondence.

[0015] In one embodiment, the border area includes: an edge luminescent material defining area and an edge luminescent material unit. The edge luminescent material defining area is located in the pixel defining layer and is formed with a plurality of defining areas and defining grooves. The edge luminescent material unit is located in the defining grooves.

[0016] In one embodiment, the distance between the border area and the adjacent light-emitting unit located in the first display area is equal to the distance between adjacent light-emitting units in the first display area.

[0017] In one embodiment, the light emitting unit includes a plurality of sub-light emitting units, and the sub-light emitting units in the first display area and the sub-light emitting units in the second display area are arranged in the same manner.

[0018] In one embodiment, the border region includes V-shaped grooves and isolation pillars, the V-shaped grooves and the isolation pillars are alternately arranged, and the depth of the V-shaped grooves is greater than the height of the isolation pillars.

[0019] In one embodiment, the border area includes a dam portion, wherein, on a side of the dam portion close to the display area, a distance from a V-shaped groove closest to the dam portion to the dam portion is smaller than a distance from an isolation column closest to the dam portion to the dam portion.

[0020] In one embodiment, the filling layer and the black matrix are both terminated at a side of the dam portion close to the display area and are in direct contact with the dam portion.

[0021] In one embodiment, in the border area, an orthographic projection of the black matrix on the substrate at least partially overlaps with an orthographic projection of the V-shaped groove and the isolation column on the substrate.

[0022] In one embodiment, the length of the black matrix in the border area is greater than the length of the black matrix in the first display area and the second display area.

[0023] According to a second aspect of the embodiments of the present application, a spliced ​​screen is further provided, comprising a plurality of display panels provided in the aforementioned embodiments, wherein the frame areas of the plurality of display panels are spliced ​​together.

[0024] According to a third aspect of the embodiments of the present application, a display device is provided, comprising the display panel or spliced ​​screen provided in the aforementioned embodiments.

[0025] Additional aspects and advantages of the present application will be given in part in the following description, which will become apparent from the following description, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0027] FIG1 is a schematic diagram showing the arrangement of light-emitting units of a spliced ​​screen in the related art.

[0028] FIG2 is a schematic diagram of the arrangement of light-emitting units of a display panel provided in an embodiment of the present application.

[0029] FIG. 3 is a cross-sectional view of a portion of a film layer of a display panel taken along dotted line AA′ in FIG. 2 according to an embodiment of the present application.

[0030] FIG. 4 is another cross-sectional view of a portion of the film layer of the display panel taken along the dotted line AA′ in FIG. 2 provided by an embodiment of the present application.

[0031] FIG. 5 is another cross-sectional view of a portion of the film layer of the display panel taken along the dotted line AA′ in FIG. 2 provided by an embodiment of the present application.

[0032] FIG. 6 is another cross-sectional view of a portion of the film layer of the display panel taken along the dotted line AA′ in FIG. 2 provided by an embodiment of the present application.

[0033] FIG7 is a schematic diagram of a film layer of a display panel provided in an embodiment of the present application.

[0034] In the figure: 100-light-emitting unit; 101-first sub-light-emitting unit; 102-second sub-light-emitting unit; 103-third sub-light-emitting unit; AA-display area; AA1-first display area; AA2-second display area; NA-frame area; 110-substrate; 111-first barrier layer; 112-second barrier layer; 200-driving circuit layer; 201-pixel driving circuit; 211-first source; 212-second source; 213-first drain; 214-second drain; 215-first gate; 216-active layer; 217-second gate; 221-first gate insulating layer; 222-second gate insulating layer; 230-interlayer dielectric layer; 240- Passivation layer; 251-first planarization layer; 252-second planarization layer; 310-first electrode; 320-pixel defining layer; 321-pixel opening; 322-pixel defining unit; 330-second electrode; 400-encapsulation layer; 500-color filter layer; 510-black matrix; 511-first black matrix; 512-second black matrix; 520-filtering unit; 521-first filtering unit; 522-second filtering unit; 600-dam; 700-filling layer; 1001-V-groove; 1002-isolation column. DETAILED DESCRIPTION

[0035] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

[0036] The terms used in this application are for the purpose of describing specific embodiments only and are not intended to limit this application. As used in this application and the appended claims, the singular forms "a," "an," "the," and "the" are intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

[0037] As the times change, consumers are increasingly demanding higher quality displays in electronic display products. However, single displays often struggle to achieve a 100% screen-to-body ratio. The borders and seams of spliced ​​displays create a visually fragmented image. Therefore, OLED (Organic Light-Emitting Diode) is poised to become a key development direction in this field.

[0038] A spliced ​​screen is composed of multiple independent displays. A seam D exists between the two spliced ​​screens (as shown in Figure 1). The presence of the seam causes the pixel pitch at the splicing location to differ from that in the central area. The pixel pitch at the seam is larger, resulting in a sense of fragmented display. The size of the seam directly affects the display quality. For example, the conventional narrow seam of LCDs (Liquid Crystal Displays) is larger, and the seam area cannot display content, resulting in a sense of fragmented display. Therefore, the seam size needs to be reduced. To reduce the seam size, auxiliary cathode technology can be used to distribute the VSS ground line in the middle of the AA area (active area), thereby reducing the impact of the VSS ground line on the bezel. However, with existing OLED technology, the package bezel cannot be eliminated, only reduced, so the seam is always present. However, the larger pixel structure of OLEDs, combined with the limitations of OLED's large aperture ratio design and refined mask, results in the bezel area at the splicing location being non-luminous and the gap being larger, thus failing to achieve the desired display quality improvement.

[0039] The display panel, spliced ​​screen and display device provided in this application are intended to solve the above technical problems in related technologies.

[0040] The display panel, spliced ​​screen and display device in the embodiments of the present application are described in detail below with reference to the accompanying drawings. In the absence of conflict, the features in the following embodiments can complement or be combined with each other.

[0041] An embodiment of the present application provides a display panel, as shown in FIG2 , comprising a display area AA and a border area NA at least partially surrounding the display area AA. The display area AA includes a first display area AA1 adjacent to the border area NA, and a second display area AA2 located on a side of the first display area AA1 away from the border area NA. Within a unit area, the light-transmitting area of ​​the first display area AA1 is greater than the light-transmitting area of ​​the second display area AA2.

[0042] In this embodiment, within a unit area of ​​the display panel, the light-transmitting area of ​​the first display area AA1 is greater than the light-transmitting area of ​​the second display area AA2. For example, the first display area AA1 and the border area NA adjacent to the first display area AA1 can be considered as a whole as the "edge area," and the border area NA can be considered the non-luminous area within the "edge area." As shown in Figure 2, when the light-emitting unit array is arranged on the display panel, the light-emitting area of ​​the edge area (the first display area AA1 and the border area NA) within a unit area is smaller than the light-emitting area of ​​the second display area AA2 within a unit area. Therefore, the non-luminous area of ​​the edge area can be used to form the border area NA. For example: as shown in Figure 2, taking the unit area of ​​3*4 light-emitting units 100 as an example (3 light-emitting units 100 in the horizontal direction and 4 light-emitting units 100 in the vertical direction), the edge area (the first display area AA1 and the border area NA) is within the area with a unit area of ​​3*4 light-emitting units 100, that is, the edge area is within the area including SAA1 (2 light-emitting units 100 in the horizontal direction, 4 light-emitting units 100 in the vertical direction, and 2*4 light-emitting units 100 can be used for the light-emitting area) and SNA (1 light-emitting unit 100 in the horizontal direction, 4 light-emitting units 100 in the vertical direction, and 1*4 light-emitting unit is not used for the light-emitting area), and its light-emitting area is 2*4 light-emitting units 100; the second display area AA2 is within the area with a unit area of ​​3*4 light-emitting units 100, and the light-emitting area includes SAA2, which has 3*4 light-emitting units 100 (3 light-emitting units 100 in the horizontal direction, 4 light-emitting units 100 in the vertical direction, and 3*4 light-emitting units 100 can be used for the light-emitting area).

[0043] For example, the light-emitting area may refer to the orthographic projection area of ​​the light-emitting unit 100 or sub-light-emitting unit on the substrate, and the light-transmitting area may refer to the orthographic projection area of ​​the light-emitting unit 100 or sub-light-emitting unit's light-emitting control portion on the substrate, such as the orthographic projection area of ​​the light-emitting unit 100 or sub-light-emitting unit's filter region on the substrate. The unit area may refer to multiple light-emitting units 100 or sub-light-emitting units, or a single light-emitting unit 100 or sub-light-emitting unit.

[0044] By sacrificing the light-emitting area of ​​the light-emitting units adjacent to the frame in the related art to form the frame area NA, this application can achieve an increase in the screen-to-body ratio of an independent display or improve the sense of fragmentation of the display caused by the seam area of ​​a spliced ​​screen. However, at the same time, when the light-emitting area of ​​the edge area per unit area is smaller than the light-emitting area of ​​the second display area AA2, the lifespan of the light-emitting units in the edge area per unit area will differ from that of the light-emitting units in the second display area AA2, resulting in uneven lifespans of the light-emitting units in different areas of the display screen, which will affect the screen display and user experience. Therefore, by increasing the light-transmitting area of ​​the first display area AA1, making the light-transmitting area of ​​the first display area AA1 larger than the light-transmitting area of ​​the second display area AA2, and at the same time adjusting the luminous intensity of the light-emitting unit of the first display area AA1 to be less than the luminous intensity of the second display area AA2 in the working state, it is possible to extend the luminous life of the light-emitting unit of the first display area AA1 while ensuring the consistency of the display brightness of the light-emitting unit, so that the life of the light-emitting unit in the edge area per unit area is the same as the life of the light-emitting unit in the second display area AA2, thereby ensuring the display quality of the display panel, and visually weakening the influence of the border area NA on the display effect of the display panel, thereby increasing the screen-to-body ratio in terms of visual effect, weakening the sense of fragmentation in the display picture of the spliced ​​screen, and improving the user experience.

[0045] In some embodiments, the size of the light-emitting unit 100 can be further reduced, increasing the number of light-emitting units 100 per unit area to further improve the pixel density of the display panel, reduce the presence of the border area NA and the seam, thereby optimizing the display effect and enhancing the user experience. For example, as shown in Figures 1 and 2, the display panel is further divided, and the area of ​​the display panel originally having four light-emitting units 100 is divided into 12 light-emitting units 100.

[0046] In some embodiments, as shown in Figures 1 and 2, the display panel includes a plurality of light-emitting units 100, each light-emitting unit 100 includes a plurality of sub-light-emitting units. For example, each light-emitting unit 100 includes a first sub-light-emitting unit 101, a second sub-light-emitting unit 102, and a third sub-light-emitting unit 103, wherein the first sub-light-emitting unit 101, the second sub-light-emitting unit 102, and the third sub-light-emitting unit 103 emit light of different colors. For example, the sub-light-emitting units in this embodiment are arranged in a Real RGB arrangement. The light-emitting color of the first sub-light-emitting unit 101 is red, the light-emitting color of the second sub-light-emitting unit 102 is green, and the light-emitting color of the third sub-light-emitting unit 103 is blue. The light-emitting area of ​​the blue sub-pixel is larger than the light-emitting area of ​​the red / green sub-pixel. By increasing the light-emitting area of ​​the blue sub-pixel, the light-emitting life of the blue sub-pixel is increased, thereby improving the uniformity of the display effect of the display panel.

[0047] It should be noted that the arrangement of the sub-light emitting units also includes, but is not limited to, a Real RGB arrangement, a pentile arrangement, a diamond arrangement, or a Delta arrangement.

[0048] In some embodiments, as shown in Figures 3-5, a display panel includes a substrate 110, a pixel-defining layer 320, a plurality of light-emitting units 100, and a color filter layer 500. The pixel-defining layer 320 is located on one side of the substrate 110 and includes a plurality of pixel openings 321 and a plurality of pixel-defining units 322. The plurality of light-emitting units 100 are located within the plurality of pixel openings 321. The color filter layer 500 is located on the side of the pixel-defining layer 320 away from the substrate 110 and includes a black matrix 510 and a plurality of filter units 520. The black matrix 510 is disposed corresponding to the plurality of pixel-defining units 322, and the filter units 520 are disposed corresponding to the light-emitting units 100. The filter units 520 are located in a filter region, which includes a first filter region located in the first display area AA1 and a second filter region located in the second display area AA2. The light-transmitting area of ​​the first filter region is larger than the light-transmitting area of ​​the second filter region.

[0049] In this embodiment, the light-transmitting area of ​​the first filter region of the color filter layer 500 is greater than the light-transmitting area of ​​the second filter region. That is, the light transmittance of the first filter region of the color filter layer 500 is greater than that of the second filter region. (Light transmittance can refer to the percentage of luminous flux to incident luminous flux. For example, it can be the percentage of luminous flux passing through the filter region in the light-emitting unit 100 to the incident luminous flux. In some embodiments, for example, when the medium through which light passes is the same, light transmittance can be expressed as light transmittance = light-transmitting area / light-emitting area.) This allows the light-emitting area corresponding to the first filter region to transmit more light than the light-emitting area corresponding to the second filter region. Consequently, the luminous intensity of the light-emitting units 100 in the first display area AA1 can be weaker than that in the second display area AA2. Furthermore, the luminous lifetime of the light-emitting units 100 in the first display area AA1 can be extended, achieving uniform luminous lifetime across the light-emitting units 100 of the display panel, improving the display quality of the display panel, and enhancing the user experience.

[0050] It should be noted that this embodiment can adopt polarizer-less technology (color filter on encapsulation, COE), that is, after the AMOLED (Active-matrix organic light-emitting diode) is encapsulated, a color filter (CF) is coated on the side of the encapsulation layer 400 away from the substrate 110. Each pixel corresponds to a color filter of the pixel color, and the gaps between the color filters are separated by a black matrix 510 (BM). The color filter in the COE technology can solve the problems of reflection and light transmission. Of the external incident light, the unnecessary part is absorbed by the black matrix 510, and the required part is reflected by the color filter area. The color filter has a high transmittance for the main wavelengths of RGB, about 70% to 90%, which is much higher than that of the polarizer.

[0051] In some embodiments, each light-emitting unit 100 includes a red sub-light-emitting unit, a blue sub-light-emitting unit, and a green sub-light-emitting unit. The color filter layer 500 also includes a red filter region, a blue filter region, and a green filter region corresponding to each light-emitting unit 100 .

[0052] It should be noted that the substrate 110 may be a rigid substrate or a flexible substrate, and the substrate 110 includes an insulating material such as glass, quartz, and polymer resin. Furthermore, the substrate 110 includes CPI (transparent polyimide), PET (polyethylene terephthalate), or UTG (ultra-thin glass).

[0053] In some embodiments, as shown in FIG7 , a first electrode 310 is provided on a side of the pixel defining layer 320 close to the substrate 110, and a second electrode 330 is provided on a side of the pixel defining layer 320 away from the substrate 110. For example, the first electrode 310 is an anode, which may include ITO or IZO, and the second electrode 330 is a cathode, which may include Mg / Ag.

[0054] In some embodiments, as shown in Figures 3 to 5, an encapsulation layer 400 is provided on one side of the color filter layer 500 close to the pixel defining layer 320. The encapsulation layer 400 includes at least one inorganic film layer for preventing oxygen and water from penetrating into the light-emitting unit 100 in the pixel defining layer 320.

[0055] In some embodiments, as shown in FIG3 , the display panel further includes a filling layer 700, which is located on a side of the color filter layer 500 away from the pixel defining layer 320, and the filling layer 700 is located in the first filter area. The filter unit 520 is located in the second filter area. The first display area AA1 in this embodiment adopts a color filter skip design, that is, the filter area of ​​the first display area AA1 is not provided with a color filter (that is, the filter unit 520), and the black matrix 510 is set as usual. After the color filter is plated, a filling layer 700 is directly set on the hollowed-out color filter area (that is, the filter area), and the light transmittance of the filling layer 700 can be made greater than the light transmittance of the filter unit 520. It can be achieved that the light emitting area corresponding to the first filter area can transmit more light than the light emitting area corresponding to the second filter area, so the light emitting intensity of the light emitting unit 100 in the first display area AA1 can be weaker than the light emitting intensity of the second display area AA2. Furthermore, the light emitting life of the light emitting unit 100 in the first display area AA1 can be extended, and the light emitting life uniformity of the light emitting unit 100 of the display panel can be achieved, thereby improving the display quality of the display panel and enhancing the user experience.

[0056] In some embodiments, as shown in Figure 3, the thickness of the filling layer 700 in the first display area AA1 is h2, which is greater than the thickness h3 of the filling layer 700 in the border area NA and greater than the thickness h1 of the filling layer 700 in the second display area AA2. This design helps balance the transmittance of light in the first display area AA1 and the second display area AA2.

[0057] In some embodiments, the filling layer 700 includes an organic insulating material. The organic insulating material may include an imide polymer, a commercial polymer (such as polymethyl methacrylate (PMMA) or polystyrene (PS)), a polymer derivative having a phenolic group, an acryl polymer, an aryl ether polymer, an amide polymer, a fluorine polymer, a paraxylene polymer, or a vinyl alcohol polymer.

[0058] In some embodiments, as shown in FIG4 , the plurality of filter units 520 include a first filter unit 521 located in a first filter region and a second filter unit 522 located in a second filter region. The size of the first filter unit 521 in a direction perpendicular to the display panel is smaller than the size of the second filter unit 522 in a direction perpendicular to the display panel.

[0059] In this embodiment, when the light transmittance per unit size (e.g., per unit area) of the first filter unit 521 is the same as the light transmittance per unit size of the second filter unit 522, the thickness of the first filter unit 521 is set to be smaller than the thickness of the second filter unit 522. This allows the light transmittance of the first filter unit 521 to be greater than the light transmittance of the second filter unit 522. Furthermore, by adjusting the driving current electrically connected to the corresponding light-emitting unit 100, the luminous intensity of the light-emitting unit 100 in the first display area AA1 can be reduced, thereby extending the luminous lifetime of the light-emitting unit 100 in the first display area AA1. This achieves uniform luminous lifetime of the light-emitting units 100 in the display panel, improves the display quality of the display panel, and enhances the user experience.

[0060] It should be noted that the light transmittance of the first filter unit 521 within a unit size may be the same as or different from the light transmittance of the second filter unit 522 within a unit size. When the light transmittance of the first filter unit 521 within a unit size is less than the light transmittance of the second filter unit 522 within a unit size, it is necessary to ensure that the thickness of the first filter unit 521 is much smaller than the thickness of the second filter unit 522.

[0061] Furthermore, the difference parameter between the thickness of the first filter unit 521 and the thickness of the second filter unit 522 is related to the ratio of the luminous area of ​​the first display area AA1 per unit area to the luminous area of ​​the second display area AA2 per unit area. Those skilled in the art can flexibly set this parameter based on actual circumstances. For example, the difference between the thickness of the first filter unit 521 and the thickness of the second filter unit 522 is p1, and the ratio of the luminous area of ​​the edge area (including the first display area AA1 and the frame area NA) per unit area to the luminous area of ​​the second display area AA2 per unit area is S1, where K = p1 / S1, and K = 0.95 to 1.05. This ensures a minimal difference in brightness between the first display area AA1 and the second display area AA2, ensuring a better display effect.

[0062] In some embodiments, as shown in Figure 5, the filtering unit 520 includes a first filtering unit 521 located in the first filtering area and a second filtering unit 522 located in the second filtering area, and the area of ​​the first filtering unit 521 on the side close to the pixel defining layer 320 is larger than the area of ​​the second filtering unit 522 on the side close to the pixel defining layer 320.

[0063] In this embodiment, the area of ​​the first filter unit 521 on the side close to the pixel defining layer 320 is larger, so that when external light is incident on the surface of the light-emitting unit 100, more light can be reflected, thereby improving the light transmittance of the first filter unit 521, and further flexibly adjusting the luminous intensity of the light-emitting unit 100 in the first display area AA1, extending its life, compensating for the defect of reduced luminous area caused by the border area NA (non-luminous area) in the edge area, improving the uniformity of the luminous life of the light-emitting unit 100 of the display panel, improving the display quality of the display panel, and enhancing the user experience.

[0064] It should be noted that when the area of ​​the first filter unit 521 near the pixel defining layer 320 increases, the area of ​​the corresponding adjacent black matrix 510 near the pixel defining layer 320 can increase, decrease, or remain unchanged. This can be flexibly selected according to actual circumstances in the art. When the area of ​​the black matrix 510 increases, it is necessary to ensure that the increased light transmittance of the filter unit 520 is greater than the increased light absorptivity of the black matrix 510.

[0065] In some embodiments, as shown in Figure 5, the black matrix 510 includes a first black matrix 511 located in the first display area AA1 and a second black matrix 512 located in the second display area AA2, and the area of ​​the first black matrix 511 on the side close to the pixel defining layer 320 is smaller than the area of ​​the second black matrix 512 on the side close to the pixel defining layer 320.

[0066] This embodiment reduces the area of ​​the black matrix 510 on the side close to the pixel defining layer 320, thereby reducing the light absorption rate of the black matrix 510, indirectly increasing the light transmittance of the first filter area, thereby achieving flexible adjustment of the luminous intensity of the light-emitting unit 100 in the first display area AA1, extending the luminous life, compensating for the problem of reduced luminous area in the edge area, improving the uniformity of the luminous life of the light-emitting unit 100 of the display panel, and optimizing the application of display panels and spliced ​​screens in the field of display technology.

[0067] 3 to 6 , the display area AA further includes a driving circuit layer 200 . The driving circuit layer 200 is located on a side of the substrate 110 close to the pixel defining layer 320 and is electrically connected to the light emitting unit 100 .

[0068] In some embodiments, the driving circuit layer 200 includes a plurality of pixel driving circuits 201 , and the pixel driving circuits 201 are electrically connected to the light emitting units 100 in a one-to-one correspondence.

[0069] For example, as shown in FIG2 , this embodiment sets the area where one pixel unit is located to include 12 small pixel units. The 12 small pixel units are driven by 12 pixel driving circuits respectively, and the same data signal is written into the 12 small pixel units.

[0070] In some embodiments, the driving circuit layer 200 includes a plurality of pixel driving circuits 201 , and the pixel driving circuits 201 are electrically connected to the light emitting units 100 in a one-to-many correspondence.

[0071] For example, in this embodiment, a region where one pixel unit is located is divided into 12 small pixel units, wherein the 12 small pixel units can be driven by the same pixel circuit to realize parallel connection.

[0072] In some embodiments, the driving circuit layer 200 includes a plurality of pixel driving circuits 201 , and the pixel driving circuits 201 are electrically connected to the light emitting units 100 in a one-to-many correspondence.

[0073] In some embodiments, as shown in FIG7 , the display panel further includes a first barrier layer 111 (barrier 1) and a second barrier layer 112 (barrier 2) sequentially stacked on the substrate 110. The driving circuit layer 200 includes a thin film transistor, which includes a first source electrode 211, a second source electrode 212, an active layer 216, a first drain electrode 213, a second drain electrode 214, and a first gate electrode 215 and a second gate electrode 217 located on a side of the active layer 216 away from the substrate 110. The driving circuit layer 200 further includes a first gate insulating layer 221, a second gate insulating layer 222, an interlayer dielectric layer 230 (ILD), a passivation layer 240 (PVX), a first planarization layer 251 (PLN1), and a second planarization layer 252 (PLN2), sequentially stacked on the substrate 110.

[0074] In some embodiments, as shown in FIG7 , the border area NA includes an edge luminescent material defining area and an edge luminescent material unit. The edge luminescent material defining area is located in the pixel defining layer 320 and has a plurality of defining areas and defining grooves. The edge luminescent material unit is located in the defining grooves.

[0075] In the aforementioned embodiment, the method of sacrificing the space of the edge pixels to form the border area NA and reducing the pixel size to improve the display effect will have a certain impact on the manufacturing process. Since the mask in the related art usually adopts a mold of a fixed shape to form a plurality of pixel units arranged in an array, in order to save the production cost of the mask, simplify the model of the mask, and simplify the manufacturing process, this embodiment still retains the process of forming the "pixel defining layer 320" (edge ​​luminous material defining area) in the border area NA, but the other film layers of the border area NA are still consistent with the border area NA in the related art. The edge luminous material unit in the edge luminous material defining area of ​​the border area NA is not additionally connected to the driving circuit to ensure that the border area NA has enough space to form the relevant packaging structure. The limiting groove in this embodiment can prevent the luminous materials inside and outside the packaging frame from being connected together to achieve the effect of isolating the package water vapor. Exemplarily, the limiting area is provided with a plurality of isolation columns 1002 for isolating the luminous material.

[0076] In some embodiments, as shown in Figure 7, the border area NA where the second planarization layer 252 is located is further provided with a plurality of V-shaped grooves 1001 to prevent the second planarization layers 252 from being connected to each other to avoid water vapor erosion. At the same time, the border area NA in this embodiment is provided with a dam portion 600 to prevent the organic material in the planarization layer from flowing or leaking to the outside. Compared with the related art that usually adopts two dam portions (DAM) to effectively prevent the organic material from being exposed to or leaking to the outside of the display device, this embodiment can achieve preliminary blocking of the flow of organic materials by providing a V-shaped groove 1001, and can also reduce the height of the organic material film layer. Further combined with a dam portion 600, it is possible to effectively block the organic material from being exposed to or leaking to the outside of the display device, thereby simplifying the manufacturing process and saving packaging costs. It should be noted that the dam portion 600 can be formed by an organic film such as acrylic resin, epoxy resin, phenolic resin, polyamide resin and polyimide resin.

[0077] In some embodiments, as shown in FIG. 7 , in the border area NA, V-grooves 1001 and isolation columns 1002 are alternately arranged, and the depth of the V-grooves 1001 is higher than the height of the isolation columns 1002 , so as to prevent the organic material in the second planarization layer 252 from flowing or leaking.

[0078] In some embodiments, as shown in FIG7 , V-shaped grooves 1001 and isolation pillars 1002 may be formed on both sides of the dam portion 600 in the border area NA. On the side of the dam portion 600 that is closest to the display area AA, the distance between the first V-shaped groove 1001 closest to the dam portion 600 and the dam portion 600 is smaller than the distance between the first isolation pillar 1002 closest to the dam portion 600 and the dam portion 600. For example, the distance between the centerline of the first V-shaped groove 1001 and the centerline of the dam portion 600 is smaller than the distance between the centerline of the first isolation pillar 1002 and the centerline of the dam portion 600. This facilitates preventing organic material from flowing or leaking into the display area AA through the V-shaped groove 1001.

[0079] In some embodiments, as shown in Figure 7, in the border area NA, the light-emitting material of the light-emitting unit 100 and the second electrode 330 can also be filled into the V-shaped groove 1001, or the light-emitting material of the light-emitting unit 100 and the second electrode 330 can also be filled into the gap between the V-shaped groove 1001 and the isolation column 1002.

[0080] In some embodiments, as shown in FIG7 , in the border area NA, the orthographic projections of the filling layer 700, black matrix 510, and encapsulation layer 400 on the substrate 110 may at least partially overlap with the orthographic projections of the V-grooves 1001 and spacers 1002 on the substrate 110, facilitating planarization of the border area NA. The filling layer 700 and black matrix 510 both terminate at the side of the dam 600 near the display area AA1 and directly contact the dam 600, facilitating a tight encapsulation structure.

[0081] In some embodiments, as shown in FIG7 , the length of the black matrix 510 in the border area NA is greater than the length of the black matrix in the first display area AA1 and the second display area AA2. For example, the length of the black matrix 510 in the border area NA is 3 to 5 times the length of the black matrix in the first display area AA1 and the second display area AA2, which is beneficial for blocking light in the border area NA and for flattening the border area NA. In some embodiments, the spacing between the border area NA and the adjacent light-emitting units 100 located in the first display area AA1 is equal to the spacing between adjacent light-emitting units 100 in the first display area AA1. In some embodiments, the center-to-center spacing between the border area NA and the adjacent light-emitting units 100 located in the first display area AA1 is equal to the center-to-center spacing between adjacent light-emitting units 100 in the first display area AA1.

[0082] In combination with the above-mentioned embodiment, when the border area NA is provided with an edge luminous material unit, it is equivalent to the existence of "pixels" in the edge area. Then, when the original large-size pixels are divided into small-size pixels, the center distance between the border area NA and the adjacent light-emitting units 100 is equal to the center distance between the adjacent light-emitting units 100 in the first display area AA1. When multiple display panels form a spliced ​​screen, it can be regarded as using the pixel area of ​​the edge area to form the border area NA, which can be further regarded as realizing an equal pitch design between the pixels of the multiple display panels, thereby improving the display fragmentation caused by the low screen-to-body ratio between the spliced ​​screens in the related art.

[0083] In some embodiments, the light emitting unit 100 includes a plurality of sub-light emitting units, and the sub-light emitting units of the first display area AA1 and the sub-light emitting units of the second display area AA2 are arranged in the same manner, so that pixels can be arranged regularly to fully utilize space.

[0084] Based on the same inventive concept, embodiments of the present application provide a spliced ​​screen. This includes multiple display panels as provided in the aforementioned embodiments, with the border areas NA of the multiple display panels spliced ​​together. Thus, this spliced ​​screen possesses all the features and advantages of the aforementioned display panels, and will not be further elaborated here.

[0085] Based on the same inventive concept, an embodiment of the present application provides a display device, including a display panel or spliced ​​screen as provided in the aforementioned embodiment. Thus, the spliced ​​screen has all the features and advantages of the aforementioned display panel or spliced ​​screen, which will not be repeated here.

[0086] It should be noted that the display device can be any device that displays either moving (e.g., video) or stationary (e.g., still images), and whether text or images. More specifically, it is contemplated that embodiments may be implemented in or associated with a variety of electronic devices, such as (but not limited to) mobile phones, wireless devices, personal data assistants (PDAs), handheld or portable computers, GPS receivers / navigators, cameras, MP4 video players, camcorders, game consoles, watches, clocks, calculators, television monitors, flat-panel displays, computer monitors, automotive displays (e.g., speedometer displays, etc.), navigation systems, cockpit controls and / or displays, displays of camera views (e.g., displays of rearview cameras in vehicles), electronic photographs, electronic billboards or signs, projectors, architectural structures, packaging, and aesthetic structures (e.g., displays of images of a piece of jewelry), etc.

[0087] The above embodiments of the present application can complement each other if no conflict occurs.

[0088] It should be noted that in the accompanying drawings, the sizes of layers and regions may be exaggerated for clarity of illustration. It will also be 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 will be 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 will also be understood that when a layer or element is referred to as being "between" two layers or elements, it may be the only layer between the two layers or elements, or there may also be more than one intermediate layer or element. Similar reference numerals throughout the text indicate similar elements.

[0089] The terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as a limitation on this application.

[0090] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. Throughout this application, unless otherwise specified, "plurality" means two or more.

[0091] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present application that follow the general principles of the present application and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered merely as exemplary, and the true scope and spirit of the present application are indicated by the claims.

[0092] It should be understood that the present application is not limited to the exact structures described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A display panel, comprising a display area and a frame area, characterized in that: The display area includes a first display area adjacent to the frame area, and a second display area located on a side of the first display area away from the frame area; Within a unit area, a light-transmitting area of ​​the first display region is larger than a light-transmitting area of ​​the second display region.

2. The display panel according to claim 1, characterized in that: The display panel comprises: substrate; A pixel defining layer, located on one side of the substrate, the pixel defining layer comprising a plurality of pixel openings and a plurality of pixel defining units; A plurality of light emitting units are located in the plurality of pixel openings; A color filter layer is located on a side of the pixel defining layer away from the substrate, and the color filter layer includes: a black matrix, the black matrix being arranged corresponding to the plurality of pixel defining units, and A plurality of filter units are provided corresponding to the plurality of light-emitting units; the plurality of filter units are located in a filter area, the filter area includes a first filter area located in the first display area and a second filter area located in the second display area, and a light-transmitting area of ​​the first filter area is greater than a light-transmitting area of ​​the second filter area.

3. The display panel according to claim 2, characterized in that: The display panel further includes: The filling layer is located on a side of the color filter layer away from the pixel defining layer, and at least a part of the filling layer is located in the first filter area; the plurality of filter units are located in the second filter area.

4. The display panel according to claim 2, characterized in that: The plurality of filter units include a first filter unit located in the first filter area and a second filter unit located in the second filter area, wherein a size of the first filter unit in a direction perpendicular to the display panel is smaller than a size of the second filter unit in a direction perpendicular to the display panel.

5. The display panel according to claim 2, characterized in that: The multiple filter units include a first filter unit located in the first filter area and a second filter unit located in the second filter area, wherein an area of ​​the first filter unit close to the pixel defining layer is larger than an area of ​​the second filter unit close to the pixel defining layer.

6. The display panel according to claim 2, characterized in that: The black matrix includes a first black matrix located in the first display area and a second black matrix located in the second display area, wherein an area of ​​the first black matrix close to the pixel defining layer is smaller than an area of ​​the second black matrix close to the pixel defining layer.

7. The display panel according to claim 2, characterized in that: The display panel further includes: A driving circuit layer located in the display area, wherein the driving circuit layer is located on the substrate near the image On one side of the element defining layer, the driving circuit layer is electrically connected to the plurality of light-emitting units.

8. The display panel according to claim 7, characterized in that: The driving circuit layer includes a plurality of pixel driving circuits, wherein the plurality of pixel driving circuits are electrically connected to the plurality of light emitting units in a one-to-one correspondence.

9. The display panel according to claim 7, characterized in that: The driving circuit layer includes a plurality of pixel driving circuits, wherein the plurality of pixel driving circuits are electrically connected to the plurality of light emitting units in a one-to-many correspondence.

10. The display panel according to claim 7, characterized in that: The driving circuit layer includes a plurality of pixel driving circuits, wherein the plurality of pixel driving circuits are electrically connected to the plurality of light emitting units in a one-to-many correspondence.

11. The display panel according to claim 2, characterized in that: The border area includes: The edge light emitting material defining area is located in the pixel defining layer and is formed with a plurality of defining areas and defining grooves; The edge luminescent material unit is located in the defined groove.

12. The display panel according to claim 2, characterized in that: The distance between the frame area and the adjacent light-emitting unit located in the first display area is equal to the distance between adjacent light-emitting units in the first display area.

13. The display panel according to claim 2, characterized in that: The light-emitting unit includes a plurality of sub-light-emitting units, and the sub-light-emitting units in the first display area and the sub-light-emitting units in the second display area are arranged in the same manner.

14. The display panel according to claim 2, characterized in that: The frame area includes V-shaped grooves and isolation columns, the V-shaped grooves and the isolation columns are arranged alternately, and the depth of the V-shaped grooves is greater than the height of the isolation columns.

15. The display panel according to claim 14, characterized in that: The frame area includes a dam portion, wherein, on a side of the dam portion close to the display area, a distance from a V-shaped groove closest to the dam portion to the dam portion is smaller than a distance from an isolation column closest to the dam portion to the dam portion.

16. The display panel according to claim 15, characterized in that: The filling layer and the black matrix are both terminated at a side of the dam portion close to the display area and are in direct contact with the dam portion.

17. The display panel according to claim 15, characterized in that: In the border area, an orthographic projection of the black matrix on the substrate at least partially overlaps with an orthographic projection of the V-shaped groove and the isolation column on the substrate.

18. The display panel according to claim 2, characterized in that: The length of the black matrix in the border area is greater than the length of the black matrix in the first display area and the second display area.

19. A spliced ​​screen, characterized in that: It comprises a plurality of display panels as claimed in any one of claims 1 to 18, wherein the frame areas of the plurality of display panels are spliced ​​with each other.

20. A display device, characterized in that: It comprises the display panel as claimed in any one of claims 1 to 18, or the spliced ​​screen as claimed in claim 19.

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