A display panel and display device

Abstract

Embodiments of the present application disclose a display panel and a display device, the display panel comprising first pixel units and second pixel units arranged alternately side by side along a first direction; each of the first pixel units and the second pixel units comprises first light emitting units, second light emitting units and third light emitting units; along the first direction, the first light emitting units and the second light emitting units in the first pixel units are arranged side by side and center-aligned with the third light emitting units in the second pixel units; in the first pixel units, the center lines of the first light emitting units, the second light emitting units and the third light emitting units form a first acute angle triangle; in the second pixel units, the center lines of the first light emitting units, the second light emitting units and the third light emitting units form a second acute angle triangle; the first acute angle triangle and the second acute angle triangle are shape-inverted in a second direction; the first direction and the second direction intersect. The technical solution of the embodiments of the present application can improve the pixel aperture ratio.

Description

Technical Field

[0001] This invention relates to the field of display technology, and more particularly to a display panel and a display device. Background Technology

[0002] In existing wearable or medium-sized display devices, the R, G, and B sub-pixels mostly adopt a real pixel arrangement, such as a π arrangement. However, this arrangement suffers from problems such as pixel aperture ratio loss or low space utilization, resulting in a low pixel aperture ratio. Therefore, how to improve the pixel aperture ratio through pixel arrangement optimization while maintaining the real arrangement has become an urgent problem to be solved. Summary of the Invention

[0003] This invention provides a display panel and a display device to improve the pixel aperture ratio through pixel arrangement optimization.

[0004] According to one aspect of the present invention, a display panel is provided, comprising: a plurality of pixel units, wherein each pixel unit includes at least two light-emitting units; Multiple pixel units include first pixel units and second pixel units arranged alternately side by side along a first direction; each of the first pixel unit and the second pixel unit includes a first light-emitting unit, a second light-emitting unit, and a third light-emitting unit; the light-emitting areas of the first light-emitting unit, the second light-emitting unit, and the third light-emitting unit are all curved; along the first direction, the first light-emitting unit and the second light-emitting unit in the first pixel unit are arranged side by side with the third light-emitting unit in the second pixel unit and are center-aligned. In the first pixel unit, the center line connecting the first light-emitting unit, the second light-emitting unit, and the third light-emitting unit forms a first acute triangle; in the second pixel unit, the center line connecting the first light-emitting unit, the second light-emitting unit, and the third light-emitting unit forms a second acute triangle; the first acute triangle and the second acute triangle are inverted in shape in the second direction; the first direction and the second direction intersect.

[0005] According to another aspect of the present invention, a display device is provided, comprising a display panel provided in any embodiment of the present invention.

[0006] The technical solution of this invention divides multiple pixel units in the display panel into a first pixel unit and a second pixel unit. The center lines connecting the three-color light-emitting units in the first pixel unit form a first acute triangle, and the center lines connecting the three-color light-emitting units in the second pixel unit form a second acute triangle. The first and second acute triangles are inverted in a second direction. The first and second pixel units are arranged alternately along a first direction. This ensures that, on the one hand, the light-emitting colors of any two adjacent light-emitting units are different in both the first and second directions, thus avoiding space waste caused by increasing the mask aperture spacing due to adjacent placement of light-emitting units of the same color, improving space utilization and pixel aperture ratio. On the other hand, it helps to prevent the arrangement space of any light-emitting unit from overlapping with the arrangement space of the anode via, ensuring that the arrangement space of the pixel aperture and the arrangement space of the anode via do not affect each other, thereby avoiding the loss of aperture area caused by avoiding the anode via and improving the pixel aperture ratio.

[0007] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0008] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0009] Figure 1 This is a schematic diagram of the structure of an existing display panel; Figure 2 This is a schematic diagram of the structure of a display panel provided in an embodiment of the present invention; Figure 3 It is along Figure 2 A cross-sectional view of a display panel, taken from the image below. Figure 4 This is a schematic diagram of another display panel structure provided in an embodiment of the present invention; Figure 5 It is along Figure 4 A cross-sectional view of the display panel taken from the middle section EE'. Figure 6 This is a schematic diagram of another display panel structure provided in an embodiment of the present invention; Figure 7 This is a schematic diagram of another display panel structure provided in an embodiment of the present invention; Figure 8 This is a schematic diagram of another display panel structure provided in an embodiment of the present invention; Figure 9 This is a schematic diagram of another display panel structure provided in an embodiment of the present invention; Figure 10 This is a schematic diagram of the structure of a display device provided in an embodiment of the present invention. Detailed Implementation

[0010] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0011] Various modifications and variations can be made to this application without departing from its spirit or scope, which will be apparent to those skilled in the art. Therefore, this application is intended to cover modifications and variations falling within the scope of the corresponding claims (the claimed technical solutions) and their equivalents. It should be noted that the implementation methods provided in the embodiments of this application can be combined with each other without contradiction.

[0012] First, it should be noted that, unless otherwise defined, the technical or scientific terms used in this invention should have the ordinary meaning understood by one of ordinary skill in the art. The terms "first," "second," and similar terms used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. The terms "comprising" and similar terms mean that the element or object preceding the word covers the element or object listed after the word and its equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly. Furthermore, the shapes and sizes of the components in the accompanying drawings do not reflect actual proportions and are only intended to illustrate the content of this invention.

[0013] For example, Figure 1 This is a schematic diagram of the structure of an existing display panel, such as... Figure 1 As shown, in the existing π arrangement, each pixel unit ( Figure 1The diagram shows four pixel units, each comprising subpixels of red, green, and blue colors. In the display panel, red subpixels (R) and green subpixels (G) are alternately arranged along the column direction, while blue subpixels (B) and red subpixels (R) (and green subpixels (G)) are alternately arranged along the row direction. Blue subpixels (B) in different pixel units are arranged adjacent to each other along the column direction. The reasons for this arrangement resulting in a low pixel aperture ratio are mainly as follows.

[0014] First, refer to Figure 1 The display panel includes a pixel definition layer (PDL). The PDL has multiple pixel openings (O1) corresponding to the R, G, and B sub-pixels. These openings expose the anode (RE) of the light-emitting elements within the sub-pixels. The pixel openings (O1) form a space for accommodating the light-emitting material, defining the shape, size, and arrangement of the light-emitting areas for each color's light-emitting elements. The light-emitting material is typically formed using a vapor deposition process. Specifically, different colors of light-emitting material are sequentially vapor-deposited into the corresponding pixel openings using masks with different openings. For example... Figure 1 This shows the layout set of mask openings 02 on three masks corresponding to the R, G, and B sub-pixels (the mask openings 02 corresponding to sub-pixels of different colors are actually located on different masks), see reference. Figure 1 The mask opening 02 corresponds one-to-one with the pixel opening 01. By using different masks in sequence, luminescent materials of different colors can be deposited into the corresponding pixel opening 01. For the existing π arrangement, since the blue sub-pixels (B) in different pixel units are arranged adjacently along the column direction, there needs to be a sufficiently large distance between the mask openings 02 corresponding to at least some of the adjacent blue sub-pixels (B) (e.g., Figure 1 A minimum spacing (D) is required to ensure the strength of the mask corresponding to the blue sub-pixel in the vapor deposition process. However, this results in wasted space, reduced space utilization, and ultimately a decrease in the overall pixel aperture ratio.

[0015] Secondly, refer to Figure 1 The display panel includes multiple anode connection nodes N (corresponding to the via positions where the anode RE is electrically connected to the pixel circuit below (referred to as anode vias)). The anode connection nodes N corresponding to the R, G, and B sub-pixels are arranged along the row direction. (Refer to...) Figure 1 To ensure that the luminescent material is deposited on a relatively flat surface, the pixel opening 01 corresponding to any sub-pixel (R / G / B) usually needs to avoid the location of the anode connection node N. For the existing π arrangement, the blue sub-pixel (B) is a long strip design, which overlaps with the layout space of the anode connection node N. To avoid the anode connection node N, the pixel opening 01 corresponding to the blue sub-pixel needs to be designed as an irregular opening (a notch is designed at the location of the anode connection node N). This will cause a loss of the opening area of ​​the blue sub-pixel and affect the pixel aperture ratio.

[0016] To address the aforementioned problems, embodiments of the present invention provide a display panel and a display device. The display panel includes multiple pixel units, each pixel unit including at least two light-emitting units; the multiple pixel units include first pixel units and second pixel units alternately arranged side-by-side along a first direction; the light-emitting units in both the first and second pixel units include a first light-emitting unit, a second light-emitting unit, and a third light-emitting unit; the light-emitting areas of the first, second, and third light-emitting units are all curved; along the first direction, the first and second light-emitting units in the first pixel unit are arranged side-by-side with the third light-emitting unit in the second pixel unit and their centers are aligned; in the first pixel unit, the center line connecting the first, second, and third light-emitting units forms a first acute-angled triangle; in the second pixel unit, the center line connecting the first, second, and third light-emitting units forms a second acute-angled triangle; the first and second acute-angled triangles are inverted in shape along a second direction; the first and second directions intersect.

[0017] By adopting the above technical solution, on the one hand, the emission colors of any two adjacent light-emitting units are different in both the first and second directions, thereby avoiding the space waste caused by increasing the mask aperture spacing due to the adjacent placement of light-emitting units of the same color, improving space utilization and increasing pixel aperture ratio; on the other hand, it helps to avoid the overlap between the placement space of any light-emitting unit and the placement space of the anode via, ensuring that the placement space of the pixel aperture and the placement space of the anode via do not affect each other, thereby avoiding the loss of aperture area caused by avoiding the anode via and improving pixel aperture ratio.

[0018] The above is the core idea of ​​this application. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings.

[0019] For example, Figure 2 This is a schematic diagram of the structure of a display panel provided in an embodiment of the present invention, such as... Figure 2As shown, the display panel 100 provided in this embodiment of the invention includes a plurality of pixel units 10, each pixel unit 10 including at least two light-emitting units 20; the plurality of pixel units 10 includes a first pixel unit 11 and a second pixel unit 12 arranged alternately side by side along a first direction X; the light-emitting units 20 in the first pixel unit 11 and the second pixel unit 12 each include a first light-emitting unit 21, a second light-emitting unit 22 and a third light-emitting unit 23; along the first direction X, the first light-emitting unit 21 and the second light-emitting unit 22 in the first pixel unit 11 and the third light-emitting unit 23 in the second pixel unit 12 are arranged side by side and aligned at the center; in the first pixel unit 11, the center line connecting the first light-emitting unit 21, the second light-emitting unit 22 and the third light-emitting unit 23 forms a first acute-angled triangle T1; in the second pixel unit 12, the center line connecting the first light-emitting unit 21, the second light-emitting unit 22 and the third light-emitting unit 23 forms a second acute-angled triangle T2; the first acute-angled triangle T1 and the second acute-angled triangle T2 are inverted in shape in the second direction Y; the first direction X and the second direction Y intersect.

[0020] Reference Figure 2 In this embodiment, the first light-emitting unit 21, the second light-emitting unit 22, and the third light-emitting unit 23 emit different colors ( Figure 2 Different colors are represented by different filling methods. In this embodiment, by adjusting the layout of the three-color light-emitting units, the first light-emitting unit 21 and the second light-emitting unit 22 in the first pixel unit 11 and the third light-emitting unit 23 in the second pixel unit 12 are arranged side by side along the first direction X and aligned at the center. The center line connecting the first light-emitting unit 21, the second light-emitting unit 22 and the third light-emitting unit 23 in the first pixel unit 11 forms a first acute triangle T1, and the center line connecting the first light-emitting unit 21, the second light-emitting unit 22 and the third light-emitting unit 23 in the second pixel unit 12 forms a second acute triangle T2. Furthermore, the shapes of the first acute triangle T1 and the second acute triangle T2 are inverted in the second direction Y, so that the light-emitting colors of any two adjacent light-emitting units are different in both the first direction X and the second direction Y. This avoids the space waste caused by the need to increase the mask opening spacing due to the adjacent arrangement of light-emitting units of the same color, and makes the mask openings corresponding to light-emitting units of different colors (such as...) Figure 2 The markings 021, 022, and 023 can be densely distributed on the display panel to improve space utilization and increase pixel aperture ratio. Figure 2 In the diagram, 021 indicates the opening on the mask used in the fabrication of the first light-emitting unit 21, 022 indicates the opening on the mask used in the fabrication of the second light-emitting unit 22, and 023 indicates the opening on the mask used in the fabrication of the third light-emitting unit 23. The specific fabrication process / principle is explained above and will not be repeated here.

[0021] Figure 3 It is along Figure 2 A cross-sectional structural diagram of a display panel, taken from the image above (BB's), combined with... Figure 2 and Figure 3 Optionally, the display panel 100 further includes a substrate 30, an array layer 40, a planarization layer 50, a pixel defining layer 60, and a first connection structure 70; the array layer 40 is located on one side of the substrate 30; the array layer 40 includes pixel circuitry 410; the planarization layer 50 is located on the side of the array layer 40 away from the substrate 30; the pixel defining layer 60 is located on the side of the planarization layer 50 away from the substrate 30; the pixel defining layer 60 includes a plurality of pixel openings 61; the light-emitting unit 20 includes a stacked anode structure 201 and a light-emitting layer 202, the anode structure 201 being located between the planarization layer 50 and the pixel defining layer 60. Between the pixel limiting layers 60, the pixel opening 61 exposes a portion of the surface of the anode structure 201, and at least a portion of the light-emitting layer 202 is located within the pixel opening 61; the first connection structure 70 is located between the planarization layer 50 and the pixel limiting layer 60; the display panel 100 is provided with a first via 101 that penetrates at least through the planarization layer 50, and along a direction perpendicular to the plane of the substrate 30, the first via 101 overlaps with the first connection structure 70 but does not overlap with the anode structure 201; the anode structure 201 is electrically connected to the pixel circuit 410 via the first connection structure 70 and the first via 101.

[0022] In this embodiment, the anode structure 201 is electrically connected to the pixel circuit 410 in the underlying film layer, and is referred to as the anode via. In this embodiment, the anode structure 201 is electrically connected to the first connection structure 70, and the first via 101 overlaps with the first connection structure 70, so that the anode structure 201 is electrically connected to the pixel circuit 410 through the first connection structure 70 and the first via 101.

[0023] Reference Figure 3 Optionally, the anode structure 201 and the first connecting structure 70 are disposed in the same layer and integrally formed, so that the anode structure 201 is electrically connected to the pixel circuit 410 through the first connecting structure 70 and the first via 101. At this time, the pixel opening 61 exposes part of the surface of the anode structure 201, but does not expose the first connecting structure 70. The first via 101 overlaps with the first connecting structure 70, but does not overlap with the anode structure 201, thereby ensuring that the first via 101 does not overlap with the pixel opening 61, and ensuring that the light-emitting material is deposited on a relatively flat surface.

[0024] In other embodiments, the first connection structure 70 and the anode structure 201 can also be arranged in different layers. For example, the first connection structure 70 is located between the film layer where the anode structure 201 is located and the film layer where the pixel circuit 410 is located, serving as a transition structure between the anode structure 201 and the pixel circuit 410, as long as the first via 101 and the pixel opening 61 do not overlap.

[0025] Reference Figure 2 The pixel arrangement method provided in this embodiment of the invention also helps to avoid the overlap between the arrangement space of any light-emitting unit 20 and the arrangement space of the first via 101, ensuring that the arrangement space of the pixel opening 61 and the arrangement space of the first via 101 do not affect each other, thereby avoiding the loss of opening area caused by avoiding the anode via and improving the pixel aperture ratio.

[0026] Specifically, refer to Figure 2 Along the first direction X, a plurality of first vias 101 are arranged side by side; the first light-emitting unit 21 includes a first anode 211, the second light-emitting unit 22 includes a second anode 221, and the third light-emitting unit 23 includes a third anode 231; in the pixel units 10 located in the same row in the first direction X, the first anode 211, the second anode 221 and the third anode 231 have a first gap region H in the second direction Y, and along the direction perpendicular to the plane where the substrate 30 is located, the first via 101 is located in the first gap region H.

[0027] Among them, the first anode 211 is the anode structure 201 of the first light-emitting unit 21, the second anode 221 is the anode structure 201 of the second light-emitting unit 22, and the third anode 231 is the anode structure 201 of the third light-emitting unit 23.

[0028] Reference Figure 3 Each color light-emitting unit 20 also includes a cathode 203, which is located on the side of the light-emitting layer 202 away from the anode structure 201. Optionally, the cathode 203 is disposed throughout the entire layer; in other words, each color light-emitting unit 20 can share a cathode. In some embodiments, the cathodes of different color light-emitting units 20 can also be disposed independently, and this embodiment of the present invention does not limit this.

[0029] In this embodiment, based on the above pixel arrangement, the first light-emitting unit 21 and the second light-emitting unit 22 in the first pixel unit 11 and the third light-emitting unit 23 in the second pixel unit 12 are arranged side by side along the first direction X and their centers are aligned. The center line connecting the first light-emitting unit 21, the second light-emitting unit 22 and the third light-emitting unit 23 in the first pixel unit 11 forms a first acute triangle T1, and the center line connecting the first light-emitting unit 21, the second light-emitting unit 22 and the third light-emitting unit 23 in the second pixel unit 12 forms a second acute triangle T2. Furthermore, the first acute triangle T1 and the second acute triangle T2... The triangular triangle T2 is inverted in the second direction Y, so that among the pixel units 10 located in the same row in the first direction X, the first anode 211, the second anode 221 and the third anode 231 have a first gap region H in the second direction Y. By setting the first via 101 in the first gap region H in the second direction Y between the first anode 211, the second anode 221 and the third anode 231, it can be ensured that the layout space of the pixel opening 61 and the layout space of the first via 101 do not affect each other, thereby avoiding the loss of opening area caused by avoiding the anode via and improving the pixel aperture ratio.

[0030] Understandably, one light-emitting unit 20 corresponds to one pixel circuit 410. Optionally, within the arrangement space of one pixel unit 10, the three pixel circuits corresponding to the first light-emitting unit 21, the second light-emitting unit 22, and the third light-emitting unit 23 are arranged side by side along the first direction X, just like the three first vias 101.

[0031] For example, refer to Figure 3 The pixel circuit 410 can be composed of several thin-film transistors T and storage capacitors Cst. The specific circuit structure can be designed by oneself, and the embodiments of the present invention do not limit it.

[0032] Optionally, the display panel also includes scan lines and data lines, with a first direction X parallel to the extension direction of the scan lines and a second direction Y parallel to the extension direction of the data lines.

[0033] As those skilled in the art will understand, scan lines are used to transmit scan signals to pixel circuits, and data lines are used to transmit data signals to pixel circuits. By setting the first direction X to be parallel to the extension direction of the scan lines and the second direction Y to be parallel to the extension direction of the data lines, it is convenient for pixel circuits arranged in the same row along the first direction X to be electrically connected to the same scan lines, and it is also convenient for pixel circuits arranged in the same column along the second direction Y to be electrically connected to the same data lines. In general, the technical solution of the embodiments of the present invention can adjust the arrangement of the light-emitting units 20 without changing the original arrangement of the array layer 40, and thus improve the pixel aperture ratio by adjusting the arrangement of the pixel openings 61.

[0034] Reference Figure 2 Optionally, along the first direction X, the plurality of first vias 101 include a first sub-via 1011, a second sub-via 1012 and a third sub-via 1013 arranged in sequence and periodically. The first sub-via 1011 is correspondingly disposed to the first anode 211, the second sub-via 1012 is correspondingly disposed to the third anode 231 and the third sub-via 1013 is correspondingly disposed to the second anode 221.

[0035] Specifically, for the three anode vias arranged side by side along the first direction X in the same pixel unit 10, the middle second sub-via 1012 is set to correspond with the third anode 231, and the first sub-vias 1011 and the third sub-vias 1013 on both sides are set to correspond with the first anode 211 and the second anode 221 respectively, which facilitates the layout of the first connection structure 70, shortens the length of the first connection structure 70, and reduces the impedance during signal transmission.

[0036] It should be noted that the correspondence between the first via 101 and the anode structure 201 is not limited to this, as long as the three first vias 101 in a pixel unit 10 are electrically connected to the three anode structures 201 in a one-to-one correspondence.

[0037] Reference Figure 2 In one embodiment, the light-emitting areas of the first light-emitting unit 21, the second light-emitting unit 22, and the third light-emitting unit 23 can all be polygonal, such as rectangular (mostly rounded rectangles due to process limitations). Correspondingly, the projection shape of the pixel opening 61 corresponding to the first light-emitting unit 21, the second light-emitting unit 22, and the third light-emitting unit 23 onto the substrate is rectangular (rounded rectangle).

[0038] Figure 4 This is a schematic diagram of another display panel structure provided in an embodiment of the present invention, such as... Figure 4 As shown, in other embodiments, optionally, the light-emitting areas of the first light-emitting unit 21, the second light-emitting unit 22, and the third light-emitting unit 23 are all curved.

[0039] The curved shape can include shapes such as circles or ellipses. The shape of the light-emitting area of ​​any two of the first light-emitting unit 21, the second light-emitting unit 22, and the third light-emitting unit 23 can be the same curved shape or different curved shapes. This embodiment of the invention does not limit this.

[0040] The shape of the light-emitting area is defined by the shape of the pixel opening. In existing solutions, when designing curved pixel openings, in order to ensure that the spacing between adjacent light-emitting units meets the requirements, the existing polygonal pixel opening design is usually based on the method of inscribed circle or ellipse to obtain a circular or elliptical pixel opening, so that the light-emitting unit has a circular or elliptical light-emitting area, resulting in a large loss of pixel opening ratio.

[0041] Figure 4 In the diagram, markings 011, 012, and 013 respectively represent the regions of the rectangular pixel openings originally corresponding to the three-color light-emitting units (R, G, B). Figure 2 (The rectangular pixel openings are consistent), see reference Figure 4 Using the pixel arrangement provided in this embodiment, since the center line connecting the three light-emitting units 20 in a pixel unit 10 forms an acute triangle, the distance between the third light-emitting unit 23 and the first light-emitting unit 21 (second light-emitting unit 22) includes the distance in the oblique direction (the direction that intersects both the first direction X and the second direction Y). When the distance between adjacent light-emitting units (PDL gap) meets the requirements, because the panel size is larger in the oblique direction, there is sufficient space to expand the opening space of the third light-emitting unit 23, increasing the aperture ratio of the third light-emitting unit 23, thereby increasing the overall pixel aperture ratio. (Refer to...) Figure 4 Based on the pixel arrangement provided in the embodiments of the present invention, when the shape of the light-emitting area of ​​each light-emitting unit 20 is designed to be curved, the pixel opening 61 corresponding to the third light-emitting unit 23 can be made to partially exceed the range defined by the original rectangular pixel opening (013). Compared with the original rectangular pixel opening, which can only incise the elliptical pixel opening within the range defined by the original rectangular pixel opening, the opening area of ​​the third light-emitting unit 23 can be further increased, thereby improving the overall aperture ratio of the panel.

[0042] Figure 5 It is along Figure 4 The cross-sectional structural diagram of the display panel taken from EE' is shown below. Figure 4 and Figure 5 Optionally, the display panel 100 further includes a thin film encapsulation layer 80 and a color filter layer 90. The thin film encapsulation layer 80 is located on the side of the pixel limiting layer 60 away from the substrate 30. The color filter layer 90 is located on the side of the thin film encapsulation layer 80 away from the substrate 30. The color filter layer 90 includes a plurality of filter units 91, and the filter units 91 are arranged in a one-to-one correspondence with the light-emitting units 20. The pixel opening 61 includes a first pixel opening 611, a second pixel opening 612, and a third pixel opening 613. The first pixel opening 611 is arranged in a corresponding manner with the first light-emitting unit 21, the second pixel opening 612 is arranged in a corresponding manner with the second light-emitting unit 22, and the third pixel opening 613 is arranged in a corresponding manner with the third light-emitting unit 23. The projection shapes of the first pixel opening 611, the second pixel opening 612, and the third pixel opening 613 on the substrate 30 are all curved.

[0043] The thin-film encapsulation layer 80 is composed of an inorganic encapsulation layer and an organic encapsulation layer, used to protect the underlying light-emitting element and circuit structure. In the color filter layer 90, filter units 91 are arranged in a one-to-one correspondence with light-emitting units 20. Specifically, the filter units 91 and light-emitting units 20 overlap in a direction perpendicular to the substrate 30, and the color of the light allowed to pass through the filter unit 91 is consistent with the color of the light emitted by the corresponding light-emitting unit 20; in other words, the wavelength of the light allowed to pass through the filter unit 91 includes the wavelength of the light emitted by the corresponding light-emitting unit 20. Furthermore, referring to… Figure 5 A light-shielding structure 92 is provided between adjacent filter units 91 to prevent light crosstalk.

[0044] Specifically, in related technologies, by setting a color filter layer 90 on the side of the thin film encapsulation layer 80 away from the light-emitting unit 20, it can replace the polarizer to prevent ambient light reflection. In addition, setting a color filter layer on the light-emitting side has advantages over setting a polarizer, such as improving light transmittance, reducing power consumption, optimizing color purity and contrast, reducing panel thickness, and optimizing panel bending performance. However, setting a color filter layer 90 on the thin film encapsulation layer 80 to eliminate the traditional polarizer will increase the reflected light of the metal anode structure. The periodic filter units 91 and the light-shielding structure 92 in the color filter layer 90 will form a two-dimensional grating, causing diffraction and interference of ambient reflected light. If polygonal pixel openings are still used, the diffraction energy will be concentrated at the sharp corners of the polygons. After coherent superposition, diffraction problems such as starbursts, color separation, and color noise when the screen is off will cause display defects. In this embodiment, by designing the shape of the light-emitting area of ​​the light-emitting unit 20 (the projected shape of the pixel opening 61) as a curved shape, the light-emitting area has no parallel straight edges and sharp corners, which can make the diffraction energy evenly distributed across the entire angle, eliminate directional strong diffraction peaks, destroy the constructive interference conditions between pixels, significantly suppress the diffraction color patterns visible to the naked eye, and improve the display effect.

[0045] It should be noted that the curved pixel opening design can also be applied to other design scenarios, and the embodiments of the present invention do not limit this.

[0046] The shape design of the corresponding pixel opening will be further explained in detail below, taking into account the different color combinations of the first light-emitting unit 21, the second light-emitting unit 22 and the third light-emitting unit 23.

[0047] Reference Figure 4 In one embodiment, optionally, the light emission color of the third light-emitting unit 23 is blue (B); one of the first light-emitting unit 21 and the second light-emitting unit 22 emits red (R) and the other emits green (G); along the second direction Y, the center of the first light-emitting unit 21 overlaps with the third light-emitting unit 23, and the center of the second light-emitting unit 22 overlaps with the third light-emitting unit 23.

[0048] For example, Figure 4 The illustration is based on the example where the first light-emitting unit 21 emits red (R) light and the second light-emitting unit 22 emits green (G) light. In other embodiments, the first light-emitting unit 21 may emit green (G) light and the second light-emitting unit 22 may emit red (R) light.

[0049] Reference Figure 4 By employing the pixel arrangement method provided in this embodiment of the invention, the third light-emitting unit 23 in any pixel unit 10 is independently positioned in the first direction X, thereby allowing the third light-emitting unit to have a larger placement space (a larger aperture ratio). The first light-emitting unit 21 and the second light-emitting unit 22 both overlap with the third light-emitting unit 23 along the second direction Y. Based on this, considering the difference in luminous efficiency among red, green, and blue colors, setting the light emission color of the third light-emitting unit 23 with a larger aperture area to blue helps to ensure the service life of the blue light-emitting unit and extend the display life of the product.

[0050] Reference Figure 4 Optionally, the first acute triangle T1 is an isosceles triangle, and the center of the third light-emitting unit 23 is located on the perpendicular bisector of the line connecting the centers of the first light-emitting unit 21 and the second light-emitting unit 22. This arrangement allows the central region of the third light-emitting unit 23 to overlap with the spacing between the first and second light-emitting units 21 and 22 along the second direction Y. While ensuring the spacing between adjacent light-emitting units meets requirements, more space can be used to set the pixel opening corresponding to the third light-emitting unit 23, thus improving the aperture ratio.

[0051] Furthermore, when the light emission color of the third light-emitting unit 23 is blue (B), and one of the first light-emitting unit 21 and the second light-emitting unit 22 emits red (R) and the other emits green (G), the shape of the pixel opening 61 can be designed as follows.

[0052] As one possible implementation method, refer to Figure 4 Optionally, the projection shape of the first pixel opening 611 on the substrate is a first circle C1; the projection shape of the second pixel opening 612 on the substrate is a second circle C2; ​​the projection shape of the third pixel opening 613 on the substrate is a first ellipse O1; the minor axis of the first ellipse O1 is greater than the diameter of the first circle C1 and the diameter of the second circle C2; ​​the major axis of the first ellipse O1 is greater than the sum of the diameters of the first circle C1 and the second circle C2.

[0053] The diameters of the first circle C1 and the second circle C2 may be equal or unequal, and this embodiment of the invention does not limit this. The minor axis of the first ellipse O1 is greater than the diameters of both the first circle C1 and the second circle C2; ​​specifically, the minor axis of the first ellipse O1 is greater than the largest diameter of either the first circle C1 or the second circle C2.

[0054] Referring to the explanation above, since the central region of the third pixel opening 613 overlaps with the gap between the first pixel opening 611 and the second pixel opening 612 in the second direction Y, while ensuring that the spacing between two adjacent pixel openings 61 meets the requirements, the central region of the third pixel opening 613 in the first direction X can be appropriately expanded (not limited by the area where the original rectangular pixel opening (013) is located), thereby enabling the third light-emitting unit 23 to have a larger opening area and improve the opening ratio.

[0055] Specifically, in this embodiment, the third pixel opening 613 adopts an elliptical design. By increasing the minor axis of the first ellipse O1, i.e., setting the minor axis length of the first ellipse O1 to be greater than the diameter of the first circle C1 and the diameter of the second circle C2, the opening area of ​​the third pixel opening 613 can be increased compared to existing inscribed circle or elliptical schemes, thus improving the aperture ratio. For example, refer to... Figure 4 Taking the example that the width of the rectangular pixel opening 013 is equal to the maximum side length of the square pixel opening (011) and the square pixel opening (012), based on the pixel arrangement provided by the embodiment of the present invention, the minor axis length of the first ellipse O1 can be greater than the width of the rectangular pixel opening (013) designed in the original way. Compared with the existing incision scheme, the aperture ratio loss can be reduced, thereby improving the aperture ratio.

[0056] As another feasible implementation method Figure 6 This is a schematic diagram of another display panel structure provided in an embodiment of the present invention, such as... Figure 6 As shown, in other embodiments, optionally, the projection shape of the first pixel opening 611 on the substrate is a first circle C1; the projection shape of the second pixel opening 612 on the substrate is a second circle C2; ​​the projection shape of the third pixel opening 613 on the substrate is a first curved shape Q1, the first curved shape Q1 being the combined shape of the center-aligned third circle C3 and the second ellipse O2; the diameter of the third circle C3 is greater than the minor axis length of the second ellipse O2, the diameter of the first circle C1, and the diameter of the second circle C2.

[0057] Regarding the first curvilinear polygon Q1, refer to... Figure 6The second ellipse O2 and the third circle C3 overlap, and together (connected) form the first curvilinear shape Q1. Since the diameter of the third circle C3 is greater than the minor axis of the second ellipse O2, a portion of the third circle C3 extends beyond the area containing the second ellipse O2. Similarly, along the major axis of the second ellipse O2, a portion of the second ellipse O2 also extends beyond the area containing the third circle C3. After their combination, a portion of the outline of the first curvilinear shape Q1 is the outline of the second ellipse O2, and another portion is the outline of the third circle C3. Specifically, Figure 6 The third circle C3 includes two dashed outlines and two solid outlines. The outline of the first curved shape Q1 includes the two solid outlines of the third circle C3 and the outline of the second ellipse O2 that is not covered by the third circle C3.

[0058] This embodiment ( Figure 6 ) and the above embodiments ( Figure 4 The expansion methods differ. For details, please refer to... Figure 6 In this embodiment, the third pixel opening 613 adopts a combined shape of the third circle C3 and the second ellipse O2 (first curved shape Q1). The second ellipse O2 can be obtained by inscribed ellipse. The diameter of the third circle C3 is larger than the minor axis of the second ellipse O2, the diameter of the first circle C1, and the diameter of the second circle C2. In this way, the opening area of ​​the third pixel opening 613 can be increased by the large central size of the third circle C3, thereby improving the aperture ratio, while ensuring that the spacing requirements between adjacent light-emitting units are not affected.

[0059] As another feasible implementation method Figure 7 This is a schematic diagram of another display panel structure provided in an embodiment of the present invention, such as... Figure 7 As shown, in other embodiments, optionally, the projection shape of the first pixel opening 611 on the substrate is a first circle C1; the projection shape of the second pixel opening 612 on the substrate is a second circle C2; ​​the third pixel opening 613 includes a first sub-opening 6131, a second sub-opening 6132, and a third sub-opening 6133 arranged side by side along the first direction X, the first sub-opening 6131, the second sub-opening 6132, and the third sub-opening 6133 exposing the same anode structure 201 (third anode 231); the projection shape of the first sub-opening 6131 and the third sub-opening 6133 on the substrate is a fourth circle C4, the projection shape of the second sub-opening 6132 on the substrate is a fifth circle C5, and the diameter of the fifth circle C5 is greater than the diameter of the fourth circle C4, the diameter of the first circle C1, and the diameter of the second circle C2.

[0060] This embodiment ( Figure 7 ) and the above embodiments ( Figure 4The expansion methods differ. Specifically, in this embodiment, the third pixel opening 613 corresponding to the third light-emitting unit 23 includes a first sub-opening 6131, a second sub-opening 6132, and a third sub-opening 6133. The middle second sub-opening 6132 has a larger diameter, which can exceed the range limited by the original rectangular pixel opening. This helps to reduce the aperture ratio loss and improve the aperture ratio, while ensuring that the spacing requirements between adjacent light-emitting units are not affected.

[0061] It should be noted that although the first sub-opening 6131, the second sub-opening 6132, and the third sub-opening 6133 are independent of each other (any two are spaced apart from each other), they expose the same anode structure 201 (third anode 231) and correspond to the same mask opening 023. Therefore, the first sub-opening 6131, the second sub-opening 6132, and the third sub-opening 6133 together define the same third light-emitting unit 23. The light-emitting layers in the first sub-opening 6131, the second sub-opening 6132, and the third sub-opening 6133 are deposited and emit light at the same time.

[0062] Reference Figure 7 Optionally, the distance between the first sub-opening 6131 and the second sub-opening 6132, and the distance between the third sub-opening 6133 and the second sub-opening 6132, are less than the distance between any two adjacent pixel openings 61.

[0063] Specifically, there is usually a large gap between two adjacent pixel openings 61 to prevent optical crosstalk. Although this embodiment sets the third pixel opening 613 to include three independent sub-openings: the first sub-opening 6131, the second sub-opening 6132, and the third sub-opening 6133, all three still expose the same anode structure 201 (the third anode 231). Therefore, the light-emitting units corresponding to the three sub-openings emit light together. Thus, the distance between the first sub-opening 6131 and the second sub-opening 6132, and the distance between the third sub-opening 6133 and the second sub-opening 6132, only need to meet the lower limit requirements of the process when processing pixel openings on the pixel definition layer.

[0064] For example, the distance between the first sub-opening 6131 and the second sub-opening 6132, and the distance between the third sub-opening 6133 and the second sub-opening 6132, can all be greater than or equal to 2 μm. Here, 2 μm represents the aforementioned process lower limit. It can be understood that the smaller the distance between the first sub-opening 6131 and the second sub-opening 6132, and the smaller the distance between the third sub-opening 6133 and the second sub-opening 6132, the better (the closer to the process lower limit, the better), thus minimizing the opening ratio loss to a greater extent.

[0065] In summary, the above embodiments, taking the third light-emitting unit 23 emitting blue (B) light, one of the first light-emitting unit 21 and the second light-emitting unit 22 emitting red (R) light, and the other emitting green (G) light, as an example, have provided a detailed description of the shape of the pixel opening. Another design scheme is provided below.

[0066] Figure 8 This is a schematic diagram of another display panel structure provided in an embodiment of the present invention, such as... Figure 8 As shown, in other embodiments, optionally, the first light-emitting unit 21 emits red (R), the second light-emitting unit 22 emits blue (B), and the third light-emitting unit 23 emits green (G); the projection shapes of the first pixel opening 611, the second pixel opening 612, and the third pixel opening 613 on the substrate are all circular, and the diameter of the second pixel opening 612 is larger than the diameter of the first pixel opening 61 and the diameter of the third pixel opening 613.

[0067] Figure 9 This is a schematic diagram of another display panel structure provided in an embodiment of the present invention, such as... Figure 9 As shown, in other embodiments, the first light-emitting unit 21 may emit blue (B), the second light-emitting unit 22 may emit red (R), and the third light-emitting unit 23 may emit green (G); the projection shapes of the first pixel opening 611, the second pixel opening 612, and the third pixel opening 613 on the substrate are all circular, and the diameter of the first pixel opening 611 is larger than the diameter of the second pixel opening 612 and the diameter of the third pixel opening 613.

[0068] Specifically, in this embodiment, the blue light-emitting unit (B) and the red light-emitting unit (R) are arranged side by side along the first direction X. The projection shapes of the first pixel opening 611, the second pixel opening 612, and the third pixel opening 613 on the substrate are all circular. On the one hand, this can improve the diffraction problem. On the other hand, combined with the pixel arrangement in which the three-color light-emitting units in the first pixel unit 11 and the second pixel unit 12 are arranged in acute-angled triangles and the acute-angled triangles corresponding to the first pixel unit 11 and the second pixel unit 12 are inverted along the second direction Y, the light-emitting units in any two adjacent rows of light-emitting units along the second direction Y can be staggered in the first direction X. This makes the spacing direction of adjacent light-emitting units in two adjacent rows include the oblique direction (the direction that intersects both the first direction X and the second direction Y). Since the size of the oblique direction of the display panel is larger, there is more space for arranging pixel openings while ensuring that the spacing (PDL gap) between adjacent light-emitting units meets the basic requirements, which is beneficial to improving the pixel aperture ratio.

[0069] Reference Figure 8 and Figure 9 In this embodiment, optionally, the first acute triangle T1 is an isosceles triangle, and the center of the third light-emitting unit 23 is located on the perpendicular bisector of the line connecting the centers of the first light-emitting unit 21 and the second light-emitting unit 22.

[0070] Based on the same inventive concept, embodiments of the present invention also provide a display device. For example, Figure 10 This is a schematic diagram of the structure of a display device provided in an embodiment of the present invention, such as... Figure 10 As shown, the display device 200 includes the display panel 100 provided in any of the above embodiments, and therefore has the same beneficial effects as the above display panel. The similarities can be found in the descriptions of the above embodiments, and will not be repeated here. The display device 200 can be... Figure 10 The mobile phone shown can also be any electronic product with display function, including but not limited to the following categories: television, laptop, desktop monitor, tablet computer, digital camera, smart bracelet, smart glasses, in-vehicle display, medical equipment, industrial control equipment, touch interactive terminal, etc. The embodiments of the present invention do not make any special limitations on this.

[0071] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. A display panel, characterized in that, include: Multiple pixel units, wherein each pixel unit includes at least two light-emitting units; The plurality of pixel units include first pixel units and second pixel units arranged alternately side by side along a first direction; the light-emitting units in the first pixel unit and the second pixel unit each include a first light-emitting unit, a second light-emitting unit, and a third light-emitting unit; the light-emitting areas of the first light-emitting unit, the second light-emitting unit, and the third light-emitting unit are all curved; along the first direction, the first light-emitting unit and the second light-emitting unit in the first pixel unit are arranged side by side with the third light-emitting unit in the second pixel unit and are center-aligned. In the first pixel unit, the center line connecting the first light-emitting unit, the second light-emitting unit, and the third light-emitting unit forms a first acute triangle; in the second pixel unit, the center line connecting the first light-emitting unit, the second light-emitting unit, and the third light-emitting unit forms a second acute triangle; the first acute triangle and the second acute triangle are inverted in shape in the second direction; the first direction and the second direction intersect.

2. The display panel according to claim 1, characterized in that, The first acute triangle is an isosceles triangle, and the center of the third light-emitting unit is located on the perpendicular bisector of the line connecting the centers of the first light-emitting unit and the second light-emitting unit.

3. The display panel according to claim 1, characterized in that, The display panel also includes: Substrate; An array layer; located on one side of the substrate; the array layer includes pixel circuitry; A planarization layer is located on the side of the array layer away from the substrate; A pixel defining layer is located on the side of the planarization layer away from the substrate; the pixel defining layer includes a plurality of pixel openings; the light-emitting unit includes a stacked anode structure and a light-emitting layer, the anode structure is located between the planarization layer and the pixel defining layer, the pixel openings expose a portion of the surface of the anode structure, and at least a portion of the light-emitting layer is located within the pixel openings; A first connection structure is located between the planarization layer and the pixel defining layer; the display panel is provided with a first via that penetrates at least the planarization layer along a direction perpendicular to the plane of the substrate, the first via overlapping the first connection structure but not overlapping the anode structure; the anode structure is electrically connected to the pixel circuit through the first connection structure and the first via.

4. The display panel according to claim 3, characterized in that, Along the first direction, a plurality of the first vias are arranged side by side; The first light-emitting unit includes a first anode, the second light-emitting unit includes a second anode, and the third light-emitting unit includes a third anode; in the pixel units located in the same row in the first direction, the first anode and the second anode and the third anode have a first gap region in the second direction, and the first via is located in the first gap region along a direction perpendicular to the plane of the substrate.

5. The display panel according to claim 4, characterized in that, Along the first direction, the plurality of first vias include a first sub-via, a second sub-via, and a third sub-via arranged in sequence and periodically. The first sub-via is disposed corresponding to the first anode, the second sub-via is disposed corresponding to the third anode, and the third sub-via is disposed corresponding to the second anode.

6. The display panel according to claim 3, characterized in that, The display panel also includes: A thin-film encapsulation layer is located on the side of the pixel defining layer away from the substrate; A color filter layer is located on the side of the thin film encapsulation layer away from the substrate; the color filter layer includes multiple filter units, and the filter units are arranged in a one-to-one correspondence with the light-emitting units; The pixel opening includes a first pixel opening, a second pixel opening, and a third pixel opening; the first pixel opening is configured corresponding to the first light-emitting unit, the second pixel opening is configured corresponding to the second light-emitting unit, and the third pixel opening is configured corresponding to the third light-emitting unit.

7. The display panel according to claim 6, characterized in that, The third light-emitting unit emits blue light; one of the first and second light-emitting units emits red light, and the other emits green light. Along the second direction, the center of the first light-emitting unit overlaps with the third light-emitting unit, and the center of the second light-emitting unit overlaps with the third light-emitting unit.

8. The display panel according to claim 7, characterized in that, The projection shape of the first pixel opening on the substrate is a first circle; The projection shape of the second pixel opening on the substrate is a second circle; The projection shape of the third pixel opening on the substrate is a first ellipse; the minor axis of the first ellipse is greater than the diameter of the first circle and the diameter of the second circle.

9. The display panel according to claim 7, characterized in that, The projection shape of the first pixel opening on the substrate is a first circle; The projection shape of the second pixel opening on the substrate is a second circle; The projection shape of the third pixel opening on the substrate is a first curved shape, which is a combined shape of a third circle and a second ellipse aligned at the center; the diameter of the third circle is greater than the minor axis of the second ellipse, the diameter of the first circle, and the diameter of the second circle.

10. The display panel according to claim 7, characterized in that, The projection shape of the first pixel opening on the substrate is a first circle; The projection shape of the second pixel opening on the substrate is a second circle; The third pixel opening includes a first sub-opening, a second sub-opening, and a third sub-opening arranged side by side along the first direction. The first sub-opening, the second sub-opening, and the third sub-opening expose the same anode structure. The projection shapes of the first sub-opening and the third sub-opening on the substrate are both fourth circles, and the projection shape of the second sub-opening on the substrate is a fifth circle. The diameter of the fifth circle is larger than the diameter of the fourth circle, the diameter of the first circle, and the diameter of the second circle.

11. The display panel according to claim 10, characterized in that, The distance between the first sub-aperture and the second sub-aperture, and the distance between the third sub-aperture and the second sub-aperture, are less than the distance between any two adjacent pixel openings.

12. The display panel according to claim 6, characterized in that, The third light-emitting unit emits green light, and the projection shapes of the first pixel opening, the second pixel opening, and the third pixel opening on the substrate are all circular. The first light-emitting unit emits red light, and the second light-emitting unit emits blue light; the diameter of the second pixel opening is larger than the diameter of the first pixel opening and the diameter of the third pixel opening; or, The first light-emitting unit emits blue light, and the second light-emitting unit emits red light; the diameter of the first pixel opening is larger than the diameter of the second pixel opening and the diameter of the third pixel opening.

13. The display panel according to claim 1, characterized in that, The display panel further includes scan lines and data lines, wherein the first direction is parallel to the extension direction of the scan lines, and the second direction is parallel to the extension direction of the data lines.

14. A display device, characterized in that, Includes the display panel as described in any one of claims 1-13.

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