Display panel and display device
The display panel addresses color separation issues by employing black matrix openings with arc-shaped transitions at corners, improving display clarity under ambient light through reduced diffraction.
Patent Information
- Application Number
- JP2025186788
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2020-06-17
- Filing Date
- 2025-11-05
- Publication Date
- 2026-01-23
AI Technical Summary
Existing display panels suffer from color separation issues due to diffraction effects at sharp corners of black matrix openings, which exacerbate the phenomenon of color separation under ambient light.
The display panel design incorporates black matrix openings with arc-shaped transitions at corner positions, reducing the diffraction effect and minimizing color separation by using a black matrix layer with polygonal shapes and arc-shaped corners to transition between edges, combined with a color filter layer to manage light emission and reflection.
The design effectively reduces color separation and enhances the display quality by minimizing diffraction effects, ensuring clearer image presentation under ambient light conditions.
Smart Images
Figure 2026012427000001_ABST
Abstract
Description
[Technical Field]
[0001] CROSS-REFERENCE TO RELATED APPLICATIONS This application claims priority from a Chinese patent application filed with the China Patent Office on June 17, 2020, bearing application number 202010552325.6 and entitled "Display Panel and Display Device," the entire disclosure of which is incorporated herein by reference.
[0002] The present invention relates to the field of semiconductor technology, and in particular to display panels and display devices. [Background technology]
[0003] With the development of multimedia, display devices have become increasingly important, and correspondingly, several display devices have been used, such as liquid crystal displays and organic light-emitting displays.
[0004] Among display devices, organic light-emitting displays use organic light-emitting devices that generate light through the recombination of electrons and holes to display images, and have advantages such as fast response time, high brightness, wide viewing angle, and low power consumption. Summary of the Invention
[0005] The display panel provided by the present invention comprises: a base substrate, a light-emitting layer, an encapsulation layer, and a black matrix layer; the light-emitting layer is disposed on the base substrate side and has a plurality of light-emitting portions; the encapsulation layer is disposed on a side of the light-emitting layer remote from the base substrate; the black matrix layer is disposed on a side of the encapsulation layer away from the light emitting layer, and has a black matrix opening in an area corresponding to the light emitting portion, the black matrix opening having a polygonal body shape, and at least at corner positions of the polygon, a circular arc curve for realizing a transition connection between edges of the polygon; a color filter layer, the color filter layer being disposed on a side of the black matrix layer remote from the encapsulation layer and having color resist portions in areas corresponding to the black matrix openings;
[0006] In a possible implementation, the black matrix opening at the corner is an arc projecting towards a side away from the center of the black matrix opening.
[0007] In a possible implementation, the black matrix opening at the corner is an arc with a corner point as the center of the circle, the corner point being the intersection of extensions of the adjacent edges.
[0008] In a possible implementation, the black matrix opening at the corner is an arc concave towards the side closer to the centre of the black matrix opening.
[0009] In a possible implementation, the black matrix opening at the corner is an arc with a corner point as the center of the circle, the corner point being the intersection of extensions of the adjacent edges.
[0010] In a possible implementation, the body shape of the black matrix opening is a square, a pentagon, or a hexagon; The radius of the arc is one-fifth to three-fifths of the minimum length of the edge of the black matrix opening.
[0011] In a possible implementation, the edges of the black matrix openings, except for the corner locations, are linear.
[0012] In a possible implementation, the edges of the black matrix opening, except at the corner locations, are arc segments projecting away from the center of the black matrix opening.
[0013] In a possible implementation, the edges of the black matrix opening, except at the corner locations, are arc segments concave towards the side closer to the center of the black matrix opening.
[0014] In a possible implementation, the arc of the corner location directly connects to the arc segment of the edge.
[0015] In a possible implementation, the orthogonal projection of the black matrix openings on the base substrate covers the orthogonal projection of the light emitting portions on the base substrate.
[0016] In a possible implementation, the shape of the light emitting portion is similar to the shape of the body of the black matrix opening.
[0017] In a possible implementation, the center of the black matrix opening overlaps the center of the light emitting portion.
[0018] In a possible implementation, a pixel definition layer is provided between the base substrate and the light-emitting layer, the pixel definition layer has a plurality of pixel definition openings, the light-emitting portion is disposed in the pixel definition openings, and the shape of the light-emitting portion is the same as the shape of the pixel definition openings.
[0019] In a possible implementation, the body shape of the black matrix opening is 2 to 6 micrometers outside the shape of the light emitting portion.
[0020] In a possible implementation, the black matrix layer excluding the black matrix opening is a black matrix body, and the orthogonal projection of the color resist portion on the base substrate covers a portion of the black matrix body around the black matrix opening.
[0021] A possible implementation includes a touch layer between the encapsulation layer and the black matrix layer, the touch layer includes a first insulating layer, a first metal layer, a second insulating layer, a second metal layer, and a third insulating layer, which are sequentially disposed on the encapsulation layer side; the second metal layer includes a plurality of first touch electrodes extending along a first direction and a plurality of second touch electrodes extending along a second direction, the first touch electrodes and the second touch electrodes cross an insulation, each of the first touch electrodes includes a plurality of first sub-touch electrode blocks connected to each other, and each of the second touch electrodes includes a plurality of second sub-touch electrode blocks spaced apart from each other; The first metal layer includes a plurality of bridge electrodes, and each of the second sub-touch electrode blocks in the same second direction is electrically connected via the bridge electrodes.
[0022] In a possible implementation, the first sub-touch electrode block, the second sub-touch electrode block and the bridge electrode all have mesh holes, and the orthogonal projection of the mesh holes on the base substrate covers the orthogonal projection of the light-emitting portion on the base substrate.
[0023] In a possible implementation method, the orthogonal projection of the area of the black matrix excluding the black matrix openings on the base substrate covers the area of the first sub-touch electrode block excluding the mesh holes, covers the area of the second sub-touch electrode block excluding the mesh holes, and covers the area of the bridge electrode excluding the mesh holes.
[0024] A possible implementation has a protective layer on the side of the color filter layer remote from the black matrix layer.
[0025] A possible implementation comprises a cover plate or cover film layer on the side of the protective layer remote from the color filter layer.
[0026] Another display panel provided by an embodiment of the present invention comprises: a base substrate, a pixel defining layer, a light emitting layer, an encapsulating layer, a black matrix layer, and a color filter layer; the pixel-defining layer is disposed on the base substrate side and has a plurality of pixel-defining openings; the light-emitting layer is disposed on a side of the pixel-defining layer away from the base substrate, the light-emitting layer having a plurality of light-emitting portions disposed in the pixel-defining apertures; the encapsulation layer is disposed on a side of the light-emitting layer remote from the pixel-defining layer; the black matrix layer is disposed on a side of the encapsulation layer away from the light-emitting layer, and has a black matrix opening in an area corresponding to the light-emitting portion, the shape of the black matrix opening being circular or elliptical, and an orthogonal projection of the black matrix opening on the base substrate covers an orthogonal projection of the pixel-defining opening on the base substrate; The color filter layer is disposed on the side of the black matrix layer away from the encapsulation layer and has color resist portions in areas corresponding to the black matrix openings.
[0027] In a possible implementation, the center of the black matrix opening overlaps the center of the light emitting portion.
[0028] An embodiment of the present invention further provides a display device comprising a display panel provided by an embodiment of the present invention or comprising a display panel further provided by an embodiment of the present invention. [Brief explanation of the drawings]
[0029] [Figure 1A] 1 is a schematic cross-sectional structural diagram of a display panel provided by an embodiment of the present invention; [Figure 1B] 1 is a schematic plan view of a display panel according to an embodiment of the present invention; [Figure 2A] 1 is a schematic structural diagram of a hexagonal black matrix opening with convex corners at the corner positions provided by an embodiment of the present invention; [Figure 2B]1 is a schematic structural diagram of a square black matrix opening with convex corners at the corner positions provided by an embodiment of the present invention; [Figure 2C] 1 is a schematic structural diagram of a pentagonal black matrix opening with convex corners at the corner positions provided by an embodiment of the present invention; [Figure 3A] 1 is a schematic structural diagram of a hexagonal black matrix opening with concave corners at the corner positions provided by an embodiment of the present invention; [Figure 3B] 2 is a schematic structural diagram of a square black matrix opening with concave corners at the corner positions provided by an embodiment of the present invention; FIG. [Figure 3C] 1 is a schematic structural diagram of a pentagonal black matrix opening with concave corners at the corner positions provided by an embodiment of the present invention; [Figure 4A] 1 is a schematic structural diagram of a hexagonal black matrix opening with convex edges at the corner positions provided by an embodiment of the present invention; [Figure 4B] 1 is a schematic structural diagram of a hexagonal black matrix opening with concave corners and convex edges at the corner positions provided by an embodiment of the present invention; [Figure 5A] 1 is a schematic structural diagram of a square black matrix opening with convex corners and convex edges at the corner positions provided by an embodiment of the present invention; [Figure 5B] 2 is a schematic structural diagram of a square black matrix opening with concave corners and convex edges at the corner positions provided by an embodiment of the present invention; FIG. [Figure 6A] 1 is a schematic structural diagram of a pentagonal black matrix opening with convex corners and convex edges at the corner positions provided by an embodiment of the present invention; [Figure 6B] 1 is a schematic structural diagram of a pentagonal black matrix opening with concave corners and convex edges at the corner positions provided by an embodiment of the present invention; [Figure 7A]1 is a schematic structural diagram of a hexagonal black matrix opening with convex corners and concave edges at the corner positions provided by an embodiment of the present invention; [Figure 7B] 1 is a schematic structural diagram of a hexagonal black matrix opening with concave corners and concave edges at the corner positions provided by an embodiment of the present invention; [Figure 8A] 2 is a schematic structural diagram of a square black matrix opening with convex corners and concave edges at the corner positions provided by an embodiment of the present invention; FIG. [Figure 8B] 1 is a schematic structural diagram of a square black matrix opening with concave corners and concave edges at the corner positions provided by an embodiment of the present invention; [Figure 9A] 1 is a schematic structural diagram of a pentagonal black matrix opening with convex corners and concave edges at the corner positions provided by an embodiment of the present invention; [Figure 9B] 1 is a schematic structural diagram of a pentagonal black matrix opening with concave corners and concave edges at the corner positions provided by an embodiment of the present invention; [Figure 10A] 3 is a schematic diagram of a hexagonal black matrix opening covering a light-emitting portion provided by an embodiment of the present invention; [Figure 10B] 3 is a schematic diagram of a square black matrix opening covering a light-emitting portion provided by an embodiment of the present invention; [Figure 10C] 3 is a schematic diagram of a pentagonal black matrix opening covering a light-emitting portion provided by an embodiment of the present invention; [Figure 11A] 1 is a schematic diagram of a specific structure of a display panel provided by an embodiment of the present invention; [Figure 11B] FIG. 2 is a schematic top view of a second metal layer provided by an embodiment of the present invention. [Figure 12] 3 is a schematic diagram of a second metal layer with mesh holes provided by an embodiment of the present invention. [Figure 13A]FIG. 2 is a schematic diagram of a specific structure of another display panel provided by an embodiment of the present invention. [Figure 13B] 1 is a schematic plan view of another display panel provided by an embodiment of the present invention; [Figure 13C] 2 is a schematic plan view of another display panel provided by an embodiment of the present invention; FIG. DETAILED DESCRIPTION OF THE INVENTION
[0030] In order to clarify the purpose, technical solution and advantages of the embodiments of the present invention, the technical solution of the embodiments of the present invention will be described below clearly and completely with reference to the drawings of the embodiments of the present invention. It is clear that the described embodiments are only some embodiments of the present invention, and do not cover all embodiments. Based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the present invention.
[0031] Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning understood by those skilled in the art to which this invention belongs. Terms such as "first," "second," etc., used herein do not denote order, quantity, or importance, but are used only to distinguish different components. Terms such as "comprise" or "comprehensive" mean that the element or item preceding the word covers the elements or items listed after the word and their equivalents, without excluding other elements or items. Terms such as "connect" or "couple" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.
[0032] To keep the following description of embodiments of the present invention clear and concise, the present disclosure omits detailed descriptions of well-known functions and components.
[0033] 1A, 1B, and 2A, Fig. 1A is a schematic cross-sectional view of Fig. 1B along dotted line EF, and Fig. 2A is an enlarged view of a black matrix opening according to Fig. 1B. An embodiment of the present invention provides a display panel, including:
[0034] Base substrate 1: The base substrate 1 can be a glass substrate, a silicon substrate, or a flexible substrate, for example, it is polyethylene (PI), polycarbonate (PC), polyethylene terephthalate (PET), polycarbonate, polyethylene, polyacrylate, polycarbonate, polyarylate, polyetherimide, polyethersulfone, polyethylenediolterephthalate (PET), polyethylene (PE), polypropylene (PP), polysulfone (PSF), polymethyl methacrylate (PMMA), triacetate cellulose (TAC), cyclic olefin polymer (COP) and cyclic olefin copolymer (COC), etc.
[0035] Light-emitting layer 2: The light-emitting layer 2 is disposed on the side of the base substrate 1 and has a plurality of light-emitting portions 20. Specifically, the light-emitting portions 20 may include a first type light-emitting portion 21, a second type light-emitting portion 22, and a third type light-emitting portion 23. The first type light-emitting portion 21 may specifically be a light-emitting portion D that emits blue light, and the specific material is an organic light-emitting material that emits blue light. The second type light-emitting portion 22 may specifically be a light-emitting portion that emits red light, and the specific material is an organic light-emitting material that emits red light. The third type light-emitting portion 23 may specifically be a light-emitting portion that emits green light, and the specific material is an organic light-emitting material that emits green light.
[0036] Encapsulation layer 3: The encapsulation layer 3 is disposed on the side of the light-emitting layer 2 away from the base substrate 1. The encapsulation layer 3 may be a thin-film encapsulation layer, specifically, may include a first inorganic encapsulation layer, an organic encapsulation layer, and a second inorganic encapsulation layer stacked in sequence.
[0037] Black matrix layer 4: The black matrix layer 4 is disposed on the side of the encapsulation layer 3 away from the light-emitting layer 2 and has a black matrix opening 40 in the area corresponding to the light-emitting portion 20. The main shape of the black matrix opening 40 (shown by the dotted hexagonal frame in FIG. 2A ) is polygonal, with at least the corner positions 45 of the polygon being arc-shaped curves to realize transitional connections between the edges 46 of the polygon. The area outside the black matrix opening 40 is the black matrix main body, i.e., the area outside the black matrix opening 40 is understood to be the black matrix main body 44. The main shape of the black matrix opening 40 can be specifically understood as the main outline of the black matrix opening 40. While certain edges 46 can be nonlinear line segments, the overall shape remains polygonal. For example, the shape of the black matrix opening 40 can be rectangular, but the four edges of the rectangle can be arcs. Of course, each edge can also be straight. It can be specifically understood that the black matrix openings 40 correspond to the light-emitting portions 20, and that the orthogonal projection of the black matrix openings 40 on the base substrate 1 covers the orthogonal projection of the light-emitting portions 20 on the base substrate 1. The black matrix layer 4 is opened at the position corresponding to each light-emitting portion 20, forming a black matrix opening 40 corresponding to the light-emitting portion 20 in a one-to-one correspondence. Light emitted by the light-emitting portion 20 is emitted through the black matrix openings 40. As shown in FIGS. 1A and 1B , the black matrix openings 40 include a first-type black matrix opening 41 corresponding to the first-type light-emitting portion 21, a second-type black matrix opening 42 corresponding to the second-type light-emitting portion 22, and a third-type black matrix opening 43 corresponding to the third-type light-emitting portion 23. The main shape of the first-type black matrix opening 41 can be the same as the shape of the first-type light-emitting portion 21; for example, both can be hexagonal. The body shape of the second type black matrix opening 42 may be the same as the shape of the second type light-emitting portion 22, and the body shape of the third type black matrix opening 43 may be the same as the shape of the third type light-emitting portion 23.
[0038] Color filter layer 5: Color filter layer 5 is disposed on the side of black matrix layer 4 away from encapsulation layer 3 and has color resist portions 50 in areas corresponding to black matrix openings 40. Specifically, color resist portions 50 are disposed at positions corresponding to black matrix openings 40 in black matrix layer 4. Since black matrix openings 40 correspond to light-emitting portions 20, the positions of color resist portions 50 also correspond to light-emitting portions 21. Specifically, color resist portions 50 may include first-type color resist portions 51 corresponding to first-type light-emitting portions 21, second-type color resist portions 52 corresponding to second-type light-emitting portions 22, and third-type color resist portions 53 corresponding to third-type light-emitting portions 23. If first-type light-emitting portions 21 are light-emitting portions that emit blue light, first-type color resist portions 51 are blue color resist portions that transmit blue light and block the passage of other colors of light. When the second type light-emitting section 22 is a light-emitting section that emits red light, the second type color resist section 52 is a red color resist section that transmits red light and blocks the transmission of other light colors. When the third type light-emitting section 23 is a light-emitting section that emits green light, the third type color resist section 53 is a green color resist section that transmits green light and blocks the transmission of other light colors.
[0039] In the embodiment of the present invention, the body shape of the black matrix opening 40 is polygonal, and the black matrix opening 40 has an arc-shaped curve at least at the corner positions 45 of the polygon to realize a transition connection between each edge 46 of the polygon. Compared with the black matrix opening of a conventional display panel having sharp corners, the arc-shaped corner design in the embodiment of the present invention reduces the size change at the sharp corners and reduces the diffraction effect of reflected light generated after ambient light passes through the display panel, thereby weakening the phenomenon of color separation.
[0040] It may be understood that the display panel in the embodiment of the present invention does not need to include a circular polarizer. By using the color filter layer 5 and the black matrix layer 4 as provided in the embodiment of the present invention, the light emitted by the light-emitting unit 20 at the position where display is required, i.e., the position where the light-emitting unit 20 is located, is emitted through the black matrix opening 40 and does not affect the display. The position other than the light-emitting unit 20 is blocked by the black matrix body 44, preventing external ambient light from entering and acting as a circular polarizer to prevent reflection of external light.
[0041] Note that color separation refers to the phenomenon in which reflected light exhibits color separation (red, green, blue) under illumination by ambient light (such as a point light source or a linear light source) when the screen is closed. As shown in FIG. 1A, in the case of a display panel with a color filter layer and a black matrix layer instead of a circular polarizer, under ambient light, light passes through the color filter layer 5 to become monochromatic light, which then enters a metal film layer (e.g., an anode layer and / or cathode layer, not shown in FIG. 1A) at the bottom of the display panel. The monochromatic reflected light is then reflected by the metal film layer, and passes through the black matrix opening 40. Because the black matrix opening 40 is small (e.g., when the black matrix opening is λ*10), 2 (where λ is the wavelength of the reflected light), the black matrix opening 40 is rectangular or hexagonal. The sharp corners and the screen under ambient light (especially point light sources) inevitably produce diffraction effects of monochromatic light (R, G, B). These diffraction effects further exacerbate the degree of color separation.
[0042] In a specific implementation, as shown in FIG. 1A , a pixel-defining layer 7 is provided between the base substrate 1 and the light-emitting layer 2, and the pixel-defining layer 7 has a plurality of pixel-defining openings 70. The light-emitting portions 20 are located in the pixel-defining openings 70, and the shape of the light-emitting portions 20 is the same as the shape of the pixel-defining openings 70. It can be understood that in the manufacturing process of a display panel, the pixel-defining layer 7 having the pixel-defining openings 70 is first formed, and then the light-emitting portions 20 are formed in the pixel-defining openings 70. The shape of the light-emitting portions 20 is the same as the shape of the pixel-defining openings 70. It can be understood that the light-emitting portions 20 may specifically be positions occupied by light-emitting regions during the display process of the display panel, i.e., positions occupied by light-emitting regions of the display panel for each subpixel during a specific implementation. Although the light-emitting material at the position where the pixel-defining openings are manufactured may be larger than the area occupied by the pixel-defining openings, the light-emitting area is determined by the area of the light-emitting material at the power-on position, i.e., the light-emitting portion 20 is determined by the area of the light-emitting material in contact with the anode.
[0043] In a specific implementation, as shown in FIGS. 2A to 2C , the black matrix opening 40 at the corner position 45 is an arc that protrudes away from the center O of the black matrix opening 40. Specifically, the black matrix opening 40 at the corner position 45 is an arc that protrudes away from the center O' of the black matrix opening 40. The corner point O' is the intersection point of the extensions of adjacent edges 46. For example, as shown in FIG. 2A , the body shape of the black matrix opening 40 is a hexagon with six edges 46, and two adjacent edges 46 intersect with each other to form six corner positions 45, each of which has a corner point O'. The corner positions 45 can be set as non-closed arcs (i.e., outer convex arcs) that protrude away from the center of the black matrix opening 40, with the corner point O' as the center of the circle. A circular transition between adjacent edges 46 is realized at the corner positions 45. Alternatively, as shown in FIG. 2B , the body shape of the black matrix opening 40 has four edges 46, and two adjacent edges 46 intersect with each other to form four corner positions 45, each with a corner point O′. For each corner position 45, the corner point O′ can define a non-closed arc (i.e., an outer convex arc) that protrudes away from the center O of the black matrix opening, with the corner point O′ at the center of the circle, thereby realizing an arc-shaped transition between the adjacent edges 46 at the corner positions 45. Alternatively, as shown in FIG. 2C , the body shape of the black matrix opening 40 is a pentagon with five edges 46, and two adjacent edges 46 intersect with each other to form five corner positions 45. Each corner position 45 has a corner point O′. For each corner position 45, the corner point O′ can define a non-closed arc (i.e., an outer convex arc) that protrudes away from the center O of the black matrix opening, with the corner point O′ at the center of the circle, thereby realizing an arc-shaped transition between the adjacent edges 46 at the corner positions 45.
[0044] In a specific embodiment, the corner positions 45 of the black matrix opening 40 are arcs concave toward the center O of the black matrix opening 40. Specifically, the corner positions 45 of the black matrix opening 40 are arcs with a corner point O' as the center of a circle, which is concave toward the center O of the black matrix opening 40, and the corner point O' is the intersection of the extensions of adjacent edges 46. For example, as shown in FIG. 3A, the body shape of the black matrix opening 40 is a hexagon with six edges 46, and two adjacent edges 46 intersect with each other to form six corner positions 45, each of which has a corner point O'. For the corner positions 45, a non-closed arc (i.e., a concave arc) can be set with the corner point O' as the center of a circle and concave toward the center O of the black matrix opening, thereby achieving an arc-like transition between adjacent edges at the corner positions 45. Alternatively, as shown in FIG. 3B, the body shape of the black matrix opening is a rectangle with four edges 46. Two adjacent edges 46 intersect with each other to form four corner positions 45, each with a corner point O'. For each of the corner positions 45, a non-closed arc (i.e., a concave arc) can be set with the corner point O' as the center of a circle, concave toward the side closer to the center O of the black matrix opening, thereby realizing an arc-shaped transition between adjacent edges at the corner positions 45. Alternatively, as shown in FIG. 3C , the body shape of the black matrix opening 40 is a pentagon with five edges 46, and two adjacent edges 46 intersect with each other to form five corner positions 45. Each corner position 46 has a corner point O'. For each of the corner positions 45, a non-closed arc (i.e., a concave arc) can be set with the corner point O' as the center of a circle, concave toward the side closer to the center O of the black matrix opening, thereby realizing an arc-shaped transition between adjacent edges at the corner positions 45.
[0045] In certain embodiments, the body shape of the black matrix opening 40 is a rectangle, a pentagon, or a hexagon, and the radius of the arc may be one-fifth to one-half of the minimum length of the edge 46 of the black matrix opening 40. For example, as shown in FIG. 2A , the body shape of the black matrix opening 40 is a hexagon, and the hexagon has two opposite and parallel first-type edges 461, second-type edges 462 each connected to a first end of the first-type edge 461, and third-type edges 463 each connected to a second end of the first-type edge 461. Here, the extended length of the first-type edges 461 is greater than the extended length of the second-type edges 462 and greater than the extended length of the third-type edges 463. The extended length of the second-type edges 462 is the same as the extended length of the third-type edges 462. In the case of the hexagon, the arc radius of the corner position 45 may be one-fifth to one-half of the length 462 of the second-type edge. For example, as shown in FIG. 2B , the body shape of the black matrix opening 40 is a rectangle. The rectangle has two opposing and parallel fourth-type edges 464 and a fifth-type edge 465 connecting corresponding ends of each of the two fourth-type edges 464. Here, the extended length of the fourth-type edges 464 is greater than the extended length of the fifth-type edges 465. In the rectangle, the arc radius of the corner position 45 may be one-fifth to one-half of the length of the fifth-type edges 465. For example, as shown in FIG. 2C , the body shape of the black matrix opening 40 is a pentagon. The pentagon has two opposing and parallel sixth-type edges 466, seventh-type edges 467 connected to first ends of the sixth-type edges 466, and eighth-type edges 468 connecting two second ends of the two sixth-type edges 466. Here, the extension length of the sixth-type edges 466 is shorter than the extension length of the seventh-type edges 467. The length of the seventh-type edges 467 is shorter than the length of the eighth-type edges 468. In the pentagon, the arc radius of the corner positions 45 may be one-fifth to one-half of the length of the sixth-type edges 466.In an embodiment of the present invention, the radius of the arc is one-fifth to three-fifths of the length of the smallest edge of the black matrix opening.
[0046] In certain embodiments, the edges 46 of the black matrix opening 40 are linear except for the corners 45. For example, as shown in FIG. 2A, the black matrix opening 40 has a hexagonal body shape, with the corners 45 being outwardly convex arcs, and each edge 46 being straight. As shown in FIG. 3A, the black matrix opening 40 has a hexagonal body shape, with the corners 45 being inwardly concave arcs, and each edge 46 being straight. For example, as shown in FIG. 2B, the black matrix opening 40 has a rectangular body shape, with the corners 45 being outwardly convex arcs, and each edge 46 being straight. As shown in FIG. 3B, the black matrix opening 40 has a rectangular body shape, with the corners 45 being inwardly concave arcs, and each edge 46 being straight. For example, as shown in FIG. 2C, the black matrix opening 40 has a pentagonal body shape, with the corners 45 being outwardly convex arcs, and each edge 46 being straight. As shown in FIG. 3C, the body shape of the black matrix opening 40 is pentagonal, with corner positions 45 being inwardly concave arcs and each edge 46 being linear.
[0047] In certain embodiments, except for corner locations 45, edges 46 of black matrix opening 40 are arc segments that are convex away from center O of black matrix opening 40, i.e., edges 46 are outwardly convex arc segments. For example, as shown in FIG. 4A , the body shape of black matrix opening 40 is hexagonal, corner locations 45 are outwardly convex arcs, and each edge 46 is an outwardly convex arc segment. As shown in FIG. 4B , the body shape of black matrix opening 40 is hexagonal, corner locations 45 are inwardly concave arcs, and each edge 46 is an outwardly convex arc segment. For example, as shown in FIG. 5A , the body shape of black matrix opening 40 is rectangular, corner locations 45 are outwardly convex arcs, and each edge 46 is an outwardly convex arc segment. As shown in Figure 5B, the body shape of black matrix opening 40 is rectangular, with corner locations 45 being inwardly concave arcs and each edge 46 being an outwardly convex arc segment. For example, as shown in Figure 6A, the body shape of black matrix opening 40 is pentagonal, with corner locations 45 being outwardly convex arcs and each edge 46 being an outwardly convex arc segment. As shown in Figure 6B, the body shape of black matrix opening 40 is pentagonal, with corner locations 45 being inwardly concave arcs and each edge 46 being an outwardly convex arc segment.
[0048] In certain embodiments, except for corner locations 45, edges 46 of black matrix opening 40 are concave arc segments toward the side closer to center O of black matrix opening 40, i.e., edges 46 are inwardly concave arc segments. For example, as shown in FIG. 7A , the body shape of black matrix opening 40 is hexagonal, corner locations 45 are outwardly convex arcs, and each edge 46 is an inwardly concave arc segment. As shown in FIG. 7B , the body shape of black matrix opening 40 is hexagonal, corner locations 45 are inwardly concave arcs, and each edge 46 is an inwardly concave arc segment. For example, as shown in FIG. 8A , the body shape of black matrix opening 40 is rectangular, corner locations 45 are outwardly convex arcs, and each edge 46 is an inwardly concave arc segment. As shown in Figure 8B, the body shape of black matrix opening 40 is rectangular, with corner locations 45 being inwardly concave arcs and each edge 46 being an inwardly concave arc segment. For example, as shown in Figure 9A, the body shape of black matrix opening 40 is pentagonal, with corner locations 45 being outwardly convex arcs and each edge 46 being an inwardly concave arc segment. As shown in Figure 9B, the body shape of black matrix opening 40 is pentagonal, with corner locations 45 being inwardly concave arcs and each edge 46 being an inwardly concave arc segment.
[0049] In certain embodiments, the arcs at corner locations 45 are directly connected to arc segments at edges 46. For example, as shown in FIG. 7B , the body shape of black matrix opening 40 is hexagonal, with corner locations 45 being inwardly concave arcs, and each edge 46 being an inwardly concave arc segment. The arc segments at edges 46 are directly connected to arcs at corner locations 45. For example, as shown in FIG. 8B , the body shape of black matrix opening 40 is rectangular, with corner locations 45 being inwardly concave arcs, and each edge 46 being an inwardly concave arc segment. The arc segments at edges 46 are directly connected to arcs at corner locations 45.
[0050] It should be noted that FIG. 1B is merely a schematic diagram in which the body shape of each black matrix opening is hexagonal, the corner positions 45 are outwardly convex arcs, and the edge portions 46 are straight lines, but this is not limiting. In a specific implementation, the body shapes of the black matrix openings 40 at different positions may be different from each other. The shapes of the corner positions 45 and the edge shapes of the black matrix openings 40 at different positions may be any combination of those shown in FIGS. 2A-2C, 3A-3C, 4A-4B, 5A-5B, 6A-6B, 7A-7B, 8A-8B, and 9A-9B. In addition, in an embodiment of the present invention, the arc at the corner position may not be another arc centered on a corner point, i.e., the center of the circle does not have to be at the corner point, and the present invention is not limited thereto.
[0051] In a specific embodiment, as shown in FIG. 1B , the orthogonal projection of the black matrix opening 40 on the base substrate 1 covers the orthogonal projection of the light-emitting portion 20 on the base substrate 1. That is, because the black matrix opening 40 is larger than the light-emitting portion 20, the influence of the black matrix body 22 on the light output of the light-emitting portion 20 can be avoided. The orthogonal projection of the black matrix opening 40 on the base substrate 1 of the present invention covers the orthogonal projection of the light-emitting portion 20 on the base substrate 1. Based on the black matrix opening 40, corner positions 45 can be designed as outwardly convex or inwardly concave arcs, and edges 46 can be designed as outwardly convex or inwardly concave arc segments. That is, after the black matrix opening 40 in the embodiment of the present invention is improved, the orthogonal projection on the base substrate 1 covers the orthogonal projection of the light-emitting portion 20 on the base substrate 1.
[0052] In certain embodiments, the shape of the light-emitting portion 20 is similar to the body shape of the black matrix opening 40. For example, as shown in FIG. 10A, the body shape of the black matrix opening 40 is hexagonal, and the shape of the corresponding light-emitting portion 20 is also hexagonal. For example, as shown in FIG. 10B, the body shape of the black matrix opening is square, and the shape of the corresponding light-emitting portion is also square. For example, as shown in FIG. 10C, the body shape of the black matrix opening 40 is pentagonal, and the shape of the corresponding light-emitting portion 20 is also pentagonal.
[0053] In a specific embodiment, the center of the black matrix opening 40 overlaps with the center of the light-emitting portion 20. Of course, it is understood that due to limited processing accuracy, it is difficult in actual manufacturing to perfectly align the center of the black matrix opening 40 with the center of the light-emitting portion 20. In an embodiment of the present invention, it is understood that the center of the black matrix opening 40 overlaps with the center of the light-emitting portion 20, and the two centers generally overlap.
[0054] In a specific embodiment, the body shape of the black matrix opening 40 is 2 to 6 micrometers outside the shape of the light-emitting portion 20. For example, as shown in FIG. 10A , the body shape of the black matrix opening 40 is hexagonal, and the shape of the light-emitting portion 20 is also hexagonal. The two shapes are similar and overlap at the center, and the body shape of the black matrix opening 40 corresponds to shifting each boundary of the light-emitting portion 20 outward by a distance h (as shown by the dotted arrows in FIG. 10A ) in a direction perpendicular to the respective boundary, based on the shape of the light-emitting portion 20, where h can be 2 to 6 μm.
[0055] 11A and 11B , a touch layer 8 is provided between the encapsulation layer 3 and the black matrix layer 4. The touch layer 8 includes a first insulating layer 81, a first metal layer 82, a second insulating layer 83, a second metal layer 84, and a third insulating layer 85, which are sequentially arranged on the side of the encapsulation layer 3. The second metal layer 84 includes a plurality of first touch electrodes 841 extending along a first direction AB and a plurality of second touch electrodes 842 extending along a second direction CD. The first touch electrodes 841 and the second touch electrodes 842 are cross-insulated. Each first touch electrode 841 includes a plurality of interconnected first sub-touch electrode blocks 8411. Each second touch electrode 842 includes a plurality of spaced-apart second sub-touch electrode blocks 8421. The first metal layer 82 includes a plurality of bridge electrodes 820. Each of the second sub-touch electrode blocks 8421 in the same second direction CD is electrically connected via a bridge electrode 820.
[0056] In a specific embodiment, as shown in FIG. 12 , the first sub-touch electrode block 8411, the second sub-touch electrode block 8421, and the bridge electrode 820 all have mesh holes (hexagons surrounded by white lines in FIG. 12 ). The orthogonal projection of the mesh on the base substrate 1 covers the orthogonal projection of the light-emitting unit 20 on the base substrate 1. That is, the first sub-touch electrode block 8411, the second sub-touch electrode block 8421, and the bridge electrode 820 may specifically be a structure having multiple meshes formed by metal lines 840. Because pixel precision is relatively high compared to the precision of touch control, it can be seen that the areas of the first sub-touch electrode block 8411 and the second sub-touch electrode block 8421 are much larger than the light-emitting unit 20. Therefore, FIG. 12 shows the corresponding relationship between the first sub-touch electrode block 8411, the second sub-touch electrode block 8421, and the bridge electrode 820 after enlarging them. That is, the overall schematic diagram of the first sub-touch electrode block 8411, the second sub-touch electrode block 8421, and the bridge electrode 820 is shown in FIG. 11B, and after enlargement, the corresponding relationship between the light-emitting unit 20 is shown in FIG. 12. The distance between the first sub-touch electrode block 8411 and the second sub-touch electrode block 8421 on the same layer can be specifically formed by cutting the metal line 840 at the corresponding position.
[0057] In a particular implementation, as shown in FIG. 12, the orthogonal projection of the area of the black matrix layer 4 other than the black matrix opening 40 (i.e., the black matrix body 44) on the base substrate 1 covers the area other than the mesh holes of the first sub-touch electrode block 8411 (i.e., the area where the metal wire 840 is arranged), covers the area other than the mesh holes of the second sub-touch electrode block 8421 (i.e., the area where the metal wire 840 is arranged), and covers the area other than the mesh of the bridge electrode 820 (i.e., the area where the metal wire 840 is arranged).
[0058] 11A , the side of the color filter layer 5 away from the black matrix layer 4 has a protective layer 9. Specifically, the protective layer 9 may be a color filter layer to protect the color resist portions 50 of the color filter layer 5 and the black matrix layer 4. The anode layer 61 may also be disposed between the pixel defining layer 7 and the base substrate 1. The anode layer 61 may specifically include a first-type anode 611 corresponding to the first-type light-emitting portion 21, a second-type anode 612 corresponding to the second-type light-emitting portion 22, and a third-type anode 613 corresponding to the third-type light-emitting portion 23. The cathode layer 62 may also be disposed between the light-emitting layer 2 and the encapsulation layer 3. The cathode layer 62 may specifically have a full-layer structure. A driving layer (not shown) may specifically be disposed between the anode layer 61 and the base substrate 1. The driving layer may specifically include a pixel driving circuit for driving and displaying the display panel. Specifically, the pixel driving circuit may include a plurality of transistors and a plurality of capacitors.
[0059] In certain embodiments, the protective layer 9 has a cover plate (not shown) or a cover film layer (not shown) on the side thereof away from the color filter layer 5. Specifically, the cover plate can be a glass cover plate.
[0060] For the manufacturing method of a display panel provided by an embodiment of the present invention, the following steps can be specifically implemented.
[0061] Step 1: Provide a mask plate corresponding to the black matrix opening pattern of the embodiment of the present invention.
[0062] Step 2: On the side of the base substrate, an anode layer, a pixel defining layer, an emitting layer, a cathode layer, an encapsulation layer, and a touch layer are formed in order.
[0063] Step 3: Coat the side of the touch layer away from the encapsulation layer with a light-blocking film and then coat with a BM film.
[0064] Step 4: The light-shielding film is exposed, developed, and washed to obtain a black matrix layer with black matrix openings.
[0065] Step 5: Form a patterned color filter layer on the side of the black matrix layer away from the touch layer.
[0066] Based on the same inventive idea, the present embodiment further provides a display panel, with reference to Figures 13A to 13C, including a base substrate 1, a pixel defining layer 7, an emissive layer 2, an encapsulation layer 3, a black matrix layer 4, and a color filter layer 5.
[0067] The pixel defining layer 7 is disposed on the side of the base substrate 1 and has a plurality of pixel defining openings 70 .
[0068] The light-emitting layer 2 is disposed on the side of the pixel-defining layer 7 facing away from the base substrate 1 and comprises a plurality of light-emitting portions 20 , the light-emitting portions 20 being in pixel-defining apertures 70 .
[0069] The encapsulation layer 3 is disposed on the side of the light-emitting layer 2 remote from the pixel-defining layer 7 .
[0070] The black matrix layer 4 is disposed on the side of the encapsulation layer 3 away from the light-emitting layer 2, and has black matrix openings 40 in the areas corresponding to the light-emitting portions 20, the shapes of which are circular (as shown in FIG. 13B) or elliptical (as shown in FIG. 13C). The orthogonal projection of the black matrix openings 40 on the base substrate 1 covers the orthogonal projection of the pixel-defining openings 70 on the base substrate 1.
[0071] The color filter layer 5 is disposed on the side of the black matrix layer 4 away from the encapsulation layer 3 and has color resist portions 50 in areas corresponding to the black matrix openings 40 .
[0072] In certain embodiments, as shown in FIGS. 13B and 13C, the center of the black matrix opening 40 overlaps the center of the light-emitting portion 20.
[0073] In an embodiment of the present invention, the shape of the body of the black matrix opening is circular or elliptical, and the orthogonal projection of the black matrix opening on the base substrate covers the orthogonal projection of the pixel-defining opening on the base substrate. Compared with conventional display panels, where the black matrix opening has an acute angle closure at the corner position, the shape of the body of the black matrix opening in an embodiment of the present invention reduces the abrupt size change at the sharp corner, and reduces the diffraction effect of reflected light generated after ambient light passes through the display panel, thereby weakening the phenomenon of color separation.
[0074] Based on the same inventive idea, an embodiment of the present invention further provides a display device including a display panel provided by an embodiment of the present invention, or including a display panel further provided by an embodiment of the present invention.
[0075] The beneficial effects of the embodiments of the present invention are as follows: In the embodiments of the present invention, the body shape of the black matrix opening is polygonal, and the black matrix opening has an arc-shaped curve at least at the corner positions of the polygon, realizing an arc-shaped transition connection between each edge of the polygon. While the black matrix opening of a conventional display panel has an acute angle closure at the corner position, the arc-shaped corner design in the embodiments of the present invention reduces the size change at the sharp corner and reduces the diffraction effect of reflected light generated after ambient light passes through the display panel, thereby weakening the phenomenon of color separation.
[0076] It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the present invention. Therefore, the present invention is also intended to include these modifications and variations, provided that they fall within the scope of the claims of the present invention and their equivalents.
Claims
1. A display panel, the display panel comprises a base substrate, a light-emitting layer, an encapsulation layer, a black matrix layer, and a color filter layer; the light-emitting layer is disposed on the base substrate side and has a plurality of light-emitting portions; the encapsulation layer is disposed on a side of the light-emitting layer remote from the base substrate; the black matrix layer is disposed on a side of the encapsulation layer away from the light emitting layer, and has a black matrix opening in an area corresponding to the light emitting portion, the black matrix opening having a polygonal body shape, and at least at corner positions of the polygon, a circular arc curve for realizing a transition connection between edges of the polygon; a color filter layer disposed on a side of the black matrix layer away from the encapsulation layer, the color filter layer having a color resist portion in an area corresponding to the black matrix opening;
2. 2. The display panel of claim 1, wherein the black matrix opening at the corner is an arc protruding toward a side away from the center of the black matrix opening.
3. 3. The display panel of claim 2, wherein the black matrix opening at the corner is an arc with a corner point as a center of a circle, and the corner point is an intersection of extensions of the adjacent edges.
4. 2. The display panel according to claim 1, wherein the black matrix opening at the corner has an arc shape recessed toward a side closer to the center of the black matrix opening.
5. 5. The display panel of claim 4, wherein the black matrix opening at the corner is an arc with a corner point as a center of a circle, and the corner point is an intersection of extensions of the adjacent edges.
6. the body shape of the black matrix opening is a square, a pentagon, or a hexagon; 6. The display panel according to claim 3, wherein the radius of the arc is one-fifth to three-fifths of the minimum length of the edge of the black matrix opening.
7. 5. The display panel according to claim 2, wherein the edges of the black matrix openings are linear except for the corner positions.
8. 5. The display panel of claim 2, wherein the edges of the black matrix opening, except for the corner positions, are arc segments protruding away from the center of the black matrix opening.
9. 5. The display panel according to claim 2, wherein the edges of the black matrix opening, except for the corner positions, are arc segments recessed toward the side closer to the center of the black matrix opening.
10. The display panel of claim 9, wherein the arcs at the corner locations directly connect to the arc segments of the edges.
11. The display panel according to claim 1 , wherein the orthogonal projection of the black matrix opening on the base substrate covers the orthogonal projection of the light-emitting portion on the base substrate.
12. The display panel of claim 10, wherein the shape of the light emitting portion is similar to the shape of the main body of the black matrix opening.
13. The display panel of claim 12, wherein the center of the black matrix opening overlaps the center of the light emitting portion.
14. 13. The display panel of claim 12, wherein a pixel definition layer is provided between the base substrate and the light-emitting layer, the pixel definition layer has a plurality of pixel definition openings, the light-emitting portions are disposed in the pixel definition openings, and the shape of the light-emitting portions is the same as the shape of the pixel definition openings.
15. 13. The display panel of claim 12, wherein the body shape of the black matrix opening is 2 to 6 micrometers outside the shape of the light emitting portion.
16. 2. The display panel of claim 1, wherein the black matrix layer excluding the black matrix opening is a black matrix body, and the orthogonal projection of the color resist portion on the base substrate covers a portion of the black matrix body around the black matrix opening.
17. a touch layer between the encapsulation layer and the black matrix layer; the touch layer includes a first insulating layer, a first metal layer, a second insulating layer, a second metal layer, and a third insulating layer, which are sequentially arranged on the encapsulation layer side; the second metal layer includes a plurality of first touch electrodes extending along a first direction and a plurality of second touch electrodes extending along a second direction, the first touch electrodes and the second touch electrodes cross an insulation, each of the first touch electrodes includes a plurality of first sub-touch electrode blocks connected to each other, and each of the second touch electrodes includes a plurality of second sub-touch electrode blocks spaced apart from each other; 2. The display panel according to claim 1, wherein the first metal layer includes a plurality of bridge electrodes, and each of the second sub-touch electrode blocks in the same second direction is electrically connected via the bridge electrodes.
18. 18. The display panel of claim 17, wherein the first sub-touch electrode block, the second sub-touch electrode block and the bridge electrode all have mesh holes, and the orthogonal projection of the mesh holes on the base substrate covers the orthogonal projection of the light-emitting portion on the base substrate.
19. 19. The display panel of claim 18, wherein a positive projection of the area of the black matrix excluding the black matrix openings on the base substrate covers the area of the first sub-touch electrode block excluding the mesh holes, covers the area of the second sub-touch electrode block excluding the mesh holes, and covers the area of the bridge electrode excluding the mesh holes.
20. 18. The display panel of claim 17, further comprising a protective layer on the side of the color filter layer remote from the black matrix layer.
21. 21. The display panel of claim 20, further comprising a cover plate or cover film layer on the side of the protective layer away from the color filter layer.
22. A display panel, the display panel comprises a base substrate, a pixel defining layer, a light-emitting layer, an encapsulating layer, a black matrix layer, and a color filter layer; the pixel-defining layer is disposed on the base substrate side and has a plurality of pixel-defining openings; the light-emitting layer is disposed on a side of the pixel-defining layer away from the base substrate, the light-emitting layer having a plurality of light-emitting portions disposed in the pixel-defining apertures; the encapsulation layer is disposed on a side of the light-emitting layer remote from the pixel-defining layer; the black matrix layer is disposed on a side of the encapsulation layer away from the light-emitting layer, and has a black matrix opening in an area corresponding to the light-emitting portion, the shape of the black matrix opening being circular or elliptical, and an orthogonal projection of the black matrix opening on the base substrate covers an orthogonal projection of the pixel-defining opening on the base substrate; a color filter layer disposed on a side of the black matrix layer away from the encapsulation layer, the color filter layer having a color resist portion in an area corresponding to the black matrix opening;
23. 23. The display panel of claim 22, wherein the center of the black matrix opening overlaps the center of the light emitting portion.
24. A display device comprising a display panel according to any one of claims 1 to 21 or a display panel according to claim 22 or claim 23.