Display panel and display device

Abstract

The display panel comprises a light filtering layer, the light filtering layer comprises a plurality of light filtering units in different colors, the sides, away from a driving backboard, of the light filtering units are provided with arc-shaped curved surfaces, in the light filtering units in the same color, the curvature radiuses of the arc-shaped curved surfaces of at least part of the light filtering units are different, and the light filtering units with the different curvature radiuses are distributed randomly. The optical path differences of the reflected light of the ambient light passing through different light filtering units can be different, so that the reflected light passing through the different light filtering units generates a destructive interference effect, and the color separation phenomenon in the visual effect is weakened or eliminated. The invention further provides a display device comprising the display panel.

Description

Technical Field

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

[0002] By forming a color filter layer on the encapsulation layer (COE, Color On Encapsulation), the polarizer is removed, making the display panel thinner and increasing the light transmittance, thereby reducing power consumption.

[0003] The reflected light of the ambient light will diffract at the edge of the light-transmitting opening. Since the wavelengths of light of different colors are different, light of different colors will produce different diffracted light waves. The diffracted light waves of different light-transmitting openings will interfere and enhance to form diffraction apertures of different colors, resulting in color separation in visual effects.

[0004] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present invention, and therefore may include information that does not constitute prior art known to ordinary technicians in this field. Summary of the Invention

[0005] The object of the present invention is to overcome the above-mentioned deficiencies in the prior art and to provide a display panel and a display device.

[0006] According to one aspect of the present invention, a display panel is provided, comprising a driving backplane, a light-shielding layer, and a filter layer. The light-shielding layer is disposed on one side of the driving backplane and is provided with different light-transmitting openings. The filter layer comprises a plurality of filter units of different colors, wherein the orthographic projection of each filter unit on the driving backplane overlaps the orthographic projection of each light-transmitting opening on the driving backplane. The filter units have an arc-shaped surface on a side away from the driving backplane. Among the filter units of the same color, the curvature radii of the arc-shaped surfaces of at least some of the filter units are different, and the filter units with different curvature radii are randomly distributed.

[0007] In one embodiment of the present invention, among the filter units of the same color, at least some of the filter units have arc-shaped surfaces with different heights, and the filter units with different heights are randomly distributed.

[0008] In one embodiment of the present invention, among the light-transmitting openings of the same color, at least some of the light-transmitting openings have different sizes, and the light-transmitting openings of different sizes are randomly distributed.

[0009] In one embodiment of the present invention, the filter units of the same color have the same shape and size, the longest line connecting the edge of the filter unit and its center is a rotation line, the angle between different rotation lines and the first direction is a first angle, and among the same type of filter units, at least some of the filter units have different first angles.

[0010] In one embodiment of the present invention, multiple filter units of different colors are divided into multiple filter unit groups. In the same filter unit group, the first angles of different filter units of the same type are different, and the filter units with different first angles are randomly distributed.

[0011] In one embodiment of the present invention, scattering particles are disposed in the filter unit of at least one color, and the particle size of the scattering particles and / or the distance between adjacent scattering particles is less than or equal to the wavelength of the transmitted light of the corresponding filter unit.

[0012] In one embodiment of the present invention, the particle size of the scattering particles and / or the distance between adjacent scattering particles is smaller than or equal to 1 / 4 to 1 times the wavelength of the transmitted light of the corresponding filter unit.

[0013] In one embodiment of the present invention, the filter units of different colors include a first filter unit, a second filter unit, and a third filter unit. The color of the first filter unit is red, the color of the second filter unit is green, and the color of the first filter unit is blue. The scattering particles include first scattering particles, second scattering particles, and third scattering particles. The first scattering particles are arranged in the first filter unit, the second scattering particles are arranged in the second filter unit, and the third scattering particles are arranged in the third filter unit. The particle size of the first scattering particles is 152-610 nm, the particle size of the second scattering particles is 177-530 nm, and the particle size of the third scattering particles is 116-464 nm.

[0014] In one embodiment of the present invention, the display panel also includes a pixel defining layer, a light-emitting layer and an encapsulation layer. The pixel defining layer is arranged on one side of the driving backplane, and a plurality of pixel openings are provided on the pixel defining layer; the light-emitting layer includes a plurality of light-emitting devices of different colors, and different light-emitting devices are respectively arranged in different pixel openings; the encapsulation layer is arranged on the side of the light-emitting layer away from the driving backplane.

[0015] In one embodiment of the present invention, the display panel also includes a touch layer group, which is arranged on the side of the packaging layer away from the driving backplane, and the touch layer group includes a first touch layer and a second touch layer, the first touch layer is arranged on the side of the packaging layer away from the driving backplane, and the second touch layer is arranged on the side of the first touch layer away from the driving backplane, and one of the first touch layers includes a plurality of first touch electrodes arranged at intervals along a first direction, and a plurality of second touch electrodes arranged at intervals along a second direction, and the first direction intersects with the second direction, and the other layer of the first touch layer or the second touch layer includes a plurality of bridging portions, two adjacent first touch electrodes are connected to each other, and two adjacent second touch electrodes are connected through the bridging portions.

[0016] In one embodiment of the present invention, the shading layer includes a first shading layer, which is arranged on a side of the second touch layer away from the driving backplane, and the first shading layer is provided with a first light-transmitting opening. A plurality of filter units of different colors are arranged in different first light-transmitting openings, and a first shading portion is formed between two adjacent first light-transmitting openings, and the first shading portion wraps the second touch electrode.

[0017] In one embodiment of the present invention, the shading layer includes a first shading layer, the first shading layer is provided with a first light-transmitting opening, and a plurality of filter units of different colors are provided in different first light-transmitting openings. The display panel also includes a first covering layer, the first covering layer covers the filter unit and the side of the first shading layer away from the driving backplane, and fourth scattering particles are provided in the first covering layer.

[0018] In one embodiment of the present invention, the shading layer also includes a second shading layer, which is arranged on the side of the first covering layer away from the driving backplane, and the second shading layer is provided with a second light-transmitting opening, and the orthographic projection of the second light-transmitting opening on the driving backplane overlaps with the orthographic projection of the first light-transmitting opening on the driving backplane.

[0019] In one embodiment of the present invention, the encapsulation layer includes a first inorganic encapsulation layer, the display panel includes a first covering layer, the first covering layer is arranged between the first inorganic encapsulation layer and the touch layer group, the filter layer is arranged between the first inorganic encapsulation layer and the first covering layer, and fourth scattering particles are arranged in the first covering layer.

[0020] In one embodiment of the present invention, the light-shielding layer includes a first light-shielding layer and a second light-shielding layer, the first light-shielding layer is arranged on a side of the first touch layer away from the driving backplane, the first light-shielding layer is provided with a first light-transmitting opening, the second light-shielding layer is arranged on a side of the second touch layer away from the driving backplane, the second light-shielding layer is provided with a second light-transmitting opening, the orthographic projection of the second light-transmitting opening on the driving backplane overlaps with the orthographic projection of the first light-transmitting opening on the driving backplane, a first light-shielding portion is formed between two adjacent first light-transmitting openings, the first light-shielding portion wraps the first touch electrode, and a second light-shielding portion is formed between two adjacent second light-transmitting openings, the second light-shielding portion wraps the second touch electrode.

[0021] In one embodiment of the present invention, the filter layer is arranged on a side of the second touch layer away from the driving backplane, the filter units respectively overlap with two adjacent second touch electrodes, the shading layer includes a first shading layer, the first shading layer is arranged on a side of the filter layer away from the driving backplane, the first shading layer is provided with a first light-transmitting opening, the orthographic projection of each filter unit on the driving backplane covers the orthographic projection of each first light-transmitting opening on the driving backplane, and the display panel further includes a first covering layer, the first covering layer is arranged between the filter layer and the first shading layer, and fourth scattering particles are provided in the first covering layer.

[0022] In one embodiment of the present invention, the light-shielding layer includes a first light-shielding layer, which is arranged on a side of the second touch layer away from the driving backplane, the first light-shielding layer is provided with a first light-transmitting opening, a plurality of filter units of different colors are provided in different first light-transmitting openings, a first light-shielding portion is formed between two adjacent first light-transmitting openings, the first light-shielding portion wraps the second touch electrode, a first covering layer is provided between the first touch layer and the second touch layer, and fourth scattering particles are provided in the first covering layer.

[0023] In one embodiment of the present invention, the particle size of the fourth scattering particles is 116 nm-530 nm.

[0024] According to one aspect of the present invention, a display panel is provided, which includes a driving backplane, a shading layer and a filter layer. The shading layer is arranged on one side of the driving backplane and is provided with different light-transmitting openings. The filter layer includes a plurality of filter units of different colors, the orthographic projection of each filter unit on the driving backplane overlaps the orthographic projection of each light-transmitting opening on the driving backplane, and the filter unit has an arc-shaped surface on a side away from the driving backplane. Among the filter units of the same color, the arch heights of the arc-shaped surfaces of at least some of the filter units are different, and the filter units with different arch heights are randomly distributed.

[0025] According to one aspect of the present invention, a display panel is provided, which includes a driving backplane, a light-shielding layer and a filter layer. The light-shielding layer is arranged on one side of the driving backplane and is provided with different light-transmitting openings. The filter layer includes multiple filter units of different colors, and the orthographic projection of each filter unit on the driving backplane covers the orthographic projection of each light-transmitting opening on the driving backplane. The filter unit has an arc-shaped surface on the side away from the driving backplane. Among the light-transmitting openings of the same color, at least some of the light-transmitting openings have different sizes, and the light-transmitting openings of different sizes are randomly distributed.

[0026] According to another aspect of the present invention, a display device is provided, comprising the display panel provided by one aspect of the present invention.

[0027] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings are incorporated into and constitute a part of this specification, illustrate embodiments consistent with the present invention, and together with the description, serve to explain the principles of the present invention. Obviously, the drawings described below are only some embodiments of the present invention, and it is clear that those skilled in the art can derive other drawings based on these drawings without inventive effort.

[0029] Figure 1A schematic cross-sectional view of a display panel according to an embodiment of the present invention is shown when a color filter layer is provided on the light-emitting side of the light-emitting layer and the side of the filter layer away from the driving backplane is a plane.

[0030] Figure 2 The shape of the orthographic projection of the filter unit on the driving backplane is an ellipse, the angle between the major axis of the ellipse and the first direction is a first angle, and the first rotation angles are randomly distributed, which is a schematic diagram of the planar distribution of the display panel involved in an embodiment of the present invention.

[0031] Figure 3 A schematic cross-sectional view of a display panel according to an embodiment of the present invention is shown when different filter units have different arch heights of arc-shaped surfaces in the filter units of the same color.

[0032] Figure 4 A schematic cross-sectional view of a display panel according to an embodiment of the present invention is provided when different filter units of the same color have the same arch height but different light-transmitting openings.

[0033] Figure 5 for Figure 3 A schematic cross-sectional view of a display panel according to an embodiment of the present invention when scattering particles are disposed in a middle filter unit.

[0034] Figure 6 for Figure 4 A schematic cross-sectional view of a display panel according to an embodiment of the present invention when scattering particles are disposed in a middle filter unit.

[0035] Figure 7 for Figure 5 A schematic cross-sectional view of a display panel according to an embodiment of the present invention when fourth scattering particles are provided in the first covering layer.

[0036] Figure 8 for Figure 6 A schematic cross-sectional view of a display panel according to an embodiment of the present invention when fourth scattering particles are provided in the first covering layer.

[0037] Figure 9 A schematic cross-sectional view of a display panel according to an embodiment of the present invention is shown when the first light shielding portion wraps the second touch electrode and a plurality of filter units of different colors are respectively disposed in different first light-transmitting openings.

[0038] Figure 10 1 is a schematic cross-sectional view of a display panel according to an embodiment of the present invention when the filter unit overlaps with two adjacent second touch electrodes respectively.

[0039] Figure 11 This is a cross-sectional schematic diagram of a display panel according to an embodiment of the present invention when the first cover layer is disposed between the first touch layer and the second touch layer and fourth scattering particles are disposed in the first cover layer.

[0040] Figure 12 This is a partial cross-sectional schematic diagram of a display panel according to an embodiment of the present invention when the second light-shielding layer is disposed on a side of the first covering layer away from the driving backplane and the second covering layer covers the first light-shielding layer and a side of the first covering layer away from the driving backplane.

[0041] Figure 13 It is a cross-sectional schematic diagram of a display panel according to an embodiment of the present invention when the filter layer is disposed between the first inorganic encapsulation layer and the first covering layer.

[0042] Description of reference numerals:

[0043] 1-driving backplane, 2-pixel defining layer, 21-pixel opening, 3-light-emitting layer, 31-light-emitting device, 311-first light-emitting device, 312-second light-emitting device, 313-third light-emitting device, 4-encapsulation layer, 41-first inorganic encapsulation layer, 42-organic encapsulation layer, 43-second inorganic encapsulation layer, 5-touch layer group, 51-first touch layer, 511-first touch electrode, 52-second touch layer, 521-second touch electrode, 53-first touch insulation layer, 6-light shielding layer, 60-light-transmitting opening, 601-first sub-light-transmitting opening, 60 2-second sub-light-transmitting opening, 603-third sub-light-transmitting opening, 61-first light-shielding layer, 611-first light-transmitting opening, 612-first light-shielding portion, 62-second light-shielding layer, 621-second light-transmitting opening, 622-second light-shielding portion, 7-filter layer, 71-filter unit, 711-first filter unit, 712-second filter unit, 713-third filter unit, 72-first scattering particles, 73-second scattering particles, 74-third scattering particles, 8-first covering layer, 81-fourth scattering particles, 9-second covering layer, 10-third covering layer. DETAILED DESCRIPTION

[0044] Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the concepts of the example embodiments to those skilled in the art. Like reference numerals in the figures represent identical or similar structures, and thus their detailed description will be omitted. Furthermore, the figures are merely schematic illustrations of the present invention and are not necessarily drawn to scale.

[0045] Although relative terms such as "upper" and "lower" are used in this specification to describe the relationship of one illustrated component to another, these terms are used herein for convenience only, such as in accordance with the orientation of the illustrations in the accompanying drawings. It will be understood that if the illustrated device were flipped upside down, the component described as "upper" would become the component "lower." When a structure is referred to as "on" another structure, this may mean that the structure is integrally formed with the other structure, that the structure is "directly" disposed on the other structure, or that the structure is "indirectly" disposed on the other structure via the other structure.

[0046] The terms "a", "an", "the", "said" and "at least one" are used to indicate the presence of one or more elements / components / etc.; the terms "including" and "having" are used to express open-ended inclusion and mean that additional elements / components / etc. may exist in addition to the listed elements / components / etc.; the terms "first", "second" and "third" etc. are used only as labels and are not intended to limit the quantity of their objects.

[0047] The FMLOC (Flexible Multi-Layer On Cell) design is currently mainstream in the OLED touch display field. The FMLOC design involves fabricating a metal electrode layer on the encapsulation layer 4 of the display substrate. The surface of the metal electrode layer significantly reflects ambient light. To improve the contrast of the display panel and reduce reflected light, a polarizer is typically placed on the light-emitting side of the light-emitting layer 3 to make the display appear black when not illuminated. However, the polarizer causes the display panel's light intensity to attenuate and results in a thicker display panel.

[0048] like Figure 1 As shown, in order to reduce the thickness of the display panel and improve the light output gain, a color filter layer is provided on the light output side of the light-emitting layer 3 instead of the polarizer. The color filter layer can be provided on the side of the touch layer away from the driving backplane 1. The color filter layer includes a shading layer 6 and a filter layer 7. Most of the ambient light is absorbed by the shading layer 6, and there is no light intensity attenuation in the light output area of the light-emitting layer 3. The output light is directly emitted from the filter layer 7, thereby improving the light output gain of the display panel.

[0049] The light-shielding layer 6 includes a first light-shielding layer 61, which is provided with a first light-transmitting opening 611. However, reflected ambient light diffracts at the edges of the first light-transmitting opening 611. Due to the different wavelengths of light of different colors, different diffracted light waves are generated. The diffracted light waves from different first light-transmitting openings 611 interfere and amplify to form diffraction circles of different colors, resulting in the visual appearance of color separation. When light of the same color diffracts at the edges of the first light-transmitting opening 611, multiple diffraction circles are formed, gradually expanding outward, with relatively clear boundaries between the diffraction circles.

[0050] Based on this, an embodiment of the present invention provides a display panel. Figures 2 to 13 As shown, the display panel includes a driving backplane 1, a light-shielding layer 6 and a filter layer 7. The light-shielding layer 6 is provided on one side of the driving backplane 1 and is provided with different light-transmitting openings. The filter layer 7 includes a plurality of filter units 71 of different colors. The orthographic projection of each filter unit 71 on the driving backplane 1 covers the orthographic projection of each light-transmitting opening on the driving backplane 1. The filter unit 71 has an arc-shaped surface on the side away from the driving backplane 1. Among the filter units 71 of the same color, the curvature radius of the arc-shaped surface of at least some of the filter units 71 is different, and the filter units 71 with different curvature radii are randomly distributed.

[0051] The display panel includes a filter layer 7, which includes multiple filter units 71 of different colors. The filter unit 71 has an arc-shaped surface on the side away from the driving backplane 1. Among the filter units 71 of the same color, the curvature radius of the arc-shaped surface of at least some of the filter units 71 is different. The filter units 71 with different curvature radii are randomly distributed, which can cause the reflected light of the ambient light to have different optical path differences when passing through different filter units 71, so that the reflected light passing through different filter units 71 produces an interference destructive effect, thereby reducing or eliminating the color separation phenomenon in the visual effect.

[0052] The display panel according to the embodiment of the present invention will be described in detail below with reference to specific embodiments.

[0053] like Figures 2 to 13 As shown, the display panel generally includes a driving backplane 1, a pixel defining layer 2, and a light-emitting layer 3. The pixel defining layer 2 is disposed on one side of the driving backplane 1. The pixel defining layer 2 includes a plurality of pixel openings 21, and the light-emitting layer 3 includes a plurality of light-emitting devices 31, each of which is disposed in a different pixel opening 21.

[0054] In addition, the display panel of the present invention may further include an encapsulation layer 4, which is arranged on the side of the light-emitting layer 3 away from the driving backplane 1, thereby encapsulating the light-emitting layer 3 to prevent water and oxygen corrosion. The encapsulation layer 4 can be a single-layer or multi-layer structure, and the material of the encapsulation layer 4 can include organic or inorganic materials, which are not specifically limited here. In this embodiment, the encapsulation layer 4 can include a first inorganic encapsulation layer 41, an organic encapsulation layer 42, and a second inorganic encapsulation layer 43. The first inorganic encapsulation layer 41 is arranged on the side of the light-emitting layer 3 away from the driving backplane 1, the organic encapsulation layer 42 is arranged on the side of the first inorganic encapsulation layer 41 away from the driving backplane 1, and the second inorganic encapsulation layer 43 is arranged on the side of the organic encapsulation layer 42 away from the driving backplane 1.

[0055] The display panel also includes a touch layer, which can be a mutual capacitance touch control layer. The touch layer includes a first touch layer 51 and a second touch layer 52. The first touch layer 51 is a metal mesh layer (MM), and the second touch layer 52 is a bridge metal layer (BM). The metal mesh is located in the display area and can be divided into a touch drive (Tx) metal mesh and a touch sensing (Rx) metal mesh in the horizontal and vertical directions. One of the touch sensing (Rx) metal mesh and the touch drive (Tx) metal mesh is connected to each other, and the other is connected via a bridge metal layer.

[0056] The first touch layer 51 is disposed on a side of the driver backplane 1 away from the encapsulation layer 4, and the second touch layer 52 is disposed between the first touch layer 51 and the encapsulation layer 4. The touch layer may further include a first touch insulation layer 53, disposed between the first touch layer 51 and the second touch layer 52. The first touch layer 51 may include a plurality of first touch electrodes 511 arranged along a first direction and a plurality of second touch electrodes 521 arranged along a second direction. The plurality of first touch electrodes 511 are spaced apart, and the plurality of second touch electrodes 521 are spaced apart. The second touch layer 52 may include a plurality of bridges, with two adjacent first touch electrodes 511 interconnected, and two adjacent second touch electrodes 521 connected via the bridges. The orthographic projection of the first touch electrode 511 on the driver backplane 1 is located between the orthographic projections of two adjacent light-emitting devices 31 on the driver backplane 1.

[0057] The display panel may further include a light shielding layer 6, a filter layer 7, and a first cover layer 8. The light shielding layer 6 includes a first light shielding layer 61, which is disposed on the side of the second touch layer 52 away from the driver backplane 1. The first light shielding layer 61 has first light-transmitting openings 611, with first light-shielding portions 612 formed between two adjacent first light-transmitting openings 611. The first light-shielding portions 612 enclose the second touch electrodes 521. The filter layer 7 includes multiple filter units 71 of different colors, each of which is disposed within a different first light-transmitting opening 611. The first cover layer 8 is disposed on the side of the filter layer 7 away from the driver backplane 1.

[0058] like Figure 2 As shown, the light-emitting devices 31 include m×n groups of light-emitting devices 31, each including a first light-emitting device 311, a second light-emitting device 312, and a third light-emitting device 313. The m groups of light-emitting devices 31 extend along the first direction and are arranged along the second direction, while the n groups of light-emitting devices 31 extend along the second direction and are arranged along the first direction. The light-emitting devices 31 in the same m group are divided into three rows, namely, the first light-emitting device 311, the second light-emitting device 312, and the third light-emitting device 313. The third light-emitting device 313 is located between the first light-emitting device 311 and the second light-emitting device 312 along the first direction. The n groups of light-emitting devices 31 extend along the second direction and are arranged along the first direction. The light-emitting devices 31 in the same n group are divided into two columns. One column of light-emitting devices 31 includes the first light-emitting devices 311 and the second light-emitting devices 312 arranged alternately, while the other column includes the third light-emitting device 313. The third light-emitting device 313 is located between the first light-emitting device 311 and the second light-emitting device 312 along the second direction.

[0059] It should be noted that the first direction is Figure 2 The x direction is shown in the figure, and the second direction is Figure 2 The y direction is shown in FIG.

[0060] In other embodiments, the first light-emitting device 311, the second light-emitting device 312, and the third light-emitting device 313 may also adopt an RGB arrangement: pixels of the three colors of red, green, and blue are arranged horizontally, and each pixel is composed of a red, a green, and a blue bright spot. This is the most common pixel arrangement. The first light-emitting device 311, the second light-emitting device 312, and the third light-emitting device 313 may also adopt a Pentile arrangement: this arrangement is a sub-pixel arrangement that uses sub-pixels of the three colors of red, green, and blue, but adjacent pixels share the green sub-pixel. The first light-emitting device 311, the second light-emitting device 312, and the third light-emitting device 313 may also adopt a diamond arrangement, in which each pixel still uses RG or BG, so the ratio of the number of RGB pixels is the same as that of the Pentile. The pixel arranges BG and GR in a diamond shape, so it is called a diamond arrangement.

[0061] The light-transmitting openings 60 include m×n groups of light-transmitting openings 60, and the arrangement pattern of the light-transmitting openings 60 is the same as that of the light-emitting device 31. The light-transmitting openings 60 include a first sub-light-transmitting opening 601, a second sub-light-transmitting opening 602, and a third sub-light-transmitting opening 603. The filter unit 71 includes m×n groups of filter units 71, and the arrangement pattern of the filter units 71 is the same as that of the light-emitting device 31. The filter unit 71 includes a first filter unit 711, a second filter unit 712, and a third filter unit 713. The first filter unit 711 is disposed within the first sub-light-transmitting opening 601, the first filter unit 711 is disposed within the second sub-light-transmitting opening 602, and the third filter unit 713 is disposed within the third sub-light-transmitting opening 603.

[0062] The orthographic projection of the first filter unit 711 on the driver backplane 1 covers the orthographic projection of the first light-emitting device 311 on the driver backplane 1, the orthographic projection of the second filter unit 712 on the driver backplane 1 covers the orthographic projection of the second light-emitting device 312 on the driver backplane 1, and the orthographic projection of the third filter unit 713 on the driver backplane 1 covers the orthographic projection of the third light-emitting device 313 on the driver backplane 1. The colors of the first light-emitting device 311 and the first filter unit 711 are red, the colors of the second light-emitting device 312 and the second filter unit 712 are green, and the colors of the third light-emitting device 313 and the third filter unit 713 are blue.

[0063] like Figure 3 As shown, the filter unit 71 has a curved surface on the side facing away from the driver backplane 1. Within the filter units 71 of the same color, at least some of the filter units 71 have different heights of their curved surfaces, and the filter units 71 with different heights are randomly distributed. Taking the first filter unit 711 as an example, the curved surfaces of the first filter unit 711 have different heights. The curved surfaces of the second and third filter units 712 and 713 can also have different heights. The height d of two adjacent filter units 71 of the same color satisfies the following: d2 = d1 + t. The height of the filter unit 71 with the smaller height is d1, and the height of the filter unit 1935 with the larger height is d2. The height interval between two adjacent filter units 71 of the same color is t. When the filter layer 7 comprises 4×4 groups of filter units 71, the height d of the filter units 71 of the same color can be set according to the rules in Table 1.

[0064] Table 1 When the filter layer 7 is provided with 4×4 groups of filter units 71, the arrangement rules of the arch height d of the filter units 71 of the same color

[0065]

[0066] For any two adjacent filter units 71 of the same color, if d1 is 1 μm, d2 is 1.5 μm, and therefore t is 0.5 μm. Within the same m groups of light-emitting units, any two filter units 71 of the same color have different heights, and filter units 71 of the same color with different heights are randomly distributed. Within the same n groups of light-emitting units, any two filter units 71 of the same color have different heights, and filter units 71 of the same color with different heights are randomly distributed.

[0067] like Figure 4 As shown, within the filter units 71 of the same color, different filter units 71 can have the same arch height, but at least some of their light-transmitting openings have different sizes. The light-transmitting openings of different sizes are randomly distributed. In the same m groups of light-emitting units, any two light-transmitting openings have different sizes, and in the same n groups of light-emitting units, any two light-transmitting openings have different sizes. Taking circular light-transmitting openings as an example, in the same m groups of light-emitting units, any two filter units 71 of the same color have different diameters, and in the same n groups of light-emitting units, any two filter units 71 of the same color have different diameters.

[0068] By distinguishing the arch heights and filter opening sizes of different filter units 71 within the same color, the curvature radius of the curved surface of each filter unit 71 can be differentiated. When the arch heights and / or filter opening sizes of different filter units 71 differ, the curvature radius of the curved surface of each filter unit 71 can be varied. Randomly distributing filter units 71 with different curvature radii can result in different optical path length differences for reflected ambient light passing through different filter units 71. This results in destructive interference between the reflected light rays passing through different filter units 71, resulting in the superposition of bright and dark fringes and reducing or eliminating visual color separation.

[0069] The orthographic projection of the filter unit 71 on the driver backplane 1 is shaped like an ellipse or an inverted ellipse. The filter units 71 of the same color have the same shape and size, and at least one filter unit 71 is rotated at different first angles relative to the first direction. By controlling the rotation of different filter units 71 at different first angles, the optical path difference of the reflected ambient light passing through the different filter units 71 can also be adjusted. In this case, within the filter units 71 of the same color, the diffracted light waves of different filter units 71 will interfere with each other, resulting in a lighter diffraction aperture and a blurred boundary between adjacent diffraction apertures, thereby improving color separation. It should be noted that the shape of the inverted ellipse is a figure with a missing portion of a circle, and the edge of the inverted ellipse is an arc.

[0070] like Figure 2As shown, the ellipse eccentricity can be set between 0 and 0.95, and the angle between the major axis of the ellipse and the first direction is a first angle θ. Since the ellipse is an axisymmetric figure, the trajectory of the filter unit 71 after rotation within 0-180° and the trajectory of the filter unit 71 after rotation within 180°-360° overlap. Therefore, the first angle θ can be randomly set within 180°. The first angle θ of the first overlapping openings 1931 in the same m groups of light-transmitting openings 1920 is different, and the first angle θ of the first overlapping openings 1931 in the same n groups of light-transmitting openings 1920 is different.

[0071] The first angle θ of two angularly adjacent filter units 71 satisfies the following: θ2 = θ1 + a. The first angle of the filter unit 71 with the smaller angle is θ1, and the first angle of the filter unit 71 with the larger angle is θ2, where 0 < θ1 < θ2 ≤ 360°. The first angle interval between two angularly adjacent filter units 71 is a, where 0 < S ≤ 360°. In the m×n groups of light-emitting devices 31, filter units 71 with different first angles are randomly distributed. The filter layer 195 includes 4×4 groups of filter units 71. When the orthographic projection of the filter units 71 on the driver backplane 1 is an ellipse, the first angle θ can be set according to the rules in Table 2.

[0072] Table 2 The filter layer 195 is provided with 4×4 groups of filter units 71. When the orthographic projection of the filter unit 71 on the driving backplane 1 is an ellipse, the setting rule of the first angle θ

[0073]

[0074] Take any two filter units 71 with adjacent angles, for example, the first angle θ1 of the filter unit 71 in the 2nd row and the 2nd column is 11.25°, and the first angle θ2 of the filter unit 71 in the 4th row and the 3rd column is 22.5°, so a is 11.25°.

[0075] The filter layer 195 is provided with 4×4 groups of filter units 71 . When the orthographic projection of the filter unit 71 on the driving back plate 1 is an ellipse, the first angle θ can also be set according to the rule in Table 3.

[0076] Table 3 The filter layer 195 is provided with 4×4 groups of filter units 71. When the orthographic projection of the filter unit 71 on the driving backplane 1 is an ellipse, the setting rule of the first angle θ

[0077]

[0078] When the shape of the orthographic projection of the filter unit 71 on the driving backplane 1 is a non-axisymmetric figure, the trajectory of the filter unit 71 after rotation within 0-180° and the trajectory of the filter unit 71 after rotation within 180°-360° do not overlap with each other, so the first angle θ needs to be randomly set within 360°.

[0079] The filter layer 195 is provided with 4×4 groups of filter units 71. When the orthographic projection of the filter unit 71 on the driving back plate 1 is a non-axisymmetric shape, the first angle θ can be set according to the rules in Table 4.

[0080] Table 4 The filter layer 195 is provided with 4×4 groups of filter units 71. When the orthographic projection of the filter unit 71 on the driving backplane 1 is a non-axisymmetric shape, the setting rule of the first angle θ

[0081]

[0082] The filter layer 195 is provided with 4×4 groups of filter units 71. When the orthographic projection of the filter unit 71 on the driving backplane 1 is a non-axisymmetric shape, the first angle θ can also be set according to the rules in Table 5.

[0083] Table 5 The filter layer 195 is provided with 4×4 groups of filter units 71. When the orthographic projection of the filter unit 71 on the driving backplane 1 is a non-axisymmetric figure, the setting rule of the first angle θ

[0084]

[0085] like Figure 5 and Figure 6 As shown, scattering particles are provided within at least one color filter unit 71. For example, scattering particles can be provided within the second filter unit 712, and of course, scattering particles can also be provided within the first filter unit 711 and the third filter unit 713. The provision of scattering particles within the filter unit 71 having a curved surface has a positive effect on diffraction, improving the angular dependence of the emitted light. The curved filter unit 71 can converge reflected ambient light. The scattering particles can scatter incident light without affecting the transmittance of the filter unit 71, thus breaking up the concentrated diffraction aperture.

[0086] The particle size of the scattering particles and the distance between two adjacent scattering particles are limited, and scattering particles of different sizes have different effects on the light extraction efficiency. If the particle size of the scattering particles is much larger than the wavelength of the light wave, the light wave will be reflected or refracted on the surface of the particles without being significantly scattered. In this case, the effect of the scattering particles on the light wave can be ignored. When the particle size of the particles is close to or smaller than the wavelength of the light wave, the scattering effect becomes significant. The particle size of the scattering particles and / or the distance between adjacent scattering particles is less than or equal to the wavelength of the transmitted light of the corresponding filter unit 71. The particle size of the scattering particles and / or the distance between adjacent scattering particles is less than or equal to 1 / 4 to 1 times the wavelength of the transmitted light of the corresponding filter unit 71.

[0087] like Figures 7 to 9 As shown, the scattering particles may include first scattering particles 72, second scattering particles 73, and third scattering particles 74. The first scattering particles 72 are disposed within the first filter unit 711, the second scattering particles 73 are disposed within the second filter unit 712, and the third scattering particles 74 are disposed within the third filter unit 713. The particle size of the first scattering particles 72 is 152-610 nm, the particle size of the second scattering particles 73 is 177-530 nm, and the particle size of the third scattering particles 74 is 116-464 nm. Fourth scattering particles 81 are disposed within the first covering layer 8, and the particle size of the fourth scattering particles 81 is 116-530 nm.

[0088] The thickness of the filter layer 7 can be 3 μm. When the wavelength of red light is 610 nm, the particle size of the first scattering particles 72 can be 68.89% of the red light wavelength. When the wavelength of green light is 530 nm, the particle size of the second scattering particles 73 can be 60.48% of the red light wavelength. When the wavelength of blue light is 464 nm, the particle size of the third scattering particles 74 can be 60.49% of the red light wavelength. The thickness of the filter layer 7 can be 4 μm. When the wavelength of red light is 610 nm, the particle size of the first scattering particles 72 can be 59.36% of the red light wavelength. When the wavelength of green light is 530 nm, the particle size of the second scattering particles 73 can be 52.55% of the red light wavelength. When the wavelength of blue light is 464 nm, the particle size of the third scattering particles 74 can be 64.33% of the red light wavelength.

[0089] In one embodiment, the first scattering particles 72 may be disposed only in the first filter unit 711, the second scattering particles 73 may be disposed in the second filter unit 712, and the fourth scattering particles 81 may be disposed in the first cover layer 8. The particle size of the first scattering particles 72 is 152 nm to 610 nm, the particle size of the second scattering particles 73 is 177 nm to 530 nm, and the particle size of the fourth scattering particles 81 is 116 nm to 530 nm. In one embodiment, the first scattering particles 72 may be disposed only in the first filter unit 711, and the fourth scattering particles 81 may be disposed in the first cover layer 8. The particle size of the first scattering particles 72 is 152 nm to 610 nm, and the particle size of the fourth scattering particles 81 is 152 nm to 630 nm.

[0090] In one embodiment, the second scattering particles 73 may be disposed only within the second filter unit 712, and the fourth scattering particles 81 may be disposed within the first cover layer 8. The particle size of the second scattering particles 73 is between 117 nm and 530 nm, and the particle size of the fourth scattering particles 81 is between 117 nm and 530 nm. In one embodiment, the third scattering particles 74 may be disposed only within the third filter unit 713, and the fourth scattering particles 81 may be disposed within the first cover layer 8. The particle size of the third scattering particles 74 is between 116 nm and 464 nm, and the particle size of the fourth scattering particles 81 is between 116 nm and 464 nm. In one embodiment, the particle sizes of the first scattering particles 72, the second scattering particles 73, the third scattering particles 74, and the fourth scattering particles 81 may all be between 116 nm and 464 nm.

[0091] like Figure 10 As shown, the filter layer 7 is disposed on the side of the second touch layer 52 away from the driving backplane 1. The filter units 71 overlap with two adjacent second touch electrodes 521. The light shielding layer 6 includes a first light shielding layer 61, which is disposed on the side of the filter layer 7 away from the driving backplane 1. The first light shielding layer 61 has first light-transmitting openings 611. The orthographic projection of each filter unit 71 on the driving backplane 1 overlaps the orthographic projection of each first light-transmitting opening 611 on the driving backplane 1. The display panel also includes a first cover layer 8, which is disposed between the filter layer 7 and the first light shielding layer 61. The display panel may also include a second cover layer 9, which covers the first cover layer 8 and the side of the first light shielding layer 61 away from the driving backplane 1. In this embodiment, peeling between the light shielding layer 6 and the second touch electrodes 521 can be avoided.

[0092] like Figure 11As shown, a first cover layer 8 can also be disposed between the first touch layer 51 and the second touch layer 52, with fourth scattering particles 81 disposed within the first cover layer 8. A first light shielding layer 61 is disposed on the side of the second touch layer 52 away from the driver backplane 1. The first light shielding layer 61 has first light-transmitting openings 611, with first light-shielding portions 612 formed between two adjacent first light-transmitting openings 611. The first light-shielding portions 612 enclose the second touch electrodes 521, and multiple filter units 71 of different colors are disposed within different first light-transmitting openings 611. The display panel also includes a second cover layer 9, which covers the side of the first light shielding layer 61 and the filter units 71 away from the driver backplane 1. In this embodiment, the first cover layer 8 can function as the first touch insulating layer 53, thereby reducing the thickness of the display panel.

[0093] like Figure 12 As shown, in order to prevent the display panel from leaking light at a large viewing angle, the contrast of the display panel is improved to ensure the quality of the displayed image. Figure 9 On the basis of the first cover layer 8, the light shielding layer 6 further includes a second light shielding layer 62, which is provided on a side of the first cover layer 8 away from the driving backplane 1. The second light shielding layer 62 is provided with a second light-transmitting opening 621, and the orthographic projection of the second light-transmitting opening 621 on the driving backplane 1 overlaps with the orthographic projection of the first light-transmitting opening 611 on the driving backplane 1. The display panel further includes a second cover layer 9, which covers the first light shielding layer 61 and the side of the first cover layer 8 away from the driving backplane 1.

[0094] like Figure 13 As shown, the encapsulation layer 4 includes a first inorganic encapsulation layer 41, the display panel includes a first covering layer 8, the first covering layer 8 is arranged between the first inorganic encapsulation layer 41 and the first touch layer 51, the filter layer 7 is arranged between the first inorganic encapsulation layer 41 and the first covering layer 8, and fourth scattering particles 81 are provided in the first covering layer 8.

[0095] The light-shielding layer 6 includes a first light-shielding layer 61 and a second light-shielding layer 62. The first light-shielding layer 61 is arranged on the side of the first touch layer 51 away from the driving backplane 1. The first light-shielding layer 61 is provided with a first light-transmitting opening 611. The second light-shielding layer 62 is arranged on the side of the second touch layer 52 away from the driving backplane 1. The second light-shielding layer 62 is provided with a second light-transmitting opening 621. The orthographic projection of the second light-transmitting opening 621 on the driving backplane 1 overlaps with the orthographic projection of the first opening on the driving backplane 1. A first light-shielding portion 612 is formed between two adjacent first light-transmitting openings 611. The first light-shielding portion 612 wraps the first touch electrode 511. A second light-shielding portion 622 is formed between two adjacent second light-transmitting openings 621. The second light-shielding portion 622 wraps the second touch electrode 521.

[0096] The display panel further includes a second cover layer 9 and a third cover layer 10. The second cover layer 9 is disposed on a side of the first light shielding layer 61 away from the driving backplane 1, and the third cover layer 10 is disposed on a side of the second light shielding layer 62 away from the driving backplane 1. In this embodiment, the first cover layer 8 can function as the organic encapsulation layer 42, thereby reducing the thickness of the display panel.

[0097] It should be noted that the refractive index of the first covering layer 8 may be 1.540, the refractive index of the first filter unit may be 1.721, the refractive index of the second filter unit may be 1.644, and the refractive index of the third filter unit may be 1510.

[0098] The embodiment of the present invention further provides a display device, which may include the display panel of any one of the above embodiments of the present invention. The specific structure and beneficial effects of the display panel have been described in detail above, so they will not be repeated here.

[0099] It should be noted that, in addition to the display panel, the display device also includes other necessary components and components, such as a housing, a circuit board, a power cord, etc. Those skilled in the art can make corresponding supplements based on the specific usage requirements of the display device, which will not be repeated here.

[0100] The display device can also be an emerging wearable device, such as a virtual reality device and an augmented reality device, or a traditional electronic device, such as a mobile phone, a computer, a television, and a camcorder. We will not list them all here.

[0101] Other embodiments of the present invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention herein. This application is intended to cover any variations, uses, or adaptations of the present invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered as exemplary only, with the true scope and spirit of the invention being indicated by the appended claims.

Claims

1. A display panel, characterized in that: include: Driver backplane; A light shielding layer is provided on one side of the driving back plate, and the light shielding layer is provided with different light-transmitting openings; The filter layer includes a plurality of filter units of different colors, wherein the orthographic projection of each filter unit on the driving backplane covers the orthographic projection of each light-transmitting opening on the driving backplane, and the filter unit has an arc-shaped surface on a side away from the driving backplane. Among the filter units of the same color, the curvature radius of the arc-shaped surface of at least some of the filter units is different, and the filter units with different curvature radii are randomly distributed.

2. The display panel according to claim 1, wherein: Among the filter units of the same color, at least some of the filter units have different arch heights of the arc-shaped surfaces, and the filter units with different arch heights are randomly distributed.

3. The display panel according to claim 1, wherein: Among the light-transmitting openings of the same color, at least some of the light-transmitting openings have different sizes, and the light-transmitting openings of different sizes are randomly distributed.

4. The display panel according to claim 1, wherein: The filter units of the same color have the same shape and size, the longest line between the edge of the filter unit and its center is a rotation line, the angle between the different rotation lines and the first direction is a first angle, and among the same filter units, at least some of the filter units have different first angles.

5. The display panel according to claim 4, wherein: The plurality of filter units of different colors are divided into a plurality of filter unit groups. In the same filter unit group, the first angles of different filter units of the same type are different from each other, and the filter units with different first angles are randomly distributed.

6. The display panel according to claim 1, wherein: Scattering particles are provided in the filter unit of at least one color, and the particle size of the scattering particles and / or the distance between adjacent scattering particles is less than or equal to the wavelength of the transmitted light of the corresponding filter unit.

7. The display panel according to claim 6, wherein: The particle size of the scattering particles and / or the distance between adjacent scattering particles is smaller than or equal to 1 / 4 to 1 times the wavelength of the transmitted light of the corresponding filter unit.

8. The display panel according to claim 7, wherein: The filter units of different colors include a first filter unit, a second filter unit and a third filter unit. The color of the first filter unit is red, the color of the second filter unit is green, and the color of the first filter unit is blue. The scattering particles include first scattering particles, second scattering particles and third scattering particles. The first scattering particles are arranged in the first filter unit, the second scattering particles are arranged in the second filter unit, and the third scattering particles are arranged in the third filter unit. The particle size of the first scattering particles is 152-610nm, the particle size of the second scattering particles is 177-530nm, and the particle size of the third scattering particles is 116-464nm.

9. The display panel according to claim 6, wherein: The display panel further includes: A pixel defining layer is provided on one side of the driving backplane, and a plurality of pixel openings are provided on the pixel defining layer; a light-emitting layer comprising a plurality of light-emitting devices of different colors, wherein different light-emitting devices are respectively disposed in different pixel openings; The encapsulation layer is arranged on a side of the light-emitting layer away from the driving backplane.

10. The display panel according to claim 9, wherein: The display panel also includes a touch layer group, which is arranged on a side of the packaging layer away from the driving backplane. The touch layer group includes a first touch layer and a second touch layer. The first touch layer is arranged on a side of the packaging layer away from the driving backplane, and the second touch layer is arranged on a side of the first touch layer away from the driving backplane. One of the first touch layer or the second touch layer includes a plurality of first touch electrodes arranged at intervals along a first direction, and a plurality of second touch electrodes arranged at intervals along a second direction. The first direction intersects with the second direction. The other of the first touch layer or the second touch layer includes a plurality of bridging portions. Two adjacent first touch electrodes are connected to each other, and two adjacent second touch electrodes are connected through the bridging portions.

11. The display panel according to claim 10, wherein: The shading layer includes a first shading layer, which is arranged on a side of the second touch layer away from the driving backplane. The first shading layer is provided with a first light-transmitting opening. Multiple filter units of different colors are arranged in different first light-transmitting openings. A first shading portion is formed between two adjacent first light-transmitting openings, and the first shading portion wraps the second touch electrode.

12. The display panel according to claim 1, wherein The shading layer includes a first shading layer, the first shading layer is provided with a first light-transmitting opening, and multiple filter units of different colors are arranged in different first light-transmitting openings. The display panel also includes a first covering layer, the first covering layer covers the filter unit and the side of the first shading layer away from the driving backplane, and fourth scattering particles are provided in the first covering layer.

13. The display panel according to claim 12, wherein: The shading layer also includes a second shading layer, which is arranged on the side of the first covering layer away from the driving backplane. The second shading layer is provided with a second light-transmitting opening, and the orthographic projection of the second light-transmitting opening on the driving backplane overlaps with the orthographic projection of the first light-transmitting opening on the driving backplane.

14. The display panel according to claim 10, wherein: The encapsulation layer includes a first inorganic encapsulation layer, the display panel includes a first covering layer, the first covering layer is arranged between the first inorganic encapsulation layer and the touch layer group, the filter layer is arranged between the first inorganic encapsulation layer and the first covering layer, and fourth scattering particles are arranged in the first covering layer.

15. The display panel according to claim 14, wherein: The light-shielding layer includes a first light-shielding layer and a second light-shielding layer, the first light-shielding layer is arranged on a side of the first touch layer away from the driving backplane, the first light-shielding layer is provided with a first light-transmitting opening, the second light-shielding layer is arranged on a side of the second touch layer away from the driving backplane, the second light-shielding layer is provided with a second light-transmitting opening, the orthographic projection of the second light-transmitting opening on the driving backplane overlaps with the orthographic projection of the first light-transmitting opening on the driving backplane, a first light-shielding portion is formed between two adjacent first light-transmitting openings, the first light-shielding portion wraps the first touch electrode, a second light-shielding portion is formed between two adjacent second light-transmitting openings, the second light-shielding portion wraps the second touch electrode.

16. The display panel according to claim 10, wherein: The filter layer is arranged on a side of the second touch layer away from the driving backplane, the filter units overlap with two adjacent second touch electrodes respectively, the shading layer includes a first shading layer, the first shading layer is arranged on a side of the filter layer away from the driving backplane, the first shading layer is provided with a first light-transmitting opening, the orthographic projection of each of the filter units on the driving backplane covers the orthographic projection of each of the first light-transmitting openings on the driving backplane, the display panel also includes a first covering layer, the first covering layer is arranged between the filter layer and the first shading layer, and fourth scattering particles are provided in the first covering layer.

17. The display panel according to claim 10, wherein: The light-shielding layer includes a first light-shielding layer, which is arranged on a side of the second touch layer away from the driving backplane. The first light-shielding layer is provided with a first light-transmitting opening. The multiple filter units of different colors are arranged in different first light-transmitting openings. A first light-shielding portion is formed between two adjacent first light-transmitting openings. The first light-shielding portion wraps the second touch electrode. A first covering layer is provided between the first touch layer and the second touch layer, and fourth scattering particles are provided in the first covering layer.

18. The display panel according to any one of claims 12 to 17, characterized in that: The particle size of the fourth scattering particles is 116nm-530nm.

19. A display panel, characterized in that: include: Driver backplane; A light shielding layer is provided on one side of the driving back plate, and the light shielding layer is provided with different light-transmitting openings; The filter layer includes multiple filter units of different colors, the orthographic projection of each filter unit on the driving backplane covers the orthographic projection of each light-transmitting opening on the driving backplane, the filter unit has an arc-shaped surface on the side away from the driving backplane, and among the filter units of the same color, at least some of the filter units have different arch heights of the arc-shaped surface, and the filter units with different arch heights are randomly distributed.

20. A display panel, characterized in that: include: Driver backplane; A light shielding layer is provided on one side of the driving back plate, and the light shielding layer is provided with different light-transmitting openings; The filter layer includes multiple filter units of different colors, the orthographic projection of each filter unit on the driving backplane covers the orthographic projection of each light-transmitting opening on the driving backplane, the filter unit has an arc-shaped surface on the side away from the driving backplane, among the light-transmitting openings of the same color, at least some of the light-transmitting openings are of different sizes, and the light-transmitting openings of different sizes are randomly distributed.

21. A display device, characterized in that: The display panel comprises the display panel according to any one of claims 1 to 20.

Images