Anti-reflection assembly, display panel and display device

Abstract

The invention provides an anti-reflection assembly, a display panel and a display device, and the anti-reflection assembly comprises a cover plate which comprises a straight cover plate part and a plurality of curved cover plate parts, the curved cover plate parts are located at the edge of the straight cover plate part and are integrally formed with the straight cover plate part, and the surfaces of the curved cover plate parts comprise curved surfaces; the shading part is positioned on at least one side surface of the curved cover plate part; the anti-reflection film is arranged on the first side surface of the cover plate and covers the surfaces of the straight cover plate part and the curved cover plate part; the anti-reflection assembly comprises an in-plane area and a shading area, the in-plane area comprises a straight cover plate part, and the shading area comprises a shading piece and a part of curved cover plate part; the value of b of reflected light of the anti-reflection assembly in the shading area in the Lab color space is larger than-6 and smaller than 0; and / or, the numerical value of a of reflected light of the anti-reflection assembly in the shading area in the Lab color space is larger than-2 and smaller than 2. The embodiment of the invention provides an anti-reflection assembly so as to achieve the effect of improving the integrated black effect of a screen body.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display, in particular to an anti-reflection assembly, a display panel and a display device. BACKGROUND

[0002] Organic Light-Emitting Diode (OLED) display panel has been widely applied due to its high brightness, low power consumption, fast response and low driving voltage.

[0003] In the prior art, a display panel generally comprises a display substrate and a cover plate arranged on the display substrate, and the cover plate serves to protect the display substrate. The cover plate generally comprises a visible area corresponding to a display area of the display substrate and an ink area corresponding to a frame area of the display substrate, and the ink area is printed with an ink layer, which can serve to shield light and prevent edge light leakage; an Optically Clear Adhesive (OCA) is generally used to bond the cover plate and the display substrate, and at the same time, the OCA adhesive can serve to fill the gap between the ink layer and the cover plate due to the gap therebetween.

[0004] The screen body integrated black effect of the ink area and the display area is poor. SUMMARY

[0005] The present application provides an anti-reflection assembly, a display panel and a display device to improve the screen body integrated black effect.

[0006] In a first aspect, an anti-reflection assembly is provided, comprising:

[0007] a cover plate comprising a straight cover plate portion and a plurality of curved cover plate portions, the curved cover plate portions being located at edges of the straight cover plate portion and integrally formed with the straight cover plate portion, and a surface of the curved cover plate portion comprising a curved surface;

[0008] a light shielding member located on at least one side surface of the curved cover plate portion;

[0009] an anti-reflection film arranged on a first side surface of the cover plate and covering the surface of the straight cover plate portion and the curved cover plate portions;

[0010] The anti-reflection assembly comprises an in-plane area and a light shielding area, the in-plane area comprising the straight cover plate portion, and the light shielding area comprising the light shielding member and part of the curved cover plate portions; the reflected light of the anti-reflection assembly in the light shielding area has a value of b in the Lab color space greater than -6 and less than 0; and / or the reflected light of the anti-reflection assembly in the light shielding area has a value of a in the Lab color space greater than -2 and less than 2.

[0011] In a second aspect, an embodiment of the present invention provides a display panel, including:

[0012] substrate;

[0013] A plurality of light-emitting elements are disposed on one side of the substrate;

[0014] As described in the first aspect, the anti-reflection component is located on a side of the light-emitting element away from the substrate, and the anti-reflection film is located on a side of the cover plate away from the substrate.

[0015] In a third aspect, an embodiment of the present invention provides a display device comprising the display panel described in the second aspect.

[0016] The anti-reflection component provided by the embodiment of the present invention can be applied to a display panel to set an anti-reflection film in the display panel to which the anti-reflection component is applied. The anti-reflection film is used to change the hue of the in-plane area and / or the shading area. It is understandable that due to process fluctuations, there will always be changes such as the thickness of the refractive index material layer, and it is impossible to achieve an ideal color-free state. The human eye is relatively insensitive to blue, and therefore, the embodiment of the present invention sets the b value of the reflected light of the anti-reflection component in the shading area to a negative value. Specifically, the b value of the reflected light of the anti-reflection component in the shading area is greater than -6 and less than 0, and the a value is greater than -2 and less than 2. Reduce the hue difference between the in-plane area and the shading area in the display panel, and reduce the chromaticity difference between the in-plane area and the shading area in the display panel. Improve the integrated black effect of the screen body. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic top view of an anti-reflection assembly provided in an embodiment of the present invention;

[0018] Figure 2 For the Figure 1 Schematic diagram of the cross-sectional structure in the AA' direction;

[0019] Figure 3 A schematic diagram of the film structure of an anti-reflection film provided in an embodiment of the present invention;

[0020] Figure 4 A schematic diagram of the film structure of another anti-reflection film provided in an embodiment of the present invention;

[0021] Figure 5 A schematic cross-sectional view of another anti-reflection component provided by an embodiment of the present invention;

[0022] Figure 6 A schematic cross-sectional view of a cover plate provided in an embodiment of the present invention;

[0023] Figure 7 Δa is the angle of curvature of the arc edge at different angles * The change curve diagram of

[0024] Figure 8 Δb is the value of different arc edge curvature angles * The change curve diagram of

[0025] Figure 9 A schematic diagram of the film structure of another anti-reflection film provided in an embodiment of the present invention;

[0026] Figure 10 A schematic cross-sectional structure diagram of a display panel provided by an embodiment of the present invention;

[0027] Figure 11 A schematic cross-sectional structure diagram of a display panel provided by an embodiment of the present invention;

[0028] Figure 12 A schematic diagram of a display device is provided according to an embodiment of the present invention. DETAILED DESCRIPTION

[0029] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It will be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all structures.

[0030] In related technologies, the hue of the ink area differs significantly from that of the display area, resulting in a significant difference in chromaticity between the ink area and the display area. The chromaticity difference is related to the difference in hue and also to the difference in brightness. Hue is represented by a and b values ​​in the Lab color space. Brightness is represented by L values ​​in the Lab color space. The a value represents red and green colors. A positive a value indicates a red bias, while a negative a value indicates a green bias. The b value represents yellow and blue colors. A positive b value indicates a yellow bias, while a negative b value indicates a blue bias.

[0031] Figure 1 A schematic top view of an anti-reflection assembly according to an embodiment of the present invention is shown. Figure 2 For the Figure 1 Schematic diagram of the cross-section structure in the AA' direction, refer to Figure 1 and Figure 2The anti-reflection assembly includes a cover plate 110, a light shielding member 120, and an anti-reflection film 130. The cover plate 110 includes a straight cover plate portion 111 and a plurality of curved cover plate portions 112. The curved cover plate portions 112 are located at the edges of the straight cover plate portion 111 and are located on the periphery of the straight cover plate portion 111. The curved cover plate portions 112 are integrally formed with the straight cover plate portion 111. The curved cover plate portions 112 and the straight cover plate portion 111 are different parts of the cover plate 110. The surface of the curved cover plate portion 112 includes a curved surface with a certain curvature. The curved cover plate portion 112 bends around the intersection of the curved cover plate portion 112 and the straight cover plate portion 111, and the bending direction is the direction of the curved cover plate portion 112 away from the anti-reflection film 130. The light shielding member 120 is located on at least one side surface of the curved cover portion 112. The light shielding member 120 blocks light, preventing light from passing through the light shielding member 120 and reaching the other side of the light shielding member 120. An anti-reflection film 130 is disposed on a first side surface of the cover plate 110. The anti-reflection film 130 covers the surfaces of the straight cover plate portion 111 and the curved cover plate portion 112. The portion of the anti-reflection film 130 covering the straight cover plate portion 111 comprises a flat surface, while the portion of the anti-reflection film 130 covering the curved cover plate portion 112 comprises a curved surface.

[0032] exist Figure 2 In order to clearly illustrate the light shielding member 120, a gap is shown between the straight cover portion 111 and the anti-reflection film 130. In reality, there is no gap between the straight cover portion 111 and the anti-reflection film 130. The anti-reflection film 130 covers the surfaces of the straight cover portion 111 and the curved cover portion 112.

[0033] The anti-reflection component includes an in-plane area 201 and a shading area 202, the in-plane area 201 includes a straight cover portion 111, and the shading area 202 includes a shading member 120 and a portion of a curved cover portion 112; the reflected light of the anti-reflection component in the shading area 202 has a value of b greater than -6 and less than 0 in the Lab color space; and / or the reflected light of the anti-reflection component in the shading area 202 has a value of a greater than -2 and less than 2 in the Lab color space.

[0034] In the related art, only the cover plate 110 is provided in the display panel, and the anti-reflection film 130 is not provided. The anti-reflection assembly provided by the embodiment of the present application can be applied to the display panel, so as to provide the anti-reflection film 130 in the display panel to which the anti-reflection assembly is applied. The hue of the in-plane area 201 and / or the light shielding area 202 is changed by using the anti-reflection film 130. It can be understood that due to process fluctuation, there is always a change such as film layer thickness, and ideal color deviation cannot be achieved. However, the human eye is relatively insensitive to blue, and thus the b value of the reflected light of the anti-reflection assembly in the light shielding area 202 is negative. Specifically, the b value of the reflected light of the anti-reflection assembly in the light shielding area 202 is greater than -6 and less than 0, and the a value is greater than -2 and less than 2. The color difference between the in-plane area 201 and the light shielding area 202 in the display panel is reduced, and the chroma difference between the in-plane area 201 and the light shielding area 202 in the display panel is reduced. The screen body integrated black effect is improved.

[0035] It should be noted that the light shielding piece 120 in the light shielding area 202 is not transparent to light. The elements below the light shielding piece 120 in the display panel are not visible, and do not affect the hue of the light shielding area 202. Thus, the hue of the anti-reflection assembly in the light shielding area 202 before the anti-reflection assembly is integrated into the display panel is the same as the hue of the display panel in the light shielding area 202 after the anti-reflection assembly is integrated into the display panel. The in-plane area 201 is not provided with the light shielding piece 120, and the hue of the anti-reflection assembly in the in-plane area 201 before the anti-reflection assembly is integrated into the display panel is different from the hue of the display panel in the in-plane area 201 after the anti-reflection assembly is integrated into the display panel.

[0036] Further, the reflected light of the anti-reflection assembly in the light shielding area 202 has a b value in the Lab color space, which is greater than -4 and less than 0. The reflected light of the anti-reflection assembly in the light shielding area 202 has an a value in the Lab color space, which is greater than -1 and less than 1.5. In this embodiment, the a value and the b value are limited to a smaller range, so as to further improve the hue of the anti-reflection assembly in the light shielding area 202, and improve the hue of the display panel in the light shielding area 202. In addition, the color difference between the in-plane area 201 and the light shielding area 202 in the display panel is further reduced.

[0037] Figure 3 A film layer structure diagram of an anti-reflection film provided by the embodiment of the present application is shown in FIG. 1. The anti-reflection film 130 is provided on the cover plate 110. The cover plate 110 is provided on the display panel 100. The display panel 100 is provided on the light source 200. Figure 3The anti-reflection film 130 includes a plurality of high-refractive index material layers 20 and low-refractive index material layers 10 that are alternately and stacked, and the refractive index of the high-refractive index material layer 20 is greater than the refractive index of the low-refractive index material layer 10; the plurality of high-refractive index material layers 20 include a first high-refractive index material layer 21, a second high-refractive index material layer 22, a third high-refractive index material layer 23, a fourth high-refractive index material layer 24 and a fifth high-refractive index material layer 25 that are sequentially arranged toward the cover plate 110; the plurality of low-refractive index material layers 10 include a first low-refractive index material layer 11, a second low-refractive index material layer 12, a third low-refractive index material layer 13, a fourth low-refractive index material layer 14 and a fifth low-refractive index material layer 15 that are sequentially arranged toward the cover plate 110.

[0038] The anti-reflection film 130 comprises a plurality of alternating high-refractive index material layers 20 and low-refractive index material layers 10, with a low-refractive index material layer 10 disposed between two adjacent high-refractive index material layers 20, and a high-refractive index material layer 20 disposed between two adjacent low-refractive index material layers 10. Unlike related art methods that employ high- and low-refractive index material layers to alter the reflectivity of a flat panel display device, the present embodiment applies the anti-reflection film 130 above the cover plate 110 having the curved cover plate portion 112. In other words, the anti-reflection film 130 is applied to a curved screen, at least to alter the hue and reduce the difference in hue between the in-plane region 201 and the light-shielding region 202 of the display panel.

[0039] Another important point is that the thickness of the anti-reflection film in a flat-panel display device is consistent at all locations. For curved screens, when the anti-reflection film 130 is formed using a coating device, the thickness of the same high-refractive index material layer 20 or the same low-refractive index material layer 10 in the anti-reflection film 130 varies in the in-plane region 201 and the light-shielding region 202. Furthermore, the curvature of the curved cover plate portion 112 within the light-shielding region 202 varies, resulting in the same high-refractive index material layer 20 or the same low-refractive index material layer 10 having different thicknesses at different locations within the light-shielding region 202. Thus, the anti-reflection film 130 used in curved screens features a unique design with respect to the number, thickness, material, and arrangement of the refractive index material layers.

[0040] Optionally, refer to Figure 3The thickness L1 of the first low refractive index material layer 11 satisfies: 90nm≤L1≤110nm; the thickness H1 of the first high refractive index material layer 21 satisfies: 35nm≤H1≤45nm; the thickness L2 of the second low refractive index material layer 12 satisfies: 5nm≤L2≤15nm; the thickness L3 of the third low refractive index material layer 13 satisfies: 18nm≤L3≤28nm; the thickness H3 of the third high refractive index material layer 23 satisfies: 30nm≤H3≤40nm; the thickness L4 of the fourth low refractive index material layer 14 satisfies: 45nm≤L4≤55nm; and the thickness H5 of the fifth high refractive index material layer 25 satisfies: 3nm≤H5≤8nm. The thickness range setting of the above-mentioned refractive index material layer is a parameter design obtained based on experience. Under this parameter design, it can be achieved that the value of b of the reflected light of the anti-reflection component in the shading area 202 in the Lab color space is greater than -6 and less than 0; and / or, the value of a of the reflected light of the anti-reflection component in the shading area 202 in the Lab color space is greater than -2 and less than 2.

[0041] Optionally, refer to Figure 3 The thickness H2 of the second high refractive index material layer 22 satisfies: 90nm≤H2≤100nm; the thickness H4 of the fourth high refractive index material layer 24 satisfies: 10nm≤H4≤20nm; the thickness L5 of the fifth low refractive index material layer 15 satisfies: 55nm≤L5≤65nm.

[0042] Optionally, refer to Figure 3 , the thickness L1 of the first low-refractive-index material layer satisfies: 100nm≤L1≤110nm. Based on the above embodiment, this embodiment preferably adjusts the thickness L1 of the first low-refractive-index material layer so that the range of L1 is smaller. After the anti-reflection component is applied to the display panel, the hue difference between the in-plane area 201 and the light-shielding area 202 in the display panel is reduced. And the hue of the in-plane area 201 and the light-shielding area 202 in the display panel is both blue, and the b value is negative. When the hue is blue, it is less noticeable to the human eye than when it is green or red.

[0043] Optionally, refer to Figure 3 , the thickness L2 of the second low-refractive-index material layer 12 satisfies: 10nm≤L2≤15nm. Based on the above embodiment, this embodiment preferably uses a second low-refractive-index material layer 12, so that the range of L2 is smaller. After the anti-reflection component is applied to the display panel, the hue difference between the in-plane area 201 and the light-shielding area 202 in the display panel is reduced. And the hue of the in-plane area 201 and the light-shielding area 202 in the display panel is both blue, and the b value is negative. When the hue is blue, it is less noticeable to the human eye than when it is green or red.

[0044] Optionally, refer to Figure 3The first high refractive index material layer 21 is located between the first low refractive index material layer 11 and the cover plate 110. The refractive index material layer on the side closest to the external space is the first low refractive index material layer 11. The first low refractive index material layer 11 is in contact with the air or the protective film layer, reducing the reflectivity when the anti-reflection component or the display panel is illuminated from the external space.

[0045] Figure 4 A schematic diagram of the film structure of another anti-reflection film provided in an embodiment of the present invention is provided. Figure 4 The low-refractive-index material layer 10 further includes a sixth low-refractive-index material layer 16, which is located between the fifth high-refractive-index material layer 25 and the cover plate 110. The sixth low-refractive-index material layer 16 serves to mechanically increase the adhesion between the anti-reflection film 130 and the cover plate 110, thereby preventing the anti-reflection film 130 from separating from the cover plate 110, or preventing partial tearing and warping of the anti-reflection film 130.

[0046] Optionally, the high refractive index material layer 20 comprises silicon nitride, and the low refractive index material layer 10 comprises silicon dioxide. In other embodiments, the high refractive index material layer 20 comprises other materials, such as niobium pentoxide or titanium dioxide; and the low refractive index material layer 10 comprises other materials, such as magnesium fluoride.

[0047] Optionally, refer to Figure 3 The light shielding member 120 is located on a surface of a first side of the cover plate 110 , and the light shielding member 120 and the anti-reflection film 130 are located on the same side of the cover plate 110 .

[0048] Figure 5 A schematic cross-sectional view of another anti-reflection component provided by an embodiment of the present invention, referring to Figure 5 The light shielding member 120 includes ink, and the ink is located on the second side surface of the cover plate 110, which is opposite to the first side surface. The ink and the anti-reflection film 130 are located on opposite sides of the cover plate 110. On the one hand, the ink will not affect the anti-reflection film 130 formed on the first side surface of the cover plate 110, and will not introduce foreign matter into the formation position of the anti-reflection film 130 during the deposition process of the anti-reflection film 130. Instead, the deposition process is completed directly on the surface of the smooth first side of the cover plate 110. This improves the film forming performance, and since no foreign matter is introduced into the formation position of the anti-reflection film 130, no step difference is introduced into a certain position of the anti-reflection film 130, thereby improving the optical performance of the anti-reflection film 130. On the other hand, the ink is located on the second side surface of the cover plate 110, and the ink is located below the cover plate 110 away from the external space. The cover plate 110 can provide protection for the ink and prevent the ink from being worn.

[0049] Figure 6 A schematic cross-sectional view of a cover plate according to an embodiment of the present invention is provided. Figure 2 and Figure 6 , the surface of the curved cover plate portion 112 includes a curved surface 1121. The curved surface 1121 is located at the first side of the cover plate 110. The surface of the curved cover plate portion 112 can also include other curved surfaces located at the second side of the cover plate 110. The curved surface 1121 has a tangent line Q1 at the end away from the straight cover plate portion 111, and the tangent line Q1 has an included angle θ with the plane where the straight cover plate portion 111 is located, and the included angle θ is greater than or equal to 40° and less than or equal to 55°. If the included angle θ is too small, the effect of reducing the hue difference between the in-plane area 201 and the light shielding area 202 in the display panel is not good, and the specification for application to products cannot be met. If the included angle θ is too large, the requirements for the film material forming the cover plate 110 are too high, and the larger the included angle θ, the higher the process difficulty for the cover plate 110 of a specific film material. In the embodiment of the present application, the included angle θ is greater than or equal to 40° and less than or equal to 55°, which not only improves the effect of reducing the hue difference between the in-plane area 201 and the light shielding area 202 in the display panel, but also reduces the requirements for the film material forming the cover plate 110.

[0050] When depositing the high-refractive-index material layer 20 and the low-refractive-index material layer 10 to form the anti-reflection film 130, the film is formed in an integral layer, and different film layer thicknesses are not artificially controllable in the in-plane area 201 and the light shielding area 202. The different film layer thicknesses are derived from the included angle θ of the light shielding area 202, i.e., the different film layer thicknesses are not artificially controllable.

[0051] Figure 7 Fig. 2 is a variation curve diagram of Δa * under different arc edge curvature angles, Figure 8 Fig. 3 is a variation curve diagram of Δb * under different arc edge curvature angles, for reference Figure 7 and Figure 8 The arc edge curvature angle refers to the included angle θ, Δa * refers to the difference between the a values of the anti-reflection assembly in the light shielding area 202 and the in-plane area 201. Δb * refers to the difference between the b values of the anti-reflection assembly in the light shielding area 202 and the in-plane area 201. It can be seen that the change of the arc edge curvature angle will affect the values of Δa * and Δb * , and thus the setting mode that the included angle θ is greater than or equal to 40° and less than or equal to 55° is also related to Δa * and Δb * , and affects the hue difference between the in-plane area 201 and the light shielding area 202 in the display panel after the anti-reflection assembly is applied to the display panel.

[0052] In the scenario of being applied to the curved screen, the design of the anti-reflection film 130 is mainly used to affect the difference of hue, and is mainly used to adapt and improve the hue. The anti-reflection film 130 not only has an influence on the hue, but also has an influence on the reflectivity. When the anti-reflection film 130 changes the thickness of the refractive index material layer and other factors, both the hue and the reflectivity are changed synchronously.

[0053] In the related art, only the cover plate 110 is arranged in the display panel, and the anti-reflection film 130 is not arranged. The reflectivity of the display panel without the anti-reflection film 130 in the in-plane area 201 is 5.6% to 6.5%, and the reflectivity in the light shielding area 202 is 4.6%. The reflectivity difference between the in-plane area 201 and the light shielding area 202 is 1% to 1.9%, and the reflectivity difference is large, which also causes a large color difference between the in-plane area 201 and the light shielding area 202.

[0054] Optionally, referring to Figure 2 , the reflectivity of the anti-reflection assembly in the in-plane area 201 is less than the reflectivity of the anti-reflection assembly in the light shielding area 202. By arranging the anti-reflection film 130 to reduce the hue difference between the in-plane area 201 and the light shielding area 202, the increase of the reflectivity of the in-plane area 201 compared with the light shielding area 202 in the related art is also considered to be compensated by the arrangement of the anti-reflection film 130, so as to reduce the reflectivity difference between the in-plane area 201 and the light shielding area 202 of the display panel containing the anti-reflection assembly, and to reduce the color difference between the in-plane area 201 and the light shielding area 202.

[0055] Optionally, the reflectivity of the anti-reflection assembly in the in-plane area 201 has a reflectivity difference ΔR with the reflectivity of the anti-reflection assembly in the light shielding area 202, and the reflectivity difference ΔR is greater than or equal to 1% and less than or equal to 1.5%.

[0056] Exemplarily, after the anti-reflection film 130 is arranged, the reflectivity of the display panel in the in-plane area 201 is 2.5% to 3.4%, which is lower than that before the anti-reflection film 130 is arranged. After the anti-reflection film 130 is arranged, the reflectivity of the display panel in the light shielding area 202 is 1.3%, which is lower than that before the anti-reflection film 130 is arranged. After the anti-reflection film 130 is arranged, if the reflectivity difference ΔR of the anti-reflection assembly is equal to 1%, the reflectivity difference between the in-plane area 201 and the light shielding area 202 of the display panel applying the anti-reflection assembly is 0.2% to 1.1%. Similarly, after the anti-reflection film 130 is arranged, if the reflectivity difference ΔR of the anti-reflection assembly is equal to 1.5%, the reflectivity difference between the in-plane area 201 and the light shielding area 202 of the display panel applying the anti-reflection assembly is -0.3% to 0.6%. The reflectivity difference between the in-plane area 201 and the light shielding area 202 of the display panel is reduced.

[0057] Figure 9 A schematic diagram of the film structure of another anti-reflection film provided in an embodiment of the present invention is provided. Figure 9 The anti-reflection assembly further includes a support layer 140, which is disposed on the surface of the anti-reflection film 130 away from the cover plate 110. The support layer 140 has a relatively high hardness and can provide support for the anti-reflection film 130. Furthermore, the support layer 140 can also serve as a protective layer for the anti-reflection film 130, preventing the anti-reflection film 130 from being damaged.

[0058] For example, refer to Figure 1 and Figure 2 As the curvature of the curved cover plate portion 112 increases away from the straight cover plate portion 111, the curvature and degree of curvature of the curved cover plate portion 112 become increasingly larger. The curvature of the curved cover plate portion 112 is gradual. The anti-reflection component also includes an intermediate region 203. The intermediate region 203 is located between the in-plane region 201 and the light-shielding region 202. In a display panel without an anti-reflection film 130, the hue difference between the light-shielding region 202 and the in-plane region 201 is greater than the hue difference between the intermediate region 203 and the in-plane region 201, and the reflectivity difference between the light-shielding region 202 and the in-plane region 201 is greater than the reflectivity difference between the intermediate region 203 and the in-plane region 201. Therefore, by providing an anti-reflection component, the hue difference and reflectivity difference between the light-shielding region 202 and the in-plane region 201 are reduced, and the hue and reflectivity difference of the intermediate region 203 in the intermediate state can be simultaneously improved, thereby reducing the hue difference and reflectivity difference between the intermediate region 203 and the in-plane region 201.

[0059] Figure 10 A schematic cross-sectional view of a display panel according to an embodiment of the present invention is provided. Figures 1-10 The display panel includes a substrate 221, a plurality of light-emitting elements 223, and the anti-reflection component 100 provided in the above embodiment. The plurality of light-emitting elements 223 are arranged on one side of the substrate 221, and the light-emitting elements 223 may include organic light-emitting elements or inorganic light-emitting elements. The organic light-emitting elements may be, for example, organic light-emitting diodes, and the inorganic light-emitting elements may be, for example, inorganic light-emitting diodes, specifically mini-LEDs or micro-LEDs. The light-emitting elements 223 may also include liquid crystals or quantum dots. The anti-reflection component 100 is located on the side of the light-emitting elements 223 away from the substrate 221, and the anti-reflection film 130 is located on the side of the cover plate 110 away from the substrate 221.

[0060] The display panel includes the anti-reflection assembly 100 provided in the above embodiment, which reduces the hue difference between the in-plane area 201 and the light-shielding area 202 in the display panel, and reduces the chromaticity difference between the in-plane area 201 and the light-shielding area 202 in the display panel, thereby improving the integrated black effect of the screen body.

[0061] Figure 11A schematic cross-sectional view of a display panel according to an embodiment of the present invention is provided. Figures 1-11 The display panel also includes a touch function layer 225 and a color filter layer CF. The touch function layer 225 can realize the touch function by means of self-capacitance or mutual capacitance. Typically, the touch function layer 225 may include multiple touch electrodes. The color filter layer CF includes multiple color resists 226. The multiple color resists 226 may include red color resists, green color resists and blue color resists. The red color resist is used to transmit red light, the green color resist is used to transmit green light, and the blue color resist is used to transmit blue light, thereby realizing color display of the display panel. In the direction perpendicular to the plane where the substrate 221 is located, the touch function layer 225 is located between the light-emitting element 223 and the color resist 226, and the color filter layer CF is located between the touch function layer 225 and the cover plate 110.

[0062] An embodiment of the present invention provides a CFOT display panel, wherein CFOT refers to a color filter layer (CF) formed above the touch function layer 225. Compared to POL display panels, CFOT display panels have improved transmittance and increased reflectivity in the in-plane region 201. This leads to significant differences in hue and reflectivity between the in-plane region 201 and the light-shielding region 202, resulting in significant chromaticity differences. The anti-reflection component provided by the embodiment of the present invention is urgently needed to address this significant chromaticity difference.

[0063] For example, refer to Figure 11 The display panel also includes a driving circuit layer 222, a thin film encapsulation layer 224, a black matrix BM, an organic layer 227, and an optical adhesive 228. The driving circuit layer 222 is located between the substrate 221 and the light-emitting element 223, and is used to drive the light-emitting element 223 to emit light for display. The thin film encapsulation layer 224 is located on the side of the light-emitting element 223 away from the substrate 221, covering the light-emitting element 223, and is used to prevent water vapor and oxygen from damaging the light-emitting element 223 and / or the wiring and thin film transistors in the driving circuit layer 222. The color resist 226 is located in the grid-shaped opening of the black matrix BM. The organic layer 227 covers the color filter layer CF to achieve a flattening effect. The optical adhesive 228 is used to attach and bond the anti-reflection component 100 to the substrate 221 provided with the light-emitting element 223. Specifically, the optical adhesive 228 is used to attach and bond the cover plate 110 and the organic layer 227.

[0064] Optionally, the hue of the anti-reflection component in the light-shielding area 202 before the anti-reflection component is integrated into the display panel is the same as the hue of the display panel in the light-shielding area 202 after the anti-reflection component is integrated into the display panel. The value of b of the reflected light of the anti-reflection component in the light-shielding area 202 in the Lab color space is greater than -6 and less than 0; and / or, the value of a of the reflected light of the anti-reflection component in the light-shielding area 202 in the Lab color space is greater than -2 and less than 2. That is to say, after the anti-reflection component is integrated into the display panel, the value of b of the reflected light of the display panel in the light-shielding area 202 in the Lab color space is greater than -6 and less than 0; and / or, the value of a of the reflected light of the anti-reflection component in the light-shielding area 202 in the Lab color space is greater than -2 and less than 2. Therefore, in this embodiment of the present invention, the value of b in the Lab color space for the reflected light from the display panel in the in-plane area 201 is set to be greater than -6 and less than 0; and / or the value of a in the Lab color space for the reflected light from the display panel in the in-plane area 201 is set to be greater than -2 and less than 2. This reduces the hue difference and chromaticity difference between the in-plane area 201 and the light-shielded area 202 of the display panel, thereby improving the integrated black effect of the screen.

[0065] Exemplarily, the chromaticity difference ΔE satisfies:

[0066]

[0067] Where L1 and L2 represent the brightness of the two areas, which is proportional to the reflectivity. a1 and a2 represent the a values ​​of the two areas, and b1 and b2 represent the b values ​​of the two areas.

[0068] In one embodiment, the chromaticity difference between the in-plane area 201 and the light-shielding area 202 of the display panel is less than 2.

[0069] Exemplarily, the difference between the reflectivity of the display panel in the in-plane area 201 and the reflectivity of the light-shielding area 202 is less than or equal to 1.1%.

[0070] Figure 12 A schematic diagram of a display device is provided in accordance with an embodiment of the present invention. Figure 12 , the display device includes the display panel in the above embodiment. The display device provided by the embodiment of the present invention can be Figure 12 The mobile phone shown can also be any electronic product with a display function, including but not limited to the following categories: televisions, laptops, desktop monitors, electronic paper display devices, tablet computers, digital cameras, smart bracelets, smart glasses, car displays, industrial control equipment, medical display screens, touch interactive terminals, etc. The embodiments of the present invention do not specifically limit this.

[0071] Note that the above merely describes preferred embodiments of the present application and the principles of the technology applied. Those skilled in the art will understand that the present application is not limited to the specific embodiments described herein, and that various obvious changes, modifications, combinations and substitutions can be made by those skilled in the art without departing from the scope of the present application. Therefore, although the present application has been described in detail through the above embodiments, the present application is not limited to the above embodiments, and can include more other equivalent embodiments without departing from the concept of the present application, and the scope of the present application is determined by the scope of the claims.

Claims

1. An anti-reflection component, characterized in that: include: a cover plate comprising a straight cover plate portion and a plurality of curved cover plate portions, wherein the curved cover plate portions are located at edges of the straight cover plate portion and are integrally formed with the straight cover plate portion, and surfaces of the curved cover plate portions include curved surfaces; a light shielding member located on at least one side surface of the curved cover portion; an anti-reflection film, disposed on the first side surface of the cover plate, covering the surfaces of the straight cover plate portion and the curved cover plate portion; The anti-reflection component includes an in-plane area and a shading area, the in-plane area includes the straight cover portion, and the shading area includes the shading member and part of the curved cover portion; the value of b of the reflected light of the anti-reflection component in the shading area is greater than -6 and less than 0 in the Lab color space; and / or the value of a of the reflected light of the anti-reflection component in the shading area is greater than -2 and less than 2 in the Lab color space.

2. The anti-reflection assembly according to claim 1, characterized in that The anti-reflection film comprises a plurality of alternating and stacked high-refractive index material layers and low-refractive index material layers, wherein the refractive index of the high-refractive index material layer is greater than the refractive index of the low-refractive index material layer; The plurality of high refractive index material layers include a first high refractive index material layer, a second high refractive index material layer, a third high refractive index material layer, a fourth high refractive index material layer and a fifth high refractive index material layer which are sequentially arranged toward the cover plate; The plurality of low-refractive-index material layers include a first low-refractive-index material layer, a second low-refractive-index material layer, a third low-refractive-index material layer, a fourth low-refractive-index material layer and a fifth low-refractive-index material layer sequentially arranged toward the cover plate.

3. The anti-reflection assembly according to claim 2, characterized in that: The thickness L1 of the first low refractive index material layer satisfies: 90nm≤L1≤110nm; The thickness H1 of the first high refractive index material layer satisfies: 35nm≤H1≤45nm; The thickness L2 of the second low refractive index material layer satisfies: 5nm≤L2≤15nm; The thickness L3 of the third low refractive index material layer satisfies: 18nm≤L3≤28nm; The thickness H3 of the third high refractive index material layer satisfies: 30nm≤H3≤40nm; The thickness L4 of the fourth low refractive index material layer satisfies: 45nm≤L4≤55nm; The thickness H5 of the fifth high refractive index material layer satisfies: 3nm≤H5≤8nm.

4. The anti-reflection assembly according to claim 3, characterized in that: The thickness H2 of the second high refractive index material layer satisfies: 90nm≤H2≤100nm; The thickness H4 of the fourth high refractive index material layer satisfies: 10nm≤H4≤20nm; The thickness L5 of the fifth low-refractive-index material layer satisfies: 55 nm ≤ L5 ≤ 65 nm.

5. The anti-reflection assembly according to claim 3, characterized in that: The thickness L1 of the first low-refractive-index material layer satisfies: 100 nm≤L1≤110 nm.

6. The anti-reflection assembly according to claim 3, characterized in that: The thickness L2 of the second low-refractive-index material layer satisfies: 10 nm ≤ L2 ≤ 15 nm.

7. The anti-reflection assembly according to claim 2, characterized in that: The first high refractive index material layer is located between the first low refractive index material layer and the cover plate.

8. The anti-reflection assembly according to claim 7, characterized in that: The low-refractive-index material layer further includes a sixth low-refractive-index material layer, and the sixth low-refractive-index material layer is located between the fifth high-refractive-index material layer and the cover plate.

9. The anti-reflection assembly according to claim 2, wherein: The high refractive index material layer includes silicon nitride, and the low refractive index material layer includes silicon dioxide.

10. The anti-reflection assembly according to claim 1, characterized in that: The light shielding member includes ink, and the ink is located on a second side surface of the cover plate, where the second side surface is opposite to the first side surface.

11. The anti-reflection assembly according to claim 1, wherein: The curved surface has a tangent at an end away from the straight cover portion, and an angle between the tangent and the plane where the straight cover portion is located is an arc angle, and the arc angle is greater than or equal to 40° and less than or equal to 55°.

12. The anti-reflection assembly according to claim 1, wherein: The reflectivity of the anti-reflection component in the in-plane area is lower than the reflectivity of the anti-reflection component in the light-shielding area.

13. The anti-reflection assembly according to claim 12, wherein: There is a reflectivity difference between the reflectivity of the anti-reflection component in the in-plane area and the reflectivity of the anti-reflection component in the shading area, and the reflectivity difference is greater than or equal to 1% and less than or equal to 1.5%.

14. The anti-reflection assembly according to claim 1, wherein: The invention also includes a supporting layer, which is arranged on the surface of the anti-reflection film away from the cover plate.

15. A display panel, characterized in that: include: substrate; A plurality of light-emitting elements are disposed on one side of the substrate; The anti-reflection assembly according to any one of claims 1 to 14, wherein the anti-reflection assembly is located on a side of the light-emitting element away from the substrate, and the anti-reflection film is located on a side of the cover plate away from the substrate.

16. The display panel according to claim 15, wherein: It also includes a touch function layer and a color filter layer, wherein the color filter layer includes a plurality of color resists; In a direction perpendicular to the plane where the substrate is located, the touch function layer is located between the light emitting element and the color resist, and the color filter layer is located between the touch function layer and the cover plate.

17. The display panel according to claim 15, wherein: The value of b of the reflected light of the display panel in the in-plane area in the Lab color space is greater than -6 and less than 0; And / or, the value of a of the reflected light of the display panel in the in-plane area in the Lab color space is greater than -2 and less than 2.

18. The display panel according to claim 17, wherein: The display panel has a chromaticity difference between the in-plane area and the light-shielding area that is less than 2.

19. A display device, characterized in that: The display panel comprises the display panel according to any one of claims 15 to 18.

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