Patent ID: 12216350

DETAILED DESCRIPTION

Hereinafter, technical solution in embodiments of the present application will be clearly and completely described with reference to the accompanying drawings in embodiments of the present application. Apparently, the described embodiments are part of, but not all of, the embodiments of the present application. All the other embodiments, obtained by a person with ordinary skill in the art on the basis of the embodiments in the present application without expenditure of creative labor, belong to the protection scope of the present application.

In description of the present application, it should be understood that the terms “upper” and “lower”, etc., that indicating an orientation or a positional relationship are based on an orientation or a positional relationship shown in the accompanying drawings, which are merely intended to facilitate the description of the present application and simplify the description, and are not intended to indicate or imply that a device or an element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the present application. In addition, the terms “first” and “second” are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implying a number of the indicated technical features. Thus, the features defined by “first” and “second” may explicitly or implicitly include one or more of the features. In the description of the present application, “multiple” means the meaning of two or more than two, unless otherwise specifically defined.

In the present application, reference numbers and/or reference letters may be used repeatedly in different embodiments, such repetition is for sake of simplicity and clarity, which in itself does not indicate the relationship between the various embodiments and/or arrangements discussed.

The array substrate, liquid crystal display panel and display device provided by the present application will be described in detail below with reference to specific embodiments and drawings.

Referring toFIG.1, the present application provides a display device1000. The display device1000comprises a display panel1001and a body1002, wherein the display panel1001is disposed in the body1002.

In this embodiment, the display device1000may be a display screen, a notebook, and a computer, etc. The display panel1001may be a display panel such as a liquid crystal display panel, an OLED display panel, an Micro-LED display panel, and an Mini-LED, etc.

Referring toFIG.2, the display panel1001comprises a polarizer110and a display substrate120. The polarizer110comprises a polarized body10and an anti-glare and anti-reflection film20formed on the polarized body10. The polarized body10is formed on a surface of the display substrate120between the anti-glare and anti-reflection film20and the display substrate120.

In this embodiment, the display substrate120may be at least one of a liquid crystal display substrate, an OLED display substrate, an Micro-LED display substrate, and an Mini-LED substrate, etc.

In this embodiment, the polarized body10comprises a compensation film (not shown) formed on the display substrate120, a polarized layer (not shown) formed on the compensation film, and a protective layer (not shown) formed on the polarized layer. The anti-glare and anti-reflection film20is formed on the protective layer, and the protective layer is a substrate of the anti-glare and anti-reflection film20. Wherein, a material of the compensation film may be a cyclo olefin polymer (COP), and a tri-cellulose acetate (TCA), etc, for example, the material of the compensation film may a COP material with a trade name of SANUQI, and TCA materials with trade names of and PK3 and NR01, respectively. A material of the polarized layer may be a material with polarizing effect such as polyvinyl alcohol vinylalcohol polymer (PVA). A material of the protective layer may be a material such as TCA, polymethyl methacrylate (PMMA), and polyethylene terephthalate (PET), etc.

In other embodiments, structure of the polarized body10is not limited to the above structures, and may be adjusted according to an actual condition.

Referring toFIGS.2and3again, the anti-glare and anti-reflection film20comprises a hardened layer21and first extinction particles22dispersed in the hardened layer21. The first extinction particles22comprise a particle core221, a first coating222covering the particle core221, and a second coating223covering the first coating222. The first coating layer222has a refractive index different from that of the second coating layer223.

Specifically, a refractive index of the first coating222is ranging from 1.3 to 1.4, and a material of the first coating layer222is a fluorine-containing ultraviolet curing resin (doped with air gap bubbles) and other low-refractive-index materials. A refractive index of the second coating223is ranging from 1.6 to 1.7, and a material of the second coating223is ultraviolet curable resin and other high-refractive-index materials.

The first extinction particles22may be directly pressed into the hardened layer21by an embossing process, etc., or the first extinction particles22may be mixed into a material for preparing the hardened layer21, and then the hardened layer21may be formed by coating.

Referring toFIG.4, when the light L1enters the second coating223from outside, a part of the light is reflected on a surface of the second coating223and generates a first reflected light L2, and another part of the light is refracted inside the second coating223and generates a refracted light L3. The refracted light L3is incident on a contact surface between the first coating222and the second coating223and is reflected on the contact surface to generate a second reflected light L4. According to interference principle of reflected light, destructive interference may be occurred among lights incident on coatings with different refractive indexes of the first extinction particles. Since the refractive indexes of the first coating222and the second coating223of the first extinction particles22provided by the present application are different, destructive interference may be occurred between the first reflected light L2and the second reflected light L4, so that reflected light of the light L1on the surface of the first extinction particles22can be reduced, so as to reduce reflectivity of the first extinction particles22, thereby improving anti-reflection effect of the anti-glare and anti-reflection film20, so as to improve quality of display screen of the display panel1001.

Theoretically, formula for calculating reflectivity of the anti-glare and anti-reflection film20is as follows:

R=n12(n0-n2)2-(n02-n12)⁢(n12-n22)⁢sin2(2⁢π⁢n1⁢d/λ)n12(n0+n2)2⁢(n02-n12)⁢(n12-n22)⁢sin2(2⁢π⁢n1⁢d/λ)

Wherein, R is reflectivity, no is refractive index of a medium in which the incident light is located (the refractive index of air is 1), n1is refractive index of a first layer (the second coating223), n2is refractive index of a second layer (the first coating222), d is thickness of the second layer223, and k is wavelength of the incident light. Theoretically, reflectivity is the lowest when the thickness meets a formula of n1d=kλ/4. The formula is as follows:

R=(n2-n12n2+n12)2

Therefore, d can be calculated based on the formula of n1d=kλ/4.

In an alternative embodiment of the present application, at least a part of the first extinction particles22are exposed from a surface of the hardened layer21away from the polarized body10to change the surface of the hardened layer21away from the polarized body10into a roughened surface, so as to improve haze of the anti-glare and anti-reflection film29, a part of the light may be scattered on the rough surface of the anti-glare and anti-reflection film20, and light entering the anti-glare and anti-reflection film20may be internally scattered and refracted, so that the anti-glare effect of the anti-glare and anti-reflection film20may be improved, thereby improving quality of display screen of the display panel1001.

In another alternative embodiment of the present application, another part of the first extinction particles22accumulates inside the hardened layer21and faces the polarized body10.

In an alternative embodiment of the present application, the first extinction particles22are distributed in rows in the hardened layer21. Specifically, in this embodiment, the first extinction particles22are distributed in two rows in the hardened layer21, wherein one row of the first extinction particles22is exposed from the hardened layer21, and the other row of the first extinction particles22is dispersed inside the hardened layer21.

In an alternative embodiment of the present application, the first extinction particles22exposed from the hardened layer21are uniformly distributed and uniform in size, so that the anti-glare and anti-reflection effect of the whole anti-glare and anti-reflection film20is uniform, phenomenon of strong local reflection light and glare can be avoided, and quality of display screen of the display panel1001can be further improved.

In an alternative embodiment of the present application, the first extinction particles22exposed from the hardened layer21are spherical.

In an alternative embodiment of the present application, a height of a portion of the first extinction particles22exposed from the hardened layer21protruding from a surface of the hardened layer21away from the polarized body10is defined as H, and H is within a following range: ⅔R≤H<2R, wherein R is a radius of the first extinction particles22. The anti-glare and anti-reflection film can have a better haze by providing H within the range of ⅔R≤H<2R.

In an alternative embodiment of the present application, the first extinction particles22have a diameter in a micron scale. Specifically, a diameter of the particle core is defined as d1, a thickness of the first coating is defined as d2, and a thickness of the second coating is defined as d3; wherein 2 μm≤d1≤3 μm, 0.5 μm≤d2≤1.5 μm, and 100 nm≤d3≤200 nm.

According to existing research theory, a particle has a better scattering intensity when the particle size is less than 4 μm, therefore, when the first extinction particles22have size as above (2 μm≤d1≤3 μm, 0.5 μm≤d2≤1.5 μm, and 100 nm≤d3≤200 nm), the first extinction particles22have a better scattering intensity, so that the anti-glare and anti-reflection effect of the anti-glare and anti-reflection film20can be improved, thereby improving quality of display screen of the display panel1001.

In an alternative embodiment of the present application, a material of the hardened layer21is selected from one of an acrylic resin, a polyvinyl chloride resin and an aqueous polyurethane resin.

In another alternative embodiment of the present application, the material of the hardened layer21is a composite resin, and the composite resin comprises at least two different kinds of resins. By using composite resin as the material of the hardened layer21, on the one hand, the anti-glare and anti-reflection film20can have a better extinction effect, on the other hand, the hardened layer21made of the composite resin has a better hardness. Specifically, the composite resin is a mixture of at least two of an acrylic resin, a polyvinyl chloride resin, and an aqueous polyurethane resin, etc.

In an alternative embodiment of the present application, the particle core221is selected from at least one of fumed SiO2, precipitated SiO2, modified SiO2, and metal oxide particles.

In another alternative embodiment of the present application, the anti-glare and anti-reflection film20further comprises second extinction particles23, and the second extinction particles23are dispersed in the hardened layer21.

Specifically, the second extinction particles23may be exposed from the hardened layer21, or may not be exposed from the hardened layer21.

Wherein, the second extinction particles23are unmodified extinction particles, that is, the second extinction particles23do not comprise the first coating222and the second coating223.

In an alternative embodiment of the present application, the second extinction particles23may be at least one of fumed SiO2, precipitated SiO2, modified SiO2, and metal oxide particles, etc.

In an alternative embodiment of the present application, a mass percentage of the first extinction particles22is greater than 80% of a total mass of the first extinction particles22and the second extinction particles23, so as to ensure the anti-glare and anti-reflection effect of the anti-glare and anti-reflection film20.

In an alternative embodiment of the present application, a size of the second extinction particles23is smaller than a size of the first extinction particles22.

The present application provides an anti-glare anti-reflection film, a polarizer and a display panel, wherein the polarizer comprises an anti-glare and anti-reflection film formed on the polarized body; wherein the anti-glare anti-reflection film comprises a hardened layer; and first extinction particles dispersed in the hardened layer; and wherein the first extinction particles comprise a particle core, a first coating covering the particle core, and a second coating covering the first coating, and the first coating has a refractive index different from that of the second coating. According to interference principle of reflected light, destructive interference may be occurred among lights incident on coatings with different refractive indexes of the first extinction particle, which can reduce reflectivity of the anti-glare and anti-reflection film, thereby improving anti-reflection effect of the anti-glare and anti-reflection film, and improving quality of display screen of the display panel. In addition, at least a part of the first extinction particles are exposed from a surface of the hardened layer away from the polarized body to change the surface of the hardened layer away from the polarized body into a roughened surface, so as to improve haze of the anti-glare and anti-reflection film, light may be scattered on the rough surface of the anti-glare and anti-reflection film, and light entering the anti-glare and anti-reflection film may be internally scattered and refracted, so that the anti-glare effect of the anti-glare and anti-reflection film may be improved, thereby improving quality of display screen of the display panel.

In summary, although the present application has been disclosed as the above preferred embodiments, the above preferred embodiments are not intended to limit the present application, and a person skilled in the art may make various changes and modifications without departing from the spirit and scope of the present application. Therefore, the protection scope of the present application is subject to the scope defined by the claims.