Electroluminescent display

Abstract

This invention provides an electroluminescent display comprising an electroluminescent display panel and an anti-glare film. The electroluminescent display panel has a pixel density greater than 250 PPI and a plurality of sub-pixels with widths of 10 μm to 40 μm. The anti-glare film is disposed on the display side of the electroluminescent display panel; wherein the anti-glare layer of the anti-glare film comprises an acrylic binder and a plurality of first spherical organic microparticles with a refractive index of 1.55 to 1.60. By matching the average width (RSm) of the plurality of protruding microstructures formed on the surface of the anti-glare layer by the high-refractive-index first spherical organic microparticles with the sub-pixel width, interference between the microstructures of the high-resolution electroluminescent display and the anti-glare film, resulting in flickering light spots, can be avoided.

Claims

1. An electroluminescent display, comprising: an electroluminescent display panel having a display side and a non-display side opposite to each other, wherein the electroluminescent display panel has a pixel density greater than 250 PPI and has a plurality of sub-pixels, each of the sub-pixels having a width of 10 μm to 40 μm; and an anti-glare film having a total haze of 10% to 80%, disposed on the display side of the electroluminescent display panel, wherein... The anti-glare film comprises a transparent substrate and an anti-glare layer disposed on the transparent substrate. The anti-glare layer comprises an acrylic binder and a plurality of first spherical organic microparticles with a refractive index of 1.55 to 1.

60. The first spherical organic microparticles form a plurality of protruding microstructures on the side of the anti-glare layer away from the transparent substrate, wherein the arithmetic mean deviation (Ra) of the line roughness is less than or equal to 0.6 μm and the average width (RSm) is less than or equal to 10 μm. The ratio of the average width (RSm) of each of the protruding microstructures to the width of each of the sub-pixels is between 0.15 and 0.

45.

2. The electroluminescent display of claim 1, wherein the first spherical organic microparticles are polymethyl methacrylate resin microparticles, polystyrene resin microparticles, methyl methacrylate-styrene copolymer microparticles, polyethylene resin microparticles, epoxy resin microparticles or polysiloxane resin microparticles.

3. The electroluminescent display of claim 1, wherein the anti-glare layer of the anti-glare film further comprises a plurality of amorphous inorganic microparticles or second spherical organic microparticles with a refractive index of 1.40 to 1.

55.

4. The electroluminescent display as claimed in claim 3, wherein the amorphous inorganic microparticles are aluminosilicate, talc, mica or silica, and the second spherical organic microparticles are polymethyl methacrylate resin microparticles, polystyrene resin microparticles, methyl methacrylate-styrene copolymer microparticles, polyethylene resin microparticles, epoxy resin microparticles or polysiloxane resin microparticles.

5. The electroluminescent display of claim 1, wherein the acrylic adhesive comprises a (meth)acrylate composition and an initiator, wherein the (meth)acrylate composition comprises 35 to 50 parts by weight of a polyurethane (meth)acrylate oligomer with a functionality of 6 to 15 and a molecular weight between 1,000 and 4,500, 12 to 20 parts by weight of a (meth)acrylate monomer with a functionality of 3 to 6 and a molecular weight less than 800, and 1.5 to 12 parts by weight of a (meth)acrylate monomer with a functionality of less than 3 and a molecular weight less than 500.

6. The electroluminescent display as claimed in claim 1, wherein the transparent substrate is a polymethyl methacrylate (PMMA) film, a polyethylene terephthalate (PET) film, a polyethylene naphthalate (PEN) film, a polycarbonate (PC) film, a triacetyl cellulose (TAC) film, a polyimide (PI) film, a polyethylene (PE) film, a polypropylene (PP) film, a polyvinyl alcohol (PVA) film, a polyvinyl chloride (PVC) film, a cyclic olefin copolymer (COC) film, or a polarizing plate.

7. The electroluminescent display of claim 1, wherein the thickness of the anti-glare layer is between 2 μm and 10 μm.

8. The electroluminescent display of claim 1, wherein the anti-glare film further comprises an anti-reflective layer disposed on one side of the anti-glare layer away from the transparent substrate.

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