Display devices with light absorbing metal nanoparticle layers
First Claim
1. A display device comprising:
- a cathode;
an anode;
a luminescent region disposed between the cathode and said anode; and
a light-absorbing layer comprising i) metal nanoparticles, and ii) an inorganic matrix material, wherein the average particle size of the population of metal nanoparticles in the light-absorbing layer is from about 2 to about 20 nm and the metal nanoparticles have a particle size distribution not exceeding +/−
75%;
wherein said light-absorbing layer has a thickness of from about 10 to about 1000 nm, andwherein said metal nanoparticles are present in an amount of about 5 to about 50 percent by volume of said light-absorbing layer, and said matrix material is present in an amount of about 95 to about 50 percent by volume of the light-absorbing layer;
wherein said metal nanoparticles are completely embedded in, or partially embedded in the matrix material.
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Accused Products
Abstract
A display device comprising a light-absorbing layer comprising metal nanoparticles in a matrix material. Suitable matrix materials include organic materials, inorganic materials, polymeric materials, and combinations thereof. The metal nanoparticles may have various regular or irregular shapes and/or two-dimensional or three-dimensional structures. The metal nanoparticles may have a particle size of from about 2 to about 20 nm. In embodiments, the particle size distribution of the nanoparticles does not exceed +/−75%. The light-absorbing layer may have a multiple layer configuration comprising 2 or more individual light-absorbing layers. The light-absorbing layer(s) reduces the reflection of ambient light in a display device.
127 Citations
32 Claims
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1. A display device comprising:
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a cathode; an anode; a luminescent region disposed between the cathode and said anode; and a light-absorbing layer comprising i) metal nanoparticles, and ii) an inorganic matrix material, wherein the average particle size of the population of metal nanoparticles in the light-absorbing layer is from about 2 to about 20 nm and the metal nanoparticles have a particle size distribution not exceeding +/−
75%;wherein said light-absorbing layer has a thickness of from about 10 to about 1000 nm, and wherein said metal nanoparticles are present in an amount of about 5 to about 50 percent by volume of said light-absorbing layer, and said matrix material is present in an amount of about 95 to about 50 percent by volume of the light-absorbing layer; wherein said metal nanoparticles are completely embedded in, or partially embedded in the matrix material. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 30)
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15. A display device comprising:
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an optional substrate; a first electrode; a second electrode; a luminescent region disposed between said first and second electrodes; and a light-absorbing layer comprising; metal nanoparticles, and an inorganic matrix material, wherein said metal nanoparticles have an average particle size of from about 2 to about 20 nm and a particle size distribution not exceeding ±
75%;wherein said light-absorbing layer has a thickness of from about 10 to about 1000 nm, and wherein said metal nanoparticles are present in an amount of about 5 to about 50 percent by volume of said light-absorbing layer, and said matrix material is present in an amount of about 95 to about 50 percent by volume of the light-absorbing layer; wherein said metal nanoparticles are completely embedded in, or partially embedded in the matrix material. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 31, 32)
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Specification