Abstract: An optical filter and a plasma display panel (PDP) employing the same, where the optical filter includes a substrate and a selective absorption layer having a maximum transmittance of about 50% or less in a wavelength range of from about 450 nm to about 680 nm, and wherein a difference between a maximum transmittance and a minimum transmittance at about 450 nm, about 530 nm, and about 630 nm is about 10% or less.

Abstract: An electron emission device effectively blocks an electric field generated by an anode, consistently and stably emits electrons at a low gate voltage, and provides a high luminous uniformity and luminous efficiency. In addition, a flat display apparatus using the electron emission device as a backlight unit (BLU) and a method of driving the light emission device are provided.

Abstract: An electron emission device having improved electron emission efficiency and an electron emission type backlight unit including the electron emission device in which an electric field between an anode electrode and a cathode electrode is effectively blocked, and electrons are emitted continuously and stably by a low gate voltage, thereby improving light-emitting uniformity and light-emitting efficiency. Also provided is a flat display apparatus employing the electron emission type backlight unit having the electron emission device. The electron emission device includes a base substrate; an insulating layer disposed on a surface of the base substrate; a cathode electrode formed on the insulating layer; a gate electrode that is formed on the base substrate, separated from the cathode electrode, and higher than the cathode electrode; and an electron emission layer that is electrically connected to the cathode electrode and disposed to face the gate electrode.

Abstract: An electron emission device with improved electron emission efficiency and an electron emission type backlight unit with a new structure using the electron emission device in which an electric field between an anode electrode and a cathode electrode is effectively blocked, and electrons are emitted continuously and stably by a low gate voltage thereby improving light-emitting uniformity and light-emitting efficiency. Also provided is a flat display apparatus employing the electron emission type backlight unit having the electron emission device. The electron emission device includes a base substrate; a cathode electrode formed on the base substrate; a gate electrode that is formed on the base substrate and alternately separated from the cathode electrode when there are more than one; an electron emission layer disposed on a surface of the cathode electrode; and a supplementary electrode formed on the cathode electrode or the gate electrode and is higher than the corresponding electrode.

Abstract: An electron emission device with improved electron emission efficiency and an electron emission type backlight unit with a new structure using the electron emission device in which an electric field between an anode electrode and a cathode electrode is effectively blocked, and electrons are emitted continuously and stably by a low gate voltage, thereby improving light-emitting uniformity and efficiency. Also provided is a flat display apparatus employing the electron emission type backlight unit having the electron emission device. The electron emission device includes a base substrate; a cathode electrode formed on the base substrate having a cross-section whose height is greater than its width; a gate electrode that is formed on the base substrate and alternately separated from the cathode electrode and has a cross-section whose height is greater than its width; and an electron emission layer disposed on a surface of the cathode electrode toward the gate electrode.

Abstract: A flat panel display device includes: a substrate; an electrode composed of metal; and an adhesive layer interposed between the substrate and the electrode. The electrode of the flat panel display device has excellent conductivity. The method of manufacturing the flat panel display device includes: preparing a metal substrate; forming a metal plating substrate by forming a plating mask layer on the metal substrate; forming an electrode on the metal plating substrate; separating the electrode, which is formed on the metal plating substrate, from the metal plating substrate with a cohesive layer; placing the separated electrode on another substrate using an adhesive composition; separating the cohesive layer from the electrode; and heat treating the adhesive composition to form an adhesive layer, the adhesive layer attaching the electrode to the another substrate. This method reduces the likelihood of malfunctioning electrodes being produced and leads to reduced manufacturing costs and processing time.

Abstract: A plasma display panel having a display filter having a black peripheral portion, the black peripheral portion formed from a black treatment layer that includes a black material and a polymer composition, and a method of manufacturing the same.

Abstract: A filter for a display has a first film member that includes a pigment layer that absorbs a light of a certain wavelength band, a second film member that includes an electromagnetic wave absorption layer, and a third film member that includes a specular reflection preventing layer containing a plurality of diffusing elements, and a display apparatus employing such a filter is provided.

Abstract: A plasma display panel (PDP) device having a film filter is disclosed. In one embodiment, the PDP device includes a panel, a conductive layer formed along an edge of a front surface of the panel, and a film filter including an electromagnetic wave absorption layer at least a portion of which contacts the conductive layer, and attached onto the front surface of the panel, wherein the electromagnetic wave absorption layer is configured to absorb electromagnetic wave emitted from the front surface of the panel.

Abstract: Provided are an electromagnetic interference (EMI) shielding film and a plasma display device including the EMI shielding film. The EMI shielding film includes: an adhesive layer formed on a transparent substrate; a metal pattern formed on the adhesive layer; and a transparent selective light absorbing layer containing a transparent material and a tetraazaphorpyrin compound, which is a selective light absorbing material, and filling the space in the metal pattern on the adhesive layer. The EMI shielding film provides improved color gamut, contrast and thermal stability. Since the EMI shielding film can shield EMI and improve the color gamut, the numbers of binding processes and other additional processes in the manufacturing of filters are reduced. In addition, the EMI shielding film can be directly and easily attached to a panel of a plasma display device.

Abstract: Provided are an essentially lead-free black ceramic composition for a filter, a filter formed using the same, and a flat display device including the filter. The lead-free black ceramic composition may include at least one compound selected from the group consisting of B2O3, BaO, and ZnO; and at least one black pigment selected from the group consisting of TiO, CuO, NiO, MnO2, Cr2O3 and Fe2O3. Alternatively, the lead-free black ceramic composition may include Bi2O3; at least one compound selected from the group consisting of B2O3, SiO2, P2O5, Na2O3, Al2O3, BaO, ZnO and TiO2; and at least one black pigment selected from the group consisting of TiO, CuO, NiO, MnO2, Cr2O3 and Fe2O3. The lead-free black ceramic composition for a filter essentially does not contain PbO, which harms human beings and the environment. As a result, the use of the composition is not affected by regulations preventing the use of Pb.

Abstract: Provided are an optical filter for reducing duplicated images and a plasma display panel employing the same. The optical filter includes a transparent substrate, a selective absorption layer deposited on a surface of the transparent substrate, an anti-reflection layer deposited on the selective absorption layer, an electromagnetic wave shield layer deposited on the other surface of the transparent substrate, and a duplicated image reducing layer deposited on the electromagnetic wave shield layer. When using the optical filter, external reflection and duplicated images can be reduced, thereby improving visual agreement and picture quality.

Abstract: A polymer for a chemically amplified negative photoresist and a photoresist composition are provided. A representative polymer of the invention is a compound of formula 5: wherein: R1 through R5 and R14 through R17 are defined as set fourth in the specification, and a, b, c, and d represent the mole ratios of each monomer, wherein a has a value of 0-0.5, b has a value of 0-0.9, c has a value of 0-0.3, and d has a value of 0-0.3, provided that a+b+c+d=1; and n represents the degree of polymerization of each polymer, and has a value of at least 2.

Abstract: Disclosed are a monomer, a polymer for a photoresist, a photoresist composition and a phosphor layer for a cathode ray tube.

Abstract: A polymer for a chemically amplified negative photoresist and a photoresist composition are provided.

Abstract: Disclosed are a monomer, a polymer for a photoresist, a photoresist composition and a phosphor layer for a cathode ray tube.

Abstract: A filming solution contains a copolymerized emulsion having more than 70 wt % of butyl methacrylate and more than one species of monomer, and more than one species of additive. Preferably, the monomer is selected from the group consisting of acrylic acid derivative, methacrylic acid derivative, styrene, acrylamide, and acrylonitrile.

Abstract: A photoresist composition containing a photo-curing polymer and a photosensitive agent, wherein the photosensitive agent comprises at least two compounds selected from the group consisting of 4,4'-diazido-2,2'-stilbenedisulfonate sodium salt, 4,4'-diazo-2,2'-dibenzalacetone disulfonate disodium salt, 2,5-bis(4-azido-2-sulfobenzylidene) cyclopentanone disodium salt and 4,4'-diazido-2,2'-dicinnamylideneacetone sulfonate salt. By performing a lithography process using the photoresist composition, the exposure time can be shortened, thereby improving the yield of products.