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 (110); a cathode electrode (120) formed on the base substrate; a gate electrode (130) that is formed on the base substrate and alternately separated from the cathode electrode when there are more than one; an electron emission layer (150) disposed on a surface of the cathode electrode; and a supplementary electrode (125) formed on the cathode electrode or the gate electrode which is higher than the corresponding gate or cathode electrode.
Abstract:
An electron emission device (102) 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 (80) and a cathode electrode (120) 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 (100) having the electron emission device. The electron emission device includes a base substrate (110); a cathode electrode formed on the base substrate having a cross-section whose height is greater than its width; a gate electrode (140) 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 (150) disposed on a surface of the cathode electrode toward 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 (110); a cathode electrode (120) formed on the base substrate; a gate electrode (130) that is formed on the base substrate and alternately separated from the cathode electrode when there are more than one; an electron emission layer (150) disposed on a surface of the cathode electrode; and a supplementary electrode (125) formed on the cathode electrode or the gate electrode which is higher than the corresponding gate or cathode electrode.
Abstract:
An electron emission device and a flat display apparatus having the same are provided to prevent permeation of electric field of an anode electrode into electric field between a cathode electrode and a gate electrode by lengthening a cathode electrode and a gate electrode toward an anode electrode. A first substrate(90) includes an anode electrode(80) and a phosphor layer. A second substrate(110) is disposed at a predetermined position apart from the first substrate. A plurality of cathode electrodes(120) are formed on the second substrate. The cathode electrode has the height greater than the width thereof. A plurality of gate electrodes(140) are formed alternately on the second substrate. The gate electrode has the height greater than the width thereof. An electron emission layer(150) is disposed on a lateral surface of the cathode electrode. A spacer(60) is formed between the first and second substrates in order to maintain a gap therebetween.