Abstract:
An electron emission source comprising a branch carbon-based material, an electron emission device comprising the same, and a composition for preparing electron emission source are provided to reduce a screening effect between electron emission sources by dispersing uniformly a carbon-based material in an electron emission site. An electron emission source includes three branches. The length of each branch is 1 to 10 micrometers. The electron emission source includes branch carbon-based material and vehicles. Angles among the three branches are 40 to 160 degrees. The sum of the angles among the three branches is 360 degrees. Two angles of the three branches are 90 degrees and the remaining angle is 180 degrees. The carbon-based material is carbon nano-tube, graphite, or diamond.
Abstract:
An electron emission device and a preparing method thereof are provided to improve current density and electron emission lifetime by forming a coating layer having a band gap material on an electron emission source. A first substrate(110) and a second substrate are disposed to each other. A cathode electrode(120) is formed on the first substrate. An electron emission source(160) is electrically connected with the cathode electrode formed on the substrate and includes a carbon-based material. An anode electrode(180) is formed on the second substrate. A phosphor layer(170) is used for radiating light by using electrons emitted from the electron emission source. A coating layer is formed on the electron emission source. The coating layer is formed of a band gap material.
Abstract:
An electron emission device is provided to suppress abnormal discharge due to a high voltage of an anode electrode by forming a protective layer on edges of drive electrodes exposed to an internal vacuum space. A first substrate(2) and a second substrate(4) are disposed opposite to each other in order to form an internal vacuum space. An electron emission unit(10) is provided on the first substrate and includes electron emission units and drive electrodes(14,16,18) for controlling electron emission operations and electron beam paths of the electron emission units. An emission unit is provided on the second substrate and includes phosphor layers(24) and anode electrodes(28) formed on one side of each the phosphor layer. A protective layer(36) is formed to cover edges of the drive electrode facing the anode electrodes.
Abstract:
An electron emission device and a method for fabricating thereof are provided to obtain initial voltage by differently forming height of an insulating layer in a sub electrode. An electron emission device comprises a cathode electrode(21), a sub electrode(22), a first insulating layer(23), a first gate electrode(24), a second insulating layer(26), a second gate electrode(27), and an electron emission unit(28). The cathode electrode is formed by depositing conductive material on a substrate(20). The sub electrode is formed as a predetermined pattern on the cathode electrode. The first insulating layer is formed having different height in the sub electrode. An insulating hole(25a) is formed to expose a portion of the cathode electrode. The first gate electrode is formed by metal material in the first insulating layer. The second insulating layer is formed by insulating material on the first gate electrode. The electron emission unit is formed in the insulating hole of the cathode electrode.
Abstract:
A method for manufacturing an electron emission device is provided to increase an aspect ratio of an opening of an insulating layer by removing an undercut generated on an electrode or underneath the electrode. An insulating layer(14) and an electrode layer(16') having an opening(16a) are sequentially laminated on an upper surface of a substrate(10). An opening(14a) is formed on the insulating layer by etching a part of the insulating layer exposed by the opening. An undercut is removed from the insulating layer by performing a thermal process for the insulating layer. The thermal process is performed at Œ5% of softening temperature.
Abstract:
An electron emission device is provided to fix firmly a spacer on a substrate by inserting and fixing the spacer into a groove part formed on an insulating layer. A first substrate(2) and a second substrate(4) are arranged opposite to each other. A first electrode(6) and a second electrode(10) are formed on both sides of an insulating state of the first substrate. An electron emission unit(12) is connected with one of the first electrode and the second electrode. A plurality of spacers(30b) are disposed between the first substrate and the second substrate in order to maintain a gap between the first substrate and the second substrate. A plurality of groove parts(31b) are formed on the insulating layer. A part of the spacers is inserted into the groove parts.
Abstract:
An electron emission device and a method for manufacturing the same are provided to prevent a malfunction of an electron emission device by improving an insulating characteristic between a cathode electrode and a gate electrode. A cathode electrode(11) is formed on a substrate(10). An insulating layer(12) is formed on a substrate in order to cover the cathode electrode. A sacrificial layer is formed on the insulating layer. An opening is formed at the sacrificial layer by patterning the sacrificial layer. An opening(12a) is formed at the insulating layer by etching an exposed part of the insulating layer. The sacrificial layer is removed therefrom. An organic material is removed from a wall face of the opening of the insulating layer in order to form the wall face of the opening of the insulating layer as a smooth inclined profile. A gate electrode(14) having an opening is formed on the insulating layer.
Abstract:
본 발명은 구동 전극들간 기생 캐패시턴스를 줄이기 위하여 절연층 형상을 개선한 전자 방출 소자 및 그 제조 방법에 관한 것으로서, 본 발명에 따른 전자 방출 소자는 서로 대향하여 배치되는 제1 기판 및 제2 기판과, 제1 기판 위에 형성되는 캐소드 전극과, 절연층을 사이에 두고 캐소드 전극 위에 형성되는 게이트 전극과, 캐소드 전극과 게이트 전극과의 교차 영역에서 캐소드 전극 위에 형성되는 전자 방출부와, 제2 기판에 형성되는 형광층과, 형광층의 일면에 형성되는 적어도 하나의 애노드 전극을 포함한다. 여기서, 게이트 전극은 전자 방출부에 대응하는 개구부를 구비하고, 절연층은 전자 방출부에 대응하는 제1 개구부와 교차 영역에 대응하는 제2 개구부로 이루어진 개구부를 구비한다. 전자방출부, 캐소드전극, 게이트전극, 절연층, 개구부, 캐패시턴스, 캐패시터
Abstract:
본 발명은 아크 방전을 억제하기 위한 전자 방출 소자에 관한 것으로서, 본 발명에 따른 전자 방출 소자는 서로 대향 배치되는 제1 기판 및 제2 기판과, 제1 기판에 제공되며 전자들을 방출하는 전자 방출 유닛과, 제2 기판에 제공되며 전자들에 의해 가시광을 방출하는 발광부와, 제2 기판에서 발광부와 임의 거리를 두고 이를 둘러싸도록 형성되는 전도 구배층 및 전도 구배층으로부터 제2 기판의 일측 가장자리로 인출되며 접지 전압을 인가받는 리드선을 구비하는 아킹 방지부와, 전자 방출 유닛과 발광부 및 전도 구배층을 그 내부에 두며 제1 기판과 제2 기판 사이의 가장자리에 배치되는 측벽을 포함한다. 이 때, 전도 구배층은 발광부로부터 멀어질수록 큰 두께를 가지는 도전막으로 이루어진다. 전자방출유닛, 전자방출부, 발광부, 형광층, 흑색층, 애노드전극, 전도구배층
Abstract:
본 발명은 전자방출소자용 전자방출부의 형성방법 및 이를 이용한 전자방출소자의 제조방법에 관한 것이다. 본 발명에 따른 전자방출소자용 전자방출부의 형성방법은 하부 구조물 상에 전자방출영역을 정의하는 희생층을 선택적으로 형성하는 단계와, 하부 구조물 상부 전체에 전자방출물질을 도포하는 단계와, 희생층을 마스크로 하여 전자방출물질을 노광하는 단계와, 제1 현상액으로 전자방출물질을 현상하는 단계와, 제2 현상액으로 희생층을 현상하는 단계를 포함하는 전자방출소자용 전자방출부의 형성방법을 제공한다. 이러한 구성에 의하여, 본 발명은 전자방출부를 형성하는 공정에서 희생층 현상시 발생하는 전자방출물질의 잔류물로 인한 전자방출부 및 전극간 전기적 단락을 방지할 수 있다.