摘要:
A field emission cathode device includes an insulative substrate, a number of cathode electrodes, and a number of liner electron emission units. The insulative substrate has a top surface and a bottom surface. The insulative substrate defines a number of openings. The cathode electrodes are located on the bottom surface. Each of the linear electron emission units has a first portion secured between the insulative substrate and one corresponding cathode electrode and a second portion received in one corresponding opening.
摘要:
This method of forming a carbonaceous material projection structure includes: the step of applying a resist 11 onto a diamond substrate 10; the step of forming holes 12 in the applied resist 11, the holes 12 being provided according to a predetermined arrangement, a wall 12b of each of the holes 12 being inversely tapered from an aperture 12a toward a bottom; the step of depositing a mask material through the aperture 12a to form a mask deposition 14 in each of the holes 12; the step of lifting off a mask material 13 deposited on the resist 11 together with the resist 11; and etching the diamond substrate 10 using the mask deposition 14 as a mask to form a carbonaceous material projection.
摘要:
A method of fabricating an emitter plate 12 for use in a field emission device comprising the steps of providing an insulating substrate 18 and forming a first conductive layer 13 on the insulating substrate 18. This is followed by the steps of forming an insulating layer 20 on the first conductive layer 13 and forming a second conductive layer 22 on the insulating layer 20. Then, a plurality of apertures 34 are formed through the second conductive layer 22 and through the insulating layer 20. A lift-off layer 36 is then formed on the second conductive layer 22. The lift-off layer 36 is formed by a plating process wherein the plating bath has a pH between 2.25 and 4.5, and current densities of 1 to 2O mA/cm.sup.2. The method may further comprise depositing conductive material through the plurality of apertures 34 to form a microtip 14 in each of the plurality of apertures 34. The excess deposited conductive material 14' and the lift-off layer 36 are then removed from the second conductive layer 22.
摘要翻译:一种制造用于场发射器件的发射极板12的方法,包括以下步骤:在绝缘衬底18上提供绝缘衬底18并形成第一导电层13.其后是在绝缘衬底18上形成绝缘层20 第一导电层13并在绝缘层20上形成第二导电层22.然后,多个孔34穿过第二导电层22并通过绝缘层20形成。然后,将剥离层36形成在 第二导电层22.剥离层36通过电镀工艺形成,其中电镀浴的pH为2.25至4.5,电流密度为1至20mA / cm 2。 该方法还可以包括通过多个孔34沉积导电材料,以在多个孔34的每一个中形成微尖端14。然后将过量的沉积的导电材料14'和剥离层36从第二导电层 22。
摘要:
An ion source using a field emission device is provided. The field emission device includes an insulative substrate, an electron pulling electrode, a secondary electron emission layer, a first dielectric layer, a cathode electrode, and an electron emission layer. The electron pulling electrode is located on a surface of the insulative substrate. The secondary electron emission layer is located on a surface of the electron pulling electrode. The cathode electrode is located apart from the electron pulling electrode by the first dielectric layer. The cathode electrode has a surface oriented to the electron pulling electrode and defines a first opening as an electron output portion. The electron emission layer is located on the surface of the cathode electrode and oriented to the electron pulling electrode.
摘要:
A field emission cathode device includes an insulative substrate, a plurality of cathode electrodes, and a plurality of electron emission units. The insulative substrate has a top surface and a bottom surface. The insulative substrate defines a plurality of openings. The cathode electrodes are located on the bottom surface. Each of the electron emission units has a first portion secured between the insulative substrate and one corresponding cathode electrode and a second portion received in one corresponding opening.
摘要:
A light source includes a hot electron source comprising a cathode that generates an electron beam and an anode comprising a germanium containing material positioned adjacent to the cathode. The anode is biased so that the electron beam accelerates towards the anode where some electrons are absorbed and then relax to both direct energy bands and indirect energy bands causing stimulation of low energy electrons from the indirect energy band to the direct energy band, thereby creating electroluminescence.
摘要:
A first side has a first surface on which is located a material, at least a portion of which is to be formed into at least one tip. A second side has a second surface which is heated. At least one of the first and second surfaces being moved so material located on the first surface comes into physical contact with the second surface. Then at least one of the first side and the second side are moved, wherein the physical contact between the material and the second surface is maintained, causing the material to stretch between the second surface and the first surface, generating at least one capillary bridge. Movement is continued until the physical contact between the material and the second surface is broken resulting in the formation of at least one sharp conductive tip.
摘要:
A field emission cathode device includes an insulative substrate, a number of cathode electrodes, and a number of liner electron emission units. The insulative substrate has a top surface and a bottom surface. The insulative substrate defines a number of openings. The cathode electrodes are located on the bottom surface. Each of the linear electron emission units has a first portion secured between the insulative substrate and one corresponding cathode electrode and a second portion received in one corresponding opening.
摘要:
A first side has a first surface on which is located a material, at least a portion of which is to be formed into at least one tip. A second side has a second surface which is heated. At least one of the first and second surfaces being moved so material located on the first surface comes into physical contact with the second surface. Then at least one of the first side and the second side are moved, wherein the physical contact between the material and the second surface is maintained, causing the material to stretch between the second surface and the first surface, generating at least one capillary bridge. Movement is continued until the physical contact between the material and the second surface is broken resulting in the formation of at least one sharp conductive tip.
摘要:
An ion source using a field emission device is provided. The field emission device includes an insulative substrate, an electron pulling electrode, a secondary electron emission layer, a first dielectric layer, a cathode electrode, and an electron emission layer. The electron pulling electrode is located on a surface of the insulative substrate. The secondary electron emission layer is located on a surface of the electron pulling electrode. The cathode electrode is located apart from the electron pulling electrode by the first dielectric layer. The cathode electrode has a surface oriented to the electron pulling electrode and defines a first opening as an electron output portion. The electron emission layer is located on the surface of the cathode electrode and oriented to the electron pulling electrode.