Low voltage, blue phosphor for highly efficient field emission display screens

2001 ◽  
Vol 19 (1) ◽  
pp. 14 ◽  
Author(s):  
V. A. Bolchouchine ◽  
E. T. Goldburt ◽  
B. N. Levonovitch ◽  
V. N. Litchmanova ◽  
N. P. Sochtine
Keyword(s):  
Field Emission ◽  
Low Voltage ◽  
Field Emission Display ◽  
Highly Efficient ◽  
Blue Phosphor

Low-voltage cathodoluminescence properties of green-emitting ZnAl2O4:Mn2+ nanophosphors for field emission display

2011 ◽  
Vol 509 (21) ◽  
pp. 6317-6320 ◽  
Author(s):  
Xiaojun Wang ◽  
Mingchang Zhang ◽  
Hui Ding ◽  
Huili Li ◽  
Zhuo Sun
Keyword(s):  
Field Emission ◽  
Low Voltage ◽  
Field Emission Display

Enhancement of Cathodoluminescent Characteristic from CaTiO3:Pr3+, by Ga3+ Addition

2001 ◽  
Vol 667 ◽  
Author(s):  
Jung-Woo Byun ◽  
Byung-Kyo Lee ◽  
Dong-Kuk Kim ◽  
Seong-Gu Kang ◽  
Seung-Youl Kang ◽  
...  
Keyword(s):  
Valence Band ◽  
Conduction Band ◽  
Field Emission ◽  
Emission Intensity ◽  
Low Voltage ◽  
Host Lattice ◽  
High Conductivity ◽  
Molar Concentration ◽  
Field Emission Display ◽  
Red Emission

ABSTRACTCaTiO3:Pr3+ as an oxide phosphor is expected to be applied for a field emission display(FED) due to its relatively high conductivity. For the practical use, however, the CL intensity of CaTiO3:Pr3+ has to be enhanced. We introduced Ga3+ as a co-activator into the phosphor and investigated the CL characteristics with various Ga3+ concentrations. The CL intensity of CaTiO3:Pr3+ was remarkably increased when Ti4+ atom was replaced by the Ga3+. When the Ga3+ concentration is 5 times of Pr3+ molar concentration, the emission intensity of the CaTiO3:Pr3+ phosphor with Ga3+ is about 5 times higher than Ga3+-free samples. So, it was concluded that the addition of Ga3+ is essential to enhance CL property at low voltage. We proposed the following mechanism that excitation into the host lattice leads to the formation of electrons in the conduction band and holes in the valence band. The electrons in the conduction band recombine with the holes trapped at Ga3+ and this energy is effectively transferred to Pr3+ ion, which gives its own characteristic red emission.

Performance Study of 4-Inch Full Color Field Emission Display Devices

1997 ◽  
Vol 471 ◽  
Author(s):  
J. M. Kim ◽  
J. P. Hong ◽  
N. S. Park ◽  
J. E. Jung ◽  
Y. W. Jin ◽  
...  
Keyword(s):  
Field Emission ◽  
Low Voltage ◽  
Performance Study ◽  
Field Emission Display ◽  
Emission Pattern ◽  
Display Devices ◽  
Full Color ◽  
Color Field ◽  
Analysis System ◽  
Performance Results

ABSTRACTWe present performance results of 4-inch full-color field emission display (FED) devices which are constructed by using Spindt type arrays with 80,000,000 Mo-metal tips, spacers, uniquely-developed low voltage color phosphors. Spindt type microtips with less than 1.1 urn in hole size are fabricated using a total internal reflection (TIR) holographic lithograpy method. Each color phosphor is electrophoretically deposited on the ITO line. The spacer which is screen-printed is characterized by a 3-dimentional surface analysis system. Electron emission pattern and luminance test of each pixel without cross talk are analyzed under different gate voltages. In addition, the total pressure and residual gas distributions inside the panel are investigated at various gap sizes between the cathode and anode plates.

Development of a conical anode Fe-gun for low voltage SEM

1988 ◽  
Vol 46 ◽  
pp. 978-979
Author(s):  
T. Miyokawa ◽  
S. Norioka ◽  
S. Goto
Keyword(s):  
High Resolution ◽  
Field Emission ◽  
Low Voltage ◽  
Irradiation Damage ◽  
Cold Cathode ◽  
Virtual Source ◽  
Source Position ◽  
Electrostatic Lens ◽  
Electrostatic Lenses ◽  
Wide Range

Field emission SEMs (FE-SEMs) are becoming popular due to their high resolution needs. In the field of semiconductor product, it is demanded to use the low accelerating voltage FE-SEM to avoid the electron irradiation damage and the electron charging up on samples. However the accelerating voltage of usual SEM with FE-gun is limited until 1 kV, which is not enough small for the present demands, because the virtual source goes far from the tip in lower accelerating voltages. This virtual source position depends on the shape of the electrostatic lens. So, we investigated several types of electrostatic lenses to be applicable to the lower accelerating voltage. In the result, it is found a field emission gun with a conical anode is effectively applied for a wide range of low accelerating voltages.A field emission gun usually consists of a field emission tip (cold cathode) and the Butler type electrostatic lens.

Comparison of freeze-fractured yeast replicas using conventional TEM and low-voltage field-emission SEM

1989 ◽  
Vol 47 ◽  
pp. 74-75
Author(s):  
William P. Wergin ◽  
Eric F. Erbe ◽  
Terrence W. Reilly
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Field Emission ◽  
Low Voltage ◽  
Objective Lens ◽  
Specimen Preparation ◽  
Lens System ◽  
Air Drying ◽  
Preparation Techniques ◽  
Scanning Electron

Although the first commercial scanning electron microscope (SEM) was introduced in 1965, the limited resolution and the lack of preparation techniques initially confined biological observations to relatively low magnification images showing anatomical surface features of samples that withstood the artifacts associated with air drying. As the design of instrumentation improved and the techniques for specimen preparation developed, the SEM allowed biologists to gain additional insights not only on the external features of samples but on the internal structure of tissues as well. By 1985, the resolution of the conventional SEM had reached 3 - 5 nm; however most biological samples still required a conductive coating of 20 - 30 nm that prevented investigators from approaching the level of information that was available with various TEM techniques. Recently, a new SEM design combined a condenser-objective lens system with a field emission electron source.

Sign in / Sign up

Export Citation Format

Share Document