Abstract:
PROBLEM TO BE SOLVED: To provide a structure of an electron emission device having high packing density of an emitter and to provide its manufacturing process. SOLUTION: An electron emission property element suitable for a flat panel type display is manufactured by high packing density. An electronic emitter has a base supporting the structure. A lower side non-insulation region patterned into a shape forming a plurality of parallel lines is formed on an insulation material which is the base. An electron emission property filament is formed in a hole extending in an insulation layer provided on the lower side non-insulation region. Typically, a patterned non-insulation gate layer is provided on the insulation layer to form a gate control type device. Preferably, a position of an electron emission mechanism is delimited using a charged particle track. By using the charged particle track, the electron emission mechanism is greatly miniaturized and is arranged by bringing mutual interval close. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
A method of transmitting a data block in a wireless communication system includes generating a data block having a variable size in an upper layer, transmitting a radio resource request message to a base station according to the size of the data block in a medium access control (MAC) layer and transmitting the data block by using a radio resource allocated by using the radio resource request message. For a packet service such as VoIP in which a delay time is important, QoS can be improved by decreasing the delay time of packet transmission and by decreasing a packet discard ratio.
Abstract:
An electron emission film having a pattern of diamond in X-ray diffraction and formed of a plurality of diamond fine grains having a grain diameter of 5 nm to 10 nm is formed on a substrate. The electron emission film can restrict the field intensity to a low level when it causes an emission current to flow, and has a uniform electron emission characteristic.
Abstract:
According to the present invention, a phosphorus-doped diamond film allowing a significantly reduced electron emission voltage, a method for producing the same, and a diamond electron source using the same, such diamond electron source exerting stable and excellent electron emission characteristics, which can be used for a cold cathode surface structure operable with low voltage, are provided. Also, a method for producing a phosphorus-doped diamond film, comprising growing a diamond film on a diamond substrate by a microwave CVD method in an atmosphere containing gases (methane and hydrogen) and phosphorus with the use of tertiary butyl phosphorus as a source of addition of phosphorous, such diamond film containing phosphorus at a concentration of 1015 cm−3 or more, having a resistivity of 107 Ωcm or less, and allowing a voltage for initiation of electron emission to be 30 V or less, and a diamond electron source using the same are provided. In such diamond film, the electron emission voltage is significantly reduced.