摘要:
A two-sided printed circuit board including a base having a first surface, a second surface substantially parallel to the first surface, and a plurality of through-holes formed in the base; a first conductive layer provided on the first surface of the base; a second conductive layer provided on the second surface of the base; and a conductive particle buried in each of the through-holes in a pressurized state for electrically connecting the first conductive layer and the second conductive layer.
摘要:
This invention proposes methods of effectively forming a metal-backed layer and an anode using a metal film transferring sheet in which micro-holes are formed. that is, the metal film transferring sheet is structured by forming a metal film on a mold-releasable, highly characteristic sheet. Then, the metal film having micro-holes of the metal film transferring sheet is transferred onto a phosphor screen. Or, on the metal film of the above-mentioned metal film transferring sheet, is formed a phosphor screen and the metal film, the phosphor screen, etc. are all transferred onto a face plate form an anode of a cathode-ray tube. Then the methods proposed by this invention are applied for making phosphor products of, for example, a cathode-ray tube or a plasma display. According to these methods, there is no need to use a large-scaled manufacturing facility and high quality, low cost products can be obtainable.
摘要:
Coating of heat-soluble material on a substrate or cleaning is performed by supplying a heat-soluble material in heated and melted condition onto a substrate, laying a sheet member on the heat-soluble material, cooling the heat-soluble material to solidify, and peeling off the sheet member.
摘要:
To obtain low insertion loss and low TTE level, a first central transducer, a second transducer and a third transducer are disposed on one surface of a piezoelectric substrate in such a manner that the second and the third transducers are in the direction of propagation (X-direction) of surface acoustic waves launched by the first transducer and the distance between center lines of the first and the second transducers and also the distance between the center lines of the first and the third transducers vary along the Y-direction perpendicular to the X-direction.
摘要:
A printed circuit board has: a base material layer having a first via hole; and an insulating layer having a second via hole, the insulating layer being provided on one surface of the base material layer, wherein a cross-sectional area of the second via hole is smaller than a cross-sectional area of said first via hole, and wherein the first and second via holes are filled with a conductive material.
摘要:
A pattern forming method comprises at least a lower pattern forming step for printing a setting ink on a substrate, a setting step for setting the setting ink, an upper layer pattern forming step for forming a metalo-organic compound paste layer on the lower layer pattern by a printing method, and a firing step for firing at high temperature to remove the lower layer pattern. In the upper layer pattern forming step, the metalo-organic compound paste is printed so that the metalo-organic compound paste may be divided on the hardened setting ink so as to fill up gaps of the lower layer pattern. Otherwise the metalo-organic compound paste is printed on the hardened setting ink, and the metalo-organic compound paste is mechanically cut off, before the metalo-organic compound paste is dried, on the hardened setting ink, thereby forming an upper layer pattern. The setting ink comprises a thermo-setting resin, a setting agent, and an organic solvent, with an amount of nonvolatile materials of 50 to 70 wt. %, or comprises a carbon powder, a thermo-setting resin, a setting agent and an organic solvent, with an amount of nonvolatile materials of 60 to 80 wt. %.
摘要:
A cleaning apparatus is designed to press a heat-soluble resin which is heated and in a tacky state to a heat-soluble ink on an erasable paper having a surface treated with releasing agent, and to peel off the heat-soluble ink.
摘要:
Disclosed is an intaglio printing process which comprises (a) forming an intaglio printing plate having groove patterns, (b) filling said groove patterns with an ink, (c) after drying said ink, forming a curable resin layer on the whole surface of the intaglio printing plate, (d) placing a body to be printed thereon without curing said resin layer, (e) curing the curable resin, and (f) stripping the body from the intaglio printing plate to form the ink patterns corresponding to the groove patterns of the intaglio on the body. There are also disclosed processes for producing a color filter, a black matrix and a circuit board.
摘要:
A print head with elongate electrical conductors and a fixing member containing hexagonal boron nitride, the elongate electrical conductors being embedded in or laminated on the fixing member and exposed at the tips. Electric signals are applied between the conductors and a printing medium to print thereon images corresponding to the electric signals.
摘要:
The present invention provides an improved electro-optical device having a cell for containing a liquid crystal and consisting of two light-transparent plates opposed to each other and having electrically conductive electrodes on the inner surfaces thereof, the electrodes on at least one inner surface being transparent and spacer means between said opposed electrodes; and a power supply coupled to said electrodes for applying an electric voltage to said electrodes, whereas the improvement comprises a liquid crystal in said cell between said electrodes consisting of 99.95 to 65 wt.% of at least one nematic liquid crystal and 0.05 to 35 wt.% of at least one optically active compound of the formula: ##EQU1## wherein X is --N=N-- or ##EQU2##