Abstract:
PROBLEM TO BE SOLVED: To provide a substrate for a display element, the substrate excellent in gas barrier property, flexibility, heat resistance and transparency, and excellent in dimensional stability, operation property and secondary processing property. SOLUTION: The substrate for a display element comprises an inorganic glass and a resin layer disposed on each side of the inorganic glass. It is preferable that: the ratio d rsum /d g of the total thickness d rsum of the resin layers to the thickness d g of the inorganic glass ranges from 0.5 to 2.0; the resin layers on both sides of the inorganic glass are made of the same material having the same thickness; the thickness of each resin layer is equal to the thickness of the inorganic glass; and the average coefficient of linear expansion of the substrate for a display element at 170°C is not greater than 20 ppm°C -1 . COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a multi layer circuit panel structure offering a high density and compound interconnection that overcomes defects of an advanced technique circuit assembly. SOLUTION: A method of producing a via for a circuit assembly includes: (a) process to apply a curable coating composition on a substrate to form uncured coating thereon, in which part of or all the substrate is electrically conductive, (b) process to apply resist on the uncured coating, (c) process to image the resist at a predetermined position, (d) process to develop the resist to expose a predetermined area of the uncured coating, (e) process to remove the exposed area of the uncured coating, and (f) process to heat the coated substrate of the process (e) with sufficient temperature and time for curing the coating. Process to produce the circuit assembly will be disclosed as well. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PURPOSE: To perform etching with less side etching and with high accuracy in the stage of etching the conductor layer on an insulation substrate at the pattern conforming to the pattern of a resist film, by adhering the resist film on the side etched part and again etching the same. CONSTITUTION: An etching resistant mask layer 13 of a prescribed pattern is formed of a material of rubber or polyester on the surface of the conductive material 12 on an insulation substrate 11. The material 12 as a material to be etched is etched to about a fraction of the thickness thereof by the 1st etching. The substrate is then dipped in an adhesive agent soln. consisting of an aq. soln. glycol and an org. acid such as maleic acid to put the soln. 31 of the adhesive agent in the grooves 30 formed by the etching; thereafter, the soln. is dried thereby forming a thin film 32 of the adhesive agent and covering the side face of the grooves 30 with the mask layer 13 in the side etched part. The thin film 32 of the adhesive agent in the part not covered with the layer 13 is evaporated and the conductive material is subjected to the next etching, whereby the etching is accomplished with less side etching. COPYRIGHT: (C)1983,JPO&Japio
Abstract:
Mobile ion diffusion causes a shift in the threshold voltage of non¬ volatile storage elements in a memory chip, such as during an assembly process of the memory chip. To reduce or avoid such shifts, a coating can be applied to a printed circuit board substrate or a leader frame to which the memory chip is surface mounted. An acrylic resin coating having a thickness of about 10 μm may be used. A memory chip is attached to the coating using an adhesive film. Stacked chips may be used as well. Another approach provides metal barrier traces over copper traces of the printed circuit board, within a solder mask layer. The metal barrier traces are fabricated in the same pattern as the copper traces but are wider so that they at least partially envelop and surround the copper traces. Corresponding apparatuses and fabrication processes are provided.
Abstract:
A thin laminate passive electrical device (40, 70, 90, 100), such as, a capacitor, and a method of fabricating a thin laminate passive electrical device are provided. The passive electrical device (40, 70, 90, 100) includes two conductors (32, 34), for example, copper foil conductors, separated by a dielectric having a first layer (36) of a first material having a softening point temperature greater than a first temperature and a first layer (38) of a second material having a softening point temperature less than the first temperature. The first temperature may be at least 150 degrees C or higher. By providing a first layer (36) having a higher softening point material, shorting across the conductors (32, 34), that can be promoted by the fabrication process, is prevented. Methods of fabricating passive electrical devices are also disclosed.