Abstract:
A stretchable wire assembly includes a metal wire coupled between two elastic substrates. The two elastic substrates are selectively coupled together, and the metal wire is attached to one or both elastic substrates at select locations. The form of the metal wire is such that when the elastic substrates are in a relaxed, or non-stretched, state the metal wire forms a tortuous path, such as a waveform, along the coupled elastic substrates. The tortuous path of the metal wire provides slack such that as the elastic substrates are stretched the slack is taken up. Once released, the elastic substrates move from the stretched position to the relaxed, non-stretched position, and slack is reintroduced into the metal wire in the form of the original tortuous path.
Abstract:
A flexible circuit board includes a center “rigid” section, such as a printed circuit stack, and an adjoining flexible multi-layer body that are fabricated from a common interconnect layer. A transition material is included at the interface between the center rigid section and the flexible multi-layer body to minimize ripping and cracking of the interconnect layer. The transition material can also be added at stress areas not related to the interface. The transition material is attached at the interface and stress areas of the flexible circuit board in order to strengthen the flexible circuit board in general and in particular the transition material included therein. The transition material layer is formed and deposited at one or more locations on or within the flexible circuit board in order to minimize, reduce, if not prevent cracking and ripping of the flexible circuit board as it is bent, flexed and/or twisted.
Abstract:
A waterproof structure for an implanted electronic device is capable of preventing the liquid or moist from entering and damaging the circuit board of the electronic device. The waterproof structure includes a shell, a first material layer, a second material layer, and a third material layer. The first material layer covers at least a part of the implanted electronic device. The second material layer covers the first material layer. The internal space of the shell is configured for accommodating the implanted electronic device. The shell is made of PEEK (polyether ether ketone). The third material layer is disposed between the second material layer and the shell.
Abstract:
This display includes a light source portion, a first heat radiation member for radiating heat generated by the light source portion, a rear housing covering the first heat radiation member in a state in contact with the first heat radiation member, and a cover member covering a rear surface of the rear housing so that the rear surface of the rear housing is partially exposed outward. The first heat radiation member is arranged on a region corresponding to a region of the rear housing exposed outward from the cover member as viewed from the side of the rear surface.
Abstract:
An electronic device includes a semiconductor substrate, an electronic element mounted on the substrate, a conductive layer electrically connected to the electronic element, a sealing resin and a columnar conductor. The substrate has a recess formed in its obverse surface. The electronic element is mounted on the bottom surface of the recess. The conductive layer has an obverse-surface contacting region located on the obverse surface of the substrate. The sealing resin is disposed in at least a part of the recess for covering at least a part of the obverse surface of the substrate. The columnar conductor is electrically connected to the obverse-surface contacting region of the conductive layer and exposed from the sealing resin at a side opposite to the obverse surface of the substrate.
Abstract:
Method for pore sealing a porous substrate, comprising: forming a continuous monolayer of a polyimide precursor on a liquid surface, transferring said polyimide precursor monolayer onto the porous substrate with the Langmuir-Blodgett technique, and imidization of the transferred polyimide precursor monolayers, thereby forming a polyimide sealing layer on the porous substrate. Porous substrate having at least one surface on which a sealing layer is provided to seal pores of the substrate, wherein the sealing layer is a polyimide having a thickness of a few monolayers and wherein there is no penetration of the polyimide into the pores.
Abstract:
The present invention proposes substrate material favoring via hole electroplating to overcome the conventional problem that the polymer-based printed circuit board is hard to conduct electricity and likely to have poor electroplating quality. The present invention adds a conductive material to a polymeric material and controls the proportions and structure thereof to form a substrate material so as to improve the affinity of the substrate material to the metal electroplated inside the via hole with the resistance of the substrate material remaining in an allowable range. Thereby is increased yield and efficiency and saved time and cost in fabricating printed circuit boards. Further, the present invention reduces the proportion of the polymeric material with the mechanical strength remaining in an allowable range so as to decrease the overall expansion rate and obtain a fire-proof effect. Therefore, the substrate material can be used to fabricate precision products.
Abstract:
A ultra low loss dielectric thermosetting resin composition has at least one cyanate ester component (A) and at least one reactive intermediate component (B) that is capable of copolymerization with said component (A). The invention is a cyanate ester resin of the form: Tn-[W—(Z)f/(H)1-f—W]n−1—[W—(Z)f/(H)1-f—(OCN)f/(R)1-f]n+2, wherein T is a 1,3,5-substituted-triazine moiety (C3N3); W is a linking atom between triazine and either component A or component B; Z is component (A): H is component (B); OCN is a cyanate ester end group; R is a reactive end group of component B; n is an integer greater than or equal to 1; and f is a weight or mole fraction of component A. The composition exhibits excellent dielectric properties and yields a high performance laminate for use in high layer count, multilayer printed circuit board (PCB), prepregs, resin coated copper (RCC), film adhesives, high frequency radomes, radio frequency (RF) laminates and various composites.
Abstract:
This display includes a light source portion, a first heat radiation member for radiating heat generated by the light source portion, a rear housing covering the first heat radiation member in a state in contact with the first heat radiation member, and a cover member covering a rear surface of the rear housing so that the rear surface of the rear housing is partially exposed outward. The first heat radiation member is arranged on a region corresponding to a region of the rear housing exposed outward from the cover member as viewed from the side of the rear surface.
Abstract:
A flexible printed circuit board (PCB) has stretchability and durability. The flexible PCB includes: a first polymer substrate having flexibility, stretchability, or elasticity; a second polymer substrate having flexibility, stretchability, or elasticity; a conductive track disposed between the first and second polymer substrates and including metal nanowires; and a cured silane coupling agent which bonds the conductive track to at least one of the first and second polymer substrates.