Abstract:
The present invention relates to a liquid-crystalline medium, characterised in that it contains a polymerisable component (A) containing one more polymerisable compounds and a liquid-crystalline component (B) containing one more compounds of the general formula I in which R, rings A1 and A2, Z1, Z2, Y1, Y2, X0 and r are as defined in Claim 1.
Abstract:
Disclosed are compounds represented by formula (1), wherein m, X, R1, R2, R3, R1′, R2′, R3′, and Ar are described herein. The inventive cyclopentadienone compounds can be used as core materials for an organic electroluminescence element or other optical devices. The invention also describes methods for preparing compounds of formula (1).
Abstract:
A method of manufacturing a circuit board embedding a thin film capacitor, the method including: forming a sacrificial layer on a first substrate; forming a dielectric layer on the sacrificial layer; forming a first electrode layer on the dielectric layer; disposing the first substrate on the second substrate in such a way that the first electrode layer is bonded to a top of a second substrate; decomposing the sacrificial layer by irradiating a laser beam onto the sacrificial layer through the first substrate; separating the first substrate from the second substrate; and forming a second electrode layer on the dielectric layer.
Abstract:
A photonic quantum ring (PQR) laser includes an active layer having a multi-quantum-well (MQW) structure and etched lateral face. The active layer is formed to be sandwitched between p-GaN and n-GaN layers epitaxially grown on a reflector disposed over a support substrate. A coating layer is formed over an outside of the lateral faces of the active layer, an upper electrode is electrically connected to an upper portion of the n-GaN layer, and a distributed Bragg reflector (DBR) is formed over the n-GaN layer and the upper electrode. Accordingly, the PQR laser is capable of oscillating a power-saving vertically dominant 3D multi-mode laser suitable for a low power display device, prevent the light speckle phenomenon, and generate focus-adjusted 3D soft light.
Abstract:
Disclosed are an embedded capacitor and a printed circuit board including the same that can minimize the oxidization of a metal layer. A thin-film capacitor can include a first metal electrode film; a barrier layer, formed on the first metal electrode film to include a conductive oxide; a dielectric film, formed on the barrier layer; and a second metal electrode film, formed on the dielectric film. With the present invention, the outstanding characteristic of a ferroelectric thin film can be provided by minimizing the oxidization of a copper film in the heat treatment after forming the ferroelectric thin film on the copper film.
Abstract:
A method for manufacturing a capacitor embedded in a PCB includes: preparing a copper clad lamination (CCL) substrate having a reinforcement member and copper foils formed on both surfaces of the reinforcement member; planarizing surfaces of the copper foils of the CCL substrate; forming a dielectric layer on the planarized surface of the copper foils; and forming a top electrode on the dielectric layer.
Abstract:
The invention relates to a liquid-crystalline medium based on a mixture of polar compounds having negative dielectric anisotropy, which contains at least one compound of formula I wherein R1 and R2 are independently of each other an alkyl, alkoxy or alkenyl group with 1 to 12 C atoms, it also being possible for one or more CH2 groups in these radicals to be replaced, in each case independently of one another, by —O—, —CH═CH—, —CO—, —OCO— or —COO— in such a manner that oxygen atoms are not linked directly to one another, Z is OCH2 or CH2O, and m is 0 or 1.
Abstract:
Disclosed herein are an embedded ball grid array substrate and a manufacturing method thereof. The embedded ball grid array includes: a core layer having a cavity therein; a semiconductor device embedded in the cavity of the core layer; a first circuit layer having a circuit pattern including a wire bonding pad formed thereon; a second circuit layer having a circuit pattern including a solder ball pattern formed thereon; and a wire electrically connecting the semiconductor device to the wire bonding pad.
Abstract:
Methods and apparatus to provide for power consumption reduction in memories (such as cache memories) are described. In one embodiment, a virtual tag is used to determine whether to access a cache way. The virtual tag access and comparison may be performed earlier in the read pipeline than the actual tag access or comparison. In another embodiment, a speculative way hit may be used based on pre-ECC partial tag match to wake up a subset of data arrays. Other embodiments are also described.
Abstract:
The present invention relates to a liquid crystal panel, a liquid crystal display device and to a liquid crystal medium having a negative dielectric anisotropy Δ∈.