摘要:
Disclosed is a battery having a heat sensor, and more particularly a battery having an irreversible heat senor capable of indicating temperature variation of two or more levels, or three or more levels if necessary.
摘要:
The present invention relates to a low-odor thermoplastic resin composition. In particular the resin of the resin composition is prepared by a new bulk polymerization process that is used to reduce the characteristic chemical odor in new cars. The resin minimizes the use of the resin prepared by the conventional emulsion polymerization process, N-substituted maleimide and α-alkylstyrene-based heat-resistant materials which are used to improve heat resistance and the molecular weight of the matrix of the thermoplastic composition. The resin is also improves impact strength, thereby having reduced characteristic chemical odor, while having superior impact strength and heat resistance.
摘要:
Semiconductor devices having a via hole and methods for forming a via hole in a semiconductor device are disclosed. A disclosed method comprises performing a first etching process on an insulating layer to form a via hole, and performing a second etching process to enlarge a bottom of the via hole.
摘要:
The present invention is related to a chromatic aberration-correcting element which allows the adoption of BDs even when DVD/CD light beams are incident. The chromatic aberration-correcting element has a diffractive structure formed thereon, which can correct chromatic aberration in BD wavelength light beams in addition to adopting DVD/CD wavelength light beams. Also provided is an optical pickup device whose structure is simplified by employing the chromatic aberration-correcting element.