摘要:
Provided is a method of fabricating a recess transistor in an integrated circuit device. In the provided method, a device isolation region, which contacts to the sidewall of a gate trench and a substrate region remaining between the sidewall of the device isolation region and the sidewall of the gate trench, is etched to expose the remaining substrate region. Thereafter, the exposed portion of the remaining substrate region is removed to form a substantially flat bottom of the gate trench. The recess transistor manufactured by the provided method has the same channel length regardless of the locations of the recess transistor in an active region.
摘要:
A transistor includes a substrate and an isolation region disposed in the substrate. The isolation regions defines an active region comprising upper and lower active regions, the upper active region having a first width and the lower active region having a second width greater than the first width. An insulated gate electrode extends through the upper active region and into the lower active region. Source and drain regions are disposed in the active region on respective first and second sides of the insulated gate electrode. The insulated gate electrode may include an upper gate electrode disposed in the upper active region and a lower gate electrode disposed in the lower active region, wherein the lower gate electrode is wider than the upper gate electrode. Related fabrication methods are described.
摘要:
A semiconductor device includes a plurality of gate trenches, each of which has first inner walls, which face each other in a first direction which is perpendicular to a second direction in which active regions extend, and second inner walls, which face each other in the second direction in which the active regions extends. An isolation layer contacts a gate insulating layer throughout the entire length of the first inner walls of the gate trenches including from entrance portions of the gate trenches to bottom portions of the gate trenches, and a plurality of channel regions are disposed adjacent to the gate insulating layers in the semiconductor substrate along the second inner walls and the bottom portions of the gate trenches.
摘要:
Embodiments of the invention include sequentially forming a pad oxide film and a mask film on a semiconductor substrate, and then forming an opening for partially exposing the pad oxide film. An undercut region is formed using the mask film as an etch mask, exposing a partial surface of the substrate. A spacer is formed surrounding both sidewalls of the mask film, and a recess is formed in the substrate. A gate oxide film, a gate electrode, a gate insulation film, a gate spacer, and source and drain regions are also formed. A resultant transistor structure has a small open critical dimension that improves process margin and provides uniformity to the recess depth, and removes a requirement that a bottom critical dimension of a subsequently formed self-aligned contact should be small. Degradation of the gate oxide film and increases in leakage current may also be prevented.
摘要:
Disclosed is a method for creating a user-customized menu in a portable radio telephone having a menu table in which service menus for a user are stored in association with corresponding indexes. The method comprising the steps of: upon receipt of a user-customized menu creating key, switching an operating mode of the portable radio telephone to a user-customized menu creating mode; receiving a user-customized menu index in the user-customized menu creating mode; after receiving the user-customized menu index, receiving a menu index to be set as menu contents in the user-customized menu index; and after receiving the menu index, storing the menu index in association with the user-customized menu index.
摘要:
The present invention relates to a dry type tooth-whitening patch comprising peroxide as a tooth whitening agent. In particular, disclosed is a dry type tooth-whitening patch in which peroxide is contained, as a teeth whitening agent, in a matrix type adhesive layer. The adhesive layer includes, as a base polymer thereof, a hydrophilic glass polymer, which provides a strong adhesion to teeth while releasing the tooth whitening agent when hydrated on the enamel layers of teeth in the moist oral cavity. The dry type patch according to the present invention is convenient in use, as compared to wet type patches. Further, it exhibits a superior adhesion while being maintained in a state attached to the teeth for a lengthened period of time so as to assure an enough contact time between the whitening agent in the patch and stains on the teeth, thereby giving a sufficient whitening effect.
摘要:
Disclosed herein is a pair of dry type patches for teeth whitening, having a patch for upper teeth and a patch for lower teeth, in which the patch for upper teeth has a shape different from the patch for lower teeth, and each patch has a controlled width and shape such that the contact area of each patch with gums is minimized. In the patch for upper teeth, a central portion covering right and left upper central incisors is widest. In the patch for lower teeth, either portion covering right and left lower canine teeth is widest. Since the dry type patches covers all the portions of the teeth while minimizing the contact area with gums, no or little irritation is caused and wearability is excellent.
摘要:
A memory cell of a semiconductor device and a method for forming the same, wherein the memory cell includes a substrate having active regions and field regions, a gate layer formed over the substrate, the gate layer including a plurality of access gates formed over the active regions of the substrate and a plurality of pass gates formed over the field regions of the substrate, first self-aligned contact regions formed between adjacent pass gates and access gates, and second self-aligned contact regions formed between adjacent access gates, wherein a width of each of the first self-aligned contact regions is larger than a width of each of the second self-aligned contact regions.
摘要:
In a method of manufacturing a buried channel type transistor, a trench is formed at a surface portion of a substrate. A first and a second threshold voltage control regions are formed at portions of the substrate beneath a bottom face of the trench and adjacent to a sidewall of the trench, respectively. A gate electrode filling the trench is formed. Source/drain regions are formed at portions of the substrate adjacent to the sidewall of the gate electrode. Stopper regions are formed at portions of the substrate beneath the source/drain regions and beneath the first and second threshold voltage control regions, respectively. The buried channel type transistor has a high breakdown voltage between the source/drain regions although a threshold voltage thereof is low.
摘要:
Compounds of formula I and methods for their preparation are disclosed. Further disclosed are methods of making biologically active compounds of formula I as well as pharmaceutically acceptable compositions comprising compounds of formula I. Compounds of formula I as disclosed herein can be used in a variety of applications including use as antibacterial agents.