Abstract: A device includes a gate stack having a top portion, and a stacked structure underlying the top portion of the gate stack. The stacked structure includes a plurality of semiconductor nanostructures, with upper nanostructures in the plurality of semiconductor nanostructures overlapping respective lower nanostructures. The stacked structure further includes a plurality of gate structures, each including a lower portion of the gate stack. Each of the plurality of gate structures is between two of the plurality of semiconductor nanostructures. A dielectric layer extends on a top surface and a sidewall of the stacked structure. The dielectric layer includes a lower sub layer comprising a first dielectric material, and an upper sub layer over the lower sub layer and formed of a second dielectric material different from the first dielectric material. A gate spacer is on the dielectric layer. A source/drain region is aside of the gate stack.

Abstract: A single panel reflective-type color optical engine makes use of a grating matched with a reflecting mirror set for adjusting the traveling directions of three primary color lights or at least a beam-splitting rotating disk and a reflecting mirror to split an incident light into the three primary color lights and separately adjusts their reflected directions and orders, or makes use of three reflecting mirrors with continually varying angles to reflect three primary color lights to adjust their reflected directions and orders, thereby simultaneously projecting the three primary color lights onto different regions of a single panel in the red-green-blue, green-blue-red, and then blue-red-green order. The single panel reflective-type color optical engine can apply to LCOS and DLP reflective-type projection systems, and has the advantages of high brightness, good uniformity, small size, and low price.

Abstract: Disclosed is preservation structure and preservation repository using the same. The preservation structure is constituted by a porous two-dimensional or three-dimensional solid structure with a slackness nature and a variety of nano-materials being uniformly distributed over the surface of the porous two-dimensional or three-dimensional solid structure, and is used to preserve an article therein over a long period of time. The freshness of the article is retained by making a direct contact between the nano-materials and the article. The usage of term or the period of preservation for the article is prolonged by placing the article needing to be preserved in the preservation repository.

Abstract: A reflective type beam splitting and combining device comprises a cubic prism set and three light valves. A first dielectric thin film and a second dielectric thin film are formed on diagonal tangential planes of two sets of opposed surfaces of the prism set so that the prism set can reflect or transmit two light beams of the three primary colors incident from two incidence faces, respectively. The three light valves are arranged on three adjacent surfaces of the prism set to let every two of them be adjacent to each other. The three light valves are used for modulating the three primary colors transmitted or reflected by the prism set. Finally, the three primary color lights are assembled into an output light beam by the prism set. The above optical structure can effectively shorten the back focus to shrink the size and reduce the difficulty in manufacturing.

Abstract: A reflective type light valve projection device comprises an incident light source, a first and a second dichroic beam splitters/combiners, three light valves of the three primary colors and a projection lens. The light source provides a white light. The first dichroic beam splitter/combiner can reflect the first primary color and transmit the other two primary colors, and the second dichroic beam splitter/combiner can respectively reflect and transmit the two primary colors passing through the first dichroic beam splitter/combiner, hence completely separating the three primary colors. After the three primary colors are respectively modulated and reflected by the three light valves, they are combined by the first and second dichroic beam splitters/combiners to form a full color image, which is finally projected out by the projection lens. The optimum full-color projection effect can thus be accomplished with the least component.

Abstract: A reflective type light valve projection device comprises an incident light source, a first and a second dichroic beam splitters/combiners, three light valves of the three primary colors and a projection lens. The light source provides a white light. The first dichroic beam splitter/combiner can reflect the first primary color and transmit the other two primary colors, and the second dichroic beam splitter/combiner can respectively reflect and transmit the two primary colors passing through the first dichroic beam splitter/combiner, hence completely separating the three primary colors. After the three primary colors are respectively modulated and reflected by the three light valves, they are combined by the first and second dichroic beam splitters/combiners to form a full color image, which is finally projected out by the projection lens. The optimum full-color projection effect can thus be accomplished with the least component.