Abstract: A semiconductor memory device including a substrate; a mold structure including gate electrodes and mold insulating layers stacked in a stair shape, channel structures on the substrate, intersecting the gate electrodes, and passing through the mold structure; cell contacts connected to the gate electrodes; a first interlayer insulating layer on the mold structure and covering the channel structures and cell contacts; first metal patterns connected to the channel structures, an upper surface of the first metal patterns being coplanar with an upper surface of the first interlayer insulating layer; second metal patterns connected to the cell contacts, an upper surface of the second metal patterns being coplanar with the upper surface of the first metal patterns; a first blocking layer along the upper surface of the first interlayer insulating layer, the first metal patterns, and the second metal patterns; and a first dummy vias passing through the first blocking layer.

Abstract: A semiconductor memory device comprising a substrate including a cell array area and an extension area, a mold structure including, a plurality of gate electrodes sequentially stacked on the cell array area of the substrate and stacked in a stair shape on the extension area of the substrate, and a plurality of mold insulating films stacked alternately with the plurality of gate electrodes, a plurality of channel structures on the cell array area of the substrate, wherein each of the plurality of channel structures extends through the mold structure and intersects the plurality of gate electrodes, a plurality of cell contacts on the extension area of the substrate and respectively connected to the plurality of gate electrodes, a first interlayer insulating film on the mold structure so as to cover the plurality of channel structures and the plurality of cell contacts.

Abstract: A battery cell cartridge in which a battery cell is accommodated, includes first, second, third and fourth frames formed in a quadrangular shape, wherein the first frame and the second frame extend along a horizontal direction and are spaced from each other at a predetermined interval therebetween, the first frame is positioned on an upper side and the second frame is positioned on a lower side, the third frame and the fourth frame extend along a vertical direction and are spaced from each other at a predetermined interval therebetween, and the third frame is positioned on a first side and the third frame is positioned on a second side opposite to the second frame.

Abstract: The present invention relates to a carbon dioxide measuring device, and more particularly, to a carbon dioxide measuring device in which a reference electrode signal transfer pattern is formed on one side of a heating unit to connect an electromotive lead wire for measuring carbon dioxide concentration to the outside of a portion at which the heating unit contacts a carbon dioxide sensor to thereby prevent generation of a gap, and a problem that a sealant is diffused into the reference electrode to have an effect on electromotive force is prevented to thereby increase durability and accuracy and also increase reliability of measurement of carbon dioxide concentration.