摘要:
Provided is a device including a substrate and an overlay target structure provided on the substrate, the overlay target structure includes a first alignment key having a plurality of line masks having a first width and arranged at a first pitch, a second alignment key having a plurality of line masks having a second width and arranged at a second pitch, and a nanostructure layer arranged between the first alignment key and the second alignment key, and including a plurality of nanostructures having widths less than or equal to the first width and the second width, and arranged at a pitch less than the first pitch and the second pitch.
摘要:
According to example embodiments, an apparatus for etching a two-dimensional material layer includes a stage configured to support an etching target including graphene on the stage, a light source configured to emit light having a wavelength that is shorter than a wavelength of visible light, a mask imprinted with a pattern for transferred onto the etching target, a fluid inlet configured to supply a fluid over the etching target, and a fluid outlet configured to absorb a residue and a reaction product after the fluid is supplied over the etching target using the fluid inlet.
摘要:
An optical device forms a refractive index distribution for exhibiting a certain phase delay profile with respect to light in a visible light wavelength, and includes a nanopattern layer including a crystalline compound having a refractive index greater than 3 with respect to the light in the visible light wavelength band and a height equal to or less than 2 μm. The nanopattern layer may include the crystalline compound grown according to a selective epitaxial growth method, and accordingly, may have a height beneficial for a manufacturing process. Thus, the efficiency of the optical device may be improved.
摘要:
Provided are a pattern structure for preventing a moiré pattern from becoming visible, and a display apparatus using the same. The pattern structure includes a first element pattern including a plurality of first elements arranged regularly at a first pitch; a second element pattern including a plurality of second elements arranged regularly at a second pitch, the second element pattern being provided on the first element pattern; and a filling layer configured to fill gaps among the plurality of second elements, between adjacent ones thereof. A difference between transmittances of the second element and the filling layer is about 5% or less and thus, a moiré pattern occurring due to the overlapping of the first element pattern and the second element pattern may be prevented from becoming visible.