Wavelength tunable liquid crystal etalon filter including double seal line and manufacturing method of the same
OwnerJang Kun Songinventor
Life of this patent
Estimating the term…
Abstract
A wavelength-tunable etalon includes a pair of substrates, each comprising a reflection layer, an electrode, and an alignment layer on opposing surfaces of the pair of substrates; a first seal line configured to seal liquid crystal between the pair of substrates; and a second seal line configured to divide a space in which the liquid crystal is sealed into a main liquid crystal accommodating space configured to pass laser and a sub-liquid crystal accommodating space provided external of the main liquid crystal accommodating space. The first seal line comprises a sub inlet configured to fluidly communicate the main liquid crystal accommodating space with the sub-liquid crystal accommodating space.
Claims20
A wavelength-tunable etalon, comprising:
- a pair of substrates, each comprising a reflection layer, an electrode, and an alignment layer on opposing surfaces of the pair of substrates;
- a first seal line configured to seal liquid crystal between the pair of substrates;
- and
- a second seal line configured to divide a space in which the liquid crystal is sealed into a main liquid crystal accommodating space configured to pass laser and a sub-liquid crystal accommodating space provided external of the main liquid crystal accommodating space, wherein the second seal line comprises a sub inlet configured to fluidly communicate the main liquid crystal accommodating space with the sub-liquid crystal accommodating space, wherein even though the liquid crystal is injected, residual air or vacuum is located concentratedly at an outermost edge of the sub-liquid crystal accommodating space, and wherein an interval between the first seal line and the second seal line is larger in a space where the residual air or vacuum is located than in another space.
A manufacturing method of a wavelength-tunable etalon, comprising:
- generating a reflection layer, an electrode, and an alignment layer on a surface of a first substrate and a surface of a second substrate;
- applying a first seal line on the surface of the first substrate along a boundary of a sub-liquid crystal accommodating space excluding a main inlet;
- applying a second seal line on the surface of the first substrate along a boundary of a main liquid crystal accommodating space and the sub-liquid crystal accommodating space excluding a sub inlet within a boundary of the first seal line;
- generating a substrate assembly by aligning the second substrate and the first substrate;
- sequentially injecting liquid crystal through the main inlet into the main liquid crystal accommodating space and the sub-liquid crystal accommodating space;
- and
- sealing the main inlet, wherein even though the liquid crystal is injected, residual air or vacuum is located concentratedly at an outermost edge of the sub-liquid crystal accommodating space, and wherein an interval between the first seal line and the second seal line is larger in a space where the residual air or vacuum is located than in another space.
Dependencies are inferred from the claim text.