Patent ID: 8248573

Claim:
A multi-layer liquid crystal display element comprising a plurality of liquid crystal display elements stacked one over another, wherein each of the liquid crystal display elements includes: a first substrate having a first through hole formed to extend from one surface to another; a second substrate disposed opposite to the first substrate and having a second through hole formed opposite to the first through hole to extend from one surface to another, the second through hold having an area greater than that of the first through hole; a first electrode formed on either one of the first substrate or the second substrate; a second electrode formed on other of the first substrate or the second substrate; a seal material provided in the form of a frame extending along the peripheries of the first and second substrates to secure the first and second substrates with each other; a liquid crystal sandwiched between the first and second substrates; and an enclosing material sealing the first and second through holes such that the liquid crystal does not leak through the first and second through holes, wherein the liquid crystal display elements disposed on two sides of the stack are disposed such that the first through holes thereof open to the exterior of the stack, and wherein either one of the liquid crystal display elements disposed on two sides of the stack has the first electrode formed on the first substrate and the second electrode formed on the second substrate, and other of the liquid crystal display elements disposed on two sides of the stack has the second electrode formed on the first substrate and the first electrode formed on the second substrate.