Patent ID: 8675146

Claim:
A display structure comprising: a liquid crystal module; a first light guide layer arranged on a first surface of the liquid crystal module and configured to transmit light therein; at least one first light-emitting device arranged at an edge of one end portion of the first light guide layer and configured to emit light into the first light guide layer; and a first transmittance-controllable layer arranged on a surface of the first light guide layer opposing the liquid crystal module, the first transmittance-controllable layer having light transmittance characteristics which change depending on an external stimulus applied thereto; a second light guide layer arranged on a second surface opposing the first surface of the liquid crystal module; at least one second light-emitting device arranged at an edge of one end portion of the second light guide layer and configured to emit light into the second light guide layer; and a second transmittance-controllable layer arranged on a surface of the second light guide layer opposing the liquid crystal module, wherein the first transmittance-controllable layer is configured to have a first light transmittance which allows external light to pass therethrough by a first stimulus and to have a second light transmittance which reflects the light emitted by the at least one first light-emitting device thereon by a second stimulus, and wherein the second transmittance-controllable layer is further configured to have the first light transmittance which allows external light to pass therethrough by the first stimulus and to have the second light transmittance which reflects the light emitted by the at least one second light-emitting device thereon by the second stimulus.