Patent ID: 9110357
Filing Date: 2015-08-18
Classification: G02B,G03B,H04N

Abstract:
1. A display element, comprising: a light valve section having a plurality of optical shutter means that switch between a transmitting state and a shading state of light emitted from a light emitting element; and a substrate through which light that exits said plurality of optical shutter means is transmitted; and a plasmon coupling section that is mounted on said substrate and arranged in said light valve section, and that causes plasmon coupling to occur with light that exits said light emitting element, wherein said plasmon coupling section includes: a carrier generation layer that is arranged on an incident-side of said plasmon coupling section and that generates carriers with light that exits said light emitting element, and a plasmon excitation layer that is arranged on the substrate-side of said plasmon coupling section and stacked above said carrier generation layer, and that has a higher plasma frequency than the frequency of light that is generated in said carrier generation layer excited with the light emitted from said light emitting element, wherein an exit layer is arranged on said substrate or between said substrate and said plasmon excitation layer so as to convert the light or surface plasmons generated in said plasmon excitation layer into light having a predetermined exit angle, and wherein said plasmon excitation layer is sandwiched between two layers having dielectric constants.