# US 2013/0278485 A1 · Glasses-type display > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2013/0278485 A1 - Document ID: US20130278485A1 - Status: Published application - Kind: A1 - Application number: 13/711,998 - Filed: 2012-12-12 - Published: 2013-10-24 - Earliest claimed: 2012-04-18 - Assignees: Samsung Electronics Co., Ltd. - Applicants: Samsung Electronics Co., Ltd. - Inventors: Jung-woo KIM; Young-jun YUN; Myoung-hoon JUNG - Web page: https://patentgrep.com/patent/US20130278485A1 ## CPC - G09G 3/36: using liquid crystals - G02B 1/005: {made of photonic crystals or photonic band gap materials (photonic band-gap structures or photonic lattices in integrated optics G02B6/1225; photonic band-gap structures or photonic lattices in optical fibres G02B6/02295)} - G02B 5/201: {in the form of arrays} - G02B 5/206: {comprising particles embedded in a solid matrix} - G02B 5/26: Reflecting filters (G02B5/28 takes precedence) - G02B 26/001: {based on interference in an adjustable optical cavity (interference filters G02B5/28; devices or arrangements using multiple reflections in spectrometry or monochromators G01J3/26)} - G02B 27/017: {Head mounted} - G02B 2027/0112: {comprising device for genereting colour display} - G02B 2027/0178: {Eyeglass type (eyeglass details G02C)} - G09G 3/344: {based on particles moving in a fluid or in a gas, e.g. electrophoretic devices (electrophoretic devices per se G02F1/167)} - G09G: ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION (arrangements for transferring data between digital computers and displays G06F3/14; static indicating arrangements comprising an association of a number of separate sources or light control cells G09F9/00; static indicating arrangements comprising integral associations of a number of light sources H01J, H01K, H10H, H05B33/12; scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission, details thereof H04N1/00) - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS ## Abstract A glasses-type display includes: a lens unit configured to selectively reflect light of different wavelength bands, the lens unit including a plurality of photonic crystal pattern units, each of the plurality of photonic crystal pattern units including pixels; a leg unit coupled to the lens unit; and an image supply unit configured to supply an image to the lens unit. ## Claims ### Claim 1 A glasses-type display comprising: a lens unit configured to selectively reflect light of different wavelength bands, the lens unit including a plurality of photonic crystal pattern units, each of the plurality of photonic crystal pattern units including pixels; a leg unit coupled to the lens unit; and an image supply unit configured to supply an image to the lens unit. ### Claim 2 (depends on 1) The glasses-type display of claim 1, wherein the pixels include layers having different refractive indices which are alternately stacked. ### Claim 3 (depends on 1) The glasses-type display of claim 1, wherein each of the pixels of the plurality of photonic crystal pattern units comprise: a first electrode; a second electrode facing the first electrode; a medium between the first electrode and the second electrode; and charged nanoparticles dispersed in the medium in a lattice pattern. ### Claim 4 (depends on 3) The glasses-type display of claim 3, wherein the plurality of photonic crystal pattern units comprise wiring lines connected to the first electrode and the second electrode of the pixels. ### Claim 5 (depends on 3) The glasses-type display of claim 3, wherein the first electrode and the second electrode are transparent electrodes. ### Claim 6 (depends on 3) The glasses-type display of claim 3, wherein a voltage or current is independently applied to each of the plurality of photonic crystal pattern units. ### Claim 7 (depends on 3) The glasses-type display of claim 3, wherein a spectrum of light reflected from each of the plurality of photonic crystal pattern units is controlled by a control signal applied to each of the plurality of photonic crystal pattern units. ### Claim 8 (depends on 3) The glasses-type display of claim 3, wherein a wavelength of light reflected from each of the plurality of photonic crystal pattern units varies. ### Claim 9 (depends on 1) The glasses-type display of claim 1, wherein the plurality of photonic crystal pattern units comprise: a first photonic crystal pattern unit including first pixels configured to reflect light of a first wavelength band; a second photonic crystal pattern unit including second pixels configured to reflect light of a second wavelength band; and a third photonic crystal pattern unit including third pixels configured to reflect light of a third wavelength band. ### Claim 10 (depends on 1) The glasses-type display of claim 1, wherein the plurality of photonic crystal pattern units are formed by one of a lift-off method, a metal mask method, and a photolithography method. ### Claim 11 (depends on 3) The glasses-type display of claim 3, wherein a transmittance of each of the pixels varies according to at least one of a shape of the nanoparticles, a volume of the nanoparticles, an interval between the nanoparticles, and a refractive index of the nanoparticles. ### Claim 12 (depends on 1) The glasses-type display of claim 1, wherein the lens unit is configured to simultaneously display an image from the image supply unit and an external image. ### Claim 13 (depends on 12) The glasses-type display of claim 12, wherein the image supply unit and the external image are on opposite sides of the lens unit. ### Claim 14 (depends on 13) The glasses-type display of claim 13, wherein each of the pixels are configured to reflect the image from the image supply unit to a user's eyes and transmit the external image to the user's eyes. ### Claim 15 (depends on 14) The glasses-type display of claim 14, wherein the plurality of pixels includes a first set of pixels, a second set of pixels, and a third set of pixels, and the first set of pixels reflects red light and transmits blue and green light, the second set of pixels reflects blue light and transmits red and green light, and the third set of pixels reflects green light and transmits blue and red light. ### Claim 16 (depends on 15) The glasses-type display of claim 15, wherein each pixel in the first, second, and third pixel sets includes a plurality of layers having different refractive indices, and the layers having different refractive indices are alternately stacked. ### Claim 17 (depends on 1) The glasses-type display of claim 1, further comprising: at least one voltage supply unit configured to apply a voltage to the plurality of photonic crystal pattern units and vary a transmittance of the plurality of pixels. ### Claim 18 (depends on 17) The glasses-type display of claim 17, wherein the at least one voltage supply unit includes first, second, and third voltage supply units configured to selectively apply voltages to the plurality of photonic crystal pattern units according to a desired light transmittance of the pixels. ### Claim 19 (depends on 1) The glasses-type display of claim 1, wherein the image supply unit is a projector configured to project the image to the lens unit.