# US 8,520,289 B2 · Display element comprising a reflector > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,520,289 B2 - Document ID: US8520289B2 - Status: Granted - Kind: B2 - Application number: 12/612,758 - Filed: 2009-11-05 - Published: 2010-05-20 - Granted: 2013-08-27 - Earliest claimed: 2008-11-18 - Assignees: Advanced Display Technology AG - Applicants: Oliver Mueller-Marc; Andriy Bitman - Inventors: Oliver Mueller-Marc; Andriy Bitman - Web page: https://patentgrep.com/patent/US8520289B2 ## CPC - G09F 9/372: {the positions of the elements being controlled by the application of an electric field} - G09F 19/16: involving the use of mirrors - G02B 26/004: {based on a displacement or a deformation of a fluid} - G02B 26/0833: {the reflecting element being a micromechanical device, e.g. a MEMS mirror, DMD (G02B26/0825 takes precedence; micromechanical devices in general B81B)} - G09F: DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS ## Abstract The invention relates to a display element for the display of a plurality of a colors and a method for their display. For this purpose, the invention teaches a display element 1 based on one or more color-producing surfaces 2 which can be oriented parallel to the viewing direction 3 of an observer, for example, so that the observer views only the narrow edges of the surfaces 2. The actual content is perceptible only because a movable reflector 4 is also provided in which the color-producing surface 2 is reflected. The display element claimed by the invention has a particularly good aperture. In the case of static images, the power consumption of the display element is very low. In one preferred embodiment, the display element also makes possible the presentation of a large color space and can be independent of the presence of ambient light. ## Claims ### Claim 1 Display element (1) for the display of at least one color, whereby each display element comprises a color-producing surface (2) colored with a corresponding color and at least one movable reflector (4), characterized in that the color-producing surface (2) is oriented parallel to or is inclined with respect to a viewing direction (3), that the at least one reflector (4) can be moved such that a variable portion of the color-producing surface (2) is visible from the viewing direction (3), and that the reflector (4) is realized in the form of solid, liquid or gas mirrors. ### Claim 2 (depends on 1) Display element (1) as recited in claim 1, characterized in that it comprises a plurality of color-producing surfaces (2), and that the at least one reflector (4) can be moved such that any desired portions of any color-producing surface (2) and/or any desired portions of a plurality of different color-producing surfaces (2) are visible. ### Claim 3 (depends on 1) Display element (1) as recited in claim 1, characterized in that the at least one reflector (4) has at least one axis of movement, whereby a first axis of movement runs perpendicular to the viewing direction (3). ### Claim 4 (depends on 3) Display element (1) as recited in claim 3, characterized in that a second axis of movement of the reflector (4) either runs perpendicular to the first axis of movement or can be rotated in an axis that points in the viewing direction (3). ### Claim 5 (depends on 1) Display element (1) as recited in claim 1, characterized in that it also comprises at least one drive system for the at least one reflector (4), which is preferably selected from the group comprising electric motors, electrostatic drives, fluid drives and electrowetting. ### Claim 6 (depends on 1) Display element (1) as recited in claim 1, characterized in that the reflector (4) is realized in the form of a solid amorphous or crystal or metal mirror. ### Claim 7 (depends on 1) Display element (1) as recited in claim 1, characterized in that the reflector (4) is realized in the form of a reflecting surface of a fluid. ### Claim 8 (depends on 7) Display element (1) as recited in claim 7, characterized in that the curvature of the surface of the fluid can be influenced so that a plurality of individual reflectors are formed. ### Claim 9 (depends on 1) Display element (1) as recited in claim 1, characterized in that the color-producing surfaces (22) are luminescent and/or are variable in terms of their luminous intensity and/or their color. ### Claim 10 (depends on 1) Display element (1) as recited in claim 1, characterized in that the color-producing surfaces (2) are arranged in the shape of a regular polygon. ### Claim 11 (depends on 1) Display element (1) as recited in claim 1, characterized in that the color-producing surfaces (2) are arranged in the shape of a ring. ### Claim 12 (depends on 1) Display element as recited in claim 1, characterized in that a divergent lens is located downstream of the reflector (4).