# US 2010/0165451 A1 · Optical deflector and optical deflecting board > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2010/0165451 A1 - Document ID: US20100165451A1 - Status: Published application - Kind: A1 - Application number: 12/477,891 - Filed: 2009-06-03 - Published: 2010-07-01 - Earliest claimed: 2008-12-31 - Assignees: Industrial Technology Research Institute - Inventors: Chang-Sheng Chu; Hsiu-Hsiang Chen; Yu-Tang Li; Chun-Chuan Lin; Chih-Hsun Fan - Web page: https://patentgrep.com/patent/US20100165451A1 ## CPC - G02B 26/0875: {by means of one or more refracting elements} - G02B 19/0009: {having refractive surfaces only} - G02B 19/0014: {at least one surface having optical power} - G02B 19/0028: {refractive and reflective surfaces, e.g. non-imaging catadioptric systems} - G02B 19/0038: {for use with ambient light (G02B19/009, G02B19/0095 take precedence)} - G02B 19/0042: {for use with direct solar radiation} - G02B 19/009: {for use with infrared radiation} - G02B 26/005: {based on electrowetting} - G02B 19/00: Condensers, {e.g. light collectors or similar non-imaging optics}(for microscopes G02B21/08) - G02B 26/004: {based on a displacement or a deformation of a fluid} - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS ## Abstract An optical deflector includes a substrate, an electrode layer on the substrate, an insulating layer at a predetermined peripheral region on the electrode layer, exposing the central region of the electrode layer. First electrode sandwiched wall is on the insulating layer. Second electrode sandwiched wall is on the insulating layer corresponding to the first electrode sandwiched wall. A pair of insulating walls is between the first electrode sandwiched wall and the second electrode sandwiched wall in enclosing to form an inner space. An outer wall encloses the pair of insulating layers, the first and the second electrode sandwiched walls at outside. A cap layer covers on the outer wall. A first liquid is filled into the inner space in contact with the electrode layer. A second liquid is filled into the inner spacer without solving to each other and forms a liquid interface. ## Claims ### Claim 1 An optical deflector, comprising: a substrate; an electrode layer, disposed on the substrate; an insulating layer, disposed on a predetermined peripheral region of the electrode layer, exposing a central region of the electrode layer; a first electrode sandwiched wall, disposed on the insulating layer; a second electrode sandwiched wall, disposed on the insulating layer, corresponding to the first electrode sandwiched wall, wherein an inner space is formed between the first electrode sandwiched wall and the second electrode sandwiched wall; an outer wall, enclosing the first and the second electrode sandwiched walls at outside; a cap layer, covering on the outer wall; a first liquid, filled into the inner space in contact with the electrode layer; and a second liquid, filled into the inner spacer without solving with the first liquid to each other and forms a liquid interface. ### Claim 2 (depends on 1) The optical deflector of claim 1, wherein the first electrode sandwiched wall comprises: a first inner insulating wall, on the insulating layer, extending upward; a first electrode wall, on the first inner insulating layer; and a first outer insulating wall, on the first electrode wall, wherein the first electrode wall is sandwiched between the first inner insulating wall and the first outer insulating wall; wherein the second electrode sandwiched wall comprises: a second inner insulating wall, on the insulating layer, extending upward; a second electrode wall, on the second inner insulating layer; and a second outer insulating wall, on the second electrode wall at an outer side, wherein the second electrode wall is sandwiched between the second inner insulating wall and the second outer insulating wall. ### Claim 3 (depends on 1) The optical deflector of claim 1, further comprising an insulating wall, coupled with the first electrode sandwiched wall and the second electrode sandwiched wall to form the inner space as a close space. ### Claim 4 (depends on 1) The optical deflector of claim 1, further comprising an insulating wall, coupled with the first electrode sandwiched wall and the second electrode sandwiched wall to form the inner space as an open space. ### Claim 5 (depends on 1) The optical deflector of claim 1, wherein the first liquid and the second liquid are water and oil. ### Claim 6 (depends on 1) The optical deflector of claim 1, wherein the electrode layer is used as a common electrode, coupled with the first electrode sandwiched wall and the second electrode sandwiched wall to produce a voltage bias, for controlling a tilting state of the liquid interface. ### Claim 7 (depends on 1) The optical deflector of claim 1, wherein the electrode layer has a reflection layer or the electrode layer is a metal layer, so as to have capability for reflecting light. ### Claim 8 (depends on 1) The optical deflector of claim 1, wherein the substrate, the electrode layer and the top cap layer are light transparent. ### Claim 9 An optical deflecting panel, comprising: a substrate; an electrode layer on the substrate; an insulating layer on the electrode layer, exposing a plurality of regions of the electrode layer; a plurality of first electrode sandwiched walls, disposed on the insulating layer; a plurality of second electrode sandwiched walls, disposed on the insulating layer, opposite to the first electrode sandwiched walls, respectively, to form a plurality of structural units, wherein a plurality of spaces is formed between the first electrode sandwiched walls and the second electrode sandwiched walls; an outer wall, disposed on the substrate, surrounding the structural units; a top cap layer, covering over the outer wall; a first liquid, filled in the inner space of each structural unit and contacts the electrode layer; and a second liquid, filled in the inner space of each structural unit and not solved in the first liquid to each other, so as to form a liquid interface. ### Claim 10 (depends on 9) The optical deflecting panel of claim 9, wherein the first electrode sandwiched wall comprises: a first inner insulating wall, on the insulating layer, extending upward; a first electrode wall, on the first inner insulating layer; and a first outer insulating wall, on the first electrode wall, wherein the first electrode wall is sandwiched between the first inner insulating wall and the first outer insulating wall; wherein the second electrode sandwiched wall comprises: a second inner insulating wall, on the insulating layer, extending upward; a second electrode wall, on the second inner insulating layer; and a second outer insulating wall, on the second electrode wall at an outer side, wherein the second electrode wall is sandwiched between the second inner insulating wall and the second outer insulating wall. ### Claim 11 (depends on 10) The optical deflecting panel of claim 10, wherein each of the structural units further includes an insulating wall, coupled with the first electrode sandwiched wall and the second electrode sandwiched wall to form the inner space as a close space, so that the liquids in each structure unit are separate. ### Claim 12 (depends on 10) The optical deflecting panel of claim 10, wherein each of the structural units further includes an insulating wall, coupled with the first electrode sandwiched wall and the second electrode sandwiched wall to form the inner space as an open space, extending to the outer wall. ### Claim 13 (depends on 10) The optical deflecting panel of claim 10, wherein the first liquid and the second liquid are water and oil. ### Claim 14 (depends on 10) The optical deflecting panel of claim 10, wherein in each structural unit, the electrode layer is used as a common electrode, coupled with the first electrode sandwiched wall and the second electrode sandwiched wall to produce a voltage bias, for controlling a tilting state of the liquid interface. ### Claim 15 (depends on 10) The optical deflecting panel of claim 10, wherein in each structural unit, the electrode layer has a reflection layer or the electrode layer is a metal layer, so as to have capability for reflecting light. ### Claim 16 (depends on 10) The optical deflecting panel of claim 10, wherein in each structural unit, the substrate, the electrode layer and the top cap layer are light transparent. ### Claim 17 (depends on 10) The optical deflecting panel of claim 10, receiving an incident light and allowing a portion of the incident light to transmit and be deflected. ### Claim 18 (depends on 10) The optical deflecting panel of claim 10, wherein a tilting state of the liquid interface for each structural unit is separately controlled. ### Claim 19 (depends on 10) The optical deflecting panel of claim 10, wherein a light inlet of each of the structural units for receiving the incident light is coated with IR reflection film, UV reflection film, or both IR reflection film and UV reflection film. ### Claim 20 An optical deflecting panel, comprising: a plurality of liquid optical deflectors arranged in an array, each of the liquid optical deflectors receives an incident light, wherein the incident light is divided by a tilting state of a liquid interface in each of the liquid optical deflectors into a transmitting light at first direction and a reflection light at a second direction. ### Claim 21 (depends on 20) The optical deflecting panel of claim 20, wherein a light inlet of each of the liquid optical deflectors for receiving the incident light is coated with IR reflection film, UV reflection film, or both IR reflection film and UV reflection film. ### Claim 22 An optical deflector, comprising: a first substrate; a first electrode layer, disposed on the first substrate; a second substrate; a second electrode layer, disposed on the second substrate; a first insulating layer, disposed on a predetermined peripheral region of the first electrode layer, exposing a central region of the first electrode layer; a second insulating layer, disposed on a predetermined peripheral region of the second electrode layer, exposing a central region of the second electrode layer; a first electrode sandwiched wall, disposed between the first insulating layer and the second insulating layer; a second electrode sandwiched wall, disposed between the first insulating layer and the second insulating layer, against the first electrode sandwiched wall, wherein an inner space is formed between the first electrode sandwiched wall and the second sandwiched wall; a first liquid, filled in the inner space; a second liquid, filled in the inner space; a third liquid, filled in the inner space between the first liquid and the second liquid without solving to each other, so as to form a first liquid interface and a second liquid interface. ### Claim 23 (depends on 22) The optical deflector of claim 22, further comprising an insulating wall, connected with the first electrode sandwiched wall and the second electrode sandwiched wall to form the inner space in a closed space. ### Claim 24 (depends on 22) The optical deflector of claim 22, further comprising an outer wall and an insulating wall, wherein the insulating wall with the first electrode sandwiched wall and the second electrode sandwiched wall to form the inner space in an open space extending to the outer wall. ### Claim 25 (depends on 22) The optical deflector of claim 22, wherein the first liquid and the second liquid are electrically conductive and the third liquid is electrically insulating. ### Claim 26 (depends on 22) The optical deflector of claim 22, wherein the first electrode sandwiched wall comprises: a first outer insulating wall, between the first insulating layer and the second insulating layer; and a first electrode wall and a second electrode wall, disposed on the outer insulating wall, respectively together with the first electrode layer and the second electrode layer to have a first voltage and a second voltage; wherein the second electrode sandwiched wall comprises: a second outer insulating wall, between the first insulating layer and the second insulating layer; and a third electrode wall and a fourth electrode wall, disposed on the outer insulating wall, respectively together with the first electrode layer and the second electrode layer to have a third voltage and a fourth voltage. ### Claim 27 (depends on 26) The optical deflector of claim 26, wherein the first electrode sandwiched wall further comprises a first inner insulating wall between the first insulating layer and the second insulating layer, so that the first electrode wall and the second electrode are sandwiched therebetween, wherein the second electrode sandwiched wall further comprises a second inner insulating wall between the first insulating layer and the second insulating layer, so that the third electrode wall and the fourth electrode are sandwiched therebetween. ### Claim 28 An optical deflecting panel, comprising: a first substrate; a first electrode layer, disposed on the first substrate; a second substrate; a second electrode layer, disposed on the second substrate; a plurality of first electrode sandwiched walls, disposed between the first insulating layer and the second insulating layer; a plurality of second electrode sandwiched walls, disposed between the first insulating layer and the second insulating layer, respectively against the first electrode sandwiched walls to form a plurality of structural units, wherein each of the structural units has an inner space; a first liquid, filled in the inner space of each of the structural units; a second liquid, filled in the inner space of each of the structural units; a third liquid, filled in the inner space of each of the structural units between the first liquid and the second liquid without solving to each other, so as to form a first liquid interface and a second liquid interface. ### Claim 29 (depends on 28) The optical deflecting panel of claim 28, wherein the first liquid and the second liquid are electrically conductive and the third liquid is electrically insulative. ### Claim 30 (depends on 28) The optical deflecting panel of claim 28, wherein each of the first electrode sandwiched walls and each of the second electrode sandwiched walls comprises: a first insulating layer and a second insulating layer, respectively disposed on the first electrode layer and the second electrode layer; an outer insulating wall, disposed between the first insulating layer and a second insulating layer; and a first electrode wall and a second electrode wall, disposed on the outer insulating wall, respectively together with the first electrode layer and the second electrode layer to have a first voltage and a second voltage. ### Claim 31 (depends on 30) The optical deflecting panel of claim 30, wherein each of the first electrode sandwiched walls and each of the second electrode sandwiched walls further comprises: an inner insulating wall, disposed between the first insulating layer and a second insulating layer, the first electrode wall and the second electrode wall respectively sandwiching between the inner insulating wall and the outer insulating wall. ### Claim 32 (depends on 28) The optical deflecting panel of claim 28, wherein each of the structural units further comprises a plurality of insulating walls respectively connected with the first electrode sandwiched wall and the second electrode sandwiched wall to form the inner space in a close space. ### Claim 33 (depends on 28) The optical deflecting panel of claim 28, wherein each of the structural units further comprises a plurality of insulating walls respectively with the first electrode sandwiched wall and the second electrode sandwiched wall to form the inner space in an open space, extending to the outer wall.