# US 8,570,450 B2 · Stereoscopic image display device and method for manufacturing the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,570,450 B2 - Document ID: US8570450B2 - Status: Granted - Kind: B2 - Application number: 13/186,830 - Filed: 2011-07-20 - Published: 2012-01-26 - Granted: 2013-10-29 - Earliest claimed: 2010-07-23 - Assignees: LG Display Co., Ltd. - Applicants: Cheol-Hwan Lee; Dae-Jung Choi - Inventors: Cheol-Hwan Lee; Dae-Jung Choi - Web page: https://patentgrep.com/patent/US8570450B2 ## CPC - G02B 26/004: {based on a displacement or a deformation of a fluid} - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS ## Abstract A stereoscopic image display device and a method for manufacturing the same are disclosed, in which switching between a two-dimensional image and a three-dimensional image is performed using an electro wettable material depending on whether a voltage is applied. The stereoscopic image display device comprises a display panel; a first electrode formed on one surface of the display panel; a wall formed to divide a plurality of lens areas at the boundary of the respective lens areas on the first electrode; an electro-wettable material included in the wall; a first substrate formed on the wall to face the display panel; and a second electrode formed at the center of each wall on the first substrate. ## Claims ### Claim 1 A stereoscopic image display device comprising: a display panel; a first electrode formed on one surface of the display panel; a plurality of walls formed to divide a plurality of lens areas at the boundaries of the respective lens areas on the first electrode; an electro-wettable material in the plurality of walls; a first substrate formed on each wall to face the display panel; and a second electrode formed at the center of each wall on the first substrate. ### Claim 2 (depends on 1) The stereoscopic image display device of claim 1, wherein the first and second electrodes are transparent electrodes. ### Claim 3 (depends on 2) The stereoscopic image display device of claim 2, wherein the first electrode is formed on the entire of one surface of the display panel. ### Claim 4 (depends on 1) The stereoscopic image display device of claim 1, wherein the electro-wettable material is a hydrophilic material, and each wall is a hydrophobic insulating material. ### Claim 5 (depends on 4) The stereoscopic image display device of claim 4, further comprising a power source allowing vertical field between the first and second electrodes to be greater than surface intension between each wall and the electro-wettable material. ### Claim 6 (depends on 5) The stereoscopic image display device of claim 5, wherein the electro-wettable material has a lens pattern per lens area when different voltages are applied to the first and second electrodes through the power source. ### Claim 7 (depends on 1) The stereoscopic image display device of claim 1, wherein the display panel is any one of a liquid crystal panel, an organic light-emitting display panel, an electrophoresis display panel, a plasma display panel, a field emission display panel, and a quantum dot display panel. ### Claim 8 (depends on 1) The stereoscopic image display device of claim 1, wherein the electro-wettable material is formed to fill a part of a space in each wall. ### Claim 9 (depends on 8) The stereoscopic image display device of claim 8, further comprising a hydrophobic fluid in each wall in addition to the electro-wettable material. ### Claim 10 (depends on 1) The stereoscopic image display device of claim 1, wherein the display panel includes second and third substrates facing each other, a liquid crystal layer filled between the second substrate and the third substrate, a thin film transistor array formed in the second substrate, and a color filter array formed on the third substrate. ### Claim 11 (depends on 1) The stereoscopic image display device of claim 1, further comprising a first polarizer and a second polarizer respectively formed on other surface of the display panel and a surface of the first substrate. ### Claim 12 A method for manufacturing a stereoscopic image display device, the method comprising: preparing a display panel; forming a first electrode on one surface of the display panel; forming a plurality of walls of a certain height to divide a plurality of lens areas at the boundaries of the respective lens areas on the first electrode; forming an electro-wettable material in the plurality of walls; and bonding a first substrate onto each wall to face the display panel, the first substrate including a second electrode to correspond to the center of each wall. ### Claim 13 (depends on 12) The method of claim 12, wherein the first and second electrodes are formed of transparent electrodes. ### Claim 14 (depends on 12) The method of claim 12, wherein the electro-wettable material is a hydrophilic material, and each wall is a hydrophobic insulating material. ### Claim 15 (depends on 14) The method of claim 14, further comprising connecting a power source, which allows vertical field between the first and second electrodes to be greater than surface intension between each wall and the electro-wettable material, with the first and second electrodes.