# US 2014/0152925 A1 · Liquid crystal lens module and 3d display device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0152925 A1 - Document ID: US20140152925A1 - Status: Published application - Kind: A1 - Application number: 14/095,076 - Filed: 2013-12-03 - Published: 2014-06-05 - Earliest claimed: 2012-12-04 - Assignees: Boe Technology Group Co., Ltd. - Applicants: BOE Technology Group Co., LTD. - Inventors: Yanbing Wu - Web page: https://patentgrep.com/patent/US20140152925A1 ## CPC - G02B 30/27: involving lenticular arrays - G02B 30/28: involving active lenticular arrays - H04N 13/305: using lenticular lenses, e.g. arrangements of cylindrical lenses - H04N 13/356: having separate monoscopic and stereoscopic modes - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS - H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION ## Abstract Disclosed is a liquid crystal lens module, comprising a liquid crystal lens; a first polarizing sheet located at a lower surface of the liquid crystal lens; and a second polarizing sheet located at an upper surface of the liquid crystal lens, wherein the polarizing axis of the first polarizing sheet is parallel with that of the second polarizing sheet. Because of different orientations and horizontal twisting and the like of the liquid crystal molecules within the liquid crystal lens, polarizing direction of some of the polarized light transmitting through the first polarizing sheet, after being converged by the liquid crystal lens, may be changed, while the second polarizing sheet may filter out the polarized light whose polarizing direction has been changed, thus the crosstalk of the liquid crystal lens during a 3D display, caused by the polarized light whose polarizing direction has been changed, is reduced. ## Claims ### Claim 1 A liquid crystal lens module, comprising: a liquid crystal lens; a first polarizing sheet located at a lower surface of the liquid crystal lens; and a second polarizing sheet located at an upper surface of the liquid crystal lens, wherein a polarizing axis of the first polarizing sheet is parallel with that of the second polarizing sheet. ### Claim 2 (depends on 1) The liquid crystal lens module of claim 1, wherein the liquid crystal lens is provided with a plurality of lens units, and in a 3D display mode, each of the lens units has a lens effect on polarized light transmitting through the first polarizing sheet so as to direct the light emitted from left-eye pixels towards a left-eye viewing area of an observer and to direct the light emitted from right-eye pixels towards a right-eye viewing area of the observer. ### Claim 3 (depends on 2) The liquid crystal lens module of claim 2, wherein the liquid crystal lens comprises: an upper substrate; a lower substrate arranged to be opposite to the upper substrate; a liquid crystal layer between the upper and lower substrates; a first transparent electrode provided at a side of the upper substrate facing the liquid crystal layer; a second transparent electrode provided at a side of the lower substrate facing the liquid crystal layer; a first alignment film provided at a side of the first transparent electrode facing the liquid crystal layer; and a second alignment film provided at a side of the second transparent electrode facing the liquid crystal layer. ### Claim 4 (depends on 3) The liquid crystal lens module of claim 3, wherein one of the first and second transparent electrodes is a strip electrode, and the other of the first and second transparent electrodes is a surface electrode, and in the 3D display mode, voltages are supplied to the first and second transparent electrodes to generate an electric field which deflects the liquid crystal molecules in the liquid crystal layer corresponding to each lens unit to form a convex lens effect. ### Claim 5 (depends on 3) The liquid crystal lens module of claim 3, wherein the liquid crystal lens further comprises a lens layer having a concave lens structure, the lens layer being provided between the upper substrate and the first transparent electrode or between the first transparent electrode and the first alignment film, and in a 2D display mode, voltages are provided to the first and second transparent electrodes to generate an electric field which deflects the liquid crystal molecules in the liquid crystal layer corresponding to each lens unit to form a convex lens effect. ### Claim 6 (depends on 3) The liquid crystal lens of claim 3, wherein the liquid crystal lens further comprises a lens layer having a convex lens structure, the lens layer being provided between the lower substrate and the second transparent electrode or between the second transparent electrode and the second alignment film, and in a 2D display mode, voltages are provided to the first and second transparent electrodes to generate an electric field which deflects the liquid crystal molecules in the liquid crystal layer corresponding to each lens unit to form a concave lens effect. ### Claim 7 (depends on 3) The liquid crystal lens of claim 3, wherein a side of the upper substrate away from or facing the liquid crystal layer is provided with a concave lens structure, and in a 2D display mode, voltages are provided to the first and second transparent electrodes to generate an electric field which deflects the liquid crystal molecules in the liquid crystal layer corresponding to each lens unit to form a convex lens effect. ### Claim 8 (depends on 3) The liquid crystal lens of claim 3, wherein a side of the lower substrate away from or facing the liquid crystal layer is provided with a convex lens structure, and in a 2D display mode, voltages are provided to the first and second transparent electrodes to generate an electric field which deflects the liquid crystal molecules in the liquid crystal layer corresponding to each lens unit to form a concave lens effect. ### Claim 9 (depends on 1) A 3D display device, comprising: a display; and a liquid crystal lens module provided to the display, the liquid crystal lens module is the liquid crystal lens module of claim 1. ### Claim 10 (depends on 9) The 3D display device of claim 9, wherein each lens unit in the liquid crystal lens of the liquid crystal lens module corresponds to two adjacent columns of sub-pixel unit in the display, wherein one of the two adjacent columns displays a left-eye image, and the other of the two adjacent columns display a right-eye image. ### Claim 11 (depends on 9) The 3D display device of claim 9, wherein the display comprises a liquid crystal display panel, an organic electroluminescence display panel, a plasma display panel or a cathode ray tube display. ### Claim 12 (depends on 10) The 3D display device of claim 10, wherein the display comprises a liquid crystal display panel, an organic electroluminescence display panel, a plasma display panel or a cathode ray tube display. ### Claim 13 (depends on 9) The 3D display device of claim 9, wherein the liquid crystal lens is provided with a plurality of lens units, and in a 3D display mode, each lens unit has a lens effect on polarized light transmitting through the first polarizing sheet so as to direct the light emitted from left-eye pixels towards a left-eye viewing area of an observer and to direct the light emitted from right-eye pixels towards a right-eye viewing area of the observer. ### Claim 14 (depends on 9) The 3D display device of claim 9, wherein the liquid crystal lens comprises: an upper substrate; a lower substrate arranged to be opposite to the upper substrate; a liquid crystal layer between the upper and lower substrates; a first transparent electrode provided at a side of the upper substrate facing the liquid crystal layer; a second transparent electrode provided at a side of the lower substrate facing the liquid crystal layer; a first alignment film provided at a side of the first transparent electrode facing the liquid crystal layer; and a second alignment film provided at a side of the second transparent electrode facing the liquid crystal layer. ### Claim 15 (depends on 14) The 3D display device of claim 14, wherein one of the first and second transparent electrodes is a strip electrode, and the other of the first and second transparent electrodes is a surface electrode, and in the 3D display mode, voltages are supplied to the first and second transparent electrodes to generate an electric field which deflects the liquid crystal molecules in the liquid crystal layer corresponding to each lens unit to form a convex lens effect. ### Claim 16 (depends on 14) The 3D display device of claim 14, wherein the liquid crystal lens further comprises a lens layer having a concave lens structure, the lens layer being provided between the upper substrate and the first transparent electrode or between the first transparent electrode and the first alignment film, and in a 2D display mode, voltages are provided to the first and second transparent electrodes to generate an electric field which deflects the liquid crystal molecules in the liquid crystal layer corresponding to each lens unit to form a convex lens effect. ### Claim 17 (depends on 14) The 3D display device of claim 14, wherein the liquid crystal lens further comprises a lens layer having a convex lens structure, the lens layer being provided between the lower substrate and the second transparent electrode or between the second transparent electrode and the second alignment film, and in a 2D display mode, voltages are provided to the first and second transparent electrodes to generate an electric field which deflects the liquid crystal molecules in the liquid crystal layer corresponding to each lens unit to form a concave lens effect. ### Claim 18 (depends on 14) The 3D display device of claim 14, wherein a side of the upper substrate away from or facing the liquid crystal layer is provided with a concave lens structure, and in a 2D display mode, voltages are provided to the first and second transparent electrodes to generate an electric field which deflects the liquid crystal molecules in the liquid crystal layer corresponding to each lens unit to form a convex lens effect. ### Claim 19 (depends on 14) The 3D display device of claim 14, wherein a side of the lower substrate away from or facing the liquid crystal layer is provided with a convex lens structure, and in a 2D display mode, voltages are provided to the first and second transparent electrodes to generate an electric field which deflects the liquid crystal molecules in the liquid crystal layer corresponding to each lens unit to form a concave lens effect. ### Claim 20 (depends on 9) The 3D display device of claim 9, wherein the display comprises a liquid crystal display panel, and a polarizing sheet of the liquid crystal display panel is the first polarizing sheet.