# US 2014/0192280 A1 · Shutter Glasses and Related 3D Display System > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0192280 A1 - Document ID: US20140192280A1 - Status: Published application - Kind: A1 - Application number: 13/812,147 - Filed: 2013-01-11 - Published: 2014-07-10 - Earliest claimed: 2013-01-09 - Assignees: Shenzhen China Star Optoelectronics Technology Co., Ltd. - Applicants: Shenzhen China Star Optoelectronics Technology Co. Ltd. - Inventors: Jhen-Wei He - Web page: https://patentgrep.com/patent/US20140192280A1 ## CPC - H04N 13/337: using polarisation multiplexing - G02B 30/24: involving temporal multiplexing, e.g. using sequentially activated left and right shutters - G02B 30/25: using polarisation techniques - G02F 1/13471: {in which all the liquid crystal cells or layers remain transparent, e.g. FLC, ECB, DAP, HAN, TN, STN, SBE-LC cells (G02F1/13475 takes precedence)} - H04N 13/341: using temporal multiplexing - G02F 1/13363: Birefringent elements, e.g. for optical compensation - H04N 2213/001: Constructional or mechanical details - H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS - G02F: OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS ## Abstract The present invention discloses shutter glasses and a 3D display system. The shutter glasses include a first polarizer, a second polarizer, a normally-white LCD panel, and a normally-black LCD panel. A thickness of the normally-white LCD panel is not the same as a thickness of the normally-black LCD panel, and an optical compensation film is installed between the first polarizer and the liquid crystal layer of the normally-black LCD panel and/or between the second polarizer and the liquid crystal layer of the normally-black LCD panel in order to compensate for a dispersion occurred when the liquid crystal layer of the normally-black LCD panel is in a dark mode. In this way, the present invention can not only shorten the response time of the shutter glasses to reduce the power consumption, but also reduce the 3D crosstalk. ## Claims ### Claim 1 A shutter glasses, comprising: a frame; a liquid crystal display panel, installed inside the frame, the liquid crystal panel comprising stacked a normally-white LCD panel and a normally-black LCD panel, wherein a thickness of the normally-white LCD panel is not the same as a thickness of the normally-black LCD panel; a first polarizer, installed between the normally-white LCD panel and the normally-black LCD panel; and a second polarizer; wherein the normally-black LCD panel comprises a first substrate and a second substrate, a liquid crystal layer of the normally-black LCD panel is sandwiched between the first substrate and the second substrate, the first substrate is close to the first polarizer, the second substrate is close to the second polarizer, and the optical compensation film is installed between the first substrate and the first polarizer and/or between the second substrate and the second polarizer in order to compensate for a dispersion occurred when the liquid crystal layer of the normally-black LCD panel is in a dark mode, wherein a thickness of the optical compensation film is determined according to a variance trend of the dispersion of the liquid crystal layer of the normally-black LCD panel, and the thickness is determined to be thicker when the variance trend is larger. ### Claim 2 (depends on 1) The shutter glasses of claim 1, wherein the optical compensation film is made by a material selected from a group consisting of acetate fiber (TAC), cycloalkene polymer (COC), cycloalkene copolymer (COP), and thermoplastic polyester (PET). ### Claim 3 A shutter glasses, comprising: a frame; a liquid crystal display panel, installed inside the frame, the liquid crystal panel comprising stacked a normally-white LCD panel and a normally-black LCD panel, wherein a thickness of the normally-white LCD panel is not the same as a thickness of the normally-black LCD panel; a first polarizer, installed between the normally-white LCD panel and the normally-black LCD panel; and a second polarizer; wherein a liquid crystal layer of the normally-black LCD panel is installed between the first polarizer and the second polarizer, and an optical compensation film is installed between the first polarizer and the liquid crystal layer of the normally-black LCD panel and/or between the second polarizer and the liquid crystal layer of the normally-black LCD panel in order to compensate for a dispersion occurred when the liquid crystal layer of the normally-black LCD panel is in a dark mode. ### Claim 4 (depends on 3) The shutter glasses of claim 3, wherein a thickness of the optical compensation film is determined according to a variance trend of the dispersion of the liquid crystal layer of the normally-black LCD panel, and the thickness is determined to be thicker when the variance trend is larger. ### Claim 5 (depends on 3) The shutter glasses of claim 3, wherein the normally-black LCD panel comprises a first substrate and a second substrate, the liquid crystal layer is sandwiched between the first substrate and the second substrate, the first substrate is close to the first polarizer, the second substrate is close to the second polarizer, and the optical compensation film is installed between the first substrate and the first polarizer and/or between the second substrate and the second polarizer. ### Claim 6 (depends on 3) The shutter glasses of claim 3, wherein the normally-black LCD panel comprises a first substrate and a second substrate, the liquid crystal layer is sandwiched between the first substrate and the second substrate, the first substrate is close to the first polarizer, the second substrate is close to the second polarizer, and the optical compensation film is installed between the first substrate and the liquid crystal layer and/or between the second substrate and the liquid crystal layer. ### Claim 7 (depends on 3) The shutter glasses of claim 3 further comprising a third polarizer, wherein the normally-white LCD panel is between the first polarizer and the third polarizer, an optical axis of the second polarizer is parallel to an optical axis of the first polarizer, and an optical axis of the third polarizer is perpendicular to the optical axis of the first polarizer. ### Claim 8 (depends on 3) The shutter glasses of claim 3, wherein the optical compensation film is made by a material selected from a group consisting of acetate fiber (TAC), cycloalkene polymer (COC), cycloalkene copolymer (COP), and thermoplastic polyester (PET). ### Claim 9 (depends on 3) The shutter glasses of claim 3 further comprising an incident side and an emitting side, wherein the normally-black LCD panel is located on the incident side and the normally-white LCD panel is located on the emitting side. ### Claim 10 (depends on 3) The shutter glasses of claim 3 further comprising an incident side and an emitting side, wherein the normally-black LCD panel is located on the emitting side and the normally-white LCD panel is located on the incident side. ### Claim 11 (depends on 3) The shutter glasses of claim 3 further comprising a driving circuit, configured to generate a driving signal to drive the LCD panel. ### Claim 12 A 3D display system comprising a shutter glasses, the shutter glasses comprising: a frame; a liquid crystal display panel, installed inside the frame, the liquid crystal panel comprising stacked a normally-white LCD panel and a normally-black LCD panel, wherein a thickness of the normally-white LCD panel is not the same as a thickness of the normally-black LCD panel; a first polarizer, installed between the normally-white LCD panel and the normally-black LCD panel; and a second polarizer; wherein a liquid crystal layer of the normally-black LCD panel is installed between the first polarizer and the second polarizer, and an optical compensation film is installed between the first polarizer and the liquid crystal layer of the normally-black LCD panel and/or between the second polarizer and the liquid crystal layer of the normally-black LCD panel in order to compensate for a dispersion occurred when the liquid crystal layer of the normally-black LCD panel is in a dark mode. ### Claim 13 (depends on 12) The 3D display system of claim 12, wherein a thickness of the optical compensation film is determined according to a variance trend of the dispersion of the liquid crystal layer of the normally-black LCD panel, and the thickness is determined to be thicker when the variance trend is larger. ### Claim 14 (depends on 12) The 3D display system of claim 12, wherein the normally-black LCD panel comprises a first substrate and a second substrate, the liquid crystal layer is sandwiched between the first substrate and the second substrate, the first substrate is close to the first polarizer, the second substrate is close to the second polarizer, and the optical compensation film is installed between the first substrate and the first polarizer and/or between the second substrate and the second polarizer. ### Claim 15 (depends on 12) The 3D display system of claim 12, wherein the normally-black LCD panel comprises a first substrate and a second substrate, the liquid crystal layer is sandwiched between the first substrate and the second substrate, the first substrate is close to the first polarizer, the second substrate is close to the second polarizer, and the optical compensation film is installed between the first substrate and the liquid crystal layer and/or between the second substrate and the liquid crystal layer. ### Claim 16 (depends on 12) The 3D display system of claim 12, wherein the shutter glasses further comprises a third polarizer, wherein the normally-white LCD panel is between the first polarizer and the third polarizer, an optical axis of the second polarizer is parallel to an optical axis of the first polarizer, and an optical axis of the third polarizer is perpendicular to the optical axis of the first polarizer. ### Claim 17 (depends on 12) The 3D display system of claim 12, wherein the optical compensation film is made by a material selected from a group consisting of acetate fiber (TAC), cycloalkene polymer (COC), cycloalkene copolymer (COP), and thermoplastic polyester (PET). ### Claim 18 (depends on 12) The 3D display system of claim 12, wherein the shutter glasses further comprises an incident side and an emitting side, wherein the normally-black LCD panel is located on the incident side and the normally-white LCD panel is located on the emitting side. ### Claim 19 (depends on 12) The 3D display system of claim 12, wherein the shutter glasses further comprises an incident side and an emitting side, wherein the normally-black LCD panel is located on the emitting side and the normally-white LCD panel is located on the incident side. ### Claim 20 (depends on 12) The 3D display system of claim 12, wherein the shutter glasses further comprises a driving circuit, configured to generate a driving signal to drive the LCD panel.