# US 7,612,844 B2 · Wide viewing angle liquid crystal display panel > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 7,612,844 B2 - Document ID: US7612844B2 - Status: Granted - Kind: B2 - Application number: 11/346,324 - Filed: 2006-02-03 - Published: 2006-08-24 - Granted: 2009-11-03 - Earliest claimed: 2005-02-24 - Assignees: Au Optronics Corporation - Inventors: Po-Lun Chen; Ting-Jui Chang; Chih-Wen Chen - Web page: https://patentgrep.com/patent/US7612844B2 ## CPC - G02F 1/1334: based on polymer dispersed liquid crystals, e.g. microencapsulated liquid crystals - G02F 1/13363: Birefringent elements, e.g. for optical compensation - G02F 1/13345: {Network or three-dimensional gels} - G02F 1/133565: {inside the LC elements, i.e. between the cell substrates} - G02F 1/133631: {with a spatial distribution of the retardation value} - 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 A wide viewing angle liquid crystal display (LCD) panel comprising an upper substrate, a lower substrate, and a liquid crystal (LC) layer is provided. The upper substrate is assembled above the lower substrate. The LC layer is interposed between the two substrates. The LC layer has LC molecules mixed with a predetermined percentage of negative anisotropic monomers. The optical axes of the monomers and the LC molecules as the LCD panel in dark state forms an angle less than 10 degree. ## Claims ### Claim 1 A wide viewing angle liquid crystal display (LCD) panel comprising: an upper substrate; a lower substrate disposed below the upper substrate; and a liquid crystal (LC) layer, interposed between the upper substrate and the lower substrate, having LC molecules mixed with a predetermined proportion of anisotropic monomers; wherein an angle between optical axes of the an anisotropic monomers and the LC molecules is less than 10 degree as the wide viewing angle LCD panel is in a dark state and wherein the LC molecules are positive optical anisotropic while the monomers are negative optical anisotropic, and the LC molecules are negative optical anisotropic while the monomers are positive optical anisotropic. ### Claim 2 (depends on 1) The wide viewing angle LCD panel of claim 1, wherein the monomers are uniformly distributed in the LC layer. ### Claim 3 (depends on 1) The wide viewing angle LCD panel of claim 1, wherein the optical axes of the monomers and the LC molecules within the LC layer are substantially pointing toward the same direction as the LCD panel in the dark state. ### Claim 4 (depends on 1) The wide viewing angle LCD panel of claim 1, wherein the LC molecules are vertical aligned (VA) LC molecules. ### Claim 5 (depends on 4) The wide viewing angle LCD panel of claim 4, wherein the monomers are negative optical an isotropic, and the optical axes of the monomers are substantially perpendicular to the upper substrate or the lower substrate. ### Claim 6 (depends on 4) The wide viewing angle LCD panel of claim 4, wherein the monomers are positive optical an isotropic characteristic, and the optical axes of the monomers are substantially parallel to the upper substrate or the lower substrate. ### Claim 7 (depends on 1) The wide viewing angle LCD panel of claim 1, wherein the LC molecules are twisted nematic (TN) LC molecules. ### Claim 8 (depends on 7) The wide viewing angle LCD panel of claim 7, wherein the monomers are negative optical an isotropic characteristic, and the optical axes of the monomers are substantially perpendicular to the upper substrate or the lower substrate. ### Claim 9 (depends on 7) The wide viewing angle LCD panel of claim 7, wherein the monomers are positive optical an isotropic, and the optical axes of the monomers are substantially parallel to the upper substrate or the lower substrate. ### Claim 10 (depends on 1) The wide viewing angle LCD panel of claim 1, wherein the LC molecules are in-plane switch (IPS) LC molecules. ### Claim 11 (depends on 10) The wide viewing angle LCD panel of claim 10, wherein the monomers are negative optical an isotropic, and the optical axes of the monomers are substantially parallel to the upper substrate or the lower substrate. ### Claim 12 (depends on 10) The wide viewing angle LCD panel of claim 10, wherein the monomers are positive optical an isotropic, and the optical axes of the monomers are substantially perpendicular to the upper substrate or the lower substrate. ### Claim 13 (depends on 1) The wide viewing angle LCD panel of claim 1, wherein at least part of the monomers are polymerized to form a polymer network. ### Claim 14 (depends on 13) The wide viewing angle LCD panel of claim 13, wherein the polymer network is a wall-like structure extending from the lower substrate toward the upper substrate with a gap formed between the polymer network and the upper substrate. ### Claim 15 (depends on 13) The wide viewing angle LCD panel of claim 13, wherein the polymer network is a wall-like structure extended from the lower substrate toward the upper substrate. ### Claim 16 (depends on 14) The wide viewing angle LCD panel of claim 14, wherein the gap is greater than half the thickness of the LC layer. ### Claim 17 (depends on 1) The wide viewing angle LCD panel of claim 1, further comprising an upper polarizer disposed over the upper substrate, and a lower polarizer disposed below the lower substrate, wherein the absorption axes of the upper polarizer and the lower polarizer are substantially perpendicular with each other. ### Claim 18 (depends on 17) The wide viewing angle LCD panel of claim 17, further comprising a compensator interposed between the upper polarizer and the upper substrate. ### Claim 19 (depends on 17) The wide viewing angle LCD panel of claim 17, further comprising a compensator interposed between the lower polarizer and the lower substrate.