# US 2013/0155361 A1 · Display panel and manufacturing method thereof and image display system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2013/0155361 A1 - Document ID: US20130155361A1 - Status: Published application - Kind: A1 - Application number: 13/712,022 - Filed: 2012-12-12 - Published: 2013-06-20 - Earliest claimed: 2011-12-15 - Assignees: Chimei Innolux Corporation - Inventors: Hung-Ming SHEN; Wan-Ling HUANG; Kai-Neng YANG; Tsau-Hua HSIEH - Web page: https://patentgrep.com/patent/US20130155361A1 ## CPC - G03F 7/2002: {with visible light or UV light, through an original having an opaque pattern on a transparent support, e.g. film printing, projection printing; by reflection of visible or UV light from an original such as a printed image} - G02F 1/133788: {by light irradiation, e.g. linearly polarised light photo-polymerisation} - G03F: PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR; (phototypographic composing devices B41B; photosensitive materials or processes for photographic purposes G03C; electrophotography, sensitive layers or processes therefor G03G) - 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 An embodiment of the invention provides a display panel including: a first substrate; a second substrate disposed on the first substrate; a liquid crystal layer sandwiched between the first substrate and the second substrate; a first alignment layer disposed on a first surface of the first substrate facing the liquid crystal layer, and having a first trench pattern; and a second alignment layer disposed on a second surface of the second substrate facing the liquid crystal layer, and having a second trench pattern, wherein the first alignment layer and the second alignment layer are formed by polymerizing a photopolymerization monomer. ## Claims ### Claim 1 A display panel, comprising: a first substrate; a second substrate disposed on the first substrate; a liquid crystal layer sandwiched between the first substrate and the second substrate; a first alignment layer disposed on a first surface of the first substrate facing the liquid crystal layer, and having a first trench pattern; and a second alignment layer disposed on a second surface of the second substrate facing the liquid crystal layer, and having a second trench pattern, wherein the first alignment layer and the second alignment layer are formed by polymerizing a photopolymerization monomer. ### Claim 2 (depends on 1) The display panel as claimed in claim 1, wherein the photopolymerization monomer is selected from a group consisting of diacrylate series, triacrylate series, phenylpropionic acid, Coumarin (the scientific name of Coumarin is Coumarin; lactone of Cis-o-hydroxycinnamic acid), acrylic monomers and combinations thereof. ### Claim 3 (depends on 2) The display panel as claimed in claim 2, wherein the photopolymerization monomer is an acrylic monomer. ### Claim 4 (depends on 2) The display panel as claimed in claim 2, wherein the photopolymerization monomer is the diacrylate series. ### Claim 5 (depends on 4) The display panel as claimed in claim 4, wherein the diacrylate series comprises: wherein 5>m>1 in Formula 1, 5>n>1 in Formula 2, and “m” and “n” are integrals. ### Claim 6 (depends on 2) The display panel as claimed in claim 2, wherein the photopolymerization ### Claim 7 (depends on 6) The display panel as claimed in claim 6, wherein the triacrylate series comprises: ### Claim 8 (depends on 2) The display panel as claimed in claim 2, wherein the photopolymerization monomer is the phenylpropionic acid. ### Claim 9 (depends on 8) The display panel as claimed in claim 8, wherein the phenylpropionic acid comprises: ### Claim 10 (depends on 2) The display panel as claimed in claim 2, wherein the photopolymerization monomer is the Coumarin (the scientific name of Coumarin is Coumarin; lactone of Cis-o-hydroxycinnamic acid). ### Claim 11 (depends on 10) The display panel as claimed in claim 10, wherein the Coumarin (the scientific name of Coumarin is Coumarin; lactone of Cis-o-hydroxycinnamic acid) comprises: ### Claim 12 (depends on 1) The display panel as claimed in claim 1, wherein the thickness of the first alignment layer or the thickness of the second alignment layer is 20 Å-80 Å. ### Claim 13 (depends on 1) The display panel as claimed in claim 1, wherein the depth of the first trench pattern or the depth of the second trench pattern is about 20 Å-40 Å. ### Claim 14 (depends on 1) The display panel as claimed in claim 1, wherein the first trench pattern does not pass through the first alignment layer, and the second trench pattern does not pass through the second alignment layer. ### Claim 15 A manufacturing method of a display panel, comprising: providing a first substrate, a second substrate and a liquid crystal layer sandwiched therebetween, wherein the liquid crystal layer is doped with a photopolymerization monomer, and the first substrate has a first surface facing the liquid crystal layer, and the second substrate has a second surface facing the liquid crystal layer; and performing an irradiation process on the liquid crystal layer by using a photomask to polymerize the photopolymerization monomer, so as to form a first alignment layer with a first trench pattern on the first surface and a second alignment layer with a second trench pattern on the second surface. ### Claim 16 (depends on 15) The manufacturing method of the display panel as claimed in claim 15, wherein the irradiation process is performed by irradiating the photopolymerization monomer from a surface of the first substrate opposite to the first surface. ### Claim 17 (depends on 15) The manufacturing method of the display panel as claimed in claim 15, wherein the irradiation process is performed by irradiating the photopolymerization monomer from a surface of the first substrate opposite to the first surface and a surface of the second substrate opposite to the second surface. ### Claim 18 (depends on 15) The manufacturing method of the display panel as claimed in claim 15, wherein the irradiation process adopts linear polarization ultraviolet light. ### Claim 19 (depends on 1) An image display system, comprising: a display panel as claimed in claim 1; and an input unit electrically connected to the display panel to provide input signals to the display panel, such that the display panel displays images. ### Claim 20 (depends on 19) The image display system as claimed in claim 19, wherein the image display system comprises a tablet computer, a projector, an electronic book, a note book, a cell phone, a digital camera, a personal digital assistant, a desktop computer, a television, an automotive display or a portable DVD player.