# US 10,312,443 B2 · Method of manufacturing light-emitting display device and light-emitting display device manufactured using the method > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,312,443 B2 - Document ID: US10312443B2 - Status: Granted - Kind: B2 - Application number: 14/884,798 - Filed: 2015-10-16 - Published: 2016-11-24 - Granted: 2019-06-04 - Earliest claimed: 2015-05-22 - Assignees: Samsung Display Co., Ltd. - Applicants: Samsung Display Co., Ltd. - Inventors: Hyang Shik Kong; Yoon Ho Kang; Dong Hoon Kwak; Sung Woong Kim; Yool Guk Kim; Jae Hoon Kim; Ye Seul Na; Seok Soon Back; Jae Kwon Hwang - Web page: https://patentgrep.com/patent/US10312443B2 ## CPC - H10K 71/00: Manufacture or treatment specially adapted for the organic devices covered by this subclass - H10K 71/135: {using ink-jet printing} - H10K 71/166: {using selective deposition, e.g. using a mask} - H10K 50/15: Hole transporting layers - H10K 59/122: Pixel-defining structures or layers, e.g. banks - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES ## Abstract A method of manufacturing a light-emitting display device, the method including forming a first electrode on a substrate, the substrate including a plurality of pixel regions divided by a non-pixel region, in each of the pixel regions; forming a pixel defining layer, the pixel defining layer having a plurality of pixel openings, each of the pixel openings exposing the first electrode, on the substrate; forming a hole injection layer on the first electrode; forming a lyophilic layer on the hole injection layer to completely overlap the hole injection layer; forming a hole transport layer on the lyophilic layer; forming a light-emitting layer on the hole transport layer; and forming a second electrode on the light-emitting layer. ## Claims ### Claim 1 A method of manufacturing a light-emitting display device, the method comprising: forming a first electrode on a substrate, the substrate including a display area including plurality of pixel regions divided by a non-pixel region in each of the pixel regions; forming a pixel defining layer, the pixel defining layer having a plurality of pixel openings, each of the pixel openings exposing the first electrode, on the substrate; forming a hole injection layer on the first electrode; forming a lyophilic layer on the hole injection layer to completely overlap the hole injection layer by forming a lyophilic material layer, whose portion in contact with the hole injection layer is curable by light, on the hole injection layer, placing an open mask, the open mask including an opening region and a blocking region located outside the opening region, and the open mask being above the pixel defining layer such that the opening region overlaps an entirety of the pixel regions and the non-pixel region, and irradiating the light to the lyophilic material layer such that the pixel regions and the non-pixel region are entirely irradiated; forming a hole transport layer on the lyophilic layer; forming a light-emitting layer on the hole transport layer; and forming a second electrode on the light-emitting layer. ### Claim 2 (depends on 1) The method as claimed in claim 1, wherein the lyophilic material layer includes a first portion contacting a surface of the hole injection layer and a second portion contacting a surface of the pixel defining layer. ### Claim 3 (depends on 2) The method as claimed in claim 2, wherein the lyophilic material layer is formed using a slit coating method. ### Claim 4 (depends on 2) The method as claimed in claim 2, wherein forming the lyophilic layer further includes removing the second portion using a developing solution after irradiating the light to the lyophilic material layer. ### Claim 5 (depends on 1) The method as claimed in claim 1, wherein an entirety of the lyophilic material layer contacts the hole injection layer within each of the pixel openings of the pixel defining layer. ### Claim 6 (depends on 5) The method as claimed in claim 5, wherein the lyophilic material layer is formed using an inkjet printing method or a nozzle printing method. ### Claim 7 (depends on 1) The method as claimed in claim 1, wherein the lyophilic material layer includes one or more of olefin, acrylate, methacrylate, vinyl ether, quinone, benzophenone, benzoin ether, aryl ketone, peroxide, biimidazole, benzyl dimethyl ketal, hydroxyl alkyl phenyl acetophone, dialkoxy actophenone, trimethylbenzoyl phosphine oxide derivatives, aminoketone, benzoyl cyclohexanol, methyl thiophenyl morpholino ketone, morpholino phenyl amino ketone, alpha halogeno acetophenone, oxysulfonyl ketone, sulfonyl ketone, oxysulfonyl ketone, sulfonyl ketone, benzoyl oxime ester, thioxanthone, camphorquinone, ketocoumarin, or Michler's ketone. ### Claim 8 (depends on 7) The method as claimed in claim 7, wherein the hole injection layer includes one or more of 4,4′,4″-tris(3-methylphenylphenylamino)triphenylamine (MTDATA), copper phthalocyanine (CuPc), polyaniline (PANT), or poly(3,4-ethylenedioxythiophene)/polystyrene sulfonate (PEDOT/PSS). ### Claim 9 (depends on 1) The method as claimed in claim 1, wherein forming the hole injection layer is performed using an inkjet printing method or a nozzle printing method. ### Claim 10 (depends on 1) The method as claimed in claim 1, wherein forming the hole transport layer is performed using an inkjet printing method or a nozzle printing method. ### Claim 11 (depends on 1) The method as claimed in claim 1, wherein the pixel defining layer includes an insulating material that contains fluorine. ### Claim 12 (depends on 1) The method as claimed in claim 1, wherein the opening region of the open mask consists of one opening. ### Claim 13 (depends on 1) The method as claimed in claim 1, wherein the light is ultraviolet (UV) light. ### Claim 14 (depends on 1) The method as claimed in claim 1, wherein a first portion of the lyophilic material layer contacting the hole injection layer is cured by the light, wherein a second portion of the lyophilic material layer contacting the pixel defining layer is not cured by the light, and wherein the pixel defining layer is lyophobic.