# US 2018/0023771 A1 · Display device and method for manufacturing the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2018/0023771 A1 - Document ID: US20180023771A1 - Status: Published application - Kind: A1 - Application number: 15/447,842 - Filed: 2017-03-02 - Published: 2018-01-25 - Earliest claimed: 2016-07-21 - Assignees: Samsung Display Co., Ltd. - Applicants: Samsung Display Co., Ltd. - Inventors: Jungkyun KIM; Hanmoe CHA; Donghoon KIM - Web page: https://patentgrep.com/patent/US20180023771A1 ## CPC - G02F 1/133603: {with LEDs} - F21K 9/64: using wavelength conversion means distinct or spaced from the light-generating element, e.g. a remote phosphor layer - F21K 9/90: Methods of manufacture - F21V 3/02: characterised by the shape - G02F 1/133606: {including a specially adapted diffusing, scattering or light controlling members} - G02F 1/133608: {including particular frames or supporting means} - G02F 1/133611: {including means for improving the brightness uniformity} - H10H 20/8513: {having two or more wavelength conversion materials} - G02F 1/133614: {using photoluminescence, e.g. phosphors illuminated by UV or blue light} - 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 - F21K: NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR - F21V: FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR - H10H: INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS ## Abstract A display device includes an organic fluorescent body unit and a display panel provided on the organic fluorescent body unit. The organic fluorescent body unit may include a light source unit including a light source substrate and a plurality of light sources on the light source substrate, a red organic fluorescent body layer covering the light sources and including a red organic fluorescent body, and a green organic fluorescent body layer provided on the red organic fluorescent body layer and including a green organic fluorescent body. The red organic fluorescent body layer may include a plurality of red organic fluorescent body patterns, each of which respectively covers one of the light sources. ## Claims ### Claim 1 A display device comprising an organic fluorescent body unit and a display panel provided on the organic fluorescent body unit, wherein the organic fluorescent body unit includes: a light source unit including a light source substrate and a plurality of light sources on the light source substrate; a red organic fluorescent body layer covering the light sources and including a red organic fluorescent body; and a green organic fluorescent body layer provided on the red organic fluorescent body layer and including a green organic fluorescent body, the red organic fluorescent body layer including a plurality of red organic fluorescent body patterns, each of which respectively covers one of the light sources. ### Claim 2 (depends on 1) The display device as claimed in claim 1, wherein, on a plane, the red organic fluorescent body patterns overlap a portion of the light source substrate. ### Claim 3 (depends on 1) The display device as claimed in claim 1, wherein, on a plane, the red organic fluorescent body patterns are spaced apart from each other. ### Claim 4 (depends on 1) The display device as claimed in claim 1, wherein the organic fluorescent body unit further includes a base member in which are defined fluorescent body grooves, wherein the base member is provided between the light source substrate and the green organic fluorescent body layer, each of the red organic fluorescent body patterns being respectively accommodated in one of the fluorescent body grooves. ### Claim 5 (depends on 4) The display device as claimed in claim 4, wherein the fluorescent body grooves are provided on the bottom face of the base member. ### Claim 6 (depends on 4) The display device as claimed in claim 4, wherein: the bottom face of the base member contacts the light source substrate and the red organic fluorescent body patterns, and the top face of the base member contacts the green organic fluorescent body layer. ### Claim 7 (depends on 1) The display device as claimed in claim 1, wherein the green organic fluorescent body layer is spaced apart from the light source substrate and provided over the entirety of the light source substrate. ### Claim 8 (depends on 1) The display device as claimed in claim 1, wherein the red organic fluorescent body layer is provided over the entirety of the light source substrate and covers the light sources. ### Claim 9 (depends on 1) The display device as claimed in claim 1, further comprising an optical sheet provided between the organic fluorescent body unit and the display panel. ### Claim 10 (depends on 9) The display device as claimed in claim 9, further comprising a diffusion plate provided between the organic fluorescent body unit and the optical sheet. ### Claim 11 (depends on 1) The display device as claimed in claim 1, wherein a face of the green organic fluorescent body layer is exposed to air. ### Claim 12 (depends on 1) The display device as claimed in claim 1, wherein the red organic fluorescent body is a perylene-based compound and the green organic fluorescent body is a boron-dipyrromethene-based compound. ### Claim 13 (depends on 1) The display device as claimed in claim 1, wherein light generated by the green organic fluorescent body has a full width at half maximum that is smaller than the full width at half maximum of light generated by the red organic fluorescent body. ### Claim 14 (depends on 1) The display device as claimed in claim 1, wherein the glass transition temperature of the green organic fluorescent body is lower than the glass transition temperature of the red organic fluorescent body. ### Claim 15 A method for manufacturing a display device, the method comprising providing an organic fluorescent body unit and providing a display panel on the organic fluorescent body unit, wherein the providing of the organic fluorescent body unit includes: preparing a base substrate and a plurality of light sources provided on the base substrate; providing a red organic fluorescent body layer including a plurality of organic fluorescent body patterns, each of which respectively covers one of the light sources; and providing a green organic fluorescent body layer on the red organic fluorescent body layer. ### Claim 16 (depends on 15) The method as claimed in claim 15, further comprising: forming injection holes in the base substrate; and providing the light sources on the base substrate. ### Claim 17 (depends on 16) The method as claimed in claim 16, wherein, in the providing of the light sources, each of the light sources is provided spaced apart on a plane from the injection holes. ### Claim 18 (depends on 15) The method as claimed in claim 15, further comprising providing a base member in which are defined fluorescent body grooves, each of which respectively accommodates one of the light sources, wherein the providing of the red organic fluorescent body layer includes injecting the red organic fluorescent body and a first resin into the injection holes to fill the fluorescent body grooves. ### Claim 19 (depends on 18) The method as claimed in claim 18, further comprising sealing the injection holes after the providing of the red organic fluorescent body layer.