# US 11,309,521 B2 · Flexible display module having a hollow defined middle > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,309,521 B2 - Document ID: US11309521B2 - Status: Granted - Kind: B2 - Application number: 16/659,966 - Filed: 2019-10-22 - Published: 2020-02-13 - Granted: 2022-04-19 - Earliest claimed: 2017-10-31 - Assignees: Kunshan New Flat Panel Display Technology Center Co., Ltd. - Applicants: Kunshan New Flat Panel Display Technology Center Co., Ltd. - Inventors: Bo Yuan; Li Lin; Lin Xu; Genmao Huang; Kun Hu; Hao Feng - Web page: https://patentgrep.com/patent/US11309521B2 ## CPC - H10K 77/111: {Flexible substrates} - G09F 9/30: in which the desired character or characters are formed by combining individual elements (panels comprising a number of electrodes in a single cell controlling light arriving from an independent light source, e.g. electro-optical or magneto-optical cell, G02F1/00) - H10K 59/40: OLEDs integrated with touch screens - H10K 59/50: OLEDs integrated with light modulating elements, e.g. with electrochromic elements, photochromic elements or liquid crystal elements - H10K 59/871: {Self-supporting sealing arrangements} - H10K 59/8722: {Peripheral sealing arrangements, e.g. adhesives, sealants} - H10K 59/873: {Encapsulations} - G02F 1/133305: {Flexible substrates, e.g. plastics, organic film} - H10K 59/12: Active-matrix OLED [AMOLED] displays - H10K 2102/311: {Flexible OLED} - Y02E 10/549: Organic PV cells - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES - G09F: DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS - 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 - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION ## Abstract A flexible display module and a manufacturing method thereof are disclosed. The flexible display module includes a first flexible material layer and a second flexible material layer stacked on the first flexible layer, a sealing layer disposed between the first flexible material layer and the second flexible material layer, and a module layer disposed in the hollow of the sealing layer. The sealing layer has a hollow defined in a middle of the sealing layer. The area of the bottom area of the hollow is larger than the area of the module layer. ## Claims ### Claim 1 A flexible display module, comprising: a first flexible material layer and a second flexible material layer stacked on the first flexible layer; a sealing layer disposed between the first flexible material layer and the second flexible material layer, the sealing layer having a hollow defined in a middle thereof, the sealing layer comprising a rim portion and an open frame portion, the open frame portion and the rim portion being combined to form a frame shape and a module layer disposed in the hollow of the sealing layer, wherein an area of a bottom area of the hollow is larger than an area of the module layer, the module layer being a display panel comprising a bonding end for establishing an electrical connection with an external circuit structure, the rim portion of the sealing layer being pressed onto a surface of the bonding end of the module layer, and bonding pins of the bonding end being exposed. ### Claim 2 (depends on 1) The flexible display module according to claim 1, wherein the first flexible material layer and/or the second flexible material layer is a flexible glass layer. ### Claim 3 (depends on 1) The flexible display module according to claim 1, further comprising: a first silicone oil layer disposed between the module layer and the first flexible material layer; and/or a second silicone oil layer disposed between the module layer and the second flexible material layer. ### Claim 4 (depends on 1) The flexible display module according to claim 1, wherein the module layer comprises a fixed region fixed to the first flexible material layer and/or the second flexible material layer, and a sliding region slidable relative to the first flexible material layer and the second flexible material layer in the hollow, the fixed region extending from the bonding end. ### Claim 5 (depends on 1) The flexible display module according to claim 1, wherein the sealing layer comprises at least one gas vent and a sealing material for sealing the gas vent. ### Claim 6 (depends on 5) The flexible display module according to claim 5, wherein the sealing layer comprises a plurality of the gas vents, and the plurality of the gas vents are formed in a predetermined bending region of the flexible display module and/or in an extension region of a gap between the module layer and the hollow, respectively. ### Claim 7 (depends on 1) The flexible display module according to claim 1, wherein the sealing layer is adhered to the first flexible material layer and/or the second flexible material layer by an adhesive layer, and the sealing layer is made of silicone rubber. ### Claim 8 (depends on 1) The flexible display module according to claim 1, wherein the module layer comprises a substrate, a thin film transistor device layer, an organic light emitting diode device layer, a touch screen and a polarizer which are stacked in sequence; or, the module layer is one or a combination of the substrate, the thin film transistor device layer, the organic light emitting diode device layer, the touch screen and the polarizer; or, the module layer comprises a polarization layer, a touch layer and a display functional layer which are stacked, wherein the touch layer comprises a third flexible glass layer and a conductive material layer coated onto one side of the third flexible glass layer, and the conductive material layer is disposed between the third flexible glass layer and the display functional layer; or, the module layer comprises the polarization layer, an ultra-thin glass layer, an indium tin oxide layer, a pressure-sensitive adhesive layer and the organic light emitting diode device layer which are stacked, wherein only the indium tin oxide layer and the pressure-sensitive adhesive layer have moisture and oxygen blocking adhesive layers disposed on peripheries thereof; or, the module layer comprises the thin film transistor device layer, an anode layer, an organic light emitting layer and a cathode layer which are disposed successively. ### Claim 9 (depends on 1) A method for manufacturing a flexible display module according to claim 1, comprising: manufacturing the sealing layer on a surface of a first flexible material layer, wherein the sealing layer has a hollow defined in a middle thereof, and an area of a bottom area of the hollow is larger than an area of the module layer; attaching the module layer within the hollow; and attaching the second flexible material layer to a surface of the sealing layer, wherein before the attaching the module layer within the hollow, the method comprises coating a first silicone oil layer on a bottom surface of the hollow. ### Claim 10 (depends on 9) The method for manufacturing a flexible display module according to claim 9, before the attaching a second flexible material layer to a surface of the sealing layer, further comprising: coating a second silicone layer on a surface of the module layer. ### Claim 11 (depends on 9) The method for manufacturing a flexible display module according to claim 9, wherein the module layer is a display panel comprising a bonding end for establishing an electrical connection with an external circuit structure; wherein the manufacturing a sealing layer on a surface of a first flexible material layer comprises: manufacturing, on a surface of the first flexible material layer, an open frame portion of the sealing layer; wherein the attaching the module layer within the hollow comprises: attaching the module layer within an open region of the open frame portion, and making the bonding end of the module layer extending out from the open region of the open frame portion; wherein, before the attaching a second flexible material layer to a surface of the sealing layer, the method further comprises: pressing a rim portion of the sealing layer onto a surface of the bonding end of the module layer and exposing bonding pins of the bonding end; and wherein the open frame portion and the rim portion are combined to form a frame shape. ### Claim 12 (depends on 11) The method for manufacturing a flexible display module according to claim 11, wherein the module layer comprises a fixed region where the module layer is fixed to the first flexible material layer and/or the second flexible material layer, wherein the fixed region extends from the bonding end; wherein the method further comprises: fixing the module layer to the first flexible material layer and/or the second flexible material layer by an adhesive material in the fixed region. ### Claim 13 (depends on 11) The method for manufacturing a flexible display module according to claim 11, wherein the manufacturing, on a surface of the first flexible material layer, an open frame portion of the sealing layer comprises: manufacturing a sealing material layer on the surface of the first flexible material layer; and forming the open frame portion by cutting the sealing material layer by laser etching. ### Claim 14 (depends on 9) The method for manufacturing a flexible display module according to claim 9, wherein the sealing layer is adhered to the first flexible material layer and/or the second flexible material layer by an adhesive layer. ### Claim 15 (depends on 9) The method for manufacturing a flexible display module according to claim 9, wherein the sealing layer comprises at least one gas vent; wherein the attaching a second flexible material layer to a surface of the sealing layer comprises: attaching the second flexible material layer to the surface of the sealing layer along a direction at which the at least one gas vent extends outwardly; and sealing the at least one gas vent by a sealing material. ### Claim 16 A flexible display module, comprising: a first flexible material layer comprising a groove; a module layer disposed in the groove of the first flexible material layer; and a second flexible material layer disposed on the module layer; wherein the module layer is adhered within the groove of the first flexible material layer by an optical adhesive or attached by silicone oil, and a cross-sectional area of the groove is larger than a cross-sectional area of the module layer. ### Claim 17 (depends on 16) The flexible display module according to claim 16, wherein a periphery of the second flexible material layer and a side of the groove of the first flexible material layer are encapsulated by a laser-sintering glass frit process. ### Claim 18 (depends on 16) The flexible display module according to claim 16, wherein the second flexible material layer is adhered onto the module layer by an optical adhesive. ### Claim 19 A flexible display module, comprising: a first flexible material layer and a second flexible material layer stacked on the first flexible layer; a sealing layer disposed between the first flexible material layer and the second flexible material layer, the sealing layer having a hollow defined in a middle thereof; and a module layer disposed in the hollow of the sealing layer, wherein an area of a bottom area of the hollow is larger than an area of the module layer, a first silicone oil layer disposed between the module layer and the first flexible material layer. ### Claim 20 (depends on 19) The flexible display module according to claim 19, further comprising: a second silicone oil layer disposed between the module layer and the second flexible material layer.