# US 10,483,491 B2 · Display apparatus and method of 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 10,483,491 B2 - Document ID: US10483491B2 - Status: Granted - Kind: B2 - Application number: 15/417,000 - Filed: 2017-01-26 - Published: 2017-09-14 - Granted: 2019-11-19 - Earliest claimed: 2016-03-11 - Assignees: Samsung Display Co., Ltd. - Applicants: Samsung Display Co., Ltd. - Inventors: Yoonsun Choi; Hyunchul Kim; Wonsuk Choi - Web page: https://patentgrep.com/patent/US10483491B2 ## CPC - G02F 1/133305: {Flexible substrates, e.g. plastics, organic film} - G02F 1/133351: {Manufacturing of individual cells out of a plurality of cells, e.g. by dicing} - H10K 59/871: {Self-supporting sealing arrangements} - H10K 71/80: using temporary substrates - H10K 77/111: {Flexible substrates} - G02F 1/133311: {Environmental protection, e.g. against dust or humidity} - H10K 59/1201: {Manufacture or treatment} - H10K 59/8731: {multilayered coatings having a repetitive structure, e.g. having multiple organic-inorganic bilayers} - H10K 71/851: {Division of substrate} - Y02E 10/549: Organic PV cells - Y02P 70/50: Manufacturing or production processes characterised by the final manufactured product - 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 - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION - Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS ## Abstract A method of manufacturing a display apparatus that is capable of reducing manufacturing costs and a defect rate during manufacturing, and a display apparatus. The method includes forming a plurality of display units over a mother substrate; attaching a temporary protective film to a lower surface of the mother substrate; cutting the mother substrate and the temporary protective film along a periphery of each of the plurality of display units to obtain a plurality of display panels, each including a first area, a second area, and a bent area between the first area and the second area; removing the temporary protective film from the plurality of display panels; and attaching a lower protective film to a lower surface of each of the plurality of display panels so as to correspond to the first area in each display panel. ## Claims ### Claim 1 A method of manufacturing a display apparatus, the method comprising: forming a plurality of display units over a mother substrate; attaching a temporary protective film to a lower surface of the mother substrate; cutting the mother substrate and the temporary protective film along a periphery of each of the plurality of display units to obtain a plurality of display panels, a display panel, of the plurality of display panels, comprising a substrate divided into a first area, a second area, and a bent area between the first area and the second area, a corresponding one of the plurality of display units being formed on the substrate in the first area, and a corresponding portion of the temporary protective film being attached to a lower surface of the substrate; removing the corresponding portion of the temporary protective film from the lower surface of the substrate; attaching a lower protective film to the lower surface of the substrate to correspond to the first area; bending the display panel in the bent area around a bending axis that crosses a virtual straight line connecting a center of the first area and a center of the second area so that a portion of the lower surface of the substrate in the first area and a portion of the lower surface of the substrate in the second area face each other and the corresponding one of the plurality of display units faces up; inserting a support layer between the lower protective film in the first area and the lower surface of the substrate in the second area; adhering a first surface of the support layer to the lower protective film in the first area; and directly adhering a second surface of the support layer opposite the first surface to the lower surface of the substrate in the second area without the lower protective film, such that a part of an upper surface of the display panel in the bent area protrudes past a first virtual plane including the upper surface of the display panel within the first area, in a direction toward the corresponding one of the plurality of display units. ### Claim 2 (depends on 1) The method of claim 1, wherein the attaching of the lower protective film comprises attaching the lower protective film having an area greater than an area of the first area to expose an exposed part of the lower protective film. ### Claim 3 (depends on 2) The method of claim 2, further comprising removing the exposed part of the lower protective film. ### Claim 4 (depends on 2) The method of claim 2, further comprising removing the exposed part of the lower protective film by irradiating the lower protective film with a laser beam. ### Claim 5 (depends on 1) The method of claim 1, wherein the forming of the plurality of display units comprises forming the mother substrate over a carrier substrate and forming the plurality of display units over the mother substrate; the method further comprising separating the mother substrate from the carrier substrate, wherein the attaching the temporary protective film comprises attaching the temporary protective film to a lower surface of the mother substrate, from which the carrier substrate is separated. ### Claim 6 (depends on 1) The method of claim 1, further comprising attaching a printed circuit board and/or an electronic chip to the second area of the substrate before removing the corresponding portion of the temporary protective film. ### Claim 7 (depends on 6) The method of claim 6, wherein a length of the second area is equal to a length of the printed circuit board or the electronic chip along a direction crossing a virtual straight line connecting a center of the first area to a center of the second area. ### Claim 8 A method of manufacturing a display apparatus, the method comprising: preparing a substrate having an upper surface and a lower surface and comprising a bent area between a first area and a second area by bending the substrate around a bending axis in the bent area so that a portion of the lower surface of the substrate in the first area and a portion of the lower surface of the substrate in the second area face each other; attaching a temporary protective film to the lower surface of the substrate throughout the first area, the bent area, and the second area; removing the temporary protective film; attaching a lower protective film to the lower surface of the substrate to correspond to the first area; forming a display unit over the substrate in the first area; inserting a support layer between the lower protective film in the first area and the lower surface of the substrate in the second area; adhering a first surface of the support layer to the lower protective film in the first area; and directly adhering a second surface of the support layer opposite the first surface to the lower surface of the substrate in the second area without the lower protective film, such that a part of the upper surface of the substrate in the bent area protrudes past a first virtual plane including the upper surface of the substrate within the first area, in a direction toward the display unit. ### Claim 9 (depends on 8) The method of claim 8, wherein the attaching of the lower protective film comprises attaching the lower protective film having an area greater than an area of the first area to the lower surface of the substrate to expose an exposed part of the lower protective film to outside of the substrate. ### Claim 10 (depends on 9) The method of claim 9, further comprising removing the exposed part of the lower protective film. ### Claim 11 (depends on 9) The method of claim 9, further comprising removing the exposed part of the lower protective film by irradiating the lower protective film with a laser beam. ### Claim 12 (depends on 8) The method of claim 8, further comprising attaching a printed circuit board and/or an electronic chip to the second area of the substrate before removing the temporary protective film. ### Claim 13 (depends on 12) The method of claim 12, wherein a length of the second area is equal to a length of the printed circuit board or the electronic chip along a direction crossing a virtual straight line connecting a center of the first area to a center of the second area. ### Claim 14 A display apparatus comprising: a substrate having an upper surface and a lower surface and comprising a bent area between a first area and a second area, the bent area being bent around a bending axis so that the lower surface of the substrate in the first area and the lower surface of the substrate in the second area at least partially face each other; a display unit over the upper surface of the substrate in the first area; a lower protective film over the lower surface of the substrate in at least a part of the first area; and a support layer between the lower protective film in the first area and the lower surface of the substrate in the second area, wherein a first surface of the support layer is adhered to the lower protective film in the first area, and a second surface of the support layer opposite the first surface is directly adhered to the lower surface of the substrate in the second area without the lower protective film, and wherein a part of the upper surface of the substrate in the bent area protrudes past a first virtual plane including the upper surface of the substrate where the display unit is located within the first area, in a direction toward the display unit. ### Claim 15 (depends on 14) The display apparatus of claim 14, wherein a distance between the lower surface of the substrate in the first area where the support layer is located and the lower surface of the substrate in the second area where the support layer is located is less than a maximum distance between facing portions of the lower surface of the substrate in the bent area. ### Claim 16 (depends on 15) The display apparatus of claim 15, wherein a part of the upper surface of the substrate in the bent area protrudes past a second virtual plane including the upper surface of the substrate where the support layer is located within the second area, in a direction away from the display unit. ### Claim 17 (depends on 14) The display apparatus of claim 14, wherein the first surface of the support layer adhered to the lower protective film in the first area has an area that is different from an area of the second surface of the support layer directly adhered to the lower surface of the substrate in the second area. ### Claim 18 (depends on 14) The display apparatus of claim 14, wherein the first surface of the support layer adhered to the lower protective film in the first area has an area that is greater than an area of the second surface of the support layer directly adhered to the lower surface of the substrate in the second area. ### Claim 19 (depends on 14) The display apparatus of claim 14, further comprising: an electronic device on a portion of the upper surface of the substrate in the second area where the support layer is located; and a reinforcing film over the upper surface of the substrate in the second area adjacent to the electronic device. ### Claim 20 (depends on 19) The display apparatus of claim 19, wherein the reinforcing film covers all of an exposed part of the upper surface of the substrate in the second area around the electronic device.