# US 12,225,766 B2 · Display device and manufacturing method therefor > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,225,766 B2 - Document ID: US12225766B2 - Status: Granted - Kind: B2 - Application number: 17/602,575 - Filed: 2019-11-26 - Published: 2022-06-09 - Granted: 2025-02-11 - Earliest claimed: 2019-04-10 - Assignees: Samsung Display Co., Ltd. - Applicants: Samsung Display Co., LTD. - Inventors: Seon Beom Ji; Min Soo Kim; Seung Min Lee - Web page: https://patentgrep.com/patent/US12225766B2 ## CPC - H10K 59/1201: {Manufacture or treatment} - G02F 1/13: based on liquid crystals, e.g. single liquid crystal display cells - G02F 1/1333: Constructional arrangements; {Manufacturing methods}(G02F1/135, G02F1/136 take precedence) - H10K 59/871: {Self-supporting sealing arrangements} - H10K 77/111: {Flexible substrates} - H10K 2102/311: {Flexible OLED} - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES - 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 A display device includes: a display region and a non-display region surrounding the display region; a first bending line defined on the display region, where the first bending line includes a portion extending in a first direction; a first region located at one side of the first bending line; a second region located at the other side of the first bending line and bent from the first region in one direction; a first alignment mark disposed in the first area and having a first area; and a second alignment mark disposed in the second area and facing toward the first alignment mark while the first bending line is disposed between the first and second alignment marks. The second alignment mark has a second area different from the first area. ## Claims ### Claim 1 A display device comprising: a display area and a non-display area surrounding the display area; a first bending line defined on the display area, wherein the first bending line includes a portion extending in a first direction; a first area located at one side around the first bending line; a second area located at an opposite side around the first bending line, wherein the second area is bent in one direction relative to the first area and from the first bending line; a first alignment mark disposed in the first area and having a first alignment mark area; and a second alignment mark disposed in the second area and facing toward the first alignment mark while the first bending line is disposed between the first and second alignment marks, wherein the second alignment mark has a second alignment mark area different from the first alignment mark area, wherein the display area includes: a first display area disposed in the first area around the first bending line; and a second display area disposed in the second area around the first bending line, wherein the first alignment mark is disposed in the first display area, and the second alignment mark is disposed in the second display area. ### Claim 2 (depends on 1) The display device of claim 1, wherein a first side of the first alignment mark and a second side of the second alignment mark contact each other at the first bending line, wherein the second area is larger than the first area. ### Claim 3 (depends on 2) The display device of claim 2, wherein a first second-directional dimension of the first alignment mark measured in a second direction perpendicular to the first direction is smaller than a second second-directional dimension of the second alignment mark measured in the second direction. ### Claim 4 (depends on 3) The display device of claim 3, wherein a first first-directional dimension of the first alignment mark measured in the first direction is smaller than a second first-directional dimension of the second alignment mark measured in the first direction. ### Claim 5 (depends on 2) The method of claim 2, wherein an imaginary reference surface parallel to the first area and spaced apart from the first area in a third direction in which the second area is bent is defined, wherein a size of a first orthogonal projection area of the first alignment mark projected in the third direction onto the imaginary reference surface is the same as a size of a second orthogonal projection area of the second alignment mark projected in the third direction onto the imaginary reference surface. ### Claim 6 (depends on 5) The display device of claim 5, further comprising: a third alignment mark spaced apart from and facing toward the first alignment mark while the first bending line is disposed therebetween, wherein the third alignment mark is disposed in the second area, and has a third area larger than the second area. ### Claim 7 (depends on 6) The display device of claim 6, wherein a size of a third orthogonal projection area of the third alignment mark projected in the third direction onto the imaginary reference surface is the same as each of the size of the first orthogonal projection area and the size of the second orthogonal projection area. ### Claim 8 (depends on 1) The display device of claim 1, further comprising: a second bending line extending in a second direction perpendicular to the first direction, wherein the second bending line intersects the first bending line, and the first area is disposed at one side around the second bending line; and a third area located at an opposite side around the second bending line, wherein the third area is bent in one direction relative to the first area and from the second bending line, wherein the display area further includes a third display area disposed in the third area around the second bending line. ### Claim 9 (depends on 8) The display device of claim 8, further comprising: a fourth alignment mark disposed in the first area and having a fourth area; and a fifth alignment mark disposed in the third area and facing toward the fourth alignment mark while the second bending line is disposed between the fourth and fifth alignment marks, wherein the fifth alignment mark has a fifth area different from the fourth area. ### Claim 10 (depends on 8) The display device of claim 8, wherein the non-display area includes: a first non-display area extending in the first direction, disposed in the second area, and located on one side of the second display area; a second non-display area extending in the second direction, disposed in the third area, and located on one side of the third display area; and a third non-display area located in an area where the first non-display area and the second non-display area intersect with each other, wherein a bending intersection point as an intersection point between the first bending line and the second bending line is disposed at a boundary between the third non-display area and the first display area. ### Claim 11 (depends on 10) The display device of claim 10, further comprising: a sixth alignment mark disposed in the first area, having a sixth area, and having a sixth side contacting the bending intersection point; and a seventh alignment mark disposed in the third non-display area and facing toward the sixth alignment mark while the bending intersection point is disposed between the sixth and seventh alignment marks, wherein the seventh alignment mark has a seventh area different from the sixth area. ### Claim 12 (depends on 11) The display device of claim 11, further comprising: an eighth alignment mark spaced from the first bending line and the second bending line and disposed in the third non-display area, wherein the eight alignment mark has an eighth area larger than the seventh area. ### Claim 13 A display device comprising: a first bending line extending in a first direction; a second bending line extending in a second direction perpendicular to the first direction and intersecting the first bending line; a first area surrounded with the first bending line and the second bending line; a second area bent from the first bending line; a third area bent from the second bending line; a fourth area where the second area and the third area intersect with each other; a first alignment mark disposed on the first area and having a first alignment mark area; and a second alignment mark disposed in at least one selected from the second area, the third area and the fourth area, wherein the second alignment mark has a second alignment mark area larger than the first alignment mark area, the second alignment mark faces toward the first alignment mark, wherein the second alignment mark disposed in the second area and the first alignment mark contact each other at the first bending line. ### Claim 14 (depends on 13) The display device of claim 13, wherein the second alignment mark disposed in the third area and the first alignment mark contact with each other at the second bending line. ### Claim 15 (depends on 14) The display device of claim 14, wherein the second alignment mark disposed in the fourth area is spaced apart from each of the first bending line and the second bending line.