# US 2021/0242364 A1 · Method of producing light-emitting device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0242364 A1 - Document ID: US20210242364A1 - Status: Published application - Kind: A1 - Application number: 17/161,365 - Filed: 2021-01-28 - Published: 2021-08-05 - Earliest claimed: 2020-01-31 - Assignees: Nichia Corporation - Applicants: Nichia Corporation - Inventors: Shimpei MAEDA - Web page: https://patentgrep.com/patent/US20210242364A1 ## CPC - H10H 20/01: Manufacture or treatment - H10H 20/018: {Bonding of wafers} - H10W 90/00: Package configurations - H10H 20/0361: {of wavelength conversion means} - H10H 20/0363: {of optical field-shaping means} - H10H 20/0364: {of interconnections} - H10H: INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS - H10W: GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10 ## Abstract A method for producing a light-emitting device includes: bonding a plurality of light-emitting elements to a plate-shaped light transmission member all at once with the plurality of light-emitting elements being arranged in a two-dimensional array extending in a first direction and a second direction; capturing an image of the plurality of light-emitting elements bonded to the light transmission member, and forming an alignment mark on the light transmission member based on positions in the image of the plurality of light-emitting elements; and after the forming of the alignment mark, forming a contact member in contact with a corresponding one of the plurality of light-emitting elements with the contact member being positioned with respect to the plurality of light-emitting elements by using the alignment mark. ## Claims ### Claim 1 A method for producing a light-emitting device, comprising: bonding a plurality of light-emitting elements to a plate-shaped light transmission member all at once with the plurality of light-emitting elements being arranged in a two-dimensional array extending in a first direction and a second direction; capturing an image of the plurality of light-emitting elements bonded to the light transmission member, and forming an alignment mark on the light transmission member based on positions in the image of the plurality of light-emitting elements; and after the forming of the alignment mark, forming a contact member in contact with a corresponding one of the plurality of light-emitting elements with the contact member being positioned with respect to the plurality of light-emitting elements by using the alignment mark. ### Claim 2 (depends on 1) The method according to claim 1, wherein the forming of the contact member includes at least one of: forming a bump as the contact member on a face of each of the plurality of light-emitting elements opposite to a face of each of the light-emitting elements to which the light transmission member is bonded; and forming a light guide member as the contact member on the light transmission member so as to cover a lateral face of each of the plurality of light-emitting element. ### Claim 3 (depends on 2) The method according to claim 2, further comprising after the forming the contact member, cutting the light transmission member into a plurality of pieces by using the alignment mark such that at least one of the light-emitting elements is included in each of the plurality of pieces, to obtain a plurality of light-emitting devices. ### Claim 4 (depends on 1) The method according to claim 1, wherein the bonding of the plurality of light-emitting elements to the light transmission member further includes: disposing the plurality of light-emitting elements in the two-dimensional array on a support member; and bringing the plurality of light-emitting elements disposed on the support member into contact with the light transmission member. ### Claim 5 (depends on 1) The method according to claim 1, wherein the light transmission member contains a wavelength conversion substance. ### Claim 6 (depends on 1) The method according to claim 1, wherein the forming of the alignment mark includes forming the alignment mark on outside of a bonding region of the light transmission member in which the plurality of light-emitting elements are bonded. ### Claim 7 (depends on 1) The method according to claim 1, wherein the forming of the alignment mark includes forming a groove as the alignment mark on a face of the light transmission member to which the light-emitting elements are bonded. ### Claim 8 (depends on 7) The method according to claim 7, wherein the forming of the alignment mark includes forming the groove using a dicing saw. ### Claim 9 (depends on 1) The method according to claim 1, wherein the forming of the alignment mark includes: determining, in the image, a first approximation straight line passing through two or more of the plurality of light-emitting elements aligned in the first direction, and a second approximation straight line passing through two or more of the plurality of light-emitting elements aligned in the second direction; determining, in the image, a first axis parallel to the first approximation straight line, a second axis parallel to the second approximation straight line, and reference positions located on the first axis and the second axis; and forming the alignment mark on the light transmission member based on the reference positions in the image. ### Claim 10 (depends on 1) The method according to claim 1, wherein the bonding of the plurality of light-emitting elements to the light transmission member includes bonding the plurality of the light emitting elements to the light transmission member having no alignment mark. ### Claim 11 A method for producing a light-emitting device, comprising: bonding a plurality of light-emitting elements arranged in a two-dimensional array, all at once, to a plate-shaped light transmission member having an alignment mark identifying a position of a first coordinate point; capturing an image of the plurality of light-emitting elements bonded to the light transmission member, determining a position of a second coordinate point of the light transmission member based on positions in the image of the plurality of light-emitting elements, and calculating information about positional offset between the second coordinate point determined and the first coordinate point identified by the alignment mark of the light transmission member; and after the calculating of the information about the positional offset, forming a contact member in contact with a corresponding one of the plurality of light-emitting elements with the contact member being positioned with respect to the plurality of light-emitting elements by using the alignment mark of the light transmission member and the information about the positional offset.