IP Library › Granted Patent US 12,514,060
Granted Patent B2
US 12,514,060 · App. 17/726,978 · Granted Dec 30, 2025

Method of manufacturing display device

Inventors: Kang Soo Han (Seoul, KR); Kanguk Kim (Hwaseong-si, KR); Dongjun Lee (Yongin-si, KR); Songee Lee (Seoul, KR); Sangyeon Hwang (Anyang-si, KR)
Assignee: SAMSUNG DISPLAY CO., LTD.
H10K59/12H10K71/135H10K50/865
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Quick Facts
Patent No.
US 12,514,060
App. No.
17/726,978
Granted
Dec 30, 2025
Kind
B2
Abstract

A method of manufacturing a display device, which is provided using an inkjet apparatus that provides a liquid composition including a scatterer, includes performing j scanning stages to provide a first composition to i unit display areas among n unit display areas (j is a natural number equal to or greater than 2), and performing a first compensation-scanning stage to provide the first composition to first to (i−1)-th unit display areas among the n unit display areas. The i unit areas of the first head unit provide the first composition to the first unit display area to an i-th unit display area among the n unit display areas in a first scanning stage among the j scanning stages. The first head unit is shifted in the second direction by one unit display area in every scanning stage of the j scanning stages.

Claims (51)

1 . A method of manufacturing a display device using an inkjet apparatus which provides a liquid composition comprising a scatterer, the display device comprising a display substrate comprising n unit display areas extending in a first direction and arranged in a second direction crossing the first direction, and the inkjet apparatus comprising a first head unit comprising i unit areas, each of which corresponds to one unit display area, wherein n is a natural number equal to or greater than 12, and i is a natural number equal to or greater than 2, the method comprising:

performing j scanning stages to provide a first composition to i unit display areas among then unit display areas, wherein j is a natural number equal to or greater than 2; and

performing a first compensation-scanning stage to provide the first composition to first to (i−1)-th unit display areas among the n unit display areas,

wherein the i unit areas of the first head unit provide the first composition to the first unit display area to an i-th unit display area among the n unit display areas in a first scanning stage among the j scanning stages, and

the first head unit is shifted in the second direction by one unit display area in every scanning stage of the j scanning stages.

2 . The method of claim 1 , wherein

the first compensation-scanning stage comprises a plurality of compensation-scanning stages, and

the compensation-scanning stages of the first compensation-scanning stage comprises a beginning compensation-scanning stage in which (i−1) unit areas among the i unit areas of the first head unit provide the first composition to the first to (i−1)-th unit display areas among the n unit display areas.

3 . The method of claim 2 , wherein the first head unit is shifted in a direction opposite to the second direction by the one unit display area in every compensation-scanning stage of the compensation-scanning stages.

4 . The method of claim 1 , wherein the unit areas, which do not overlap the first to (i−1)-th unit display areas, among the i unit areas of the first head unit do not provide the first composition in the first compensation-scanning stage.

5 . The method of claim 1 , further comprising:

performing a second compensation-scanning stage to provide the first composition to (n−(i−2))-th to n-th unit display areas among the n unit display areas.

6 . The method of claim 5 , wherein the second compensation-scanning stage is consecutively performed following a j-th scanning stage among the j scanning stages.

7 . The method of claim 5 , wherein

the second compensation-scanning stage comprises a plurality of compensation-scanning stages, and

the compensation-scanning stages of the second compensation-scanning stage comprises a beginning compensation-scanning stage in which i−1 unit areas among the i unit areas of the first head unit provide the first composition to the (n−(i−2))-th to n-th unit display areas among the n unit display areas.

8 . The method of claim 7 , wherein the first head unit is shifted in the second direction by the one unit display area in every compensation-scanning stage of the compensation-scanning stages.

9 . The method of claim 1 , wherein

the inkjet apparatus further comprises a second head unit comprising i unit areas, and

the second head unit provides a second composition different from the first composition to the i unit display areas.

10 . The method of claim 1 , further comprising:

allowing the first head unit to provide the first composition to an outside of the display substrate before the j scanning stages.

11 . The method of claim 1 , wherein

the inkjet apparatus further comprises a tank which stores the first composition, and

the first composition stored in the tank is circulated through an external path by a pump.

12 . The method of claim 1 , wherein

the inkjet apparatus further comprises a tank which stores the first composition, and

the first composition stored in the tank is circulated inside the tank by a stirrer.

13 . A method of manufacturing a display device using an inkjet apparatus that provides a liquid composition comprising a resin composition and particles dispersed in the resin composition, the display device comprising a display substrate comprising n unit display areas extending in a first direction and arranged in a second direction crossing the first direction, the inkjet apparatus comprising a first head unit and a second head unit spaced apart from the first head unit in the second direction, and each of the first and second head units comprising i unit areas each of which corresponds to one unit display area, wherein n is a natural number equal to or greater than 12, and i is a natural number equal to or greater than 2, the method comprising:

performing j scanning stages to provide a first composition to i unit display areas among the n unit display areas, wherein j is a natural number equal to or greater than 2; and

performing a first compensation-scanning stage to provide the first composition to first to (i−1)-th unit display areas among the n unit display areas,

wherein the i unit areas of the first head unit provide the first composition to the first unit display area to an i-th unit display area among the n unit display areas in a first scanning stage among the j scanning stages,

the first head unit and the second head unit are shifted in the second direction by one unit display area in every scanning stage of the j scanning stages, and

the first composition is provided using the first head unit or the second head unit in the first compensation-scanning stage.

14 . The method of claim 13 , wherein

the inkjet apparatus further comprises a third head unit disposed between the first head unit and the second head unit, the third head unit comprises i unit areas, and

the third head unit provides a second composition different from the first composition to the i unit display areas.

15 . The method of claim 13 , wherein

the first head unit and the second head unit are spaced apart from each other by k unit display areas in the second direction, wherein k is a natural number equal to or greater than 2, and

the first head unit and the second head unit are shifted in the second direction by (i+k+1) unit display areas after the first head unit and the second head unit are scanned by j times.

16 . The method of claim 15 , wherein

j is equal to 3i, and

k is equal to 2i.

17 . The method of claim 13 , further comprising

performing a second compensation-scanning stage to provide the first composition to (n−(i−2))-th to n-th unit display areas among the n unit display areas,

wherein the first composition is provided using the first head unit or the second head unit in the second compensation-scanning stage.

18 . The method of claim 17 , wherein the first compensation-scanning stage is performed using the first or second head unit which is used in the second compensation-scanning stage.

19 . The method of claim 17 , wherein

the second compensation-scanning stage comprises a plurality of compensation-scanning stages, and

the compensation-scanning stages of the second compensation-scanning stage comprises a beginning compensation-scanning stage in which (i−1 unit areas among the i unit areas of the first head unit or the second head unit provide the first composition to the (n−(i−2))-th to n-th unit display areas among the n unit display areas.

20 . The method of claim 19 , wherein the first head unit or the second head unit is shifted in the second direction by the one unit display area in every compensation-scanning stage of the compensation-scanning stages.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 5, 2023
From: HAN, KANG SOO; KIM, KANGUK; LEE, DONGJUN; LEE, SONGEE; HWANG, SANGYEON
To: SAMSUNG DISPLAY CO., LTD.
Reel/Frame 063546/0403 →
Priority Claims (1)
KR 10-2021-0091252 · Jul 12, 2021 · national
Continuity (1)
Related Publication 20230019886A1 · Jan 19, 2023
References Cited (11)
US 7795800B2 · Lee et al. · 2010 [cited by applicant]
US 9579905B2 · Ko et al. · 2017 [cited by applicant]
US 9919539B2 · Sugai et al. · 2018 [cited by applicant]
US 20070247480A1 · Kwon et al. · 2007 [cited by applicant]
US 20160159113A1 · Ko · 2016 [cited by examiner]
US 20220258465A1 · Han · 2022 [cited by examiner]
JP 2016120603A · 2016 [cited by applicant]
JP 2016155062A · 2016 [cited by applicant]
KR 1020050068819A · 2005 [cited by applicant]
KR 1020070104746A · 2007 [cited by applicant]
KR 1020200084476A · 2020 [cited by applicant]