公开(公告)号：US11697764B2

公开(公告)日：2023-07-11

申请号：US17199616

申请日：2021-03-12

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Tae Gon Kim ,  Jongmin Lee ,  Jooyeon Ahn ,  Hyeyeon Yang ,  Shin Ae Jun

IPC: C09K11/70 ,  C09K11/02 ,  C09K11/62 ,  C22C30/06 ,  G02F1/017 ,  B82Y30/00 ,  H10K59/38 ,  B82Y20/00 ,  B82Y40/00 ,  G02F1/13357

CPC classification number: C09K11/703 ,  B82Y30/00 ,  C09K11/025 ,  C09K11/623 ,  C22C30/06 ,  G02F1/01791 ,  H10K59/38 ,  B82Y20/00 ,  B82Y40/00 ,  G02F1/133617

Abstract: A quantum dot, a production method thereof, and a quantum dot composite and a device including the same are disclosed, wherein the quantum dot includes an alloy semiconductor nanocrystal including indium (In), gallium, zinc (Zn), phosphorus (P), and sulfur (S), and in the quantum dot, a mole ratio of gallium with respect to indium (Ga:In) is greater than or equal to about 0.2:1, a mole ratio of phosphorus with respect to indium (P:In) is greater than or equal to about 0.95:1, the quantum dot does not include cadmium, and in an UV-Vis absorption spectrum of the quantum dot(s), a first absorption peak is present in a range of less than or equal to about 520 nm.

公开(公告)号：US11421151B2

公开(公告)日：2022-08-23

申请号：US15821007

申请日：2017-11-22

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Oul Cho ,  Jooyeon Ahn ,  Eun Joo Jang ,  Dae Young Chung ,  Hyun A Kang ,  Tae Hyung Kim ,  Yun Sung Woo ,  Jeong Hee Lee ,  Shin Ae Jun

IPC: C09K11/02 ,  H01L51/50 ,  H05B33/14 ,  C09K11/70 ,  C09K11/88 ,  F21V8/00 ,  C09K11/06 ,  H01L51/00 ,  B82Y20/00 ,  B82Y40/00

Abstract: A light emitting device including a semiconductor nanocrystal and a ligand bound to a surface of the semiconductor nanocrystal, wherein the ligand includes an organic thiol ligand or a salt thereof and a polyvalent metal compound including a metal including Zn, In, Ga, Mg, Ca, Sc, Sn, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Sr, Y, Zr, Nb, Mo, Cd, Ba, Au, Hg, Tl, or a combination thereof, and a display device including the light emitting device.

公开(公告)号：US11365348B2

公开(公告)日：2022-06-21

申请号：US16245653

申请日：2019-01-11

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Young Seok Park ,  Eun Joo Jang ,  Shin Ae Jun ,  Nayoun Won ,  Jooyeon Ahn ,  Sung Woo Kim

IPC: C09K11/70 ,  C09K11/02 ,  H01L27/32 ,  G02F1/13357 ,  F21V8/00 ,  C09K11/88 ,  H05B33/14

Abstract: A quantum dot includes a core including a first semiconductor nanocrystal and a multi-layered shell disposed on the core and including at least two layers, a production method thereof, and an electronic device including the same. The quantum dot does not include cadmium; the first semiconductor nanocrystal includes a Group III-V compound, the multi-layered shell includes a first layer surrounding at least a portion of a surface of the core, the first layer including a second semiconductor nanocrystal, the second semiconductor nanocrystal including a Group II-V compound, and a second layer disposed on the first layer, the second layer including a third semiconductor nanocrystal, the third semiconductor nanocrystal comprising a composition different from that of the second semiconductor nanocrystal.

公开(公告)号：US11352555B2

公开(公告)日：2022-06-07

申请号：US16532888

申请日：2019-08-06

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Shang Hyeun Park ,  Jong-Hoon Ka ,  Shin Ae Jun

IPC: C09K11/02 ,  C09K11/70 ,  C09K11/08 ,  G02F1/13357 ,  H01L27/32 ,  H01L51/50 ,  G02F1/1335

Abstract: A composition including a quantum dot, a dispersing agent for dispersing the quantum dot, a polymerizable monomer including a carbon-carbon double bond, an initiator, a hollow metal oxide particulate, and a solvent, and a quantum dot-polymer composite manufactured from the composition.

公开(公告)号：US11236270B2

公开(公告)日：2022-02-01

申请号：US16507406

申请日：2019-07-10

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Garam Park ,  Tae Gon Kim ,  Jooyeon Ahn ,  Ji-Yeong Kim ,  Nayoun Won ,  Shin Ae Jun

IPC: C09K11/88 ,  C09K11/02 ,  G02F1/13357 ,  H01L27/32

Abstract: Disclosed are a quantum dot and a quantum dot-polymer composite and a device including the same, wherein the quantum dot includes a semiconductor nanocrystal core including indium (In) and phosphorous (P), a first semiconductor nanocrystal shell disposed on the semiconductor nanocrystal core, the first semiconductor nanocrystal shell including zinc and selenium, and a second semiconductor nanocrystal shell disposed on the first semiconductor nanocrystal shell, the second semiconductor nanocrystal shell including zinc and sulfur, wherein the quantum dot does not include cadmium, wherein in the quantum dot, a mole ratio of sulfur with respect to selenium is less than or equal to about 2.5:1.

公开(公告)号：US20210343807A1

公开(公告)日：2021-11-04

申请号：US17372976

申请日：2021-07-12

Applicant: SAMSUNG ELECTRONICS CO., LTD. ,  SAMSUNG DISPLAY CO., LTD. ,  SAMSUNG SDI CO., LTD.

Inventor： Deukseok Chung ,  Sung Hun Lee ,  Tae Gon Kim ,  Shin Ae Jun

IPC: H01L27/32 ,  H01L51/50 ,  H01L51/52

Abstract: A display device includes a first electrode, a pixel define layer disposed on the first electrode, the pixel define layer including an opening, an organic emission layer disposed on the pixel define layer, the organic emission layer in electrical communication with the first electrode through the opening, a second electrode disposed on the organic emission layer, a light recycle layer disposed on the second electrode, and a color filter layer disposed on the light recycle layer, the color filter layer including a quantum dot, wherein a width of the organic emission layer is longer than a width of the color filter layer.

公开(公告)号：US11126028B2

公开(公告)日：2021-09-21

申请号：US15692906

申请日：2017-08-31

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Eun Joo Jang ,  Shin Ae Jun ,  Hyun A Kang

IPC: G02F1/1335 ,  G02F1/13357 ,  G02B5/30 ,  H01L29/12 ,  H01L29/66 ,  H01L31/0352

Abstract: A photoluminescent liquid crystal display includes: a liquid crystal panel including a lower substrate, an upper substrate, a liquid crystal layer interposed between the upper and lower substrates, and a photoluminescent color filter layer disposed between the upper substrate and the liquid crystal layer; an optical device disposed on the upper substrate; a polarizing plate disposed under the lower substrate; and a backlight unit disposed under the polarizing plate and which emits blue light, where the photoluminescent color filter layer includes a first color filter which emits polarized red light, a second color filter which emits polarized green light, and a third color filter which emits polarized blue light, and the first color filter and the second color filter include a semiconductor nanocrystal-polymer composite.

公开(公告)号：US11069751B2

公开(公告)日：2021-07-20

申请号：US16668699

申请日：2019-10-30

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Tae Gon Kim ,  Sung Hun Lee ,  Ji Whan Kim ,  Shin Ae Jun ,  Deukseok Chung

IPC: H01L21/00 ,  H01L33/00 ,  H01L27/32 ,  H01L51/52 ,  H01L51/56 ,  H01L31/0352 ,  H01L51/50

Abstract: A display device including a light source including a first electrode having a light reflectance for a first light of greater than or equal to about 60%; an organic light emitting layer disposed on the first electrode and emitting the first light; and a second electrode disposed on the organic light emitting layer and having a light transmittance in a visible wavelength region of greater than or equal to about 70%, wherein the light source has a first absorption peak in a wavelength region of about 650 nanometers (nm) to about 750 nm or a second absorption peak in a wavelength region of about 550 nm to about 600 nm at a viewing angle of about 55 degrees to about 85 degrees, and a color filter layer disposed above the light source and including a quantum dot configured to convert the first light into a second light.

公开(公告)号：US11046885B2

公开(公告)日：2021-06-29

申请号：US16223186

申请日：2018-12-18

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Tae Gon Kim ,  Deukseok Chung ,  Jooyeon Ahn ,  Shin Ae Jun

IPC: C09K11/02 ,  H05B33/22 ,  C08G77/04 ,  C09D183/08 ,  C08G77/28 ,  C09K11/70 ,  C08G77/388 ,  C09K11/56 ,  C09D183/10 ,  C08G77/38 ,  C09K11/08 ,  G02F1/1335 ,  G02F1/13357 ,  H01L27/32 ,  H01L51/52 ,  B82Y30/00 ,  B82Y40/00

Abstract: A layered structure including a photoluminescent layer including a quantum dot polymer composite; a light absorption layer disposed on the photoluminescent layer, the light absorption layer including an absorptive color-filter material; and a silicon containing layer disposed between the photoluminescent layer and the light absorption layer, wherein the quantum dot polymer composite includes a first polymer matrix and a plurality of quantum dots dispersed in the first polymer matrix, and the plurality of quantum dots absorb excitation light and emits light in a longer wavelength than the wavelength of the excited light; and the absorptive color-filter material is dispersed in a second polymer matrix, and the absorptive color-filter material absorbs the excitation light that passes through the photoluminescent layer and transmits the light emitted from the plurality of quantum dots and an electronic device including the same.

公开(公告)号：US20210139776A1

公开(公告)日：2021-05-13

申请号：US17092368

申请日：2020-11-09

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Taekhoon Kim ,  Nayoun Won ,  Tae Gon Kim ,  Mi Hye Lim ,  Shin Ae Jun ,  Shang Hyeun Park

IPC: C09K11/88 ,  C09K11/02 ,  H01L51/50

Abstract: A quantum dot-polymer composite including a polymer matrix; and core-shell quantum dots dispersed in the polymer matrix, wherein the core-shell quantum dots include a semiconductor nanocrystal core including indium, zinc, and phosphorus and a semiconductor nanocrystal shell disposed on the semiconductor nanocrystal core, the shell including zinc, selenium, and sulfur. The core-shell quantum dots do not include cadmium, the core-shell quantum dots are configured to emit green light, the core-shell quantum dots have a mole ratio of phosphorus to indium of greater than or equal to about 0.75, and the core-shell quantum dots have a mole ratio of zinc to indium of greater than or equal to about 35, and a method of producing the core-shell quantum dots, and a display device including a light emitting element that includes the quantum dot-polymer composite.