公开(公告)号：US20210332296A1

公开(公告)日：2021-10-28

申请号：US16607217

申请日：2019-04-24

Applicant: BOE TECHNOLOGY GROUP CO., LTD,

Inventor： Rui LI ,  Haiyan SUN ,  Hao MIAO ,  Pengiu ZHANG ,  Mingxing LIU ,  Hong ZHU ,  Yajie WANG ,  Jingzhe FANG

IPC: C09K19/34 ,  C09K19/30

Abstract: A liquid crystal composition and a display device are provided. The liquid crystal composition includes a compound having a structure represented by general formula (I) and a compound having a structure represented by general formula (II), and L11, L2, L3 and L4 are independently selected from Z1 is selected from a single bond or —C≡C—; R1, R2 and R3 are independently selected from alkyl, alkenyl, alkynyl, haloalkyl or OR4; and R4 is selected from alkyl, alkenyl, alkynyl or haloalkyl.

公开(公告)号：US20190243191A1

公开(公告)日：2019-08-08

申请号：US16177901

申请日：2018-11-01

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Mingxing LIU ,  Pengju ZHANG ,  Hong ZHU ,  Hao MIAO ,  Haiyan SUN ,  Rui LI

IPC: G02F1/1343 ,  G02F1/1337 ,  G02F1/1339

CPC classification number: G02F1/134309 ,  G02F1/13378 ,  G02F1/1339 ,  G02F2203/50

Abstract: This disclosure provides liquid crystal phase shifter, phase shifting method, and method of fabricating the liquid crystal phase shifter. The phase shifter comprises: a first substrate and a second substrate arranged in cell-aligned manner; a first electrode layer arranged on a side of the first substrate facing the second substrate; a second electrode layer arranged on a side of the second substrate facing the first substrate, and comprising electrically isolated electrode plates; and isolation zones arranged between the first electrode layer and the second substrate, wherein the isolation zones, the first electrode layer, and the second electrode layer form independent sealing areas, wherein each of the electrode plates corresponds to respective one of the sealing areas, and liquid crystal layers are sealed in the sealing areas, wherein dielectric constants of the liquid crystal layers in each sealing area are not exactly the same.

公开(公告)号：US20190235344A1

公开(公告)日：2019-08-01

申请号：US16205689

申请日：2018-11-30

Applicant: BOE Technology Group Co., Ltd.

Inventor： Hao MIAO ,  Pengju ZHANG ,  Mingxing LIU ,  Hong ZHU ,  Haiyan SUN

IPC: G02F1/169 ,  G02F1/00 ,  G02F1/01

CPC classification number: G02F1/169 ,  G02F1/0063 ,  G02F1/0102

Abstract: The present disclosure provides a display panel and a display device. The display panel includes a first substrate and a second substrate which are aligned with each other, and a dispersion containing a two-dimensional material arranged between the first substrate and the second substrate. The display panel provided by the present disclosure can achieve a different gray scale display and thus may replace liquid crystal display.

公开(公告)号：US20240407187A1

公开(公告)日：2024-12-05

申请号：US18268610

申请日：2022-04-21

Applicant: BOE Technology Group Co., Ltd.

Inventor： Haiyan SUN ,  Xiaojin ZHANG ,  Dan WANG ,  Siqi WANG

IPC: H10K50/12 ,  H10K101/00 ,  H10K101/30

Abstract: The disclosure provides an organic light-emitting device and a display device, which belong to the field of display technology. The organic light-emitting device includes a light-emitting layer (600), including a first host material, a second host material, at least one auxiliary material, and at least one dopant material; the first host material and the second host material form a first composite transport material; the auxiliary material and the second host material form the second composite transport material; S1(A)>S1(CH)>S1(C); T1(A)>T1(CH)>T1(C); S1(A) is the lowest singlet state energy of the host material, S1(CH) is the lowest singlet state energy of the composite transport material, S1(C) is the lowest singlet state energy of the dopant material; T1(A) is the lowest triplet state energy of the host material, T1(CH) is the lowest triplet state energy of the composite transport material, and T1(C) is the lowest triplet state energy of the dopant material.

公开(公告)号：US20240224554A1

公开(公告)日：2024-07-04

申请号：US17914337

申请日：2021-10-28

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Yong WU ,  Xiaojin ZHANG ,  Haiyan SUN

IPC: H10K50/11 ,  H10K50/18 ,  H10K85/60 ,  H10K101/10 ,  H10K101/30 ,  H10K102/00

CPC classification number: H10K50/11 ,  H10K50/181 ,  H10K85/6572 ,  H10K85/6574 ,  H10K85/658 ,  H10K2101/10 ,  H10K2101/30 ,  H10K2102/351

Abstract: The present disclosure provides an organic electroluminescent device and a display device, belonging to the field of display technology, which can solve the problem of poor luminescent efficiency and short life of the existing organic electroluminescent devices. The organic electroluminescent device of the present disclosure comprises: a first electrode and a second electrode disposed opposite to each other, and a light-emitting layer located between the first electrode and the second electrode; the light-emitting layer comprising: a first compound, a second compound and a third compound; wherein the first compound satisfies a first general formula; the third compound satisfies a second general formula; and the second compound has a difference between a triplet energy level and a singlet energy level of less than or equal to 0.3 eV.

公开(公告)号：US20230096510A1

公开(公告)日：2023-03-30

申请号：US17789683

申请日：2021-09-01

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Haiyan SUN ,  Xiaojin ZHANG

IPC: H01L51/50 ,  H01L51/00

Abstract: The embodiments of the present disclosure provide a light-emitting device and a display substrate, which belong to the technical field of organic light-emitting diodes. The light-emitting device of the present disclosure comprises: a first light-emitting layer comprising a first host material and a first guest material; and a second light-emitting layer comprising a second host material and a second guest material; S1(h1)>S1(g1), T1(h1)>T1(g1), S1(g1)−T1(g1)≤0.1 eV; S1(h2)>S1(g2), T1(h2)>T1(g2), S1(g2)−T1(g2)≤0.1 eV; S1(h1)≥S1(h2)>S1(g1)>S1(g2), T1(h1)≥T1(h2)>T1(g1)>T1(g2); the second guest material is a TADF material; at least 40% of the area in a region covered under the emission spectrum of the first light-emitting layer overlaps with the region covered under the absorption spectrum of the second light-emitting layer.

公开(公告)号：US20220190272A1

公开(公告)日：2022-06-16

申请号：US17260563

申请日：2020-04-09

Applicant: BOE Technology Group Co., Ltd.

Inventor： Haiyan SUN ,  Meishan XU ,  Xiaojin ZHANG ,  Changho LEE ,  Dan WANG

IPC: H01L51/50 ,  H01L27/32

Abstract: An OLED display substrate includes a base substrate with a display region arranged thereon. First, second and third sub-pixels are arranged in the display region. A first electrode layer, a pixel defining layer, a second electrode layer, and organic functional layers are arranged in the display region. The organic functional layers include first, second and third light-emitting layers. The first light-emitting layer covers the display region and is an integral structure. The second and third light-emitting layers are arranged on a side of the first light-emitting layer towards the second electrode layer. An orthographic projection of each sub light-emitting layer of the second and third light-emitting layers on the base substrate completely covers an orthographic projection of an opening of the pixel defining layer on the base substrate, and does not overlap with orthographic projections of other openings of the pixel defining layer on the base substrate.

公开(公告)号：US20220131101A1

公开(公告)日：2022-04-28

申请号：US17509788

申请日：2021-10-25

Applicant: Chengdu BOE Optoelectronics Technology Co., Ltd. ,  BOE Technology Group Co., Ltd.

Inventor： Huiyun YANG ,  Xiaojin ZHANG ,  Haiyan SUN

IPC: H01L51/50 ,  H01L51/56

Abstract: Provided is an organic light emitting device, including a p-type host layer, an n-type host layer, and an interlayer disposed between the p-type host layer and the n-type host layer, wherein at least one of the p-type host layer and the n-type host layer includes a fluorescent dopant, and a preset distance is present between the fluorescent dopant and the interlayer; the p-type host layer and the n-type host layer are configured to form, together with the interlayer, a spatially separated exciplex under an action of driving voltage; and the fluorescent dopant is configured to absorb energy of singlet excitons generated by the exciplex to emit light.

公开(公告)号：US20220115460A1

公开(公告)日：2022-04-14

申请号：US17262192

申请日：2020-04-09

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Haiyan SUN ,  Meishan XU ,  Xiaojin ZHANG ,  Changho LEE ,  Dan WANG

IPC: H01L27/32 ,  H01L51/50

Abstract: The present disclosure provides a display substrate and a display panel. The display substrate comprises: a base substrate, a first electrode layer, a first light-emitting layer, a first common connection layer, a second light-emitting layer, a third light-emitting layer, and a second electrode layer. The first electrode layer is provided on a side of the base substrate; the first light-emitting layer is provided on a side of the first electrode layer away from the base substrate; the first common connection layer is provided on a side of the first light-emitting layer away from the first electrode layer, and comprises a plurality of first sub-common connection layers; each second sub-light-emitting layer of the second light-emitting layer is provided on a side of each first sub-common connection layer away from the first light-emitting layer in one-to-one correspondence.

公开(公告)号：US20210391552A1

公开(公告)日：2021-12-16

申请号：US17344809

申请日：2021-06-10

Applicant: BOE Technology Group Co., Ltd.

Inventor： Xinghua LIU ,  Xiaojin ZHANG ,  Haiyan SUN

IPC: H01L51/50

Abstract: Organic luminescent material, includes: host material, TADF sensitizer, and fluorescent-luminescent material; wherein absolute value of difference between LUMO level of the host material and LUMO level of the TADF sensitizer is not more than 0.4 eV, and absolute-value of difference between HOMO level of the host material and HOMO level of the TADF sensitizer is not more than 0.4 eV; absolute-value of LUMO level of the fluorescent-luminescent material is not more than absolute-value of the LUMO level of the host material and the LUMO level of the TADF sensitizer, and/or absolute-value of HOMO level of the fluorescent-luminescent material is not less than an absolute-value of the HOMO level of the host material and absolute-value of the HOMO level of the TADF sensitizer; and emission-spectrum of the host material overlaps an absorption-spectrum of the TADF sensitizer, and emission-spectrum of the TADF sensitizer overlaps absorption-spectrum of the fluorescent-luminescent material.