公开(公告)号：US11730035B2

公开(公告)日：2023-08-15

申请号：US17253093

申请日：2020-06-30

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Ling Wang ,  Yicheng Lin ,  Guoying Wang ,  Ying Han

IPC: H01L27/32 ,  H10K59/35 ,  H10K50/86 ,  H10K59/60 ,  H10K59/131 ,  H10K71/00 ,  H10K59/12

CPC classification number: H10K59/353 ,  H10K50/865 ,  H10K59/131 ,  H10K59/60 ,  H10K71/00 ,  H10K59/1201

Abstract: Provided are a display substrate, a manufacturing method thereof and a display device. The display substrate includes a base and a plurality of subpixels arranged on the base in an array form. Each subpixel includes a light-emitting element, a subpixel driving circuitry coupled to the light-emitting element, and a light-emission detection circuitry configured to detect luminescence of light emitted by the light-emitting element. The light-emission detection circuitry includes a first control transistor and a PIN-type photodiode laminated in that order in a direction away from the base, a first electrode of the first control transistor is coupled to a cathode of the PIN-type photodiode, and an orthogonal projection of the first control transistor onto the base at least partially overlaps an orthogonal projection of the PIN-type photodiode onto the base. The display substrate provided by the present disclosure is used for display.

公开(公告)号：US20230147375A1

公开(公告)日：2023-05-11

申请号：US16971673

申请日：2019-11-04

Applicant: BOE Technology Group Co., Ltd.

Inventor： Guoying Wang ,  Yicheng Lin ,  Ling Wang ,  Zhen Song ,  Pan Xu ,  Xing Zhang ,  Ying Han ,  Zhan Gao

IPC: H10K59/13 ,  H10K59/126 ,  H10K59/124 ,  H10K59/121 ,  H10K59/131 ,  H10K59/38

CPC classification number: H01L27/3269 ,  H01L27/322 ,  H01L27/3258 ,  H01L27/3262 ,  H01L27/3272 ,  H01L27/3276 ,  H01L2227/323

Abstract: A display substrate having a plurality of subpixels is provided. A respective one of the plurality of subpixels includes alight emitting element; a first thin film transistor configured to driving light emission of the light emitting element; and a light emitting brightness value detector. The light emitting brightness value detector includes a second thin film transistor; and a photosensor electrically connected to the second thin film transistor and configured to detect a light emitting brightness value. The display substrate further includes a silicon organic glass layer on a side of at least one of the first thin film transistor or the second thin film transistor away from a base substrate; and the photosensor is on a side of the silicon organic glass layer away from the base substrate.

公开(公告)号：US20230031110A1

公开(公告)日：2023-02-02

申请号：US17788387

申请日：2021-08-04

Applicant: BOE Technology Group Co., Ltd.

Inventor： Ying Han ,  Yicheng Lin ,  Ling Wang ,  Guoying Wang ,  Xing Zhang ,  Zhan Gao ,  Pan Xu

IPC: H01L27/32 ,  H01L51/52 ,  H01L27/12

Abstract: The display substrate includes: a substrate; a plurality of pixel units on the substrate, each pixel unit includes a plurality of sub-pixels, each sub-pixel includes a light-emitting element and a pixel drive circuit; a photosensitive circuit on the substrate; a first conductive film layer on the substrate. The pixel drive circuit includes a drive transistor, a gate electrode of the drive transistor is located on a side of a drive active layer away from the substrate, an orthographic projection of the gate electrode of the drive transistor on the substrate at least partially overlaps an orthographic projection of the drive active layer on the substrate. The first conductive film layer includes a first light-shielding portion between the substrate and the drive active layer, and an orthographic projection of the first light-shielding portion on the substrate at least partially overlaps the orthographic projection of the drive active layer on the substrate.

公开(公告)号：US11361712B2

公开(公告)日：2022-06-14

申请号：US16959011

申请日：2019-12-12

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Pan Xu ,  Yicheng Lin ,  Guoying Wang ,  Ling Wang

IPC: G09G3/3233 ,  G09G3/3275

Abstract: The present disclosure discloses a pixel circuit, a driving method thereof, a display panel, and a display device, which belong to the technical field of display. The pixel circuit includes a data writing sub-circuit, a compensation sub-circuit, a storage sub-circuit, and a driving sub-circuit. Since the compensation sub-circuit may output a first power signal to a first node, the storage sub-circuit may adjust the potential of a second node according to the potential of the first node.

公开(公告)号：US20220181454A1

公开(公告)日：2022-06-09

申请号：US17682239

申请日：2022-02-28

Applicant: BOE Technology Group Co., Ltd.

Inventor： Pan Xu ,  Yicheng Lin ,  Cuili Gai ,  Ling Wang ,  Yongqian Li

IPC: H01L29/417 ,  H01L27/12 ,  H01L27/32 ,  H01L29/66 ,  H01L29/786

Abstract: Embodiments of the present disclosure provide a thin film transistor, a method of manufacturing the same, and a display device. The thin film transistor includes a metal conductive pattern layer, an interlayer insulating layer, and a metal oxide layer; and the metal conductive pattern layer includes: a light shielding pattern, a source signal line, and/or a drain signal line; the metal oxide layer includes: a source electrode, a drain electrode, and an active layer. An orthographic projection of the active layer on the base substrate has an overlapping region with that of the light shielding pattern; the source electrode extends through the interlayer insulating layer to connect to the source signal line, and/or the drain electrode extends through the interlayer insulating layer to connect to the drain signal line.

公开(公告)号：US11329038B2

公开(公告)日：2022-05-10

申请号：US17253537

申请日：2020-05-15

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Pan Xu ,  Yicheng Lin ,  Ling Wang ,  Guoying Wang ,  Xing Zhang ,  Ying Han ,  Dongfang Yang

IPC: H05K1/14 ,  H05K1/18 ,  H05K5/00 ,  H05K5/03 ,  H01L25/10 ,  H01L27/12 ,  G02F1/133 ,  G02F1/1333 ,  G04G17/04 ,  G04G17/06 ,  H01L25/18 ,  H01L27/32

Abstract: The present disclosure provides a display device, including: a display panel, a main circuit board, and a plurality of chip-on-films bonded between the display panel and the main circuit board. The wiring area is provided with a plurality of first binding regions; the plurality of first binding regions are distributed along the wiring area. The main circuit board is provided with a plurality of second binding regions which are corresponding to the first binding regions in a one-to-one manner. A shape of the main circuit board is the same as a shape of the wiring area. A first end of each chip-on-film is bonded to one corresponding first binding region; a second end of each chip-on-film is bonded to one corresponding second binding region.

公开(公告)号：US20210201790A1

公开(公告)日：2021-07-01

申请号：US16071667

申请日：2017-08-02

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Cuili Gai ,  Zhongyuan Wu ,  Baoxia Zhang ,  Ling Wang ,  Yicheng Lin ,  Quanhu Li ,  Fang Liu

IPC: G09G3/3258 ,  G09G3/3233 ,  G09G3/3291

Abstract: The present application discloses a pixel circuit in an active matrix organic light-emitting diode (AMOLED) display panel. The pixel circuit includes a first transistor having a bottom gate and a top gate, a drain supplied with a high-level power-supply voltage, and a source coupled to a light-emitting diode (LED). The bottom gate is provided with a first voltage signal and the source is provided with a second voltage signal in a compensation period during which a present value of a threshold voltage of the first transistor is sensed at the source and a third voltage signal is determined based on the present value of the threshold voltage. The top gate is configured to be provided with the third voltage signal in an emission period to reduce the present value of the threshold voltage.

公开(公告)号：US10923025B2

公开(公告)日：2021-02-16

申请号：US16346519

申请日：2018-11-12

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Cuili Gai ,  Yicheng Lin ,  Ling Wang ,  Pan Xu

IPC: G09G3/32

Abstract: A method for compensating the pixel driving circuit may include: in a light emitting phase of the pixel driving circuit, sensing an electric signal of the first electrode of the electroluminescent element, and calculating an electrical compensation signal based on the electric signal; in the light emitting phase of the pixel driving circuit, sensing a brightness signal of the electroluminescent element by a photosensitive sensor and calculating an optical compensation signal according to the brightness signal; and generating a comprehensive compensation signal according to the electrical compensation signal and the optical compensation signal, and controlling a signal on a control terminal of the drive transistor according to the comprehensive compensation signal.

公开(公告)号：US10885845B2

公开(公告)日：2021-01-05

申请号：US16022756

申请日：2018-06-29

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Cuili Gai ,  Yi Cheng Lin ,  Ling Wang ,  Baoxia Zhang ,  Pan Xu

IPC: G09G3/32 ,  G09G3/3258 ,  G09G3/3233

Abstract: The present disclosure provides an OLED pixel driving circuit, a driving method thereof and a display device including the same. The OLED pixel driving circuit includes: a first transistor, providing driving current to an organic light emitting diode, and comprising a first terminal, second terminal and control terminal coupled to a first node, second node and third node respectively; a power switch unit, coupled between a power supply voltage and the second node; a first switch unit, coupled between a data line and a fourth node to couple a data voltage signal from the data line to the fourth node; a second switch unit, coupled between the third node and the second node to enable the first transistor connected as a diode; a first capacitor, coupled between the fourth node and the first node; and a second capacitor, coupled between the fourth node and the second node.

公开(公告)号：US10861926B2

公开(公告)日：2020-12-08

申请号：US16303340

申请日：2018-04-26

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Cuili Gai ,  Ling Wang ,  Yicheng Lin ,  Baoxia Zhang ,  Pan Xu ,  Quanhu Li

IPC: H01L27/32 ,  G09G3/3225 ,  H01L51/50 ,  H01L51/56 ,  H01L51/52

Abstract: The present disclosure is related to a display substrate. The display substrate may include a plurality of pixel units. Each of the plurality of the pixel units may include a first electrode and a second electrode on a base substrate. At least one of the pixel units further comprises an auxiliary electrode and a connecting structure between the auxiliary electrode and the first electrode. The connecting structure may be configured to electrically connect the auxiliary electrode to the first electrode.