公开(公告)号：US11798966B2

公开(公告)日：2023-10-24

申请号：US17126354

申请日：2020-12-18

Applicant: TIANMA JAPAN, LTD. ,  Wuhan Tianma Micro-Electronics Co., Ltd.

Inventor： Kunihiro Shiota ,  Ken Sumiyoshi ,  Hiroshi Haga

IPC: H01L27/146 ,  G02B5/00

CPC classification number: H01L27/14625 ,  G02B5/003

Abstract: A light ray direction control element includes a base, a plurality of light transmitting layers arranged on a main surface of the base, a light absorbing layer disposed among the plurality of light transmitting layers, and a tilt prevention layer provided on the main surface of the base and disposed on an outer periphery of a region in which the plurality of light transmitting layers is disposed.

公开(公告)号：US11793071B2

公开(公告)日：2023-10-17

申请号：US17126785

申请日：2020-12-18

Applicant: Wuhan Tianma Micro-Electronics Co., Ltd.

Inventor： Kui Wang ,  You Gao

IPC: H10K85/60 ,  C07D487/22 ,  C09K11/06 ,  H10K50/11 ,  H10K101/10

CPC classification number: H10K85/654 ,  C07D487/22 ,  C09K11/06 ,  H10K85/6572 ,  C09K2211/1018 ,  H10K50/11 ,  H10K2101/10

Abstract: Provided are an organic compound, an electroluminescent material, and a use thereof. The organic compound has a structure represented by Formula I and is a carbazole olefin-like compound which is beneficial for improving the amorphous performance, thermal stability, and glass transition temperature of the material. The organic compound has appropriate HOMO energy level and LUMO energy level and a relatively high triplet energy level and can inhabit the transfer of triplet energy from a guest back to a host and reduce a driving voltage of a device. The organic compound, as a host material, has a relatively high carrier transport rate and balanced carrier transport performance, so as to facilitate the balance of hole and electron currents in the device, obtain a wider carrier recombination region, significantly improve light emitting efficiency and external quantum efficiency of the device, and reduce a turn-on voltage and power consumption of the device.

公开(公告)号：US11793038B2

公开(公告)日：2023-10-17

申请号：US17354416

申请日：2021-06-22

Applicant: Wuhan Tianma Micro-Electronics Co., Ltd.

Inventor： Lei Li

IPC: H10K59/124 ,  H10K50/844 ,  H10K71/00 ,  H10K50/11 ,  H10K50/15 ,  H10K50/16 ,  H10K50/17 ,  H10K50/822 ,  H10K59/123 ,  H10K59/12

CPC classification number: H10K59/124 ,  H10K50/844 ,  H10K71/00 ,  H10K50/11 ,  H10K50/15 ,  H10K50/16 ,  H10K50/17 ,  H10K50/171 ,  H10K50/822 ,  H10K59/1201 ,  H10K59/123

Abstract: Provided are a display panel, a method for manufacturing a display panel, and a display device. The display panel includes: a base substrate; an insulating layer disposed on the base substrate; a first groove provided in a transition region, a first cover layer and a common light-emitting functional layer. The first groove at least partially surrounds a display region. The first groove includes a first portion and a second portion. An aperture of the second portion on a side adjacent to the first portion is less than an aperture of the first portion on a side adjacent to the second portion. The first cover layer includes a first sub-cover layer disposed on the side of the insulating layer away from the base substrate and a second sub-cover layer. The second sub-cover layer covers a sidewall of the second portion. The common light-emitting functional layer is disconnected at the first groove.

公开(公告)号：US11783776B2

公开(公告)日：2023-10-10

申请号：US18074246

申请日：2022-12-02

Applicant: Wuhan Tianma Micro-Electronics Co., Ltd.

Inventor： Yojiro Matsueda

IPC: G09G3/32 ,  G09G3/3233 ,  H10K59/35

CPC classification number: G09G3/3233 ,  H10K59/352 ,  H10K59/353 ,  G09G2300/0413 ,  G09G2300/0452 ,  G09G2300/0465 ,  G09G2300/0814 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2320/0209 ,  G09G2320/0233

Abstract: A display panel includes pixels disposed in a delta-nabla layout. Each data line set consists of three data lines of a data line for a first color, a data line for a second color, and a data line for a third color disposed consecutively. An additional data line for the first color is disposed outside the data line sets. Each pixel circuit for the first color in each of pixel circuit column pairs is supplied with a data signal from a data line for the first color closer to the pixel circuit between the data line for the first color in the associated data line set and the data line for the first color located adjacent to the data line for the third color in the associated data line set outside the associated data line set.

公开(公告)号：US20230316976A1

公开(公告)日：2023-10-05

申请号：US18306464

申请日：2023-04-25

Applicant: WUHAN TIANMA MICRO-ELECTRONICS CO., LTD. ,  Wuhan Tianma Microelectronics Co., Ltd. Shanghai Branch

Inventor： Xingyao ZHOU ,  Yana GAO ,  Kang YANG ,  Wei LIU ,  Qijun YAO

IPC: G09G3/20

CPC classification number: G09G3/20 ,  G09G2300/0842 ,  G09G2310/0202 ,  G09G2310/08 ,  G09G2320/0233 ,  G09G2320/0247 ,  G09G2330/021 ,  G09G2340/00

Abstract: A display device including a display panel having a display area. The display panel includes pixel circuits located in the display area. Each pixel circuit includes a driving transistor and a voltage regulating module that is configured to adjust a node voltage of the driving transistor by a voltage provided by one voltage regulating signal line of voltage regulating signal lines. The pixel circuits have data refresh frequencies including first and second frequencies. The first frequency is greater than the second frequency. When one pixel circuit performs data refreshing at the first frequency, one voltage regulating signal line is configured to provide a first voltage, and when one pixel circuit performs data refreshing at the second frequency, one voltage regulating signal line is configured to provide a second voltage not equal to the first voltage.

公开(公告)号：US11763746B1

公开(公告)日：2023-09-19

申请号：US18056911

申请日：2022-11-18

Applicant: WUHAN TIANMA MICRO-ELECTRONICS CO., LTD. ,  Wuhan Tianma Microelectronics Co., Ltd. Shanghai Branch

Inventor： Mengmeng Zhang ,  Yue Li

IPC: G09G3/3233

CPC classification number: G09G3/3233 ,  G09G2300/0842 ,  G09G2310/08 ,  G09G2320/0247 ,  G09G2330/026 ,  G09G2330/027 ,  G09G2330/04

Abstract: A display panel, a method for driving the same, and a display apparatus are provided. The display panel includes an emission driving circuit that includes cascaded emission driving units. The emission driving unit includes a control module including a control transistor. The control transistor provides a signal of an adjustment signal terminal to a first node in response to a signal of a first control signal terminal, so as to turn off a first output module. A voltage difference between any two of a control electrode, a first electrode or a second electrode of the control transistor is smaller than or equal to a preset threshold, and/or a duration in which a voltage difference between any two of the control electrode, the first electrode or the second electrode of the control transistor is greater than the preset threshold is smaller than or equal to a preset duration.

公开(公告)号：US11737325B2

公开(公告)日：2023-08-22

申请号：US17193146

申请日：2021-03-05

Applicant: Wuhan Tianma Micro-Electronics Co., Ltd.

Inventor： Xingxing Yang ,  Yangzhao Ma ,  Zhiqiang Xia

IPC: H01L29/12 ,  H10K59/131 ,  H10K59/88 ,  H10K59/121 ,  H01L27/12 ,  H10K59/35

CPC classification number: H10K59/131 ,  H10K59/1213 ,  H10K59/1216 ,  H10K59/88 ,  H01L27/1214 ,  H10K59/35

Abstract: A display panel includes a first display region, a second display region partially surrounding the first display region, and a third display region partially surrounding the first and second display regions. The first display region has a larger light transmittance than the third display region, and the first display region includes an effective light-transmission region and a wiring region located on at least one side of the effective light-transmission region. The display panel includes first and second pixel circuits in the second display region; third pixel circuits in the third display region; first data lines, connected to the first and third pixel circuits; and second data lines, connected to the second and third pixel circuits. Each first data line includes a first sub-data line in the wiring region, a second sub-data line in the second display region, and a third sub-data line in the third display region.

公开(公告)号：US20230217685A1

公开(公告)日：2023-07-06

申请号：US17698646

申请日：2022-03-18

Applicant: Wuhan Tianma Micro-Electronics Co., Ltd. ,  Wuhan Tianma MicroElectronics Co., Ltd. Shanghai Branch

Inventor： Huiping CHAI ,  Baoyan CHAI ,  Lijing HAN ,  Yuantao WU

IPC: H01L51/52 ,  G06F3/041

CPC classification number: H01L51/525 ,  G06F3/041 ,  H01L51/5281

Abstract: A display panel and a display device are provided. The display panel includes a display area and a non-display area surrounding the display area; a first substrate and a second substrate disposed opposite to the first substrate; a plurality of supporting pillars disposed between the first substrate and the second substrate and located in the display area; and an adhesive layer disposed between the first substrate and the second substrate and located in the non-display area. The second substrate includes a plurality of film layers, the plurality of film layers include a polarizer and at least one first layer, and a thickness of a portion of the at least one first layer located in the display area is greater than a thickness of a portion of the at least one first layer located in the non-display area.

公开(公告)号：US20230215350A1

公开(公告)日：2023-07-06

申请号：US17687594

申请日：2022-03-04

Applicant: Wuhan Tianma Micro-Electronics Co., Ltd.

Inventor： Jiao SHI ,  Di ZHANG

IPC: G09G3/3225 ,  H01L27/32

CPC classification number: G09G3/3225 ,  H01L27/3262 ,  G09G2300/0452 ,  G09G2300/0842 ,  G09G2320/0214 ,  G09G2320/0233 ,  H01L29/78696

Abstract: Display panel and display device are provided. The display panel includes a plurality of subpixels. A subpixel of the plurality of subpixels includes a pixel circuit and a light emitting element that are electrically connected. The pixel circuit includes a first transistor. A first electrode of the first transistor is connected to a first reference voltage signal terminal. A second electrode of the first transistor is electrically connected to an anode of the light emitting element. In a light emitting retention stage of the subpixel of the plurality of subpixels, the first reference voltage signal terminal is connected to a negative potential signal or a ground potential signal. The plurality of subpixels includes at least a first subpixel and a second subpixel, and a color of the first subpixel is different from a color of the second subpixel.

公开(公告)号：US20230206845A1

公开(公告)日：2023-06-29

申请号：US18074246

申请日：2022-12-02

Applicant: Wuhan Tianma Micro-Electronics Co., Ltd.

Inventor： Yojiro MATSUEDA

IPC: G09G3/3233 ,  H10K59/35

CPC classification number: G09G3/3233 ,  H01L27/3216 ,  H01L27/3218 ,  G09G2300/0452 ,  G09G2300/0413 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2300/0819 ,  G09G2320/0233 ,  G09G2300/0814 ,  G09G2300/0465 ,  G09G2320/0209

Abstract: A display panel includes pixels disposed in a delta-nabla layout. Each data line set consists of three data lines of a data line for a first color, a data line for a second color, and a data line for a third color disposed consecutively. An additional data line for the first color is disposed outside the data line sets. Each pixel circuit for the first color in each of pixel circuit column pairs is supplied with a data signal from a data line for the first color closer to the pixel circuit between the data line for the first color in the associated data line set and the data line for the first color located adjacent to the data line for the third color in the associated data line set outside the associated data line set.