公开(公告)号：US20210375218A1

公开(公告)日：2021-12-02

申请号：US16933335

申请日：2020-07-20

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

Inventor： Xiongping LI ,  Xiaoping SUN ,  Lihua WANG ,  Conghua MA ,  Qiang DONG

IPC: G09G3/34 ,  G02F1/13357

Abstract: A backlight drive method, a backlight drive device, a backlight source system, and a display device are provided in the present disclosure. The backlight drive method is used to drive a light-emitting region of a backlight source of the display device. Driving the light-emitting region of the backlight source includes acquiring actual ambient brightness of an ambient where the display device is located. Driving the light-emitting region of the backlight source further includes determining a target backlight brightness range of light exited from the light-emitting region with reference to the actual ambient brightness, where the target backlight brightness range is within an intrinsic brightness range of the light-emitting region. Driving the light-emitting region of the backlight source further includes matching the target backlight brightness range to a plurality of gray levels preset in the light-emitting region.

公开(公告)号：US20250044640A1

公开(公告)日：2025-02-06

申请号：US18625155

申请日：2024-04-02

Applicant: Shanghai Tianma Micro-electronics Co., Ltd.

Inventor： Xiongping LI ,  Ronghua LI ,  Hui LIU

IPC: G02F1/13357 ,  G02F1/1335

Abstract: A direct-lit backlight module, a method of designing a backlight module and a display device are provided. The direct-light backlight module includes a substrate; an optical film layer; a reflector; and light-emitting elements. The substrate and the optical film layer are arranged oppositely; the light-emitting elements are arranged on a side of the substrate facing the optical film layer; the reflector is located between the substrate and the optical film layer and includes reflective structures surrounding the light-emitting elements; there is a gap between the reflective structures and the optical film layer, and there is air in the gap. In the thickness direction of the backlight module, a distance between one end of the reflective structure adjacent to the optical film layer and the optical film layer is OD1, and the distance between the substrate and the optical film layer is OD; and X = OD ⁢ 1 OD ; and 0.4≤X

公开(公告)号：US20240248302A1

公开(公告)日：2024-07-25

申请号：US18624431

申请日：2024-04-02

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

Inventor： Fushun WAN ,  Lumang HU ,  Jiandong WANG ,  Xiongping LI

IPC: G02B27/01

CPC classification number: G02B27/0101

Abstract: A light filter, a head up display device, and a transport means are provided. The light filter has an optical transmission region and includes an optical layer group arranged in the optical transmission region. Transmittance of the optical layer group to light within a first waveband is greater than transmittance of the optical layer group to light within a second waveband. The optical layer group includes a first layer and a second layer that are stacked together. A refractive index of the first layer is different from a refractive index of the second layer. The first layer includes a metal layer.

公开(公告)号：US20240085729A1

公开(公告)日：2024-03-14

申请号：US18108711

申请日：2023-02-13

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

Inventor： Zhiyuan ZHANG ,  Xintong LING ,  Fan TIAN ,  Xiongping LI

IPC: G02F1/13 ,  F21V8/00 ,  G02F1/1333 ,  G02F1/1335 ,  G02F1/13363 ,  G02F1/1343 ,  G02F1/1347

CPC classification number: G02F1/1323 ,  G02B6/0053 ,  G02F1/13338 ,  G02F1/133514 ,  G02F1/133528 ,  G02F1/13363 ,  G02F1/134309 ,  G02F1/1347 ,  G02F2413/02

Abstract: Anti-peep display assembly and display device are provided. The anti-peep display assembly includes a backlight module, a first birefringence control type liquid crystal cell, a second birefringence control type liquid crystal cell, and a display liquid crystal cell. Along a thickness direction of the anti-peep display assembly, the first birefringence control type liquid crystal cell and the second birefringence control type liquid crystal cell are between the backlight module and the display liquid crystal cell, and the first birefringence control type liquid crystal cell is between the second birefringence control type liquid crystal cell and the backlight module. A first polarizer is arranged on a side of the display liquid crystal cell away from the second birefringence control type liquid crystal cell, and a second polarizer is arranged between the display liquid crystal cell and the second birefringence control type liquid crystal cell.

公开(公告)号：US20210199500A1

公开(公告)日：2021-07-01

申请号：US16845577

申请日：2020-04-10

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

Inventor： Kan WANG ,  Yang NAN ,  Xiongping LI ,  Xiaoping SUN ,  Meilin WANG

IPC: G01J1/46 ,  G09G5/10 ,  H01L27/12 ,  H01L27/144 ,  H01L31/113 ,  H01L31/0216 ,  H01L31/0224 ,  H01L31/02

Abstract: A display module and a method for monitoring backlight brightness are provided in the present disclosure. The display module includes a display region including an opening region and a non-opening region. The display module includes a backlight module and an array substrate. The array substrate is at a light-exiting side of the backlight module. The array substrate includes a plurality of gate lines which extends along a first direction and is arranged along a second direction, and further includes a plurality of data signal lines which is arranged along the first direction and extends along the second direction. The array substrate further includes a first substrate and at least one photosensitive unit, where the photosensitive unit is at a side of the first substrate away from the backlight module; and the photosensitive unit is disposed at the non-opening region for sensing a luminous brightness of the backlight module.

公开(公告)号：US20240404484A1

公开(公告)日：2024-12-05

申请号：US18806364

申请日：2024-08-15

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

Inventor： Ye YAN ,  Xiaodong YANG ,  Dandan CHU ,  Jiandong WANG ,  Xiongping LI

IPC: G09G3/36

Abstract: A display panel and a display apparatus, in the display panel, a pixel unit includes a plurality of sub-pixels, the sub-pixels in a same pixel unit are electrically connected to a same scan line and are each electrically connected to different data lines/the display panel further includes demultiplexers, each demultiplexer includes two output terminals connected to different data lines, and is configured to transmit data signals to different data lines. The plurality of sub-pixels of the same pixel unit include at least three sub-pixels with different colors. Accordingly, the pixel units need not to borrow sub-pixels from each other while achieving full-color display of the display panel, which is conducive to improving the stability of display quality, using 1:2 demultiplexers to transmit data signals to sub-pixels ensures that each sub-pixel has sufficient charging time, thereby being conducive to ensuring the display quality of the display panel.