公开(公告)号：US20250072180A1

公开(公告)日：2025-02-27

申请号：US18941578

申请日：2024-11-08

Applicant: Huawei Technologies Co., Ltd.

Inventor： Kun Luo ,  Congbiao Jiang ,  Cuiping Zhang

IPC: H01L33/58 ,  H01L25/075 ,  H01L25/16 ,  H01L33/32

Abstract: A micro-light emitting diode (MicroLED) display screen includes a MicroLED array substrate, where a plurality of pixels are set in the MicroLED array substrate, and the plurality of pixels include at least a first subpixel and a second subpixel; a light scattering structure, prepared above the first subpixel, and configured to scatter first emitting light generated by the first subpixel; a light conversion structure, prepared above the second subpixel, and configured to convert second emitting light generated by the second subpixel; and a metal isolation structure, prepared between the light scattering structure and the light conversion structure, where the light scattering structure, the light conversion structure, and the metal isolation structure are located at a same layer.

公开(公告)号：US20250131873A1

公开(公告)日：2025-04-24

申请号：US18989381

申请日：2024-12-20

Applicant: Huawei Technologies Co., Ltd.

Inventor： Kun Luo ,  Cuiping Zhang ,  Hezi Qiu

IPC: G09G3/32

Abstract: A display circuit includes a plurality of current source branches and a plurality of pixel branches. Each current source branch includes a first transistor and a control circuit. Each pixel branch includes a second transistor, a pulse width control switch transistor, and a pixel unit that are connected in series. The turned-on first transistor and the turned-on second transistor form a current mirror structure. In the current mirror structure, there is a proportional relationship between a current flowing through each of the plurality of first transistors and a current flowing through the turned-on second transistor. Whether each first transistor is turned on is controlled through the control circuit, to adjust a value of the current flowing through each pixel unit through the second transistor.

公开(公告)号：US20250124859A1

公开(公告)日：2025-04-17

申请号：US18999480

申请日：2024-12-23

Applicant: Huawei Technologies Co., Ltd.

Inventor： Kun Luo ,  Congbiao Jiang ,  Shipeng Chi ,  Pengfei Zhao

IPC: G09G3/32 ,  G09G3/00

Abstract: A processing circuit includes a load unit and a detection circuit, and a proportional relationship exists between a load value of the load unit and a load value of a first pixel line. The load value of the load unit is obtained through the detection circuit, to obtain the load value of the first pixel line. Then, based on the load value of the first pixel line, a drive current circuit is controlled to provide a corresponding drive current to the first pixel line. When the drive current enables a light-emitting diode (LED) on the first pixel line to emit light within drive time, a current value is as small as possible.

公开(公告)号：US20250039341A1

公开(公告)日：2025-01-30

申请号：US18809861

申请日：2024-08-20

Applicant: Huawei Technologies Co., Ltd.

Inventor： Kun Luo ,  Wei Xiong ,  Pengfei Zhao

IPC: H04N9/31

Abstract: A projection apparatus includes a pixel array disposed on a substrate, where the pixel array has a light-emitting feature; a cantilever beam disposed on the substrate and configured to fasten a micro-electro-mechanical system (MEMS) lens, where the cantilever beam is disposed outside the pixel array, the MEMS lens is configured to scan the pixel array, the cantilever beam and the MEMS lens form a MEMS lens scanner; and a driver coupled to the pixel array and the MEMS lens and configured to drive the pixel array having a light-emitting feature to perform color display to obtain a projected image.