Delta Electronics (shanghai) Co., Ltd

Seeya Optronics Co., Ltd.

Jie Kong

Hong Tao Liu

Cheng Lu

Tieer Gu

Yuhan Ju

Hongyang Wu

Wen Ju Zhang

Wenfei Hu

Baihui Song

A power module includes N inverter units outputting N AC voltages and being coupled to N high-frequency AC terminals, wherein the N high-frequency AC terminals are cascaded and connected to a post-stage rectifier circuit. A phase-shift control method for the power module includes: setting at least two phase-shift sequences, wherein phase sequence numbers of the N AC voltages of the N inverter units are different in the at least two phase-shift sequences; in one switching period, controlling the N AC voltages of the N inverter units to shift a first angle according to a first phase-shift sequence of the at least two phase-shift sequences; and in another switching period, controlling the N AC voltages of the N inverter units to shift the first angle according to a second phase-shift sequence of the at least two phase-shift sequences.

Phase-shift control method for power module, three-phase power module, and power system

Embodiments of the present disclosure provide a power conversion system and a control method. The power conversion system includes multiple power modules, and each power module includes a first port, a second port, and a third port, where the first port of each power module is connected to an external device, second ports of the power modules are independent of each other and used as independent ports to output power, third ports of the power modules are connected in parallel to form a power bus and power flow of the third port of each power module is bidirectional.

Power conversion system and control method

A pixel structure, a method for forming the pixel structure, and a display screen are provided. The method includes: providing a substrate for forming an OLED device, the substrate having a first pixel area, a second pixel area, and a third pixel area; and forming a compensation layer on the substrate, the compensation layer having different thicknesses in the first pixel area, the second pixel area, and the third pixel area. In the present disclosure, the compensation layer is formed on the substrate, and the compensation layer has different thicknesses respectively in the first pixel area, the second pixel area and the third pixel area, so that the cavity of the first pixel area, the cavity of the second pixel area, and the cavity of the third pixel area can be individually controlled.

Pixel structure, method for forming the same, and display screen

A shadow mask used for OLED evaporation and a manufacturing method therefor, and an OLED panel manufacturing method. The shadow mask used for OLED evaporation includes: a semiconductor substrate including a front surface and a back surface opposite thereto, a recess penetrating the front surface and the back surface being provided in the semiconductor substrate; and a grid film layer provided on the front surface of the semiconductor substrate. A number of openings arranged in an array are provided in the grid film layer. Each of the openings has an upper portion and a lower portion. A width of the upper portion is greater than a width of the lower portion. The recess exposes the number of openings in the grid film layer and the grid film layer between adjacent openings.

Growing community of inventors

Shanghai, China

Jie Kong