Lenovo (beijing) Limited

Huawei Technologies Co., Limited

Peking University

Cuicui Wang

Shengdong Zhang

Yuchun Lu

Linchun Wang

Ying Sun

Dajun Zang

Daochun Mo

Chuanli Leng

Longyan Wang

Embodiments of this application provide a balance-unbalance conversion apparatus. The apparatus includes an insulation substrate, a first microstrip, a second microstrip, and a conductive ground. The first microstrip includes a first balance signal connection section, a first impedance matching section, and an unbalance signal connecting section. The unbalance signal connecting section is configured to transmit an unbalance signal. The second microstrip includes a second balance signal connecting section, a second impedance matching section, and a ground section. The second balance signal connecting section is configured to transmit a second component of the balance signal. The ground section is configured to connect to a ground signal. The first microstrip, the second microstrip, and the conductive ground are all disposed on the insulation substrate, and a cross-sectional area of at least a part of the first microstrip and/or at least a part of the second microstrip is gradient.

Balance-unbalance conversion apparatus, communications device, and communications system

An electronic apparatus includes a cylindrical housing, a first functional member, a second functional member, and a heat dissipation assembly. The cylindrical housing includes an air inlet structure and an air outlet structure. The first functional member and the second functional member are arranged in the cylindrical housing. The first functional member and the second functional member are alternately arranged. The heat dissipation assembly is arranged in the cylindrical housing. The first functional member and the second functional member are thermally connected to two heat transfer contact surfaces of the heat dissipation assembly, respectively. The heat dissipation assembly is configured to perform heat dissipation processing on the first functional member and the second functional member.

Electronic apparatus

Disclosed is a heat dissipation apparatus and an electronic device. The heat dissipation apparatus is suitable for a processor in an electronic device. The heat dissipation apparatus includes a housing including an inlet for introducing a cooling fluid into the housing and an outlet for allowing the cooling fluid to exit from the housing. The heat dissipation apparatus includes a heat dissipating member disposed in the housing. The heat dissipation apparatus includes a buffer member disposed between the inlet and the heat dissipating member. The buffer member includes through-holes for inhibiting a flow of the cooling liquid from the inlet of the housing to the dissipating member to transfer heat across the heat dissipating member to the cooling fluid. The electronic device may include a processor and the heat dissipation apparatus.

Heat dissipation apparatus and electronic device

A pixel circuit, a drive method based on the pixel circuit, and a display device. The pixel circuit comprises: a first capacitor (C), a second capacitor (C), a second transistor (T), a third transistor (T) and a light-emitting branch for being coupled between a first common electrode (VDD) and a second common electrode (VSS); wherein the light-emitting branch comprises a first transistor (T), a fourth transistor (T) and a light-emitting element (OLED) which are connected in series; a first electrode of the first transistor (T) is coupled to a second electrode of the fourth transistor (T), and a coupling node is a third node (C); and a control electrode of the fourth transistor (T) is used for inputting a second scanning control signal (V), and the fourth transistor (T) switches the ON/OFF state of the light-emitting branch in response to the second scanning control signal (V). At the programming stage, a threshold voltage of the first transistor (T) is input to a first node (A) through the third transistor (T) and is stored; and at the light-emitting stage, a light-emitting current for driving the light-emitting element (OLED) is generated according to information about a voltage difference across two ends of the first capacitor (C). The pixel circuit is used for compensating for the threshold voltage shift of the first transistor (T) and the light-emitting element (OLED).

Pixel circuit and drive method therefor, and display device

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Beijing, China

Cuicui Wang