US 12,307,963 B2
Pixel circuit, pixel driving method and display apparatus
Li Wang, Beijing (CN)
Assigned to BOE Technology Group Co., Ltd., Beijing (CN)
Appl. No. 17/913,790
Filed by BOE Technology Group Co., Ltd., Beijing (CN)
PCT Filed Nov. 8, 2021, PCT No. PCT/CN2021/129328
§ 371(c)(1), (2) Date Sep. 22, 2022,
PCT Pub. No. WO2022/217903, PCT Pub. Date Oct. 20, 2022.
Claims priority of application No. 202110400417.7 (CN), filed on Apr. 14, 2021.
Prior Publication US 2024/0212604 A1, Jun. 27, 2024
Int. Cl. G09G 3/3233 (2016.01)
CPC G09G 3/3233 (2013.01) [G09G 2300/0819 (2013.01); G09G 2300/0842 (2013.01); G09G 2300/0861 (2013.01); G09G 2310/061 (2013.01); G09G 2320/0233 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A pixel circuit, comprising: an energy storage circuit, a first initialization circuit, a data writing circuit, a compensation circuit, a light emitting element and N driving branches, N being an integer greater than 1, the N driving branches share only one energy storage circuit, only one first initialization circuit, and only one compensation circuit; wherein the N driving branches comprise N first nodes and N second nodes;
a first terminal of the energy storage circuit is electrically connected to a driving node, a second terminal of the energy storage circuit is electrically connected to a first voltage terminal, and the energy storage circuit is used for storing electric energy;
the first initialization circuit is electrically connected to a reset control terminal, an initial voltage terminal and the driving node, and is used for writing, under control of a reset control signal provided by the reset control terminal, an initial voltage provided by the initial voltage terminal into the driving node;
a nth driving branch comprises a nth driving sub-circuit and a nth light emitting control sub-circuit, n being a positive integer less than or equal to N;
the nth driving sub-circuit is electrically connected to the driving node, the nth first node of the first nodes and the nth second node of the second nodes, and is used for generating, under control of an electric potential of the driving node, a nth driving current flowing from the nth first node to the nth second node;
the nth light emitting control sub-circuit is electrically connected to a light emitting control terminal, the first voltage terminal, the nth first node, the nth second node and the light emitting element, and is used for establishing, under control of a light emitting control signal provided by the light emitting control terminal, a connection between the first voltage terminal and the nth first node, and a connection between the nth second node and the light emitting element;
the compensation circuit is electrically connected to a scanning control terminal, the driving node and a specific second node of the N second nodes, and is used for establishing, under control of a scanning control signal, a connection between the driving node and the specific second node; and
the data writing circuit is electrically connected to a data line, the scanning control terminal and the nth first node, and is used for writing, under control of the scanning control signal provided by the scanning control terminal, a data voltage on the data line into the nth first node;
wherein the data writing circuit comprises N data writing sub-circuits; and
the nth data writing sub-circuit of the N data writing sub-circuits is electrically connected to the scanning control terminal, the nth data line and the nth first node, and is used for writing, under control of the scanning control signal, a nth data voltage on the nth data line into the nth first node.