Abstract: A display substrate, a display device and a mask are provided. The display substrate includes a base substrate and a pixel electrode at a side of the base substrate; the pixel electrode includes at least two strip electrodes, a slit is provided between adjacent strip electrodes of the at least two strip electrodes, the slit at least includes a first corner end located on at least one end of the slit, the first corner end includes a first edge and a second edge oppositely disposed, and a first transition edge connecting an end of the first edge with an end of the second edge, the first transition edge has an arc shape protruding away from the first corner end; a first included angle is formed between the first and second edges, and the first included angle is greater than or equal to 0° and less than or equal to 13°.

Abstract: A display substrate is provided, including: a base substrate; a plurality of sub-pixels arranged on the base substrate in an array in a row direction and a column direction; a plurality of post spacers arranged at intervals on the base substrate, wherein the plurality of post spacers include at least one main post spacer and a plurality of sub post spacers, and each main post spacer has a height greater than that of each sub post spacer. Each sub-pixel has at most one post spacer provided therein, the plurality of sub-pixels include a main sub-pixel provided with the main post spacer and a sub sub-pixel provided with the sub post spacer, and the plurality of sub-pixels further include at least one mark sub-pixel adjacent to the main sub-pixel in the row direction or the column direction, the at least one mark sub-pixel is provided with no post spacer.

Abstract: The present invention relates to the field of fuel cell stacks and stack tower or module, in particular to a sealing structure for stack tower and a stack tower. The sealing structure comprises a first component, a second component and a mica spacer, the first component and the second component are opposite to each other, the mica spacer is disposed between the first component and the second component, sealing part is arranged between the mica spacer and at least one of the first component and the second component, and the sealing part comprises a glass ceramic layer and an outer circumferential ceramic cement ring surrounding the glass cement layer; the sealing structure for stack tower has excellent sealing performance and service durability for a fuel cell system.