Abstract: A display substrate includes: a base substrate (100); a plurality of sub-pixels (R, G, B) located on the base substrate (100), every two rows of sub-pixels (R, G, B) constituting a pixel group; a plurality of first gate lines (Gate1) located at first row gaps between the pixel groups, two first gate lines (Gate1) being arranged at each first row gap; and a plurality of photosensors (101), the orthographic projection of each row of photosensors (101) on the base substrate (100) completely covering a second row gap in the pixel group and partially overlapping with the orthographic projections of the sub-pixels (R, G, B), thereby avoiding the bright and dark difference between adjacent rows and ensuring the aperture ratio.

Abstract: A display device is disclosed. The display device includes an array substrate and at least two driving units. The array substrate includes a peripheral region and a display region, the array substrate further includes a peripheral grounding line and a test line, wherein the peripheral grounding line is located in the peripheral region, and the test line is located in the peripheral region. The at least two driving units are located on at least one side of the array substrate, the driving unit includes at least two grounding pins, a grounding pin of at least one of the driving units is connected to the peripheral grounding line, and each of at least one grounding pin of one of two adjacent driving units is electrically connected to a corresponding grounding pin of the other adjacent driving unit.

Abstract: One aspect of the invention provides a method of generating three-dimensional biological structures. The method includes: (a) depositing a first layer of a suspension over a substrate, the suspension including a liquid and a plurality of cells; (b) allowing the plurality of cells to attach to the substrate and form a first layer of attached cells; (c) depositing a cell-attachment agent over the first layer of attached cells; and (d) depositing a second layer of the suspension over the cell-attachment agent.

Abstract: One aspect of the invention provides a system for dispensing and printing cells and particles. The system includes: (a) a flow confinement device; (b) a controller configured to generate a confined liquid volume outside the flow confinement device, wherein the confined liquid volume or materials contained in the confined liquid volume can be released to the environment by confined, modulated, and non-confined flow modes in arbitrary sequence and for arbitrary periods of time by said controller; (c) one or more liquids containing cells or cell constituents supplied into the confined liquid volume through the flow confinement device; (d) a substrate; and (e) a system configured to position the flow confinement device in 3D space and, therefore, the confined liquid volume to be positioned relative to the substrate, such that the confined liquid volume and contents, can interact with the substrate.