Abstract: A display panel, including: a base substrate; a light-emitting substrate, provided on a side of the base substrate, where the light-emitting substrate includes a plurality of sub-pixels; and a light-shielding layer group, provided on a side of the light-emitting substrate away from the base substrate, where the light-shielding layer group includes at least two light-shielding layers, a light-shielding layer includes a plurality of light-shielding portions, an orthographic projection of a light-shielding portion of each of the light-shielding layers on the base substrate at least partially overlaps with each other, and the orthographic projection of the light-shielding portion on the base substrate does not overlap with an orthographic projection of a sub-pixel on the base substrate.

Abstract: Provided is a display panel. The display panel includes: a substrate including a light-transmitting display region and a conventional display region; a plurality of first pixel drive circuits, a plurality of first connecting lines, and a plurality of first light-emitting devices disposed in the conventional display region, wherein the first connecting line comprises a connection line part and a compensation part electrically connected to each other, the compensation part being configured to increase an area of the first connecting line; and a plurality of second pixel drive circuits disposed in the conventional display region, a plurality of second connecting lines disposed on the substrate, and a plurality of second light-emitting devices disposed in the light-transmitting display region.

Abstract: Some embodiments of the disclosure provide a method for calibrating extrusion parameters in an additive manufacturing system. In some examples, the method includes the following steps. (1) Executing extrusion commands and printing a plurality of tracks based on one or more printing templates at different extrusion rates. (2) Scanning the plurality of tracks to obtain at least one image of the plurality of tracks. (3) Processing the at least one image of the plurality of tracks to obtain geometry information. (4) Generating a printing model based on the geometry information and the extrusion commands. (5) Evaluating the printing model. (6) If the printing error result is within the pre-defined threshold, adopting the printing model as a reference for choosing extrusion parameters at a given extrusion rate. (7) If the printing error result is not within the pre-defined threshold, repeating steps (1)-(6).

Abstract: The display panel includes a substrate and a plurality of light-emitting units disposed on the substrate, wherein the light-emitting units includes a plurality of light-emitting devices arranged in an array, and a barrier is disposed between neighboring light-emitting devices; a dimming layer disposed on the light-exiting side of light-emitting unit, wherein the dimming layer includes a plurality of first refracting portions arranged in an array, and a second refracting portion is disposed between neighboring first refracting portions and contacted with the first refracting portions; and orthographic projections of the first refracting portions on the substrate overlap with an orthographic projection of the barrier on the substrate, and an orthographic projection of the second refracting portions on the substrate overlaps with orthographic projections of the light-emitting devices on the substrate.