Abstract: A display system includes a housing, a display device provided at the housing and exposed from a first side of the housing, a first interface provided at a second side of the housing different from the first side of the housing, and configured to transmit data, and an interaction device. The interaction device includes an interaction member configured to respond to and/or generate interaction data, and a second interface configured to be detachably connected to the first interface and transmit the data. After the second interface is connected to the first interface, the interaction device is configured to maintain a positional relationship with the display device.

Abstract: A display method includes obtaining a first display signal from a data apparatus connected to a display apparatus, processing the first display signal in a first method to obtain a first image set and outputting the first image set, detecting attitude information indicating an attitude, and in response to the attitude information indicating the attitude of the display apparatus satisfying a change condition, processing a second display signal from the data apparatus to obtain a second image set and outputting the second image set. The first method is different from the second method. Content display attribute information of the first image set is different from content display attribute information of the second image set.

Abstract: A display method includes obtaining a first display signal from a data apparatus connected to a display apparatus, processing the first display signal in a first method to obtain a first image set and outputting the first image set, detecting attitude information indicating an attitude, and in response to the attitude information indicating the attitude of the display apparatus satisfying a change condition, processing a second display signal from the data apparatus to obtain a second image set and outputting the second image set. The first method is different from the second method. Content display attribute information of the first image set is different from content display attribute information of the second image set.

Abstract: Provided is a quantum dot surface ligand exchange method. The method comprises the steps: pre-treating proton-containing ligands using a deprotonating agent to obtain deprotonated ligands; mixing a pre-prepared quantum dot solution having original ligands with the deprotonated ligands, after stirring for a predetermined amount of time at room temperature, a ligand exchange reaction occurring, and after washing, obtaining a quantum dot having the deprotonated ligands on the surface. The quantum dot ligand exchange method has a high reaction rate and is easy to operate; after the ligand exchange, the deprotonated ligands firmly bind to cations on the surface of the quantum dot, and after the ligand exchange, the quantum dot provides a stable colloidal solution, and has good solubility and high luminous efficiency.

Abstract: A composite material includes a particle, and a halogen ligand and an oil-soluble organic ligand bound on a surface of the particle. The particle is an inorganic semiconductor nanocrystal.

Abstract: A composite material includes a light-emitting quantum dot, and a first ligand and a second ligand bound on a surface of the light-emitting quantum dot. The first ligand includes an oil-soluble organic ligand, and the second ligand including a halogen ligand or a water-soluble ligand.

Abstract: Provided is a quantum dot surface ligand exchange method. The method comprises the steps: pre-treating proton-containing ligands using a deprotonating agent to obtain deprotonated ligands; mixing a pre-prepared quantum dot solution having original ligands with the deprotonated ligands, after stirring for a predetermined amount of time at room temperature, a ligand exchange reaction occurring, and after washing, obtaining a quantum dot having the deprotonated ligands on the surface. The quantum dot ligand exchange method has a high reaction rate and is easy to operate; after the ligand exchange, the deprotonated ligands firmly bind to cations on the surface of the quantum dot, and after the ligand exchange, the quantum dot provides a stable colloidal solution, and has good solubility and high luminous efficiency.