Abstract: An electroluminescent device includes a first electrode and a second electrode facing each other; an emission layer disposed between the first electrode and the second electrode and including a plurality of quantum dots and a first hole transporting material having a substituted or unsubstituted C4 to C20 alkyl group attached to a backbone structure; a hole transport layer disposed between the emission layer and the first electrode and including a second hole transporting material; and an electron transport layer disposed between the emission layer and the second electrode.

Abstract: A quantum dot light-emitting device including first electrode and a second electrode, a quantum dot layer between the first electrode and the second electrode, a first electron transport layer and a second electron layer disposed between the quantum dot layer and the second electrode. The second electron transport layer is disposed between the quantum dot layer and the first electron transport layer, wherein each of the first electron transport layer and the second electron transport layer includes an inorganic material. A lowest unoccupied molecular orbital energy level of the second electron transport layer is shallower than a lowest unoccupied molecular orbital energy level of the first electron transport layer, and a lowest unoccupied molecular orbital energy level of the quantum dot layer is shallower than a lowest unoccupied molecular orbital energy level of the second electron transport layer. An electronic device including the quantum dot light-emitting device.

Abstract: Provided is a tumbler for beverage making including a drinking water tray including a lower tray which has an open top and a closed bottom to form a storage space for storing drinking water or a beverage therein, and an upper tray which is detachably coupled to the top of the lower tray to close the open top of the lower tray and has a drinking aperture formed therein to enable a user to drink the drinking water or beverage in the storage space; an additive tray which is detachably coupled to the bottom of the drinking water tray, and has an additive storage space for storing an additive formed therein; and a pumping unit which is mounted to penetrate through the drinking water tray and the additive tray so as to pump the additive and supply same to a drinking water storage space.

Abstract: The present invention may be configured to comprise: a drinking water tray comprising a lower tray which has an open top and a closed bottom to form a storage space for storing drinking water or a beverage therein, and an upper tray which is detachably coupled to the top of the lower tray to close the open top of the lower tray and has a drinking aperture formed therein to enable a user to drink the drinking water or beverage in the storage space; an additive tray which is detachably coupled to the bottom of the drinking water tray, and has an additive storage space for storing an additive formed therein; and a pumping unit which is mounted to penetrate through the drinking water tray and the additive tray so as to pump the additive and supply same to a drinking water storage space.

Abstract: The present invention relates to a tumbler for enabling an additive stored in a storage space to be added, in a fixed amount, to drinking water by a pumping means such that a user can drink the drinking water, and the present invention comprises: a drinking water tray of which an upper part is opened, and a lower end is shielded so as to form, on the inner side thereof, a storage space for storing drinking water or a beverage; an additive storage tray of which an upper part is opened, and a lower end is shielded so as to form a storage space in which an additive, to be drunk by being added to water, is stored.

Abstract: The present invention relates to a tumbler for enabling an additive stored in a storage space to be added, in a fixed amount, to drinking water by a pumping means such that a user can drink the drinking water, and the present invention comprises: a drinking water tray of which an upper part is opened, and a lower end is shielded so as to form, on the inner side thereof, a storage space for storing drinking water or a beverage; an additive storage tray of which an upper part is opened, and a lower end is shielded so as to form a storage space in which an additive, to be drunk by being added to water, is stored.