Abstract: A display device includes a substrate, a plurality of pixel electrodes on the substrate and spaced apart from each other, a plurality of light-emitting elements on the plurality of pixel electrodes, respectively, and a common electrode layer on the plurality of light-emitting elements and to which a common voltage is applied. The plurality of light-emitting elements include a first light-emitting element that is configured to emit first light according to a first driving current and a second light-emitting element that is configured to emit second light according to a second driving current. An active layer of the first light-emitting element is the same as an active layer of the second light-emitting element.

Abstract: A method for an image-based eye disease diagnosis according to an embodiment includes receiving a fundus image, determining whether the fundus image is a deep diagnosis target using a deep diagnosis target classification model, and determining whether the fundus image has a disease through a preset deep diagnosis process when a result of the determination shows that the fundus image is the deep diagnosis target, or determining whether the fundus image has a disease by applying the fundus image to a general diagnosis model when the result of the determination shows that the fundus image is not the deep diagnosis target.

Abstract: An apparatus for predicting a cardiovascular risk factor according to an embodiment includes a target cardiovascular risk factor predicting module for producing an initial prediction value for a target cardiovascular risk factor from a fundus image, at least one related cardiovascular risk factor predicting module for producing respective prediction values for at least one related cardiovascular risk factor from the fundus image, and a combining module for producing a final prediction value for the target cardiovascular risk factor on the basis of the initial prediction value for the target cardiovascular risk factor and the respective prediction values for the at least one related cardiovascular risk factor.

Abstract: A method for an image-based eye disease diagnosis according to an embodiment includes receiving a fundus image, determining whether the fundus image is a deep diagnosis target using a deep diagnosis target classification model, and determining whether the fundus image has a disease through a preset deep diagnosis process when a result of the determination shows that the fundus image is the deep diagnosis target, or determining whether the fundus image has a disease by applying the fundus image to a general diagnosis model when the result of the determination shows that the fundus image is not the deep diagnosis target.

Abstract: A method of preparing an aromatic carbonate includes reacting a dialkyl carbonate with an aromatic alcohol in the presence of a catalyst represented by Formula 1. With the method, aromatic carbonate can be prepared from a dialkyl carbonate in high yield using a catalyst capable of increasing initial reactivity of the dialkyl carbonate. wherein X1 and X2 are the same or different and are each independently M—OR1)3 or ?wherein M is a Group IV transition metal, R1 and R2 are the same or different and are each independently a substituted or unsubstituted C1 to C20 hydrocarbon group, and R3 is a substituted or unsubstituted C5 to C20 cyclic alkylene group or arylene group.

Abstract: A method of preparing an aromatic carbonate includes reacting a dialkyl carbonate with an aromatic alcohol in the presence of a catalyst represented by Formula 1. With the method, aromatic carbonate can be prepared from a dialkyl carbonate in high yield using a catalyst capable of increasing initial reactivity of the dialkyl carbonate. wherein X1 and X2 are the same or different and are each independently M?OR1)3 or wherein M is a Group IV transition metal, R1 and R2 are the same or different and are each independently a substituted or unsubstituted C1 to C20 hydrocarbon group, and R3 is a substituted or unsubstituted C5 to C20 cyclic alkylene group or arylene group.

Abstract: A method for preparing a polycarbonate resin includes polymerizing an aromatic dihydroxyl compound and a diaryl carbonate to prepare a polycarbonate pre-polymer; injecting and mixing an inert gas with the prepared polycarbonate pre-polymer; and foaming and polymerizing the polycarbonate pre-polymer with which the inert gas is mixed. The method can prevent or reduce yellowing upon melt polymerization of the polycarbonate resin.

Abstract: A method for preparing branched polycarbonate includes: preparing a first raw material by mixing and reacting an aromatic dihydroxy compound, diaryl carbonate, and about 60 ppb (weight) to about 140 ppb (weight) of a catalyst with respect to the amount of aromatic dihydroxy compound; preparing a second raw material by mixing and reacting an aromatic dihydroxy compound, diaryl carbonate, a phosphorus branching agent, and about 350 ppb (weight) to about 450 ppb (weight) of the catalyst with respect to the amount of aromatic dihydroxy compound; and melt-polymerizing about 100 parts by weight of the first raw material and about 1 part by weight to about 20 parts by weight of the second raw material. The branched polycarbonate prepared by the method can exhibit excellent properties in terms of heat resistance, color stability and/or fluidity due to small catalyst amount.