Abstract: An etching composition may include an oxidizing agent, an accelerator, an ammonium salt, and an aqueous solvent, wherein the accelerator may include one or more compounds represented by Formula 1, and the ammonium salt may include at least one compound having a structure in which at least one of hydrogen ions (H+) of a hydroxyl group (*—OH) or a thiol group (*—SH) included in the accelerator is substituted with an ammonium cation (NH4+): Formula 1 is as described in the present specification.

Abstract: Provided are an etching composition including a hypervalent iodine-containing compound, a method of etching a metal-containing layer by using the same, and a method of manufacturing a semiconductor device by using the same.

Abstract: Provided are an etching composition, a method of etching a metal-containing film by using the same, and a method of manufacturing a semiconductor device by using the same. The etching composition may include an oxidizing agent, a buffer, and a selective etching inhibitor. The selective etching inhibitor may include a first compound represented by Formula 1 and a second compound different from the first compound. The second compound may include a ring. The ring may be a pyrazole group, an imidazole group, a triazole group, or a tetrazole group, or the ring may be a pyrazole group, an imidazole group, or a triazole group, each condensed with a benzene group, a pyridine group, a pyrimidine group, a pyrazine group, a pyridazine group, or any combination thereof. A description of Formula 1 is provided in the present specification.

Abstract: Provided are an etching composition, a method of etching a metal-containing film using the same, and a method of manufacturing a semiconductor device by using the same. The etching composition includes an oxidizing agent, an acid, and a selective etching inhibitor, wherein the oxidizing agent is metal-free, the selective etching inhibitor includes a copolymer including a first repeating unit and a second repeating unit, the first repeating unit is different from the second repeating unit, and the first repeating unit is a nitrogen-containing repeating unit.

Abstract: An etching composition for a titanium-containing layer may include an oxidant, an inorganic acid, and a selective etching inhibitor. The inorganic acid may include phosphorus-based inorganic acid, chlorine-based inorganic acid, or fluorine-based inorganic acid, or any combination thereof. The selective etching inhibitor may include a polymer having a nitrogen-containing repeating unit.

Abstract: An etching composition may include an oxidizer, an ammonium salt, an aqueous solvent, and an accelerator. A method of etching a metal-containing film may be performed using the etching composition, and a method of manufacturing a semiconductor device may be performed using the etching composition.

Abstract: A cleaning composition for removing residues on surfaces contains a solvent and a cleaning accelerator, but does not contain an oxidant, wherein the cleaning accelerator includes at least one of a salt represented by Formula 1A or a salt represented by Formula 1B. A method of cleaning a metal-containing film includes preparing the cleaning composition, and bring the cleaning composition into contact with a metal-containing film provided on a substrate, the metal-containing film having a surface on which residues are generated.

Abstract: A composition for a photoelectric device includes a compound represented by Chemical Formula 1, and an image sensor and an electronic device including the same: In Chemical Formula 1, each substituent is the same as defined in the detailed description.

Abstract: A system and device use block-chain technology for ensuring the authentication and integrity of genomic data. The system includes a certification authority (CA) device, an analysis institution device, a user device, a utilization institution device, and a plurality of node devices. The CA device generates a pair of private and public keys to the analysis institution device and the user device. The analysis institution device performs genome analysis to extract genomic data, performs electronic signature for the genomic data with the analysis institution private key, and transmits the genomic data to the user device. The user device authenticates with the analysis institution public key, performs electronic signature with the user private key, and stores the genomic data. The utilization institution device transmits, to the user device, a smart contract that specifies a utilization institution identifier, and a utilization scope and period of the genomic data.

Abstract: Disclosed is a cover window for protecting a display panel. The present cover window comprises: a transparent sheet through which light of the display panel passes, the transparent sheet including nano-inorganic particles; and a coating layer disposed on the transparent sheet.

Abstract: An education management system and an education management method that enable credits to be admitted based on at least one of talents and carriers and a talent donation bank service provision system using the same is disclosed. The education management method comprises acquiring information on talent, career or talent career degree and talent donation-related information for talent, career or talent career degree; monitoring the status of talent or career donation of the talent, career or talent career degree based on the talent donation-related information; checking accumulated talent, career or talent career donation score for a degree student during a set period according to the pre-set donation conditions for the degree or the credits after conferring the degree; and canceling the credit or degree, when the donation score of the degree person is less than the reference score within the donation condition, as a result of the check.

Abstract: A stacked structure including a conductive layer disposed on a substrate and a protective layer disposed on the conductive layer and including a cured product of a cation polymerizable compound and a cation initiator, wherein the cation initiator comprises a cation and a resonance-stabilized counteranion, a window for an electronic device, and an electronic device that includes the stacked structure.

Abstract: A coating film to prevent a conspicuous fingerprint has a water contact angle of no less than 60° so that most of water contained in fingerprints on the coating film evaporates without forming a layer adsorbed on the coating film. Further, the coating film has lipophilicity and has a diiodomethane contact angle of no more than 45° so that the coating film exhibits enhanced affinity to fingerprints, which primarily contain oily components.

Abstract: A composition comprising a cation polymerizable organic compound and an organosiloxane comprising at least one silsesquioxane, wherein each silsesquioxane independently comprises an inorganic core having a SiO3/2 moiety and an organic group having a cation polymerizable functional group, wherein the organic group in the comprises a first organic group represented by Chemical Formula 1 a second organic group represented by Chemical Formula 2, R1—(CH2)n1—* ??Chemical Formula 1 R2—(CH2)n2—* ??Chemical Formula 2 wherein R1 and R2 are each independently the cation polymerizable functional group, n1 is an integer ranging from 1 to 3, and n2 is an integer of 4 or greater.

Abstract: Disclosed is a cover window for protecting a display panel. The present cover window comprises: a transparent sheet through which light of the display panel passes, the transparent sheet including nano-inorganic particles; and a coating layer disposed on the transparent sheet.

Abstract: A system for providing a talent donation bank service comprises: a transmission and reception unit which receives a fund investment request of a customer from the user terminal; an authentication unit which has a talent qualification degree, competence qualification degree or talent and competence qualification degree of the customer authenticated by a corresponding school server; a value evaluation unit which evaluates the talent qualification degree, the competence qualification degree or the talent and competence qualification degree authenticated through the authentication unit as a property value based on a predetermined criterion; and an investment unit which transmits investment funds to the customer based on evaluation results of the value evaluation unit.

Abstract: A window for a display device includes a polymer substrate, a first protective layer on the polymer substrate and including a cured product of a multi-functional urethane (meth)acrylate compound having six or more (meth)acrylate groups and a second protective layer on the first protective layer and including a cured product of epoxy-containing polysilsesquioxane, wherein the second protective layer is thicker than the first protective layer, and a thickness of the first protective layer ranges from about 0.1 ?m to about 10 ?m and a thickness of the second protective layer ranges from about 5 ?m to about 30 ?m, and a method of manufacturing the same and a display device including a window for a display device.

Abstract: A window for a display device includes a polymer substrate, a first buffer layer under the polymer substrate and having an elastic modulus of about 7 megapascals to about 30 megapsacals, a first transparent adhesion layer between the polymer substrate and the first buffer layer and a protective layer on the polymer substrate, and a display device includes the same.

Abstract: Disclosed herein are a display apparatus having an improved structure to satisfy flexibility and durability at the same time and a method of manufacturing the same. The display apparatus includes a display panel to display an image, and a window cover having a first portion disposed to be integrally bent with the display panel and positioned at an inside of a bending direction and a second portion positioned at an outside of the bending direction and having different stiffness from the first portion.

Abstract: A coating film to prevent a conspicuous fingerprint has a water contact angle of no less than 60° so that most of water contained in fingerprints on the coating film evaporates without forming a layer adsorbed on the coating film. Further, the coating film has lipophilicity and has a diiodomethane contact angle of no more than 45° so that the coating film exhibits enhanced affinity to fingerprints, which primarily contain oily components.