Abstract: A photo resist layer is used to protect a dielectric layer and conductive elements embedded in the dielectric layer when patterning an etch stop layer underlying the dielectric layer. The photo resist layer may further be used to etch another dielectric layer underlying the etch stop layer, where etching the next dielectric layer exposes a contact, such as a gate contact. The bottom layer can be used to protect the conductive elements embedded in the dielectric layer from a wet etchant used to etch the etch stop layer.

Abstract: An authenticating server is coupled to a blockchain network is configured to: (1) receive a transaction application data from a user, wherein the transaction application data includes a wallet data containing a wallet address data and a user's signature data; (2) check whether an amount of a cryptocurrency corresponding to the wallet address data on the blockchain network is sufficient to perform the transaction; and (3) when the amount of the cryptocurrency corresponding to the wallet address data on the blockchain network is sufficient to perform the transaction, transmit a multi-signature wallet transaction data to the blockchain network for validating a blockchain operation, and send a confirmation data of the transaction associated with the transaction application data to an opposing party of the transaction. The multi-signature wallet transaction data includes the wallet address data, the user's signature data and a signature date of the authenticating server.

Abstract: An electronic apparatus includes a mainframe with a keyboard embedded therein, a mounting frame pivotally connected with the mainframe, a display screen mounted in the mounting frame, a lighting source disposed on the mounting frame, and an optical element cooperating with the lighting source and slideably mounted on the mounting frame. Light from the lighting source is projected to different predetermined areas by adjusting positions of the optical element relative to the lighting source. In each of the positions of the optical element, the light from the lighting source is modulated by a corresponding portion of the optical element to be projected to a corresponding predetermined area.

Abstract: An LED lamp includes an envelope, two covers, a mounting board and a plurality of LEDs. The covers engages with opposite ends of the envelope. Each of the covers has an electrically conductive part. The mounting board is received in the envelope. Two ends of the mounting board electrically connect with the electrically conductive parts of the two covers, respectively. The LEDs are disposed on the mounting board and received in the envelope.