Abstract: A display device includes a plurality of sub-pixels. The sub-pixels include a first sub-pixel and a second sub-pixel. The first sub-pixel includes a first light emitting element and a first control circuit. The first control circuit is configured to provide a first driving current to the first light emitting element. The second sub-pixel includes a second light emitting element and a second control circuit. The second control circuit is configured to provide a second driving current to the second light emitting element. The first control circuit and the second control circuit are configured to differently control pulse amplitude of the first driving current and pulse amplitude of the second driving current, such that both of the first light emitting element and the second light emitting element emit at a target wavelength or a color point range (e.g. +/?1.5˜2 nm).

Abstract: A method of depositing a metal layer on an electrically non-conductive plastic member includes: mixing a plastic material and a laser-sensitive additive to form a mixture, followed by injection molding the mixture to form an electrically non-conductive plastic member; irradiating a part of a surface of the electrically non-conductive plastic member with laser to engrave the electrically non-conductive plastic member so as to form a roughened region; forming an activating layer on the roughened region; and forming a metal layer on the activating layer on the roughened region of the electrically non-conductive plastic member. This method is suitable for making a housing for a mobile device.

Abstract: An Internet communication system including a first access point, a second access point, a first caller and a first callee is provided. The first access point and the second access point are respectively located in a first LAN and a second LAN. The first caller, having a probing-based mechanism, accesses the Internet via the first access point and has voice packets with a first transmission priority. The first callee accesses the Internet via the second access point. The first caller transmits a simulation packet to the first callee for probing a transmission quality of an end-to-end transmission path of the first caller and the first callee to determine whether to invite the first callee to communicate via the Internet.