Abstract: A light-emitting device includes a substrate and a semiconductor light-emitting stack. The substrate includes an upper surface, a first side surface, and a second side surface adjacent to the first side surface. The semiconductor light-emitting stack includes a first conductivity type semiconductor layer, a light-emitting layer, and a second conductivity type semiconductor layer that are sequentially disposed on the upper surface of the substrate in such order. The first side surface includes X number of first laser inscribed marks, and the second side surface includes Y number of second laser inscribed marks, in which Y>X>0 and Y?3. A method for manufacturing the light-emitting device is also provided herein.

Abstract: A light-emitting diode (LED) chip includes a semiconductor epitaxial structure and a reflective structure. The reflective structure is formed on an upper surface and side surfaces of the semiconductor epitaxial structure. The reflective structure has a reflectance of less than 30% for light having a first wavelength which is different from a wavelength of light emitted from the semiconductor epitaxial structure. A semiconductor light-emitting device including the LED chip, and a display device including a plurality of the LED chips are also disclosed.

Abstract: The present disclosure provides a manufacturing method for an LED display screen. The method includes preparing a batch of LED chips of the same or different specification; picking up the LED chips illogically according to a random sampling method, and arranging the picked led chips in sequence; and packaging and assembling the LED chips arranged in sequence to form the LED display screen. The LED display screen includes an area which includes a plurality of LED chips, and at least two adjacent LED chips of the plurality of LED chips are of different specifications, the specification of the LED chip comprising a specification of at least one of color and brightness.

Abstract: A tool mount assembly has a mount and a first cover. The mount has a placing surface and multiple linear tool grooves formed in the placing surface. The first cover is pivotally connected with the mount and covers the placing surface to close the tool grooves.

Abstract: A tool mount assembly has a mount and a first cover. The mount has a placing surface and multiple linear tool grooves formed in the placing surface. The first cover is pivotally connected with the mount and covers the placing surface to close the tool grooves.

Abstract: A hexagonal wrench has a head. The head has an end surface, six equal side surfaces and at least one groove. Each side surface has a left edge segment and a right edge segment adjacent to the left edge segment of an adjacent side surface. The at least one groove is formed in at least one of the right edge segments and the left edge segments and extends to the end surface. Therefore, the head can engage securely an inner surface of a socket to rotate the socket even when the socket is worn or rounded.

Abstract: A hexagonal wrench has a head. The head has an end surface, six equal side surfaces and at least one groove. Each side surface has a left edge segment and a right edge segment adjacent to the left edge segment of an adjacent side surface. The at least one groove is formed in at least one of the right edge segments and the left edge segments and extends to the end surface. Therefore, the head can engage securely an inner surface of a socket to rotate the socket even when the socket is worn or rounded.

Abstract: A network camera with a network interface includes an image sensing unit for capturing image information, a digital image processing unit for converting and compressing the image information into a digital video signal, a serial data encoding unit for encoding the digital video signal to generate a data signal in compliance with an operating system software interface and a network control unit for converting the data signal into a serial network signal packet, such that a user can connect the network camera to a computer or an embedded system device having a network interface through a network bridge. Compared with a conventional network camera limited by the length of its USB cable, the innovative network camera can increase the distance of connecting the network camera and the computer significantly to improve the convenience and the scope of application.

Abstract: A bidirection-rotational conducting device has a pen cap. The pen cap can be twisted in two opposite directions, and a light emitting body cab be turned on and switch off accordingly. At the same time, a refill unit of the bidirection-rotational conducting device will extend outwardly in accordance to the illumination of the light emitting body, assisting the writing of the user. Further, the color of the light emitting body can be replaced, offering a special visual appeal. The conducting device comprises a holding unit having a holdable outer wall; a refill unit housed within said holding unit; a light unit also housed within said holding unit further including a light emitting body; and a rotational unit housed within a pen cap and connected to said holding unit by a screwed structure.