The present invention provides a maintenance board that can be used for a maintenance process other than removing static electricity from a component mounting device by being conveyed by a conveyance device of the component mounting device. The maintenance board is conveyed to the conveyance device of the component mounting device. The maintenance board includes at least one of: a brush configured to brush a maintenance target object; a cleaning nozzle configured to be held in an attachable manner to a work head of the component mounting device and to blow air to the maintenance target object; a pressure sensor configured to measure a detachable load of a component to a suction nozzle attached to the work head and a mounting load of a component to a board; and a blower configured to blow air toward the work head.

A method for selective processing of a panel, the method may include receiving a panel that has a bottom side and a top side and comprises a first group of drilled holes and a second group of drilled holes; at least partially sealing a bottom of any through hole of the first group; filling, by a selective filing process, any drilled hole of the first group that has a top opening to provide at least partially filled drilled holes of the first group without filling the second group of drilled holes; and plugging, by a selective plugging process, a top of any drilled hole of the first group.

A method for closing a channel-shaped opening with a cross-sectional area and a passage length, more particularly through-bores or plated through-holes in printed circuit boards, using a liquid curable or curing filler material. The opening is closed by a digitally controlled application method with two discharge heads arranged opposite one another, preferably in an inkjet method with two discharge heads designed as print heads and arranged opposite one another. The two discharge heads are controlled such that the opening is filled with the filler material from both sides through the two ends simultaneously. The filler material is discharged by the two discharge heads such that the quantities of discharged filler material meet inside the opening.

A method of preparing a non-conductive substrate to allow metal plating thereon. The method includes the steps of a) contacting the non-conductive substrate with a conditioner comprising a conditioning agent; b) applying a carbon-based dispersion to the conditioned substrate, wherein the carbon-based dispersion comprises carbon or graphite particles dispersed in a liquid solution; and c) etching the non-conductive substrate. The etching step is performed before the liquid carbon-based dispersion dries on the non-conductive substrate.

A method of preparing a non-conductive substrate to allow metal plating thereon. The method includes the steps of a) contacting the non-conductive substrate with a conditioner comprising a conditioning agent; b) applying a carbon-based dispersion to the conditioned substrate, wherein the carbon-based dispersion comprises carbon or graphite particles dispersed in a liquid solution; and c) etching the non-conductive substrate. The etching step is performed before the liquid carbon-based dispersion dries on the non-conductive substrate.

A display device and a method of manufacturing the display device are capable of substantially minimizing damage to a display panel. The display device includes: a first substrate including a display area and a pad area; a polarization film disposed at an upper surface of the first substrate to overlap the display area; a flexible printed circuit board disposed at a lower surface of the first substrate; a via hole defined through the first substrate at the pad area; and a connection metal located at the via hole. The connection metal includes a connection portion disposed in the via hole and a first protruding portion that protrudes with respect to the first substrate, and the polarization film is spaced apart from the via hole in a plan view.

A printing screen for use through-plating a printed circuit board. The printing screen has at least one screen hole for filling a larger hole compared to a reference hole in a ceramic substrate. This printing screen has an area-reducing and area-dividing geometry that divides the screen hole into at least two hole sections.

A display device and a method of manufacturing the display device are capable of substantially minimizing damage to a display panel. The display device includes: a first substrate including a display area and a pad area; a polarization film disposed at an upper surface of the first substrate to overlap the display area; a flexible printed circuit board disposed at a lower surface of the first substrate; a via hole defined through the first substrate at the pad area; and a connection metal located at the via hole. The connection metal includes a connection portion disposed in the via hole and a first protruding portion that protrudes with respect to the first substrate, and the polarization film is spaced apart from the via hole in a plan view.

A method of preparing a non-conductive substrate to allow metal plating thereon. The method includes the steps of a) contacting the non-conductive substrate with a conditioner comprising a conditioning agent; b) applying a carbon-based dispersion to the conditioned substrate, wherein the carbon-based dispersion comprises carbon or graphite particles dispersed in a liquid solution; and c) etching the non-conductive substrate. The etching step is performed before the liquid carbon-based dispersion dries on the non-conductive substrate.

The present invention provides a maintenance board that can be used for a maintenance process other than removing static electricity from a component mounting device by being conveyed by a conveyance device of the component mounting device. The maintenance board is conveyed to the conveyance device of the component mounting device. The maintenance board includes at least one of: a brush configured to brush a maintenance target object; a cleaning nozzle configured to be held in an attachable manner to a work head of the component mounting device and to blow air to the maintenance target object; a pressure sensor configured to measure a detachable load of a component to a suction nozzle attached to the work head and a mounting load of a component to a board; and a blower configured to blow air toward the work head.