A light-emitting device includes: a board which is a resin board having an elongated shape; a conductive film formed on the board; and a plurality of LED elements disposed over the board. The plurality of LED elements include two adjacent LED elements arranged along a first direction. The conductive film includes (i) a first conductive part which electrically connects the two adjacent LED elements and at least a portion of which is located between the two adjacent LED elements and (ii) a second conductive part located on two outer sides of the first conductive part in a second direction intersecting the first direction. The second conductive part has a slit on each of the two outer sides of the first conductive part, and the slit extends in the second direction intersecting the longitudinal direction of the board.

A light emitting device includes a substrate, a light emitting device and a sealing resin member. The substrate includes a flexible base, a plurality of wiring portions, a groove portion and a pair of terminal portions. The flexible base extends in a first direction corresponding to a longitudinal direction of the substrate and the plurality of wiring portions are arranged on the flexible base. The groove portion is formed between the plurality of wiring portions spaced apart from each other. The pair of terminal portions is arranged along the first direction at the both sides of the plurality of wiring portions. The light emitting element is disposed on the substrate and electrically connected to the plurality of wiring portions. The sealing resin member seals the light emitting element and a part of the substrate. The light emitting element is mounted on the substrate in a flip-chip manner.

A system for power delivery network (PDN) isolation includes a multi-layer printed circuit board (PCB) in which a power distribution layer has a root conductive region and two or more branch conductive regions fanning out from the root conductive region. Each branch conductive region is insulated from other branch conductive regions by a non-conductive region. Each branch conductive region has at least one power delivery connection. Each of various electronic circuits mounted on the PCB and sharing the same PDN may be shorted to one of the branch conductive regions.

The invention relates to an illumination system (80) comprising at least one conductor-bar-free assembly profile rail (60) for accommodating at least one lighting unit (70) that is insertable into the assembly profile rail (60), and at least one supply connector (50) that is insertable into the assembly profile rail (60). In this case, the assembly profile rail (60) is in the form of an extruded plastics or aluminum profile and the lighting unit (70) is in the form of a long rigid strip which has at least one semiconductor light source (71) on its front surface and at least two exposed, continuous contacting conductor tracks (74) on its back surface. The lighting unit (70) further comprises a housing element (73) which is designed to be mechanically couplable to the assembly profile rail (60) and which is used to hold the lighting unit (70) in the assembly profile rail (60). The supply connector (50) comprises contact devices (52), by means of which it is possible to establish electrical coupling of the contacting conductor tracks (74) of the lighting unit (70) to those of a further lighting unit (70) and/or to a supply cable (67), and further comprises a housing element (56b) which is mechanically couplable to the assembly profile rail (60) or to the lighting unit (70) and which is used to hold the supply connector (50) in the assembly profile rail (60).

The present invention relates to a printed circuit board and an image display device including same. The printed circuit board according to an embodiment of the present invention includes a power pattern layer, a ground pattern layer, and a wiring pattern layer on which circuit elements are disposed, wherein the wiring pattern layer includes a signal line pattern through which an electrical signal is transmitted, and a ground pattern electrically disconnected from the signal line pattern and having at least one via hole formed therein which is electrically connected to the ground pattern layer, wherein the signal line pattern comes into contact with a first end of an overvoltage cutoff element that operates in response to an overvoltage, greater than or equal to a predetermined voltage value, being applied to the signal line pattern, wherein the ground pattern includes a first detailed pattern coming into contact with a second end of the overvoltage cutoff element, a second detailed pattern having the via-hole formed therein, and a plurality of third detailed patterns electrically connecting the first detailed pattern and the second detailed pattern, wherein the via hole is formed in a remaining region except for a plurality of first regions of the second detailed pattern that extend from each of the third detailed patterns in a length direction of each of the plurality of third detailed patterns. Various other embodiments are possible.

The invention relates to an illumination system (80) comprising at least one conductor-bar-free assembly profile rail (60) for accommodating at least one lighting unit (70) that is insertable into the assembly profile rail (60), and at least one supply connector (50) that is insertable into the assembly profile rail (60). In this case, the assembly profile rail (60) is in the form of an extruded plastics or aluminum profile and the lighting unit (70) is in the form of a long rigid strip which has at least one semiconductor light source (71) on its front surface and at least two exposed, continuous contacting conductor tracks (74) on its back surface. The lighting unit (70) further comprises a housing element (73) which is designed to be mechanically couplable to the assembly profile rail (60) and which is used to hold the lighting unit (70) in the assembly profile rail (60). The supply connector (50) comprises contact devices (52), by means of which it is possible to establish electrical coupling of the contacting conductor tracks (74) of the lighting unit (70) to those of a further lighting unit (70) and/or to a supply cable (67), and further comprises a housing element (56b) which is mechanically couplable to the assembly profile rail (60) or to the lighting unit (70) and which is used to hold the supply connector (50) in the assembly profile rail (60).