Abstract: A flexible circuit board is disclosed. The flexible circuit board of the present invention comprises: a substrate part; and a transmission part formed to extend from the substrate part, and having two or more lines, which are aligned in parallel in a thickness direction, for transmitting a high frequency.

Abstract: In one example, a flexible circuit board includes a signal line disposed between a first ground and a second ground; a dielectric disposed between the first ground and the signal line and between the second ground and the signal line; and via holes formed by filling a plurality of holes, which are formed in a vertical direction such that the first ground and the second ground are electrically connected, with conductors, wherein the signal line is laterally bent so as to be spaced apart from positions where the via holes are formed.

Abstract: In one example, a flexible circuit board includes a signal line disposed between a first ground and a second ground; a dielectric disposed between the first ground and the signal line and between the second ground and the signal line; a cover layer disposed below the first ground and having openings formed therein such that the first ground is exposed at certain intervals; and a position alignment portion formed across the opening and configured to bisect an area of the opening.

Abstract: In one example, a flexible circuit board includes a signal line disposed between a first ground and a second ground; a dielectric disposed between the first ground and the signal line and between the second ground and the signal line; a cover layer disposed below the first ground and having openings formed therein such that the first ground is exposed at certain intervals; and a position alignment portion formed across the opening and configured to bisect an area of the opening.

Abstract: In one example, a flexible circuit board includes a signal line disposed between a first ground and a second ground; a dielectric disposed between the first ground and the signal line and between the second ground and the signal line; a cover layer disposed below the first ground and having openings formed therein such that the first ground is exposed at certain intervals; and a position alignment portion formed across the opening and configured to bisect an area of the opening.

Abstract: In one example, a flexible circuit board includes a signal line disposed between a first ground and a second ground; a dielectric disposed between the first ground and the signal line and between the second ground and the signal line; a cover layer disposed below the first ground and having openings formed therein such that the first ground is exposed at certain intervals; and a position alignment portion formed across the opening and configured to bisect an area of the opening.

Abstract: A flexible circuit board having enhanced bending durability and a method for preparing same are provided. The method comprises: forming a signal line and a first ground layer on a first dielectric body and forming a second ground layer on a bottom side of the first dielectric body; preparing a second dielectric body; preparing a first bonding sheet and a first protective sheet which is connected to one end of the first bonding sheet or of which one or more parts are overlapped on one end of the first bonding sheet; bonding the second dielectric body onto the first dielectric body by means of the first bonding sheet; forming a via hole such that the first ground layer and the second ground layer are conducted; and cutting in a width direction the second dielectric body placed on the first protective sheet.

Abstract: A flexible circuit board having enhanced bending durability and a method for preparing same are provided. The method comprises: forming a signal line and a first ground layer on a first dielectric body and forming a second ground layer on a bottom side of the first dielectric body; preparing a second dielectric body; preparing a first bonding sheet and a first protective sheet which is connected to one end of the first bonding sheet or of which one or more parts are overlapped on one end of the first bonding sheet; bonding the second dielectric body onto the first dielectric body by means of the first bonding sheet; forming a via hole such that the first ground layer and the second ground layer are conducted; and cutting in a width direction the second dielectric body placed on the first protective sheet.

Abstract: A laptop computer, according to the present invention, comprises: a main body part comprising a mainboard and a coaxial cable, one end of which is connected to the mainboard; and a display part hinge-coupled with the main body part and comprising a flexible printed circuit board which is installed on the back of the display part and has one end thereof coupled with the other end of the coaxial cable.

Abstract: In one example, a flexible circuit board includes a signal line disposed between a first ground and a second ground; a dielectric disposed between the first ground and the signal line and between the second ground and the signal line; and a flatness improvement portion disposed on an upper portion of the second ground.

Abstract: In one example, a flexible circuit board includes a signal line disposed between a first ground and a second ground; a dielectric disposed between the first ground and the signal line and between the second ground and the signal line; and via holes formed by filling a plurality of holes, which are formed in a vertical direction such that the first ground and the second ground are electrically connected, with conductors, wherein the signal line is laterally bent so as to be spaced apart from positions where the via holes are formed.

Abstract: In one example, a flexible circuit board includes a signal line disposed between a first ground and a second ground; a dielectric disposed between the first ground and the signal line and between the second ground and the signal line; a cover layer disposed below the first ground and having openings formed therein such that the first ground is exposed at certain intervals; and a position alignment portion formed across the opening and configured to bisect an area of the opening.

Abstract: Disclosed is a flexible circuit board having a three-layer dielectric body and four-layer ground layer structure. A flexible circuit board having a three-layer dielectric body and four-layer ground layer structure, according to the present invention, comprises: a first dielectric body; a second dielectric body facing the flat surface of the first dielectric body; a third dielectric body facing the bottom side of the first dielectric body; a signal line formed on the flat surface of the first dielectric body; a pair of first ground layers laminated on the flat surface of the first dielectric body and having the signal line therebetween; second ground layers laminated on the bottom side of the first dielectric body so as to correspond to the first ground layers; a third ground layer laminated on the flat surface of the second dielectric body; and a fourth ground layer laminated on the bottom side of the third dielectric body.

Abstract: A flexible circuit board having enhanced bending durability and a method for preparing same are provided. The method comprises: forming a signal line and a first ground layer on a first dielectric body and forming a second ground layer on a bottom side of the first dielectric body; preparing a second dielectric body; preparing a first bonding sheet and a first protective sheet which is connected to one end of the first bonding sheet or of which one or more parts are overlapped on one end of the first bonding sheet; bonding the second dielectric body onto the first dielectric body by means of the first bonding sheet; forming a via hole such that the first ground layer and the second ground layer are conducted; and cutting in a width direction the second dielectric body placed on the first protective sheet.

Abstract: Provided is a semiconductor device including a target circuit, a monitoring circuit, and a voltage controller. The target circuit includes a transistor. The monitoring circuit is configured to measure a temperature of the target circuit or measure a delay time between an input and an output of the target circuit. The voltage controller is configured to adjust a driving voltage for driving the target circuit or a back-bias voltage for adjusting a threshold voltage of the transistor by referring to at least one of the temperature and the delay time. As the temperature increases, the delay time decreases.

Abstract: The present invention provides a flexible circuit board having enhanced bending durability. The flexible circuit board comprises: a first board part; a second board part which extends from one side of the first board part and is thinner than the first board part so as to be bendable; and a third board part which extends from one side of the second board part and is thinner than the second board part so as to be bendable.

Abstract: A flexible circuit board is disclosed. The flexible circuit board of the present invention comprises: a substrate part; and a transmission part formed to extend from the substrate part, and having two or more lines, which are aligned in parallel in a thickness direction, for transmitting a high frequency.

Abstract: A laptop computer, according to the present invention, comprises: a main body part comprising a mainboard and a coaxial cable, one end of which is connected to the mainboard; and a display part hinge-coupled with the main body part and comprising a flexible printed circuit board which is installed on the back of the display part and has one end thereof coupled with the other end of the coaxial cable.

Abstract: A flexible printed circuit board is introduced. The flexible printed circuit board of the present invention has a first substrate part, comprising a first signal line, and a second substrate part, comprising a second signal line that is parallel to the first signal line, arranged on the same plane while having a shielding part interposed therebetween.

Abstract: Disclosed is a flexible circuit board having a three-layer dielectric body and four-layer ground layer structure. A flexible circuit board having a three-layer dielectric body and four-layer ground layer structure, according to the present invention, comprises: a first dielectric body; a second dielectric body facing the flat surface of the first dielectric body; a third dielectric body facing the bottom side of the first dielectric body; a signal line formed on the flat surface of the first dielectric body; a pair of first ground layers laminated on the flat surface of the first dielectric body and having the signal line therebetween; second ground layers laminated on the bottom side of the first dielectric body so as to correspond to the first ground layers; a third ground layer laminated on the flat surface of the second dielectric body; and a fourth ground layer laminated on the bottom side of the third dielectric body.