An ultra-miniaturized light-emitting unit for a medical endoscopic instrument, wherein the light-emitting unit defines a main emission direction, and has - a semiconductor element extending in a planar manner substantially orthogonally to the main emission direction with a light emission side facing in the main emission direction and a contact side facing away from the main emission direction, and - an insulating element, wherein the insulating element has a first portion and a substantially L-shaped second portion laterally encompassing the semiconductor element, so that a part of the L-shaped second portion rests on the light emission side of the semiconductor element, wherein a conductor element is embedded in the insulation element and extends from the first portion of the insulating element through the second portion of the insulating element, wherein a first contact region of the conductor element in the first portion of the insulating element can electrically contact a first connection terminal and a second contact region of the conductor element in the second portion of the insulating element electrically contacts the light emission side of the semiconductor element, and wherein the contact side of the semiconductor element can electrically contact a second connection terminal, wherein the insulating element inclusive of embedded conductor element is flexible and is formed as a folded flexible printed circuit board, wherein the flexible printed circuit board has a first of at least one fold line running substantially orthogonally to the main emission direction, wherein the L-shape of the second portion of the insulating element is formed by means of the first fold edge. - a semiconductor element extending in a planar manner substantially orthogonally to the main emission direction with a light emission side facing in the main emission direction and a contact side facing away from the main emission direction, and - an insulating element, wherein the insulating element has a first portion and a substantially L-shaped second portion laterally encompassing the semiconductor element, so that a part of the L-shaped second portion rests on the light emission side of the semiconductor element, wherein a conductor element is embedded in the insulation element and extends from the first portion of the insulating element through the second portion of the insulating element, wherein a first contact region of the conductor element in the first portion of the insulating element can electrically contact a first connection terminal and a second contact region of the conductor element in the second portion of the insulating element electrically contacts the light emission side of the semiconductor element, and wherein the contact side of the semiconductor element can electrically contact a second connection terminal, wherein the insulating element inclusive of embedded conductor element is flexible and is formed as a folded flexible printed circuit board, wherein the flexible printed circuit board has a first of at least one fold line running substantially orthogonally to the main emission direction, wherein the L-shape of the second portion of the insulating element is formed by means of the first fold edge.