A tiled electronic device comprising a plurality of LED display panels arranged in an array to display an integral image spliced into images displayed by the LED display panels, wherein each of the LED display panels comprises: a flexible substrate which comprises a display portion and a bent portion directly connected to the display portion; a plurality of pixels arranged in an array on the display portion on a plane along a first extension direction and a second extension direction perpendicular to said first extension direction on the plane disposed on the display portion, wherein each pixel comprises a light emitting diode electrically connected to a light-unit electrode and a common electrode and wherein each pixel is electrically connected to a transistor of the LED display panel; and a plurality of signal wires connected to the pixels and disposed on the flexible substrate to electrically connect to the pixels; wherein an edge of a respective display portion viewed in the first extension direction is disposed adjacent to said bent portion, two notches are formed on two opposite sides of the bent portion in the second extension direction, each of two adjacent signal wires electrically connecting to pixels disposed near an edge of the respective display portion and one notch of the two notches has a first segment disposed on the respective display portion and a second segment disposed on the respective bent portion, wherein the two first segments have a first pitch in the second extension direction, the two second segments have a second pitch in the second extension direction, and the first pitch is greater than the second pitch; and each of the two signal wires electrically connecting to pixels disposed near the edge of the respective display portion and said one notch of the two notches further has an inclined segment electrically connected to the first segment and the second segment, wherein the inclined segment is inclined relative to and connected to the first segment and the second segment; and wherein each of the inclined segments overlaps with at least a portion of the light-unit electrode, the common electrode or said transistor. a flexible substrate which comprises a display portion and a bent portion directly connected to the display portion; a plurality of pixels arranged in an array on the display portion on a plane along a first extension direction and a second extension direction perpendicular to said first extension direction on the plane disposed on the display portion, wherein each pixel comprises a light emitting diode electrically connected to a light-unit electrode and a common electrode and wherein each pixel is electrically connected to a transistor of the LED display panel; and a plurality of signal wires connected to the pixels and disposed on the flexible substrate to electrically connect to the pixels; wherein an edge of a respective display portion viewed in the first extension direction is disposed adjacent to said bent portion, two notches are formed on two opposite sides of the bent portion in the second extension direction, each of two adjacent signal wires electrically connecting to pixels disposed near an edge of the respective display portion and one notch of the two notches has a first segment disposed on the respective display portion and a second segment disposed on the respective bent portion, wherein the two first segments have a first pitch in the second extension direction, the two second segments have a second pitch in the second extension direction, and the first pitch is greater than the second pitch; and each of the two signal wires electrically connecting to pixels disposed near the edge of the respective display portion and said one notch of the two notches further has an inclined segment electrically connected to the first segment and the second segment, wherein the inclined segment is inclined relative to and connected to the first segment and the second segment; and wherein each of the inclined segments overlaps with at least a portion of the light-unit electrode, the common electrode or said transistor.