Patent ID: 7812913
Filing Date: 2010-10-12
Classification: G02F,H05K

Abstract:
1. A display device comprising: a display panel; and a flexible printed circuit board which has one end thereof connected to a terminal portion of the display panel; wherein the flexible printed circuit board includes a base member, a line layer which is formed on the base member using a metal layer, a surface protective cover which covers the line layer, and a folded portion; wherein the line layer includes a signal line which supplies control signals or display data to the display panel and a dummy line; wherein the signal line is covered with the surface protective cover at the folded portion; wherein the folded portion includes at least one exposed portion in which the dummy line is exposed from the surface protective cover ranging from a folding start point to a folding finish point; and wherein the total area of the exposed portion at the folded portion assumes 10% or more and 50% or less of an area of the folded portion.