Patent ID: 8791881

Claim:
A display device, comprising: a thin film transistor array substrate; a pair of partition walls on the thin film transistor array substrate; a light-emitting portion above the thin film transistor array substrate, the light-emitting portion including a first electrode, a second electrode, and a light-emitting layer located between the first electrode and the second electrode above the thin film transistor array substrate, the second electrode and the light-emitting layer being located between the pair of partition walls; and a pixel circuit for applying a voltage to the first electrode, wherein each partition wall of the pair of partition walls includes a conductive portion and an insulating portion, the insulating portion covering side surfaces of the conductive portion for insulating the first electrode and the light-emitting layer from the conductive portion, wherein the second electrode covers an upper surface of the conductive portion of each partition wall of the pair of partition walls and is electrically connected to the pixel circuit via the conductive portion of each partition wall of the pair of partition walls, wherein the conductive portion of each partition wall of the pair of partition walls has a trapezoidal cross-section, wherein the second electrode is on a first base of the trapezoidal cross-section of the conductive portion and a second base of the trapezoidal cross-section of the conductive portion is on the thin film transistor array substrate, and wherein the first base of the trapezoidal cross-section of the conductive portion has a length greater than a length of the second base of the trapezoidal cross-section of the conductive portion.