US Patent 7931066 Roman shade

Upper ends of the first fabric and the second fabric are attached to the head rail, respectively, and the first lift cord and the second lift cord suspended from the head rail in a liftable manner are coupled to the first fabric and the second fabric, respectively. The first lift cord is routed into a rear side of the first fabric and the second lift cord is routed into a rear side of the second fabric so as to come over an upper end of the second fabric. An extension member is provided so as to extend downwardly along with a lower edge of a rear portion of the head rail, and the upper end of the second fabric is attached to a front surface of the extension member.