A mounting structure for mounting a film-shaped electric device to a glass panel, comprising: a resin panel attached to a surface of the film-shaped electric device to form a panel-shaped electric device jointly with the film-shaped electric device, the panel-shaped electric device having a first edge and a second edge; and first and second retaining members (4R, 4L) attached to one surface of the glass panel in correspondence with the first and second edges of the panel-shaped electric device, respectively, each of the first and second retaining members defining a groove such that the groove opens toward a region of the glass panel to be covered by the panel-shaped electric device, wherein the panel-shaped electric device is retained by the first and second retaining members with the first and second edges of the panel-shaped electric device being received in the grooves defined by the first and second retaining members, respectively, such that the surface of the film-shaped electric device having the resin panel attached thereto faces away from the glass panel, wherein a difference in a thermal expansion coefficient between the film-shaped electric device and the resin panel is smaller than a difference in a thermal expansion coefficient between the film-shaped electric device and the glass panel, wherein each retaining member (4R, 4L) is made of a material having a thermal expansion coefficient closer to that of the glass panel than the resin panel, and wherein the first and second retaining members (4R, 4L) are arranged such that a space is formed between a bottom of the groove defined by each of the first and second retaining members (4R, 4L) and the corresponding edge of the panel-shaped electric device when the panel-shaped electric device is retained by the first and second retaining members (4R, 4L), such that the space allows thermal expansion of the panel-shaped electric device without restriction to the first and second edges of the panel-shaped electric device. first and second retaining members (4R, 4L) attached to one surface of the glass panel in correspondence with the first and second edges of the panel-shaped electric device, respectively, each of the first and second retaining members defining a groove such that the groove opens toward a region of the glass panel to be covered by the panel-shaped electric device, wherein the panel-shaped electric device is retained by the first and second retaining members with the first and second edges of the panel-shaped electric device being received in the grooves defined by the first and second retaining members, respectively, such that the surface of the film-shaped electric device having the resin panel attached thereto faces away from the glass panel, wherein a difference in a thermal expansion coefficient between the film-shaped electric device and the resin panel is smaller than a difference in a thermal expansion coefficient between the film-shaped electric device and the glass panel, wherein each retaining member (4R, 4L) is made of a material having a thermal expansion coefficient closer to that of the glass panel than the resin panel, and wherein the first and second retaining members (4R, 4L) are arranged such that a space is formed between a bottom of the groove defined by each of the first and second retaining members (4R, 4L) and the corresponding edge of the panel-shaped electric device when the panel-shaped electric device is retained by the first and second retaining members (4R, 4L), such that the space allows thermal expansion of the panel-shaped electric device without restriction to the first and second edges of the panel-shaped electric device.