The invention provides a small-sized thin electro-optical device with enough intensity. The electro-optical device includes an electro-optical panel , a holder that directly or indirectly holds the electro-optical panel, an inner frame as a support and a holding frame as a mounting part. At least a part of the holder is formed of a metallic plate, and the at least part of the holder includes a turned-down portion formed by folding a part of a base portion of the metallic plate. The end of the turned-down portion forms a step portion to support the holder.