A light emitting device includes a vacuum vessel, a recess portion, a cathode electrode, an electron emission region, a gate electrode, and a gate terminal portion. The vacuum vessel includes a first substrate, a second substrate facing the first substrate, and a sealing member disposed between the first substrate and the second substrate. The recess portion is formed to be depressed along a direction on a surface of the first substrate facing the second substrate, and the cathode electrode is formed in the recess portion and extending along the one direction. The electron emission region is formed on the cathode electrode within the recess portion. The gate electrode includes a metal plate on the surface of the first substrate along a direction crossing the cathode electrode at an inner side of the sealing member. The gate terminal portion is formed on the surface of the first substrate on inner and outer sides of the sealing member, traversing under the sealing member and is electrically connected with the gate electrode. The gate terminal portion includes a conductive film having a thickness smaller than a thickness of the gate electrode.