Display panel with electron-emitting devices on substrates and cathode and anode electrodes
AssigneePioneer Corporation
InventorsTakeru Okada, Takashi Yamada
Life of this patent
Estimating the term…
Abstract
The front glass substrate and the back glass substrate are placed opposite each other with display cells in between. MIM electron-emitting devices each structured by the opposed cathode electrode and gate electrode sandwiching an insulator layer are arranged in matrix form on the inner face of the front glass substrate. An anode electrode and phosphor layers emitting visible light by being excited by ultraviolet light are provided on the inner face of the back glass substrate. The display cells are filled with an ultraviolet-light-emitting gas generating ultraviolet light by being excited by electrons.
Claims19
A display panel, comprising:
- a pair of opposed first and second substrates placed on either side of a required space;
- electron-emitting devices each comprising a cathode electrode emitting high energy electrons of 7 eV to 12 eV, a gate electrode, and an insulator sandwiched between the cathode electrode and the gate electrode, and provided in matrix form between the pair of first and second substrates to emit electrons into the space;
- an anode electrode;
- phosphor layers emitting visible light by being excited by ultraviolet light;
- and
- an ultraviolet-light-generating gas filling the space between the pair of first and second substrates and generating ultraviolet light by being excited by the electrons;
- wherein the electron-omitting devices are provided on an inner face of the first substrate of the pair of first and second substrates serving as the display surface of the panel,
- wherein on the inner face of the first substrate, the cathode electrodes each extend in a first direction along either width or length of the first substrate and are regularly arranged in a second direction along either width or length of the first substrate at right angles to the second direction, the gate electrodes each extend in the second direction and are regularly arranged in the first direction, an insulator layer is interposed between the cathode electrodes and the gate electrodes, and each of the electron-emitting devices is formed in each of the intersections of the cathode electrodes and the gate electrodes with the insulator layer in between,
- wherein each of the cathode electrodes, extending in the first direction of the substrate, has portions facing the gate electrode and each having a width larger in the second direction of the substrate than that of the other portions of the cathode electrode, and
- wherein the anode electrode extends parallel to the gate electrode on a back-face facing of the insulator layer covering the cathode electrodes, and the anode electrode intersects with the portions of the cathode electrodes each having the width smaller than that of the portion facing the gate electrode, with the insulator layer being interposed between the anode electrode and the portion of the cathode electrode.
Dependencies are inferred from the claim text.