LIGHT EMITTING ELEMENT

• Main Authors: NAMIKAWA MAMORU, TONEGAWA TAKESHI
• Format: Patent
• Language: English
• Published: 21.12.2001
• Edition: 7
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS; ELECTRICITY

PROBLEM TO BE SOLVED: To provide a display element that can arrange the required quantity of getter near a light emitting part, where gas is easily generated, in an envelope 1 of a high vacuum atmosphere. SOLUTION: The display element is provided with a post member 20 of hollow cylinder shape between an anode substrate and a cathode substrate. Grooves 21 are formed at the anode substrate side end part of the post member. The evaporating type getter 22 is held inside the post member 20 by a support member. When the getter is evaporated by heating, evaporated getter substance goes out of the grooves into the envelope. Since the grooves face an anode substrate region without a picture element, a mirror is formed in a position off the picture element. The emission of the picture element is not thereby disturbed by the mirror. Since the interior of the post member is used as the layout space of the getter, a new space is dispensed with to increase area for forming a getter film. The effect of the getter is increased making effective use of the anode side area suitable for adsorbing gas. The service life of the display element can thereby be improved.