Mitsubishi Denki Kabushiki Kaisha

Kazuhisa Hemmi

Atsushi Ito

Hironobu Arimoto

Kazuo Kimura

Hisatoshi Kishi

In a cell drive-type flat display panel, a metal electrode pad and common signal line are disposed outside the area (effective area) facing a recessed portion forming a cell. The individual cell electrode acting as a cell electrode within the effective area is connected to a metal electrode pad by extending each cell electrode to the metal electrode pad , while the metal electrode is not extended toward the effective area to cover each cell electrode. A common electrode is connected to the common signal line by extending each cell electrode to the metal electrode pad , while the metal electrode is not extended toward the effective area and to cover each cell electrode. This structure makes the cell electrodes flat and can reduce the drive voltage from the effect resulting from the suppressed dielectric film. The metal electrode pad has a top surface on which a pin electrode is posted. The dielectric layer has an opening from which the metal electrode pad is exposed, and covers the edges of the metal electrode pad . This structure can prevent the transparent electrode layer bridging the individual electrode with the metal electrode pad from making contact with the dielectric layer or frit with high reactivity.

Flat display panel

Electric discharge is caused in a concave portion ( ) to generate ultraviolet light. The ultraviolet light is incident upon a fluorescent layer ( ), which emits visible light. The emitted visible light is transmitted through transparent electrodes ( ) and radiated from a surface. Because spherical materials ( ) are arranged on the inner surface of the concave portion ( ), the surface area of the fluorescent layer ( ) is enlarged, more ultraviolet light enters the fluorescent layer ( ), and the conversion efficiency from ultraviolet to visible light is enhanced.

Panel display with a fluorescent layer

A flat display panel is provided which can improve the reliability of the contact portion where a flat plate and a back plate are bonded together and can suppress the display dead space. Recessed portions are formed in a glass substrate so that a sealing wall is formed along the outer fringe of a back plate . The front plate 54 includes a protrusion protruding outward from the sealing wall on the outer fringe portion thereof. The contact portion between the front plate and the back plate is sealed by depositing fritted glass onto the corner portion defined by the protrusion and the side surface of the back plate . In order to improve the sealing effect, the fritted glass is inserted into the gap at the bonding portion. The groove is formed on the top surface of the sealing wall to prevent the fritted glass from intruding in to the discharge space.

Flat panel display with reduced display dead space

In this screen manufacturing method, a method of effectively cooling flat display panels (1) which form a display screen is provided. A mechanism for cooling the flat display panels (1) is also provided. More specifically, in this manufacturing method, when a display screen (50) is assembled, clearances (41) are provided between modules (40) in which the flat display panels (1) are lined up to, thereby facilitate air circulation driven by a fan (42). Further, a radiation member is fitted to a holder which fixes the flat display panels (1). Thus, a surface area of the holder becomes larger by a portion equivalent to the radiation member, whereby radiative cooling is enhanced.

Screen manufacturing method using flat display panels and radiation

A screen manufacturing method makes it possible to manufacture a display screen using flat display panels and to consistently form a flat display screen. More specifically, m flat display panels are fixed on a holder during a manufacturing process of the display screen, and then a flexible substrate is fixed to electrode pins of a flat display panel which project over a back surface of the holder so as to form a unit. After fitting a frame to the unit, a part on which a connector is arranged with a part of the flexible substrate being bent is fitted on a surface of the frame so as to form a submodule. Then, by connecting submodules, a module is formed. By assembling the module, a display screen is produced.

Growing community of inventors

Tokyo, Japan

Kazuhisa Hemmi