Institute for Advanced Engineering

Jae Yeol Oh

Hyo Soo Jeong

Young Rae Cho

Je Do Mun

Moon Jae Do

A flat panel display apparatus having high aspect ratio spacers and a method for the apparatus are disclosed. The apparatus has an emitter panel having a lower substrate, cathode electrodes and gate electrodes; a display panel having an upper substrate, transparent anode electrodes and fluorescent materials; a plurality of spacers having supporting walls having high aspect ratio and supporting legs respectively protruded from the supporting walls; and a sealing member for vacuum sealing peripheral regions of the emitter panel and the display panel. Therefore, the spacers are easy to be separately fixed in the display panel due to the supporting legs and vacuumizing of a space between the emitter panel and the display panel can be easily accomplished because the supporting walls and the supporting legs respectively have different heights.

Flat panel display apparatus having high aspect ratio spacers and method for manufacturing the same

Evacuation of the volume of a field emission display can be carried out more easily by attaching the auxiliary chamber of various shape to the main space of a field emission display, which enlarge the volume of the field emission display. Several types of auxiliary chambers are attached to the main space of a field emission display and the resultant structures are described. The main purpose of the present invention is to introduce the method of providing the space for placing getters and increasing the conductance of the system to evacuate by enlarging the total volume of the field emission display.

Field emmission display with an auxiliary chamber

The invention is to provide the method for fabricating the spacers which are mechanically strong and have lower outgassing rate. Spacers in this invention are made of photosensitive glass. A net shaped photosensitive glass is etched by a first photolithography process and then the side wall of it is etched again by a second photolithography process for improving the efficiency of evacuation of the internal cavity of an FED.

Spacers for field emission display and their fabrication method

This invention describes the new structure of a field emission cathode based flat panel display that comprises a main space and an attached auxiliary space, whose volume is larger than that of the main space. In this structure evacuation of the volume of the FED can be carried out more easily. Also getters to eliminate a build up of pressure after sealing off process can be included in the auxiliary tank and high vacuum can be maintained for the lifetime of the FED.

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Kyonggi-Do, South Korea

Jae Yeol Oh