Getter composition and device for introducing of mercury into fluorescence lamp for BLU

Abstract

The invention relates to a getter combination which is used on back light units as LCD TV and monitor and used for leading mercury in an external electrode fluorescent lamp or a cold cathode adding Ti to the getter combination made from Ti-Hg Zr-Al to raise the adsorption efficiency of getter and prevent getter from being oxidized owing to the inoxidability of Ti; adding Ta to raise the release effect of mercury and to reduce the activation temperature by 100 DEG C; the activation can also be carried out from 550 to 650 DEG C; therefore, the getter combination can be prepared by making use ofcommon stoves or gas flames used in the lamp manufacturing procures without expensive high-frequency equipment, and the electrode is damaged to minimum extent. Besides, with adding 0.05 to 5 percent of Fe to the getter combination, the release effect of mercury is raised, the cost of raw material is reduced, and the activation effect is raised with the same function as medium in the getter activation process.

Description

technical field [0001] The present invention relates to a getter composition for introducing mercury into an EEFL (External Electrode Fluorescent Lamp) or a CCFL (Cold Cathode Fluorescent Lamp) used as a BLU (Back Light Unit) for LCD TVs and displays, etc. device. Background technique [0002] Usually, the getter is manufactured and used by mixing various metal components according to the composition of the residual gas to be removed and the use conditions, so that it has the property of chemically absorbing the gas to be removed. [0003] The getter composition can be manufactured in a mixture of various metal forms, and can also be formed in a structure or compound state of various forms, but the ultimate goal is to retain mercury stably and be easily activated in the lamp according to specific temperature conditions , so that it is easy to release mercury, and it is easy to absorb the doping gas in the lamp. In addition, once the luminaire is completed, it is easy to re...

AI Technical Summary

Problems solved by technology

The shape of the mercury introduction device filled with the original getter composition is cylindrical, spherical or rod-shaped, and there is no groove for releasing mercury, or even if there is a groove for releasing mercury, its width is very narrow, so mercury The release effect is not high

[0014] In addition, after the getter composition is pressed into the metal structure, in the case of a getter that generates slits due to the overlapping of plates, dust is severe during the manufacturing process, and there may also be problems when using the getter composition. The hidden danger of composition crushing

[0015] If it is a getter with a low mercury release effect, the size of the unit getter required when manufacturing a lamp is larger, so the manufacturing cost will be increased, and a certain mercury release rate cannot be maintained when manufacturing a lamp. As a result, there is a problem that the quality of the lamps varies greatly, so a mercury introduction device with a high mercury release effect is required

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