The world's first glass packaging white LED

Tian Tian optical glass and TOYOTA synthesis developed a white LED glass packaging, and on the "CEATEC JAPAN 2008" on display. Compared with the existing LED resin package, its characteristics are: (1) can inhibit package deterioration and improve life; (2) heat resistance can be improved, so as to realize intensive allocation of components, high density; (3) to support the high current, can realize high brightness.

Its planned 2008 sample supply. Production methods are as follows: white LED components to install TOYOTA manufacturing of the ceramic board on the synthesis (in blue LED, equipped with phosphor) arranged in the mold, which is placed on the low melting point glass and is heated and softened, the molding pressure. The key point is to heat and soften the low melting point glass without destroying the component temperature. The composition of the low melting point glass is not disclosed, only the use of the company's optical glass technology. By changing the shape of the mould, the utility model can be made into various shapes for various purposes. Prior to the use of epoxy resin and silicone resin packaging LED, need to work under the temperature of +80 degrees celsius. The development of the glass packaging LED can be used to raise the temperature to +200 C. For example, the amount of current that has previously been used only in 20mA for a certain purpose can now flow up to 150mA. The purpose of the present invention is to use a linear array camera as a FPD (flat panel display) glass substrate for surface inspection.

At the meeting, a sample of the product was also shown (see figure). Due to the heat resistance of the product can be improved, so as to be able to configure a variety of components dense; can flow through nearly 100mA of the current, so as to be able to enhance the brightness to 200 thousand lx. The use of the field, the existing white LED can not meet the brightness requirements, so it has not been used, but the use of optical fiber through the external light guide. In the future will expand beyond the use of linear array camera. In addition, is scheduled to be released recently by TOYOTA technical details.

Source: photoelectric News Network