[CEATEC] Tian Tian optical and TOYOTA developed a glass package 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 configuration elements, high density; (3) to support the high current, can realize high brightness. Project supply in 2008.

Figure 1: the structure of a glass encapsulated white LED. Floor, packaging materials are inorganic materials Figure 2: display for FPD glass plate inspection line camera light source sample making method is 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 heating, the softening, pressure molding (Figure 1). The key point is to heat and soften the low melting point glass without destroying the temperature of the components. 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 die, 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, also carried out for the purpose of the product sample display (Figure 2). Due to the heat resistance of the product can be improved, so as to be able to configure a variety of components; can flow through the current near 100mA, 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: Nikkei BP