TDK developed a RGB sensor to adjust the color of the LED backlight

TDK developed for the adjustment of the LCD panel LED back illuminated RGB sensor light tone, and in October 4th the opening of the "CEATEC JAPAN 2005" was demonstrated. The company plans to integrate into a single chip in 2005, in 2006 began mass production.

The company had already put into operation for the LCD panel LED backlight power saving purposes, to respond to visible light amorphous silicon optical sensors, has been adopted by a number of mobile phone manufacturers.

Used glass plate to reduce the cost

In addition to TDK, Hamamatsu Photonics (Hamamatsu Photonics) and other companies are also being developed for the RGB sensor LED back light. The sensor developed by TDK is characterized by the fact that it is not on the silicon substrate but in the upper layer of the lower glass substrate. Therefore, the cost of single chip integrated product production estimates can be controlled in a few dozen yen.

TDK are developed into the filter of R (red), G (green), B (blue) light sensor module has the sensitivity of the plan "in 2005 in the three module integrated into a chip, and supply the samples" TDK hall commentator said. Three kinds of sensor module the display output in the irradiation of 100 lux respectively is 0.34 A (red), 0.056 A (green), 0.021 A (blue) current dimensions were long 1.5mm width 2mm * * thickness 0.6mm.

In the realization of single chip integration, if the sensor module to reduce the color, the signal output will be reduced accordingly, there must be an amplifier circuit. In this regard, the plan has been introduced by the use of visible light sensor, thin film transistor (TFT) amplifier circuit.