FPD with a quantum dot and a wide color range

■ Do you like beautiful displays?

■ Three points in this article

Quantum dot (QD) is a semiconductor that changes the wavelength of light by changing the size of the particle size.The color spectrum is narrow and the peak value of the wavelength is sharp, and it is difficult to fade even if it is exposed to the light for exciting, so it increases the color expression of the display, and high -definition, such as 4K or 8K.International standard BT on TV.It is attracting attention as a member that realizes the wide color gamut that is determined by 2020.

■ Used along with the blue light source of LED and organic EL

The pioneer in the TV with QD would be Samsung's "QLED" TV.Although it is a product as if it had opposed the organic EL (OLED) TV, the QLED is an LCD display, which increases the color reproducibility by putting a QD sheet on the LED backlight.

In addition, the company has developed a "QD-OLED" display that uses QD in OLED.The QD seems to be used in the same way as the color filter (CF), exciting the green and red of the QD with the blue light -emitting organic EL light source, and the QDCF RGB (red, green, blue) is red in QD.It is said that the green color is used to emit blue light with organic EL.

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