A new breakthrough in display technology: the industry's first use of plastic folding bottom OLED display

Sony Corp developed its claim to be the industry's first use of full color active matrix organic LED display folding plastic bottom, and recently in the international society for information display conference shows the product prototype.

In the course of the development of the laboratory, SONY engineers first developed a glass substrate on the construction of organic thin film transistor backplane process, and in reality the same structure will be copied to the plastic film. The temperature of the process is less than 180 DEG C. SONY uses C22H14 and five benzene materials to build an active organic transistor of 0.1 cm2/Vs.

The product prototype is a 2.5 inch display, with a 120 x pixel and a 8 pixel gray level, in order to achieve full color effect of 16 million 800 thousand colors. The display resolution is 80 pixels per inch (each pixel size is 318 x 318 micron), each of the sub pixels (red, green or blue) are composed of a double transistor one capacitor PMOS voltage programming circuit to drive the frame rate of 60Hz, 12V, signal voltage.

SONY uses a top emitting structure on the OLED display, which is about to drive the transistor at the bottom, emitting from the top OLED layer. The display comprises an electrode layer, an organic TFT layer, a OLED layer and a cathode layer. It is said that this structure allows engineers to make an electrode layer before making an organic TFT layer without damaging the semiconductor layer.

SONY engineers continue to improve the performance of the flexible display and other specifications, so that this technology can be commercialized as soon as possible. But SONY did not give the official release of commercial products time.

Source: Electronic Engineering album