Organic light‐emitting diode (OLED) displays has gradually developed into the dominant mobile display technology. But with the increasing of consumer demand on product, the high quality of display images and Fluency of refresh has become an urgent problem to be solved. The mechanism of crosstalk for OLED display device was studied, and a method to increasing the capacitance is proposed to reduce the crosstalk caused by parasitic capacitance. The method of the article is proposed to enhance its voltage stabilization effect, then to reduce the effect of parasitic capacitance.
As flexible OLED technology continues to mature, new technologies such as folding screens and in‐screen punching have been widely used in many fields such as mobile phones and portable laptops. Overlapping application of new technologies meets the needs of consumers and provides competitive products for the market, but also puts forward higher requirements for product reliability. In this research, the mechanism of dark spot caused by encapsulate failure in perforated area of foldable display screen in reliability test was systematically studied. Under the action of water vapor and electricity, the K element in the polarizer reacts electrochemically to generate KOH, which further generates K2SiO3 chemically with SiO2 of CVD encapsulation layer, resulting in the expansion of CVD film and encapsulation failure. Water vapor denatures the organic luminescent materials, dark spots appear.
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