Display for virtual reality (VR) requires real black, and should be free from flicker and motion blur. This paper shows which device is proper to VR between liquid crystal display (LCD) and organic light emitting diode (OLED). This paper explains why OLED is the best fit for VR.

The electromagnetic field (EMF) is newly considered as an exogenous environmental stimulus that is closely related to ion transportation on the cellular membrane, maintaining the internal ionic homeostasis. Cation transports of Ca and other metal ions, Cd, Zn, and Mnwere studied in terms of the external Ca stress, [Ca], and exposure to the physical EMF. A specific yeast strain K667 was used for controlling CAX5 (cation/H exchanger) expression. Culture samples were exposed to 60 Hz, 0.1 mT sinusoidal or square magnetics waves, and intracellular cations of each sample were measured and analyzed. AtCAX5 transformant yeast grew normally under the metallic stress. However, the growth of the control group was significantly inhibited under the same cation concentration; 60 Hz and 0.1 mT magnetic field enhanced intracellular cation concentrations significantly as exposure time increased both in the AtCAX5 transformed yeast and in the control group. However, the AtCAX5-transformed yeast showed higher concentration of the intracellular cations than the control group under the same exposure EMF. AtCAX5-transformed yeasts displayed an increment in [Ca], [K], [Na], and [Zn] concentration under the presence of both sinusoidal and square-waved EMF stresses compared to the control group, which shows that AtCAX5 expressed in the vacuole play an important role in maintaining the homeostasis of intracellular cations. These findings could be utilized in the cultivation of the crops which were resistant to excessive exogenous ions or in the production of biomass containing a large proportion of ions for nutritional food or in the bioremediation process in metal-polluted environments.

Technology transfer is one of important strategies in sustainable economic growth. There are supply-push and demand-pull directions of technology transfer, and recently Korean research institutes have paid increasing attention to demand-pull technology transfer in an attempt to improve public research institutes’ technology transfer performance (TTP). However, our view is that simply adopting a demand-pull or a supply-push model does not always guarantee improved TTP. We argue that technology marketing strategies, such as mass marketing and target marketing, should also be considered. This study aims to investigate the relationship between technology transfer directions and TTP, and the role of technology marketing strategies. We collected a Korean research institute’s technology transfer data from 2014 to 2015, and then employed a two-way ANOVA to analyze the data. The result of the analysis shows that TTPs differ by technology transfer directions and technology marketing strategies. More importantly, we found that the demand-pull model yields higher TTP, especially when the model is associated with target marketing strategies rather than mass-marketing strategies. This result implies that marketing strategies, such as market segmentation and customer targeting, are needed if an organization wants to improve TTP by implementing the demand-pull technology transfer model.

An external noise coupled into the power net of mobile driver IC can reveal as flicker or weak horizontal fluctuation in the display. This is a kind of conducted EMS study in electronics. Though conducted EMS for IC has been studied for several decades, conducted EMS dedicated to mobile display has been rarely researched. In the present paper, we find such noise causing abnormal display using noise injection system composed of CDN, power amplifier, and signal generator. Furthermore, we evaluate the noise at the IC input by simulation for identifying its effectiveness on the operation of driver IC. Based on this evaluation result, IC makers can simulate the abnormal analog output which may be visible in mobile display.

A 1.2-Gbps GDDR3 physical layer (PHY) circuit for flat panel displays is presented. To reduce the channel skew and to make the clock robust against power supply noise, an automatic skewcalibration algorithm and a coarse lock detector with hysteresis are proposed. The GDDR3 PHY has been integrated in a timing controller chip fabricated in standard 0.13-µm CMOS process.