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40" OLED panel for ultra-thin displays and TVs

12.06.2005

At the Society of Information Display 2005 International Symposium, Seminar and Exhibition, which opens next week in Boston, Samsung is due to present its new development - a prototype of a very thin 40-inch OLED (Organic Light Emitting Diode) panel. . Its thickness is 2,2 cm, so, according to Samsung, we should expect TVs no more than 3 cm thick after a while.

Recall that OLED displays are good, first of all, in that their power consumption is lower than that of traditional LCD displays due to the fact that they do not require backlighting. In addition, the image resolution on OLED displays is higher than on LCD displays. However, until recently it was not possible to make OLED displays large enough at reasonable prices, so for now they are being built into cell phones and other devices with small screens. But work on the creation of large OLED displays is quite active.

For example, the same company Samsung showed two prototypes last year: first with a diagonal size of 14,1 inches with a resolution of 1280 x 768 pixels, and then a 21-inch panel with a resolution of 1920 x 1080 pixels. True, the new 40-inch panel has a lower resolution - 1280 x 800 pixels. Among other characteristics, we note the brightness of 600 cd/m2 and the contrast ratio of 5000:1.

This prototype was made from a 730mm x 920mm glass blank using amorphous silicon and traditional LCD technology. That is, an important step has been taken in reducing the cost of producing OLED displays (previously, more complex and expensive technologies were used for this).

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Visual stimuli amplify sound 20.02.2018

A new study has shown that visual stimuli (such as tracking a person's lips while talking) help the brain perceive sounds, amplifying them.

Researchers at University College London (UCL) have found that visual information is related to auditory information on a more fundamental level than previously thought, independent of any conscious or attentional processes. When both of these types of information are perceived simultaneously, according to a press release on the NeuroscienceNews website, the auditory cortex - the region of the brain responsible for interpreting what is heard - can amplify sounds that somehow correlate with what the person is looking at.

As lead author Dr Jennifer Bizley notes, although the auditory cortex is focused on processing sounds, almost a quarter of its neurons respond to light - this discovery was made ten years ago and until now scientists have tried to understand the reason for this structure of this brain. areas.

In a 2015 study, Beasley and colleagues found that it's easier for people to distinguish between two sounds if they try to focus on what happens to the visual stimulus over time. In the new work, the experts presented the subjects with the same auditory and visual stimuli, while monitoring neural activity. It turned out that when one of the sound streams changed amplitude in parallel with changes in the visual stimulus, more neurons in the auditory cortex responded to this sound.

“Looking at another person does not just make us hear better because we can recognize lip movements,” Beasley notes. “Our research has shown that this has an advantage at a lower, basic level, as the timing of movements and sounds tells auditory cortex, to which of the sounds to respond with greater force.

According to the researchers, the results of the work can be useful in the development of special techniques for people with hearing impairment. In addition, it is expected that the study may also help developers of hearing or cochlear aids.

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