Backlighting applications have improved LED supply and demand gap

The imbalance between the supply and demand of light emitting diodes (LEDs) is improving quarter by quarter. According to the latest research from the market adjustment agency NPD DisplaySearch, the price of low-cost direct type LED backlights and cold cathode fluorescent tube (CCFL) backlights is already almost the same, which is expected to drive up the demand for LEDs in backlight applications; at the same time, The penetration rate of LEDs in the lighting application market has also continued to expand, all of which help alleviate the oversupply problem of LEDs.

Overall, the proportion of LED supply exceeding (Glut) has dropped significantly from 30% in the fourth quarter of last year to 19% in the first quarter of this year, and is expected to further reduce to 16% in the second quarter.

Indoor Antenna

Homemade library ground wave TV double ring indoor antenna: The received ground decimeter wave frequencies are currently in the 500-800 MHZ frequency range. If there is a good field strength in the urban area, low frequency and high frequency should be taken into account. This is the best resonance; The frequency center is around 700MHz, which is converted according to the radio propagation speed and frequency. If the center frequency wavelength is about 42cm, then the diameter of the ring antenna should be 13cm, that is, the diameter should be a quarter of the center frequency wavelength of about 42cm. If we think of a 42cm conductor as a ring with a central frequency and wavelength of 42cm, then its diameter should be close to 13cm. If we make a good antenna, we can get twice the result of receiving ground waves with half the effort!

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