In recent years, small pitch has become a hot spot in the development of LED display industry in China. With the advantages of seamless splicing, high contrast, wide color gamut display, energy saving, etc., small spacing is crowding out traditional indoor splicing such as LCD liquid crystal and DLP rear projection. Big screen market share.
The small distance leading the trend requires the active cooperation of the “ behind-the-scenes †supporting manufacturers, but also brings a series of challenges. Among them, for the driver IC , the challenge is manifested in three aspects:
1) For an excellent small-pitch product, low-light and high-ash is the most basic requirement, but it also brings some other problems while achieving low-light and high-ash. This is the discussion of the small pitch at the beginning of the discussion. " Seven big problems " - ghosts, first line dark lines, low gray color cast, low gray uneven, gradual dark lines, high contrast interference, eliminate the cross phenomenon caused by LED open circuit.
2) Due to the multiplication of the density of small-pitch LED lamp beads, the current 24Pin driver IC and the integration of many peripheral components are not high, so the density of components on the module is too high, even if it has not been placed, which is very easy to cause Problems such as poor soldering and reduced reliability of the module.
3) The number of lamp beads per unit area is multiplied, and the power consumption of the small-pitch LED display is significantly increased. How to save energy on the driver IC ?
After driving IC manufacturers and other " behind-the-scenes " supporting manufacturers to make unremitting efforts, today's driver IC has successfully achieved " low-light high-gray high-high brush ( high shooting refresh rate )" , and perfectly solved because of low-light high gray The " seven problems " brought about can effectively meet the needs of small-pitch display.
In order to reduce the complexity of the application PCB board design, the mainstream driver IC suppliers have introduced a highly integrated 48- channel LED constant current driver IC to integrate large-scale peripheral circuits into the wafer of the driver IC . It can reduce the complexity of the application PCB board design, and also avoid the problems caused by the design capabilities or design differences of engineers in various manufacturers.
As a green energy source, energy saving is the eternal pursuit of LED display , and it is also an important criterion to consider the performance of driving IC . The energy saving of the driver IC mainly includes two aspects. One is to effectively reduce the constant current inflection point voltage, and then reduce the traditional 5V power supply to below 3.8V operation ; the second is to reduce the operating voltage and operating current of the driving IC by optimizing the IC algorithm and design .
As an indispensable part of the LED display , in general, the driver IC is directly serving the development of the LED display , but sometimes it can also lead the development of the LED display . For the driver IC manufacturers, strengthening technological innovation and breakthrough is still a compulsory course in the future, so as to maintain the leading and surpassing technology in the process of further development of high-definition, high-quality, integrated and energy-saving LED display .
A new rule from the Drug Enforcement Administration (DEA) threatens to upend the American hemp industry, and could even result in criminal prosecutions for manufacturers of CBD and delta-8 THC products.
The DEA says the [interim final rule," issued Aug. 20, is simply a matter of adjusting its own regulations to account for changes to the Controlled Substances Act that were mandated by the 2018 Farm Bill (or Agricultural Improvement Act) that legalized hemp and CBD production. The new rule [merely conforms DEA`s regulations to the statutory amendments to the CSA that have already taken effect," says the agency. The new rule doesn`t break any ground, according to the DEA.
But many experts on cannabis and hemp law say the DEA rule creates a potential pathway the law enforcement agency could use to prosecute hemp processors and producers of CBD (cannabidiol) and delta-8 THC (or Δ8THC) products. There are two issues: partially processed CBD, and [synthetically derived" delta-8 THC.
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