O LED , which is an Organic Light-Emitting Diode, is also called Organic Electroluminescence Display (OELD). OLED is considered to be the next generation of the most promising new flat display technology due to its softness, transparency, clear picture quality, energy saving and environmental protection. Therefore, since 2003, this display device has been widely used in MP3 players. For DCs and mobile phones that are also digital products, the engineering samples using OLED screens have only been shown at some exhibitions, and they have not yet entered the stage of practical application. But OLED screens have many advantages that LCDs can't match.
Unlike traditional LCD displays, OLED display technology eliminates the need for backlights and uses very thin organic coatings and glass substrates that illuminate when current is passed through. O LED and the display screen can be made lighter and thinner, larger viewing angle, and can significantly save power.
Currently the second largest OLED technology system, the low molecular O LED technology for the Japanese master, and polymer PLEDLG OEL is this so-called mobile phone system, technology and patents by UK technology companies CDT to grasp, comparing the two P LED There are still difficulties in coloring the product . Low-molecular-weight OLEDs are easier to colorize. Recently, Samsung released 65,530-color mobile phone OLEDs.
However, although OLEDs with better technology will replace LCDs such as TFTs in the future, organic light-emitting display technologies have shortcomings such as short lifetime and large screen size. The OLED is constructed such that each OLED unit can be imagewise compared to a hamburger, the luminescent material is the vegetables sandwiched in the middle, and the display unit of each OLED can controlly generate three different colors of light. Like LCDs, OLEDs are also active and passive. In the passive mode, the cell selected by the row and column address is illuminated; in the active mode, there is a thin film transistor (TFT) behind the OLED unit, and the light emitting unit is lit under the TFT driving. In the current situation, passive OLEDs are more energy efficient, but active OLEDs display better performance.
Portable Ultrasonic Flowmeter uses the principle of low voltage, multi-pulse time difference, the use of high-precision and ultra-stable double balance signal differential transmission, differential reception digital detection technology, when the ultrasonic beam propagates in the liquid, the flow of the liquid will make a small change in the propagation time, the change in the propagation time is proportional to the flow rate of the liquid.
At zero flow, the time required for the two sensors to transmit and receive sound waves is exactly the same (the only technology that can actually measure zero flow), and when the liquid flows, the transmission time of sound waves in the countercurrent direction is greater than that in the forward direction.
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Kaifeng Chuangxin Measurement & Control Instrument Co., Ltd. , https://www.kfcxflowmeter.com