Drinking Water Safety Makes Home Water Purifier Usher in Development Opportunities

Drinking Water Safety Makes Home Water Purifier Usher in Development Opportunities With the deterioration of the water environment, the water pollution response plan has gradually become an urgent need in China. According to news reports, in January of this year, Changzhi’s aniline leak accident was exposed, causing flooding in Hebei Province. Since then, some water bodies in Handan City and Anyang, Henan Province have detected excessive aniline. Also in January, a tank truck was illegally loaded, causing some chemicals to escape into the river and affecting the lives of 30,000 residents in Jinshan and Songjiang. From the beginning of March this year, at least 1,200 dead pigs have been salvaged in the Songjiang section of the Huangpu River. As the dead pigs entered the Huangpu River secondary water protection zone in Songjiang, public concern for the safety of water sources has arisen.

According to a survey conducted by the World Health Organization, the safety of drinking water is crucial to human health, and 80% of human diseases are related to the insecurity of drinking water. According to experts on water quality safety at the China Center for Disease Control and Prevention, water pollutants can be broadly classified into three categories: biological pollution, inorganic pollution, and organic pollution. “Now the biggest hidden danger of drinking water safety comes from organic pollution.” A water quality researcher mentioned that “organic pollution sources are very widespread. Industrial pollution emissions, agricultural pollution such as fertilizers and pesticides, and people’s daily lives may cause organic pollution to water bodies. There is a huge potential for these organic pollutants."

According to industry sources, the water treatment process is lagging behind. The new national water standard that was originally scheduled to be implemented in July 2012 has been postponed to 2015 due to various reasons. Even so, it can only be realized in provincial capital cities. As a widely used, water dispensers and bottled water that have been recognized by the public have been repeatedly exposed to issues such as black heart barrels, plasticizers, and bacteria exceeding the standards in recent years. Drinking water safety has become a social concern.

Home water purifier usher in development opportunities Many countries in the world have experienced such a stage. Along with the rapid development of industrialization and the rapid expansion of urbanization, water pollution, water shortage, and water problems have come one after another. They are constantly proposed for urban water treatment systems. challenge.

“The WHO/UNICEF 2010 Joint Monitoring Report shows that 884 million people worldwide lack access to safe drinking water. 88% of the world’s diarrhoea is related to unsafe drinking water, lack of hygiene, or poor sanitary conditions, even in the United States. , 35% of municipal wells, 8% of private residential wells, 23% of small public groundwater supply found in the intestinal virus.” David Hattaja, executive director of the American Water Quality Association (WQA) in his 2013 water products legislation Will be displayed in the report. "Although the demand for high-quality water is urgent, the practical operation is limited to capital, technology, and other factors. It is sometimes difficult to satisfy the municipal water treatment system alone. Therefore, household water treatment is particularly important as the final barrier to water treatment."

Domestic water purification products are the last barriers to water treatment systems and are the only part that residents can choose. Since the rise of domestic water purifiers in the domestic market, the domestic water purifier industry has been in a period of rapid development. In recent years, the improvement of domestic consumption levels and the increase in residents’ awareness of consumption have also given the household water purifier industry more opportunities for development.

TFT LCD Module

How does TFT work?
TFT is the abbreviation of "Thin Film Transistor", generally refers to thin film liquid crystal displays, but actually refers to thin film transistors (matrix)-can "actively" control each independent pixel on the screen, which is The origin of the so-called active matrix TFT (active matrix TFT). So how exactly is the image produced? The basic principle is very simple: the Display Screen is composed of many pixels that can emit light of any color, and the purpose can be achieved by controlling each pixel to display the corresponding color. In TFT LCD, backlight technology is generally used. In order to accurately control the color and brightness of each pixel, it is necessary to install a shutter-like switch after each pixel. When the "blinds" are opened, light can pass through, and " When the shutters are closed, light cannot pass through. Of course, technically, it is not as simple as the one just mentioned. LCD (Liquid Crystal Display) utilizes the characteristics of liquid crystals (liquid when heated, and crystallized into solid when cooled). Generally, liquid crystals have three forms:
Smectic liquid crystal similar to clay
Nematic liquid crystal resembling a fine matchstick
Cholestic liquid crystal
The liquid crystal display uses filaments, and when the external environment changes, its molecular structure will also change, and thus have different physical properties-it can achieve the purpose of letting light through or blocking light-which is just like the blinds just now.
Everyone knows the three primary colors, so each pixel on the display screen needs three similar basic components described above to control the three colors of red, green, and blue respectively.
The most commonly used one is twisted nematic TFT LCD (Twisted Nematic TFT LCD). Existing technologies vary greatly, and we will cover them in detail in the second part of this article.
There are grooves on the upper and lower layers. The grooves on the upper layer are arranged longitudinally and the grooves on the lower layer are arranged horizontally. When no voltage is applied to the liquid crystal in its natural state, the light emitted from the light emitting layer of the twisted nematic TFT Display working principle diagram of Figure 2a will be twisted by 90 degrees after passing through the interlayer, so that it can pass through the lower layer smoothly.
When a voltage is applied between the two layers, an electric field is generated. At this time, the liquid crystals are aligned vertically, so the light will not be twisted-the result is that the light cannot pass through the lower layer.

(2) TFT pixel structure: The color filter is divided into red, green, and blue according to the color, which are arranged on the glass substrate to form a group (dot pitch) corresponding to a pixel. Each monochromatic filter is called It is a sub-pixel. In other words, if a TFT display supports a maximum resolution of 1280×1024, then at least 1280×3×1024 sub-pixels and transistors are required. For a 15-inch TFT display (1024×768), then a pixel is about 0.0188 inches (equivalent to 0.30mm), for an 18.1-inch TFT display (1280×1024), it is 0.011 inches (equivalent to 0.28mm) .
As we all know, pixels are decisive for the display. The smaller each pixel is, the larger the maximum resolution that the display can achieve. However, due to the limitation of the physical characteristics of the transistor, the size of each pixel of the TFT at this stage is basically 0.0117 inches (0.297mm), so for a 15-inch display, the maximum resolution is only 1280×1024.

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ESEN Optoelectronics Technology Co., Ltd, , https://www.esenlcd.com