Pseudo-screens eliminated in the era of CRT equipment
Looking back, CRT TVs are not really big screen devices. For technical reasons, if the CRT device is upgraded to 32 inches, its volume is already very large and it has occupied too much space at home. And now the LCD TV entry size is 32 inches.
In fact, the common CRT devices are basically maintained at about 20 inches. The imaging principle of CRT TVs is to rely on electrons to bombard phosphors on the picture tube to produce images. Therefore, space is needed to configure large electronic devices. Large volume and high energy consumption can be said to be the biggest drawback of this kind of equipment. However, the CRT display device has the advantages of large viewing angle, no dead pixels, high color reproduction, uniform chroma, and extremely short response time.
Although there are advantages, however, after the new millennium, thin and light display technologies began to appear, and the prices of liquid crystal, plasma, and other display devices gradually declined, and CRT equipment began to decline. Even if Sony-like Trident technology has a good display, these improvements still do not solve the bulky problems of CRT devices. Now we have hardly seen the CRT display device.
The disadvantages of advanced plasma technology are also obvious
The relationship between plasma technology and CRT display technology is even greater. Its light emission principle is that plasma uses gas discharge, and a large number of plasma tubes arranged together are used as light emitting elements to constitute a screen. Each cell corresponding to each plasma is filled with **, ** gas. After the high pressure is applied between the plasma tube electrodes, the gas enclosed in the plasma tube chamber between the two glass layers generates ultraviolet light, thereby exciting the red, green and blue primary colors on the flat panel display to emit visible light.
Plasma has many advantages. As a self-luminous display technology, there is no problem of viewing angle of view. The wide viewing angle is totally natural. This point of liquid crystal has not been realized until now. And the plasma display color and screen smear control all have better performance. In those years of competition with liquid crystal, plasma has always been regarded as a higher-end large-screen display device, but unfortunately it was eventually eliminated by LCD.
Some people think that liquid crystal elimination of plasma is "bad money drives out good money." In reality, this argument is not true. Plasma screens cannot display small screens due to technical reasons. Their smallest products are all around 30 inches. In the age of mobile devices today, plasma display technology cannot adapt.
Plasma display devices have also been unable to be light and thin and cannot be used in products such as mobile phones or tablets. Imagine that if plasma only guards one TV market, and other markets have LCD, OLED and other technologies, their scale can not compete with LCD, and eventually they will be eliminated due to high costs. Not to mention that until the plasma exited the market, the problem of burning screens was not completely solved.
LCD TV is currently the king of the big screen display
The elimination of plasma liquid crystal display technology is now "dominant" display technology. When the liquid crystal is energized, the molecular arrangement becomes orderly, so that the light can easily pass through; when the liquid crystal is not energized, the molecular arrangement is disordered and the light is prevented from passing through. Let the liquid crystal molecules block or allow light to penetrate. This is the basic principle of liquid crystal imaging.
Many consumers now have 4K resolution LCD TVs at home. In order to stimulate sales, manufacturers also added new technologies to LCD TVs to improve picture quality and color. The first is quantum dot technology. Quantum dots consist of **, **, **, and ** atoms and are nanometer materials with a crystal diameter between 2 and 10 nanometers. Because of its unique optoelectronic characteristics, after being stimulated by photoelectricity, very pure high-quality monochromatic light of various colors will be emitted according to the diameter of the quantum dots. Based on this feature, if the quantum dot material is used on the backlight of a television, the full spectrum of light can be emitted by irradiating the blue LED, so that the backlight can be fine-tuned, and the performance of the color gamut can be greatly improved to make the color more vivid.
HDR technology is also one of the routes to upgrade. HDR is an abbreviation of HighDynamicRange, translated into Chinese is a high dynamic range. HDR technology is to make bright areas of the image brighter, and black areas are darker. Many LCD TVs support the HDR function.
However, these improvements are still tinkering and cannot change the nature of LCD TVs. Therefore, although the market has been clamoring about curved TVs, Quantum-dot TVs, and HDR TVs, they are actually all in the category of LCD TVs.
Laser TV Real Large Screen Solution
So can we only watch LCD TVs for a decade? the answer is negative. Because now there is a laser television on the market. This new category is likely to change the living room of many families. Laser TV can project more than 100 inches of screen, support 4K resolution, and color performance is no problem, and laser television can also carry intelligent systems. This makes LCD TVs very stressful.
The laser television is composed of a reflective ultra-short focal projector with a laser light source and a 100-inch or more light-resistant screen (some brands support the selection of self-owned brand light curtains). The projection host is usually equipped with a smart operating system, which can achieve applications such as online viewing of large screens and games such as smart TVs. We believe that laser television is a solution-based product that incorporates projection technology, light-resistant screens, sound systems, and intelligent systems. It cannot be simply equated with the projector.
There are many brands that currently offer laser televisions. There are traditional home appliance brands such as Hisense and Changhong. There are also startups such as rye and nuts. In addition, many projector brands have also launched laser televisions such as BenQ, Optoma, ViewSonic and so on. It can be said that the products that consumers can choose are already abundant enough.
However, the laser television industry is still in its infancy, and many consumers are still not aware of it. However, some people think that laser television will eliminate LCD TVs and become the new dominant player in Chinese families. This view of the current view of some avant-garde, but shows that product upgrades are always very cruel, if the price of laser television continues to decline, in the field of large-screen laser television and LCD TV can indeed fight.
After nearly 30 years of upgrading, home-use large-screen display devices have undergone many changes. From the bulky CRT equipment to the thin and light LCD devices to the large-screen laser TV products, it can be said that the needs of consumers have been upgrading. The demands of future consumers will continue to escalate, and current LCD TV upgrades have bottlenecks, which are giving laser television opportunities. Of course, if you can grasp the opportunity, you have to look at the quality of laser television itself.
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