Types of television (2024)

Name: Mianhong
Brand: Mianhong
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Hello, here is a tutorial from Guangzhou Mianhong TV factory. I’m Jasmine, the manager of the sales department. In this article, we will introduce the types of television so that consumers or wholesalers can understand what common machines are on the market.

CRT TV

CRT TV stands for Cathode Ray Tube Television. This type of television is a very old product that was active decades ago. Its imaging principle is to use an Electron Gun to Shoot a beam of electrons at a screen coated with phosphors. When the speed of the electron gun is relatively fast, using the visual residual effect of the human eye, the human brain will supplement the picture.

CRT TVs have been eliminated from the market. Compared with LCD TVs, which currently dominate the market, it has the following shortcomings:

Bulky machine. Because of the design problem of the electronic gun, the CRT TV had to be very thick. Thicker thickness requires more shells to provide support, which also results in greater weight.
Limited screen size. Again, due to the design problem of the electronic gun, humans can not create a large CRT TV for commercial purposes. If yes, the cost per production of a CRT TV is more expensive than a regular LCD TV now.

The only advantage that allows a CRT TV to beat a regular LCD TV is through Anti-aliasing. LCD TVs display images through pixels, but CRT TVs do not have a clear concept of pixels. The edges of the image are formed by the continuous process of electron beam scanning. Therefore, when a digital image is displayed, due to the discrete nature of pixels, the edges of the image will appear jagged. The image edges of CRT TVs are relatively smooth. If an LCD TV wants to be infinitely close to the anti-aliasing effect, then we can only increase the density of pixels. If the pixels are dense enough, the edges of the image can be smooth enough that no jagged edges are visible to the human eye. So now there are 4k and 8k resolution LCD TVs.

If you are curious about why CRT looks better on gaming, check this out!

Plasma TV

Plasma TVs screen consists of millions of tiny cells filled with a noble gas. Electrodes go through the machine and create many electric fields. Each electric field will activate the gas atoms, causing them to emit light. Eventually, the white light emitted from the gas will pass the color filters to create real color seen by human eyes.

Plasma TVs was replaced by LCD/LED TVs as well, due to these shortcomings:

High energy consumption. Emitting light by exciting the gas means that its light-emitting efficiency will be very low. Compared with other display technologies, the luminous efficiency of plasma TVs is relatively low, which means that to produce the same brightness, plasma TVs need to consume more power.
Static images are prone to screen burn: Plasma TVs have some phosphorescent substances. Phosphorescent substances have a limited lifetime. If a static image is displayed for a long time, the pixels need to continue to emit light, causing the life of the phosphorescent material to be drastically reduced. When the phosphorescent material of some cells attenuates to a certain extent, compared with other normal pixels, the human eye will feel screen burn.

LCD and LED TV

LCD TV has dominated the market. It perfectly solves the shortcomings of CRT TV and plasma TV, that is, an LCD TV can be made very thin and consume low power.

The structure of LCD TV is relatively simple. The sandwich structure of the LCD screen itself does not emit light, but its function is to polarize light and twist the liquid crystal to control the light passing through the red, green, and blue color filters. It uses backlight technology, that is, the light strip on the back neatly emits light through the optical film and finally reaches the color filters.

NOTES: Many people confuse the concepts of LCD and LED. LCD actually refers to a TV screen that uses a liquid crystal screen. LED TV usually refers to a TV that uses LED as the light source.

Direct LED(DLED) TV

DLED technology evenly distributes LED light behind the LCD panel, directly illuminating the entire screen. DLED are flexible to manage the brightness because the factory can replace higher power-consumption LED lights and increase the number of LED light bulbs/strips.

For example, high-brightness televisions (also called commercial displays) used outdoors to protect against the sun use a high-density and high-energy-consuming LED backlight configuration.

Edge LED(ELED) TV

ELED technology installs the backlight(strips+bulbs) at the edges of the screen, and the light is evenly distributed to the entire screen through the optical light guide plate.

Compared to Direct LED, ELED is suitable for some small-sized TVs, such as those below 32 inches. If ELED technology is imposed on a large-sized TV, such as a 75-inch TV, the long-term burning of LED light will burn a shadow on the optical film.

MiniLED TV

MiniLED technology is a popular technology in recent years. Literally, it replaces the backlight with a mini lamp. Smaller and denser lamps can usually increase the brightness a lot. In addition, another core of miniLED is to give the TV a local dimming function. The local dimming function can greatly improve the absolute contrast of a TV. This local dimming is coordinated by the mini backlight, TCON board, and motherboard. A TV using miniLED technology is usually much more expensive than an ordinary LED TV.

Local dimming: MiniLED divides a group of light bulbs into a zone. For example, a 65-inch TV has 2048 backlights, 4 in a group, so it has 512 local dimming zones. Theoretically, more local dimming zones can make the overall image contrast higher, but it also tests the ability of the motherboard and TCON to operate so many local dimming zones at the same time.

QLED TV

Unlike DLED, ELED, and miniLED technologies that emphasize brightness, QLED emphasizes color improvement. What’s more interesting is that QLED can be used with miniLED to become a high-brightness and colorful TV.

There are two technical routes for QLED TV solutions:

Photoluminescence: Photoluminescence is achieved by modifying the optical configuration, usually using a film with fluorescent quantum powder, or a more expensive composite quantum film. When the white backlight passes through this special quantum film, the quantum film absorbs and re-excites light with a better spectrum, which will have better color performance after passing through the color filters.
Electroluminescence is a simpler way. It only requires replacing the ordinary White LED backlight with a quantum lamp with quantum phosphor powder. This quantum lamp can emit better-looking colors by itself, thus achieving the purpose of QLED TV.

OLED TV

OLED TV is a self-luminous TV. It is not an LCD TV because it does not need an LCD panel. It also does not need a backlight because each pixel can emit light by itself. From these two concepts, OLED TVs have two advantages that LCD TVs cannot match.

Thin Display: OLED TVs do not need a backlight or a sandwich-structured LCD screen. Its structure only has a substrate, an anode, an organic light-emitting layer, and a cathode. From the side alone, an OLED TV screen can be as thin as a few millimeters, while LCD TVs require several centimeters of space to reserve the installation of backlights and optical configurations.
Ultra-high brightness and near-infinite contrast ratio: Due to the pixel-level self-luminous structure of OLED, it can achieve very high brightness. For example, a 4k OLED TV has a resolution of 3840*2160, so it has 8294400 self-luminous pixels, which can be compared to 8294400 light bulbs. In addition, each pixel can be controlled individually, so it will also have 8294400 local dimming zones. Therefore, in terms of brightness and contrast, OLED TV has a huge advantage.

Of course, OLED also has its disadvantages. O stands for organic, which means its lifespan is shorter than that of organic LCD TVs. Organic light-emitting materials, especially blue materials, will oxidize and age after long-term operation, resulting in brightness decay and a reddish color, which we call screen burn-in.

Micro LED TV - The Future

Micro-LED is a technology still under development. Maybe the first cheap micro-LED TV will be sold in 2030.

Micro-LED is a technology that is still under development. Maybe the first cheap micro-LED TV will be sold in 2030. In general, micro-LED combines the advantages of mini-LED and OLED.

Pixel-level self-illumination: Micro-LED TV can achieve the same self-luminous effect as OLED TV. Therefore, it does not need any backlight or LCD panel and can be very thin.In additional, the response time of a Micro LED TV will be fast.
Longer life: The disadvantage of OLED is the lifespan of organic materials. Microled TV can make up for this shortcoming well because it does not use organic materials.

At present, the production cost of micro-LED TV is high, mass production is difficult, and the products are few. It is mainly reflected in the concept of “Mass transfer”. Mass transfer is to move a large number of micron-level LED chips correctly and efficiently to the target substrate and PCB board through high-precision equipment. There are many ways to perform mass transfer, one of which is vapor deposition, which involves vapor deposition of micron-sized color filters onto a PCB.

Conclusion:

Through this article, I think you have a better understanding of types of television. For past technologies (CRT and plasma TV), we have learned why they were eliminated. For current technologies (DLED, ELED, MiniLED, QLED, OLED), we can also clearly distinguish each technology so that there is no confusion. DLED, ELED, MiniLED are types of television that modify brightness. QLED modifies color performance. OLED is an alternative technology that combines brightness and color performance. Micro-led TVs exist in the future, and I believe that Mianhong, as a TV factory, will also assemble the first micro-led TV in the future.

If you need a 17-inch to 98-inch LCD TV, please contact us. We are looking for some Mianhong’s brand distributors. At the same time, we are also looking for TV OEM cooperation, that is, we help you produce TVs with your brands.

FAQ

How do you ensure the stability of these tempered glass TVs?

Please contact us, we can provide you a video to see the strength of our new tempered glass TV.

Are you the TV manufacturer(factory)?

Yes, we are. We are an LED TV OEM factory with 20 years of experience. Welcome to share your ideas with us. It’s our pleasure to provide the best TV solution for you.

What is your MOQ requirement?

Our MOQ is one model per 20GP and two models mixed loading in one 40HQ. Sometimes our MOQ is flexible, half of a 20-GP container is acceptable.

Is it possible to buy a sample?

Yes, it is. A sample is available to buy. However, our sample may charge double the normal price, which includes the following two parts:

Customization and testing fees – The additional fees cover the engineering costs for us to customize and test the product according to your requirements.
Sample deposit – An extra unit price is collected as a deposit. Once you place a formal bulk order after the sample order, we will deduct this deposit amount from the total fees of your bulk order.

This charging method ensures that we can customize and test the product specially for your needs, and also guarantees that once you formally place the bulk order, we can start production immediately without impacting delivery time.

How long is the delivery time & Warranty?

Mass order: 30 days after the deposit arrival and artwork confirmation. Non-customized Sample: three days. Customized Sample: 7-10 days. Warranty: 1-year by default. Extra cost for extension.

We are looking for long term customers and we will offer the best price!

Types of television (2024)

CRT TV

Plasma TV