Although young people are spending less time watching television, it remains a vital household appliance due to its strong family-oriented appeal. Combined with the internet's revitalizing influence on smart TVs, televisions have become more interactive and engaging. Content management has become a significant advantage for internet-connected TVs, yet the viewing experience continues to be the primary factor for consumers when purchasing a TV.
The quality of the viewing experience largely depends on the screen performance of the television. Today's market offers four main types of TV panels. The first is the widely-used LED-backlit TV, followed by QLED TVs with superior color performance, OLED TVs with excellent structural design, and the fourth category, represented by laser TVs, which could be considered "non-screen" TVs. So, which type of TV terminal represents the future of television? Or which TV is better suited for specific scenarios? Let’s explore the features and applications of these four types of TV terminals and determine which one meets your needs the most.
### QLED – The Best Performance Vector for HDR
If you're passionate about HDR movies and find SDR movies lacking, QLED TVs are your best bet. HDR performance is a three-dimensional concept that involves color and brightness, referred to as color volume in the industry. This challenges our conventional understanding of display effects—if you ignore brightness while discussing color, it becomes a flawed proposition.
The human eye is incredibly powerful. During the day, it can perceive a vast amount of color and brightness information. At night, with the pupil dilated, it remains highly sensitive to light. To replicate the world observed by the human eye using a display device, three key elements are necessary: sharpness, high dynamic range (HDR), and color.
For instance, when watching a picture or video of a volcanic eruption on a typical display device, it's impossible to feel the grandeur of the scene. The reason is that while the color of the volcanic eruption might be accurate, without proper brightness, it cannot provide a realistic experience.
QLED TVs employ traditional backlighting methods, increasing LED power consumption and adopting more sophisticated backlight technology, allowing for higher brightness levels. Thanks to this higher brightness, QLED TVs also exhibit significantly improved contrast ratios. Even if we don’t watch TV in a perfectly dark environment, QLED TVs often appear to have higher contrast than OLEDs.
Additionally, QLED TVs demonstrate the strength of their ultra-wide color gamut. Quantum dots possess an intriguing property: by altering the size of a quantum dot, you can influence its emission wavelength, thereby affecting the emitted color. Smaller quantum dots emit blue light, while larger ones produce greenish-yellow, orange, and ultimately red hues. This fascinating feature makes quantum dots a great endorsement for achieving high color gamuts. The same material can cater to different color gamut requirements.
In summary, for those who prioritize "color volume" to support HDR movies, QLED TVs are the most suitable choice.
### OLED – The Coolest Print Display Technology
OLED technology has been making waves over the years, and there’s a strong trend suggesting it might eventually replace LCDs in the future. However, it won't be easy to fully replace LCDs, given how deeply entrenched they are across industries. Nonetheless, OLED holds the potential to surpass LCDs, particularly through printed OLEDs.
Major companies like BOE, TCL, Samsung, and LG are actively developing this emerging display technology. In essence, it falls under the OLED umbrella but is seen as a practical solution to reduce OLED production costs and enable large-scale manufacturing. We know OLEDs are self-luminous, using very thin organic material coatings and glass substrates. Printed OLEDs involve advanced printing equipment, “printing†organic materials onto glass substrates, similar to how newspapers are printed, resulting in higher production efficiency compared to traditional evaporation techniques.
How does “printing†work? Just as when patterns are printed on T-shirts using either inkjet or screen printing, OLED printing also divides into inkjet and screen printing methods. The current mainstream approach focuses on inkjet printing. Inkjet printing devices feature multiple print heads, each equipped with numerous micro-nozzles, accurately depositing red, green, and blue luminescent material solutions into isolation column grooves on ITO glass substrates. Once the solvent evaporates, nano-thin layers are formed, constituting light pixels.
The nozzle is made of a specialized piezoelectric ceramic, allowing precise control of droplet size by adjusting the voltage applied to the ceramic and the duration to regulate the thickness of the luminescent layer. Since this is entirely digital technology, no processing is required. Such a printing method is expected to significantly reduce OLED production costs, extend the lifespan of OLED materials, and improve the yield of large screens.
One of the critical reasons printed OLEDs are highly valued is their close relationship with flexible displays. Imagine printing screens like printing newspapers—can screens be bent as casually as newspapers? It’s quite an exciting thought.
### LED – Micro LED's Bold Challenge
Recent discussions surrounding Micro LED technology have brought it into the spotlight. Rumors suggest that Apple Watch might abandon OLED and adopt Micro LED panels for its new iPhones.
Micro LED technology reduces LEDs to less than 100μm, only about 1% of the size of regular LEDs. Through massive transfer technology, micron-level RBG primary-color Micro LEDs are transferred to a glass substrate to create various sizes of Micro LED panels.
Due to certain technical limitations, such as lifespan issues, OLEDs struggle to completely replace LCD technology. OLEDs must dim white screens or highlights to save power, and their wide color gamut features are not much different from amateur QDs. Micro LED technology truly revolutionizes LCDs.
Micro LED is essentially the miniaturization of LED arrays. Each Micro LED can be seen as a pixel. With smaller modules, it achieves higher brightness, ultra-high resolution, enhanced color saturation, and faster response times. Each pixel can be independently driven, and organic materials exhibit self-luminous characteristics in inorganic materials.
Of course, Micro LED faces numerous technical hurdles that need to be overcome. Combining such tiny LEDs with glass substrates and circuits presents immense technical challenges, making its high cost a barrier to widespread adoption. Continuous iterations of plant technology are needed before Micro LED can officially enter the commercial market.
### Laser Display – The Ultimate Large-Screen Solution
While the aforementioned display technologies deliver excellent image quality, nothing beats the impact of a massive movie-theater-sized screen. Home large-screen solutions include traditional projectors and laser TVs. Traditional projectors require specific spatial distances for optimal setup. To project a larger image, you need more space.
Ultra-short-throw projection breaks this limitation. With a projection ratio of up to 0.6, you can project a 100-inch screen at a distance of just 1.2 meters. Reflective ultra-short-throw projection can achieve the same at a distance of 0.1 to 0.5 meters. This technology’s greatest advantage is saving space, especially when rent is so costly. With a traditional projector, you’d still need to worry about room size to project a 100-inch screen.
Not only is it space-efficient, but most ultra-short-throw projectors now feature reflective designs with laser-based light sources. After reflecting off the screen, the complete image enters the viewer’s eye. This results in softer light entering the eye, causing less irritation compared to LCD TVs. Additionally, laser light sources offer higher brightness and longer lifespans.
Of course, ultra-short-throw projection isn’t without its drawbacks. The most noticeable issue is screen distortion. Ultra-short throw and distortion are challenging to resolve. In practice, the center of the display screen is usually clearer, while the edges tend to blur. Earlier issues with brightness and color inconsistency have been greatly improved. Current ultra-short-throw technology using laser light sources has made significant strides in color and brightness, with physical resolutions even reaching 4K.
### Conclusion: Four Types of Display Technologies Represent the Future Direction of TV Terminals.
QLED TVs are the closest to us and offer relatively affordable pricing; OLED TVs boast remarkable quality and are the best carriers for printed display technology; Micro LED is still in the lab stage but represents the future of display technology with its revolutionary features; laser displays provide the best value for large-screen viewing, offering the ultimate震撼 experience.
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