First, the budget. It seems that few people think this is a factor, but it is really important. If you just want to spend less than 3000 yuan to buy a 50-60-inch big TV, then buy an LED LCD TV, the brand can be domestic or joint venture, low-end products.
Second, the size. Generally speaking, the viewing distance is less than three meters and five inches, and 55 inches is enough; Within four meters, 65 inches is ok; More than four meters, 75 or 85 inches will do. Of course, I like the big screen. On this basis, there is no need to add another file.
Third, the type. At present, the TV types with mature technology include LED TV, OLED TV, laser projection TV, QLED TV (which can be classified as LED in essence) and so on. Because of the long time to market, low price and large share, LED TV is still a minority of other types of TV. In pursuit of display effect, OLED TV is the best; If you like big screen, laser projection is the best choice; Look at the cost performance and choose LED TV.
Fourth, the brand. There are many TV brands, but mainly domestic brands and Japanese and Korean brands. Take 65 inches to 75 inches as an example. If the budget is not much, it is recommended to choose domestic mid-range or imported (joint venture) low-end LED TV; If the budget is 5 thousand to 10 thousand, you can choose domestic high-end or imported high-end LED；; From 10,000 to 15,000, you can choose to import high-end brand LEDs and mid-range organic light-emitting diode TVs; /kloc-more than 0/5000, 20000, imported high-end organic light-emitting diode TV. Specific brands, LED TV, domestic Hisense, Haier, Skyworth, Changhong, TCL, Xiaomi, etc. Japanese and Korean brands are mainly Sony, Panasonic, Samsung, LG, OLED TV, Sony and Samsung are better, domestic brands have Skyworth, and laser projection TV can choose Hisense.
The above is for reference only.
I want to change a high-quality TV, but I am still confused about what kind of TV I should buy, especially when choosing traditional LCD TV or OLED TV. So what's good about OLED TV? Do we need to spend more money on these new technologies? Then I'll start with 1 Materials, 2. Appearance, 3. Color, 4. Brightness, 5. Response time, 6. Perspective, 7. Size, 8. The technical dimensions such as price are sorted out one by one, so that everyone can truly understand what their needs are and make the most appropriate decision when purchasing.
1. What are the specific structural differences between them?
Although many people seem to have a clear understanding of the difference between LCD and OLED, the difference between the two technologies is not as simple as imagined.
First of all, we should know that these two display technologies are completely different, and their luminous principles are essentially different.
Literally speaking, LCD (liquid crystal display) is the technology of "liquid crystal display", and TV with LED (light emitting diode) as the backlight is what we often call LCD TV.
And organic light-emitting diode literally means "organic light-emitting diode", which can "emit light by itself" without the support of "backlight".
Some people in the industry have made a very vivid metaphor for the difference between organic light-emitting diodes and LCD: organic light-emitting diodes are like the sun, because all pixels are like small light bulbs, which can "self-illuminate", so they are bright from any angle; LCD is more like the moon, because it needs the backlight behind the screen as an auxiliary light source to illuminate the display screen by reflecting and refracting light.
2. The difference in appearance between them.
Relatively speaking, the structure of LCD panel is complex, and it is difficult to make the panel extremely thin. Therefore, many merchants can only make the screen thinner by 0. 1mm after investing huge sums of money. Organic light-emitting diode (OLED) display technology, because it does not need the support of backlight, omits the liquid crystal and backlight module, and has a simpler structure. The body can naturally be extremely light and thin, which can probably reach the thickness of13 of the traditional liquid crystal. It can even turn the TV into a "work of art" like imaging paper.
In addition, the flexible and bendable characteristics of organic light-emitting diodes can be made into special-shaped screens such as curved screens, and the display will not have color cast and distortion, which is unimaginable in the LCD era.
3. How is the image quality brought by organic light-emitting diodes?
From the color point of view, OLED panel is self-luminous, and the displayed color is closer to the real world, especially its black field performance (or black level), that is to say, when displaying a black scene, only the lights of each pixel need to be turned off, so it is really black. When the LCD displays black, the backplane still emits black light, so even if the shielding effect is well done now, almost all LCD TVs still have light leakage when displaying black scenes.
In terms of color gamut, the color gamut coverage of organic light-emitting diodes is relatively high, and NTSC is generally around 95%, which can provide almost perfect natural colors.
In terms of brightness and contrast, organic light emitting diodes are self-luminous. Because of its excellent black field performance, the contrast is close to infinity, and it can still be clearly displayed in the sun. Moreover, the viewing angle can reach 178 without distortion, and you can enjoy outstanding pictures from any angle.
From the corresponding time point of view, because of the "self-luminous" property of OLED TV, it can directly control the light and dark changes of pixels, without deflecting liquid crystal molecules like LCD, so it has excellent performance for high-speed dynamic pictures, and we can hardly see the afterimage phenomenon with the naked eye. This is especially important for friends who love watching sports games and playing video games.
4. How big can 4.OLED TV be?
At present, because of the high-end positioning, it is difficult to see the screen below 50 inches, and 55-65 inches is the most common. That is to say, according to the size of the current mainstream TV, the OLED TV is not weak at all. In terms of product yield, the yield of 55-inch and 65-inch OLED panels is over 90%, and the service life reaches 50,000 hours, which can keep pace with LCD panels.
5. What is the price of 5.OLED TV?
As the latest display technology, the price of OLED TV also has a high premium brought by new technology. Generally speaking, the price of mainstream OLED TV in the market is 2~5 times that of mainstream LCD TV, which can be said to be value for money. Of course, high prices and new technologies are accompanied by good image quality.
However, due to the rapid progress of organic light-emitting diode production technology, its output and production capacity have also been greatly improved. It can be predicted that with more and more brands launching OLED TVs, the price of OLED TVs will definitely drop in the next two or three years. Moreover, this sign has begun to appear: a 55-inch OLED783 TV launched by Philips in the middle of this year, despite the application of Philips' patented P5 image quality engine, its price still does not exceed 8,000 yuan. This is good news for many friends who want to experience the high quality of organic light-emitting diodes.
To sum up the above points, OLED TV is not as unbearable as the outside world imagined. If you want good picture quality and not so bad money, you can choose OLED TV.
Broadly speaking, the effect of OLED TV is better than traditional LCD TV, such as pixel-level light control, wide viewing angle, high color gamut, fast dynamic response, infinite contrast and many other advantages. For ordinary users, choosing organic light-emitting diodes will have a better impression than LCD.
But for enthusiasts, organic light-emitting diodes still have several disadvantages.
Such as "burning screen" and "dirty screen", the brightness is too low.
Then what is "burning screen"?
Screen burning refers to the phenomenon that static images are displayed for a long time, leaving traces. This is because the OLED display technology is different from the traditional liquid crystal. It does not need a backlight, and uses a very thin organic material coating and a glass substrate. These organic materials will emit light when current passes through them. These organic materials have a long service life. With the increase of use time and heating, they will slowly degrade and age. A fixed position always displays the same static image for a long time, which will lead to more organic compound films corresponding to this part of luminescent pixels than other positions.
Although the problem of "screen burning" has been solved by factory publicity now, it is actually impossible. It's nothing more than pixel shift and ABL (brightness limit) to extend the life of the screen, but after all, you will one day.
In addition, the dark part of OLED TV will have the problem of dirty screen, because the voltage of the dark part will be unstable, which will make the dark part look dirty and the gray level of the dark part will be problematic. If it is lower than a certain gray level, it can only be displayed as pure black, resulting in a dead black part and lack of dark details.
In addition, the innate brightness of OLED TV is lower than that of LCD TV, and the ABL mechanism makes it difficult to light up the picture, which will make it difficult for us to have a very high explosive power when watching HDR video.
Of course, the traditional liquid crystal is not perfect, and there are many problems, such as HDR backlight is easy to produce halo, poor dynamic, and the picture is gray compared with organic light-emitting diodes.
So how should we choose? In fact, according to the display characteristics of the two mentioned just now, the organic light-emitting diode is recommended to be used in a relatively dim room, which can show greater advantages, while in a bright living room, it is recommended to choose the traditional LCD.
Traditional LCD TV and OLED TV have their own advantages. Traditional LCD TV (namely LED/LCD TV) adopts backlight imaging. If the technology is mature, it can also achieve great color display effect by using partitioned backlight. For example, Samsung and Sony are still launching new LED TV products, which shows that LED TV still has its own market.
However, after all, organic light emitting diodes are one of the next generation display technologies. Compared with LED, it has great advantages in color rendering, energy saving, expansibility and environmental protection. If the price factor is not considered, OLED TV is still recommended. At present, Sony, LG, Xiaomi and other manufacturers have launched their own flagship TV products of organic light-emitting diodes, which are available at home and abroad, indicating that organic light-emitting diodes are ready for mass production and suitable for home use, and everyone does not have to worry about the problem of immature technology.
So, in a word: the budget is limited, you can choose the best LCD TV in the budget; Buy OLED TV regardless of the price.
About brands, Toshiba, Samsung, Sony, etc. Abroad, domestic TCL, Hisense, Skyworth, Xiaomi, Huawei and OPPO are all good choices.
Traditional LCD TVs and OLED TVs display 25 frames per second. The reason why we see TV pictures moving is because of the phenomenon of "visual persistence" of human eyes. The vision produced by light on the retina will remain for a period of time after the light stops. This is the basis for the formation and dissemination of visual media such as animation, television and movies. When the continuous image changes more than 24 frames per second, the human eye cannot distinguish a single static image, which looks like a continuous and smooth visual effect. Such a continuous picture is a video.
If you enlarge a black-and-white picture, you will find that the picture is made up of small squares, which are pixels. These pixels are represented in binary, either "0" or "1". By analogy, the more binary digits a pixel has, the more colors it can represent. When a pixel is 8 binary bits, each pixel of this image has 256 colors to display.
How are colors displayed?
If you look at the screen with a microscope, you will find that each pixel is composed of three sub-color pixels: red, green and blue. Many colors can be modulated by the brightness levels of red, green and blue sub-color pixels.
Whether it is LCD screen or OLED screen, the color display screen is adjusted by modulating the ratio of red, green and blue primary colors.
What causes the differences between LCD screen and OLED screen in appearance, black field performance, brightness, response time, viewing angle and price? Although LCD and organic light-emitting diode screen realize the same principle of color, they are two completely different display technologies, and there are essential differences in the principle of light emission, which leads to great differences in display and form between the two TVs.
LCD needs to rely on backlight as light source.
The backlight only displays white, and the screen can display different colors because the LCD panel selectively filters the backlight, and the purpose of displaying different colors can be achieved by controlling the throughput of the backlight.
The red, green and blue sub-pixels of each pixel of the organic light emitting diode have self-luminous characteristics.
The full name of organic light-emitting diode is organic light-emitting diode, that is, organic light-emitting diode, so the organic light-emitting diode screen does not need "backlight module" and naturally does not need liquid crystal module. Compared with LCD, the structure of organic light-emitting diode is simpler and can be made very thin. For example, the thickness of OLED TV can be 1/3 of that of traditional LCD TV, or even thinner, so thin that it can be bent and rolled up, and stored in a box, completely hidden.
In terms of form, the OLED screen can be said to be a great victory. However, many friends still want to see the subtle performance of LCD and OLED.
Due to the self-luminous characteristics of organic light-emitting diodes, their black field performance is excellent. Each pixel of the organic light emitting diode can be turned off to display black; But LCD can't, the backlight will light up the whole screen, and the LCD module can't display black without any light, so the black feeling of LCD is gray.
The performance of the black field can determine the contrast. The darker the black, the higher the contrast, so we always think that the screen of OLED will be brighter.
The LCD backlight is not very low, and the path of backlight brightness adjustment is very large, so the brightness of LCD TV can be very high. With quantum dots, its brightness can be higher. If the pixel of organic light-emitting diode is raised to a higher level for a long time, its life will be affected.
OLED TV performs better in darkroom, while LCD TV performs better in brighter environment. Here, I want to advise you not to watch TV and mobile phones in very dark places. If the eyes are used in dim light for a long time, the pupils will grow up for a long time, which will block the circulation of liquid in the eyes and easily lead to glaucoma. The low contrast sensitivity of eyes in the dark will increase the burden of eye accommodation system and further lead to deepening myopia.
When the liquid crystal changes between light and dark, it is necessary to deflect the liquid crystal molecules and drive the chip to change the response time of this process, so there will always be motion blur and afterimage on the liquid crystal screen.
Because the pixels of the organic light-emitting diode can directly change the light and shade, the afterimage phenomenon is almost imperceptible to the naked eye, and the high-speed moving picture will be smoother. Therefore, from the corresponding speed, OLED TV is far superior to LCD TV.
The perfect angle of LCD is in the middle, and the image quality at other angles will be degraded. At this time, because the light source providing LCD display has a certain directivity when it is output after refraction and reflection, beyond a certain range, color distortion will occur. Although IPS and other technologies have improved the viewing angle of LCD, they are still not as good as organic light-emitting diodes. OLED TVs display basically the same pictures at different angles.
To sum up the answer, OLED TV is superior to "predecessor" LCD TV in terms of energy efficiency, reaction speed, brightness, contrast and viewing angle, but LCD TV is cheap. Moreover, OLED TV will still face many challenges in the future, because it also has many shortcomings.
The above personal views are welcome to criticize and correct.
Choose LCD for more than 75 inches, organic light-emitting diodes for less than 75 inches, and organic light-emitting diodes for 88 inches if the money is not bad. From the perspective of cost performance, LG is better.
Last week, we almost repaired Mr. Li's home decoration, and the bed and furniture moved in. The next step is to install home appliances.
Mr. Li also asked the same question about choosing a TV set. How to choose a TV set?
I gave Mr Li an idea.
First, determine the size of the TV according to the living room. So I know the TV specifications that are coordinated with my living room. I provided him with a "New Standard Table of Color TV Selection Size" issued by China Electronic Video Association.
According to the above table, Mr. Li's living room is 3.6m wide and needs to install a 75-inch 4K TV.
Second, refer to the size of the TV. Determine the preliminary budget. Mr. Li's budget for buying TV is 5000- 10000 yuan.
Third, what kind of TV will be shown according to this budget. 5000- 10000 yuan is basically determined for LCD TVs, and organic light-emitting diode TVs can be excluded, because the lowest price for mid-range organic light-emitting diode TVs is 15000 yuan.
Fourth, we accompanied him to the appliance store during the May Day business activities. We found the boss and said that our decoration company planned to purchase a 75-inch LCD 4K TV. The boss recommended several TV sets with better sales recently.
As can be seen from the above table, excluding Samsung UA75TU8000 and Toshiba 75M540F, there is no advantage in both hardware and performance.
TCL 75 Q 10 is only a little more valuable, and other meaningful things are Joann audio, which supports Dolby vision and Dolby panoramic sound. Among these models, Thunderbird 75R635C is the best.
This is a very cost-effective HDR TV, which is excellent in both picture quality and hardware performance, and has an immersive feeling in sound quality. The previous software optimization problem has been optimized very well now.
I suggest Mr. Li start with the strongest Thunderbird among these models. Mr. Li is also interested in this TV and asked about the price. Usually it is 8500 yuan, and now the activity price is 8000 yuan.
Then, we tested the quality of TV from the following three aspects.
1, high contrast
Only high contrast can make black bits reappear. If the contrast is low, the original black bits will turn gray, and the image will become flat and lack realism.
It is actually very easy to observe and compare when buying. Generally, when there is no picture signal on the cheaper TV display screen, the picture color will be yellow. The higher the price, the darker the color and the higher the contrast.
You can see if the screen is black enough without screen input. To judge the quality.
2, the clarity is better.
In fact, definition should be divided into static definition and dynamic definition. The former is mainly affected by factors such as resolution and contrast, while the latter is mainly affected by time.
In the implemented high definition standard, the definition performance of TV is evaluated by "image definition (static) moving image trailing time". The shorter the time, the better, generally about 20 milliseconds.
3. Is the screen bad?
Carefully observe whether there are bright spots and dark spots on the screen. When choosing LCD TV, adjust the screen to full green and full blue, find dark spots when full green and bright spots when full blue.
Once there are bright spots or dark spots, it is very easy to see them. If not, there are no bad spots on the screen.
We chose a TV set with good performance and told our boss that our company would cooperate with him for a long time in the future. Finally won 7500 yuan. Mr. Li was very satisfied and said happily, "I didn't expect to start a TV set with such high cost performance, and the price was lower than my budget, which was worth it!"
Verb (verb's abbreviation) Conclusion: This is the whole process of purchasing TV sets, and I hope it will inspire your purchasing ideas and quality control.
Traditional liquid crystal is generally LCD, while organic light emitting diode is a completely different device from LED. It's an organic light-emitting secondary. These two luminous principles are different. LCD mainly depends on the backlight layer, while organic light-emitting diodes are self-luminous.
Compared with traditional LCD TV, OLED TV has many advantages:
1, thin thickness: light weight, good seismic performance: its structure is firm, and cracks and scratches will not easily appear.
2. Good viewing angle: The viewing angle of this TV set is excellent, and there will be no visual distortion when the audience sits in a place with a large left-right angle.
3. Fast response time: The response time of turning on the TV and changing channels is extremely agile, and there is absolutely no smear phenomenon when the TV presents a "moving picture". Bring an excellent viewing experience. Therefore, large-screen TV has outstanding advantages. But its price is also higher, much higher than the traditional LCD TV of the same size.
Also, imported LOED TVs are much higher than domestic ones. Consumers can make appropriate choices according to their respective budgets.
The advantage of organic light-emitting diodes is good color reproduction, but it can't be reflected at home unless you have two sets for comparison at the same time. Disadvantages are high price, high power consumption and short service life. LCD screens are good at present, but don't choose the same size with too low price, you can get the goods at a price. Some functions that are too high are not needed.
Because OLED TV does not need backlight, it adopts self-luminous mode, so the corresponding speed is faster, the viewing angle is wider, there is basically no light leakage, the picture definition is better, it is very thin and light, and the power consumption is relatively low. Because organic light-emitting diodes use organic materials to emit light, their service life is less than half that of LCD TVs, and they are expensive. Compared with LCD TV, there is also a gap in color purity. It should be said that OLED TV is not very mature in technology. The traditional LCD TV technology is very mature and its price is lower than that of oled. Although there is a certain gap with oled in response speed, contrast and viewing angle, the gap is not very big, but the latest miniLED TV is basically not much different from OLED TV. Therefore, at present, when choosing TV, it is suggested to give priority to traditional LCD TV, and recommend TV products from Huawei, Hisense and Philips, which have good performance in sound quality, image quality, system fluency and extended functions. If you like early adopters, you can also consider Xiaomi TV 6 OLED, which is quite cost-effective. The following is a brief introduction to several LCD TVs and LED TVs that are relatively easy to use.
Huawei Smart Screen V55 Huawei Smart Screen V55 adopts a 55-inch 4K 92%DCI-P3 high color gamut screen, supports a high refresh rate of 120HZ, and adopts a 16 partitioned backlight system with a maximum brightness of 750nit, which is illegally close to the brightness of Xiaomi 6 OLED smart TV. With Honghu chip and HarmonyOS system, it brings excellent HDR vivid Honghu. Huawei's smart screen V55 adopts Divare 75W high-power audio system, and its overall sound quality and picture quality are excellent. Thanks to the deep optimization of Huawei's own HarmonyOS system and Honghu chip, it is better than ordinary Android TV in system fluency. In addition, Huawei's smart screen V55 uses 24 million AI eye-catching cameras, which supports AI fitness, video calling and other functions, and supports the distributed multi-screen function of Huawei HarmonyOS system, with excellent expansion functions. Although Huawei's smart screen adopts LCD panel, the image quality performance is still excellent by relying on the joint image quality improvement engine of Huawei HarmonyOS system and Honghu chip. At present, the price of Huawei's smart screen V 55 JD.COM is 5,499 yuan, and the price/performance ratio is good, so we can consider starting with it.
Huawei Smart Screen V75 Super MiniLED Huawei Smart Screen V75 Super MiniLED is Huawei's first mini LED smart screen. It uses 46,080 mini LEDs and 2,880 physical partitions, and the maximum brightness can reach 3,000 nits. With HarmonyOS system and Honghu chip image quality improvement engine, the overall image quality performance does not lose the mainstream OLED TV in the market. Huawei's smart screen V75 Super MiniLED adopts Divaret 20 unit sound system, which supports the establishment of a distributed speaker system with Huawei smart speakers, and the overall sound quality is excellent. Huawei's smart screen V75 Super MiniLED also uses a 24 million AI eye-catching camera. Relying on the powerful distributed ability of HarmonyOS system, the overall expansion ability is very strong. It should be said that Huawei's smart screen V75 Super MiniLED relies on the powerful mini LED backlight system, as well as the image quality improvement engines of Huawei HarmonyOS System and Honghu. The picture quality can be completely comparable to the mainstream organic light-emitting diode TV on the market, and the price is more advantageous. If the requirements for image quality are very high, choose LCD TV, and Huawei smart screen V75 Super MiniLED is undoubtedly a good choice.
Xiaomi TV 6 Organic Light Emitting Diodes Overall, traditional LCD TVs and OLED TVs have their own advantages. LCD TV technology is very mature and cost-effective, while organic light-emitting diodes have great advantages in response speed, contrast and viewing angle, but the price is higher. And the technology maturity is not as good as LCD TV. In addition, when choosing smart TV, we should not only consider the picture quality, but also consider the sound quality, system fluency, extended functions and so on. So if recommended, we prefer the traditional LCD TV. If we only consider early adopters, OLED TV can also be considered.