Which brand of LCD TV is good? What should we pay attention to when buying?
Author:Fang Fei Time:2021-07-21 11:21 Browse(110)
LCD TV is the main LCD panel, recognized as the best LCD panel is sharp (sharp).
The most important part of LCD TV is LCD panel. It is generally recognized that the best LCD panel is sharp's.

Which brand of LCD TV is good? What should we pay attention to when buying?

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the following is the reference material.
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select 15 unique skills of flat panel TV.
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Secret 1: identify the 7th generation screen.
you can't just look at the size.
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the 7th generation screen is based on Samsung's LCD technology, S-lcd, a joint venture between Samsung and Sony, is the first 7-generation LCD production line in the world to produce LCD screens.
the advantage of 7-generation LCD production line lies in the large panel size.
it is the most economical way to cut large screen panels, especially 40 inch screens, As a result, 40 inch LCD TV soon became the mainstream of the market.
as the seventh generation screen is the latest production line, it is most concerned by customers.
when the seventh generation screen was just launched.
as long as it is 40 inch LCD TV, it is the seventh generation screen.
but the sixth generation line can also cut 40 inch screen.
because of the good sales of 40 inch LCD, The 6th generation line also began to produce 40 inch screens.
therefore,
when choosing the 7th generation screen, you should not only look at the size, but also ask the sales staff in detail.
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because the price of LCD TV is falling continuously.
the product is very popular and has a good market. If only one screen is used, there will be a risk of insufficient supply. Therefore, many manufacturers use more than one panel, Even for the same type of products, several screens are purchased at the same time to ensure the market supply.
although the screens are different.
however, the famous manufacturers can guarantee the quality and effect, because in addition to the panel, the image processing circuit also plays a great role.
this is also the reason why some manufacturers are reluctant to disclose the brand of the panel supplier.
this is the reason why some manufacturers are reluctant to disclose the brand of the panel supplier
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Secret 2: 10000:1.
it must be Samsung and LG screens.
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selecting plasma.
contrast is an important index. Currently, there are 1500:1 and 3000:1 plasma contrast in the market, and the highest can reach 10000:1.
for contrast.
in the case of the same other parameters, of course, the higher the better, Contrast directly affects the hierarchical structure of the screen.
and the 10000:1 plasma screen must be LG V7 screen and Samsung V4 screen. You can ask the salesperson before you buy it.
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Secret 3: the secret of 1024 * 768 screen.
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General 42 inch plasmon.
the resolution is 852 * 480, but the new generation of plasma screen, such as Samsung V4, Panasonic G8 screen, Panasonic G8 screen, etc The resolution of pioneer's new generation screens has been improved to 1024 * 768.
the screen ratio of plasma is 16:9.
the ratio of 1024:768 is 4:3, which many people can't understand.
in fact.
the pixel shape of 1024 * 768 screen is not square, It's a 4:3 rectangle.
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secret book 4: the secret of 1024 * 1024 screen.
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compared with 1024 * 768 screen, Hitachi 1024 * 1024 plasma is more confusing.
this kind of screen is called the alls screen.
the pixels are not square, but 16:9 rectangle, each pixel is flattened, and the whole screen is still 16:9.
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The pixel structure of 1024 * 1024 is compact.
in order to improve the brightness and reduce the calorific value, it should be considered as a wise idea to adopt the interlaced display.
some people have complained about the interlaced display technology.
a person in charge of a department of Shanghai Panasonic plasma display Co., Ltd. thinks that the Hitachi 42 inch plasma TV with ALIS screen is just a circuit treatment, In fact,
interlacing and progressive display are the same. It's not realistic to say that the ALIS screen is 1024 * 512. It should be said that what you see in your eyes is 1024 * 1024. Your eyes can't distinguish each interlaced field, and what you see is a whole picture.
some people think that interlaced display appears to flicker, which is also wrong, The working principle of plasma is flicker, but the frequency is very high. Even if the interlaced display is used, there is no flicker phenomenon when watching, which is no different from ordinary plasma.
moreover, the 1024 * 1024 screen has the highest resolution in 42 inch plasma.
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Secret 5: 1080p is not full HD.
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what is full HD? If you want to watch HDTV programs.
to achieve the best effect, you need to use full HD TV.
it should be noted that.
Full HD and 1080p publicized by many manufacturers are not the same concept.
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the so-called 1080p.
it is necessary to use full HD TV.
it should be noted thatIt is able to display 1920 * 1080 programs, but the TV itself does not have the physical resolution of 1920 * 1080. It just reduces the 1920 * 1080 image to the actual physical resolution of the TV and displays it.
the physical resolution of 32 inch LCD TV is 1366 * 768.
but 1080p may be indicated in the manual, It is to process the 1920 * 1080 image into 1366 * 768 display.
this 1080p is the highest resolution or display resolution.
it only means that the TV can receive 1920 * 1080 signal, but the display time is not 1920 * 1080.
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Secret 6: don't be frightened by 6.22 million pixels.
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now there is another saying.
that the highest pixel reaches 6.22 million, In fact, it's full HD, or 1920 * 1080.
this is the case.
1920 * 1080 is 2.07 million pixels. If each pixel has R, G and B colors, it's 6.22 million pixels.
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Hitachi's plasma has written millions of pixels on its promotional materials.
but it doesn't mean high definition. The so-called millions of pixels are 1024 * 1024 screens, Although it is twice as high as the 400000 pixels of 852 * 480, the TV definition is determined by the horizontal pixels. The resolution of 1024 * 1024 megapixels is mainly increased to the vertical direction, and the resolution of 1280 * 720 or 1280 * 768 megapixels is also higher than that of 1024 * 1024 megapixels.
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Secret 7: HDMI -- the terminator of analog technology.
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HDMI is a full digital interface for transmitting HD signals.
it can not only meet the requirements of Full HD, but also support the most advanced digital audio formats such as DVD audio, And only one HDMI cable.
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because HDMI interface is all digital, some traditional analog era technologies lose their value.
an interesting phenomenon is.
when Sony launched BG crystal deep LCD TV and 3lcd rear projection in autumn, there was no Guixiang engine which used to be the core technology in the propaganda materials, while BG crystal deep V Series LCD TV and 42 The 50 inch 3lcd rear projection is equipped with HDMI interface.
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originally,
Guixiang engine is tailor-made for analog TV.
according to the information published on Sony China website.
Guixiang engine is an integrated digital processing system.
its core technology includes a series of analog, digital conversion, DRC precision imaging, HD conversion technology, etc.
and HDMI itself is a full digital system, Moreover, it has the function of high-definition conversion, so Sony no longer regards Guixiang as a selling point in the promotional materials of BGI Jingshen TV.
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if it has purchased a high-definition set-top box or DVD with HDMI interface.
it is necessary to purchase a flat-panel TV with HDMI interface. At this time, various image processing circuits or engines are used to improve the definition and reduce noise, You don't have to care.
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secret book 8: inside story of CCTV HD authentication.
On September 1, 2005.
CCTV HD TV channel started trial broadcasting in Hangzhou cable system, and then successively landed in Shanghai and Dalian cable system. It will be officially put into operation from January 1, 2006, with 15 hours of broadcasting every day and 120 yuan of charge per month. The landing range will be expanded to Chengdu, Chongqing, Dongguan, Qingdao, Ningbo, Guangzhou, Guangzhou, etc Guangzhou and other big cities.
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with the launch of CCTV HD.
CCTV has also started the certification of HDTV.
CCTV certified flat-panel TV.
first of all, it has to pass a very high charging threshold, Enterprises need to pay 50 million certification fee.
compared with the high certification fee.
the technical index of its certified flat-panel TV is not high.
pioneer's 42 inch plasma resolution is only 1024 * 768.
while Hitachi's 1024 * 1024 resolution products have passed the HD certification.
CCTV's HD program standard is 1920 * 1080.
of course, 1920 * 1080 physical resolution is used The resolution of 1024 * 768 or 1024 * 1024 is not high enough.
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in order to achieve the best HD effect,
HDMI digital interface is also necessary, and the dedicated set-top box of CCTV HD has HDMI output interface.
at present, there are many kinds of Full HD LCD TV with HDMI interface.
including Xiahua lc-37t7, lc-37t25, lc-37t18, lc-42t17, lc-37t18, lc-42t17, etc LC-47T17 16、LC-47T17 Y、LC-47T17 YB; Amoi lc-37hwt2a and other models.
the results show that Amoi lc-37hwt2a and other models are reliableIt is believed that more brands and models of Full HD products will be launched in succession.
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Secret 9: HDTV ready definition may not be high.
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now there are many LCD TVs or flat-panel TVs marked with HDTV ready logo, This logo has nothing to do with full HD.
the so-called HDTV ready.
refers to a TV set that has no HDTV tuner or decoding function inside the HDTV set and needs an external HDTV decoder to watch HDTV programs.
in the United States.
during the transition from analog TV to HDTV, Such TV sets are allowed to exist for a period of time.
in our country.
there is no wireless standard for HDTV, so it is impossible to have HDTV tuner in HDTV, so it is HDTV ready.
there are all kinds of resolutions. It can be considered that the physical resolution of HDTV ready is high or low, low 1024 * 768, 1024 * 1024 or 1366 * 768, Even 852 * 480 can be called HDTV ready.
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Secret 10: whether the color is good or not.
check with eyes.
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when manufacturers promote flat-panel TVs.
in addition to playing several generations of screen cards, they have to find other selling points, so there are dazzling characteristic technologies in flat-panel TVs.
Sony's name is broad crystal deep.
Panasonic's name is Viera, Samsung adopts the unique third generation dnle (digital natural image) technology,LG adopts XD engine, Philips pushes point by point crystal clear technology, Xiahua adopts self-developed "micro crystal divine painting" technology, Xiaxin adopts 4:4:4 dynamic true color technology, Xinke adopts SPS super image engine, Changhong adopts X-Power super power engine, SKYWORTH adopts six primary color digital processing technology.
the above technologies all belong to the category of image processing circuit.
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many people will find that it also adopts 7-generation screen, but in terms of color, sharpness, permeability and other aspects, each brand is not the same, And there are many differences in styles.
the biggest difference is the color.
in a popular word, the color of TV is fake, so there is no problem that it can truly restore the natural color, which is the premise.
after color processing, various image processing technologies mainly pursue more pleasant effects, Some people like the color of Sony.
some people like the color of Panasonic, some people like the color of Toshiba and Philips.
these differences are caused by the different image processing circuits adopted by different brands.
the unique image processing technology of each brand makes it different in the performance of picture quality, As for how much it can play in improving and improving the picture quality.
it still needs customers' own eyes to test.
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Secret 11: how healthy is health TV<
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TV is the most important component of household appliances.
therefore, healthy household appliances are doomed to be inseparable from TV.
now there is a new kind of health TV in the market, which attracts more attention.
the reason why this kind of health TV is healthy.
this kind of health TV is healthyIt's "eye fatigue caused by color restoring reality, saturation, comfort and high definition."
this kind of "eye fatigue free" flat panel TV is "new health TV."
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why people's eyes are tired? The main reason is that the eye time is too long.
the viewing distance is too close or too far, the light is too dark or too bright, some have problems with glasses, some have eye lesions, and there is no evidence that eye fatigue is related to color.
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and how can the color of this new health TV be improved compared with that of ordinary TV? A few days ago.
a consumer in Beijing bought a 26 inch LCD TV after listening to the sales staff's introduction that "the technology used in this TV has just passed the patent application, which can make the color of the TV better than that of ordinary TV". However, after comparison, he found that the color of the TV is not as good as advertised, so he doubted the patented technology, The discovery that the patent is not in line with the actual situation means that we do not rule out protecting our rights and interests through legal channels.
at least in the eyes of this consumer, the color has not been improved, Then this gentleman may not enjoy the health brought by the new health TV.
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Secret script 12: streaming media TV is a USB interface.
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what is streaming media? From the hardware point of view, it refers to some portable digital devices that can play in real time without occupying the memory of the playback device, such as USB disk, MP3, mobile hard disk, SD and MMC cards in DC and DV, specifically, it has USB and other multimedia interfaces; From the perspective of software, streaming media refers to online data streams and compressed network movies such as audio and video or jpg images, MP3 and MP4
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the emergence of streaming media is the inevitable result of the development of computer and network technology.
however, for the large screen TV represented by LCD and plasma, the development of streaming media has become increasingly prominent, It is questionable whether there is an inevitable connection.
many real-time streaming media programs have low definition.
they are not suitable for playing on large screen flat panel TV.
take CCTV's audio-visual online programs as an example.
even when watching on a laptop, the full screen is very blurred, Only when the window is reduced to about 3 inches, it will appear "clear."
this level of program is still played on large screen TV.
it is not acceptable.
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add some USB, SD, MMC card interfaces and the ability to decode files in JPG, MP3, MP4 and other formats.
not only streaming TV can do, but also DVD, MP3 and MP4 Digital set-top box can also be used.
a typical one is DVD with USB interface and can play MP3, MP4 and JPG programs.
at present, this kind of DVD has a lot of brands and models, which can be called streaming DVD. The price is only 600 or 700 yuan. If it is connected with a TV set, it can be called streaming DVD, It's a real streaming TV.
whether to buy a streaming TV or a streaming DVD to connect with an ordinary TV.
I believe readers have their own judgment.
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Secret 13: 3lcd.
double worries about its service life.
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3lcd is commonly known as high temperature glass.
it is one of the LCD family.
and what we usually call it The LCD TV is not the same concept.
3 the image size of LCD TV is only about 2 square centimeters in three piecesIt is formed on a transparent micro LCD board as thin as a plastic sheet.
it has the advantages of small size, high resolution and bright colors.
because of its small area and small space occupation, 3lcd can be made very light and light, and it is no different from plasma TV if you don't look carefully.
the disadvantage is that light must pass through the whole LCD board to image, and light is in the process of transmission, Most of them are absorbed by the panel layer by layer, so the light passing through the panel is less than 20%.
however, the short service life is a big worry of 3lcd.
it is shown in two aspects.
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the LCD panel used by 3lcd rear projection.
when it works, The light needs to be transmitted from behind to form an image on the screen.
because the smooth filler between the liquid crystal layer and the glass, i.e. the alignment film, is organic.
its molecular structure is very active at high temperature, and as a result, it is easy to be oxidized at high temperature.
when the light passes through the panel.
the temperature of the LCD panel will rise, and high temperature will cause the LCD panel to age, The color changes.
some LCD panels begin to age after 6000 hours.
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because the 3lcd rear projection adopts the back transmission type.
the light loss is high after passing through the LCD panel. In order to obtain higher brightness, it can only improve the brightness of the backlight, increase the heat output of the bulb, and the life of the bulb is not very long, Some 3lcd rear projection bulbs only have a service life of 6000 hours.
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Secret script 14: 16:9.
the advanced consumption of flat panel TVs.
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flat panel TVs are all TVs with the ratio of 16:9.
hanging on the wall,It's fashionable to put it on the TV cabinet.
but at present.
in addition to watching DVD and the newly launched CCTV HD channel, other programs are not suitable.
ordinary cable TV is 4:3.
even the digital cable TV, which is being promoted on a large scale, is 4:3. On the flat screen TV, one is not deformed, seeing all the pictures, using 4:3 mode, Leave two black edges on both sides; One is that we can't see the whole picture completely and cut off the upper and lower parts of the image, but there is still some deformation; Another is that you can see the whole picture, but it's severely deformed.
it makes 16:9 look a bit unseen.
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Secret script 15: the secret of DLP rear projection.
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the supplier of DLP technology is Texas Instruments TI.
the core is digital micromirror device DMD.
this is a nail size semiconductor device.
it is composed of more than 1.2 million fine mirrors, It plays the role of optical switch.
each mirror can be flipped back and forth.
it can be up to 5000 times per second, and the image refresh rate can be very high. At present, the ordinary DLP rear projection can achieve 300Hz.
when DMD and projection lamp, color wheel When the projection lens works together.
these flipped mirrors can together reflect a seamless digital image to the TV screen.
the current DLP rear projection is single-chip.
the DLP pixel response speed is fast.
the image is smooth.
DMD has high reflection efficiency.
and it is direct reflection, so the brightness, contrast, clarity, image quality are high The sharpness is excellent.
the pixel gap is small.
it is only 1 micron, and can hardly be seen, which increases the density and texture of the picture.
the pixel gap is small
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due to the small area of DMD,
the thickness of rear projection can be very thin. In foreign countries, DLP also belongs to flat panel TV.
DLP also has life problems.
however, as long as the bulb is replaced, DMD itself will not age, and its life can reach 100000 hours.
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in addition, it is suggested that you go to the following webpage to have a look.
this is an article in the home appliance forum, and there are tables in it, A detailed comparison of various domestic LCD TVs will be helpful for you to purchase http://www.jdunion.com/ShowArticle.asp?ArticleID=1813.

I wish you a satisfactory LCD TV.
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Why do you say so much upstairs! I've lost my eyes! If you want to buy a TV, you need to remember one thing.
if you want to buy a hard screen, it has a long service life and can save energy without hurting your eyes.
when you buy a TV, you can swipe your finger across the screen when you watch the program.
What's not trailing on the screen is the IPS hard screen, what's trailing is the soft screen, and what's trailing and the whole picture is white is Taiwan Chimei's garbage soft screen, No matter how cheap it is, you can't buy it.
if you buy LCD, you should buy domestic one.
only after-sales service can keep up with you. I personally suggest buying Skyworth or Hisense.
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