How Do You Know if Your Tv Is Rgb or Rgbw
4K SUHD Tv set of Samsung Electronics
While 4K UHD TVs have iv times more clarity than standard Full HD and is growing quickly in the global Television receiver market place, RGBW TVs are also appearing in the market place and have a lower flick quality – in both pixel quantity and quality – than 4K UHD TVs . When the products are displayed alongside 4K UHD TVs in stores, consumers should be aware of what makes the 4K UHD TVs a better purchase option: the highest motion-picture show quality available.
A Departure in Pixels
UHD TVs, also known as 4K, take approximately viii million (3,840×2,160) pixels, iv times the corporeality of pixels in Full HD TVs (approx. 2 meg pixels, 1,920×1,080). This allows 4K TVs to display the same paradigm with even more detail and clarity. However, what happens when the number of pixels is reduced?
If the number of pixel increases from 2 meg to 8 million within the same size Television set, the size of the pixels have to be smaller in order to display even more vivid details. On the other hand, if the number of pixels decreases, the display projects lower resolution as a upshot.
RGBW TVs employ a pixel structure called RGBW (or WRGB), which differs from the RGB construction that 4K UHD TVs employ. This method converts some of the RGB sub-pixels to white (West) light, reducing the number of the pixels that tin actually produce colors by 25 percentage. This equates to a lower quality, less detailed picture on the screen.
Looking at the International Standards
According to international standard organizations such as ITU, ICDM (formerly known equally VESA) and ISO, 1 pixel – the smallest unit that produces colors on brandish – must be square-shaped with a width and height ratio of one:1, to be capable of expressing the full range of colors.
In the case of RGBW TVs, pixels are square shaped, bounden iii sub-pixels together to make up a pixel such as BWR and GBW. With this procedure, however, 75 percent of the full pixels are left with imperfect color structure. For example, BWR pixels cannot express the colour green, pregnant these TVs exercise not satisfy the international standard definition of a pixel.
In order to provide consumers with accurate product information, CEA and DE- IT organizations in the Usa and Europe- have started a 4K UHD logo plan. Only TVs that encounter the strict UHD definition and requirements are allowed to use a 4K UHD logo from CEA and DE on all marketing materials including packaging. As a consequence, RGBW TVs cannot qualify for a logo, as they do not satisfy the definitions of 4K UHD. All of the Samsung's 2015 UHD TVs qualify for CEA and DE'due south 4K UHD logo program.
[Definition of standard]
ISO 9241-302
- Pixel – smallest element that is capable of generating the full intended functionality (east.g. color and grey scale) of the display. Notation 1 to entry: In a multicolor display, information technology is the smallest addressable element capable of producing the full colour range or the smallest element that is capable of generating the full functionality of the display.
IDMS 1.03 (A motion-picture show quality exam method developed by ICDM)
- Pixel – Picture element: A pixel is the smallest chemical element of the display surface which can reproduce the total range of luminance and colors of the FPD.
- Addressability – Addressability refers to the number of (complete) pixels that tin can be separately and adequately controlled.
International Standard · Certification Organizations
| Distinction | Organizations | Activity |
| Standardization arrangement | ICDM (former VESA), ISO | – Establish international standards including moving picture quality- Establish detailed movie quality test methods such as IDMS, ISO9241-30X |
| Electronics – Information technology devices | CEA, DE | – Representative manufacture groups in US, and Europe- Run 4K UHD logo programs |
Exam Agency
| Nemko, VDE, UL, TUV, Intertek | – Conduct tests based on client requested protocol and verify the cess results |
Qualification marks of DE and CEA for Samsung 4K UHD Television receiver
Behind the Strict Standards
The reason why international standard organizations are so strict about the definition of a pixel is due to pixels having a large bear on on a TV's picture quality. For 4K UHD TVs, which employ RGB pixel structure, all pixels are aligned in lodge throughout the horizontal (iii,840) and vertical (2,160) dimensions. Even so, RGBW TVs take lower picture quality since the white lights (in RGBW) cannot produce any colors, leaving the color of pixels unmatched between the lines.
According to a study conducted by the Norwegian test agency Nemko, which investigated how sparse stripes of red, green and blue colors are expressed on displays, RGBW TVs produced tile-patterned images while 4K TVs produced clean, sharp lines. To ensure a quality picture standard across the industry, these organizations established strict definitions of pixels.
4K SUHD TV of Samsung Electronics
Pic Quality Determines the Value of the TV
Samsung Electronics commissioned testing agencies such as VDE and Nemko for picture quality comparison tests based on international standards between 4K UHD TVs and RGBW TVs. The results from the testing agencies showed that the resolution of RGBW TVs falls curt compared to that of 4K UHD TVs.
Intertek and UL (Underwriters Laboratories) also published test reports on a Samsung Television set production, using two TVs. One TV was equipped with an RGB panel and a second, the test model, was equipped with an RGBW panel.
Intertek concluded that "the addressable resolution of RGB type is 3,840 x 2,160 for each crimson, green bluish." Regarding the RGBW Television receiver, Intertek concluded that "the addressable resolution display is ii,880 Ten ii,160 for each cerise, green, blue" (Based on international standard ISO9241-305 6.9.9 and CEA UHD, DE UHD pixel definition.)
In addition, UL'southward test validated that "the full number of pixels of RGB stripe type is eight.three mega pixel, while RGBW type is 6.2 mega pixel." (Based on international standard ISO9241-305 pixel size and pitch from artwork.)
Despite such reports, RGBW TVs are notwithstanding existence displayed as having the same engineering science 4K TVs in retail stores. There are also reports by other testing agencies noting that RGBW panels meet international standards. This was determined by selectively choosing particular resolution tests using merely the black-and-white pattern. This is problematic for consumers who are planning to purchase a new 4K UHD TV.
Samsung Electronics has led the global Boob tube market for nearly x years based on the philosophy that the very basics of a Goggle box is the ability to offer the best picture quality possible to viewers. This belief will be held as the highest value for Samsung TVs, even when time to come technologies evolve – from 4K, 8K and beyond.
Source: https://news.samsung.com/global/what-is-rgbw-tv
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