Top 5 Mistakes When Choosing a CPU

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In almost every Choosing a CPU review, they talk about such a parameter as the type of matrix. Questions are often asked about it in the comments to the products. What is it and how to choose the right matrix for the TV, we will try to figure it out.

What are TV matrices, why are they needed and what are they
A modern TV screen (with the exception of laser TV) is a multilayer sandwich.

The figure below shows a simplified diagram of the structure of the LCD TV screen. The purpose of which is to form an image consisting of individual dots – pixels. Each pixel is formed by separate liquid crystals and electrodes associated with them, which form the screen matrix.

50″ (127 cm) LED TV Hisense H50B7100 black

LCD screen structure is a sandwich

Light-emitting diode (LED) illumination of white color is usually used as a backlight, Mixing these colors form 1 pixel of the desired color.

Quantum dot televisions (QLED or ULED) differ from conventional LCDs by having an additional “layer” containing red and green quantum dots, as well as blue LED backlighting. In this way, spectrally pure white light is provided and, as a result, the spectrum of displayable colors is expanded.

Quantum dot TVs have a special quantum dot layer

The pixel here is formed by three LEDs, also red, blue and green.

Perhaps this is the only type of TV for which the concept of a matrix is ​​not applicable. Here we need to talk about the light source, projector technologies and screen parameters.

Laser TV is an ultra short throw projector and a special screen

What are the types of matrices and what are the pros and cons of each type
TN-matrices are currently almost ousted from the TV market and remain only in the budget segment itself. Their feature is that in the off state, the liquid crystal transmits light.

IPS and VA matrices are the most common on the modern TV market at the moment

This results in more colors being displayed and more accurate color reproduction.

55″ (139 cm) TV LED Hisense 55U7QF gray
These TVs (for example, Hisense U7QF) are able to show both true black and real white. Ceteris paribus, these matrices have an advantage over the previously considered ones, but are also higher in price.

Quantum dot TVs have a wider color gamut

OLED TVs have real blacks and have almost infinite contrast, have the best viewing angles. Another disadvantage of OLED is the different lifetime of the LEDs. So for blue LEDs it is about 15,000 hours, while for green it is more than 100,000 hours. Thus, over time, these screens show the effect of “burn-in”. To compensate for the high cost of an OLED matrix, a white LED variant (so-called RGBW matrices) is often used, but since this does not change the total number of subpixels, the effective resolution of 4K panels drops from 3840 by 2160 to 2880 by 2160 pixels. Accordingly, the image becomes less detailed.

Laser TV or laser TV , for example Hisense L5F with a diagonal of 100 inches – stays away from all these nuances due to the use of a completely different technology, which is more characteristic of film projectors, rather than TVs.

100″ (254 cm) TV Laser Hisense 100L5F black 247 499 *
A special screen protects from ambient light and does not create additional strain on the eyes, as classic TVs shining into the eyes do. High image quality and the widest color range. Almost everything speaks in favor of this option, with the possible exception of two things. The first is the brightness, reflecting the light, it’s still difficult to be as bright as shining directly into the eyes, and the second is the price.

What parameters you need to pay attention to when choosing a matrix
Unfortunately, in this case, it makes sense to pay attention to the parameters only when choosing products from one manufacturer. Otherwise, there are a significant number of moments that simply cannot be shown in numbers. So, it is impossible to determine the color gamut of TVs by the numbers in the characteristics, and the viewing angle parameters often do not allow you to understand what exactly is at stake: when you can’t see anything at all or when the contrast begins to decrease. Therefore, often the most effective option is to compare the various models of TVs displayed side by side in the window.

55″ (139 cm) LED TV Hisense 55A7500F gray 32 999 *
However, if funds allow, it is worth paying attention to a laser TV. If you want classic options, then I recommend choosing between ULED and OLED TVs, only in the case of the latter, be sure to check that there are no white sub-pixels. The last two are also suitable in order to get the most detailed image, for example, if you plan to connect game consoles to the TV.

If you want to find the most budgetary, but at the same time high-quality option , then it is best to pay attention to TVs with a VA matrix, but it is highly desirable that it has a contrast ratio of at least 4000: 1. But it makes sense to pay attention to IPS matrices if you plan to use the TV as a monitor, or if the size of the room requires large viewing angles.

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