Key Performance Factors Of A LCD TV

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Key Performance Factors Of A LCD TV

Key Performance Factors Of A LCD TV

Among different types of TVs, regarding to the TV history, LCD TVs have won the majority of the market instead of CRT, Plasma, OLED.
The liquid layer inside a LCD TV controls the flux of light to go through the RGB flim. Although the LCD TVs are mature in the market, it is good to know and understand some key factors how a LCD TV performs well.

About Mianhong

Guangzhou Mianhong is a LCD TV manufacturer with 12+ years experience. Mianhong aims to provide a TV OEM solution for those who want to start up a TV business building a owned and unique TV brand. In this article, Mianhong will teach how a standard LCD TV should perform. Of course, Mianhong will produce good quality TV products with all the factors above the industry average.

Key Factors:

- Resolution(Display Volume), Screen Resolution VS Image Resolution

Resolution is a scale to measure the total resolution. In a modern TV(Not an old Black/White TV), a pixel normally stands for a sum of Red Dot, Green Dot, and Blue Dot. Among pixels to pixels, there is a distance and it is called pitch. More pixels mean better resolution, and resolution is an important display performance factor for a LCD TV.

Be aware that there are 2 kinds of resolution and it is not a good idea to mix them up. The first type is called screen resolution and the second type is called the image resolution.

The screen resolution refers to how many pixels are in a LCD TV screen, and it is measured by how many pixels are displayed in vertical way and horizontal way.
For example, a FHD LCD TV with 1920 x 1080 resolution means there are 1920 pixels horizontally and 1080 pixels vertically.

The image resolution refers to the size of a digital image, and it is a scale for signal and the format of the system. PAL system displays video with 720 x 576 resolution.

It would be confusing if the screen resolution can not match the image resolution. For example, a 4k resolution LCD TV playing a low quality video(360p) can not beat a 4k resolution LCD TV playing a 4k video.


Brightness refers to how bright a LCD TV can show to our eyes. A unit scale cd/m^2 is used to describe brightness. For most of the customers, a 50 – 70 cd/m^2 is enough for watching TV shows. An insufficient brightness may result in a bad experience. For example, the LCD TV becomes a mirror so customers can see themselves from the LCD TVs when they are watching TV. The brightness from the TVs is less than the environment brightness.


Contrast is a ratio to measure the difference between the max brightness and the min brightness.
For example. if a LCD TV has a max 250 cd/m^2 and a min 1 cd/m^2, then the contrast would be 250:1.
Contrast is important becasue it helps eyes to identify how well a gradient image is displayed.

Color Depth

The Color depth is a key unit to describe the total color a LCD TV can display.

Response Time

Response Time refers to how fast each pixel in a LCD TV reponse to the change of voltage, aka the time to change from dark to bright or vice versa. A good LCD TV response time should be less than 10 ms. Some video players requires a better response time so they usually buy a gaming monitor with less than 3 ms. A short response time is important, otherwise there would be a shifting when we are watching dynamics videos.