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LCD resolution and pixels: Fundamental concepts and methods of calculation

Views: 211     Author: Reshine     Publish Time: 2023-09-06      Origin: Site

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LCD resolution and pixels: Fundamental concepts and methods of calculation

LCD screens have become commonplace in the field of electronic products. Resolution and pixel are two important LCD parameters that directly affect display quality and clarity. In this article, we will discuss the fundamental concepts of LCD resolution and pixels, as well as the methods used to calculate them. Click here for 11.6 Inch Lcd Display with Hdmi.


The LCD screen's resolution

The number of pixels in the horizontal and vertical directions of the screen is indicated by the resolution of an LCD screen. The number of pixels in the horizontal direction multiplied by the number of pixels in the vertical direction is usually expressed as 1920 x 1080. In this example, the number of pixels in the horizontal direction is 1920 and the number of pixels in the vertical direction is 1080.


The resolution of an LCD screen has a direct impact on the quality and clarity of its display. The higher the resolution of the screen, the more pixels it can display per unit area, and the higher the detail and clarity of the image. For example, at the same size, a screen with a resolution of 1920 x 1080 displays more detail and clarity than a screen with a resolution of 1366 x 768.


Pixels of LCD

Pixels are the basic units that make up the image of an LCD screen. Each pixel contains red, green, and blue color channels, through the combination of the brightness of these three color channels, can show a variety of colors and shades of gray.


The resolution of the LCD screen determines the number of pixels in the horizontal and vertical directions of the screen, while the pixel size directly affects the clarity and fineness of the image. The smaller the pixels, the more pixels can be displayed in the same area, and the higher the detail and clarity of the image. For example, a 0.39-inch pixel displays more detail than a 0.4-inch pixel at the same resolution.


Calculation Method

1. Resolution Calculation Method

The calculation of resolution is relatively simple, just multiply the number of pixels in the horizontal direction of the screen by the number of pixels in the vertical direction. For example, an LCD screen contains 1920 pixels in the horizontal direction and 1080 pixels in the vertical direction, the resolution of the screen is 1920 x 1080.

2. Pixel Calculation Method

The method of calculating pixel size is slightly more complicated and needs to take into account both screen size and resolution. Generally speaking, pixel size can be calculated by the following formula:

Pixel size = (screen size - border size) / resolution


Wherein, the screen size refers to the actual display size of the LCD screen, in inches; bezel size refers to the width of the black border around the screen, usually numerically equal to a portion of the screen size; resolution, as mentioned earlier, indicates the number of pixels on the screen in the horizontal and vertical directions.


For example, a 32-inch LCD screen with an actual display size of 31.5 inches (assuming a bezel size of 0.5 inches) and a resolution of 1920 x 1080 would have a pixel size of:

(32 - 0.5) / 1920 = 0.016667 inches = 0.416667 centimeters

It should be noted that the bezel size and actual display size may vary from one LCD to another, so you need to correspond to the specific screen product when calculating the pixel size.


In summary, LCD screen resolution and pixels are two critical parameters that influence display quality and clarity. Understanding these two fundamental concepts and mastering the corresponding calculation method for the selection and use of appropriate LCD screen products is critical in guiding. At the same time, as display technology advances, the resolution and pixels of LCD screens will improve, providing us with a more excellent visual experience.


What are the technological breakthroughs in LCD screens in terms of high refresh rate?

As a traditional display technology, LCD panels have been widely used in the past decades. With the development of display technology, LCD panels have made some technological breakthroughs in terms of high refresh rates, and the following are some of the major ones:


1. Fast Response Technology:

The response time of an LCD screen refers to the time for a pixel to switch from one color to another, which affects the refresh rate of the display. To improve the response speed, some manufacturers have adopted the fast response technology, for example, by changing the arrangement of liquid crystal molecules, and the use of special drive circuitry to speed up the response speed of liquid crystal, thus improving the refresh rate of the LCD screen.

2. Dynamic backlight adjustment technology:

Traditional LCD panels use a fixed backlight brightness, which leads to limitations in displaying high and low-brightness images. To solve this problem, some manufacturers have introduced dynamic backlight adjustment technology, which can adjust the backlight brightness in real-time according to the brightness of the image, to achieve a better display effect in both high and low-brightness images.

3. Frame Rate Enhancement Technology:

Frame rate enhancement technology is a technology that improves the refresh rate by increasing the frame rate of an image. By using faster scanning speeds and more advanced driver circuits, frame rate enhancement technology can significantly increase the refresh rate of an LCD screen. For example, by increasing the traditional 60Hz refresh rate to 120Hz or higher, blurring and tearing of the image can be reduced, and the clarity and smoothness of the image can be improved.

4. Vertical strip backlight technology:

Traditional LCD screens use lateral backlighting technology, The direction of light from this backlighting technology is parallel to the liquid crystal molecules, so the light will be scattered as it passes through the liquid crystal layer, resulting in a lack of clarity in the display. To solve this problem, some manufacturers have introduced vertical strip backlighting technology, which arranges the backlight tubes perpendicular to the liquid crystal molecules, thus making the light clearer as it passes through the liquid crystal layer, and thus improving the refresh rate of the LCD screen.

5. High-precision driver circuit technology:

The driver circuit is a very important part of the LCD screen, which is responsible for controlling the brightness and color of the pixels. Some manufacturers have adopted high-precision driver circuit technology to improve the refresh rate of LCD panels, which can provide more precise drive signals to improve the brightness and color accuracy of pixels.


In conclusion, LCD panels have made some technological advances in terms of high refresh rate, such as fast response technology, dynamic backlight adjustment technology, frame rate enhancement technology, vertical strip backlight technology, and high-precision drive circuit technology. These technologies can improve the refresh rate, clarity, and smoothness of LCD panels, thereby improving the user experience. Meanwhile, as display technology advances, more new technologies will be applied to LCD screens in the future to improve their performance.

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