Shenzhen Lianchengfa Technology Co., Ltd.

LCD screen and LED screen are two common flat display technologies, which essentially use electronic components such as liquid crystals and light-emitting diodes to output images or text. However, there are many differences in specific manufacturing processes, display principles, display effects, and application scenarios. The editor below will analyze the differences between LCD screens and LED screens in detail in terms of concepts, functional characteristics, advantages and disadvantages, and application scenarios, so as to better choose the display screen that suits you.

LCD screen

1. Concept

LCD (Liquid Crystal Display) is a liquid crystal display, which is an image output technology that controls the transmittance of light by changing the arrangement state of liquid crystal molecules, thereby realizing optical modulation. Its main components include two glass substrates, a polarizer coated with a liquid crystal layer, and a backlight. The liquid crystal layer is the most important and affects the performance of the entire display.

2. Features

a. Display principle: The electric field controls the arrangement state of liquid crystal molecules to realize the adjustment of light transmittance.

b. Display effect: bright colors, wide viewing angle, fast response.

c. Special functions: adjustable brightness, adjustable contrast, adjustable viewing angle, etc.

d. Power consumption: low power consumption, energy saving and environmental protection.

3. Advantages and disadvantages

advantage:

a. Bright colors, high degree of color reproduction

b. Wide viewing angle, free to adjust the viewing angle

c. Fast response, suitable for playing high-speed dynamic images

d. Low power consumption, energy saving and environmental protection

shortcoming:

a. The contrast is not high, and the black is not deep enough

b. Insufficient brightness to reflect sunlight

c. The backlight will irritate the user's eyes

d. Caton phenomenon exists at low temperature

4. Application scenarios

The application scenarios of LCD screens are very extensive, including various electronic devices such as personal mobile phones, TV sets, tablet computers, computer monitors, and digital photo frames. Its advantage is that the price is lower than that of the LED screen, and it can have a good display effect indoors and in some low-light environments. It is suitable for displaying text, static images, and a small amount of animation.

 LED screen

1. Concept

LED (Light-Emitting Diode) is a light-emitting diode, which is a semiconductor device that emits light by causing the material to undergo a recombination reaction through an electric current. The LED screen is composed of many light-emitting diodes, which can be divided into different types such as three-primary monochrome, full-color and true-color according to the order and quantity of colors.

2. Features

a. Display principle: Use the principle of current passing through semiconductor materials to generate light to control the brightness of LED lights, so as to realize the display of images or text.

b. Display effect: high definition, high brightness, high color reproduction, wide viewing angle, suitable for both indoors and outdoors.

c. Special features: adjustable color temperature, adjustable brightness, controllable refresh rate, etc.

d. Power consumption: low energy consumption, the power consumption is only about one-tenth of that of LCD monitors of the same specification.

3. Advantages and disadvantages

advantage:

a. High definition, high brightness, high color reproduction

b. Wide viewing angle, suitable for both indoor and outdoor

c. Long life, low power consumption

d. Size and shape can be customized on demand

shortcoming:

More expensive than regular displays

4. Application scenarios

The application range of LED screens is also very wide, including outdoor billboards, indoor display screens, stage shows, stadiums, guidance screens, electronic signs, etc. Its advantages are high resolution, long service life, suitable for outdoor and indoor use, good optical effect, and suitable for playing videos, animations, images and other content.

3. Comprehensive comparison

1. Different display principles

The display principle of LCD screen and LED screen is different: LCD screen uses voltage to control liquid crystal molecules to realize the adjustment of light transmittance; while LED screen outputs images or text by controlling the brightness of light-emitting diodes, without backlight help.

2. Different power consumption and lifetime

Compared with LCD screens, LED screens have significant advantages in terms of power consumption and lifespan. Its energy consumption is only about one-tenth of that of LCD screens. It can not only reduce energy costs during long-term use, but also prolong the service life.

3. Different application scenarios

LCD screens are suitable for static images and text display indoors and in low-light environments. They are relatively cheap and suitable for mobile phones, TVs, computer monitors and other equipment; while LED screens are suitable for large outdoor or indoor billboards, shows, and stadiums It is suitable for playing animation, video, image and other dynamic content.

4. Different display effects

Compared with LCD screens, LED screens have obvious advantages in terms of high definition, brightness and color reproduction, and are suitable for playing high-quality dynamic content. The LCD screen is relatively poor, and there are deficiencies in the depth of black performance, reflected sunlight, and backlight stimulation.

Generally speaking, LCD screens and LED screens have their own advantages and disadvantages, and you should choose the display screen that suits you according to your actual needs. At the same time, display screens of different technologies also have the characteristics of synergy and complementarity. In some occasions, they can be used in combination to achieve better display effects.

The above is a summary of the relevant knowledge about the difference between LCD screens and LED screens compiled by LCF Xiaobian. I hope it will be helpful to everyone. At the same time, you are welcome to add or correct. Lianchengfa (LCF) is a national-level professional and new "little giant" enterprise, a LED display application and solution provider integrating "hardware + software + content + interaction". Friends who need to buy LED displays can also directly contact LCF LED display manufacturer, a big country brand, trustworthy!