What difference between LCD or LED?
What difference between LCD or LED? - Table of contents:
LCD or LED both are very co-relevant, and that is why most people get confused between them. It is important to note that they are not similar and cannot be used interchangeably. Although they both are used in many similar products, there are noticeable differences based on various factors.
LCD panels and LED panels have been applied to all walks of life and can be seen everywhere around us, such as air conditioner remote control, refrigerator, mobile phone, car instrument, electric vehicle instruments, etc. All have LCD display panels.
In this article, we are explaining the significant differences between LCD or LED, which will help us know the usage and benefits of both. This will also help us understand which one should be considered when purchasing any product based on LCD and LED.
What is the LCD?
An LCD (short form of ‘liquid crystal display’) is a passive device with no lights to display text or media. Instead of its lights, LCD uses fluorescent tubes that help produce the lights and lighten the picture. The lights are always placed behind the screen panel. LCD produces the contents on the screen in the form of a dot matrix or segments. A liquid crystal filament is filled between the transparent electrodes, and the current is passed through it to energize the filaments. This eventually helps to emit visible lights.
The liquid crystal material used in LCD is neither a liquid nor a solid; however, it consists of properties similar to the crystallized solid. Besides, the molecules are arranged in fixed patterns. But it is important to note that the molecules are not fixed in any particular shape or form. Because LCD is comparatively thinner than casual backlit TVs, they have angle-viewing and anti-glare issues.
Advantages of LCD
A Few essential advantages of the LCD are listed below:
- LCD is low cost.
- LCD is light-weight than old CRT displays.
- LCD provides excellent brightness.
- LCD has better wide viewing angles.
Disadvantages of LCD
The most common disadvantages of the LCD are highlighted below:
- LCD is not good in low-light or dim-light environments because it has difficulty producing black and dark gray light.
- White saturation in LCD sometimes leads to uneven brightness.
- LCD is built with a fixed aspect ratio and a resolution.
- LCD can provide weak or bad pixels, resulting in varying intensity or shading on the screen.
What is an LED?
An LED (short for ‘light-emitting diode’) is a subset of LCD, which technically uses liquid crystal displays.
However, it differs from LCD because the LCD uses fluorescent lights while LED uses light-emitting diodes. These diodes are usually referred to as the semiconductor light sources that produce light when a current passes through them. This diode mechanism in LED produces better and sharper pictures than the general LCD. In LED, the light-emitting diodes can be placed either behind the screen panel or around the edges.
Advantages of LED
A Few essential advantages of the LED are listed below:
- LED usually lasts longer, making it long-life durable.
- LED does not generate heat.
- LED is highly power efficient.
- LED usually requires less maintenance.
Disadvantages of LED
A few essential disadvantages of the LED are listed below:
- LED is costly. The higher the screen size, the more it will cost.
- LED has a limited range of wide viewing angles.
- LED is tough to repair when damaged.
- The repair cost is high because LED parts are costly and tough to find according to the suitable product model.
Key Differences between LCD or LED
- LCD uses liquid filaments filled between glass electrodes that help emit the light, whereas LED uses the PN-junction diode concept, which is forward- biased for the light’s emission.
- In terms of the resolution, LED provides more pixels on the screen than LCD. The higher the number of pixels, the better the resolution and the quality of the picture.
- LED is comparatively more power-efficient than LCD.
- LCD has a better wide viewing angle as compared to LED.
- LCD emits light in all directions that allow users to easily watch the displayed content from different angles. LED, on the other side, emits light in one direction because of the PN-junction diode. This makes it tough for users to watch the content from different angles, especially wide angles.
- LED is much more costly than LCD.
- LED, once damaged, is tough to repair. However, LCD is relatively easier.
- LED is comparatively faster to start when compared with LCD. This makes the booting process faster for computers, televisions, and other LED-based products.
- LCD contains mercury which is not considered well for the environment, whereas LED doesn’t have it.
- LCD takes direct current as the input that can reduce the lifespan according to the time. On the other side, LED doesn’t have this issue.
- LED has gallium arsenides, which are heated to emit light. Besides, LCD has liquid crystals that are energized to produce light.
Which is better between LCD or LED?
LED and LCD are both the latest technologies, but LED has various advantages over LCD, making it better. To be specific, LED-based products (e.g., LED monitor) can run with fluidity, providing better response time than LCD. Apart from this, LED monitor are much clearer and better in picture quality than general LCD. The primary reason for the better quality picture in these TVs is the color wheel or distinct RGB (Red, Green, Blue) colored lights. This helps in producing more natural and sharper colors. That is the reason modern displays are coming with LED.
LED has better picture quality because they have RGB color wheels installed in them, which produce sharper and more realistic images.
Moreover, light-emitting diodes have a dimming property, which allows them to display accurate colors by blocking excessive light.