Why Do LCD Monitors Have Limited View Angle?

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In summary, LCD monitors have limited view angles due to the way liquid crystals are controlled to affect the light. As the angle changes, the orientation of the liquid crystals also changes, resulting in a different effect on the light. This is more pronounced in TN technology, but can be partially overcome using various methods. The pixels on the monitor can be thought of as little shutters, which block or allow light depending on the angle, causing a shift in colors due to the different shaped shutters for each color. Further explanation of the different LCD technologies can be found in the provided links.
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nanda gopal
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All the LCD monitors have very limited view angle. When one looks at the monitor even partly from a side of it, the Intensity and the Colors of the picture change very drastically. Why is it so? Is it just because that the Polarized panels are used for the monitors? Or the Liquid Crystals too have a role to play? Please explain the mechanism...
 
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I want to know the mechanism involved in the technology. The link that has been provided gives the information of just the different technologies available but no explanation of each of their technologies.
 
  • #4
The LC molecules must be controlled precisely to affect the light in exactly the right way. As you move off-axis the LC molecules are no longer in the same orientation relative to the light, so the affect is not the same as for perpendicular light. For LC modes like TN this causes a big problem as the LC has a very different effect on the light, but for other modes like VA the effect is much smaller so off-axis looks almost the same as on-axis. There are many methods to partially overcome this fundamental problem, some very complex and some simple.
 
  • #5
Think of the individual pixels as little shutters, like on venetian blinds. When looking straight on, when the shutter is open light is allowed through. But if looking at an off angle, the open shutter is still in the way and thus blocks some of the light. The colors shift because the different colored pixels have different shaped shutters.
 

1. Why do LCD monitors have limited view angle?

LCD monitors have limited view angles because they use liquid crystals to produce images. These liquid crystals have a specific alignment that allows them to control the amount of light passing through them. However, when viewed from an angle, the alignment of the liquid crystals can become distorted, resulting in a decrease in image quality.

2. How does the limited view angle affect the image quality?

The limited view angle can affect the image quality in multiple ways. When viewed from an angle, the colors may appear distorted or washed out, and the contrast may decrease. This is because the liquid crystals are not able to properly control the light passing through them, resulting in a less accurate display of colors and contrast.

3. Can the limited view angle be improved?

Yes, the limited view angle can be improved through various methods such as using different types of liquid crystals, adding layers to the screen, or using a different technology altogether. However, these improvements may come at a higher cost and may also affect other aspects of the monitor's performance.

4. Are there any benefits to the limited view angle?

Yes, there are some benefits to the limited view angle of LCD monitors. It can help with privacy, as the image is only visible to those directly in front of the screen. This can be useful for protecting sensitive information in a work or public setting. Additionally, limited view angle can also help reduce glare and reflections on the screen.

5. How does the view angle differ between LCD and other types of monitors?

The view angle in LCD monitors is generally more limited compared to other types of monitors such as OLED or IPS. This is because LCD technology uses liquid crystals, while other technologies use different methods to produce images. However, newer advancements in LCD technology have improved the view angle, making it closer to other types of monitors.

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