LCD technology: how it works and its features

3LCD technology is based on the use of three separate panels, each dedicated to a primary colour: Red, Green and Blue. Light passes through these panels, and the image is reconstructed by combining these three light streams.

Colour reproduction in LCDs

Thanks to this process, the colours are natural, balanced and true to life.

• purple = red + blue
• white = red + green + blue

This technology is particularly popular for presentations, detailed visual content and professional environments.

The limitations of LCD

The main drawback of LCD screens lies in their handling of black. Even when the image is supposed to be black, light continues to pass through, and black areas appear dark grey. The result is less pronounced contrast and a loss of depth in dark scenes.

Service life

LCD panels have an average lifespan of 7,000 to 10,000 hours (depending on temperature, ventilation and usage).

DLP technology: how it works and its key features

DLP (Digital Light Processing) works in a completely different way. It uses micromirrors that reflect or block light. As a result, black corresponds to a total absence of light and white to maximum reflection. This produces a very high contrast.

DLP image rendering

Key advantages: deep blacks, high contrast, sharp and dynamic images. Main limitation: colours are generated via an RGB rotating filter, which can sometimes result in less vibrant colours, particularly on single-chip DLP models.

Mono DLP vs 3DLP: a key difference

Mono DLP

Uses a single chip and an RGB rotating filter.

• Advantages: affordable price, good durability.
• Disadvantages: less accurate colours.

3DLP

Uses 3 LEDs (one per colour) without a rotating filter.

• Result: exceptional picture quality, perfect colours, deep blacks, high brightness.
• Drawback: very high cost (up to €70,000).

DLP lifespan

DLP systems offer a longer lifespan: up to 20,000 hours. Ideal for heavy use and professional installations.

Quick comparison: LCD vs DLP

• Colours: LCD (Very accurate) / DLP (Good to excellent)
• Contrast: LCD (Medium) / DLP (Very high)
• Black: LCD (Grey) / DLP (Deep black)
• Lifespan: LCD (7,000–10,000 hours) / DLP (up to 20,000 hours)
• Heavy use: LCD (Average) / DLP (Excellent)

Which one should you choose, depending on your needs?

Standard use (offices, meetings, presentations)

Recommended LCD for its accurate colours, pleasant display and good value for money.

Heavy-duty use (museums, continuous display, digital signage)

DLP recommended for its superior durability and low maintenance.

High-end applications (cinema, simulation, immersive experiences)

3DLP recommended for maximum quality and flawless rendering.

A common mistake

Choosing solely on the basis of price or a technical specification can detract from the experience, cause visual fatigue or limit the impact of your content.

Real-life examples

• Corporate meeting room (used 4–8 hours a day, PowerPoint / video conferencing): LCD recommended.
• Museum / exhibition (in use 7 days a week, continuous screening): DLP recommended.

Conclusion: LCD or DLP?

There is no single “best” technology that suits everyone. The right choice depends on your intended use, how often you use it, and your budget.

AV Application’s expert opinion

At AV Application, we never simply opt for a “default” technology. We analyse your environment, your usage and your constraints to offer you the most appropriate, sustainable and high-performance solution.

The light output refers to the amount of light that the projector is capable of projecting onto the screen.
It is measured in ANSI lumens, which is the industry standard for projectors.

 The higher the number of lumens:

• the brighter the image
• the longer it remains visible in a well-lit environment