Screen Types
Overview of Screen Types (LCD / OLED / TFT, etc.)
The type of screen used in a body camera directly affects its display performance, power consumption, cost, and environmental adaptability. The most commonly used screen types include LCD (Liquid Crystal Display), TFT-LCD (Thin Film Transistor LCD), and OLED (Organic Light-Emitting Diode). Each technology has its own characteristics and is suited for products with different performance and positioning.
Comparison Table of Screen Types(Red is for our use)
| Screen Type | Backlight Required | Color Display | Viewing Angle | Power Consumption | Cost |
| LCD | Yes | Medium | Fair | Medium | Low |
| TFT-LCD | Yes | Good | Good | Medium | Medium |
| OLED | No | Excellent | Excellent | Low | High |
1. LCD (Liquid Crystal Display)
Working Principle: Uses a backlight that passes through a liquid crystal layer to control light transmission and form images.
Advantages:
- Low cost
- Mature and stable technology
- Widely used in mid- and low-end devices
Disadvantages:
- Moderate contrast and color performance
- Relies on backlight; poor visibility under sunlight
Typical Applications:
- Status displays
- Non-touch display screens
2. TFT-LCD (Thin Film Transistor LCD)
Working Principle: An upgraded version of LCD that uses thin-film transistor technology to control each individual pixel.
Advantages:
- Fast response time
- Better color performance and finer image quality
Disadvantages:
- Slightly higher power consumption
- Thicker than OLED
Typical Applications:
- High-resolution preview screens
- Playback screens
- Main displays with menu operations
3. OLED (Organic Light-Emitting Diode)
Working Principle: Each pixel emits its own light, eliminating the need for a backlight.
Advantages:
- High contrast
- Vibrant colors
- Ultra-thin and wide viewing angles
Disadvantages:
- High cost
- Risk of image burn-in under strong light
- Relatively shorter lifespan
Typical Applications:
Touchscreen versions
High-end body cameras