How to Customize Brightness for TFT LCD Module in Terminal Procurement?

In recent years, TFT LCD display technology has rapidly advanced, whether applied to monitors or televisions. For terminal vendors customizing TFT LCD Module, several critical parameters come into play: size, resolution, interface, and screen brightness.

Today, we will focus on sharing insights regarding TFT LCD display module brightness. The brightness requirements for electronic products vary across different scenarios. Some electronic products, such as home appliances and domestic electronics, use screens with lower brightness levels ranging from 250 to 300 nits, often accompanied by integrated black technology for a premium aesthetic. However, certain applications, like outdoor logistics PDAs, facial recognition at residential entrances, and military-grade toolbox computers, demand brightness exceeding 1000 nits.

It's evident that the selection of TFT module type varies across different application environments. Differentiating between indoor and outdoor applications requires selecting different types.

 

Firstly, you can match indoor and outdoor settings by employing TFT LCD display screens with varying brightness levels. Here are two reference values for brightness:

1. X < 500 cd/m²: Normal brightness, suitable for normal viewing environments like dimly lit indoor spaces.

2. X > 800 cd/m²: High brightness, ideal for environments with strong lighting, such as direct sunlight, providing better visibility compared to standard brightness.

 

Secondly, you can opt for fully transmissive or semi-transflective models:

1. Fully Transmissive: Match with normal brightness for indoor use or match with high brightness for outdoor use.

2. Semi-Transflective: Suitable for outdoor use under intense sunlight. Provides clear visibility and minimizes glare, albeit at a higher cost.

 

Hence, when choosing TFT LCD display modules, it's crucial to consider relevant circuit parameters and product specifications, along with the usage environment, to select the appropriate module.

 

 

Factors determining TFT LCD display screen brightness encompass more than just abnormal increases in working current or voltage. Other elements affecting brightness include backlight brightness, enhancement films on polarizers, and the transmittance of the LCD glass.

●Common methods for increasing brightness include:

1. Applying enhancement films to the lower surface of the glass, contributing to a 20-30% increase in brightness.

2. Backlight reflection using 3M's ESR technology for a 5-8% increase.

3. Utilizing high-brightness enhancement films for a 2-3% boost.

4. Implementing V-CUT light guides for a 5% increase.

5. Using high-brightness lamps for a 5-10% increase.

6. Employing dual-core lamps for approximately a 50% increase in brightness.

7. If brightness requirements exceed 1000 nits, designing dual-row backlighting is necessary.

 

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