The development history of LED displays can be divided into several key stages:

1. Early Stage (1960s - 1980s):
- LED technology was invented in the 1960s, initially used for simple indicators and digital displays.
- In the 1970s, single-color LED displays emerged, mainly for electronic devices and basic advertising.

2. Rise of Color LED Displays (1990s):
- In the 1990s, full-color LED displays were developed using red, green, and blue (RGB) combinations, allowing for rich images and videos.
- During this period, LED displays began to see widespread use in outdoor advertising and large events.

3. Advancements in Small-Pitch Technology (Mid-2000s):
- The introduction of small-pitch LED displays made indoor applications feasible, significantly improving resolution for venues like conference rooms and stages.
- Technological improvements led to higher brightness and lower power consumption.

4. Smart and High-Resolution Displays (2010s):
- With the rise of the internet and smart technologies, LED displays integrated AI and big data for intelligent content management and interactivity.
- The proliferation of HD and UHD LED displays fueled growth in film production and high-end display markets.

5. Sustainability and Innovation (2020s - Present):
- Eco-friendly materials and energy-efficient designs have become industry standards, prompting a shift toward sustainable practices.
- Emerging technologies like Micro LED and flexible LED displays have spurred innovation, expanding market possibilities.

These stages illustrate the evolution of LED displays from simple applications to multifunctional, high-tech products. If you're interested in a specific stage or technology detail, let me know !