What are the generations of LCD screens?
Date:2025-08-06
The "generation line" of LCD screens (also known as "generation line") refers to the number of generations divided by the size of the glass substrate used in the LCD panel production line. The higher the number of production lines, the larger the size of the glass substrate, and the larger the size of the LCD panel that can be cut, resulting in higher production efficiency. Here are the key points:
1. Definition of Generation Line
-Divided by glass substrate size: Different generation lines correspond to different glass substrate sizes, for example:
-5th generation cable: 1100 × 1300mm, suitable for cutting 8-32 inch panels (laptops, monitors, televisions).
-8th generation cable: 2200 × 2500mm, suitable for cutting 46-60 inch TV panels.
-10th generation cable: 2880 × 3130mm, suitable for cutting large screen TVs over 40 inches.
-The higher the generation, the larger the substrate: High generation cables (such as 8th and 10th generations) are mainly used for large-sized TV panels, while low generation cables (such as 5th and 6th generations) are used for small and medium-sized products (such as mobile phones, monitors, etc.).
2. The role of proxy lines
-Economic cutting: Optimizing the cutting efficiency of panels of different sizes with different generation lines. For example:
-The 6th generation cable (1500 × 1850mm) can cut 8 32 inch or 4 65 inch panels.
-The 10th generation line (2880 × 3130mm) can cut 6 pieces of 65 inch or 15 pieces of 40 inch panels.
-Production process differences:
-Low generation lines (such as 4th generation) are produced with their substrates placed horizontally, while high generation lines (such as 8th generation and above) require vertical or inclined placement due to their large substrates.
3. The Relationship between Cable Replacement and Panel Quality
-Algebra ≠ Quality: Generation lines only represent substrate size and do not affect panel display quality. For example:
-The 32 inch TV panel has the same display effect regardless of whether it is produced on the 6th or 7th generation line.
-High generation cable manufacturers may adopt more advanced technologies (such as Sharp's UV2A optical alignment technology for 10th generation cables), but the core image quality still depends on the panel type (such as IPS, VA) and process.
4. Current mainstream distribution lines
-High generation line (8th generation and above): mainly used for large-sized televisions (such as BOE's 10.5th generation line producing 8K screens over 65 inches).
-6-7 generation cables: still widely used for monitors and medium-sized televisions.
-Low generation line (5th generation and below): used for small-sized products such as smartphones and tablets.
Summarize
The "several generation lines" of LCD screen only reflect the size of glass substrate and production efficiency, rather than the progressiveness technology. High generation cables are suitable for reducing costs of large-sized panels, while low generation cables are suitable for small and medium-sized products. When choosing equipment, the number of lines is not the key, the image quality depends on panel technology (such as OLED, Mini LED) and manufacturer tuning.
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