FSTN LCD Panel Comparison for Hitachi Products

In the realm of electronic engineering, choosing the right LCD panel is crucial for optimal device performance. In this evaluation, we compare two FSTN LCD panels from Hitachi, the SP14N02L6ALCZ and the LMG7420PLFC-X.

FSTN LCD Introduction:

FSTN (Film-compensated Super Twisted Nematic) LCD panels are a type of monochrome liquid crystal display known for their enhanced contrast and improved viewing angles compared to standard TN (Twisted Nematic) LCDs. The film compensation layer in FSTN panels reduces color distortion and enhances image quality, making them suitable for applications requiring high contrast and readability in various viewing conditions.

Specification SP14N02L6ALCZ LMG7420PLFC-X
Panel Model SP14N02L6ALCZ LMG7420PLFC-X
Panel Size 5.1 inch 5.1 inch
Resolution 240×128 240×128
Display Mode STN, Black/White (Negative), Transmissive STN, Black/White (Negative), Transmissive
Active Area 119.97×63.97 mm 119.97×63.97 mm
Outline 159.4×101 mm 159.4×101×7.7 mm
Surface Antiglare, Hard coating (3H) Antiglare, Hard coating (3H)
Brightness 150 cd/m² (Typ.) 150 cd/m² (Typ.)
Contrast Ratio 20:1 (Typ.) 20:1 (Typ.)
Display Colors Monochrome Monochrome
Response Time 160/110 (Typ.)(Tr/Td) 160/110 (Typ.)(Tr/Td)
Viewing Angle 40 (Typ.)(CR≥2, Φ2-Φ1) (L/R/U/D) 40/40/40/40 (Typ.)(CR≥2) (L/R/U/D)
Lamp Type WLED 1 pcs CCFL
Signal Interface 8-bit parallel 8-bit parallel
Input Voltage 5.0V (Typ.) 5.0V (Typ.)
Frequency N/A 75Hz

FSTN LCD Panel Comparison for Hitachi Products

FSTN LCD Panel Comparison for Hitachi Products

Key Differences:

  1. Outline: The LMG7420PLFC-X has a slightly thicker outline compared to the SP14N02L6ALCZ, measuring at 7.7 mm.
  2. Viewing Angle: While both panels offer a 40-degree viewing angle, the LMG7420PLFC-X specifies the angle distribution for left, right, up, and down views, indicating a more comprehensive viewing angle specification.
  3. Lamp Type: The SP14N02L6ALCZ utilizes WLED (White Light Emitting Diode) for backlighting, whereas the LMG7420PLFC-X employs a single CCFL (Cold Cathode Fluorescent Lamp).
  4. Frequency: The LMG7420PLFC-X specifies a refresh rate of 75Hz, which could be advantageous in applications requiring smoother motion rendering.

Choosing the Right Panel:

  • Application Specifics: Consider the specific requirements of your project. If a thinner outline and potentially lower power consumption are priorities, the SP14N02L6ALCZ with WLED backlighting might be preferable. However, if a higher refresh rate is necessary for smoother motion, the LMG7420PLFC-X could be the better choice.
  • Viewing Angle Requirements: If your application demands a precise viewing angle specification, the detailed distribution provided by the LMG7420PLFC-X could be advantageous.
  • Longevity and Maintenance: Factor in the longevity and maintenance considerations associated with the different backlighting technologies. WLEDs generally offer longer lifespans and lower maintenance requirements compared to CCFLs.