Sharp 5.7-Inch LCD Panel LQ057Q3 Serial Evaluation

Introduction

In this evaluation, we’ll compare three variants of Sharp’s 5.7-inch LCD panels: LQ057Q3DG01, LQ057Q3DC03, and LQ057Q3DC02. These panels are commonly used in various electronic devices

Specifications Comparison

Common Features

1. Panel Size and Resolution: All three variants share the same 5.7-inch size and a resolution of 320×240 pixels, offering consistency in display dimensions across the models.
2. Display Mode: They all utilize TN (Twisted Nematic) technology with a Normally White, Transmissive display mode, ensuring compatibility with various applications.
3. Display Colors: Each panel supports a color depth of 262K, delivering vibrant and detailed image reproduction suitable for diverse applications.

Unique Features

1. LQ057Q3DG01:
   • Contrast Ratio: Boasts a high contrast ratio of 500:1, enhancing image clarity and definition, suitable for applications requiring sharp visuals.
   • Brightness: Offers a brightness of 320 cd/m² (Typ.), ensuring clear visibility even in moderately lit environments.
   • Viewing Angle: Provides a wide viewing angle of 80/80/80/65 (Typ.)(CR≥5) (L/R/U/D), ensuring excellent visibility from various viewing positions.
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2. LQ057Q3DC03:
   • Contrast Ratio: Offers a contrast ratio of 350:1, providing decent image quality but slightly lower than the DG01 model.
   • Brightness: Provides a brightness of 500 cd/m² (Typ.), ensuring clear visibility even in bright environments.
   • Viewing Angle: Provides a viewing angle of 80/80/80/65 (Typ.)(CR≥10) (L/R/U/D), ensuring acceptable visibility from various angles.
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3. LQ057Q3DC02:
   • Contrast Ratio: Features a lower contrast ratio of 60:1, potentially resulting in reduced image quality compared to the other models.
   • Brightness: Offers a brightness of 350 cd/m² (Typ.), ensuring decent visibility in moderately lit environments.
   • Viewing Angle: Provides a narrower viewing angle of 65/65/65/40 (Typ.)(CR≥5) (L/R/U/D), which may limit visibility from off-axis viewing positions.
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Selection Guidance for Engineers

1. Image Quality: For applications requiring superior image quality and contrast performance, the LQ057Q3DG01 with its high contrast ratio of 500:1 would be the ideal choice.
2. Energy Efficiency and Lifespan: Engineers concerned with energy efficiency and longevity may prefer the LQ057Q3DG01 or LQ057Q3DC03, both featuring LED backlighting, which typically consumes less power and lasts longer compared to CCFL.
3. Cost Consideration: If cost is a primary concern and slight compromises in contrast ratio and backlight technology are acceptable, the LQ057Q3DC02 could be a suitable option.

Conclusion

These Sharp’s 5.7-inch LCD panels offer similar basic specifications, they cater to different needs and preferences based on factors like contrast ratio, brightness, viewing angle, and backlight technology.