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TFT液晶バックカメラ

車載10.25″TFT LCDリバースカメラシステム

Project Overview

In response to rising safety standards in automotive markets, we engineered a tft lcd reversing camera solution featuring a 14″ automotive-grade display. This display is capable of receiving and presenting four separate camera feeds simultaneously—ideal for rear and side monitoring in commercial vehicles, buses, or heavy machinery.

Technical Challenge

  • 表示形式: Ultra-wide 1920×720 resolution (24:9 aspect ratio) to fit split-screen layouts.
  • Environmental Specs: Mechanically robust and thin (1.08 mm panel, PCBA thickness ≤ 3.2 mm) for dashboard integration.
  • Visual Performance: High NTSC ≥ 70% color gamut and 8-bit (16.7 million colors) fidelity for clear, true-to-life visuals.
  • System Compatibility: Normally-black TFT mode preferred for power efficiency and high contrast in both day and low-light driving conditions.

Key Display Specifications

パラメータ仕様
活動エリア243.648 × 91.368 mm
決議1920 × 720 pixels
ピクセルピッチ0.1269 × 0.1269 mm (RGB vertical stripe)
カラー16.7 million (8-bit)
色域≥ 70% NTSC minimum
表示モード通常は黒
Panel Dimensions251.148 × 101.098 × 1.08 mm
PCBA + Panel Dimensions251.148 × 142.548 × ≤ 3.2 mm

Engineering Approach

  1. Panel Selection & Validation
    The horizontally elongated TFT panel provides an ideal canvas for quad-camera split display, reducing the need for optical distortion or complex remapping.
  2. Mechanical Integration
    Adhering to a slim profile (1.08 mm panel thickness, ≤ 3.2 mm total with PCBA), the module was tailored for flush mounting behind dashboard styling bezels.
  3. Electrical & Video Interface
    We engineered a robust video pipeline accepting RTSP/NTSC composite streams from four camera inputs, then processed via our display controller onto the TFT panel.
  4. Optical Quality Tuning
    Gamma calibration and NTSC color tuning were applied during production to ensure consistency, color fidelity, and visibility across high-transmission automotive-grade optical films.

System Architecture & Integration

To ensure seamless camera visualization, the system was designed with the following layered architecture:

  • Input Layer
    Four analog or digital camera feeds, compatible with NTSC or CVBS signals, routed to an onboard AHD decoder or external ADAS processor.
  • Processing Layer
    Video streams synchronized and formatted by a custom video stitching or switching IC, depending on the selected view mode (quad-split, full-screen, or dual split).
  • Display Output Layer
    Processed image rendered directly to the 14″ tft lcd reversing camera module via RGB or LVDS interface, depending on client ECU architecture.
  • Control Interface
    Touch buttons or steering wheel-mounted triggers used to toggle views, initiate zoom, or enable parking guidelines overlay.

The integration workflow considered thermal dissipation, shielding for EMI/EMC robustness, and vibration-resistant FPC mounting.

User Experience Enhancements

The ultra-wide resolution and 70%+ NTSC color performance offer a clear advantage in real-world use:

  • Improved Situational Awareness
    The 1920×720 resolution supports real-time viewing of 4 cameras without downscaling, offering drivers precise distance judgment and object recognition.
  • Low-Reflection Display Performance
    The normally black TFT mode reduces ambient glare, offering strong visibility during night driving or tunnel entry conditions.
  • Instant Wake & Response Time
    Optimized driver ICs ensure sub-100ms screen wake and video display after reverse gear activation.
  • Flexible Mounting Options
    Due to its slim form factor and custom PCBA layout, the module supports horizontal or angled integration within dashboard, center console, or A-pillar structures.

Environmental Reliability

The display solution passed multiple automotive-grade validations, including:

  • Wide Temperature Operation: -30 °C to +85 °C
  • ESD Protection: 8kV air / 4kV contact discharge
  • Vibration Testing: Compliant with ISO 16750-3 standards
  • UV and Humidity Resistance: Enhanced polarizer durability

For OEM customers requiring higher IP protection or bonding, we also provide optional 光結合, 防眩表面コーティングそして カスタムカバーレンズ印刷 ブランディングおよび反射防止性能向上のため

事業成果

この tft lcd reversing camera モジュールは東南アジアの継続的なフリート車両プラットフォームに統合されました。主な成果：

  • モジュラー化されたPCBAとパネルの統合による市場投入時間の短縮
  • 2カメラ設計から4カメラ設計への費用対効果の高い移行
  • リアビュー視認性におけるエンドユーザー信頼性と規制適合性の強化

本プロジェクトの成功により、電気配送バン、低速都市物流車両、アフターマーケット向け自動車アクセサリーキット向けに同様のプラットフォームを複製可能となりました。

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