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Mini-LED / FALD Halo Diagnostic Engine

Blooming & Local Dimming Halo Test

Evaluate Full-Array Local Dimming (FALD) zone response, blooming light bleed, and HDR subtitle halo artifacts.

Target Shape

Peak Target Brightness

Animation Speed

Move cursor over canvas to drag high-luminance halo target manually[ Press F for Fullscreen ]

VESA DisplayHDR Local Dimming Benchmark Evaluation

Mini-LED displays utilize localized Full-Array Local Dimming (FALD) backlight zones (typically 512 to 5,000+ zones). When a high-luminance white element (like movie subtitles or star fields) moves across a dark pitch-black background, zone dimming algorithms must balance contrast against Blooming Light Bleed.

OLED / QD-OLED PanelsPer-pixel self-emissive dimming (8.29M zones on 4K). Zero blooming halo artifacts.

Mini-LED / FALD LCD PanelsDependent on zone density & algorithm response latency. Halo visibility increases at off-axis viewing angles.

診断プロトコル

ディスプレイテストの実施手順 (01, 02, 03)

準備

画面の汚れを拭き取り、環境光自動調整をオフにして、ネイティブ解像度と最大リフレッシュレートに設定します。

実行

全画面モード (F11) に切り替え、コントロールバーを使って各種テストパターンを順に表示します。

評価

部屋を暗くし、異なる視野角からムラやドット抜け、残像を観察してガイドと照合します。

ハードウェアアーキテクチャ

液晶・有機ELパネル技術の比較

プロフェッショナルIPS (In-Plane Switching)

卓越した色再現性と視野角。リファレンスモニターに最適。暗所でのわずかなIPSグローが発生する場合があります。

ゲーミングIPS (Fast IPS / Nano IPS)

ゲーミング向けの高速リフレッシュレートと応答速度。ただしVAと比較して静的コントラスト比は控えめです。

VAパネル (Vertical Alignment)

引き締まった深みのある黒と高コントラスト (3000:1+)。湾曲モニターに多い一方、暗所での黒残像に注意が必要です。

OLED (有機EL) ＆ QD-OLED

自発光ピクセルによる完全な漆黒、超高速応答、無限のコントラスト。自動輝度制限 (ABL) の影響を受けます。

ENGINEERING ANALYSIS

Technical Deep Dive & Display Methodology

Our testing methodology aligns with VESA, SMPTE, and ISO standards for display metrology. This diagnostic tool utilizes raw web APIs (Canvas, WebGL, CSS Color Level 4) to ensure bit-perfect rendering, bypassing OS-level compression and scaling where possible.

Technical FAQs & Helpful Content

Mini-LED Blooming & Halo Test FAQs

この診断機器、校正手順、ディスプレイ技術規格について知っておくべきすべての情報。

01.What is display blooming (halo effect) in FALD and mini-LED panels?

Blooming occurs when bright HDR highlights spill light into adjacent local dimming zones that are attempting to display dark backgrounds, creating a visible glowing halo.

02.Why does blooming occur around high-contrast HDR highlights?

Because individual local dimming zones cover thousands of pixels. When a small bright object (like a white star or subtitle) spans across a zone boundary, the entire backlight zone behind the dark background must illuminate.

03.How does dimming zone count (e.g. 576 vs 1152 vs 2304 zones) affect halo intensity?

Higher zone density reduces the physical area of each dimming zone, dramatically tightening halos around bright objects and minimizing perceived blooming.

04.Does OLED panel technology suffer from blooming artifacts?

No. OLED pixels are individually self-emissive and control brightness down to single subpixels, eliminating local dimming halos completely.

05.How do local dimming algorithm response speed and aggressiveness impact blooming?

Aggressive dimming algorithms suppress halos by lowering peak highlight brightness, while fast response algorithms prevent halo trailing behind fast-moving bright targets.

06.Can subtitle blooming be reduced on mini-LED monitors and TVs?

Yes, changing subtitle color to gray or translucent white and placing subtitles within designated lower black letterbox bars reduces local dimming halo intensity.

07.What viewing angle shifts make mini-LED blooming more severe off-axis?

Viewing mini-LED displays off-center increases perceived halo size because LCD panel off-axis light leakage allows backlight zone illumination to bleed into dark adjacent pixels.

08.How does peak HDR nit brightness (e.g. 1000 nits) scale blooming visibility?

Higher peak nit highlights increase contrast ratio between bright text and dark backgrounds, making blooming halos more visually prominent in dark room environments.

09.What is the difference between static blooming and dynamic motion blooming?

Static blooming affects fixed text and logos. Dynamic motion blooming occurs when glowing halos trail behind moving objects across dimming zone boundaries.

10.How do IPS contrast ratios affect blooming halo size compared to VA panels?

IPS panels have lower native static contrast (1000:1 vs VA 3000:1), making halo light leakage more visible through dark pixels surrounding mini-LED zones.

次にどのテストを行うべきかお困りですか？トラブルシューティングが必要ですか？

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