Quick wins for a faster PC:
Clear out junk files and repair common Windows errorsFree Scan →Scan for outdated or missing drivers - takes under a minuteDriver Scan →Repair Windows errors before they cause bigger problemsFix Now →Local dimming can improve contrast on an LED-backlit LCD, but it is not essential for every screen or viewer. It dims parts of the backlight to make dark areas look deeper while bright areas remain lit. How much that helps—and whether it introduces distracting halos or lost shadow detail—depends on the display’s design, settings, and the content you watch.
What local dimming does
An LCD does not produce its own light; a backlight illuminates the image. Local dimming divides that backlight into zones and adjusts each zone’s brightness. When the picture has a dark region beside a bright highlight, the display can dim the zone behind the dark area while keeping the highlight bright. This can increase perceived contrast, particularly in dark scenes and HDR content.
As an Amazon Associate I earn from qualifying purchases.
The control is by zone, not by individual pixel. If a bright object and a dark background share a zone, the backlight cannot illuminate one without affecting the other. Light around the object can appear as a halo, also called halation. Samsung Display explains that OLED avoids this particular effect because its pixels emit light individually and it does not need a backlight.
When local dimming is most useful
Dark-room viewing and subtitles
In a dark room, deeper blacks can make bright details stand out. The same conditions also make imperfections easier to see: halos around subtitles, stars, or small lights are especially noticeable against a dark background.
#1 Best Overall
- TCL QM6K QD-MINI LED TV SERIES - AFFORDABLE PREMIUM PERFORMANCE FOR SPORTS, GAMING & STREAMING. Experience superior contrast, rich color, and ultra-smooth motion with TCL’s QD-Mini LED technology. Designed to outperform traditional QLED and OLED TVs, the QM6K is the best TV for every moment—whether you're streaming, gaming, or watching the big game.
- QD-MINI LED. IT’S MINI LED PLUS QLED COLOR - BREATHTAKING BRIGHTNESS AND COLOR IN ANY LIGHT. Combines ultra-precise Mini LEDs with Quantum Dot technology for incredible brightness, bold contrast, and over a billion vibrant colors.
- TCL HALO CONTROL SYSTEM - BETTER BLACKS. SHARPER DETAIL. NO BLOOMING. Advanced local dimming eliminates haloing, enhances shadow detail, and improves picture accuracy—so dark scenes look deeper, and bright scenes stay crisp.
- DOLBY VISION, HDR10+, HDR10 & HLG - STUNNING HDR IN EVERY FORMAT. Enjoy 4K content the way it was meant to be seen. Dynamic HDR support delivers exceptional color, contrast, and detail across all major formats.
- 144HZ NATIVE REFRESH RATE + MOTION RATE 480 - SMOOTH, FAST ACTION—PERFECT FOR LIVE SPORTS. Watch fast-paced action with incredible clarity and minimal motion blur—making this one of the best TVs for sports.
HDR and gaming
Local dimming can help HDR highlights stand out against darker surroundings. For gaming, check the display’s behavior in its game or low-latency mode; some screens change dimming behavior in those modes. Moving objects can also reveal slow zone transitions, trailing glow, or dimming near the object.
Bright rooms and everyday use
On some LED monitors, local dimming can help the screen reach high brightness for a well-lit room. Its value still depends on the particular display. For text, office work, or mixed content, judge whether the improved contrast is noticeable enough to matter and whether transitions or brightness changes distract you.
Rank #2
- TCL QM6K QD-MINI LED TV SERIES - AFFORDABLE PREMIUM PERFORMANCE FOR SPORTS, GAMING & STREAMING. Experience superior contrast, rich color, and ultra-smooth motion with TCL’s QD-Mini LED technology. Designed to outperform traditional QLED and OLED TVs, the QM6K is the best TV for every moment—whether you're streaming, gaming, or watching the big game.
- QD-MINI LED. IT’S MINI LED PLUS QLED COLOR - BREATHTAKING BRIGHTNESS AND COLOR IN ANY LIGHT. Combines ultra-precise Mini LEDs with Quantum Dot technology for incredible brightness, bold contrast, and over a billion vibrant colors.
- TCL HALO CONTROL SYSTEM - BETTER BLACKS. SHARPER DETAIL. NO BLOOMING. Advanced local dimming eliminates haloing, enhances shadow detail, and improves picture accuracy—so dark scenes look deeper, and bright scenes stay crisp.
- DOLBY VISION, HDR10+, HDR10 & HLG - STUNNING HDR IN EVERY FORMAT. Enjoy 4K content the way it was meant to be seen. Dynamic HDR support delivers exceptional color, contrast, and detail across all major formats.
- 144HZ NATIVE REFRESH RATE + MOTION RATE 480 - SMOOTH, FAST ACTION—PERFECT FOR LIVE SPORTS. Watch fast-paced action with incredible clarity and minimal motion blur—making this one of the best TVs for sports.
What to check before choosing a display
- Black levels and contrast: With dimming enabled, do dark areas look deeper while bright parts retain their intended brightness?
- Blooming: Look for halos around subtitles, a bright cursor, or a small highlight on a mostly black screen.
- Shadow detail: Check whether dimming hides subtle detail in dark areas, a problem often called black crush.
- Movement and flicker: Watch moving bright objects on dark backgrounds for trailing glow, dim edges, flicker, or visible zone changes.
- Settings and modes: Try the available dimming levels and the modes you actually use. Stronger dimming may deepen blacks but make artifacts more conspicuous. Some monitors lock local dimming on in HDR, so the feature may not be optional in that mode.
- Backlight design and implementation: Full-array and Mini LED designs generally allow finer control than edge-lit layouts, but the control algorithm matters too. Zone count alone does not establish picture quality.
RTINGS’ TV guidance says not to buy a television solely on its dimming-zone count, and its testing describes possible issues when implementation is imperfect. Its monitor examples include 336 zones for the AOC Q27G3XMN and 1,152 for the AOC Q27G40XMN; those model specifications are not a performance ranking. RTINGS’ Mini LED monitor comparison notes variation between models and the importance of zone control. Check current, model-specific reviews rather than treating a larger number as a guarantee.
Free tools Windows power users keep installed
One-click scans. No signup required.
How OLED differs
OLED is an alternative way to show bright and dark areas together: each pixel emits its own light rather than relying on a shared backlight. It therefore does not use backlight local dimming and avoids the zone-based halo mechanism described above. That distinction does not establish that OLED is universally better; the evidence here does not settle every trade-off involving brightness, cost, longevity, or a particular use.
Rank #3
- 4k Ultra HD (2160p resolution): Enjoy breathtaking HDR10 4K movies and TV shows at 4 times the resolution of Full HD, and upscale your current content to Ultra HD-level picture quality.
- High Dynamic Range: Provides a wide range of color details and sharper contrast, from the brightest whites to the deepest blacks.
- All-in-one: Get right to your good stuff. With Fire TV, you can enjoy a world of entertainment from apps like Prime Video, Netflix, Disney+, Hulu, and HBO Max. Plus, stream for free with Fire TV Channels, Pluto TV, Tubi, and more. Access over 1.8 million movies and TV episodes. Subscriptions may be required. Feature and content availability may vary.
- Smart Home: Your smart home hub. Pair Fire TV with compatible smart home devices to see live camera feeds, use AirPlay, control your lighting and thermostat, and more.
- Free Content: Stream for free. Access over 1 million free movies and TV episodes from popular ad-supported streaming apps like Fire TV Channels, Tubi, and Pluto TV. Subscriptions may be required. Feature and content availability may vary.
RTINGS’ comparisons of Mini LED and OLED displays cover monitors and 2025-model TVs, but display specifications and performance are model-specific. Read the monitor comparison or the 2025-model TV comparison alongside reviews of the exact screen you are considering.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.How to decide on a specific screen
- Use a dark scene with subtitles, stars, or another small bright object on a dark background to check both contrast and halos.
- Watch moving content and try the HDR and game modes you expect to use; look for trailing glow, flicker, or lost detail.
- Compare the available dimming settings. Keep the level that improves contrast without making artifacts more distracting. If the display allows it, turning dimming off is reasonable when you prefer the image without it.
- Check independent testing of the exact model. Treat zone count and backlight type as clues, not substitutes for observed performance.
RTINGS’ TV tests examine lighting-zone precision and transitions, while its monitor tests cover contrast, haloing, black crush, transitions, flicker, and settings. These are category-level tests, not a guarantee about every unit, firmware version, or viewing setup.
Quick Recap
Best Value
- QD-Mini LED with Local Dimming Supreme: Combines quantum dot technology with intelligent local dimming to deliver vibrant colors, deeper blacks, and enhanced contrast for an immersive viewing experience.
- Glare Free Ultra: An advanced screen technology that combines premium anti-glare, low reflection, and a wide viewing angle for a glare-free TV viewing experience. Together with eye care technology, including low blue light, flicker free, and true color aid, it provides visual comfort.
- Powered by AI 4K Colour Engine: Every frame is refined with cinematic precision. Born from decades of broadcast expertise, it turns your screen into a window to the creator's vision.
- Dolby Vision & Atmos: Discover how the mesmerizing colors and sharp details of Dolby Vision and the transformative, spatial sound of Dolby Atmos bring you closer than ever to your favorite movies, shows, games, and more. Look for Dolby in all your entertainment.
- Filmmaker Mode: Filmmaker Mode turns off motion smoothing and preserves the original frame rate, color, and aspect ratio. Watch movies exactly as the director intended - no distortion, no artificial processing. Just pure cinema.
Rank #4
- Advanced Mini-LED Local Dimming for Ultra-High Contrast - Experience a dramatic boost in picture precision with Mini-LED backlighting and high-density local dimming zones. Thousands of tiny LEDs independently brighten highlights and deepen dark areas for sharper contrast, reduced light bleed, and more realistic detail in every scene.
- QLED Quantum Color with Wide DCI-P3 Coverage - Enjoy rich, accurate color with QLED Quantum Dot technology, delivering up to 93% DCI-P3 wide color gamut. Combined with local dimming, you get brighter highlights, deeper blacks, and exceptional clarity—perfect for movies, sports, and gaming.
- Ultra-Smooth Motion with Precision Contrast – Advanced MEMC motion processing works in tandem with Mini-LED local dimming to reduce blur and judder in fast-moving scenes while keeping bright highlights tightly controlled. The result is smoother sports and action, sharper moving details, and cleaner contrast with reduced haloing—so every frame stays clear, fluid, and impactful.
- Dolby Vision, HDR10 & HLG for Cinema-Grade Brightness - Upgrade your viewing with Dolby Vision, HDR10, and HLG support. Each frame is optimized for deeper contrast, vivid brightness, and lifelike color, revealing nuances typically lost on standard displays.
- Roku TV, America’s #1 Streaming Platform - Stream 350+ free live TV channels, 1,000’s of Streaming Apps, hit Movies & TV, Music, and Premium channels. Access one of the broadest selections of streaming apps like Netflix, Prime Video, MAX, Apple TV+, Disney+, ESPN+, Hulu, Fox Sports, YouTube TV, Pluto TV, Peacock, NFL for entertainment your way. Plus, enjoy seamless control and casting with Apple HomeKit and AirPlay 2, making it simple to stream content from your iPhone, iPad, or Mac.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
