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    D40u-D1
    A 40-inch LCD Ultra HD TV with an LED backlight with local dimming from Vizio, with 2160p resolution, a 240-hertz refresh rate, five HDMI inputs, and one component-video input.
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    Description
    A 40-inch LCD Ultra HD TV with an LED backlight with local dimming from Vizio, with 2160p resolution, a 240-hertz refresh rate, five HDMI inputs, and one component-video input.
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    We investigate, research and test so you can choose with confidence.

    Become a member to compare products & get access to ratings.

    We investigate, research and test so you can choose with confidence.

    Become a member to compare products & get access to ratings.

    We investigate, research and test so you can choose with confidence.

    CR Expert Take

    How did it perform in our owner surveys and expert lab testing?

    Overall Score

    The Overall Score for this model incorporates our expert lab test results, as well as ratings for that brand’s reliability and owner satisfaction from our annual product owner survey of members.
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    Current Range of Tested TVs
    What goes into the Overall Score?

    OWNER SURVEYS

    Learn More
    Predicted Reliability
     /  5
    Owner Satisfaction
     /  5
    HD picture quality
     /  5
    UHD picture quality
     /  5
    HDR
     /  5
    Viewing angle
     /  5
    Motion blur
     /  5
    Sound quality
     /  5
    Versatility
     /  5
    Data privacy
     /  5
    Data security
     /  5
    Ultra HD Picture Quality
     /  5
    Ultra HD performance
     /  5
    Color
     /  5
    Screen size (in.)
     /  5
    TV resolution type
     /  5
    Display type (Backlight)
     /  5
    Internet-enabled
     /  5
    Energy cost/yr. ($)
     /  5

    Detailed Test Results

    PICTURE QUALITY. It did an excellent job displaying the finest detail of HD content, though we noted some added edge enhancement processing which we could not turn off, but it wasn't distracting. Color accuracy was excellent, so colors, especially flesh tones, looked very natural and lifelike. Contrast—the difference between the darkest blacks and brightest whites—was good, so images had depth and dimension, typical of most models we test. The brightness level was good, making it a suitable choice for most rooms. Black levels are excellent, with help from Vizio's Active LED Zones, a local dimming feature, delivering very deep blacks that enhances contrast in dark scenes. In scenes with subtly shaded light-to-dark areas, such as a sky during sunset, the model did a very good job producing a smooth transition without distinct, coarse bands. The deinterlacing and film mode operations were excellent on HD content; there was little or no trace of jaggies on the edges of objects for video and film-based 1080i video content, such as from cable.

    VIEWING ANGLE. This Vizio has a narrow viewing angle overall, below-average performance among TVs for this attribute. Only those seated directly in front of the screen will see the best picture quality. When we viewed the TV from the sides image quality degraded significantly. The picture showed a moderate loss of color, so flesh tones looked a bit washed out, along with a moderate color shift. Black levels visibly brightened, reducing contrast especially on dark scenes. When viewing the image from above or below eye level to the screen, the vertical viewing angle was good. The picture showed some change in color, contrast, and black level.

    ULTRA HD PERFORMANCE. Overall, falls short. This Vizio UHD TV delivers very good 4K picture detail, along with very good HD-to-UHD upconversion. All native 4K content we played on this model, including movies and test videos was presented in 4K detail when played back via the TV's HDMI input, but we did note some reduction of fine detail such as on skin texture when compared to our 4K reference TV, possibly due to some noise reduction processing, but this was quite subtle and shouldn't be a concern. Unusually, we couldn't display an image on the screen from our Samsung 4K Blu-ray player, but had no problem with play back from our Sony 4K media player. This model also supports video streaming of 4K programs via Netflix, using SmartCast, and again image detail was generally fine but texture was slightly compromised as noted previously, and we noted a touch of added edge enhancement. We could not stream 4K content via YouTube. Using the TV's USB port, we were not able to play back 4K videos stored on a flash drive which were encoded in the HEVC,MP4 or VP9 format. This TV does not support HDR (high dynamic range). With photo play back, high-resolution images were unfortunately downscaled to lower 1080p resolution, not taking advantage of the display's detail potential. With regular HD content, the TV's HD-to-UHD upconversion processing was very good, with edges along diagonals of image content showing very slight jaggies, just short of the best we've seen. Three of the TV's five HDMI inputs comply with the latest HDCP 2.2 copy protection specification, but only one of those three is HDMI 2.0 compatible and able to support play back of 4K video at 60Hz. These specifications are required for compatibility with 4K movie play back devices such as a 4K Blu-ray player.

    MOTION BLUR. This Vizio TV has good motion performance, with some blurring on our motion tests, thanks to Vizio's "Clear Action". This feature is designed to reduce motion blur, a shortcoming of most LCD displays.

    SCREEN REFLECTIVITY. Though not as mirror-like as on some models, this screen surface is glossy and therefore susceptible to reflections from a nearby lamp or window. It does a good job reducing glare from ambient light and maintains contrast in a brighter room environment.

    SOUND QUALITY. This model has fair sound quality with below average performance. It's acceptable for typical programming, but shortcomings become obvious with movie soundtracks and music. With movies, dialog was generally clear and remained well balanced with respect to background music and other sounds. Bass was lacking, and treble was nicely detailed, while the overall sound was closed in. The speakers produced a good volume so this model should play sufficiently loud in typical room environments, though sound quality degraded at the highest volume settings. Also, at higher volume, dynamic compression kept the sound from distorting, but also limited the clarity of peaks in loudness, which can be distracting on some audio content. If sound quality matters to you, you might want to add a soundbar or other external speaker system.

    EASE OF USE. Overall, it was fairly easy to setup and OK to do routine things. On first power up there is an on-screen guide that helps you through setting up the TV.

    STAND ASSEMBLY. The TV's base does not come pre-attached, so some assembly is required. Mounting the support stand to the TV is straightforward, though the stand requires the assembly of one part before mounting. The TV's stand extends to the far ends of the display, which means the table top you'll be setting the TV on will need to be at least as wide as the display itself.

    INTERNET FEATURES. This TV provides advanced Internet capabilities via its "Vizio Internet Apps Plus" portal with access to a library of applications. Movie streaming services include: Netflix, Amazon, Hulu Plus, Vudu, YouTube.

    CONNECTIONS. This model has five HDMI inputs—one supports MHL (Mobile High-definition Link), one "component/composite shared" input (which means you can only use one type or the other at a time). It also has one USB port, an optical digital audio out, an Ethernet port. WiFi wireless networking. DLNA, to access files within your home network. Casting, to control the TV from a smartphone that has the suitable app installed. The cable connections on the rear panel are recessed with side or bottom-facing ports, so wires don't protrude beyond the display's depth.

    INCLUDED IN THE BOX. A quick start guide. An electronic manual in the TV's menu. A remote control with batteries. No printed manual is included.

    ABOUT ULTRA HD TESTING: We test UHD picture quality using 4K movies, videos, photos, and test patterns to confirm these displays deliver performance to this format's full potential. We check the TV's ability to reproduce 4K image detail, as well as high dynamic range (HDR) for TVs that support this capability. Image quality is tested using a 4K movie player connected to the TV's HDMI input, as well as from files stored on flash drive plugged into the TV's USB port. We also check the quality of 4K streaming from Netflix or YouTube (if the service is supported by the TV), and how well the TV can upscale HD movies to the display's higher UHD resolution while keeping artifacts such as "jaggies" along the edges of image content to a minimum. The best UHD TVs, and HDTVs, present high fidelity images that reveal the full quality of the best source content without degradation.

    About

    The Vizio D40u-D1 is a 40-inch LCD Ultra HD TV with a native resolution of 3840x2160 (2160p). It has full-array LED backlighting. Rather than the basic 60Hz, it has a faster 240Hz frame rate, a feature designed to reduce motion blur.

    It is Internet-enabled and can access online content, including movie streaming and other services. The TV includes an Ethernet jack allowing for a wired connection to your home network. It is also WiFi capable, so you can connect it to your home network wirelessly. It is DLNA certified, so you can view digital photos stored on a compatible computer, phone, or other mobile device also connected to your home network.

    This TV has five HDMI inputs, and one component-video input which also doubles as a composite-video input. It also has one USB port, which may be used to play media--photos, videos, and music--stored on a flash drive.

    The Vizio D40u-D1 measures 23.46 inches high by 35.97 inches wide by 8.27 inches deep, including its base. The panel itself is 2.68 inches thick including any protrusions, and the screen has a glossy finish. The bezel framing the screen is gloss black.

    The warranty on this model covers parts for 12 months and labor for 12 months.

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