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Thread: Hardware Review: Lilliput 659GL-70NP/C/T Surface Wave Acoustic Touschreen Monitor

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    Hardware Review: Lilliput 659GL-70NP/C/T Surface Wave Acoustic Touschreen Monitor


    What is it?

    The Lilliput 659 is a 7" touchscreen monitor which uses Surface Acoustic Wave technology for accurate and precise touchscreen operation.

    The Verdict:

    As beautiful as the display is on the Lilliput 659, it may not be the best bet for every installation. The physical dimensions of the screens bezel and other components means you may very well need more than double din space for adequate installation. If you do have the space needed, the 659 may just be your best bet as its brightness and color saturation is head and shoulders above other factory Lilliput devices to this point.

    See the Lilliput 669HB on the mp3Car Store here.



    What’s in the box?

    As always with Lilliput monitors, everything is included with one minor omission. Connection options include an HDMI to HDMI/USB cable, DVI to HDMI/USB cable, and VGA/Composite cable with sub-connector. Included power options are a 12v cigarette lighter plug and brick-style home power connector. Also included are remote, driver CD, and desk stand. The one omission is the stylus that's typically built into the bezel of the monitor.


    Description:

    The Car PC market has been fed a steady diet of touchscreen options in the last several months. Not only have the major brands like Lilliput and Xenarc done more with their existing product line, the hobby has seen new companies start to promote new products. Though there are many slight differences on specifications between product lines, when it boils down to it, most devices use the same basic screen technology. In the 659GL, Lilliput has changed the game. The 659 uses a different type of touchscreen technology, creatively named "surface wave acoustic" (SAW). This technology isn't new by any means, but this is the first iteration we've seen in the 7-inch touchscreen genre. Surface wave acoustic touchscreens send ultrasonic waves constantly through the screen surface. When a user presses the screen, the wave is interrupted a touch event is sent to the controller for processing. Science aside, the surface wave technology in the Lilliput 659 allows for precise touchscreen presses, higher light transmission, and a sharper, more saturated image.


    Simply put, the image quality on the Lilliput 659 is fantastic. The colors are rich and images are sharp. Though the nit rating remains at 450, the light transmission the SAW touch panel allows makes the screen appear transflective. The glass is still glossy, but its mitigated by the amount of light it passes through. This benefit also allows for a extremely larger viewing radius when compared to resistive touchscreen devices.


    Equally as important to the display of the touchscreen is the response, and the Lilliput 659 comes through in this regard too. The SAW touchscreen is harder than the resistive variants, and this results in a surer button press. The Lilliput 659 eliminates the mushiness, giving users greater confidence in a press without needing the eyes fixated on the screen. I did note that it's harder to get a response on the outer 1/4 inch of the screen, but I'm not sure if this is a problem with my test unit or with all of the 659's.

    This small problem leads me to a larger gripe I have with the Lilliput 659. The bezel on this device when compared with any other 7" touchscreen available today is huge. Anyone looking to install this in a standard double din enclosure may encounter a problem getting it to fit. I'm not sure if the controller boards inside require the larger bezel, but its definitely something to take note of prior to hacking away at your dashboard. Check out my video comparing the bezel size with a Lilliput 669.



    The Positive:

    • Huge leap in image quality from the SAW touchscreen
    • HDMI, DVI, VGA, and Composite connections available
    • Accurate and satisfying touchscreen feedback
    • Auto-On still available (via factory menu)

    The Negative:

    • Bezel size may prohibit double din installation for some
    • Missing auto composite switch wire


    The Verdict:

    As beautiful as the display is on the Lilliput 659, it may not be the best bet for every installation. The physical dimensions of the screens bezel and other components means you may very well need more than double din space for adequate installation. If you do have the space needed, the 659 may just be your best bet as its brightness and color saturation is head and shoulders above other factory Lilliput devices to this point.

    For more specifications on the Lilliput 659 click here
    For more pictures of the Lilliput 659 click here


  2. #2
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    I suppose if you were wearing gloves the touch-screen would function, correct? I think in the car this is a big plus.

    I also see that the store advertises this as dust and waterproof. Typo or comedy?

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    Maximum Bitrate tft_lcd_org's Avatar
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    The unit is sealed to IP65 standards. It is dust and water tight.

    This monitor is really designed for commercial use, like on a CNC, or processing equipment. It was not designed for car use per se, however if you want a 10" sized 7" monitor in your car.........

    SAW will work with a gloved hand, but on a 7" screen @ 800x600 you might not be that accurate with a glove.

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    Quote Originally Posted by tft_lcd_org View Post
    The unit is sealed to IP65 standards. It is dust and water tight.

    This monitor is really designed for commercial use, like on a CNC, or processing equipment. It was not designed for car use per se, however if you want a 10" sized 7" monitor in your car.........

    SAW will work with a gloved hand, but on a 7" screen @ 800x600 you might not be that accurate with a glove.


    are you sure the touchscreen is also sealed?

    Quote Originally Posted by SAW explanation
    Compared to Resistive and Capacitive technologies, SAW technology provides superior image clarity, resolution, and higher light transmission. Because the panel is all glass, there are no layers that can be worn, giving this technology the highest durability factor and also the highest clarity. Disadvantages of Surface Acoustic Wave (SAW) technology include the facts that the touch screen must be touched by finger, gloved hand, or soft-tip stylus (something hard like a pen won't work) and that the touchscreen is not completely sealable, can be affected by large amounts of dirt, dust, and / or water in the environment.
    from here

    and according to this 22" SAW screen, i bet that the reason for the huge bezel on the lilliput is a large control board, and not due to the t/s tech..

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    If I get approval ill open it up and get pics of the controller board and other associated gibblets
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  7. #7
    Maximum Bitrate tft_lcd_org's Avatar
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    Yes, the TP is sealed.

  8. #8
    Maximum Bitrate tft_lcd_org's Avatar
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    Here is the approx. outline of the TP.
    Attached Images Attached Images  

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