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Samsung Syncmaster 152T 15inch TFT LCD Display

Samsung Syncmaster 152T 15inch TFT LCD Display - PCSTATS
Abstract: The display is so thin that it at first appears as though a notebook has mistakenly been left in the carton.
 81% Rating:   
Filed under: Monitors Published:  Author: 
External Mfg. Website: Samsung May 18 2002   Max Page  
Home > Reviews > Monitors > Samsung 152T

TFT Display Evaluation Notes

PCstats TFT Display Evaluation Criteria:

We evaluate the quality of TFT displays with the help of a program called Nokia Monitor Test. The software application displays a range of colours and test patterns that can help diagnose just about any visual problems or defects a TFT display may contain.

It can also be a very useful tool for properly adjusting a display to the optimal settings. The software consists of eleven tests which can be run in steps as adjustments are made to the OSD. As the tests are run we look for the following problems, only one of which should be inoperable (broken pixel).

  • Broken Pixels: What we class as a 'broken pixel' can fall under any one of the following circumstances: Pixel always on (any colour), pixel always off, pixel unable to display a shade (red, green, blue, black, white), pixel shown colour gradient.
  • Pixel Clock: If the number of dot clocks within one horizontal synch are not properly configured the screen will appear to drift or vertical stripes may be generated. This should be correctable by the on screen menu.
  • Phase: If the phase of the display data and dot clock are not correctly tuned the screen can flicker, or text be displayed blurry. For example text may appear dithered, or when looking at a test pattern of a one-pixel black, one-pixel white checkerboard pattern the pattern may be distorted. This should be correctable by the on screen menu.
  • Response Time: We look for any streaking associated with moving a full page of text up or down quickly. Displays with slower refresh rates tend to show some degree of image streaking or text discoloration which can be distracting.
  • Stand Stability: TFT displays are fragile components and the stand should offer adequately stable support as well as be easily adjustable.

    We deduct marks for quality control if there are any predominant broken pixels in a display. While many manufacturers may consider a few broken pixels acceptable, we believe the high cost of TFT displays should translate into a clear and unblemished image.

  • Display Test System Configuration:
    Video Card: ATI Radeon 8500
    Operating System: MS Windows 2000
    Display Settings: Color Temp: 6500 Kelvin
    Resolution: 1024x768 pixels
    Frequency: 60Hz
    Colour: 32 Bit

    LCD Display Test Overall Test Notes and Observations
    Geometry: Pass

    Excellent picture geometry at the 152's native 1280x1024 resolution. The image is very sharp. At 800x600 resolutions the dithering is good, and lines are not overly blurry.

    Brightness and Contrast: Pass

    Good shading in the 20% to 100% range. It is difficult to see major changes in shading in the 1%-4% range, but the rest of the scale transitions well. There is some slight luminance around the edges of the panel (just visible in a dimly lit room) from a head on view of a pure black screen. This is inline with the variations between LCD panel to panel and not detrimental.

    Colour: Pass

    The white test screen is brighter than the CRT monitor I am using to write this so readability in well-lit rooms should remain excellent. Each of the three colour test screens are nice and vivid, and there are no traces of broken or damaged pixels what we can spot.

    Convergence: Pass

    The test grids in RGB illustrate the worst case situations when different coloured pixels must work closely together, and since they comprise different parts of a pixel they do not line up exactly.

    Focus: Pass

    Excellent at 1024x768. All test patterns are clearly visible and defined in both the horizontal and vertical axis.

    Resolution: Pass

    Resolution was also excellent at the native 1280x1024 resolution. Image dithering at lower resolutions offers a slightly blurry version which is not going to put people off from using lower screen resolutions to increase font sizes however.

    Moire: Pass

    Excellent, all test patterns were displayed properly and without interference, walking lines, or scatter. Properly adjusting the image sharpness is critical in this area, as the auto adjust does not always update this setting under an analog signal.

    Other Evaluation Notes:

    Very Good

    With a pixel refresh rate of 25ms the 152T is inline with other LCD offerings making it good for gaming, but not as fast as a CRT. LCD displays tend to have a better following the office environment where eyestrain is generally a lot lower. The viewing angles on this display are a bit short compared to recent 170/170 monitors so we are going to take that into consideration (especially with the high degree of tilt). Adjusting the display itself is straight forward and we had no problems getting it into a comfortable viewing position. Luminance bleed around the edges of the LCD glass exists in some level on just about every panel we have reviewed, and the 152T falls in line just the same.

    *Note: all criteria on this evaluation sheet are graded as either Pass, Satisfactory, or Fail.

    < Previous Page © 2017 PCSTATS.com Next Page >

     

    Contents of Article: Samsung 152T
     Pg 1.  Samsung Syncmaster 152T 15inch TFT LCD Display
     Pg 2.  More views of the displays
     Pg 3.  — TFT Display Evaluation Notes
     Pg 4.  Final Conclusions

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