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DS Display Expert (Pro) 4.5

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DS Display Expert (Pro) 4.5

Requirements: 2.2+

Overview: This pro version added Polarity inversion, Response time, Noise, Photo(copyrighted), ColorSpace Caculator, Screen filter, compare to lite version




This is a professional display tester/screen tester for Android devices. It has:

1. Multi touch: Test max touch points supported by device;

2. Solid color: red, green, blue, magenta, cyan, white, black, and it supports scrolling to adjust color values;

3. Gray level: 8 levels, 16 levels, 32 levels, 64 levels, 256 levels, red, green, blue gradient (16 levels, 32 levels, 256 levels), and it supports pattern scrolling and scaling; 

4. Contrast ratio: white cube, black cube, white/black(Left/Right, Top/Bottom), white/black bar (legacy), horizontal scrolling to adjust backlight for dynamic contrast ratio test;

5. Colorbar: VGA full range colorbar, ITU.R BT.601 colorbar (100%, 75%), ITU.R BT.709 color bar (100%, 75%), SMPTE colorbar, SMPTE HD colorbar;

6. Geometry: grid+cycles (white, red, green, blue), rect board, rect+cross, cross, cycle, Rect+cycle, rect+X, grid;

7. Dot/Line: dot interlace, dot by space, line by space, color line by space; 

8. ChessBoard: chess board test pattern (including 8x8, 16x16, 32x32, 64x64, 128x128, custom size chess board);

9. View angle: Test horizontal/vertical viewing angle of display;

10. Gamma: Camma test pattern can be used to evaluate gamma value of display, including white, red, green, blue gamma test;

11. Polarity inversion, including point inversion, two-point inversion (horizontal / vertical, odd / even), pixel inversion, dual pixel inversion (horizontal / vertical, odd / even), line inversion, two-inversion (horizontal / vertical, odd / even);

12. Response time, including the moving grating (60Hz/30Hz, a total of 14 different light and dark level test pattern);

13. Noise: Try to fix burn-in problem, with color noise, gray noise, white noise, red noise, green noise, blue noise;

14. Photos: Test display with selected pictures, to see real performance of device (All photos are copyrighted);

15. ColorSpace Calc: To convert color value to different color space, it support: RGBHSL,RGBHSV,RGBHSI,RGBCMY,RGBCMYK,RGBYUV,RGBYIQ,RGBYCbCr(SD/HD,PC/Video),RGBXYZ,RGBYxy,XYZCIE-L*ab,XYZCIE-L*uv,XYZHunter-L*ab,CIE-L*abCIE-L*CH,CIE-L*uvCIE-L*CH. And RGBXYZ support several RGB spec (sRGB(D65), Adobe RGB(D65), SMPTE-C RGB(D65), and etc.);

16. Screen filter: screen filter can be any color and any blend level on the screen, which is better than system brightness (backlight);




1. Add moire test, including rgb-pixel, square, cross, cycle moire pattern;

2. Add blink-bar pattern to contrast test for legacy device;

3. Add dark-level, light-level pattern to gray-level test;

4. Add horizontal scrolling to white-rect, black-rect pattern of contrast test;

5. Fix the issue that no tip message shown when scrolling on black-bar and white-bar pattern;


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