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0.001
0.01
0.1
1.0
0123
4
Cell thickness [μm]
Dark level [%]
SXRD Panel:
Contrast Ratio
4000:1
Contrast Ratio 7500:1
at 50°C
0.5 1.5 2.5 3.5
Contrast Ratio 750:1
Contrast Ratio 75:1
Dark level (left scale) and contrast ratio (right scale) vary dramatically as
the Liquid Crystal layer thickness varies. This graphs shows contrast
ratio of the SXRD panel alone, when measured with a conoscope.
• Spacer-less design. Many LCD panels require spacers in the image area to
maintain a uniform cell gap. Unfortunately, these spacers interrupt the
regularity of the nearby liquid crystal molecules, degrading contrast. The
SXRD panel incorporates a spacer/sealer around the periphery of the live
display area. As a result, the image is entirely free from spacers, to maintain
maximum contrast. In addition, Sony's silicon backplane planarization helps
establish an ultra-flat surface. Together with Sony's spacer/sealer, this
maintains cell gap uniformity to a highly precise ±3%.
Plan view, not to scale, of Sony's 4K SXRD microdisplay panel. By
locating the Sealing/Spacer outside the active picture area, the SXRD
design maintains maximum contrast.
8.5 μm pixel pitch
4096 x 2160
(8.8 million pixels)
Data line driver
Scanning line driver
FPC Pad
Sealing/Spacer Area
Timing controller