Sony SRX-R210 - Manual (Page 9)

Technological Features
9
In conventional Vertically Aligned Liquid Crystal systems,
a thin cell gap could not be achieved. Sony has overcome
this difficulty through the use of Sony’s innovative planarisation
technology in the silicon backplane structure and an
advanced Silicon wafer-based assembly process.
The SXRD device also adopts a structure that does not use
“spacers”. These are columns found in conventional reflective
liquid crystal devices to maintain a constant gap between the
liquid cell floor and the top of the device. Spacers tend to
both scatter and reflect light, which can impair high-contrast
pictures. In the spacer-less SXRD device, these artifacts are
eleminated.
Short Response Time
The thin cell gap structure in SXRD devices also contributes
to an ultra-fast response time of 5 milliseconds. The SXRD
device reacts promptly to an instantaneous change of
picture content, enabling it to display a smooth motion.
Consequently, the SRX-R220 and SRX-R210 virtually eliminate
motion blur; a particularly significant benefit for visual content
that includes fast-moving objects.
Reliable Imaging Device
The SRX-R220 and the SRX-R210 use a high-power, bright lamp.
As a result, special attention has been paid to the reliability of
the SXRD device. The inorganic materials utilised for the align-
ment layer of the SXRD device are resistant to deterioration or
deformities that could occur due to the intense heat and light
generated by the powerful lamp system.
Vertically Aligned Liquid
Crystal System
In every type of projector system, displaying absolute black is
a major requirements in order to achieve a high contrast ratio.
In other words, the contrast ratio of a projector depends on
how effectively the light from the source can be blocked so it
does not leak through the imager.
All Liquid Crystal Display (LCD) devices control the amount of
light being projected by applying an electric field to the liquid
crystal layer. In typical LCD devices, black is produced when
an electric field is applied across the liquid crystal cell layer.
However, molecules near the surface of the glass substrate
may not be accurately controlled due to the influence of the
alignment film. This is not an issue for bright images. However,
when displaying dark images, light may tend to leak from the
LCD device, resulting in a creamy black instead of a deep
black.
The SXRD device does not exhibit these characteristics. This is
because it utilises a Vertically Aligned Liquid Crystal system
which displays black when the electric field is not applied and
because all molecules are in the correct alignment, the
polarised light alignment is also optimised. The direct result
is a far deeper black level, leading to a high contrast ratio.
Thin Liquid Crystal Cell Gap
Another important enabling factor of high contrast is the
SXRD device’s ultra-thin cell gap of less than 2 micrometres.
In addition to their ultra high resolution and high contrast performance, the SXRD devices used in the
SRX Series projectors have the following remarkable technological features:
Glass Substrate
Thin Cell Gap (2.0 µm) Space-less
• Short reponse time < 5 msec
• High Device Contrast ratio 4000:1
Narrow Inter-Pixel
Spacing (0.35 µm)
• High fill factor 92 %
• High reflectivity
Inorganic Alignment
Layer
• High reliability
Aluminium Pad
Light
Silicon Backplane
Vertically Aligned
Liquid Crystal
Hight-Density Pixel Pitch 8.5 µm
• 4K x Full HD
(4096 H x 2160 V pixels)
Silicon X-tal Reflective Display
(SXRD) imaging device
The SXRD device used by the
SRX-R110CE and SRX-R105CE
is a 1.55-inch* Liquid Crystal on
Silicon-based imager developed
using leading-edge manufactu-
ring technology. High quality,
accurate visuals are created
using this brilliant imaging device.
* Measured diagonally.
Ultra High resolution 4K
Sony original SXRD display devices deliver the
exceptionally high resolution of 4K (4096 H x 2160 V
pixels which is more than four times as many pixels
as full HDTV (1920 x 1080, 16:9 wide screen format).
The SXRD device helps to achieve this high picture
quality by incorporating nearly 8.85 million pixels
per imager at a narrow pitch of 8.5 microns.
These high-density pixels enable an outstandingly
high resolution which are a quarter of the size of
pixels projected using typical 2K and HD.