Sony's new generation of "brightera" chip technology is applied to projectors
the inorganic alignment film "brightera" chip technology developed by Sony has long been commercialized on projectors. Projectors using "brightera" chip can achieve higher brightness and contrast, better picture uniformity and stability, and higher resolution. The two new vpl-f700hl and vpl-f400h high-definition engineering projectors launched at the end of March adopt the new generation of "brightera with long lasing optics" chip technology of 0.95 inch and 0.76 inch. The brightness can achieve 7000 lumens and 4300 lumens, and the resolution can reach 1920*1200
the new generation of "brightera with long lasing optics" chip technology not only uses inorganic alignment films to improve the light resistance of liquid crystal panels, but also uses polarizers of inorganic materials in optical systems, making projector products more stable
"sxrd" and "brightera" structure comparison
what is "brightera"
"brightera" is the latest high-temperature polysilicon liquid crystal panel chip with micro mirror array developed by Sony, which adopts inorganic alignment film
this inorganic alignment film and new liquid crystal material were first used by Sony on LCOS type "sxrd" AV projectors that can achieve high-quality pictures and high heat resistance, and now have been mass-produced
traditional high brightness projectors usually use organic alignment films. However, with the recent market trend of projectors pursuing high brightness, market demand has accelerated the use of projectors to the direction of high brightness and small body size
in the face of this market trend, to better meet the needs of users for this kind of highlight projector, Sony applied the inorganic alignment film on "sxrd" and the new liquid crystal material technology on the high-temperature polysilicon TFT liquid crystal panel chip, as well as the optimization of design to achieve high brightness. This makes the application of "brightera" LCD chip a great market success
"brightera" main features
1 The use of inorganic alignment film to improve the photoresist to achieve high brightness
the substantial improvement of the photoresist allows the use of brighter light sources, especially those of materials whose shape is not convenient for hardness experiments, while achieving higher brightness. Moreover, the use of inorganic alignment membrane improves the stability of the chip
2. The new drive system and trimming micromachining technology achieve high aperture rate and high picture quality
the new double speed inversion drive system expands the effective aperture area of the liquid crystal by suppressing the nonuniformity of the liquid crystal array caused by the voltage inconsistency between pixel lines. In addition, the edge micromachining technology reduces the width of TFT electronic circuit. Compared with the traditional method, this technology can increase the opening rate by 20%. The double speed drive can halve the leakage of TFT elements when illuminated by strong light, and further improve the flash of details
3. The all black mode improves the contrast
the all black mode enables the liquid crystal molecular array to display black, realizing high contrast
"brightera" technical support
inorganic alignment film is used to improve the stability of the chip
the light of ordinary high brightness projectors is irradiated from the high-pressure mercury lamp, including strong short wave ultraviolet light. Ordinary projectors use UV filters to eliminate UV light, but there is still very little UV light that can penetrate the past. The inorganic alignment membrane used by "brightera" is not easy to absorb this small part of unfiltered ultraviolet light, and the use of inorganic alignment membrane can make the molecules of the alignment membrane more cohesive. This enables the projector to have very good stability under strong light for a long time
this technology makes it easy to distinguish between high brightness and class 1. Projectors can have high brightness light input and output without using large-size LCD panels. In addition, the traditional organic alignment membrane is arranged by friction on the membrane surface, while the inorganic alignment membrane or the structure of the membrane can be easily formed. In this way, the process of physical alignment can be eliminated, and excellent image quality can be obtained
"increase photoresist through inorganic alignment film"
new drive system and edge cutting micromachining technology
in order to prevent image burns, the pixel potential polarity of LCD cells is usually reversed. The traditional LCD uses a horizontal inversion drive system to invert the polarity of the pixel potential of each pixel line, which is most suitable for 60 Hz drive. In this case, the horizontal electronic domain is generated between the pixel electrodes. In this way, the liquid crystal array is destroyed, so the liquid crystal array cannot obtain a white display, and the light transmission is also weakened
on the contrary, "brightera" uses a single domain inversion drive system. "Wang Xianhong said that the polarity of the pixel potential in each domain is set, which reduces the electronic domain between the pixel electrodes. Therefore, an effective liquid crystal arrangement can display white, and light can also be well transmitted
in addition, compared with the traditional method, the edge cutting micromachining technology reduces the TFT element area by about 70%, reduces the width of the electronic circuit, and increases the opening rate by nearly 20%
"comparison of LCD drive systems"
"edge micromachining technology"
all black mode
traditional high brightness projectors use all white mode, which is conducive to increasing brightness. This mode uses liquid crystal array to display white. When black is displayed, the liquid crystal must be controlled by an electronic field into the liquid crystal cell. In this way, the liquid crystal molecules cannot be completely arranged on the surface of the alignment film, so the light leakage and low contrast will be caused by light scattering
"comparison display mode"
on the other hand, the all black mode used by "brightera" makes the LCD array display black. In this way, there is little light scattering, so there is little light leakage and good contrast
in addition, in order to control the liquid crystal array more efficiently, even when displaying white, the inorganic alignment film and the new liquid crystal design have been optimized after applying the electronic domain, and at the same time, the brightness has been increased. (end)
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