A full‐HD (FHD) liquid crystal display TV (LCD‐TV) has been enhanced by increasing the panel's frame rate to 240Hz, and this 240Hz driving technology has been applied to 3D TV. Compared to a 120Hz LCD, the 240Hz LCD has two challenges: 1) half of the available pixel charging time, and 2) three times as many interpolated frames. A new architecture has doubled the available pixel charging time by means of a half‐gate two‐data (hG‐2D) driving scheme and a charge‐shared super PVA (CS S‐PVA) pixel structure. Additionally, a 240Hz ME/MC algorithm has been implemented on the LCD module to convert 60Hz incoming frames into 240Hz frames. Motion picture response time (MPRT) of the new LCD‐TV has been measured as 4.7msec, which is similar to the MPRT for a cathode ray tube (CRT) TV.
Samsung has launched a 70-inch Full HD (1920X1080) LCD-TV panel which, on a commercial basis, is the world's largest size so far. This size is the maximum that can be achieved using a single polarizer sheet. Its features include 600 nits luminance, dynamic control using LED local dimming, 100,000:1 contrast ratio, and a color gamut of 105%. Also, it is the world's first high speed FHD 120Hz frame rate panel, accompanied by a newly developed pixel structure and driving scheme. This totally new driving method concept includes an alternative pixel structure developed from the 1G-2D cell structure that we announced last year. Also, new product and design technology, optimized for larger sized LCD-TV products, was adopted. This technology overcomes severe charging margin requirements, enabling manufacturability and high quality in 46", 52", 57", 70").
Abstract— Samsung has developed a high‐resolution full‐HD (1920 × 1080) 120‐Hz LCD‐TV panel using a novel pixel structure and a motion‐compensated frame‐interpolation (McFi) single‐chip solution. Our latest work includes launch of a 70‐in. full‐HD panel, the world's largest LCD TV in mass production, with a 120‐Hz frame rate. A serious problem involving the charging time margin has been completely overcome through the use of a new alternative 1G‐2D pixel structure and a new driving scheme. Compared with conventional dot‐inversion driving, our new dot‐inversion method, which is a spatial averaging technique, can save power because the column drivers are operated using vertical inversion driving. In addition, McFi, which merges individual ME/MC and timing‐controller (TCON) ICs and memories, has been developed and applied in a mass‐production product for the first time ever. The McFi solution provides 120‐Hz driving with the lowest possible system cost. Motion‐picture response time (MPRT) has been reduced from 1 5 to 8 msec. Moreover, for the case of 24‐Hz film source mode, motion judder has been completely eliminated. As a result, a lineup consisting of 40‐, 46‐, 52‐, 70‐, and 82‐in. LCD‐TV panels with high quality and manufacturability has been made possible.
A touch screen panel (TSP) embedded 12.1-inch LCD employing a standard a-Si:H TFT-LCD process has been successfully developed. Compared with conventional touch screen panels, which use additional components to detect touch events, the new TSP exhibits a clearer image and improved touch feeling, as well as enabling the LCD module to provide the sensing data through the driver ICs with an integrated readout function. Our new internal digital switching TSP can be fabricated with low cost because it does not require any additional components compared to a standard a-S:H TFT LCD.
A novel driving method employing 2-dimensional spatial averaging is proposed. This method successfully eliminates the vertical line artifact caused by luminance difference from unbalanced polarity. This spatial averaging method can secure charging time, minimize driver heating, and achieve higher display quality.
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