A novel adaptive dimming technique with X-Y channels for light emitting diode (LED) backlight system of LCD TVs is proposed. It has matrix structured LED modules with row and column switches to control the brightness of individual division block. It shows local dimming effects such as reduced power consumption and high dynamic contrast ratio with even using much fewer number of LED drivers of proposed method than that of conventional local dimming method. Therefore, low cost and compact design of LED drivers can be achieved. This paper also contains a new adaptive dimming algorithm and image compensation technique for proposed system.
This paper details the low temperature poly‐crystalline silicon oxide (LTPO) thin‐film transistor (TFT) technology development primarily focused on image sticking (IS) and recovery behaviors, the backplane process optimization, which is painstaking multi‐faceted approach from TFT to panel to circuit, in order to ensure display performance and reliability. Palpable understanding on light induced IS and recovery, the dependency of bias layout design and backplane process integration are crucial.
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