Display Technology
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Display Technologies
Flexible Displays
Electrophroetic Displays
Display Power
- LCD greyscale single pixel power consumption formula
- [13](1.2) (13) Aoki, Dynamic Characterization of a-Si TFT-LCD Pixels
- (apparently related) Simrata, Subhasis, Gupta, Gate capacitance characteristics of a poly-Si thin film transistor
- (1.9) Iranli, Lee, Pedram, Backlight Dimming in Power-Aware Mobile Displays
- (1.4) Cheng, Chao, Minimization for LED-backlit TFT-LCDs, 2006
- Addresses independant scaling of three color LED backlights based on image histogram
- (1.7) Zhong, Jha, Graphical User Interface Energy Characterization for Handheld Computers, October 2003
- 3.1: Whenever there is a screen change, the processor generates new data for the changing screen pixels and stores them into the framebuffer. This implies a higher energy consumption with increased temportal changes in the screen. Meanwhile, to maintain a screen on the LCD, the LCDC must sequentially read screen data from the frame-buffer and refresh the LCD pixels even when there is no screen change.
- 3.1: The display itself consists of several parts: LCD power circuitry, a front light, and an LCD. The LCDs used in the systems we studied are color active thin film transistor (TFT) LCDs. In such LCDs, each pixel has three comonents: R, G and B, signifying red, green and blue, respectively. Liquid crystals for each component are independently oriented by two polarizers, which are connected to a storage capacitor. The capacitor is in turn charged and discharged through a TFT to accommodate screen changes. Moreover, the capacitor must be refreshed at a high rate to maintain an appropriate voltage across the polarizers so that the corresponding liquid crystals remain properly oriented.
