Difference between revisions of "Display Technology"
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*[http://delivery.acm.org.ezproxy1.lib.asu.edu/10.1145/960000/951742/p232-zhong.pdf?key1=951742&key2=9737552711&coll=portal&dl=ACM&CFID=10949569&CFTOKEN=52685087 Zhong, Jha, Graphical User Interface Energy Characterization for Handheld Computers, October 2003] | *[http://delivery.acm.org.ezproxy1.lib.asu.edu/10.1145/960000/951742/p232-zhong.pdf?key1=951742&key2=9737552711&coll=portal&dl=ACM&CFID=10949569&CFTOKEN=52685087 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. | ||
Revision as of 14:20, 1 March 2007
Contents
Paper Search
"LCD power model" search on ACM
Display Technologies
Flexible Displays
Electrophroetic Displays
Display Power
- LCD greyscale single pixel power consumption formula
- (13) Aoki, Dynamic Characterization of a-Si TFT-LCD Pixels
- Addresses independant scaling of three color LED backlights based on image histogram
- 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.
