Difference between revisions of "Display Technology"

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*(1.19) [http://ieeexplore.ieee.org/iel5/9370/29754/01356551.pdf Takao, Miyasaka, Kawai, Hara, Miyazaki, Kodaira, Tam*, Inoue, Shimoda, ''Flexible Semiconductor Devices: Fingerprint Sensor and Electrophoretic Display on Plastic'', 2004]
 
*(1.19) [http://ieeexplore.ieee.org/iel5/9370/29754/01356551.pdf Takao, Miyasaka, Kawai, Hara, Miyazaki, Kodaira, Tam*, Inoue, Shimoda, ''Flexible Semiconductor Devices: Fingerprint Sensor and Electrophoretic Display on Plastic'', 2004]
 
::EPD driver information and pixel level model
 
::EPD driver information and pixel level model
 +
::Section 3. To compensate for the leakage current, the storage capacitor must be very large; here, the capacitance is 34 pF.
 
*(1.20) [http://ieeexplore.ieee.org.ezproxy1.lib.asu.edu/iel5/16/22079/01027833.pdf?tp=&arnumber=1027833&isnumber=22079 Inoue, Kawai, Kanbe, Saeki, Shimoda, ''High-Resolution Microencapsulated Electrophoretic Display (EPD) Driven by Poly-Si TFTs With Four-Level Grayscale'', IEEE Transactions, August 2002]
 
*(1.20) [http://ieeexplore.ieee.org.ezproxy1.lib.asu.edu/iel5/16/22079/01027833.pdf?tp=&arnumber=1027833&isnumber=22079 Inoue, Kawai, Kanbe, Saeki, Shimoda, ''High-Resolution Microencapsulated Electrophoretic Display (EPD) Driven by Poly-Si TFTs With Four-Level Grayscale'', IEEE Transactions, August 2002]
 
::EPD driven to produce greyscale
 
::EPD driven to produce greyscale

Revision as of 22:17, 24 March 2007

Project Documents

Paper Search

"LCD power model" search on ACM

Display Technologies

General

Liquid Crystal Displays (LCD)

Flexible Displays

Electrophroetic Displays (EPD)

Some current characterization for electrophoretic suspension fluid.
EPD driver information and pixel level model
Section 3. To compensate for the leakage current, the storage capacitor must be very large; here, the capacitance is 34 pF.
EPD driven to produce greyscale

Electro-wetting displays

Organic Light Emitting Diode (OLED)

Display Power

LCD greyscale single pixel power consumption formula
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.

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Last printed: 1.20