18625158. Shared Components in Pulsed Electronic Displays (Apple Inc.)
Organization Name
Inventor(s)
John T. Wetherell of San Jose CA US
Hasan Akyol of Los Altos CA US
Mahdi Farrokh Baroughi of Santa Clara CA US
This abstract first appeared for US patent application 18625158 titled 'Shared Components in Pulsed Electronic Displays
Original Abstract Submitted
Electronic displays may display a frame of image content by controlling emissions of display pixels. To this end, the electronic display may include one or more column drivers that drive the display pixels to emit light. The column drivers may be collectively compensated by common components, such as a single sampling capacitor and/or an analog buffer, which may reduce a size of the column drivers. In another example, the column drivers may include cascode transistors with increased width-to-length ratio and share a common n-well. Each transistor may be compensated by a respective capacitor, however a size of each sampling capacitor may be reduced, thereby reducing a size of the column driver. Moreover, a size of a level shifter may be reduced by operating transistors of the level shifter with sub-threshold voltage. Furthermore, a resolution of the electronic display may be improved by extending a pulse of an emission clock signal.