STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT

Not Applicable.

INCORPORATION-BY-REFERENCE OF MATERIAL SUBMITTED ON A COMPACT DISC

Not Applicable.

BACKGROUND OF THE INVENTION

Technical Field of the Invention

This invention relates generally to touchscreens and displays and more particularly to touchscreen displays that operate both touch and display operations concurrently and/or simultaneously.

Description of Related Art

Touch controller functionality has been integrated into a flat panel displays (aka In-Cell or On-Cell) in order to minimize the number of layers, assembly steps, and cost typically required to add external touch functionality to a flat panel display. This combination of touch and display functions within the flat panel display itself generally reuses at least some of the conductive pathways of the display to provide touch sensor functionality.

For typical in-cell configurations, the two different functions, namely, display control and touch sensing, co-exist by alternating display and touch controller operations. The prior art switches between operations of the touch controller and the display. For example, the display driver operations are paused for a short period of time so that the touch operations can be conducted. Among other reasons and because of various deficiencies of the prior art, this is performed because the signals generated by respective display control and touch sensing operations interfere with the normal operations of each other. For example, the ‘noise’ from the display operations generally overwhelms the signal processing capabilities of traditional touch controllers. Conversely, signals from the touch controller transmitted during normal LCD controller operations would alter the visible output of the LCD display. Therefore, in order to provide both capabilities integrated into a display, prior art devices allow only one of the respective display control and touch sensing operations to operate at a time. There continues to remain significant room for improvement in the art of touchscreens and displays.

