Source driver
AssigneeRohm Co., Ltd.
InventorHiroyuki Inokuchi
Life of this patent
Estimating the term…
Abstract
A source driver drives data lines of a liquid crystal panel in an inversion driving manner. The source driver includes multiple charge averaging switch groups in increments of pixel colors. Each charge averaging switch connects a pairing of the nearest two corresponding data lines assigned to the same color. These two paired data lines are driven with opposite polarities. In many cases, the nearest pixels assigned to the same color have the same gradation. Thus, by performing a charge averaging operation for each of the associated data lines that correspond to such pixels, such an arrangement provides a source driver having the advantage of low power consumption.
Claims10
A source driver configured to drive multiple data lines of a liquid crystal panel in an inversion driving manner, the source driver comprising:
- multiple output terminals severally connected to the multiple respective data lines;
- multiple driver amplifiers severally provided to the multiple output terminals, and each configured to supply a driving voltage to the corresponding data line;
- multiple charge averaging switch groups provided in increments of pixel colors;
- and
- a controller configured to control the connection states of the multiple charge averaging switch groups,
- wherein the multiple charge averaging switch groups severally include multiple charge averaging switches arranged between the multiple data lines assigned to a corresponding pixel color.
Dependencies are inferred from the claim text.