Pixel structures

#Some electro-optical displays, such as electrophoretic displays (e.g., sometimes referred to as electronic paper), may use fluids having electrically charged particles therein, such as electrophoretic inks, to create images. For example, the electrically charged particles may be electrically charged pigment particles.

#In some displays, the electrophoretic ink may be contained between a pair of conductors, e.g., electrodes, one or both of which may be substantially transparent. When a voltage is applied across the conductors, the particles are drawn to the conductor having the opposite charge from the particles. For example, this movement may be referred to as electrophoresis.

#Some electrophoretic displays may include a plurality of pixels for forming images on a viewing side thereof. Each pixel may be a closed container that contains electrophoretic ink between the pair of conductors.

#FIG. 1 is a perspective view of a pixel structure, according to an embodiment.

#FIG. 2A is a perspective view, showing discrete protrusions on ribs of a pixel structure retaining adhesive, according to another embodiment.

#FIG. 2B is a perspective view, showing a continuous protrusion retaining adhesive on a ribbed structure of a pixel structure, according to another embodiment.

#In the following detailed description of the present embodiments, reference is made to the accompanying drawings that form a part hereof, and in which is shown by way of illustration specific embodiments of the disclosure which may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the subject matter of the disclosure, and it is to be understood that other embodiments may be utilized and that process, chemical, electrical or mechanical changes may be made without departing from the scope of the present disclosure. The following detailed description is, therefore, not to be taken in a limiting sense.

#Whenever used herein, terms such as upper or lower top or bottom refer to relative placements in the frames of reference of the figures and do not require any particular absolute orientation.

#FIG. 1 is a perspective view of a portion of a pixel structure 100 that may form a portion of a display, such as an electro-optical display, e.g., an electrophoretic display. Pixel structure 100 may include a plurality of ribs 110. A plurality of discrete protrusions 120 may protrude from a surface 125, e.g., an upper surface, of each of ribs 110. The plurality ribs 110 may define a plurality of open-ended compartments 130 (e.g., that may be referred to as wells) in pixel structure 100, where the compartments 130 respectively correspond to pixels of the display and where the ribs 110 may form sidewalls of the respective compartments 130. For example, a pixel may include one or more compartments 130. As such, pixel structure 100 may constitute a single pixel having a plurality of compartments 130 for some embodiments.