Viewing angle control unit, substrate assembly of the viewing angle control unit, and display assembly

A display assembly comprising:

• a display screen having an active area for displaying images;
• and
• a viewing angle control unit overlapping said display screen to change a viewing angle of said display screen, and including:
• a first substrate assembly and a second substrate assembly, wherein each of said first and second substrate assemblies includes
• a transparent base substrate,
• a transparent electrode layer that is disposed on said transparent base substrate,
• a conductive terminal disposed on said transparent base substrate, and
• an alignment film that is disposed on said transparent electrode layer;
• a liquid crystal (LC) component disposed between said first and second substrate assemblies;
• and
• a seal component interconnecting said first and second substrate assemblies, and surrounding said LC component;
• wherein, for at least one of said first and second substrate assemblies, said transparent electrode layer includes:
• a first electrode portion aligned with and covering said active area of said display screen:
• a second electrode portion that extends outwardly of said first electrode portion;
• and
• a third electrode portion that is connected to said second electrode portion, that is spaced apart from said first electrode portion by said second electrode portion, that is electrically connected to said first electrode portion via said second electrode portion, and that is to be electrically connected to said conductive terminal for receiving a voltage therefrom,
• wherein said transparent electrode layer has a groove extending along at least part of said seal component,
• wherein said groove is included in the second electrode portion,
• wherein said conductive terminal is in contact with said third electrode portion, and
• wherein said second electrode portion has a sealing region overlapping with said seal component, and said first groove is positioned between said sealing region and said third electrode portion.