Abstract: An array substrate includes a first electrode, scanning lines extending along a first direction, data lines, and common signal lines. The data lines and the common signal lines extend along a second direction. The first electrode includes a first and a second sub-electrode. Each data line is disposed between two common signal lines. Two scanning lines, two common signal lines, and a data line define a first and a second sub-pixel area. The first and the second sub-electrode are disposed within the first and the second sub-pixel area respectively. The first sub-electrode includes a first main portion disposed close to a common signal line and first branch portions spaced along the second direction. A first space is defined between two adjacent first branch portions. Ends of the first branch portions are connected to the first main portion. Another ends of the first branch portions are spaced with a first space.

Abstract: Production of metallic sodium and potassium by reaction of their hydroxides or carbonates with carbon. The carbon may be produced in situ by pyrolysis of a pyrolyzable carbonaceous material. There are further disclosed a process and installation for performing the production while using solar energy.