Composition for forming silica layer, method for manufacturing silica layer, and silica layer

A composition for forming a silica layer, comprising:

• a silicon-containing polymer, and
• a solvent compound represented by Chemical Formula 1:
• wherein, in Chemical Formula 1,
• L1 and L2 are each independently a single bond or a C1 to C5 alkylene group,
• m and n are each independently integers of 0 to 2, and
• X1 and X2 are each independently a C1 to C10 alkyl group,
• provided that when m and n are both zero (0), at least one of X1 and X2 is a C3 to C10 iso-alkyl group or a C4 to C10 tert-alkyl group.