Binder solution for all-solid-state battery and all-solid-state battery having the same and having uniform binder distribution

A binder solution for an all-solid-state battery, comprising:

• a binder including a fluorine-based polymer;
• a first solvent;
• and
• a second solvent,
• wherein a Hansen solubility index difference value (Ra) between the fluorine-based polymer and the first solvent is about 10 or less,
• wherein a Hansen solubility index difference value (Ra) between the first solvent and the second solvent is about 9 or less,
• wherein a ratio (C/D) of a boiling point (C, [° C.]) of the second solvent at 760 mmHg to a vapor pressure (D, [mmHg]) of the second solvent at 25° C. is about 90 or more and less than about 3,000, and
• wherein the second solvent comprises at least one of butyl butyrate, hexyl butyrate, benzyl acetate, pentyl butyrate, butyl benzoate, or any combination thereof.