Thin film battery having improved efficiency of collecting electric current

A thin film battery, comprising:

• a base substrate;
• a cathode current collector pattern on the base substrate;
• an anode current collector pattern on the base substrate electrically separated from the cathode current collector pattern;
• a cathode pattern on the cathode current collector pattern;
• an electrolyte pattern on the cathode pattern, wherein the electrolyte pattern does not overlap the anode current collector pattern in a thickness direction of the substrate, wherein the cathode pattern is not fully covered the electrolyte pattern, and wherein the cathode current collector pattern does not contact with the electrolyte pattern;
• and
• an anode pattern on the electrolyte pattern, wherein the anode pattern having a projection extending beyond the electrolyte pattern, the projection configured to electrically connect with the anode current collector pattern,
• wherein at least one pattern of the cathode current collector pattern or the anode current collector pattern comprises a non-noble metal based alloy,
• wherein the cathode current collector pattern does not overlap the anode current collector pattern in the thickness direction of the substrate,
• wherein the cathode current collector pattern comprises two sides each of which faces with a side of the anode current collector pattern,
• wherein the anode pattern comprises a protrusion portion, and
• wherein top surfaces of both the cathode current collector and the anode current collector are on the same plan.

A thin film battery, comprising:

• a base substrate;
• a cathode current collector pattern on the base substrate;
• an anode current collector pattern on the base substrate electrically separated from the cathode current collector pattern, wherein the cathode current collector pattern surrounds the anode current collector pattern on at least two sides of the anode current collector pattern;
• a cathode pattern on the cathode current collector pattern;
• an electrolyte pattern on the cathode pattern, wherein the electrolyte pattern does not overlap the anode current collector pattern in the thickness direction of the substrate, wherein the cathode pattern is not fully covered the electrolyte pattern, and wherein the cathode current collector pattern does not contact with the electrolyte pattern;
• and
• an anode pattern on the electrolyte pattern,
• wherein at least one pattern of the cathode current collector pattern or the anode current collector pattern comprises a non-noble metal based alloy, wherein the cathode current collector pattern does not overlap the anode current collector pattern in a thickness direction of the substrate,
• wherein the cathode current collector pattern comprises two sides each of which faces with a side of the anode current collector pattern,
• wherein the anode pattern comprises a protrusion portion, and
• wherein top surfaces of both the cathode current collector and the anode current collector are on the same plan.