Battery with trench structure and fabrication method thereof

A thin film battery comprising:

• a substrate;
• a first collector, formed on the substrate, having a plurality of trenches formed at its upper portion;
• a cathode formed on the first collector;
• an electrolyte formed on the cathode;
• an anode formed on the electrolyte;
• and
• a second collector contacted to the anode, whereby sequentially stacking thin film elements for an effective contact interface between the cathode and the electrolyte and increasing an amount of the cathode.

A thin film battery comprising:

• a substrate;
• a first collector formed on the substrate;
• a cathode, formed on the first collector, having a plurality of trenches formed at its upper portion;
• an electrolyte formed on the cathode;
• an anode formed on the electrolyte;
• and
• a second collector contacted to the anode, whereby sequentially stacking thin film elements for an effective contact interface between the cathode and the electrolyte and increasing an amount of the cathode.

A bulk battery comprising:

• a substrate;
• a first collector, formed on the substrate, having a plurality of trenches formed at its upper portion;
• a cathode formed on the first collector;
• a first electrolyte formed on the cathode;
• an isolation film formed on the electrolyte;
• a second electrolyte formed on the isolation film;
• an anode formed on the second electrolyte;
• and
• a second collector contacted to the anode.

A bulk battery comprising:

• a substrate;
• a first collector formed on the substrate;
• a cathode, formed on the first collector, having a plurality of trenches formed at its upper portion;
• a first electrolyte formed on the cathode;
• an isolation film formed on the electrolyte;
• a second electrolyte formed on the isolation film;
• an anode formed on the second electrolyte;
• and
• a second collector contacted with the anode, said trenches being formed by etching one of the first collector and the cathode.

A method of fabricating a battery, comprising:

• forming a plurality of trenches at the upper portion of a substrate;
• forming a first collector on the substrate;
• forming a cathode on the first collector;
• forming an electrolyte on the cathode;
• forming an anode on the electrolyte;
• forming a second collector contacted to the anode;
• and
• fabricating the battery without the use of a liquid electrolyte.

A method of fabricating a battery, comprising:

• forming a first collector on the substrate;
• forming a plurality of trenches at the upper portion of the first collector;
• forming a cathode on the first collector;
• forming an electrolyte on the cathode;
• forming an anode on the electrolyte;
• and
• forming a second collector contacted to the anode.

A method of fabricating a battery, comprising:

• forming a first collector on a substrate;
• forming a cathode on the first collector;
• forming a plurality of trenches at the upper portion of the cathode;
• forming an electrolyte on the cathode;
• forming an anode on the electrolyte;
• and
• forming a second collector contacted to the anode.