Large capacity solid state battery
AssigneeInternational Business Machines Corporation
InventorsAkihiro Horibe, Kuniaki Sueoka, Takahito Watanabe
Life of this patent
Estimating the term…
Abstract
A technique relating to a battery structure is disclosed. Abase substrate and a battery layer having a support substrate are prepared. The battery layer includes a protection layer formed on the support substrate, a film battery element formed on the protection layer and an insulator covering the film battery element. The battery layer is placed onto the base substrate with the bottom of the support substrate facing up. The support substrate is then removed from the battery layer at least in part by etching while protecting the film battery element by the protection layer. A stacked battery structure including the base substrate and the two or more battery layers is also disclosed.
Claims20
A method for fabricating a stacked battery structure, the method comprising:
- preparing a base substrate;
- preparing a battery layer formed on a support substrate, the battery layer including a protection layer formed on the support substrate, a film battery element formed on the protection layer and an insulator covering the film battery element;
- placing the battery layer onto the base substrate with the bottom of the support substrate facing up;
- and
- removing the support substrate from the battery layer at least in part by etching with an etchant while protecting the film battery element by the protection layer that works as an etch stopper against the etchant.
A method for fabricating a stacked structure, the method comprising:
- preparing a base substrate;
- preparing a device element layer formed on a support substrate, the device element layer including a protection layer formed on the support substrate, a device element formed on the protection layer and an adhesive material covering the device element;
- placing the device element layer onto the base substrate with the bottom of the support substrate facing up;
- and
- etching the support substrate from the bottom of the support substrate with an etchant until reaching the protection layer of the device element layer, which works as an etch stopper against the etchant.
A method for fabricating a stacked battery structure, the method comprising:
- preparing a base substrate;
- preparing a battery layer formed on a glass substrate, the battery layer including an etch stopper layer formed on the support substrate, a film battery element formed on the etch stopper layer and an insulator covering the film battery element;
- placing the battery layer onto the base substrate with the bottom of the glass substrate facing up;
- and
- removing the glass substrate from the battery layer at least in part by etching with an etchant while protecting the film battery element against the etchant by the etch stopper layer.
Dependencies are inferred from the claim text.