Electrochromic devices and methods for patterning such devices
First Claim
1. A method, comprising:
- providing an electrochromic device comprising a target layer, an absorbing electrochromic layer formed below the target layer, and an electrolyte layer formed below the absorbing electrochromic layer, the absorbing electrochromic layer being in a darkened state;
laser ablating the target layer using light comprising a wavelength that is transmitted through the target layer and comprising a fluence level that does not ablate layers of the electrochromic device that are below the absorbing electrochromic layer.
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Accused Products
Abstract
Varying the optical absorption of an electrochromic device in situ allows optimal control over the depth and quality of laser patterning lines when patterning electrochromic devices. Accordingly, an electrochromic device comprises a target conductive layer, an absorbing electrochromic layer formed below the target layer, and an electrolyte layer formed below the absorbing electrochromic layer. The absorbing electrochromic layer is placed in a darkened state, and the target layer is laser ablated using a wavelength that is minimally absorbed in the target layer and a fluence level that does not ablate layers of the electrochromic device that are below the absorbing electrochromic layer. The absorbing electrochromic layer is placed in the darkened state by applying a predetermined control voltage to the electrochromic device, forming the electrochromic device by dark-state deposition, or forming an electrochromic device that is in its darkened state in an equilibrium state.
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Citations
18 Claims
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1. A method, comprising:
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providing an electrochromic device comprising a target layer, an absorbing electrochromic layer formed below the target layer, and an electrolyte layer formed below the absorbing electrochromic layer, the absorbing electrochromic layer being in a darkened state; laser ablating the target layer using light comprising a wavelength that is transmitted through the target layer and comprising a fluence level that does not ablate layers of the electrochromic device that are below the absorbing electrochromic layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An electrochromic device formed by a method, comprising:
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providing an electrochromic device comprising a target layer, an absorbing electrochromic layer formed below the target layer, and an electrolyte layer formed below the absorbing electrochromic layer, the absorbing electrochromic layer being in a darkened state; laser ablating the target layer using light comprising a wavelength that is transmitted through the target layer and comprising a fluence level that does not ablate layers of the electrochromic device that are below the absorbing electrochromic layer. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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Specification