Laser methods for processing electrochromic glass

• Main Authors: RITZ, EITHAN, DIXIT, ABHISHEK ANANT, PRADHAN, ANSHU AJIT, PONCE CABRERA, LUIS VIDAL
• Format: Patent
• Language: Chinese; English
• Published: 01.03.2023
• Subjects: CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING; FREQUENCY-CHANGING; MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL LOGIC ELEMENTS; OPTICS; PERFORMING OPERATIONS; PHYSICS; SOLDERING OR UNSOLDERING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; TRANSPORTING; WELDING; WORKING BY LASER BEAM

Techniques for laser processing of a workpiece including electrochromic glass or other thin-film devices where one or more layers are sandwiched between two thin-film conductive layers include directing a laser beam from a laser source onto a surface of the workpiece, wherein the laser beam comprises projected light, the projected light having a selected near-infrared wavelength in the range of about 1.4 to about 3 [mu]m. Where the workpiece comprises an electrochromic device including an electrochromic stack disposed between a first transparent conductive layer, distal from the laser source, and a second transparent conductive layer, proximal to the laser source, removing the material includes removing a portion of the second transparent conductive layer and a portion of the electrochromic stack to expose a surface of the first transparent conductive layer without damaging the first transparent conductive layer.