44 results about "Laser chemistry" patented technology

A system and method for determining precisely in-situ the endpoint of halogen-assisted charged particle beam milling of a hole or trench in the backside of the substrate of a flipchip packaged IC. The backside of the IC is mechanically thinned. Optionally, a coarse trench is then milled in the thinned backside of the IC using either laser chemical etching or halogen-assisted charged particle beam milling. A further small trench is milled using a halogen-assisted charged-particle beam (electron or ion beam). The endpoint for milling this small trench is determined precisely by monitoring the power supply leakage current of the IC induced by electron-hole pairs created by the milling process. A precise in-situ endpoint detection signal is generated by modulating the beam at a reference frequency and then amplifying that frequency component in the power supply leakage current with an amplifier, narrow-band amplifier or lock-in amplifier. The precise, in-situ, endpoint signal is processed and displayed for manual or automatic precise in-situ endpoint detection. This approach avoids or minimizes unintentional damage or perturbation of the active diffusion regions in the IC. A range of further operations on the IC can then be performed.

The invention is of a grating election rapid tunable laser resonator, involving laser technology, the laser resonator with servo-motor-driven rotary turntable grating and accurate positioning and achieve grating election of the rapid line tunable lasers. The laser resonator cavity of the laser output mirror, grating, grating turntable, the servo motor, servo motor drive modules and control modules and other components, which is part of the output mirror reflection of the transmission type spherical mirror or plane mirror, grating for the plane or spherical reflecting diffraction grating. Total output mirror and a grating optical axis, and the normal and the optical axis grating into the quasi-rectangular. This invention achieved a grating election rapid tuning of the laser output, tuning speed, tuning range, high precision tuning advantages. Apply to pulse CO2 laser pulse CO laser, pulsed HF / DF and other tunable laser pulse laser, laser atmospheric detection, laser chemistry, laser processing, and other fields have a broad application prospects.

The invention discloses a disconnection repair method, a substrate and a display device, belonging to the field of displays. The method includes: forming a conductive polymer precursor film in a broken line area of ​​the conductive line, the broken line area includes at least one pair of conductive points, each pair of conductive points includes two conductive points disconnected from each other, and the conductive polymer precursor film Contacting at least one pair of conductive points; performing light treatment on the conductive polymer precursor film, so that the conductive polymer precursor film between each pair of conductive points undergoes photopolymerization to form a conductive polymer. The conductive polymer precursor film is photopolymerized by light to form a conductive polymer, so that a conductive polymer line is generated between each pair of conductive points, and each pair of conductive points is connected to realize circuit repair without using laser chemistry. Vapor deposition, low repair cost and short repair time, will not affect the performance of pixel units around the disconnected area.

The invention discloses a preparation method of a high-adhesion super-hydrophobic surface based on a laser chemical composite process, which improves the preparation efficiency. The method includes the following steps: step 10) cleaning the substrate; step 20) laser surface microtexture: using a laser beam to process micro-nano structures on the surface of the alloy substrate, and then ultrasonically cleaning in absolute ethanol; step 30) silane solution infiltration: the step 20) The treated alloy substrate is soaked in a mixed solution of 1H, 1H, 2H, 2H-tetrahydroperfluorooctyltrichlorosilane and ethanol, then taken out and placed in a nitrogen stream to dry, and finally placed in an oven Medium baking; Step 40) Sodium chloride solution soaking: soak the alloy substrate treated in step 30) in a sodium chloride solution, then take it out and clean it with deionized water, and finally place it in a nitrogen stream to dry it to obtain High adhesion superhydrophobic surface.

The invention relates to a line-selecting annular cavity for a chemical laser device. The device adopts a stable annular cavity structure, and along the transmission direction of the laser, it is sequentially provided with a blazed grating, a plane reflector, a plane reflector, a plano-concave reflector, and a Burrue. The Steer plate, the active medium area, and the Brewster plate are provided with a flat reflector at the zero-order diffraction output of the blazed grating. The laser device of the present invention uses a fixed diffraction grating to realize the line selection output of the chemical laser by utilizing the first-order diffraction oscillation and the zero-order diffraction output. The resonant cavity of the laser adopts a four-mirror rectangular traveling wave cavity or a four-mirror "8" ring traveling wave cavity structure, which enables the laser to more effectively extract the active particles in the gain medium region and increase the output power of the line-selected laser. With compact structure, high power, good beam quality and high stability, it can be widely used in laser physics, laser chemistry, material processing and other fields.