摘要:
A method of manufacturing a solar cell, which includes an edge deletion step using a laser beam, and a manufacturing apparatus which is used in such a method, the method and the apparatus being capable of preventing a shunt and cracks from being generated are provided. By radiating a first laser beam to a multilayer body, which includes a transparent electrode layer, a photoelectric conversion layer, and a back electrode layer sequentially formed on a transparent substrate, from a side of the transparent substrate, the photoelectric conversion layer and the back electrode layer in a first region are removed, and by radiating a second laser beam into the region such that the second laser beam is spaced from a peripheral rim of the region, the transparent electrode layer in a second region is removed.
摘要:
It is an object of the present invention to provide a method of separating a thin film transistor, and circuit or a semiconductor device including the thin film transistor from a substrate by a method different from that disclosed in the patent document 1 and transposing the thin film transistor, and the circuit or the semiconductor device to a substrate having flexibility. According to the present invention, a large opening or a plurality of openings is formed at an insulating film, a conductive film connected to a thin film transistor is formed at the opening, and a peeling layer is removed, then, a layer having the thin film transistor is transposed to a substrate provided with a conductive film or the like. A thin film transistor according to the present invention has a semiconductor film which is crystallized by laser irradiation and prevents a peeling layer from exposing at laser irradiation not to be irradiated with laser light.
摘要:
There are provided a solid lubricant having an island-and-sea structure, which, with the sea phase strengthened, remains free of troubles such as chipping even in use under high load conditions, and a sliding member having the solid lubricant embedded therein. The solid lubricant comprises 1 to 10% by volume of a polyethylene resin, 20 to 60% by volume of a hydrocarbon-based wax, 10 to 60% by volume of melamine cyanurate, 5 to 15% by volume of a polyamide resin, and 2 to 10% by volume of a modified polyethylene resin. The sliding member has the solid lubricant embedded in pores or grooves formed in a sliding surface of the sliding member body.
摘要:
The present invention provides a laser irradiation apparatus and a laser irradiation method which can conduct irradiation of a laser beam accurately by correcting misalignment of an irradiation position of the laser beam from the predetermined position due to temperature change. A laser irradiation apparatus includes a laser oscillator emitting a laser beam; an XY stage provided with an irradiation object; an optical system which shapes the laser beam into a linear beam on a surface of the irradiation object provided on the XY stage; an illumination device which emits light to the surface of the irradiation object; and a camera for imaging reflected light of the light on the surface of the irradiation object, in which misalignment of an irradiation position of the linear beam detected from the reflected light imaged by the camera is corrected.
摘要:
It is an object of the present invention to provide a laser irradiation apparatus being able to irradiate the irradiation object with the laser beam having homogeneous energy density without complicating the optical system. The laser irradiation apparatus of the present invention comprises a laser oscillator, an optical system for scanning repeatedly a beam spot of the laser beam emitted from the laser oscillator in a uniaxial direction over the surface of the irradiation object, and a position controlling means for moving the position of the irradiation object relative to the laser beam in a direction perpendicular to the uniaxial direction.
摘要:
The present invention is to provide a technique that can increase productivity with high output power by combining a plurality of laser beams on an irradiation surface without any difficulties in optical alignment. According to this technique, laser beams having different wavelengths are combined using a plurality of laser oscillators and a dichroic mirror, or additionally a polarizer. For example, a first laser beam emitted from a first laser oscillator is combined with a second laser beam emitted from a second laser oscillator having different wavelength from the first laser beam in such a way that the first laser beam passes through a dichroic mirror and the second laser beam is reflected on the dichroic mirror, and the combined laser beam is projected to an irradiation surface.
摘要:
When annealing of a semiconductor film is conducted using a plurality of lasers, each of the distances between laser irradiation regions is different. When a lithography step is conducted in accordance with a marker which is formed over a substrate in advance after the step, light-exposure is not correctly conducted to a portion crystallized by laser. By using a laser irradiation region obtained on a laser irradiation step as a marker, light-exposure is conducted by making a light-exposure position of a stepper coincide with a large grain size region in the laser irradiation region. A large grain size region and a poorly crystalline region are detected by utilizing a thing that scattering intensity of light is different between the large grain size region and the poorly crystalline region, thereby determining a light-exposure position.
摘要:
It is an object of the present invention to provide a method for manufacturing a semiconductor device, capable of keeping a peeling layer from being peeled from a substrate in the phase before the completion of a semiconductor element and peeling a semiconductor element rapidly. It is considered that a peeling layer tends to be peeled from a substrate because the stress is applied to a peeling layer due to the difference in thermal expansion coefficient between a substrate and a peeling layer, or because the volume of a peeling layer is reduced and thus the stress is applied thereto by crystallization of the peeling layer due to heat treatment. Therefore, according to one feature of the invention, the adhesion of a substrate and a peeling layer is enhanced by forming an insulating film (buffer film) for relieving the stress on the peeling layer between the substrate and the peeling layer before forming the peeling layer over the substrate.
摘要:
An object of the present invention is to provide a laser irradiation method being able to control the irradiation position of the laser beam accurately compared with the conventional irradiation method. Another object of the present invention is to provide a method for manufacturing a semiconductor device with the use of the laser irradiation method being able to irradiate a large substrate accurately with the laser beam.The irradiation position of the laser beam is controlled by using a laser oscillator emitting a laser beam, an optical system for shaping the laser beam into rectangular on the irradiation object, means for moving the irradiation object relative to the laser beam in the long-side direction and the short-side direction of the beam spot, means for moving the irradiation object more slowly in the long-side direction than in the short-side direction, and a laser positioning mechanism.
摘要:
In conducting laser annealing using a CW laser or a quasi-CW laser, productivity is not high as compared with an excimer laser and thus, it is necessary to further enhance productivity. According to the present invention, a fundamental wave is used without putting laser light into a non linear optical element, and laser annealing is conducted by irradiating a semiconductor thin film with pulsed laser light having a high repetition rate. A laser oscillator having a high output power can be used for laser annealing, since a non linear optical element is not used and thus light is not converted to a harmonic. Therefore, the width of a region having large grain crystals that is formed by scanning once can be increased, and thus the productivity can be enhanced dramatically.