Method for manufacturing semiconductor device
First Claim
1. A method for manufacturing a semiconductor device comprising:
- forming a first layer over a substrate;
forming a plurality of light absorbing layers over the first layer;
forming a layer having a light-transmitting property over the first layer and the plurality of light absorbing layers; and
irradiating the plurality of light absorbing layers with a linear laser beam so that the plurality of light absorbing layers are sublimated to be scattered by an energy of the linear laser beam and so that a part of the layer having a light-transmitting property overlapping with the plurality of light absorbing layers is removed,wherein an opening portion exposing the first layer is formed in the part of the layer having a light-transmitting property, andwherein the first layer is a semiconductor layer or a conductive layer.
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Accused Products
Abstract
The present invention offers a method for forming an opening portion by a simple process without using a photomask or a resist. Further, the present invention proposes a method for manufacturing a semiconductor device at low cost. A plurality of light absorbing layers is formed over a substrate, an interlayer insulating layer is formed over the plurality of light absorbing layers, the plurality of light absorbing layers is irradiated with a linear or rectangular laser beam from the interlayer insulating layer side, and at least the interlayer insulating layer which is over the plurality of light absorbing layers is removed and an opening portion is formed; and accordingly, a plurality of opening portions can be formed by removing the plurality of light absorbing layers and an insulating film formed over the plurality of light absorbing layers.
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Citations
9 Claims
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1. A method for manufacturing a semiconductor device comprising:
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forming a first layer over a substrate; forming a plurality of light absorbing layers over the first layer; forming a layer having a light-transmitting property over the first layer and the plurality of light absorbing layers; and irradiating the plurality of light absorbing layers with a linear laser beam so that the plurality of light absorbing layers are sublimated to be scattered by an energy of the linear laser beam and so that a part of the layer having a light-transmitting property overlapping with the plurality of light absorbing layers is removed, wherein an opening portion exposing the first layer is formed in the part of the layer having a light-transmitting property, and wherein the first layer is a semiconductor layer or a conductive layer. - View Dependent Claims (2, 3)
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4. A method for manufacturing a semiconductor device comprising:
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forming a first layer over a substrate; forming a plurality of light absorbing layers over the first layer; forming a second conductive layer having a light-transmitting property over the first layer; forming a third layer having a light-transmitting property over the plurality of light absorbing layers and the second conductive layer having a light-transmitting property; and irradiating the plurality of light absorbing layers and the second conductive layer having a light-transmitting property with a linear laser beam so that the plurality of light absorbing layers are sublimated to be scattered by an energy of the linear laser beam and so that a part of the third layer having a light-transmitting property overlapping with the plurality of light absorbing layers is removed, wherein an opening portion exposing the first layer is formed in the part of the third layer having a light-transmitting property, and wherein the first layer is a semiconductor layer or a conductive layer. - View Dependent Claims (5, 6)
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7. A method for manufacturing a semiconductor device comprising:
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forming a first layer over a substrate; forming a plurality of light absorbing layers over the first layer; forming a second conductive layer having a light-transmitting property which extends in a first direction over the first layer; forming a third layer having a light-transmitting property over the plurality of light absorbing layers and the second conductive layer having a light-transmitting property; and irradiating a region, in which the plurality of light absorbing layers is formed, with a linear laser beam in a direction intersecting with the first direction so that the plurality of light absorbing layers are sublimated to be scattered by an energy of the linear laser beam and so that a part of the third layer having a light-transmitting property overlapping with the plurality of light absorbing layers is removed, wherein an opening portion exposing the first layer is formed in the part of the third layer having a light-transmitting property, and wherein the first layer is a semiconductor layer or a conductive layer. - View Dependent Claims (8, 9)
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Specification