Liquid crystal image display unit and method for fabricating semiconductor optical member
AssigneeCanon Kabushiki Kaisha
InventorsTakao Yonehara, Mamoru Miyawaki, Akira Ishizaki, Junichi Hoshi, Masaru Sakamoto, Shigetoshi Sugawa, Shunsuke Inoue, Toru Koizumi, Tetsunobu Kohchi, Kiyofumi Sakaguchi, Takanori Watanabe
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Abstract
A liquid crystal image display unit created on a substrate non-transparent to the light in the visible radiation area, characterized in that a portion beneath a liquid crystal pixel part on said substrate is removed, so that the light is made transmissive through said liquid crystal pixel part.
Claims41
A method for fabricating a liquid crystal image display unit having a substrate and a liquid crystal pixel area formed on said substrate, wherein a portion of said substrate under said liquid crystal pixel area is light transparent, comprising the steps of:
- selecting a light non-transparent substrate;
- forming a light transparent insulation layer on said light non-transparent substrate;
- forming liquid crystal pixels comprising a single crystalline Si layer in a liquid crystal pixel area on said substrate;
- and
- thereafter removing a portion of said substrate under said liquid crystal pixel area by etching so that light is able to enter said liquid crystal pixel area,
- wherein said liquid crystal pixels are formed after a semiconductor element is formed on said light transparent insulation layer, and said semiconductor element is formed after a semiconductor layer formed on another substrate is transferred onto said substrate.
A fabrication method for a semiconductor optical member having a light transparent portion and a light non-transparent portion, comprising the steps of:
- bonding the surface side of monocrystalline semiconductor layer formed on a porous first substrate to an insulating surface side of a light non-transparent second substrate;
- removing said first substrate with a treatment including a step of wet etching;
- and
- forming a region upon which light is incident from said second substrate side on said monocrystalline semiconductor layer by removing a part of said second substrate.
A method for producing a semiconductor optical member having light transmitting section and non light transmitting section comprising steps of:
- preparing a first substrate having porous semiconductor layer and a single crystalline semiconductor layer;
- bonding said first substrate with a second non-light transmitting substrate through an insulating layer of the first light transmitting substrate, so as to provide a multi-layer structure in which the single crystalline semiconductor layer is positioned on an inner side thereof;
- removing the porous semiconductor layer from said multi-layer structure;
- and
- removing a part of said second substrate to form said light transmitting section.
A method for producing a liquid crystal display device having a pixel section and a peripheral section surrounding the pixel section comprising steps of:
- preparing a first substrate having porous semiconductor layer and a single crystalline semiconductor layer;
- bonding said first substrate with a second non-light transmitting substrate through a light transmitting insulating layer so as to form a multi-layer structure inner side of which said single crystalline semiconductor layer is positioned;
- removing the porous semiconductor layer from said multi-layer structure;
- forming pixel switching element in the single crystalline semiconductor layer of said pixel section;
- arranging a third substrate opposite to said multi-layer structure, so as to provide therebetween a liquid crystal layer;
- and
- removing a part of said second substrate positioned at the pixel section from said multi-layer structure.
Dependencies are inferred from the claim text.