Electro-optical device encased in mounting case, projection display apparatus, and mounting case
Provided is an electro-optical device encased in a mounting case including an electro-optical device having a substrate in which projection light from a light source is incident on an image display region, and a mounting case including a plate disposed to face one surface of the electro-optical device and a cover to cover the electro-optical device, a portion of the cover abutting against the plate, and the mounting case accommodating the electro-optical device by holding at least a portion of the peripheral region positioned at the periphery of the image display region of the electro-optical device with at least one of the plate and the cover. Also, the plate has a coefficient of linear expansion within a predetermined range on the basis of the coefficient of linear expansion of the substrate.
1. An electro-optical apparatus, comprising:
an electro-optical device encased in a mounting case and having a substrate in which projection light from a light source is incident on an image display region, and
the mounting case including a plate disposed to face one surface of the electro-optical device and a cover to cover the electro-optical device, a portion of the cover abutting against the plate, the mounting case accommodating the electro-optical device by holding at least a portion of a peripheral region positioned at the periphery of the image display region of the electro-optical device with at least one of the plate and the cover,
the plate having a coefficient of linear expansion within a predetermined range on the basis of the coefficient of linear expansion of the substrate.
2. The electro-optical apparatus according to claim 1 ,
the predetermined range being ±5×10 −6 [/° C.].
3. The electro-optical apparatus according to claim 1 ,
the plate being made of an alloy containing at least iron and nickel.
4. The electro-optical apparatus according to claim 1 ,
the plate being formed by press processing.
5. The electro-optical apparatus according to claim 4 ,
the plate being annealed before the press processing.
6. The electro-optical apparatus according to claim 1 ,
a light emitting surface of the plate being black.
7. The electro-optical apparatus according to claim 1 ,
the substrate including a pair of substrates to hold an electro-optic material therebetween and at least one dustproof substrate provided in one of the pair of substrates on the surface not facing the electro-optic material.
8. A projection display apparatus, comprising:
the electro-optical apparatus according to claim 1 ;
the light source;
an optical system to guide the projection light into the electro-optical device; and
a projection optical system to project the light emitted from the electro-optical device.
9. A mounting case, comprising:
a plate disposed to face one surface of an electro-optical device having a substrate in which projection light from a light source is incident on an image display region, and
a cover to cover the electro-optical device, a portion of the cover abutting against the plate,
the mounting case accommodating the electro-optical device by holding at least a portion of the peripheral region positioned at the periphery of the image display region of the electro-optical device, and
the plate having a coefficient of linear expansion within a predetermined range on the basis of the coefficient of linear expansion of the substrate.
10. A method to manufacture a plate of a mounting case, including a plate disposed to face one surface of an electro-optical device in which projection light from a light source is incident on an image display region, and a cover to cover the electro-optical device, a portion of the cover abutting against the plate, the mounting case accommodating the electro-optical device by holding at least a portion of the peripheral region positioned at the periphery of the image display region of the electro-optical device, the method comprising:
annealing an original plate to be used as the plate by heating the original plate to a predetermined temperature, and
pressing the original plate after the annealing step.