Liquid crystal display element and projection type liquid crystal display device
First Claim
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1. A liquid crystal display element comprising:
- a liquid crystal layer;
a pixel electrode portion having a plurality of pixel apertures for transmitting light; and
at least one microlens array having a plurality of microlenses arranged in a two-dimensional form on at least one of a light incident side and a light emergent side of said liquid crystal layer corresponding to said pixel apertures, wherein each of said microlenses comprises;
a light-collecting lens having at least one lens surface in the optical axis direction for collecting incident light toward corresponding one of said pixel apertures, the light-collecting lenses of the plurality of microlenses being continuous in the two-dimensional form; and
a field lens having at least one lens surface in the optical axis direction so that the focal position thereof substantially coincides with the principal point of said light-collecting lens, the field lenses of the plurality of microlenses being continuous in the two-dimensional form.
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Abstract
In an liquid crystal panel, a microlens having first and second lens surfaces is placed corresponding to each pixel aperture. The focal position of the second lens surface substantially coincides with the principal point of the first lens surface, and the focal position of the entire microlens substantially coincides with the pixel aperture. In the liquid crystal panel, when incident light having a divergence angle component with respect to the optical axis emerges from the microlens, the divergence angle component is removed.
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Citations
6 Claims
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1. A liquid crystal display element comprising:
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a liquid crystal layer;
a pixel electrode portion having a plurality of pixel apertures for transmitting light; and
at least one microlens array having a plurality of microlenses arranged in a two-dimensional form on at least one of a light incident side and a light emergent side of said liquid crystal layer corresponding to said pixel apertures, wherein each of said microlenses comprises;
a light-collecting lens having at least one lens surface in the optical axis direction for collecting incident light toward corresponding one of said pixel apertures, the light-collecting lenses of the plurality of microlenses being continuous in the two-dimensional form; and
a field lens having at least one lens surface in the optical axis direction so that the focal position thereof substantially coincides with the principal point of said light-collecting lens, the field lenses of the plurality of microlenses being continuous in the two-dimensional form. - View Dependent Claims (2, 3, 4, 5)
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6. A projection type liquid crystal display device comprising:
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a light source for emitting light;
a liquid crystal display element for optically modulating incident light; and
a projection lens for projecting the light modulated by said liquid crystal display element, wherein said liquid crystal display element comprises;
a liquid crystal layer;
a pixel electrode portion having a plurality of pixel apertures for transmitting light; and
at least one microlens array having a plurality of microlenses arranged in a two-dimensional form on at least one of a light incident side and a light emergent side of said liquid crystal layer corresponding to said pixel apertures, and wherein each of said microlenses comprises;
a light-collecting lens having at least one lens surface in the optical axis direction for collecting incident light toward corresponding one of said pixel aperture, the light-collecting lenses of the plurality of microlenses being continuous in the two-dimensional form; and
a field lens having at least one lens surface in the optical axis direction so that the focal position thereof substantially coincides with the principal point of said light-collecting lens, the field lenses of the plurality of microlenses being continuous in the two-dimensional form.
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Specification