Display panel and projection display system with use of display panel
First Claim
1. A liquid crystal display panel comprising:
- a first substrate on which pixel electrodes arranged as a matrix and signal lines for applying signals to the pixel electrodes are formed;
a second substrate on which a counter electrode is formed;
an optical modulation layer interposed between said first and second substrates, said optical modulation layer being capable of forming an optical image due to a change of an optical scattering state thereof; and
a light absorbing member formed on said signal lines, said light-absorbing member comprising a resin material capable of absorbing light scattered in said optical modulation layer.
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Abstract
In a display panel, a first substrate is opposed to a second substrate and interposing a liquid crystal/resin composite layer. If the display panel is a transmission type display, a film for absorbing light is formed on a black matrix and between pixel electrodes. If the display panel is a reflection type display, a film for absorbing light is formed between reflection electrodes. Further, a counterelectrode is made from a multi-layer film of dielectric films and a transparent electrically conductive film for preventing reflection. The film for absorbing light includes pigments which can absorb light modulated by the liquid crystal/resin composite layer. By using the display panel, a projection display system of high contrast and high brightness can be constructed.
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Citations
29 Claims
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1. A liquid crystal display panel comprising:
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a first substrate on which pixel electrodes arranged as a matrix and signal lines for applying signals to the pixel electrodes are formed; a second substrate on which a counter electrode is formed; an optical modulation layer interposed between said first and second substrates, said optical modulation layer being capable of forming an optical image due to a change of an optical scattering state thereof; and a light absorbing member formed on said signal lines, said light-absorbing member comprising a resin material capable of absorbing light scattered in said optical modulation layer. - View Dependent Claims (2)
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3. A liquid crystal panel comprising:
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first and second electrode substrates, at least one of the first and second electrode substrates being made of a transparent material; an optical modulation layer interposed between said first and second electrode substrates, said optical modulation layer being capable of forming an optical image due to a change of an optical scattering state; a first light-absorbing member formed on at least one of said first and second electrode substrates on a plane in contact with said optical modulation layer, said light-absorbing member being capable of absorbing light scattered in said optical modulation layer; a transparent plate; an optical coupling layer coupling optically said transparent plate to said at least one of said first and second electrode substrates; and a second light-absorbing member formed in an area of said transparent plate in which light effective for displaying an image does not propagate. - View Dependent Claims (4, 5, 6)
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7. A liquid crystal display panel comprising:
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a first substrate above which reflection electrodes arranged as a matrix are formed, switching elements connected to the reflection electrodes being formed between the reflection electrodes and said first substrate; a second substrate on which a counter electrode and a dielectric film made of an inorganic material so as to have an anti-reflection function are formed; a liquid crystal layer interposed between said first and second substrates; and a light-shielding film formed between the reflection electrodes capable of preventing light from entering from said liquid crystal layer to the switching elements. - View Dependent Claims (8, 9, 12, 14)
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10. A projection type liquid crystal display comprising:
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a display panel comprising;
a first substrate on which pixel electrodes arranged as a matrix are formed, a second substrate on which a counter electrode is formed, an optical modulation layer interposed between said first and second substrates, said optical modulation layer being capable of forming an optical image due to a change of an optical scattering state, and a light-absorbing film formed on a light-shielding layer formed on said counter electrode and being in contact with said optical modulation layer;a light source for generating a light beam; an optical system for guiding the light beam generated by said light source to said display panel; and a projection device for projecting light modulated by said display panel. - View Dependent Claims (11)
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13. A projection type liquid crystal display comprising:
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a display panel comprising;
a first substrate above which reflection electrodes arranged as a matrix are formed, switching elements connected to the reflection electrodes being formed between the reflection electrodes and said first substrate, a second substrate on which a counter electrode and a dielectric film made of an inorganic material so as to have an anti-reflection function are formed, a liquid crystal layer interposed between said first and second substrates, and a light-shielding film formed between the reflection electrodes capable of preventing light from entering from said liquid crystal layer to the switching elements;a light source for generating a light beam; an optical system for guiding the light beam generated by said light source to said display panel; and a projection device for projecting light modulated by said display panel.
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15. A projection type liquid crystal display comprising:
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a plurality of optically addressed display panels, each of the display panels comprising;
a first substrate on which an electrically conducting layer is formed, a second substrate on which a transparent counter electrode and at least one dielectric layer are formed so as to form an anti-reflection layer, an optical modulation layer capable of forming an optical image due to a change of an optical scattering state interposed between said first and second substrates, and a light absorbing member formed on at least one of said first and second substrates on a plane in contact with said optical modulation layer, the light-absorbing member being capable of absorbing light scattered by said optical modulation layer;a light source for generating a light beam; an optical system for guiding the light beam generated by said light source to said display panels; and a projection device for projecting light modulated by said display panels.
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16. A projection type liquid crystal display comprising:
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a plurality of display panels, each of said display panels comprising;
a first substrate having thereon pixel electrodes arranged as a matrix and signal lines for applying signals to the pixel electrodes, a second substrate on which a counter electrode is formed, an optical modulation layer interposed between said first and second substrates, said optical modulation layer being capable of forming an optical image due to a change of optical scattering state, and a light-absorbing member formed on said signal lines;wherein said plurality of display panels comprise a first display panel for modulating red, a second display panel for modulating green and a third display panel for modulating yellow; wherein said optical modulation layer of each of said plurality of display panels comprises a liquid crystal component and a resin component; wherein said optical modulation layer of said first display panel has a condition selected from the group consisting of
1) a droplet size of the liquid crystal component being larger than the droplet size of the liquid crystal component of said second and third display panels, and
2) a pore size of the resin component being larger than the pore size of the resin component of said second and third display panels;a light source for generating a light beam; an optical system for guiding the light beam generated by said light source to said display panels; and a projection device for projecting a light modulated by said display panels.
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17. A liquid crystal display panel comprising:
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a first substrate on which pixel electrodes are arranged as a matrix; a second substrate on which a counter electrode is formed; an optical modulation layer interposed between said first and second substrates, said optical modulation layer being capable of forming an optical image due to a change of an optical scattering state; and a light absorbing member for absorbing light scattered in said optical modulation layer, said light absorbing member being formed on said counter electrode to have an anti-reflection function.
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18. A liquid crystal display panel comprising:
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a first substrate on which pixel electrodes arranged as a matrix are formed; a second substrates on which a counter electrode and a black matrix are formed; an optical modulation layer interposed between said first and second substrates, said optical modulation layer being capable of forming an optical image due to a change of an optical scattering state; and a light-absorbing member formed on said black matrix, said light-absorbing member comprising a resin material capable of absorbing light scattered in said optical modulation layer. - View Dependent Claims (19)
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20. A liquid crystal display panel comprising:
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a first substrate on which transparent pixel electrodes arranged as a matrix are formed; a second substrate on which a counter electrode made of a transparent conductive material and at least one dielectric layer are layered so as to form an anti-reflection film; an optical modulation layer interposed between said first and second substrates, said optical modulation layer being capable of forming an optical image due to a change of an optical scattering state; and a light-absorbing member formed between the pixel electrodes for absorbing light scattered in said optical modulation layer. - View Dependent Claims (21, 22)
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23. An optically addressed liquid crystal display panel comprising,
a first substrate having electrically conductive layers formed thereon; -
a second substrate having thereon a transparent counter electrode and at least one dielectric layer layered so as to form an anti-reflection film; an optical modulation layer interposed between said first and second substrates, said optical modulation layer being capable of forming an optical image due to a change of an optical scattering state; and a light-absorbing member formed on at least one of said first and second substrates on a plane in contact with said optical modulation layer, said light-absorbing member being capable of absorbing light scattered in said optical modulation layer. - View Dependent Claims (24)
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25. A projection type liquid crystal display comprising:
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a plurality of a display panels each comprising;
a first substrate having reflection electrodes arranged thereon as a matrix, a second substrate having a counter electrode and at least one dielectric layer made of an inorganic material and layered thereon so as to form an anti-reflection film, an optical modulation layer interposed between said first and second substrates, said optical modulation layer being capable of forming an optical image due to a change of an optical scattering state, and a light absorbing member formed on at least one of said first and second substrates on a plane in contact with said optical modulation layer for absorbing light scattered in said optical modulation layer;a light source for generating a light beam; an optical system for guiding the light beam generated by said light source to said display panel; and a projection device for projecting light modulated by said display panel. - View Dependent Claims (26)
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27. A projection type liquid crystal display comprising:
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a plurality of optically addressed display panels, each of said display panels comprising;
a first substrates having reflection electrodes arranged thereon as a matrix and signal lines thereon for applying signals to the reflection electrodes, a second substrate having a counter electrode and at least one dielectric layer thereon so an to form an anti-reflection layer, an optical modulation layer interposed between said first and second substrates, said optical modulation layer being capable of forming an optical image due to a change of an optical scattering state, and a light-absorbing member formed between said reflection electrodes, said light-absorbing member being capable of absorbing light scattered in said optical modulation layer;a light source for generating a light beam; an optical system for separating the light beam generated by said light source into a plurality of optical paths so as to guide the light beam to said display panels and for synthesizing light modulated by said display panels into a single optical path; and a projection device for projecting light synthesized by said optical system.
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28. A projection type liquid crystal display comprising:
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a plurality of display panels, each of said display panels comprising;
a first substrate having pixel electrodes arranged as a matrix and signal lines for applying signals to the pixel electrodes formed thereon and a light-absorbing member made of resin and formed on the signal lines, a second substrate having a counter electrode, and an optical modulation layer interposed between said first and second substrates, said optical modulation layer being capable of forming an optical image due to a change of an optical scattering state;a light source for generating a light beam; an optical system for separating the light beam generated by said light source into a plurality of optical paths and guiding the light beam to said display panels; and a plurality of projection devices for projecting the light modulated by said plurality of display panels. - View Dependent Claims (29)
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Specification