Display device

A display device for controlling a display of light comprising:

• a porous substance member having a plurality of openings and a plurality of depressions formed in a surface thereof, the size of each depression being larger than that of each opening;
• liquid material impregnated in said porous substance member, said liquid material having an index of refraction substantially equal to the index of refraction of said porous substance member and having a resistivity selected to permit the operation of said display device;
• at least one first electrode disposed proximate a surface of said porous substance member;
• at least one second electrode disposed proximate a surface of said porous substance member;
• and
• means for applying a signal voltage between said first and second electrodes to move the liquid material, in the porous substance member,
• whereby the liquid impregnation factor of the porous substance member is controlled by the movement of the liquid material in the porous substance member in response to the signal voltage to control the display of light and characteristics of the display is enhanced by the depressions.

A display device for controlling a display of light comprising:

• a porous substance member;
• liquid material impregnated in said porous substance member said liquid material having an index of refraction substantially equal to the index of refraction of said porous substance member and a resistivity selected to permit the operation of said display device;
• at least two first electrodes disposed proximate a first surface of said porous substance member and electrically insulated from each other;
• at least one second electrode disposed proximate a second surface of said porous substance member spaced from said first surface;
• first means for applying a first signal voltage between one first electrode and second electrode to move the liquid material in the porous substance member;
• and
• second means for applying a second signal voltage having an opposite polarity of said first signal voltage between another first electrode and said second electrode to move the liquid material in the porous substance member,
• whereby the liquid impregnation factor of the porous substance member is controlled by the movement of the liquid material in the porous substance member in response to the first and second signal voltages to control the display of light.

A display device for controlling a display of light comprising:

• a porous substance member having a plurality of first depressions in a first surface thereof and a plurality of second depressions in a second surface opposite to said first surface;
• liquid material impregnated in said porous substance member, said liquid material having an index of refraction substantially equal to the index of refraction of said porous substance member and having a resistivity selected to permit the operation of said display device;
• at least one first electrode disposed proximate said first surface of the porous substance member;
• at least one second electrode disposed proximate said second surface of the porous substance member;
• and
• means for applying a signal voltage between said first and second electrodes to move the liquid material in the porous substance member,
• whereby the liquid impregnation factor of the porous substance member is controlled by the movement of the liquid material in the porous substance member in response to the signal voltage to control the display of light and characteristics of the display is enhanced by the first and second depressions.

A display device for controlling a display of light comprising:

• a porous substance member having a plurality of first depressions on a first surface thereof;
• liquid material impregnated in said porous substance member, said liquid material having an index of refraction substantially equal to the index of refraction of said porous substance member and having a resistivity selected to permit the operation of said display device;
• support member disposed proximate a second surface of the porous substance member for supporting the porous substance member, which support member has a plurality of second depressions on a surface facing to said second surface of the porous substance member;
• at least one first electrode disposed on said first surface of the porous substance member;
• at least one second electrode disposed on said second surface of the support member and on the inner surfaces of the second depressions;
• and
• means for applying a signal voltage between said first and second electrodes to move the liquid material in the porous substance member,
• whereby the liquid impregnation factor of the porous substance member is controlled by the movement of the liquid material in the porous substance member in response to the signal voltage to control the display of light.

A display device for controlling a display of light comprising:

• a porous substance member having a first surface which has at least one first portion to provide a display area and a second portion to provide a non-display area, said porous substance member having a plurality of depressions in said first portion and at least one groove between said first and second portions;
• liquid material impregnated in said porous substance member, said liquid material having an index of refraction substantially equal to the index of refraction of said porous substance member and having a resistivity selected to permit the operation of said display device;
• at least one opaque layer disposed on said first surface while leaving said depressions uncovered;
• at least one first electrode disposed on said opaque layer corresponding to at least said first portion without being disposed on inner surfaces of said groove;
• at least one second electrode disposed proximate a second surface of said porous substance member spaced from said first surface;
• and
• means for applying a signal voltage between said first and second electrodes to move the liquid material in the porous substance member,
• whereby the liquid impregnation factor of the porous substance member is controlled by the movement of the liquid material in the porous substance member in response to the signal voltage to control the display of light and characteristics of the display is enhanced by the depressions, groove and opaque layer.

A color display device for controlling a display of light comprising:

• a porous substance member having a plurality of depressions on a first surface thereof;
• at least three liquid permeative coloring agents including red, green and blue deposited on inner surfaces of said depressions;
• liquid material impregnated in said porous substance member, said liquid material having an index of refraction substantially equal to the index of refraction of said porous substance member and having a resistivity selected to permit the operation of said display device;
• at least three first electrodes disposed on said first surface of the porous substance member corresponding to said coloring agents while leaving said depressions uncovered;
• at least one second electrode disposed proximate a second surface of said porous substance member spaced from said first surface;
• and
• means for supplying at least three signal voltages between said first electrode and second electrode respectively to move the liquid material in the porous substance member,
• whereby the liquid impregnation factor of the porous substance member is controlled by the movement of the liquid material in the porous substance member in response to said three signal voltages to control the display of colored light.

A color display device for controlling a display of light comprising:

• a light transmissive porous substance member having a plurality of depressions on a first surface thereof;
• at least three coloring agents including red, green and blue deposited proximate a second surface of said porous substance member corresponding to said depressions;
• light transmissive liquid material impregnated in the porous substance member, said liquid material having an index of refraction substantially equal to the index of refraction of said porous substance member and having a resistivity selected to permit the operation of said display device;
• at least three first electrodes disposed proximate said first surface of the porous substance member corresponding to said three coloring agents;
• at least one second electrode disposed proximate said second surface of the porous substance member;
• and
• means for supplying at least three signal voltages between said three first electrodes and second electrode respectively to move the liquid material in the porous substance member,
• whereby the liquid impregnation factor of the porous substance member is controlled by the movement of the liquid material in the porous substance member in response to said three signal voltages to control the display of colored light.

A display device for controlling a display of light comprising:

• a porous substance member;
• liquid material impregnated in said porous substance member, said liquid material having an index of refraction substantially equal to the index of refraction of said porous substance member and having a resistivity selected to permit the operation of said display device;
• at least one first electrode disposed proximate a surface of the porous substance member;
• at least one second electrode disposed proximate a surface of the porous substance member;
• a first support member for supporting said porous substance member;
• a second support member disposed to be spaced from a surface of said porous substance member opposite to the surface facing said first support member;
• bonding material for sealing said first and second support members at the peripherals;
• liquid impregnating member disposed between said first and second support members to be in contact with said porous substance member;
• and
• means for applying a signal voltage between said first and second electrodes to move the liquid material in the porous substance member,
• whereby the liquid impregnation factor of the porous substance member is controlled by the movement of the liquid material in the porous substance member in response to the signal voltage to control the display of light.

A substantially flat display device for controlling a display of light comprising:

• a substantially flat composite body including a substantially flat porous substance member and liquid material impregnated in said porous substance member, said liquid material having an index of refraction substantially equal to the index of refraction of said porous substance member and having a resistivity selected to permit the operation of said device;
• at least one first electrode disposed proximate a first surface of said composite body;
• at least one second electrode disposed proximate a second surface of said composite body opposite to said first surface;
• a substantially flat support member for supporting said second electrode on one surface thereof with a gap formed between said composite body and said second electrode;
• and
• means for applying a signal voltage between said first and second electrodes to move the liquid material in the porous substance member,
• whereby the liquid impregnation factor of the porous substance member is controlled by the movement of the liquid material in the porous substance member in response to the signal voltage to control the display of light and the liquid material flows into said gap upon said movement.

A display device for controlling a display of light comprising:

• a porous substance member;
• light transmissive liquid material impregnated in said porous substance member, said liquid material having an index of refraction substantially equal to the index of refraction of said porous substance member and have a resistivity selected to permit the operation of said display device;
• at least one first light transmissive electrode disposed on a first surface of said porous substance member;
• at least one second light transmissive electrode disposed on a second surface of said porous substance member opposite to said first surface;
• at least one support member for supporting a third surface of said porous substance member;
• and
• means for applying a signal voltage between said first and second electrodes to move the liquid material in the porous substance member,
• whereby the liquid impregnation factor of the porous substance member is controlled by the movement of the liquid material in the porous substance member in response to the signal voltage to control the display of light.

A display device for controlling a display of light comprising:

• a composite body including a light transmissive porous substance member and light transmissive liquid material impregnated in said porous substance member, said light transmissive liquid material having an index of refraction substantially equal to the index of refraction of said porous substance member and having a resistivity selected to permit the operation of said display device;
• at least one first light transmissive electrode disposed proximate a surface of said composite body;
• at least one second light transmissive electrode disposed proximate a surface of said composite body;
• means for applying a signal voltage between said first and second electrodes to move the liquid material in the porous substance member;
• a light source;
• lens system for controlling light rays from said light source passing through said composite body;
• and
• a projection screen for the display of light, whereby the liquid impregnation factor of the porous substance member is controlled by the movement of the liquid material in the porous substance member in response to the signal voltage so that light rays passing through said composite body is varied for display on the projection screen.