Touch-responsive capacitor with polarizing dielectric structure
A touch-responsive capacitive apparatus includes means for defining first and second surfaces, a first micro-wire layer formed on the first surface, the first micro-wire layer including a plurality of electrically connected first micro-wires, a second micro-wire layer formed on the second surface, the second micro-wire layer including a plurality of electrically connected second micro-wires, and a polarizing dielectric structure located between the first and second micro-wire layers.
1. A touch-responsive capacitive apparatus, comprising:
a polarizing dielectric structure defining first and second opposed surfaces;
a first micro-wire layer formed in contact with the first surface, the first micro-wire layer including a plurality of electrically connected first micro-wires, the first micro-wire layer forming a first array of electrodes;
a second micro-wire layer formed in contact with the second surface, the second micro-wire layer including a plurality of electrically connected second micro-wires, the second micro-wire layer forming a second array of electrodes;
the polarizing dielectric structure located between the first and second micro-wire layers, wherein the polarizing dielectric structure is a circular polarizer including a quarter wave plate and a linear polarizer;
a first substrate on which the first micro-wire layer is formed and a second substrate different from the first substrate on which the second micro-wire layer is formed; and
wherein the second substrate is the quarter wave plate and the first substrate is the linear polarizer.
2. The touch-responsive capacitive apparatus of claim 1 , wherein the first substrate or the second substrate has a transparency greater than 80% transmittance to light at 550 nm.
3. The touch-responsive capacitive apparatus of claim 1 , wherein the first micro-wires or second micro-wires absorb ambient light.
4. The touch-responsive capacitive apparatus of claim 1 , wherein the first micro-wires or second micro-wires are a metal, a metal alloy, or a material including cured or sintered metal particles.
5. The touch-responsive capacitive apparatus of claim 4 , wherein the metal includes nickel, tungsten, silver, gold, aluminum, copper, titanium, or tin, or combinations thereof.
6. The touch-responsive capacitive apparatus of claim 1 , wherein the first micro-wires or the second micro-wires each have a width in a range of 0.5 um to 20 um and occupy an area less than 15% of the area of the first micro-wire layer or the second micro-wire layer, respectively.
7. A touch-responsive display apparatus, comprising:
a display having a viewing side through which display light is emitted or transmitted and ambient light is reflected;
a polarizing dielectric structure defining first and second opposed surfaces;
a first micro-wire layer formed in contact with the first surface over the viewing side, the first micro-wire layer including a plurality of electrically connected first micro-wires the first micro-wire layer forming a first array of electrodes;
a second micro-wire layer formed in contact with the second surface over the first surface, the second micro-wire layer including a plurality of electrically connected second micro-wires, the second micro-wire layer forming a second array of electrodes;
the polarizing dielectric structure located between the first and second micro-wire layers, wherein the polarizing dielectric structure is a circular polarizer including a quarter wave plate and a linear polarizer;
a first substrate on which the first micro-wire layer is formed and a second substrate different from the first substrate on which the second micro-wire layer is formed; and
wherein the second substrate is the quarter wave plate and the first substrate is the linear polarizer.
8. The touch-responsive display apparatus of claim 7 , further including an OLED display.
9. A touch-responsive capacitive apparatus, comprising:
a polarizing dielectric structure defining first and second opposed surfaces;
a first electrode layer formed in contact with the first surface, the first electrode layer including a plurality of first transparent electrodes;
a second electrode layer formed in contact with the second surface, the second electrode layer including a plurality of second transparent electrodes;
the polarizing dielectric structure located between the first and second electrode layers;
wherein the polarizing dielectric structure is a circular polarizer including a quarter wave plate and a linear polarizer;
a first substrate on which the first electrode layer is formed and a second substrate different from the first substrate on which the second electrode layer is formed; and
wherein the second substrate is the quarter wave plate and the first substrate is the linear polarizer.
10. A touch-responsive display apparatus, comprising:
a display having a viewing side through which display light is emitted or transmitted and ambient light is reflected;
a polarizing dielectric structure defining first and second opposed surfaces;
a first electrode layer formed in contact with the first surface over the viewing side, the first electrode layer including a plurality of first transparent electrodes;
a second electrode layer formed in contact with the second surface over the viewing side, the second electrode layer including a plurality of second transparent electrodes;
the polarizing dielectric structure located between the first and second electrode layers;
wherein the polarizing dielectric structure is a circular polarizer including a quarter wave plate and a linear polarizer;
a first substrate on which the first electrode layer is formed and a second substrate different from the first substrate on which the second electrode layer is formed; and
wherein the second substrate is the quarter wave plate and the first substrate is the linear polarizer.