Electro-optic display
View Patent ↗An electro-optic display includes a first substrate provided thereon with a first electrode, a second substrate provided thereon with a second electrode forming an electric field in cooperation with the first electrode, and an electro-optic material interposed between the first and second substrates. The electro-optic material includes a non-polar solvent and a polar solvent dispersed in the non-polar solvent and controlled by the electric field. The first electrode is disposed on a non-display region of the first substrate including a plurality of pixels each of which having a display region, in which an image is displayed, and the non-display region adjacent to the display region. At least one of a reflective layer and a light sourcing layer defines an amount of light passed through the display area.
1. An electro-optic display comprising:
a first substrate comprising a plurality of pixels, each pixel comprising a display region, in which an image is displayed, and a non-display region adjacent to the display region;
a first electrode disposed in the non-display region;
a second substrate facing the first substrate, the second substrate having a second electrode disposed on the second substrate and facing the first electrode to form an electric filed with the first electrode; and
an electro-optic material interposed between the first electrode and the second electrode and comprising a non-polar solvent, and a polar solvent dispersed in the non-polar solvent and controlled by the electric field.
2. The electro-optic display of claim 1 , wherein the first substrate further comprises:
a gate line arranged in the non-display region;
a data line crossing the gate line in the non-display region; and
a thin film transistor connected to the gate line and the data line in the non-display region.
3. The electro-optic display of claim 2 , wherein the first electrode is positioned above the thin film transistor.
4. The electro-optic display of claim 2 , wherein the first electrode is positioned above the gate line and the data line.
5. The electro-optic display of claim 1 , further comprising a reflective layer disposed on a first surface of the first substrate opposing a second surface of the first substrate, in which the second surface of the first substrate faces the second substrate.
6. The electro-optic display of claim 5 , wherein the reflective layer comprises one of a titanium oxide, barium sulfate, alumina, silver, platinum, and gold.
7. The electro-optic display of claim 1 , further comprising a reflective layer disposed on a surface of the first substrate facing the second substrate and spaced apart from the first electrode.
8. The electro-optic display of claim 7 , wherein the reflective layer comprises one of a titanium oxide, barium sulfate, alumina, silver, platinum, and gold.
9. The electro-optic display of claim 1 , further comprising a backlight unit to supply the light to the display region.
10. The electro-optic display of claim 9 , wherein the first electrode comprises an opaque conductive material.
11. The electro-optic display of claim 9 , wherein the first electrode comprises a transparent conductive material.
12. The electro-optic display of claim 1 , wherein the polar solvent comprises a dye dissolved in the polar solvent.
13. The electro-optic display of claim 12 , wherein the polar solvent is charged with predetermined charges.
14. The electro-optic display of claim 12 , wherein the dye comprises at least one selected from the group consisting of monazo dyes, diazo dyes, triphenylmethane dyes, pyrazolone dyes, acridines, porphyrines, diformazan dyes, squarain dyes, oxazines, formazan dyes, colored metals and transition metal complexes, metal salts, acid anthraquinone dyes, amphoteric anthraquinone dyes, diphenylmethane dyes, polymethine dyes, thiazines, phthalocyanines, and tetrazolium dyes.
15. The electro-optic display of claim 1 , wherein the non-polar solvent comprises at least one selected from the group consisting of C 1-30 alkane, C 2-30 alknene, C 3-30 alkyne, C 3-30 aldehyde, C 3-30 ketone, C 2-30 ether, C 2-30 ester, C 3-30 thioester, terpene, C 2-30 organosilane, C 2-30 organosiloxane, and an aromatic compound.
16. The electro-optic display of claim 15 , wherein the non-polar solvent comprises an aromatic compound selected from the group consisting of benzene, toluene, and tetraline.
17. The electro-optic display of claim 1 , wherein the polar solvent comprises at least one selected from the group consisting of alcohol, amine, amide, ketone, carboxylic acid, carboxylic acid salt, glycol, polyether, sulfide, sulfonic acid, sulfonic acid salt, sulfate, phosphide, phosphite, phosphonite, phosphinite, phosphate, phosphonate, phosphinate, imide, nitrile, isonitrile, amidine, nitro compound, nitroso compound, sulfoxide, sulfonate, thiol, and water.
18. The electro-optic display of claim 17 , wherein the polar solvent comprises at least one selected from the group consisting of dimethyl sulfoxide (DMSO), dimethyl formamide (DMF), methanol, ethanol, glycol, nitromethane, acetonitrile, methoxyethanol, methyl cellosolve, and monoethyl ether.