LIQUID CRYSTAL DISPLAY DEVICE HAVING WIRE GRID POLARIZER AND TWO DISPLAY STRUCTURES AND METHOD OF FORMING THE SAME

• US 20200133063A1
• Filed: 12/31/2019
• Published: 04/30/2020
• Est. Priority Date: 03/19/2018
• Status: Abandoned Application

• Current Assignee: A.U. Vista Inc. (AUO Corp.)
• Original Assignee: A.U. Vista Inc. (AUO Corp.)
• Inventors: Luo, Fang-Chen, Lee, Seok-Lyul
• Application Number:
  US16/731,642
• Publication Number:
  US 20200133063A1
• Time in Patent Office: Days
• CPC Class Codes: G02B 5/3058 comprising electrically conductive elements, e.g. wire grids, conductive particles
• CPC Class Codes: G02F 1/1334 based on polymer dispersed liquid crystals, e.g. microencapsulated liquid crystals
• CPC Class Codes: G02F 1/133512 Light shielding layers, e.g. black matrix G02F1/136209 takes precedence
• CPC Class Codes: G02F 1/133514 Colour filters
• CPC Class Codes: G02F 1/133528 Polarisers
• CPC Class Codes: G02F 1/133548 Wire-grid polarisers
• CPC Class Codes: G02F 1/133565 inside the LC elements, i.e. between the cell substrates
• CPC Class Codes: G02F 1/13476 in which at least one liquid crystal cell or layer assumes a scattering state
• CPC Class Codes: G02F 1/136286 Wiring, e.g. gate line, drain line
• CPC Class Codes: G02F 1/1368 in which the switching element is a three-electrode device G02F1/136277 takes precedence
• CPC Class Codes: G02F 2201/121 common or background
• CPC Class Codes: G02F 2201/123 pixel
• CPC Class Codes: H01L 27/1225 with semiconductor materials not belonging to the group IV of the periodic table, e.g. InGaZnO
• CPC Class Codes: H01L 27/124 with a particular composition, shape or layout of the wiring layers specially adapted to the circuit arrangement, e.g. scanning lines in LCD pixel circuits wiring structures per se H01L23/52
• CPC Class Codes: H01L 27/1251 comprising TFTs having a different architecture, e.g. top- and bottom gate TFTs
• CPC Class Codes: H01L 27/1262 with a particular formation, treatment or coating of the substrate

Abstract

A display cell structure is provided. A first substrate and a second substrate are spaced apart from each other, and a wire grid polarizer layer is disposed therebetween, forming a first cell gap between the first substrate and the wire grid polarizer layer and a second cell gap between the second substrate and the wire grid polarizer layer. A first display structure is disposed in the first cell gap, and includes multiple first pixel electrodes and a polymer liquid crystal layer. A polarizer layer is disposed on the second substrate and facing an opposite side to the wire grid polarizer layer. A second display structure is disposed in the second cell gap, and includes multiple second pixel electrodes and a liquid crystal layer.

Claims

1. A method for forming a display cell structure, comprising:

forming a first display structure of the display cell structure by;

disposing a plurality of first pixel electrodes on a first substrate;

disposing a polymer liquid crystal layer on the first substrate to cover the first pixel electrodes; and

disposing a common electrode layer on the polymer liquid crystal layer;

forming a wire grid polarizer layer on the common electrode layer;

forming a second display structure of the display cell structure by;

disposing a plurality of second pixel electrodes on a second substrate; and

disposing the second substrate with the second pixel electrodes to face the wire grid polarizer layer, such that a liquid crystal layer is positioned between the second substrate and the wire grid polarizer layer.

2. The method of claim 1, wherein the wire grid polarizer layer is formed by a low resistivity material to function as a common electrode for the display device, the low resistivity material has an electrical resistivity smaller than 10⁻

7 Ω

·

m, and the low resistivity material is selected from the group consisting of aluminum (Al), Molybdenum (Mo), Tungsten (W), or a combination thereof.

3. The method of claim 1, wherein each of the second pixel electrodes is aligned to one of the first pixel electrodes along a direction substantially perpendicular to the wire grid polarizer layer.

4. The method of claim 1, further comprising:

forming a polarizer layer on the second substrate and facing an opposite side to the wire grid polarizer layer.

5. The method of claim 1, wherein the second display structure is in a vertically-aligned (VA) mode or a twisted nematic (TN) mode.

6. The method of claim 1, further comprising:

forming a plurality of color filters on the second substrate,

wherein each of the second pixel electrodes corresponds to one of the color filters to form a sub-pixel.

7. The method of claim 1, wherein the common electrode layer is formed by indium tin oxide.