Granted Patent B2

US 12,271,074 · App. 18/591,459 · Granted Apr 8, 2025

Inventors: Bingkun Yin (Hubei, CN); Changchih Huang (Hubei, CN); Guanghui Liu (Hubei, CN)

Assignee: WUHAN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.

G02F1/133357G02F1/133512G02B6/0036G02F1/133302G02F1/133624G02F1/1368

Abstract

Claims (17)

1. A liquid crystal display panel, comprising a pixel area comprising a plurality of sub-pixels of different colors, wherein the liquid crystal display panel comprises:

a glass substrate;

a grating structure disposed on the glass substrate, comprising a plurality of sub-gratings corresponding one-to-one to the plurality of the sub-pixels of different colors, and each of the sub-gratings comprising a plurality of layers with a same thickness;

a planarization layer disposed on the grating structure and covering the grating structure;

a thin-film transistor layer disposed on the planarization layer; and

a liquid crystal layer disposed on the thin-film transistor layer;

wherein thicknesses and refractive indexes of ones of the plurality of the sub-gratings corresponding to ones of the plurality of the sub-pixels of different colors are different.

2. The liquid crystal display panel according to claim 1 , wherein the plurality of the sub-pixels of different colors comprises a red sub-pixel, a green sub-pixel, and a blue sub-pixel, and thicknesses and refractive indexes of ones of the plurality of the sub-gratings respectively corresponding to the red sub-pixel, the green sub-pixel, and the blue sub-pixel are different.

3. The liquid crystal display panel according to claim 1 , wherein the liquid crystal display panel further comprises a plurality of light-shielding layers, and each of the light-shielding layers is disposed between adjacent two of the plurality of the sub-gratings.

4. The liquid crystal display panel according to claim 3 , wherein the plurality of the light-shielding layers are disposed in a same layer as the grating structure on the glass substrate.

5. The liquid crystal display panel according to claim 3 , wherein a material of the plurality of the light-shielding layers is an opaque material or a light-reflecting material.

6. The liquid crystal display panel according to claim 2 , wherein a wavelength of emitted light from one of the plurality of the sub-gratings corresponding to the red sub-pixel ranges from 580 nm to 660 nm, a wavelength of emitted light from one of the plurality of the sub-gratings corresponding to the green sub-pixel ranges from 500 nm to 580 nm, and a wavelength of emitted light from one of the plurality of the sub-gratings corresponding to the blue sub-pixel ranges from 440 nm to 500 nm.

7. The liquid crystal display panel according to claim 1 , wherein the liquid crystal display panel further comprises a reflective layer, the reflective layer is disposed on a side of the glass substrate away from the grating structure.

8. The liquid crystal display panel according to claim 7 , wherein the glass substrate is reused as a light guide plate, and a light source is disposed facing toward a sidewall of the glass substrate.

9. The liquid crystal display panel according to claim 1 , wherein a material of the plurality of the sub-gratings comprises silicon oxide doped with a photosensitive material.

10. The liquid crystal display panel according to claim 1 , wherein a width of one of the plurality of the sub-gratings is equal to a width of a corresponding one of the plurality of the sub-pixels.

11. The liquid crystal display panel according to claim 1 , wherein the liquid crystal display panel further comprises a lower polarizer and an upper polarizer disposed on opposite sides of the liquid crystal layer, the lower polarizer is disposed on a side of the liquid crystal layer close to the thin film transistor, and the upper polarizer is disposed on a side of the liquid crystal layer away from the thin film transistor layer.

Assignments (1)

Priority Claims (1)

Continuity (2)

References Cited (15)