Liquid crystal display and method for manufacturing the same

Patent metadata

Field	Value
Publication number	US-10288924-B2
Application number	US-201615338585-A
Country	US
Kind code	B2
Filing date	Oct 31, 2016
Priority date	Oct 30, 2015
Publication date	May 14, 2019
Grant date	May 14, 2019

Abstract

A liquid crystal display includes a display panel; and an optical film on a bottom surface of the display panel, the optical film including a polarizer; a support sheet on a bottom surface of the polarizer; and a prism sheet on a bottom surface of the support sheet, the prism sheet having a base sheet, a prism portion, and a stitch portion over the base sheet. The prism portion includes a plurality of peaks and has a space defined by a direct contact between the plurality of peaks of the prism portion and the bottom surface of the support sheet.

First claim

What is claimed is:

1. A liquid crystal display, comprising:
a display panel; and
an optical film on a bottom surface of the display panel, the optical film including:
a polarizer;
a support sheet on a bottom surface of the polarizer; and
a prism sheet on a bottom surface of the support sheet, the prism sheet having a base sheet, a prism portion, and a stitch portion over the base sheet,
wherein the prism portion includes a plurality of peaks and has a space defined by a direct contact between the plurality of peaks of the prism portion and the bottom surface of the support sheet, and
wherein the stitch portion is in a direction perpendicular to a length direction of the peaks of the prism portion.

2. The liquid crystal display of claim 1 , wherein the stitch portion is at least at both sides of the prism sheet.

3. The liquid crystal display of claim 1 , wherein the stitch portion fills a valley between adjacent peaks of the prism portion.

4. The liquid crystal display of claim 1 , wherein the stitch portion has a width of at least 1 mm.

5. The liquid crystal display of claim 1 , further comprising an additional prism sheet under the prism sheet.

6. The liquid crystal display of claim 1 , wherein the polarizer includes at least one core layer.

7. The liquid crystal display of claim 6 , wherein the polarizer further comprises a protection layer on at least one surface of the core layer.

8. The liquid crystal display of claim 1 , further comprising a backlight unit configured to provide light to the bottom surface of the display panel, the backlight unit including a light source, a light guide plate, and a reflection plate.

9. An optical film, comprising:
a polarizer;
a support sheet on a bottom surface of the polarizer; and
a prism sheet on a bottom surface of the support sheet, the prism sheet including a base sheet, a prism portion, and a stitch portion formed over the base sheet,
wherein the prism portion has a plurality of peaks and has a space defined by a direct contact between the plurality of peaks of the prism portion and the bottom surface of the support sheet, and
wherein the stitch portion is in a direction perpendicular to a length direction of the peaks of the prism portion.

10. A liquid crystal display, comprising:
a display panel; and
an optical film on a bottom surface of the display panel, the optical film including:
a polarizer;
a support sheet on a bottom surface of the polarizer;
a diffusion sheet on a bottom surface of the support sheet; and
a prism sheet on a bottom surface of the diffusion sheet, the prism sheet having a base sheet, a prism portion, and a stitch portion over the base sheet,
wherein the prism portion includes a plurality of peaks and has a space defined by a direct contact between the plurality of peaks of the prism portion and the bottom surface of the diffusion sheet, and
wherein the stitch portion is in a direction perpendicular to a length direction of the peaks of the prism portion.

Assignees

• Lg Display Co Ltd

Inventors

• PARK Sejeon
• Roh Sudong
• Cho Wonjong

Classifications

• G02F1/133528 Primary

  Polarisers · CPC title

• G02B6/0065

  Manufacturing aspects; Material aspects · CPC title

• G02F1/133615

  Edge-illuminating devices, i.e. illuminating from the side · CPC title

• G02F2201/50

  Protective arrangements · CPC title

• G02F1/133504 Primary

  Diffusing, scattering, diffracting elements (associated to illuminating devices G02F1/133606) · CPC title