# US 10,503,009 B2 · Integrated polarizer film and liquid crystal display integrated with the same polarizer film > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,503,009 B2 - Document ID: US10503009B2 - Status: Granted - Kind: B2 - Application number: 15/281,446 - Filed: 2016-09-30 - Published: 2017-03-30 - Granted: 2019-12-10 - Earliest claimed: 2015-09-30 - Assignees: LG Display Co., Ltd. - Applicants: LG Display Co., Ltd. - Inventors: Yoonjung Eo; Sejeon Park - Web page: https://patentgrep.com/patent/US10503009B2 ## CPC - G02F 1/133606: {including a specially adapted diffusing, scattering or light controlling members} - G02B 6/0053: {Prismatic sheet or layer; Brightness enhancement element, sheet or layer} - G02B 6/0056: {for producing polarisation effects, e.g. by a surface with polarizing properties or by an additional polarizing elements} - G02F 1/133528: {Polarisers} - G02F 1/133607: {the light controlling member including light directing or refracting elements, e.g. prisms or lenses} - G02F 2202/28: Adhesive materials or arrangements - G02F: OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS ## Abstract The present disclosure relates to an integrated polarizer film and a liquid crystal display integrated with the same polarizer film. The liquid crystal panel according to the present disclosure comprises: a liquid crystal panel; an upper polarizer film having a first light transmission axis and disposed on a top surface of the liquid crystal panel; a light diffusion layer embedded lower polarizer film having a second light transmission axis and disposed on a bottom surface of the liquid crystal panel; and an upper prism sheet laminated under the bottom surface of the light diffusion layer embedded lower polarizer film by a low refractive adhesive layer, and including a prism pattern having a first prism pattern and a second prism pattern smaller than the first prism pattern, wherein topmost portions of the first prism pattern are immersed into the low refractive adhesive layer, wherein the upper prism sheet is combined with the light diffusion layer embedded lower polarizer film, and wherein an air layer is inserted between the low refractive adhesive layer and the second prism pattern. ## Claims ### Claim 1 A liquid crystal display comprising: a liquid crystal panel; an upper polarizer film having a first light transmission axis and disposed on a top surface of the liquid crystal panel; a lower polarizer film having a second light transmission axis and disposed on a bottom surface of the liquid crystal panel; and an upper prism sheet laminated on the bottom surface of the lower polarizer film by a first refractive adhesive layer, wherein the first refractive adhesive layer includes a first adhesive layer having a refractive index being equal to and higher than 1.20 and equal to and lower than n, wherein n is lower than m, and a second adhesive layer having a refractive index being higher than n and lower than m, wherein the second adhesive layer is disposed on the top surface of the first adhesive layer, wherein the upper prism sheet has first and second prism patterns disposed alternately with each other and the first prism pattern or the second prism pattern is not consecutively positioned, and wherein each of the first and second prism patterns includes a single prism pattern the second prism pattern is smaller than the first prism pattern, the first prism pattern has topmost portions immersed into the first refractive adhesive layer, the upper prism sheet is integrated with the lower polarizer film; and an air layer disposed between the first refractive adhesive layer and the second prism pattern. ### Claim 2 (depends on 1) The display according to the claim 1, wherein the lower polarizer film includes: a base sheet having a refractive index of m; a light diffusion adhesive layer disposed on the top surface of the base sheet; and a polarizer sheet laminated on the base sheet by the first light diffusion adhesive layer. ### Claim 3 (depends on 2) The display according to claim 2, wherein the light diffusion adhesive layer includes a material having a Haze value of at least 60%. ### Claim 4 (depends on 2) The display according to claim 2, wherein the first refractive adhesive layer has a refractive index equal to or higher than 1.20 and is lower than m. ### Claim 5 (depends on 2) The display according to claim 2, wherein the first refractive adhesive layer is disposed on the bottom surface of the base sheet. ### Claim 6 (depends on 1) The display according to claim 1, wherein the first prism pattern has a first pitch and the second prism pattern has a second pitch, and the first pitch is larger than the second pitch. ### Claim 7 (depends on 6) The display according to claim 6, wherein the first pitch is about 30˜50 μm and the second pitch is about 20˜30 μm, and a distance between the bottom surface of the liquid crystal panel and the top of the first prism pattern of the upper prism sheet is about 210˜280 μm. ### Claim 8 (depends on 1) The display according to claim 1, further comprising a lower prism sheet disposed below the upper prism sheet. ### Claim 9 (depends on 8) The display according to claim 8, wherein the lower prism sheet includes: a third prism pattern having a size substantially the same as the first prism pattern; and a fourth prism pattern having a size substantially the same as the second prism pattern, wherein the first prism pattern has an arrangement direction different from that of the third prism pattern, and the second prism pattern has an arrangement direction different from that of the fourth prism pattern. ### Claim 10 (depends on 9) The display according to claim 9, wherein the lower prism sheet is integrated with the upper prism sheet by a second refractive adhesive layer having a refractive index being equal to or higher than 1.20 and lower than m, wherein the third prism pattern has topmost portions immersed into the second refractive adhesive layer. ### Claim 11 (depends on 10) The display according to claim 10 wherein the second refractive adhesive layer includes: a third adhesive layer having a refractive index being equal to and higher than 1.20 and equal to and lower than n, wherein n is lower than m; and a fourth adhesive layer having a refractive index higher than n and lower than m, wherein the fourth adhesive layer is disposed on the top surface of the third adhesive layer. ### Claim 12 (depends on 1) The display according to claim 1, wherein the first prism pattern and the second prism pattern include an apex having an acute angle in a cross-sectional view. ### Claim 13 An integrated polarizer film comprising: a transparent base sheet; a light diffusion adhesive layer disposed on a top surface of the transparent base sheet; a polarizer sheet having a light transmittance axis and laminated on the top surface of the base sheet by the light diffusion adhesive layer, wherein the first refractive adhesive layer includes a first adhesive layer having a refractive index being equal to and higher than 1.20 and equal to and lower than n, wherein n is lower than m, and a second adhesive layer having a refractive index being higher than n and lower than m, wherein the second adhesive layer is disposed on the top surface of the first adhesive layer; a first refractive adhesive layer disposed on a bottom surface of the base sheet; a first prism sheet laminated on the bottom surface of the base sheet by the first refractive adhesive layer, the first prism sheet having first and second prism patterns disposed alternately with each other, wherein the first prism pattern or the second prism pattern is not consecutively positioned and each of the first and second prism patterns includes a single prism pattern, and the second prism pattern being smaller than the first prism pattern; and an air layer disposed between the first refractive adhesive layer and the second prism pattern, wherein the first prism pattern has topmost portions immersed into the first refractive adhesive layer. ### Claim 14 (depends on 13) The integrated polarizer film according to claim 13, wherein the base sheet has a refractive index of m and the light diffusion adhesive layer has a refractive index equal to or higher than 1.20 and is lower than m. ### Claim 15 (depends on 14) The integrated polarizer film according to claim 14, wherein the light diffusion adhesive layer includes: a first adhesive layer having a refractive index equal to and higher than 1.20 and equal to and lower than n, wherein n is lower than m; and a second adhesive layer having a refractive index higher than n and lower than m, wherein the second adhesive layer is disposed on the top surface of the first adhesive layer. ### Claim 16 (depends on 13) The integrated polarizer film according to claim 13, wherein the light diffusion adhesive layer includes a material having a Haze value of at least 60%. ### Claim 17 (depends on 13) The integrated polarizer film according to claim 13, wherein the first prism pattern has a first pitch and the second prism pattern has a second pitch, wherein the second pitch is smaller than the first pitch, and the first and second patterns are disposed alternately each other. ### Claim 18 (depends on 13) The integrated polarizer film according to claim 13, further comprising a second prism sheet disposed below the first prism sheet. ### Claim 19 (depends on 18) The integrated polarizer film according to claim 18, the second prism sheet includes: a third prism pattern being having a size substantially the same as the first prism pattern; and a fourth prism pattern being having a size substantially the same as the second prism pattern, wherein the first prism pattern has an arrangement direction is different from that of the third prism pattern, and the second prism pattern has an arrangement direction different from that of the fourth prism pattern. ### Claim 20 (depends on 19) The integrated polarizer film according to claim 19, wherein the second prism sheet is integrated with the first prism sheet by a second refractive adhesive layer having a refractive index being equal to or higher than 1.20 and lower than m, wherein the third prism pattern has topmost portions immersed into the second refractive adhesive layer.