# US 10,371,983 B2 · Display device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,371,983 B2 - Document ID: US10371983B2 - Status: Granted - Kind: B2 - Application number: 15/659,287 - Filed: 2017-07-25 - Published: 2018-02-01 - Granted: 2019-08-06 - Earliest claimed: 2016-07-26 - Assignees: LG Display Co., Ltd. - Applicants: LG Display Co., Ltd. - Inventors: Se-Min Lee; Hyeok-Joon Yoon; Ju-Sang Rhim; Dae-Yong Kim; Eun-Hee Choi; Se-Jin Lee - Web page: https://patentgrep.com/patent/US10371983B2 ## CPC - G02F 1/133504: {Diffusing, scattering, diffracting elements (associated to illuminating devices G02F1/133606)} - G02F 1/133502: {Antiglare, refractive index matching layers} - G02F 1/133512: {Light shielding layers, e.g. black matrix (G02F1/136209 takes precedence)} - G02F 1/136286: {Wiring, e.g. gate line, drain line} - H10K 59/35: comprising red-green-blue [RGB] subpixels - H10K 59/879: {comprising refractive means, e.g. lenses} - G02F 1/195: {by using frustrated reflection (digital reflection using controlled total internal reflection G02F1/315)} - G02F 2001/1635: {the pixel comprises active switching elements, e.g. TFT} - H10K 59/12: Active-matrix OLED [AMOLED] displays - H10K 59/873: {Encapsulations} - H10K 59/8791: {Arrangements for improving contrast, e.g. preventing reflection of ambient light} - 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 - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES ## Abstract A display device includes a display panel including a plurality of pixels each having a plurality of sub-pixels; and a light path adjustment film on the display panel, wherein the light path adjustment film includes a first base film, and a pattern layer on a surface of the first base film, wherein the pattern layer includes a plurality of first patterns having a first refractive index, and a plurality of second patterns between the first patterns and having a second refractive index less than the first refractive index, and wherein the first pattern includes a top surface spaced apart from the display panel and parallel with the display panel, a bottom surface between the top surface and the display panel, and a slanted surface connecting the top surface and the bottom surface. ## Claims ### Claim 1 A display device comprising: a display panel including a plurality of pixels each having a plurality of sub-pixels; and a light path adjustment film on the display panel, wherein the light path adjustment film includes a first base film, and a pattern layer on a surface of the first base film, wherein the pattern layer includes a plurality of first patterns having a first refractive index, and a plurality of second patterns between the plurality of first patterns and having a second refractive index less than the first refractive index, wherein each of the plurality of first patterns includes a top surface spaced apart from the display panel and parallel with the display panel, a bottom surface between the top surface and the display panel and overlapping the top surface, and a slanted surface connecting the top surface and the bottom surface, wherein the bottom surface of each of the plurality of first patterns is wider than the top surface of the first pattern that overlaps the bottom surface, wherein each of the plurality of first patterns overlaps a corresponding one sub-pixel from the plurality of sub-pixels, wherein a width of a bottom surface of a first pattern from the plurality of first patterns is wider than a width of an opening region of the sub-pixel that corresponds to the first pattern, and wherein a width of a top surface of the first pattern is wider than a width of the opening region of the subpixel. ### Claim 2 (depends on 1) The device of claim 1, wherein the light path adjustment film further includes a second base film, and the pattern layer is between the first and second base films. ### Claim 3 (depends on 1) The device of claim 1, wherein the plurality of first patterns are spaced apart from each other. ### Claim 4 (depends on 3) The device of claim 3, wherein the bottom surface of each of the plurality first patterns is spaced apart from a bottom surface of an adjacent first pattern such that a gap is formed between the bottom surface of the first pattern and the bottom surface of the adjacent first pattern. ### Claim 5 (depends on 1) The device of claim 1, wherein the first pattern has a truncated polypyramid shape or truncated cone shape. ### Claim 6 (depends on 1) The device of claim 1, wherein the plurality of second patterns comprise air gaps in the pattern layer. ### Claim 7 (depends on 1) The device of claim 1, wherein the bottom surface of each of the plurality of first patterns is in contact with a bottom surface of an adjacent first pattern. ### Claim 8 A display device comprising: a display panel including a plurality of pixels each having a plurality of sub-pixels; and a light path adjustment film on the display panel, wherein the light path adjustment film includes a first base film, and a pattern layer on a surface of the first base film, wherein the pattern layer includes a plurality of first patterns having a first refractive index, and a plurality of second patterns between the plurality of first patterns and having a second refractive index less than the first refractive index, wherein each of the plurality of first patterns includes a top surface spaced apart from the display panel and parallel with the display panel, a bottom surface between the top surface and the display panel and overlapping the top surface, and a slanted surface connecting the top surface and the bottom surface, wherein the bottom surface of each of the plurality of first patterns is wider than the top surface of the first pattern that overlaps the bottom surface, wherein each of the plurality of first patterns overlaps a corresponding one sub-pixel from the plurality of pixels, wherein a width of a bottom surface of a first pattern from the plurality of first patterns is wider than a width of an opening region and non-opening regions of a sub-pixel of a given pixel that corresponds to the first pattern, wherein the opening region is between the non-opening regions of the sub-pixel of the given pixel, and wherein a width of a top surface of the first pattern is wider than the width of the opening region of the sub-pixel of the given pixel, and is equal to or less than the non-opening regions of the sub-pixel of the given pixel. ### Claim 9 (depends on 8) The device of claim 8, wherein the plurality of second patterns comprise air gaps in the pattern layer. ### Claim 10 (depends on 8) The device of claim 8, wherein the bottom surface of each of the plurality of first patterns is in contact with a bottom surface of an adjacent first pattern. ### Claim 11 (depends on 8) The device of claim 8, wherein the bottom surface of each of the plurality first patterns is spaced apart from a bottom surface of an adjacent first pattern such that a gap is formed between the bottom surface of the first pattern and the bottom surface of the adjacent first pattern. ### Claim 12 (depends on 8) The device of claim 8, wherein the first pattern has a truncated polypyramid shape or truncated cone shape. ### Claim 13 A display device comprising: a display panel including a plurality of pixels each having a plurality of sub-pixels; and a light path adjustment film on the display panel, wherein the light path adjustment film includes a first base film, and a pattern layer on a surface of the first base film, wherein the pattern layer includes a plurality of first patterns having a first refractive index, and a plurality of second patterns between the plurality of first patterns and having a second refractive index less than the first refractive index, wherein each of the plurality of first patterns includes a top surface spaced apart from the display panel and parallel with the display panel, a bottom surface between the top surface and the display panel and overlapping the top surface, and a slanted surface connecting the top surface and the bottom surface, wherein the top surface of each of the plurality of first patterns is wider than the bottom surface of the first pattern that overlaps the bottom surface, wherein a width of a top surface of a first pattern from the plurality of first patterns is wider than a width of an opening region of the sub-pixel that corresponds to the first pattern, and wherein a width of the bottom surface of the first pattern is wider than a width of the opening region of the sub-pixel. ### Claim 14 (depends on 13) The device of claim 13, wherein the light path adjustment film further includes a second base film, and the pattern layer is between the first and second base films. ### Claim 15 (depends on 13) The device of claim 13, wherein the plurality of second patterns comprise air gaps in the pattern layer. ### Claim 16 (depends on 1) The device of claim 1, wherein the bottom surface of each of the plurality of first patterns is in contact with a bottom surface of an adjacent first pattern. ### Claim 17 (depends on 13) The device of claim 13, wherein the bottom surface of each of the plurality first patterns is spaced apart from a bottom surface of an adjacent first pattern such that a gap is formed between the bottom surface of the first pattern and the bottom surface of the adjacent first pattern. ### Claim 18 A display device comprising: a display panel including a plurality of pixels each having a plurality of sub-pixels; and a light path adjustment film on the display panel, wherein the light path adjustment film includes a first base film, and a pattern layer on a surface of the first base film, wherein the pattern layer includes a plurality of first patterns having a first refractive index, and a plurality of second patterns between the plurality of first patterns and having a second refractive index less than the first refractive index, wherein each of the plurality of first patterns includes a top surface spaced apart from the display panel and parallel with the display panel, a bottom surface between the top surface and the display panel and overlapping the top surface, and a slanted surface connecting the top surface and the bottom surface, wherein the top surface of each of the plurality of first patterns is wider than the bottom surface of the first pattern that overlaps the bottom surface, wherein each of the plurality of first patterns overlaps a corresponding one sub-pixel from the plurality of sub-pixels, wherein a width of the top surface of a first pattern from the plurality of first patterns is wider than a width of an opening region of a sub-pixel of a given pixel that corresponds to the first pattern, and wherein a width of the bottom surface of the first pattern is equal to or less than the width of the opening region and the non-opening regions of the sub-pixel of the given pixel. ### Claim 19 (depends on 18) The device of claim 18, wherein the light path adjustment film further includes a second base film, and the pattern layer is between the first and second base films. ### Claim 20 (depends on 18) The device of claim 18, wherein the plurality of second patterns comprise air gaps in the pattern layer. ### Claim 21 (depends on 1) The device of claim 1, wherein the bottom surface of each of the plurality of first patterns is in contact with a bottom surface of an adjacent first pattern. ### Claim 22 (depends on 18) The device of claim 18, wherein the bottom surface of each of the plurality first patterns is spaced apart from a bottom surface of an adjacent first pattern such that a gap is formed between the bottom surface of the first pattern and the bottom surface of the adjacent first pattern.