Patents
US 12222602 B2: Optical film and backlight unit including the same
- Granted
- 2025-02-11
- Filed
- 2024-04-01 application 18624064
- Type
- Utility · 20 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
An optical film according to various embodiments of the present invention may include a first sheet comprising a first base portion, a first pattern layer including a plurality of prisms and formed on a surface of the first base portion, and a second pattern layer including a plurality of pyramids and formed as intaglio on the other surface of the first base portion; and a second sheet including a second base portion; a third pattern layer including a plurality of protrusions with an adhesive property and formed as a matte pattern on a surface of the second base portion, and a fourth pattern layer including a plurality of pyramids and formed as intaglio on the other surface of the second base portion.
Source: PVGPATDIS, file of 2026-04-10 (ipg250211.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| LMS Co., Ltd. 85 patents | Foreign company or organization | Pyeongtaek-si, KR | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Hyeonuk PARK | Pyeongtaek-si, KR | 4 | PVGPATDIS, file of 2026-04-10 | |
| Byeonghun LEE | Pyeongtaek-si, KR | 4 | PVGPATDIS, file of 2026-04-10 | |
| Dongkyu Lee | Pyeongtaek-si, KR | 92 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| 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 | G02F1/133607 | PVGPATDIS, file of 2026-04-10 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
| Recorded | What | From | To | Reel/frame | Source |
|---|---|---|---|---|---|
| 2024-04-02 | Assignment Assignment of assignor's interest | LEE, BYEONGHUN signed 2024-02-06 LEE, DONGKYU signed 2024-02-06 PARK, HYEONUK signed 2024-02-06 | LMS CO., LTD. PYEONGTAEK-SI, GYEONGGI-DO | 66971/767 | ECORSEXC, file of 2026-09-25 |
Documents recorded with the USPTO Assignment Recordation Branch that list this patent. A security interest is a lender’s claim on the patent as collateral; a release ends it.
USPTO bulk data: PatentsView granted patents, disambiguated (PVGPATDIS) for patents, assignees, inventors, places and CPC categories; the USPTO Patent Assignment Dataset (ECORSEXC) for assignments and security interests. Patents filed in the last 20 years. No claims or full text. Links to other records are by name (and state): EXACT means the identical full name and state; FUZZY means a looser name match, with the confidence shown.