Patents
US 12222595 B2: Optical film comprising a first sheet having a pyramid pattern layer and backlight unit having the same
- Granted
- 2025-02-11
- Filed
- 2024-05-10 application 18660323
- Type
- Utility · 14 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
According to various embodiments of the present disclosure, an optical film comprises a first sheet including a pyramid pattern layer including a plurality of pyramid patterns and a first prism pattern layer including a plurality of first prisms patterns; a second sheet including a second prism pattern layer including a plurality of second prism patterns and a first diffusion layer; and a third sheet including a third prism pattern layer including a plurality of third prism patterns and a second diffusion layer.
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 | G02F1/133504 | 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 |
|---|---|---|---|---|---|
| 2024-05-10 | Assignment Assignment of assignor's interest | LEE, BYEONGHUN signed 2024-04-17 LEE, DONGKYU signed 2024-04-17 PARK, HYEONUK signed 2024-04-17 | LMS CO., LTD. PYEONGTAEK-SI, GYEONGGI-DO | 67369/615 | 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.