Patents
US 12117640 B2: Optical film
- Granted
- 2024-10-15
- Filed
- 2021-11-04 application 17519027
- Type
- Utility · 8 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
An optical film according to various embodiments of the disclosure may include: a prism pattern layer having one surface on which a plurality of prisms having pattern directions parallel to each other in a first direction are provided; a first diffusion layer provided on the other surface of the prism pattern layer; a base film that is in contact with the first diffusion layer on one surface and has an optical axis direction in a second direction different from the first direction; and a second diffusion layer that is in contact with the other surface of the base film. In addition, an optical film and a backlight unit including the optical film according to various embodiments may be provided.
Source: PVGPATDIS, file of 2026-04-10 (ipg241015.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 |
|---|---|---|---|---|
| Jinhwan Kim | Pyeongtaek-si, KR | 49 | PVGPATDIS, file of 2026-04-10 | |
| Sungsik Cho | Pyeongtaek-si, KR | 2 | PVGPATDIS, file of 2026-04-10 | |
| Juhyuk Yim | Pyeongtaek-si, KR | 1 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| G02B | Optical elements, systems or apparatus | G02B6/0053 | PVGPATDIS, file of 2026-04-10 |
| 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 | G02F1/133606 | 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 |
|---|---|---|---|---|---|
| 2021-11-04 | Assignment Assignment of assignor's interest | CHO, SUNGSIK signed 2021-10-06 YIM, JUHYUK signed 2021-10-06 KIM, JINHWAN signed 2021-10-12 | LMS CO., LTD. PYEONGTAEK-SI, GYEONGGI-DO | 58022/87 | 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.