Patents
US 11067735 B2: Direct-lit backlight unit with 2D local dimming
- Granted
- 2021-07-20
- Filed
- 2018-08-28 application 16642716
- Type
- Utility · 21 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
Backlight units include a light guide plate having a plurality of light extraction features, at least one light source optically coupled to a second major surface of the light guide plate, a rear reflector positioned proximate the second major surface, and a patterned reflective layer positioned proximate a first major surface of the light guide plate. Display and lighting devices comprising such backlight units are further disclosed.
Source: PVGPATDIS, file of 2026-04-10 (ipg210720.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| CORNING INCORPORATED 4,960 patents | US company or organization | Corning, NY | CORNING INCORPORATED Federal lobbying client EXACT high confidence: identical full name and state | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Dmitri Vladislavovich Kuksenkov | Elmira, NY | 32 | PVGPATDIS, file of 2026-04-10 | |
| David August Sniezek Loeber | Horseheads, NY | 3 | PVGPATDIS, file of 2026-04-10 | |
| Xiang-Dong Mi | Pittsford, NY | 41 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| G02B | Optical elements, systems or apparatus | G02B6/0036 | 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 | G02F1/133603 | 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 |
|---|---|---|---|---|---|
| 2020-02-27 | Assignment Assignment of assignor's interest | MI, XIANG-DONG signed 2018-07-30 KUKSENKOV, DMITRI VLADISLAVOVICH signed 2018-08-08 LOEBER, DAVID AUGUST SNIEZEK signed 2018-08-13 | CORNING INCORPORATED CORNING, NY | 51954/160 | 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.