US 12,002,911 B2Granted

Passive three-dimensional LED display and method for fabrication thereof

AssigneeSct Ltd.

InventorsShihfeng Shao, Chang Hung Pan

Life of this patent

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Abstract

A 3D LED display panel that includes a substrate and an array light emitting devices mounted on the substrate. The array of light emitting devices includes a plurality of first light emitting devices and a plurality of second light emitting devices. Each first light emitting device has an LED chip/package electrically connected to the substrate and a piece of first circular polarizer attached to the LED chip/package. Likewise, each second light emitting device includes an LED chip/package electrically connected to the substrate and a piece of second circular polarizer attached to the LED chip/package. The first circular polarizer the second circular polarizer have opposite circular polarizations.

Claims7

Dependent claims

A method to manufacture an LED display panel, comprising:

cutting a film of first circular polarizer to obtain a plurality of first circular polarizer units;
cutting a film of second circular polarizer to obtain a plurality of second circular polarizer units, wherein the first circular polarizer and the second circular polarizer are of opposite circular polarizations;
attaching each of the plurality of first circular polarizer units to each of a first plurality of LED chips/packages to form a plurality of first light emitting devices so that each first light emitting device has a first circular polarizer unit attached thereto;
attaching each of the plurality of second circular polarizer units to each of a second plurality of LED chips/packages to form a plurality of second light emitting devices so that each second light emitting device has a second circular polarizer unit attached thereto,
wherein the plurality of first light emitting devices and the plurality of second light emitting devices are disposed on a substrate.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 18/159,203Filed 25 Jan 2023 · division
Priority: 18 Nov 2020
Published: US 2023/0163263 A125 May 2023
Granted: 4 Jun 2024
Term ends: Not estimatedThe source records don’t support an estimate.

Classification8 codes

H10H 20/855
Packages: optical field-shaping means, e.g. lenses
G02B 5/3025
Polarising elements: polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
H10H 20/0363
Of packages: of optical field-shaping means
H10H 29/8552
Optical field-shaping means, e.g. lenses: light absorbing arrangements, e.g. black matrix

Family

Application16/951,677Parent of this division · filed 18 Nov 2020
US 2023/0163263 A1Pre-grant publication · published 25 May 2023
US 11,600,753 B2Parent of this division
US 2022/0158047 A1Published application
US 12,002,911 B2This patent

From the US filing history. Foreign family members aren’t listed.

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