17682249. LIGHT-EMITTING DEVICE INCLUDING FLUORESCENT COMPOUND, ELECTRONIC APPARATUS INCLUDING LIGHT-EMITTING DEVICE, AND FLUORESCENT COMPOUND simplified abstract (Samsung Electronics Co., Ltd.)

LIGHT-EMITTING DEVICE INCLUDING FLUORESCENT COMPOUND, ELECTRONIC APPARATUS INCLUDING LIGHT-EMITTING DEVICE, AND FLUORESCENT COMPOUND

Organization Name

Samsung Electronics Co., Ltd.

Inventor(s)

Yongsik Jung of Seoul (KR)

Youngmin You of Seoul (KR)

Juhyun Kim of Seoul (KR)

Yusung Chun of Goyang-si (KR)

Joonghyuk Kim of Seoul (KR)

Dayoon Song of Daejeon (KR)

Dongyeun Jeong of Seoul (KR)

Seunghee Choi of Seoul (KR)

Sooghang Ihn of Hwaseong-si (KR)

Hyeonho Choi of Seoul (KR)

LIGHT-EMITTING DEVICE INCLUDING FLUORESCENT COMPOUND, ELECTRONIC APPARATUS INCLUDING LIGHT-EMITTING DEVICE, AND FLUORESCENT COMPOUND - A simplified explanation of the abstract

This abstract first appeared for US patent application 17682249 titled 'LIGHT-EMITTING DEVICE INCLUDING FLUORESCENT COMPOUND, ELECTRONIC APPARATUS INCLUDING LIGHT-EMITTING DEVICE, AND FLUORESCENT COMPOUND

Simplified Explanation

The abstract describes a light-emitting device that utilizes an organic layer containing a fluorescent compound to emit light via fluorescence. The compound undergoes a process called reverse intersystem crossing (rISC), where excitons in an excited state migrate to a higher excited state before transitioning to a ground state and emitting light.

• The light-emitting device includes an organic layer with a fluorescent compound.
• Excitons in the compound's excited state migrate to a higher excited state through reverse intersystem crossing (rISC).
• The compound then transitions to a ground state and emits light through fluorescence.
• The fluorescent compound has a ratio of rISC to internal conversion (IC) rate of 0.5 or greater.

Potential applications of this technology:

• Lighting: The light-emitting device can be used for general lighting purposes, such as in homes, offices, or public spaces.
• Displays: The device can be integrated into displays, such as televisions, smartphones, or digital signage.
• Signage: The technology can be used to create illuminated signs or billboards.
• Automotive lighting: The light-emitting device can be utilized in headlights, taillights, or interior lighting of vehicles.

Problems solved by this technology:

• Energy efficiency: The use of the fluorescent compound and the rISC process allows for efficient light emission, reducing energy consumption.
• Longevity: The organic layer and the fluorescent compound can be designed to have a longer lifespan compared to traditional light-emitting materials.
• Color accuracy: The technology can produce a wide range of colors with high color accuracy, making it suitable for applications requiring precise color representation.

Benefits of this technology:

• Energy savings: The efficient light emission of the device leads to reduced energy consumption and lower electricity costs.
• Longer lifespan: The organic layer and fluorescent compound can have a longer operational lifespan, reducing the need for frequent replacements.
• Versatile color options: The technology allows for the production of a wide range of colors with high color accuracy, providing flexibility in various applications.

Original Abstract Submitted

A light-emitting device including an organic layer disposed between a first electrode and a second electrode, the organic layer comprising a fluorescent compound, wherein upon excitation, excitons in a n-π* excited state of the fluorescent compound migrate to a π-π* excited state of the fluorescent compound by reverse intersystem crossing with a Rate (rISC), and then undergo radiative transition to a ground state to emit light via fluorescence. The fluorescent compound is defined by a ratio of Rate (rISC) to Rate (IC) is 0.5 or greater. An electronic apparatus including the light-emitting device, and the fluorescent compound.