Series Light Source Device for Compact RGB Display

Solution Overview

Problem

Existing light-emitting devices face challenges in achieving a compact configuration while efficiently emitting multiple colors, leading to increased complexity and power consumption.

Innovation Solution

A light source device comprising a first terminal, a second terminal, a third terminal, and a fourth terminal, with three light-emitting elements disposed in separate paths, each emitting basic color light, and controlled by switches and current sources to optimize light emission and reduce power consumption.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If multiple light-emitting elements are coupled in series to emit multiple colors, then color emission capability is improved, but device complexity increases

Engineering Contradiction:

Improvecolor emission capabilityVSAvoiddevice complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The light-emitting element is divided into three separate light-emitting elements, each emitting a different basic color (red, green, blue). These segmented elements are coupled in series between the first and second terminals, allowing independent control of each color channel while maintaining a compact series circuit structure.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The single light-emitting component performs multiple functions by emitting three different basic colors simultaneously. This multi-functional design allows the device to display various colors and hues by combining the emissions from the three light-emitting elements, eliminating the need for separate color emission systems.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Adaptability or versatility

If multiple light-emitting elements are used to emit multiple colors, then color emission capability is improved, but power consumption increases

Engineering Contradiction:

Improvecolor emission capabilityVSAvoidpower consumption

Core Design Contradiction:

Adaptability or versatilityVSUse of energy by moving object

Solution Approach 1:

The light-emitting element is divided into three separate light-emitting elements, each emitting a different basic color (red, green, blue). These segmented elements are coupled in series between the first and second terminals, allowing independent control of each color channel while maintaining a compact series circuit structure.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The device dynamically controls the emission of each light-emitting element through independent control signals applied to the first, second, and third terminals. This dynamic control allows the system to activate only the necessary color channels based on display requirements, optimizing power consumption while maintaining color emission capability.

Inventive Principle:

Principle #15Dynamics

3Volume of moving object

If light-emitting devices are made compact, then device size is reduced, but ease of manufacture deteriorates

Engineering Contradiction:

Improvedevice sizeVSAvoidease of manufacture

Core Design Contradiction:

Volume of moving objectVSEase of manufacture

Solution Approach 1:

The three light-emitting elements are merged into a single integrated light source device with a unified structure. The first, second, and third terminals are integrated into one device package, and the series coupling of light-emitting elements is implemented within a compact form factor, simplifying the overall manufacturing process while maintaining small device size.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The single light-emitting component performs multiple functions by emitting three different basic colors simultaneously. This multi-functional design allows the device to display various colors and hues by combining the emissions from the three light-emitting elements, eliminating the need for separate color emission systems.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The solution enables a compact configuration, enhances image quality, and reduces power consumption by independently driving light-emitting elements, allowing for efficient color emission and improved display performance.

Implementation Method 1

a first light-emitting element disposed in a first path from a first terminal to a second terminal, includes a first electrode of a first type and a second electrode of a second type coupled to the second terminal, and emits first basic color light

Methodology Applied

Scientific EffectLight-emitting diode effect: Light Emitting Diode

Data Source

PatentUS10789878B2Light source device, light-emitting device, and display device

Publication Date: 2020.09.29 SONY GROUP CORP

AI summary

A light source device according to the present disclosure includes: a first terminal, a second terminal, a third terminal, and a fourth terminal; a first light-emitting element that is disposed in a first path from the first terminal to the second terminal, includes a first electrode of a first type and a second electrode of a second type coupled to the second terminal, and emits first basic color light; a second light-emitting element that is disposed in a second path from the second terminal to the third terminal, includes a first electrode of the first type coupled to the second terminal and a second electrode of the second type, and emits second basic color light; and a third light-emitting element that is disposed in a third path from the second terminal to the fourth terminal, includes a first electrode of the first type coupled to the second terminal and a second electrode of the second type, and emits third basic color light.