Self-luminous Reflective Pixel Structure for Versatile Display Modes

Solution Overview

Problem

Existing transflective display devices compromise the display area and degrade the display effect due to the separate configurations of transmissive and reflective display structures within a pixel unit.

Innovation Solution

A self-luminous reflective pixel structure is introduced, comprising a first electrode for reflecting light, a self-luminous layer, a second electrode, and a reflected light control layer, which allows for both self-luminous and reflective modes within a single pixel, ensuring equal effective display areas and improved display efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a transmissive display structure and a reflective display structure are separately disposed in different portions of a pixel unit, then both transmissive and reflective display functions are achieved, but the actual display area of the display region decreases and the display effect degrades

Engineering Contradiction:

Improvedisplay mode versatilityVSAvoiddisplay area

Core Design Contradiction:

Adaptability or versatilityVSArea of stationary object

Solution Approach 1:

The patent merges the transmissive display structure and reflective display structure into a single integrated pixel structure. The pixel unit includes a first electrode, a self-luminous layer, a second electrode, and a reflected light control layer, where the same physical structure can operate in either transmissive or reflective mode depending on the state of the reflected light control layer, thereby maintaining full display area while achieving mode versatility.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The pixel unit is designed as a universal structure that can perform both transmissive and reflective display functions. By using the same electrode and self-luminous layer for both modes, and controlling the reflected light control layer to switch between transparent and reflective states, the display device achieves multi-functionality without sacrificing display area.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Adaptability or versatility

If a transmissive display structure and a reflective display structure are separately disposed in different portions of a pixel unit, then both transmissive and reflective display functions are achieved, but the display effect degrades

Engineering Contradiction:

Improvedisplay mode versatilityVSAvoiddisplay effect

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The patent merges the transmissive display structure and reflective display structure into a single integrated pixel structure. The pixel unit includes a first electrode, a self-luminous layer, a second electrode, and a reflected light control layer, where the same physical structure can operate in either transmissive or reflective mode depending on the state of the reflected light control layer, thereby maintaining full display area while achieving mode versatility.

Inventive Principle:

Principle #5Merging (Combining)

3Illumination intensity

If transparent materials are used for the self-luminous layer and second electrode, then light transmission is improved for self-luminous mode, but the structural complexity increases

Engineering Contradiction:

Improvelight transmissionVSAvoidstructural complexity

Core Design Contradiction:

Illumination intensityVSDevice complexity

Solution Approach 1:

The pixel unit is designed as a universal structure that can perform both transmissive and reflective display functions. By using the same electrode and self-luminous layer for both modes, and controlling the reflected light control layer to switch between transparent and reflective states, the display device achieves multi-functionality without sacrificing display area.

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 self-luminous reflective pixel structure maintains the display area and enhances the display effect by allowing both self-luminous and reflective modes to operate effectively, with the ability to switch between modes based on ambient light conditions, thereby optimizing the display performance.

Implementation Method 1

A voltage difference between the liquid crystal control electrode layer and the second electrode is capable of deflecting the liquid crystal in the reflected light modulation liquid crystal layer

Methodology Applied

Scientific EffectLiquid crystal deflection: Liquid Crystals

Implementation Method 2

An electrostatic force generated between the reflection clearance control electrode layer and the first electrode is capable of controlling the first electrode to move so as to change the size of the spatial clearance between the reflection clearance control electrode layer and the second electrode

Methodology Applied

Scientific EffectElectrostatic force: Electrostatics

Implementation Method 3

a first electrode capable of reflecting lights

Methodology Applied

Scientific EffectLight reflection: Reflection

Data Source

PatentUS9323114B2Self-luminous reflective pixel structure, display panel, and display device

Publication Date: 2016.04.26 BEIJING BOE DISPLAY TECH CO LTD

AI summary

A self-luminous reflective pixel structure, a display panel and a display device. The pixel structure includes a first electrode capable of reflecting light, a self-luminous layer disposed over the first electrode, a second electrode disposed over the self-luminous layer, and a reflected light control layer disposed over the second electrode. A self-luminous structure and a reflective structure can be formed in a single pixel with the pixel structure.