Pixel Shading Structure for Privacy Display Without Special Backlights

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing display technologies face challenges in achieving privacy display modes with high power consumption, low brightness, and high manufacturing costs, especially for small displays, and require complex manufacturing processes.

Innovation Solution

A pixel structure comprising a self-illuminating element and a shading layer, where the shading layer is controlled by adjusting the voltage of the shading electrode to achieve privacy display without a special backlight module, offering low power consumption, high brightness, and simplified manufacturing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a special backlight module is formed in the liquid crystal display to achieve privacy display, then privacy display function is improved, but power consumption increases and brightness decreases

Engineering Contradiction:

Improveprivacy display functionVSAvoidpower consumption

Core Design Contradiction:

Adaptability or versatilityVSUse of energy by moving object

Solution Approach 1:

The patent extracts the privacy display function from the traditional backlight module approach and implements it through a独立的 shading layer controlled by a shading electrode. This separates the privacy control function from the illumination function, allowing independent optimization of both, thereby reducing power consumption while maintaining brightness.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent introduces a shading layer as an intermediary element between the liquid crystal display and the viewer. This shading layer, controlled by voltage applied to the shading electrode, mediates the light transmission to achieve privacy display without requiring modifications to the backlight module, thus avoiding the power consumption and brightness issues associated with special backlight designs.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Adaptability or versatility

If a special backlight module is formed in the liquid crystal display to achieve privacy display, then privacy display function is improved, but manufacturing cost increases

Engineering Contradiction:

Improveprivacy display functionVSAvoidmanufacturing cost

Core Design Contradiction:

Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The shading layer and shading electrode structure serves multiple functions: it provides privacy display control, can be integrated with existing display manufacturing processes, and works with standard liquid crystal display components. This multi-functionality reduces the need for specialized expensive components and simplifies manufacturing.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent uses a shading layer that can be manufactured using similar processes and materials as existing display components, rather than requiring a completely new special backlight module. This approach leverages existing manufacturing capabilities and reduces development and production costs.

Inventive Principle:

Principle #26Copying

3Adaptability or versatility

If additional auxiliary pixels are added to the display to achieve privacy display, then privacy display function is improved, but device complexity and manufacturing cost increase

Engineering Contradiction:

Improveprivacy display functionVSAvoiddisplay structure

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent merges the privacy control function with the existing display structure by integrating the shading layer and shading electrode into the pixel structure. Instead of adding separate auxiliary pixels, the shading control is combined with the existing pixel elements, reducing overall device complexity while achieving privacy display functionality.

Inventive Principle:

Principle #5Merging (Combining)

4Adaptability or versatility

If additional auxiliary pixels are added to the display to achieve privacy display, then privacy display function is improved, but manufacturing cost increases

Engineering Contradiction:

Improveprivacy display functionVSAvoidmanufacturing cost

Core Design Contradiction:

Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

Inventive Principle:

Principle #5Merging (Combining)

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 effective privacy display with reduced power consumption and manufacturing costs, making it suitable for small displays without the need for complex processes or special backlight modules.

Implementation Method 1

It may control (or switch) the shading layer by adjusting the voltage of the shading electrode to achieve a state of privacy display

Methodology Applied

Scientific EffectElectro-optic effect: Electro-Optic Effects

Data Source

PatentUS11927870B2Pixel structure and display device using the same

Publication Date: 2024.03.12 ACER INC

AI summary

A pixel structure is provided. The pixel structure includes a display unit and a shading unit, and at least a portion of the shading unit is disposed on the display unit. The display unit includes a pixel switch element and a self-illuminating element, and the self-illuminating element is electrically connected to the pixel switch element. The shading unit includes a shading electrode and a shading layer, and the shading layer is disposed on the self-illuminating element and electrically connected to the shading layer.