Field-Sequential Display Using Invisible Light for Pixel Addressing

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Solution Overview

Problem

Conventional touch panels face high computational complexity and increased costs due to the need for complex algorithms to accurately determine pixel positions, which affects their operational efficiency and implementation.

Innovation Solution

A field-sequential display apparatus that uses invisible light to transmit pixel address information, allowing the display system to determine the corresponding pixel and control its display states without relying on complex algorithms, by employing a receiving unit, transmission unit, and processing unit to process the address information carried by the invisible light.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If conventional touch panel technologies (resistive, capacitive, optical) are used to detect touch position, then the touch panel can provide touch input functionality, but the computational complexity increases and cost increases due to the need for complex algorithms to recognize pixel position

Engineering Contradiction:

Improvetouch input functionalityVSAvoidcomputational complexity

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The patent replaces the conventional computational approach (algorithm-based pixel position recognition) with an optical field-sequential display approach. Each pixel emits invisible light in sequence, and the touch panel detects the temporal pattern of invisible light to directly determine pixel position without complex algorithms, substituting mechanical/computational processing with optical temporal encoding.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent changes the parameter used for position identification from spatial coordinates requiring algorithmic calculation to temporal parameters (time sequence of invisible light emission). By encoding pixel address information in the time domain through field-sequential invisible light emission, the system simplifies position detection to temporal pattern recognition rather than complex spatial algorithm processing.

Inventive Principle:

Principle #35Parameter changes

2Measurement precision

If complex algorithms are used to recognize pixel position in conventional touch panels, then accurate position information can be obtained, but the implementation difficulty increases

Engineering Contradiction:

Improvepixel position accuracyVSAvoidimplementation difficulty

Core Design Contradiction:

Measurement precisionVSEase of manufacture

Solution Approach 1:

The patent substitutes complex algorithmic processing with a straightforward optical detection system. The field-sequential invisible light emission provides direct temporal encoding of pixel addresses, allowing position accuracy to be achieved through simple temporal pattern detection rather than complex algorithms, thereby reducing implementation difficulty while maintaining precision.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Ease of operation

If conventional touch panel technologies are used, then touch input functionality is achieved, but the overall cost increases

Engineering Contradiction:

Improvetouch input functionalityVSAvoidoverall cost

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The patent replaces expensive computational algorithms and processing hardware with a simpler optical detection system. By using field-sequential invisible light emission to directly encode pixel addresses in the temporal domain, the system reduces the need for complex processing units and algorithms, thereby lowering overall system cost while maintaining touch input functionality.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

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

This approach simplifies the computational complexity of pixel positioning, reducing the overall cost and implementation difficulty of touch panels by using invisible light to transmit and process pixel address information directly, enabling efficient and accurate pixel determination and control.

Implementation Method 1

Each of the pixels is adapted to present a plurality of display states comprising at least one colored light and an invisible light. The invisible light is adapted to transmit address information corresponding to the pixel.

Methodology Applied

Scientific EffectLight emission: Light

Data Source

PatentUS8269747B2Field-sequential display apparatus and display system capable of sensing pixel address

Publication Date: 2012.09.18 AU OPTRONICS CORP

AI summary

A field-sequential display apparatus and a display system which is capable of sensing pixel address are provided. The field-sequential display apparatus comprises a plurality of pixels, each of which is adapted to present a plurality of display states. The display states includes at least one colored light and an invisible light, wherein the at last one colored light and invisible light are alternately displayed, and the invisible light is adapted to transmit the address information of the pixel.