Display Unit Pixel Circuit Selective Driving

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Solution Overview

Problem

Current display units face challenges in enhancing display quality and achieving novel image representation while displaying images based on image signals in a display region.

Innovation Solution

A display unit comprising a display panel with pixels arranged in a matrix, including an optical modulator or self-luminescent element, an electrochromic, electrophoretic, or electrowetting element, and a pixel circuit that selectively drives these elements to enhance image display and representation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional display units are used to display images based on image signals, then basic image display function is achieved, but display quality enhancement and novel image representation are limited

Engineering Contradiction:

Improvedisplay qualityVSAvoidimage representation capability

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The patent combines multiple display elements (self-luminescent elements and electrochromic elements) within the same pixel structure to achieve both basic image display and enhanced representation capabilities. The pixel circuit selectively drives different elements to provide versatile functionality from a unified structure.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

Each pixel is designed with multi-functionality by incorporating both self-luminescent elements for active emission and electrochromic elements for dynamic optical modulation. This universal design allows the display unit to perform multiple functions including standard image display, contrast enhancement, and novel image representation modes.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Adaptability or versatility

If multiple display elements are integrated into each pixel to enhance display quality, then image representation capability is improved, but device complexity increases

Engineering Contradiction:

Improveimage representation capabilityVSAvoidpixel structure complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The pixel is segmented into distinct functional units: self-luminescent elements for light emission, electrochromic elements for optical modulation, and dedicated pixel circuitry for selective driving. This segmentation allows each component to perform its specific function while maintaining overall system manageability.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The pixel circuit implements dynamic control by selectively driving different elements based on operational mode requirements. The system transitions between different operational states (self-luminescent mode, electrochromic mode, combined mode) to optimize performance for specific display tasks.

Inventive Principle:

Principle #15Dynamics

3Reliability

If selective driving of multiple elements is implemented to achieve novel image display, then display quality is enhanced, but control complexity increases

Engineering Contradiction:

Improvedisplay qualityVSAvoidcontrol complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The pixel circuit is pre-configured with dedicated drive paths and control logic for each element type. Operational modes are predetermined with specific driving patterns, allowing the system to transition between modes through simple control signals rather than complex real-time calculations.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The control system incorporates feedback mechanisms to monitor the operational state of display elements and adjust driving signals accordingly. This ensures synchronized operation and proper timing between self-luminescent and electrochromic elements, simplifying the control of multi-element pixels.

Inventive Principle:

Principle #23Feedback

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 allows for improved image display quality and novel representation by selectively driving organic electroluminescent elements and electrochromic or other enhancement elements, reducing manufacturing costs and enabling adjustable contrast and mode changes with low power consumption.

Implementation Method 1

one of an electrochromic element, an electrophoretic element, and an electrowetting element

Methodology Applied

Scientific EffectElectrochromism: Electrochromism

Implementation Method 2

one of an electrochromic element, an electrophoretic element, and an electrowetting element

Methodology Applied

Scientific EffectElectrophoresis: Electrophoresis

Implementation Method 3

one of an electrochromic element, an electrophoretic element, and an electrowetting element

Methodology Applied

Scientific EffectElectrowetting: Electrowetting

Implementation Method 4

Each of the pixels includes: one of an optical modulator and a self-luminescent element

Methodology Applied

Scientific EffectElectroluminescence: Electroluminescence

Data Source

PatentUS11043181B2Display unit

Publication Date: 2021.06.22 MAGNOLIA BLUE CORP

AI summary

A display unit includes a display panel that includes a plurality of pixels arranged in a matrix. Each of the pixels includes one of an optical modulator and a self-luminescent element, and one of an electrochromic element, an electrophoretic element, and an electrowetting element. Each of the pixels further includes a pixel circuit that is configured to selectively drive the one of the optical modulator and the self-luminescent element, and selectively drive the one of the electrochromic element, the electrophoretic element, and the electrowetting element.