Pixel Circuit Layout for Shared Scan Driving of Tunable Circuits

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Solution Overview

Problem

Conventional electronic devices with tunable circuits on non-rectangular substrates face wiring and transistor layout difficulties, leading to inefficient operation due to crowded layout and differing tunable characteristics.

Innovation Solution

The electronic device incorporates a pixel circuit with scan transistors, de-multiplexer transistors, and storage capacitors to efficiently drive tunable circuits by sharing scan lines, reducing the number of scan lines and enabling interlaced scanning for independent operation of tunable circuits.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If multiple scan lines are used to drive each tunable circuit independently, then the driving efficiency and operation speed are improved, but the wiring complexity and layout difficulty increase significantly

Engineering Contradiction:

Improvedriving efficiencyVSAvoidwiring complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

Multiple tunable circuits share a common scan line, merging the control signal path to reduce wiring complexity while maintaining independent operation through individual control signals

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

A single scan line serves multiple tunable circuits simultaneously, making the scan line multi-functional and reducing the total number of scan lines required

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Area of stationary object

If tunable circuits are densely arranged on non-rectangular substrates, then the area utilization is improved, but the layout difficulty and wiring congestion increase

Engineering Contradiction:

Improvearea utilizationVSAvoidlayout difficulty

Core Design Contradiction:

Area of stationary objectVSEase of manufacture

Solution Approach 1:

The array of tunable circuits is divided into multiple groups, with each group sharing common control signals, allowing flexible arrangement on non-rectangular substrates while simplifying individual group layouts

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different groups of tunable circuits are assigned different control signal configurations, allowing local optimization of wiring routes and transistor layouts for each group to suit the non-rectangular substrate shape

Inventive Principle:

Principle #3Local quality

3Device complexity

If the number of scan lines is reduced by sharing, then the wiring complexity is decreased, but the ability to independently control each tunable circuit is compromised

Engineering Contradiction:

Improvewiring complexityVSAvoidindependent control capability

Core Design Contradiction:

Device complexityVSEase of operation

Solution Approach 1:

Control signals act as intermediaries between the shared scan line and individual tunable circuits, enabling independent control of each circuit while using a common scan line for signal distribution

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS12451059B1Electronic device

Publication Date: 2025.10.21 INNOLUX CORP

AI summary

An electronic device of the disclosure includes a plurality of electronic units. Each of the plurality of electronic units includes a pixel circuit and a plurality of tunable circuits. The plurality of tunable circuits is coupled to the pixel circuit. The pixel circuit includes at least one scan transistor, a plurality of de-multiplexer transistors, and a plurality of storage capacitors. The plurality of de-multiplexer transistors is coupled to the at least one scan transistor. The plurality of storage capacitors is coupled to a data line through the at least one scan transistor and the plurality of de-multiplexer transistors.