Display Panel Capacitor Structure for Driving Transistor Light Shielding

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Solution Overview

Problem

Display panels exhibit poor display effects and fail to meet high-quality display requirements.

Innovation Solution

A display panel design featuring conductive layers with a first capacitor providing bottom light-shielding for the driving transistor, enhancing stability by mitigating light irradiation effects.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional display panel structures are used, then manufacturing is simpler, but display effect and image quality are poor

Engineering Contradiction:
Improvedisplay effectVSAvoidconductive layer structure
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent combines the first capacitor and second capacitor into a single integrated capacitor structure with first and second conductive layers forming capacitor electrodes. This merging approach improves display effect and image quality while avoiding the need for completely separate capacitor structures, thus managing complexity through functional integration rather than complete structural separation.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The conductive layers serve multiple functions: they form the electrodes of the first capacitor, the electrodes of the second capacitor, and provide light-shielding for the driving transistor. By making the conductive layers multi-functional, the patent improves display quality without proportionally increasing device complexity, as the same structural elements perform multiple roles.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Reliability

If light-shielding structures are added to protect the driving transistor, then stability improves, but device complexity increases

Engineering Contradiction:
Improvestability of driving transistorVSAvoidstructure complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The first conductive layer and second conductive layer serve dual purposes: they form the capacitor electrodes for charge storage and simultaneously provide light-shielding for the driving transistor. This multi-functionality approach improves transistor stability without adding separate dedicated light-shielding structures, thus managing complexity efficiently.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent converts the potentially harmful light irradiation to the driving transistor into a beneficial function by using the capacitor's conductive layers as light-shielding elements. The same structures that store electrical charge also block harmful light, transforming a design constraint into a functional advantage.

Inventive Principle:
Principle #22Blessing in disguise (Convert harm into benefit)

3Reliability

If more conductive layers are stacked to improve display performance, then display effect improves, but manufacturing complexity increases

Engineering Contradiction:
Improvedisplay qualityVSAvoidmanufacturing process
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

The patent merges the functions of multiple capacitors into an integrated structure where the first conductive layer and second conductive layer form both the first capacitor and second capacitor electrodes. This consolidation improves display quality through enhanced capacitance and light-shielding while simplifying manufacturing by reducing the number of discrete capacitor structures that would need to be fabricated and assembled.

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

Improves display effect by stabilizing the driving transistor and enhancing screen reliability.

Implementation Method 1

the first capacitor is located below the driving transistor, thereby enabling the first plate of the first capacitor to provide bottom light-shielding for the driving transistor

Methodology Applied
Scientific EffectLight-shielding: Absorption (EM radiation)

Data Source

PatentUS20260068379A1Display panel and display device
Publication Date: 2026.03.05 BEIJING VISIONOX TECHNOLOGY CO LTD
  • US20260068379A1 patent drawing
  • US20260068379A1 patent drawing
  • US20260068379A1 patent drawing

AI summary

The embodiments of the present application disclose a display panel and a display device. The display panel includes: a substrate, a plurality of conductive layers stacked on a side of the substrate, and at least one pixel circuit including a driving transistor and a first capacitor; where the plurality of conductive layers stacked on the side of the substrate include a first conductive layer and a second conductive layer, and the second conductive layer is located on a side of the first conductive layer away from the substrate, enhancing the stability of a screen, and thus improving the display effect.