Display Panel Compensation Structure for Under-Screen Camera Heat Dissipation

Solution Overview

Problem

The challenge of integrating a front-facing camera under a full-screen display panel is exacerbated by poor heat dissipation in regions with lower pixel circuit density, affecting light-emitting elements and display uniformity.

Innovation Solution

Incorporating a compensation structure with a compensation film in the display panel's first display region, which overlaps with the anode of light-emitting elements to enhance heat dissipation, ensuring similar heat dissipation capacity and light transmission effectiveness as the second display region.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Illumination intensity

If the distribution density of pixel circuits in the first display region is reduced to allow light transmission for under-screen cameras, then light transmission effectiveness is improved, but heat dissipation capacity deteriorates

Engineering Contradiction:

Improvelight transmission effectivenessVSAvoidheat dissipation capacity

Core Design Contradiction:

Illumination intensityVSTemperature

Solution Approach 1:

The patent applies local quality by differentiating the structure between the first display region (with under-screen camera) and the second display region. In the first display region, the pixel circuit distribution density is intentionally reduced to improve light transmission, while in the second display region, the normal pixel circuit density is maintained. This localized structural differentiation resolves the contradiction by allowing each region to optimize for its specific function.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The patent introduces a compensation structure as an intermediary element in the first display region. This compensation structure includes a compensation film and is positioned to make up for the heat dissipation capacity loss caused by reduced pixel circuit density. The compensation structure acts as a mediator that enables both low pixel circuit density (for light transmission) and adequate heat dissipation to coexist.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Illumination intensity

If the distribution density of pixel circuits in the first display region is reduced, then light transmission is improved, but display uniformity deteriorates

Engineering Contradiction:

Improvelight transmissionVSAvoiddisplay uniformity

Core Design Contradiction:

Illumination intensityVSStability of the object's composition

Solution Approach 1:

The patent applies local quality by differentiating the structure between the first display region (with under-screen camera) and the second display region. In the first display region, the pixel circuit distribution density is intentionally reduced to improve light transmission, while in the second display region, the normal pixel circuit density is maintained. This localized structural differentiation resolves the contradiction by allowing each region to optimize for its specific function.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The patent introduces a compensation structure as an intermediary element in the first display region. This compensation structure includes a compensation film and is positioned to make up for the heat dissipation capacity loss caused by reduced pixel circuit density. The compensation structure acts as a mediator that enables both low pixel circuit density (for light transmission) and adequate heat dissipation to coexist.

Inventive Principle:

Principle #24Intermediary (Mediator)

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 compensation structure improves heat dissipation in the first display region, maintaining consistent light-emitting performance and display uniformity while allowing for a good light-transmitting effect, thus supporting the integration of sensors like cameras under the screen.

Implementation Method 1

the compensation structure improves heat dissipation in the first display region

Methodology Applied

Scientific EffectThermal conduction: Conduction (thermal)

Data Source

PatentUS12514047B2Display panel and display device

Publication Date: 2025.12.30 WUHAN TIANMA MICRO ELECTRONICS CO LTD

AI summary

Provided are a display panel and a display device. The display panel includes a first display region and a second display region. The display panel further includes a pixel circuit, and the pixel circuit is configured to drive a light-emitting element to emit light. The distribution density of the pixel circuit in the first display region is less than the distribution density of the pixel circuit in the second display region. The first display region includes a compensation structure, and the compensation structure includes at least one layer of compensation film. The first display region further includes multiple first light-emitting elements, and the multiple first light-emitting elements each includes an anode. The anode at least partially overlaps the compensation structure in the first direction, and the first direction is perpendicular to a plane in which a substrate is located.