Display Substrate Light Transmission Holes Camera Interference

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Solution Overview

Problem

During video communication, users often inadvertently focus on the display device instead of the camera, leading to distorted images as light from the display panel interferes with the camera's view of the user.

Innovation Solution

A display substrate with a light emitting element layer featuring pixel defining layers and light transmission holes, where the pixel defining layer includes opaque light shields and light transmissive areas, ensuring that light from the display panel only passes through specific holes to reach the camera, preventing interference and maintaining clear image capture.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If the display panel is made fully light transmissive to allow camera capture, then the camera can capture images, but light from the display panel interferes with the camera view causing distorted images

Engineering Contradiction:

Improvecamera integrationVSAvoidlight interference

Core Design Contradiction:

Ease of manufactureVSObject-affected harmful factors

Solution Approach 1:

The pixel defining layer is segmented into multiple functional regions: pixel openings for light emitting elements, light transmission holes for camera light access, and opaque light shields for interference blocking. This segmentation allows simultaneous achievement of camera capture and interference prevention

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different regions of the pixel defining layer are assigned different optical properties: transparent regions (pixel openings and light transmission holes) allow light passage, while opaque regions (light shields) block light. This local differentiation resolves the contradiction by allowing light transmission where needed and blocking where harmful

Inventive Principle:

Principle #3Local quality

2Reliability

If opaque light shields are added to block light interference, then image distortion is prevented, but the device structure becomes more complex

Engineering Contradiction:

Improveimage qualityVSAvoidpixel defining layer structure

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The pixel defining layer serves multiple functions simultaneously: it defines pixel boundaries, allows light emission through pixel openings, enables camera capture through light transmission holes, and blocks interference through opaque light shields. This multi-functionality reduces overall device complexity despite adding structural elements

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The light transmission holes and opaque light shields are integrated into the same pixel defining layer structure, combining multiple optical control functions into a single layer rather than requiring separate components for each function

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

This configuration ensures that the image captured by the camera is not distorted, allowing effective video communication by directing user attention to the camera while preventing light from the display panel from interfering with the camera's view.

Implementation Method 1

each of the plurality of light transmission holes penetrates through the pixel defining layer in a thickness direction of the pixel defining layer, portions of the pixel defining layer not provided with the plurality of pixel openings or the plurality of light transmission holes are opaque light shields

Methodology Applied

Scientific EffectLight transmission: Light

Implementation Method 2

portions of the pixel defining layer not provided with the plurality of pixel openings or the plurality of light transmission holes are opaque light shields

Methodology Applied

Scientific EffectLight blocking: Absorption (EM radiation)

Data Source

PatentUS10937845B2Display substrate and method for manufacturing the same, display panel and method for manufacturing the same, and display device

Publication Date: 2021.03.02 BOE TECHNOLOGY GROUP CO LTD

AI summary

The present disclosure provides a display substrate, which includes a base substrate and a light emitting element layer, which is on a side of the base substrate and includes a pixel defining layer and a plurality of light emitting elements. The pixel defining layer includes a plurality of pixel openings and a plurality of light transmission holes, and the plurality of light emitting elements are in the plurality of pixel openings, respectively. Each of the plurality of light transmission holes penetrates through the pixel defining layer in a thickness direction of the pixel defining layer. Portions of the pixel defining layer not provided with the plurality of pixel openings or the plurality of light transmission holes are opaque light shields, and a portion of the display substrate overlapping each of the plurality of light transmission holes in the thickness direction is light transmissive.