Display Panel Light-Shielding Layout for Hidden Photosensitive Openings

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Solution Overview

Problem

Existing display technologies with pinhole imaging for photosensitive elements, such as cameras and infrared sensors, suffer from visible holes that degrade user experience due to size differences in openings, leading to visible differences under certain conditions.

Innovation Solution

A display panel design with a light-shielding layer featuring first and second type of openings, where the first type of openings have a smaller opening area than the second, and a second holding area for filling color resists to form a light path for photosensitive elements, reducing size differences and visibility under sunlight.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If holes are formed in functional layers to provide light path for photosensitive elements, then the operational requirements of photosensitive elements are met and screen-to-body ratio is increased, but the holes become visible under certain use conditions degrading user experience

Engineering Contradiction:

Improvelight path provision for photosensitive elementsVSAvoidvisibility of holes under sunlight

Core Design Contradiction:

Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

The patent applies local quality by creating different types of openings with different sizes and characteristics in the light-shielding layer. Specifically, first openings are provided for color resists and second openings are provided for filling color resists, with the second openings having different area characteristics. This localized differentiation allows each opening type to serve its specific function while collectively reducing visibility issues under sunlight conditions.

Inventive Principle:

Principle #3Local quality

2Ease of manufacture

If uniform openings are used in light-shielding layer, then manufacturing is simplified, but visible differences between openings occur under sunlight reducing user experience

Engineering Contradiction:

Improvesimplicity of light-shielding layer fabricationVSAvoidvisible differences between openings

Core Design Contradiction:

Ease of manufactureVSObject-affected harmful factors

Solution Approach 1:

The patent segments the openings in the light-shielding layer into different types: first openings for color resists and second openings for filling color resists. This segmentation allows each type of opening to be optimized for its specific purpose while collectively achieving uniform visual appearance under sunlight, thus resolving the contradiction between manufacturing simplicity and visual uniformity.

Inventive Principle:

Principle #1Segmentation

3Measurement precision

If larger openings are used to improve light collection for photosensitive elements, then sensitivity is improved, but the openings become more visible under sunlight

Engineering Contradiction:

Improvelight collection efficiency and sensitivityVSAvoidvisibility of openings

Core Design Contradiction:

Measurement precisionVSObject-affected harmful factors

Solution Approach 1:

The patent changes the parameters of the openings by providing two distinct types with different characteristics. The first openings and second openings have different area parameters, allowing optimization of light collection for photosensitive elements while controlling visibility under sunlight. This parameter differentiation enables simultaneous achievement of good light collection and reduced visibility.

Inventive Principle:

Principle #35Parameter changes

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 design minimizes visible differences between openings, enhancing user experience by maintaining light efficiency and sensitivity for photosensitive elements while ensuring full-screen functionality.

Implementation Method 1

a light-shielding layer disposed on a side of the light-emitting unit away from the substrate

Methodology Applied

Scientific EffectLight shielding: Absorption (EM radiation)

Implementation Method 2

first holding areas and the second type of openings are configured to dispose first color resists; the second holding area is configured to dispose a filling color resist

Methodology Applied

Scientific EffectOptical filtering: Filter (optical)

Data Source

PatentUS12507510B2Display panel and display device with improved light collection for photosensitive functional element

Publication Date: 2025.12.23 SHANGHAI TIANMA MICRO ELECTRONICS CO LTD

AI summary

A display panel and a display device are provided. The display panel includes a substrate; a light-emitting unit disposed on one side of the substrate; and a light-shielding layer disposed a side of the light-emitting unit away from the substrate. The light-shielding layer includes a first type of openings and a second type of openings; each of the first type of openings includes a first holding area and a second holding area corresponding the first holding area; first holding areas and the second type of openings are configured to dispose first color resists; the second holding area is configured to dispose a filling color resist; and an opening area of the first holding area is smaller than an opening area of each of the second type of openings.