Display Device Module Integration Through Light-Transmitting Layers

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Solution Overview

Problem

Existing display devices face challenges in incorporating modules such as cameras and sensors without increasing the size of the bezel part, which leads to visibility issues and potential deterioration of light sensitivity.

Innovation Solution

A display device design that incorporates modules within the display area by using a back plate with openings and flexible substrates with holes, allowing light transmission through thin-film transistors and wire formation layers, thereby positioning modules inside the display area without increasing bezel size and enhancing light sensitivity.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If modules such as cameras and sensors are disposed outside the display area, then module functionality is achieved, but the bezel size increases and modules become visible

Engineering Contradiction:

Improvemodule functionalityVSAvoidbezel size

Core Design Contradiction:

Adaptability or versatilityVSArea of stationary object

Solution Approach 1:

The patent moves modules from the traditional 2D plane (outside display area) into the 3D space by receiving them within openings in the back plate, allowing modules to be positioned in the display area without increasing bezel size. This dimensional transition enables modules to occupy space within the display area rather than adding to the external dimensions.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

Solution Approach 2:

The patent embeds modules within the display area by creating openings in the back plate and receiving modules inside these openings. The modules are nested within the display structure, specifically within the active area, allowing them to be integrated into the display device without increasing the overall bezel dimensions.

Inventive Principle:

Principle #7Nested doll (Nesting)

2Adaptability or versatility

If modules are disposed outside the display area, then module functionality is achieved, but modules become visible from outside

Engineering Contradiction:

Improvemodule functionalityVSAvoidmodule visibility

Core Design Contradiction:

Adaptability or versatilityVSObject-generated harmful factors

Solution Approach 1:

Inventive Principle:

Principle #7Nested doll (Nesting)

3Area of stationary object

If modules are positioned in the display area with openings in back plate, then bezel size is maintained, but light transmission to modules must be optimized

Engineering Contradiction:

Improvebezel sizeVSAvoidlight sensitivity

Core Design Contradiction:

Area of stationary objectVSUse of energy by moving object

Solution Approach 1:

The patent divides the back plate into multiple regions: opening regions that allow light transmission to modules, and light-shielding regions that prevent unwanted light. This segmentation enables precise control of light paths, ensuring that light reaches modules through designated openings while other areas block stray light to maintain image quality.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The back plate is designed with spatially varying properties: opening regions with high light transmittance for module illumination, and light-shielding regions with low transmittance for image quality. This local differentiation of optical properties allows simultaneous optimization of light transmission to modules and prevention of stray light interference.

Inventive Principle:

Principle #3Local quality

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

Prevents the increase in bezel size and maintains module functionality while reducing light color shift and improving sensitivity by integrating modules within the display area.

Implementation Method 1

the module receives light from outside through the multiple light-transmitting areas, the multiple holes, and the opening

Methodology Applied

Scientific EffectLight transmission: Light

Data Source

PatentUS12399536B2Display device

Publication Date: 2025.08.26 LG DISPLAY CO LTD

AI summary

The present disclosure relates to a display device including: a flexible substrate including an active area and a bezel area disposed outside the active area, the active area including a module area in which multiple holes are provided; a back plate disposed on one surface of the flexible substrate, and being provided with an opening disposed in a manner that corresponds to the module area; a thin-film transistor and wire formation layer disposed on another surface of the flexible substrate, and including multiple light-transmitting areas disposed in a manner that corresponds to the opening; and a module received within the opening of the back plate, wherein the module receives light from outside through the multiple light-transmitting areas, the multiple holes, and the opening.