Display Panel Verification Code in Narrow Bezel via Light Blocking Layer

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Solution Overview

Problem

Liquid crystal display devices with narrow bezel structures face challenges in forming identification marks or verification codes due to insufficient space, which can lead to increased bezel width and limited positioning options for these codes.

Innovation Solution

A display panel design that incorporates a verification code part in the peripheral area, overlapping with a light blocking layer, allowing for the formation of identification codes without increasing the bezel width, and enabling flexible positioning through the use of a reflective pattern or metal layer, ensuring the code is not visible when the light blocking layer covers it.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Length of stationary object

If a verification code part is formed in a narrow bezel structure, then the bezel width is reduced, but there is insufficient space to form the identification mark or verification code

Engineering Contradiction:

Improvebezel widthVSAvoidspace for verification code

Core Design Contradiction:

Length of stationary objectVSArea of stationary object

Solution Approach 1:

The verification code part is positioned in the peripheral area of the display panel by utilizing the light blocking layer area, effectively using the vertical dimension (depth) of the panel structure rather than expanding the horizontal bezel width. This allows the verification code to be formed without increasing the visible bezel area.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

Solution Approach 2:

The verification code part is nested within the light blocking layer area, which is already present in the peripheral region of the display panel. This nesting approach allows the verification code to be incorporated into the existing structural footprint without requiring additional space.

Inventive Principle:

Principle #7Nested doll (Nesting)

2Area of stationary object

If the verification code part is formed in the pad area, then there is sufficient space, but the bezel width increases

Engineering Contradiction:

Improvespace for verification codeVSAvoidbezel width

Core Design Contradiction:

Area of stationary objectVSLength of stationary object

Solution Approach 1:

Instead of using the horizontal pad area which会增加bezel width, the verification code is positioned in the peripheral area utilizing the light blocking layer, effectively moving to a different spatial dimension (vertical integration) to accommodate the verification code.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

3Length of stationary object

If the verification code part is formed in the light blocking area, then the bezel width is maintained, but the code may be obscured by the light blocking layer

Engineering Contradiction:

Improvebezel widthVSAvoidvisibility of verification code

Core Design Contradiction:

Length of stationary objectVSLoss of information

Solution Approach 1:

A reflective pattern is formed in the verification code part, which changes the optical properties of the code area. This reflective characteristic allows the verification code to be visible even when positioned in the light blocking area, as the reflective pattern reflects light differently than the surrounding light blocking layer.

Inventive Principle:

Principle #32Color changes

Solution Approach 2:

The optical parameters of the verification code area are changed by forming a reflective pattern, which alters how light interacts with the verification code. This parameter change ensures visibility of the code despite its position in the light blocking layer area.

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

This solution allows for the formation of verification codes in liquid crystal display devices with narrow bezel structures without increasing the bezel width, providing flexible positioning and maintaining the aesthetic and functional integrity of the display panel.

Implementation Method 1

a light blocking layer is disposed to overlap the verification code part when viewed in a plan view

Methodology Applied

Scientific EffectLight blocking: Absorption (EM radiation)

Implementation Method 2

since the verification code part includes a reflective pattern, the verification code part may be formed in the peripheral area rather than the pad area

Methodology Applied

Scientific EffectReflection: Reflection

Data Source

PatentUS10228583B2Display panel including a verification code and display device having the same

Publication Date: 2019.03.12 SAMSUNG DISPLAY CO LTD

AI summary

A display panel including a first base substrate including a display area and a peripheral area adjacent to the display area, a signal line disposed on the first base substrate and disposed in the display area, a thin film transistor disposed on the first base substrate and disposed in the display area, a verification code part including a metal layer, the metal layer disposed on the first base substrate and disposed in the peripheral area; a second base substrate facing the first base substrate, and a light blocking layer overlapped with the peripheral area in a plan view, in which the metal layer includes a code portion having an identification mark, and a peripheral portion adjacent to the code portion, and the light blocking layer overlaps at least the peripheral portion of the metal layer in a plan view.