Display Device Bezel Reduction via Gate Driver Integration

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Solution Overview

Problem

Current display devices have limited display area due to significant bezel areas, which aesthetically and functionally hinder the enlargement of the visible display space.

Innovation Solution

A display device design that reduces the bezel area by incorporating a gate driver and diffraction pattern layer within the display panel's second display area, allowing for a larger active display area while maintaining image quality and reducing the perceived non-display area.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Area of moving object

If the bezel area is reduced to enlarge the display area, then the display area is increased, but the gate driver cannot be properly accommodated within the remaining space

Engineering Contradiction:
Improvedisplay areaVSAvoidgate driver accommodation
Core Design Contradiction:
Area of moving objectVSDevice complexity

Solution Approach 1:

The patent utilizes the vertical dimension by stacking the diffraction pattern layer above the pixel structure in the second display area. This three-dimensional arrangement allows the gate driver to be integrated within the display area without increasing the horizontal footprint, thereby enabling bezel reduction while accommodating all necessary driving components.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

Solution Approach 2:

The patent introduces a diffraction pattern layer as an intermediary element that serves dual purposes: it compensates for luminance and color differences in the second display area where the gate driver is located, and it enables the gate driver to be positioned within the display area by providing an additional functional layer that masks the driver's presence.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Area of moving object

If the gate driver is disposed in the second display area to reduce bezel area, then the display area is enlarged, but luminance and color differences occur in the second display area

Engineering Contradiction:
Improvedisplay areaVSAvoidluminance uniformity
Core Design Contradiction:
Area of moving objectVSIllumination intensity

Solution Approach 1:

The patent converts the harmful effect of the gate driver's presence (which causes luminance and color differences) into a beneficial effect by introducing a diffraction pattern layer. This layer diffracts light to compensate for the不均匀ities caused by the gate driver, thereby improving overall luminance uniformity while maintaining the space-saving configuration.

Inventive Principle:
Principle #22Blessing in disguise (Convert harm into benefit)

Solution Approach 2:

The diffraction pattern layer is selectively applied only to the second display area where the gate driver is located, providing localized compensation for luminance and color differences. This targeted approach ensures that the optical compensation is precisely where needed without affecting other display areas.

Inventive Principle:
Principle #3Local quality

3Illumination intensity

If the diffraction pattern layer is added to compensate for luminance and color differences, then image quality is improved, but the device structure becomes more complex

Engineering Contradiction:
Improveimage qualityVSAvoidlayer structure
Core Design Contradiction:
Illumination intensityVSDevice complexity

Solution Approach 1:

The diffraction pattern layer serves multiple functions simultaneously: it compensates for luminance and color differences in the second display area, enables the gate driver to be positioned within the display area, and maintains overall display uniformity. By consolidating these multiple functions into a single layer, the patent minimizes structural complexity while achieving comprehensive performance improvement.

Inventive Principle:
Principle #6Universality (Multi-functionality)

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 solution effectively enlarges the display area by minimizing the bezel area, enhancing the aesthetic appeal and operational efficiency of the device while maintaining image quality and luminance.

Implementation Method 1

a diffraction pattern layer including a plurality of second diffraction patterns disposed on the second pixels

Methodology Applied
Scientific EffectDiffraction: Diffraction

Data Source

PatentUS11594172B2Display device having an enlarged display area
Publication Date: 2023.02.28 SAMSUNG DISPLAY CO LTD
  • US11594172B2 patent drawing
  • US11594172B2 patent drawing
  • US11594172B2 patent drawing

AI summary

Disclosed is a display device. The display device includes a display panel having a base layer, a circuit element layer disposed on the base layer, a display panel including a plurality of first pixels disposed in a first display area, and a plurality of second pixels disposed in a second display area adjacent to the first display area. The display device further includes a gate driver disposed in the second display area of the display panel and configured to drive the first and second pixels and a diffraction pattern layer including a plurality of second diffraction patterns disposed on the second pixels.