Display Panel Light Absorption Layout for Low-Reflection Narrow Bezels
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Solution Overview
Problem
Existing display apparatuses face challenges in minimizing the bezel area and preventing image quality degradation due to external light reflection, especially in small portable devices where a large screen is desired without compromising appearance or image quality.
Innovation Solution
The display apparatus features a configuration with a color filter substrate and array substrate in reverse order, incorporating a light absorption layer below the data lines to absorb external light and minimize reflection, using a composite material for the gate electrode and gate pad with low reflection characteristics, and a metal layer under the data line to absorb external light, thereby reducing bezel area and image quality degradation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If the bezel area is minimized to achieve a larger screen in small portable devices, then the screen area is improved, but external light reflection on the data lines and gate electrodes deteriorates image quality
Solution Approach 1:
The patent applies this principle by introducing a light absorption layer that converts harmful external light reflection into beneficial light absorption. The light absorption layer is specifically positioned below data lines and gate electrodes to absorb external light that would otherwise reflect and degrade image quality, while being transparent to backlight to maintain display performance
Solution Approach 2:
The patent applies this principle by making the light absorption layer selectively transparent - it is transparent to backlight coming from below the display panel but absorbs external light from the front. This local quality differentiation allows the same layer to serve dual functions: maintaining backlight transmission while blocking harmful external light reflection
2Object-affected harmful factors
If a light absorption layer is added below data lines to absorb external light, then image quality is improved by reducing reflection, but device complexity increases
Solution Approach 1:
The light absorption layer serves multiple functions simultaneously: it absorbs external light to prevent reflection, maintains transparency to backlight for display functionality, and can be integrated with existing display structures. This multi-functionality reduces the need for additional separate components, thereby limiting the increase in device complexity
3Object-affected harmful factors
If the gate electrode and gate pad use composite material with low reflection characteristics, then image quality is improved, but manufacturing complexity increases
Solution Approach 1:
The patent applies this principle by using composite materials for gate electrodes and gate pads that combine low reflection characteristics with good electrical conductivity. The composite material structure is designed to reduce external light reflection while maintaining manufacturing feasibility through established deposition and patterning processes
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 effectively minimizes bezel area and prevents image quality deterioration from external light reflection, improving workability and reducing power consumption while enhancing viewing angle characteristics and light transmittance.
Implementation Method 1
a light absorption layer disposed below the data line to absorb light incident from an outside
Data Source
AI summary
A display apparatus can include a display panel including a first substrate and a second substrate, a color filter layer disposed on the first substrate, a plurality of gate lines and a plurality of data lines disposed on the second substrate to define a plurality of subpixels, a thin film transistor disposed in each of the plurality of subpixels on the second substrate, a common electrode and a pixel electrode disposed in each of the plurality of subpixels, and a light absorption layer disposed below each data line to absorb light incident from outside.