Display Panel Optical Pattern Layout for Color Purity and Light Efficiency
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Solution Overview
Problem
Existing display technologies face challenges in achieving improved light efficiency and image quality, particularly in managing light control patterns and color filters to enhance color purity and viewing angle.
Innovation Solution
A display panel design incorporating optical patterns and color filters with integrated scattering particles and a refractive layer, along with partition walls and division patterns, to optimize light conversion and emission efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If light control patterns are used to improve color purity and viewing angle, then display quality is improved, but light efficiency deteriorates due to light loss in the patterns
Solution Approach 1:
A light reflective layer is introduced as an intermediary component between the light control patterns and the backlight unit. This reflective layer captures light that would otherwise be lost in the light control patterns and redirects it back through the display panel, thereby improving light efficiency without compromising the color purity and viewing angle benefits of the light control patterns
Solution Approach 2:
The light that is lost or absorbed by the light control patterns is converted into a beneficial resource by the light reflective layer, which reflects this light back into the display panel. This transforms the harmful light loss into a beneficial recycling mechanism that improves overall light efficiency
2Adaptability or versatility
If scattering particles are added to optical patterns to improve viewing angle, then viewing angle is improved, but manufacturing complexity increases
Solution Approach 1:
Scattering particles are integrated directly into the light control patterns during the same manufacturing process, combining multiple functions (light control and viewing angle enhancement) into a single integrated structure. This reduces manufacturing complexity compared to adding separate scattering layers
3Loss of energy
If multiple layers including refractive index layers are added to improve light efficiency, then light efficiency is improved, but device complexity increases
Solution Approach 1:
The light reflective layer serves multiple functions simultaneously: it reflects lost light back into the panel to improve efficiency, acts as a structural element of the display stack, and can be integrated with other functional layers. This multi-functionality justifies the added complexity by delivering significant light efficiency improvements
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 enhances light emission efficiency and improves color purity and viewing angle, resulting in improved display quality.
Implementation Method 1
a third optical pattern in a third pixel area, overlapping the peripheral area and the third light emitting element, and comprising a third color filter and a scattering pattern
Implementation Method 2
a refractive index layer disposed on the peripheral area and having a refractive index different from a refractive index of the partition wall
Implementation Method 3
a first wavelength conversion pattern disposed on the first pixel area and comprising a first color filter and a first wavelength conversion pattern, and a second wavelength conversion pattern disposed on the second pixel area and comprising a second color filter and a second wavelength conversion pattern
Data Source
Figure 1A~1B
Figure 2
Figure 3A
AI summary
A display panel may include first to third light emitting elements providing source light, first to third color filters, a first optical pattern between a first color filter and the first light emitting element, a second optical pattern between the second color filter and the second light emitting element, a third optical pattern between the third color filter and the third light emitting element, and a refractive layer between the first color filter and the first optical pattern, between the second color filter and the second optical pattern, and between the third optical pattern and the third light emitting element.