Pixel Lighting Area Layout for Display Color Balance
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Solution Overview
Problem
Display devices face challenges in achieving optimal display quality due to variations in lighting areas of different pixel units, leading to inconsistent color representation.
Innovation Solution
The display device incorporates a substrate with a matrix that separates pixel units, each with specific lighting areas and color filters, where the ratio of lighting areas between pixel units is adjusted to enhance display quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the lighting areas of different pixel units are made equal, then the manufacturing process is simplified, but the color representation becomes inconsistent
Solution Approach 1:
The patent applies local quality by making the first pixel unit (red light emitting element) have a larger lighting area than the second pixel unit (blue light emitting element). This non-uniform local adjustment compensates for the different luminous efficiencies of red and blue LEDs, achieving consistent color representation across different pixel types while maintaining overall device simplicity
Solution Approach 2:
The patent changes the physical parameter of lighting area for different pixel units. Specifically, the first pixel unit has a lighting area that is 1.0 to 1.5 times larger than the second pixel unit. This parameter adjustment balances the color output by compensating for the inherently lower luminous efficiency of red light emitting elements compared to blue ones
2Manufacturing precision
If the lighting area of red pixel units is increased, then color balance is improved, but the device complexity increases
Solution Approach 1:
The patent implements local quality by selectively enlarging only the first pixel unit's lighting area while keeping the second pixel unit's area smaller. This targeted local modification achieves color balance without requiring complex overall structural changes, maintaining device simplicity while improving color representation
Solution Approach 2:
The patent applies asymmetry by creating intentionally unequal lighting areas between different pixel units. The first pixel unit has a larger area than the second pixel unit, forming an asymmetric configuration that compensates for the different characteristics of red and blue light emitting elements, achieving color balance through deliberate asymmetry rather than uniformity
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 ensures consistent and improved display quality by optimizing the lighting areas and color representation, aligning with color standards like ITU-R BT.2020, enhancing the white point accuracy in the CIE1931 colorimeter system.
Implementation Method 1
a first light emitting element and a first color filter overlapped with the first opening. The second pixel unit configured to emit a blue light includes a second light emitting element
Implementation Method 2
a first color filter overlapped with the first opening. The second pixel unit configured to emit a blue light includes a second light emitting element and a second color filter overlapped with the second opening
Data Source
AI summary
The disclosure provides a display device including a substrate, a matrix disposed on the substrate, a first pixel unit and a second pixel unit. The matrix has a first opening, a second opening and a first portion between the first opening and the second opening. The first pixel unit configured to emit a red light includes a first light emitting element and a first color filter overlapped with the first opening. The second pixel unit configured to emit a blue light includes a second light emitting element and a second color filter overlapped with the second opening. The first color filter has a first peripheral portion overlapped with the first portion, and the first peripheral portion is greater than the first portion in length. A ratio of a lighting area of the first pixel unit to a lighting area of the second pixel unit is ranged from 1.02 to 1.84.