Display Pixel Layout for Uniform Central and Edge Brightness

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Solution Overview

Problem

Existing electronic devices face challenges in achieving high display quality while also reducing manufacturing costs, particularly in ensuring consistent light emission across different regions of the device.

Innovation Solution

The electronic device incorporates a substrate with a circuit layer, light emitting units, a light guiding layer, a light conversion layer, and a color filter layer, where the light emitting units in the central region have smaller areas than those in the peripheral region, and the light conversion units correspond to specific colors, optimizing light output and display quality.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If the light emitting units in the central region have the same area as those in the peripheral region, then the manufacturing process is simpler, but the light emission consistency between central and peripheral regions deteriorates

Engineering Contradiction:
Improvelight emission consistencyVSAvoidstructure complexity
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The patent applies local quality by making the light emitting units in the central region have a first area and those in the peripheral region have a second area, where the first area is smaller than the second area. This local differentiation compensates for the higher light emission intensity in the central region, achieving consistent overall light emission across different regions while maintaining a relatively simple manufacturing process.

Inventive Principle:
Principle #3Local quality

2Illumination intensity

If the light emitting units are made larger to increase light output, then the brightness improves, but the manufacturing cost and device complexity increase

Engineering Contradiction:
Improvelight outputVSAvoidstructure complexity
Core Design Contradiction:
Illumination intensityVSDevice complexity

Solution Approach 1:

The patent differentiates the area of light emitting units based on their position: central region units have a smaller first area while peripheral region units have a larger second area. This local quality approach optimizes light output distribution without requiring all units to be uniformly large, thereby improving overall light emission consistency while controlling device complexity and manufacturing costs.

Inventive Principle:
Principle #3Local quality

3Manufacturing precision

If uniform light emitting units are used across all regions, then the device complexity is reduced, but the display quality and light emission consistency deteriorate

Engineering Contradiction:
Improvedisplay qualityVSAvoidmanufacturing complexity
Core Design Contradiction:
Manufacturing precisionVSEase of manufacture

Solution Approach 1:

The patent implements local quality by defining different areas for light emitting units in different regions: the first area for central region units is smaller than the second area for peripheral region units. This localized differentiation improves display quality and light emission consistency without significantly complicating the manufacturing process, as it primarily involves adjusting the pattern design rather than fundamentally changing the manufacturing methodology.

Inventive Principle:
Principle #3Local quality

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 enhances display quality by ensuring consistent light emission between the central and peripheral regions, while also potentially reducing manufacturing costs through optimized light emitting unit design and material utilization.

Implementation Method 1

the light conversion layer includes a first light conversion unit overlapping the first light emitting unit and a second light conversion unit overlapping the second light emitting unit

Methodology Applied
Scientific EffectPhotoluminescence: Photoluminescence

Data Source

PatentUS20250143037A1Electronic device
Publication Date: 2025.05.01 INNOLUX CORP
  • US20250143037A1 patent drawing
  • US20250143037A1 patent drawing
  • US20250143037A1 patent drawing

AI summary

An electronic device includes a substrate, a circuit layer, a first light emitting unit, a second light emitting unit, and a light conversion layer. The circuit layer is disposed on the substrate. The first and second light emitting units are disposed on the circuit layer and are respectively electrically connected to the circuit layer. The light conversion layer is disposed on the first and second light emitting units and includes a first light conversion unit overlapping the first light emitting unit and a second light conversion unit overlapping the second light emitting unit. The first and second light conversion units correspond to a first color. In a top view, an area of the first light emitting unit is smaller than an area of the second light emitting unit, and an area of the first light conversion unit is the same as an area of the second light conversion unit.