Display Device Light Shielding Layer Groove Layout
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Solution Overview
Problem
Existing display devices face challenges in suppressing moisture entry and light reflection at the interface between the substrate and color filter, with limited flexibility in the layout of groove portions to optimize these features.
Innovation Solution
A display device design featuring a light emitting element substrate with an organic layer and color filter configuration, including a first color filter for light emission, a non-formation portion outside the filter, and a light shielding layer below it, along with a second color filter and groove portions that divide the organic layer, where the groove portions are filled with a seal material and the light shielding layer is formed below them to reduce moisture and light entry.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a groove portion is provided between the first color filter and the second color filter to suppress moisture entry, then moisture resistance is improved, but the layout flexibility of the groove portion is limited due to light reflection constraints
Solution Approach 1:
A light shielding layer is introduced as an intermediary element between the groove portion and the display area. This layer prevents external light from entering through the groove portion and causing reflection, thereby decoupling the groove portion's position from light reflection constraints. The light shielding layer acts as a mediator that allows the groove portion to be placed in optimal positions for moisture sealing without being restricted by optical performance requirements.
2Illumination intensity
If the groove portion is positioned to prevent light reflection, then optical performance is improved, but the sealing effectiveness against moisture is reduced
Solution Approach 1:
The sealing structure is segmented into multiple functional zones: the groove portion provides the primary sealing barrier, while the light shielding layer provides optical protection. This segmentation allows each element to optimize its specific function - the groove for moisture blocking and the light shielding layer for preventing light reflection - without compromising the other.
Solution Approach 2:
The solution moves from a two-dimensional planar sealing approach to a three-dimensional structure by adding vertical layering. The groove portion creates a physical barrier in the vertical direction, while the light shielding layer addresses optical paths from different angles. This dimensional approach allows simultaneous optimization of both sealing effectiveness and optical performance.
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 suppresses moisture entry and light reflection, enhancing the design flexibility of the groove portions and improving the display device's performance by increasing the contact area for seal materials and reducing light reflection from external sources.
Implementation Method 1
a light shielding layer is at least partially formed immediately below the non-formation portion
Implementation Method 2
it is required to determine a position of the groove portion in consideration of suppressing occurrence of light reflection of external light entering the substrate from the position of the groove portion
Data Source
AI summary
Provided are a display device and an electronic device capable of suppressing entry of moisture from a boundary between a substrate and a color filter and suppressing light reflection of external light, and having an improved degree of freedom in a layout of a groove portion. A display device includes: a light emitting element substrate provided with a light emitting element; and an organic layer provided on the light emitting element substrate and having a color filter, in which there is a display area determined as a region where light generated by the light emitting element is emitted, the color filter includes a first color filter on which light generated by the light emitting element is incident, in a case where an inward-outward direction is determined along a plane direction of the display area, a non-formation portion of the organic layer is present outside the first color filter, and in a case where a direction from the organic layer toward the light emitting element substrate along a thickness direction of the organic layer is defined as a downward direction, a light shielding layer is at least partially formed immediately below the non-formation portion.