Display Device Seal Part Outside Recess for Gap Stability
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Solution Overview
Problem
Conventional display devices with spacers in the display area suffer from reduced luminous efficiency due to the presence of spacers, which affect the stability of the gap between substrates, impacting picture quality.
Innovation Solution
A display device configuration featuring a first substrate with light-emitting units, a second substrate facing the first substrate, and a seal part that bonds them, with recesses formed outside the light-emitting unit area on at least one substrate, allowing the seal part to be formed outside the recesses to maintain a uniform gap without spacers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If spacers are disposed in the display area to make the gap constant, then the gap stability is improved, but the luminous efficiency is reduced
Solution Approach 1:
The invention extracts the spacers from the display area and relocates them to the peripheral area. This is achieved by forming a recess in the substrate at the peripheral area, into which the seal part protrudes, allowing spacers to be positioned outside the light-emitting units while still maintaining gap stability in the display area.
Solution Approach 2:
The invention changes the spatial dimension by moving the spacers from the two-dimensional display plane to the peripheral region in a different spatial location. The recess structure allows spacers to be positioned in a peripheral dimension rather than occupying the central display area, thus separating the gap-stabilizing function from the light-emitting area.
2Manufacturing precision
If spacers are disposed in the display area to make the gap constant, then the gap uniformity is improved, but the picture quality is degraded
Solution Approach 1:
The spacers are extracted from the display area and repositioned in the peripheral area using the recess structure. This extraction eliminates the harmful effect of spacers on picture quality while preserving their beneficial effect on gap uniformity, as they continue to maintain the cell gap distance from the peripheral position.
3Strength
If spacers are disposed in the display area to maintain gap stability, then the structural support is improved, but the light emission efficiency is reduced
Solution Approach 1:
The spacers are taken out from the display area and repositioned in the peripheral area through the recess structure. This maintains the structural support function for gap stability while eliminating the energy loss caused by spacer interference with light emission from the light-emitting units.
Data Source
AI summary
A display device of the present disclosure includes a first substrate on which light-emitting units are formed, a second substrate disposed to face the first substrate, and a seal part which bonds the first substrate and the second substrate. In addition, at least one of the first substrate and the second substrate includes a recess formed at a portion outside an area of the light-emitting units, and the seal part is formed outside the recess. Further, an electronic apparatus of the present disclosure has the display device having the aforementioned configuration.