Pixel Electrode Opening Size Variation for Expanded Display Area
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Solution Overview
Problem
Existing display devices are limited by the need for a dummy region around the display area, which restricts the overall size of the displayable region.
Innovation Solution
A display device configuration that includes a first display region and a peripheral display region, where the first pixel electrode in the first display region has a larger opening than the second pixel electrode in the peripheral display region, and both regions have light-emitting layers of equal shape and size, allowing the peripheral area to be used for display purposes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a dummy region is provided in the periphery of the display region, then the display device structure is stabilized and manufacturing is facilitated, but the overall displayable region size is limited
Solution Approach 1:
The patent applies local quality by differentiating the opening sizes of pixel electrodes based on their location. Pixel electrodes in the display region have larger openings optimized for display performance, while pixel electrodes in the peripheral region have smaller openings. This localized differentiation allows the peripheral region to function as a display area without requiring a separate dummy region, thereby expanding the overall displayable area while maintaining manufacturing feasibility.
2Adaptability or versatility
If the opening size of pixel electrodes in the peripheral region is made equal to that in the display region, then display performance is uniform, but the peripheral region cannot be effectively used for display due to manufacturing constraints
Solution Approach 1:
The patent implements local quality by specifying that pixel electrodes in the display region have larger openings while pixel electrodes in the peripheral region have smaller openings. This localized variation in opening size allows the peripheral region to be effectively used for display purposes without compromising manufacturing precision, as each region's opening size is optimized for its specific function and position within the overall device structure.
Data Source
AI summary
Openings, which are provided on the inner sides of anode electrodes formed in a display region, are larger than openings, which are provided on the inner sides of anode electrodes formed in a peripheral display region. A light-emitting layer formed in the display region has equal shape and equal size to a light-emitting layer formed in the peripheral display region.