Display Device with Overlapping Driver Circuit for Expanded Area
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current display devices face challenges in reducing the size of the peripheral area while maintaining high resolution and driving efficiency, which limits the expansion of the display area, especially with the increasing demand for larger and more efficient screens.
Innovation Solution
The design incorporates a display device with a unique layout featuring a first and second display area, where the second display area is positioned between the first display area and the peripheral area, with a driving circuit overlapping the second light emitting elements, allowing for a reduced peripheral area and an expanded display area with a soft curved edge, optimizing pixel density and luminance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If the peripheral area is reduced to enlarge the display area, then the display area is expanded, but the driver circuit cannot be properly accommodated for high resolution and high-rate driving
Solution Approach 1:
The patent applies dimensionality change by transitioning from a two-dimensional planar layout to a three-dimensional stacked architecture. The driving circuit is positioned in a third dimension (vertical layer) overlapping with the light emitting elements, allowing the display area to expand horizontally while the driver circuit occupies vertical space, thus resolving the conflict between display area expansion and driver circuit accommodation.
Solution Approach 2:
The patent implements nesting by placing the driving circuit within the spatial envelope of the light emitting elements. The driving circuit is embedded in a region that overlaps with the light emitting elements in plan view, creating a nested configuration where the driver circuit is contained within the vertical projection of the display area, maximizing space utilization.
2Measurement precision
If the number of light emitting elements is increased to improve resolution, then the resolution is enhanced, but the peripheral area required increases
Solution Approach 1:
The patent resolves this contradiction by moving the driver circuit to a third dimension, allowing higher resolution with more light emitting elements to be packed into the display area without proportionally increasing the peripheral area. The vertical stacking enables denser integration of driving circuits for high-resolution displays.
Solution Approach 2:
The patent merges the display area and driver circuit area by overlapping their spatial projections. The driving circuit is positioned to overlap with light emitting elements in plan view, combining what were traditionally separate functional areas into a unified spatial configuration, thereby reducing the total device area required for high-resolution displays.
3Shape
If the display area is expanded with rounded edges, then the aesthetic quality is improved, but the pixel density and luminance uniformity become challenging to maintain
Solution Approach 1:
The patent applies local quality by differentiating the configuration of light emitting elements based on their position. Light emitting elements at rounded corners have different numbers of neighbors compared to those at straight edges, and the patent compensates for this by adjusting their electrical connections and driving schemes to achieve uniform luminance and pixel density across the entire display area including rounded regions.
Solution Approach 2:
The patent utilizes parameter changes by adjusting the electrical parameters (such as driving current, voltage, or timing) of light emitting elements at rounded corners versus straight edges. This allows compensation for the geometric differences introduced by rounded corners, maintaining uniform luminance and pixel density despite the non-uniform shape.
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 increases the display area while minimizing the peripheral area, enhancing image display quality and visibility by adjusting luminance and pixel density, thus addressing the limitations of existing technologies.
Implementation Method 1
second light emitting elements electrically connected to the second pixel circuit
Data Source
AI summary
A display device includes a display area including a first display area and a second display area; a first pixel circuit; a first light emitting element; a second pixel circuit; second light emitting elements; and a driving circuit overlapping the second light emitting elements in a plan view, wherein an edge of the display area includes a straight portion and a round portion, the second light emitting elements that are near each other in a first direction and a second direction configure a light emitting element group, and a number of the second light emitting elements configuring the light emitting element group disposed on the round portion is different from a number of the second light emitting elements configuring the light emitting element group disposed on the straight portion.