Display Device Bridge Pattern Length Optimization
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Solution Overview
Problem
Conventional display devices have non-display regions where drivers are located, limiting the area available for image display, and there is a need to minimize these non-display regions to increase the display area.
Innovation Solution
The display device incorporates a circuit part with distinct regions, including driving units and pixel circuits, and a display element part with bridge patterns that connect the pixel circuits to the display elements, where the length of bridge patterns varies to optimize the arrangement and reduce non-display regions, allowing display elements to extend onto the circuit part, thereby increasing the display area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If drivers are arranged in a separate non-display region, then the driving function is ensured, but the display area is reduced
Solution Approach 1:
The patent merges the driver region with the display region by allowing display elements to be arranged in the first region where drivers are located. The bridge patterns electrically connect pixel circuits in the second region to display elements in both the second region and the first region, effectively combining the previously separate driver area into a functional display area.
Solution Approach 2:
The patent utilizes the vertical dimension by stacking multiple layers including interlayer insulating layers, bridge patterns, and display elements. This multi-layer structure allows display elements to extend into the first region without interfering with the planar arrangement of pixel circuits, effectively using three-dimensional space to resolve the area conflict.
2Area of stationary object
If display elements are extended into the circuit part region, then the display area is increased, but the electrical connection complexity increases
Solution Approach 1:
The patent segments the connection structure into distinct components: pixel circuits in the second region, display elements in both regions, bridge patterns for electrical connection, and interlayer insulating layers for isolation. This segmentation allows each component to be optimized independently while maintaining overall system functionality.
Solution Approach 2:
The bridge patterns serve as intermediary elements that electrically connect pixel circuits to display elements across different regions. The interlayer insulating layers act as mediators that provide electrical isolation while allowing the bridge patterns to pass through, enabling complex connections without direct interference between components.
3Ease of manufacture
If bridge patterns of uniform length are used, then the manufacturing process is simplified, but the display element arrangement flexibility is reduced
Solution Approach 1:
The patent applies different bridge pattern lengths in different locations based on the specific arrangement requirements. Bridge patterns connecting to display elements in the first region may have different lengths than those connecting to display elements in the second region, allowing optimization for local connection needs while maintaining overall manufacturing feasibility.
Data Source
AI summary
A display device includes: a circuit part including at least one first region and at least one second region disposed adjacent to the first region, wherein the second region includes first pixel circuits arranged adjacent to the first region and second pixel circuits spaced apart from the first region; a display element part disposed on the circuit part, wherein a first display elements are connected to the first pixel circuits and overlap with the first region, and a second display elements are connected to the second pixel circuits; and bridge patterns electrically connecting the first and second pixel circuits and the first and second display elements, wherein the length of bridge patterns connecting the first pixel circuits and the first display elements is different from that of bridge patterns connecting the second pixel circuits and the second display elements.