Display Device Routing Line Arrangement for Area Expansion
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Solution Overview
Problem
Existing display devices face limitations in expanding the display area due to the narrow arrangement area for routing lines, which restricts the additional placement of light emitting elements.
Innovation Solution
The display device incorporates a unique arrangement of light emitting and driving reference units, with different arrangement orders and overlapping configurations, and uses shorter routing lines to connect them, allowing for a more efficient use of space and expansion of the display area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the display area is expanded by adding more light emitting elements, then the display area increases, but the arrangement area for routing lines becomes insufficient
Solution Approach 1:
The patent transitions from a planar arrangement to a three-dimensional stacked arrangement by placing driving reference units beneath the pixel electrodes in the second sub-area. This vertical dimensionality change allows routing lines to connect light emitting reference units to driving reference units through the thickness of the display panel, effectively utilizing the Z-axis space to resolve the routing line arrangement problem while expanding the display area.
Solution Approach 2:
The patent implements a nested structure where driving reference units are positioned within the space occupied by the second sub-area of the display panel, and routing lines are routed through intermediate connection structures. This nesting approach allows multiple functional units to be compactly arranged in a hierarchical manner, maximizing space utilization and enabling sufficient routing line arrangement area.
2Quantity of substance
If routing lines are made longer to connect distant light emitting elements, then more light emitting elements can be arranged, but the routing line length increases causing signal degradation
Solution Approach 1:
By positioning driving reference units directly beneath corresponding light emitting reference units in the second sub-area and routing lines through the panel thickness, the patent creates short vertical connections that minimize routing line length. This three-dimensional arrangement ensures that even as the number of light emitting elements increases, the routing line length remains controlled and signal degradation is prevented.
3Area of stationary object
If the bezel area is reduced to expand display area, then the display area increases, but the space for accommodating driving circuits and routing lines decreases
Solution Approach 1:
The patent moves driving circuits from the traditional planar bezel area into the vertical space of the second sub-area by placing driving reference units beneath pixel electrodes. This utilizes the Z-axis dimension within the display panel thickness, effectively removing the conflict between bezel width and driving circuit space, and enabling full utilization of the available volume for both display and driving functions.
Solution Approach 2:
The patent merges the functions of display area and driving circuit area by overlaying driving reference units with the second sub-area that contains light emitting reference units. This combining approach allows the same physical space to serve dual purposes, effectively increasing the display area while accommodating driving circuits without requiring additional bezel space.
Data Source
AI summary
A display device includes a display panel including a first display area, and a second display area adjacent to the first display area, and a panel driver overlapping the second display area of the display panel. The display panel further includes light emitting reference units each including light emitting elements and being disposed in the second display area, and driving reference units each including driving circuits and being electrically connected to a corresponding light emitting reference unit among the light emitting reference units. An arrangement order of the light emitting reference units is different from an arrangement order of the driving reference units corresponding to the light emitting reference units.