Light-Emitting Substrate Wiring Layout for Uniform Mini LED Output
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Solution Overview
Problem
In display products using mini or micro light-emitting diodes, the removal of diffusion film structures to achieve ultra-thin displays leads to poor light uniformity due to inadequate light dispersion, resulting in optical defects that negatively impact the display effect.
Innovation Solution
A light-emitting substrate with a base substrate featuring a plurality of light-emitting units and first driving signal line groups, where the light-emitting units have sub-units with specific electrode terminals and the signal lines provide signals to these units in a zigzag pattern to enhance light uniformity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If diffusion film structures are removed to achieve ultra-thin displays, then the thickness of the display is reduced, but the light uniformity deteriorates due to inadequate light dispersion
Solution Approach 1:
The patent segments the light-emitting elements into mini or micro LED units arranged in an array, and introduces a grid-like wiring structure with driving signal line groups that are segmented and distributed throughout the substrate. This segmentation allows for localized control and optimization of light emission patterns to improve uniformity without requiring thick diffusion films.
Solution Approach 2:
The patent applies local quality by creating regions with different light emission characteristics through the grid-like wiring structure. The driving signal line groups are strategically positioned to provide localized light shielding and dispersion control, allowing different areas of the display to have optimized light properties for overall uniformity.
2Manufacturing precision
If mini or micro light-emitting diodes are used, then the display resolution and image contrast are improved, but the light dispersion capability deteriorates leading to optical defects
Solution Approach 1:
The patent introduces the grid-like wiring structure and driving signal line groups as intermediary elements between the mini/micro LED sources and the display output. These intermediaries provide light shielding and dispersion control functions that the small LED units alone cannot achieve, mediating between high resolution requirements and light dispersion needs.
Solution Approach 2:
The patent adds a dimensional aspect to light control by introducing the grid-like two-dimensional wiring structure overlay. This additional dimensional layer provides multiple pathways for light management, enabling control over light dispersion in both horizontal and vertical directions to compensate for the limited dispersion capability of mini/micro LEDs.
Data Source
AI summary
A light-emitting substrate is provided. The light-emitting substrate includes a base substrate, light-emitting units, and first driving signal line groups; the light-emitting unit includes light-emitting sub-units; the first driving signal line is configured to be connected to the first electrode terminal of the light-emitting sub-unit; a translation distance in the column direction is provided between a k-th light-emitting unit in the N-th column and a k-th light-emitting unit in the (N+1)-th column, and the translation distance is smaller than a spacing between two adjacent light-emitting units in a same column in the column direction; the first driving signal line group is between the N-th column of light-emitting units and the (N+1)-th column of light-emitting units and alternately passes through light-emitting units in the N-th column and the (N+1)-th column; and each light-emitting unit is passed by two adjacent first driving signal line groups.