Display Circuit Layout for Higher Pixel Density with Fewer Protrusions
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The presence of data supply lines in the non-display area of display devices limits the implementation of high resolution due to the need for larger protrusions, which obstruct the placement of light emitting pixel drivers and increase visibility, making it difficult to achieve high pixel density.
Innovation Solution
The display device incorporates transmission bypass lines in the display area to connect data supply lines, with dummy lines extending parallel to data lines and including protrusions that are symmetrically arranged to minimize visibility while reducing the total number of protrusions, allowing for higher pixel density.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Difficulty of detecting and measuring
If protrusions are arranged symmetrically to minimize visibility, then the visual recognition of protrusions is reduced, but the number of protrusions increases, limiting the number of light emitting pixel drivers that can be disposed on the substrate
Solution Approach 1:
The patent applies asymmetry by arranging protrusions asymmetrically rather than symmetrically. Specifically, protrusions are disposed only on alternating data lines (e.g., every other data line) rather than on all data lines, which reduces the total number of protrusions while maintaining visual uniformity. This asymmetric arrangement allows more light emitting pixel drivers to be disposed on the substrate, enabling higher resolution displays.
2Difficulty of detecting and measuring
If the number of protrusions is increased to maintain symmetry, then visibility is reduced, but the pixel density cannot be increased due to space constraints
Solution Approach 1:
The patent extracts or removes protrusions from certain data lines to reduce their total number. By disposing protrusions only on alternating data lines rather than all data lines, the patent reduces the number of protrusions that occupy space, thereby freeing up area for more light emitting pixel drivers and enabling higher pixel density while maintaining acceptable visual uniformity.
3Difficulty of detecting and measuring
If protrusions are made larger to ensure visibility, then the placement of light emitting pixel drivers is obstructed, but making them smaller increases visibility
Solution Approach 1:
The patent uses a periodic copying pattern where protrusions are disposed on alternating data lines rather than all data lines. This creates a regular, repeating pattern that provides visual uniformity across the display while reducing the total number of protrusions by approximately half, thereby freeing up space for additional light emitting pixel drivers without requiring each individual protrusion to be made larger or smaller.
Data Source
AI summary
A display device includes: a substrate including a display area including emission areas, and a non-display area; a circuit layer on the substrate; and an element layer on the circuit layer, and including light emitting elements corresponding to the emission areas. The circuit layer includes: light emitting pixel drivers electrically connected to the light emitting elements; data lines to transmit data signals; first dummy lines extending in a first direction crossing the data lines; and second dummy lines extending parallel to the data lines, and paired with the data lines, respectively. Each of the data lines and the second dummy lines include an extension portion extending in a second direction crossing the first direction, one data line further includes first protrusions crossing some of the first dummy lines, and one second dummy line paired with the one data line further includes second protrusions crossing others of the first dummy lines.