Display Panel Sub-Pixel Layout for Light Leakage Reduction
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Solution Overview
Problem
Curved surface display panels face issues with light leakage and color mixing due to differences in bending curvature between the color film substrate and the array substrate, which are mitigated by widening the black matrix, but this decreases the aperture ratio.
Innovation Solution
The display panel design includes a substrate with sub-pixels arranged in a matrix, where adjacent rows form pixel units with shared scanning lines and data lines, and the sub-pixels have overlapping switch transistors and data lines to reduce the black matrix width, ensuring efficient charging and minimizing light leakage while maintaining a high aperture ratio.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the black matrix is widened to avoid light leakage, then light leakage and color mixing are reduced, but the aperture ratio of the display panel decreases
Solution Approach 1:
The patent merges the functions of multiple scanning lines by electrically connecting them together. Specifically, multiple scanning lines that would normally be separate are connected in parallel, allowing them to function as a single scanning unit. This reduces the number of independent scanning lines needed, thereby reducing the total width of black matrix required to separate them, while still maintaining proper scanning functionality across all sub-pixels.
Solution Approach 2:
The patent makes scanning lines serve multiple functions by having them electrically connected to serve multiple rows of sub-pixels simultaneously. A single scanning line (or group of connected scanning lines) can address multiple rows of sub-pixels, reducing the overall number of scanning lines required and the black matrix width needed to separate them.
2Device complexity
If multiple scanning lines are electrically connected, then the number of scanning lines is reduced and black matrix width is reduced, but the charging efficiency must be maintained
Solution Approach 1:
The patent segments the display panel into multiple pixel unit groups, where each group contains multiple pixel units. By electrically connecting scanning lines within each group and using independent driving circuits for each group, the system maintains high charging efficiency through parallel operation of multiple groups while reducing the total number of scanning lines needed across the entire panel.
Solution Approach 2:
The patent introduces a new organizational dimension by grouping pixel units into pixel unit groups and connecting scanning lines within each group. This dimensional reorganization allows multiple scanning lines to be electrically connected without compromising charging efficiency, as different groups can be driven simultaneously through independent driving circuits.
Data Source
AI summary
Provided are a display panel and a display device. Along a column direction of the matrix, adjacent N rows of sub-pixels form a pixel unit group, N scanning lines of a same pixel unit group are electrically connected, and sub-pixels of the same pixel unit group are electrically connected to different data lines; a length of a first edge of the sub-pixel along the column direction of the matrix is smaller than a length of a second edge along a row direction; along the column direction of the matrix, adjacent N sub-pixels form a pixel unit; among N switch transistors of a same pixel unit, orthographic projections of at least two switch transistors on a preset plane at least partially overlap; among N data lines of the same pixel unit, an orthographic projection of at least one data line overlaps an orthographic projection of at least one pixel electrode.