Display Panel Pixel Array Data Line Routing
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Solution Overview
Problem
Conventional liquid crystal display panels with a half source driver structure face challenges in reducing the circuit layout area between gate lines, limiting the open ratio and efficiency of the display panel due to the arrangement of data lines and sub-pixels.
Innovation Solution
The proposed solution involves a pixel array structure where data lines have a main, branch, and connecting portion, with the connecting portion penetrating through sub-pixels and electrically connected to both the main and branch portions, allowing for reduced circuit layout area and enhanced open ratio by sharing data lines between sub-pixels and reducing the need for additional circuit layout between gate lines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If data lines are arranged in conventional HSD structure, then the number of source drivers is reduced, but the circuit layout area between gate lines cannot be reduced and open ratio cannot be enhanced
Solution Approach 1:
The data line is segmented into three distinct portions: a first portion extending from the data line electrode to a first position, a second portion extending from the data line electrode to a second position, and a third portion connecting the first and second portions. This segmentation allows each portion to be optimized independently, with the first and second portions routed through different sub-pixels to minimize the circuit layout area between gate lines while maintaining electrical connection.
Solution Approach 2:
The connecting portion of the data line is disposed within and penetrates through the sub-pixel region, nesting the data line connection path within the existing sub-pixel structure. This eliminates the need for separate circuit layout area between gate lines, as the connection is embedded within the sub-pixel boundaries.
2Device complexity
If data lines are arranged in conventional HSD structure, then the number of source drivers is reduced, but the open ratio of the pixel cannot be effectively enhanced
Solution Approach 1:
The connecting portion of the data line is nested within the sub-pixel region, passing through the sub-pixel without requiring additional space outside the sub-pixel boundaries. This allows the active area of the sub-pixel to be maximized while still providing the necessary data line connections, thereby enhancing the open ratio.
Solution Approach 2:
The data line connection is transitioned from a two-dimensional layout between gate lines to a three-dimensional path that penetrates through the sub-pixel structure. By utilizing the vertical dimension and routing the connecting portion through the sub-pixel, the horizontal space requirements are reduced, increasing the open ratio.
Data Source
AI summary
A pixel array includes pixel rows. Each pixel row includes a first gate line, a second gate line, sub-pixels and data lines. Each data line includes a main portion, a branch portion and a connecting portion. The main portions of the data lines are arranged along a second direction in sequence. The branch portions and the main portions of the data lines are arranged alternately along the second direction in sequence, and each sub-pixel is disposed between any two of the adjoining main portion and branch portion. The connecting portion of each of the data lines is disposed between the first gate line and the second gate line, the connecting portion of each data line is electrically connected with the main portion and the branch portion of each data line, and the connecting portion of each data line penetrates through the corresponding sub-pixel along the second direction.