Display Panel Pixel Layout to Reduce IC Heat and Line Dimming
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Solution Overview
Problem
Existing organic light-emitting display devices face challenges in securing an aperture ratio due to the need for numerous wires for pixel driving, leading to IC heating and horizontal line dimness issues.
Innovation Solution
A display panel design with specific pixel and sub-pixel arrangements, including non-consecutive color sub-pixels and adjacent data and power lines, allows for high efficiency and luminance while minimizing data line toggling and IC heat generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If data voltages of two colors are supplied to one data line using time-division method, then the number of data lines is reduced, but IC heat generation increases and line dimming occurs
Solution Approach 1:
The patent segments the data lines into multiple separate lines, with each data line dedicated to supplying data voltages for a specific color (e.g., first data line for first color, second data line for second color). This segmentation eliminates the need for time-division multiplexing, thereby reducing IC heat generation caused by frequent voltage toggling while maintaining a manageable number of data lines through optimized routing and sharing strategies.
2Device complexity
If data voltages of two colors are supplied to one data line using time-division method, then the number of data lines is reduced, but horizontal line dimming occurs on the screen
Solution Approach 1:
The patent segments the data lines into multiple separate lines, with each data line dedicated to supplying data voltages for a specific color (e.g., first data line for first color, second data line for second color). This segmentation eliminates the need for time-division multiplexing, thereby reducing IC heat generation caused by frequent voltage toggling while maintaining a manageable number of data lines through optimized routing and sharing strategies.
3Reliability
If numerous wires are used for pixel driving, then pixel driving functionality is ensured, but aperture ratio decreases
Solution Approach 1:
The patent merges the functionality of multiple data lines by implementing a sharing mechanism where data lines are reused across different pixel rows or columns through time-space multiplexing. This allows the display device to maintain comprehensive pixel driving functionality while reducing the total number of physical data lines, thereby increasing the aperture ratio as the wire density decreases.
Solution Approach 2:
The patent introduces a temporal dimension to the data line architecture by implementing time-division multiplexing, where a single data line serves multiple pixel rows sequentially over time. This dimensional transformation allows the system to achieve comprehensive pixel coverage without proportionally increasing the spatial density of wires, thus preserving aperture ratio while ensuring complete pixel driving functionality.
Data Source
AI summary
A display panel may include a plurality of sub-pixels arranged in pixel lines and pixel columns. The pixel lines may extend along a first direction. The pixel columns may extend along a second direction orthogonal to the first direction. Each pixel may include first, second, third and fourth sub-pixels adjacent to each other and configured to emit light having different colors. Each sub-pixel may include a pixel circuit and an emission region connected to the pixel circuit. When viewed in the second direction, the pixel circuit of each sub-pixel of a pixel column is disposed below the corresponding emission region, and the pixel circuit of each sub-pixel of an adjacent pixel column is disposed above the corresponding emission region. A display device including a display panel is also disclosed.