Pixel Electrode Overlap Layout for Color-Uniform Display Panels
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Solution Overview
Problem
Full-screen display devices face issues with poor light acquisition due to excessive screen display regions, leading to color cast and dispersion, which affect the display effect.
Innovation Solution
The display panel design adjusts the positions of power and data signal lines, ensuring the pixel electrode overlaps specific boundaries of these lines, increasing the overlapping area with metal wiring to maintain uniform coverage and avoid color cast or dispersion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the screen display region is increased to achieve full-screen display, then the display area is improved, but the light acquisition effect deteriorates
Solution Approach 1:
The patent applies local quality by creating different overlapping relationships between signal lines and pixel electrodes in different regions. Specifically, first data wiring sections overlap pixel electrodes while second data wiring sections and power wiring sections do not overlap pixel electrodes, creating localized variations in metal coverage that optimize both display uniformity and light transmission in the full-screen display region.
2Manufacturing precision
If the overlapping area between pixel electrode and metal wiring is increased to avoid color cast, then the display uniformity is improved, but the light-transmitting area deteriorates
Solution Approach 1:
The patent implements local quality by strategically creating overlapping areas between pixel electrodes and metal wiring only where needed. First data wiring sections overlap pixel electrodes to provide sufficient metal coverage for color uniformity, while second data wiring sections and power wiring sections are positioned to avoid overlapping pixel electrodes, thereby preserving light transmission areas and avoiding color cast.
Solution Approach 2:
The patent segments the data signal lines into first data wiring sections and second data wiring sections with different functions. The first data wiring sections are positioned to overlap pixel electrodes for color uniformity, while the second data wiring sections are positioned to avoid overlapping pixel electrodes to maintain light transmission, thus segmenting the data signal transmission path to resolve the contradiction.
3Manufacturing precision
If the metal wiring coverage is made uniform across pixel electrodes to avoid color cast, then the color uniformity is improved, but the device complexity increases
Solution Approach 1:
The patent applies local quality by creating specific overlapping relationships between signal lines and pixel electrodes only in regions where color uniformity is needed. First data wiring sections overlap pixel electrodes to provide uniform metal coverage, while other wiring sections avoid overlapping to maintain simplicity in those regions, thus achieving color uniformity without excessive complexity.
Solution Approach 2:
Instead of making all signal lines overlap all pixel electrodes uniformly (which would be overly complex), the patent inverts the approach by making only specific signal lines (first data wiring sections) overlap specific targets (pixel electrodes) while other signal lines (second data wiring sections, power wiring sections) deliberately avoid overlapping. This selective, non-uniform approach achieves the desired color uniformity with reduced complexity.
Data Source
AI summary
A display panel and a display device are provided in the disclosure. A display region of the display panel includes light-emitting elements and pixel circuits. Power signal lines are data signal lines in the display region are electrically connected to the pixel circuits. Part of power signal lines include a first power wiring section including a first power boundary. Part of the data signal lines include a first data wiring section including a first data boundary and a second data wiring section including a second data boundary. In a thickness direction, a pixel electrode overlaps the first power boundary, overlaps the first data boundary, and does not overlap the second data boundary. The minimum distance between the first power boundary and the first data boundary overlapping the same pixel electrode is smaller than the minimum distance between a first virtual boundary and the first power boundary.