Display Panel Shared Discharge Layout for Wider Viewing Angles
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Solution Overview
Problem
The existing data line sharing (DLS) architecture in display devices results in poor viewing angles, leading to a suboptimal display effect.
Innovation Solution
A display panel structure is implemented with sub-pixels arranged in an array, where data lines and gate lines are connected to sub-pixels with specific polarities, and shared discharge bars with varying voltages are used to discharge sub-areas, allowing for alternating current power supply to improve viewing angles while reducing the number of data lines and IC chips.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a data line sharing (DLS) architecture is used to reduce the number of data lines and IC chips, then cost is reduced, but viewing angles deteriorate
Solution Approach 1:
The pixel structure is divided into a main area and a sub-area, with the sub-area positioned at corners or edges. This segmentation allows different regions to have different voltage control mechanisms, enabling improved viewing angles in specific critical areas while maintaining the overall DLS architecture for cost reduction.
Solution Approach 2:
The patent applies different voltage control strategies to different regions: the sub-area (at corners/edges) receives discharge control through shared discharge bars to improve viewing angles, while the main area maintains standard DLS operation for cost efficiency. This local differentiation resolves the contradiction between cost reduction and viewing angle improvement.
2Adaptability or versatility
If alternating current power is supplied to shared discharge bars to reduce voltage ratio and improve viewing angles, then viewing angles are improved, but device complexity increases
Solution Approach 1:
The shared discharge bars serve multiple functions: they discharge the sub-area to improve viewing angles, and they are controlled through alternating current power supply to dynamically adjust voltage ratios. This multi-functionality achieves viewing angle improvement without requiring separate dedicated structures, thereby limiting the increase in device complexity.
Solution Approach 2:
Alternating current power is supplied to the shared discharge bars, creating periodic voltage changes that dynamically control the voltage ratio between sub-area and main area. This periodic action enables adaptive viewing angle improvement while using a relatively simple AC power supply mechanism rather than complex continuous control systems.
Data Source
AI summary
A display panel and a display device are provided in embodiments of the present application, the display panel includes: a plurality of sub-pixels, each of the sub-pixels includes a main area and a sub-area; a plurality of data lines connected to sub-pixels with a same polarity in adjacent pixel groups; a plurality of gate lines, each of which is connected to a part of sub-pixels in adjacent rows of sub-pixels; and a plurality of shared discharge bars, at least one shared discharge bar is disposed in the pixel group, and the shared discharge bars are connected to the sub-areas of the sub-pixels. Viewing angles of the display device can be improved.