Two-Layer Display Panel Brightness Correction for Pixel Misalignment
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Solution Overview
Problem
In two-layer display panels with a bonding structure, misalignment of upper and lower pixels under certain angles of view leads to ghosting issues, affecting visual experience and increasing defective rates during full bonding.
Innovation Solution
A driving method that divides the first display panel into pixel blocks, acquires the angle between the user's eye and each block, determines misalignment information, corrects initial brightness data based on this information, and outputs the corrected data to improve pixel alignment and reduce ghosting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a two-layer display panel with bonding structure is used, then display area and viewing angle are improved, but pixel misalignment occurs under certain angles of view causing ghosting problems
Solution Approach 1:
The patent divides the display panel into multiple pixel blocks (e.g., 4x4 grid) and processes each block independently. This segmentation allows the system to identify and correct misalignment specific to each pixel block, transforming the global alignment problem into multiple localized correction tasks that can be handled with different brightness adjustment parameters.
Solution Approach 2:
The patent applies different brightness correction parameters to different pixel blocks based on their specific misalignment characteristics. Instead of uniform correction across the entire display panel, each pixel block receives customized brightness adjustment data corresponding to its unique misalignment information, achieving local optimization of alignment appearance.
2Area of stationary object
If full bonding of two display panels is performed, then display area is expanded, but defective rate increases due to alignment difficulties
Solution Approach 1:
The patent performs brightness data correction in advance before the actual display operation. By pre-calculating and applying corrected brightness data based on misalignment information, the system compensates for potential alignment defects before they manifest as visible ghosting, effectively reducing the defective rate without compromising display area expansion.
3Manufacturing precision
If brightness data is corrected for each pixel block, then pixel misalignment is improved, but processing complexity increases
Solution Approach 1:
The patent segments the brightness correction process into independent operations for each pixel block. This allows the system to process misalignment correction in parallel across different blocks, reducing the overall processing time and complexity burden. Each pixel block can be handled with dedicated correction parameters without interfering with other blocks.
Solution Approach 2:
The patent changes the brightness parameters of pixel blocks based on their misalignment information. By adjusting brightness data as a corrective parameter rather than physically repositioning pixels, the system achieves alignment improvement through software-based parameter modification, reducing hardware complexity while maintaining precision.
Data Source
AI summary
Provided are a driving method of a display apparatus, a driving apparatus, an electronic device and a storage medium. The display apparatus includes a first display panel and a second display panel disposed on a light-emitting side of the first display panel, wherein the first display panel is divided into a plurality of pixel blocks; and the driving method includes: acquiring an angle between a user's eye and each pixel block and initial brightness data corresponding to the first display panel; determining misalignment information corresponding to each pixel block according to the angle between the user's eye and each pixel block; correcting the initial brightness data according to the misalignment information corresponding to each pixel block to obtain corrected brightness data; and outputting the corrected brightness data to the first display panel.