Sub-Frame Light Emission Control for High-Contrast Display Coupling
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Solution Overview
Problem
High contrast coupling occurs in displays due to interference between current signals flowing through channel lines, leading to inconsistent brightness among light emitting elements and degraded picture quality.
Innovation Solution
A light emission control method that divides light emitting elements into display sets and controls them using a driver circuit to generate sub-frames with specific display orders and set arrangements, ensuring one-to-one corresponding relationships between sub-frames and display time intervals to reduce brightness differences.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If current signals are used to drive light emitting elements through channel lines, then the display can be controlled to show image frames, but interference between current signals causes high contrast coupling and brightness inconsistency
Solution Approach 1:
The patent divides the display time period into multiple sub-frames, where each sub-frame contains partial gray values of light emitting elements. By segmenting the display process into temporal portions, the patent reduces the impact of current signal interference on any single light emitting element, thereby alleviating high contrast coupling while maintaining display control capability.
2Adaptability or versatility
If light emitting elements are driven with current signals, then the display can render image content, but brightness differences occur among elements connected to the same channel line
Solution Approach 1:
The patent dynamically adjusts the display timing by assigning different sub-frames to different display time intervals. Light emitting elements are displayed in a dynamic sequence rather than simultaneously, allowing the system to adapt the display timing to reduce brightness differences caused by current signal interference while maintaining full image display capability.
Data Source
AI summary
A light emission control method includes: (A) generating M sub-frames based on an image frame, where, with respect to each of multiple light emitting elements, a sum of partial gray values of the light emitting element that are respectively contained in N ones of the sub-frames is equal to a frame gray value of the light emitting element that is contained in the image frame, and 0<N≤M; (B) obtaining a display set arrangement that indicates which one(s) of the light emitting elements is/are included in each of multiple display sets; (C) obtaining a display order of the sub-frames in M display time intervals, where the display order indicates, with respect to each display set, a one-to-one corresponding relationship between the sub-frames and the display time intervals; and (D) in each display time interval, controlling each display set to display one of the sub-frames that corresponds to the display time interval.