Charge Distributor for Display Wiring Defect Compensation
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Solution Overview
Problem
Large screen display devices face significant power consumption issues due to disconnection defects in wiring, as conventional solutions like preliminary wiring and buffers are insufficient in reducing power consumption, especially when dealing with extended routing lengths and increased loads.
Innovation Solution
A display device design that includes a buffer for each wiring group, a preliminary wiring for defect repair, and a charge distributor to redistribute charges between wirings and preliminary wiring, with features like short-circuiting outputs and controlling potential variations to minimize unnecessary power usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If preliminary wiring and preliminary buffer are used to repair disconnection defect, then voltage drop is compensated and display quality is improved, but routing length of preliminary wiring is increased and load is larger
Solution Approach 1:
The display panel wirings are divided into multiple groups, with buffers provided for each group. The charge distributor segments the charge distribution control by group, allowing independent management of charge distribution for each wiring group including repaired ones.
Solution Approach 2:
The invention changes the charge distribution parameters dynamically by detecting disconnection defects and adjusting charge distribution accordingly. The charge distributor modifies charge distribution parameters for wiring groups containing defects while maintaining normal parameters for unaffected groups.
2Reliability
If preliminary buffer is used to repair disconnection defect, then voltage drop is compensated, but power consumption is not sufficiently reduced
Solution Approach 1:
The charge distributor recovers and redistributes charges from wiring groups with disconnection defects to other wiring groups. Instead of allowing charges to be wasted in damaged wiring paths, the system recovers these charges and reallocates them to functional wiring groups, thereby reducing overall power consumption while maintaining voltage compensation.
Solution Approach 2:
The charge distributor implements feedback control by detecting disconnection defects and automatically adjusting charge distribution. The system continuously monitors wiring status and dynamically modifies charge distribution parameters to optimize power consumption while ensuring reliable display operation.
3Area of stationary object
If screen size is increased to achieve large screen display, then display area is improved, but routing length of wirings is extended and power consumption increases
Solution Approach 1:
The display panel is divided into multiple wiring groups with dedicated buffers for each group. This segmentation allows independent charge distribution control for each group, enabling the charge distributor to optimize power consumption locally rather than managing the entire large-screen wiring system as a single unit.
Solution Approach 2:
The charge distribution parameters are dynamically adjusted based on the actual status of each wiring group. For wiring groups containing disconnection defects, the system modifies charge distribution parameters to compensate for voltage drops while reducing overall power consumption through intelligent charge redistribution across the large-screen display.
Data Source
AI summary
A display device according to the present invention comprises a buffer provided in association with each wiring constituting a group of wirings serving as signal lines of a display panel in order to drive the corresponding wiring, a preliminary wiring preliminarily provided for the wiring under a generation of a defect, a preliminary buffer provided in association with the preliminary wiring in order to drive the preliminary wiring, and a charge distributor for performing charge distribution between the wirings and the preliminary wiring.