Bent Display Panel Demux Wiring Layout for Data Mapping Accuracy
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Solution Overview
Problem
Display quality is compromised due to data line coupling and data mapping errors in conventional display apparatuses, particularly in structures with demux circuits and border reduction designs, leading to reduced image quality and increased dead space.
Innovation Solution
A display apparatus with a wire mixing structure that includes a demux circuit and a data driver with first and second wiring mixing structures, which alternately demuxes output amplifiers to reduce coupling and data mapping errors, while maintaining the integrated circuit and active area of the display panel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a demux circuit is used to divide R-G-B-G data into R-B data and G-G data, then data transmission efficiency is improved, but display quality deteriorates due to coupling between data lines
Solution Approach 1:
The data transmission path is segmented into multiple groups (first group for R-B data, second group for G-G data, third group for border reduction data). By dividing the data lines into separate groups with different wiring structures, the patent reduces coupling between different data types while maintaining efficient demux operation. Each group has its own optimized wiring path, preventing interference between R-B and G-G data lines.
2Area of stationary object
If border reduction structure is implemented to reduce dead space, then area utilization is improved, but display quality deteriorates due to coupling between horizontal lines and data lines
Solution Approach 1:
The patent applies different wiring structures to different spatial regions: the first wiring mixing structure is used for data lines in the first group (R-B data), while the second wiring mixing structure is used for data lines in the second and third groups (G-G data and border reduction data). This localized differentiation allows border reduction functionality to be implemented without introducing coupling interference in critical display regions.
3Area of stationary object
If demux circuit is disposed adjacent to integrated circuit to reduce dead space, then area utilization is improved, but display quality deteriorates due to increased number of floating wires
Solution Approach 1:
The patent introduces a temporal dimension to the wiring structure by implementing different wiring mixing structures for different time periods (first time period for R-B data with first wiring mixing structure, second time period for G-G data with second wiring mixing structure). This time-based differentiation allows the demux circuit to be positioned adjacent to the integrated circuit without creating persistent coupling issues, as the wiring configuration changes dynamically with the data type being transmitted.
4Device complexity
If conventional data driver output is connected directly to data line, then device complexity is reduced, but data mapping errors occur due to position shift of demux circuit
Solution Approach 1:
The patent implements preliminary action by pre-configuring different wiring mixing structures before data transmission begins. The first wiring mixing structure is prepared for R-B data transmission, and the second wiring mixing structure is prepared for G-G data transmission. This advance preparation ensures that when data is transmitted, the correct wiring configuration is already in place, preventing position shift errors without requiring complex real-time switching mechanisms.
Data Source
AI summary
A display apparatus is disclosed that includes a data driver, a demux circuit, a first wiring mixing structure, a second wiring mixing structure, a display panel and a bending area. The data driver includes first to fourth output amplifiers. The demux circuit is configured to branch the first to fourth output amplifiers to first to eighth output lines through demux switching. The first wiring mixing structure is connected to the demux circuit. The second wiring mixing structure is connected to the first wiring mixing structure. The display panel includes data lines connected to the second wiring mixing structure. The bending area is disposed between the display panel and the data driver. The demux circuit is disposed between an integrated circuit area of the data driver and the bending area. The bending area includes a bending line for folding elements toward a rear surface of the display panel. The display panel is disposed on a first side of the bending line and the demux circuit and the integrated circuit area are disposed on a second side of the bending line.