Gate-in Panel Display Circuit Bezel Width Reduction
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Solution Overview
Problem
Display apparatuses with gate-in panel (GIP) structures face issues such as increased bezel width due to the gate driving circuit, image quality defects from signal line deviations, and reduced transparency, leading to abnormal operations and line-shaped stripes.
Innovation Solution
A display apparatus design with a substrate having a display area where gate driving circuits are distributed horizontally, including dummy lines and carry signal lines with multiple patterns at different layers, and transmissive parts made of transparent conductive materials to minimize signal line deviations and enhance transparency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If gate driving circuit is embedded in non-display area using GIP structure, then circuit configuration is simplified and manufacturing cost is decreased, but bezel width increases
Solution Approach 1:
The gate driving circuit is divided into multiple stage circuit units (first stage, second stage, third stage, fourth stage) that are distributed across different horizontal lines of the display area. This segmentation allows the circuit functionality to be maintained while eliminating the need for a large non-display area, thus reducing bezel width.
Solution Approach 2:
The gate driving circuit units are arranged in a two-dimensional distributed pattern across multiple horizontal lines rather than being concentrated in a single non-display region. This dimensional redistribution optimizes space utilization and reduces the bezel width requirement.
2Ease of manufacture
If gate driving circuit is embedded in non-display area, then manufacturing cost is decreased, but transparency is reduced
Solution Approach 1:
Different regions of the display apparatus are assigned different functions: the display area contains transparent transmissive parts with embedded circuit units, while the non-display area is minimized. The circuit units themselves have localized transparency characteristics that allow light transmission while maintaining electrical functionality.
Solution Approach 2:
The transmissive parts are constructed using transparent conductive materials that combine the properties of electrical conductivity and optical transparency. This composite material approach enables the circuit elements to maintain both their electrical function and transparency, resolving the contradiction between manufacturing simplicity and optical performance.
3Ease of operation
If multiple signal lines are used to connect pixels to branch circuits, then gate driving functionality is achieved, but resistance deviation occurs causing abnormal operations
Solution Approach 1:
The patent introduces dummy lines with the same structure and material properties as the carry signal lines. These dummy lines are positioned adjacent to the functional signal lines, ensuring that both types of lines experience identical electrical characteristics and environmental conditions. This homogenization eliminates resistance deviations and ensures stable signal transmission across all horizontal lines.
Solution Approach 2:
By positioning dummy lines adjacent to carry signal lines and ensuring they have identical structural properties, the patent creates equipotential conditions for signal transmission. This arrangement ensures that voltage drops and resistance variations are consistent across all signal paths, preventing abnormal operations.
4Illumination intensity
If transmissive parts are used to enable viewing of rear surface, then transparency is enhanced, but size deviation between transmissive parts occurs causing line-shaped stripes
Solution Approach 1:
The patent ensures that all transmissive parts, including those in the display area and dummy lines, are constructed with identical dimensions, materials, and structural properties. This uniformity guarantees consistent light transmission characteristics across the entire display, preventing size deviations that would cause line-shaped stripes.
Solution Approach 2:
The patent carefully controls and standardizes the physical parameters (width, length, material composition) of all transmissive parts to ensure they fall within specified tolerances. By maintaining consistent parameters across all transmissive elements, the patent eliminates variations that would manifest as visual defects.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution reduces bezel width, minimizes image quality defects, and enhances transparency by ensuring consistent light transmission across the display area, preventing line-shaped stripes and abnormal operations.
Implementation Method 1
transmissive parts made of transparent conductive materials to minimize signal line deviations and enhance transparency
Data Source
AI summary
A display apparatus includes a substrate including a display area including a plurality of pixels disposed along a first direction and a second direction intersecting with the first direction, a gate driving circuit disposed at each of a plurality of horizontal lines of the display area, the gate driving circuit including a plurality of stage circuit units for supplying a scan signal to the plurality of pixels, a plurality of gate control lines connected to the plurality of stage circuit units disposed at the display area, a plurality of dummy lines disposed respectively adjacent to the plurality of gate control lines, and a plurality of carry signal lines connected between the plurality of stage circuit units disposed at the display area, each of the plurality of carry signal lines may comprise a plurality of line patterns disposed at different layers.