Mask Plate Segmentation for LCD Data Signal Disconnection
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Solution Overview
Problem
Conventional liquid crystal display panels with continuous data signal lines can only input one data signal at a time, limiting the image scanning frame rate or requiring a shorter pixel charging time, resulting in lower performance.
Innovation Solution
A mask plate with 2n+1 successively arranged mask patterns, where each pattern includes a light-shielding pattern for data signal lines, and the light-shielding patterns of adjacent patterns are discontinuous, allowing for stitching exposure to create disconnected data signal lines on the array substrate, enabling simultaneous input of different data signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If continuous data signal lines are used in the array substrate, then the liquid crystal display panel can input data signals continuously, but the image scanning frame rate is limited and pixel charging time is shortened
Solution Approach 1:
The patent divides the array substrate into multiple independent scanning regions (first scanning region, second scanning region, third scanning region, fourth scanning region) separated by stitching regions. Each region has its own data signal lines that are disconnected at the stitching regions. This segmentation allows different data signals to be input simultaneously to different regions, thereby doubling the image scanning frame rate while maintaining adequate pixel charging time for each region.
2Adaptability or versatility
If a single mask plate contains the complete array pattern, then the whole array pattern can be formed by a single exposure process, but the data signal lines are continuous and cannot support simultaneous data signal input
Solution Approach 1:
The mask plate is divided into multiple mask patterns (first mask pattern, second mask pattern, third mask pattern, fourth mask pattern) that correspond to different scanning regions. Each mask pattern contains light-shielding patterns that define the data signal lines for specific regions. The light-shielding patterns in adjacent mask patterns are discontinuous at the stitching regions, creating the disconnected data signal lines needed for simultaneous data signal input to different regions.
Solution Approach 2:
The light-shielding patterns in the mask plate are designed with asymmetric discontinuities at the stitching regions. Specifically, the light-shielding patterns of adjacent mask patterns are discontinuous in an asymmetric manner, which creates the intentional disconnections in the data signal lines at the stitching regions while maintaining continuity in other areas. This asymmetric design enables the disconnection of data signal lines to allow simultaneous data signal input.
3Speed
If the pixel charging time is kept constant, then the image scanning frame rate is lower, but if the image scanning frame rate is kept constant, then the pixel charging time is shorter
Solution Approach 1:
By segmenting the array substrate into multiple scanning regions with disconnected data signal lines at stitching regions, the patent enables parallel data signal input to different regions. This segmentation allows the system to achieve higher image scanning frame rates (doubling the frame rate) while each region maintains sufficient pixel charging time, as each region can be charged independently without waiting for other regions.
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
This approach doubles the image scanning frame rate or pixel charging time, achieving ultra-high resolution in liquid crystal display panels by allowing simultaneous input of data signals to different display regions.
Implementation Method 1
each mask pattern includes a light-shielding pattern corresponding to a portion of a data signal line on the array substrate
Data Source
AI summary
Embodiments of the invention provide a mask plate, a method for fabricating an array substrate using the mask plate, and an array substrate. The mask plate is used for fabricating the array substrate by a stitching exposure. The mask plate comprises 2n+1 mask patterns successively arranged and parallel to each other, where n is any natural number, each mask pattern includes a light-shielding pattern corresponding to a portion of a data signal line on the array substrate. The light-shielding patterns of two adjacent mask patterns are discontinuous, and the portions on both sides of the light-shielding pattern of the mask pattern located in the middle of the mask plate are asymmetric.