Exposure System Shielding for Display Panel Uniformity
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Solution Overview
Problem
The existing methods for manufacturing display panels result in uneven light exposure between the leading-edge and trailing-edge regions of the substrate, affecting display quality, and the limited factory space necessitates minimizing the footprint of exposure systems, which can lead to unnecessary exposure and lower quality if the light source module is too close to the substrate carrier.
Innovation Solution
A specially designed exposure system with a light source module and shielding units that move in coordinated directions to ensure equal light exposure across the substrate edges, using shielding units to block excessive light and control the light source's position and duration of exposure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the light source module is moved closer to the substrate carrier to minimize the footprint of the exposure system, then the footprint of the exposure system is reduced, but unnecessary exposure occurs and display quality deteriorates
Solution Approach 1:
A shielding unit is introduced as an intermediary component between the light source module and the substrate carrier. This shielding unit selectively blocks light from reaching certain areas of the substrate, preventing unnecessary exposure while allowing the light source module to be positioned closer to the carrier for a compact footprint. The shielding unit acts as a mediator that controls light distribution without requiring the light source to be far from the substrate.
2Manufacturing precision
If the light source module is positioned far from the substrate carrier to ensure proper exposure, then exposure quality is improved, but the footprint of the exposure system increases
Solution Approach 1:
The shielding unit serves as a mediator that enables the light source module to be positioned closer to the substrate carrier while still maintaining proper exposure quality. By selectively blocking light in certain areas, the shielding unit allows for a more compact arrangement without sacrificing the quality of light exposure on the substrate.
3Productivity
If the light source module moves in the turned-on state to a predetermined position, then exposure can be performed, but the leading-edge and trailing-edge regions of the substrate receive different amounts of light
Solution Approach 1:
The shielding unit is positioned and moved in coordination with the light source module to compensate for the different exposure times of leading-edge and trailing-edge regions. By blocking light in specific areas during the movement process, the shielding unit ensures that all regions of the substrate receive substantially equal amounts of light, maintaining exposure uniformity while preserving exposure efficiency.
Solution Approach 2:
The shielding unit applies local quality control by selectively blocking light in specific areas of the substrate. Different regions of the substrate receive different shielding treatments based on their position, ensuring that the leading-edge and trailing-edge regions, which would otherwise receive different amounts of light, are brought to equal exposure levels.
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 method reduces the difference in light exposure between opposite edge regions of the substrate, enhancing the display quality of the finished panel by minimizing uneven exposure and optimizing the use of the light source module.
Implementation Method 1
a light source module (3) adjacent to the first carrier (2)
Implementation Method 2
a first shielding unit (41) disposed between the first carrier (2) and the light source module (3)
Data Source
AI summary
A method for manufacturing a display panel includes: providing a first substrate and an exposure system, wherein the exposure system includes a light source module and a first shielding unit; disposing the first shielding unit at a position between the first substrate and the light source module in the initial state; moving the first shielding unit along a first direction; moving the light source module to pass through the first shielding unit along a second direction different from the first direction, and exposing the first substrate to the light emitted by the light source module; moving the light source module along the opposite direction of the second direction; and moving the first shielding unit back to the position between the first substrate and the light source module along the opposite direction of the first direction.