Misaligned Lamp Junctions for Uniform Panel Exposure
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Solution Overview
Problem
Conventional PSA exposure apparatuses face issues with uneven light intensity due to long lamps and non-uniform internal coatings, leading to insufficient exposure evenness, particularly in large-sized panel exposure processes.
Innovation Solution
The exposure system employs a light source device with multiple lamp sets arranged along a first direction, where adjacent lamp sets have misaligned junctions, allowing for relative movement between the light source and the object to ensure uniform irradiation, thereby achieving high exposure evenness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If long lamps are used to cover large-sized panels, then the exposure area is increased, but the light intensity becomes uneven due to non-uniform internal coating
Solution Approach 1:
The patent divides the single long lamp into multiple lamp sets arranged along the first direction, with each lamp set containing multiple lamps extending along the second direction. This segmentation allows the exposure system to cover large panels while maintaining uniform light intensity through multiple discrete light sources instead of one long lamp with non-uniform coating.
Solution Approach 2:
The patent intentionally misaligns the junctions of adjacent lamp sets along the first direction, creating an asymmetric configuration. This asymmetric arrangement ensures that the light intensity distribution from adjacent lamp sets does not create overlapping hot spots, thereby achieving more uniform overall exposure evenness across the panel.
2Device complexity
If a single long lamp is used for large panel exposure, then the device complexity is reduced, but the light intensity uniformity deteriorates
Solution Approach 1:
The patent segments the single long lamp into multiple lamp sets arranged along the first direction, with each lamp set containing multiple lamps extending along the second direction. This segmentation improves light intensity uniformity by distributing the light source across multiple discrete units, each contributing to uniform illumination of the panel.
Solution Approach 2:
The patent transitions from a single-dimensional long lamp to a two-dimensional array of lamp sets, where lamps are arranged along both the first direction (across the panel width) and the second direction (across the panel length). This dimensional change enables comprehensive coverage of large panels while maintaining uniform light intensity through multiple light sources positioned at different locations.
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 configuration reduces exposure uniformity percentage, enhancing the evenness of light exposure across the object, improving the optical properties of display panels by ensuring consistent alignment of liquid crystal molecules.
Implementation Method 1
the UV light is provided to cure the light-reaction monomers in the liquid crystal molecules, and the cured light-reaction monomers are arranged according to the pattern of a patterned transparent conductive layer of the TFT substrate. Accordingly, the cured light-reaction monomers can achieve the purpose of liquid crystal alignment.
Data Source
AI summary
An exposure system and a manufacturing method of a component of a display panel are disclosed. The exposure system includes a carrying device and a light source device. The carrying device carries the object. The light source device, including a plurality of lamp sets arranged along a first direction, emits light to irradiate the object. The lamp sets include a first lamp set and a second lamp set, which are disposed adjacent to each other. The first lamp set has a first lamp and a second lamp, which are extending along a second direction. The second lamp set has a third lamp and a fourth lamp, which are extending along the second direction. The first and second lamps are connected with a first junction, and the third and fourth lamps are connected with a second junction. The first junction and the second junction are misaligned on the first direction.