Splicing Display Spectrum Matching for Seam Image Uniformity
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Solution Overview
Problem
Splicing display devices often exhibit uneven images due to obvious seams at splicing positions, caused by space limitations, glass cutting tolerance, and peripheral wiring, which affect the display effect of final splicing products.
Innovation Solution
A splicing display device comprising at least two first splicing screens with first blue light-emitting units and yellow fluorescent layers, and a second splicing screen sandwiched between them, featuring second blue light-emitting units with color-gamut adjusting units that ensure the light-emitting spectrum is consistent with the first screens, reducing color gamut differences and improving image display at seams.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If splicing display devices are constructed by assembling multiple display screens, then larger display sizes can be achieved, but obvious seams appear at splicing positions due to space limitations, glass cutting tolerance, and peripheral wiring
Solution Approach 1:
A third screen is introduced as an intermediary component between the first and second screens at the splicing position. This third screen acts as a mediator to bridge the gap and mismatch between adjacent screens, effectively hiding the seams caused by manufacturing tolerances and peripheral wiring. The third screen's content is specifically designed to blend with both adjacent screens, creating a seamless visual transition.
Solution Approach 2:
The content displayed on the third screen at the splicing position is locally optimized to match the surrounding areas. By adjusting the brightness, contrast, and image content specifically at the splicing region, the third screen creates a gradual transition zone that masks the seams. This local quality adjustment ensures that the splicing position does not stand out from the rest of the display.
2Reliability
If different color gamuts exist at splicing positions, then abnormal images appear, but maintaining consistent color gamut across all screens increases device complexity
Solution Approach 1:
The third screen serves as an intermediary for color gamut calibration between adjacent screens with different color characteristics. By positioning the third screen at the splicing location and calibrating its color output to be intermediate between the two adjacent screens, it creates a smooth color transition zone. This mediator approach allows screens with different color gamuts to coexist while maintaining overall image consistency.
Solution Approach 2:
The brightness, contrast, and color temperature parameters of the third screen are specifically adjusted to create a gradual transition between adjacent screens with different color gamuts. By changing these display parameters locally at the splicing position, the system achieves color consistency without requiring all screens to be identical, thus reducing the overall complexity of the system.
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 effectively prevents abnormal images caused by different color gamuts at seams, enhancing the overall image display effect by ensuring consistent light-emitting spectra across the splicing screens.
Implementation Method 1
each of the plurality of first light-emitting units includes a first blue light-emitting unit and a first yellow fluorescent layer coated on the first blue light-emitting unit
Implementation Method 2
color-gamut adjusting units are disposed on at least a part of the second blue light-emitting units, and a light-emitting spectrum of the second blue light-emitting units through the color-gamut adjusting units is consistent to a light-emitting spectrum of the first splicing screens
Data Source
AI summary
A display device includes at least one second splicing screen and at least two first splicing screens. The first splicing screen includes a first substrate, a first blue light-emitting unit disposed on the first substrate, and a first yellow fluorescent layer coated on the first blue light-emitting unit. The second splicing screen includes a second substrate and a plurality of second light-emitting units disposed on the second substrate. At least a part of the plurality of second light-emitting units is second blue light-emitting units. Color-gamut adjusting units are disposed on at least a part of the second blue light-emitting units. A light-emitting spectrum of the second blue light-emitting units through the color-gamut adjusting units is consistent to a light-emitting spectrum of the first splicing screens.