Display Panel Imaging Area Layout With Laser-Formed Light Windows
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Solution Overview
Problem
Existing display panels face challenges in implementing a full-screen display due to the presence of cameras, which limit screen size and require additional manufacturing processes that increase costs and reduce transmittance in imaging areas.
Innovation Solution
A display panel design with a first area for high-resolution pixels and a second area for low-resolution pixel groups, featuring light-transmitting portions between pixel groups, formed by removing part of the second electrode using a laser beam, allowing for a simplified manufacturing process without additional etching masks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If pixels are disposed in the imaging area to enable full-screen display, then the screen coverage is improved, but the transmittance is lowered and luminance is reduced
Solution Approach 1:
The imaging area is divided into multiple pixel groups with light-transmitting portions between them. This segmentation allows the screen to maintain full coverage while creating transparent regions that improve transmittance and luminance for the imaging function.
Solution Approach 2:
Different regions of the display panel have different properties: the first area has continuous pixel structures for display, while the second area has pixel groups with light-transmitting portions for imaging. This local differentiation optimizes both display coverage and imaging transmittance.
2Illumination intensity
If additional etching masks are added to improve transmittance in the imaging area, then the transmittance is improved, but the manufacturing complexity and cost are increased
Solution Approach 1:
The etching masks for forming pixel groups and the masks for forming light-transmitting portions are combined into a single mask structure. This merging eliminates the need for separate etching processes, reducing manufacturing complexity while maintaining the transmittance improvement.
Solution Approach 2:
The capacitor electrode pattern serves dual purposes: it functions as an electrical component for pixel operation and simultaneously serves as an etching mask to define the light-transmitting portions. This multi-functionality reduces the number of additional masks needed.
3Illumination intensity
If the second electrode is completely removed to maximize transmittance, then the transmittance is improved, but the manufacturing precision and image quality are reduced due to residual films
Solution Approach 1:
The second electrode is selectively removed only from the light-transmitting portions between pixel groups, while being retained in the pixel areas where it is needed for electrical function. This selective extraction maximizes transmittance where needed while maintaining manufacturing precision and image quality.
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 design enhances transmittance in the imaging area, reduces manufacturing costs, and minimizes the margin between the display and imaging areas, enabling full-screen displays with improved image quality.
Implementation Method 1
forming the light-transmitting portion by removing at least part of a second electrode of the imaging area through the irradiation of the laser beam
Data Source
AI summary
A method of fabricating a display panel including a display area and an imaging area, the display area having a first pixel area in which a plurality of pixels are disposed, the imaging area having a second pixel area in which a plurality of pixel groups are disposed and at least one light-transmitting portion disposed between the plurality of pixel groups, can include forming a capacitor electrode in the second pixel area of the imaging area, and forming the at least one light-transmitting portion by removing at least part of a second electrode of the imaging area through an irradiation of a laser beam using the capacitor electrode as a mask.