Display Panel Light Transmittance via Localized Sensor Patterns
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Solution Overview
Problem
Display devices face challenges in achieving high transmittance in sensing areas while maintaining effective optical signal reception and transmission, which affects the performance of electro-optical modules such as cameras and sensors.
Innovation Solution
The implementation of a display device with a display panel and an input sensor layer, where the display panel includes a first area with high light transmittance and a second area with lower transmittance, and the input sensor layer features specific sensing patterns and openings to optimize light transmission and reception, allowing optical signals to pass through the high transmittance area while blocking them in the lower transmittance area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the display panel uses a uniform structure across the display area, then the manufacturing process is simple, but the light transmittance in the sensing area is reduced
Solution Approach 1:
The display panel is divided into a first area (sensing area) and a second area (non-sensing area), where the first area has a first pixel structure with higher light transmittance and the second area has a second pixel structure with lower light transmittance. This local differentiation allows the sensing area to receive more external light while the non-sensing area maintains normal display functionality, resolving the contradiction between uniform manufacturing simplicity and localized transmittance requirements.
2Reliability
If the input sensor layer has uniform openings across the display area, then the manufacturing process is simple, but the optical signal reception is not optimized
Solution Approach 1:
The input sensor layer includes a first sensing pattern in the first area with first openings and a second sensing pattern in the second area with second openings. The first sensing pattern is configured to receive optical signals with higher transmittance, while the second sensing pattern has lower transmittance. This localized differentiation optimizes optical signal reception in the sensing area while maintaining manufacturing feasibility through standardized patterning processes.
3Illumination intensity
If the first area has high light transmittance for sensing, then external natural light can be utilized, but the display quality in that area may be compromised
Solution Approach 1:
The display area is segmented into a first area with first pixels having higher light transmittance for sensing functions and a second area with second pixels having lower light transmittance for standard display functions. This segmentation allows the high transmittance first area to effectively receive external natural light while the second area maintains normal display quality, and the distinct pixel structures enable separate optimization for each functional requirement.
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 enhances the light transmittance in the sensing area, improving the performance of electro-optical modules by allowing external natural light to be utilized while maintaining the functionality of the display device.
Implementation Method 1
a first area through which an optical signal passes
Implementation Method 2
a second area adjacent to the first area and by which the optical signal is blocked
Data Source
AI summary
In a display device according to the present disclosure, the display device includes a display panel and an input sensor layer. The display panel includes a display area that includes a first area through which an optical signal passes and a second area by which the optical signal is blocked. The first area includes a first sub-area having a first light transmittance and a second sub-area having a second light transmittance lower than the first light transmittance. The input sensor layer includes a first sensing pattern that overlaps the second area and includes first openings, and a second sensing pattern that overlaps the first area. The second sensing pattern includes second openings that overlap the second sub-area and are larger than the first openings, and at least one third opening that overlaps the first sub-area and is larger than the second openings.