Light Sensor Nesting in Display Driving Circuits
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Solution Overview
Problem
The integration of light sensors in display panels reduces the opening area and resolution of the display panel, affecting the display effect.
Innovation Solution
The light sensors are positioned within the range of the driving circuits on the substrate, optimizing their placement to minimize the occupation of pixel space and improve resolution, allowing for better display performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If light sensors are integrated into the display panel, then the light sensor can detect display brightness, but the opening area of the display panel decreases
Solution Approach 1:
The light sensor is positioned within the range of the driving circuit's orthographic projection, effectively nesting the light sensor within the existing circuit area. This allows the light sensor to be integrated without expanding the overall occupied space, thereby maintaining the opening area while enabling brightness detection functionality.
Solution Approach 2:
The patent utilizes the vertical dimension by positioning the light sensor beneath the driving circuit in the orthographic projection view. This three-dimensional arrangement allows both components to coexist in the same planar footprint, effectively using the Z-axis to resolve the space conflict between light sensing and display opening area.
2Measurement precision
If light sensors occupy opening area, then light sensing function is achieved, but the resolution of the display panel decreases
Solution Approach 1:
The light sensor is nested within the driving circuit area, utilizing space that would otherwise be dedicated to circuit functionality. This nesting approach ensures that the light sensor does not encroach upon the pixel array area, thereby preserving the display panel's resolution while enabling brightness detection.
Solution Approach 2:
The driving circuit area is designed to serve multiple functions: it houses both the driving circuit components and the light sensor. This multi-functional utilization of the same spatial region allows the display panel to maintain its resolution while integrating the light sensing capability without requiring additional dedicated space.
3Ease of manufacture
If light sensors are positioned outside the driving circuit area, then light sensor placement is simple, but the pixel space occupation increases
Solution Approach 1:
The light sensor is positioned within the orthographic projection range of the driving circuit, nesting it within the existing circuit footprint. This arrangement does not increase the overall pixel space occupation because the light sensor shares the same planar space already allocated to the driving circuit, thereby maintaining ease of manufacture while minimizing space usage.
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 the pixel space occupation, enhances the display panel's resolution, and improves the display effect by maintaining a higher signal-to-noise ratio and detection accuracy for the light sensors.
Implementation Method 1
a light sensor for detecting the display brightness of a display panel may be provided
Data Source
AI summary
A display substrate, a display panel, and a display device are provided. The display substrate includes a substrate, a plurality of sub-pixels located on the substrate, a plurality of driving circuits and a plurality of light sensors, an orthographic projection of the light sensors on the substrate is within a range of an orthographic projection of the driving circuits on the substrate.