Display Device Driving Chip Light Transmittance Optimization
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Solution Overview
Problem
Display devices with imaging functions face challenges in balancing light transmittance and pixel density in the optical component arrangement area, leading to adverse effects on overall image display and imaging quality.
Innovation Solution
A display device with a driving chip that outputs driving current signals directly to light-emitting elements in the optical component arrangement area, eliminating the need for pixel circuits in these areas, thereby reducing metal wire count and increasing light transmittance while maintaining image quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If pixel density in the optical component arrangement area is reduced to increase light transmittance, then light transmittance is improved, but pixel density becomes excessively different from the display area, affecting overall image display
Solution Approach 1:
The patent divides the optical component arrangement area into multiple sub-regions, each with different pixel densities. This segmentation allows different areas to have optimized pixel densities for their specific functions, increasing overall light transmittance while maintaining display quality in critical areas.
Solution Approach 2:
Different pixel density configurations are applied to different local areas within the optical component arrangement area. Areas requiring higher light transmittance have lower pixel density, while areas requiring better display quality maintain higher pixel density, resolving the contradiction between light transmittance and display quality.
2Device complexity
If pixel density in the optical component arrangement area is increased to reduce display effect, then image display is improved, but light transmittance decreases, affecting imaging effect
Solution Approach 1:
The optical component arrangement area is segmented into multiple sub-areas with different pixel density levels. This allows the system to achieve overall pixel density uniformity across the display while maintaining high light transmittance in specific sub-areas through localized low-density regions.
Solution Approach 2:
Instead of uniformly increasing pixel density across the entire optical component arrangement area, the patent applies partial action by selectively maintaining higher pixel density only in specific sub-areas where display quality is critical, while allowing lower pixel density in other areas to preserve light transmittance.
3Illumination intensity
If pixel circuits are removed from the optical component arrangement area to increase light transmittance, then light transmittance is improved, but device complexity increases due to separate driving mechanisms
Solution Approach 1:
The patent merges the driving mechanisms by using the same pixel circuit to control both display elements and light-emitting elements within each pixel unit. This unified approach eliminates the need for separate driving mechanisms, maintaining device simplicity while achieving high light transmittance through selective light emission.
Solution Approach 2:
The pixel circuit is designed with multi-functionality, serving both as a display driver and a controller for light-emitting elements. This universal approach allows the same circuit to perform multiple functions, reducing overall device complexity while enabling high light transmittance in the optical component arrangement area.
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 solution enhances light transmittance and reduces the difference in pixel density between the optical component and display areas, improving overall image display and imaging quality by increasing the number of light-emitting elements without adding pixel circuits.
Implementation Method 1
a second driving current signal to drive the second light-emitting element to emit light
Data Source
AI summary
Provided is a display device including: a display panel; and a driving chip. The display panel includes: sub-pixels including first sub-pixels and second sub-pixels located, each first sub-pixel including a first pixel circuit and a first light-emitting element, and each second sub-pixel including a second light-emitting element. The driving chip includes: a data signal output module electrically connected to the first pixel circuit and configured to output a first data signal to the first pixel circuit, so that the first pixel circuit outputs, in response to the first data signal, a first driving current signal for driving the first light-emitting element to emit light; and a driving current signal output module electrically connected to the second light-emitting element and configured to output a second driving current signal to the second light-emitting element, so that the second light-emitting element emits light in response to the second driving current signal.