Display Device Light Control Circuit Brightness Uniformity
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Solution Overview
Problem
Display panels face challenges in maintaining uniform brightness across pixels due to manufacturing variations, leading to suboptimal display quality, as existing correction methods like adjusting backlight or pixel circuit driving signals are not ideal.
Innovation Solution
A display device comprising a display circuit, sensor, light control circuit, and processing circuit that calculates brightness difference ratios between adjacent display units and adjusts light transmittance through light control units to correct brightness imbalances, using a camera to detect unbalanced areas and adjusting either backlight or pixel circuit signals accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If manufacturing processes are maintained as is, then production efficiency and cost are preserved, but brightness uniformity across display units deteriorates
Solution Approach 1:
The patent introduces a light control circuit as an intermediary component between the backlight and display units. This circuit includes multiple light control units that can independently adjust light transmittance for different display units, acting as a mediator to compensate for brightness inconsistencies without requiring changes to the manufacturing process of the display units themselves.
Solution Approach 2:
The light control circuit is divided into multiple light control units, each corresponding to a specific display unit. Each light control unit can independently adjust its light transmittance based on the specific brightness characteristics of its corresponding display unit, enabling localized compensation for manufacturing variations without affecting the entire display panel uniformly.
2Manufacturing precision
If existing correction methods (backlight or pixel circuit adjustment) are used, then brightness uniformity is improved, but manufacturing process complexity and product line changes increase
Solution Approach 1:
The light control circuit is segmented into multiple independent light control units, each corresponding to a specific display unit. This segmentation allows for independent adjustment of each unit's light transmittance, enabling precise correction of brightness non-uniformity without requiring complex changes to the overall manufacturing process or product line.
Solution Approach 2:
The light control circuit serves as an intermediary layer that can be added to existing display panels without fundamentally changing the manufacturing processes for the display units or pixel circuits. This intermediary approach allows correction of brightness issues while maintaining compatibility with existing manufacturing capabilities.
3Illumination intensity
If light transmittance is adjusted for each display unit, then brightness uniformity is improved, but device complexity increases
Solution Approach 1:
The light control circuit is designed with light control units that can serve multiple functions: they can independently adjust light transmittance for brightness uniformity correction, and can also be controlled to achieve overall brightness adjustment for the entire display panel. This multi-functionality reduces the need for separate control mechanisms.
Solution Approach 2:
Each light control unit is designed to independently control light transmittance for its corresponding display unit, enabling localized brightness adjustment. This local control approach allows for precise correction of brightness non-uniformity without requiring complex global control systems.
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
Improves image uniformity by dynamically adjusting light transmittance to match brightness across display units, enhancing overall display quality without requiring significant changes to existing manufacturing processes or product lines.
Implementation Method 1
The sensor is configured to obtain the first brightness value and the second brightness value
Implementation Method 2
the light control circuit adjusts a light transmittance of the plurality of light control units according to a plurality of light control signals
Data Source
AI summary
The present disclosure relates to a display device including a display circuit, a sensor, a light control circuit and a processing circuit. The display unit includes a first display unit and a second display unit adjacent to the first display unit. The sensor obtains a first brightness value of the first display unit and a second brightness value of the second display unit. The light control circuit adjusts the light transmittance of multiple light control units of the light control circuit. The processing circuit calculates a brightness difference ratio value according to the first brightness value and the second brightness value. When the brightness difference ratio value is greater than a threshold value, the processing circuit adjusts a light control signal to change the light transmittance corresponding to the position of the second display unit.