Display Backlight Circuit With Area Boosting and Local Dimming
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Solution Overview
Problem
Existing display technologies fail to adjust light luminance appropriately in areas outside the primary display area, leading to poor display quality.
Innovation Solution
A circuit device with a luminance analysis circuit, dimming circuit, and area boosting circuit that analyzes image data to adjust light source luminance and perform area boosting processes, enhancing luminance in specific areas of the display.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If the luminance of light source elements in areas outside the primary display area is controlled to be lower, then power consumption is reduced, but display quality in those areas deteriorates
Solution Approach 1:
The patent applies local quality by differentiating light source control into two distinct regions: the first light emitting area corresponding to the primary display area maintains higher luminance for quality display, while the second light emitting area covering other regions uses lower luminance to reduce power consumption. This spatial differentiation of light emission properties resolves the contradiction between energy efficiency and display quality in different zones.
Solution Approach 2:
The light emitting area is segmented into two distinct regions: the first light emitting area aligned with the primary display area and the second light emitting area covering other regions. This segmentation allows independent luminance control for each region, enabling the system to optimize power consumption in non-critical areas while maintaining display quality in the primary area.
2Loss of energy
If the luminance of light source elements in areas outside the primary display area is controlled regardless of display image, then power consumption is reduced, but display quality in those areas deteriorates
Solution Approach 1:
The patent implements dynamic control of light source luminance in the second light emitting area based on the actual display image content. The display control unit adjusts luminance levels according to image characteristics, enabling the system to adapt to different display scenarios. This dynamic adjustment resolves the contradiction by providing both power savings and appropriate display quality adaptation when needed.
Data Source
AI summary
A circuit device includes a luminance analysis circuit, a dimming circuit, and an area boosting circuit. The luminance analysis circuit luminance analyzes image data of an input image to output luminance information. The dimming circuit determines light source luminance information indicating light emission luminance at which each light source element of the plurality of light source elements emits light in accordance with the luminance information. The area boosting circuit performs an area boosting process on the dimming circuit. The area boosting process is a process in which the light emission luminance of the light source element corresponding to a first area is higher when the area boosting process is performed on the first area of the input image than when the area boosting process is not performed on the first area.