Display Device Pause Period Luminance Control
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Solution Overview
Problem
Existing display devices face challenges in maintaining display quality during pause periods while reducing power consumption, as techniques that stop peripheral circuits during these periods can lead to flicker and further deterioration in display quality.
Innovation Solution
A display device and method that include a scanning line driving circuit, signal line driving circuit, driving control section, detection data obtaining section, and luminance control signal outputting section, which continue to adjust the luminance of the screen during pause periods based on external light intensity, preventing flicker and maintaining quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If peripheral circuits are stopped during pause period to reduce power consumption, then power consumption is reduced, but display quality deteriorates and flicker occurs
Solution Approach 1:
The invention segments the pause period into multiple sub-periods (first pause period and second pause period) with different control strategies. During the first pause period, the backlight is controlled based on external light detection, while during the second pause period, the backlight is turned off. This segmentation allows the system to maintain display quality during critical periods while achieving power savings during less critical periods, resolving the contradiction between power consumption and display quality.
Solution Approach 2:
The invention dynamically adjusts the backlight control strategy based on the timing within the pause period. The control circuit transitions from active backlight control during the first pause period to backlight shutdown during the second pause period. This dynamic adjustment allows the system to optimize both display quality and power consumption at different moments within the pause period, rather than using a static approach.
2Use of energy by moving object
If backlight is completely turned off during pause period, then power consumption is reduced, but display quality deteriorates further
Solution Approach 1:
The pause period is divided into two distinct phases: the first pause period where backlight control is actively maintained based on external light conditions, and the second pause period where backlight is turned off. This segmentation ensures that display quality is preserved during the initial phase while power consumption is reduced during the later phase, achieving a balance between the two conflicting requirements.
Solution Approach 2:
The invention performs preliminary backlight control during the first pause period before completely shutting off the backlight in the second pause period. By maintaining backlight control in advance during the first pause period, the system prepares for the upcoming shutdown while minimizing the impact on display quality, as users may be less sensitive to display changes during the transition period.
Data Source
AI summary
A display device includes: a timing controller (10) for driving a scanning line driving circuit (4) and a signal line driving circuit (6) by providing a scanning period (T1) and a pause period (T2) which follows the scanning period (T1); a data analyzing section (101) for obtaining detection data on an external light intensity; and a BL luminance setting section (104) for outputting, at least during the pause period (T2), a BL control signal for adjusting, in accordance with the detection data obtained by the data analyzing section (101), a luminance of light to be emitted to a screen.