Display Controller Adjusting Brightness for Close Viewing
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Solution Overview
Problem
Conventional electronic whiteboards are designed for viewing at a distance, leading to discomfort for users who need to operate or explain content up close due to unsuitable display features like excessive brightness.
Innovation Solution
A display device with a display panel, touch sensors, and a display controller that adjusts display features such as brightness or color temperature based on touch sensing results to provide a more comfortable viewing experience for users close to the device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the display device is designed for viewing at a distance with high brightness, then the display visibility is improved, but the visual comfort deteriorates when users view up close
Solution Approach 1:
The display device dynamically adjusts brightness and color temperature based on the user's viewing distance. When a user approaches within a threshold distance, the system automatically reduces brightness and adjusts color temperature to warmer tones, thereby maintaining visibility while reducing eye strain caused by excessive brightness at close range
Solution Approach 2:
The system changes display parameters (brightness level and color temperature) according to the detected viewing distance. By sensing the user's proximity and adjusting these parameters accordingly, the device optimizes both visibility and visual comfort for different viewing scenarios
2Reliability
If the display features are optimized for distant viewing, then the display performance is improved, but the usability deteriorates for close-up operations
Solution Approach 1:
The display device dynamically adapts its features based on real-time detection of user proximity. For distant viewing, it maintains high brightness and cooler color temperature for optimal visibility. When a user approaches for close-up operations, it automatically adjusts to lower brightness and warmer tones, ensuring both display performance and operational ease are maintained across different usage scenarios
3Illumination intensity
If the brightness is increased for better visibility, then the display clarity is improved, but the visual comfort deteriorates for close viewing
Solution Approach 1:
The system automatically adjusts brightness and color temperature parameters based on detected viewing distance. At close viewing distances, it reduces brightness and shifts color temperature to warmer values, thereby maintaining display clarity while minimizing eye strain caused by excessive brightness
Data Source
AI summary
A display device includes a display panel, at least one touch sensor, a touch sensor controller and a display controller. The at least one touch sensor senses and outputs a touch sensing signal. The touch sensor controller, electrically coupled to the touch sensor, receives the touch sensing signal and generates a touch sensing result accordingly. The display controller, electrically coupled to the display panel and the touch sensor controller, receives graphic data to generate first display data and determines whether to adjust the first display data to second display data and transmit the second display data to the display panel according to the touch sensing result. The first display data has first display a feature, the second display data has a second feature, and the first display feature is different from the second display feature. An operating method of the display device is also provided.