AMOLED Brightness Compensation via Mainboard Data Storage
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Solution Overview
Problem
Active-matrix organic light-emitting diode (AMOLED) display panels suffer from brightness unevenness due to production processes and long operating times, leading to residual images and affected display quality, with conventional methods limited by storage space and cost in additional storage devices.
Innovation Solution
Storing brightness compensation data in a mainboard instead of an additional storage device, utilizing higher-speed communication protocols like MIPI to enhance accuracy and reduce costs, and generating updated compensation data based on operating time and user input to adjust image data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If brightness compensation data is stored in an additional storage device of the DDIC, then the display panel can compensate for brightness unevenness, but the storage space is limited and the cost increases
Solution Approach 1:
The patent extracts the brightness compensation data storage function from the DDIC's additional storage device and relocates it to the mainboard's storage space. This allows the DDIC to focus on its primary function of driving the display panel while the mainboard handles the storage of compensation data, effectively resolving the storage space limitation without compromising brightness compensation capability
Solution Approach 2:
The mainboard's storage space is utilized for multiple purposes: storing system operations data, user information, and brightness compensation data. This multi-functional use of the mainboard's storage capacity eliminates the need for dedicated additional storage devices in the DDIC, reducing both cost and complexity while maintaining full brightness compensation functionality
2Reliability
If an additional storage device is added to the DDIC for storing brightness compensation data, then brightness unevenness can be compensated, but the device complexity and cost increase
Solution Approach 1:
The patent merges the brightness compensation data storage function with the mainboard's existing storage capabilities. By combining these functions into a single storage location on the mainboard, the system eliminates the need for separate additional storage devices in the DDIC, thereby reducing device complexity and component count while preserving brightness compensation capability
Solution Approach 2:
The mainboard's storage system is designed to handle multiple types of data including system operations, user information, and brightness compensation data. This universal storage approach eliminates the need for specialized additional storage devices, simplifying the overall device structure and reducing costs without affecting the brightness compensation function
3Device complexity
If conventional storage methods are used in the DDIC, then the structure remains simple, but the storage space for brightness compensation data is insufficient
Solution Approach 1:
The patent extracts the brightness compensation data from the DDIC's limited additional storage device and relocates it to the mainboard's abundant storage space. This extraction resolves the storage capacity issue while keeping the DDIC's structure simple and focused on its primary driving function
Solution Approach 2:
The patent changes the spatial dimension of data storage by moving brightness compensation data from the DDIC's local additional storage device to the mainboard's storage space. This dimensional shift in storage architecture provides significantly more storage capacity without increasing the complexity of the DDIC's internal structure
Data Source
AI summary
Embodiments of the present disclosure relate to a method for compensating brightness unevenness of a display device. In an embodiment of the present disclosure, a display device includes a display screen, a data driving circuit, and a mainboard. The method for compensating brightness unevenness according to an embodiment of the present disclosure includes obtaining, by the data driving circuit, first brightness compensation data from the mainboard. Then, the data driving circuit adjusts image data according to the first brightness compensation data.