Gamma Voltage Switching for Flicker-Free Display Mode Changes
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Solution Overview
Problem
Existing display devices face limitations in storing and switching gamma voltage data groups due to limited capacity and rewriteability of integrated circuits, which restricts their application scenarios and leads to issues like flickering and inability to adapt to various display modes.
Innovation Solution
Implementing a gamma voltage data group switching module that utilizes a first storage unit, such as flash memory, to pre-store multiple gamma voltage data groups for different scenarios, and transfers them to a second storage unit, like RAM, within the display-driver integrated circuit, enabling flexible switching and reworking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If gamma voltage data groups are stored in the display-driver integrated circuit, then switching between different application scenarios is enabled, but the limited storage capacity and rewriteability of the integrated circuit restricts the number of stored data groups
Solution Approach 1:
The patent divides the storage system into two parts: a first storage unit (external storage device) for storing multiple gamma voltage data groups, and a second storage unit (internal memory of display-driver integrated circuit) for storing currently needed data groups. This segmentation allows the system to access a large quantity of data groups from external storage while maintaining fast access to the limited internal storage capacity.
Solution Approach 2:
The patent introduces a storage control circuit as an intermediary between the first storage unit and the second storage unit. This control circuit manages the transfer of gamma voltage data groups between the two storage units, enabling efficient switching and data management without direct access conflicts.
2Adaptability or versatility
If multiple gamma voltage data groups are stored in the integrated circuit, then switching between display modes is enabled, but the limited rewriteability causes flickering and inability to adapt to various display modes
Solution Approach 1:
The patent pre-stores multiple gamma voltage data groups corresponding to different application scenarios in the first storage unit before switching is needed. When switching between display modes is required, the system only needs to transfer the appropriate pre-stored data group to the second storage unit, avoiding the need for real-time calculation or unstable re-writing operations during the switching process.
3Adaptability or versatility
If gamma voltage data groups are transferred between storage units during switching, then adaptability to various scenarios is improved, but the transfer process may cause display flickering
Solution Approach 1:
The patent implements periodic black frame insertion during the data transfer process. Instead of continuously transferring data which would cause visible flickering, the system inserts black frames at regular intervals, allowing the transfer to complete in a controlled manner that minimizes visual disruption and maintains display stability.
Data Source
AI summary
A display device, a gamma voltage data group switching method and module. The display device includes a display-driver integrated circuit and a first storage unit. The display-driver integrated circuit includes a second storage unit, and the display device includes a gamma voltage data group switching module. The gamma voltage data group switching module is configured to pre-store, in the first storage unit, multiple groups of gamma voltage data groups respectively applied to various application scenarios; when switching of an application scenario of the display device, load a gamma voltage data group corresponding to the current application scenario and stored in the first storage unit into the second storage unit.