OLED Data Adjusting Unit Subfield Black Time Memory Reduction
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Solution Overview
Problem
The existing active matrix organic light emitting device (OLED) driving method requires multiple display memories to manage data transmission efficiently, leading to increased costs and potential degradation of components like TFTs, capacitors, and OLEDs, necessitating a method to enhance sampling efficiency and accuracy for monitor pixels.
Innovation Solution
The implementation of a data adjusting unit that converts image data frames into subfields with inserted black times, allowing for reduced display memory units and improved sampling efficiency through a sample hold unit that controls voltage supplied to subpixels based on sampled currents from monitor pixels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple display memory units are used for data transmission and sampling, then data transmission efficiency is improved, but device complexity and fabrication cost increase
Solution Approach 1:
The patent merges the functions of multiple display memory units into a single display memory unit by implementing a unified memory structure that handles both data transmission and sampling operations. This consolidation reduces the number of separate memory units from two or more to one, thereby decreasing device complexity and fabrication cost while maintaining data transmission efficiency through optimized memory access protocols.
Solution Approach 2:
The single display memory unit is designed to perform multiple functions: it serves as both a data transmission buffer and a sampling storage unit. By making the memory unit universal, the patent eliminates the need for separate dedicated memory units for different functions, thus reducing overall device complexity while preserving the efficiency benefits of having multiple specialized units.
2Measurement precision
If multiple display memory units are used for sampling operations, then sampling accuracy is improved, but manufacturing cost increases
Solution Approach 1:
The patent combines the sampling functions that previously required multiple separate memory units into a single integrated display memory unit. This merger reduces fabrication cost by eliminating redundant manufacturing steps and components, while sampling accuracy is maintained through implemented error correction mechanisms and optimized sampling algorithms within the unified memory structure.
Solution Approach 2:
The patent changes the operational parameters of the single display memory unit to achieve sampling accuracy equivalent to multiple units. This includes optimizing memory access timing, implementing advanced sampling protocols, and adjusting data retrieval sequences to maximize precision while using fewer physical memory units, thereby reducing manufacturing cost.
3Stability of the object's composition
If two or more display memories are used for continuous read and write operations, then data continuity is improved, but device complexity increases
Solution Approach 1:
The patent merges multiple display memory units into a single unified memory unit that handles both continuous reading and writing operations. This consolidation reduces device complexity by eliminating the need for multiple separate memory units, while data continuity is maintained through implemented buffer management strategies and optimized data flow control within the unified memory structure.
Solution Approach 2:
The patent implements dynamic memory allocation and access strategies within the single display memory unit to maintain data continuity. The memory unit dynamically adjusts its operational mode between reading and writing based on real-time requirements, allowing continuous data flow without the need for multiple static memory units, thereby reducing device complexity while preserving data continuity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach reduces the number of display memories required, enhances data transmission efficiency, and increases sampling accuracy and efficiency of monitor pixels, thereby reducing fabrication costs and maintaining component integrity.
Implementation Method 1
the plurality of subfields each include an emitting layer, and at least one of the emitting layers includes a phosphorescence material
Data Source
AI summary
An organic light emitting device is disclosed. The organic light emitting device includes a display unit including a plurality of subpixels, a host memory unit that stores image data received from the outside by the frame, a data adjusting unit that fetches the image data frames stored in the host memory unit by the bit and converts one frame into a plurality of subfields and one display memory unit that stores the image data frame converted into the plurality of subfields by the data adjusting unit. When the data adjusting unit converts the frame into the plurality of subfields, the data adjusting unit inserts a black time into at least one of the plurality of subfields.