Pixel Emission Control Circuit for Synchronized RGB Display Lighting
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Solution Overview
Problem
Existing display apparatuses face challenges in achieving improved display quality and efficiency, particularly in managing the luminance control of pixels with diverse usage scenarios and varied shapes.
Innovation Solution
The display apparatus incorporates a pixel structure with multiple emission control transistors and capacitors, allowing for synchronized emission periods and variable voltage levels to optimize the display of different colors, enabling efficient sequential writing and simultaneous lighting of pixels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If multiple display elements per pixel are controlled with separate emission control transistors, then color accuracy and display quality are improved, but device complexity increases
Solution Approach 1:
The patent merges the control of multiple display elements by using a shared emission control signal line that controls multiple emission control transistors simultaneously. This allows separate control of each display element while reducing the number of independent control lines, thereby improving display quality without proportionally increasing device complexity
Solution Approach 2:
The patent segments the control into sub-frames where different display elements are activated at different times. Each display element has its own emission control transistor for precise control, but the segmentation in time domain reduces the simultaneous control complexity, resolving the contradiction between precise control and device complexity
2Manufacturing precision
If sequential writing of data signals is used for multiple display elements, then manufacturing precision is improved, but productivity decreases
Solution Approach 1:
The patent employs periodic action by dividing the display frame into multiple sub-frames, where each sub-frame sequentially activates different display elements. This periodic segmentation allows accurate sequential writing of data signals while maintaining overall productivity through the use of multiple sub-frames within a single frame period
Solution Approach 2:
The patent maintains continuity of useful action by ensuring that while one display element is being written, other elements are in emission or preparation phases. The sequential writing across multiple sub-frames creates a continuous display output, preventing idle time and maintaining productivity despite the sequential nature of data signal writing
Data Source
AI summary
A display apparatus includes a plurality of pixels connected to gate control lines and data lines. Each of the plurality of pixels may include first to third display elements emitting light of different colors, a first transistor having a gate connected to a first node, a first terminal connected to a first voltage line, and a second terminal connected to a second node, a first emission control transistor connected between the second node and the first display element, a second emission control transistor connected between the second node and the second display element, and a third emission control transistor connected between the second node and the third display element. A same emission control signal may be supplied to the corresponding emission control transistor included in each of the plurality of pixels.