Shared Pixel Circuit for Full-Color Display in Limited Area
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The division of pixels into sub-pixels for color display increases circuit area, affecting the aperture ratio and brightness of display panels, especially in augmented reality applications where higher brightness and resolution are demanded.
Innovation Solution
A pixel circuit design utilizing a shared driving circuit and light-emitting control circuit to reduce circuit area and improve aperture ratio, enabling full-color light emission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If pixels are divided into sub-pixels for color display, then color display capability is improved, but circuit area increases and aperture ratio decreases
Solution Approach 1:
The patent merges the driving circuits of multiple sub-pixels into a shared driving circuit. Instead of providing separate driving circuits for red, green, and blue sub-pixels, a single shared driving circuit is used to control all sub-pixels, thereby reducing the total circuit area while maintaining full-color display capability through sequential or simultaneous control of the light-emitting elements
Solution Approach 2:
The shared driving circuit is designed to perform multiple functions by sequentially controlling different sub-pixels. The same circuit infrastructure is used to drive red, green, and blue light-emitting elements, making the circuit universal and eliminating the need for dedicated circuits for each color channel
2Adaptability or versatility
If pixels are divided into sub-pixels for color display, then color display capability is improved, but aperture ratio decreases
Solution Approach 1:
By merging the driving circuits into a shared infrastructure, the patent reduces the non-light-emitting circuit area, thereby increasing the aperture ratio. The shared driving circuit occupies less space compared to multiple separate circuits, allowing a larger proportion of the pixel area to be dedicated to light-emitting elements
3Adaptability or versatility
If separate driving circuits are provided for each sub-pixel, then color display is achieved, but device complexity increases
Solution Approach 1:
The patent combines multiple separate driving circuits into a single shared driving circuit, thereby reducing device complexity. The shared circuit uses common transistors and control lines to manage multiple sub-pixels, eliminating redundant circuit elements and simplifying the overall pixel structure
Solution Approach 2:
The shared driving circuit is designed with universal control capabilities that can selectively activate different sub-pixels based on the required color output. This multi-functional approach allows the same circuit to serve multiple purposes, reducing the overall complexity compared to having dedicated circuits for each color channel
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
The sharing of current generating and light-emitting control circuits reduces circuit area, enhancing the aperture ratio and brightness of display panels while supporting full-color light display.
Implementation Method 1
The light-emitting element is for providing full-color light
Data Source
AI summary
A pixel circuit is disclosed. The pixel circuit includes a current generating circuit, one or more light-emitting elements, and a light-emitting control circuit. The current generating circuit receives pixel data to provide a driving current. The light-emitting element is used to provide full-color light. The light-emitting control circuit is coupled in series with the current generating circuit and the light-emitting element, and controls light-emitting brightness of the full-color light based on the driving current.