Display Panel Subpixel Light Emission Control Circuit
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Solution Overview
Problem
Existing self-emissive display devices face challenges in controlling light emitting elements to emit light at the same period, leading to issues with image quality and power consumption.
Innovation Solution
Incorporating a light emitting control circuit within the display panel to control the light emitting time for each subpixel, allowing for independent light emission timing and improved grayscale representation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If light emitting elements are controlled to emit light at the same light emitting period, then the control is simplified, but image quality deteriorates and power consumption increases
Solution Approach 1:
The patent divides the display into multiple subpixels (first subpixel, second subpixel, third subpixel) with different light emitting periods. Each subpixel is controlled independently by separate control circuits, allowing sequential light emission at different time intervals. This segmentation resolves the contradiction by maintaining simple control mechanisms while achieving differentiated emission timing for improved image quality and reduced power consumption.
Solution Approach 2:
The patent implements dynamic control of light emitting periods for different subpixels. The control circuits adjust the light emitting period of each subpixel independently, creating a dynamic emission pattern where subpixels emit light at different times. This dynamic approach allows the system to optimize between control simplicity and image quality by varying emission timing based on pixel characteristics.
2Ease of operation
If light emitting elements are controlled to emit light at the same light emitting period, then the control is simplified, but power consumption increases
Solution Approach 1:
The patent segments the light emitting operation across multiple subpixels with different emission periods. By controlling first, second, and third subpixels to emit at different times, the system reduces overall power consumption while maintaining simple control architecture. The segmentation allows energy-efficient operation through temporal distribution of light emission.
Solution Approach 2:
The patent employs periodic light emission with different periods for different subpixels. Each subpixel emits light periodically but with different time intervals between emissions. This periodic action with varied periods enables power reduction by preventing continuous or simultaneous emission, while keeping the control mechanism relatively simple through repetitive timing patterns.
3Manufacturing precision
If the display panel includes independent light emitting control circuit for each subpixel, then low-grayscale representation is improved, but device complexity increases
Solution Approach 1:
The patent introduces separate light emitting control circuits for different subpixels to achieve precise control of light emission timing. This segmentation enables improved low-grayscale representation by independently managing the emission characteristics of each subpixel group. The additional control circuits provide the necessary precision for accurate grayscale control.
Solution Approach 2:
The patent applies different control strategies to different subpixels based on their specific characteristics. Each subpixel group receives customized control signals tailored to its light emitting properties, enabling precise low-grayscale representation. This local quality approach allows the system to optimize performance for each region while managing overall complexity.
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 solution enables improved low-grayscale representation, high resolution, and reduced power consumption by allowing each subpixel to control its light emitting time independently.
Implementation Method 1
a first light emitting control transistor configured to be turned on or off according to a first light emitting control signal supplied to its gate node and control a connection between the first light emitting element and the first driving circuit
Implementation Method 2
a first light emitting element including an anode electrode and a cathode electrode
Implementation Method 3
a self-emissive display, in which a display panel itself emits light by light emitting elements disposed in the display panel
Data Source
AI summary
The present disclosure relates to a display device including scan lines, data lines, control signal lines, and subpixels. A first subpixel among the subpixels includes a first light emitting element including an anode electrode and a cathode electrode; a first driving circuit connected to a first scan line of the plurality of scan lines and a first data line of the plurality of data lines and configured to drive the first light emitting element; a first light emitting control transistor configured to be turned on or off according to a first light emitting control signal supplied to its gate node and control a connection between the first light emitting element and the first driving circuit; and a first light emitting control circuit configured to output a first light emitting control signal to the gate node of the first light emitting control transistor.