Stereopsis Display Pixel Circuit Initialization for Low-Frequency Driving
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Solution Overview
Problem
Conventional stereoscopic display devices face challenges in achieving low-frequency driving while maintaining high luminance and reducing power consumption, particularly due to the insertion of black images which increase power consumption and decrease luminance.
Innovation Solution
The proposed solution involves a stereopsis display device with a pixel circuit that includes organic light emitting diodes (OLEDs), transistors, and capacitors, where the pixels are initialized with specific voltages to manage data voltage storage and emission, allowing simultaneous light emission without black image insertion, thus reducing driving frequency and power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If black images are inserted in conventional stereoscopic display devices, then the stereoscopic image can be displayed, but power consumption increases and luminance decreases
Solution Approach 1:
The patent applies preliminary action by initializing the pixel circuit with specific voltages before data voltage storage. The pixel circuit is prepared in advance with initialization voltages applied to the initialization electrode, enabling the circuit to be ready for low-frequency driving without requiring black image insertion. This preliminary preparation allows the display to switch between left-eye and right-eye image periods efficiently.
Solution Approach 2:
The patent changes the electrical parameters of the pixel circuit by applying different initialization voltages to different electrodes (emission electrode and initialization electrode). By controlling the voltage levels and timing of these initialization voltages, the patent enables the pixel circuit to maintain proper state during low-frequency driving, eliminating the need for black images while maintaining stereoscopic display functionality.
2Reliability
If black images are inserted in conventional stereoscopic display devices, then the stereoscopic image can be displayed, but luminance is decreased
Solution Approach 1:
The patent applies preliminary action by initializing the pixel circuit with specific voltages before data voltage storage. The pixel circuit is prepared in advance with initialization voltages applied to the initialization electrode, enabling the circuit to be ready for low-frequency driving without requiring black image insertion. This preliminary preparation allows the display to switch between left-eye and right-eye image periods efficiently.
Solution Approach 2:
The patent changes the electrical parameters of the pixel circuit by applying different initialization voltages to different electrodes (emission electrode and initialization electrode). By controlling the voltage levels and timing of these initialization voltages, the patent enables the pixel circuit to maintain proper state during low-frequency driving, eliminating the need for black images while maintaining stereoscopic display functionality.
3Use of energy by moving object
If driving frequency is reduced in stereoscopic display devices, then power consumption is reduced, but image quality may be compromised
Solution Approach 1:
The patent applies preliminary action by initializing the pixel circuit with specific voltages before data voltage storage. The pixel circuit is prepared in advance with initialization voltages applied to the initialization electrode, enabling the circuit to be ready for low-frequency driving without requiring black image insertion. This preliminary preparation allows the display to switch between left-eye and right-eye image periods efficiently.
Solution Approach 2:
The patent implements periodic action by alternating between left-eye image periods and right-eye image periods. The display device operates at a low driving frequency, sequentially displaying images for the left eye and right eye in periodic intervals. This periodic switching is enabled by the initialization voltage mechanism, maintaining image quality while reducing power consumption compared to continuous high-frequency operation.
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 enables the display of clear and stable stereoscopic images with reduced luminance loss and lower power consumption, effectively addressing the limitations of conventional methods by allowing low-frequency driving without compromising image quality.
Implementation Method 1
the organic light emitting diode (OLED), which displays images by using an organic light emitting diode (OLED) that generates light by recombining electrons and holes
Implementation Method 2
Each pixel of the plurality of pixels may include a first capacitor, maintaining the data voltage corresponding to the image data signal of the viewpoint, opposite to the viewpoint of each period
Implementation Method 3
Each pixel of the plurality of pixels may include a first transistor connected to the switching transistor, and transmitting the data voltage to a first node
Data Source
AI summary
The stereopsis display device comprises: a scan driver, transmitting a plurality of scan signals to a plurality of scan lines; a gate driver, transmitting a plurality of gate signals to a plurality of gate lines; a data driver, transmitting a plurality of data signals to a plurality of data lines; a controller controlling the scan driver, the gate driver, and the data driver, generating image data signals corresponding to a left-eye image period and a right-eye image period respectively, during one frame, and supplying them to the data driver; and a display unit, including a plurality of pixels, connected to a corresponding scan line, among the plurality of scan lines, the plurality of gate lines, and a corresponding data line, among the plurality of data lines.