Electro-Optical Apparatus Brightness and Luminance Balance Control
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Solution Overview
Problem
Existing electro-optical apparatuses for head-mounted displays and other applications struggle to independently adjust overall brightness and luminance balance between multiple display portions, leading to imbalances and discomfort when luminance differences are perceived between eyes or display areas.
Innovation Solution
The apparatus features a control method that adjusts the number of current pulses and pulse width for light-emitting elements across multiple display portions, allowing for simultaneous brightness adjustment and independent luminance balance control by synchronizing or varying these parameters across different display areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If luminance of each display portion is adjusted to change overall brightness, then overall brightness is improved, but luminance balance between display portions deteriorates
Solution Approach 1:
The patent segments the control of luminance into two independent dimensions: overall brightness control and luminance balance control. By separating these control functions, the system can adjust overall brightness without affecting the relative luminance balance between display portions, thus resolving the contradiction between improving overall brightness and maintaining luminance balance.
Solution Approach 2:
The patent changes the control parameters from direct luminance adjustment to dual-parameter control (overall brightness parameter and luminance balance parameter). This allows independent adjustment of overall brightness while preserving the luminance balance relationship between different display portions, effectively resolving the technical contradiction.
2Stability of the object's composition
If luminance balance is adjusted by operating dimming operation means of each display portion, then luminance balance is improved, but overall brightness control capability deteriorates
Solution Approach 1:
The patent segments the control functions into distinct operations: one for adjusting luminance balance and another for adjusting overall brightness. This segmentation allows the system to perform both functions independently, resolving the contradiction between improving luminance balance and maintaining overall brightness control capability.
Solution Approach 2:
The patent creates a universal control system that can perform multiple functions: adjusting luminance balance between display portions and adjusting overall brightness. This multi-functional control mechanism resolves the contradiction by enabling both control capabilities to coexist without interfering with each other.
3Measurement precision
If multiple control operations are performed to adjust both overall brightness and luminance balance, then control precision is improved, but device complexity deteriorates
Solution Approach 1:
The patent merges the control of overall brightness and luminance balance into a unified control system with coordinated operation. By combining these control functions into a single integrated system rather than separate independent systems, the patent achieves high control precision while avoiding the complexity that would result from multiple separate control mechanisms.
Solution Approach 2:
The patent implements a universal control system that handles both overall brightness adjustment and luminance balance adjustment through coordinated operations. This multi-functional control approach achieves precise control for both parameters without requiring separate complex control systems, thus resolving the contradiction between control precision and device 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 approach enables precise control over overall brightness and luminance balance between display portions, reducing load on the circuit and improving user experience by minimizing luminance differences, thus enhancing visual comfort and display quality.
Implementation Method 1
each of the plurality of pixels has a light-emitting element that emits light using current that is input at a predetermined cycle from a power supply line
Data Source
AI summary
An electro-optical apparatus includes a plurality of display portions and a control portion. The respective display portions have a plurality of pixels. Each of the plurality of pixels has a light-emitting element that emits light using current that is input at a predetermined cycle from a power supply line in a period from selecting a scanning line until selecting the subsequent scanning line. The control portion controls the display portions such that one of an input number of times of current from the power supply line to the light-emitting element in the period and an input time of current from the power supply line to the light-emitting element in each of the predetermined cycles changes in conjunction with each other in the display portions that are different from each other and the other changes independently from each other in the display portions that are different from each other.