AMOLED Panel Temperature Compensation Module
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Solution Overview
Problem
AMOLED display panels experience color-bias due to temperature variations, affecting display quality as the luminescence brightness of OLEDs changes with temperature, unlike TFT-LCDs which use stable voltage for brightness control.
Innovation Solution
An organic light-emitting display panel with a temperature detection and compensation module that detects temperature and applies a temperature compensation voltage to the anodes of light-emitting elements when the temperature is outside a set range, ensuring consistent brightness and reducing color-bias.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If temperature detection and compensation module is added to AMOLED display panel, then display quality and brightness consistency are improved, but device complexity increases
Solution Approach 1:
The patent applies preliminary action by detecting temperature during a pre-set detection period before the actual display operation, and pre-calculating the temperature compensation voltage in advance. This allows the compensation to be ready before temperature variations significantly affect display quality, resolving the contradiction by proactively addressing temperature issues rather than reactively correcting them.
Solution Approach 2:
The patent changes the voltage parameter by applying a temperature compensation voltage to the anode of the light-emitting element based on detected temperature variations. This parameter change compensates for temperature-induced luminescence changes, improving display quality while managing the added complexity through systematic parameter adjustment.
2Illumination intensity
If temperature compensation voltage is applied to light-emitting elements, then brightness consistency is improved, but energy consumption increases
Solution Approach 1:
The patent applies partial action by only implementing temperature compensation when temperature variations actually affect display quality, rather than continuously applying compensation voltage. The system detects temperature during specific detection periods and applies compensation selectively, reducing unnecessary energy consumption while maintaining brightness consistency when needed.
Solution Approach 2:
The patent implements periodic action by conducting temperature detection during pre-set detection periods and applying compensation voltages in a periodic manner rather than continuously. This periodic approach maintains display quality while significantly reducing energy consumption compared to continuous compensation.
3Object-affected harmful factors
If temperature detection is performed during pre-set detection period, then color-bias elimination is improved, but response time increases
Solution Approach 1:
The patent applies preliminary action by performing temperature detection during pre-set detection periods before the actual display operation begins. This advance detection allows the system to prepare compensation strategies in advance, eliminating color-bias without delaying the actual display response when needed.
Solution Approach 2:
The patent implements feedback by using the temperature detection results to dynamically adjust and apply temperature compensation voltage to the light-emitting element. This closed-loop feedback mechanism ensures color-bias is eliminated based on actual temperature conditions while maintaining fast response through efficient feedback processing.
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 solution effectively eliminates color-bias caused by temperature variations, improving the display quality of AMOLED panels by maintaining consistent brightness across temperature changes.
Implementation Method 1
the voltage storage sub-module is further connected to a ground end, and is configured to be charged or discharged under a control of the ground end and the temperature detection signal as received
Implementation Method 2
AMOLED (Active Matrix Organic Light-emitting Diode) display panels have entered the market
Data Source
AI summary
Disclosed are an organic light-emitting display panel and a display method thereof. The temperature of the organic light-emitting display panel can be detected in a pre-set detection period by arranging a temperature detection and compensation module, when it is determined that the temperature of the organic light-emitting display panel is not within a pre-set temperature range, a temperature compensation voltage corresponding to the organic light-emitting display panel is determined according to the detected temperature of the organic light-emitting display panel; and when each light-emitting device emits light, the determined temperature compensation voltage is applied to an anode of the light-emitting device that emits light so as to carry out voltage compensation on an anode voltage of the light-emitting device.