Display Panel Temperature Compensation Feedback Control
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Solution Overview
Problem
Existing display panels face challenges in normal startup and image display at varying ambient temperatures due to deviations in temperature-compensation curves, leading to abnormal display images and potential burnout of routing.
Innovation Solution
A display panel design incorporating a circuit board, a first temperature sensor, a control chip, a driver chip, and a second temperature sensor, where the first temperature sensor detects ambient temperature changes and the control chip adjusts the driving voltage based on a preset temperature-compensation curve, and the second temperature sensor corrects the curve by comparing circuit board temperature with a preset value.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a preset temperature-compensation curve is used for driving voltage adjustment, then the display panel can operate at different ambient temperatures, but deviations in the temperature-compensation curve cause abnormal display images and potential burnout
Solution Approach 1:
The patent implements a feedback mechanism by introducing a second temperature sensor that detects the actual temperature of the circuit board and feeds this information back to the control chip. The control chip compares the detected temperature with the preset temperature-compensation curve and dynamically adjusts the driving voltage accordingly, ensuring accurate temperature compensation and preventing display abnormalities
Solution Approach 2:
The patent changes the parameter of temperature-compensation curve from a fixed preset value to a dynamically adjustable parameter. The control chip modifies the driving voltage parameters based on real-time temperature feedback from the second temperature sensor, allowing the system to adapt to actual temperature conditions and eliminate deviations in the temperature-compensation curve
2Device complexity
If the first temperature sensor is placed close to the circuit board for compact design, then device complexity is reduced, but temperature detection accuracy is affected by heat from the circuit board
Solution Approach 1:
The patent introduces a heat insulation layer as an intermediary between the first temperature sensor and the circuit board. This heat insulation layer blocks thermal conduction from the circuit board to the temperature sensor, allowing the sensor to accurately detect ambient temperature without being influenced by the heat generated by the circuit board, thus maintaining measurement precision while keeping the device compact
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 ensures accurate temperature compensation for driving voltages at different ambient temperatures, preventing abnormal startup and image display issues, reducing the risk of burnout, and extending the service life of the display panel.
Implementation Method 1
a first temperature sensor, spaced apart from the circuit board, is configured to detect an ambient temperature change and obtain first temperature information
Implementation Method 2
a second temperature sensor is configured to detect a temperature change of the circuit board and obtain second temperature information
Implementation Method 3
When the second temperature information deviates from the first preset temperature, the control chip is configured to correct the preset temperature-compensation-curve and obtain a first corrected temperature-compensation-curve
Data Source
AI summary
A display panel and a display device are provided. The display panel includes a circuit board, a first temperature sensor, a control chip, a driver chip, and a second temperature sensor. The first temperature sensor is spade from the circuit board. The first temperature sensor is configured to obtain first temperature information. The control chip is configured to receive the first temperature information, and output a control signal according to the first temperature information and a preset temperature-compensation-curve. The driver chip is configured to output a driving voltage under the control of the control signal. The second temperature sensor is configured to obtain second temperature information. The control chip is configured to compare the second temperature information with a first preset temperature. When the second temperature information deviates from the first preset temperature, the control chip is configured to correct the preset temperature-compensation-curve and obtain a first corrected temperature-compensation-curve.