Flexible Display Bonding Detection via ADC Voltage Sensing
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Solution Overview
Problem
Flexible display devices face issues with deteriorating bonding conditions between components due to repeated bending, leading to impaired image quality and reduced lifespan, necessitating accurate detection and dynamic adjustment of bending characteristics.
Innovation Solution
A display device with a sensing mechanism to detect bonding conditions between components, using an analog-to-digital converter to measure voltage changes, and a compensation circuit to adjust bending characteristics based on detected bonding states.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the flexible display is repeatedly bent and unbent, then the shape change capability is improved, but the bonding conditions between internal components deteriorate
Solution Approach 1:
The patent applies preliminary action by detecting bonding status before complete failure occurs. The bonding status detection unit continuously monitors the bonding conditions between internal components, and the control unit adjusts bending characteristics in advance based on detected changes, preventing complete bonding failure and extending device lifespan.
Solution Approach 2:
The patent implements feedback through a closed-loop system where the bonding status detection unit continuously monitors bonding conditions, provides feedback to the control unit, which then adjusts bending characteristics accordingly. This feedback mechanism enables dynamic adaptation to deteriorating bonding conditions, maintaining reliability while allowing repeated shape changes.
2Duration of action of stationary object
If bonding conditions deteriorate due to repeated bending, then the lifespan is reduced, but detecting and identifying impaired bonding requires additional sensing mechanisms
Solution Approach 1:
The patent applies universality by designing a bonding status detection unit that serves multiple functions: it detects bonding conditions, identifies impairment locations, and provides data for controlling bending characteristics. This multi-functional approach extends lifespan while minimizing the addition of separate sensing mechanisms.
Solution Approach 2:
The patent implements self-service by enabling the display device to self-diagnose bonding status and self-adjust bending characteristics without external intervention. The integrated sensing and control system allows the device to monitor its own health and adapt to changing conditions autonomously, extending lifespan without requiring complex external monitoring systems.
3Reliability
If bonding status is continuously monitored, then the reliability is improved, but the device complexity increases
Solution Approach 1:
The patent applies merging by integrating the bonding status detection unit with existing internal components of the display device. Rather than adding separate external monitoring systems, the detection functionality is combined with existing structural and electrical components, reducing overall device complexity while maintaining continuous bonding monitoring capability.
Solution Approach 2:
The patent implements self-service by enabling the display device to self-diagnose bonding status and self-adjust bending characteristics without external intervention. The integrated sensing and control system allows the device to monitor its own health and adapt to changing conditions autonomously, extending lifespan without requiring complex external monitoring systems.
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
Enhances durability and extends the lifespan of flexible display devices by accurately detecting and adapting to bonding conditions, maintaining image quality during shape changes.
Implementation Method 1
using an analog-to-digital converter to measure voltage changes
Data Source
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AI summary
A display device (100, 200) can include a display panel (110) including a display area (AA) in which sub-pixels (SP) are disposed, and a non-display area (NA) adjacent to the display area (AA) and in which a second pad portion (620) is disposed, a printed circuit board (PCB, SPCB) including a first pad portion (610) for outputting voltages to the display panel (110), and a circuit film (CF) including a first end connected to the first pad portion (610) of the printed circuit board (PCB, SPCB) and a second end connected to the second pad portion (620) of the display panel (110). The display device (100, 200) can further include an analog-to-digital converter (ADC) to receive an output voltage (Vout) output from the first pad portion (610) or the second pad portion (620) through a line in the circuit film (CF) electrically connecting the first pad portion (610) with the second pad portion (620), and output a value (CSS) corresponding to the output voltage for detecting a bonding state of at least one internal component within the display device (100, 200).