Display Panel Gate Voltage Testing for Stable Low-Power Imaging

Solution Overview

Problem

Conventional display devices suffer from unnecessary power consumption due to fixed driving voltages, and dynamic modulation of these voltages leads to inconsistent optical quality.

Innovation Solution

A method involving a control circuit that applies a series of gate testing voltages, including a maximum, operation, and failure testing voltage, with the maximum testing voltage appearing earlier than the failure testing voltage, to determine an optimal operation voltage, and uses lookup tables to maintain consistent gamma values during image display.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the driving voltage is fixed, then the optical quality is consistent, but the power consumption is unnecessary high

Engineering Contradiction:

Improveoptical quality consistencyVSAvoidpower consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The patent implements dynamic voltage modulation by dividing the driving voltage into multiple levels (first driving voltage and second driving voltage) and switching between them based on detection results. The control circuit dynamically adjusts the gate electrode voltage during different time periods (first time period and second time period), transforming the static fixed voltage system into a dynamic adjustable system that optimizes both power consumption and optical quality consistency.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent changes the voltage parameter from a single fixed value to multiple discrete levels. By implementing a voltage modulation scheme with at least two different driving voltages and selecting the appropriate voltage level based on detection feedback, the system optimizes the voltage parameter to reduce power consumption while maintaining consistent optical quality across different operating conditions.

Inventive Principle:

Principle #35Parameter changes

2Use of energy by moving object

If the driving voltage is dynamically modulated, then the power consumption is reduced, but the optical quality becomes inconsistent

Engineering Contradiction:

Improvepower consumptionVSAvoidoptical quality consistency

Core Design Contradiction:

Use of energy by moving objectVSReliability

Solution Approach 1:

The patent implements a feedback mechanism where the state detection unit detects the actual state of the display panel, and the control circuit uses this detection information to select appropriate driving voltages. The control circuit adjusts the gate electrode voltage based on the detection results, creating a closed-loop control system that ensures optical quality consistency is maintained even when dynamically modulating the driving voltage to reduce power consumption.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The patent implements dynamic voltage modulation by dividing the driving voltage into multiple levels (first driving voltage and second driving voltage) and switching between them based on detection results. The control circuit dynamically adjusts the gate electrode voltage during different time periods (first time period and second time period), transforming the static fixed voltage system into a dynamic adjustable system that optimizes both power consumption and optical quality consistency.

Inventive Principle:

Principle #15Dynamics

3Use of energy by moving object

If the detection period is extended to improve voltage optimization, then the power consumption reduction is enhanced, but the response time increases

Engineering Contradiction:

Improvepower consumption reductionVSAvoidresponse time

Core Design Contradiction:

Use of energy by moving objectVSLoss of time

Solution Approach 1:

The patent implements periodic voltage modulation by dividing the operation into distinct time periods (first time period and second time period) with different voltage levels. The detection and voltage adjustment occur periodically at specific intervals, allowing the system to optimize power consumption through extended detection while maintaining acceptable response times through structured periodic operation rather than continuous adjustment.

Inventive Principle:

Principle #19Periodic action

Data Source

PatentUS20250384799A1Method for display image and electronic device

Publication Date: 2025.12.18 INNOLUX CORP

AI summary

A method for displaying an image includes the following steps. A display panel and a control circuit are provided, wherein the control circuit is electrically connected to the display panel. During a detection period, the control circuit provides a plurality of gate testing voltages to the display panel, wherein the plurality of gate testing voltages include a maximum testing voltage, an operation voltage and a failure testing voltage, the maximum testing voltage is higher than the operation voltage, the operation voltage is higher than the failure testing voltage, and the time point at which the maximum testing voltage appears is earlier than the time point at which the failure testing voltage appears. During a working period, the control circuit outputs at least one image signal to the display panel according to the operation voltage.