Liquid Crystal Panel Incident Light Control Area Voltage Timing

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Solution Overview

Problem

Electronic devices with integrated liquid crystal panels and cameras face challenges in capturing clear images due to the overlap of the camera with the incident light control area, where the voltage application times for control electrodes and pixel electrodes are not optimized, affecting light transmittance and response speed.

Innovation Solution

The electronic device incorporates a liquid crystal panel with a display area and an incident light control area, featuring an annular light-shielding portion and control electrodes connected to an annular line, where the voltage application time for the control electrodes is shorter than for the pixel electrodes, allowing for controlled light transmittance and improved image capture.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the camera overlaps the incident light control area of the liquid crystal panel, then the camera can be integrated with the display surface, but the image capture quality deteriorates due to insufficient optimization of voltage application times

Engineering Contradiction:

Improveintegration of camera and displayVSAvoidimage capture quality

Core Design Contradiction:

Adaptability or versatilityVSManufacturing precision

Solution Approach 1:

The liquid crystal panel is divided into two distinct areas: a display area with pixel electrodes and an incident light control area with control electrodes. This segmentation allows independent optimization of voltage application times for each area, enabling the camera to capture clear images while the display functions normally.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent implements dynamic control of voltage application times, where the control electrodes in the incident light control area receive voltage for a shorter duration than the pixel electrodes in the display area. This dynamic timing adjustment optimizes light transmittance for camera capture while maintaining display performance.

Inventive Principle:

Principle #15Dynamics

2Illumination intensity

If the voltage application time for control electrodes is extended to improve light transmittance, then more light reaches the camera, but the response speed of the liquid crystal panel deteriorates

Engineering Contradiction:

Improvelight transmittanceVSAvoidresponse speed

Core Design Contradiction:

Illumination intensityVSSpeed

Solution Approach 1:

Different voltage application times are applied to different regions: the control electrodes in the incident light control area use a shorter voltage application time optimized for response speed, while pixel electrodes in the display area use a longer voltage application time optimized for light transmittance. This local differentiation resolves the contradiction between light transmittance and response speed.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The patent changes the voltage application time parameter specifically for the control electrodes in the incident light control area, setting it shorter than that of pixel electrodes. This parameter adjustment optimizes the balance between light transmittance and response speed for camera integration.

Inventive Principle:

Principle #35Parameter changes

3Speed

If the voltage application time for control electrodes is shortened to improve response speed, then the liquid crystal panel responds faster, but light transmittance to the camera is reduced

Engineering Contradiction:

Improveresponse speedVSAvoidlight transmittance

Core Design Contradiction:

SpeedVSIllumination intensity

Solution Approach 1:

The patent applies different voltage application times to different electrode types: control electrodes receive shorter voltage pulses for fast response, while pixel electrodes receive longer voltage pulses for adequate light transmittance. This local quality differentiation ensures both response speed and light transmittance are optimized for their respective functions.

Inventive Principle:

Principle #3Local quality

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 configuration enhances the ability to capture clear images by optimizing light transmittance and response speed, improving the camera's performance in electronic devices with integrated liquid crystal panels.

Implementation Method 1

The incident light control area includes an annular line, and a control electrode formed inside the annular line to be connected to the annular line. A time in which a voltage is applied to the control electrode is shorter than a time in which a voltage is applied to the pixel electrode.

Methodology Applied

Scientific EffectElectro-optic effect: Electro-Optic Effects

Data Source

PatentUS11815774B2Electronic device

Publication Date: 2023.11.14 MAGNOLIA WHITE CORP

AI summary

According to one embodiment, an electronic device includes a liquid crystal panel and a camera. The liquid crystal panel includes a display area and an incident light control area. The display area includes a pixel electrode. The camera overlaps the incident light control area. The incident light control area includes an annular line, and a control electrode formed inside the annular line to be connected to the annular line. A time to apply a voltage to the control electrode is shorter than a time to apply a voltage to the pixel electrode.