Reflective Display Panel Adaptive Brightness Control

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Solution Overview

Problem

Existing information processing devices face challenges in providing clear visibility and reliability, especially when used in environments with strong external light, as they often struggle to maintain image brightness and reduce power consumption simultaneously.

Innovation Solution

The development of an information processing device incorporating a display panel with a reflective liquid crystal element and a light-emitting diode, where the reflective film adjusts incident light intensity and the light-emitting diode emits light to a region overlapping with an opening in the reflective film, allowing for both reflective and self-luminous display modes.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Illumination intensity

If a light-emitting display mode is used to provide high brightness, then visibility in bright environments is improved, but power consumption increases

Engineering Contradiction:
Improvedisplay brightnessVSAvoidpower consumption
Core Design Contradiction:
Illumination intensityVSUse of energy by moving object

Solution Approach 1:

The display device dynamically switches between light-emitting mode and reflective mode based on ambient light conditions. The controller adjusts the operating mode of the display element to optimize both visibility and power consumption, making the system adaptive rather than static

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The invention changes the operational parameters of the display element by switching between different modes (light-emitting vs. reflective). This parameter change allows the same hardware to achieve different performance characteristics suitable for different environmental conditions

Inventive Principle:
Principle #35Parameter changes

2Use of energy by moving object

If a reflective display mode is used to reduce power consumption, then energy efficiency is improved, but visibility in bright environments deteriorates

Engineering Contradiction:
Improvepower consumptionVSAvoiddisplay brightness
Core Design Contradiction:
Use of energy by moving objectVSIllumination intensity

Solution Approach 1:

The display element is designed to perform multiple functions: it can operate in both light-emitting mode and reflective mode. This multi-functionality allows the same component to adapt to different environmental requirements without needing separate hardware for each mode

Inventive Principle:
Principle #6Universality (Multi-functionality)

3Illumination intensity

If the light-condensing means condenses light in the longitudinal direction, then luminance is improved, but the display area is reduced

Engineering Contradiction:
ImproveluminanceVSAvoiddisplay area
Core Design Contradiction:
Illumination intensityVSArea of stationary object

Solution Approach 1:

The light-condensing means redirects light from the longitudinal direction to the lateral direction, changing the dimension of light condensation. This allows high luminance to be achieved without reducing the display area in the lateral direction

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

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 enables a display panel that can operate efficiently in bright environments with low power consumption, providing excellent visibility and reliability by adjusting light intensity and emission based on ambient conditions.

Implementation Method 1

the reflective film adjusts incident light intensity

Methodology Applied
Scientific EffectLight reflection: Reflection

Implementation Method 2

the reflective film adjusts incident light intensity

Methodology Applied
Scientific EffectLight absorption: Absorption (EM radiation)

Implementation Method 3

the light-emitting diode emits light to a region overlapping with an opening in the reflective film

Methodology Applied
Scientific EffectLight-emitting diode emission: Light Emitting Diode

Data Source

PatentUS11348537B2Information processing device
Publication Date: 2022.05.31 SEMICON ENERGY LAB CO LTD
  • US11348537B2 patent drawing
  • US11348537B2 patent drawing
  • US11348537B2 patent drawing

AI summary

A novel information processing device that is highly convenient or reliable is provided. The inventor has thought of a structure including an input portion configured to supply the positional information of a pointer, an arithmetic device configured to determine a first region based on the positional information of a pointer and generate the image information so that the luminance of an image displayed in the first region is increased, and a display portion for displaying the image information.