Fish-like Electrode Asymmetry for VR Display Transmittance

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Solution Overview

Problem

The transmittance of comb electrodes in virtual reality display devices is relatively low, which affects the performance of the display panel.

Innovation Solution

The design of a fish-like electrode with specific waist structures and inclination angles, reducing inactive electric field components and electric field disorder areas, thereby improving transmittance while maintaining response time.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Speed

If comb-shaped electrodes are used in VR display devices, then response time is improved, but transmittance deteriorates

Engineering Contradiction:
Improveresponse timeVSAvoidtransmittance
Core Design Contradiction:
SpeedVSIllumination intensity

Solution Approach 1:

The patent applies asymmetry by designing the electrode with a fish-like shape featuring a waist portion that is narrower than the head and tail portions. This asymmetric geometry optimizes the electric field distribution to improve response time while the reduced electrode width at the waist portion increases light transmittance compared to traditional symmetric comb-shaped electrodes

Inventive Principle:
Principle #4Asymmetry

Solution Approach 2:

The patent changes the geometric parameters of the electrode by introducing a waist portion with specific width constraints (where the width at the waist is smaller than at the head and tail). This parameter modification allows the electrode to achieve both fast response time and high transmittance by optimizing the balance between electrode area and light passage

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentUS12197088B2Array substrate, liquid crystal display panel, and display device having trapezoidal shaped electrode
Publication Date: 2025.01.14 WUHAN CHINA STAR OPTOELECTRONICS TECH CO LTD
  • US12197088B2 patent drawing
  • US12197088B2 patent drawing
  • US12197088B2 patent drawing

AI summary

An array substrate includes a first electrode. The first electrode includes first, second, third and fourth side walls and first and second bottom walls. Ends of the third and fourth side walls are connected by the second bottom wall. A shortest distance d1 is from the first bottom wall to the second bottom wall. A distance d2 is from an end of the first side wall away from the second side wall to an end of the third side wall away from the fourth side wall. A distance d3 is from an end of the second side wall away from the first side wall to an end of the fourth side wall away from the third side wall, and d1<d2, d1<d3.