Liquid Crystal Panel Layout for High-Transmittance Dual-Mode Displays
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Solution Overview
Problem
Existing layered display devices face challenges in achieving high transmittance and reducing power consumption, particularly when using liquid crystal panels on the viewer's side, as they often require high alignment accuracy and separate areas for reflective and self-luminous displays, leading to insufficient luminance and increased frame regions.
Innovation Solution
The liquid crystal panel design includes transparent conductive materials for pixel electrodes and signal wiring, pixel electrodes connected in sets, and pixel drive circuits located in the frame region, allowing for higher transmittance and flexible display modes without separate reflective and self-luminous areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If separate areas for reflective and self-luminous displays are provided, then display functionality is improved, but frame region area increases and transmittance decreases
Solution Approach 1:
The liquid crystal panel is designed to support both reflective and self-luminous display modes using the same active region, eliminating the need for separate display areas. The panel achieves this through transparent conductive materials and strategic placement of pixel drive circuits in the frame region, allowing one panel to fulfill multiple display functions without increasing frame region area.
Solution Approach 2:
The patent combines reflective and self-luminous display capabilities into a single unified display area. By integrating pixel drive circuits in the frame region and using transparent conductive materials throughout the active region, the panel merges previously separate functional areas into one cohesive structure, improving transmittance while maintaining versatility.
2Manufacturing precision
If pixel drive circuits are integrated in each pixel, then display control precision is improved, but frame region area increases
Solution Approach 1:
The pixel drive circuits are extracted from the pixel regions and relocated to the frame region. This separation allows each pixel to be controlled with high precision through dedicated circuits while keeping the frame region area minimized. The transparent conductive materials enable efficient signal transmission from the frame region to individual pixels.
Solution Approach 2:
The patent relocates pixel drive circuits from the two-dimensional pixel grid to the peripheral frame region, effectively using the frame area for circuit placement. This dimensional reorganization allows precise pixel control without increasing the active display area or compromising transmittance.
3Illumination intensity
If transparent conductive materials are used for pixel electrodes and signal wiring, then transmittance is improved, but manufacturing complexity increases
Solution Approach 1:
The patent employs transparent conductive materials such as ITO (indium tin oxide) or IZO (indium zinc oxide) with optimized thickness and conductivity parameters. By carefully controlling the material composition and film thickness, the patent achieves high transmittance while maintaining manufacturability through established sputtering or chemical vapor deposition processes.
Solution Approach 2:
The patent uses composite structures combining transparent conductive materials with insulating layers and conductive paste in specific configurations. These composite material systems balance optical transparency with electrical conductivity requirements, enabling high transmittance while remaining compatible with standard display manufacturing processes.
Data Source
AI summary
A liquid crystal panel includes a first substrate, a second substrate, and a liquid crystal layer, and includes an active region and a frame region. The first substrate includes multiple pixel electrodes and multiple signal wiring lines. The liquid crystal panel further includes multiple pixel drive circuits located outside the active region. The pixel electrodes and portions of the signal wiring lines located in the active region are made of a transparent conductive material. The active region includes a display region defined by at least some of the multiple pixels. The pixel electrodes located in the display region include at least one pixel electrode set including two or more pixel electrodes electrically connected to each other.