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Conducting film or electrode with improved optical and electrical performance for display and lighting devices and solar cells

A solar cell and display device technology, applied in optics, nonlinear optics, instruments, etc., can solve problems such as device failure, poor performance, and loss of TCO conductivity

Inactive Publication Date: 2012-07-11
3M INNOVATIVE PROPERTIES CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Reflection loss in other types of reflective and emissive displays can also be detrimental to their performance
Additionally, for flexible displays and solid-state lighting devices, the brittleness of standard TCOs such as indium tin oxide (ITO) can lead to premature device failure due to TCO cracking and loss of conductivity

Method used

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  • Conducting film or electrode with improved optical and electrical performance for display and lighting devices and solar cells
  • Conducting film or electrode with improved optical and electrical performance for display and lighting devices and solar cells
  • Conducting film or electrode with improved optical and electrical performance for display and lighting devices and solar cells

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0046] made Figure 4 A substrate with a three-layer electrode design is shown in . The middle layer consisted of an acrylate polymer deposited using the superbarrier process noted above, and the two conductive layers consisted of sputter-deposited ITO. As indicated in Table 2, three-layer electrodes with different interlayer and ITO layer thicknesses were fabricated on a roll of 0.005 inch thick PET.

[0047]

[0048] The individual layer thicknesses were determined by the film speed in feet per minute (fpm) across the ITO and super barrier film deposition sources. Faster speeds form thinner layers. The sheet resistance of these samples was measured using a non-contact probe (Delcom) measuring the combined conductivity of the two ITO layers and a surface contact 4-probe instrument measuring the conductivity of the top exposed surface. Both measurement techniques yielded the same sheet resistance values ​​within the measurement error, indicating that the interlayer allow...

example 2

[0054] An ITO / polymer / ITO multilayer stack was fabricated on a PET film using the same procedure used in Example 1 . Laser ablation techniques are used to create defined electrodes for OLEDs. Prior to OLED fabrication, PET films with ITO / polymer / ITO multilayer stacks were prebaked at 80° C. overnight in a nitrogen atmosphere to remove moisture from the films. Immediately before OLED fabrication, the film was subjected to a standard oxygen plasma treatment to remove organic residues from the ITO surface and tune the ITO surface properties for optimal OLED performance. At base pressure about 10 -6 OLEDs were fabricated by standard thermal deposition in a Torr vacuum system. The following OLED configurations were deposited: HIL (300 nm) / HTL (40 nm) / EML (30 nm, 6% dopant) / ETL (20 nm) / LiF (1 nm) / Al (200 nm).

[0055] After completion, encapsulate the OLED with 3M encapsulation barrier film, and use SAES getter as desiccant and oxygen scavenger between the encapsulation film and ...

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Abstract

A conducting film or device multilayer electrode includes a substrate and two transparent or semitransparent conductive layers separated by a transparent or semitransparent intervening layer. The intervening layer includes electrically conductive pathways between the first and second conductive layers to help reduce interfacial reflections occurring between particular layers in devices incorporating the conducting film or electrode.

Description

Background technique [0001] Cholesteric liquid crystal (ChLC) materials consist of nematic liquid crystals and chiral additives mixed together for the spontaneous formation of helical structures with well-defined pitches. This pitch determines the wavelength of light reflected by the material and thus the color of the material. The color can also be adjusted by changing the ratio of nematic liquid crystal and chiral components. By applying a suitable drive scheme, a pixel in a ChLC display can be switched between its planar reflective (colored) state and its translucent focal conic state. [0002] figure 1 A monochrome ChLC display 10 is shown comprising a stack having the following layers in the configuration shown: substrate 12; electrode 14; ChLC material 16; electrode 18; substrate 20; The reflection 26 from the ChLC material 16 produces the displayed color. Full-color ChLC displays can be constructed by stacking an array of RGB panels, where individual RGB subpixels o...

Claims

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Application Information

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IPC IPC(8): G02F1/1343
CPCH01L51/5215G02F1/13439H01L51/442G02F2201/42H01L31/022466H01L31/022475Y02E10/549H10K30/82H10K59/80517H01L31/04H10K50/13H10K50/11H10K50/816G02F1/133305G02F1/133345G02F1/1334G02F2203/01
Inventor 弗雷德·B·麦考密克谢尔盖·A·拉曼斯基莱斯莉·A·克莱利奇马诺耶·尼马尔
Owner 3M INNOVATIVE PROPERTIES CO
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