Introduction of WGF TM Wire grid polarizer film

Transcription

1 April 2017 Introduction of WGF TM Wire grid polarizer film Asahi Kasei Corporation Electronics & Functional Products Division WGF Project 1

2 WGF TM - Outline - What is WGF TM? "WGF TM " is the world's first wire grid polarizer based plastic films. It has a high polarization separation performance in the broad wavelength range by using metal nano-size wires. Furthermore, it has excellent heat resistance compared to a typical absorption polarizer. Asahi s Original Technology Continuous roll to roll nano-imprint process Nano-size structure (100nm pitch Al wire grid) P wave: Transmitted E E S wave: Reflected SEM image (plane view) WGF Roll Substrate: TAC(Tri-Acetate Cellulose ) 80um SEM image (cross section view) 100nm-size Aluminum wire pitch WGF film 2

3 Parallel Transmittance Tp Crossed Nicol Transmittance Tc Optical performance of HC & HT grade You can choose either standard grade, HC(High Contrast) or HT(High Transmittance) to suite your need. The Adhesive on a backside of substrate is also available. 100% 80% 60% 1.0% 0.8% 0.6% High Transmittance Tc High Contrast Tc 40% High Transmittance Tp 20% High Contrast Tp 0% % 0.2% 0.0% HT; Type grade 450nm 550nm 650nm High Transmittance HC; High Contrast HT11N (no-adhesive) HT11U (with adhesive) HC11N (no-adhesive) HC11U (with adhesive) Tp (%) 83.59% 89.26% 90.81% Tc (%) 0.21% 0.09% 0.05% Tp (%) 80.33% 83.79% 82.65% Tc (%) 0.05% 0.02% 0.01% * Incident angle 0 deg * No AR coating on WGF * These figures are typical values, not the values for guaranteeing 3

4 260mm 240mm Effective area Effective area Transmission Axis 120mm 260mm Transmission Axis 120mm Product size & Configuration Sheet size Type. 1 Standard model 240x80mmx2windows 230mm 80mm 80mm Sheet # In mirror writing From Al grid surface Type.2 developing 120x180mmx2windows 230mm 180mm Effective area Sheet # In mirror writing From Al grid surface Effective area Configuration HT11N&HC11N grade; no-adhesive Protection film(for TAC) 150μm Substrate(TAC) 80μm WG layer <1μm Protection film(for Al) 110um HT11U&HC11U grade; with-adhesive Sheet # Separator 50μm Sheet # Adhesive 25μm Substrate(TAC) WG layer Protection film(for Al) 80μm <1μm 110um 4

5 Reflectance Rc (%) Reflectance Rp (%) Transmittance Tc (%) Optical performance of HC at oblique incident Tp & Tc, Rp & Rc at oblique incident Tc 0deg Tc 45deg Tc 30deg Tc 60deg Rc 45deg Rp 45deg WGF Rp P-wave light Ip Rc S-wave light Is Tp Tc * These figures are typical values, not the values for guaranteeing 5

6 Tc [%] Tc [%] Reliability Optical performance of WGF before and after environmental tests Heat and humid * These figures are typical values, not the values for guaranteeing Heat resistance (105degC/dry/1000hr) 6

7 Tp (%) Tp (%) Tc (%) Tc (%) Reliability Optical performance of WGF before and after light resintance test Sunshine weather meter 255W/m 2 /BPT63degC/spray free hr (on glass) 300hr (on glass) hr (on glass) 300hr (on glass) * These figures are typical values, not the values for guaranteeing 7

8 Optical performance in NIR range WGF can polarize effectively in a wide range from Visible to NIR. * These figures are typical values, not the values for guaranteeing 8

9 Reducing a reflected light with WGF Cutting specular reflection of IR light with WGF; With a objection illuminated by S-wave and detected by P-wave, excessive specular reflection can be reduce. No IR LED IR LED IR LED + WGF Illuminating a object from the front, specular reflection of light could be so strong that disturb software recognition. By detecting only defuse reflection, the image can be improved. IR LED IR LED + WGF LED WGF: S-wave Defuse reflection A example of scanning a barcode IR Image sensor Specular reflection WGF: P-wave 9

10 Summary Feature Reflective polarization film without absorption loss Flexible & excellent processability for cutting and laminating Less incidence dependence Effective in a wide range from Visible to NIR Excellent durability in a hard environment as high temperature (105degC/dry/1000hr) and humidity (60degC/90%RH/1500hr) Applications Perceiving P-wave light projecting S-wave light EVF(Electric View Finder) Optical parts for HMD, head mounted display) HUD, Head-up display Noise reduction and anti-reflection of IR sensor 10

11 Contact us Japan Asahi Kasei Corporation WGF Marketing & Development Group Tel.: +81 (545) North America Nagase America Corp. CA Office Tel.: Europe Nagase Europe GmbH Tel.: