New Films 新開発フィルムのご紹介

We develop and manufacture transparent conductive film for touch panel. We cultivate our own technology of touch panel, and apply it for developing of new transparent conductive film. From the dawn of resistive touch panel, we have produced ITO film by sputtering. Recently we focus on developing of ITO film for projected capacitive touch panel.

Invisible ITO film ( For Projected Capacitive Touch Panel) Download PDF leaflet

Projected capacitive type of touch panel can recognize touch location through patterned conductors. Although ITO is a transparent conductor, the patterning is visible because ITO’s refractive index and reflection rate are high. To get better sensitivity for touch location, ITO resistance should be low, however, low resistance ITO affects for visibility. We solved visibility problem and able to provide low resistance invisible ITO film.

Our Advantage Achieved 80ohm/sq and invisible ITO film

Features

  • Low resistance
    Produce resistance lower from 150ohm/sq which is standard ITO film to 80ohm/sq.
    Low resistance ITO enables produce lager touch panel and perform better sensitivity of touch location.
  • Invisibility
    Keep the good quality that never bothers for practical use
  • Clarity
    Offering superior clarity with less than 1% haze
  • After annealing less
    After annealing process is done by us which promote ITO crystallization.
  • Substrate
    In addition to common PET film, we develop the touch panel with isotropic film and retardation film which is suitable for on-cell touch panel. (Refer to product range of ITO film)

Application

  • For projected capacitive type of touch panel

Item IPF-05H125
Film thickness* 125μm
Total Transmittance 88%
Haze 0.4%
Surface resistance 80Ω/□

*Variation of thickness is available.
*These data are not guaramteed values.
*For measurement conditions, see the ITO film lineup table.

ITO Film Lineup

Item IPF-05H125 IPF-02G100
IPF-03G125
IPF-04G188
SSS-F711
(under depelopment)
SSS-F715
(under depelopment)
Remarks
Base film PET PET isotoropy Film 1/4λ Film  
Film thickness 125μm 100μm
125μm
188μm
100μm 86μm Contact-type thickness meter
Total Transmittance 88% 90% 87% 86% JIS- K7361-1
Haze 0.4% 0.4〜0.8% 0.4% 0.4% JIS-K7136
Surface resistance 80Ω/□ 150Ω/□ 90Ω/□ 90Ω /□ Four-poles ohmmeter
Heat Reliability
(120℃×180min)
1.0 1.0 1.0 1.0 R/R0((Ω/□)/(Ω/□)) Change ratio
Invisibility ○* ○* GUNZE Method

*The use of polarizing plate and the patterning by photolithography are assumed.
*These data are not guaranteed values.

CONTACT US ON THIS PAGE

GUNZE LIMITED
ELECTRONIC COMPONENTS DIVISION

TOKYO SALES ADMINISTRATIVE
TEL:81-3-3276-8717 FAX:81-3-3276-8734

OSAKA SALES ADMINISTRATIVE
TEL:81-6-7731-5770 FAX:81-6-7731-5880