Display unit and driving method therefor

Details Display unit and driving method therefor Display unit and driving method therefor

2005-04-26

2005-04-26

Dang, Hung Xuan (Department: 2873)

Optical: systems and elements

Optical modulator

Light wave temporal modulation

Reexamination Certificate

active

06885489

ABSTRACT:
The invention provides an electrochromic display unit with high-quality display. The display unit comprises a transparent electrode (1), a display layer (2) which is formed on the transparent electrode (1) and which changes a color according to the amount of accumulated electrical charges, and an ion conductive layer (3) formed on the display layer (2). A plurality of picture electrodes (4) are formed on the ion conductive layer (3) on the side opposite to the display layer (2). The picture electrodes (4) are driven independently by, for example, a corresponding thin film transistors (6). In driving, by applying a drive current having given amount of electrical charges and then applying a certain amount of an inverted current, a certain amount of coloration is deducted, and extra coloration of the display layer (2) is eliminated.

REFERENCES:
patent: 4175836 (1979-11-01), Redman et al.
patent: 6118573 (2000-09-01), Kubo et al.
patent: 6661563 (2003-12-01), Hayashi et al.
patent: 10-161160 (1998-06-01), None

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