| abstract |
(57) [Summary] [Objective] To provide a light valve device capable of high brightness and high contrast display. A light modulating layer 33 is sandwiched between a transparent substrate 132 having a counter electrode 141 formed thereon and a substrate 131 having a reflecting electrode 135 formed thereon, and the transparent plate 32 is bonded to the transparent substrate 132 side via a transparent bonding body 133. Configure a light valve device. The counter electrode 141 comprises an ITO thin film 141b and first and second dielectric thin films 141a and 141c formed on both surfaces thereof to form an antireflection film. The dielectric thin film has a refractive index of 1.6 to It is formed of the material of 1.8. The dielectric thin film has an optical thickness of λ / 4 (λ is the designed main wavelength), the ITO thin film 141b has an optical film thickness of λ / 2. Each pixel has a reflective electrode 135, and the reflective electrode 1 is provided by a signal to the thin film transistor 137. Align the liquid crystal on 35. A polymer dispersed liquid crystal is used as the liquid crystal 33. Incident light enters from the side of the counter electrode 141, passes through the liquid crystal layer 33, is reflected by the reflection electrode 135, and is reflected by the counter electrode 1 The light is emitted from the 41 side. |