Display device

Abstract

The invention provides a display device which can increase the switching response speed between a transparent state and an opaque state. The display device (1) has a liquid crystal panel (2) that switches between a transparent state and an opaque state, a first light source (4), a light guide plate (3) arranged on a back surface of the liquid crystal panel and made of a transparent material, the light guide plate having an incident surface (3a) facing the first light source and an outgoing surface (3c) facing the back surface of the liquid crystal panel, propagating light emitted from the first light source and incident through the incident surface, and outputting the light toward the liquid crystal panel from the outgoing surface, a second light source (5) configured to illuminate an object (10) arranged on an opposite side to the liquid crystal panel with the light guide plate interposed therebetween; and a control part (6) which controls the liquid crystal panel in an opaque state, and extinguishes the second light source in the lightening period of the first light source, and controls the liquid crystal panel in a transparent state, and extinguishes the first light source in the lightening period of the second light source.

Description

technical field [0001] The present invention relates to a display device capable of switching between a transparent state and an opaque state. Background technique [0002] Conventionally, an element having a dimming function of transmitting light in a transparent state or blocking light in an opaque state has been proposed (for example, refer to Patent Document 1). [0003] For example, the light-adjusting film disclosed in Patent Document 1 has: two transparent conductive resin substrates; ; Set between the transparent conductive resin base material and the light-adjusting layer, including an organic binder resin and silicon dioxide particles, and an undercoat layer with an average film thickness of 30nm-75nm. In addition, the light-adjustable film maintains a clear colored state without light scattering when no electric field is applied, but switches to a transparent state when an electric field is applied. [0004] Patent Document 1: (Japanese) Unexamined Patent Applic...

AI Technical Summary

Problems solved by technology

[0005] However, in the light-adjusting film disclosed in Patent Document 1, the response time to the electric field during decolorization is within 1 second to 50 seconds, and the response time to the electric field during coloring is within 1 second to 100 seconds. longer

Therefore, this dimming film is not suitable for applications that require switching between transparent and opaque states in a short period of time.

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