| 摘要 |
PURPOSE:To obtain a flexible type liquid crystal display element which can be curved, permits reduction in thickness and has a large degree of freedom in shape by forming display elements, light emitting source elements and power sources necessary for operating these elements as well as active elements having a signal processing function on a flexible substrate having light transmittability. CONSTITUTION:Both surfaces 18, 20 of a light transmittable and flexible substrate 19 are formed of transparent electrodes. An electroluminescence phosphor layer 21 is formed on one transparent electrode 20 and the rear surface of the phosphor layer is an EL phosphor layer formed with an electrode 22. The electrode 20 is formed of indium oxide or tin oxide and the EL phosphor 21 is formed by dispersing zinc selenide, zinc sulfide, etc. in a dielectric. Emission of light is made possible by impressing an electric field to the electrodes 20, 22. A flexible type liquid crystal display element is formed by superposing the substrate formed with thin film transistors 15 and the substrate formed with the EL phosphor layer and inserting a liquid crystal between two sheets of the substrates. A twisted nematic type is used for the liquid crystal of the display material. A voltage is impressed on the liquid crystal and the display element operates when the thin film transistors are turned on. |
