Patent ID: 11921371
Assignee: THE SWATCH GROUP RESEARCH AND DEVELOPMENT LTD
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A method of fabricating a liquid crystal display device comprising a reflective or transflective liquid crystal cell including liquid crystal molecules aligned in a planar or vertical manner, said liquid crystal cell being formed of a transparent front substrate located on the side of an observer, and a transparent rear substrate which extends beneath, parallel to, and at a distance from the front substrate, the front and rear substrates being joined to each other with a sealing frame which defines a sealed enclosure in which a liquid crystal composition is confined, the front and rear substrates being coated on opposite faces thereof with electrically conductive transparent electrodes and counter-electrodes, optical properties of the liquid crystal composition being modified by application of an electric field at a point of intersection between an electrode and a corresponding counter-electrode, the liquid crystal display device being provided with a reflective polarizing film arranged to absorb a first component of light which enters the liquid crystal cell through the front substrate, and to reflect a second component of light polarized in a direction orthogonal to that of the first component, the method comprising:
embossing the reflective polarizing film to impart thereto a shape visible to the observer through the front substrate of the liquid crystal cell,
depositing a transparent levelling layer in hollows on an upper face of the reflective polarizing film, an upper face of the levelling layer being parallel to an underside of the rear substrate,
applying an adhesive layer to the upper face of the levelling layer, the adhesive layer being parallel to the underside of the rear substrate and the upper face of the levelling layer, and
securing the reflective polarizing film to the underside of the rear substrate by securing the adhesive layer to the underside of the rear substrate.