NOVELTY - A photovoltaic module apparatus comprises a continuous flexible sheet for fabricating flexible solar cell modules; and a moisture barrier layer. The continuous flexible sheet includes a front surface and a back surface. One of the front surface and the back surface includes greater than or equal to 2 moisture barrier regions and a separation region. The separation region surrounds each moisture barrier region and physically separates adjacent moisture barrier regions. The moisture barrier layer is formed on each of the moisture barrier regions but not on the separation region.    USE - Photovoltaic module apparatus for use in solar energy production applications.    ADVANTAGE - The apparatus is sealed against moisture transmission from outside environment, thus achieving better reliability for producing power. The flexible sheet is transparent to visible light and resistive to moisture permeation. The moisture barrier layer has a water vapor transmission rate of less than 10-3 g/m2/day. The placement of the moisture sealant on the separation region, which does not have a moisture barrier layer, assures good mechanical bond between the moisture sealant and the back surface at the separation region.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method of manufacturing a flexible photovoltaic module (1), comprising:    (A) providing a transparent elongated protective sheet (7, 8) having a front surface and a back surface including greater than or equal to 2 moisture barrier regions and a separation region;    (B) forming a moisture barrier layer on each moisture barrier region but not on the separation region;    (C) disposing a solar cell circuit over each of the moisture barrier layers, where each solar cell circuit includes a front light receiving side and a back substrate side;    (D) disposing a moisture sealant (9) onto the separation region to form greater than or equal to 2 cavities where each cavity is at a location corresponding to the moisture barrier regions and each cavity holds one solar cell circuit with the front light receiving side facing the transparent elongated protective sheet;    (E) at least partially covering each solar cell circuit with a support material on both the front light receiving side and the back substrate side;    (F) placing a second protective sheet over the support material and the moisture sealant to enclose the cavities and to form a stack; and    (G) heating the stack to form the photovoltaic module.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic cross-sectional view of a flexible thin film solar module.    Flexible photovoltaic module (1)    Cells (2a, 2b, 2c)    Wires (4)    Protective sheet (7, 8)    Moisture sealant (9)