NOVELTY - The cell has a semiconductor layer (300) including a set of contact portions (350) and separating channels (550) interposed on a set of front electrodes (200). A transparent conductive layer (400) is arranged on the semiconductor and provided with a same pattern as the semiconductor layer. A set of rear electrodes (500) are separated at fixed intervals by a corresponding channel, where each rear electrode is connected with one of the front electrodes through one of the contact portions, and provided with a light-transmitting portion (570) to enhance a light-transmission area.    USE - Thin film type solar cell for use as a glass window in a building.    ADVANTAGE - The light-transmitting portion can be patterned in the rear electrode for transmitting the solar ray through the light-transmitting portion to provide a wide light-transmission area to obtain the enough visible range to use the solar call as the substitute for the glass window without lowering cell efficiency and increasing processing time. The cell prevents the contamination of the substrate. The rear electrode can be patterned by the printing method to control the entire size of the light-transmitting portion with easiness, so that the visible range is controlled appropriately by changing the light-transmitting portion of solar cell to a desired range. The solar ray can be incident on the substrate from the lower side of the substrate passing through the substrate and the front electrode when transmitting the ray through the light-transmitting portion as the front electrode is exposed through the light-transmitting portion by removing the transparent conductive layer and the semiconductor layer, thus improving the transmittance of solar ray.    DETAILED DESCRIPTION - The semiconductor layers are made of amorphous semiconductor material and microcrystalline semiconductor material.    DESCRIPTION OF DRAWING(S) - The drawing shows a perspective view of a thin film type solar cell.    Front electrodes (200)    Semiconductor layer (300)    Contact portions (350)    Transparent conductive layer (400)    Rear electrodes (500)    Separating channels (550)    Light-transmitting portion (570)