| 摘要 |
<p>PURPOSE:To prevent the deformation due to pressure difference by providing a notched part, which communicates a cavity part in an instrument and the air in an adhesive layer adhering a surface sheet and a frame member constituting the profile part of a thin and small-sized electronic instrument. CONSTITUTION:A thin electronic instrument, for example, an electronic calculator is formed with a surface sheet 1, a frame member 5, and a back sheet 7. The surface sheet 1 is provided with a display part 2, a solar battery part 3, and a key part 15, and an adhesive layer 13a which has aperture parts 21, 22, and 23 in response to the parts is sandwiched between the surface sheet 1 and the frame member 5. A notched part 24 communicating to aperture parts 21, 22, and 23 and a notched part 25 communicating to the external are provided in the adhesive layer 13a. Thus, the deformation of the case based on the variance of pressure in the case which is generated by the variance of temperature is prevented well to facilitate positioning at an assembling time.</p> |
