| 摘要 |
PROBLEM TO BE SOLVED: To develop a light guide plate of an optical member integrated type which does not produce bright spot emission by air bubble inclusions. SOLUTION: The optical member integrated type light transmission plate which does not produce bright spot emission by air bubbles inclusions has at least upper and lower surface 1a, b, and an incident side surface 1c consisting of a side face between the upper and lower surfaces. An optical member 3 is adhered through an adhesive layer 2 on the surface which does not have an optical emission means of the upper and lower surfaces of the light guide plate 1 for performing an optical path conversion of incident light from the incident side surface in the direction other than the upper and lower surface through an optical emission means A formed on one of the upper and lower surfaces. After sticking by pressure the optical member through the adhesive layer on the surface which does not have the optical emission means of the upper and lower surfaces of the light guide plate, the pressurization adhesion processing is performed under the conditions of 65 deg.C or less and 0.3 or less and 0.3 MPa or more. A liquid crystal display device of transmission type or the reflection type- having a bright and legible display can be manufactured efficiency by using the light guide plate as a back light or a front light, and the optical member integrated type light guide plate of the above characteristics is obtained in the state with little warpage. |
