| 摘要 |
PROBLEM TO BE SOLVED: To avoid the concentration of light for irradiation to a liquid crystal layer and to avert the exertion of an adverse influence on liquid crystals without attaining a high temp. by specifying the relation between the thickness of the glass substrate on a liquid crystal layer side of glass substrates constituting flat plate type microlenses and a focal length to an adequate relation. SOLUTION: This liquid crystal display device is provided with the liquid crystal layer 4 between a pair of translucent panels 2, 3. Light opaque parts 6 and pixel apertures 7 to be transmitted with light are formed on one surface side of the liquid crystal layer 4. The translucent panel 2 is constituted by joining two sheets of the glass substrates 8, 9. Many recessed parts 10 are regularly formed on the joint surface of two sheets of the glass substrates 8, 9. A high-refractive index material is packed into these recessed parts 10, by which planoconvex lenses 11 are formed. These lenses are so formed as to satisfy 0.6/t<=(1/r)(n2 -n1 )/n3 <1/t when the refractive index of the glass substrate 8 is defined as n1 , the refractive index of the high-refractive index material as n2 , the refractive index of the glass substrate 9 as n3 , the radius of curvature of the recessed parts 10 as (r) and the thickness of the glass substrate 9 as (t). |
