| 摘要 |
PROBLEM TO BE SOLVED: To develop a scattering type tacky adhesive layer which hardly generates a Rayleigh scattering and diffraction scattering and hardly generates dissolution of a polarization state, backward scattering and coloration of scattered light. SOLUTION: The scattering type tacky adhesive layer 1 is formed by dispersing and incorporating transparent colorless particles 11 of 1 to 20 in the scattering parameterαdiefined by equation:α=πD/λwhen the grain size is defined as D and the wavelength of incident light asλ, into a light reansmissible tacky adhesive layer to the state that the particle projection areaγdefined as the total sum of the projection are per unit area of the transparent colorless particles 11 with respect to the plane of the tacky adhesive layer attains 0.1 to 1. At least one layer of this scattering type tacky adhesive layer 1 is installed to an optical element 2. As a result, the glittering of a screen and the suppression of the shade of a liquid crystal layer, the importation of diffusivity to reflected light, etc., may be achieved and a liquid crystal display device having excellent brightness and display grade and good visibility may the formed. The reduction in the weight and thickness is resulted by omission of members by avoiding the arrangement of discrete light scattering plates.
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