| 摘要 |
<p>PURPOSE:To improve color balance by increasing the ratio of the weight of pigment contained in respective colored resin layers to that of resin in the order of blue, green and red layers and almost uniformizing the scattering strength in respective colored resin layers. CONSTITUTION:When the weight P of the pigment contained in respective color resin layers to the weight V of resin is expressed as (P/V)B in the blue resin layer, (P/V)G in the green resin layer and (P/V)R in the red resin layer, respective layers are formed so as to satisfy (P/V)B<(P/V)G<(P/V)R. Preferably, the ratio of (P/V)B:(P/V)G:(P/V)R is set up to (0.5-0.8):(0.8-0.95):1.0 when (P/V)R is defined as 1.0 Since the P/V can be optionally controlled by selecting the quantity of the pigment scattered in the resin and the distribution of resin, accurate control can be attained.</p> |
