Patent ID: 8203671

Claim:
A view angle controllable display device, comprising: two polarizers; a liquid crystal display panel interposed between the two polarizers; and at least two compensating panels interposed between one of the two polarizers and the liquid crystal display panel, wherein both of the two compensating panels include: a pair of polymer films having a retardation value of not less than 1000 nm; liquid crystal interposed between the pair of polymer films and oriented; and an electrode which applies a voltage to the liquid crystal; a birefringence direction of the polymer films and an orientation direction of the liquid crystal are substantially parallel or substantially orthogonal to each other, wherein birefringence directions of two polymer films, from among the pairs of polymer films, are substantially orthogonal to each other, wherein birefringence directions of the other two polymer films, from among the pairs of polymer films, are also substantially orthogonal to each other, and wherein the pair of polymer films are each optically single-axial.