US 2024/0201431 A1 · FOLDABLE DISPLAY DEVICE

Abstract

A foldable display device includes a reflective display panel, a light guiding layer and at least one light source. The light guiding layer is located on the reflective display panel and includes a non-foldable area, a foldable area and a transition area. The light guiding layer satisfies the following formulas: D2<D1, W2≥Rx π and J1≤(L−W2)/2−W1, in which D1 is a thickness of the non-foldable area, D2 is a thickness of the foldable area, W1 is a width of the non-foldable area, W2 is a width of the foldable area, R is a folding radius of the reflective display panel, J1 is a width of the transition area, L is a length of the light guiding layer. The light source is located on the reflective display panel and faces the sidewall of the light guiding layer.

Claims15

Dependent claims

A foldable display device, comprising:

a reflective display panel;
a light guiding layer located on the reflective display panel, comprising:
a non-foldable area;
a foldable area located at a center portion of the light guiding layer;
and
a transition area located between the non-foldable area and the foldable area, the light guiding layer satisfies the following formulas:
D2<D1, W2≥Rx π, and J1≤(L−W2)/2−W1, wherein D1 is a thickness of the non-foldable area, D2 is a thickness of the foldable area, W1 is a width of the non-foldable area, W2 is a width of the foldable area, R is a folding radius of the reflective display panel, J1 is a width of the transition area, and L is a length of the light guiding layer;
and
at least one light source located on the reflective display panel and faces a sidewall of the non-foldable area, configured to emit a light beam to the light guiding layer.

6 more elements

Dependencies are inferred from the claim text.

Foldable display device

Life of this patent

Foldable display device

Life of this patent

Abstract

Claims15