Fig. 1. Schematic diagram of the light waveguide LCD based on the flexoelectric effect. (a) Homogeneous state, (b) striped state, and (c) random polydomain state.

Fig. 2. Chemical structure of liquid crystal dimers CB7CB and CB9CB.

Fig. 3. Polarizing optical microphotographs of the waveguide LCD under various applied voltages. The frequency of the applied voltage is 30 Hz.

Fig. 4. Photographs of the waveguide LCD under various applied voltages. The frequency of the applied voltage is 30 Hz.

Fig. 5. Outgoing light intensity of the waveguide display versus applied voltage with different frequencies.

Fig. 6. Outgoing light intensity of the waveguide display versus time under 100 ms AC voltage pulse. The amplitude of voltage is 15 V, and the frequency of the voltage is 20 ms.

Fig. 7. Outgoing light intensity of the waveguide display versus applied voltage with the LED installed on different edges. (a) LED installed on the edge parallel to the stripe. (b) LED installed on the edge perpendicular to the stripe.

Fig. 8. Photographs of the waveguide display. (a) Transparent state in transparent display mode when applied voltage is 0. (b) Bright state in transparent display mode when applied voltage is 15 V. (c) Dark state in direct view display mode when applied voltage is 0. (d) Bright state in direct view display mode when applied voltage is 15 V.