Patent ID: 7453434

Claim:
A liquid crystal display device comprising: a first liquid crystal display panel for displaying an image in a transmission mode, said first liquid crystal display panel having a number of first pixel electrodes, a first counter electrode for applying an electric field between itself and said first pixel electrodes, and a first liquid crystal layer interposed between said first pixel electrodes and said first counter electrode; a second liquid crystal display panel for displaying an image in a reflection mode, said second liquid crystal display panel having a number of second pixel electrodes, a second counter electrode for applying an electric field between itself and said second pixel electrodes, and a second liquid crystal layer interposed between said second pixel electrodes and said second counter electrode; a first counter voltage generation circuit for applying a first counter voltage optimized for display of the transmission mode to said first counter electrode of said first liquid crystal display panel; and a second counter voltage generation circuit for applying a second counter voltage optimized for display of the reflection mode to said second counter electrode of said second liquid crystal display panel.