Abstract: A transmission type or projection type liquid crystal display device includes a light source and an active matrix type liquid crystal display panel provided with a thin film transistor arrangement. A shielding film is included for cutting off light incident upon the thin film transistor arrangement from the light source. Electrode terminals of the liquid crystal display panel and outputs of driving LSI circuits are connected to each other by flexible substrates with the connected portions between the electrode terminals of the liquid crystal display panel and the flexible substrates protected by a connected portion protecting resin. The liquid crystal display device is further provided with a light shielding device for covering at least the protecting resin portion of the liquid crystal display panel, so as to prevent light of the light source from entering the region of the connecting portion protecting resin.

Abstract: A liquid crystal projection apparatus includes first, second and third liquid crystal display panels, first, second and third liquid crystal display panel driving circuits and a control circuit. The liquid crystal projection apparatus projection apparatus projects and displays pictures of the first, second and third liquid crystal display panels superimposing them on a screen. Each of the first, second and third liquid crystal display panel driving circuits applies driving voltages based on display data to scanned liquid crystal portions in the corresponding liquid crystal display panel. The driving voltages are inverted in polarity for every horizontal scanning period and also for every frame. In addition, at least one of the first, second and third liquid crystal display panels receives driving voltages of opposite polarities with respect to the remaining two panels.

Abstract: The invention relates to a drive apparatus for a liquid crystal display device. The voltage, to be applied to longitudinally and latitudinally arranged liquid crystal cells of the liquid crystal display device, is altered in polarity from field to field and from frame to frame, whereby the occurrence of flicker is prevented. The field discriminating device counts the numbers of lines in first and second fields by synchronizing a vertical synchronizing signal at a leading point of a field time. Thereafter the difference in the number of lines between the first and second fields is detected, the field times being thereby discriminated. When a video signal is erroneous, the field discriminating device provides a field discriminating signal, the level of which is changed alternately from field time to field time.

Abstract: The invention relates to a drive apparatus for a liquid crystal display device. The voltage, to be applied to longitudinally and latitudinally arranged liquid crystal cells of the liquid crystal display device, is altered in polarity from field to field and from frame to frame, whereby the occurrence of flicker is prevented. The field discriminating device counts the numbers of lines in first and second fields by synchronizing a vertical synchronizing signal at a leading point of a field time. Thereafter the difference in the number of lines between the first and second fields is detected, the field times being thereby discriminated. When a video signal is erroneous, the field discriminating device provides a field discriminating signal, the level of which is changed alternately from field time to field time.