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: In a multi-layer matrix type liquid crystal display panel having a stack of liquid crystal display cells and matrix electrodes provided for respective ones of the liquid crystal display cells, the supports of the respective liquid crystal display cells are piled sequentially, one on top of the other, with a first dimension sequentially longer and a second dimension sequentially shorter, thereby allowing enough room on all sides for electrode connections. A rigid circuit board has terminals which face away from the terminals of the display panel. The terminals of the display panel and the circuit board are connected through a plurality of flexible sheets.

Abstract: Two or more liquid crystal units are disclosed herein to provide a greater area liquid crystal display panel. Each of the liquid crystal display units has a front support and a back support both of which are adhesively attached to each other via a proper seal resin applied on the supports along all but one side or along all but two opposite sides thereof. In an edge portion including the sides where no seal resin is applied, there is formed an opening for injection of liquid crystal material into a cavity defined between the two supports. After injection of the liquid crystal material the opening is pre-sealed with the adhesive material which may be solidified through thermal treatment or light treatment. The edge portions of the two liquid crystal display panels are situated in contact relationship with each other and bonded together by the use of the adhesive material which may be solidified through thermal treatment or light treatment.

Abstract: In a multi-layer matrix type liquid crystal display panel having a stack of liquid crystal display cells and matrix electrodes provided for respective ones of the liquid crystal display cells, the supports of the respective liquid crystal display cells are piled sequentially, one on top of the other, with a first dimension sequentially longer and a second dimension sequentially shorter, thereby allowing enough room on all sides for electrode connections. A rigid circuit board has terminals which are located in a complementary fashion with respect to the terminals of the display panel. The opposing terminals of the display panel and the circuit board are connected through a flexible sheet.