Seamless tiled active matrix liquid crystal display

A seamless active tiled LCD device, comprising:

• a LCD with a thin front plate, a sealing side wall and a back plate, said LCD having a LC layer and pixels;
• a thin sealing cover over the thin sealing wall of the LCD;
• and
• an adhesive array having at least one spacer between the pixels and between the front and back plates to enhance thickness uniformity of the LC layer in the LCD.

A tiled,.transparent LCD, comprising:

• a transmissive LCD having a back plate with a side wall, and a reflective layer on the side wall of the back plate;
• and
• a backlight;
• said reflective layer reflecting light emitted from the backlight to reduce the apparent seam width of the LCD.

A tiled reflective LCD, comprising:

• a transmissive LCD having a back plate with a side wall, and a reflective layer on the side wall of the back plate;
• and
• a reflector located near the back plate of the LCD;
• said reflective layer reflecting light reflected by the back reflector to reduce the apparent seam width of the tiled display.

A tiled active LCD display system comprising:

• a display screen having N by M thin seamless active LCD tiles;
• each tile having at least one backlight with a light source and driver and at least one connector;
• a driving and control circuit;
• wherein all tiles are connected to said circuit through said connector;
• means for applying voltage and signals to the driving and control circuit and tiles to display information and images according to the signals.

A seamless tiled LCD, comprising:

• a good mechanical strength backlight, which serves as a base plate of a display screen, said backlight comprising:
• (a) at least one light source;
• (b) a reflective chamber having a first and a second opposing surface and housing said light source, said first surface being flat;
• (c) a good mechanical strength frame holding said chamber and said diffusing front plate;
• at least one transparent spacer located between the opposing surfaces of said reflective chamber to maintain the flat shape of said first surface;
• at least two thin LCD tiles, said tiles connected to the first surface so that they are supported by the first surface, said tiles having electrodes;
• and
• at least one set of connectors located between said tiles to connect the electrodes of adjacent tiles.

A seamless tiled LCD, comprising:

• a good mechanical strength reflector, which is as a base plate of the display screen, and comprises of diffusing reflective plate or a mirror and a good mechanical strength frame.
• at least two thin LCD tiles, said LCD tiles are mounted on the outside surface of said diffusing front plate;
• at least one set of connector located between said tiles to connect the electrodes of the adjacent tiles;
• and
• means mounting said thin LCD tiles on a good mechanical strength reflector, to form a thin profile, light weight and very strong large screen display.

A sealing method for thin sealing wall LCD sealing, which comprises

• a spacer mixed adhesive is deposited at the sealing area, e.g. by printing, between said thin front plate and thin back plate, then cured;
• cutting by laser along the sealing wall;
• means using laser cutting to form a very thin sealing wall, because the thin front plate and thin back plate will be melted during laser cutting. At the same time, at said cutting area still has sealing adhesive, different sealing wall can be obtained depending on sealing adhesive pattern design;
• the width of sealing wall van be range of 0.01 to 10 mm.

A large screen spacer-shadowless backlight, comprising:

• at least one light source;
• one front diff-using plate and one transparent back plate;
• at least one transparent spacer located between said front diffusing plate and transparent back plate;
• a side wall located at the four sides of the front diffusing plate and the transparent back plate and between said plates;
• a reflective layer located at the outside of the back plate and the side wall to form a reflective chamber;
• a good mechanical strength frame;
• means the front diffusing plate, the transparent back plate, spacer, side wall, reflective layer and mechanical frame forming a large screen spacer-shadowless good mechanical strength backlight.