Light diffusing plate and display apparatus

A light diffusing plate, comprising:

• a light transmitting support;
• a diffusing layer having light transmitting spheres;
• and
• a light-sensitive thermal developing material layer which is formed between said light transmitting support and the diffusing layer;
• wherein said light-sensitive thermal developing material layer contains a light-sensitive thermal developing material which forms no color in an exposed areas;
• and
• wherein said light-sensitive thermal developing material is heated to form a color after nearly collimated light is incident from said diffusing layer side.

A light diffusing plate comprising:

• a light transmitting support;
• a diffusing layer having light transmitting spheres;
• and
• a thermal ablative layer formed between said light transmitting support and the diffusing layer;
• wherein the thermal ablative layer which contains a light absorptive thermal ablative material;
• and
• wherein said thermal ablative material in an area which is illuminated by a nearly collimated light incident from a side of said diffusing layer is removed by thermal energy by means of the nearly collimated light.

A light diffusing plate comprising:

• a light transmitting support;
• a diffusing layer containing light transmitting spheres;
• and
• a contacting material which contacts said light transmitting spheres;
• wherein said contacting material contains a light-sensitive material which forms no color in an exposed area and a light absorptive material;
• and
• wherein said light-sensitive material is heated and developed to form a color after nearly collimated light is incident from a side of said diffusing layer.

A light diffusing plate comprising:

• a light transmitting support;
• a diffusing layer containing light transmitting spheres;
• a contacting material which contacts said light transmitting spheres and contains a light absorptive material;
• and
• a light-sensitive material which forms no color in an exposed area and is provided between said contacting material and said light transmitting support;
• wherein said light-sensitive material is heated and developed to form a color after nearly collimated light is incident from a side of said diffusing layer.

A display apparatus comprising:

• a liquid crystal display panel;
• a backlight unit which forces a collimated light to be incident on said liquid crystal display panel;
• and
• a light diffusing plate which is located in an opposite side of said backlight unit against said liquid crystal display panel;
• wherein said light diffusing plate comprises an unrecognizable structure which has an optical refractive power, passing areas through which a collimated light incident from a side of the unrecognizable structure passes, and a non-passing area other than said passing areas, which has relatively low light transmissivity compared with the passing areas;
• and
• wherein materials of said passing areas and non-passing area are applied simultaneously.

A display apparatus comprising:

• a liquid crystal display panel;
• a backlight unit which forces a collimated light to be incident on said liquid crystal display panel;
• and
• a light diffusing plate which is located in an opposite side of said backlight unit against said liquid crystal display panel;
• wherein said light diffusing plate comprises a light transmitting support, a diffusing layer having light transmitting spheres, and a light-sensitive thermal developing material layer which is formed between said light transmitting support and the diffusing layer;
• wherein said light-sensitive thermal developing material layer contains a light-sensitive thermal developing material which forms no color in an exposed area;
• and
• wherein said light-sensitive thermal developing material is heated to form a color after nearly collimated light is incident from said diffusing layer side.

A display apparatus comprising:

• a liquid crystal display panel;
• a backlight unit which forces a collimated light to be incident on said liquid crystal display panel;
• and
• a light diffusing plate which is located in an opposite side of said backlight unit against said liquid crystal display panel;
• wherein said light diffusing plate comprises a light transmitting support, a diffusing layer having light transmitting spheres, and a thermal ablative layer formed between said light transmitting support and the diffusing layer;
• wherein the thermal ablative layer which contains a light absorptive thermal ablative material;
• and
• wherein said thermal ablative material in an area which is illuminated by a nearly collimated light incident from a side of said diffusing layer is removed by thermal energy by means of the nearly collimated light.

A display apparatus comprising:

• a liquid crystal display panel;
• a backlight unit which forces a collimated light to be incident on said liquid crystal display panel;
• and
• a light diffusing plate which is located in an opposite side of said backlight unit against said liquid crystal display panel;
• wherein said light diffusing plate comprises a light transmitting support, a diffusing layer containing a light transmitting spheres, and a contacting material which contacts said light transmitting spheres;
• wherein said contacting material contains a light-sensitive material which forms no color in an exposed area and a light absorptive material;
• and
• wherein said light-sensitive material is heated and developed to form a color after nearly collimated light is incident from a side of said diffusing layer.

A display apparatus comprising;

• a liquid crystal display panel;
• a backlight unit which forces a collimated light to be incident on said liquid crystal display panel;
• and
• a light diffusing plate which is located in an opposite side of said backlight unit against said liquid crystal display panel;
• wherein said light diffusing plate comprises a light transmitting support, a diffusing layer containing light transmitting spheres, a contacting material which contacts said light transmitting spheres and contains a light absorptive material, and a light-sensitive material which forms no color in an exposed area and is provided between said contacting material and said light transmitting support;
• and
• wherein said light-sensitive material is heated and developed to form a color after nearly collimated light is incident from a side of said diffusing layer.

An image display apparatus comprising:

• an image display device having a matrix structure;
• and
• a light diffusing plate comprising:
• an unrecognizable structure which has an optical refractive power;
• passing areas through which a collimated light incident from a side of the unrecognizable structure passes;
• and
• a non-passing area other than said passing areas, which has relatively low light transmissivity compared with the passing areas,
• wherein materials of said passing areas and non-passing area are applied simultaneously, and
• wherein said light diffusing plate is provided on a viewing side of a display screen of said image display device.

An image display apparatus comprising:

• an image display device having a matrix structure;
• and
• a light diffusing plate comprising an unrecognizable structure which has an optical refractive power;
• wherein said light diffusing plate is provided on a viewing side of a display screen of said image display device.