OPTICAL SHEET AND DISPLAY DEVICE

摘要

PROBLEM TO BE SOLVED: To provide an optical sheet capable of controlling the traveling direction of light without causing a loss of the light quantity and a display device provided with the optical sheet.

SOLUTION: The display device is provided with: a light transmission part 11; and a light reflection part 15 for reflecting a part of the light entering from the light entrance surface 13 of the light transmission part 11 so as to emit from the light emission surface 14 of the light transmission part 11. The light reflection part 15 reflects the light so that an emitting angle of the light emitting from the light emission surface 14 becomes smaller than an incident angle of the light entering from the light entrance surface 13. A portion on the light entrance side is the light entrance surface 13 and other portions belong to a light shielding part 16 which does not transmit light. A part of the light entering from the light entrance surface 13 is reflected toward the light emission side by the light reflection part 15 arranged inside the display device. The light reflection part 15 has a slope to be opened obliquely toward the light emission side.

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