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SCREEN USED AS DISPLAY OF SMALL-SIZED DISPLAY DEVICE HAVING TOUCH PANEL FUNCTION AND SMALL-SIZED DISPLAY DEVICE HAVING TOUCH PANEL FUNCTION, INCLUDING THE SAME

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  • Title:
    SCREEN USED AS DISPLAY OF SMALL-SIZED DISPLAY DEVICE HAVING TOUCH PANEL FUNCTION AND SMALL-SIZED DISPLAY DEVICE HAVING TOUCH PANEL FUNCTION, INCLUDING THE SAME
  • Author: Kamiya Masayuki
  • Subjects: Physics ; Photography ; Cinematography ; Electrography ; Holography ; Apparatus OR Arrangements FOR Taking Photographs OR Forprojecting OR Viewing Them ; Apparatus OR Arrangements Employing Analogous Techniques Usingwaves Other Than Optical Waves ; Accessories Therefor ; Optics ; Optical Elements, Systems, OR Apparatus ; Medicine ; Sciences ; Chemistry ; Physics
  • Language: English
  • Description: PROBLEM TO BE SOLVED: To provide a screen used as a display of a small-sized display device having a touch panel function, and a small-sized display device having a touch panel function, reducing double images.SOLUTION: According to one embodiment, the screen 1 used as a display of the small-sized display device having a touch panel function includes: a Fresnel lens sheet 2 having a Fresnel lens part 22 that converts video light projected from a video light source into substantially parallel light going substantially in the direction of the normal of the screen surface 1a and emits the video light; and an optical control sheet 4 disposed on the side of the Fresnel lens sheet 2 from which the video light is emitted. The optical control sheet 4 includes: a plurality of unit light transmitting parts constituting a part of the video light emitting surface of the optical control sheet 4 and extending in the lateral direction of the screen 1; and a plurality of unit light absorbing parts, which are disposed alternately with the unit light transmitting parts, constitute a part of the video light emitting surface of the optical control sheet 4 and extend in the lateral direction of the screen 1.
  • Creation Date: 20 October 2011

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