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PROBLEM TO BE SOLVED: To provide a display that can inhibit a non-video area from being visually recognized, the non-video area caused by non-pixel areas present between pixel areas of a video source.SOLUTION: In a display 1, the cross-sectional shape of unit shapes 21a and 23a included in an optica...

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Hauptverfasser: HASHIMOTO TATSUJI, GOTO MASAHIRO
Format: Patent
Sprache:eng ; jpn
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Zusammenfassung:PROBLEM TO BE SOLVED: To provide a display that can inhibit a non-video area from being visually recognized, the non-video area caused by non-pixel areas present between pixel areas of a video source.SOLUTION: In a display 1, the cross-sectional shape of unit shapes 21a and 23a included in an optical sheet 20 is formed to be a triangular shape; when the base angle of the triangular shape of the unit shapes 21a and 23a is θ, a higher refractive index of the refractive indices of optical layers adjacent to each other at an interface on which the unit shapes 21a and 23a are formed is n1, the refractive index lower than the refractive index n1 is n2, and the distance between an optical sheet 20 and a display layer 11e of a video source 11 is L, the degree of diffusion D as an index indicating the degree at which video light V is diffused by the optical sheet 20 is defined as D=θ×(1-(n2/n1))×L, and when a pixel arrangement pitch at which pixel areas are arranged is PP, 17≤D/PP≤35 is satisfied.SELECTED DRAWING: Figure 1 【課題】映像源の画素領域間に存在する非画素領域が起因となる非映像領域が視認されてしまうことを抑制することができる表示装置を提供する。【解決手段】表示装置1は、光学シート20が有する単位形状21a,23aの断面形状が三角形状に形成されており、単位形状21a,23aの三角形状の底角をθとし、単位形状21a,23aが形成された界面を介して互いに隣接する光学層の屈折率のうち屈折率が高い方の屈折率をn1とし、屈折率がn1よりも低い方の屈折率をn2とし、光学シート20と映像源11の表示層11eとの間の距離をLとして、光学シート20によって映像光Vが拡散される程度を表す指標としての拡散度Dを、D=θ×(1−(n2/n1))×Lと定義し、画素領域が配列されている画素配列ピッチをPPとしたとき、17≦D/PP≦35を満たす。【選択図】図1