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    • 7. 发明公开
    • BACKLIGHT MODULE AND DISPLAY DEVICE
    • EP3640524A1
    • 2020-04-22
    • EP17909564.1
    • 2017-06-22
    • Wuhan China Star Optoelectronics Technology Co., Ltd.
    • XU, Pengbo
    • F21K9/20G02F1/1333F21V7/00F21V5/02H04M1/22F21Y115/10
    • A backlight module (100), comprising: a light guide plate (120) which comprises a light incident surface, a light exit surface, and a reflective surface; a reflective plate (110), which is disposed on the reflective surface of the light guide plate (120) and which is used for reflecting a transmitted light in the light guide plate (120) to the light exit surface; a diffusion sheet (130), which is disposed on the light exit surface of the light guide plate (120) and which is used for diffusing a light which is emitted from the light guide plate (120); a prism sheet group (140), which is disposed on a light exit surface of the diffusion sheet (130); a square sealant layer (150), which is disposed around the light exit surface of the light guide plate (120); a light source (170), which is disposed at a light incident surface side of the light guide plate (120); a light shielding layer (160), which is disposed between the diffusion sheet (130) and the square sealant layer (150) and which is disposed at an outer side of the prism sheet group (140), the light shielding layer (160) being disposed in correspondence with a light-incident side of the diffusion sheet (130); the light shielding layer (160) comprises an intermediate section (161) and a lateral section (162) which are separated, the length of the intermediate section (161) being greater than the length of the lateral section (162); two sides of the lateral section (162) are fixedly connected to the diffusion sheet (130) and the square sealant layer (150) respectively, while only one side of the intermediate section (161) is fixedly connected to the square sealant layer (150).
    • 9. 发明公开
    • OPTICAL MEMBER, DISPLAY DEVICE, AND LIGHTING DEVICE
    • EP3617755A1
    • 2020-03-04
    • EP18791436.1
    • 2018-02-13
    • Sony Corporation
    • FURUKAWA, NorimasaNAKAKI, Kenichi
    • G02B5/02F21S2/00F21V5/00F21V5/02G02F1/1335F21Y115/10
    • An optical member is provided that achieves a desired light distribution characteristic with a simple configuration. The optical member extends along a first plane and has a thickness in a first direction perpendicular to the first plane. The optical member includes n-number of inclined surfaces. The n-number of inclined surfaces include first to n-th inclined surfaces. The first to n-th inclined surfaces are positioned in respective regions other than regions overlapping each other in the first direction. The first to n-th inclined surfaces are each inclined at an angle A m with respect to the first plane and allow entering light to pass therethrough. The angle A m is smaller than 90 degrees. The following conditional expression (1) and the following conditional expression (2) are satisfied, WA ≥ A m − A m − 1 A n > A n − 1 ⋯ > A m > A m − 1 > ⋯ A 2 > A 1 where "WA" is an angle corresponding to a value equal to or smaller than a half-width of a light distribution of the entering light, "A m " is an angle of an m-th inclined surface with respect to the first plane, "A m-1 " is an angle of an (m-1)-th inclined surface with respect to the first plane, "n" is a natural number that is equal to or greater than 2, and "m" is any natural number that is equal to or smaller than "n."