US 11,835,819 B2
Reflective sheet, backlight module, and display device
Tzu-Ching Yang, Kaohsiung (TW); Ya-Yun Hsieh, Kaohsiung (TW); Pei-Ling Kao, Kaohsiung (TW); and Pei-Fen Hou, Kaohsiung (TW)
Assigned to Radiat Opto-Electronics Corporation, Kaohsiung (TW)
Filed by Radiant Opto-Electronics Corporation, Kaohsiung (TW)
Filed on Oct. 26, 2022, as Appl. No. 17/973,761.
Application 17/973,761 is a continuation of application No. PCT/CN2021/119156, filed on Sep. 17, 2021.
Prior Publication US 2023/0106059 A1, Apr. 6, 2023
Int. Cl. G02F 1/00 (2006.01); G02F 1/13357 (2006.01)
CPC G02F 1/133605 (2013.01) [G02F 1/133603 (2013.01); G02F 1/133608 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A reflective sheet comprising: a plurality of perforations for disposing a plurality of light-emitting elements therein, the reflective sheet further comprising a central line passing through its center, at least one first dimming area, and at least one second dimming area, wherein the distance between the at least one first dimming area and the central line is smaller than the distance between the at least one second dimming area and the central line, the light-emitting elements are distributed in the at least one first dimming area and the at least one second dimming area, the at least one first dimming area has a first dimming means, the at least one second dimming area has a second dimming means, and a dimension of the first dimming means is different from a dimension of the second dimming means; and wherein each of the at least one first dimming area and the at least one second dimming area has a bottom wall and a surrounding wall connected to the bottom wall, the end of the surrounding wall surrounds an opening, the perforations are formed in each of the at least one first dimming area and the at least one second dimming area, the openings of the at least one first dimming area and the at least one second dimming area are located on a same plane, a vertical distance is formed between the bottom wall and the opening, the dimension of the first dimming means is the vertical distance of the at least one first dimming area, the dimension of the second dimming means is the vertical distance of the at least one second dimming area, and the dimension of the first dimming means is smaller than the dimension of the second dimming means.