公开(公告)号：US11221513B2

公开(公告)日：2022-01-11

申请号：US16439449

申请日：2019-06-12

Applicant: Apple Inc.

Inventor： Supriya Goyal ,  Yuxi Zhao ,  Xinsheng Chu ,  Chan Hyuk Park ,  Min Tao ,  Wenyong Zhu

IPC: G02F1/13 ,  G02F1/13357 ,  F21V8/00 ,  H05K1/11 ,  G02F1/1345 ,  H05K1/02 ,  H01R12/62 ,  H01R4/04 ,  G02F1/1368 ,  G02F1/133 ,  G09G3/00 ,  G09G3/36

Abstract: An electronic device includes display layers such as liquid crystal display layers and a backlight unit that provides illumination for the display layers. The backlight unit includes light-emitting diodes that emit light into the edge of a light guide film. To minimize the inactive area of the display, the light-emitting diodes are tightly spaced to approximate a line light source instead of point light sources. Color and/or luminance compensation layers are incorporated at various locations within the backlight structures to ensure that the backlight provided to the display layers is homogenous. A thin-film transistor layer of the display is coupled to a printed circuit board by a flexible printed circuit. The flexible printed circuit has additional solder mask layers to improve robustness, encapsulation, and traces with a varying pitch.