公开(公告)号：US20150009783A1

公开(公告)日：2015-01-08

申请号：US14323150

申请日：2014-07-03

Applicant: CASIO COMPUTER CO., LTD.

Inventor： Kei HANZAWA ,  Eiji YAMAKAWA

IPC: F21V8/00 ,  G04B19/30

CPC classification number: G04B19/30 ,  G02B6/0018 ,  G02B6/0036 ,  G02B6/0055 ,  G02B6/0061 ,  G02B6/0068 ,  G04B19/32

Abstract: There is provided an illumination device including: a light guide plate in which a light diffusion pattern of diffusing incident light is formed to have density that is coarse on one side and gets denser toward the other side; a first light source which is provided on a side corresponding to the one side of the light diffusion pattern in the light guide plate; and a second light source which is provided on a side corresponding to the other side of the light diffusion pattern in the light guide plate.

Abstract translation: 提供了一种照明装置，其包括：导光板，其中形成扩散入射光的光漫射图案，使得在一侧具有粗糙的密度并朝向另一侧变得更致密; 第一光源，其设置在与所述导光板中的所述光漫射图案的一侧对应的一侧; 以及第二光源，其设置在与导光板中的光漫射图案的另一侧对应的一侧。

公开(公告)号：US20240210895A1

公开(公告)日：2024-06-27

申请号：US18536512

申请日：2023-12-12

Applicant: CASIO COMPUTER CO., LTD.

Inventor： Jun MIWA ,  Kei HANZAWA

IPC: G04G9/12 ,  F21V8/00 ,  G02F1/1335

CPC classification number: G04G9/12 ,  G02B6/0088 ,  G02F1/133531

Abstract: A display device includes: a circuit board on which a plurality of electronic components are arranged; a light guide plate arranged to face the plurality of electronic components; a display portion arranged on an opposite side to the circuit board of the light guide plate in such a manner as to face the light guide plate; a light-transmitting plate having light transmissivity, arranged between the light guide plate and the display portion, and configured to be in contact with a front surface of the light guide plate and a back surface of the display portion; and a spacer provided on a front surface of the circuit board and configured to regulate a distance between the circuit board and the light guide plate.