Invention Grant
- Patent Title: Display module and display device
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Application No.: US17537348Application Date: 2021-11-29
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Publication No.: US11769441B2Publication Date: 2023-09-26
- Inventor: Masayuki Takagi , Mitsutaka Ide , Tokito Yamaguchi
- Applicant: SEIKO EPSON CORPORATION
- Applicant Address: JP Tokyo
- Assignee: SEIKO EPSON CORPORATION
- Current Assignee: SEIKO EPSON CORPORATION
- Current Assignee Address: JP Tokyo
- Agency: JCIPRNET
- Priority: JP 20198138 2020.11.30
- Main IPC: G09G3/20
- IPC: G09G3/20

Abstract:
A display module includes a display element, a light-guiding optical device, and a control unit configured to perform distortion correction including correction of a chromatic aberration of magnification. The light-guiding optical device is constituted of an optical system having non-axisymmetry in an up-and-down direction with respect to the imaging light entering the light-guiding optical device, and includes a first optical member having positive refractivity, a second optical member having positive refractivity, and a first reflection surface configured to reflect the imaging light toward a pupil position. The refractivity of the first optical member is greater than the refractivity of the second optical member. An abbe number of a constituent material of the first optical member is greater than an abbe number of a constituent material of the second optical member. The control unit performs distortion correction by a different distortion correction amount for each color light.
Public/Granted literature
- US20220172667A1 DISPLAY MODULE AND DISPLAY DEVICE Public/Granted day:2022-06-02
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