Shading device

Patent metadata

Field	Value
Publication number	US-11148510-B2
Application number	US-202016983424-A
Country	US
Kind code	B2
Filing date	Aug 3, 2020
Priority date	Apr 14, 2017
Publication date	Oct 19, 2021
Grant date	Oct 19, 2021

Abstract

A shading device comprises: a shading member formed using a dimming glass plate capable of changing light transmittance, the shading member having a plate shape; a display apparatus being capable of transmitting light and disposed on a surface of the shading member, the surface being to face an operator during use of the shading member, in such a manner that a display portion faces the operator; an image pickup device to pick up, as an image, a region which an opposite surface of the surface faces, and generate image pickup data; a data processing circuit to generate display image data to be displayed on the display portion during use of the shading member, based on the image pickup data generated by the image pickup device; and a switch to change light transmittance of the dimming glass plate.

First claim

What is claimed is:

1. A shading device comprising:
a shading member formed using a dimming glass plate that is capable of changing light transmittance, the shading member having a plate shape;
an organic EL display panel being separate from the dimming glass plate and capable of transmitting light, wherein the organic EL display panel is disposed on a surface of the shading member, the surface being to face an operator during use of the shading member;
an image pickup device to pick up, as an image, a region which an opposite surface of the surface faces, and generate image pickup data; and
a switch to change light transmittance of the dimming glass plate, wherein
the organic EL display panel displays, thereon, an image based on the image pickup data;
the organic EL display panel comprises a plurality of subpixels, each one of the plurality of subpixels comprising a cathode and an anode;
the cathode and the anode are disposed with a gap between the cathode and the anode, the gap having a length different from a wavelength of light emitted from each one of the plurality of subpixels so that a micro-cavity effect is not utilized in each one of the plurality of subpixels;
the shading device further comprises:
a detector to detect a position of the shading member,
a control circuit to control the organic EL display panel to an OFF state when the light transmittance of the dimming glass plate is greater than or equal to a given reference value, and control an ON/OFF state of the organic EL display panel based on a result of detection of the detector when the light transmittance of the dimming glass plate is less than the given reference value, and
a sensor capable of detecting intensity of light, the sensor being provided on each of the surface and the opposite surface of the shading member; and wherein

the control circuit controls the organic EL display panel to the OFF state in a case where a difference in output between the sensor being provided on the surface of the shading member and the sensor being provided on the opposite surface of the shading member is smaller than a given reference value.

2. The shading device according to claim 1 , further comprising a first driver provided separately from the organic EL display panel to output a signal used to drive each one of the plurality of subpixels, wherein
the organic EL display panel comprises a substantially rectangular display screen, and
the first driver is disposed at a first edge portion of edge portions of the shading member, the first edge portion being along a longitudinal direction of the display screen and to be oriented to an upper side during use of the shading member.

3. The shading device according to claim 1 , further comprising a first driver provided separately from the organic EL display panel to output a signal used to drive each one of the plurality of subpixels, wherein
the organic EL display panel comprises a substantially rectangular display screen, and
the first driver is disposed at a second edge portion of edge portions of the shading member, the second edge portion being along a short edge direction of the display screen.

4. The shading device according to claim 1 , wherein the shading device is configured to display, with the organic EL display panel, a view being obstructed by the dimming glass plate when the dimming glass plate obstructs a light illuminating the shading member.

5. The shading device according to claim 1 , wherein the OFF state is a state in which the organic EL display panel is configured to display no image.

6. The shading device according to claim 1 , wherein
the organic EL display panel comprises a display portion on which the image is displayed; and
the display portion entirely overlaps with the dimming glass plate.

7. The shading device according to claim 1 , wherein
the plurality of subpixels comprises at least three subpixels that are for respective colors different from one another; and
in each of all subpixels in the plurality of subpixels, the cathode and the anode are disposed with the gap in which the micro-cavity effect is not utilized.

8. The shading device according to claim 1 , wherein
the plurality of subpixels comprises at least three subpixels that are for respective colors different from one another; and
the cathode and the anode are spaced from each other by substantially equal distance among the at least three subpixels.

Assignees

• Sakai Display Products Corp

Inventors

• Kishimoto Katsuhiko

Classifications

• B60J3/04 Primary

  adjustable in transparency · CPC title

• B60R1/10

  Front-view mirror arrangements; {(specially adapted for covering the peripheral part of the vehicle B60R1/002)}; Periscope arrangements {, i.e. optical devices using combinations of mirrors, lenses, prisms or the like (specially adapted for covering the peripheral part of the vehicle B60R1/002; for viewing traffic-lights B60R1/005); Other mirror arrangements giving a view from above or under the vehicle} · CPC title

• B60R2300/202

  displaying a blind spot scene on the vehicle part responsible for the blind spot · CPC title

• G02F2203/48

  Variable attenuator · CPC title

• G02F2203/11

  involving infrared radiation · CPC title