Display

Patent metadata

Field	Value
Publication number	US-11175496-B2
Application number	US-201716096846-A
Country	US
Kind code	B2
Filing date	Apr 25, 2017
Priority date	Apr 26, 2016
Publication date	Nov 16, 2021
Grant date	Nov 16, 2021

Abstract

The invention relates to a display ( 1 ) comprising: an image generation unit comprising at least one light emitter ( 23 ), a printed circuit support plate ( 22 ), on which said emitter ( 23 ) is mounted, and a light sensor ( 30 ) capable of delivering a signal representative of a light intensity received by same, the display ( 1 ) being adapted in such a way that the luminosity of an image generated by the image generation unit is controlled as a function of said signal. According to invention, the light sensor ( 30 ) is mounted on said printed circuit support plate ( 22 ).

First claim

The invention claimed is:

1. A display comprising:
an image generation unit comprising at least one light emitter configured to be a light source for the image generation unit;
a printed circuit support plate, on which said emitter is mounted; and
a light sensor that delivers a signal representing a light intensity received thereby,
wherein the display is adapted so that a luminosity of an image generated by the image generation unit is controlled as a function of said signal,
wherein the printed circuit support plate comprises a plate made of thermally conductive material, on which an electrically insulating layer is applied, the electrically insulating layer being covered, opposite the plate made of thermally conductive material, with a connection layer at least partly formed by an electrically conductive material,
wherein the emitter and the light sensor are mounted on the connection layer, and
wherein the light sensor is mounted on said printed circuit support plate.

2. The display as claimed in claim 1 , further comprising a casing, said printed circuit support plate being located in an interior of the casing, the casing having an opening traversed by light radiation originating from outside the casing of the display in order to reach the light sensor.

3. The display as claimed in claim 2 , further comprising a light guide configured to collect said light radiation so that it can be guided up to the light sensor.

4. The display as claimed in claim 3 , wherein the light guide has an inlet face, in a vicinity of which said light radiation is collected, the inlet face of the light guide being located in the vicinity of said opening.

5. The display as claimed in claim 4 , wherein the casing has an outer face, the inlet face of the light guide being located in the vicinity of said outer face.

6. The display as claimed in claim 4 , wherein the casing has an outer face, the casing comprises a channel extending from said outer face toward the interior of the casing for the passage, toward an outside of the casing, of the light radiation emitted by the image generation unit, the inlet face of the light guide being located in the vicinity of a wall of this channel.

7. The display as claimed in claim 6 , comprising an optical projection assembly adapted to project the image generated by the image generation unit toward a semi-transparent strip, in order to form, with the semi-transparent strip, the image in a field of view of a user.

8. The display as claimed in claim 7 , wherein the light guide is distinct from the semi-transparent strip.

9. The display as claimed in claim 7 , wherein said outer face is located, relative to the interior of the casing, on a same side of the casing as the semi-transparent strip in an employed position.

10. The display as claimed in claim 1 , wherein said emitter comprises a light emitting diode.

11. The display as claimed in claim 1 , comprising a plurality of emitters disposed in line on the printed circuit support plate.

12. The display as claimed in claim 1 , adapted so that the luminosity of the generated image is greater, the greater than the light intensity received by said sensor.

Assignees

• Valeo Comfort & Driving Assistance

Inventors

• Delpierre Laurent
• Corduan Patrick
• Grandclerc François

Classifications

• H05K1/056

  the metal substrate being covered by an organic insulating layer · CPC title

• G02B2027/0118

  comprising devices for improving the contrast of the display / brillance control visibility · CPC title

• H05K1/0274

  Optical details, e.g. printed circuits comprising integral optical means (H05K1/0269 takes precedence; coupling light guides with opto-electronic components G02B6/42) · CPC title

• H05K2201/10106

  Light emitting diode [LED] · CPC title

• G02B27/0101 Primary

  characterised by optical features (G02B27/0172 takes precedence) · CPC title