Display device, in particular for a motor vehicle

• US 9,229,229 B2
• Filed: 08/17/2012
• Issued: 01/05/2016
• Est. Priority Date: 08/18/2011
• Status: Expired due to Fees

• Current Assignee: Johnson Controls Technology Company (Johnson Controls International plc)
• Original Assignee: Johnson Controls Automotive Electronic (Johnson Controls International plc)
• Inventors: Hervy, Sbastien, Louviaux, Nicolas, Jolyvuillemin, Jean-Christophe
• Primary Examiner(s): Patel, Sanjiv D
• Application Number:
  US14/239,133
• Publication Number:
  US 20140354705A1
• Time in Patent Office: 1,236 Days
• US Class Current: 1/1
• CPC Class Codes: G02B 2027/0112 comprising device for genereting colour display
• CPC Class Codes: G02B 27/0101 characterised by optical features G02B27/0172 takes precedence
• CPC Class Codes: G09G 2320/062 Adjustment of illumination source parameters
• CPC Class Codes: G09G 2380/10 Automotive applications
• CPC Class Codes: G09G 3/18 using liquid crystals
• CPC Class Codes: G09G 3/3426 the different display panel areas being distributed in two dimensions, e.g. matrix

Abstract

A display device, in particular for a motor vehicle, includes a projection module and a reflection element, the reflection element being designed to at least partially reflect an image from the projection module in a normal direction of vision of a user of the display device. The display module is a monochrome display module. The display device has a display area of a display module. The display area comprises a first part of the display area, the display area comprises a second part of the display area, and the display device has at least one light source. The display device is designed to display a first symbol in the first part of the display area and a second symbol in the second part of the display area.

Claims

1. A display device, comprising:

a projection module; and

a reflection element, the reflection element being designed to at least partially reflect an image coming from the projection module in a normal direction of vision of a user of the display device,

the display device to have a display area of a display module,

the display module being a monochrome display module,

the display area comprising a first part of the display area,

the display area comprising a second part of the display area,

the display device having at least one light source,

wherein the display device comprises a first light source, and the display device comprises a second light source, the first light source back-lighting the first part of the display area, the second light source back-lighting the second part of the display area,

wherein the display device

is designed to display a first symbol in the first part of the display area, and in that the display device

is designed to display a second symbol in the second part of the display area,

the first symbol appearing, to the user of the display device, to have a first color, and

the second symbol appearing, to the user of the display device, to have a second color;

wherein at least one of the first light source or the second light source is designed to be capable of changing the color of the light emitted; and

wherein the display module is of the passive matrix type, wherein during a first time interval, the first symbol displayed in the first part of the display area has a first color and, during a second time interval, the first symbol in the first part of the display area is displayed having a second color, wherein the second color is different from the first color, wherein the first time interval and the second time interval are based on a condition represented by the first symbol.

2. The display device as claimed in claim 1, wherein the first part of the display area is the only place for the display of the first symbol, and the second part of the display area is the only place for the display of the second symbol.

3. The display device as claimed in claim 1, wherein the display module comprises, in the display area, a colored layer, the colored layer being provided, in the first display area, in a first color, and the colored layer being provided, in the second display area, in a second color.

4. The display device as claimed in claim 1, wherein the first light source and the second light source differ with respect to at least one of the color of the light emitted or the intensity of the light emitted.

5. The display device as claimed in claim 1, wherein at least one of the first light source or the second light source is designed to be capable of changing the intensity of the light emitted.

6. The display device as claimed in claim 5, wherein the first light source and the second light source differ with respect to the color of the light emitted and/or to the intensity of the light emitted.

7. The display device as claimed in claim 1, wherein the display device comprises a display module of the liquid crystal display (LCD) type.

8. The display device as claimed in claim 1, wherein the first part and/or the second part of the display area corresponds to at least one segment of the liquid crystal display module.

9. The display device as claimed in claim 1, wherein the display device comprises a display module of the matrix type.

10. The display device as claimed in claim 1, wherein the reflection element is an element positioned at a distance with respect to a windscreen of the motor vehicle.