Display device

Patent metadata

Field	Value
Publication number	US-9411181-B2
Application number	US-6730406-A
Country	US
Kind code	B2
Filing date	Sep 13, 2006
Priority date	Sep 21, 2005
Publication date	Aug 9, 2016
Grant date	Aug 9, 2016

Abstract

The present invention relates to a dual view display device where a display surface is divided into a first and a second sub-section ( 10 a , 10 b ). A backlighting arrangement is used which provides light with different angular distributions ( 16 a , 16 b ; 16 a ′, 16 b ′) to the different sub-sections. This allows at low cost e.g. in a vehicle the displaying of movies or computer game windows at a part of a display, which part is not visible for the driver of the vehicle.

First claim

The invention claimed is:

1. A display device for displaying different content in different viewing angles, comprising:
an LCD panel and a backlighting arrangement, wherein a first subsection of the LCD panel is arranged to display a first image and a second subsection of the LCD panel is arranged to display a second image, and the backlighting arrangement, at said first subsection, is arranged to emit light with a first angular distribution and at the second subsection is arranged to emit light with a second angular distribution which is different from the first angular distribution;
wherein the backlighting arrangement further comprises a lightguide, arranged to selectively emit light with the first or second angular distribution by selectively turning on or off a first light source and a second light source, the first light source being located at a first location and the second light source being located at a second location different from the first location so that the second angular distribution is different from the first angular distribution, a first controllable shutter, covering the first LCD panel sub-section and a second controllable shutter, covering the second LCD panel sub-section, and is arranged to emit, in a first mode, light with the first angular distribution while making the first shutter transmissive and the second shutter blocking, and, in a second mode, light with the second angular distribution while making the first shutter blocking and the second shutter transmissive.

2. A display device according to claim 1 , wherein the backlighting arrangement is arranged to emit, in a third mode, light with both angular distributions simultaneously, while making both shutters transmissive.

3. A display device according to claim 1 , wherein the backlighting arrangement is arranged to selectively emit light with a third angular distribution.

4. A display device according to claim 1 , wherein the backlighting arrangement comprises a lightguide arranged to emit light with the second angular distribution and comprises a first diffuser covering the first LCD panel sub-section and changing the angular distribution at that sub-section into the first angular distribution.

5. A display device according to claim 4 , wherein the first diffuser is controllable.

6. A display device according to claim 5 , wherein the backlighting arrangement comprises a second controllable diffuser, covering the second LCD panel sub-section.

7. A display device according to claim 1 , wherein the LCD panel has the format 16:9 and the second sub-section has the format 4:3, such that the division between the first and second sub-sections is accomplished by a vertical border.

8. A display device according to claim 1 , wherein the LCD panel has the format 4:3 and the second sub-section has the format 16:9, such that the division between the first and second sub-sections is accomplished by a horizontal border.

9. A display device according to claim 1 , wherein the display device is mounted in a vehicle, the first image is intended for the vehicle driver, and the second image is intended for a vehicle passenger.

Assignees

• Vissenberg Michel Cornelis Josephus Marie
• Ijzerman Willem Lubertus
• Binasch Gabriela
• Koninklijke Philips Nv

Inventors

• Vissenberg Michel Cornelis Josephus Marie
• Ijzerman Willem Lubertus
• Binasch Gabriela

Classifications

• B60K35/50

  Instruments characterised by their means of attachment to or integration in the vehicle (B60K35/231 takes precedence) · CPC title

• B60K35/81

  for controlling displays · CPC title

• B60K35/21

  using visual output, e.g. blinking lights or matrix displays · CPC title

• B60K35/22

  Display screens · CPC title

• B60K2350/903

  Operations & Transport · mapped topic