Wide color-gamut vehicle infotainment display system

• US 10,725,227 B2
• Filed: 05/27/2016
• Issued: 07/28/2020
• Est. Priority Date: 05/29/2015
• Status: Active Grant

• Current Assignee: Harman International Industries Incorporated (Samsung Electronics Co. Ltd.)
• Original Assignee: Harman International Industries Incorporated (Samsung Electronics Co. Ltd.)
• Inventors: Rao, Rashmi, Auger, Elijah
• Primary Examiner(s): Sheng, Xin
• Application Number:
  US15/570,741
• Publication Number:
  US 20180292591A1
• Time in Patent Office: 1,523 Days
• Field of Search: None
• CPC Class Codes: B60K 2360/188 Displaying information using colour changes
• CPC Class Codes: B60K 2360/25 using filters
• CPC Class Codes: B60K 2360/331 Electroluminescent elements
• CPC Class Codes: B60K 35/00 Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
• CPC Class Codes: B60K 35/29 Instruments characterised by the way in which information is handled, e.g. showing information on plural displays or prioritising information according to driving conditions
• CPC Class Codes: G02B 6/005 provided by one optical element, or plurality thereof, placed on the light output side of the light guide
• CPC Class Codes: G02F 1/133514 Colour filters
• CPC Class Codes: G02F 1/133609 including means for improving the color mixing, e.g. white
• CPC Class Codes: G02F 1/133614 using photoluminescence, e.g. phosphors illuminated by UV or blue light
• CPC Class Codes: G02F 1/13362 providing polarized light, e.g. by converting a polarisation component into another one
• CPC Class Codes: G02F 1/133624 characterised by their spectral emissions
• CPC Class Codes: G09G 2330/026 Arrangements or methods related to booting a display
• CPC Class Codes: G09G 2380/10 Automotive applications
• CPC Class Codes: G09G 3/3413 Details of control of colour illumination sources
• CPC Class Codes: G09G 3/3607 for displaying colours or for displaying grey scales with a specific pixel layout, e.g. using sub-pixels display of colours in flat matrix panels other than liquid crystal displays G09G3/2003; grey scales specific for television H04N3/127

Abstract

The various embodiments set forth a display device that includes a liquid crystal module, a nano-particle semiconductor material, and a light source that includes a blue light-emitting diode configured to generate a blue output light. The nano-particle semiconductor material is configured to receive the blue output light, convert a first portion of the blue output light to a green light emission, convert a second portion of the blue output light to a red light emission, and transmit a remainder portion of the blue output light. The liquid crystal module is configured to receive the green light emission, the red light emission, and the remainder portion of the blue output light and generate an image that includes a portion of the green light emission, a portion of the red light emission, and a portion of the remainder portion of the blue output light.

Claims

1. A display device, comprising:

a light source that includes a blue light-emitting diode (LED) configured to generate a blue output light;

a nano-particle semiconductor material configured to;

receive the blue output light,

convert a first portion of the blue output light to a green light emission,

convert a second portion of the blue output light to a red light emission, and

transmit a remainder portion of the blue output light;

a polarizing filter positioned between the light source and the nano-particle semiconductor material;

a liquid crystal module configured to receive the green light emission, the red light emission, and the remainder portion of the blue output light and generate an image that includes a portion of the green light emission, a portion of the red light emission, and a portion of the remainder portion of the blue output light, wherein the nano-particle semiconductor material is positioned between the polarizing filter and the liquid crystal module; and

a color filter assembly disposed within the display device to receive the red light emission, the green light emission, and the remainder portion of the blue output light, wherein the color filter assembly is configured with a first passband that is configured based on a peak wavelength of the red light emission, a second passband that is configured based on a peak wavelength of the green light emission, and a third passband that includes a peak wavelength of the remainder portion of the blue output light.

2. The display device of claim 1, wherein the color filter assembly is disposed in an optical path between the nano-particle semiconductor material and the liquid crystal module.

3. The display device of claim 1, further comprising a color subpixel array that includes a plurality of red filters to define a color of red subpixels of the liquid crystal module, a plurality of green filters to define a color of green subpixels of the liquid crystal module, and a plurality of blue filters to define a color of blue subpixels of the liquid crystal module.

4. The display device of claim 3, wherein a color of red filters included in the color subpixel array is based at least in part on the first passband, a color of green filters included in the color subpixel array is based at least in part on the second passband, and a color of blue filters included in the color subpixel array is based at least in part on the third passband.

5. The display device of claim 3, wherein the color subpixel array is included in the liquid crystal module.

6. The display device of claim 1, wherein the nano-particle semiconductor material includes at least one of quantum dots or quantum rods.

7. The display device of claim 1, wherein in combination, the red light emission, the green light emission, and the remainder portion of the blue output light produce a white light substantially equivalent to International Commission on Illumination (CIE) Standard Illuminant D65.

8. A vehicle infotainment system, comprising:

a processor configured to generate digital images; and

a display device for displaying the digital images that includes;

a light source that includes a blue light-emitting diode (LED) configured to generate a blue output light;

a nano-particle semiconductor material configured to receive the blue output light and convert a portion of the blue output light to a different color light and transmit a remainder portion of the blue output light;

a polarizing filter positioned between the light source and the nano-particle semiconductor material;

a liquid crystal module configured to receive the different color light and the remainder portion of the blue output light and generate an image that includes a portion of the different color light and a portion of the remainder portion of the blue output light, wherein the nano-particle semiconductor material is positioned between the polarizing filter and the liquid crystal module; and

a color filter assembly disposed within the display device to receive the different color light and the remainder portion of the blue output light, wherein the color filter assembly is configured with a first passband that is configured based on a peak wavelength of the different color light and a second passband that is configured based on a peak wavelength of the remainder portion of the blue output light.

9. The vehicle infotainment system of claim 8, wherein the nano-particle semiconductor material is configured to convert the portion of the blue output light to a green light emission and a red light emission.

10. The vehicle infotainment system of claim 8, wherein the processor is further configured to:

receive a wake-up signal from an electronic control module of a vehicle; and

cause the display device to power on.

11. The vehicle infotainment system of claim 10, wherein the electronic control module of the vehicle generates the wake-up signal in response to an actuator associated with the vehicle activating the electronic control module.

12. The vehicle infotainment system of claim 11, wherein the actuator activates the electronic control module by implementing a remote keyless entry protocol or engaging an ignition switch of the vehicle.

13. The vehicle infotainment system of claim 8, wherein the different color light includes a red light emission and a green light emission.

14. The vehicle infotainment system of claim 13, wherein the peak wavelength of the different color light comprises a peak wavelength of the red light emission, and wherein the color filter assembly is further configured with a third passband that is configured based on a peak wavelength of the green light emission.

15. The vehicle infotainment system of claim 8, wherein the color filter assembly is disposed in an optical path between the nano-particle semiconductor material and the liquid crystal module.

16. The vehicle infotainment system of claim 8, further comprising a color subpixel array that includes a plurality of red filters to define a color of red subpixels of the liquid crystal module, a plurality of green filters to define a color of green subpixels of the liquid crystal module, and a plurality of blue filters to define a color of blue subpixels of the liquid crystal module.

17. The vehicle infotainment system of claim 16, wherein a color of red filters included in the color subpixel array is based at least in part on the first passband and a color of blue filters included in the color subpixel array is based at least in part on the second passband.

18. The vehicle infotainment system of claim 8, wherein the nano-particle semiconductor material includes at least one of quantum dots or quantum rods.