Head-up display system

• US 10,451,871 B2
• Filed: 12/29/2016
• Issued: 10/22/2019
• Est. Priority Date: 01/08/2016
• Status: Active Grant

• Current Assignee: Coretronic Corporation
• Original Assignee: Coretronic Corporation
• Inventors: Lee, Chun-Wei, Ni, Bai-Nan, Hsu, Chin-Hsiang
• Primary Examiner(s): Dzierzynski, Evan P
• Assistant Examiner(s): Oestreich, Mitchell T
• Application Number:
  US15/393,248
• Publication Number:
  US 20170199379A1
• Time in Patent Office: 1,027 Days
• Field of Search: 359630-633
• CPC Class Codes: G02B 2027/0118 comprising devices for improving the contrast of the display / brillance control visibility
• CPC Class Codes: G02B 2027/0145 creating an intermediate image
• CPC Class Codes: G02B 2027/0147 comprising a device modifying the resolution of the displayed image
• CPC Class Codes: G02B 27/01 Head-up displays
• CPC Class Codes: G02B 27/0101 characterised by optical features G02B27/0172 takes precedence

Abstract

A head-up display system includes a display unit and a reflective element. The display unit having a first and a second display areas includes a display panel, a first light source module, and a second light source module. The display panel has a first and a second pixel areas. The first and the second light source modules respectively provide a first and a second light sources. The first light source corresponds to the first pixel area to make the first display area display a first image frame. The second light source corresponds to the second pixel area to make the second display area display a second image frame. The reflective element is located on a transmission path of the first image frame and not located on a transmission path of the second image frame, and reflects the first image frame from the first display area to a target element.

Claims

1. A head-up display system, comprising:

a display unit, having a first display area and a second display area, and comprising;

a display panel, having a first pixel area and a second pixel area;

a first light source module, adapted to provide a first light source, the first light source being corresponded to the first pixel area to make the first display area display a first image frame; and

a second light source module, adapted to provide a second light source, the second light source being corresponded to the second pixel area to make the second display area display a second image frame; and

a reflective element, located on a transmission path of the first image frame and not located on a transmission path of the second image frame, and adapted to reflect the first image frame from the first display area to a target element;

a shell, having a first surface, a second surface at opposite sides and an accommodating space caved in a direction from the second surface to the first surface; and

a shielding member, disposed on the first surface of the shell and the second surface of the shell faces towards the display unit,

wherein the reflective element is located in the accommodating space and disposed on the second surface of the shell, and

wherein the shielding member includes an opening separated from the accommodating space by a sidewall of the shielding member, and the second image frame displayed by the second display area in the display unit is projected to the projection target through the opening.

2. The head-up display system of claim 1, wherein the first display area is not overlapping with the second display area, and the first display area is coplanar with the second display area.

3. The head-up display system of claim 1, wherein the second display area of the display unit is a dashboard display panel.

4. The head-up display system of claim 1, wherein the first light source module and the second light source module are a first backlight module and a second backlight module respectively, the first pixel area is located on a transmission path of the first light source provided by the first backlight module, the second pixel area is located on a transmission path of the second light source provided by the second backlight module, and the first pixel area is coplanar with the second pixel area.

5. The head-up display system of claim 1, wherein the first light source module is one selected from a direct type backlight module, a side incident type backlight module and a hybrid type backlight module, and the second light source module is one selected from the direct type backlight module, the side incident type backlight module and the hybrid type backlight module.

6. The head-up display system of claim 1, wherein the first light source module has a plurality of first organic light emitting diode units, the second light source module has a plurality of second organic light emitting diode units, the first organic light emitting diode units are corresponded to a plurality of first pixel units in the first pixel area respectively, and the second organic light emitting diode units are corresponded to a plurality of second pixel units in the second pixel area respectively.

7. The head-up display system of claim 1, further comprising:

a combiner element, serving as the target element, configured to receive the first image frame from the reflective element, and adapted to combine the first image frame and an ambient beam and project the first image frame from the reflective element and the ambient beam to a projection target.

8. The head-up display system of claim 1, wherein the target element comprises a windshield of a vehicle.

9. The head-up display system of claim 1, wherein a luminance of the first light source module is not equal to a luminance of the second light source module.

10. The head-up display system of claim 1, wherein a luminance of the first light source module is substantially 13000 nits, and a luminance of the second light source module is substantially between 800 and 1000 nits.

11. The head-up display system of claim 1, wherein a luminance of the first light source module is substantially equal to a luminance of the second light source module.

12. The head-up display system of claim 1, wherein a viewing angle of the first light source module is not equal to a viewing angle of the second light source module.

13. The head-up display system of claim 1, wherein a viewing angle of the first light source module in vertical direction is substantially 26 degrees, a viewing angle of the first light source module in horizontal direction is substantially 44 degrees, a viewing angle of the second light source module in vertical direction is substantially 45 degrees, and a viewing angle of the second light source module in horizontal direction is substantially 45 degrees.

14. The head-up display system of claim 1, wherein a viewing angle of the first light source module is substantially equal to a viewing angle of the second light source module.

15. A head-up display system, comprising:

a display unit, having a first display area and a second display area, and comprising;

a display panel, having a first pixel area and a second pixel area, wherein the display panel is a thin film transistor liquid crystal display;

a first light source module, adapted to provide a first light source, the first light source being corresponded to the first pixel area to make the first display area display a first image frame; and

a second light source module, adapted to provide a second light source, the second light source being corresponded to the second pixel area to make the second display area display a second image frame, wherein the size of the first light source module is smaller than the size of the second light source module;

a reflective element, located on a transmission path of the first image frame and not located on a transmission path of the second image frame, and adapted to reflect the first image frame from the first display area to a target element;

a heat sink, disposed on the first light source module to facilitate heat dissipation for the first light source module; and

a shell, adapted to carry the reflective element, and the display panel is located between the heat sink and the shell, wherein the shell does not directly connect to the heat sink.