Vehicle display configuration and method of controlling a display

• US 20070182677A1
• Filed: 02/06/2006
• Published: 08/09/2007
• Est. Priority Date: 02/06/2006
• Status: Abandoned Application

• Current Assignee: Volkswagen Of America (Volkswagen AG)
• Original Assignee: Volkswagen Of America (Volkswagen AG)
• Inventors: Stoschek, Arne, Lee, Jonathan, Rosario, Daniel
• Application Number:
  US11/347,934
• Publication Number:
  US 20070182677A1
• Time in Patent Office: Days
• US Class Current: 345/82
• CPC Class Codes: H05B 45/10 Controlling the intensity of the light
• CPC Class Codes: H05B 45/30 Driver circuits

Abstract

A vehicle display configuration includes an LED (light emitting diode) display with a flexible circuit board and a plurality of LEDs mounted on the flexible circuit board. The flexible circuit board conforms to the surface shape of a mounting layer to which it is fastened. A control circuit which includes a driver circuit is operatively connected to the LEDs for controlling the LEDs. The driver circuit has a serial data input and a shift register. The driver circuit shifts data received via the serial data input into the shift register and controls the LEDs in accordance with the data in the shift register. A method of controlling a display is also provided.

Claims

1. A vehicle display configuration, comprising:

a mounting layer having a surface shape;

an LED display including a flexible circuit board and a plurality of LEDs mounted on said flexible circuit board;

said flexible circuit board conforming to said surface shape of said mounting layer;

a control circuit including a driver circuit operatively connected to said LEDs for controlling said LEDs;

said driver circuit having a serial data input and a shift register, said driver circuit shifting data received via said serial data input into said shift register; and

said driver circuit controlling said LEDs in accordance with the data in said shift register.

2. The vehicle display configuration according to claim 1, wherein said control circuit includes a microcontroller connected to said driver circuit for sending data to said serial data input of said driver circuit.

3. The vehicle display configuration according to claim 1, wherein said driver circuit is an integrated circuit mounted on said flexible circuit board.

4. The vehicle display configuration according to claim 1, wherein:

said driver circuit is a first driver circuit connected to a first group of said LEDs mounted on said flexible circuit board;

said control circuit includes a microcontroller and includes a second driver circuit connected to a second group of said LEDs mounted on said flexible circuit board;

said first driver circuit and said second driver circuit each have a serial data input, a serial data output and a shift register;

said serial data input of said first driver circuit is connected to said microcontroller for receiving data from said microcontroller;

said serial data input of said second driver circuit is connected to said serial data output of said first driver circuit for receiving data cascaded through said first driver circuit;

said first driver circuit and said second driver circuit respectively shift data received via said serial data input into said shift register; and

said first driver circuit and said second driver circuit respectively control said first group and said second group of said LEDs in accordance with the data in said shift register.

5. The vehicle display configuration according to claim 1, wherein said control circuit adjusts a brightness of said LEDs by switching said LEDs on and off in a recurring pattern.

6. The vehicle display configuration according to claim 1, wherein said flexible circuit board is coated with a protective material selected from the group consisting of polyurethane, acrylic, plastic, rubber and an electromagnetic interference shielding material.

7. The vehicle display configuration according to claim 1, including:

a liner material at least partially covering said LED display, said LEDs emitting light through said liner material; and

said liner material being selected from the group consisting of a vehicle roof liner material, a vehicle seat cover material, a vehicle interior panel material and a vehicle dashboard material.

8. The vehicle display configuration according to claim 1, wherein said flexible circuit board is fastened to said mounting layer with a fastening element selected from the group consisting of a retaining clip, a hook and loop fastener, and an adhesive.

9. The vehicle display configuration according to claim 1, wherein said mounting layer is translucent and said flexible circuit board includes translucent lead lines.

10. The vehicle display configuration according to claim 1, wherein said mounting layer is a vehicle component selected from the group consisting of a gear shifter, a door handle and a vehicle key.

11. The vehicle display configuration according to claim 1, including an electronic element selected from the group consisting of a push button and a sensor element mounted on said flexible circuit board.

12. The vehicle display configuration according to claim 1, wherein said flexible circuit board is configured to have no through-hole components mounted thereon.

13. A method of controlling a display, the method which comprises:

providing cycle periods and controlling an LED by switching the LED at each cycle period selectively into an on-state and an off-state;

providing N bits for controlling the on-state and the off-state of the LED, N being an integer greater than 2;

controlling the on-state and the off-state of the LED by repeatedly performing steps a) and b) starting with n=1 and increasing n by 1 until n=N;

a) selectively switching the LED into an on-state and an off-state in accordance with an n−

th one of the N bits; and

b) waiting for a time period corresponding to 2<sup>n−

1</sup> cycle periods.

14. The method of controlling a display according to claim 13, which comprises:

creating a recurring interrupt pattern waveform by continuously repeating the steps a) and b) for n=1 to n=N; and

using the recurring interrupt pattern waveform for continuously controlling the LED.