Ruggedized wearable display

• US 20150145839A1
• Filed: 02/11/2014
• Published: 05/28/2015
• Est. Priority Date: 11/27/2013
• Status: Active Grant

• Current Assignee: Universal Display Corporation
• Original Assignee: Universal Display Corporation
• Inventors: Hack, Michael, Ma, Ruiqing, Krall, Emory
• Granted Patent: US 9,390,649 B2
• Time in Patent Office: Days
• US Class Current: 345/207
• CPC Class Codes: G09G 2320/0626 for control of overall brightness
• CPC Class Codes: G09G 2320/0686 with two or more screen areas displaying information with different brightness or colours
• CPC Class Codes: G09G 2320/08 Arrangements within a display terminal for setting, manually or automatically, display parameters of the display terminal
• CPC Class Codes: G09G 2330/021 Power management, e.g. power saving
• CPC Class Codes: G09G 2360/144 the light being ambient light
• CPC Class Codes: G09G 2380/02 Flexible displays
• CPC Class Codes: G09G 3/3208 organic, e.g. using organic light-emitting diodes [OLED]
• CPC Class Codes: G09G 5/024 using colour registers, e.g. to control background, foreground, surface filling G09G5/06 takes precedence
• CPC Class Codes: H10K 2102/311 Flexible OLED

Abstract

A wearable, ruggedized device incorporating an OLED display is provided. The device is capable of operating in multiple modes, such as a lower-brightness and/or higher-contrast mode. The use of multiple modes allows for reduced power requirements, while providing responsiveness and continuous availability of the device to a user.

Claims

1. A wearable computing device comprising:

an organic light emitting device (OLED) curved to a radius of curvature of not more than 100 cm; and

a display controller configured to operate the OLED in a first mode and in a second mode;

wherein the display controller selectively changes the brightness of a first region of an emission spectrum of the OLED in the first mode relative to the second mode by a first relative amount, and changes the brightness of at least a second region of the emission spectrum of the OLED in the second mode relative to the first mode by a second relative amount different than the first relative amount.

2. The device of claim 1, further comprising an ambient light sensor configured to detect a brightness level of ambient light;

wherein the display controller is configured to operate the OLED in the first mode when the brightness level of ambient light is below a first threshold, and in the second mode when the brightness level of ambient light is above a first threshold.

3. The device of claim 1, wherein the device is ruggedized.

4. The device of claim 1, further comprising a sensor, wherein the display controller is configured to operate the OLED in one of the first mode and the second mode based upon a measurement made by the sensor.

5. The device of claim 4, wherein the sensor comprises at least one selected from the group consisting of:

an ambient light sensor, a motion sensor, and an orientation sensor.

6. The device of claim 5, wherein the sensor comprises an orientation sensor configured to detect a physical orientation of the device, and the controller is configured to operate the OLED in the first mode when the device is in a vertical orientation, and in the second mode when the device is in a horizontal orientation.

7. The device of claim 5, wherein the sensor comprises a motion detector, and the controller is configured to operate the OLED in the second mode responsive to a motion detected by the motion detector.

9. The device of claim 1, wherein the device is operable while immersed in water at a depth of at least 1 m.

10. The device of claim 1, wherein the device is operable at a luminance value of at least 700 cd/m² without exceeding an operating temperature increase of 26 C.

11. The device of claim 1, further comprising a ruggedization layer disposed over the OLED.

12. The device of claim 11, further comprising a thin film encapsulation layer disposed between the OLED and the ruggedization layer, wherein the thin film encapsulation layer is a single-layer barrier.

14. The device of claim 1, wherein the first region of the emission spectrum comprises a green region of the visible spectrum, and the second region of the emission spectrum comprises a red region of the spectrum, a blue region of the spectrum, or a combination thereof.

16. The device of claim 1, further comprising a circular polarizer disposed over the OLED.

20. The device of claim 1, further comprising a plurality of sensors, each sensor configured to measure at least one attribute selected from the group consisting of:

ambient brightness, ambient lighting conditions, motion, temperature, humidity, a presence of a toxic agent, and a health condition of a user of the device.

21. The device of claim 1, further comprising a wireless communication module.

23. The device of claim 1, further comprising a camera.

8. (canceled)

13. (canceled)

15. (canceled)

17-19. -19. (canceled)

22. (canceled)

24. A wearable computing device comprising:

an organic light emitting device (OLED) curved to a radius of curvature not more than 100 cm; and

a ruggedization layer curved to a radius of curvature of not more than 100 cm;

wherein the device is operable while immersed in water at a depth of at least 1 m.

25. The device of claim 24, wherein the device is operable at a luminance value of at least 700 cd/m² without exceeding an operating temperature increase of 26 C.

26. The device of claim 24, further comprising a thin film encapsulation layer disposed between the OLED and the ruggedization layer, wherein the thin film encapsulation layer is a single layer barrier.

28. The device of claim 24, further comprising a circular polarizer disposed over the OLED.

27. (canceled)