Claims
- 1. A backlight device comprising:a backlighting element for illuminating the back of visually presenting means of a device; and drive control means for intermittently driving said backlighting element at an appropriate frequency for illuminating said visually presenting means, wherein said frequency is chosen low enough or a period of said frequency is short enough such that some visible flickering of said illumination is permitted for reducing power consumption.
- 2. The backlight device of claim 1 further comprising a light storage member for storing light energy from one or more of light emitted from said backlighting element and natural light; said light storage member also for spontaneously emitting light.
- 3. A backlight device comprising:a backlighting element for illuminating the back of visually presenting means of a device; drive control means for intermittently driving said backlighting element at appropriate times for illuminating said visually presenting means; and a light storage member including a metallic compound containing a rare-earth metal, said light storage member for storing light energy from one or more of light emitted from said backlighting element and natural light; said light storage member also for spontaneously emitting light.
- 4. The backlight device of claim 3, wherein said drive control means drives said backlighting element such that said visually presenting means is primarily illuminated by said backlighting element for some time periods and further wherein said visually presenting means is primarily illuminated by said light storage member for some other time periods.
- 5. The backlight device of claim 4, wherein said some other time periods are interspersed among said some time periods, such that a user perceives a nearly continuous illumination of said visually presenting means.
- 6. The backlight device of claim 3, wherein said light storage member at least partially illuminates said visually presenting means.
- 7. A radio communication device comprising:a radio processing unit; a control unit; and a backlight device including: a backlighting element for illuminating the back of visually presenting means of a device; drive control means for intermittently driving said backlighting element at appropriate times for illuminating said visually presenting means; and a light storage member including a metallic compound containing a rare-earth metal, said light storage member for storing backlight from one or more of said light emitting means of said backlighting element and natural light; said light storage member also for spontaneously emitting light.
- 8. The radio communication device of claim 7, wherein said control unit stops the drive control means from driving said backlighting element when said radio processing unit is processing a radio communication.
- 9. The radio communication device of claim 7, wherein said drive control means drives said backlighting element such that said visually presenting means is primarily illuminated by said backlighting element for some time periods and further wherein said visually presenting means is primarily illuminated by said light storage member for some other time periods.
- 10. The radio communication device of claim 9, wherein said some other time periods are interspersed among said some time periods, such that a user perceives a nearly continuous illumination of said visually presenting means.
- 11. The radio communication device of claim 7, wherein said light storage member at least partially illuminates said visually presenting means.
- 12. A radio communication device comprising:a radio processing unit; a control unit; and a backlight device including: a backlighting element for illuminating the back of visually presenting means of a device; and drive control means for intermittently driving said backlighting element at appropriate times for illuminating said visually presenting means; wherein said control unit stops said drive control means from driving said backlighting element when said radio processing unit is processing a radio communication.
- 13. The radio communication device of claim 12, wherein said backlight device further includes a light storage member for storing backlight from one or more of said light emitting means of said backlighting element and natural light; said light storage member also for spontaneously emitting light.
- 14. The radio communication device of claim 13, wherein said drive control means drives said backlighting element such that said visually presenting means is primarily illuminated by said backlighting element for some time periods and further wherein said visually presenting means is primarily illuminated by said light storage member for some other time periods.
- 15. The radio communication device of claim 14, wherein said some other time periods are interspersed among said some time periods, such that a user perceives a nearly continuous illumination of said visually presenting means.
- 16. A backlight device comprising:a backlighting element for illuminating the back of visually presenting means of a device; drive control means for intermittently driving said backlighting element at appropriate times for illuminating said visually presenting means; and a light storage member including a film containing a light-storage material incorporated therein, said light storage member for storing light energy from one or more of light emitted from said backlighting element and natural light; said light storage member also for spontaneously emitting light.
- 17. A backlight device comprising:a backlighting element for illuminating the back of visually presenting means of a device; drive control means for intermittently driving said backlighting element at appropriate times for illuminating said visually presenting means; and a light storage member including a light-storage material incorporated in a sealing resin, said light storage member for storing light energy from one or more of light emitted from said backlighting element and natural light; said light storage member also for spontaneously emitting.
Priority Claims (1)
Number |
Date |
Country |
Kind |
10-240512 |
Aug 1998 |
JP |
|
Parent Case Info
This application is a division of application Ser. No. 09/363,724, filed on Jul. 29, 1999.
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