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Light emitting device and associated methods of manufacture

A technology of light-emitting device and fluorescent layer, which is applied in the direction of identification device, lighting device, light source, etc., can solve the problem that the optimal pixel brightness cannot be obtained.

Inactive Publication Date: 2009-05-27
TELEGEN CORP (US)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the LED 4 is circular, the illuminated area of ​​the pixel 2 (i.e. the sum of the circular radiation areas of the LED 4) is smaller than the area of ​​the pixel 2, so that the optimal pixel brightness cannot be obtained

Method used

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  • Light emitting device and associated methods of manufacture
  • Light emitting device and associated methods of manufacture
  • Light emitting device and associated methods of manufacture

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0040] figure 2A display system 8 is shown with a light-emitting display device 9 , which is shown schematically with nine pixels 7 and a display controller 11 . Each pixel 7 of the display device 9 has a light emitting device 6 which provides illumination for the pixel 7 . The display controller 11 has a plurality of device controllers 15 ( 1 -N), each device controller controlling one or more lighting devices 6 . Power source 13 provides power to display controller 11 , which distributes the power to device controller 15 . Each light emitting device 6 may be configured to emit light of a single color, or may be configured to emit light of a plurality of colors under the control of the device controller 15 . These light emitting devices may take the form of the light emitting devices described in the figures below.

[0041] image 3 A lighting device 10 is shown. The light emitting device 10 may for example constitute figure 2 The lighting device 6. The lighting devi...

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PUM

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Abstract

A light emitting device has an enclosure with a face portion, a cold cathode within the enclosure, a phosphor layer disposed on an interior surface of the face portion, an extracting grid between the cold cathode and the phosphor layer and a defocusing grid between the extracting grid and the phosphor layer. Electrons emitted from the cold cathode are defocused by the defocusing grid and impact the phosphor layer when an electric field is created between the cold cathode and the phosphor layer due to applied voltages at the cold cathode, extracting grid, defocusing grid and phosphor layer. The phosphor layer emits light through the face portion in response to electrons incident thereon. Secondary electron emission may also occur resulting in increased electron impact upon the phosphor layer, thereby increasing light output. A mirror layer may be included to reflect light toward the face portion of the light emitting device. The mirror layer also inhibits low energy electrons from impacting the phosphor, thereby enhancing the blink rate of the light emitting device.

Description

[0001] related application [0002] This application claims priority to US Provisional Application No. 60 / 637,069, filed December 16, 2004, the contents of which are incorporated herein by reference. Background technique [0003] Light sources used for displays such as advertising, signage, signaling, or signaling accidents are generally of two types: incandescent lamps and light emitting diodes (LEDs). Each of these two light sources has disadvantages that make it undesirable in certain applications. For example, while incandescent lights are easily made in a variety of colors and can emit bright light that can be seen from essentially any angle, incandescent lights generate a lot of heat compared to the quality of the light they emit. Thus, the heat generated by incandescent lamps wastes electrical power. [0004] Alternatively, LEDs generate relatively low heat compared to the light they emit, and thus use relatively less electrical power than incandescent lamps. However...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B37/00
CPCG09G1/00H01J63/02G09F9/30H01J63/06G09G3/22
Inventor 斯塔利尔·波波维奇
Owner TELEGEN CORP (US)