Field emission light source and a related backlight device
AssigneeHon Hai Precision Industry Co., Ltd.
InventorGa-Lane Chen
Life of this patent
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Abstract
A light source (100) provided herein generally includes a substrate (110), a cathode (120), an isolating layer (122), a light-permeable anode (152), and at least one fluorescent layer (154). The substrate has a surface, and the cathode, with at least one solid electron emitter formed thereon, is located on the surface of the substrate. The isolating layer is formed on the cathode. The light-permeable anode faces the field emitters and is spaced from the cathode to form a vacuum chamber. The at least one fluorescent layer is formed on the anode. Such a light source can then be incorporated, e.g., into a backlight module (300) for an LCD device.
Claims17
A light source comprising:
- a substrate having a surface;
- a cathode with at least one substantially solid-cross-section electron emitter formed thereon, the cathode being located on the surface of the substrate, each electron emitter including an isolating post extending from the isolating layer and a nano-tip formed on a top end of the respective isolating post, the nano-tip being made of a material comprised of molybdenum;
- an isolating layer formed on the cathode;
- a light-permeable anode facing the field emitters and being spaced from the cathode to form a vacuum chamber;
- and
- at least one fluorescent layer formed on the anode.
A backlight device comprising:
- a light source comprising:
- a cathode;
- a plurality of substantially solid-cross-section field emitters located on the cathode, each electron emitter including an isolating post extending from the isolating layer and a nano-tip formed on a top end of the respective isolating post, the nano-tip being made of a material comprised of molybdenum;
- and
- a light-permeable anode arranged over and facing the field emitters;
- and
- a light guide plate having a portion thereof facing the light-permeable anode, the portion thereof facing the light-permeable anode being adapted for receiving light emitted from the light source.
Dependencies are inferred from the claim text.