Field Emission Lamp Electrode Assembly Segmentation
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Solution Overview
Problem
The manufacturing of field emission lamps without mercury is challenging due to the difficulty in assembling electrodes at the same end of the lamp, which complicates the manufacturing process.
Innovation Solution
A field emission lamp design with a housing having separate supporting elements for the first and second electrodes, where the first electrode includes an electron emitter and electric conduction element fastened to one end, and the second electrode includes a fluorescent layer and electric conduction element fastened to the opposite end, simplifying the assembly by allowing the electrodes to be connected at different ends of the housing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the cathode and anode are disposed at the same end of the field emission lamp, then the lamp structure is compact, but the manufacturing process becomes difficult and complex
Solution Approach 1:
The patent divides the electrode assembly into two separate parts: a first electrode (cathode with electron emitter) fastened to the first supporting element, and a second electrode (anode with fluorescent layer) fastened to the second supporting element. This segmentation allows each electrode to be independently assembled and positioned at different ends of the housing, simplifying the manufacturing process while maintaining a compact overall structure.
Solution Approach 2:
The patent transitions from a two-dimensional arrangement where both electrodes are at the same end to a three-dimensional arrangement where electrodes are distributed along the length of the housing. The first electrode is fastened to the first supporting element at one end, while the second electrode is fastened to the second supporting element at the opposite end, utilizing the longitudinal dimension to simplify assembly.
2Length of stationary object
If the electrodes are disposed at the same end, then the lamp size is reduced, but the assembly process becomes complicated
Solution Approach 1:
The electrode system is segmented into independently assembly units: the first electrode assembly (electron emitter + first electric conduction element) and the second electrode assembly (fluorescent layer + second electric conduction element). Each assembly can be prepared and tested separately before final integration, reducing assembly complexity while maintaining compact lamp dimensions.
Solution Approach 2:
The first electric conduction element is preliminarily fastened to the first supporting element, and the second electric conduction element is preliminarily fastened to the second supporting element, before final assembly. This preliminary action allows for pre-positioning and pre-testing of electrical connections, simplifying the final assembly process.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This design simplifies the manufacturing process by allowing easier assembly and operation of the field emission lamp, enabling efficient light emission when a voltage is applied between the electrodes, resulting in effective illumination.
Implementation Method 1
Field emission lamp without mercury as an alternative light source for backlight devices is also available. This type of field emission lamp includes a cathode and an anode disposed opposite to each other. An electron emitting layer is disposed on the cathode. When a predetermined voltage is applied between the cathode and the anode, electrons emitted from the electron emitting layer collide against the fluorescent layer, thereby generating visible light.
Implementation Method 2
The second electrode includes an electric conduction membrane, a fluorescent layer and a second electric conduction element. The fluorescent layer is disposed on the electric conduction membrane and corresponding to the electron emitter.
Data Source
AI summary
A field emission lamp (2) includes a housing (20), a first electrode (22), and a second electrode (24). The housing (20) includes a first supporting element (201) and a second supporting element (202). The first supporting element (201) is disposed at one end of the housing (20). The second supporting element (202) is disposed at opposite end of the housing (20). The first electrode (22) includes an electron emitter (222) and a first electric conduction element (224) electrically connected with the electron emitter (222). The first electric conduction element (224) is fastened to the first supporting element (201). The second electrode (24) includes an electric conduction membrane (241), a fluorescent layer (242) and a second electric conduction element (243). The fluorescent layer (242) is disposed on the electric conduction membrane (241) and corresponding to the electron emitter (222). The second electric conduction element (243) is electrically connected with the electric conduction membrane (241) and is fastened to the second supporting element (202).