EL article clamping mould pressing piece
An insert molding and molding technology, which is applied in household components, electrical components, cabinets/boxes/drawer parts, etc., can solve the problems of increased number of processes and high cost
Inactive Publication Date: 2003-04-30
SEIKO PRECISION CO LTD +1
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- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
When the end coating treatment is performed in order to prevent short circuit, the number of processes increases, resulting in a problem of high cost
Method used
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Embodiment Construction
[0009] Preferred embodiments of the present invention will be described below with reference to the accompanying drawings.
[0010] figure 1 It is a sectional view showing the whole of the EL insert molding 1 . For example, in figure 1 A through-hole portion 1a serving as a through-hole for a liquid crystal display or a through-hole for operating a switch is formed in the front case of the shown mobile phone. Such as figure 2 As shown, the EL molded article 1 is produced in such a manner that a sheet in which the decorative film 2 and the EL element 3 are combined is inserted into a cavity of an injection molding machine (not shown), and molding resin is injected into The cavity of the back surface of the EL element 3 is formed to form the molded resin portion 4 .
[0011] The structure near the through-hole portion 1a of enlarged size is shown in figure 2 (a). First, the decorative film 2 will be described below. In the decorative film 2, a transparent film is formed...
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It is an object of the invention that an end face of a transparent electrode or a backside electrode of an EL element is not bared in an end surface of an outer periphery of an EL insert molding or an end surface of an inner periphery of a through hole portion and the end face of the transparent electrode or the backside electrode of the EL element does not short-circuit with arranged other members. To this end, a decorative film 2 is provided on a surface side, an EL element 3 is provided on a backside of the decorative film 2, molding resin is injected onto a backside surface of the EL element 3 to form a molding resin portion 4. An end potion of the decorative film 2 is provided to be shifted outwardly than an end portion of the EL element 3. The end portion of the EL element 3 is covered with the end portion of the decorative film 2 in a manner that the end portion of the decorative film 2 is bent in projection molding of molding resin. Difference between the end potion of the decorative film 2 and the end portion of the EL element 3 is set at a value larger than at least a thickness of the EL element 3. The and potion of the decorative film 2 and the end portion of the EL element 3 may be an end portion of a periphery of a through hole portion la provided in a molding.
Description
technical field [0001] The present invention relates to EL insert molded parts for mobile phones, mobile information terminals, electrical appliances, industrial equipment, audio equipment, and electrical components for automobiles and the like. Background technique [0002] In the prior art EL insert molding, for example, in the case where the prior art EL insert molding has a through-hole portion, die-cutting, punching, etc. are performed after the decorative film and the EL element are bonded together, The combined decorative film and EL element are inserted into a cavity of an injection molding machine, and an EL insert-molding is formed by injecting resin into the cavity. Contents of the invention [0003] In the EL element, an alternating electric field is applied between a laminated transparent electrode and a rear electrode to emit light. However, in the EL element formed by the above-mentioned conventional method, the end face of the transparent electrode or the ...
Claims
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IPC IPC(8): H05B33/10B29C45/14B29K101/00B29K105/20B29L31/34G09F13/04G09F13/22H05B33/02H05K5/02
CPCB29C45/14811B29C45/1418B29K2995/0036Y10T428/24777H05B33/02Y10T428/249924B29C45/14
Inventor 米田幸司斎藤淳直井泰史
Owner SEIKO PRECISION CO LTD