摘要:
The invention provides an electronic apparatus having a metal core substrate including a metal plate, an insulating layer formed on the metal plate and a conductive layer formed on the insulating layer, and an electronic part, and to which the conductive layer and a terminal of the electronic part are connected. In the electronic apparatus, a member having a high thermal conductivity is arranged so as to be in contact with both of the metal plate and the electronic part. Accordingly, a heat radiating property of the electronic apparatus is increased.
摘要:
A plasma display panel driving system and method for a display panel having a first common electrode and first independent electrodes arranged at a back plate side, a second common electrode and second independent electrodes arranged at a face plate side, an inner partition positioned between the first common and independent electrodes at the back plate side and the second common and independent electrodes at the face plate side and having an aperture therein connecting a space at the back plate side and a space at the face plate side, and a fluorescent layer arranged in the space at the face plate side. The driving system and method includes a driver for driving the first and second independent and common electrodes through a full writing period, a front surface erasing period, a writing period, and a discharge sustaining period, including supplying a first full writing pulse to the first common electrode at the back plate side and a second full writing pulse having a polarity which is opposite to the polarity of the first full writing pulse to the first independent electrodes at the back plate side for causing discharge between the first common and independent electrodes in the full writing period.
摘要:
In order to reduce the address voltage in a gas discharge type display pane, the address electrodes in the display panel are formed on the barrier ribs. Further, a fluorescent layer is coated on the wall surface of the barrier ribs thereby suppressing erroneous light emission or degradation of the fluorescent layer during address discharge.
摘要:
A gas discharge display panel in which opaque bus electrodes are structured in a frame shape for making each display cell clear as viewed from outside of the front substrate, and the bus electrodes function as a black matrix of the display screen. Hence the integrity of the black display status is improved and the contrast is increased.
摘要:
A gas discharge display panel which provides sufficient contrast and good accuracy and is high in yield. When a voltage is applied to auxiliary discharge electrodes, auxiliary discharge occurs in an auxiliary discharge space and excited charged particles communicate with a main discharge space through a priming path made in a discharge space separation bulkhead. In this state, when an alternating voltage is applied between bus electrodes on a front substrate, main discharge occurs in the main discharge space, causing Xe atoms in the sealed gas to generate ultraviolet rays, causing a phosphor to emit light. However, since the auxiliary discharge is shielded by a bulkhead and a barrier rib, the phosphor does not emit light when only auxiliary discharge occurs.
摘要:
A ceramic multilayer circuit board comprising ceramic layers and wiring conductor layers laminated alternately, in which the ceramic layer has a thermal expansion coefficient lower than that of the wiring conductor and not lower than one half of that of the conductor layer and is formed from a glass which softens at a temperature not higher than the melting point of the wiring conductor layer; a semiconductor module having a high reliability in its solder joint part comprising said ceramic multilayer circuit board mounted with a ceramic carrier substrate being mounted with a semiconductor device, said board being able to use a silver or copper conductor having a good electro-conductivity; and an amorphous glass powder for said ceramic multilayer circuit board.
摘要:
This invention provides a ceramic multi-layer circuit board wherein electroconductive patterns and ceramic insulating layers are piled alternately, characterized in that each ceramic insulating layer is a sintered product comprising one or more kinds of silica and a glass. Since the glass has a softening point lower than the melting point of the material of the electroconductive patterns, it enables sintering of the ceramic multi-layer circuit board at low temperatures. The silica is effective for reduction of the dielectric constant of each ceramic insulating layer.
摘要:
Ceramic insulating substrate layers (1) for a multilayered ceramic wiring circuit board (3) consist essentially of crystals of mullite and sillimanite, non-crystalline silicon dioxide occupying the interstices between the crystals and magnesium oxide dissolved substantially in the crystals in solid solution and have a thermal expansion coefficient of 40-60.times.10.sup.-7 /.degree. C. and a dielectric constant below 6.7.
摘要:
A ceramic insulating layer (2) for the multilayer ceramic circuit board (11) consists of 60 wt % of crystallized glass and 40 wt % of a filler such as silicon dioxide bonded by the crystallized glass, which consists of 6-15 wt % of lithium oxide, 70-90 wt % of silicon dioxide, 1-8 wt % of aluminum oxide, 1-5 wt % of alkaline metal oxide other than lithium oxide and 2-5 wt % of alkaline earth metal oxide. The sintered ceramic insulating layer (2) has a dielectric constant below 6.1 and a flexural strength above 150 MPa and is co-firable with a wiring conductor layer of such as gold, silver and copper.