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公开(公告)号：JPH11120918A
公开(公告)日：1999-04-30
申请号：JP22520198
申请日：1998-07-27
Applicant: PIXTECH SA
Inventor： MOUGIN STEPHANE , CHASSAGNE PASCAL
Abstract: PROBLEM TO BE SOLVED: To provide a method for assembling two parallel plates containing a closed internal space in a furnace kept at the vacuum state or in the neutral atmosphere, optimizing the removal of the gas discharged in a screen, and suitable for batch processing. SOLUTION: In the first stage, a first seal 5 melted at the first temperature T1 is used to seal the periphery, and an opening is maintained by at least one of openings 13, 13' communicated with an internal space. The opening is closed by a closing part 14 having the insertion of a second seal 15 melted at the second temperature T2 lower than the first temperature T1.
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公开(公告)号：JPH1125889A
公开(公告)日：1999-01-29
申请号：JP19360298
申请日：1998-06-25
Applicant: PIXTECH SA
Inventor： MOUGIN STEPHANE , RIVIERE CAZAUX LIONEL
Abstract: PROBLEM TO BE SOLVED: To prevent the decrease of the emission rate of a microchip by ion pumping by providing on a cathode side, a sacrificial region of an electron- emitting microchip which is addressable independently from an active region. SOLUTION: A cathode 1 is placed opposite to an anode for cathode emission, and an electron-emitting microchip 2 is deposited on a cathode conductor 7 formed in plural line. A main grid 3 is made by an electroconductive layer formed in a line perpendicular to a cathode conductor row. The cathode 1 contains a sacrificial microchip 2' in a sacrificial region, individually addressable from a line 7 by using an additional electrode 7'. This region is engaged with a sub-grid 3' individually addressable from the line of the main grid 3. In order to improve the degree of vacuum in a space 11 between electrodes, the sacrificial microchip 2' is addressed when a screen is completed, and ion pumping is carried out. It is preferable to repeat this process, even after using the screen to regenerate the vacuum for next usage.
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公开(公告)号：JPH10326584A
公开(公告)日：1998-12-08
申请号：JP12158098
申请日：1998-03-27
Applicant: PIXTECH SA
Inventor： JAEGER AXEL , TORRENT CHRISTIAN
Abstract: PROBLEM TO BE SOLVED: To provide practically even screen luminance from one row to other rows by providing a line-to-line conductive track, and canceling a possible lateral electric field between plural rows of two adjacent cathode conductors having a different electrical potential. SOLUTION: A cathode 1' is divided into plural lines 15, and engaged with a grid 3, which is deposited on an insulating layer 21 and which is divided into plural lines. A grid conductive layer 3 and the insulating layer 21 are opened at a position of a microchip 2, and each picture element, which is regulated by each intersection of the plural lines 15 of the cathode 1' and the lines of the grid 3, is provided with several thousands microchips 2. A line-to-line conductive track 22 is deposited on a glass substrate 10 by an interposed material between the lines 15 of the cathode 1', and connected to one end of each other by a track 23. With this structure, the line-to-line conductive track 22 is biassed to a nearly equal electrical potential to the minimum biassing electrical potential of the lines 15 of the cathode 1'.
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公开(公告)号：JPH08236047A
公开(公告)日：1996-09-13
申请号：JP27207295
申请日：1995-09-27
Applicant: PIXTECH SA
Inventor： PEYRE JEAN-FRANCOIS , COURREGES FRANCIS
Abstract: PROBLEM TO BE SOLVED: To prevent the generation of a destructive electric arc between adjacent strips of an anode and restrain a decrease in screen brightness by providing a particular structure in the anode for a flat display screen. SOLUTION: In an anode of such type containing at least one group of phosphor strips (r, g, b) disposed on conductive strips 9r, 9b, 9g and at least one of conductors 21r, 21g, 21b for phosphor strips linked with each other, the conductive strips 9r, 9g, 9b are linked with each other through resistors 22r, 22g, 22b disposed in series between conductors 21r, 21g, 21b associated therewith and linked with each other.
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公开(公告)号：JP2002231126A
公开(公告)日：2002-08-16
申请号：JP2001389100
申请日：2001-12-21
Applicant: PIXTECH SA
Inventor： BOURCHEIX CHRISTOPHE
IPC: H01J9/02
Abstract: PROBLEM TO BE SOLVED: To accurately dispose the openings of extracted grids and collected grids formed on the upper surface of a cathode. SOLUTION: This production method for a structure comprises the steps of forming, on a substrate, a first insulation layer, a first metal-covered layer, a second insulation layer, and a second metal-covered layer stacked each other, forming a first window corresponding to the profile of a first opening and a second window having an external profile corresponding to the internal profile of a second opening on the second metal-covered layer and the second insulation layer, forming a third window larger than the first window in a masking layer, etching the first metal-covered layer in the first window, removing the second metal-covered layer under the masking layer to the inner periphery of the second window, etching the first insulation layer by a selected distance and removing the second insulation layer in the profile line of the second window, and removing the masking layer.
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Patent Agency Ranking
公开(公告)号：JP2000163006A
公开(公告)日：2000-06-16
申请号：JP32802799
申请日：1999-11-18
Applicant: PIXTECH SA
Inventor： BANCAL BERNARD
Abstract: PROBLEM TO BE SOLVED: To improve a sense of an illumination level by a human as to a dark level by receiving a digital illumination instruction while a 1st electrode addresses a 2nd orthogonal electrode and making light emission intensity not constant while the 2nd electrode is addressed. SOLUTION: For the time t1 when the 1st electrode of the plane display screen addresses the 2nd orthogonal electrode, the digital illumination signal which is applied and sets pulse width is received and for the time when the 2nd electrode is addressed, the light emission intensity is made not constant. The illuminance of emitted light is not constant while the screen electrode which is scanned, line by line, is addressed. Namely, a discharging current is not constant for a line time, which therefore corresponds to variation in the intensity of the current for the address specification time of, for example, a grid line in case of a microchip screen, so that the light emission intensity can be varied.
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公开(公告)号：JPH11327455A
公开(公告)日：1999-11-26
申请号：JP8358799
申请日：1999-03-26
Applicant: PIXTECH SA
Inventor： FRAYSSINET THIERRY
Abstract: PROBLEM TO BE SOLVED: To suppress the risk of the leakage between the inside and the outside of a screen which are connected to crossings of grid conductors being under a sealing wall by allowing the grid conductors to include opening operation structures performing their expansions and contractions easily and providing nonlinear conductive parts at electric contact parts. SOLUTION: Grid rows 10 perform opening operations in order to enable expansions and contractions for the gird rows in stead of becoming crossing solid bodies in the lower part of a screen sealing wall 7. As a result, stresses to be imparted on them become minimum. Consequently, in their length parts 30, the grid rows 10 express dispersed openings 31 in order to form nets and the grid rows compensate electric conductions on either of sides of the seal 7. Patterns of the openings 31 formed in areas 30 of the grid rows 10 become so that the rows 10 do not have either of linear conductive parts and the rows perform the compensations in the normal direction of their legths or their widths. Thus, stress propagations which are apt to be developed in the grid rows 10 being the upper part of the sealing wall 7 are more reduced.
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公开(公告)号：JPH11191358A
公开(公告)日：1999-07-13
申请号：JP28866698
申请日：1998-09-28
Applicant: PIXTECH SA
Inventor： BANCAL BERNARD , PEYRE JEAN-FRANCOIS , PEYRON PHILIPPE
Abstract: PROBLEM TO BE SOLVED: To simplify the structure of an amplifier to be addressed by providing a grid suitable to be successively addressed and connecting a return electrode suitable to independently and simultaneously address thereto through a resistance element. SOLUTION: Each control amplifier 21 is connected between grid lines 14 corresponding to a high address voltage +Vg so as to be independently and successively addressable. Each transistor P is controlled by a 2-state signal C, and the grid line 14 is addressed when the signal C is in a potential sufficiently lower than the potential +Vg for ON of the corresponding transistor P. Therefore, the not-addressed grid line 14 is left as it is in a floating potential seen from the control amplifier 21. Each grid line 14 is connected to an extremely thin conductor 23 biased to a low potential -Vg through a resistance area 22, so that each grid liner 14 is returned to the potential sufficiently low to prevent the electron emission by the grid line 14 at the end of address by this resistance area 22.
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公开(公告)号：JPH10321166A
公开(公告)日：1998-12-04
申请号：JP32195197
申请日：1997-11-10
Applicant: PIXTECH SA
Inventor： JAEGER AXEL
Abstract: PROBLEM TO BE SOLVED: To provide a flat display screen having enhanced screen luminous intensity by manufacturing a microchip emitting substantially constantly. SOLUTION: A flat display screen comprises a cathode 1' engaged with a grid extracting emitted electrons from at least one are 12r, 12g, 12b; 12, and anode 5' providing plural fluorescent elements 7r, 7g, 7b arranged opposite to the cathode and the grid. Therein, the cathode has non-electron emitting areas in areas arranged on the fluorescent element areas, and the areas comprise conduction layers 14 individually biased from electron emitting areas.
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公开(公告)号：JPH10134719A
公开(公告)日：1998-05-22
申请号：JP30633397
申请日：1997-10-22
Applicant: PIXTECH SA
Inventor： KANAGAWA SHINJI , LOBET MAURICE , SOL JEAN MARC , MOUGIN STEPHANE
IPC: H01J9/26
Abstract: PROBLEM TO BE SOLVED: To reduce a gaseous product by disposing a seal made of a glass rod and a spacer having a higher melting point and a greater height at the outer periphery of a screen between upper and lower plates respectively having an anode and a cathode, followed by heating up to a predetermined temperature in a vacuum. SOLUTION: A seal 20 formed of a soluble glass rod is stuck to the outside circumference of an acting area of a screen on a plate 4 with an anode formed thereon. A few glass spacers 22 are temporarily interposed between the seal 20 and the outside circumference of the acting area of the screen. A melting point of the glass of the spacer 22 is higher than that of the glass forming the seal 20, and considerably higher at that. A plate 1 with a cathode/grid formed thereon is placed on the plate 4, is heated in a vacuum at temperatures higher than the melting point of the seal 20 but lower than the melting point of the spacer 22, followed by mechanical pressing. Consequently, the spacer 22 is crushed, so as to be sealed therearound in a predetermined height by melting of the seal 20.
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