公开(公告)号：EP1018134A1

公开(公告)日：2000-07-12

申请号：EP98944670.3

申请日：1998-09-02

Applicant: Candescent Technologies Corporation

Inventor： HANSEN, Ronald, L. ,  FRIEDMAN, Jay

IPC: H01J31/12 ,  H01J9/02 ,  H01J29/28 ,  H01J23/04 ,  H01J1/30

CPC classification number: G09G3/2011 ,  G09G3/22 ,  G09G2310/0267 ,  G09G2310/027 ,  G09G2320/043 ,  G09G2320/0606 ,  G09G2320/0666

Abstract: A circuit and method for controlling the color balance of a flat panel display without losing gray scale resolution of the display screen. Within a FED screen (200), a matrix of rows and columns is provided and emitters are situated within each row-column intersection. Rows are activated sequentially by row drivers (220a-220c) and corresponding individual gray scale information (voltages) is driven over the columns by column drivers (240-240c). When the proper voltage is applied across the cathode and anode of the emitters, they release electrons toward a phosphor spot, e.g., red, green, blue, causing an illumination point. Within each column driver (240a-240c), a digital to analog converter (340a-340c) contains two data-in voltage-out transformation functions, a first function corresponding to a first voltage intensity and a second function corresponding to a lesser voltage intensity for a same digital color value.

公开(公告)号：EP1016061A1

公开(公告)日：2000-07-05

申请号：EP98918827.1

申请日：1998-04-27

Applicant: Candescent Technologies Corporation

Inventor： HANSEN, Ronald, L.

IPC: G09G3/22

CPC classification number: G09G3/22 ,  G09G5/10 ,  G09G2320/029 ,  G09G2320/043 ,  G09G2320/0626 ,  G09G2360/144 ,  G09G2360/145

Abstract: A circuit and method for controlling the brightness of a display screen implemented using a field emission display (FED) screen (200). In an automatic brightness adjustment embodiment, an ambient light sensor (580) supplies the brightness signal that changes in proportion to the light sensed. The FED screen brightness is increased in response to increases in the light sensor output and decreased in response to decreases in the light sensor output. Another embodiment uses the light sensor (580) for brightness normalization where the FED screen (200) is used as the reference light level and the FED screen brightness is compensated for due to variations caused by age and manufacturing differences. A manual brightness adjustment (override) and automatic brightness on/off switch are also provided.

公开(公告)号：EP0993679A1

公开(公告)日：2000-04-19

申请号：EP98930256.7

申请日：1998-06-19

Applicant: Candescent Technologies Corporation

Inventor： KNALL, Johan, N. ,  HAVEN, Duane, A. ,  RAMANI, Swayambu

IPC: H01J1/62

CPC classification number: H01J3/022 ,  H01J2201/319 ,  H01J2329/00

Abstract: An electron-emitting device employs a multi-layer resistor (46). A lower layer (48) of the resistor overlies an emitter electrode (42). An electron-emissive element (54) overlies an upper layer (50) of the resistor. The two resistive layers are of different chemical composition. The upper resistive layer is typically formed with cermet. The lower resistive layer is typically formed with a silicon-carbon compound. In fabricating the device, the upper resistive layer normally serves as an etch stop for protecting the lower resistive layer and the emitter electrode during the etch of an overlying dielectric layer (52) to form an opening (56) in which the electron-emissive element is later provided.

Abstract translation: 电子发射器件采用多层电阻器（46）。 电阻器的下层（48）覆盖发射电极（42）。 电子发射元件（54）覆盖电阻器的上层（50）。 这两个电阻层具有不同的化学组成。 上电阻层通常由金属陶瓷形成。 下电阻层通常由硅 - 碳化合物形成。 在制造器件时，上电阻层通常用作蚀刻停止层，用于在上覆电介质层（52）的蚀刻期间保护下电阻层和发射电极以形成开口（56），其中电子发射元件 稍后提供。

公开(公告)号：EP0972428A1

公开(公告)日：2000-01-19

申请号：EP98907557.7

申请日：1998-02-27

Applicant: Candescent Technologies Corporation

Inventor： BRIGHAM, Kristin ,  PONG, Chungdee

IPC: H05B33/10 ,  B29D11/00 ,  B44C1/22

CPC classification number: H01J9/025 ,  H01J2237/32 ,  H01J2237/334 ,  H01L21/31116 ,  H01L21/31144 ,  H01L21/32136 ,  H01L21/32139

Abstract: A method is provided for etching an etch layer using a polycarbonate layer as a mask. The method includes placing an etch structure (80) in a reaction chamber (111), the etch structure including an etch layer (86) underlying a polycarbonate layer (88), the polycarbonate layer having apertures (90). The etch layer is then eteched using a low pressure-high density plasma generated at a pressure in the range of approximately 1 to 30 millitorr where the ionized particle concentration is at least 1011 ions/cm3 and where the ionized particle concentration is substantially equal throughout the volume of the reaction chamber. To increase the etch rate, the etch structure can be heated or biased. To decrease the etch rate, an inert gas can be added to the process gas mixture used to form the plasma.

公开(公告)号：EP0965248A1

公开(公告)日：1999-12-22

申请号：EP97910729.0

申请日：1997-10-17

Applicant: Candescent Technologies Corporation

Inventor： HANSEN, Ronald, L. ,  SPINDT, Christopher, J. ,  FIELD, John, E.

IPC: H01J1 ,  G09G3 ,  H05B37

CPC classification number: G09G3/22 ,  G09G2310/027 ,  G09G2320/0276 ,  H01J2329/00

Abstract: A voltage-adjustment section (20) of an electronic device converts an input control voltage (VI) into an output control voltage (VO) in such a way that a collector current (ICP) form with electrons emitted from an emitter (EP) of an emission/collection cell (26), or triode, varies in a desired, typically linear, manner with the input control voltage. The triode further includes a collector (CP) that carries the collector current and a gate electrode (GP) that regulates the collector current as a function of the output control voltage. Control of the collector current so as to achieve the desired current/voltage relationship is achieved with an analog control loop containing the triode and an amplifier (28) coupled between the triode's collector and gate electrode. The triode thus typically has a linear gamma characteristic relative to the input control voltage. The voltage-adjustment section is suitable for use in a display device such as a flat-panel display.

公开(公告)号：EP0909347A1

公开(公告)日：1999-04-21

申请号：EP97927841.0

申请日：1997-06-05

Applicant: Candescent Technologies Corporation

Inventor： HAVEN, Duane, A. ,  SLUZKY, Esther ,  MACAULAY, John, M.

IPC: C25D13 ,  H01J9

CPC classification number: H01J9/025

Abstract: A method for creating a solid layer (36A or 52A) through which openings (38 or 54) extend entails subjecting particles (30) suspended in a fluid (26) to an electric field (EA) to cause a number of the particles to move towards, and accumulate over, a structure placed in the fluid. The structure, including the so-accumulated particles, is removed from the fluid. Solid material is deposited over the structure at least in the space between the so-accumulated particles. The particles, including any overlying material (36B or 52B), are removed. The remaining solid material forms the solid layer through which openings extend at the locations of the so-removed particles. The structure is typically a partially finished electron-emitting device. The solid layer is then typically either a gate layer for the electron-emitting device or a layer used in forming the gate layer.

公开(公告)号：EP0807314A1

公开(公告)日：1997-11-19

申请号：EP96905347.0

申请日：1996-01-31

Applicant: Candescent Technologies Corporation

Inventor： BERGERON, David, L. ,  MACAULAY, John, M. ,  BARTON, Roger, W. ,  MORSE, Jeffrey, D.

IPC: H01J1 ,  H01J9 ,  H01J29 ,  H01J31

CPC classification number: H01J1/3042 ,  H01J9/025 ,  H01J2201/30457 ,  H01J2201/319

Abstract: A gated filament structure for a field emission display includes a plurality of filaments. Included is a substrate, an insulating layer positioned adjacent to the substrate, and a metal gate layer position adjacent to the insulating layer. The metal gate layer has a plurality of gates, the metal gate layer having an average thickness 's' and a top metal gate layer planar surface that is substantially parallel to a bottom metal gate layer planar surface. The metal gate layer includes a plurality of apertures extending through the gates. Each aperture has an average width 'r' along a bottom planar surface of the aperture. Each aperture defines a midpoint plane positioned parallel to and equally distant from the top metal gate layer planar surface and the bottom metal gate layer planar surface. A plurality of filaments are individually positioned in an aperture. Each filament has a filament axis. The intersection of the filament axis and the midpoint plane defines a point 'O'. Each filament includes a filament tip terminating at a point 'A'. A majority of all filament tips of the display have a length 'L' between each filament tip at point A and point O along the filament axis where, L « (s + r)/2.

公开(公告)号：EP1116202B1

公开(公告)日：2007-02-28

申请号：EP99943611.6

申请日：1999-07-08

Applicant: Candescent Technologies Corporation

Inventor： ELLOWAY, Donald, J. ,  MORRIS, David, L. ,  SCANNELL, William, J. ,  SPINDT, Christopher, J.

IPC: G09G3/10 ,  H01J9/44

CPC classification number: G09G3/22 ,  G09G2310/06 ,  G09G2310/066 ,  G09G2330/02 ,  H01J9/39 ,  H01J9/44 ,  H01J31/127 ,  H01J2209/0223

Abstract: A method of removing contaminant particles in newly fabricated filed emission displays. Contaminant particles are removed by a conditioning process which includes the steps of: a) driving an anode (20) of a field emission display (FED) to a predetermined voltage; b) slowly increasing an emission current of the FED after the anode has reached the predetermined voltage; and c) providing an ion-trapping device for catching the ions and particles knocked off, or otherwise released, by emitted electrons (40). By driving the anode to the predetermined voltage and by slowly increasing the emission current of the FED, contaminant particles are effectively removed without damaging the FED. A method of operating FEDs is also provided to prevent gate-to-emitter current during turn-on and turn-off, which comprises the steps of: a) enabling the anode display screen (20); and b) enabling the electron-emitters (40) after the anode display screen is enabled. By allowing sufficient time for the anode display screen to reach a predetermined voltage before the emitter is enabled, the emitted electrons (40) will be attracted to the anode (20).

Abstract translation: 在新制造的场发射显示器中去除污染物颗粒的方法。 通过调节过程去除污染物颗粒，该调节过程包括以下步骤：a）将场发射显示器（FED）的阳极（20）驱动到预定电压; b）在阳极达到预定电压后，缓慢增加FED的发射电流; 和c）提供用于捕获被发射的电子撞击或以其他方式释放的离子和粒子的离子俘获装置（40）。 通过将阳极驱动至预定电压，并通过缓慢增加FED的发射电流，污染物颗粒被有效地去除而不损坏FED。 还提供了一种操作FED的方法，以在开启和关断期间防止栅极 - 发射极电流，该方法包括以下步骤：a）启用阳极显示屏幕（20）;以及 和b）在阳极显示屏被启用之后启用电子发射器（40）。 通过在发射器启用之前允许阳极显示屏足够的时间达到预定电压，发射的电子（40）将被吸引到阳极（20）。

公开(公告)号：EP0807314B1

公开(公告)日：2002-04-24

申请号：EP96905347.9

申请日：1996-01-31

Applicant: Candescent Technologies Corporation

Inventor： BERGERON, David, L. ,  MACAULAY, John, M. ,  BARTON, Roger, W. ,  MORSE, Jeffrey, D.

IPC: H01J1/30 ,  H01J9/02 ,  H01J31/12

CPC classification number: H01J1/3042 ,  H01J9/025 ,  H01J2201/30457 ,  H01J2201/319

公开(公告)号：EP1116202A1

公开(公告)日：2001-07-18

申请号：EP99943611.6

申请日：1999-07-08

Applicant: Candescent Technologies Corporation

Inventor： ELLOWAY, Donald, J. ,  MORRIS, David, L. ,  SCANNELL, William, J. ,  SPINDT, Christopher, J.

IPC: G09G3/10

CPC classification number: G09G3/22 ,  G09G2310/06 ,  G09G2310/066 ,  G09G2330/02 ,  H01J9/39 ,  H01J9/44 ,  H01J31/127 ,  H01J2209/0223

Abstract: A method of removing contaminant particles in newly fabricated filed emission displays. Contaminant particles are removed by a conditioning process which includes the steps of: a) driving an anode (20) of a field emission display (FED) to a predetermined voltage; b) slowly increasing an emission current of the FED after the anode has reached the predetermined voltage; and c) providing an ion-trapping device for catching the ions and particles knocked off, or otherwise released, by emitted electrons (40). By driving the anode to the predetermined voltage and by slowly increasing the emission current of the FED, contaminant particles are effectively removed without damaging the FED. A method of operating FEDs is also provided to prevent gate-to-emitter current during turn-on and turn-off, which comprises the steps of: a) enabling the anode display screen (20); and b) enabling the electron-emitters (40) after the anode display screen is enabled. By allowing sufficient time for the anode display screen to reach a predetermined voltage before the emitter is enabled, the emitted electrons (40) will be attracted to the anode (20).