Abstract:
PROBLEM TO BE SOLVED: To facilitate to mount a spacer wall between a face plate and a back plate of a flat panel display. SOLUTION: A coupling electrode is installed on the face plate so that an electrostatic force may be added on spacer stands 111, 112. By this, the spacer stands are supported at a constant position during mounting of the spacer wall. Since the spacer wall is expanded mechanically and/or thermally, a tensile force useful to correct waving distortion of the spacer wall is given to the spacer wall so that it can be contracted. COPYRIGHT: (C)2004,JPO
Abstract:
A light-emitting device (42, 68, 80, 90, or 100) suitable for a flat-panel CRT display contains a plate (54), a light-emissive region (56), and a light-reflective layer (60 or 70). The light-emitting device achieves one or more of the following characteristics by suitably implementing the light-reflective layer or/and providing one or more layers (72, 82, 92, and 100) along the light-reflective layer: (a) reduced electron energy loss as electrons pass through the light-reflective layer, (b) gettering along the light-reflective layer, (c) reduced secondary electron emission along the light-reflective layer, (d) reduced electron backscattering along the light-reflective layer, and (e) reduced chemical reactivity along the light-reflective layer.
Abstract:
The present invention provides a spacer assembly (100) which is tailored to provide a secondary electron emission coefficient of approximately 1 for the spacer assembly (100) when the spacer assembly (100) is subjected to flat panel display operating voltages. The present invention further provides a spacer assembly (100) which accomplishes the above achievement and which does not degrade severely when subjected to electron bombardment. The present invention further provides a spacer assembly (100) which accomplishes both of the above-listed achievements and which does not significantly contribute to contamination of the vacuum environment of the flat panel display or be susceptible to contamination that may evolve within the tube. Specifically, in one embodiment, the present invention is comprised of a spacer structure (102) which has a specific secondary electron emission coefficient function associated therewith. The material comprising the spacer structure (102) is tailored to provide a secondary electron emission coefficient of approximately 1 for the spacer assembly (100) when the spacer assembly (100) is subjected to flat panel display operating voltages.
Abstract:
An apparatus for removing contaminants from a display device (400) is disclosed. In one embodiment, an auxiliary chamber (408) is adapted to be coupled to a surface of a display device (400) such that contaminants within the display device can travel from the display device into the auxiliary chamber. A getter (410) is disposed in the auxiliary chamber (408). The getter is adapted to capture the contaminants once the contaminants travel from the display device (400) into the auxiliary chamber (408). In other embodiments, the getter is disposed in the border region surrounding the active area of the display.
Abstract:
A multi-level matrix structure (100) for retaining a support structure within a flat panel display device. In one embodiment, the multi-level matrix structure (100) is comprised of first parallel ridges (102). The multi-level matrix structure (100) further includes second parallel ridges (104). The second parallel ridges (104) are oriented substantially orthogonally with respect to the first parallel ridges (102). In this embodiment, the second parallel ridges (104) have a height which is greater than the height of the first parallel ridges (102). Furthermore, in this embodiment, the second plurality of parallel spaced apart ridges (104) include contact portions (106) for retaining a support structure at a desired location within a flat panel display device. Hence, when a support structure is inserted between at least two of the contact portions (106) of the multi-level support structure (100), the support structure is retained in place, at a desired location within the flat panel display device, by the contact portions (106).
Abstract:
A flat panel display includes a spacer with a coating material applied over the spacer. The coating material is characterized by formula Psc > 100(Psw) and r
Abstract:
A flat panel display apparatus comprising: a faceplate, a backplate disposed opposing said faceplate, said faceplate and said backplate adapted to be connected in a sealed environment such that a low pressure region exists between said faceplate and said backplate; a spacer assembly (900) disposed within said sealed environment, said spacer assembly supporting said faceplate and said backplate against forces acting in a direction towards said sealed environment, said spacer assembly tailored to provide a secondary electron emission coefficient of approximately 1 for said spacer assembly when said spacer assembly is subjected to flat panel display operating voltages, said spacer assembly further including a spacer structure (902); and a coating material (904) applied to at least a portion of said spacer structure, wherein said coating material is comprised of a layered material that is oriented with its basal plane parallel to a face of said spacer structure (902).
Abstract:
An electron-emitting device contains an electron focusing system (37 or 37A) formed with a base focusing structure (38 or 38A) and a focus coating (39 or 39A) that penetrates, preferably only pathway, into a focus opening (40) extending through the base focusing structure. The focus coating, normally of lower resistivity than the base focusing structure, is typically formed by an angled deposition technique. An access conductor (106 or 106A) is preferably electrically coupled to the lower surface of the focus coating. A potential for controlling the focusing of electrons that travel through the focus opening is provided to the focus coating via the access conductor.
Abstract:
Methods and structures are provided which reduce charge build up on spacer walls in a flat panel display. In one embodiment, the order of activating the electron emitting elements is modified such that the electron emitting elements adjacent to the spacers are activated before the electron emitting elements which charge thespacers (501, 502, 503) to an undesirable level. In another embodiment, face electrodes (501a, 502a, 503a) which are located on the surface of the spacer are connected to a common bus (504), thereby distributing the charge built up on any particular spacer. The common bus (504) can further be connected to a capacitor (1010) which is located either inside or outside the active region of the flat panel display, thereby increasing the charging time constant of the spacers. The capacitor can be connected to ground or to a high voltage supply (1011). In another embodiment, the charging time constant of the spacers is increased by fabricating the spacers from a material having a high dielectric constant, such as dispersion of aluminum oxide, chromium oxide and titanium oxide, wherein the titanium oxide makes up approximately four percent of the spacer material.
Abstract:
A coating material, for coating a spacer structure (300) of a flat panel display, having specific resistivity and secondary emission characteristics is disclosed. The coating material is characterized by formula Psc > 100(Psw) and r