摘要:
A color shadow mask assembly includes a shadow mask spaced apart from an inner surface of a face panel by a predetermined gap and having a curved surface, and a rectangular frame for supporting and fixing the shadow mask. The shadow mask and the frame are integrally formed by welding to fix a side wall of the frame to a skirt of the face panel. The skirt alternately overlaps inner and outer surfaces of the side wall of the frame at opposite surfaces between the skirt of the shadow mask and the side wall of the frame.
摘要:
The present invention provides a plasma display device that has light emission properties with short persistence where green light has a persistence time of 3.5 msec or less, that is excellent in luminance, luminance degradation resistance, and color tone, and that is suitable for, for example, a stereoscopic image display device. The present invention provides a plasma display device including a plasma display panel in which a pair of substrates at least whose front side is transparent are disposed to oppose each other so as to form a discharge space between the substrates, barrier ribs for dividing the discharge space into a plurality of discharge spaces are disposed on at least one substrate, electrode groups are disposed on the substrates so as to produce discharge in the discharge spaces divided with the barrier ribs, and a green phosphor layer that emits light by the discharge is provided, wherein the green phosphor layer includes a mixed phosphor containing a short persistence Mn2+-activated green phosphor with a 1/10 persistence time of more than 2 msec but less than 5 msec and either a Ce3+-activated green phosphor or an Eu2+-activated green phosphor that has a light emission peak in a wavelength range of not less than 490 nm and less than 560 nm.
摘要:
Ribs for defining pixel cells are formed in the shape of a lattice, and sustain electrodes and scan electrodes are disposed near the ribs. The electrodes are spaced apart in each pixel cell, and the sustain electrode and the scan electrode are each cut away between pixel cells arranged in the row direction to provide each pixel cell with individually separated electrodes. In addition, between pixel cells adjacent to each other in the row direction, the sustain electrodes and the scan electrodes are connected to each other by means of a sustain-side bus electrode and a scan-side bus electrode, respectively. This makes it possible to provide a high luminous efficiency. Furthermore, each pixel cell is provided with a wide distance between the electrodes and thereby with a large effective opening portion. Thus, this provides only a small amount of reduction in intensity when the electrodes are spaced apart between the pixel cells arranged in the row direction in order to increase the luminous efficiency. The sustain electrodes or the scan electrodes can be connected to each other or shared between pixel cells adjacent to each other in the column direction and thus the effective opening portion can be made larger, thereby making it possible to provide a further increased intensity and luminous efficiency.
摘要:
There is provided a shadow mask for a cathode ray tube, including a plate having a first surface and a second surface. The plate is formed with at least one line of slots between which bridge portions are formed, each slot being spaced away from adjacent slots by a predetermined pitch P. The bridge portions are defined by a first length at the first surface of the plate and a second length at the second surface of the plate, the first and second lengths being determined so that a factor R is in the range of 5% to 15%, wherein the factor R is defined as a ratio of the smaller of the first and second lengths, to the predetermined pitch P. By setting the factor R in the range of 5% to 15%, it is possible to enhance the mechanical strength of the shadow mask without deterioration of brightness characteristic of the shadow mask.
摘要:
The present invention provides a plasma display device that has light emission properties with short persistence where green light has a persistence time of 3.5 msec or less, that is excellent in luminance, luminance degradation resistance, and color tone, and that is suitable for, for example, a stereoscopic image display device. The present invention provides a plasma display device including a plasma display panel in which a pair of substrates at least whose front side is transparent are disposed to oppose each other so as to form a discharge space between the substrates, barrier ribs for dividing the discharge space into a plurality of discharge spaces are disposed on at least one substrate, electrode groups are disposed on the substrates so as to produce discharge in the discharge spaces divided with the barrier ribs, and a green phosphor layer that emits light by the discharge is provided, wherein the green phosphor layer includes a mixed phosphor containing a short persistence Mn2+-activated green phosphor with a 1/10 persistence time of more than 2 msec but less than 5 msec and either a Ce3+-activated green phosphor or an Eu2+-activated green phosphor that has a light emission peak in a wavelength range of not less than 490 nm and less than 560 nm.
摘要:
Each cell of a PDP is provided with a pair of narrow and substantially U-shaped plane electrodes, which are connected to a corresponding trace electrode at the open ends thereof (located at the respective non-discharging gap sides) to operate as scan electrode and common electrode. A plane discharging gap is defined between the closed front ends of the plane electrodes. The plane electrodes have a curved profile at the front ends thereof with the highest point located at the longitudinal central axis of the cell. With this arrangement, the effective length of the plane electrodes can be increased without increasing the surface area of the plane electrodes so that the plane electrodes overlap the data electrode at the front ends thereof over an expanded area.
摘要:
A mask structure of a color picture tube includes a number of grid wires stretched over a frame in the same direction and separated from one another, and a damp wire stretched to traverse the number of grid wires in contact with the number of grid wires. The damp wire is formed of a tungsten core wire coated with a secondary emission semiconductor material layer. Thus, art asymmetrical electron lens is formed by a potential difference generated between the grid wire and the damp wire, so that an electron beam having passed through a spacing between the grid wires is deflected in a converging direction. Therefore, the electron beam is guided onto a zone of a phosphor screen shaded by the damp wire. Accordingly, a black line, which would otherwise appear because the electron beam is shielded by the damp wire, becomes inconspicuous. Namely, the display quality is elevated.
摘要:
A protective layer of a plasma display panel includes a base layer formed on a dielectric layer, and a plurality of aggregated particles dispersed on an entire surface of the base layer. Phosphor layers include a green phosphor layer containing an Mn2+ activated short persistent green phosphor whose 1/10 afterglow time exceeds 2 msec and stays below 5 msec, and a Ce3+ activated green phosphor or an Eu2+ activated green phosphor having a luminescence peak in a wavelength region of at least 490 nm to less than 560 nm.
摘要:
Ribs for defining pixel cells are formed in the shape of a lattice, and sustain electrodes and scan electrodes are disposed near the ribs. The electrodes are spaced apart in each pixel cell, and the sustain electrode and the scan electrode are each cut away between pixel cells arranged in the row direction to provide each pixel cell with individually separated electrodes. In addition, between pixel cells adjacent to each other in the row direction, the sustain electrodes and the scan electrodes are connected to each other by means of a sustain-side bus electrode and a scan-side bus electrode, respectively. This makes it possible to provide a high luminous efficiency. Furthermore, each pixel cell is provided with a wide distance between the electrodes and thereby with a large effective opening portion. Thus, this provides only a small amount of reduction in intensity when the electrodes are spaced apart between the pixel cells arranged in the row direction in order to increase the luminous efficiency. The sustain electrodes or the scan electrodes can be connected to each other or shared between pixel cells adjacent to each other in the column direction and thus the effective opening portion can be made larger, thereby making it possible to provide a further increased intensity and luminous efficiency.
摘要:
A plasma display panel is provided with a transparent substrate, and scanning electrodes and sustaining electrodes formed on the transparent substrate extending in a first direction. An area of the scanning electrode is smaller than an area of the sustaining electrode in each of display cells. The widths of the scanning electrode and the sustaining electrode in a second direction crossing the first direction are substantially equal to each other.