Construction and sealing of tiled, flat-panel displays
First Claim
1. A substantially flat, panel display (FPD) comprising a mosaic of individual, substantially hermetically-sealed tiles, disposed adjacent one another and having visually imperceptible seams therebetween, said tiles being individually sealed with first sealing means and having drivers operatively connected thereto, at least one of said tiles and said drivers comprises a Known Good Tile, and said substantially flat, panel display being sealed with second sealing means, so as to reduce degradation of individual tiles by moisture diffusion;
- said display further comprising a cover plate and a backplate, said tiles being affixed to said cover plate and supported by said backplate.
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Accused Products
Abstract
The present invention features methods and apparatuses for sealing tiled, flat-panel displays (FPDs). Tile edges corresponding with the display'"'"'s perimeter edges are designed with a wide seal. Interior edges, however, have narrow seals in order to maintain the desired, constant, pixel pitch across tile boundaries. In some cases, this invention applies specifically to arrays of tiles 2×2 or less, and, in other cases, to N×M arrays, where N and M are any integer numbers. The tiles are enclosed with top and bottom glass plates, which are sealed with an adhesive bond to the tiles on the outside perimeter of the tiled display. Vertical seams (where tiles meet at the perimeter of the FPD) are sealed with a small amount of polymer. The seal may be constructed between a cover plate and a back plate, sandwiching the tiles. The AMLCD edges may be coated with either a non-permeable material or a polymer having an extremely low permeability (for example, Parylene™). Alternatively, the edge sealing of individual tiles can be achieved by using a metallized film adhesive that is bonded to the tile edges. A low-temperature, sintered Solgel can be used to achieve extremely narrow, yet mechanically strong, seals for individual tiles. Still another enhancement employs a metallurgical seal outside a narrow, polymer seal.
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Citations
22 Claims
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1. A substantially flat, panel display (FPD) comprising a mosaic of individual, substantially hermetically-sealed tiles, disposed adjacent one another and having visually imperceptible seams therebetween, said tiles being individually sealed with first sealing means and having drivers operatively connected thereto, at least one of said tiles and said drivers comprises a Known Good Tile, and said substantially flat, panel display being sealed with second sealing means, so as to reduce degradation of individual tiles by moisture diffusion;
- said display further comprising a cover plate and a backplate, said tiles being affixed to said cover plate and supported by said backplate.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
- 16. A substantially flat, panel display (FPD) comprising a mosaic of individual, substantially hermetically-sealed tiles, disposed adjacent one another and having visually imperceptible seams therebetween, said tiles being individually sealed with first sealing means, said first sealing means comprising a substantially non-permeable seal material, said tiles further comprising top and bottom plates, at least one of said plates being coated with polyimide, said first sealing means being disposed therebetween, said polyimide coating being selectively removed in areas at said first sealing means, and said substantially flat, panel display being sealed with second sealing means, so as to reduce degradation of individual tiles by moisture diffusion.
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22. A substantially flat, panel display (FPD) comprising a mosaic of individual, substantially hermetically-sealed tiles, disposed adjacent one another and having visually imperceptible seams therebetween, said tiles being individually sealed with first sealing means and comprising drivers operatively connected thereto, and wherein said drivers are operatively connected to a single edge of at least one of said tiles, said substantially flat, panel display being sealed with second sealing means, so as to reduce degradation of individual tiles by moisture diffusion;
- said display further comprising a cover plate and a backplate, said tiles being affixed to said cover plate and supported by said backplate.
Specification