Process for the production of plasma displays with distributed getter material and displays thus obtained
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
H01J-063/04
H01J-001/62
H01J-009/00
출원번호
UP-0570502
(2005-07-06)
등록번호
US-7733023
(2010-06-29)
우선권정보
IT-MI2004A1443(2004-07-19)
국제출원번호
PCT/IT2005/000385
(2005-07-06)
§371/§102 date
20061213
(20061213)
국제공개번호
WO06/008770
(2006-01-26)
발명자
/ 주소
Longoni, Giorgio
Carretti, Corrado
Tominetti, Stefano
출원인 / 주소
Saes Getters S.p.A.
대리인 / 주소
Panitch Schwarze Belisario & Nadel LLP
인용정보
피인용 횟수 :
1인용 특허 :
7
초록▼
A manufacturing process for the production of plasma display panels is provided which allows obtaining in a simple way displays in which getter materials deposits are present in contact with the atmosphere present in channels or cells of the display. The process includes a step of forming the getter
A manufacturing process for the production of plasma display panels is provided which allows obtaining in a simple way displays in which getter materials deposits are present in contact with the atmosphere present in channels or cells of the display. The process includes a step of forming the getter material deposits on a free surface of the magnesium oxide layer at positions essentially corresponding to contact areas between the front glass panel and the barriers on the rear glass panel of the display panel.
대표청구항▼
We claim: 1. A process for manufacturing a plasma display panel (80; 90) comprising the following steps: manufacturing a front glass panel (FP) of a plasma display panel comprising pairs of supporting electrodes (E1) and scanning electrodes (E2), a layer of dielectric material (DF) for protection o
We claim: 1. A process for manufacturing a plasma display panel (80; 90) comprising the following steps: manufacturing a front glass panel (FP) of a plasma display panel comprising pairs of supporting electrodes (E1) and scanning electrodes (E2), a layer of dielectric material (DF) for protection of the electrodes and a layer (M) of magnesium oxide covering the layer of dielectric material; manufacturing a rear glass panel (RP) of a plasma display panel comprising barriers (R) defining channels (C) or cells in a finished display, address electrodes (AE) and phosphors (PR; PG; PB); forming getter material deposits (63, 63′, . . . ; 72, 72′, . . . ; 81, 81′, . . . ; 91, 91′, . . . , 92, 92′, . . . ) on a free surface of the magnesium oxide layer at positions which will essentially correspond to contact areas between the front glass panel and the barriers on the rear glass panel when the panels are placed together; and subsequently placing the front and rear glass panels together and sealing along the outer perimeter of the front and rear glass panels, thus defining a closed space or a plurality of closed spaces inside the display panel. 2. The process according to claim 1, wherein the deposits are formed in recesses (71, 71′, . . . ) of the magnesium oxide layer. 3. The process according to claim 1, further comprising, after the sealing step and before filling the display panel with a rare gas mixture, evacuating the closed space or spaces inside the display panel by pumping through a tubulation connected to an opening in one of the glass panels, and sealing the display panel by compressing the tubulation under heat. 4. The process according to claim 1, wherein the sealing step is carried out in a chamber containing an atmosphere corresponding to a rare gas mixture required for operation of the display panel, and the sealing occurs simultaneously with a step of filling the display panel with the rare gas mixture. 5. The process according to claim 1, wherein the step of forming the getter deposits on the free surface of the magnesium oxide layer is carried out by a technique selected among screen-printing, sputtering, chemical vapor deposition and electron beam evaporation. 6. The process according to claim 5, further comprising, when the technique selected is screen-printing, consolidating the formed deposits by a thermal treatment. 7. The process according to claim 1, wherein the getter material comprises a moisture sorbing material. 8. The process according to claim 7, wherein the moisture sorbing material is selected from the group consisting of oxides of calcium, strontium and barium, mixtures thereof, and mixtures thereof with magnesium oxide. 9. The process according to claim 1, wherein the getter material comprises a non-evaporable getter material. 10. The process according to claim 9, wherein the non-evaporable getter material is selected from the group consisting of titanium, zirconium and alloys thereof with at least one element selected among the transition metals and aluminum. 11. The process according to claim 1, wherein the getter material deposits formed on the magnesium oxide layer comprise alternating deposits of moisture sorbing material (91, 91′, . . . ) and deposits of non-evaporable getter material (92, 92′, . . . ). 12. The process according to claim 1, wherein the step of forming the getter material deposits comprises forming a mask (60) having apertures (61, 61′, . . . ) matching in shape and position those of the deposits to be formed, and arranging the mask in contact with or in proximity to the free surface of the magnesium oxide layer during the step of forming the deposits. 13. The process according to claim 11, wherein the alternating deposits are obtained in two successive deposition phases by a mask (60), and by moving the mask between the two deposition phases in a direction perpendicular to the barriers by a distance corresponding to the distance between two contiguous barriers. 14. A plasma display panel (80) obtained according the process of claim 1. 15. A plasma display panel (90) obtained according the process of claim 11. 16. The plasma display panel according to claim 14, containing also titanium dioxide in a form of particles mixed with particles of the getter material or in a form of deposits in contact with the getter material deposits. 17. A process for manufacturing a plasma display panel (80; 90) comprising the following steps: manufacturing a front glass panel (FP) of a plasma display panel comprising pairs of supporting electrodes (E1) and scanning electrodes (E2), a layer of dielectric material (DF) for protection of the electrodes and a layer (M) of magnesium oxide covering the layer of dielectric material; manufacturing a rear glass panel (RP) of a plasma display panel comprising barriers (R) defining channels (C) or cells in a finished display, address electrodes (AE) and phosphors (PR; PG; PB); forming getter material deposits (63, 63′, . . . ; 72, 72′, . . . ; 81, 81′, . . . ; 91, 91′, . . . ; 92, 92′, . . . ) on a free surface of the magnesium oxide layer at positions which will essentially correspond to contact areas between the front glass panel and the barriers on the rear glass panel; and subsequently contacting the getter material deposits with the barriers (R) and sealing along the outer perimeter of the front and rear glass panels, thus defining a closed space or a plurality of closed spaces inside the display panel.
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이 특허에 인용된 특허 (7)
Bhagavatula Venkata A. ; Garbowski Benjamin J. ; Moore Chad B. ; Trotter ; Jr. Donald M., Glass structures for information displays.
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Guy Baret FR; Jean-Yves Brun FR; Pierre Paul Jobert FR; Agide Moi FR; Yvan Raverdy FR; Serge Salavin FR, Plasma display panel having a porous structure.
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