Matsushita Electric Industrial Co., Ltd.

Panasonic Corporation

Morio Fujitani

Keisuke Sumida

Hiroyuki Yonehara

Masaki Aoki

Tatsuo Mifune

Hiroyuki Tachibana

Junichi Hibino

Shinichiro Ishino

Hideki Asida

Akira Kawase

Kazuhiro Morioka

Daisuke Adachi

Tsuyoshi Nishio

Toru Ando

Hirofumi Higashi

Shinsuke Yoshida

Hideki Ashida

Koichi Mizuno

Yasuyuki Noguchi

Tetsuya Shirai

Kenichi Kusaka

Yoshiyuki Ota

In a plasma display panel, in which an area percentage of the display electrodes in an area of an image display region of the front panel is expressed by a longitudinal axis, and a difference between a coefficient of expansion of the front substrate from room temperature to 300&#xb0; C. and a coefficient of expansion of the dielectric layer from room temperature to 300&#xb0; C. is expressed by a lateral axis, the difference between the coefficients of expansion and the area percentage stay within a region formed by connecting coordinates (35&#xd7;10/&#xb0; C., 60%), coordinates (8&#xd7;10/&#xb0; C., 60%), coordinates (5&#xd7;10/&#xb0; C., 40%), and coordinates (23&#xd7;10/&#xb0; C., 40%) in the mentioned order with a straight line where the straight line is included.

Plasma display panel having low residual stress

A plasma display panel includes a front plate and a rear plate disposed in such a manner as to face the front plate. The front plate has a display electrode and a dielectric layer covering the display electrode. The dielectric layer contains substantially no lead components but contains MgO, SiO, and KO. A content of MgO is in a range between 0.3 mol % and 1.0 mol %, both inclusive. The content of SiOis in a range between 35 mol % and 50 mol %, both inclusive.

Plasma display panel having a dielectric layer

A plasma display panel comprises front plate () having display electrode () formed on a glass substrate with discharge gap (), and back plate () having barrier ribs () formed to divide discharge cells, and arranged in a manner to confront the front plate (). The barrier ribs () comprise vertical barrier rib () arranged in parallel to an address electrode and horizontal barrier rib () arranged in a manner to cross the vertical barrier rib (), and the vertical barrier rib () has a shape satisfying the formula of H&#x3e;H&#x3e;H, where Hdenotes a height of it at crossing portion () with the horizontal barrier rib (), Ha height at a position of the discharge gap () of the display electrode (), and Ha height at a predetermined point between the position of the discharge gap () and the position of the crossing portion () with the horizontal barrier rib ().

Plasma display panel

A plasma display panel can reduce a discharge delay in address discharge, thereby performing high-speed addressing in a stable manner. A front substrate () and a back substrate () are disposed to face each other, and a discharge space () is formed and partitioned by barrier ribs () so as to form priming discharge cells () and main discharge cells (). A clearance () is provided between the barrier ribs () of the priming discharge cells () and the front substrate (), and priming particles generated in the priming discharge cells () are supplied to the main discharge cells () through the clearance (), whereby a PDP performing high-speed addressing is obtained.

Plasma display panel with priming discharge cell

A plasma display device is provided having improved efficiency and increased image quality. This device includes a pair of front and back substrates opposed to each other to form between the substrates a discharge space partitioned by barrier ribs, a plurality of display electrodes, each of which is formed of a scan electrode and a sustain electrode and disposed on the substrate of a front panel to form a discharge cell between the barrier ribs, a dielectric layer formed above the front substrate to cover the display electrodes, and a phosphor layer which emits light by discharge between the display electrodes. The dielectric layer is constructed of at least two layers of different softening points and is formed with, at its surface closer to the discharge space, a recessed part in each discharge cell. This suppresses extension of the discharge and allows stable formation of the recessed part.

Plasma display having a recessed part in a discharge cell

An object of the present invention is to provide a technique for relatively easily suppressing the yellowing of a Plasma Display Panel in which electrodes comprising silver are disposed on the substrates, and thus render image displays with high luminance and high quality. In order to achieve the object, an arrangement is made in which the electrodes comprising silver further include an element whose standard electrode potential is lower than that of silver, such as Cr, Al, In, B, and Ti, or a compound of such an element, as a silver ionization inhibiting substance.

Plasma display panel with an improved electrode

A PDP has first and second substrates which face each other with a space in between. A display electrode pair and a dielectric layer are formed on the first substrate, and a plurality of discharge cells are formed between the first and second substrates along the display electrode pair. In this construction, two or more depressions are provided in the dielectric layer in an area corresponding to each discharge cell. This improves luminous intensity and illumination efficiency. Also, to form the dielectric layer on the first substrate, first a transfer film is made by providing a dielectric precursor layer on a support film, then depressions are formed in the dielectric precursor layer of the transfer film, and lastly the dielectric precursor layer of the transfer film is transferred onto the first substrate. This decreases the number of manufacturing steps and increases the yield, thereby reducing manufacturing costs.

Plasma display panel and method for increasing charge capacity of a display cell

Disclosed here is a plasma display panel having stable addressing characteristics and a method of manufacturing a plasma display panel having such a reliable structure. According to the plasma display panel and the manufacturing method, on back plate () that confronts front plate () having scan electrodes () and sustain electrodes () thereon, data electrodes (), first dielectric layer () disposed to cover the data electrodes, priming electrodes (), and second dielectric layer () disposed to cover the priming electrodes are formed in the order named; at the same time, the softening temperatures of the materials forming the components disposed on the back plate are determined so as to become lower in the order named. The temperature setting protects first dielectric layer () from deterioration or deformation, improving dielectric voltage between data electrodes () and priming electrodes ().

Plasma display panel and method of manufacturing the same

A plasma display panel includes a front panel and a rear panel disposed opposing each other. The front panel includes a display electrode composed of a scan electrode and a sustain electrode extending in a row direction. A rear panel includes address electrode extending in a column direction and intersecting the display electrode. A lattice form of barrier ribs of row direction barrier ribs and column direction barrier ribs, which have the same height, forming a plurality of individually divided discharge cells is provided in a part in which the display electrode and the address electrode intersect each other. The row direction barrier ribs of the barrier ribs are provided with communication portions communicating discharge cells in non-parallel to the column direction.

A plasma display panel has a stable addressing characteristic, no dielectric breakdown, and high reliability. Data electrodes (), first dielectric layer () for covering the data electrodes (), priming electrodes (), and second dielectric layer () for covering the priming electrodes () are sequentially formed on back substrate (). Slotted parts () are formed in a part of each data electrode (). Thus, data electrodes () are prevented from deforming during the manufacturing, and dielectric voltage between data electrodes () and priming electrodes () is improved.

A plasma display panel does not cause disadvantages such as exfoliating or chipping in dielectric layers. The plasma display panel includes a first dielectric layer () for covering a display electrode which is formed on a front substrate () and which consists of a scan electrode and a sustain electrode, and a second dielectric layer for covering a data electrode formed on a back substrate, and the peripheries of the first dielectric layer () and/or the second dielectric layer have a radius of curvature of other than 0.

Plasma display panel having dielectric layer with curved corner

A plasma display panel has address properties stabilized. A priming discharge is performed between auxiliary electrodes (), which are formed on a front substrate () and coupled with scan electrodes (), and priming electrodes () formed on a back substrate (). And on the front substrate (), a dielectric layer () is made thinner in regions corresponding to priming cells (gap parts) than in regions corresponding to cell parts (). As a result, the priming discharge has a wider margin, and a supply of priming particles to the discharge cells is stabilized, whereby a discharge delay during the addressing is reduced, and the address properties are stabilized.

Plasma display panel having priming discharge cell

A plasma display device having improved luminous efficiency includes a pair of front and back substrates opposed to each other to form between the substrates a discharge space partitioned by barrier ribs, a plurality of display electrodes, each of which is formed of a scan electrode and a sustain electrode and disposed on the substrate of a front panel to form a discharge cell between the barrier ribs, a dielectric layer formed above the front substrate to cover the display electrodes, and a phosphor layer which emits light by discharge between the display electrodes. The discharge space is filled with mixed gas as discharge gas, the mixed gas includes Xe having a partial pressure of 5% to 30%, and the dielectric layer is formed with, at its surface closer to the discharge space, a recessed part in each discharge cell.

Plasma display having a dielectric layer formed with a recessed part

A plasma display panel is provided which is free from blisters and pinholes on its dielectric layers and has excellent characteristics of breakdown voltage. The plasma display panel has a multilayered first dielectric layer covering a display electrode including a scanning electrode and a sustain electrode that are provided on a front substrate, and a multilayered second dielectric layer covering a data electrode that is provided on a back substrate. The periphery of an upper dielectric layer of the first dielectric layer and/or the second dielectric layer is positioned identically or partially in size and shape to a periphery of a lower dielectric layer to be formed.

A method of manufacturing a plasma display panel, whose glass substrate is not tinged and luminance is high, is provided, even when silver material is used. A layer including silver compounds, which include sulfur generated on a surface of an electrode by reacting on sulfur in air, is removed before a forming process of a dielectric layer. Then decomposition of the compound is restricted in a firing process of the dielectric layer. Even when the electrode having the silver material with high electrical conductivity is used, yellow coloration on the glass substrate is prevented. As a result, a high quality plasma display panel which does not decrease in luminance is provided.

Growing community of inventors

Osaka, Japan

Morio Fujitani