EP0680067A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Gas discharge display apparatus and method for driving the same
Assignee: Panasonic Holdings Corp
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Filing: 1995-04-26
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Granted: —
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Expires: 2015-04-26
Abstract
Abstract A plurality of scanning electrodes and a plurality of sustaining electrodes parallel to each other are located on an inner face of a first glass substrate. Each of the scanning electrodes and each of the sustaining electrodes form a pair. A dielectric layer and a protection layer are formed on the first glass substrate in this order, covering the electrodes. A plurality of data electrodes perpendicular to the scanning electrodes and the sustaining electrodes are located on an inner face of a second glass substrate which is located opposed to the first glass substrate with a discharge space interposed therebetween. In an AC-type PDP having such a structure, at least one of the plurality of scanning electrodes and the plurality of sustaining electrodes are divided into a plurality of groups, and pulses having different phases are applied to the electrodes in different groups, thereby causing sustaining discharge. The scanning electrodes and the sustaining electrodes may be comb-like with teeth. The comb-like scanning electrodes and the comb-like sustaining electrodes are opposed to each other with a small gap interposed therebetween in the manner that the teeth thereof are in engagement with each other. In such a case, the data electrodes are located opposed to and in a longitudinal direction of the teeth of the scanning electrodes.
Inventors
- 👤 Taichi Shino
- 👤 Yukiharu Ito
- 👤 Takio Okamoto
- 👤 Takao Wakitani
- 👤 Kazunori Hirao
- 👤 Toru Hirayama
- 👤 Koichi Itsuda
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-27 11:49
CPC Classifications
H; H01; H01J; H01J11/00; H01J11/20; H01J11/22; H01J11/32; G; G09; G09G; G09G3/00; G09G3/20; G09G3/22; G09G3/28; G09G3/288; G09G3/298; G09G3/2983; G09G3/2986; H01J11/10; H01J11/12; H01J11/28; G09G2300/00; G09G2300/04; G09G2300/0439; G09G2300/0443; G09G2310/00; G09G2310/06; G09G2310/066; G09G3/291; G09G3/292; G09G3/2927; G09G3/294; H01J2211/00; H01J2211/20; H01J2211/22; H01J2211/32; H01J2211/323
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
141 words
A gas discharge display apparatus, comprising: a first substrate and a second substrate located opposed to each other with a discharge space interposed therebetween to form an outer casing; a first electrode group including a plurality of scanning electrodes and a plurality of sustaining electrodes located parallel to each other on an inner face of the first substrate, each of the plurality of scanning electrodes and each of the plurality of sustaining electrodes forming a pair; a dielectric layer covering the first electrode group; and a second electrode group including a plurality of data electrodes and a plurality of erasing electrodes located parallel to each other on an inner face of the second substrate in a direction perpendicular to the first electrode group, each of the plurality of data electrodes and each of the plurality of erasing electrodes forming a pair.
Claim 2
Independent Claim
208 words
A method for driving a gas discharge display apparatus including a first substrate and a second substrate located opposed to each other with a discharge space interposed therebetween to form an outer casing; a first electrode group including a plurality of scanning electrodes and a plurality of sustaining electrodes located parallel to each other on an inner face of the first substrate, each of the plurality of scanning electrodes and each of the plurality of sustaining electrodes forming a pair; a dielectric layer covering the first electrode group; and a second electrode group including a plurality of data electrodes and a plurality of erasing electrodes located parallel to each other on an inner face of the second substrate in a direction perpendicular to the first electrode group, each of the plurality of data electrodes and each of the plurality of erasing electrodes forming a pair, the method comprising the steps of: applying a voltage pulse to the plurality of scanning electrodes and the plurality of sustaining electrodes included in the first electrode group alternately, thereby causing sustaining discharge between each pair of scanning electrode and sustaining electrode; and causing erasing discharge between the plurality of sustaining electrodes and the plurality of erasing electrodes, thereby erasing a residual charge.
Claim 3
Dependent Claim
190 words
A gas discharge display apparatus, comprising: a first substrate and a second substrate located opposed to each other with a discharge space interposed therebetween to form an outer casing; a first electrode group including a plurality of scanning electrodes and a plurality of sustaining electrodes located on an inner face of the first substrate, each of the plurality of scanning electrodes and each of the plurality of sustaining electrodes forming a pair; a dielectric layer covering the first electrode group; and a second electrode group including a plurality of data electrodes located on an inner face of the second substrate parallel to one another in a direction perpendicular to the first electrode group, wherein: the plurality of scanning electrodes and the plurality of sustaining electrodes each have a comb-like shape with teeth, the scanning electrode and the sustaining electrode in each pair are opposed to each other with a small gap interposed therebetween in the manner that the teeth thereof are in engagement with each other, and the plurality of data electrodes are located opposed to and in a longitudinal direction of the teeth of the plurality of scanning electrodes.
Claim 4
Dependent Claim
29 words
A gas discharge display apparatus according to claim 3, wherein the second electrode group includes a plurality of erasing electrodes located parallel to the plurality of data electrodes, respectively.
Claim 5
Dependent Claim
21 words
A gas discharge display apparatus according to claim 4, wherein the plurality of erasing electrodes are formed of a cathode material.
Claim 6
Dependent Claim
154 words
A gas discharge display apparatus, comprising: a first substrate and a second substrate located opposed to each other with a discharge space interposed therebetween to form an outer casing; a first electrode group including a plurality of scanning electrodes and a plurality of sustaining electrodes located parallel to each other on an inner face of the first substrate, each of the plurality of scanning electrodes and each of the plurality of sustaining electrodes forming a pair; a dielectric layer covering the first electrode group; and a second electrode group including a plurality of data electrodes located parallel to one another on an inner face of the second substrate in a direction perpendicular to the first electrode group, wherein at least one of the plurality of scanning electrodes and the plurality of sustaining electrodes are each divided into a plurality of areas, and terminals respectively connected to the areas are drawn outside the outer casing.
Claim 7
Independent Claim
178 words
A method for driving a gas discharge display apparatus including a first substrate and a second substrate located opposed to each other with a discharge space interposed therebetween to form an outer casing; a first electrode group including a plurality of scanning electrodes and a plurality of sustaining electrodes located parallel to each other on on inner face of the first substrate, each of the plurality of scanning electrodes and each of the plurality of sustaining electrodes forming a pair; a dielectric layer covering the first electrode group; and a second electrode group including a plurality of data electrodes located parallel to one another on an inner face of the second substrate in a direction perpendicular to the first electrode group, the method comprising the step of: dividing at least one of the plurality of scanning electrodes and the plurality of sustaining electrodes into a plurality of groups, and applying pulses having different phases to the at least one of the plurality of scanning electrodes and the plurality of sustaining electrodes in different groups, thereby causing sustaining discharge.
Claim 8
Independent Claim
182 words
A method for driving a gas discharge display apparatus including a first substrate and a second substrate located opposed to each other with a discharge space interposed therebetween to form an outer casing; a first electrode group including a plurality of scanning electrodes and a plurality of sustaining electrodes located parallel to each other on an inner face of the first substrate, each of the plurality of scanning electrodes and each of the plurality of sustaining electrodes forming a pair; a dielectric layer covering the first electrode group; and a second electrode group including a plurality of data electrodes located parallel to one another on an inner face of the second substrate in a direction perpendicular to the first electrode group, the method comprising the step of: applying an erasing pulse having an instantaneous voltage which changes slowly in one of an increasing manner and a decreasing manner to at least one of the plurality of scanning electrodes and the plurality of sustaining electrodes, thereby increasing a voltage between the scanning electrodes and the sustaining electrodes slowly to perform an erasing operation.
Claim 9
Dependent Claim
47 words
A method for driving a gas discharge display apparatus according to claim 8, wherein a time period required for the instantaneous voltage of the erasing pulse to change between 10% and 90% of an amplitude thereof is set to be between 10 µs and 10 ms inclusive.
Claim 10
Dependent Claim
133 words
A gas discharge display apparatus, comprising: a plurality of data electrodes; a plurality of scanning electrodes located in a direction perpendicular to the plurality of data electrodes; a plurality of switching devices withstanding a high voltage, the switching devices respectively having first main electrodes which are connected to the plurality of scanning electrodes respectively and independently; a plurality of reverse conductive diodes connected in parallel to the plurality of switching devices, respectively; a scanning logic circuit connected to a control electrode of each of the plurality of switching devices; and a push-pull circuit withstanding a high voltage which has an output connected to a second main electrode of each of the plurality of switching devices and to a common line which is a basis of a signal level in the scanning logic circuit.
Claim 11
Dependent Claim
41 words
A gas discharge display apparatus according to claim 10, wherein the plurality of switching devices are each an n-channel MOSFET withstanding a high voltage, and the plurality of reverse conductive diodes are each a parasitic diode formed in each n-channel MOSFET.
Claim 12
Dependent Claim
25 words
A gas discharge display apparatus according to claim 10, wherein the plurality of switching devices are each an npn bipolar transistor withstanding a high voltage.
Claim 13
Independent Claim
234 words
A method for driving a gas discharge display apparatus including a first substrate and a second substrate located opposed to each other with a discharge space interposed therebetween to form an outer casing; a first electrode group including a plurality of scanning electrodes and a plurality of sustaining electrodes located parallel to each other on an inner face of the first substrate, each of the plurality of scanning electrodes and each of the plurality of sustaining electrodes forming a pair; a dielectric layer covering the first electrode group; and a second electrode group including a plurality of data electrodes located parallel to one another on an inner face of the second substrate in a direction perpendicular to the first electrode group, the method comprising: a writing step of applying a writing pulse to the plurality of data electrodes and applying a scanning pulse having an opposite polarity to the polarity of the writing pulse to the plurality of scanning electrodes; a sustaining step of applying a sustaining pulse to the plurality of sustaining electrodes and the plurality of scanning electrodes; and an erasing step of applying an erasing pulse, wherein, prior to the writing step, an initiating step is performed of applying an initiating pulse having a prescribed polarity to prescribed electrodes selected from the group consisting of the plurality of data electrodes, the plurality of sustaining electrodes and the plurality of scanning electrodes.
Claim 14
Dependent Claim
57 words
A method for driving a gas discharge display apparatus according to claim 13, wherein the initiating step includes the step of applying an initiating pulse having an opposite polarity to the polarity of the scanning pulse applied in the writing step to at least one of the plurality of scanning electrodes and the plurality of sustaining electrodes.
Claim 15
Dependent Claim
47 words
A method for driving a gas discharge display apparatus according to claim 13, wherein the initiating step includes the step of applying an initiating pulse having an opposite polarity to the polarity of the writing pulse applied in the writing step to the plurality of data electrodes.
Claim 16
Dependent Claim
47 words
A method for driving a gas discharge display apparatus according to claim 13, wherein a time period required for the instantaneous voltage of the initiating pulse to change between 10% and 90% of an amplitude thereof is set to be between 5 µs and 10 ms inclusive.
Claim 17
Dependent Claim
64 words
A method for driving a gas discharge display apparatus according to claim 14, wherein the initiating step includes the step of applying an assisting pulse to the plurality of scanning electrodes and the plurality of sustaining electrodes, the assisting pulse having an identical polarity and an identical amplitude with the polarity and the amplitude of the initiating pulse to the plurality of data electrodes.
Claim 18
Dependent Claim
64 words
A method for driving a gas discharge display apparatus according to claim 15, wherein the initiating step includes the step of applying an assisting pulse to the plurality of data electrode, the assisting pulse having an identical polarity and an identical amplitude with the polarity and the amplitude of the initiating pulse to the plurality of scanning electrodes and the plurality of sustaining electrodes.
Claim 19
Dependent Claim
45 words
A method for driving a gas discharge display apparatus according to claim 17, wherein a time period required for the instantaneous voltage of the initiating pulse to change between 10% and 90% of an amplitude thereof is set between 5 µs and 10 ms inclusive.
Claim 20
Dependent Claim
45 words
A method for driving a gas discharge display apparatus according to claim 18, wherein a time period required for the instantaneous voltage of the initiating pulse to change between 10% and 90% of an amplitude thereof is set between 5 µs and 10 ms inclusive.
Claim 21
Dependent Claim
131 words
An image display apparatus, comprising: a large screen including a plurality of image display panels arranged two dimensionally, the plurality of image display panels each including a plurality of display units in a plurality of lines and a plurality of columns, the plurality of display units each acting as a pixel, wherein the plurality of display units are arranged at an equal distance in a direction of the lines and a direction of the columns in each of the plurality of image display panels, and the display unit in a peripheral area of the corresponding image display panel which is most proximate to the adjacent image display panel is shorter than the other display units in at least one of the direction of the lines and the direction of the columns.
Claim 22
Dependent Claim
104 words
An image display apparatus, comprising: an image display panel including a flat outer casing having a rectangular light-transmitting front wall and electrodes for display sealed in the image display panel, the image display panel further having an image display area surrounded by a non-display area having a shape of a rectangular frame and set on the front wall; and a rectangular transparent plate laminated on an outer face of the front wall, wherein an outer periphery of a front face of the transparent plate corresponding to the non-display area has such a shape as to allow the outer periphery to act as a lens.
References Cited (Backward Citations)
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