WO1999034606A1 - Image display - Google Patents
Image display Download PDFInfo
- Publication number
- WO1999034606A1 WO1999034606A1 PCT/JP1998/005731 JP9805731W WO9934606A1 WO 1999034606 A1 WO1999034606 A1 WO 1999034606A1 JP 9805731 W JP9805731 W JP 9805731W WO 9934606 A1 WO9934606 A1 WO 9934606A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- image display
- phosphor
- irradiation position
- electron beam
- light emission
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/16—Picture reproducers using cathode ray tubes
- H04N9/28—Arrangements for convergence or focusing
Definitions
- the present invention relates to an image display device used for a color television receiver, a terminal display of a computer, and the like. Background art
- FIG. 6 is a schematic exploded perspective view of an image display device according to the related art.
- the image display device according to this prior art includes a rear electrode 1, a group of linear cathodes 2 as a beam source, a beam extraction electrode 3, a control electrode 4, a focusing electrode 5, and a horizontal deflection electrode in order from the rear to the anode side. 6, a vertical deflection electrode 7 and a screen 8 are arranged, and these are housed inside a vacuum container (not shown).
- the line cathode group 2 as a beam source is configured by extending a plurality of line cathodes in the horizontal direction so as to generate electron beams distributed linearly in the horizontal direction. There are a plurality provided at predetermined intervals.
- the interval between the respective line cathodes in the vertical direction is 5.5 mm, the number thereof is 19, and each line cathode is 2a to 2s.
- FIG. 6 shows only four linear cathodes 2a to 2d to avoid complicating the drawing.
- Each of these line cathodes 2a to 2s is formed by, for example, applying an oxide cathode material to the surface of a tungsten wire having a diameter of 10 to 30 / zm.
- the back electrode 1 has a function of suppressing generation of an electron beam from a line cathode other than a predetermined line cathode and pushing the electron beam only in the anode direction.
- a vacuum vessel is not shown in FIG. 6, in some cases, the back electrode 1 may be used to form a structure integrated with the vacuum vessel.
- the beam extraction electrode 3 is configured using a conductive plate 11 having a plurality of through holes 10, and divides the electron beam emitted from the linear cathode group 2 into a plurality of pieces through the through holes 10 in the horizontal direction. It has a function to take out.
- a large number of the electrodes are provided on the conductive plate 11 at equal pitches in the horizontal direction facing the through-holes 10 and the field line cathodes 2a to 2s.
- the horizontal pitch of the through holes 10 is 1.28 mm, and the number of the through holes 10 is 107.
- the control electrode 4 is configured using 107 vertically long conductive plates 15 each having a through hole 14 at a position facing each through hole 10 of the beam extraction electrode 3. However, in FIG. 6, only nine conductive plates 15 are shown to avoid complicating the drawing. In the control electrode 4, the passing amount of the electron beam divided into 107 sections in the horizontal direction is simultaneously modulated based on the video signal corresponding to each section.
- each pixel is composed of three primary colors (phosphor) of R (red), G (green), and B (blue).
- the corresponding six signals of 2 (pixels) X 3 are sequentially added in a time-division manner (within one horizontal scanning period) in synchronization with horizontal deflection described later.
- the focusing electrode 5 is configured using a conductive plate 17 having a plurality of through holes 16 and has a function of focusing an electron beam.
- This conductive plate 1 7 Has a through-hole 16 at a position facing each through-hole 14 provided in the control electrode 4.
- the horizontal deflection electrode 6 is composed of a pair of comb-like conductive plates 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18 that are respectively arranged along both horizontal sides of the through-hole 16 formed in the focusing electrode 5.
- the electron beam which is divided into 107 horizontal sections, is simultaneously deflected in the horizontal direction, and two sets of R, G, and B primary color phosphor stripes on a screen 8 described later are combined. It functions to emit light in six stages.
- the vertical deflection electrode 7 uses a pair of comb-shaped conductive plates 19, 19 ′ that are horizontally arranged at respective intermediate positions in the vertical direction of the through holes 16 formed in the focusing electrode 5. It is configured. A vertical deflection voltage is applied to both conductive plates 19, 19 ', whereby vertical deflection electrode 7 deflects the electron beam in the vertical direction.
- the electron beams emitted from the 19 line cathodes 2 a to 2 s are each deflected by 12 steps, that is, by 12 horizontal scanning lines, and the electron beams are vertically shifted on the screen 8 by 2 2 8 lines. Drawing a horizontal scan line
- the horizontal deflection electrode 6 and the vertical deflection electrode 7 are configured to extend in a comb shape, respectively. Furthermore, since the distance to the screen 8 is set longer than the distance between the horizontal and vertical deflection electrodes, it is possible to irradiate the electron beam to an arbitrary position on the screen 8 with a small amount of deflection. It becomes possible. Therefore, with such a configuration, deflection distortion can be reduced both horizontally and vertically.
- the screen 8 is composed of a glass plate. On the back of the glass plate, R, G, and B primary color phosphors, which emit light when irradiated with an electron beam, pass through a black guard band (black matrix). Striped It is applied, and a metal back is added on these black guard band (black matrix).
- dashed lines drawn on the screen 8 indicate vertical divisions displayed corresponding to each of the plurality of line cathodes 2 a to 2 s, and a two-dot chain line indicates a control electrode. 4 shows horizontal divisions displayed corresponding to each of the plurality of conductive plates 15 constituting 4.
- two sections are separated horizontally by two sections (dashed line and two-dot chain line).
- 0 R, 20 G, and 20 B are applied in stripes in the vertical direction via black guard bands 22, and 12 horizontal lines are formed in the vertical direction.
- the size of one section is 1.0 mm in the horizontal direction and 4.4 mm in the vertical direction.
- the dimension ratio in the vertical and horizontal directions is different from the image displayed on the actual screen for convenience of explanation.
- the present invention has been made to solve such a problem, and detects a relative position of a beam spot with respect to a phosphor stripe, and performs correction based on the detected value, so that screens caused by various causes can be obtained.
- the position of the beam spot with respect to the phosphor stripe on the screen It is an object to provide an image display device that does not cause image quality deterioration such as color misregistration.
- an image display device comprises: an emission source of an electron beam; a display screen having a phosphor layer in which phosphors are formed in a predetermined pattern via black matrix;
- An image display apparatus comprising: an electron beam orbit control unit having a function of selectively irradiating an electron beam to a predetermined position of the phosphor layer, wherein a predetermined unit for vibrating the electron beam is oscillated.
- the electron beam irradiated onto the predetermined phosphor layer is vibrated, and the light emission amount at a predetermined position of the phosphor layer that emits light by the vibrating electron beam is determined.
- the displacement between the flat electrode group and the screen due to the thermal expansion of the constituent members during operation which is a problem in the conventional technology, or the environmental magnetic field (installation)
- the displacement of the beam spot position with respect to the phosphor stripe on the screen due to the displacement of the beam trajectory between the flat electrode group and the screen due to the geomagnetism of the place can be suppressed.
- image quality deterioration such as color misregistration caused by such misregistration.
- the deviation of the electron beam is detected.
- the light emission amount of the phosphor layer at the offset position is preferably compared.
- the means for recognizing the deviation of the electron beam gives a predetermined offset to a beam trajectory vibrating with respect to the center of the phosphor layer at a predetermined position. It is preferable that the light emission amount of the phosphor layer at the offset position is compared with an appropriate light emission amount of the phosphor layer at the offset position.
- the means for detecting the amount of light emitted from the phosphor layer has a configuration using a PIN photodiode.
- FIG. 1 is a configuration diagram of an image display device according to an embodiment of the present invention.
- FIG. 2 is a diagram for explaining the principle of beam irradiation position detection in the image display device according to the embodiment of the present invention (when there is no shift in the beam irradiation position on the phosphor stripe).
- FIG. 3 is a diagram for explaining the principle of beam irradiation position detection in the image display device according to the embodiment of the present invention (when the beam irradiation position on the phosphor stripe is shifted to the left for some reason). .
- FIG. 4 is a diagram for explaining the principle of beam irradiation position detection in the image display device according to the embodiment of the present invention (when the beam irradiation position on the phosphor stripe is shifted to the right for some reason). .
- FIG. 5 is an exploded perspective view of an image display device according to another embodiment of the present invention.
- FIG. 6 is an exploded perspective view of an image display device according to the related art.
- FIG. 7 is an enlarged view of one section on the phosphor screen of the screen constituting the image display device shown in FIG. BEST MODE FOR CARRYING OUT THE INVENTION
- FIG. 1 is an exploded perspective view of a schematic configuration of an image display device according to an embodiment of the present invention, and a setting position of a beam irradiation position detection unit in the image display device, and a beam trajectory according to the beam irradiation position at the setting position.
- Fig. 5 shows a block diagram of a feedback loop for controlling the feedback control.
- FIGS. 2 to 4 are diagrams for explaining the principle of beam irradiation position detection in the image display device shown in FIG. 1. Specifically, FIG. 2 is a partially enlarged view of the image display area. It is a thing.
- the image display device (electrode configuration and screen, etc.) according to the present embodiment shown in FIGS. 1 to 4 is basically the same as the image display device according to the prior art (see FIG. 6). It has a configuration.
- the present embodiment is different from the image display device according to the related art in that the image display device is configured to eliminate the displacement of the beam spot position with respect to the phosphor stripe on the screen caused by various causes. different.
- Region A in FIG. 1 indicates a beam irradiation position detection unit.
- the lower left end (A region) of the image display area of the screen 8 is used as a beam irradiation position detection unit, and the beam irradiated here is used as a beam irradiation position detection beam.
- this beam irradiation position detection beam includes a beam trajectory that causes an equal amount of fine movement to the left and right with respect to the center of the phosphor stripe, which is the original irradiation position of this beam. Fiichi There is an offset that reverses the polarity for each field.
- the primary color phosphor stripes 20 R, 20 G, and 20 B (as phosphor cells) of R, G, and B are connected via black guard bands (black stripes) 22.
- the arrangement is the same as the configuration of the image display device according to the related art.
- region B shown in FIGS. 2 to 4 indicates a normal image display unit
- region A indicates a beam irradiation position detection unit. As described above (see FIG. 1), the area A is located at the lower left end of the image display area.
- La denotes the beam spot of the beam for detecting the beam irradiation position in the odd field, and the offset is given to the left with respect to the original trajectory of this beam.
- Lb indicates the beam spot of the beam for detecting the beam irradiation position in the even field, and the offset is given to the right of the original trajectory of this beam.
- P a represents the light emission amount generated by irradiating the phosphor stripe with the beam irradiation position detection beam (L a) in the odd field
- P b represents the beam irradiation position detection beam (E) in the even field.
- L b) represents the amount of light emitted when the phosphor stripe is irradiated.
- FIG. 2 shows the irradiation state of the beam for detecting the beam irradiation position on the phosphor stripe when there is no shift in the beam irradiation position on the phosphor stripe.
- FIG. 3 shows the beam irradiation position on the phosphor stripe.
- Fig. 4 shows the irradiation state of the beam irradiation position detection beam on the phosphor stripe when the beam is shifted to the left for some reason.
- Fig. 4 shows that the beam irradiation position on the phosphor stripe is shifted to the right for some reason. This shows the irradiation state of the beam irradiation position detection beam onto the phosphor strip when the beam is shifted.
- the light emission amount Pa is smaller than the light emission amount Pb (Pa then Pb).
- the light emission amount Pa is larger than the light emission amount Pb (Pa> Pb).
- the light emission amount Pa and Pb in each state as shown in FIGS. 2 to 4 are detected, and the light emission amount Pa and the light emission amount Pb are compared. It is possible to know the presence or absence of the deviation and the direction of the deviation. Then, the result of the comparison between the light emission amount Pa and the light emission amount Pb is fed back to the beam trajectory in the horizontal direction, so that the deviation of the beam irradiation position on the phosphor stripe can be corrected.
- the offset component described above (the offset component whose polarity is inverted for each field for fine movement of the beam irradiation position detection beam to the left and right) is stored.
- the field buckle shown in Fig. 1 moves the beam for detecting the beam irradiation position in each field by the same amount to the right and left with respect to the center of the phosphor stripe, and the polarity of each field is changed.
- An addition circuit 32 for adding to the horizontal deflection signal Sh and this beam The PIN photodiode 33 as a means to detect the amount of light emitted by the beam for detecting the irradiation position, and the amount Pa of light emitted by the beam for detecting the beam irradiation position in the odd field are sampled, and one field is sampled.
- Sample hold circuit 34 4 a for holding for the above period and sampled light amount P b for the beam irradiation position detection beam in the even field as well, and hold for one or more fields
- a comparator that outputs a beam irradiation position shift signal Sd whose polarity is inverted (the absolute value is constant) according to the result is compared with the light emission amount Pb of the beam irradiation position detection beam Pb (infinite gain).
- a differential amplifying circuit) 35 for generating a beam position control signal Sc that continues to rise or fall at a predetermined speed according to the polarity of the output voltage of the comparator 35;
- An adding circuit 37 for adding the beam position control signal Sc to the horizontal deflection signal Sh (applied to the horizontal deflection electrode, which is a horizontal beam trajectory control means); and a beam trajectory added to the horizontal deflection signal Sh.
- the operation of the feedback loop configured as described above (controlling the beam trajectory according to the detection result of the beam irradiation position) will be described with reference to FIGS. 2 to 4 in addition to FIG.
- the beam trajectory offset signal Sw generated from the beam trajectory offset signal generation circuit 31 is added to the horizontal deflection signal Sh to irradiate the beam irradiation position detection beam onto the phosphor stripe.
- the beam irradiation position on the phosphor stripe is shifted to the left for some reason, that is, the state of Fig. 3 is explained. .
- the relation between the light emission amount Pa of the beam irradiation position detection beam in the odd field and the light emission amount Pb of the beam irradiation position detection beam in the even field is such that the light emission amount Pa emits light Amount P b (P a then P b :). Therefore, the beam irradiation position shift signal Sd output from the comparator 35 has a positive polarity, and the beam position control signal Sc output from the integration circuit 36 starts to rise.
- the phosphor The beam irradiation position on the stripe starts moving rightward as the beam position control signal Sc rises. This movement occurs at the moment when the polarity of the beam irradiation position shift signal S d changes from positive to negative, that is, when the beam irradiation position on the phosphor stripe shifts to the left and passes through the center position of the phosphor stripe to the right. It continues until the moment when it changes to the state shifted to.
- the beam irradiation position shifted leftward with respect to the phosphor stripe moves rightward and finally converges to the center of the phosphor stripe as shown in FIG.
- the beam irradiation position shift signal S d output from the comparator 35 becomes negative, and the integration circuit 3 Since the beam position control signal Sc output from 6 starts descending, the beam irradiation position moves to the left and finally converges to the center of the phosphor stripe as shown in FIG.
- error detection that is, comparison of the light emission amounts Pa and Pb of the beam for detecting the beam irradiation position is performed discretely using the sample and hold circuits 34a and 34b.
- the control output that is, the beam position control signal Sc output from the integration circuit 36.
- the output of the integration circuit 36 does not stop and continues to rise or fall. Become. Then, even when the beam irradiation position is converged on the center of the phosphor stripe, strictly speaking, the beam irradiation position is in a state of slightly oscillating left and right.
- the amplitude is determined by the sampling period of the beam emission amount for beam irradiation position detection by the sample and hold circuits 34 a and 34 b, the time constant of the integrating circuit 36, the gain of the horizontal deflection electrode drive circuit 39, and the horizontal deflection electrode 6. It is determined by the moving speed of the beam on the screen determined by the deflection sensitivity and the like.
- the light emission amount p a of the field period 1 Z 6 0 seconds or beam irradiation position detection beam, a comparison cycle of P b and 1 Z 3 0 seconds, the beam moving speed on the screen, the fluorescence at 1 0 seconds If the time constant or the like of the integrating circuit is set to a value that moves the distance corresponding to the body stripe width, the amplitude becomes 1 Z300 of the phosphor stripe width, and there is substantially no problem. Further, if a hold circuit is provided between the integration circuit 36 and the addition circuit 37 to hold the beam position control signal Sc for two field periods, such a small beam irradiation position can be obtained. It goes without saying that vibration can be completely eliminated. Therefore, in some cases, it is preferable to provide a hold circuit between the integrating circuit 36 and the adding circuit 37 to hold the beam position control signal Sc for two field periods.
- the beam trajectory offset signal Sw generated by the beam trajectory offset signal generation circuit 31 is added to the horizontal deflection signal Sh.
- the beam irradiation position detection unit A the beam irradiation position on the phosphor stripe (as a predetermined phosphor cell) is finely moved left and right with respect to the center of the phosphor stripe, so that a predetermined offset is set in the beam trajectory. Can be given. Then, by detecting and comparing the light emission amounts Pa and Pb generated by irradiating the phosphor stripes with this beam, it is possible to determine whether or not there is a shift in the beam irradiation position on the phosphor stripes and the direction.
- the beam for beam irradiation position detection is set at the lower left end of the image display area.
- the beam irradiation position detection beam may be set at another position such as the lower right end or upper right end of the image display area.
- the present invention is not limited to this.
- two or more beams are used. It may be used as a beam for detecting a beam irradiation position.
- the beam irradiation position detection Deyo beam is set at a plurality of image display areas, it is possible to detect more accurately an average beam irradiation position of the image display area entire 0
- the phosphor pattern is not limited to the vertical stripe pattern, and may be an array pattern of phosphor cells of various shapes such as a rectangle and a circle.
- the present invention is not limited to this configuration, and the principle of the present invention is to reduce the beam irradiation position shift in the vertical direction. It goes without saying that adaptation is also possible.
- the electron beam emitted from the electron emission source configured using the back electrode 1, the line cathode group 2, the beam extraction electrode 3, and the control electrode 4 is converted to the focusing electrode 5, the horizontal deflection
- the image display device (see FIG. 1) that focuses and deflects using the electrode 6 and the vertical deflection electrode 7 and irradiates the phosphor on the screen 8 to display an image
- the present invention is limited to this configuration. Not something. Therefore, for example, the present invention can be applied even if the image display device has a configuration as shown in FIG.
- An electrode 42 having a function of deflecting and converging a beam including a first comb-like electrode 42a and a second comb-like electrode 42b on an insulating substrate 42c) and an electron A phosphor layer 43 that emits light when excited by a beam, and a vacuum vessel that contains the electron emission source 41, the electrode 42, and the phosphor layer 43 and holds the inside thereof in a vacuum state It is configured using 4 and 4. That is, in the present embodiment, as shown in FIG.
- the horizontal deflection electrode 6 constituting the image display device is controlled using a feedback loop to eliminate the deviation of the electron beam in the horizontal direction.
- the electrode 42 is controlled by using a feedback loop as shown in FIG. It is possible to eliminate the deviation of the electron beam in both directions. That is, an image having the configuration shown in Fig. 5
- the present invention can be applied to a display device, and the same effects as those of the above-described embodiment can be obtained.
- the electron beam is finely moved, and the light emission amounts of the two portions of the phosphor layer irradiated by the finely moved electron beam are detected and compared, and the deviation of the electron beam is determined based on the comparison.
- the image display device having a configuration for performing recognition and correction has been described, the present invention is not limited to this configuration. Therefore, for example, the amount of light emitted from the phosphor layer irradiated by the finely moved electron beam is detected at only one location, and the appropriate amount of emitted light at that location is measured in advance. And an image display device configured to recognize and correct the deviation of the electron beam based on the comparison.
- the present invention is directed to a case where a predetermined offset is given to a beam trajectory for slightly moving a beam irradiation position on a predetermined phosphor cell (here, a phosphor stripe) with respect to the center of the phosphor cell.
- a means is provided for comparing the light emission amount of the phosphor cell of the present invention with the light emission amount of the phosphor cell when an offset in the opposite direction to the offset of the beam orbit is provided.
- the heat of components during operation which was a problem in the prior art, was Phosphor stripes on the screen due to misalignment between the flat electrode group and the screen due to expansion, or misalignment of the beam trajectory between the flat electrode group and the screen due to environmental magnetic fields (such as geomagnetism at the installation site) It is possible to suppress the occurrence of the deviation of the beam spot position with respect to. As a result, it is possible to eliminate image quality deterioration such as color misregistration caused by such misregistration.
- the image display device of the present invention can be widely used for a color television receiver, a terminal display of a computer, and the like.
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/367,582 US6184627B1 (en) | 1997-12-24 | 1998-12-17 | Image display |
DE69833877T DE69833877T2 (de) | 1997-12-24 | 1998-12-17 | Bildanzeigevorrichtung |
EP98959223A EP0963121B1 (en) | 1997-12-24 | 1998-12-17 | Image display |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9/355383 | 1997-12-24 | ||
JP9355383A JPH11185671A (ja) | 1997-12-24 | 1997-12-24 | 画像表示装置 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1999034606A1 true WO1999034606A1 (en) | 1999-07-08 |
Family
ID=18443622
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1998/005731 WO1999034606A1 (en) | 1997-12-24 | 1998-12-17 | Image display |
Country Status (5)
Country | Link |
---|---|
US (1) | US6184627B1 (ja) |
EP (1) | EP0963121B1 (ja) |
JP (1) | JPH11185671A (ja) |
DE (1) | DE69833877T2 (ja) |
WO (1) | WO1999034606A1 (ja) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB0006762D0 (en) * | 2000-03-22 | 2000-05-10 | Smiths Industries Plc | Displays |
KR100343205B1 (ko) * | 2000-04-26 | 2002-07-10 | 김순택 | 카본나노튜브를 이용한 삼극 전계 방출 어레이 및 그 제작방법 |
US6680579B2 (en) * | 2001-12-14 | 2004-01-20 | Hewlett-Packard Development Company, L.P. | Method and apparatus for image and video display |
KR20050104649A (ko) * | 2004-04-29 | 2005-11-03 | 삼성에스디아이 주식회사 | 전자 방출 표시장치 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60191578A (ja) * | 1984-03-12 | 1985-09-30 | Matsushita Electric Ind Co Ltd | 画像表示装置 |
JPS6469188A (en) * | 1987-09-10 | 1989-03-15 | Matsushita Electric Ind Co Ltd | Adjustment method for color image display device |
JPH0468791A (ja) * | 1990-07-05 | 1992-03-04 | Matsushita Electric Ind Co Ltd | 画像表示装置 |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB871155A (en) * | 1957-08-15 | 1961-06-21 | Sylvania Thorn Colour Television Laboratories Ltd | Improvements in and relating to colour television receivers |
NL254371A (ja) * | 1959-08-05 | |||
US3784735A (en) * | 1972-03-29 | 1974-01-08 | Bell Telephone Labor Inc | Color television with control of a wobbling beam |
US4077054A (en) * | 1977-02-17 | 1978-02-28 | Rca Corporation | System for modulating a flat panel image display device |
KR850000970B1 (ko) * | 1981-02-10 | 1985-07-02 | 야마시다 도시히꼬 | 화상표시 장치 |
JPS5884581A (ja) * | 1981-11-16 | 1983-05-20 | Matsushita Electric Ind Co Ltd | 画像表示装置 |
JP2754546B2 (ja) | 1987-12-25 | 1998-05-20 | 松下電器産業株式会社 | 画像表示装置 |
JPH01296543A (ja) | 1988-05-23 | 1989-11-29 | Matsushita Electric Ind Co Ltd | 画像表示装置 |
US5017842A (en) * | 1990-05-03 | 1991-05-21 | Matsushita Electric Industrial Co., Ltd. | Image display apparatus |
JPH0494044A (ja) * | 1990-08-10 | 1992-03-26 | Matsushita Electric Ind Co Ltd | 平板型表示装置 |
KR100286828B1 (ko) * | 1996-09-18 | 2001-04-16 | 니시무로 타이죠 | 플랫패널표시장치 |
-
1997
- 1997-12-24 JP JP9355383A patent/JPH11185671A/ja active Pending
-
1998
- 1998-12-17 WO PCT/JP1998/005731 patent/WO1999034606A1/ja active IP Right Grant
- 1998-12-17 EP EP98959223A patent/EP0963121B1/en not_active Expired - Lifetime
- 1998-12-17 DE DE69833877T patent/DE69833877T2/de not_active Expired - Fee Related
- 1998-12-17 US US09/367,582 patent/US6184627B1/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60191578A (ja) * | 1984-03-12 | 1985-09-30 | Matsushita Electric Ind Co Ltd | 画像表示装置 |
JPS6469188A (en) * | 1987-09-10 | 1989-03-15 | Matsushita Electric Ind Co Ltd | Adjustment method for color image display device |
JPH0468791A (ja) * | 1990-07-05 | 1992-03-04 | Matsushita Electric Ind Co Ltd | 画像表示装置 |
Non-Patent Citations (1)
Title |
---|
See also references of EP0963121A4 * |
Also Published As
Publication number | Publication date |
---|---|
EP0963121B1 (en) | 2006-03-15 |
EP0963121A1 (en) | 1999-12-08 |
DE69833877D1 (de) | 2006-05-11 |
JPH11185671A (ja) | 1999-07-09 |
EP0963121A4 (en) | 2004-06-23 |
US6184627B1 (en) | 2001-02-06 |
DE69833877T2 (de) | 2006-08-17 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US4635106A (en) | Beam index color cathode ray tube with color-identifying patterns of stripes disposed in beam run-in area of display surface | |
US4451852A (en) | Image display apparatus | |
WO1999034606A1 (en) | Image display | |
JPH0821336B2 (ja) | 平板形陰極線管 | |
US6304034B1 (en) | Cathode ray tube and image correcting method | |
US4933604A (en) | Plate-type cathode ray tube device | |
JPS58103754A (ja) | ビ−ムランデイング誤差補償装置 | |
US6545435B2 (en) | Cathode ray tube and signal detecting method in cathode ray tube | |
JP3449085B2 (ja) | 映像表示装置 | |
JP2558462B2 (ja) | 平板形陰極線管の駆動方法 | |
JPH05347776A (ja) | 垂直ランディングズレ量測定装置 | |
JPH05334970A (ja) | 画像表示装置 | |
JPH04251890A (ja) | 画像表示装置の電極精度および蛍光体精度の評価装置 | |
JPH0334716B2 (ja) | ||
JP2000032485A (ja) | 画像表示装置 | |
JPH089300A (ja) | 画像評価装置 | |
JPH11204068A (ja) | 画像表示装置 | |
JPH074015B2 (ja) | カラ−画像表示装置 | |
JPH08317412A (ja) | 陰極線管制御装置 | |
JPH05191846A (ja) | 画像表示装置の水平ランディング自動調整方法 | |
KR20030067132A (ko) | 수평 편향전압 장치 | |
JPH02162891A (ja) | 画像表示装置 | |
JP2001289623A (ja) | 電子ビーム位置検出方法、電子ビーム位置検出素子、並びに陰極線管 | |
JPH0355989A (ja) | 画像表示装置 | |
JP2002245955A (ja) | 電子ビーム位置検出機構及び陰極線管 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): US |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 09367582 Country of ref document: US |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1998959223 Country of ref document: EP |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWP | Wipo information: published in national office |
Ref document number: 1998959223 Country of ref document: EP |
|
WWG | Wipo information: grant in national office |
Ref document number: 1998959223 Country of ref document: EP |