WO2011105062A1 - 画像表示装置 - Google Patents
画像表示装置 Download PDFInfo
- Publication number
- WO2011105062A1 WO2011105062A1 PCT/JP2011/001004 JP2011001004W WO2011105062A1 WO 2011105062 A1 WO2011105062 A1 WO 2011105062A1 JP 2011001004 W JP2011001004 W JP 2011001004W WO 2011105062 A1 WO2011105062 A1 WO 2011105062A1
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- WIPO (PCT)
- Prior art keywords
- substrate
- image display
- circuit
- display device
- side connection
- Prior art date
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Classifications
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J11/00—Gas-filled discharge tubes with alternating current induction of the discharge, e.g. alternating current plasma display panels [AC-PDP]; Gas-filled discharge tubes without any main electrode inside the vessel; Gas-filled discharge tubes with at least one main electrode outside the vessel
- H01J11/10—AC-PDPs with at least one main electrode being out of contact with the plasma
- H01J11/12—AC-PDPs with at least one main electrode being out of contact with the plasma with main electrodes provided on both sides of the discharge space
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1345—Conductors connecting electrodes to cell terminals
- G02F1/13452—Conductors connecting driver circuitry and terminals of panels
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/313—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being gas discharge devices
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J11/00—Gas-filled discharge tubes with alternating current induction of the discharge, e.g. alternating current plasma display panels [AC-PDP]; Gas-filled discharge tubes without any main electrode inside the vessel; Gas-filled discharge tubes with at least one main electrode outside the vessel
- H01J11/20—Constructional details
- H01J11/46—Connecting or feeding means, e.g. leading-in conductors
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/14—Structural association of two or more printed circuits
- H05K1/147—Structural association of two or more printed circuits at least one of the printed circuits being bent or folded, e.g. by using a flexible printed circuit
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/05—Flexible printed circuits [FPCs]
- H05K2201/053—Tails
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
- H05K2201/10007—Types of components
- H05K2201/10128—Display
Definitions
- the present invention relates to an image display apparatus using a flat image display device, and more particularly to a technique of a flexible substrate for connecting an image display device and a circuit board.
- a large number of electrodes extend in the row and column directions on the substrate surface made of glass or the like.
- a plurality of pixels are arranged in a matrix corresponding to the intersection positions of the electrodes.
- image display devices are electrically connected to a drive circuit board using a flexible substrate (Flexible Printed Circuits) and used as an image display device.
- a voltage is applied to each electrode of the image display device from the drive circuit board side based on a predetermined drive voltage waveform through the flexible substrate, thereby realizing image display.
- a PDP generally has a rectangular display surface. Usually, electrode terminals of data electrodes are provided on both sides of the long side, electrode terminals of scanning electrodes are provided on one short side end, and the other short side part is provided. On the other side, the electrode terminals of the sustain electrodes are respectively provided. A flexible substrate is attached to each electrode terminal (see, for example, Patent Document 1).
- the number of electrode terminals of the scanning electrode is equal to the number of pixels arranged in the column direction.
- the image display device is required to be downsized and compact, and the circuit board is also required to be downsized.
- the number of connectors on the circuit board that are electrically connected to the electrodes also increases. Therefore, it is difficult to reduce the size of the board.
- the flexible boards are interlaced on the circuit board, increasing the man-hours for assembling the image display device.
- the variation in impedance characteristics accompanying each flexible substrate and the impedance value increase, and as a result, distortion is superimposed on the drive waveform applied to the image display device, and the image The display quality will be degraded.
- the present invention has been made in view of the above problems, and uses a flexible substrate for an image display device and a circuit board on which a drive circuit is mounted even if it is a high-definition or large-screen image display device. It is an object of the present invention to provide an image display apparatus that can be expected to have excellent image display characteristics and downsizing of the apparatus by being easily and compactly electrically connected.
- an image display apparatus is an image display apparatus in which an image display device and a circuit board are electrically connected by a flexible board, and the flexible board includes: , Having a common substrate portion and a first substrate portion and a second substrate portion branched from the common substrate portion, and when the surface of the flexible substrate is viewed in plan, the first substrate portion and the second substrate portion A plurality of wirings are juxtaposed so as to merge from each to the common substrate unit, and the common substrate unit includes a device-side connection terminal for connecting to the image display device, the first substrate unit, and the Each of the second substrate portions is formed with a circuit side connection terminal for connection to the circuit board, and each device side connection terminal is in one-to-one correspondence with each circuit side connection terminal via the wiring.
- the circuit board is electrically connected, and the circuit board is provided with a first connector on one side and a second connector on the other side, and the flexible board has at least one of the first board part and the second board part.
- An image display device in which the circuit-side connection terminal of the first board part is connected to the first connector and the circuit-side connection terminal of the second board part is connected to the second connector in a state where the board is bent. It was.
- a display device can be provided.
- Embodiment 1 of this invention It is a top view which shows the structure of the flexible substrate in Embodiment 1 of this invention. It is a perspective view which shows the state by which the flexible substrate in Embodiment 1 of this invention was bent. It is a top view which shows the structure of the flexible substrate in Embodiment 2 of this invention. It is a top view which shows the structure of the flexible substrate in Embodiment 3 of this invention. It is a top view which shows the structure of the flexible substrate in Embodiment 4 of this invention. It is a disassembled perspective view of the panel used for the plasma display apparatus in Embodiment 5 of this invention. It is a schematic diagram which shows arrangement
- FIG. 5 It is a figure which shows the drive voltage waveform applied to each electrode of the panel used for the plasma display apparatus in Embodiment 5 of this invention. It is a circuit block diagram of the plasma display apparatus in Embodiment 5 of this invention. It is a figure which shows the drive circuit mounted in the circuit board of the plasma display apparatus in Embodiment 5 of this invention. It is a disassembled perspective view which shows the structure of the plasma display apparatus in Embodiment 5 of this invention. It is an enlarged view which shows the mode of the flexible substrate of the plasma display apparatus in Embodiment 5 of this invention.
- FIG. 1 is a plan view showing the configuration of the flexible substrate 10 according to Embodiment 1 of the present invention.
- the flexible substrate 10 is a flexible substrate for electrically connecting the image display device and the drive circuit substrate.
- the flexible substrate 10 has a plurality of (here, 270) wirings 25a and 25b made of a conductive material such as copper foil formed in a stripe shape at a predetermined pitch on one surface of a flexible insulating resin film such as polyimide.
- the wiring 25a, 25b is covered with another insulating resin film (flexible film) similar to the above.
- the flexible substrate 10 includes a substrate portion 15 that occupies almost the entire area of the substrate, a panel (device) -side connection portion 11, a circuit-side connection portion 12 formed at an end of the substrate portion 15, 13.
- the substrate unit 15 is a main part of the flexible substrate 10 and includes a common substrate unit 19, a first substrate unit 16, a second substrate unit 18, and a branch unit 17.
- the first substrate unit 16 is a long substrate unit that extends from the common substrate unit 19 in the first direction (from the left side to the right side in FIG. 1).
- the second substrate portion 18 is a long substrate portion that is further extended in the first direction from the branch portion 17 that protrudes from the common substrate portion 19 in a direction that intersects the first direction. Although the longitudinal directions of the first substrate portion 16 and the second substrate portion 18 are arranged in parallel in the flexible substrate 10, they may not be strictly parallel.
- the wiring 25a extends along the longitudinal direction of the first substrate portion 16 and forms a first group arranged in parallel to each other.
- the wiring 25b extends in the longitudinal direction of the second substrate portion 18 and forms a second group arranged in parallel with each other.
- Both wirings 25a and 25b are arranged in the common substrate portion 19 so as to join at a predetermined interval (pitch).
- the pitch of the wirings 25 a and 25 b on the common substrate unit 19 is adjusted to be narrower than the pitch of the wirings 25 a and 25 b on the first substrate unit 16 and the second substrate unit 18.
- Panel-side connection terminals (device-side connection terminals) 21a and 21b formed to be externally exposed in the common substrate portion 19 are electrically connected to one end (left side of the drawing) of each wiring 25a and 25b.
- the circuit side connection terminals 22 and 23 exposed to the outside in the first substrate portion 16 and the second substrate portion 18 are electrically connected to the other end portions (right side in the drawing) of the respective wirings 25a and 25b.
- the panel-side connection terminals 21a and 21b are arranged in parallel at a predetermined pitch, and the juxtaposed area serves as a panel-side connection unit 11 connected to an electrode terminal provided on the side of an image display device such as a PDP (not shown).
- the circuit side connection terminals 22 and 23 are also juxtaposed at a predetermined pitch, and the juxtaposed areas are connected to connectors on the drive circuit board (not shown). Part 13.
- bent portion 29 shown by a one-dot chain line in FIG. 1 for bending the second substrate portion 18 and the branching portion 17 on the first substrate portion 16 side.
- each panel side connection terminal 21a, 21b in the panel side connection part 11 is matched with the pitch of the electrode terminal of the panel side connected to the said panel side connection terminal 21a, 21b.
- the pitch of the circuit side connection terminals 22 and 23 in the circuit side connection parts 12 and 13 is also matched with the pitch in the connector on the drive circuit board side.
- the pitch of the connection terminals in the connector mounted on the drive circuit board is limited by the voltage value or current value supplied to the image display device to which the voltage is applied (the occurrence of dielectric breakdown or the like in the connector). Depending on the purpose of prevention, it cannot be made smaller than a predetermined value.
- the distance between the terminals of the connector on the drive circuit board is limited by safety standards, etc., even though the electrode pitch on the device is very narrow. It becomes. For this reason, the pitch of the circuit side connection terminals 22 and 23 provided in the circuit side connection parts 12 and 13 is wider than the pitch of the panel side connection terminals 21 a and 21 b provided in the panel side connection part 11.
- the connection destination of each connection terminal is set by setting the pitch of the panel side connection terminals 21a and 21b narrower than the pitch of the connection terminals 22 and 23. It can be connected well to the image display device or the drive circuit board side.
- the number of the panel side connection terminals 21a and 21b of the panel side connection unit 11 is 270, which matches the number of the wirings 25, and the pitch between the panel side connection terminals 21a and 21b is adjusted to the image display device. Set to 26 mm.
- the number of the circuit side connection terminals 22 of the circuit side connection part 12 and the number of the circuit side connection terminals 23 of the circuit side connection part 13 are 135 each, and between the circuit side connection terminals 22 (circuit side connection terminals 23).
- the pitch is set to 0.42 mm according to the drive circuit board.
- the pitch of the circuit side connection terminals 22 and the circuit side connection terminals 23 is set wider than the pitch of the panel side connection terminals 21 a and 21 b as described above, and the distance between the wirings 25 a and 25 b is adjusted according to the change in both pitches. Is also adjusted to change.
- FIG. 2 is a perspective view showing a state when the flexible board 10 is connected to the circuit board 90.
- a connector 92 is disposed on one surface and a connector 93 is disposed on the other surface.
- the connectors 92 and 93 are disposed at positions shifted from each other with the substrate 90 interposed therebetween, in view of the layout in which the connectors are actually mounted.
- the branch part 17 and the second board part 18 are gently bent along the bent part 29 as shown in FIG.
- the circuit side connection portion 12 provided at the tip of the first substrate portion 16 is inserted into the connector 92 on the back surface of the circuit substrate 90.
- the circuit side connection portion 13 provided at the tip of the second substrate portion 18 is inserted into the connector 93 on the other surface of the circuit substrate 90.
- the first substrate portion 16 and the second substrate portion 18 are branched from each other, and are easily bent along the bent portion 29, so that the circuit side connection portions 12 and 13 can be easily connected to the circuit substrate. 90 side can be connected.
- the flexible substrate 10 does not need to be folded to the extent that the flexible substrate 10 can be folded. As shown in FIG. 2, the flexible substrate 10 is gently bent along the bent portion 29 with a gentle curvature. It also includes the state.
- the panel side connection unit 11 is connected to an image display device such as a PDP (not shown).
- the flexible substrate 10 is further provided with a portion that is once gently bent along the bent portion 29. Without bending in the direction, it can be connected to the circuit board 90 side while preventing breakage and damage and maintaining a good form, and a long life can be expected. Further, by using the flexible substrate 10 in which the pitches of the electrode terminals 21a, 21b, 12, and 13 are appropriately changed, there is no restriction on the pitch of the connection terminals in the connectors 92 and 93 on the circuit board 90. The image display device (not shown) and the circuit board 90 can be electrically connected satisfactorily.
- the pitch of the circuit side connection terminal 22 provided in the circuit side connection portion 12 and the circuit side connection terminal 23 provided in the circuit side connection portion 13 is determined by the circuit board 90 and the connector 92. , 93 is set to be wider than the pitch of the connection terminals 21a and 21b in the panel-side connection portion 11 in accordance with the restrictions on the standards. For this reason, compared with the panel side connection part 11, the total width of the circuit side connection parts 12 and 13 becomes wide. However, if the flexible board 10 is bent and the circuit side connection parts 12 and 13 are connected to the connectors 92 and 93 arranged on both sides of the circuit board 90, the pitch of the circuit side connection terminals 22 and 23 is reduced.
- the circuit side connection parts 12 and 13 which are wider than the panel side connection part 11 can be electrically connected to the drive circuit board side well.
- the circuit-side connection portion 12 Even if the total width of 13 is relatively wide, an extremely compact connection form can be formed. Accordingly, when a plurality of connectors 92, 93 are formed on the circuit board 90, the flexible boards can be connected without being so bulky even if the connectors 92, 93 are arranged to a certain extent, for example, in a row.
- a plurality of flexible boards 10 are connected to the electrode terminals on the PDP side and connected to each flexible board 10. Can be connected to the connectors 92 and 93 on the circuit board 90 in a compact manner, whereby a good electrical connection can be achieved. Furthermore, since the connectors 92 and 93 can be densely arranged in one row on each surface of the circuit board 90, the flexible board 10 can be densely connected to the board 90, which can contribute to the downsizing of the image display device.
- 270 panel-side connection terminals 21a and 21b and 135 circuit-side connection terminals 22 and 23 are used as an example of the number of connection terminals 21a, 21b, 22, and 23 provided.
- the number of circuit side connection terminals 22 and the number of circuit side connection terminals 23 are equal, and the sum of the number of circuit side connection terminals 22 and the number of circuit side connection terminals 23 is the sum. Is equal to the sum of the number of the panel-side connection terminals 21a and 21b.
- the number of arrangements is not limited to these numerical values and their relationship.
- the number of circuit-side connection terminals 22 and circuit-side connection terminals 23 may be different from each other, and the sum of the number of circuit-side connection terminals 22 and the number of circuit-side connection terminals 23 is determined as the panel side connection. It is not necessary to match the number of connecting terminals 21a and 21b. A dummy terminal can also be included. For example, when the circuit side connection portion 12 and the circuit side connection portion 13 include dummy connection terminals, the sum of the number of circuit side connection terminals 22 and the number of circuit side connection terminals 23 is calculated. It is also possible to set more than the number of panel side connection terminals 21a and 21b.
- a plurality of integrated circuits for generating drive voltage waveforms to be applied to the electrodes of the image display device are mounted on the drive circuit board, and for example, 90 drive voltage waveforms are generated from one integrated circuit. Assume that it is output.
- the number of circuit-side connection terminals 22 in the circuit-side connection unit 12 is 180 for two integrated circuits
- the number of circuit-side connection terminals 23 in the circuit-side connection unit 13 is one for an integrated circuit. You may set 90 each. In this way, the number of circuit side connection terminals 22 and circuit side connection terminals 23 may be different.
- the number of connection terminals provided is an integral multiple of the number of outputs of the integrated circuit, but may be set regardless of the number of outputs of the integrated circuit.
- FIG. 3 is a plan view showing a flexible substrate 10A according to Embodiment 2 of the present invention.
- the flexible substrate 10A has the same overall shape as the flexible substrate 10, but in the substrate portion 15A, the first substrate portion 16A extending from the common substrate portion 19 and the longitudinal length of the first substrate portion 16A via the branch portion 17X.
- stretched along the direction is provided.
- it differs from the flexible substrate 10 in that the lengths of all the wirings 25a, 25b are equal.
- the current path length from the panel side connection terminal 21a to the circuit side connection terminal 22 and the current path length from the panel side connection terminal 21b to the circuit side connection terminal 23 are the same.
- a large peak current needs to flow through the scan electrode of the PDP during the sustain period.
- the ringing superimposed on the drive voltage waveform also varies, which may cause a reduction in image display quality.
- the impedances of the current paths of the respective wirings leading to the respective scan electrodes can be made substantially equal. Therefore, it is possible to realize an image display device capable of suppressing ringing variation and exhibiting excellent image display performance.
- FIG. 4 shows a flexible substrate 10B according to Embodiment 3 of the present invention.
- the flexible substrate 10B is formed by forming branch portions 17A, 17B, a first substrate portion 18A, and a second substrate portion 18B having shapes symmetrical to each other with respect to the common substrate portion 19 in the substrate portion 15B.
- the bent portion 29 is provided on one of the branch portions 17A and 17B.
- FIG. 4 the structure which provided the bending part 29A on the branch part 17B is shown.
- the first substrate portion 18A extends from the branch portion 17A.
- the same effect as that of the flexible substrate 10 of the first embodiment can be expected.
- the lengths of the wirings 25a and 25b are the same as in the second embodiment, the current paths are the same in the flexible substrate 10B, and the impedance characteristic can be made uniform.
- FIG. 5 shows a configuration of a flexible substrate 10C according to the fourth embodiment.
- the flexible substrate 10C has a substrate portion 15C having the basic structure of the flexible substrate 10B of the third embodiment, and further has a configuration in which a third substrate portion 18C is provided from the common substrate portion 19.
- the first substrate portion 18A, the second substrate portion 18B, and the third substrate portion 18C are all elongated bodies extending in parallel with each other at a predetermined distance, and have different lengths in the longitudinal direction. In the configuration example of FIG. 5, the length is adjusted to be longer in the order of the third substrate portion 18C, the second substrate portion 18B, and the first substrate portion 18A. However, it is not limited to the difference in the length of this order.
- Circuit connection portions 12, 13, and 14 are provided at the longitudinal ends of the first substrate portion 18A, the second substrate portion 18B, and the third substrate portion 18C, respectively, and the connection terminals 22, 23, and 24 are respectively predetermined in the same order. They are arranged at a pitch. Wirings 25a, 25b, and 25c are arranged on the three substrate portions 18A to 18C, respectively. In addition, panel-side connection terminals 21a, 21b, and 21c connected to the wirings 25a, 25b, and 25c are arranged at a predetermined pitch on the panel-side connection portion 11 of the common substrate portion 19.
- bent portions 29A and 29B are provided on the branch portions 17A and 17B, respectively.
- the flexible board 10C having such a configuration can be easily connected to, for example, a drive circuit board in which the first connector is provided on one surface and the second and third connectors are provided in series on the other surface. it can.
- the connecting portion 14 is first connected to the first connector provided on one surface of the drive circuit board.
- the branch portions 17A and 17B and the substrate portions 18A and 18B are folded back to the back side of the paper at the bent portions 29A and 29B, and the connection portion 12 is connected to the second connector and the third connector arranged on the other surface of the drive circuit board. 13 is inserted.
- the connection portions 12 to 14 are particularly efficiently connected when three connectors are arranged in series when the drive circuit board is viewed in plan view. Is possible.
- FIG. 6 is an exploded perspective view of a panel (PDP) used in the plasma display device in accordance with the fifth exemplary embodiment of the present invention.
- the PDP 30 has a rectangular display surface, and a front substrate (front panel) 37 and a rear substrate (back panel) 47 are arranged to face each other with a discharge space, and both the substrates 37 and 47 are sealed around each other. A discharge gas is sealed in the discharge space.
- a plurality of pairs of display electrode pairs 34 each composed of a strip-shaped scan electrode 32 and a sustain electrode 33 are arranged in parallel on one surface of the front panel glass 31.
- a dielectric layer 35 having a predetermined relative dielectric constant is formed so as to cover the display electrode pair 34, and the dielectric layer 35 is protected from the impact of discharge on the dielectric layer 35, and the secondary electrons.
- a protective layer 36 for exhibiting the emission characteristics is formed.
- strip-shaped data (address) electrodes 42 are arranged in parallel on the surface of the back panel glass 41, and a dielectric layer 43 is formed so as to cover each data electrode 42.
- a grid-like partition wall 44 is formed on the surface of the dielectric layer 43.
- a phosphor layer 45 of one of RGB colors is formed on the side surface of the partition wall 44 and the surface of the dielectric layer 43 surrounded by the partition wall 44.
- each of the scan electrode 32, the sustain electrode 33, and the data electrode 42 constituting the display electrode pair 34 is connected to each of electrode terminals provided at a predetermined pitch in the peripheral portion located outside the image display area of the front plate 37. On the other hand, they are connected one to one.
- the front substrate 37 and the rear substrate 47 are arranged to face each other so that the display electrode pair 34 and the data electrode 42 cross each other with a minute discharge space 46 interposed therebetween, and are sealed with a sealing material including glass frit and the like around the display electrode pair 34 and the data electrode 42. Worn.
- a discharge gas made of a mixed gas of neon and xenon is sealed at a predetermined pressure.
- the discharge space 46 is partitioned into a plurality of sections by partition walls 44, and discharge cells are formed corresponding to individual portions where the display electrode pairs 34 and the data electrodes 42 intersect. Accordingly, for example, n scanning electrodes 32 and n sustain electrodes 33 that are long in the row direction are arranged on the front panel glass 31, and m data electrodes 42 that are long in the column direction are arranged on the back panel glass 41. In the PDP 30, a total of m ⁇ n discharge cells are formed.
- an address discharge is performed between the scan electrode 32 and the data electrode 42 in any one of the discharge cells at the time of driving, and a discharge cell that should emit light is specified and then positioned in the discharge cell. Sustain discharge occurs between the pair of display electrodes 34.
- the ultraviolet rays generated at this time are converted into visible light by the phosphor layer 45, and the visible light is extracted to the outside, thereby realizing a predetermined image display. For example, when m ⁇ n discharge cells are formed, the area where the discharge cells are formed becomes the image display area of the front substrate 37.
- FIG. 7 is a schematic diagram showing the arrangement relationship between the display electrode pair 34 (scanning electrode 32 and sustaining electrode 33) and the electrode terminals 52 and 56 on the front panel glass 31 on the front substrate 37 of the PDP 30.
- FIG. 7 is a schematic diagram showing the arrangement relationship between the display electrode pair 34 (scanning electrode 32 and sustaining electrode 33) and the electrode terminals 52 and 56 on the front panel glass 31 on the front substrate 37 of the PDP 30.
- each scanning electrode 32 is connected to each scanning electrode electrode terminal 52 provided in the right peripheral portion (and hence the left peripheral portion in FIG. 7) outside the image display region when viewed from the display surface side by the lead line 51. Connected independently.
- a plurality of scanning electrode electrode terminals 52 are grouped and arranged as an electrode terminal group 53 in order to connect to the panel-side connecting portion 11 of the flexible substrate 10 according to the first embodiment.
- FIG. 7 shows 48 scan electrodes 32 and 48 scan electrode electrode terminals 52 grouped into 6 electrode terminal groups 53 of 8 each.
- the number of scanning electrodes 32 is 2,160, and the number of scanning electrode electrode terminals 52 can be grouped into eight electrode terminal groups 53 by 270. In this case, a total of eight flexible substrates 10 are connected to each electrode terminal group 53, one for each.
- each of the sustain electrodes 33 is connected to a short-circuit line 55 for applying a voltage of the same potential all together.
- the sustain electrode electrodes 56 are grouped into a plurality of electrode terminal groups 57, and are arranged on the left peripheral portion outside the image display region (therefore, the right peripheral portion in FIG. 7). Is provided.
- each sustain electrode 33 is divided into a plurality of sustain electrode groups, and the sustain electrodes to which the same drive voltage waveform is applied are short-circuited with a short-circuit line so that different sustain voltage waveforms can be applied to each sustain electrode group. And you may connect the flexible substrate 58 with respect to each short circuit wire.
- the PDP 30 is driven by dividing a period of one field into a plurality of subfields and displaying an image by controlling light emission / non-light emission of each discharge cell in each subfield.
- a so-called time division display method can be adopted.
- Each subfield has an initialization period, an address period, and a sustain period.
- FIG. 8 shows drive voltage waveforms for three subfields, drive voltage waveforms in other subfields existing in each field are substantially the same.
- the voltage 0 (V) is applied to the data electrode 42 and the sustain electrode 33, and the scan electrode 32 gradually increases from the voltage Vi1 to the voltage Vi2. Apply the ramp voltage. Thereafter, the voltage Ve1 is applied to the sustain electrode 33, and the ramp voltage that gradually decreases from the voltage Vi3 toward the voltage Vi4 is applied to the scan electrode 32. Then, a weak initializing discharge is generated in each discharge cell, and wall charges necessary for the subsequent address operation are formed in the discharge cell inner region corresponding to the vicinity of each electrode 32, 33, 42.
- the scan electrode 32 is gradually adjusted. It is only necessary to apply a ramp voltage that falls.
- voltage Ve ⁇ b> 2 is applied to sustain electrode 33 and voltage Vc is applied to scan electrode 32.
- a scan pulse of voltage Va is first applied to the scan electrode 32 that performs the address operation, and an address pulse of voltage Vd is applied to the data electrode 42 corresponding to the discharge cell to emit light.
- an address discharge is generated in the discharge cell to which the scan pulse and the address pulse are simultaneously applied, and an address operation for accumulating wall charges on the scan electrode 32 and the sustain electrode 33 of the discharge cell is performed.
- a scan pulse is applied to the scan electrode 32 that performs the second address operation, and an address pulse is applied to the data electrode 42 corresponding to the discharge cell to emit light.
- an address discharge occurs in the discharge cell to which the scan pulse and the address pulse are simultaneously applied, and an address operation is performed.
- Such an address operation is performed in all the discharge cells that should emit light, and an address discharge is selectively generated in the discharge cells that should emit light, thereby forming wall charges.
- the difference voltage between the voltage Vc and the voltage Va is usually about 50 (V) to 150 (V). Therefore, depending on this differential voltage, the distance between the connection terminals 22 and 23 of the circuit side connection portions 12 and 13 of the flexible substrate 10 and the minimum value of the distance between the terminals of the drive circuit board side connector that connects them are limited.
- the Rukoto is the same voltage between the connection terminals 22 and 23 of the circuit side connection portions 12 and 13 of the flexible substrate 10 and the minimum value of the distance between the terminals of the drive circuit board side connector that connects them are limited.
- a voltage 0 (V) is applied to the scan electrode 32 and a sustain pulse of the voltage Vs is applied to the sustain electrode 33. Then, in the discharge cell in which the sustain discharge has occurred, the sustain discharge occurs again to emit light. Thereafter, a sustain pulse corresponding to the luminance weight is alternately applied to the scan electrode 32 and the sustain electrode 33 to cause the discharge cell to emit light.
- a period of one field is constituted by a plurality of subfields, and gradation display can be performed by controlling the subfields that cause the discharge cells to emit light.
- the display electrode pairs 34 are divided into a plurality of display electrode pair groups, and the required number of subfields can be ensured by applying the above-described driving method to each display electrode pair group. .
- FIG. 9 is a circuit block diagram of plasma display device 60 in accordance with the fifth exemplary embodiment of the present invention.
- the plasma display device 60 is necessary for the PDP 30, the image signal processing circuit 61, the data electrode drive circuit 62, the scan electrode drive circuit 63, the sustain electrode drive circuit 64, the timing generation circuit 65, and each circuit block.
- a power supply unit (not shown) for supplying power is provided.
- the image signal processing circuit 61 converts the input image signal into image data indicating light emission / non-light emission for each subfield.
- the data electrode driving circuit 62 converts the image data for each subfield into an address pulse applied to each of the data electrodes 42.
- the timing generation circuit 65 generates various timing signals for controlling the operation of each circuit block based on the horizontal synchronization signal and the vertical synchronization signal, and supplies them to the respective circuit blocks.
- Scan electrode drive circuit 63 generates a drive voltage waveform to be applied to each scan electrode 32 based on the timing signal
- sustain electrode drive circuit 64 generates a drive voltage waveform to be applied to sustain electrode 33 based on the timing signal.
- FIG. 10 is a diagram showing a drive circuit mounted on the circuit board of the plasma display device 60 in accordance with the fifth exemplary embodiment of the present invention, and shows an example of the scan electrode drive circuit 63.
- the sustain pulse generation unit that generates the sustain pulse of the scan electrode driving circuit 63 and the initialization waveform generation unit that generates the initialization waveform are mounted on the circuit board 71. Further, the scan pulse generator 69 for generating the scan pulse is divided and mounted on the circuit board 72 and the circuit board 73.
- FIG. 11 is an exploded perspective view showing the structure of a plasma display device 60, which is an image display device according to Embodiment 5 of the present invention.
- the PDP 30 is attached to the chassis 81 via a plurality of heat conductive sheets 82 on the back surface thereof. Further, on the rear surface of the chassis 81, a circuit board on which a circuit for driving the PDP 30 is mounted, such as a power supply circuit board for driving the PDP 30 and each drive circuit board (scanning electrode drive circuit, sustain electrode drive circuit, timing generation circuit, etc. A group 83) is arranged. The PDP 30 and the circuit board group 83 are electrically connected via the flexible boards 10, 58, and 59. All of these components are housed between the front frame 84 and the back cover 85.
- the scan electrode electrode terminal 52 is on one short side (the front side in FIG. 11), the sustain electrode electrode terminal 56 is on the other short side, and the data electrode electrode is on the long side. Terminals) are provided (both not shown).
- the flexible electrode 10 is electrically connected to the scan electrode electrode terminal, the flexible substrate 58 is electrically connected to the sustain electrode electrode terminal, and the flexible substrate 59 is electrically connected to the data electrode electrode terminal.
- the heat conductive sheet 82 is an adhesive means for adhering the PDP 30 to the chassis 81 and is provided for dissipating the heat generated in the PDP 30 to the chassis 81 and releasing it.
- the chassis 81 holds the PDP 30 via the heat conductive sheet 82 on one side, and also holds each circuit board of the circuit board group 83 on the other side.
- the circuit board 72 and the circuit board 73 are clearly shown.
- the circuit board 72 and the circuit board 73 are provided with a plurality of connectors 76 and connectors 77 for outputting drive voltage waveforms to the scanning electrodes 32, respectively.
- a plurality of connectors 76 that connect the circuit-side connection portion 12 of the flexible substrate 10 are provided on one surface (back surface) of the circuit board 72 and the circuit board 73.
- a plurality of connectors 77 for connecting the circuit side connection portion 13 of the flexible substrate 10 are provided on the other surface (front surface).
- the flexible substrate 10 connected to the scan electrode electrode terminal 52 of the PDP 30 is connected to the connector 76 and the connector 77 over the chassis 81 in the circuit side connection portions 12 and 13 (not shown) (in the drawing). Of the two-dot chain line).
- FIG. 12 is an enlarged view showing a connection state of the flexible substrate 10 of the plasma display device 60 in accordance with the fifth exemplary embodiment of the present invention.
- a connector 76 is provided on one main surface of the circuit board 72, and a connector 77 is provided on the other main surface.
- the panel side connection part 11 in the flexible substrate 10 is connected to a scanning electrode electrode terminal 52 (not shown) provided on one of the short sides of the front substrate 31 of the PDP 30.
- a scanning electrode electrode terminal 52 (not shown) provided on one of the short sides of the front substrate 31 of the PDP 30.
- the flexible substrate 10 and the scan electrode electrode terminal 52 may be overlapped and thermocompression bonded with an anisotropic conductive film interposed therebetween.
- the flexible substrate 10 is bent by a bending portion 29 so that the second substrate portion 18 overlaps the first substrate portion 16, and in this state, the flexible substrate 10 gets over the chassis 81 (not shown) and is bent toward the circuit substrate 72 side.
- the circuit side connection portion 12 of the flexible substrate 10 is connected to a connector 76 provided on the back surface side of the circuit board 72, and the circuit side connection portion 13 is connected to a connector 77 provided on the front surface side of the circuit board 72. .
- chassis 81 is omitted in FIG. 12 for understanding the configuration, the chassis 81 exists between the PDP 30 and the circuit board 72 as shown in FIG.
- the flexible substrate 10 is mounted by gently bending the flexible substrate 10 along the bent portion 29 and connecting to the connector 76 provided on the back surface side of the circuit board 72 and the connector 77 provided on the front surface side.
- the width occupied by the flexible substrate 10 can be accommodated to the same extent as the width of the panel-side connecting portion 11. Therefore, even in an image display apparatus in which a plurality of flexible boards 10 are connected to a high-definition panel PDP 30, connectors 76 and connectors 77 are arranged in a row on the front and back surfaces of the circuit board 72, for example.
- the flexible substrates 10 can be connected to each other, and a compact image display device can be realized.
- the distance between the panel side connecting portion 11 and the circuit side connecting portion 13 is longer than the distance between the panel side connecting portion 11 and the circuit side connecting portion 12.
- the connector 76 is arranged on the back side near the end of the circuit board 72, and the connector 77 is arranged on the surface side far from the end of the circuit board 72, so that the circuit side connecting part 12 and the connector 76 are workable.
- the connection is made well and the circuit side connection portion 13 and the connector 77 are connected with good workability.
- the connector 76 may be disposed on the back side far from the end of the circuit board 72, and the connector 77 may be disposed on the front side near the end of the circuit board 72, and the distance from the end where the connector 76 is disposed. May be approximately equal to the distance from the end where the connector 77 is disposed.
- a plurality of connectors 76 for connecting the circuit side connection portions 12 of the flexible board 10 are provided on the front side of the circuit board 72 and the circuit board 73, and the circuit side connection of the flexible board 10 is provided on the back side of the circuit board 72 and the circuit board 73.
- a plurality of connectors 77 for connecting the portion 13 may be provided.
- the position where the connector 76 and the connector 77 are arranged depends on the position of the panel side connecting portion 11, the circuit side connecting portion 12 and the circuit side connecting portion 13, the surface of the base material on which the wiring 25 is formed, and the like. Is set.
- the image display device in which the flexible substrate 10 of the first embodiment is connected to the PDP 30 and the drive circuit boards 71 to 73 is illustrated, but the present invention is naturally not limited to this configuration.
- An image display device in which the flexible substrate in any one of the forms 2 to 4 is connected to the PDP 30 and the drive circuit substrates 71 to 73 can also be provided.
- Embodiments 1 to 5 are merely examples, and the present invention is not limited to these numerical values. These numerical values and the like are desirably set optimally in accordance with the characteristics of the image display device to be used and the specifications of the image display apparatus.
- the circuit side connection parts 12 and 13 of the flexible substrate 10 are mainly connected to the circuit boards 72 and 73.
- the present invention is not limited to this, It is also possible to connect the circuit side connection portion of the flexible substrate to another circuit substrate disposed inside the image display device.
- the PDP is exemplified as the image display device, but other image display devices such as an LCD and an organic EL display panel (OELD) can be replaced.
- image display devices such as an LCD and an organic EL display panel (OELD) can be replaced.
- OELD organic EL display panel
- the present invention for example, in addition to high-definition panel PDPs, various types of image display devices such as PDPs of general specifications, FPDs such as LCDs and OELDs and CRTs, and the like are electrically connected to circuit boards such as drive circuit boards.
- PDPs of general specifications FPDs such as LCDs and OELDs and CRTs, and the like are electrically connected to circuit boards such as drive circuit boards.
Abstract
Description
図1は、本発明の実施の形態1におけるフレキシブル基板10の構成を示す、平面図である。
図3は、本発明の実施の形態2に係るフレキシブル基板10Aを示す平面図である。
図4に、本発明の実施の形態3に係るフレキシブル基板10Bを示す。
次に図5に実施の形態4に係るフレキシブル基板10Cの構成を示す。
図6は、本発明の実施の形態5におけるプラズマディスプレイ装置に用いるパネル(PDP)の分解斜視図である。
実施の形態5では、実施の形態1のフレキシブル基板10をPDP30と駆動回路基板71~73に接続した画像表示装置について例示したが、当然ながら本発明はこの構成に限定されず、その他の実施の形態2~4のいずれかのフレキシブル基板をPDP30と駆動回路基板71~73に接続した画像表示装置とすることもできる。
11 パネル(デバイス)側接続部
12、13 回路側接続部
15、15A、15B、15C 基板部
16、16A、18A 第1基板部
17、17X、17A、17B 分岐部
18、18X、18B、 第2基板部
18C 第3基板部
19 共通基板部
21a、21b パネル(デバイス)側接続端子
22、23、24 回路側接続端子
25a、25b、25c 配線
29、29A、29B 折り曲げ部
30 PDP(画像表示デバイス)
31 フロントパネルガラス
32 走査電極
33 維持電極
34 表示電極対
35、43 誘電体層
36 保護層
37 前面基板(フロントパネル)
41 バックパネルガラス
42 データ(アドレス)電極
44 隔壁
45 蛍光体層
46 放電空間
47 背面基板(バックパネル)
51 引出し線
52 走査電極用電極端子
53、57 電極端子群
55 短絡線
56 維持電極用電極端子
58、59 フレキシブル基板
60 プラズマディスプレイ装置
61 画像信号処理回路
62 データ電極駆動回路
63 走査電極駆動回路
64 維持電極駆動回路
65 タイミング発生回路
69 走査パルス発生部
71、72、73、90 回路基板
76、77、92、93 コネクター
81 シャーシ
82 熱伝導シート
83 回路基板群
84 前面枠
85 バックカバー
Claims (9)
- 画像表示デバイスと回路基板とが、フレキシブル基板により電気接続された画像表示装置であって、
前記フレキシブル基板は、共通基板部と、当該共通基板部より互いに分岐する第1基板部及び第2基板部とを有し、
当該フレキシブル基板表面を平面視したとき、前記第1基板部及び前記第2基板部の各々から前記共通基板部に向かって合流するように、複数の配線が並設され、
前記共通基板部には、前記画像表示デバイスと接続するためのデバイス側接続端子、前記第1基板部及び前記第2基板部の各々には、前記回路基板と接続するための回路側接続端子がそれぞれ形成され、前記各デバイス側接続端子は前記配線を介して前記各回路側接続端子と一対一で電気接続されており、
前記回路基板には、一方の面に第1コネクター、他方の面に第2コネクターが配設され、
前記フレキシブル基板は、前記第1基板部または前記第2基板部の少なくともいずれかにおいて折り曲げられた状態で、前記第1コネクターに前記第1基板部の回路側接続端子が接続され、前記第2コネクターに前記第2基板部の回路側接続端子が接続される
画像表示装置。 - 前記各回路側接続端子のピッチが、前記各デバイス側接続端子間のピッチよりも大きく調整されている
請求項1に記載の画像表示装置。 - 前記回路基板には、前記第1コネクター及び前記第2コネクターの少なくともいずれかが、複数個にわたり列状に配設されている
請求項2に記載の画像表示装置。 - 前記第1基板部は長尺状であり、
前記第2基板部は、前記共通基板部から突設された分岐部と、当該分岐部から前記第1基板部の長手方向に平行に延伸された延伸部で構成され、前記第1基板部の長手方向末端及び前記第2基板部の延伸部の延伸方向末端の各々に、前記回路側接続端子が設けられている
請求項1に記載の画像表示装置。 - 前記第1及び第2基板部はともに長尺状であり、
各々の長手方向に沿って、前記第2基板部の長さが前記第1基板部の長さよりも短く、且つ、前記第1基板部及び前記第2基板部にそれぞれ対応して配設される各配線の長さが同じである
請求項1に記載の画像表示装置。 - 前記第1及び第2基板部はともに長尺状であり、
各々の長手方向に沿って、前記第2基板部の長さが前記第1基板部の長さよりも長く、且つ、前記第2基板部に対応して配設された各配線の長さが、前記第1基板部に対応して配設された各配線の長さよりも長い
請求項1に記載の画像表示装置。 - 前記共通基板部より、前記第1基板部及び前記第2基板部と分岐する第3基板部が形成され、
前記第1基板部、前記第2基板部、前記第3基板部はともに長尺状であり、且つ、各長手方向に沿った長さが、互いに異なる
請求項1に記載の画像表示装置。 - 前記フレキシブル基板において、前記各配線は、2層の樹脂フィルム層に被覆されている
請求項1に記載の画像表示装置。 - 前記画像表示デバイスは、フロントパネル及びバックパネルが放電空間を挟んで対向配置され、両パネル間に放電ガスが封止されたプラズマディスプレイパネルであって、
前記フロントパネルは、フロントパネルガラス表面に、走査電極及び維持電極からなる一対の表示電極が複数対にわたり並設され、前記各複数対の表示電極が誘電体層で被覆されて構成され、
前記バックパネルは、バックパネルガラス表面にデータ電極が、前記表示電極と直交する方向に沿って並設され、前記各データ電極が誘電体層で被覆されて構成され、
前記フレキシブル基板の各デバイス側接続端子は、前記各走査電極と電気接続されている
請求項1に記載の画像表示装置。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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JP2012501674A JPWO2011105062A1 (ja) | 2010-02-23 | 2011-02-23 | 画像表示装置 |
US13/576,138 US20120293470A1 (en) | 2010-02-23 | 2011-02-23 | Image display device |
KR1020127021832A KR20120137474A (ko) | 2010-02-23 | 2011-02-23 | 화상표시장치 |
CN2011800107130A CN102763149A (zh) | 2010-02-23 | 2011-02-23 | 图像显示装置 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2010-036791 | 2010-02-23 | ||
JP2010036791 | 2010-02-23 |
Publications (1)
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WO2011105062A1 true WO2011105062A1 (ja) | 2011-09-01 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2011/001004 WO2011105062A1 (ja) | 2010-02-23 | 2011-02-23 | 画像表示装置 |
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US (1) | US20120293470A1 (ja) |
JP (1) | JPWO2011105062A1 (ja) |
KR (1) | KR20120137474A (ja) |
CN (1) | CN102763149A (ja) |
WO (1) | WO2011105062A1 (ja) |
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US9750132B2 (en) | 2012-12-25 | 2017-08-29 | Murata Manufacturing Co., Ltd. | Circuit board and electronic device |
JP2017028034A (ja) * | 2015-07-17 | 2017-02-02 | 大日本印刷株式会社 | Led素子用のフレキシブル基板間の接続構造 |
JPWO2019103132A1 (ja) * | 2017-11-27 | 2020-12-17 | 住友電工プリントサーキット株式会社 | フレキシブルプリント配線板及びフレキシブルプリント配線板の製造方法 |
WO2021230299A1 (ja) * | 2020-05-12 | 2021-11-18 | 凸版印刷株式会社 | 調光ユニット |
US11966126B2 (en) | 2020-05-12 | 2024-04-23 | Toppan Inc. | Light control unit |
Also Published As
Publication number | Publication date |
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JPWO2011105062A1 (ja) | 2013-06-20 |
KR20120137474A (ko) | 2012-12-21 |
US20120293470A1 (en) | 2012-11-22 |
CN102763149A (zh) | 2012-10-31 |
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