WO2007020697A1 - フラットディスプレイ装置 - Google Patents
フラットディスプレイ装置 Download PDFInfo
- Publication number
- WO2007020697A1 WO2007020697A1 PCT/JP2005/015092 JP2005015092W WO2007020697A1 WO 2007020697 A1 WO2007020697 A1 WO 2007020697A1 JP 2005015092 W JP2005015092 W JP 2005015092W WO 2007020697 A1 WO2007020697 A1 WO 2007020697A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- driver
- flat display
- display device
- chip
- panel
- Prior art date
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Classifications
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- H—ELECTRICITY
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- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/34—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
- H01L23/36—Selection of materials, or shaping, to facilitate cooling or heating, e.g. heatsinks
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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
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20954—Modifications to facilitate cooling, ventilating, or heating for display panels
- H05K7/20963—Heat transfer by conduction from internal heat source to heat radiating structure
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- H01L21/50—Assembly of semiconductor devices using processes or apparatus not provided for in a single one of the groups H01L21/18 - H01L21/326 or H10D48/04 - H10D48/07 e.g. sealing of a cap to a base of a container
- H01L21/56—Encapsulations, e.g. encapsulation layers, coatings
- H01L21/563—Encapsulation of active face of flip-chip device, e.g. underfilling or underencapsulation of flip-chip, encapsulation preform on chip or mounting substrate
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Definitions
- the present invention relates to a technology of a flat display device using a flat display panel such as a plasma display panel (PDP), and in particular, a driver IC chip for driving an electrode of the panel and a driver thereof.
- PDP plasma display panel
- the present invention relates to a mounting structure of an IC chip mounting module (referred to as a driver module).
- the present invention relates to a structure for heat dissipation in the apparatus.
- driver module for driving a PDP
- WB wire bonding
- GB gang bonding driver modules
- WB ADM address driver module
- WB-ADM WB-ADM
- GB ADM GB-ADM
- the GB-type driver module is basically a structure in which the driver IC chip is mounted directly on the flexible substrate side and there is no heat dissipation structure for the driver IC chip. Therefore, a device has been proposed in which a heat dissipation structure is provided in a part of the structure of the flat display device so that the entire device can dissipate heat.
- Patent Document 1 JP 2000-172191 A
- Patent Document 2 JP 2001-352022 A
- Patent Document 1 discloses a structure in which a driver IC chip is brought into contact with a heat sink block arranged so as to be in contact with the panel to dissipate heat. Yes. However, it is unclear because there is no structure that allows the driver IC chip to contact the heat sink block reliably and stably.
- Patent Document 2 has a structure in which the driver IC chip is held by being pressed against a part of the chassis structure, and the surface side force facing the chassis of the driver IC chip also dissipates heat to the chassis side. It is shown. However, there is a problem that the heat radiation path in the entire apparatus is limited and the heat radiation efficiency is insufficient.
- the present invention has been made in view of the above problems, and the object thereof is related to a mounting structure of a driver IC chip and a driver module on a panel such as a PDP in the flat display device as described above.
- it is related to GB-type driver modules, and it is intended to provide technology that improves heat dissipation performance compared to the past and provides good thermal and electrical performance and stable quality in terms of long-term reliability.
- the flat display device of the present invention includes a mounting structure of a driver IC chip and a driver module for a panel such as a PDP, and has the following technical means and mounting structure.
- the chassis portion is used as a means having both the function of releasing heat and holding and fixing the driver module in the mounting structure of the GB type driver module to the module including the panel and the chassis portion.
- the first and second elastic heat conducting members (hereinafter simply abbreviated as members) having different characteristics before and after the driver IC chip part (including the flexible board surface) are attached to the structure for mounting the driver module to the structure. Place). This provides good thermal 'electrical performance.
- the first And the second member is arranged to be in direct contact with the driver IC chip portion. Details are as follows.
- the apparatus of the present invention includes a flat display panel (referred to as FDP) having electrodes, for example, display electrodes (X, Y) and address electrodes (A), and a drain that is connected to the electrodes of the FDP and drives the electrodes.
- FDP flat display panel
- Driver module equipped with a flexible board with a driver IC chip (semiconductor integrated circuit component) mounted in GB format, a chassis structure provided close to the rear side of the FDP, and a driver IC chip of the chassis structure
- the structure includes a member (holding plate) that is held and fixed by being sandwiched and pressed between a part of the regions.
- the presser plate also has a function of radiating heat to the outside.
- the driver IC chip has a circuit forming surface connected to the wiring on the flexible substrate side and a non-circuit forming surface on the opposite side. The driver IC chip is mounted on one side of the flexible board using the GB method.
- the first and second members are included.
- the first member that is in direct contact with the non-circuit formation surface side of the driver IC chip and the circuit formation surface side of the driver IC chip are used for holding and fixing the driver module between the chassis portion and the holding plate.
- the mechanism structure balances the characteristics of elasticity and thermal conductivity according to the specifications of the material and thickness of the two members, and holds and fixes the driver module, especially the driver IC chip part.
- the structure satisfies both the performance of heat dissipation from the part.
- the first member has a relatively high thermal conductivity (ie thin, shape, etc.), and the second member has a high elasticity (ie, thickness, shape, etc.).
- Each member is, for example, a resin material body.
- the driver IC chip mounting surface of the driver module is disposed to face the chassis portion side between the chassis portion structure and the pressing plate. Between chassis surface and driver IC chip surface The first member having a flat plate shape and high thermal conductivity is sandwiched between the driver IC chip non-mounting surface of the flexible substrate and the holding plate surface, and the flat plate shape has a low thermal conductivity. The two members are sandwiched, and the presser plate is connected and fixed to the chassis part by screws.
- the driver IC chip mounting surface of the driver module is disposed to face the presser plate between the chassis portion structure and the presser plate.
- the second member which is flat and has low thermal conductivity, is sandwiched between the chassis part surface and the driver IC chip non-mounting surface of the flexible board.
- the flat plate shape is formed between the driver IC chip surface and the holding plate surface.
- the first member having high thermal conductivity is sandwiched between the press plate and the presser plate is connected and fixed to the chassis portion.
- the second member is composed of a panel member having mechanical elasticity.
- panel members are arranged corresponding to each of a plurality of driver modules or driver IC chips.
- the second member includes a panel member having mechanical elasticity and an elastic heat conducting member.
- a plurality of elastic heat conducting members corresponding to each of them and a common panel member are arranged.
- the FDP is a plasma display panel
- the driver module is an address driver module for driving an address electrode among electrodes of the plasma display panel.
- the driver IC chip portion is arranged in the area near the lower side of the panel and the back of the chassis as the mounting position and method of the driver module with respect to the chassis structure.
- the driver IC chip portion is arranged in the area of the lower surface of the lower end portion of the chassis.
- the driver IC chip part is placed in the area on the chassis extension surface at the bottom of the panel.
- FIG. 1 is a schematic cross-sectional configuration diagram of a flat display device according to an embodiment of the present invention and a prerequisite technology.
- FIG. 2 is a perspective view showing a partial configuration of a three-electrode surface discharge AC type PDP in the flat display device according to an embodiment of the present invention and the base technology.
- FIG. 3 is a block diagram showing a configuration of a panel electrode and a driving circuit in a flat display device according to an embodiment of the present invention and a base technology.
- FIG. 4 is an explanatory view showing an appearance of the back side of the PDP module in the flat display device according to the embodiment of the present invention and the base technology.
- FIG. 5 is an explanatory diagram showing a configuration example of a COF type GB-ADM in the first to third embodiments of the present invention and the flat display device of the base technology.
- FIG. 6 is an explanatory diagram showing a configuration and principle of main parts related to a solution to a problem in the base technology in the mounting structure of the flat display device according to the first embodiment of the present invention.
- FIG. 7 is a longitudinal sectional view of the panel showing a specific mounting structure of the flat display device according to the first embodiment of the present invention.
- FIG. 8 is a panel longitudinal sectional view showing a specific mounting structure of the flat display device according to the second embodiment of the present invention.
- FIG. 9 is a longitudinal sectional view of a panel showing a specific mounting structure of the flat display device according to the third embodiment of the present invention.
- FIG. 10 is an explanatory diagram showing a configuration example of a TCP type GB-ADM in the fourth to sixth embodiments of the present invention and the flat display device of the base technology.
- FIG. 11 is a longitudinal sectional view of a panel showing a specific mounting structure of the flat display device according to the fourth embodiment of the present invention.
- FIG. 12 is a longitudinal sectional view of a panel showing a specific mounting structure of the flat display device according to the fifth embodiment of the present invention.
- FIG. 13 shows a specific mounting structure of the flat display device according to the sixth embodiment of the present invention. It is a panel longitudinal direction sectional view.
- FIG. 14 are diagrams showing a specific mounting structure of the flat display device according to the seventh embodiment of the present invention, showing a state before the device is assembled, and (a) is a panel. An external perspective view from the back side is shown, and (b) shows a longitudinal sectional view of the panel corresponding to (a).
- FIG. 15 are diagrams showing a specific mounting structure of the flat display device according to the seventh embodiment of the present invention, showing a state after the device is assembled, and (a) is a panel. An external perspective view from the back side is shown, and (b) shows a longitudinal sectional view of the panel corresponding to (a).
- FIG. 16 is a diagram showing a specific mounting structure of the flat display device according to the eighth embodiment of the present invention, showing a state before the device is assembled, and showing an external perspective view from the back side of the panel.
- FIG. 17 are diagrams showing a specific mounting structure of the flat display device according to the eighth embodiment of the present invention, showing a state after the device is assembled, and (a) is a panel. An external perspective view from the back side is shown, and (b) shows a longitudinal sectional view of the panel corresponding to (a).
- FIG. 18 (a) and (b) are diagrams showing a specific mounting structure of the flat display device according to the ninth embodiment of the present invention. (A) is before assembly of the device, and (b) is Shown after assembly.
- FIG. 19 (a) and (b) are diagrams showing a specific mounting structure of the flat display device according to the tenth embodiment of the present invention. (A) is before assembly of the device, and (b) is the device. Shown after assembly.
- FIG. 20 (a) and (b) are diagrams showing a specific mounting structure of the flat display device according to the eleventh embodiment of the present invention. (A) is before assembly of the device, and (b) is the device. Shown after assembly. BEST MODE FOR CARRYING OUT THE INVENTION
- the flat display device of each embodiment of the present invention is a plasma display device provided with a PDP as a flat display panel.
- the driver IC chip between the chassis part and the holding plate is used as a means to ensure both the heat dissipation and the holding and fixing performance of the GB type driver module. It is the structure which provided the elastic heat conductive member in two places before and behind the cup.
- FIG. 1 is a vertical view of a flat display device (that is, a plasma display device) to which an AC type PDP panel having a three-electrode type surface discharge (also simply referred to as a PDP or a panel) in the embodiment is applied.
- the cross-sectional schematic diagram of a direction is shown.
- FIG. 2 shows a perspective view of a part of the configuration corresponding to the cell of the PDP 10 of the apparatus.
- FIG. 3 is a block diagram showing the configuration of the main part of the electrodes of the PDP 10 and the driving circuit for causing the PDP 10 to perform display operation.
- Fig. 4 is an external view of a PDP module with a drive circuit and other components built into the back side of the PDP 10 as seen from the back side.
- this plasma display device is also composed of PDP10, chassis 1 and other forces.
- the PDP 10 is mainly composed of two substrates, a front glass substrate 5 and a rear glass substrate 4, and the PDP 10 is connected and fixed to the chassis 1 with an adhesive 3 or the like. Chassis 1 and PDP10 are supported by stand 2 and the like.
- the front glass substrate 5 of the PDP 10 includes an X electrode that is a first electrode and a Y electrode that is a second electrode.
- Each X, Y electrode is composed of a BUS electrode (metal electrode) 17 and a transparent electrode 16 which are sustain electrodes.
- the Y electrode functions as a scanning electrode.
- the X and Y electrodes are covered with a dielectric layer 18 and a protective layer 19.
- the back glass substrate 4 is provided with an address electrode (A) 12 as a third electrode so as to be orthogonal to the sustain electrodes (X, Y).
- the address electrode 12 is covered with a dielectric layer 13. With these electrodes (X, ⁇ , A), a display cell that generates discharge light emission is formed by a region that intersects with the address electrode 12 in the region sandwiched between the electrodes of each number of the sustain electrodes ( ⁇ , X). Has been.
- a plurality of ribs (partition walls) 14 are formed for forming regions divided in a vertical stripe shape.
- the regions 6 separated by the ribs 14 are coated with phosphors 6 (6a, 6b, 6c) of R, G, B colors. These display cells of each color form a pixel.
- a configuration in which ribs are also provided in the lateral direction is also possible.
- each drive of the control circuit 115, the X electrode driving circuit, the Y electrode driving circuit, the address electrode driving circuit, etc. with respect to the front substrate 101 and the rear substrate 102 of the PDP 10 The circuit has a circuit (driver).
- the front substrate 101 (corresponding to 5) includes a plurality of X electrodes (Xn) as first electrodes and Y electrodes (Yn) as second electrodes.
- the back substrate 102 (corresponding to 4) has a plurality of address electrodes (Am)!
- control circuit 115 includes a display data control unit 116 including a frame memory 119 and a driver control unit.
- the driver control unit includes a scanning driver control unit 117 and a common driver control unit 118.
- the driver includes an address driver circuit 111, an X common driver circuit 114, a scan driver circuit 112, and a Y common driver circuit 113.
- the control circuit 115 controls each driver of the PDP 10 by interface signals ⁇ CLK (clock), D (data), Vsync (vertical synchronization), Hsync (horizontal synchronization) ⁇ input from the outside. Control signals are generated to control each driver.
- the display data control unit 116 controls the address driver circuit 111 based on the data signal stored in the frame memory 119, and the scan driver control unit 117 controls the scan driver circuit 112. Further, the common driver control unit 118 controls the X common driver circuit and the Y common driver circuit.
- Each driver drives the electrode in accordance with a control signal from control circuit 115.
- address discharge for determining display cells is performed by driving from the address driver circuit 111 and the scan driver circuit 112, and then from the X common driver circuit 114 and the Y common driver circuit 113. By driving, a sustain discharge for light emission of the display cell is performed.
- FIG. 4 in the PDP module rear side circuit, logic circuit section 31, power supply circuit section 32, X—SUS circuit section 33, Y—SUS circuit section 34, X—BUS circuit section 35, SDM circuit section 36,
- the configuration includes a data bus substrate 37, an address driver circuit unit 38, and the like.
- the logic circuit unit 31 includes a control circuit 115 and the like.
- the power supply circuit unit 32 supplies power to each circuit unit based on input power.
- the X—SUS circuit part 33 and the Y—SUS circuit part 36 are circuits for sustain discharge driving, and the common driver circuit is implemented. It is disguised.
- the X—SUS circuit part 33 is connected to the X—BUS circuit part 35 for relay.
- the Y—SUS circuit portion 36 is connected to the SDM circuit portion 36 corresponding to the scan driver circuit 112.
- the data bus board 37 is connected to a plurality of address driver circuit units 38, and the address driver circuit unit 38 corresponds to ADM.
- This driving circuit requires a circuit for selectively applying a driving pulse corresponding to each electrode of the PDP 10 for the scanning side driver and the address side driver part.
- an element driver IC chip in which a circuit having the function is integrated into an IC (driver IC chip) is used as a main circuit component.
- an ADM in which a driver IC chip corresponding to the function of the address driver circuit 111 is mounted on a flexible substrate is used.
- driver IC chip a circuit capable of driving 64 to 192 electrodes per IC is generally integrated. Therefore, in general, 8 to 16 driver ICs are used for the scanning electrode side, and 48 to 16 driver ICs are used for the address electrode side and 3072 electrodes.
- one or more driver IC chips are integrated as a module on a single flexible substrate using a technology that directly mounts a bare chip IC on the substrate, and this module is incorporated into the display device. The method to do is taken. [0039] ⁇ GB-ADM>
- FIG. 5 shows a configuration example of a GB-type ADM (referred to as GB ADM), particularly a so-called COF (Chip On Film) type, as an example of a driver module in the base technology.
- GB ADM GB-type ADM
- COF Chip On Film
- FIG. 5 shows the COF type GB-ADM71 flexible board 51 with its surface expanded and viewed from the back side of the PDP10, and the corresponding details of the driver IC chip mounting structure on the GB-ADM71 cross section. Speak.
- a dry IC chip 56 force is mounted directly on the surface of the flexible substrate 51 of the GB-ADM71 by gang bonding.
- the flexible board 51 is provided with an output terminal 54 for connection to the PDP 10 that is bowed out on the end face side, and an input terminal 53 for connection to the data bus board 37 side.
- a driver IC chip 56 is mounted on one side of the flexible substrate 51.
- a copper foil wiring pattern 58 is formed on a base film.
- a bump 57 is formed between the terminal on the circuit forming surface (the surface facing the flexible substrate 51) and the corresponding terminal on the wiring pattern 58 on the flexible substrate 51 side. Connected by.
- an underfill 59 is provided between the connecting portion and the surface of the flexible substrate 51 and the circuit forming surface of the driver IC chip 56.
- the output wiring connected to the output terminal of the driver IC chip 56 is used by being connected to the electrode of the PDP 10 at the output terminal 54 by a method such as thermocompression bonding.
- a holding plate having functions such as connection fixing to the chassis 1 side and heat radiation to the outside is arranged.
- the driver IC chip 56 is disposed so as to face the non-circuit forming surface (B) side force PDP10 and the back side of the chassis 1.
- the flexible substrate 51 of the GB-ADM71 and the driver IC chip 56 are sandwiched and fixed to the end of the chassis 1, particularly the lower region of the panel.
- the GB-ADM71 is held and fixed so that the driver IC chip 56 and the chassis 1 face each other.
- the plasma display device is configured to include a PDP module including a so-called COF (Chip On Film) type GB-ADM71 as a driver module mounting structure.
- a PDP module including a so-called COF (Chip On Film) type GB-ADM71 as a driver module mounting structure.
- the first elastic heat conducting member 21-1 having the function of heat radiation to the chassis 73 side between the chassis 73 and the GB-ADM71 driver IC chip 56, the press plate 75 and the GB-ADM71
- the second flexible heat conductive member 2 1-2 having a heat radiation function for the holding plate 75 side is added between the surfaces of the flexible substrate 51.
- the driver module applied in the first embodiment is the same as the GB-ADM 71 shown in FIG.
- the basic configuration of each embodiment is the same as that shown in FIGS.
- FIG. 6 shows the configuration and principle of the main part relating to the solution to the problem (the heat dissipation performance is insufficient) in the above-mentioned prerequisite technology in the mounting structure of the plasma display device of the first embodiment. It is explanatory drawing shown in the panel screen cross section. The positional relationship between the components is shown for each driver IC chip, and the driver IC chip and members are enlarged to make it easier to work.
- FIG. 7 shows a more specific mounting structure in the first embodiment, and is a partial longitudinal sectional view of the panel in the GB-ADM71 mounting structure.
- a panel 74 (corresponding to the PDP 10) and a chassis 73 (corresponding to the chassis 1 and including the chassis main body 73a and the chassis accessory 73b) , A first elastic heat conducting member 21-1, GB-ADM71 (driver IC chip 56 and flexible substrate 51 surface), a second elastic heat conducting member 21-2, and a holding plate 75.
- Resilient heat conducting members (21–1, 21) with different characteristics in terms of elasticity and heat conductivity between the chassis 73 and GB—ADM71, and between the GB—ADM71 and presser plate, respectively. 21—2) is provided.
- a plurality of GB-ADM71 driver IC chips 56 are held and fixed to the chassis portion 73 by a common holding plate 75.
- FIG. 6 it is mainly used as a heat dissipation path for heat generated from the driver IC chip 56.
- the path is a path to the chassis part 73 side through the first elastic heat conductive member 21-1, which has a relatively high thermal conductivity.
- This is a path to the holding plate 75 side through the second elastic heat conductive member 21-2 having conductivity.
- the dotted line frame indicates the surface of the flexible substrate 51 connected between the panel 74 terminal and the data bus substrate 37.
- the holding plate 75 is connected and fixed to the chassis portion 73 by means such as a fixing boss and screwing with a screw, and the like.
- the GB-ADM 71 and each member (21-1, 21) are fixed.
- the part including 2) is held and fixed.
- the characteristics of the first and second elastic heat conducting members 21-1, 21-2 are balanced across the entire device including the GB-ADM71 holding and fixing portion between the chassis portion 73 and the holding plate 75. It is designed as follows.
- the elasticity of each member (21–1, 21–2) affects the performance of holding and fixing GB-ADM71, and the thermal conductivity affects the performance of heat dissipation from GB-ADM71 to the outside.
- the first elastic heat conductive member 211 is relatively higher than the second elastic heat conductive member 21-2.
- the second elastic thermal conductive member 21-2 has higher elastic and lower thermal conductivity than the first elastic thermal conductive member 21-1
- Each material and shape is designed to have
- Each member (21-1, 21, 2) is made of, for example, silicon resin having elasticity against the pressing force as a material. Use a material in which an appropriate amount of metal oxide particles such as alumina particles are mixed as a heat transfer filter.
- the first elastic heat conducting member 21-1 arranged on the IC mounting surface side of the flexible substrate 51 is replaced with the second elastic material arranged on the opposite surface side.
- the structure is set to be relatively thinner than the structural heat conductive member 21-2. That is, the first elastic heat conducting member 21-1 is balanced so that it has a higher thermal conductivity and the second elastic heat conducting member 21-2 has a higher elasticity. ing.
- the second surface (back side) of the first elastic heat conductive member 21-1 and the non-circuit forming surface (B) (front side) of the driver IC chip 56 are in contact with each other, and the flexible substrate 51 Driver IC chip 56
- the non-mounting surface (rear side) and the second elastic heat conductive member 21-2 first surface (front side) are in contact with each other, and the second elastic heat conductive member 21-2
- the second surface (back side) and the surface of the presser plate 75 (front side) come into contact with each other.
- a chassis portion 73 having an aluminum plate material strength is pasted on the entire surface of the panel 74 with the adhesive 3 over the entire surface.
- the chassis portion 73 reinforces the panel 74 and is attached with circuit components such as a drive circuit.
- a structure (chassis accessory 73b) having the same shape of the aluminum plate material is attached to the region of the lower side near the panel 74 terminal.
- a data bus board 37 is arranged corresponding to the connection of the terminals of the flexible board 51.
- the holding plate 75 has a structure in which an end portion thereof is bent into an L shape and extends long.
- the area of the contact plane of each member (21-1, 21-2) is at least larger than the area of the driver IC chip 56.
- the driver IC chip 56 part of GB-ADM71 is sandwiched between the flat part.
- the flat plate-shaped first elastic heat conducting member 21-1 is sandwiched between the planar part of the chassis accessory 73b and the non-circuit forming surface (B) of the driver IC chip 56 facing the chassis accessory part 73b.
- the flat plate-shaped second elastic heat conducting member 21 is formed between the flat surface of the holding plate 75 and the surface opposite to the surface on which the driver IC chip 56 of the flexible substrate 51 is mounted. —2 is caught.
- the holding plate 75 and the chassis accessory 73b are connected and fixed by screws or the like.
- GB-ADM71 is stably held and fixed between the chassis 73 and the presser plate 75, and has a function of radiating heat to the chassis 73 and the presser plate 75 side.
- the heat generated from the driver IC chip 56 is released from the non-circuit forming surface side of the driver IC chip 56 to the chassis portion 73 side via the thinner first elastic heat conducting member 21-1.
- the side of the flexible board 51 to the holding plate 75 side It can escape through two elastic heat conducting members 21-2. Therefore, in this plasma display device, it is possible to comprehensively improve both the heat dissipation performance and the holding and fixing performance for all of the plurality of driver IC chips 56.
- a plurality of driver IC chips of GB-ADM71 are held and fixed by being sandwiched between a common beam-like structure (chassis accessory 73b) and a presser plate 75, In that case, even if there are some unevenness such as warping or unevenness in the structures, the non-uniformity is appropriately absorbed by the elastic function of each member (21-1, 21-2). Thus, it is possible to securely fix and fix each driver IC chip 56.
- FIG. 8 shows a configuration as a second embodiment, which has the same principle as that of FIG. 6 and has a different mounting structure including the GB-ADM71b.
- a rectangular heat sink is provided so that the chassis 73 comes into contact with the outer peripheral portion of the chassis main body 73a that is not the chassis accessory 73b that is the beam-like structure, particularly the surface of the L-shaped bent portion on the lower side.
- Block 76a is provided.
- the driver IC chip 56 of GB-ADM 7 lb is held and fixed to the side surface of the heat sink block 76, particularly the downward surface side, in the same manner as in the first embodiment.
- a plurality of driver IC chips 56 are sandwiched between the common pressing plate 75 and the heat sink block 76 with the first and second elastic heat conducting members 21-1, 21-2 interposed therebetween.
- the main bodies 73a are arranged in this order.
- the arrangement of the data bus board 37b is lower than the arrangement of the first embodiment.
- the heat dissipation and holding and fixing performance similar to that in the first embodiment can be obtained, and the size of the flexible substrate 51 can be made smaller than that in the first embodiment to reduce the cost.
- FIG. 9 shows a configuration similar to that of the third embodiment, which has the same principle as in FIG. 6 and has a different mounting structure including the GB-ADM71c.
- the flexible A structure in which the flexible board 51c is connected in a form that is not bent at all, and the size of the flexible board 51 can be further reduced as compared with the first and second embodiments.
- a heat sink block 76b having a different shape similar to that of the second embodiment is provided so as to be in contact with the chassis main body 73a.
- a data bus board 37c is provided on the extension of the panel 74 surface. A part of the heat sink block 76 is shaped to protrude outward from the lower end surface of the panel 74.
- a flat contact surface between the driver IC chip 56 and the first elastic heat conducting member 21-lc is provided on the front side of the heat sink block 76 adjacent to the panel 74 terminal. is there. From the front side, presser plate 75c, second elastic heat conducting member 21-2c, driver IC chip 56 and flexible substrate 5 lc, first elastic heat conducting member 21-lc, heat sink block 76b Has been placed.
- the area of the front side of the apparatus including the panel 74 is increased, but the size of the flexible substrate 51c can be further reduced, and the cost can be further reduced.
- the plasma display device of the fourth embodiment shows a configuration including a PDP module including a so-called TCP (Tape Carrier Package) type GB-ADM72.
- the driver module applied in the fourth embodiment is shown in FIG.
- the TCP type GB—ADM72 shown in the fourth embodiment the driver IC chip 56 is mounted in the opposite direction to the mounting of the driver IC chip 56 in the COF type GB-ADM 71 as in the first embodiment. That is, when mounting on one side where the non-circuit forming surface (C) of the driver IC chip 56 is in the same direction as the back of the device, of the both sides where IC can be mounted on the flexible board 51 of the COF type GB-ADM72 It is.
- C non-circuit forming surface
- FIG. 10 shows a configuration example of the TCP type GB-ADM 72 as in the case of the COF type in FIG.
- FIG. 11 is a longitudinal sectional view of a part of the panel as a specific mounting structure of the plasma display device of the fourth embodiment, similar to FIG.
- the driver IC chip 56 is mounted in the opening area of the flexible substrate 51. Therefore, the mounting surface of the driver IC chip 56 on both the front and back surfaces of the flexible substrate 51 It is possible to set the direction of is there. In other words, the dry IC chip 56 can be mounted in the same direction as the COF type mounting structure in the first embodiment, or can be mounted in the opposite direction. In this example, the driver IC chip 56 is mounted directly on the surface of the flexible substrate 51 facing the same direction as the rear surface of the device by gang bonding. In the opening area of the flexible substrate 51, the terminal of the wiring pattern 58 for connection protrudes as an exposed finger lead. The terminal force on the circuit forming surface side of the driver IC chip 56 is gang-bonded to the finger lead on one surface of the flexible substrate 51 and connected by bumps 57.
- FIG. 11 in order from the front side of the apparatus, panel 74, chassis 73 (including chassis main body 73a and chassis accessory 73b), second elastic heat conducting member 22-2, GB-ADM72 (driver IC Chip 56 and flexible substrate 51 surface), first elastic heat conductive member 22-1, and presser plate (presser plate with heat sink function) 77.
- the first elastic heat conducting member 22-1 between the flat part of the holding plate 77 and the non-circuit forming surface (C) of the driver IC chip 56, opposite to the IC mounting surface of the chassis accessory 73b and flexible substrate 51
- the second elastic heat conductive member 22-2 is arranged between the side surfaces.
- the presser plate 77 is a member that also has a function as a heat sink in addition to the function of holding and fixing the GB-ADM 72 to the chassis unit 73, that is, a member that also has higher heat dissipation performance than the presser plate 75 of the first embodiment. To do.
- the presser plate 77 is provided with a relatively large size, a fin, or a shape corresponding to it in order to promote heat dissipation to the presser plate 77 side.
- the presser plate 77 has a planar shape particularly on the surface facing the driver IC chip 56, and a plurality of fins for increasing the surface area of the presser plate 77 are provided on the opposite side.
- the non-circuit forming surface (C) side of the driver chip 56 is on the holding plate 77 side opposite to the chassis portion 73 side (front surface) ( Arrangement facing the back side, and the heat dissipation force from the driver IC chip 56 is mainly performed from the side of the holding plate 77. Due to the balance of the characteristics of each member (22-1, 22-2), the main heat dissipation path is formed in the direction from the driver IC chip 56 to the presser plate 77, in contrast to the first embodiment. A sub route is formed on the chassis 73 side.
- the first elastic heat conducting member 22-1 is sandwiched between the driver chip 56 and the holding plate 77,
- the presser plate 77 has a large size and a shape with fins for heat dissipation in order to increase its surface area, and is configured to enhance the effect of heat dissipation into the air.
- a sealing resin 55 is applied to the part where the flexible substrate 51 is removed on the circuit forming surface side of the driver IC chip 56.
- the second elastic heat conducting member 22-2 is sandwiched between the beam-like structure (chassis accessory 73b).
- the first and second elastic heat conductive members (22-1, 22-2) are made of a material having both elasticity and heat conductivity, as in the first embodiment.
- the balance of the characteristics of each member is opposite to that of the first embodiment, and the thickness of the first elastic heat conducting member 22-1 on the presser plate 77 side is relatively reduced.
- the second elasticity on the side of the chassis part 73 that increases the thermal conductivity The thermal conductivity of the thermal conductive member 22-2 is increased.
- the size of the holding plate 77 is larger than that of the first embodiment and fins are provided. . If the driver IC chip 56 cannot be mounted in the same direction as the COF type due to reasons such as TCP type manufacturing instead of the structural limitations of the device, the configuration of the fourth embodiment is applied. It is effective to do.
- FIG. 12 shows a configuration in which the mounting structure of the part including GB-ADM72b is different as the fifth embodiment.
- the chassis 73 contacts the outer periphery of the chassis main body 73a.
- the driver IC chip 56 of the GB-ADM 72b is held and fixed to the surface of the square heat sink block 76a having the same structure as in the fourth embodiment.
- FIG. 13 shows a configuration in which the mounting structure of the part including the GB-ADM 72c is different as the sixth embodiment.
- the flexible substrate 51c is connected in a shape without being bent, and the flexible substrate 51c can be further reduced in size.
- a chassis accessory 73c extending in contact with the chassis body 73a is provided. Adjacent to the panel 74 terminal, a planar contact surface with the driver IC chip 56 and the second elastic heat conducting member 22 2c is provided on the front side of the chassis accessory 73c.
- presser plate 77c From the front side, presser plate 77c, first elastic heat conductive member 2 2—lc, driver IC chip 56 and flexible board 5 lc, second elastic heat conductive member 2 2—2c, chassis accessory 73c Is arranged. Similarly, it is possible to reduce the cost by reducing the size of the flexible substrate 51c.
- Embodiment 7 shows another embodiment based on the technical idea substantially similar to the first embodiment described above.
- a panel member is provided as a mechanical elastic member at the position of the second elastic heat conducting member 21-2 on the side that is not the main heat dissipation path in Embodiment 1. It corresponds to the form to which 23 is applied.
- the driver module applied in the seventh and eighth embodiments is the same as that of the GB-ADM71.
- FIG. 14 and FIG. 15 show a specific mounting structure of the seventh embodiment.
- Fig. 14 shows the configuration before assembling the device.
- (A) is a perspective view of the rear force
- (b) is a longitudinal sectional view of the panel corresponding to (a).
- FIG. 15 shows the configuration after assembling the device.
- (a) is a perspective view of the rear force
- (b) is a cross-sectional view corresponding to (a).
- a panel member 23 corresponding to each driver IC chip 56 is provided on the side facing the GB-ADM7 1 of the press plate 75 commonly used in the plurality of GB-ADM71. Is installed.
- the panel member 23 has a shape that covers and presses down on the surface (rear surface) of the flexible substrate 51 on which each driver IC chip 56 is mounted.
- the panel member 23 was originally a rectangular metal plate material, bent at about 1 to 2 in the longitudinal direction at about 90 degrees and then subjected to quenching or the like. It is a member that is given elasticity by heat treatment. This panel member 23 exhibits a panel-like elasticity against the force of bending deeper than 90 degrees.
- the panel member holding plate 78 has its own thermal conductivity because the panel member 23 is made of metal.
- each panel member 23 is attached to the presser plate 75 by welding or the like.
- the wider plane of each panel member 23 is made to face the flexible substrate 51 surface.
- the chassis accessory 73b is provided with a fixing boss 92, which corresponds to the screw hole on the holding plate 75 side.
- Fig. 14 (b) by connecting GB-ADM71, panel 74, chassis accessory 73b, first elastic heat conducting member 21-1, driver IC chip 56, A flexible substrate 51 and a fixing boss 92 are arranged.
- Fig. 15 (a) when attaching the presser plate 78 with the panel member, the flat surface force of each panel member 23 is applied to the surface of the flexible substrate 51 and pressed so that the angle of the panel member 23 becomes deeper.
- the presser plate 75 is pressed down and connected and fixed with screws 96.
- the panel member 23 is bent deeply between the flexible substrate 51 surface and the presser plate 75 by the attachment of the presser plate 78 with the panel member, and is arranged in a form having a panel-like elasticity. It is done. Between the non-circuit forming surface of the driver IC chip 56 and the surface of the chassis accessory member 73b, a first elastic heat conducting member 21-1 is provided so as to be in close contact with each other by eliminating even a minute gap. .
- each panel IC 23 is used for each driver IC chip 56.
- an appropriate amount of pressing force acts it can be tightly fixed to the beam-like structure side.
- the panel member 23 which is a mechanical elastic heat conductive member as described above, the relative amount that makes it easy to increase the amount of elastic displacement compared to the case of the resin material in the first embodiment or the like. It is easy to deal with unevenness such as warpage and unevenness.
- it is possible to maintain the pressing force even for long-term use without falling into plastic deformation such as resin, which is excellent in terms of long-term reliability.
- the presser plate with panel member 78 has thermal conductivity. However, if the thermal conductivity is more important than elasticity, the panel member 23 can be increased in thickness. It is. Thus, it is possible to configure by appropriately selecting the balance of the characteristics of each member in accordance with the required performance.
- the eighth embodiment will be described.
- the panel member 24 that is a mechanical elastic heat conducting member is provided on the presser plate 75 .
- the driver IC chip 56 is not provided separately, but is provided with a common and integral panel member 24, which is held and fixed.
- a plurality of panel members 23 as in the seventh embodiment are sized more than a plurality of panel members 23 manufactured individually and fixed to the holding plate 75. It may be easier to make a total by manufacturing and using all of them.
- Embodiment 8 is an advantageous form in such a case.
- the dispersion of the pressing force on the plurality of driver IC chips 56 by the common panel member 24 can cope with a certain degree of variation when the number of integrated ICs is small. However, if the number of integrated ICs is large, the variation may not be absorbed. In this case, as shown in the present example, a thick plate-like elastic heat conductive member 24 made of resin is provided between the panel member 24 and the flexible substrate 51 surface portion on which the driver IC chip 56 is mounted. -A form with 2 added is possible.
- FIG. 16 and FIG. 17 show a specific mounting structure of the eighth embodiment.
- FIG. 16 shows the configuration before assembling the device in the same manner as FIG. 14 (a)
- FIG. 17 shows the configuration after assembling the device as in FIG.
- a common panel member 24 is attached to the side of the common press plate 75 that faces the plurality of GB-ADMs 71.
- the panel member 24 corresponds to the position of the fixing boss 92. And has a hole.
- the panel member 24 has panel-like elasticity and heat conductivity as in the seventh embodiment.
- a plurality of second elastic heat conducting members 24-2 corresponding to the IC mounting positions are arranged between the pressing plate 79 with panel members and the surface of the flexible substrate 51.
- the panel cross section in this case is the same as in Fig. 14 (b).
- Fig. 17 (a) when attaching the presser plate 79 with the panel member, the flat part of the panel member 24 is applied to the surface of the flexible substrate 51, and the panel member 24 is pressed so that the angle of the panel member 24 becomes deeper.
- the presser plate 75 is pressed and fixed by screwing with the screw 96.
- FIG. 17 (b) the panel member 24 having a shape bent deeply between the surface of the flexible substrate 51 and the presser plate 75 and the second elasticity by attaching the presser plate 79 with the panel member.
- a heat conducting member 24-2 is disposed.
- FIG. 18 shows the configuration of the ninth embodiment.
- FIG. 18 (a) is a perspective view and sectional view of the structure before assembly
- FIG. 18 (b) is a perspective view and sectional view after assembly. ! /
- a recess (IC chip storage recess 181) for storing the driver IC chip 56 is provided in an area where the driver IC chip 56 is in close contact with the surface of the chassis accessory 73b. It is a thing.
- the shape of the recess (181) is slightly larger than the driver IC chip 56, and the depth of the recess is approximately the same as or slightly larger than the thickness of the driver IC chip 56.
- the total thickness of the driver IC chip 56 and the elastic heat conducting member 21-1 is equal to that of the recess (181) when the dryino IC chip 56 is pressed and fixed in the recess (181). It should be about the same as the depth. However, depending on the strength of the pressing force and the mounting density of multiple driver IC chips 56, the depth of the recess (181) smaller than the thickness of the driver IC chip 56 may be optimal. Will do.
- the ninth embodiment when the GB-ADM 71 and the driver IC chip 56 are pressed by the holding plate 75, it is possible to prevent excessive stress from being applied to the driver IC chip 56. As a result, the quality and reliability of the driver IC chip 56 itself can be secured, and the connection reliability of the driver IC chip 56 to the connection terminal portion with the flexible substrate 51 can be improved.
- FIG. 19 shows the configuration of the tenth embodiment
- FIGS. 19 (a) and 19 (b) show a perspective view and a sectional view before and after assembly in the same manner.
- An insulating plate 192 having a punching force for housing the driver IC chip 56 is inserted into the area where the driver IC chip 56 is in close contact with the surface of the chassis accessory 73b. ing.
- the shape of the insulating plate 192 is slightly the same as the range in which the surface of the flexible board 51 tries to contact the surface of the chassis accessory 73b when the GB-ADM71 is pressed against the chassis accessory 73b by the presser plate 75.
- the insulating plate 192 is made to have a large size, and the thickness of the insulating plate 192 is slightly thicker than the thickness of the driver IC chip 56.
- the total thickness of the driver IC chip 56 and the elastic heat conducting member 21-1 is increased. Should be approximately the same as the thickness of the insulating plate 192. However, in this case, depending on the strength of the pressing force and the mounting density of the plurality of driver IC chips 56, it may be optimal that the thickness of the insulating plate 192 is smaller than the thickness of the driver IC chip 56. It is necessary to select the optimum value as appropriate.
- the surface of the flexible substrate 51 forming the GB-ADM 71 is insulated and protected.
- the structure of the insulating protective film applied to the surface of the flexible substrate 51 a structure in which a solder resist is applied on the copper foil is frequently used.
- the coating thickness Some of them have large variations and some are easily mixed with minute pinholes, etc., and some have insufficient insulation. In such a case, absolutely The presence of the edge plate 192 prevents the surface of the flexible board 51 from coming into direct contact with the surface of the chassis accessory part 73b, thereby ensuring insulation.
- the recess (181) for housing the driver IC chip 56 has a horizontal stripe shape with respect to the surface of the chassis accessory 73b. It is designed to be formed in the following manner.
- FIG. 20 shows the configuration of the eleventh embodiment
- FIGS. 20 (a) and 20 (b) show a perspective view and a cross-sectional view before and after assembling.
- the shape of the horizontal stripe-shaped recess is such that the vertical width of the recess (201) is slightly larger than the vertical size of the driver IC chip 56, and the depth of the recess (201) is Driver
- the same force as the thickness of the IC chip 56 should be slightly thicker.
- the driver IC chip 56 is pressed and fixed in the recess (201) by the pressing force as in the ninth and tenth embodiments, the driver IC chip 56 and the elastic heat conducting member 21-1
- the sum of the thicknesses should be approximately the same as the depth of the recess (201).
- the thickness of the driver IC chip 56 depends on the strength of the pressing force and the mounting density of the multiple driver IC chips 56. In some cases, it is optimal that the depth of the dent (201) is smaller, and the optimal value will be selected accordingly.
- the eleventh embodiment it is possible to prevent excessive stress from being applied to the driver IC chip 56, and the quality of the driver IC chip 56 and its terminal connection portion can be reduced. It has the effect of improving reliability.
- the groove part is pressed against the surface of the chassis accessory 73b, the continuous cutting method.
- Various methods such as extrusion molding, which makes it easy to make long groove-like structural members by extruding a metal material through a space having a predetermined cross-sectional shape, are highly workable.
- the recess (201) extends in the horizontal direction, the mounting position of the driver IC chip 56 is offset even if there is a shift in the mounting position of the chassis accessory 73b on the chassis (73a). It is easy to cope with these variations.
- GB — forming ADM71 There is also an effect of insulating and protecting the surface of the flexible substrate 51.
- phase change type heat conductive member as the elastic heat conductive member disposed on the main heat dissipation path side.
- a grease-type or oil-compound-type heat conduction member that shows a gel or liquid state regardless of temperature fluctuations for the elastic heat conduction member arranged on the main heat dissipation path side. Even in this case, an excellent heat dissipation effect can be obtained.
- the dry IC chip and the driver module for driving the electrodes (X, ⁇ , A) of the PDP 10 are mounted on the plasma display device.
- the power consumption of the driver IC chip is relatively large, sufficient heat dissipation and holding and fixing performance can be secured, and stable quality can be obtained in terms of long-term reliability.
- GB-ADM71 and 72 enable low-cost and high-density mounting.
- the above-described embodiment can be similarly applied to a driver module for driving another electrode such as a force scanning electrode for driving the address electrode. It is.
- the above-mentioned flexible noble substrate 51 is the same as each embodiment, even if electrical components such as resistors and capacitors other than the driver IC chip 56 are mounted.
- the configuration can be applied, and similar performance and effects can be obtained.
- FDP flat display panel
- PDP plasma display panel
- EL displays Of course, it can also be applied to panels! ⁇ .
- the invention made by the present inventor has been specifically described based on the embodiments, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the invention. Needless to say, there is.
- the present invention can be used for a display device such as a module including a panel, a chassis, and a driver module, and a plasma display device including the module.
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Thermal Sciences (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Power Engineering (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CNA2005800502702A CN101208732A (zh) | 2005-08-18 | 2005-08-18 | 平板显示装置 |
PCT/JP2005/015092 WO2007020697A1 (ja) | 2005-08-18 | 2005-08-18 | フラットディスプレイ装置 |
JP2007530881A JPWO2007020697A1 (ja) | 2005-08-18 | 2005-08-18 | フラットディスプレイ装置 |
US11/922,570 US20090135095A1 (en) | 2005-08-18 | 2005-08-18 | Flat Display Device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2005/015092 WO2007020697A1 (ja) | 2005-08-18 | 2005-08-18 | フラットディスプレイ装置 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2007020697A1 true WO2007020697A1 (ja) | 2007-02-22 |
Family
ID=37757369
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/015092 WO2007020697A1 (ja) | 2005-08-18 | 2005-08-18 | フラットディスプレイ装置 |
Country Status (4)
Country | Link |
---|---|
US (1) | US20090135095A1 (ja) |
JP (1) | JPWO2007020697A1 (ja) |
CN (1) | CN101208732A (ja) |
WO (1) | WO2007020697A1 (ja) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2008262969A (ja) * | 2007-04-10 | 2008-10-30 | Brother Ind Ltd | 電子装置 |
JP2010256668A (ja) * | 2009-04-27 | 2010-11-11 | Seiko Epson Corp | 電気光学装置及び電子機器 |
US7936066B2 (en) | 2007-12-28 | 2011-05-03 | Lg Electronics Inc. | Flexible film and display device comprising the same |
WO2014002779A1 (ja) * | 2012-06-29 | 2014-01-03 | ソニー株式会社 | 表示装置 |
JP2015129891A (ja) * | 2014-01-08 | 2015-07-16 | パナソニック株式会社 | ディスプレイ装置及びパネルユニット |
JP2016024575A (ja) * | 2014-07-18 | 2016-02-08 | 株式会社東芝 | 電子機器 |
WO2016147230A1 (ja) * | 2015-03-19 | 2016-09-22 | パナソニックIpマネジメント株式会社 | 湾曲ディスプレイ装置 |
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KR101303055B1 (ko) * | 2008-12-22 | 2013-09-03 | 엘지디스플레이 주식회사 | 유기전계발광소자 |
KR101107176B1 (ko) * | 2010-02-08 | 2012-01-25 | 삼성모바일디스플레이주식회사 | 유기 발광 표시 장치 |
US9357670B2 (en) * | 2014-02-18 | 2016-05-31 | Lockheed Martin Corporation | Efficient heat transfer from conduction-cooled circuit cards |
JP2015230949A (ja) * | 2014-06-04 | 2015-12-21 | 三菱電機株式会社 | 半導体装置及びその製造方法並びに転写シート及びその製造方法 |
WO2017056722A1 (ja) * | 2015-09-29 | 2017-04-06 | 日立オートモティブシステムズ株式会社 | 電子制御装置または車載電子制御装置の製造方法 |
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Also Published As
Publication number | Publication date |
---|---|
JPWO2007020697A1 (ja) | 2009-02-19 |
US20090135095A1 (en) | 2009-05-28 |
CN101208732A (zh) | 2008-06-25 |
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