CN1979730A - Radiating structure of coverting element of plasma display - Google Patents

Abstract

The invention is for the heat dispersing structure of the transforming components of plasma display, the invention includes the driving device that is formed by several substrates, the function of which is to drive the wirings of each electrode of plasma display; several FET transforming components that are installed on each substrates, the function of which is to provide various pulse to the above-said electrode wirings; a synchro radiator with heat dispersing rod is designed at one side of the substrates in order to bring and release the heat quantity it produces by above-said transforming component outwards, then forms a plasma display that can disperse heat quantity through the installation of transforming components. The features of the invention are the above-said several transforming components that are installed respectively on the different sides of the synchro radiator. The purpose of the invention is to change the installation position of all high voltage transforming components of plasma display in the synchro radiator, when the circuit of the plasma display drives, the heat quantity it produces by high voltage transforming component can be released quickly and efficiently, and then avoid the disadvantageous effect caused by the heat quantity to the driving circuit.

Description

The radiating structure of coverting element of plasma display

Technical field

The invention relates to the technology of the circuit element heat-dissipating structure of plasma display (PDP).Refer in particular to when the PDP screen drives the radiating structure of coverting element of the present invention can discharge the heat that the FET conversion element of circuit part produces timely and effectively in running a kind of plasma display.

Background technology

Usually, the operation principle of plasma display is, the spaced walls that forms between front substrate and the back substrate constitutes 1 unit cell, in the unit, inject with neon (Ne), helium (He) or and neon, the mist of helium (Ne+He) is main discharge gas and the inert gas that contains small amount of xenon.When high frequency voltage discharged, inert gas sends vacuum ultraviolet (Vacuum Ultraviolet rays) made the light-emitting phosphor that forms between the spaced walls come display image.So plasma display is because of having the display unit that thin and light structure becomes update, extremely people's attractes attention.

Shown in Figure 1, the structure skeleton diagram of existing plasma display system.As shown in Figure 1, the composition of plasma display system comprises following a few part, the one, and the casing 110 of decision profile, it comprises front housing 111 and back cabinet (Back cover) 112 again.The 2nd, plasma panel curtain 120, its effect is the vacuum ultraviolet that the body discharge of said machine casing inside is sent, and makes light-emitting phosphor come display image.The 3rd, drive unit 130, it comprises PCB, its effect is the above-mentioned plasma display of drive controlling.The 4th, framework 140, it is connected with above-mentioned drive unit, and its effect is to discharge the heat that produces when plasma display system drives, and supports above-mentioned plasma panel.The 5th, filter (Filter) 150, it in the front of above-mentioned plasma panel and and plasma panel certain spacing distance is arranged, it egative film attached to making on the transparency glass plate (nothing illustrates).The 6th, finger-like elastic mattress sheet (FingerSpring Gasket) 160 and filter support frame (Filter Supporter) 170, its effect is to support above-mentioned filter 150, while and metal back cabinet connect into circuit.The 7th, module eyelid retractor (Module Supporter) 180, its effect is to support the PDP that has comprised above-mentioned drive unit.

Manufacturing process with existing plasma display system of above-mentioned structure is, after having made the plasma panel that shows above-mentioned image, be mounted on devices such as the framework of above-mentioned plasma panel back and drive unit, make the module of plasma panel, make casing 110 parts such as grade of decision plasma display profile then, be mounted to complete plasma display system at last.

Shown in Figure 2, the drive unit schematic diagram of existing plasma display.As shown in the figure, the drive unit of plasma display comprises Y driving substrate 45; Z keeps substrate 48; Data driver substrate 50; Control basal plate 42 and power supply board (not having diagram).

Y driving substrate 45, it drives the scanning electrode wire (Y1 to Ym) of plasma display 40.

Z keeps substrate 48, and it drives keeps electrode wires (Z1 to Zm).

Data driver substrate 50, its driving data electrode wires (X1 to Xm).

Control basal plate 42, its control Y driving substrate 45 and Z keep substrate 48 and data driver substrate 50.

Power supply board is respectively substrate 42,45,48,50 power supplies.

Turntable driving substrate 44 is housed Y driving substrate 45 and Y keeps substrate 46.The effect of turntable driving substrate 44 be generate plasma display 40 restart pulse (reset pulse) and scanning impulse (scan pulse); The effect that Y keeps substrate 46 is to generate Y to keep pulse.

Scanner driver substrate 44 is by Y meltability printed circuit (Fexible Printed Circuit) 51, for the scanning electrode wire (Y1 to Ym) of plasma display 40 provides scanning impulse (sp).

Y keeps substrate 46 and keeps pulse by scanner driver substrate 44 and Y meltability printed circuit 51 for scanning electrode wire (Y1 to Ym) Y.

Z keeps that substrate 48 generates bias pulses and Z keeps pulse, keeps electrode wires (Z1 to Zm) by Z meltability printed circuit 52 with what these two pulses offered plasma display 40.

Data driver substrate 50 generates data pulse, by X meltability printed circuit 54, this pulse is offered the data electrode wire (X1 to Xm) of plasma display 40.

Control basal plate 42 generates X, Y, Z timing control signal respectively.And control basal plate 42 offers Y driving substrate 45 to Y timing control signal by the 1st meltability printed circuit 56.Control basal plate 42 offers Z to Z timing control signal and keeps substrate 48 by the 2nd meltability printed circuit 58, and control basal plate 42 offers data driver substrate 50 to X timing control signal by the 3rd meltability printed circuit 60.

Shown in Figure 3, the plasma display system schematic diagram of existing synchronous radiator is installed.As shown in Figure 2, because each substrate 42,45,48,50 comprises is the high-speed transitions element, therefore can produce a large amount of heat.Outside for these heat release are arrived, and synchronous radiator 70 has been installed onboard.

Identical therewith, the synchronous radiator 70 that is installed on each substrate 42,45,48,50 has outstanding heat radiation pin 71, and purpose is the contact-making surface that increases synchronous radiator and air.Be the heat that each substrate 42,45,48,50 various element generates, give heat radiation pin 71, these heat release are arrived outside by large-area heat radiation pin 71 by the synchronous heat sink that is installed on the substrate.

For example, shown in Fig. 4 a, 4b, in existing turntable driving substrate 44, when PDP drives, for providing in interval, the address of scan electrode (Address)-the FET conversion element 1 of the Vy of the scanning impulse of Vy and be the FET conversion element 2 that the interval provides the Set_DN in Set_DN interval of restarting at scan electrode, be installed in the circuit board on the side of radiator 70 synchronously, make the heat conduction of distributing on each conversion element after, by the heat radiation pin 71 on other face these heat release to outside.

But, there is a problem in the heat-dissipating structure of existing conversion element 1,2 as can be seen by accompanying drawing, is exactly very near from getting mutually as two FET conversion elements of thermal source, be installed in abreast on the side of synchronous radiator 70, thereby cause radiating effect not good.

That is, because the heating conversion element is installed concentratedly on a face of synchronous radiator 70, so can not absorb heat equably, simultaneously, the heat that element discharges each other also can cause adverse influence.

A bit should be pointed out that in addition owing in 4 faces of FET conversion element 1,2, have only one side and synchronous radiator 70 to contact, so the time that heat radiation needs is longer relatively.

Summary of the invention

The present invention puts forward for solving the problem that exists in the above-mentioned existing technology.The radiating structure of coverting element of plasma display provided by the invention, its principle is mounting structure and the installation site that changes the synchronous radiator on the conversion element of plasma display, when the drives of plasma display, the heat that the high voltage conversion element produces can discharge quickly and effectively, thereby avoids because of the heat that the produces adverse effect to drive circuit.

For achieving the above object, the radiating structure of coverting element of plasma display of the present invention, by the drive unit that several substrates form, its effect is each electrode wires that drives plasma display; Be installed in several high voltages (FET) conversion element on each substrate, its effect is to provide various pulses to above-mentioned electrode wires; For heat that above-mentioned conversion element is produced to exterior conductive and release, on a side of substrate, be provided with the synchronous radiator that has the pin that dispels the heat, installation constitution by conversion element, the plasma display that formation can be dispelled the heat, feature of the present invention is: above-mentioned several conversion elements are installed in the different surfaces of synchronous radiator respectively.

Effect of the present invention:

The radiating structure of coverting element of plasma display of the present invention, when the drives of plasma display, high voltage conversion element (the FET of Vy, the FET of Set_DN) heat of Chan Shenging can discharge quickly and effectively, each element becomes symmetric shape to be installed in the both sides of synchronous radiator, thereby avoids the adverse effect of generating heat and bringing to element because of high voltage.

Special feature of the present invention is; has the plug-in type mounting groove; it has increased the contact area of conversion element with synchronous radiator; can discharge the heat that produces timely and effectively; thereby improved radiating efficiency greatly; simultaneously prevented that also element is exposed, and aspect element protection, also can obtain good effect.

For further specifying above-mentioned purpose of the present invention, design feature and effect, the present invention is described in detail below with reference to accompanying drawing.

Description of drawings

Fig. 1 is the structure skeleton diagram of existing plasma display system.

Fig. 2 is the drive unit schematic diagram of existing plasma display.

Fig. 3 is the plasma display system schematic diagram that existing synchronous radiator is installed.

Fig. 4 a, 4b are the synchronous radiator installment state schematic diagrames according to the FET element of prior art:

Fig. 4 a is the side enlarged diagram;

Fig. 4 b is the plane skeleton diagram.

Fig. 5 is the synchronous radiator installment state plane skeleton diagram of the FET element in the embodiment of the invention.

Fig. 6 is the released state schematic diagram of the fin of the formation mounting groove in the embodiment of the invention.

Fig. 7 a, 4b are heat conduction situation and this heat conduction situation schematic diagrames with bright heat-dissipating structure of relatively more existing heat-dissipating structure:

Fig. 7 a is existing 1 radiating state schematic diagram;

Fig. 7 b is 3 radiating state schematic diagrames of the present invention.

Fig. 8 is the FET element installment state schematic diagram in the another embodiment of the present invention.

The symbol description of major part in the accompanying drawing:

700: synchronous radiator 701,702: mounting groove

800: conversion element (FET of Vy)

900: conversion element (FET of Set_DN)

Embodiment

Below, be described in detail with reference to the radiating structure of coverting element specific embodiment of accompanying drawing 5 to the plasma display of 8 pairs of this invention of accompanying drawing.

Shown in Figure 5, the synchronous radiator installment state plane skeleton diagram of the FET element in the embodiment of the invention.Shown in Figure 6, the released state schematic diagram of the fin of the formation mounting groove in the embodiment of the invention.Shown in Fig. 7 a, the 7b, the heat conduction situation of the heat conduction situation of relatively more existing heat-dissipating structure and the heat-dissipating structure of this invention.Shown in Figure 8, the installment state schematic diagram of the FET element in the another embodiment of the present invention.

At first, have a look the mounting structure of the synchronous radiator that makes the conversion element heat radiation in the embodiments of the invention plasma display.As shown in Figure 5, synchronous radiator 700 has been installed, it has the function of the element radiating that makes circuit part.When PDP drives, make interval, address (Address) for screen interscan electrode provide-the FET conversion element 800 of the Vy of the scanning impulse of Vy contacts with the front of radiator 700 synchronously, make for scan electrode restart the FET conversion element 900 of Set_DN that the interval provides the Set_DN interval attached to 700 back of synchronous radiator, adhering to after finishing will have certain spacing distance between the element.

Particularly, increase as far as possible for making each conversion element 800, the 900 mutual spacing distance that is installed in above-mentioned front and back, as shown in the figure, be as the criterion with cornerwise direction, the position that two conversion elements are in symmetry is best.

Also have, as shown in Figure 6, on the relevant position of the synchronous radiator 700 that is provided with on each conversion element 800,900, form mounting groove 701,702 respectively.On mounting groove, inserted each conversion element at 800,900 o'clock, each conversion element can form 3 with the contact area of synchronous radiator 700 and contact on its cross section, because of conversion element 800,900 and synchronously radiator 700 contact area increased, so just can improve the radiating efficiency of conversion element.

Same as above, because two sides of radiator 700 have been installed conversion element 800,900 respectively synchronously, so be necessary to change the existing heat radiation pin that forms in one side (not having diagram) position.The present invention has omitted the concrete shape and the position of heat radiation pin.

Have a look the effect of the FET conversion element heat radiation process of the Vy that constitutes synchronous radiator 700 installation constitutions.

Same as above, constitute the FET conversion element 800 of Vy of synchronous radiator 700 installation constitutions and the FET conversion element 900 of Set_DN, in PDP driving process, because high temperature, element can generate heat, at this moment, the heat of generation is undertaken being discharged into the outside after the heat conduction by the synchronous radiator 700 with a side contacts.

Therefore the present invention serves as punctual with synchronous radiator 700 because conversion element 800,900 is installed in respectively on the symmetrical position of the front-back of synchronous radiator 700, and heat is transmitted to a side from both sides, so just be easy to heat is distributed.

Because conversion element 800,900 has certain spacing distance each other, so this symmetric construction can be avoided the adverse effect of generating heat mutually and causing because of interelement.

That is, the heat radiation situation of prior art is, because each conversion element all is installed in the identical one side of synchronous radiator, and the space is very little.Heat is concentrated conduction from the part of synchronous radiator region of interest, has therefore reduced heat conduction efficiency.The heat radiation situation of this invention is, each conversion element 800,900 is installed in the both sides of synchronous radiator 700 respectively, can disperse conduction to the heat that generates from the both sides of synchronous radiator, and this has just solved the problem that prior art exists.

Also have, in above-mentioned heat radiation process, each conversion element 800,900 and synchronous radiator 700 all have very big contact area, thereby have improved radiating efficiency greatly.

Shown in Fig. 7 a, existing heat radiation situation is that conversion element 1,2 has only one side to contact with synchronous radiator 70, is carrying out so heat conduction is also only limit in one side.Heat radiation situation of the present invention is, shown in Fig. 7 b, each conversion element 800,900 all is installed in the relevant mounting groove 701,702, from cross-sectional configuration as can be seen conversion element have three faces to contact with synchronous radiator 700, from whole 6 faces, remove one side and also have five faces to contact with synchronous radiator 700, can say for certain, this structure has increased conversion element and has been used for carrying out heat conducting contact area with synchronous radiator.

So,, concerning components of drive circuit, can distribute heat quickly and effectively because the increase of contact area significantly improves heat conducting efficient.

Also have; because having mounting groove 701,702, this conversion element 800,900 inserts structure; can prevent that each element is exposed, so can reduce the adverse effect that the impact because of the outside causes in setting up procedure, this also can obtain good effect aspect element protection.

The present invention not only limits above embodiment, the FET conversion element of this invention heating structure, in the thought range of this invention and other several fields personage of having certain knowledge can do more kinds of distortion.

For example, in the explanation and accompanying drawing of the foregoing description, each conversion element has been installed on the position of front and back diagonal symmetry of synchronous radiator.Identical with another embodiment of Fig. 8, conversion element 800 ', 900 ' become symmetric shape be installed in synchronous radiator 700 ' about two sides, also can exchange installed surface and change shape and implement.

Also have, the conversion element that this invention is implemented heat release also can adopt other installation constitution to come the circuit element cooling that raises for temperature in the driving process except that the FET of the FET of Vy and Set_DN.

Those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the present invention, and be not to be used as limitation of the invention, as long as in connotation scope of the present invention, all will drop in the scope of claims of the present invention variation, the modification of the above embodiment.

Claims (3)

1, a kind of radiating structure of coverting element of plasma display comprises the drive unit that is formed by several substrates, and its effect is each electrode wires that drives plasma display; Be installed in several high voltage conversion elements on each substrate, its effect is to provide various pulses to above-mentioned electrode wires; For heat that above-mentioned high voltage conversion element is produced to exterior conductive and release, on a side of substrate, be provided with the synchronous radiator that has the pin that dispels the heat; By the installation constitution of above-mentioned high voltage conversion element, the plasma display that formation can be dispelled the heat is characterized in that:

Above-mentioned several conversion elements are installed in the different surfaces of described synchronous radiator respectively.

2, the radiating structure of coverting element of plasma display as claimed in claim 1 is characterized in that:

Above-mentioned conversion element is installed in respectively on the both sides opposite face of synchronous radiator, is on the symmetrical position that is as the criterion with the cornerwise direction of synchronous radiator.

3, as the radiating structure of coverting element of claim item 1 or 2 described plasma displays, it is characterized in that:

Above-mentioned synchronous radiator has conversion element and inserts mounting groove.

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