CN1722155A - Display panel, control display panel and method for integrally molding insert material - Google Patents

Display panel, control display panel and method for integrally molding insert material Download PDF

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Publication number
CN1722155A
CN1722155A CN 200510067772 CN200510067772A CN1722155A CN 1722155 A CN1722155 A CN 1722155A CN 200510067772 CN200510067772 CN 200510067772 CN 200510067772 A CN200510067772 A CN 200510067772A CN 1722155 A CN1722155 A CN 1722155A
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China
Prior art keywords
printed
panel
display panel
display
printed panel
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CN 200510067772
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CN1722155B (en
Inventor
平田顺士
早川雄二
塚口哲宏
稻田育弘
松田正人
后藤佳秀
松冈清美
后藤薰
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Sanwa Screen Meiban K K
Panasonic Holdings Corp
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Sanwa Screen Meiban K K
Matsushita Electric Industrial Co Ltd
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Priority claimed from JP2004143224A external-priority patent/JP4429799B2/en
Application filed by Sanwa Screen Meiban K K, Matsushita Electric Industrial Co Ltd filed Critical Sanwa Screen Meiban K K
Publication of CN1722155A publication Critical patent/CN1722155A/en
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Publication of CN1722155B publication Critical patent/CN1722155B/en
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  • Push-Button Switches (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Electric Ovens (AREA)

Abstract

A display panel which is adapted to be mounted on an electronic apparatus, includes a first printed display layer, a transparent material layer that is provided on the first printed display layer, and a second printed display layer that is provided on the transparent material layer so as to correspond to the first printed display layer. The first printed display layer, the transparent material layer and the second printed display layer are integrally formed to each other. The second printed display layer is displayed from the first printed display layer side through the transparent material layer.

Description

The method of display panel, control type display panel and global formation insert material
Technical field
The present invention relates to a kind of display panel, control type display panel and be used for the global formation insert material, plate for example, produced by insert molding (insert molding) method.
Background technology
Recently, the communication facilities from the home electric device of for example micro-wave oven and electric cooker to for example mobile phone in the display part of electronic installation, is extensive use of the display panel with film and resin material global formation.Some panel is equipped with the switching function part that is called as thin film switch (flaky switch).
In order to simplify the running program of electronic installation, need display panel to have simple structure.But along with the multi-functional trend in the electronic installation, simple structure just causes complicated operations.On the contrary, in order to simplify the operation, when being arranged on for example Menu key and various switches that key is set in the display panel, the structure of the display panel complexity that can become itself, this shortcoming has caused high cost.Therefore, for the simple display panel of utilization structure and its operation of simplification, brought into use a kind of double-deck configuration that in the viewing area of display panel, has, in limited demonstration/operations area, to improve display efficiency.
For the viewing area with display panel forms double-decker, can utilize a kind of like this method, wherein on the front and rear surfaces of the panel base of the transparent resin that for example has translucence, form printed layers (paper tinsel) with interior moulding (in-molding) method.Like this, form double-decker, increased the density of information to be displayed and obtained a kind of user-friendly display panel by viewing area with display panel.
As a kind of method of global formation printed panel simultaneously that is used for, known a kind of produced by insert molding method wherein is placed on the printed panel that is printed in advance on the front surface in the mould, then, is injected in the mould resin material and pressurization; Thus (for example, JP-A-6-209849) with printed panel and resin material global formation.Aforesaid produced by insert molding comprises the place ahead embedding grammar and rear embedding grammar, and wherein the former is arranged in printed panel on the front side surface of moulded products, and the latter is arranged in printed panel on the rear side surface of the moulded products with translucence.
But, use bonding agent, double sticky tape etc. printed panel before above-mentioned and afterwards printed panel adhere in the process on the panel base of transparent resin etc., can see the adhesive surface between back printed panel and panel base from the front side, this causes not wishing the apparent condition that occurs.Simultaneously, by the light source of for example LED from behind side illuminate this display panel, once in a while, can see because light leaks inhomogeneous demonstration and/or the incorrect demonstration that causes from the front side surface of display panel.This is caused by following situation, if having any slit between back printed panel and panel base, light just is easy to from leaking therebetween so.In order to prevent uneven demonstration or incorrect demonstration, top both sides all need seamless reliably bonding; And when bonding they the time, need avoid bonding inhomogeneous and comprise dust.
As the method for coming faying face board substrate and printed panel, can utilize produced by insert molding with contact highly closely.But, when utilizing produced by insert molding to form above-mentioned display panel, all can cause problem in embedding grammar and rear embedding grammar any forwardly.
Figure 36 A has represented the switch block of display panel, and it is by the place ahead embedding grammar moulding.Figure 36 B is the schematic cross sectional views of the display part of expression same display panel.In this place ahead embedding grammar, pass the transparent part 3a that is arranged in the printed panel 3A on the display panel 1A front side surface from the light of light source 4 of illumination (opening state) side.Yet the optical path length of transparent part 3a because the thickness of panel base 6 has reached is so arrive contiguous transparent part 3b from a part of light of light source 4.Because transparent part 3b allows to pass from it from the light of the light source 5 of the non-illumination side (off status) that is positioned at Figure 36 B,, light leaks so can taking place.That is to say that the transparent part 3b that should not throw light on is illuminated.As a result, from the light of contiguous light source sneak into and demonstration causes for the unsatisfied visuality of display panel.
On the other hand, Figure 37 A represents the switch block by the display panel of rear embedding grammar moulding.Figure 37 B is the schematic cross sectional views of the display part of expression same display panel.In this rear embedding grammar, printed panel 3B is arranged on the rear surface of display panel 1B.Therefore, because near this printing of light source arrangement, so eliminated the light leakage.Like this, though when light source mutually when arranging, can not have display light under the light mixed scenario yet.But, on the other hand, when pressing switch press parts 8 repeatedly, because it is consistent with the direction of peeling off printed panel 3B from panel base 6 to push direction, so can quicken peeling off of printed panel 3B with the ON/OFF of change-over switch 7.
In addition, when when " V " direction is watched display panel 1B from Figure 37 B, because panel base 3 is transparent, thus can see and be used for display panel 1 is installed to joint unit 9 (comprising floor, hook, screw hole etc.) on the electronic installation, thus cause apparent problem.
Therefore, a kind of display panel with double-deck printed panel has been proposed now.That is to say, on front side surface by above-mentioned the place ahead structure that embedding grammar forms, another layer that superposeed, that is, and the transparent material 10 that applies at its front surface in company with printed panel 3D.Figure 38 A and 38B represent the example of this double-deck display panel.Because this structure, the printing zone by printed panel 3C stashes holding unit 9; Thereby can eliminate apparent problem.Make and to carry out switching manipulation by arranging by outermost printed panel 3D; So also can solve the problem of peeling off.But,, need twice injection moulding altogether to handle in order transparent material 10 to be attached to printed panel 3D and panel base 6 to be attached on the printed panel 3C.In addition, need another with the interconnective step of matrix band, this causes the complicated of manufacture process.In addition, the performance need of China ink or analog can stand the high temperature of long-time section.Therefore, this method is difficult to drop into actual the use.In addition, identical with the place ahead embedding grammar, shown in Figure 36 B, in this method, because the thickness of panel base 6 is not eliminated the problem that light leaks.
In addition, as the example of described produced by insert molding method, known a kind of produced by insert molding method, wherein web member fixing resin passage (for example, with reference to JP-B-5-065329 (2-3 page or leaf and Fig. 1)).
In JP-B-5-065329, in the disclosed produced by insert molding method, the inlet that communicates with cavity is arranged in the middle section of lower mould, and in the periphery of this inlet, the web member that embedding and cavity communicate makes it stretch out and returns.Inlet is supported on first jet tray, and communicates with the screw extruding briquetting machine.Web member is from being arranged in second jet tray on first jet tray and protruding and being supported by pin.This web member is positioned at cavity one side and is equipped with the flange of the ring groove that is formed on the inlet periphery of packing into.Second jet tray is equipped with the return pin of passing lower mould, and by engagement is return second jet tray with upper die, and when web member descended, the inboard of flange and ring groove was meshed.
In the produced by insert molding method according to JP-B-5-065329, web member fixing resin passage, insert material also is fixed on the web member.Therefore, the resin that is provided to cavity inside flows between insert material, and by injection pressure or comprise the squeeze pressure of injection pressure, insert material is shaped to the structure of mould.Simultaneously, material is combined into therebetween interlayer form, finishes moulding thus.
Yet, have following problem according to the produced by insert molding method of JP-B-5-065329.That is, although the front and rear surfaces of moulded products all is coated with insert material, under the state of resin material and insert material global formation, insert material can peel off once in a while in moulded products; Perhaps in forming process, resin material can flow between mould and insert material once in a while.Because the power of flowable resinous material, insert material can twist in mould once in a while; Therefore, be difficult to stably mold desirable structure.
Summary of the invention
Considered that now the problems referred to above propose the present invention.First purpose of the present invention provide a kind of display panel and with the control type display panel of its outfit, this display panel structure is simple, can simplify the operation and have high-durability under the situation that does not cause any problem of appearance.
In addition, second purpose of the present invention provides a kind of produced by insert molding method, and it can stably form desirable structure by global formation plate reliably.
Can realize above-mentioned purpose by following structure.
A kind of display panel, it is suitable for being installed on the electronic installation, comprising:
First printed display layer;
Transparent material layer is provided on first printed display layer; And
Second printed display layer, it is provided at and makes it corresponding to first printed display layer on the transparent material layer,
Wherein the whole mutually formation of first printed display layer, transparent material layer and second printed display layer; And
Wherein show second printed display layer by transparent material layer from first printed display layer, one side.
According to this display panel, can obtain demonstration with simple structure with the degree of depth and translucence, wherein show second printed display layer by transparent material layer from first printed display layer.
Preferably, first printed display layer is first printed panel, and first printed panel includes translucent base and is formed on this suprabasil first printing zone.
According to this display panel,, can increase the permanance of this printed display layer by this sheet material material by utilizing first printed display layer as first printed panel.
Preferably, second printed display layer is second printed panel, and second printed panel includes translucent base and is formed on this suprabasil second printing zone.
According to this display panel,, can increase the permanance of this printed display layer by this sheet material material by utilizing second printed display layer as second printed panel.
Preferably, first printed display layer is first printed panel, and it includes translucent base and is formed on this suprabasil first printing zone.Second printed display layer is second printed panel, and it includes translucent base and is formed on this suprabasil second printing zone.Transparent material layer has first through hole.Second printed panel has second through hole that communicates with first through hole.First printed panel has at the single flaggy corresponding to first via regions.
According to this display panel, on this lead to the hole site, by forming first printed panel of single flaggy, first printed panel can play by pushing the function of the switching manipulation part of operating.In addition, first printed panel can not peel off from transparent material layer owing to this pressing operation.
Preferably, handle through relief in the single flaggy zone in first plate.
According to this display panel, by single flaggy zone is treated to relief, can obtain the local outwards state of protuberance of plate, and the part that is treated to relief appears to and floats in the three dimensions.Thus, the part that has increased the design performance of display panel and be treated to relief is easy to visual identity.
Preferably, at least a portion of first printing zone is handled with the dielectric printing with light diffusion property.
According to this display panel, because the light of diffusion of dielectric printing zone and transmission irradiation, so only illuminate its printing zone; Can increase visuality.
Preferably, at least a portion of second printing zone is handled with the dielectric printing with light diffusion property.
According to this display panel, diffusion of dielectric printing zone and transmission irradiates light.Therefore, only illuminate its printing zone, increased visuality.In addition, prevent to see the back side from the front surface side of display panel.
Preferably, the bonding part that is used for fixing display panel is formed on the periphery of transparent material layer.First printing zone of first printed panel has zone of opacity, and it is arranged corresponding to this bonding part.
According to this display panel,, can't see this bonding part from the demonstration side of display panel by first printing zone is arranged on the position relative with the bonding part.Like this, just there has not been apparent problem.
Preferably, first printed display layer is first printed panel, and this first printed panel includes translucent base and is formed on this suprabasil first printing zone.Second printed display layer is second printed panel, and this second printed panel includes translucent base and is formed on this suprabasil second printing zone.Be formed with sweep at least a portion of transparent material layer periphery, extend to the side end surface of transparent material layer from the surface of transparent material layer the end of at least one in first printed panel and second printed panel in this sweep.
According to this display panel, form sweep, printed panel is to the side end surface bending of transparent material layer in this bending.Thus, in the produced by insert molding that is difficult to finish the accurate alignment between plate end and the transparent material layer end is handled, can prevent that plate from stretching out from the transparent material layer end, and eliminate the excision of stretching out under the situation and handle at this plate.
Preferably, first printed display layer is first printed panel, and this first printed panel includes translucent base and is formed on this suprabasil first printing zone.Second printed display layer is second printed panel, and this second printed panel includes translucent base and is formed on this suprabasil second printing zone.Provide floor portion so that it is side-prominent to second printed panel one in the periphery of transparent material layer.The surface of floor portion is connected to the surface of transparent material layer.At least form sweep on floor portion surface, extend to the side end surface of transparent material layer from the surface of transparent material layer the end of at least one in first printed panel and second printed panel in this sweep.
According to this display panel, by being extended to the front surface of floor, printed panel provides sweep, can slow down the alignment accuracy that is used for this plate is arranged into mould.Therefore, increased throughput rate and reduced production cost.
Preferably, first printed display layer is first printed panel, and this first printed panel includes translucent substrate and is formed on this suprabasil first printing zone.Second printed display layer is second printed panel, and this second printed panel includes translucent base and is formed on this suprabasil second printing zone.On transparent material layer, provide projection.The formation opening portion makes and appears projection from this opening portion in first printed panel and second printed panel at least one.Form sweep in the periphery of transparent material layer projection, extend along the side surface of transparent material layer projection the end of the opening portion periphery of at least one in first printed panel and second printed panel in this sweep.
According to this display panel, by printed panel is extended the end that can be easy to handle printed panel to the periphery of convex portions.
According to the present invention, a kind of control type display panel also is provided, comprising:
Display panel;
Be arranged in the switch press parts in first and second through holes; With
Carry out the switch element of switching manipulation by receiving an operation, in this operation, push this switch press parts by the single flaggy of first printed panel.
According to this control type display panel,, carry out switching manipulation by via printing flaggy push switch pressing component.
Preferably, first printing zone of first printed panel has zone of opacity.
According to this control type display panel,, can realize that this single flaggy is as the state that floats in the three dimensions by forming this opaque printing zone.Thus, improved visual and also increased operating performance.
According to the present invention, a kind of control type display panel also is provided, comprising:
Display panel and
Be arranged in the light source of the second printed panel side of display panel,
Wherein on second printed panel, form second printing zone with irradiation position corresponding to light source; With
Wherein second printed panel comprises the zone with the media processes with light diffusion property.
According to this control type display panel, by from light source optionally irradiates light illuminated irradiation area to the specific region of the second dielectric printing plate; Thus, can obtain to have high visual demonstration.In addition, passed the back light part of display panel, can not be reflected again or turn back to the demonstration side.Therefore, can be in narrow zone each dielectric printing area arrangements of wanting selectivity to show.Thus, can realize more highdensity demonstration, thereby improve operating performance.
Because according to display panel of the present invention, can obtain a kind of display panel, this display panel structure is simple, easy operating and have high-durability and can not cause any problem of appearance; And obtained a kind of by using this display panel that the control type display panel of above-mentioned effect is provided.
In addition,, also provide a kind of produced by insert molding method, comprising according to the present invention:
Upper die is provided, and this upper die lower mould of arranging relatively;
Plate member is provided, is arranged in the cavity that forms by upper die and lower mould; With
Resin material is ejected into the part that plate extends out from cavity, and feasible inside with this resin material cavity filling forms and this moulded products that hardens and close
Preferably, above the extension of plate, form the cast gate of sprayed resin material.
Preferably, this produced by insert molding method also comprises cutting process, is used to cut the part of the moulded products that has the extension.
According to this produced by insert molding method, above a part that plate extends from cavity, be formed for the cast gate of potting resin material.Therefore owing in the cast gate stripper plate, finish moulding, so this plate can not peel off or crooked, reliable placement in carry out global formation.Like this, plate can stably be shaped to desirable structure.
Preferably, the width of plate extension is greater than the diameter of cast gate.
According to this produced by insert molding method, because the width of plate extension forms to such an extent that be wider than the width of cast gate, so can all evenly stably bear by the cast gate applied pressure.
Preferably, observe in the direction from cast gate sprayed resin parts, cast gate is arranged in the central authorities of extension basically.
According to this produced by insert molding method, can be being applied on the plate extension that extends to the cast gate both sides by the cast gate applied pressure.Therefore, even when the temperature of potting resin material is high, also can improve the degree of accuracy of plate location.
Preferably, plate is arranged in both sides in the cavity.
According to this produced by insert molding method, by installation plate on the both sides in cavity, can realize two-sided produced by insert molding, wherein make two plates being arranged on cavity both sides global formation reliably.
Preferably, moulded products is the control type display panel with switch element.
According to this produced by insert molding method, when the moulding goods are used to have the control panel of switch, because plate global formation reliably can make the control panel that is shaped to rock-steady structure form.
According to produced by insert molding method of the present invention, for example can eliminate that plate peels off or crooked, and plate is difficult to the stable problem that is shaped to desired structure.Like this, because plate global formation has reliably obtained plate and can stablize the effect that is shaped to desired structure.
Description of drawings
By describing the preferred embodiment of the present invention in conjunction with the accompanying drawings in detail, it is clearer that above-mentioned purpose of the present invention and advantage can become, in these accompanying drawings:
Fig. 1 is the cut-open view that schematically shows the structure of display panel according to the present invention, and it is used to illustrate the characteristics of this display panel;
Fig. 2 is the front view that the micro-wave oven of display panel is installed;
Fig. 3 is that expression is assembled to decomposition diagram on the opening-closing door with display panel;
Fig. 4 is the external perspective view of display panel;
Fig. 5 A and 5B represent to be used for the header board and the back plate of Fig. 4 display panel;
Fig. 6 is the skeleton view of rear panel;
Fig. 7 represents that display panel and opening-closing door are along the cut-open view partly of VII-VII among Fig. 6;
Fig. 8 A and Fig. 8 B are illustrated in the display panel of printed medium on the plate thereafter and the view of " output " and " temperature " show state;
The show state of Fig. 9 A and 9B indication lamp display part;
Figure 10 A, 10B and 10C represent the molding procedure of display panel;
Figure 11 is the cut-open view of display panel;
Figure 12 A and 12B are that header board is arranged with the end of back plate in the amplifier section of part B shown in Figure 11;
Figure 13 is the amplification view at the C of parts shown in Figure 11;
Figure 14 is illustrated in the installation site part of knob in the display panel;
Figure 15 is the cut-open view that schematically shows the recess that forms in display panel;
Figure 16 is the partial sectional view that schematically shows the rear panel that is equipped with display panel and light source;
Figure 17 is the display panel external perspective view of a kind of version of expression display panel;
Figure 18 is the display panel cut-open view of the another kind of version of expression display panel;
Figure 19 is the cut-open view of expression according to the produced by insert molding method of second embodiment of the invention;
Figure 20 A is the cut-open view at the method for produced by insert molding shown in Figure 19 first step; Figure 20 B is the cut-open view of the method for produced by insert molding shown in Figure 19 second step; Figure 20 C is the cut-open view of the method for produced by insert molding shown in Figure 19 third step; Figure 20 D is the cut-open view of the method for produced by insert molding shown in Figure 19 the 4th step; Figure 20 E is the cut-open view of the method for produced by insert molding shown in Figure 19 the 5th step;
Figure 21 is itself and peripheral synoptic diagram in the method for produced by insert molding shown in Figure 19;
Figure 22 is the door and the peripheral external view thereof of half be used for moulding in the method for produced by insert molding shown in Figure 19 before;
Figure 23 is used for door and the peripheral external view thereof of moulding when later half in the method for produced by insert molding shown in Figure 19;
Figure 24 is the cut-open view of explanation according to the produced by insert molding method of third embodiment of the invention;
Figure 25 explanation shown in Figure 24 in the produced by insert molding method state of half before the moulding;
The state of Figure 26 explanation when moulding is later half in the produced by insert molding method shown in Figure 24;
Figure 27 is the cut-open view at the moulded products that forms by produced by insert molding shown in Figure 24;
Figure 28 is the external perspective view according to a specification product part that forms in the method for produced by insert molding shown in Figure 24;
Figure 29 is the external perspective view by a defectiveness product part that forms in the method for produced by insert molding shown in Figure 24;
Figure 30 is the skeleton view that saves the mould inside of upper die in produced by insert molding method shown in Figure 24;
Figure 31 is the explanation cut-open view that plate is installed in produced by insert molding method shown in Figure 24;
Figure 32 is the local amplification view of plate in the described produced by insert molding method of Figure 24;
Figure 33 is the wiring layout according to the moulded products of produced by insert molding method formation shown in Figure 24;
Figure 34 is the external view that is illustrated in a kind of version of plate in the produced by insert molding method shown in Figure 24;
Figure 35 is that expression is different from the external view at a kind of version of the plate shown in Figure 34;
Figure 36 A and 36B represent by the switch block of conventional the place ahead embedding grammar moulding display panel and the schematic cross sectional views of display part;
Figure 37 A and 37B represent by the switch block of conventional rear embedding grammar moulding display panel and the schematic cross sectional views of display part; With
Figure 38 A and 38B represent the schematic cross sectional views of conventional double-deck display panel example.
Embodiment
Below, the preferred embodiment to display panel according to the present invention and control type display panel in conjunction with the accompanying drawings is described in detail.
Fig. 1 is the structural representation cut-open view of explanation according to the characteristics of the display panel of first embodiment of the invention;
Display panel 100 is installed on the electronic installation.This display panel 100 mainly comprises: on the panel base 11 that forms by transparent material (for example, transparent resin), the front side surface that sticks to panel base 11 as the printed panel 13 (being called header board) of first printed display layer with stick on the rear side surface of panel base 11 printed panel 15 (being called plate afterwards) as second printed display layer.Display panel 100 is a kind of produced by insert molding goods, and wherein with header board 13 and back plate 15 global formations, the two is clipped in therebetween relatively and with panel base 11.
Header board 13 is the plates with transparent characteristic, and it is printed on the part of translucent matrix, and with the front surface that is arranged in panel base 11 sides on whole formation of printed layers 17.On the other hand, back plate 15 is coloured printings, and has opaque characteristic, it and printed layers 19 whole formation that are arranged on the front surface of panel base 11 sides.
Panel base 11 is formed by for example transparent material of ABS resin, polycarbonate resin or acryl resin.Header board 13 and back plate 15 form about 0.05 plate that arrives PET (polyethylene terephthalate) resin of 0.3mm greatly by using such as thickness.
Arrange the printed layers 19 of back plate 15 to such an extent that can show from header board 13 1 sides by panel base 11.According to display panel 100, pass transparent panel matrix 11 and header board 13 and observe back plate 15 as this embodiment.Therefore, just provided the display with the degree of depth and translucence organoleptic quality (quality sense), wherein the printed layers 17 of header board 13 is arranged in the front side, and then the printed layers 19 of plate 15 is arranged in rear side.When the thickness of panel base 11 is 1mm or more for a long time, can further improve the translucence organoleptic quality.That is, the image on printed layers 17 for example offers the character and/or the image of header board 13, is reflected on the plate 15 of back by panel base 11.Thus, because these characters and image are three dimensional representations,, also improved design performance so character and image become eye-catching.The degree of depth and translucence like this, have further been improved.In addition, owing to be whole formation, the bondability in header board 13, back plate 15 and the panel base 11 has increased; Thereby light can pass equably.Like this, can obtain having the display of stabilised quality and translucence organoleptic quality.
Form through hole 21 in the part in panel base 11 and back plate 15, it passes panel base 11 and back plate 15 at the same position place.Header board 13 forms single flaggy in the zone 23 corresponding to through hole 21.The protuberance that has formed to panels outside is handled in the zone 23 of header board 13 through relief.Switch press parts 25 are accommodated in the through hole 21.When switch press parts 25 are pressed in the zone 23 (being called embossed section) of header board 13, switch 27 switches between Kai Heguan according to pressing operation.
When moulding display panel 100, make header board 13 plastic yield formation embossed section 23 by convex mold being pushed header board 13.By become flat board or concave shape from convex, embossed section 23 can be used as pushbutton switch.Carry out painted processing by embossed section 23 and the relief peripheral edge portion 29 that prints header board 13 by printing, make to view switch press parts 25 and switch 27 from the outside of display panel 100.
And embossed section 23 seems with three dimensional constitution emersion on header board 13.Therefore, improved the design performance of the display panel 100 and then visuality of embossed section 23 is increased.
Light source 31 and 33 (for example, LED) is arranged in back plate 15 1 sides of display panel 100. Light source 31 and 33 and display panel 100 separate.The regional 19a of back plate 15 and 19b are corresponding to the irradiation position of light source 31 and 33, and the process dielectric printing, thereby are endowed the light diffusion property.Dielectric printing is that a kind of use is not with the printing process of the China ink of pigment.When from bright dielectric printing zone 19a of the illumination of light source and 19b, light passes when being spread and launches from whole dielectric printing zone.Removing the extra-regional zone of dielectric printing also passes from the light of light source preventing through the shielding printing on printed layers.In addition, preferably can arrange like this, each light source 31 and 33 be separated with the interference of avoiding irradiates light and the influence of exterior light with partition wall 35.
When light source 31 is lighted (opening) and light source 33 and closed (pass), illuminated brightly towards dielectric printing zone the whole of 19a that open state light source 31.On the other hand, as dielectric printing zone 19b during, can only see reflection of light light from display surface one side towards the light source 33 of off status.In other words, by opening/ closing light source 31 and 33 optionally, can selectivity illuminate dielectric printing zone 19a and 19b.Therefore, for example, can show the situation of the electronic equipment that display panel 100 is installed.
Can be reflected into back light L by the boundary surface of panel base 11 from the light of light source 31 outputs.But back light L is secondary reflection or turn back to the demonstration side more not.Therefore, even when light source 31 and 33 placed adjacent, can not show light leak yet.Like this, just obtained high-quality display.
In the end of display panel 100, the whole engagement hook 37 that forms, it is fixed to joint unit on the object (for example, electronic installation) to be joined to display panel 100 as being used for.Therefore, if header board 13 is transparent, so because panel base 11 also is transparent, so following problem can occur; That is, can see engagement hook 37 from the demonstration side.Therefore, thus header board 13 has one painted opaque printed regional 39 in the zone corresponding to engagement hook 37 at least.This printing zone 39 is from showing the engagement hook 37 of side hidden surface board substrate 11.Thus, eliminated apparent problem.In addition, because outer peripheral areas is made of printing zone 39, thus can obtain satisfied design performance, and can hide the part that does not show and without any awkward sensation.
Below, wherein above-mentioned display panel 100 is installed to as the example on the micro-wave oven of electronic installation describing one.
Fig. 2 is the front view that is equipped with according to the micro-wave oven of display panel of the present invention.
Micro-wave oven 200 is a kind of heat cooking apparatus, and it provides high frequency waves (microwave) to wait this object is carried out heat treated in the heating chamber that holds heated material.Heating chamber is formed on the inside of the box main body container 41 that has front openings.Provide one to be used for the opening-closing door 43 of opening and closing in the front of main body container 41 heated material is put into/taken out heating chamber.Opening-closing door 43 is connected by the lower limb of hinge with main body container 41 in its lower end, makes its freedom to be extracted forward opening, and pushes to close.In the bottom of opening-closing door 43, be equipped with according to display panel 100 of the present invention.
In this case, display panel 100 also as the guidance panel of micro-wave oven 200, disposes Menu key etc.Except various operating switchs, for example be used to indicate the initiating key that starts heating, also provide manual mode cooking key; Be used to select the automatic-cooking key of ready cooking program; Be used to be provided with the knob 45 of temperature, time or similar value; Be used on liquid crystal indicator etc., showing the display part 47 of the situation that is provided with; And the light source 49 that is used to notify the notification unit of setting menu, operation steps etc.Display panel 100 is connected on this device in the bottom below the opening-closing door 43 by engagement hook 37.
Fig. 3 is the decomposition diagram that explanation is assembled to display panel the step on the opening-closing door.
In the bottom of opening-closing door 43, form operation and control module spatial accommodation 51.In this operation and control module spatial accommodation 51, along rear panel 55 fixed display panel 100 of circuit board 53 are installed, make rear panel 55 press from both sides they between.As shown in Figure 1, switch press parts 25, switch 27, light source 31 and 33, partition wall 35 etc. are arranged on the rear panel 55.By rear panel 55 being assembled on the display panel 100, just having constituted the control type display panel that has input and show (notice) function.Here, by the agency of the control type display panel is assembled to structure on the opening-closing door 43.But the control type display panel also can be arranged on the part that is different from opening-closing door 43.
Here, will the example of micro-wave oven 200 structures be described in further detail, provide therein according to display panel 100 of the present invention.
Fig. 4 is the external perspective view of display panel 100.
This display panel 100 has: embossed section 57, and it is corresponding to the heating mode options button of " wave band (range) " that for example illustrate as an example, " baking ", " barbecue/steaming "; Embossed section 59, it adds hot key corresponding to finishing according to the program of wherein having set specific heating object (heated beverage) here automatically to the certain objects heating; Embossed section 61, it is corresponding to the cancel key of cancellation operation; And embossed section 63, the start key that it begins to heat corresponding to indication.Simultaneously, display panel 100 also has a plurality of selections display part 69, the viewing area 65 that for example has the lamp of when roasting heating, lighting, with the viewing area 67 that has the lamp of lighting when steaming heating, the selection display part 69 of wherein optionally opening as notification unit is provided with content with the notice heating.
In addition, display panel 100 has the transparent part 71 of the display part 47 that is used for shown in Fig. 2, and is formed with the opening 73 that is used to assemble knob 45.Near the installation site of knob 45, be furnished with the viewing area 75 that selectivity is lighted corresponding to the heating mode setting that comprises character string etc.
As shown in Figure 1, the display panel 100 with above-mentioned outward appearance comprises following configuration, and header board 13 and back plate 15 have printed layers respectively, with panel base 11 whole formation.
Fig. 5 A and 5B represent to be used for the header board and the back plate of the display panel shown in Fig. 4.
Header board 13 shown in Fig. 5 A has the embossed section 57 corresponding to the heating mode options button, corresponding to the embossed section 59 that adds hot key automatically, corresponding to the embossed section 61 of cancel key with corresponding to the embossed section 63 of start key; They each all be printed on the character and the opaque substrate of this key content of indication.On embossed section 63, be formed for the transparent part 77 of optical indicator corresponding to start key.Form strip dielectric printing zone 79a and 79b along the marginal portion, upper and lower, to comprise and the pairing position, marginal portion of arranging display panel 100 engagement hook 37.Simultaneously, form printing zone in the periphery of opening 73 respectively.Zone the printing zone in above-mentioned header board 13 is transparent.
Back plate 15 is formed with the opening 73 identical with header board 13.Dielectric printing is all passed through in the part of viewing area 75, lamp display part 69 and zone 83 and 84; Print other character string (" 1-layer " (1-shelf), " 2-layer ", " barbecue ", " steaming ", " spontaneous menu " etc.) in opaque mode.In addition, irrelevant with these demonstrations, will be used as the substrate of whole front panel for painted opaque pattern 85 printings of whole front panel.
These header boards 13 and back plate 15 integral installations are fitted on the panel base 11 with translucence.Thus, obtain the display shown in Fig. 4 with the degree of depth and translucent organoleptic quality.Simultaneously, the part that is used to operate micro-wave oven is printed on header board 13 1 sides, and content that is provided with and state are presented at back plate 15 1 sides.Thus, improve the visuality and the operating performance of micro-wave oven, also increased user friendly.
Below, will introduce in detail from the illuminating effect of display panel 100 back sides.
Fig. 6 is the skeleton view of rear panel.Fig. 7 is the display panel part cut open along the line VII-VII among Fig. 6 of expression and the sectional view of opening-closing door.
As shown in Figure 6, in the circuit board 53 that is assembled to rear panel 55, be furnished with a plurality of LED 87 as display light source corresponding to the lamplight display part 69 in the plate 15 of back, viewing area 75 and zone 83 and 84.In addition, be formed for covering the partition wall 35 of each LED 87 peripheries.In Fig. 7, show in detail the relation between each LED 87 and the partition wall 35.
In display panel 100, as mentioned above, the light of being exported by light source can produce back light by the boundary surface reflection of panel base 11 once in a while.Yet back light secondary reflection can not got back to the demonstration side more yet.Therefore, even when arranging closely mutually between the LED 87, can not show the bright dipping leakage yet.
In addition, LED 87 is separated away from display panel 100 layouts and by partition wall 35 and surrounding environment.Thus, prevent that exterior light from entering the inboard of partition wall 35.Like this, only have LED 87 and optionally shine display panel 100 towards the light of display panel 100 compositions straight.Because above-mentioned configuration is played the effect that prevents that light from leaking in many ways, thereby has been obtained higher-quality demonstration.
Fig. 8 and Fig. 9 are illustrated in the state that prevents that light from throwing light on and showing when leaking.
Fig. 8 shows dielectric printing in the viewing area 75 of back on the plate 15, shows the open/close state of " output " and " temperature " at Fig. 8 A and Fig. 8 B.As mentioned above, by carrying out dielectric printing, when not illuminating the character part, just seem not have character in the character (literal of describing) of for example " output " and " temperature " part; Obtain a kind of simple design thus.As a result, obtained a kind of convenient display mode that uses.
Fig. 8 A represents a kind of state, wherein when the last content to be shown of 47 (with reference to figure 2) is output valve in the display part, only illuminates the character of " output ".Fig. 8 B represents a kind of state, wherein when 47 (with reference to figure 2) when content to be shown is temperature, only illuminate the character of " temperature " in the display part.As mentioned above, by for example illuminating " output " and " temperature " character itself, can be clearly to user notification content displayed and can not misunderstanding on display part 47.
In the aforesaid Notification Method that character itself is illuminated, can see all characters that need demonstration and around it, not find that the user can discern shown content under the unnecessary state that illuminates demonstration.Therefore, need illuminate the character that will show with uniform brightness; And need guarantee to prevent to illuminate the character that should not show near it.But () trend toward miniaturization for example, micro-wave oven, it is limited to be used to the Free Region that shows on display panel, and display density increases because electronic installation.In addition, follow the trend of higher device performance, the content displayed amount also increasing.As a result, require to show the character that need differentiate mutually very close to each otherly.Therefore, form in the method for conventional pre-leakage against sunshine of partition wall 35 around light source therein, can produce the problem that adjacent character is illuminated.
Above-mentioned situation is identical with situation in the lamplight display part shown in Fig. 9.Must arrange the distribution distance D of LED forr a short time, and must prevent to leak into the side that to close at the light that will open a side.But, in the method for the pre-leakage against sunshine of routine, be difficult to prevent that with a kind of reliable method light from leaking.
Yet, in display panel according to the present invention,, do not leak so light can not take place owing to adopted a kind of back light of light source that prevents reliably to be reflected to the configuration that shows side.Therefore, by using this display panel 100, the partition wall 35 of leakage method design pre-against sunshine routinely guarantees not have the stable high-quality display of light leakage, and does not need special Change In Design.
Below, will briefly introduce the example of the forming method of this display panel 100.
Figure 10 represents the moulding order of display panel.
Display panel 100 is extruding and moulding in the mould of injection (mo(u)lding) machine.At first, shown in Figure 10 A, header board 13 is placed on the mould 91; And a back plate 15 is placed on another mould 93.Mould 91 is formed with the concave part 91a that is used to form embossed section; On mould 93, be formed with convex portions 93a corresponding to concave part 91a.Back plate 15 is placed on the mould 93, and embossed section 93a is inserted by opening 73.
Then, shown in Figure 10 B, close die 91 and 93 and mold temperature is controlled at a predetermined temperature.Be injected into the moulding material of for example transparent resin material in the mould and remain under the certain pressure.Here, moulding material is injected between the header board 13 and back plate 15 that is arranged in the mould cavity.Because the convex portions 93a of mould 93 is against the concave part 91a extruding header board 13 of mould 91, header board 13 is handled along concave part 91a distortion and through relief.Then, shown in Figure 10 C, after the cooling predetermined amount of time, open mould, and take out the product (display panel 100) after the moulding.In this method, header board 13 and back plate 15 are formed integral body with panel base 11 (folded moulding material) therebetween, embossed section is formed on the part of header board 13.
Below, will specifically describe display panel 100 in order.
Figure 11 is the cut-open view of this display panel.Figure 12 A and 12B are illustrated respectively in the example of the end construction of header board and back plate in the amplifier section of the B of part shown in Figure 11.Figure 13 is the amplification profile in the portion C shown in Figure 11.
The example of having represented part B in Figure 11 in Figure 12 A, the end of header board 13 extends to side end surface 11b to form a sweep 97 from the front side surface 11a of panel base 11.
The end of back plate 15 is arranged on the more inner part of the side end surface 11b of ratio panels matrix 11.Its reason is as described below; That is, in produced by insert molding was handled, the accurate aligning between plate end and resin end was difficult, and when plate when stretch out the resin end, moulded products is handled or plate is cut off.In addition, the back plate is being arranged under the situation of resin inner end portion, when observing from the front side of display panel 100, the junction surface between back plate 15 and resin portion are divided becomes and can see, will cause apparent problem if this junction surface intactly stayed.Therefore, form dielectric printing zone 39 with hiding this junction surface by end, thereby eliminated apparent problem at header board 13.As at the plate end of header board 13 and the aligning between the resin end,, can eliminate offset problem by forming sweep 97 with top identical method according to such configuration.
In sweep 97, the length L a that turns to from header board 13 ends is 2mm or bigger at least, comes to reserve allowance for skew.In addition, form dielectric printing zone 39, wherein the length L b from the side end surface 11b of panel base 11 is 2mm or bigger.As for the end of back plate 15, preferably be set to 0.3mm or littler from the length L c of the side end surface 11b of panel base 11.
When panel base 11 has sufficient room on thickness, can arrange to make back plate 15 shown in Figure 12 B, turn to.
In portion C shown in Figure 13, form floor 99 in the end of panel base 11.In order to prevent to see that from the front side floor 99, header board 13 have dielectric printing zone 39 and opaque printing zone 40.The end of header board 13 turns to the inner surface 99a of floor 99 with the length of La.On the other hand, the end of back plate 15 turns to the inner surface 99b of floor 99 with the length of Ld.Length L d preferably is set to 1mm or bigger, with the allowance of guaranteeing that plate is aimed at.
In addition, on the outer surface 99a of floor 99, be formed for injecting the opening 98 of transparent resin material into panel base 11.The defective that is caused by cut-out opening 98 after moulding etc. is hidden by dielectric printing zone 39 and opaque printing zone 40.
Below, will introduce a kind of configuration, wherein header board and back plate are formed on the convex portions and through hole that forms in the part of front surface of display panel 100.
Figure 14 illustrates the mounting portion of display panel upper knob.
The panel base 11 of display panel 100 has opening 73, by this opening 73 insert be used to assemble knob (referring to figs. 2 and 3) axle.In the periphery of this through hole, form to the convex portions 103 that shows that side is protruded.Header board 13 extends along the outer peripheral surface of this convex portions 103, and the front end surface 103a length that its end is positioned at apart from convex portions 103 is the position of Le.Length L e is set to 1mm or littler.Back plate 15 is turned to the marginal portion of opening 73 by length L d.Length L d is set to 0.5mm or bigger.As mentioned above, the end of header board 13 is arranged on convex portions 103 front end surface 103a the place ahead a bit on, and in the plate 15 of back, form sweep 105.Thus, the end layout of each plate is appropriate, also simplified manufacture process.
Below, will introduce a kind of structure, wherein form the back plate on the convex portions that in the front surface part of display panel 100, forms.
Figure 15 is the schematic cross sectional views of the concave part that forms on the display panel.
In the panel base 11 of display panel 100, on the position relative, form concave part 111 with display part 47 (with reference to figure 2).Convex front surface along concave part 111 in corresponding to the zone of concave part 111 forms back plate 15.Zone towards the back plate 15 of this concave part 111 is transparent.Therefore, back plate 15 is being deformed into convex in advance in the position of display part 47, and in this convex part, finishes two-sided produced by insert molding.
In this structure, owing on the position of display device 117, forming concave part 111, thus can reduce the distance between display device 117 and display panel 100, shown in P1 among Figure 15.As a result, increased the transparency of demonstration light, and widened the visual angle.
Conventional, form display panel 100 by having about 0.2 to 0.3mm flexible plate.In this case, in order to prevent to contact with it, according to the layout display panel 100 that leaves a predetermined space distance and the display device of display part, as by among Figure 15 shown in the dotted line P2 at finger presses display part time-sharing display device.As a result, limited the visual angle of viewing area and display unit.But, because layout of the present invention can greatly be alleviated above-mentioned restriction.As for concave part 111, be set to about 1mm by recessed amount H from the front surface of panel base 11, can guarantee the necessary degree of depth of back plate 14 diversion treatments.
Below, will introduce the end construction of display panel 100.
Figure 16 is the partial sectional view that schematically shows the rear panel with display panel and light source.Comprise light source 31 with 33 and the rear panel 55 of partition wall 35 be assembled to display panel 100 and show the relative rear side of side.Printed layers 19a from the bright header board 13 of illumination of the light source 31 of open mode.Here, illumination light is passed display panel 100 directives and is shown side, and owing to reflection or similar effect at border surface, the side end surface of its a part of light directive panel base 11.In this case, produced so-called plain edge (light edge) phenomenon that illuminates display panel 100 ends.Therefore, in structure of the present invention, the side end surface of display panel 100 is formed with dielectric printing zone 39, hides above-mentioned plain edge thus.Here, used dielectric printing zone 39.Yet the present invention is not subjected to top restriction.Can adopt stereosopic printing (solid printing).In Figure 16, shown the upper and lower side end surface on display panel 100.But, if necessary, preferably can outside display panel 100 whole, place the formation printing zone.Thus, can well plain edge be stashed.Therefore, can prevent apparent problem reliably.
Below, with the version that introduction has following structure, wherein the joint unit of display panel does not assemble hook.
Figure 17 is the external perspective view according to the display panel of this version.
Divide at the side end of the panel base 11 of display panel 150 and to form floor 121.In floor 121, form through hole 123.Arrange that display panel 150 makes display panel 150 itself not be with engagement hook, but on object to be joined, be formed with engagement hook; And thus, engagement hook is engaged with through hole 123 in the display panel 150.In addition, if necessary, can form by the fixing through hole 125 of screw thread, to increase the strength of joint of assembling object.
According to the structure of display panel 150, only form simple floor 121 and through hole 123, replace being formed on the engagement hook in a plurality of.Therefore simplify the structure and manufacture process.
In addition, this display panel can have following structure.
Figure 18 is the cut-open view of display panel.
The display panel 160 of this structure is formed with step shape part 68 on an one of rear side lamplight display part 69 places of placement-face board substrate 11.That is to say, on the plate 15 of back, arrange characters such as " barbecue ", " steaming ", make these characters be arranged on the inclined surface 70 and 72 of panel base 11 step shape parts 68.
The normal direction of inclined surface 70 and 72 is pointed to the user of display panel 160.Thus, can visually discern the character that is arranged on inclined surface 70 and 72 at an easy rate.Can obtain the outward appearance and the high-quality sense organ of display panel 160 graces.
Hereinafter, a plurality of examples of the preferred implementation of produced by insert molding method according to the present invention will be introduced with reference to the accompanying drawings in detail.
Figure 19 is the cut-open view of explanation according to the produced by insert molding method of second embodiment of the invention.Figure 20 A represents to be used for molding procedure in the produced by insert molding method shown in Figure 19 to 20E.Figure 21 is cast gate and a peripheral explanatory view thereof in the method for produced by insert molding shown in Figure 19.Figure 22 is preceding half cast gate and a peripheral external view thereof in the method for produced by insert molding shown in Figure 19.Figure 23 is cast gate and a peripheral external view thereof when later half in the method for produced by insert molding shown in Figure 19.
As shown in figure 19, the produced by insert molding method of second embodiment of the invention is used the make-up machine 10 that comprises upper die 11 and lower mould 12.Plate 14 is placed on lower mould 12 1 sides in the cavity 13 that forms by upper die 11 and lower mould 12.
In upper die 11, form concave part 15, and in lower mould 12, form convex portions 16 towards concave surface 15.Between the end of the end of upper die 11 and lower mould 12, be formed for the cast gate 17 of potting resin material.Upper die 11 and lower mould 12 are at separator bar PL place separately.
Plate 14 is to be made by the sheet member of the macromolecular material with 160 to 180 ℃ of thermal resistances.Form the extension 18 of extending to the end of lower mould 12 in base end one side.On the extension 18 of plate 14, arrange cast gate 17.
Below, will introduce the forming step of the produced by insert molding that is undertaken by make-up machine 10 with reference to figure 20A to 20E.
Shown in Figure 20 A, in the first step, make upper die 11 leave lower mould 12.
Shown in Figure 20 B, in second step, installation plate 14 on lower mould 12.Here, the extension 18 of installation plate 14 is extended it to lower mould 12 ends on lower mould 12.In a side relative, form sweep 19 in the end of plate 14 with extension 18.Sweep 19 is not to curve the right angle consistent with the marginal portion of upper die 11, but curves about 45 angle.
Shown in Figure 20 C, in the 3rd step, upper die travel mechanism (not shown) makes upper die 11 begin to move to lower mould 12, and when forming the cavity 13 of predetermined volumes between lower mould 12 and upper die 11, stops to move of upper die 11.From being arranged in the cast gate 17 of 18 tops, plate 14 extensions, resin material 20 pressurizations of high temperature heating and be provided to the inside of cavity 13.Here, as for resin material 20, can use forming temperature is that 270 to 280 ℃ polycarbonate resin, forming temperature is the acrylonitrile-butadiene-styrene (ABS)s (ABS) that 240 ℃ elasticity pet resin (PET) and forming temperature are 230 ℃.Because cast gate 17 is the tops that are arranged in extension 18, so in extruding during this extension 18, the resin material 20 that is provided to cavity 13 inside from cast gate 17 provides in whole cavity 13 inside.And this resin material cools off at the fixed time.
In the 4th step, shown in Figure 20 D, upper die 11 is oppositely moved by upper die travel mechanism.Here, plate 14 and resin material 20 global formations, and extension 18 also with resin material 20 global formations.Because the motion of pressurization resin material 20, the sweep 19 of plate 14 is shaped to the right angle.
In the 5th step, shown in Figure 20 E, remove profiled part 21, wherein the extension 18 and resin material 20 global formations of plate 14 from the register pin (not shown) of lower mould 12.Cast gate 17 parts of the extension 18 of slave plate 14 and resin material 20 are removed deburring; So just formed moulded products 22.
As shown in figure 21, the part that extend up to cast gate 17 both sides the extension of plate 14 18, its width W are (for example, 10mm) greater than the internal diameter φ D of cast gate 17 (for example, 7mm).Thus, can bear 20 applied pressures of resin material that provide by cast gate 17 uniformly and stably.Thus, plate 14 in forming process on the precalculated position at relative resin material 20 under the situation that is not subjected to displacement global formation.
As Figure 22 and shown in Figure 23, in the third step shown in Figure 20 C,, the resin material 20 of high temperature heating is provided to the inside of cavity 13 from being arranged in the cast gate 17 of 18 tops, plate 14 extensions.At this moment, when the pressure support extension 18 of the resin material 20 that injects from cast gate 17,, the extension 18 of plate 14 leaves even floating from the lower mould 12 of bending.Because from the big pressure of the resin material 20 of extension 18 sides, plate 14 closely contacts with resin material 20 reliably.
According to the produced by insert molding method of second embodiment, above the extension 18 of the plate 14 that extends out from cavity 13, be formed for the cast gate 17b of potting resin material.Therefore, in cast gate 17 lower platens 14, carry out moulding.Do not peel off or crooked situation under with plate 14 accurately location and global formations; Thus, can stably plate 14 be shaped to the structure of wanting.
Simultaneously, according to the produced by insert molding method of second embodiment, the width W of formed plate 14 extensions 18 is wideer than the diameter phi D of cast gate 17.Therefore, can bear pressure uniformly and stably from cast gate 17.
In addition, according to the produced by insert molding method of second embodiment, the pressure from cast gate 17 can be applied to the extension 18 of the plate 14 that always extends to cast gate 17 both sides.Even the temperature of the resin material 20 of filling is very high, the accurate positioning that also can improve plate 14.
Below, will introduce the produced by insert molding method of third embodiment of the invention with reference to Figure 24 to 35.Figure 24 is the cut-open view of explanation according to the produced by insert molding method of third embodiment of the invention.Figure 25 explanation shown in Figure 24 in the produced by insert molding method state of half before the moulding.The state of Figure 26 explanation when moulding is later half in the produced by insert molding method shown in Figure 24.Figure 27 is according to the cut-open view at the moulded products that forms by produced by insert molding shown in Figure 24.Figure 28 is the external perspective view according to a specification product part that forms in the method for produced by insert molding shown in Figure 24.Figure 29 is the external perspective view by a defectiveness product part that forms in the method for produced by insert molding shown in Figure 24.
Figure 30 is the skeleton view of mould inside in produced by insert molding method shown in Figure 24, has wherein omitted upper die.Figure 31 is the explanation cut-open view that plate is installed in produced by insert molding method shown in Figure 24.Figure 32 is the local amplification view of plate in the described produced by insert molding method of Figure 24.Figure 33 is the wiring layout according to the moulded products of produced by insert molding method formation shown in Figure 24.Figure 34 is the external view of plate version in produced by insert molding method shown in Figure 24.Figure 35 is that expression is different from the external view at the version of the plate shown in Figure 34.As for second embodiment in identical or suitable part, will omit or simplify its introduction.
As shown in figure 24, use a kind of make-up machine 30 that is equipped with upper die 31 and lower mould 32 according to the produced by insert molding method of the 3rd embodiment.Cloth postpone plate 34 on lower mould 32 1 sides in the cavity 33 that forms by upper die 31 and lower mould 32; And on cavity 33 internal upper part moulds 31 1 sides, arrange header board 35.
In upper die 31, formation has hemispheric spherical female face portion 37 in the middle section of concave part 36; In lower mould 32, formation has hemispheric spherical female face portion 39 in the middle section of convex portions 38, and it is arranged towards spherical female face portion 37.Between the end of the end of upper die 31 and lower mould 32, be formed for the cast gate 40 of potting resin material.Cast gate 40 is arranged in 41 tops, extension of back plate 34.
Back plate 34 is plate member of transparent or semitransparent resin; In the spherical male face portion 39 of lower mould 32, form circular open 42, and at the fractal one-tenth sweep 43 of the inner edge portion of this opening 42.This sweep 43 is not to be bent into the right angle, but is bent into about miter angle.In addition, form sweep 44 in the end of back plate 34 with extension 41 relative sides.
Header board 35 is the elastically deformable plates that formed by transparent or semitransparent resin.For the cavity 33 that forms predetermined volumes, form cheese convex surfaces part 45, under the state of lower mould 32 motions, be a single state when upper die 31 with sheet metal forming.
Shown in Figure 25 and 26, when the resin material 46 that high temperature is heated from the cast gate 40 that is arranged in 41 tops, plate 34 extensions pressurizes and is provided to the inside of cavity 33, even during when 41 bendings of the extension of back plate 34 and from lower mould 32 disengagings, because this extension 41 is by resin material 46 extruding and the support of injecting from cast gate 40, so, because from the immense pressure of extension 41 side resin materials 46, back plate 34 closely contacts with resin material 46 reliably with header board 35.
As shown in figure 27, from cast gate 40, with resin material 46 pressurization and be provided in the cavity 33.After cooling, with mould 31 with opened in 32 minutes.Burr is removed from the extension 41 and cast gate 40 parts the resin material 46 of back plate 34.Like this, as the header board 34 of front surface with as back plate 35 global formations of rear surface, each all is arranged on the precalculated position; Form moulded products 47 thus.In moulded products 47, owing to do not have to provide resin material 46 to the trailing flank of header board 35 convex surfaces parts 45, so formed a cylindrical hole 48.Here, because the motion of pressurization resin material 46, the sweep 43 of back plate 34 is shaped to the right angle, and its sweep 43 is shaped to a plane.When removable state that is inserted in the hole 48 of switch (shown in Figure 33) 85 this convex surfaces part 45 of use down, and the rear surface of removable front end and convex surfaces part 45 contacts.
As shown in figure 28, when moulded products 47 is used as display panel, in the front surface of the convex surfaces part 45 in header board 35, the cue mark 49 that printing one is scheduled to.Thus, by header board 35 is accurately navigated to the precalculated position and and resin material 46 global formations, can this cue mark 49 be set with symmetrical manner in the middle section of convex surfaces part 45.
As shown in figure 29, when non-header board 35 moulding that accurately navigate to the precalculated position, this cue mark 49 can be removed from the middle section of convex surfaces part 45, causes substandard products.As mentioned above, when moulded products 47 is used as display panel, need be with respect to accurately locating with the whole switch that assembles of display panel, lamp etc.By header board 35 and back plate 34 are accurately navigated on the precalculated position of resin material 46, can form the high-quality moulded products 47 that does not have displacement with respect to switch, lamp etc.
As shown in figure 30, in the extension 41 of back plate 34, form supported hole 50 in endface position with respect to cast gate 40 positions.Come positioning supports hole 50 by inserting axle 51, this axle 51 is outstanding formation on lower mould 32.Usually, in mould, be formed for by the hole of vacuum draw plate to keep.But in the method, not only plate flows (flow) in mould and displacement when potting resin, and mark has also been stayed on the rear surface of moulded products.Therefore, by axle 51 is inserted in the supported hole 50, can with displacement back plate 34 be positioned on the precalculated position.
As shown in figure 31, because the shaped ends bending so have only by header board 35 is embedded in the concave part 36 of upper die 31, just can be located.Spherical male face portion 39 elastic deformations by lower mould 32 are dome-shaped, have formed convex surfaces part 45.
Shown in figure 32, the sweep 43 of back plate 34 split sheds 42 was not curved the right angle before moulding, sweep 43 is shaped to the right angle by the motion of pressurization resin material 46.
As shown in figure 33, moulded products 47 is installed on the electronic installation 80, as display panel 90.In this electronic installation 80, on the circuit board 82 that is assembled on the rear panel 81, be electrically connected a plurality of LED83.A plurality of LED 83 show lamplight display part, viewing area and the zone that is formed by the partition wall 84 that is formed on the plate 34 of back respectively.In removable 86 hole 48 that is inserted in the convex surfaces part 45 of switch 85, removable 86 front end is realized contacting with the rear surface of convex surfaces part 45.In this electronic installation 80,, make removable 86 and move so that switch 85 is realized switching by pressing down convex surfaces part 45.
Below, will be presented in the version of method for supporting in the plate 34 of back with reference to Figure 34.
As shown in figure 34, in this version, on the marginal portion of back plate 34, form a plurality of extensions 41, for example eight extensions.Therefore, because these a plurality of extensions 41 can apply uniform anchorage force to cast gate 40.Like this, can further increase bearing accuracy.
Below, be presented in the another kind of version of method for supporting in the plate 34 of back with reference to Figure 35.
As shown in figure 35, according to this version, on the whole periphery of back plate 34 peripheries of lower mould 32 1 sides, form whole extension 41.Therefore, owing to be arranged in the extension 41 of entire circumference, further improved near the anchorage force the cast gate 40.Like this, can further increase bearing accuracy.
According to the produced by insert molding method of the 3rd embodiment, can carry out two-sided produced by insert molding, wherein make the back plate 34 that is arranged in cavity 33 both sides and header board 35 global formation stably.
In addition,, be used to have the moulded products 47 of the display panel 90 of switch 85, can form a kind of display panel, wherein back plate 34 and header board 35 global formation and form a stable structure reliably by use according to the produced by insert molding method of the 3rd embodiment.
A kind of like this situation is arranged, wherein together with the combination of two single face produced by insert molding parts, mutual superposition.In this case, the external structure of two moulded products is difficult to accomplish consistent with each other, therefore can produce the slit between them after their mutual superposition.Like this, be difficult to come in conjunction with these moulded products with high precision and high yield.But,, can when not having ground, slit alignment moulded products external structure, realize high-precision combination by carrying out the present invention.
The present invention is not limited to the foregoing description, but can carry out suitable change, modification etc.
For example, single basically cast gate is just passable.But, consider the displacement of resin material, can additionally form a plurality of cast gates.Under these circumstances, these cast gates preferably are arranged in the top of plate extension.
Although specific preferred embodiment is illustrated and introduces, very clear to those skilled in the art, on the basis of the present invention's instruction, can carry out variations and modifications.Can be clear that these variations and modification are all within spirit of the present invention, scope and the intention that is indicated in the appended claims.
The present invention is based on Japanese patent application No.2004-039446 that submits to February 17 in 2004 and the Japanese patent application No.2004-143224 that submits on May 13rd, 2004, and its content is incorporated herein by reference.

Claims (21)

1, a kind of display panel, it is suitable for being installed on the electronic installation, comprising:
First printed display layer;
Transparent material layer is provided on described first printed display layer; And
Second printed display layer is provided on the described transparent material layer and makes corresponding to described first printed display layer,
Wherein the whole mutually formation of described first printed display layer, described transparent material layer and described second printed display layer; And
Wherein show described second printed display layer by described transparent material layer from described first printed display layer, one side.
2, display panel as claimed in claim 1, wherein said first printed display layer is first printed panel, described first printed panel includes translucent base and is formed on described suprabasil first printing zone.
3, display panel as claimed in claim 1, wherein said second printed display layer is second printed panel, described second printed panel includes translucent base and is formed on described suprabasil second printing zone.
4, display panel as claimed in claim 1, wherein said first printed display layer is first printed panel, described first printed panel includes translucent base and is formed on described suprabasil first printing zone;
Wherein said second printed display layer is second printed panel, and described second printed panel includes translucent base and is formed on described suprabasil second printing zone;
Wherein said transparent material layer has first through hole;
Wherein said second printed panel has second through hole that communicates with described first through hole; And
Wherein said first printed panel has at the single flaggy corresponding to described first via regions.
5, display panel as claimed in claim 4, wherein handle through relief in the zone of the single flaggy in described first plate.
6, display panel as claimed in claim 2, at least a portion of wherein said first printing zone is handled with the dielectric printing with light diffusion property.
7, display panel as claimed in claim 3, at least a portion of wherein said second printing zone is handled with the dielectric printing with light diffusion property.
8, display panel as claimed in claim 2, the bonding part that wherein is used for fixing described display panel is formed on the periphery of described transparent material layer; And
First printing zone of wherein said first printed panel has zone of opacity, and described zone of opacity is arranged corresponding to described bonding part.
9, display panel as claimed in claim 1, wherein said first printed display layer is first printed panel, described first printed panel includes translucent base and is formed on described suprabasil first printing zone;
Wherein second printed display layer is second printed panel, and described second printed panel includes translucent base and is formed on described suprabasil second printing zone; And
Wherein be formed with sweep at least a portion at described transparent material layer edge, extend to the side end surface of described transparent material layer from the surface of described transparent material layer the end of at least one in first printed panel described in the described sweep and described second printed panel.
10, display panel as claimed in claim 1, wherein said first printed display layer is first printed panel, described first printed panel includes translucent base and is formed on described suprabasil first printing zone;
Wherein said second printed display layer is second printed panel, and described second printed panel includes translucent base and is formed on described suprabasil second printing zone;
Wherein provide floor portion in the periphery of described transparent material layer so that it is side-prominent to described second printed panel;
The surface of wherein said floor portion is connected to the surface of described transparent material layer; With
Wherein at least at the surperficial sweep that forms of described floor portion, extend to the side end surface of described transparent material layer from the surface of described transparent material layer the end of at least one in first printed panel described in the described sweep and second printed panel.
11, display panel as claimed in claim 1, wherein said first printed display layer is first printed panel, described first printed panel includes translucent substrate and is formed on described suprabasil first printing zone;
Wherein said second printed display layer is second printed panel, and described second printed panel includes translucent base and is formed on described suprabasil second printing zone;
Wherein on described transparent material layer, provide projection;
Wherein forming opening portion in described first printed panel and second printed panel at least one makes and appears described projection from described opening portion; With
Wherein form sweep in the periphery of the projection of described transparent material layer, extend along the side surface of described transparent material layer projection the end of the opening portion periphery of at least one in first printed panel described in the described sweep and second printed panel.
12, a kind of control type display panel comprises:
Display panel according to claim 4 to 11;
Be arranged in the switch press parts in described first through hole and second through hole; With
Carry out the switch element of switching manipulation by receiving an operation, in described operation, pass through the single flaggy push switch pressing component of described first printed panel.
13, control type display panel as claimed in claim 12, first printing zone of wherein said first printed panel has zone of opacity.
14, a kind of control type display panel comprises:
According to the display panel of claim 6 to 11 and
Be arranged in the light source of second printed panel, one side of described display panel,
Wherein on described second printed panel, form described second printing zone with irradiation position corresponding to described light source; With
Wherein said second printed panel comprises the zone with the media processes with light diffusion property.
15, a kind of produced by insert molding method comprises:
The lower mould that provides upper die and relative described upper die to arrange;
Plate member is provided, is arranged in the cavity that forms by described upper die and described lower mould; With
Resin material is ejected into the part that described plate extends out from described cavity, feasible inside formation and the integrant moulded products of described plate of filling described cavity with described resin material.
16, produced by insert molding method as claimed in claim 15 wherein is formed for spraying the cast gate of described resin material above the extension of described plate.
17, produced by insert molding method as claimed in claim 15 also comprises cutting process, is used for the part that cutting belt has the described moulded products of described extension.
18, produced by insert molding method as claimed in claim 16, the width of wherein said plate extension is greater than the diameter of described cast gate.
19, produced by insert molding method as claimed in claim 18 is wherein being observed from the direction of described cast gate sprayed resin parts, and cast gate is arranged in the central authorities of extension basically.
20, produced by insert molding method as claimed in claim 15, wherein said plate is arranged in the both sides at described cavity.
21, produced by insert molding method as claimed in claim 15, wherein said moulded products are the control type panels with switch element.
CN 200510067772 2004-02-17 2005-02-17 Display panel, control display panel and method for integrally molding insert material Active CN1722155B (en)

Applications Claiming Priority (4)

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JP2004039446A JP4938223B2 (en) 2004-02-17 2004-02-17 Display panel and control display panel
JP039446/04 2004-02-17
JP2004143224A JP4429799B2 (en) 2004-05-13 2004-05-13 Insert molding method
JP143224/04 2004-05-13

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