CN101308286A - Backlight module group and reflective cover manufacture method and mould for manufacturing thermoplastic reflective cover - Google Patents
Backlight module group and reflective cover manufacture method and mould for manufacturing thermoplastic reflective cover Download PDFInfo
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- CN101308286A CN101308286A CNA2008101280004A CN200810128000A CN101308286A CN 101308286 A CN101308286 A CN 101308286A CN A2008101280004 A CNA2008101280004 A CN A2008101280004A CN 200810128000 A CN200810128000 A CN 200810128000A CN 101308286 A CN101308286 A CN 101308286A
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Abstract
The invention relates to a manufacturing method for a reflecting cover of a backlight module, and a die for making a thermoplastic reflecting cover. The backlight module adopts a reflecting cover made of thermoplastic reflecting materials and can solve the problem that parasitic capacitance can be easily generated between the reflecting cover of the traditional backlight module and a lamp tube to result in the decrease of the service life of the lamp tube. The manufacturing method for the reflecting cover comprises the following steps: firstly, a die is provided, then a thermoplastic reflecting film is positioned inside the die; a hot molding step is taken so as to enable the thermoplastic reflecting film to be molded into a reflecting cover; wherein, the reflecting film is heated by the die or a heating device and is then softened and molded. The temperature needed in the heating and molding step is lower than the softening temperature of the thermoplastic reflecting film. The die for making a thermoplastic reflecting cover can produce reflecting covers without using metal substrate.
Description
Technical field
The invention relates to a kind of module backlight, and particularly relevant for the manufacture method of a kind of backlight liquid crystal display module, reflex housing and in order to make the mould of thermoplastic reflective cover.
Background technology
Along with industry is flourishing day by day, digitization tools such as mobile phone (mobile phone), digital camera (digital camera), digital code camera (digital video camera), notebook computer (notebook) and desktop computer computer develop towards direction more convenient, multi-functional and attractive in appearance invariably.When using these information products, display screen is indispensable man-machine communication interface, and the operation that the display screen by the said goods will can be the user brings more facility.LCD has become the main flow of display screen.Yet, because the display panels of LCD itself can't be luminous, thus below display panels, must provide module backlight so that light source to be provided, and then reach the function of demonstration.
Generally speaking, module backlight can be divided into down straight aphototropism mode set and edge incident type module backlight.For edge incident type module backlight, usually can be at the arranged outside reflex housing of light source, to improve the utilization factor of light source.And traditional reflex housing all is to attach a slice white reflection sheet or plate one deck reflecting material and make on metal base.But, produce stray capacitance between the metal base of reflex housing and the fluorescent tube, cause the lamp current inequality, make lamp tube service life reduce.
Summary of the invention
The objective of the invention is to propose a kind of module backlight, it can solve the problem that is easy to generate stray capacitance between reflex housing meeting in the traditional backlight module and the fluorescent tube and causes lamp tube service life to reduce.
Another object of the present invention is the manufacture method that proposes a kind of reflex housing, and it can not need use metal base.
A further object of the present invention is to propose a kind of mould in order to the making thermoplastic reflective cover, and it can produce the reflex housing that need not use metal base.
Module backlight provided by the invention comprises a light guide plate, at least one light source and at least one reflex housing.Light source is arranged on one of them side of light guide plate.Reflex housing covers on the outside of light source so that the light directive light guide plate of light source, and wherein the material of reflex housing comprises a thermoplasticity reflecting material.
According to one embodiment of the invention, above-mentioned thermoplasticity reflecting material comprises that expanded material, non-foam material or surface coverage have the high molecular polymer of reflecting material.
According to one embodiment of the invention, the thickness of above-mentioned reflex housing is 0.3mm～1mm.
According to one embodiment of the invention, above-mentioned reflex housing is U font, ㄇ font, tool salient point form, tool PSX form or tool PDX form.
According to one embodiment of the invention, module backlight more comprises at least one blooming, and it is arranged on the light guide plate.
The manufacture method of the reflex housing that the present invention provides in addition.The method at first provides a mould.Then a thermoplasticity reflectance coating is positioned in the mould.Carry out a hot molding step afterwards, so that the thermoplasticity reflectance coating is shaped to a reflex housing, the temperature that wherein heats molded step is the softening temperature that is lower than the thermoplasticity reflectance coating.Carry out a demoulding step at last.
According to one embodiment of the invention, above-mentioned mould comprises a top die and a bed die, and the thermoplasticity reflectance coating is placed between top die and the bed die.Then with mold and bed die pressing, so that the moulding of thermoplasticity reflectance coating, wherein bed die is heated condition in the pressing process.Then, the thermoplasticity reflectance coating is carried out just carrying out the demoulding step after the cooling step.
According to one embodiment of the invention, before carrying out pressing, more be included in and move into a heating arrangement between mold and the thermoplasticity reflectance coating, to carry out a heating steps.Shift out heating arrangement afterwards.
According to one embodiment of the invention, above-mentioned cooling step is by making mold remain on the room temperature temperature constant state, so that the cooling of thermoplasticity reflectance coating.
According to one embodiment of the invention, above-mentioned mould comprises a bed die and a plunger, bed die has a recessed portion, and the thermoplasticity reflectance coating is to be positioned over after the bed die top by plunger the thermoplasticity reflectance coating is pressed into the recessed portion of bed die, and wherein bed die is heated condition in process of press in.Then bed die is carried out a cooling step, and shift out plunger simultaneously.
According to one embodiment of the invention, with the thermoplasticity reflectance coating be pressed into more comprise before the recessed portion of bed die move into a heating arrangement directly over the thermoplasticity reflectance coating to carry out a heating steps.Then, shift out heating arrangement.
According to one embodiment of the invention, above-mentioned bed die more comprises and is equiped with an air extractor, more comprises in the recessed portion that the thermoplasticity reflectance coating is pressed into bed die bed die is carried out a pump step so that the thermoplasticity reflectance coating is inhaled into recessed portion.
According to one embodiment of the invention, above-mentioned mould has a recessed portion, and mould carries out a pump step by air extractor to mould after being equiped with an air extractor, so that the thermoplasticity reflectance coating attaches thereon along die surface, wherein mould is heated condition in pump step.Afterwards, mould is carried out a cooling step.
According to one embodiment of the invention, above-mentioned demoulding step comprises carries out an air compression step to mould.
According to one embodiment of the invention, before carrying out pump step, more comprise move into a heating arrangement directly over the thermoplasticity reflectance coating to carry out a heating steps.Then, shift out heating arrangement.
According to one embodiment of the invention, above-mentioned mould has a mold and a bed die, and bed die has a recessed portion, and the thermoplasticity reflectance coating is placed between top die and the bed die.With mold and bed die pressing, wherein bed die is heated condition in the pressing process afterwards.Carry out air compression afterwards and bleed treatment step, so that the moulding of thermoplasticity reflectance coating.
According to one embodiment of the invention, before carrying out the pressing step, more be included in and move into a heating arrangement between mold and the thermoplasticity reflectance coating, to carry out a heating steps.
According to one embodiment of the invention, above-mentioned mold and bed die are equiped with air compression and air extractor respectively.
The present invention proposes a kind of in order to make the mould of thermoplastic reflective cover in addition, and it comprises a mold and a bed die.Be equiped with a cooling device in the mold, and the temperature of cooling device is to maintain 15 to 25 degree Celsius.Be equiped with a heating arrangement in the bed die, the heating-up temperature of heating arrangement is below the softening temperature of thermoplastic reflective cover.
According to one embodiment of the invention, above-mentioned cooling device is a water circulation cooling device.
In sum, the material of reflex housing comprises the thermoplasticity reflecting material among the present invention, and it need not use metal base.Therefore, when reflex housing being applied in the module backlight, very little of stray capacitance between light source and the reflex housing, even there is not a stray capacitance, thereby can so that the life-span of fluorescent tube can not reduce because of the existence of stray capacitance, and can be so that the luminous mass of fluorescent tube can not be subjected to the influence of stray capacitance yet.
In addition because reflex housing with and manufacture method in need not use metal base, therefore also can save the expense of metal base, and then reduce the cost of reflex housing.
In addition, the method for manufacturing reflex housing proposed by the invention is to utilize molded mode to make, thereby more simplifies compared to the traditional reflective cover need be pasted the manufacture method of white reflection sheet in addition.
Description of drawings
Fig. 1 is the schematic side view of module backlight according to an embodiment of the invention;
Fig. 2 A～Fig. 2 F is the side view of the reflex housing of several embodiment according to the present invention;
Fig. 3 A～Fig. 3 D is the manufacturing process synoptic diagram of a kind of reflex housing according to an embodiment of the invention;
Fig. 4 A～Fig. 4 D is the manufacturing process synoptic diagram of a kind of reflex housing according to another embodiment of the present invention;
Fig. 5 A～Fig. 5 C is the manufacturing process synoptic diagram of a kind of reflex housing according to another embodiment of the present invention;
Fig. 6 A～Fig. 6 C is the manufacturing process synoptic diagram of a kind of reflex housing according to another embodiment of the present invention.
The main element label declaration
110: light source
120: light guide plate
130: reflex housing
140: blooming
102: end reflector plate
302,402,502,602: mould
302a, 402a: mold
302b, 402b, 602b: bed die
304,404,504,604: the thermoplasticity reflectance coating
304a, 404a, 504a, 604a: reflex housing
306,406,506,606: heating arrangement
403,503,603: recessed portion
405a, 405b, 505,605: the air compression or the treating apparatus of bleeding
410a, 410b, 414,508,510,608,610: the air compression or the processing of bleeding
602a: plunger
Embodiment
For above-mentioned feature and advantage of the present invention can be become apparent, embodiment cited below particularly, and conjunction with figs. are described in detail below.
Module backlight
Fig. 1 is a module backlight according to an embodiment of the invention.Please refer to Fig. 1, module backlight comprises a light guide plate 120, at least one light source 110 and at least one reflex housing 130.According to a preferred embodiment of the present invention, above-mentioned module backlight more comprises an end reflector plate 102 and at least one blooming 140.End reflector plate 102 is attached at the bottom surface of light guide plate 120, and blooming 140 is arranged on the top of light guide plate 120.
In one embodiment, the material of reflex housing 130 comprises the thermoplasticity reflecting material, for example is the high molecular polymer that expanded material, non-foam material or surface coverage have reflecting material.Its inside holes of expanded material can be for the usefulness of reflection.Non-foam material is made of multilayer high and low refractive index material stacks.In addition, the reflex housing material can be polyethylene terephthalate (Polyethylene terephthalate; PET), aromatic polyester (Aromatic polyester), polycarbonate (Polycarbonate; PC), aliphatic polyester (Aliphaticpolyester), polymethylmethacrylate (Polymethyl methacrylate; PMMA), tygon (Polyethylene; High molecular polymer such as PE).Above-mentioned material can be softened after heating, so that can carry out moulding and form any shape it.For example, above-mentioned thermoplasticity reflecting material can be made the thermoplasticity reflectance coating with the method for routine, be used for moulding thermoplastic reflective cover of the present invention.
In addition, according to one embodiment of the invention, the thickness of reflex housing 130 is 0.3mm～1mm.Because the thickness of reflex housing 130 is enough thick, thereby it has enough physical strengths, and does not need the support of metal base.And because reflex housing 130 does not need metal base, so very low of the stray capacitance between reflex housing 130 and the light source 110, even can not produce stray capacitance.Thus, the electric current of light source 110 increases with regard to not making resistance because of the existence of stray capacitance, causes 110 life-spans of light source to be reduced.
In addition, the external form of relevant reflex housing 130, the invention is not restricted to the shape of the reflex housing that Fig. 1 illustrates, it can also be other shape, for example is U font reflex housing, the ㄇ font reflex housing shown in Fig. 2 B, the tool salient point form reflex housing shown in Fig. 2 C, the tool PSX form reflex housing shown in Fig. 2 D or the tool PDX form reflex housing shown in Fig. 2 E and Fig. 2 F shown in Fig. 2 A.
And above-mentioned reflex housing 130 can be made by multiple manufacturing course, is described in detail as follows.
The manufacture method of reflex housing
First embodiment
Fig. 3 A to Fig. 3 D utilizes hot pressing formation process to make the schematic flow sheet of reflex housing according to an embodiment of the invention.Please refer to Fig. 3 A, a mould 302 at first is provided, wherein mould 302 comprises a top die 302a and a bed die 302b, and thermoplasticity reflectance coating 304 is placed between top die 302a and the bed die 302b.In the present embodiment, the thickness of thermoplasticity reflectance coating 304 is 0.3mm～1mm.
In one embodiment, a heating arrangement 306 can be moved into, to carry out a heating steps between mold 302a and thermoplasticity reflectance coating 304.Above-mentioned heating arrangement 306 comprises infrared heater or other known well heater commonly used.The heating-up temperature of above-mentioned heating steps is the softening temperature that is lower than the thermoplasticity reflectance coating.Afterwards, please refer to Fig. 3 B, shift out heating arrangement 306, just heating arrangement 306 is shifted out outside the mould 302.
Yet, in another embodiment, can save this heating steps, just do not use this heating arrangement 306.
Then, please refer to Fig. 3 C, with mold 302a and bed die 302b pressing, so that thermoplasticity reflectance coating 304 moulding and form reflex housing 304a with given shape.Particularly, bed die 302b is a heated condition in the pressing process, and mold 302a is the condition that remains on room temperature.And the temperature that heats in the above-mentioned pressing process is the softening temperature that is lower than the thermoplasticity reflectance coating.Is example with PET as the high molecular polymer of thermoplasticity reflectance coating, and its softening temperature is about about 160 degree Celsius, and the temperature that is adopted when it is heated for example is about 140 degree Celsius.
Then, thermoplasticity reflectance coating (being reflex housing 304a) is carried out a cooling step.In one embodiment, above-mentioned cooling step is by making mold 302a remain on the room temperature temperature constant state, so that thermoplasticity reflectance coating (being reflex housing 304a) cooling.
Afterwards, please refer to Fig. 3 D, carry out the demoulding step, can take out reflex housing 304a.
Employed in the present embodiment mould is shown in Fig. 3 D, and it comprises a mold 302a and a bed die 302b.Be equiped with a cooling device in the mold 302a, and the temperature of cooling device is to maintain 15 to 25 degree Celsius.According to one embodiment of the invention, the above-mentioned cooling device that is installed in the mold 302a for example is a water circulation cooling device.In other words, utilize water circulation way to make mold 302a remain on the temperature conditions of 15 to 25 degree Celsius.In addition, be equiped with a heating arrangement in the bed die 302b, and the heating-up temperature of heating arrangement is below the softening temperature of thermoplastic reflective cover.According to one embodiment of the invention, the heating arrangement that is installed in the bed die 302b can be coil heats device or other known suitable heating arrangement.
Second embodiment
Fig. 4 A to Fig. 4 D utilizes the thermovacuum method of forming to make the schematic flow sheet of reflex housing according to an embodiment of the invention.Please refer to Fig. 4 A, a mould 402 at first is provided, wherein mould 402 has a mold 402a and a bed die 402b, and bed die 402b has a recessed portion 403.According to one embodiment of the invention, mold 402a comprises that more being equiped with an air compresses and air extractor 405a, and bed die 402b also is equiped with air compression and air extractor 405b.
Afterwards, thermoplasticity reflectance coating 404 is placed between top die 402a and the bed die 402b.In the present embodiment, the thickness of thermoplasticity reflectance coating 404 is 0.3mm～1mm.
In one embodiment, a heating arrangement 406 can be moved into, to carry out a heating steps between mold 402a and thermoplasticity reflectance coating 404.Above-mentioned heating arrangement 406 comprises infrared heater or other known well heater commonly used.Similarly, the temperature of heating steps is the softening temperature that is lower than the thermoplasticity reflectance coating.Afterwards, shift out heating arrangement 406.Yet, in another embodiment, can save this heating steps, just do not use this heating arrangement 406.
Afterwards, please refer to Fig. 4 B, with mold 402a and bed die 402b pressing.The temperature that heats in the above-mentioned pressing process is the softening temperature that is lower than the thermoplasticity reflectance coating.Is example with PET as the high molecular polymer of thermoplasticity reflectance coating, and its softening temperature is about about 160 degree Celsius, and the temperature that is adopted when it is heated for example is about 140 degree Celsius.
Then, please refer to Fig. 4 C, utilize air compression and air extractor 405b in the bed die 402b treatment step 410b that bleeds, and utilize air compression and air extractor 405a to carry out air compression step 410a in mold 402a.
Afterwards, please refer to Fig. 4 D, can carry out earlier carrying out the demoulding step again after the cooling step, so can take out reflex housing 404a.Above-mentioned cooling step for example is at bed die 402b installing cooling device.In addition, above-mentioned demoulding step can be carried out air compression step 414 in bed die 402b.
The 3rd embodiment
Fig. 5 A to Fig. 5 C utilizes the thermovacuum method of forming to make the schematic flow sheet of reflex housing according to an embodiment of the invention.Please refer to Fig. 5 A, a mould 502 at first is provided, mould 502 has a recessed portion 503, and mould 502 is equiped with air compression and air extractor 505.Then, thermoplasticity reflectance coating 504 is placed on mould 502 tops.In the present embodiment, the thickness of thermoplasticity reflectance coating 504 is 0.3mm～1mm.
In one embodiment, a heating arrangement 506 can be moved to thermoplasticity reflectance coating 504 directly over to carry out a heating steps.Above-mentioned heating arrangement 506 comprises infrared heater or other known well heater commonly used.Similarly, the temperature of heating steps is the softening temperature that is lower than the thermoplasticity reflectance coating.Afterwards, shift out heating arrangement 506 again.Yet, in another embodiment, can save this heating steps, just do not use this heating arrangement 506.
Please refer to Fig. 5 B, carry out a pump step 508, so that thermoplasticity reflectance coating 504 attaches thereon along mould 502 surface, so that thermoplasticity reflectance coating 504 is molded into the reflex housing 504a with given shape by 505 pairs of moulds of air extractor 502.Particularly, in this pump step 508, mould 502 is a heated condition.Similarly, the heating-up temperature of mould 502 is the softening temperature that is lower than the thermoplasticity reflectance coating.
Then, mould 502 is carried out a cooling step.Above-mentioned cooling step is an installing cooling device in mould 502, by making mould 502 remain on the room temperature temperature constant state, so that thermoplasticity reflectance coating (being reflex housing 504a) cooling.
Afterwards, please refer to Fig. 5 C, carry out the demoulding step, can take out reflex housing 504a.According to one embodiment of the invention, above-mentioned demoulding step comprises carries out an air compression step 510 to mould 502.
The 4th embodiment
Fig. 6 A to Fig. 6 C utilizes hot pressing formation process to make the schematic flow sheet of reflex housing according to an embodiment of the invention.At first, please refer to Fig. 6 A, a mould 602 at first is provided, wherein mould 602 comprises a bed die 602b and a plunger 602a, and bed die 602b has a recessed portion 603, and thermoplasticity reflectance coating 604 is to be positioned over bed die 602b top.In the present embodiment, the thickness of thermoplasticity reflectance coating 604 is 0.3mm～1mm.
In one embodiment, can move into a heating arrangement 606 directly over thermoplasticity reflectance coating 604 to carry out a heating steps.Above-mentioned heating arrangement 606 comprises infrared heater or other known well heater commonly used.Similarly, the temperature of heating steps is the softening temperature that is lower than the thermoplasticity reflectance coating.Shift out heating arrangement 606 afterwards.Yet, in another embodiment, can save this heating steps, just do not use this heating arrangement 606.
Then, please refer to Fig. 6 B, by plunger 602a thermoplasticity reflectance coating 604 is pressed into the recessed portion 603 of bed die 602b, so that thermoplasticity reflectance coating 604 is molded into the reflex housing 604a with given shape.In one embodiment, thermoplasticity reflectance coating 604 is pressed in the process of recessed portion 603 of bed die 602b, bed die 602b is a heated condition, and the heating-up temperature of bed die 602b is the softening temperature that is lower than the thermoplasticity reflectance coating.In addition, according to one embodiment of the invention, bed die 602b comprises that more being equiped with an air compresses and air extractor 605, in the recessed portion 603 that thermoplasticity reflectance coating 604 is pressed into bed die 602b, more comprise bed die 602b is carried out a pump step 608, be inhaled into recessed portion 603 to strengthen thermoplasticity reflectance coating 604.
Then, please refer to Fig. 6 C, bed die 602b is carried out a cooling step, and shift out plunger 602a simultaneously.Above-mentioned cooling step for example is to install cooling device in bed die 602b, by making bed die 602b remain on the room temperature temperature constant state, so that thermoplasticity reflectance coating (being reflex housing 604a) cooling.At last, just carry out demoulding, can take out reflex housing 604a.Particularly, above-mentioned demoulding step more comprises utilizes 605 couples of bed die 602b of air compression plant to carry out the air compression, is beneficial to the carrying out of demoulding step.
Reflex housing of the present invention is made of the thermoplasticity reflecting material, and it need not use metal base.When therefore above-mentioned reflex housing being installed in the light source outside of module backlight, reduced the stray capacitance between reflex housing and the fluorescent tube.And, because need not use metal base, therefore also can reduce manufacturing cost.
Though the present invention discloses as above with embodiment; right its is not in order to limit the present invention; any person of an ordinary skill in the technical field; in not breaking away from design of the present invention and scope; when can doing a little change and retouching, so protection scope of the present invention is as the criterion when looking claims with defining.Arbitrary technical scheme of putting down in writing in arbitrary embodiment of the present invention in addition or the claims needn't be reached the disclosed whole purposes of the present invention or all advantage or all characteristics.In addition, summary part and title only are the usefulness that is used for assisting the patent document search, are not to be used for limiting interest field of the present invention.
Claims (21)
1. a module backlight is characterized in that, this module backlight comprises:
One light guide plate;
At least one light source is arranged on one of them side of this light guide plate; And
At least one reflex housing, the outside that covers on this light source is so that this light guide plate of light directive of this light source, and wherein the material of this reflex housing comprises a thermoplasticity reflecting material.
2. module backlight as claimed in claim 1 is characterized in that, this thermoplasticity reflecting material comprises that expanded material, non-foam material or surface coverage have the high molecular polymer of reflecting material.
3. module backlight as claimed in claim 1 is characterized in that, the thickness of this reflex housing is 0.3mm～1mm.
4. module backlight as claimed in claim 1 is characterized in that, this reflex housing is U font, ㄇ font, tool salient point form, tool PSX form or tool PDX form.
5. module backlight as claimed in claim 1 is characterized in that, this module backlight more comprises at least one blooming, is arranged on this light guide plate.
6. the manufacture method of a reflex housing is characterized in that, the manufacture method of this reflex housing comprises:
One mould is provided;
One thermoplasticity reflectance coating is positioned in this mould;
Carry out a hot molding step, so that this thermoplasticity reflectance coating is shaped to a reflex housing, wherein the temperature of the molded step of this heating is the softening temperature that is lower than this thermoplasticity reflectance coating; And
Carry out a demoulding step.
7. the manufacture method of reflex housing as claimed in claim 6 is characterized in that, this thermoplasticity reflectance coating thickness is 0.3mm～1mm.
8. the manufacture method of reflex housing as claimed in claim 6 is characterized in that, this mould comprises a top die and a bed die, and this thermoplasticity reflectance coating is placed between this top die and this bed die, and this step comprises:
With this mold and this bed die pressing, so that this thermoplasticity reflectance coating moulding, wherein this bed die is heated condition in the pressing process; And
This thermoplasticity reflectance coating is carried out just carrying out this demoulding step after the cooling step.
9. the manufacture method of reflex housing as claimed in claim 8 is characterized in that, before carrying out pressing, more is included in and moves into a heating arrangement between this mold and this thermoplasticity reflectance coating, to carry out a heating steps; And
Shift out this heating arrangement.
10. the manufacture method of reflex housing as claimed in claim 8 is characterized in that, this cooling step is by making this mold remain on the room temperature temperature constant state, so that this thermoplasticity reflectance coating cooling.
11. the manufacture method of reflex housing as claimed in claim 6 is characterized in that, this mould comprises a bed die and a plunger, and this bed die has a recessed portion, and this thermoplasticity reflectance coating is to be positioned over this bed die top, and this hot molding step comprises:
This thermoplasticity reflectance coating is pressed into this recessed portion of this bed die, wherein this bed die is heated condition in process of press in by this plunger; And
This bed die is carried out a cooling step, and shift out this plunger simultaneously.
12. the manufacture method of reflex housing as claimed in claim 11 is characterized in that, this recessed portion that this thermoplasticity reflectance coating is pressed into this bed die more comprises that immigration one heating arrangement is directly over this thermoplasticity reflectance coating, to carry out a heating steps before; And
Shift out this heating arrangement.
13. the manufacture method of reflex housing as claimed in claim 11, it is characterized in that, this bed die more comprises and is equiped with an air extractor, more comprises in this recessed portion that this thermoplasticity reflectance coating is pressed into this bed die this bed die is carried out a pump step so that this thermoplasticity reflectance coating is inhaled into this recessed portion.
14. the manufacture method of reflex housing as claimed in claim 6 is characterized in that, this mould has a recessed portion, and this mould is equiped with an air extractor, and this hot molding step comprises:
By this air extractor this mould is carried out a pump step, so that this thermoplasticity reflectance coating attaches thereon along this die surface, wherein this mould is heated condition in pump step; And
This mould is carried out a cooling step.
15. the manufacture method of reflex housing as claimed in claim 14 is characterized in that, carries out before this pump step, more comprises moving into a heating arrangement directly over this thermoplasticity reflectance coating, to carry out a heating steps; And
Shift out this heating arrangement.
16. the manufacture method of reflex housing as claimed in claim 14 is characterized in that, this demoulding step comprises carries out an air compression step to this mould.
17. the manufacture method of reflex housing as claimed in claim 6, it is characterized in that this mould has a mold and a bed die, this bed die has a recessed portion, this thermoplasticity reflectance coating is placed between this top die and this bed die, and this hot molding step comprises:
With this mold and this bed die pressing, wherein this bed die is heated condition in the pressing process; And
Carry out air compression and bleed treatment step, so that this thermoplasticity reflectance coating moulding.
18. the manufacture method of reflex housing as claimed in claim 17 is characterized in that, carries out before this pressing step, more is included in to move into a heating arrangement between this mold and this thermoplasticity reflectance coating, to carry out a heating steps; And
Shift out this heating arrangement.
19. the manufacture method of reflex housing as claimed in claim 17 is characterized in that, this mold and this bed die are equiped with air compression and air extractor respectively.
20. the mould in order to the making thermoplastic reflective cover is characterized in that, should comprise in order to the mould of making thermoplastic reflective cover:
One mold wherein is equiped with a cooling device in this mold, and the temperature of this cooling device is to maintain 15 to 25 degree Celsius; And
One bed die is equiped with a heating arrangement in this bed die, the heating-up temperature of this heating arrangement is below the softening temperature of this thermoplastic reflective cover.
21. as claimed in claim 20 in order to make the mould of thermoplastic reflective cover, it is characterized in that this cooling device is a water circulation cooling device.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101280004A CN101308286A (en) | 2008-07-09 | 2008-07-09 | Backlight module group and reflective cover manufacture method and mould for manufacturing thermoplastic reflective cover |
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|---|---|---|---|
| CNA2008101280004A CN101308286A (en) | 2008-07-09 | 2008-07-09 | Backlight module group and reflective cover manufacture method and mould for manufacturing thermoplastic reflective cover |
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- 2008-07-09 CN CNA2008101280004A patent/CN101308286A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101844399B (en) * | 2008-11-05 | 2014-02-19 | 古河电气工业株式会社 | Metal mold for bending thermoplastic resin sheet, method of bending and article formed by bending |
| CN101699151A (en) * | 2009-11-23 | 2010-04-28 | 友达光电股份有限公司 | Light source reflector and manufacturing method thereof |
| CN102086992B (en) * | 2009-12-04 | 2015-06-03 | 群创光电股份有限公司 | Backlight module and application thereof |
| CN102933891A (en) * | 2010-03-17 | 2013-02-13 | 三菱丽阳株式会社 | Surface light source device, light guide element used for surface light source device, and method for producing light guide element |
| CN102933891B (en) * | 2010-03-17 | 2015-07-15 | 三菱丽阳株式会社 | Surface light source device, light guide element used for surface light source device, and method for producing light guide element |
| CN102514040A (en) * | 2011-12-13 | 2012-06-27 | 深圳华瀚新能源材料有限公司 | Method for forming lamp PET (Polyethylene Terephthalate) reflection part |
| CN102514040B (en) * | 2011-12-13 | 2015-03-04 | 深圳华瀚新能源材料有限公司 | Method for forming lamp PET (Polyethylene Terephthalate) reflection part |
| WO2019024023A1 (en) * | 2017-08-02 | 2019-02-07 | 深圳市千岸科技有限公司 | Processing method for high-reflectivity reflection cover, and high-reflectivity lamp |
| CN112577019A (en) * | 2021-01-02 | 2021-03-30 | 赛尔富电子有限公司 | Diffusion strip-shaped lampshade, strip-shaped lamp and lampshade manufacturing method |
| CN114135838A (en) * | 2021-07-08 | 2022-03-04 | 赛尔富电子有限公司 | Linear light source lampshade and manufacturing method thereof |
| CN114770904A (en) * | 2022-06-17 | 2022-07-22 | 宁波长阳科技股份有限公司 | Porous reflecting part forming equipment and porous reflecting part |
| CN114770904B (en) * | 2022-06-17 | 2022-09-13 | 宁波长阳科技股份有限公司 | Porous reflection part forming equipment and porous reflection part |
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