CN100388083C - Method for manufacturing rubber frame and light plate of backlight module by two-material ejection - Google Patents
Method for manufacturing rubber frame and light plate of backlight module by two-material ejection Download PDFInfo
- Publication number
- CN100388083C CN100388083C CNB2005101192781A CN200510119278A CN100388083C CN 100388083 C CN100388083 C CN 100388083C CN B2005101192781 A CNB2005101192781 A CN B2005101192781A CN 200510119278 A CN200510119278 A CN 200510119278A CN 100388083 C CN100388083 C CN 100388083C
- Authority
- CN
- China
- Prior art keywords
- guide plate
- light guide
- plastics
- light
- glue
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Planar Illumination Modules (AREA)
Abstract
The present invention relates to a method for manufacturing a rubber frame and a light guide plate for a backlight module through double material ejection. The method comprises the following steps that the preset number of the light sources of a backlight module is determined; a first plastic rubber inlet point of a light guide plate or a second plastic rubber inlet point of a light guide plate is selected according to the preset number of the light sources, the first plastic rubber inlet point of a light guide plate is adjacent to the preset position of the light source, and the second plastic rubber inlet point of a light guide plate is far away from the preset position of the light source; a rubber frame and the light guide plate are integrally formed through double material ejection.
Description
Technical field
The present invention relates to a kind of extra quality ejaculation and make the method for glue frame and light guide plate, particularly relate to and a kind ofly be used for the glue frame of backlight liquid crystal display module and the method for light guide plate with extra quality ejaculation manufacturing one.
Background technology
Backlight module (Back light module) is panel of LCD (Liquid crystal displaypanel, LCD panel) one of crucial zero element, because liquid crystal itself is not luminous, the function of backlight module promptly is well-off brightness and the light source that is evenly distributed, see through the area source that succinct effectively optical mechanism changes into high brightness and homogeneous briliancy, so that the panel of LCD back light to be provided.Panel of LCD now has been widely used in the electronic product of tool growth potentiality such as monitor, mobile computer, digital camera and projector, especially with large scales such as mobile computer and LCD monitor panel demand maximum, also therefore grow up also strong day by day for the backlight module demand.
It is mainly assembled backlight module by elements such as light emitting source (for example cold cathode fluorescent tube, thermic cathode fluorimetric pipe, light emitting diode), reflecting plate (Reflector), light guide plate (Light guide plate), diffusion sheet (Diffusion sheet), prismatic lens (Brightness Enhancement Film) and housings.After the light that light emitting source penetrates enters light guide plate, can guide the light source of injecting it is scattered in uniform surface light source, the reflecting plate that is arranged in light guide plate one side can prevent that light source from leaking outside with the light reflected back light guide plate of directive reflecting plate direction, to increase the service efficiency of light.The light that is penetrated by light guide plate through the light harvesting effect of equal light action and the prismatic lens of diffusion sheet, after the brightness and uniformity coefficient of raising light source, launches light in the liquid crystal panel more again.Housing then is used for coating above-mentioned part, and required rigidity is provided, and can be protected from the pollution of external environment, and wherein housing can be glue frame or metal frame.Generally for the demand in some design, or save manufacturing cost, can with light guide plate and glue frame together with the mode of plastics ejection formation one-body molded it.
General plastics ejection formation is divided into two kinds, a kind ofly is referred to as pure ejection formation, and another kind is referred to as double-material jet formation.The thin material jetting formation process promptly injects a molding cave to form desired object via nozzle with unitary plastic by single material pipe.Since its technology characteristics have product molding easily, can produce in a large number, reduce production costs and can be fit to advantage such as complicated finished product moulding, be widely used in daily living article, electrical home appliances and automobile zero element, become the forming technique of the industry of plastic processing now widespread use.But since based on requirement, the environmental protection of moulding product quality precision consider, the improvement of technology and the saving of secondary processing, so in response to generation double-material jet formation technology (Co-Injection Molding).Its principle of operation of double-material jet formation technology is to add a material pipe and Improvement type nozzle at traditional ejaculator, injects two kinds of identical or different but high molecular melten gels of tool compatibility in two material pipes respectively.Penetrating process at melten gel can inject melten gel in the moulding die cavity simultaneously or with the compartment order.Easy speech, double-material jet formation technology be promptly prior to semi-finished product model ejection formation A plastic material, be transplanted on the finished product model after, ejection formation B plastic material forms last moulding product thereon again.
For backlight module manufacturer, the method that reduces cost is adopted the design of so-called integrated light guide plate nothing more than being that each component module structure is simplified.See also Fig. 1, Fig. 1 makes the glue frame of backlight module and the icon of light guide plate with extra quality ejaculation in the correlation technique.Be about to the required plastics A of glue frame 12 earlier and advance glue point 16 by two plastics to inject the moulding die cavity a certain amount of, again that light guide plate 14 is required B plastics advance glue point 18 by plastics and cooperate two plastics to advance glue point 16 with the while or penetrate the sequential control mode and penetrate, making A plastics and B plastic hot fuse lumps together, so after the die sinking, form the finished product that light guide plate 14 and glue frame 12 integrally combine.Compared with the pure ejection formation of tradition, utilize the technology of double-material jet formation, in the short comparatively speaking time, use a large amount of light guide plate 14 and the glue frames 12 that are combined as a whole of making of lower energy cost.
Because in the assembling process of LCD, light source generally all is to wait until after incorporate light guide plate and glue frame are finished to be installed again, so must reserve the fixed position earlier with as the usefulness of light source installation next when making incorporate light guide plate and glue frame.Yet extra quality ejaculation technology can because the B stream of plastic when the default hole 20 that uses to light source after cutting apart two strands of creepings of generation (its creeping direction is shown in arrow 22a, 22b), produce closing line (Weld Line) 25 again in conjunction with hot-air stops.Closing line 25 can have a strong impact on the optical quality of light guide plate 14.In order to solve the problem that closing line 25 produces, many at present employings promote the plastics temperature or the speed of plastics through hole are improved, or improve mold temperature or use the material of mobile preference ranking, or be to increase firing rate and penetrate pressure, or check the modes such as moisture of raw material.Yet in the ejection formation process, because closing line 25 is three-dimensional welding zones of a complexity, and the size of light guide plate itself and thickness relationship, so all unavoidable meeting of aforesaid way produces closing line.So how to avoid the generation of closing line fully, be a problem that urgency is to be solved.
Summary of the invention
Therefore, purpose of the present invention is used for the glue frame of backlight liquid crystal display module and the method for light guide plate for providing a kind of with extra quality ejaculation manufacturing one, can avoid the generation of closing line, to solve above-mentioned prior art problems.
The invention provides and a kind ofly make the glue frame of a backlight module and the method for light guide plate with extra quality ejaculation, it comprises the following steps:
Determine the predetermined number of the light source of a backlight module;
Advance glue point by light guide plate plastics first or light guide plate plastics second advance glue point ejaculation one second plastics to form a light guide plate according to the decision of the predetermined number of this light source, these light guide plate plastics first advance the predeterminated position of glue point neighbour in this light source, these light guide plate plastics second advance the predeterminated position of glue point away from this light source, wherein, when the predetermined number of this light source is odd number, choose these light guide plate plastics second and advance the glue point, when the predetermined number of this light source is even number, choose that these light guide plate plastics first advance glue point or this light guide plate plastics second advance the glue point; And
Integrated glue frame of extra quality ejaculation and light guide plate.
The present invention also provides a kind of integrated manufacture method of glue frame of tool light guide plate, and it can cooperate a plurality of light sources to use, and comprising:
Determine the number of these a plurality of light sources;
Number according to these a plurality of number of light sources, determine light guide plate plastics to enter the position of glue point, wherein, when these a plurality of number of light sources are odd number, these light guide plate plastics advance the opposition side that the glue point is positioned at the predeterminated position of these a plurality of light sources, when these a plurality of number of light sources are even number, these light guide plate plastics advance the glue point be positioned at the same side of predeterminated position of these a plurality of light sources or opposition side one of them; And
Carry out an extra quality ejaculation technology, to carry out the ejection formation of a light guide plate and a glue frame.
After advantage of the present invention promptly is to determine the quantity of the needed light source of backlight module, can suitably determine to penetrate the light guide plate plastics and advance the glue point, especially when the predetermined number of light source is odd number, advances the adjustment of glue point through the light guide plate plastics and can avoid light guide plate in the process of ejection formation, to produce the problem of closing line.
Description of drawings
Fig. 1 makes the glue frame of backlight module and the synoptic diagram of light guide plate with extra quality ejaculation in the prior art.
Fig. 2 is a method flow diagram of the present invention.
When Fig. 3 was odd number for the default light source of backlight module of the present invention, light guide plate was advanced glue point and is preset the synoptic diagram of light source position.
When Fig. 4 and Fig. 5 were even number for the default light source of backlight module of the present invention, light guide plate was advanced glue point and is preset the synoptic diagram of light source position.
Fig. 6 is the method flow diagram of another embodiment of the present invention.
The simple symbol explanation
12 glue frames, 14 light guide plate
16 advance glue point 18 advances the glue point
20,34 light source hole 22a, 22b creeping
25 closing lines, 30 glue frames
32 light guide plate 60,62 are advanced the glue point
80 advance the glue point
Embodiment
See also Fig. 2, Fig. 2 is a method flow diagram of the present invention.Its step is as follows:
Step 100: the predetermined number that determines the light source of a backlight module.
Step 102: provide light guide plate plastics first to advance glue point and light guide plate plastics second advance the glue point, these light guide plate plastics first advance the predeterminated position of glue point neighbour in this light source, and these light guide plate plastics second advance the predeterminated position of glue point away from this light source.
Step 104: inject one first plastics to form a glue frame.
Step 106: whether the predetermined number of judging light source is odd number, if, execution in step 108, if not, execution in step 110.
Step 108: when the predetermined number of light source is odd number, advances glue point by these light guide plate plastics second and penetrate second plastics to form this light guide plate.
Step 110: when the predetermined number of this light source is even number, advances glue point or this light guide plate plastics second by these light guide plate plastics first and advance glue point and penetrate these second plastics to form this light guide plate.
Step 112: take out integrated glue frame and light guide plate.
See also Fig. 2, Fig. 3, Fig. 4 and Fig. 5.When Fig. 3 was odd number for the default light source of backlight module of the present invention, light guide plate was advanced glue point and is preset the synoptic diagram of light source position.When Fig. 4 and Fig. 5 were even number for the default light source of backlight module of the present invention, light guide plate was advanced glue point and is preset the synoptic diagram of light source position.Before extra quality ejaculation, judge earlier to keep hole 34 numbers (step 100) of giving default light source in the mould of making glue frame and light guide plate.With Fig. 3 is example, and default light source hole 34 is 3, and the default light source hole 34 of Fig. 4 has 4.Next inject plastics C to form glue frame 30 (step 102) by advancing glue point 62.In the present embodiment, provide two different light guide plate plastics to advance the glue point, as Fig. 4 and shown in Figure 3, light guide plate plastics first advance the same side that glue point 80 is positioned at default light source hole 34, just the neighbour is in a side of default light source hole 34, and light guide plate plastics second advance the opposition side that glue point 60 is positioned at default light source hole 34, just away from a side of presetting light source hole 34.The setting that certain light guide plate plastics advance glue point 60,80 also need be considered the problem of symmetry, and general light guide plate plastics advance glue point 60,80 and all are arranged on the perpendicular bisector of presetting light source hole 34 position of arranging.Next to advance glue point 60,80 by which light guide plate plastics according to the number decision of default light source hole and penetrate light guide plate 32 desired plastics D (that commonly used is PC or PMMA).As shown in Figure 3, when default light source hole 34 numbers are odd number, just advance glue point 60 and inject plastics D by the light guide plate plastics second that are positioned at the opposition side of presetting light source hole 34.Because in the process that plastics D injects, the creeping of plastics D is not stopped there is not the generation of closing line in the prior art so can present equally distributed state by default light source hole 34.As shown in Figure 4, when default light source hole 34 numbers are even number, just advance glue point 80 and inject plastics D by the light guide plate plastics first that are positioned at the same side of presetting light source hole 34.Because light guide plate plastics first advance glue and put 80 set relative positions and do not have stopping of default light source hole 34, and the distribution of default light source hole 34 is also very even, so after plastics D injected, the phenomenon that does not have skewness took place, so also do not produce the puzzlement of closing line.Certainly, when default light source hole 34 numbers are even number, also can advance glue point 60 and inject plastics D, as shown in Figure 5 by the light guide plate plastics second of the opposition side that is positioned at default light source hole 34.This does not have the puzzlement that produces closing line yet.
At last after glue frame 30 and light guide plate 32 are one-body molded, can die sinking obtain the light guide plate (convex-concave surface that patterning is arranged is in order to leaded light) of optical design design above or below light guide plate.Or use high reflectance and the not pigment such as the TiO of extinction again
2, stamp circular or square diffusion point in light guide plate 30 bottom surfaces with screen painting, can finish making.
See also Fig. 6, Fig. 6 is the method flow diagram of another embodiment of the present invention.
Step 200: the predetermined number that determines the light source of a backlight module.
Step 202: provide light guide plate plastics first to advance glue point and light guide plate plastics second advance the glue point, these light guide plate plastics first advance the predeterminated position of glue point neighbour in this light source, and these light guide plate plastics second advance the predeterminated position of glue point away from this light source.
Step 204: whether the predetermined number of judging light source is odd number, if, execution in step 206, if not, execution in step 208.
Step 206: when the predetermined number of light source is odd number, advances glue point by these light guide plate plastics second and penetrate second plastics to form this light guide plate.
Step 208: when the predetermined number of this light source is even number, advances glue point or this light guide plate plastics second by these light guide plate plastics first and advance glue point and penetrate these second plastics to form this light guide plate.
Step 210: inject one first plastics to form a glue frame.
Step 212: take out integrated glue frame and light guide plate.
The method flow diagram that is different from Fig. 3, in the embodiment shown in fig. 6, in the process of extra quality ejaculation, the ejection formation of light guide plate (step 206 or step 208) also can be prior to the ejection formation (step 210) of plastics.
The manufacture method of above-mentioned incorporate light guide plate and glue frame can be applicable to various LCD.
Compared to prior art, the invention provides two different light guide plate plastics and advance the glue point, light guide plate plastics advance the same side that the glue point is positioned at default light source position, and another light guide plate plastics advance the opposition side that the glue point is positioned at default light source position.In technology of the present invention, once the number of default light source is when being odd number, then advance the glue point and inject plastics by the light guide plate plastics that are positioned at default light source position opposition side, thus, need not additionally adjust plastics temperature, plastics flow velocity or penetrate pressure, or improve mold temperature or use under the mode of material of mobile preference ranking, just can avoid producing in the process of existing ejection formation light guide plate the problem of closing line.
Though the present invention discloses as above with preferred embodiment; yet it is not in order to limit the present invention; those skilled in the art can do a little change and retouching without departing from the spirit and scope of the present invention, thus protection scope of the present invention should with accompanying Claim the person of being defined be as the criterion.
Claims (9)
1. make the glue frame of backlight module and the method for light guide plate with extra quality ejaculation for one kind, it comprises:
Determine the predetermined number of the light source of a backlight module;
Choose according to the predetermined number of this light source that light guide plate plastics first advance glue point or light guide plate plastics second advance the glue point, these light guide plate plastics first advance the predeterminated position of glue point neighbour in this light source, these light guide plate plastics second advance the glue point away from the predeterminated position of this light source and be positioned at the opposition side of the predeterminated position of this light source, wherein, when the predetermined number of this light source is odd number, choose these light guide plate plastics second and advance the glue point, when the predetermined number of this light source is even number, choose that these light guide plate plastics first advance glue point or this light guide plate plastics second advance the glue point; And
Integrated glue frame of extra quality ejaculation and light guide plate.
2. the method for claim 1, wherein in the step of integrated glue frame of this extra quality ejaculation and light guide plate, this light guide plate and this glue frame are at the different time ejection formation.
3. method as claimed in claim 2, wherein in the step of integrated glue frame of this extra quality ejaculation and light guide plate, the ejection formation of this glue frame is prior to the ejection formation of this light guide plate.
4. method as claimed in claim 2, wherein in the step of integrated glue frame of this extra quality ejaculation and light guide plate, the ejection formation of this light guide plate is prior to the ejection formation of this glue frame.
5. the integrated manufacture method of glue frame of a tool light guide plate, it can cooperate a plurality of light sources to use, and comprising:
Determine the number of these a plurality of light sources;
Number according to these a plurality of light sources, determine light guide plate plastics to enter the position of glue point, wherein, when these a plurality of number of light sources are odd number, these light guide plate plastics advance the opposition side that the glue point is positioned at the predeterminated position of these a plurality of light sources, when these a plurality of number of light sources are even number, these light guide plate plastics advance the glue point be positioned at the same side of predeterminated position of these a plurality of light sources or opposition side one of them; And
Carry out an extra quality ejaculation technology, to carry out the ejection formation of a light guide plate and a glue frame.
6. method as claimed in claim 5, wherein in this extra quality ejaculation technology, this light guide plate and this glue frame different time ejection formation.
7. method as claimed in claim 6, wherein in this extra quality ejaculation technology, the ejection formation of this glue frame is prior to the ejection formation of this light guide plate.
8. method as claimed in claim 6, wherein in this extra quality ejaculation technology, the ejection formation of this light guide plate is prior to the ejection formation of this glue frame.
9. method as claimed in claim 5, wherein this light guide plate has the convex-concave surface of a patterning at least.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101192781A CN100388083C (en) | 2005-11-01 | 2005-11-01 | Method for manufacturing rubber frame and light plate of backlight module by two-material ejection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101192781A CN100388083C (en) | 2005-11-01 | 2005-11-01 | Method for manufacturing rubber frame and light plate of backlight module by two-material ejection |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1758111A CN1758111A (en) | 2006-04-12 |
| CN100388083C true CN100388083C (en) | 2008-05-14 |
Family
ID=36703563
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005101192781A Expired - Fee Related CN100388083C (en) | 2005-11-01 | 2005-11-01 | Method for manufacturing rubber frame and light plate of backlight module by two-material ejection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100388083C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105487168B (en) * | 2016-02-04 | 2019-01-01 | 上海向隆电子科技有限公司 | Region goes out the manufacturing method of the light guide plate of light |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001143517A (en) * | 1999-11-12 | 2001-05-25 | Seiko Precision Inc | Panel light emitting device |
| US20030016314A1 (en) * | 2001-07-20 | 2003-01-23 | Chris Dong | Method of integrally forming light-guide and polarizer |
| JP2003053802A (en) * | 2001-08-17 | 2003-02-26 | West Electric Co Ltd | Method for manufacturing light guide, and light guide and illuminator using the same |
| CN1566998A (en) * | 2003-06-26 | 2005-01-19 | 鸿富锦精密工业（深圳）有限公司 | Light guiding board and method for preparing same |
| CN1612019A (en) * | 2003-11-01 | 2005-05-04 | 鸿富锦精密工业（深圳）有限公司 | Back light system and its manufacturing method |
-
2005
- 2005-11-01 CN CNB2005101192781A patent/CN100388083C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001143517A (en) * | 1999-11-12 | 2001-05-25 | Seiko Precision Inc | Panel light emitting device |
| US20030016314A1 (en) * | 2001-07-20 | 2003-01-23 | Chris Dong | Method of integrally forming light-guide and polarizer |
| JP2003053802A (en) * | 2001-08-17 | 2003-02-26 | West Electric Co Ltd | Method for manufacturing light guide, and light guide and illuminator using the same |
| CN1566998A (en) * | 2003-06-26 | 2005-01-19 | 鸿富锦精密工业（深圳）有限公司 | Light guiding board and method for preparing same |
| CN1612019A (en) * | 2003-11-01 | 2005-05-04 | 鸿富锦精密工业（深圳）有限公司 | Back light system and its manufacturing method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1758111A (en) | 2006-04-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7128459B2 (en) | Light-guide plate and method for manufacturing the same | |
| CN101261338B (en) | Method for making light guide board | |
| CN101458347B (en) | Prism lens, method for making same, and LCD device employing the prism lens | |
| CN102890306A (en) | Light guide plate and manufacturing method and forming mold of light guide plate | |
| JP2007220347A (en) | Variable prism light guide plate | |
| CN203433139U (en) | Backlight module group and light-guide plate thereof | |
| JP2008129585A (en) | Optical plate and its manufacturing method | |
| CN101398507A (en) | Light conducting plate for forming laser processing pattern on light incidence plane and method for producing the same | |
| CN203224639U (en) | Long-life light guide plate | |
| CN201984179U (en) | Novel light guide plate for liquid crystal display or flat LED (light-emitting diode) | |
| CN101620338A (en) | Flexible backlight module structure | |
| JP2008129579A (en) | Optical plate and its manufacturing method | |
| CN100388083C (en) | Method for manufacturing rubber frame and light plate of backlight module by two-material ejection | |
| JP2010281850A (en) | Light reflecting/diffusing apparatus and apparatus and method for manufacturing the same | |
| CN201434917Y (en) | Three-layer light guide structure | |
| CN104614801A (en) | Lateral-entrance backlight module and lateral-entrance light guide plate | |
| JP2008129588A (en) | Optical plate and its manufacturing method | |
| US20170023727A1 (en) | Edge type backlight module and display device | |
| CN102914813A (en) | Composite light guide plate and manufacturing method thereof | |
| TWI287670B (en) | Method of forming a light guide plate in conjunction with a plastic frame in co-injection molding way | |
| CN101554761B (en) | Processing method of light guide plate of hot press molding liquid crystal display backlight module illuminating system | |
| US20150138835A1 (en) | Light guide plate, method for making the same, backlight module, and display device | |
| EP2708809B1 (en) | Light guide plate, method for fabricating the same and backlight unit | |
| CN201072452Y (en) | Mold insert structure of light conducting plate and light conducting plate structure formed by the same | |
| JP2008129587A (en) | Optical plate and its manufacturing method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080514 Termination date: 20201101 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |