CN108878202A - Backlight module and its manufacturing method - Google Patents
Backlight module and its manufacturing method Download PDFInfo
- Publication number
- CN108878202A CN108878202A CN201810811191.8A CN201810811191A CN108878202A CN 108878202 A CN108878202 A CN 108878202A CN 201810811191 A CN201810811191 A CN 201810811191A CN 108878202 A CN108878202 A CN 108878202A
- Authority
- CN
- China
- Prior art keywords
- light
- barn door
- guide plate
- light guide
- keycap
- 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.)
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
- H01H13/83—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard characterised by legends, e.g. Braille, liquid crystal displays, light emitting or optical elements
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
- G02B6/0055—Reflecting element, sheet or layer
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2219/00—Legends
- H01H2219/054—Optical elements
- H01H2219/06—Reflector
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2219/00—Legends
- H01H2219/054—Optical elements
- H01H2219/062—Light conductor
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2219/00—Legends
- H01H2219/054—Optical elements
- H01H2219/064—Optical isolation of switch sites
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Planar Illumination Modules (AREA)
Abstract
It includes light guide plate and barn door that the present invention, which discloses a kind of backlight module and its manufacturing method, backlight module,.Light guide plate is located at below multiple keycaps and has diffusing structure, and diffusing structure is located at the lower section of keycap；Barn door has barn door ontology, light shielding part, multiple exposure portions, circuit and barn door light-emitting component, light shielding part and multiple exposure portions are located at barn door ontology and are located at the side that barn door ontology deviates from multiple keycaps close to the side of multiple keycaps, circuit and barn door light-emitting component；Circuit provides electric energy to barn door light-emitting component, and barn door light-emitting component emits light towards light guide plate.The present invention may be selected light source being set to barn door or reflecting plate, so that no setting is required in backlight module light source circuit board, also the light guide plate that may be selected to make backlight module is with the effect of reflecting plate, so that no setting is required in backlight module reflecting plate, therefore, backlight module of the present invention can reduce the number of components and reduce thickness, meet lightening requirement of the industry for backlight module.
Description
Technical field
The present invention is about a kind of backlight module and its manufacturing method, and in details of the words, the present invention can omit light about one kind
The backlight module and its manufacturing method of source circuit plate.
Background technique
Keyboard is that computer uses upper indispensable accessory.When the keyboard dim environment operation weaker in light intensity
When, user possibly can not see the distinguished symbol indicated on the keycap of every key on keyboard, and allow user to key
The operation of disk encounters difficulties.
Therefore, someone designs illuminated keyboard, and gradually popularizing due to illuminated keyboard then, and user is for illuminated keyboard
Functional requirement it is also more stringent.Referring to Fig. 1, Fig. 1 is the primary layer body schematic diagram of known illuminated keyboard.As shown in Figure 1, practising
The illuminated keyboard 3 known is from top to bottom comprising key group 31 and backlight module 32.Wherein, there are multiple keys 311 in key group 31,
And there is barn door 321, light guide plate 322, light source circuit board 323 and reflecting plate 324 on backlight module 32, by light guide plate 322
Leaded light it is reflective with reflecting plate 324, enable the light of light source circuit board 323 across barn door 321, and allow each key 311
On keycap 3111 be in backlighting environment, so that distinguished symbol on keycap 3111 is shone, and allow user dim
By the type of every key 311 of bright identification in environment.
But the light source circuit board 323 in backlight module 32 the technical issues of can not being reduced there are thickness, cause at present
Backlight module 32 can not effectively reduce thickness, so that illuminated keyboard is unable to satisfy industry for lightening design requirement.Therefore
How the thickness of backlight module is reduced, to make illuminated keyboard lightening, technology subject under discussion then of interest for present industry.
Summary of the invention
The purpose of the present invention is to provide a kind of backlight module and its manufacturing methods, can reduce backlight module in the prior art
Brightness so that illuminated keyboard is lightening.
In order to achieve the above object, the present invention provides a kind of backlight module, can have between multiple keycaps with multiple keycaps are illuminated
There is keycap gap, backlight module includes：Light guide plate and barn door.Light guide plate is located at below multiple keycaps, and light guide plate has multiple
Diffusing structure, multiple diffusing structures are located at the lower section of one of multiple keycaps.Barn door is located at multiple keycaps and leaded light
Between plate, barn door has barn door ontology, light shielding part, multiple exposure portions, circuit and barn door light-emitting component, light shielding part and more
A exposure portion is located at the barn door ontology and is located at the barn door sheet close to the side of multiple keycaps, circuit and barn door light-emitting component
Body deviates from the side of multiple keycaps；Wherein, circuit provides electric energy to barn door light-emitting component, and barn door light-emitting component is towards light guide plate
Emit light, light can transmit inside light guide plate, and when light advances to multiple diffusing structures, multiple diffusing structures make light
It is partially disengaged light guide plate；Wherein, light shielding part is located at below keycap gap, and shuts out the light and project via keycap gap, Duo Gelu
Light portion is located at the lower section of one of multiple keycaps, so that light is may pass through multiple exposure portions and is respectively facing multiple keycaps and passes
It passs.
As optional technical solution, which further includes reflecting plate, which is located at the light guide plate away from this
The side of barn door, the light which will be disengaged from the light guide plate reflect back into the light guide plate.
As optional technical solution, which further has light guide plate reflecting layer, which is located at
The light guide plate deviates from the side of the keycap, and the light which will be disengaged from the light guide plate reflects back into the light guide plate
It is interior.
As optional technical solution, which is made of reflectance ink, which is white oil
Ink.
It in addition, the present invention also provides a kind of backlight module, can be used for illuminating multiple keycaps, have between keycap between multiple keycaps
Gap, backlight module include：Light guide plate, barn door and reflecting plate.Light guide plate is located at below multiple keycaps, and light guide plate has multiple dissipate
Structure is penetrated, multiple diffusing structures are located at the lower section of one of multiple keycaps.Barn door is located at multiple keycaps and light guide plate
Between, barn door has barn door ontology, light shielding part and multiple exposure portions, and light shielding part and multiple exposure portions are located at barn door ontology
Close to the side of multiple keycaps.Reflecting plate is set to the side that light guide plate deviates from barn door, and reflecting plate has the luminous member of reflecting plate
Part, reflecting plate light-emitting component emit light towards light guide plate, and light can transmit inside light guide plate, when light advances to multiple scatterings
When structure, multiple diffusing structures make light portion be detached from light guide plate；Wherein, light shielding part is located at below keycap gap, and shielding light
Line is projected via keycap gap, and multiple exposure portions are located at the lower section of one of multiple keycap, may pass through light more
A exposure portion and be respectively facing the transmitting of multiple keycaps.
As optional technical solution, which is concave-convex micro-structure or scattering netted dot.
As optional technical solution, which is PET plastic body or PI plastic body.
In addition, for manufacturing the barn door in backlight module, being hidden the present invention also provides a kind of shading board fabrication method
Tabula rasa manufacturing method includes the following steps：The barn door ontology is provided；The circuit is formed in the bottom surface of the barn door ontology；It should
The top surface of barn door ontology is partitioned into lightproof area and exposure region, and in lightproof area printing black out ink to form the screening
Light portion, and the black out ink is not printed onto the exposure region, and the exposure region is made to become the exposure portion；And by SMT skill
The barn door light-emitting component is welded in the circuit by art, and completes the barn door light-emitting component being set to the barn door ontology.
In addition, the present invention also provides another shading board fabrication methods, for manufacturing the barn door in backlight module,
Shading board fabrication method includes the following steps：Barn door ontology is provided；Circuit is formed in the bottom surface of barn door ontology；By barn door
Print black out ink in the top surface of ontology；The top surface of barn door ontology is partitioned into lightproof area and exposure region, and passes through punching
Mode removes the black out ink for being printed in exposure region to form exposure portion, and forms the black out ink for being printed in lightproof area
Light shielding part；And barn door light-emitting component is welded in circuit by SMT technology, and complete for barn door light-emitting component to be set to
Barn door ontology.
As optional technical solution, this method is further comprising the steps of：The electricity is formed in the bottom surface of the barn door ontology
Before the step of road, by printing silver paste route in the bottom surface of the barn door ontology, by the silver paste route and in the shading
The mode of the underrun electroless copper of plate ontology and form the circuit.
As optional technical solution, which is black ink.
Compared to prior art, the present invention provides a variety of backlight modules that can be applied to illuminated keyboard and its manufacturing method,
It may be selected the light source of backlight module being set to barn door or reflecting plate, so that no setting is required in backlight module light source circuit board,
Also the light guide plate that may be selected to make backlight module is with the effect of reflecting plate, so that no setting is required in backlight module reflecting plate, because
This, backlight module of the present invention can reduce the quantity of component and reduce thickness, enable compliance with industry for the light of backlight module
Thinning requirement.
Below in conjunction with the drawings and specific embodiments, the present invention will be described in detail, but not as a limitation of the invention.
Detailed description of the invention
Fig. 1 is the component decomposition diagram of known illuminated keyboard；
Fig. 2 is the component decomposition diagram using the illuminated keyboard of backlight module of the present invention；
Fig. 3 is to found schematic diagram using the group of the illuminated keyboard of backlight module of the present invention；
Fig. 4 is the sectional view that AA line segment is cut off to illustrate backlight module first embodiment use state of the present invention along Fig. 3；
Fig. 5 is the sectional view that AA line segment is cut off to illustrate backlight module second embodiment use state of the present invention along Fig. 3；
Fig. 6 is the sectional view that AA line segment is cut off to illustrate backlight module 3rd embodiment use state of the present invention along Fig. 3；
Fig. 7 A to Fig. 7 D is the schematic diagram of the first executive mode of shading board fabrication method of the present invention；
Fig. 8 A to Fig. 8 E is the schematic diagram of the second executive mode of shading board fabrication method of the present invention；
Fig. 9 is the flow chart of the first shading board fabrication method of the invention；And
Figure 10 is the flow chart of second of shading board fabrication method of the invention.
Specific embodiment
The following contents will arrange in pairs or groups schema, and technology contents of the invention are illustrated by particular specific embodiment, are familiar with this skill
The personage of art can other advantages and efficacy of the present invention can be easily understood by content disclosed in the present specification.The present invention also can be by
It is implemented or is applied by other different specific embodiments.The various details in this specification can also be based on different viewpoints and answer
With, without departing from the spirit of the present invention, the various modifications of progress and change.Especially, the ratio of each element is closed in schema
System and relative position only have exemplary use, not represent the actual state that the present invention is implemented.
In addition, it should be noted that keep disclosure more succinct and be readily apparent that, it is identical or close in following embodiment
It will be illustrated using identical symbol like the element of function, and omit the description of identical or impartial feature.
The present invention is mainly to provide the manufacturing method of a variety of backlight modules applied to illuminated keyboard and its barn door, such as
This, can reduce the thickness of backlight module, and lightening requirement can be met using the illuminated keyboard of backlight module of the present invention by allowing.
First embodiment：
Please also refer to Fig. 2 to Fig. 4, wherein shown in each schema as referenced by left column, the backlight module of first embodiment
1 illuminates for providing backlight BL to multiple keycaps 2, wherein has keycap gap between multiple keycaps.The present embodiment
Backlight module 1 includes light guide plate 11, barn door 12 and reflecting plate 13.Light guide plate 11 is located at the lower section of multiple keycaps 2, provides light
Line R is totally reflected inside it, and is transmitted by one end towards the other end, and light guide plate 11 deviates from the side of multiple keycaps 2 with more
A diffusing structure 111, the multiple diffusing structure 111 is located at the lower section of one of multiple keycaps 2, for example, concave-convex micro-
Structure or scattering netted dot, and concave-convex micro-structure can be V ditch structure.In this present embodiment, diffusing structure 111 is located under keycap 2
Side can destroy total reflection of the light R in light guide plate 11 in position, and scattering light R transmits light R towards keycap 2
And become backlight BL, it is shone required light source with providing keycap 2.
Reflecting plate 13 is located at the side that light guide plate 11 deviates from barn door 12, and reflecting plate 13 can will be disengaged from the light of light guide plate 11
Reflect back into light guide plate 11, separately say it, reflecting plate 13, which can be reflected, to be transmitted towards the direction away from barn door 12 and leave light guide plate
11 light R makes light R return to the inside of light guide plate 11 and transmit towards barn door 12.
Barn door 12 is between multiple keycaps 2 and light guide plate 11.Barn door 12 has barn door ontology 121, light shielding part
1211, multiple exposure portions 1212, circuit 1213 and barn door light-emitting component 1214.Light shielding part 1211 and 1212, multiple exposure portions
It is located at barn door ontology close to the side of multiple keycaps 2, circuit 1213 and barn door light-emitting component 1214 in barn door ontology 121
121 deviate from the side of multiple keycaps.Light shielding part 1211 is located at the lower section in keycap gap, can be made of and can block black out ink
Light R projects to avoid light R via keycap gap, influences beauty to avoid there is halation around multiple 2 lower sections of keycap
Property.
Multiple exposure portions 1212 are located at the lower section of one of multiple keycaps 2, and light R is made to may pass through multiple exposure portions
1212 and be respectively facing the transmitting of multiple keycaps 2 to allow keycap 2 to shine.In this present embodiment, barn door light-emitting component 1214 is arranged
In circuit 1213, circuit 1213 provides electric energy to barn door light-emitting component 1214, and barn door light-emitting component 1214 has light-emitting surface
Close to light guide plate 11, and light R can be emitted towards light guide plate 11, light R can be transmitted inside light guide plate 11, when light R is advanced to
When multiple diffusing structures, multiple diffusing structures 111 can destroy total reflection of the light R in light guide plate 11, be detached from light R-portion
Light guide plate 11 and allow keycap 2 shine.
In conclusion the light source due to the present embodiment backlight module is set to barn door, therefore light source circuit board can be saved
Setting, and then reach the purpose for reducing backlight module thickness, and allowing can be accorded with using the illuminated keyboard of the present embodiment backlight module
Close lightening requirement.
In addition, the present invention provides the manufacture of following two barn door for the manufacture of barn door in the present embodiment backlight module 1
Method：
The first shading board fabrication method：
Referring to FIG. 9, firstly, provide the barn door ontology of for example, PET plastic body or PI plastic body in step S11,
Wherein, as shown in Figure 7 A, it may be selected to print silver paste route 1210 in the bottom surface of barn door ontology 121；Then, in step S12,
Circuit is formed in the bottom surface of barn door ontology, wherein as shown in Figure 7 B, the printing of the circuit may be selected by silver paste route,
Circuit 1213 is formed in the mode of the underrun electroless copper of barn door ontology 121；Furthermore in step S13, such as Fig. 7 C institute
Show, the top surface of barn door ontology 121 is partitioned into lightproof area 1201 and exposure region 1202, and print in lightproof area 1201
For example, the black out ink 14 of black ink is to form light shielding part 1211, and black out ink 14 is not printed onto exposure region
1202, so that exposure region 1202 is become the exposure portion 1212 that can expose light；Then, in step S14, as illustrated in fig. 7d, by
By SMT technology (i.e. Surface Mount Technology, also referred to as surface mount technology), barn door light-emitting component 1214 is welded
It is connected to circuit 1213, and completes barn door light-emitting component 1214 being set to barn door ontology 121.
Second of shading board fabrication method：
Referring to FIG. 10, wherein, shown in the schema as referenced by left column, second of shading board fabrication method and the first screening
The maximum difference of tabula rasa manufacturing method is, the light shielding part of barn door ontology and the generation type in exposure portion, specifically, second
Kind shading board fabrication method is in step S23, as shown in Figure 8 C, by the top surface printing for example, black oil of barn door ontology 121
The black out ink 14 of ink；Then, in step S24, as in fig. 8d, the top surface of barn door ontology 121 is partitioned into shading region
Domain 1201 and exposure region 1202, and exposure region 1202 is printed in by hole knockout (alternatively referred to as Punch mode) removal
Black out ink 14 to form exposure portion 1212, and the black out ink 14 for making to be printed in lightproof area 1201 forms light shielding part
1211。
Second embodiment：
Please also refer to Fig. 5, wherein shown in the schema as referenced by left column, second embodiment and first embodiment are maximum
Difference be, the diffusing structure 111 of the light guide plate 11 of second embodiment backlight module be set to light guide plate 11 close to keycap 2
The first side and be located at keycap 2 lower section, light guide plate 11 away from keycap 2 second side print reflectance ink to constitute light guide plate
Reflecting layer 112.The diffusing structure 111 destroys total reflection of the light R in light guide plate 11 in the position on light guide plate 11,
And then the scattering light R in light guide plate 11, make light R that can transmit towards keycap 2 and become backlight BL, is shone with providing keycap 2
Required light source.The light guide plate reflecting layer 13 is, for example, the white ink being coated on light guide plate 11, can be used for reflection light
The light R of light guide plate 11 is transmitted towards the direction away from barn door 12 and will be left in 11 inside of plate, makes light R in light guide plate 11
Portion is transmitted towards barn door 12, also that is, the light R that light guide plate reflecting layer 13 can will be disengaged from light guide plate 11 reflects back into light guide plate 11
It is interior, light guide plate 11 is left towards the direction away from barn door 12 to avoid the light R inside light guide plate 11.
In conclusion the light guide plate due to the present embodiment backlight module has light guide plate reflecting layer, thus light guide plate has both
There is reflecting plate, therefore the backlight module of the present embodiment can save the setting of reflecting plate, and then reach and reduce backlight module thickness
The purpose of degree, and lightening requirement can be met using the illuminated keyboard of the present embodiment backlight module by allowing.
3rd embodiment：
Please also refer to Fig. 6, wherein shown in the schema as referenced by left column, reflecting plate 13 is set to light guide plate 11 away from screening
The side of tabula rasa 12 returns to light R to reflect the light R for transmitting towards the direction away from barn door 12 and leaving light guide plate 11
The inside of light guide plate 11 is simultaneously transmitted towards barn door 12, and the light R1 that reflecting plate can will be disengaged from light guide plate 11 reflects back into light guide plate
In 11.And 3rd embodiment is with the maximum difference of first embodiment, reflecting plate 13 is arranged in close to the position of light guide plate 11
Reflecting plate light-emitting component 131, reflecting plate light-emitting component 131 have light-emitting surface and can provide light R to light guide plate 11.
In conclusion the light source due to the present embodiment backlight module is set to reflecting plate, therefore the backlight module of the present embodiment can
The setting of light source circuit board is saved, and then reaches the purpose for reducing backlight module thickness, and is allowed using the present embodiment backlight module
Illuminated keyboard can meet lightening requirement.
By the above detailed description of preferred embodiments, it is intended to more clearly describe feature and spirit of the invention,
And not protection scope of the present invention is limited with above-mentioned disclosed preferred embodiment.On the contrary, its purpose
It is intended to cover various changes and has being arranged in the scope of protection of the claims of the invention to be applied of equality.Cause
This, scope of protection of the claims of the invention should illustrate the most wide explanation of work according to above-mentioned, to cause it to cover institute
Possible change and the arrangement of tool equality.
Claims (11)
1. a kind of backlight module can be used for illuminating multiple keycaps, have keycap gap between multiple keycap, it is characterised in that the back
Optical module includes：
Light guide plate, the light guide plate are located at below multiple keycap, which has multiple diffusing structures, multiple diffusing structure
It is located at the lower section of one of multiple keycap；And
Barn door, for the barn door between multiple keycap and the light guide plate, which has barn door ontology, shading
It is close that portion, multiple exposure portions, circuit and barn door light-emitting component, the light shielding part and multiple exposure portion are located at the barn door ontology
The side of multiple keycap, the circuit and the barn door light-emitting component are located at one that the barn door ontology deviates from multiple keycap
Side；
Wherein, which provides electric energy to the barn door light-emitting component, which emits light towards the light guide plate,
The light can transmit inside the light guide plate, and when the light advances to multiple diffusing structure, multiple diffusing structure makes this
Light portion is detached from the light guide plate；
Wherein, which is located at below the keycap gap, and blocks the light and project via the keycap gap, multiple exposure
Portion is located at the lower section of one of multiple keycap, and the light is made to may pass through multiple exposure portion and be respectively facing multiple
Keycap transmitting.
2. backlight module according to claim 1, it is characterised in that：The backlight module further includes reflecting plate, the reflecting plate
Deviate from the side of the barn door positioned at the light guide plate, the light which will be disengaged from the light guide plate reflects back into the light guide plate
It is interior.
3. backlight module according to claim 1, it is characterised in that：The light guide plate further has light guide plate reflecting layer,
The light guide plate reflecting layer is located at the side that the light guide plate deviates from the keycap, which will be disengaged from the light of the light guide plate
Line reflection returns in the light guide plate.
4. backlight module according to claim 3, it is characterised in that：The light guide plate reflecting layer is made of reflectance ink,
The reflectance ink is white ink.
5. a kind of backlight module can be used for illuminating multiple keycaps, have keycap gap between multiple keycap, it is characterised in that the back
Optical module includes：
Light guide plate, the light guide plate are located at below multiple keycap, which has multiple diffusing structures, multiple diffusing structure
It is located at the lower section of one of multiple keycap；
Barn door, for the barn door between multiple keycap and the light guide plate, which has barn door ontology, light shielding part
With multiple exposure portions, the light shielding part and multiple exposure portion are located at the barn door ontology close to the side of multiple keycap；And
Reflecting plate, which is set to the side that the light guide plate deviates from the barn door, and the reflecting plate has the luminous member of reflecting plate
Part, the reflecting plate light-emitting component emit light towards the light guide plate, which can transmit inside the light guide plate, when the light is advanced
When to multiple diffusing structure, multiple diffusing structure makes the light portion be detached from the light guide plate；
Wherein, which is located at below the keycap gap, and blocks the light and project via the keycap gap, multiple exposure
Portion is located at the lower section of one of multiple keycap, and the light is made to may pass through multiple exposure portion and be respectively facing multiple
Keycap transmitting.
6. according to claim 1,3 or 5 described in any item backlight modules, it is characterised in that：The diffusing structure is concave-convex micro- knot
Structure or scattering netted dot.
7. according to claim 1,3 or 5 described in any item backlight modules, it is characterised in that：The barn door ontology is PET plastic cement
Body or PI plastic body.
8. a kind of shading board fabrication method, for manufacturing the screening as described in any one of claim 1,3 or 5 in backlight module
Tabula rasa, it is characterised in that the shading board fabrication method includes the following steps：
The barn door ontology is provided；
The circuit is formed in the bottom surface of the barn door ontology；
The top surface of the barn door ontology is partitioned into lightproof area and exposure region, and in the lightproof area print black out ink with
The light shielding part is formed, and the black out ink is not printed onto the exposure region, the exposure region is made to become the exposure portion；And
The barn door light-emitting component is welded in the circuit by SMT technology, and completes for the barn door light-emitting component to be set to
The barn door ontology.
9. a kind of shading board fabrication method, for manufacturing the screening as described in any one of claim 1,3 or 5 in backlight module
Tabula rasa, it is characterised in that the shading board fabrication method includes the following steps：
The barn door ontology is provided；
The circuit is formed in the bottom surface of the barn door ontology；
Black out ink is printed into the top surface of the barn door ontology；
The top surface of the barn door ontology is partitioned into lightproof area and exposure region, and the dew is printed in by hole knockout removal
The black out ink in light region makes the black out ink for being printed in the lightproof area form the shading to form the exposure portion
Portion；And
The barn door light-emitting component is welded in the circuit by SMT technology, and completes for the barn door light-emitting component to be set to
The barn door ontology.
10. the shading board fabrication method according to any one of claim 8 or 9, it is characterised in that：This method further include with
Lower step：
Before the step of bottom surface of the barn door ontology forms the circuit, by printing silver paste in the bottom surface of the barn door ontology
Route in a manner of by the silver paste route and in the underrun electroless copper of the barn door ontology and forms the circuit.
11. shading board fabrication method according to claim 8, it is characterised in that：The black out ink is black ink.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810811191.8A CN108878202A (en) | 2018-07-23 | 2018-07-23 | Backlight module and its manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810811191.8A CN108878202A (en) | 2018-07-23 | 2018-07-23 | Backlight module and its manufacturing method |
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| CN108878202A true CN108878202A (en) | 2018-11-23 |
Family
ID=64304115
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810811191.8A Withdrawn CN108878202A (en) | 2018-07-23 | 2018-07-23 | Backlight module and its manufacturing method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110752109A (en) * | 2019-09-16 | 2020-02-04 | 苏州达方电子有限公司 | Backlight module and manufacturing method thereof |
| CN111489906A (en) * | 2019-06-18 | 2020-08-04 | 光宝电子(广州)有限公司 | Key backlight module and application thereof |
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Application publication date: 20181123 |