CN215988543U - Backlight module - Google Patents
Backlight module Download PDFInfo
- Publication number
- CN215988543U CN215988543U CN202122217164.8U CN202122217164U CN215988543U CN 215988543 U CN215988543 U CN 215988543U CN 202122217164 U CN202122217164 U CN 202122217164U CN 215988543 U CN215988543 U CN 215988543U
- Authority
- CN
- China
- Prior art keywords
- ink layer
- hole
- light
- mounting hole
- guide plate
- 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.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
Abstract
The utility model provides a backlight module, which comprises a light emitting source, a reflecting film, a light guide plate and a patterned shading film. The light guide plate is arranged on the reflecting film, wherein the light guide plate is provided with a first broken hole and a first mounting hole, and the light source is arranged in the first broken hole. The patterned light shielding film is arranged on the light guide plate and comprises a light transmitting film, a first ink layer and a second ink layer, wherein the light transmitting film is provided with a first surface facing the light guide plate, a second surface opposite to the first surface and a second mounting hole corresponding to the first mounting hole. The first ink layer is arranged on the first surface, the second ink layer is arranged on the second surface, the second ink layer is provided with an annular part surrounding the second mounting hole, and the distance between the inner edge of the annular part and the edge of the second mounting hole is kept. The backlight module provided by the utility model can improve the light leakage phenomenon and improve the operation experience of use.
Description
Technical Field
The present disclosure relates to backlight modules, and particularly to a backlight module for a keyboard.
Background
The keyboard is used as a common physical input interface and is a standard equipment of the notebook computer. With the increasing demands of users on operation experience, light-emitting keyboards have been proposed to satisfy the visual and sensory experiences of users. Generally, a light-emitting keyboard is integrated with a backlight module, and the backlight module is disposed in a housing of a host. The backlight module is mostly composed of a light source, a reflective film, a light guide plate and a Mylar (Mylar), wherein the light guide plate and the Mylar respectively have mounting holes for screws to be locked therein, thereby fixing the Mylar and the light guide plate. In detail, light emitted by the light source is transmitted in the light guide plate, and when the light passes through the mounting hole of the light guide plate, the light is easy to leak out of the mounting hole of the polyester film, thereby affecting the operation experience of use.
SUMMERY OF THE UTILITY MODEL
The utility model provides a backlight module which can improve the light leakage phenomenon and improve the operation experience of use.
The utility model provides a backlight module, which comprises a light emitting source, a reflecting film, a light guide plate and a patterned shading film. The light guide plate is arranged on the reflecting film, wherein the light guide plate is provided with a first broken hole and a first mounting hole, and the light source is arranged in the first broken hole. The patterned light shielding film is arranged on the light guide plate and comprises a light transmitting film, a first ink layer and a second ink layer, wherein the light transmitting film is provided with a first surface facing the light guide plate, a second surface opposite to the first surface and a second mounting hole corresponding to the first mounting hole. The first ink layer is arranged on the first surface, the second ink layer is arranged on the second surface, the second ink layer is provided with an annular part surrounding the second mounting hole, and the distance between the inner edge of the annular part and the edge of the second mounting hole is kept.
In an embodiment of the utility model, the first ink layer is a white ink layer covering the first surface, and the second ink layer is a black ink layer covering the second surface. The annular part is an annular black ring, and part of the first ink layer falls between the inner edge of the annular part and the edge of the second mounting hole.
In an embodiment of the utility model, the first ink layer is a black ink layer covering the first surface, and the second ink layer is a white ink layer covering the second surface. The annular part is a hollow annular groove which exposes the first ink layer and divides the second ink layer into an annular white ring.
In an embodiment of the utility model, the annular white ring surrounds the second mounting hole, and an inner edge of the annular white ring overlaps an edge of the second mounting hole.
In an embodiment of the utility model, the light guide plate further has at least one interference hole disposed between the first broken hole and the first mounting hole. The light emitted by the light source is transmitted to the first mounting hole along the first direction, and the interference hole falls on the transmission path of the light emitted by the light source.
In an embodiment of the present invention, a length of the interference hole in a second direction perpendicular to the first direction is equal to or greater than a diameter of the first mounting hole.
In an embodiment of the utility model, the number of the interference holes is two, and the two interference holes are arranged in parallel along the second direction.
In an embodiment of the utility model, the number of the interference holes is two, and the two interference holes are arranged in parallel along the first direction.
In an embodiment of the utility model, the backlight module further includes a light source circuit board, wherein the light guide plate and the light source circuit board are respectively located at two opposite sides of the reflective film, and the light source circuit board covers the first hole. The light source is electrically connected to the light source circuit board.
In an embodiment of the utility model, the reflective film has a second hole connected to and overlapping the first hole. The light source is arranged in the first broken hole and the second broken hole, and the light source circuit board covers the first broken hole and the second broken hole.
In view of the above, in the backlight module of the present invention, the ink layer is disposed around the mounting hole of the patterned light shielding film to absorb or shield light from the light guide plate, so as to improve light leakage occurring in the mounting hole of the patterned light shielding film, thereby facilitating improvement of operation experience of the backlight module.
In order to make the aforementioned and other features and advantages of the utility model more comprehensible, embodiments accompanied with figures are described in detail below.
Drawings
FIG. 1 is a schematic partial cross-sectional view illustrating a backlight module applied to a keyboard according to an embodiment of the present invention;
FIG. 2 is a schematic top view of a portion of a patterned light-shielding film according to an embodiment of the utility model;
FIG. 3 is a schematic top view of a light guide plate according to an embodiment of the present invention;
FIGS. 4A and 4B are schematic partial cross-sectional views of the patterned light-shielding film of FIG. 2 taken along the cross-sectional line I-I;
fig. 5A to 5E are schematic top views of combinations of mounting holes on a light guide plate and interference holes of different embodiments.
Detailed Description
Fig. 1 is a schematic partial cross-sectional view illustrating a backlight module applied to a keyboard according to an embodiment of the utility model. Fig. 2 is a schematic top view of a portion of a patterned light-shielding film according to an embodiment of the utility model. Fig. 3 is a schematic top view of a portion of a light guide plate according to an embodiment of the utility model. Referring to fig. 1 to fig. 3, in the present embodiment, the keyboard 10 is a light-emitting keyboard, and includes a backlight module 100, a carrier 11, and a plurality of key structures 12. The carrier 11 is disposed on the backlight module 100, and the plurality of key structures 12 are disposed on the carrier 11. Further, the backlight module 100 includes a light source 110, a reflective film 120, a light guide plate 130 and a patterned light shielding film 140, wherein the light guide plate 130 is disposed on the reflective film 120 and has a first hole 131 for accommodating the light source 110. The light L emitted from the light source 110 can enter the light guide plate 130, and is transmitted in the light guide plate 130, and finally exits from the light exiting surface of the light guide plate 130.
The patterned light shielding film 140 is disposed on the light guide plate 130, and the carrier 11 is disposed on the patterned light shielding film 140. The light guide plate 130 also has a first mounting hole 132, wherein the patterned light shielding film 140 has a second mounting hole 141 corresponding to the first mounting hole 132, and the carrier 11 has a third mounting hole 11a corresponding to the second mounting hole 141. The first, second and third mounting holes 132, 141 and 11a are used for screws to fix the light guide plate 130, the patterned light shielding film 140 and the carrier 11.
Fig. 4A and 4B are schematic partial cross-sectional views of the patterned light-shielding film of fig. 2 along a cross-sectional line I-I, and illustrate two different embodiments. Referring to fig. 1, fig. 2 and fig. 4A, in one embodiment, the patterned light shielding film 140 includes a light transmissive film 1401, a white ink layer 1402 (i.e., a first ink layer) and a black ink layer 1403 (i.e., a second ink layer), wherein the light transmissive film 1401 may be a polyester film, and the light transmissive film 1401 has a first surface 1404 facing the light guide plate 130 and a second surface 1405 opposite to the first surface 1404. The carrier 11 contacts the second surface 1405, wherein the second mounting holes 141 are distributed on the light-transmitting film 1401 and penetrate through the first surface 1404 and the second surface 1405.
Referring to fig. 2 and 4A, a white ink layer 1402 (i.e., a first ink layer) covers a first surface 1404, and a black ink layer 1403 (i.e., a second ink layer) covers a second surface 1405. The black ink layer 1403 (i.e., the second ink layer) may be formed by an annular portion 1406 surrounding the second mounting hole 141, wherein the annular portion 1406 is an annular black ring 1403a formed on the second surface 1405 by the black ink, and an inner edge of the annular black ring 1403a is spaced from an edge of the second mounting hole 141. Since the light-transmitting film 1401 is a transparent film or a translucent film, the light-transmitting film is oriented to the second surface 1405 from the top view, and is sequentially a white ink layer 1402 (i.e., a first ink layer), a black ink layer 1403 (i.e., a second ink layer), and the white ink layer 1402 (i.e., a first ink layer) from the second mounting hole 141 to the outside, and an inner edge of the annular black ring 1403a and an edge of the second mounting hole 141 are separated by the white ink layer 1402 (i.e., the first ink layer), or that is, a part of the white ink layer 1402 (i.e., the first ink layer) falls between an inner edge of the annular black ring 1403a and an edge of the second mounting hole 141. When looking down at the second surface 1405, the white ink layer 1402 (i.e., the first ink layer) covering the first surface 1404 can be seen between the annular black circle 1403a and the second mounting hole 141, such as an annular white circle 1402 a.
Referring to fig. 1, fig. 2 and fig. 4B, in another embodiment, a black ink layer 1403 (i.e., a first ink layer) covers a first surface 1404, and a white ink layer 1402 (i.e., a second ink layer) covers a second surface 1405. Further, the annular portion 1406 is a hollow annular groove formed on the white ink layer 1402 (i.e., the second ink layer), wherein the hollow annular groove exposes the black ink layer 1403 (i.e., the first ink layer), and divides the white ink layer 1402 (i.e., the second ink layer) into an annular white ring 1402 a. Since the light-transmitting film 1401 is a transparent film or a translucent film, the black ink layer 1403 (i.e., the first ink layer) exposed to the hollowed-out annular groove forms an annular black ring 1403a and surrounds the annular white ring 1402a when looking down at the second surface 1405. Further, from the second mounting hole 141, the white ink layer 1402 (i.e., the first ink layer or the annular white circle 1402a), the black ink layer 1403 (i.e., the first ink layer or the annular black circle 1403a), and the white ink layer 1402 (i.e., the second ink layer) are arranged in sequence. Further, the annular white ring 1402a surrounds the second mounting hole 141, and an inner edge of the annular white ring 1402a overlaps an edge of the corresponding second mounting hole 141.
Based on the disposition relationship of the patterned light shielding film 140 in any of the above embodiments, the black ink layer 1403 can be used to absorb or shield the light from the light guide plate 130, thereby facilitating the improvement of the light leakage phenomenon occurring in the second mounting hole 141, and further improving the operation experience of the user.
Referring to fig. 1, in the present embodiment, the keyboard 10 further includes a thin film circuit 13, wherein the thin film circuit 13 is disposed on the carrier 11 and located between the plurality of key structures 12 and the carrier 11. In addition, the backlight module 100 further includes a light source circuit board 150, wherein the light guide plate 130 and the light source circuit board 150 are respectively located at two opposite sides of the reflective film 120, and the reflective film 120 has a second hole 121 connected to and overlapped with the first hole 131 for accommodating the light source 110. That is, the light source 110 is disposed in the first hole 131 and the second hole 121, wherein the light source circuit board 150 covers the first hole 131 and the second hole 121, and the light source 110 is electrically connected to the light source circuit board 150.
Referring to fig. 3, the light guide plate 130 further has an interference hole 133 disposed between the first broken hole 131 and the first mounting hole 132, and the light L emitted from the light source 113 is transmitted to the first mounting hole 132 along the first direction D1. Further, the two interference holes 133 are disposed in parallel along the first direction D1 and fall on a path of the light L transmitted to the first mounting hole 132. The light L passing through the two interference holes 133 generates light loss before the light L passes to reach the first mounting hole 132, thereby contributing to improvement of a light leakage phenomenon occurring at the first mounting hole 132.
In the present embodiment, the length of each interference hole 133 in the second direction D2 perpendicular to the first direction D1 is equal to or greater than the aperture diameter of the first mounting hole 132. In other embodiments, the length of one of the two interference holes in the second direction is equal to or greater than the aperture of the first mounting hole, and the length of the other of the two interference holes in the second direction is less than the aperture of the first mounting hole. In addition, the number and arrangement mode of the interference holes can be increased or decreased according to the actual design requirement.
Fig. 5A to 5E are schematic top views of combinations of mounting holes on a light guide plate and interference holes of different embodiments. Referring to fig. 5A, the first mounting hole 132 is correspondingly provided with an interference hole 133, and the length of the interference hole 133 in the second direction D2 is greater than or equal to the aperture of the first mounting hole 132.
Referring to fig. 5B, the first mounting hole 132 is correspondingly provided with two interference holes 133a, and the two interference holes 133a are arranged in parallel along the second direction D2. In addition, the length of each interference hole 133a in the second direction D2 is smaller than the aperture diameter of the first mounting hole 132.
Referring to fig. 5C, the first mounting hole 132 is correspondingly provided with an interference hole 133 and two interference holes 133a, wherein the interference hole 133 and any one of the interference holes 133a are arranged in parallel along the first direction D1, and the two interference holes 133a are arranged in parallel along the second direction D2. In addition, the two interference holes 133a are located between the interference hole 133 and the first mounting hole 132.
Referring to fig. 5D, the first mounting hole 132 is correspondingly provided with an interference hole 133 and two interference holes 133a, wherein the interference hole 133 and any one of the interference holes 133a are arranged in parallel along the first direction D1, and the two interference holes 133a are arranged in parallel along the second direction D2. In addition, the interference hole 133 is located between the two interference holes 133a and the first mounting hole 132.
Referring to fig. 5E, the first mounting hole 132 is correspondingly provided with four interference holes 133a, wherein any two interference holes 133 are arranged in parallel along the first direction D1, and any two interference holes 133a are arranged in parallel along the second direction D2.
In summary, in the backlight module of the present invention, the light guide plate is provided with the interference hole on the path of the light transmitted to the first mounting hole, and the light transmitted through the interference hole generates light loss before the light reaches the first mounting hole, thereby contributing to improving the light leakage phenomenon occurring in the first mounting hole. On the other hand, the periphery of the second mounting hole of the patterned light shielding film is provided with the ink layer for absorbing or shielding light from the light guide plate, so that the light leakage phenomenon generated in the second mounting hole is favorably improved. Meanwhile, the light leakage phenomenon is improved, so that the operation experience of use is promoted.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A backlight module, comprising:
a light source;
a reflective film;
the light guide plate is arranged on the reflecting film, the light guide plate is provided with a first broken hole and a first mounting hole, and the light source is arranged in the first broken hole; and
the light guide plate comprises a light guide plate, a patterned light shielding film arranged on the light guide plate, wherein the patterned light shielding film comprises a light transmitting film, a first ink layer and a second ink layer, the light transmitting film is provided with a first surface facing the light guide plate, a second surface opposite to the first surface and a second mounting hole corresponding to the first mounting hole, the first ink layer is arranged on the first surface, the second ink layer is arranged on the second surface, the second ink layer is provided with an annular part surrounding the second mounting hole, and the inner edge of the annular part keeps a distance with the edge of the second mounting hole.
2. The backlight module of claim 1, wherein the first ink layer is a white ink layer covering the first surface, the second ink layer is a black ink layer covering the second surface, the annular portion is an annular black ring, and a part of the first ink layer falls between an inner edge of the annular portion and an edge of the second mounting hole.
3. The backlight module of claim 1, wherein the first ink layer is a black ink layer covering the first surface, the second ink layer is a white ink layer covering the second surface, the annular portion is a hollow annular groove exposing the first ink layer, and the second ink layer is divided into an annular white ring.
4. The backlight module of claim 3, wherein the annular white ring surrounds the second mounting hole, and an inner edge of the annular white ring overlaps an edge of the second mounting hole.
5. The backlight module of claim 1, wherein the light guide plate further comprises at least one interference hole disposed between the first hole and the first mounting hole, wherein the light emitted from the light source is transmitted to the first mounting hole along a first direction, and the at least one interference hole falls on a transmission path of the light emitted from the light source.
6. The backlight module of claim 5, wherein the length of the at least one interference hole in a second direction perpendicular to the first direction is equal to or greater than the aperture of the first mounting hole.
7. The backlight module of claim 6, wherein the at least one interference hole is two in number, and the two interference holes are juxtaposed along the second direction.
8. The backlight module of claim 5, wherein the at least one interference hole is two in number, and the two interference holes are arranged in parallel along the first direction.
9. The backlight module of claim 1, further comprising a light source circuit board, wherein the light guide plate and the light source circuit board are respectively disposed at two opposite sides of the reflective film, the light source circuit board covers the first hole, and the light source is electrically connected to the light source circuit board.
10. The backlight module of claim 9, wherein the reflective film has a second hole connected to and overlapping the first hole, the light source is disposed in the first hole and the second hole, and the light source circuit board covers the first hole and the second hole.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US202063107439P | 2020-10-30 | 2020-10-30 | |
| US63/107,439 | 2020-10-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215988543U true CN215988543U (en) | 2022-03-08 |
Family
ID=80465815
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110706767.6A Pending CN114527885A (en) | 2020-10-30 | 2021-06-24 | Mouse (Saggar) |
| CN202122217164.8U Active CN215988543U (en) | 2020-10-30 | 2021-09-14 | Backlight module |
| CN202122610354.6U Active CN215988136U (en) | 2020-10-30 | 2021-10-28 | Electronic device and cable |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110706767.6A Pending CN114527885A (en) | 2020-10-30 | 2021-06-24 | Mouse (Saggar) |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122610354.6U Active CN215988136U (en) | 2020-10-30 | 2021-10-28 | Electronic device and cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (3) | CN114527885A (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201540845U (en) * | 2009-07-17 | 2010-08-04 | 苏州达方电子有限公司 | Keypad and keyboard |
| CN102043477B (en) * | 2009-10-13 | 2012-10-03 | 致伸科技股份有限公司 | Mouse with adjustable key pressing force |
| US10268287B2 (en) * | 2016-12-01 | 2019-04-23 | Dexin Electronic Ltd. | Keystroke type mouse with digital and analog signal outputs |
| CN109782891B (en) * | 2017-11-10 | 2022-05-03 | 致伸科技股份有限公司 | Mouse with key feedback mechanism |
| TW201918836A (en) * | 2017-11-10 | 2019-05-16 | 致伸科技股份有限公司 | Mouse with button feedback mechanism |
| CN107785202B (en) * | 2017-11-16 | 2019-11-12 | 东莞璟阳电子科技有限公司 | A kind of magnetic press key |
-
2021
- 2021-06-24 CN CN202110706767.6A patent/CN114527885A/en active Pending
- 2021-09-14 CN CN202122217164.8U patent/CN215988543U/en active Active
- 2021-10-28 CN CN202122610354.6U patent/CN215988136U/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN215988136U (en) | 2022-03-08 |
| CN114527885A (en) | 2022-05-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110033978B (en) | Input device and pointing unit | |
| TWI697021B (en) | Illuminated keyboard and backlight module thereof | |
| TWI416565B (en) | Illuminating keyboard | |
| CN111477487A (en) | Input device | |
| US9040856B2 (en) | Luminous keyboard device | |
| TWI677000B (en) | Backlight module | |
| US11175444B1 (en) | Luminous keyboard and backlight module thereof | |
| US11764008B2 (en) | Circuit structure, backlight module and light-emitting key device using the same | |
| CN112447434A (en) | Optoelectronic module | |
| US9022590B2 (en) | Luminous keyboard device | |
| TWI501275B (en) | Luminous keyboard device | |
| CN215988543U (en) | Backlight module | |
| US20180342361A1 (en) | Luminous keyboard | |
| CN113963975A (en) | Backlight module and luminous keyboard | |
| JP2013117940A (en) | Light emission keyboard and light source module thereof | |
| CN107949147B (en) | Flexible circuit board and touch control equipment | |
| US11099315B1 (en) | Backlight module | |
| US9502191B1 (en) | Luminous keyboard | |
| CN215988544U (en) | Keyboard with a keyboard body | |
| CN114077008B (en) | Backlight module | |
| CN217333917U (en) | Keyboard assembly | |
| US11861079B1 (en) | Luminous touch pad module | |
| CN114758915B (en) | Light guide plate and backlight keyboard | |
| CN214541445U (en) | Touch control module | |
| TWI833548B (en) | Illuminated touch pad |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |