MINI keyboard backlight module

Abstract

The utility model relates to the technical field of keyboard backlight modules, in particular to a MINI keyboard backlight module, and solves the technical problems that the whole FPC (Flexible Printed Circuit) manufacturing process of the backlight module in the market in the prior art is relatively complicated, so that the whole cost of the keyboard backlight module is increased when a whole FPC lamp panel is used, and the manufacturing cost of the keyboard backlight module is increased. Meanwhile, the whole FPC lamp panel is limited by the size of production equipment in the manufacturing process, so that the length and the width of the FPC lamp panel can not meet the requirements of certain specific applications, and the practicability of the keyboard backlight module is low. The MINI keyboard backlight module comprises a shading film, a light guide plate, a reflecting film and a lamp panel which are sequentially arranged from top to bottom, the shading film is located on a pattern part on the surface of the light guide plate, the shading film is matched with the reflecting film in boundary dimension, and the lamp panel is arranged at the bottom of the reflecting film. According to the utility model, the effects of reducing the cost and improving the brightness are achieved, and the requirements of some specific applications are met. And the design flexibility and expandability of the keyboard backlight module are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of keyboard backlight modules, in particular to a MINI keyboard backlight module. Background Art

[0002] The keyboard is the most commonly used and most important input device. English letters, Chinese characters, numbers, punctuation marks, etc. can be input into the computer through the keyboard, so as to issue commands to the computer, input data, etc. It can be said that since the day when the computer was born, the keyboard has been one of the indispensable peripheral devices of the computer. In order to make the keyboard have a better use effect, the backlight keyboard came into being. The keycap is designed as a light-transmitting structure, and the light emitted by the backlight module is used to illuminate the keycap. It is suitable for night input and easy to see the words on the keycap.

[0003] At present, the brightness of the existing backlight modules on the market is generally weak. Most of the backlight module structures are composed of shading film, light guide plate, and full-page FPC light board. However, due to the relatively complex production process of full-page FPC, the use of full-page FPC light board will increase the overall cost of the keyboard backlight module. At the same time, the full-page FPC light board is limited by the size of the production equipment during the manufacturing process, so its length and width may not meet the needs of certain specific applications. This limits the design flexibility and scalability of the keyboard backlight module, resulting in low practicality of the keyboard backlight module. Therefore, we propose a MINI keyboard backlight module to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide a MINI keyboard backlight module, which solves the problem that the existing backlight modules on the market in the prior art are relatively complicated in the production process of the whole-page FPC, which makes the use of the whole-page FPC light board increase the overall cost of the keyboard backlight module, and at the same time, the whole-page FPC light board is limited by the size of the production equipment during the manufacturing process, so its length and width may not meet the needs of certain specific applications, causing the problem of low practicality of the keyboard backlight module.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A MINI keyboard backlight module comprises a shading film, a light guide plate, a reflecting film and a light board which are arranged in sequence from top to bottom. The shading film is located at a pattern portion on the surface of the light guide plate. The shading film and the reflecting film have outer dimensions that match each other. A light board is arranged at the bottom of the reflecting film.

[0007] Preferably, a plurality of LED lamp holes are arranged on the reflective film, and the plurality of LED lamp holes are arranged at intervals.

[0008] Preferably, there are multiple pattern parts, the multiple pattern parts are arranged at intervals, the multiple pattern parts are arranged in one-to-one correspondence with the LED lamp holes, and the pattern parts are located above the corresponding LED lamp holes.

[0009] Preferably, a plurality of long button lamp holes are provided on the lower surface of the light guide plate, and the plurality of long button lamp holes are arranged at intervals, and the long button lamp holes are adapted to correspond to the LED lamp holes. A plurality of small button lamp holes are provided on the lower surface of the light guide plate, and the plurality of small button lamp holes are all arranged between two adjacent buttons.

[0010] Preferably, FPC light boards are distributed on the light board, and two FPC light boards are arranged crosswise.

[0011] Preferably, a plurality of FPC gold fingers are arranged on the lamp board, and a plurality of lamp beads are arranged on the lamp board.

[0012] The utility model has at least the following beneficial effects:

[0013] The startup light board lights up multiple lamp beads, converts the point light source into a surface light source through the LED light hole, and then enters the light shielding film to highlight the content of the pattern part, making it easier to use the keys. The structural changes and optimizations are made through the appearance of the FPC light board, and the material area of ​​the FPC is reduced by splicing the panels, thereby achieving the effect of reducing costs and increasing brightness to meet the needs of certain specific applications. Improve the design flexibility and scalability of the keyboard backlight module.

[0014] The utility model also has the following beneficial effects:

[0015] By lighting up multiple lamp beads, the light of the lamp beads is transmitted through the LED lamp holes to the reflective film to diffuse and reflect the light. The light source lit by the lamp beads can be converted into a surface light source through the multiple LED lamp holes, so that the luminous flux in the light guide plate is increased. The long key lamp hole and the small key lamp hole are arranged between the keys to evenly disperse the light, so that the character pattern on the keycap is evenly illuminated. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 It is a structural schematic diagram of the reflective film of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the light board of the utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the light guide plate of the utility model;

[0021] Figure 5 It is a structural schematic diagram of the FPC lamp board of the utility model.

[0022] In the figure: 1. Shading film; 2. Light guide plate; 3. Reflective film; 4. Light board; 5. Long button light hole; 6. Small button light hole; 7. LED light hole; 8. FPC light board; 9. FPC gold finger; 10. Lamp beads. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0024] Reference Figure 1-5 A MINI keyboard backlight module includes a shading film 1, a light guide plate 2, a reflective film 3, and a light board 4 which are arranged in sequence from top to bottom. The shading film 1 is located at the pattern part of the surface of the light guide plate 2. The shading film 1 and the reflective film 3 are adapted in size. A light board 4 is arranged at the bottom of the reflective film 3. Specifically, the light board 4 is started to light up a plurality of lamp beads 10, and the point light source is converted into a surface light source through the LED lamp hole 7, and then enters the shading film 1 to highlight the content of the pattern part, which is convenient for using keys. The structural change and optimization are performed through the shape of the FPC light board 8, and the material area of ​​the FPC is reduced by the way of splicing panels, so as to achieve the effect of reducing costs and improving brightness, thereby improving the practicality of the keyboard backlight module.

[0025] Furthermore, a plurality of LED lamp holes 7 are arranged on the reflective film 3, and the plurality of LED lamp holes 7 are arranged at intervals. Specifically, through the arrangement of the LED lamp holes 7 and the lighting of a plurality of lamp beads 10, the light of the lamp beads 10 is transmitted through the LED lamp holes 7 to the reflective film 3 to diffuse and reflect the light.

[0026] Furthermore, there are multiple pattern parts, which are arranged at intervals, and the multiple pattern parts are arranged one by one corresponding to the LED lamp holes 7, and the pattern parts are located above the corresponding LED lamp holes 7. Specifically, the light source lit by the lamp beads 10 can be converted into a surface light source through the multiple LED lamp holes 7, so that the luminous flux in the light guide plate 2 is increased.

[0027] Furthermore, a plurality of long key lamp holes 5 are provided on the lower surface of the light guide plate 2, and the plurality of long key lamp holes 5 are arranged at intervals, and the long key lamp holes 5 correspond to and fit with the LED lamp holes 7. A plurality of small key lamp holes 6 are provided on the lower surface of the light guide plate 2, and the plurality of small key lamp holes 6 are all arranged between two adjacent keys. Specifically, by arranging the long key lamp holes 5 and the small key lamp holes 6, by arranging the two types of lamp holes between the keys, and arranging light guide points at the positions of the light transmission holes of the keyboard, the light can be evenly dispersed, so that the character patterns on the keycaps are evenly illuminated.

[0028] Furthermore, FPC light boards 8 are distributed on the light board 4, and two FPC light boards 8 are cross-arranged. Specifically, through the arrangement of the FPC light boards 8, the material area on the FPC light boards 8 is reduced between each row of the FPC light boards 8 and the multiple lamp beads 10, and the two FPC light boards 8 are cross-assembled, leaving a part of space in the middle for direct line connection, and the integrity of the FPC light boards 8 can also be ensured.

[0029] Furthermore, a plurality of FPC gold fingers 9 are arranged on the lamp board 4, and a plurality of lamp beads 10 are arranged on the lamp board 4. Specifically, through the arrangement of the FPC gold fingers 9, the outlet wires of the FPC gold fingers 9 adopt a bent and flattened structure, which makes it possible to reduce the protruding area of ​​the FPC gold fingers 9 and improve applicability.

[0030] In summary:

[0031] When in use, the light board 4 is started to light up multiple lamp beads 10 to emit light, and the LED lamp holes 7 on the light guide plate 2 are used to convert the point light source into a surface light source. The light then enters the light shielding film 1 and is emitted to the outside of the keyboard. At this time, the pattern portion blocks the light from being transmitted, and the light and dark highlight the content of the pattern, which is convenient for users to observe the keys. The FPC lamp board 8 is used to increase the overall brightness of the lamp beads 10 in the lamp board 4, and has the effect of saving energy and reducing consumption. The structural changes and optimizations are made through the appearance of the FPC lamp board 8, and the material area of ​​the FPC is reduced by means of panelization, thereby achieving the effect of reducing costs and increasing brightness, improving the practicality of the keyboard backlight module, and meeting the needs of certain specific applications. Improve the design flexibility and scalability of the keyboard backlight module.

[0032] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and the specification only describe the principles of the utility model. The utility model may be subject to various changes and improvements without departing from the spirit and scope of the utility model. These changes and improvements fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A MINI keyboard backlight module, characterized in that: The invention comprises a shading film (1), a light guide plate (2), a reflecting film (3), and a light board (4) which are arranged in sequence from top to bottom, wherein the shading film (1) is located at a pattern portion on the surface of the light guide plate (2), the shading film (1) and the reflecting film (3) have outer dimensions that are compatible, a light board (4) is arranged at the bottom of the reflecting film (3), a plurality of LED lamp holes (7) are arranged on the reflecting film (3), and the plurality of LED lamp holes (7) are arranged at intervals, a plurality of pattern portions are arranged at intervals, the plurality of pattern portions are arranged in one-to-one correspondence with the LED lamp holes (7), and the pattern portions are located at the corresponding LED lamp holes ( 7), a plurality of long key light holes (5) are arranged on the lower surface of the light guide plate (2), the plurality of long key light holes (5) are arranged at intervals, the long key light holes (5) are adapted to correspond to the LED light holes (7), a plurality of small key light holes (6) are arranged on the lower surface of the light guide plate (2), and the plurality of small key light holes (6) are arranged between two adjacent keys, FPC light boards (8) are distributed on the light board (4), and the two FPC light boards (8) are arranged to be crossed, a plurality of FPC gold fingers (9) are arranged on the light board (4), and a plurality of lamp beads (10) are arranged on the light board (4).

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