TWM493093U - Keyboard backlight apparatus - Google Patents

Description

Keyboard backlight

The present invention provides a backlight device for a keyboard, especially an integrally formed light shielding film and a reflection sheet, which is convenient for a backlight device for post-stacking application, and is integrally formed with one or more reflections on at least one side of the light shielding film. The sheet is provided with one or more reflective sheets folded on one side surface of the light shielding sheet, and the light guiding layer is covered in the inner accommodating space, so as to achieve rapid assembly work and reduce assembly error.

According to the development of the technological era, various electronic and electrical products have been widely used in people's living or working environments, and applications such as desktop computers and notebook computers have brought people to life and The convenience of work, the processing of various documents, the editing of photos or graphics, the presentation, e-mail or the application of the Internet are all the patterns that people often use, and the application of computer products is more popular, and through the computer. When performing various electronic operations, the required data must be input through the keyboard for the computer host to process according to the data input by the keyboard. The keyboard also becomes an essential tool for computer operations, and is used in computers and various peripheral products. It is made in a light, thin, short, and small design concept, and the function is also improved. Especially the design of the notebook computer also reduces the overall thickness, so that the thickness of the screen and the keyboard are also reduced. The keyboard changed from the early large architecture to the thin disk mode, and the illuminator was set inside the keyboard for the keyboard. Peripheral key top or transmitted light, in order to For the keyboard application, the position of each button can be clearly distinguished, and the keyboard structure sequentially assembles the light shielding layer, the light guiding layer and the light reflecting layer on the bottom of the plurality of keys, and the plurality of illuminating body projection light sources are arranged by using the circuit board located on the light guiding layer. Reflecting upward by the reflective layer to cover the local position through the light shielding layer, that is, the light source can be concentrated and projected upward toward the bottom of each keyboard, so that light can be emitted on the surface or the periphery of the keyboard, and is currently on the light guiding layer of the keyboard and outside the flexible circuit board. It is necessary to separate the processing to cover the reflective layer and the light shielding layer, and then assemble a plurality of buttons above the light shielding layer. However, since the reflective layer and the light shielding layer are separately processed and assembled outside the light guiding layer, the manufacturing time is increased in addition to manufacturing separately. When the manufacturing cost is increased and the assembly operation is performed, the reflective layer and the light shielding layer must be accurately aligned on the two surfaces of the light guiding layer, and the difficulty in alignment and the degree of error in the loading operation are also increased, and it is often necessary to repeat The assembly and the alignment of the alignment can complete the assembly and processing, and the operation is quite time-consuming and labor-intensive, which increases the trouble of the staff. In order to facilitate the assembly and processing operations of the reflective layer and the light shielding layer, and the reflective layer and the light shielding layer are coated on the outside of the light guiding layer, the flexible circuit board is also coated, and the stacked coating may cause assembly. The thickness of the product increases, which is not conducive to the reduction of the thickness of the keyboard.

Therefore, how to solve the problem that the alignment of the reflective layer and the light shielding layer is difficult, time-consuming and labor-intensive, and the thickness of the reflective layer and the light shielding layer when the outer surface of the light guiding layer of the keyboard is assembled and the reflective layer and the light shielding layer are operated. It is also impossible to effectively reduce the lack of trouble and the troubles that are the direction of the relevant manufacturers engaged in this industry.

Therefore, in view of the above-mentioned problems and deficiencies, the creators have collected relevant information, evaluated and considered them through multiple parties, and through years of experience in the industry, through continuous trial and modification, they have designed such a mask. The reflective sheet is integrally formed, and is conveniently wrapped in A novel patented person who is outside the light guiding layer and does not cover the flexible circuit board, and can reduce the overall thickness of the backlight device.

The main purpose of the present invention is that the backlight device is provided with a plurality of slots in the light shielding sheet for the plurality of key positions of the alignment keyboard, and one or more reflective sheets are integrally formed on at least one side of the light shielding sheet. And forming a foldable edge at the integrally formed connection position of the light shielding sheet and the integrally formed reflective sheet, and one side surface of the reflective sheet is provided with a reflecting surface, which can be folded and attached to a side surface of the light shielding sheet for reflection The light can be folded to form a accommodating space inside the light-shielding sheet and the reflective sheet for covering the light-guiding layer, thereby achieving a quick-integrated light-shielding sheet and a reflection sheet, which is convenient for bending and applying the light-guiding layer. Folding the alignment to reduce the assembly error.

The secondary purpose of the present invention is that the light-shielding sheet of the backlight device has a long rectangular shape, and can be integrally formed with a long side (or a short side) with a reflection sheet, or on both sides of the light shielding sheet. The short side edges are integrally formed with a reflection sheet, and the integral molding processing operation can reduce the manufacturing time, reduce the manufacturing cost, and conveniently align the light shielding sheet and the reflection sheet on the outside of the light guiding layer, and can avoid The flexible circuit board reduces the thickness of the stacked backlight device for the circuit board to be fixed under one or more reflective sheets.

1‧‧ ‧ shading film

10‧‧‧ slots

101‧‧‧ ribs

11‧‧‧Long side

12‧‧‧ Short side

2‧‧‧reflector

20‧‧‧ accommodating space

21‧‧‧reflecting surface

22‧‧‧Folding

23‧‧‧Slots

3‧‧‧ keyboard

31‧‧‧ button

32‧‧‧Flexible feet

4‧‧‧Light guide layer

41‧‧‧Soft circuit board

42‧‧‧Lighting diode

The first picture is a three-dimensional exploded view of the creation.

The second picture is the floor plan of the creation.

The third drawing is a plan view of a preferred embodiment of the present invention.

The fourth figure is a side cross-sectional view of the creation.

The fifth drawing is an exploded perspective view of another embodiment of the present invention.

Figure 6 is a side cross-sectional view of another embodiment of the present invention.

In order to achieve the above objectives and effects, the technical means used in the creation, its construction, the method of implementation, etc., are described in detail in the preferred embodiment of the present invention, and the features and functions are as follows.

Please refer to the first, second, third and fourth figures, which are the exploded perspective view, plan view, plan view and side cross-sectional view of the preferred embodiment. It can be clearly seen from the figure that the author keyboard The backlight device comprises a light shielding sheet 1 and one or more reflective sheets 2, wherein the light shielding sheet 1 is provided with a plurality of hollow slots 10 on the surface, and the positions of the slots 10 are respectively matched with the preset keyboard 3. The plurality of buttons 31 are arranged in a position, and the light shielding sheet 1 is designed in a long rectangular shape, and the light shielding ribs 101 are formed around the respective slots 10 to form two opposite long side edges 11 and two opposite short side edges 12.

The one or more reflective sheets 2 have a reflecting surface 21 on one side surface.

When the respective members are manufactured and molded, the reflection sheet 2 is integrally formed by using at least one long side 11 and the short side 12 of the light shielding sheet 1 to form a foldable edge at the position where the reflection sheet 2 and the light shielding sheet 1 are engaged. 22, the reflective sheet 2 is bent from the position of the flange 22 and is adjacent to one side surface of the light shielding sheet 1, and an accommodation space 20 is formed between the light shielding sheet 1 and the reflection sheet 2, that is, the preset light guide can be covered. The layer 4, that is, the backlight unit of the present keyboard is integrally formed by the light shielding sheet 1, one or more reflective sheets 2.

Moreover, the light-shielding sheet 1 of the present invention can also be integrally formed with the reflection sheet 2 on the opposite short side edges 12, and the two reflection sheets 2 and the two short side edges 12 of the light shielding sheet 1 are connected to each other to form a space. The folded flaps 22 are provided for the two reflective sheets 2 to be bent from the two folded edges 22 to be adjacent to one side surface of the light shielding sheet 1 to facilitate the alignment of the two reflective sheets 2 and the light shielding sheet 1.

The above-mentioned light shielding sheet 1 and one or more reflective sheets 2 are integrally formed, which can reduce the time required for the process and reduce the manufacturing cost, and facilitate the folding of one or more reflective sheets 2 by one or more. When the 22 position is bent, one or more reflective sheets 2 can be quickly brought close to one side surface of the light shielding sheet 1, and the alignment offset or skew is not easily generated, and the light shielding sheet 1 can be used with one piece or one piece. The accommodating space 20 formed between the reflective sheets 2 is used to cover the predetermined light guiding layer 4, and the position of the flexible circuit board 41 disposed on the light guiding layer 4 is avoided, and the flexible circuit board 41 is fixed on the flexible circuit board 41. One or more of the reflective sheets 2 are below, and the overall thickness of the laminated backlight device is not increased, and the design concept of light, thin, short, and small electronic products can be met.

Please refer to the first, fifth and sixth figures, which are an exploded perspective view of the present invention, an exploded perspective view of another embodiment, and a side cross-sectional view of another embodiment, which can be clearly seen from the figure. The backlight device of the present invention, the one or more reflective sheets 2 and the preset light guiding layer 4 are formed, and the slot 21 is provided on one or more reflective sheets 2, The plurality of light-emitting diodes 42 on the flexible circuit board 41 pass through the slot 23 to project the light source to the light guiding layer 4. The preset keyboard 3 can be assembled above the backlight device, and the plurality of slots 10 for the light shielding sheet 1 are provided. The positions are respectively located at the positions of the buttons 31 of the preset keyboard 3, and are fixed in the slot 10 by the elastic legs 32 (scissors feet) of the buttons 31, and the plurality of slots 10 are provided. The peripheral ribs 101 are respectively disposed below the gaps located adjacent to the plurality of buttons 31, and can shield the light source projected from the plurality of light-emitting diodes (LEDs 42) on the flexible circuit board 41 by the predetermined light guiding layer 4. Through the reflection of the reflective sheet 2 and the guiding by the light guiding layer 4, the light source is projected from each slot 31 of each slot 10, and the light source can be concentrated to make the surface of each button 31 clearer and brighter. And the one or more reflective sheets 2 are bent at the position of the folded edge 22, and the reflective sheet 2 is adjacent to the side surface of the light shielding sheet 1, so that the light shielding sheet 1 and the reflection sheet 2 can be quickly formed by alignment, and then the light shielding sheet 1 is formed. The predetermined light guiding layer 4 can be completely covered with the accommodating space 20 formed by the reflective sheet 2, which can accelerate the assembly work and improve the product yield of the assembly work.

Therefore, the above description is only a preferred embodiment of the present invention, and thus is not limited to the scope of the patent of the present invention. The backlight device of the present keyboard can be on the long side 11 or the short side of at least one side of the light shielding sheet 1. The side 12 is integrally formed with one or more reflective sheets 2, and one or more reflective sheets 2 and the light shielding sheet 1 can be bent at the folded edge 22 to be bent to bring the reflective sheet 2 close to the light shielding sheet 1. The surface of one side is covered with the accommodating space 20 formed in the interior to cover the predetermined light guiding layer 4, so that the visor 1 can be integrally formed with one or more reflective sheets 2, and the reflective sheet 2 can be quickly formed. The bending function is close to the fast alignment function of the visor 1 , and the visor 1 and the reflective sheet 2 are coated on the outside of the preset light guiding layer 4 to avoid the flexible circuit board 41 to effectively reduce the overall thickness of the laminated backlight device. And in conjunction with the assembly of the preset keyboard 3, in line with the appeal of the electronic product towards light, thin, short and small design, the structure and device that can achieve the aforementioned effects should be covered by this creation, such simple modification and equivalent Structural changes should be included in the same reason Within the scope of this patent, it is given to Chen Ming.

Therefore, this creation is designed for the backlight of the keyboard. At least one long side or short side of the light shielding sheet is integrally formed with one or more reflective sheets, and one or more reflective sheets are connected to the light shielding sheet to form a folded edge for the reflective sheet to be bent. After folding, it is close to one side surface of the light shielding sheet, and then covers the preset light guiding layer in the accommodating space formed by the light shielding sheet and the reflective sheet portion, thereby achieving rapid and integral forming of the light shielding sheet and one or more reflective sheets. As the main protection focus, in order to reduce the manufacturing cost of the visor and one or more reflective sheets, only the visor and the reflective sheet can be quickly bent and wrapped around the preset light guiding layer, thereby accelerating the assembly operation and reducing The advantage of the overall thickness of the assembled backlight device is that the preset keyboard is assembled above the plurality of slots of the light shielding sheet, and the concentrated light source can be projected onto the surface of each button by the position of each slot, but only the above For the preferred embodiment of the present invention, it is not intended to limit the scope of the patent of the creation, so any simple modification and equivalent structural changes made by the use of the present specification and the schema should be Li included within the scope of the present writing, the engagement to Chen.

In summary, the backlight device of the above-mentioned keyboard is actually capable of achieving its efficacy and purpose in practical application and implementation. Therefore, the creation is a practical and excellent research and development, and is in accordance with the requirements of the new patent application. To file an application, I hope that the trial committee will grant the case as soon as possible to protect the creators' hard work in research and development. If there is any doubt in the ruling committee, please do not hesitate to give instructions. The creators will try their best to cooperate with them.

1‧‧ ‧ shading film

10‧‧‧ slots

101‧‧‧ ribs

11‧‧‧Long side

12‧‧‧ Short side

2‧‧‧reflector

21‧‧‧reflecting surface

22‧‧‧Folding

23‧‧‧Slots

Claims (5)

A backlight device for a keyboard, comprising: a light shielding film, one or more reflective sheets and a light guiding layer, wherein: the light shielding film is provided with a plurality of through holes, and the one or more reflective sheets are integrally formed and connected At least one side of the light shielding sheet is provided with a folded edge integrally formed with at least one side of the light shielding sheet, and one side surface of the reflective sheet is provided with a reflecting surface which is folded and attached to the back surface of the light shielding sheet for reflecting light. The light shielding sheet and the one or more reflection sheets are closely folded by the flange, and an accommodation space for covering the light guiding layer is formed inside. The backlight device of the keyboard of claim 1, wherein the light shielding film has a long rectangular shape, and a reflective sheet is integrally formed on one long side. The backlight device for a keyboard according to the first aspect of the invention, wherein the light shielding sheet is formed in a rectangular shape, and a reflective sheet is integrally formed on the short sides of the two sides. The backlight device of the keyboard of claim 1, wherein the one or more reflective sheets are provided with a circuit board having a plurality of light emitting diodes (LEDs), and one or more reflective sheets are provided thereon. A plurality of light-emitting diodes pass through the slots. The backlight device of the keyboard of claim 1, wherein the plurality of slot positions of the visor are for assembling a plurality of keys of the preset keyboard with elastic legs.