Diffusion film structure for preventing key optical crosstalk
By setting the button film area and connecting ribs in the diffusion film, and bonding the diffusion film in the back glue and protective film, the problems of impurity of color and light-stitching in the key area in the prior art are solved, and the pure color light effect of each key film area and the effect of reducing the light-stitching phenomenon is achieved.
Patent Information
- Application Number
- CN202421412333.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-20
- Publication Date
- 2025-05-02
- Estimated Expiration
- 2034-06-20
AI Technical Summary
In the prior art, when the diffusion film is laid on the multi-key panel, light of different colors causes light of different colors to diffuse from one key area to another through the diffusion film, resulting in impure color light in the key area and a series of light occurs.
A diffusion film structure that prevents the light of the buttons is designed. By setting at least two button film regions and at least one connecting rib in the diffusion film, gaps are set between each button film region, connecting ribs connect two button film regions, and adhering the diffusion film in the back glue and the protective film.
By setting the gap and connecting ribs, the series of light in the key film area is avoided, so that the color light in each key film area is solid, which weakens the series of light, and further weakens the series of light by screen printing on the connecting ribs.
Smart Images
Figure CN222826275U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of display screens, in particular to a diffusion film structure for preventing keystroke crosstalk. Background Art
[0002] At present, the vehicle cover and touch screen have translucent buttons, and a backlight is set under the button to provide illumination for the button. In order to make the button display evenly translucent, a diffusion film is usually added between the button and the backlight. The diffusion film is generally attached to the cover or touch screen button with adhesive. For panels with more buttons, different colors of button backlights are usually set to achieve different colors of button display to enhance aesthetics and recognition. However, since the diffusion film is laid in one piece, different colors of light will diffuse from one button area to another through the diffusion film, resulting in the color light of the button area is not pure enough and the phenomenon of cross-light occurs. Utility Model Content
[0003] The utility model aims to overcome the shortcomings of the prior art and provide a diffusion film structure for preventing key-to-key crosstalk.
[0004] The purpose of this utility model is achieved through the following technical solutions:
[0005] A diffusion film structure for preventing key crosstalk, comprising: a diffusion film, a backing glue and a protective film; the diffusion film comprises at least two key membrane areas and at least one connecting rib, the connecting rib is used to connect the two key membrane areas, and a gap is arranged between each key membrane area; the diffusion film is bonded to the protective film through the backing glue.
[0006] In one of the embodiments, a black ink layer is screen-printed on the connecting rib.
[0007] In one embodiment, the number of the connecting rib is one, the number of the key membrane areas is two, and one connecting rib is transversely arranged at the gap to connect the two key membrane areas.
[0008] In one embodiment, the number of the connecting ribs is two, the number of the key membrane areas is two, the two connecting ribs are transversely arranged at the gap, and the two connecting ribs are arranged at the upper and lower sides of the two key membrane areas.
[0009] In one embodiment, the length of the protection film is greater than the length of the diffusion film.
[0010] In one embodiment, the backing adhesive is consistent with the size of the diffusion membrane.
[0011] In one embodiment, the width of the connecting rib is smaller than the width of the key membrane area.
[0012] In one embodiment, the key membrane areas are arranged in alignment.
[0013] In one embodiment, the key membrane area includes a light-transmitting area and a non-light-transmitting area, and the non-light-transmitting area is arranged around the edge of the light-transmitting area.
[0014] In one embodiment, the protective film is a release film.
[0015] Compared with the prior art, the utility model has at least the following advantages:
[0016] 1. The diffusion film structure for preventing key-to-key cross-lighting of the utility model is provided with a diffusion film, adhesive and a protective film. The diffusion film includes at least two key film areas and at least one connecting rib, each key film area is hollowed out, the connecting rib connects the two key film areas, the gap between each key film area can prevent the light from each key film area from cross-lighting, so that the color light of each key film area is pure color, and the size of the connecting rib is small, it is difficult to diffuse more light, and the cross-lighting phenomenon is reduced.
[0017] 2. Print a layer of black ink on the connecting ribs to further reduce the cross-light phenomenon. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for use in the embodiments are briefly introduced below.
[0019] Figure 1 It is a schematic structural diagram of a diffusion membrane in one embodiment of the utility model;
[0020] Figure 2 Another schematic diagram of the structure of the diffusion membrane in one embodiment of the utility model;
[0021] Figure 3 It is a structural schematic diagram of a diffusion film structure for preventing key-to-key crosstalk in one embodiment of the utility model.
[0022] Reference numerals:
[0023] Diffusion film 10 , key membrane area 11 , light-transmitting area 111 , non-light-transmitting area 112 , connecting ribs 12 , gaps 13 , adhesive backing 20 , protective film 30 , and black ink layer 40 . DETAILED DESCRIPTION
[0024] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings.
[0025] This application proposes a diffusion film structure to prevent keystroke crosstalk. Please refer to Figure 1 and Figure 3, including: a diffusion film 10, a back glue 20 and a protective film 30. Both sides of the back glue 20 are sticky, and the protective film 30 is used to protect the diffusion film 10. The diffusion film 10 can diffuse light to make the light more uniform. The diffusion film 10 is bonded to the protective film 30 through the back glue 20. In electronic equipment, it is usually used in light-transmitting buttons. When in use, the staff will tear off the protective film 30 and attach it to the bottom of the cover plate or touch screen button through the side of the exposed back glue 20. The diffusion film 10 includes at least two button membrane areas 11 and at least one connecting rib 12. The button membrane areas 11 are hollowed out, and the connecting rib 12 connects the two button membrane areas 11. The gap 13 between the button membrane areas 11 can avoid the light of each button membrane area 11 from having a cross-light phenomenon, so that the color light of each button membrane area 11 is pure color, and the size of the connecting rib 12 is small, it is difficult to diffuse more light, and the cross-light phenomenon is reduced. Preferably, the protective film 30 is a release film.
[0026] See also Figure 1 Specifically, the number of the connecting rib 12 is one, and the number of the key membrane areas 11 is two. One connecting rib 12 is arranged transversely at the gap 13 to connect the two key membrane areas 11. Figure 2 In another embodiment, the number of connecting ribs 12 is two, and the number of key membrane areas 11 is two. The two connecting ribs 12 are arranged horizontally at the gap 13 to connect the two key membrane areas 11, and the two connecting ribs 12 are arranged on the upper and lower sides of the two key membrane areas 11 to prevent the key membrane areas 11 on the diffusion membrane 10 from being too loose, so that the key membrane areas 11 are easier to align with the keys or the cover plate, and the connection stability between the key membrane areas 11 is more reliable. For further information, please refer to Figure 3 The black ink layer 40 is printed on the connecting rib 12. The black ink layer 40 is black and has poor light transmittance, which can further reduce the cross-light phenomenon. In addition, the width of the connecting rib 12 is smaller than the width of the key membrane area 11. Since the area of the connecting rib 12 is small, the diffusion of the color light of the backlight on the connecting rib 12 is reduced.
[0027] It should be noted that the number of key membrane areas 11 depends on the number of keys, one key membrane area 11 corresponds to one key, and the number of connecting ribs 12 depends on the number of key membrane areas 11. The connecting ribs 12 connect the key membrane areas 11 in the above manner.
[0028] In one embodiment, since the length of the protective film 30 is greater than that of the diffusion film 10 , the worker can bend the protective film 30 to make the diffusion film 10 tilt, thereby making it easier to tear off the diffusion film 10 .
[0029] Furthermore, the size of the adhesive backing 20 is consistent with that of the diffusion film 10 , so that the bonding area between the diffusion film 10 and the cover plate or the touch screen button is maximized, and the bonding reliability is stronger.
[0030] Furthermore, the key membrane areas 11 are aligned so that each key membrane area 11 is easier to align with the key or cover plate. The diffusion film 10 only needs to be straightened along the connecting ribs 12, thereby improving the accuracy of attachment.
[0031] Also, see Figure 1 The key membrane area 11 includes a light-transmitting area 111 and a non-light-transmitting area 112, and the non-light-transmitting area 112 is arranged around the edge of the light-transmitting area 111. The light emitted by the light source of the backlight passes through the light-transmitting area 111 and appears on the key, making the light on the key more uniform. A black ink layer 40 is silk-screened on the side of the non-light-transmitting area 112 and the key membrane area 11, so that the side of the non-light-transmitting area 112 and the key membrane area 11 is not light-transmitting, so that the light of each key membrane area 11 does not refract and reflect each other through the side.
[0032] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.
Claims
1. A diffusion film structure for preventing key-to-key crosstalk, characterized in that: include: Diffusers, adhesives and protective films; The diffusion film includes at least two key membrane areas and at least one connecting rib, wherein the connecting rib is used to connect the two key membrane areas, and a gap is provided between each of the key membrane areas; the diffusion film is bonded to the protective film through the adhesive.
2. The anti-key-crosstalk diffusion film structure according to claim 1, characterized in that: A black ink layer is silk-screen printed on the connecting ribs.
3. The anti-key-crosstalk diffusion film structure according to claim 1, characterized in that: The number of the connecting rib is one, the number of the key membrane areas is two, and one connecting rib is transversely arranged at the gap to connect the two key membrane areas.
4. The anti-key-crosstalk diffusion film structure according to claim 1, characterized in that: The number of the connecting ribs is two, the number of the key membrane areas is two, the two connecting ribs are arranged transversely at the gap, and the two connecting ribs are arranged at the upper and lower sides of the two key membrane areas.
5. The anti-key-crosstalk diffusion film structure according to claim 1, characterized in that: The length of the protection film is greater than the length of the diffusion film.
6. The anti-key-crosstalk diffusion film structure according to claim 1, characterized in that: The size of the back glue is consistent with that of the diffusion film.
7. The anti-key-crosstalk diffusion film structure according to claim 1, characterized in that: The width of the connecting rib is smaller than the width of the key membrane area.
8. The anti-key-crosstalk diffusion film structure according to claim 1, characterized in that: The key membrane areas are arranged in alignment.
9. The anti-key-crosstalk diffusion film structure according to claim 1, characterized in that: The key membrane area includes a light-transmitting area and a non-light-transmitting area, and the non-light-transmitting area is arranged around the edge of the light-transmitting area.
10. The anti-key-crosstalk diffusion film structure according to claim 1, characterized in that: The protective film is a release film.