Anti-peeping display module
By adjusting the display's viewing range and raster height, combined with privacy film and anti-glare layer design, the reflection problem of in-vehicle displays has been solved, improving the driver's field of vision and ensuring driving safety.
Patent Information
- Application Number
- CN202421947341.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-12
- Publication Date
- 2025-10-31
- Estimated Expiration
- 2034-08-12
AI Technical Summary
Existing privacy films cannot effectively prevent light from reflecting off the windshield and affecting the driver's vision when used with in-vehicle displays.
By adjusting the display's viewing area and raster height, combined with privacy film and anti-glare layer design, the light is ensured to be more collimated and scattering behind the display is reduced, while the brightness of the non-viewable area is reduced to minimize reflections.
It reduces or eliminates reflections on the car windows, improving the driver's visibility and ensuring driving safety.
Smart Images
Figure CN223501503U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of display module technology, and in particular to a privacy display module. Background Technology
[0002] With the development of intelligent driving in electric vehicles and consumers' increasing demands for car interiors, in-vehicle displays are becoming larger and more numerous. When ambient light is weak, such as at dusk or night, the display's light intensity relative to the environment is strong, creating reflections on the windshield or windows, affecting the driver's ability to perceive road conditions. As shown in the image, the navigation display screen is at an angle to the windshield, creating a reflected image. To eliminate or reduce these reflections, a privacy film, or film that controls light and viewing angle, is typically added to the display.
[0003] After the privacy film is applied, the visible range of the display module is 30-35 degrees above and below the normal. The maximum brightness of its privacy range is generally 10-20% of the vertical brightness. The vertical brightness requirement is usually 1000 nits, which means that there is still 100-200 nits of brightness within the privacy range. Therefore, it can still form a reflection on the car window or windshield, thus affecting the driver's driving. Utility Model Content
[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a privacy display module.
[0005] The objective of this utility model is achieved through the following technical solution:
[0006] A privacy display module includes: a display screen, a backlight, and a privacy film disposed between the display screen and the backlight. The privacy film is used to prevent the display screen from being viewed. The visible range of the display screen is 20% above and below the normal line on the display screen, and the area of the display screen other than the visible range is the privacy protection range.
[0007] In one embodiment, the normal is located at the center of the display screen and is perpendicular to the display screen.
[0008] In one embodiment, the maximum brightness of the privacy protection range is 5% of the brightness of the display screen in the normal direction.
[0009] In one embodiment, the display screen has a brightness of 1000 nits in the normal direction, and the display screen has a maximum brightness of 50 nits in the privacy protection range.
[0010] In one embodiment, the privacy film includes an ink layer and protective layers disposed on the upper and lower sides of the ink layer, the protective layers being used to protect and fix the orientation of the privacy film.
[0011] In one embodiment, the ink layer is provided with a plurality of gratings, and the plurality of gratings form a louver-like ink layer.
[0012] In one embodiment, the grating is arranged in a trapezoidal shape.
[0013] In one embodiment, the height of the grating is 140 μm.
[0014] In one embodiment, the upper surface of the display screen is provided with an anti-glare layer, which is used to prevent strong external light from reflecting onto the display screen and making it difficult for the driver to see the screen.
[0015] In one embodiment, the thickness of the anti-dizziness layer is 15μm-30μm.
[0016] Compared with the prior art, the present invention has at least the following advantages:
[0017] This utility model discloses an anti-peeping display module. By changing the height of the grating and the visible range of the display screen, the light emitted from the display screen is more accurate. The more accurate light is less scattered after passing through the display screen, which can meet the anti-peeping requirements of the display screen and the passenger seat at about 20 degrees to avoid reflections on the car window, which would affect the driver's judgment. Attached Figure Description
[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the embodiments will be briefly described below.
[0019] Figure 1 A schematic diagram of the stacked structure of a privacy display module provided by this utility model;
[0020] Figure 2 A schematic diagram of the vertical viewing angle of the display screen in a privacy display module provided by this utility model;
[0021] Figure 3 This is a schematic diagram of the stacked structure of the privacy film in a privacy display module provided by this utility model.
[0022] Figure descriptions: 10, display screen; 20, backlight; 30, privacy film; 31, protective layer; 32, ink layer; 321, grating; 40, normal; 50, visible range; 60, privacy range; 70, anti-glare layer. Detailed Implementation
[0023] To facilitate understanding of this utility model, a more comprehensive description of this utility model will be given below with reference to the accompanying drawings.
[0024] A privacy display module, as shown in the reference Figure 1 It includes a display screen 10, a backlight 20, and a privacy film 30 disposed between the display screen 10 and the backlight 20. The privacy film 30 is disposed between the display screen 10 and the backlight 20 to prevent the display screen 10 from being viewed and to reduce the impact of the light intensity of the display screen 10 hitting the windshield and causing a reflection on the driver.
[0025] Reference Figure 2 The visible range 50 of the display screen 10 is the range within 20% above and below the normal 40 on the display screen 10. The area of the display screen 10 excluding the visible range 50 is the privacy protection range 60. The normal 40 is located at the center of the display screen 10 and is perpendicular to the display screen 10. In the vertical plane of the normal 40, the visible range 50 is the range within 20% above and below the normal 40, using the normal 40 as a reference.
[0026] Furthermore, referring to Figure 2 The maximum brightness of the privacy protection range 60 is 5% of the brightness of the display 10 in the direction of the normal 40. The brightness of the display 10 in the direction of the normal 40 is 1000 nits, and the maximum brightness in the privacy protection range 60 is 50 nits.
[0027] Reference Figure 3 The privacy film 30 includes an ink layer 32 and protective layers 31 disposed on the upper and lower sides of the ink layer 32. The protective layers 31 are used to protect and fix the orientation of the privacy film 30. The ink layer 32 is the main layer that provides the privacy effect. Multiple gratings 321 are disposed within the ink layer 32, forming a louver-like ink layer 32. The gratings 321 are trapezoidal in shape and are made of ink. Multiple gratings 321 form a louver-like ink layer 32 to achieve the privacy effect.
[0028] Furthermore, referring to Figure 3 The height of the grating 321 is 140μm. The privacy angle of the privacy film 30 is determined by the pitch and height of the grating 321, i.e., the ink. A smaller pitch results in a smaller viewing angle and a larger privacy angle, while a higher ink height results in a smaller viewing angle and a larger privacy angle. Furthermore, a smaller ink height and pitch lead to a higher ink area ratio, more light blocking, and lower brightness. Typically, the height of the grating 321, i.e., the ink, is 100μm; in this embodiment, the grating 321 is 140μm high, thus maximizing the privacy angle of the display screen 10.
[0029] Reference Figure 3 By changing the height of the grating 321 and the viewing range 50 of the display screen 10, the light emitted from the display screen 10 is made more accurate. The more accurate light is less scattered after passing through the display screen 10, which can meet the anti-peeping requirements of the display screen 10 and the passenger seat at about 20 degrees to avoid reflections on the car window, which would affect the driver's judgment.
[0030] Furthermore, referring to Figure 1 The upper surface of the display screen 10 is provided with an anti-glare layer 70, which is used to prevent strong external light from reflecting onto the display screen 10 and making it difficult for the driver to see the screen.
[0031] Furthermore, referring to Figure 1 The thickness of the anti-glare layer 70 is 15μm-30μm.
[0032] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.
Claims
1. A privacy display module, characterized in that, include: The display screen (10), the backlight (20), and the privacy film (30) disposed between the display screen (10) and the backlight (20) are provided. The privacy film (30) is used to prevent the display screen (10) from being viewed. The visible range (50) of the display screen (10) is 20% above and below the normal line (40) on the display screen (10). The area of the display screen (10) other than the visible range (50) is the privacy range (60).
2. The privacy display module according to claim 1, characterized in that, The normal (40) is located at the center of the display screen (10) and is perpendicular to the display screen (10).
3. The privacy display module according to claim 2, characterized in that, The maximum brightness of the privacy protection area (60) is 5% of the brightness of the display screen (10) in the direction of the normal (40).
4. The privacy display module according to claim 3, characterized in that, The brightness of the display screen (10) in the direction of the normal (40) is 1000 nits, and the maximum brightness of the display screen (10) in the privacy protection range (60) is 50 nits.
5. A privacy display module according to claim 4, characterized in that, The privacy film (30) includes an ink layer (32) and protective layers (31) respectively disposed on the upper and lower sides of the ink layer (32). The protective layers (31) are used to protect and fix the orientation of the privacy film (30).
6. The privacy display module according to claim 5, characterized in that, The ink layer (32) is provided with a plurality of gratings (321), and the plurality of gratings (321) form a louver-like ink layer (32).
7. A privacy display module according to claim 6, characterized in that, The grating (321) is arranged in a trapezoidal shape.
8. A privacy display module according to claim 7, characterized in that, The height of the grating (321) is 140 μm.
9. A privacy display module according to claim 1, characterized in that, The upper surface of the display screen (10) is provided with an anti-glare layer (70), which is used to prevent strong external light from reflecting onto the display screen (10) and making it difficult for the driver to see the screen.
10. A privacy display module according to claim 9, characterized in that, The thickness of the anti-dizziness layer (70) is 15μm-30μm.