A full privacy touch screen assembly

Abstract

The utility model relates to a kind of full peep-proof touch screen assembly, including the touch screen, peep-proof film and display module being sequentially stacked, peep-proof film is attached on the back of touch screen by optical glue, peep-proof film includes sequentially from the side close to touch screen to the side away from touch screen: first honeycomb louver layer, high refractive index metal oxide layer, second honeycomb louver layer, low refractive index polymer layer, third honeycomb louver layer.This new patent, peep-proof film is built-in in the back of touch screen, user is contacted when operating the glass substrate of touch screen, avoid the plastic touch of traditional peep-proof film, promote the use experience of high-end equipment.Glass surface hardness is much higher than peep-proof film polymer layer, reduce scratch risk.Through the alternating design of three honeycomb louver layers and high-low refractive layer, light occurs multiple refraction and reflection between multiple interfaces, realize all-round peep-proof.Paste reduction light scattering path on the back of peep-proof film, compared with surface pasting film scheme luminance loss reduces.

Description

Technical Field

[0001] This utility model relates to the field of display module technology, and more specifically, to a fully privacy-protected touchscreen component. Background Technology

[0002] With the development of electrification, intelligence, connectivity, and sharing in the automotive industry, in-vehicle displays are also evolving towards larger sizes, interconnected screens, and multi-screen displays. Multi-screen displays include the instrument panel, central control unit, and passenger entertainment screen. However, the use of the passenger entertainment screen inevitably interferes with the driver's experience, and its varied usage scenarios also inevitably result in reflections on the windshield, further distracting the driver. Therefore, an in-vehicle module with 360-degree full-view privacy protection is essential. Traditional privacy films have a louvered structure. Light from the screen, after passing through the privacy film, forms a specific viewing angle in the left and right directions. The user can only see the screen content within this viewing angle; outside this angle, it is completely invisible. However, due to the louvered structure, traditional privacy films only provide privacy in the left and right directions, not the top and bottom. Therefore, they cannot provide 360-degree full privacy protection. Utility Model Content

[0003] The purpose of this invention is to propose a fully privacy-protected touchscreen component, which aims to provide 360-degree privacy protection both vertically and horizontally.

[0004] Specifically, the technical solution of this utility model is as follows: a privacy screen component, comprising a touch screen, a privacy film and a display module stacked in sequence. The privacy film is attached to the back of the touch screen with optical adhesive. The privacy film includes, from the side closer to the touch screen to the side farther away from the touch screen, a first honeycomb louver layer, a high refractive index metal oxide layer, a second honeycomb louver layer, a low refractive index polymer layer and a third honeycomb louver layer.

[0005] As a preferred technical solution, the material of the high refractive index metal oxide layer is selected from TiO2, ZnO or a combination thereof, and the thickness is 50-200nm.

[0006] As a preferred technical solution, the material of the low refractive index polymer layer is selected from PC, PMMA, PET or a combination thereof, and the thickness is 0.1-0.5 mm.

[0007] As a preferred technical solution, the thickness of the first honeycomb louver layer, the second honeycomb louver layer, and the third honeycomb louver layer is 0.05-0.2mm.

[0008] As a preferred technical solution, the optical adhesive is OCA optical adhesive with a thickness of 0.1-0.3mm.

[0009] As a preferred technical solution, the total thickness of the privacy film is 0.4-1.2mm.

[0010] As a preferred technical solution, the touch screen is a capacitive touch screen, including a glass substrate and a transparent conductive layer disposed on the glass substrate.

[0011] As a preferred technical solution, the display module is an LCD display module or an OLED display module.

[0012] As a preferred technical solution, a second optical adhesive layer is also provided between the privacy film and the display module.

[0013] As a preferred technical solution, the second optical adhesive layer is OCA optical adhesive or LOCA liquid optical adhesive, with a thickness of 0.1-0.3 mm.

[0014] The beneficial effects of this invention are as follows: In this patented invention, the privacy film is built into the back of the touchscreen, so the user contacts the glass substrate of the touchscreen during operation, avoiding the plastic feel of traditional privacy films and improving the user experience of high-end devices. The surface hardness of the glass is much higher than that of the polymer layer of the privacy film, reducing the risk of scratches.

[0015] Through the alternating design of three layers of honeycomb louvers and high and low refractive index layers, light undergoes multiple refractions and reflections between the multiple interfaces, achieving all-round privacy protection.

[0016] The privacy film is back-mounted, reducing the light scattering path and resulting in less brightness loss compared to surface-mounted film solutions. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A schematic diagram of a fully privacy-protected touchscreen component stacking structure proposed in this embodiment of the present invention. Figure 1 ;

[0019] Figure 2 This is a schematic diagram of the anti-spy film stacking structure proposed in an embodiment of the present invention;

[0020] Figure 3 A schematic diagram of a fully privacy-protected touchscreen component stacking structure proposed in this embodiment of the present invention. Figure 2 .

[0021] Figure labeling: Touch screen 1; Privacy film 2; First honeycomb louver layer 21; High refractive index metal oxide layer 22; Second honeycomb louver layer 23; Low refractive index polymer layer 24; Third honeycomb louver layer 25; Display module 3; Adhesive frame 31; Optical adhesive 4; Second optical adhesive layer 5; Frame foam 6. Detailed Implementation

[0022] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided to make this application more comprehensive and complete, and to fully convey the concept of the exemplary embodiments to those skilled in the art.

[0023] Furthermore, the described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. Numerous specific details are provided in the following description to give a thorough understanding of embodiments of this application. However, those skilled in the art will recognize that the technical solutions of this application can be practiced without one or more of the specific details, or other methods, components, apparatuses, steps, etc., can be employed. In other instances, well-known methods, apparatuses, implementations, or operations are not shown or described in detail to avoid obscuring various aspects of this application.

[0024] The block diagrams shown in the accompanying drawings are merely functional entities and do not necessarily correspond to physically independent entities. That is, these functional entities can be implemented in software, in one or more hardware modules or integrated circuits, or in different network and / or processor devices and / or microcontroller devices.

[0025] The flowcharts shown in the accompanying drawings are merely illustrative and do not necessarily include all content and operations / steps, nor do they necessarily have to be performed in the described order. For example, some operations / steps can be broken down, while others can be combined or partially combined; therefore, the actual execution order may change depending on the specific circumstances.

[0026] It should be noted that "multiple" as mentioned in this article refers to two or more. Example

[0027] like Figure 1-2 As shown, this embodiment presents a privacy screen 1 assembly, which includes a touch screen 1, a privacy film 2, and a display module 3 stacked in sequence. The privacy film 2 is attached to the back of the touch screen 1 by optical adhesive 4. The privacy film 2 includes, from the side closer to the touch screen 1 to the side farther away from the touch screen 1, a first honeycomb louver layer 21, a high refractive index metal oxide layer 22, a second honeycomb louver layer 23, a low refractive index polymer layer 24, and a third honeycomb louver layer 25.

[0028] Preferably, the material of the high refractive index metal oxide layer 22 is selected from TiO2, ZnO or a combination thereof, and the thickness is 50-200 nm.

[0029] Preferably, the low-refractive-index polymer layer 24 is made of PC, PMMA, PET or a combination thereof, and has a thickness of 0.1-0.5 mm.

[0030] Preferably, the thickness of the first honeycomb louver layer 21, the second honeycomb louver layer 23 and the third honeycomb louver layer 25 is 0.05-0.2 mm.

[0031] Preferably, the optical adhesive 4 is OCA optical adhesive 4 with a thickness of 0.1-0.3 mm.

[0032] Preferably, the total thickness of the privacy film 2 is 0.4-1.2 mm.

[0033] Preferably, the touch screen 1 is a capacitive touch screen 1, including a glass substrate and a transparent conductive layer disposed on the glass substrate.

[0034] Preferably, the display module 3 is an LCD display module 3 or an OLED display module 3.

[0035] Preferred, such as Figure 3 As shown, it also includes a second optical adhesive layer 5 disposed between the privacy film 2 and the display module 3. This layer connects the privacy film 2 and the display module 3. Specifically, a ring of framed foam 6 is also disposed around the second optical adhesive layer 5, connecting the adhesive frame 31 of the display module 3.

[0036] Preferably, the second optical adhesive layer 5 is OCA optical adhesive 4 or LOCA liquid optical adhesive 4, with a thickness of 0.1-0.3 mm.

[0037] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A fully privacy-protected touchscreen assembly, characterized in that, The device includes a touch screen, a privacy film, and a display module stacked in sequence. The privacy film is attached to the back of the touch screen with optical adhesive. The privacy film includes, from the side closest to the touch screen to the side furthest from the touch screen, a first honeycomb louver layer, a high refractive index metal oxide layer, a second honeycomb louver layer, a low refractive index polymer layer, and a third honeycomb louver layer.

2. The fully privacy-protected touchscreen assembly according to claim 1, characterized in that, The material of the high refractive index metal oxide layer is selected from TiO2, ZnO or a combination thereof, and the thickness is 50-200 nm.

3. The fully privacy-protected touchscreen assembly according to claim 2, characterized in that, The low-refractive-index polymer layer is made of PC, PMMA, PET, or a combination thereof, and has a thickness of 0.1-0.5 mm.

4. The fully privacy-protected touchscreen assembly according to claim 1, characterized in that, The thickness of the first honeycomb louver layer, the second honeycomb louver layer, and the third honeycomb louver layer is 0.05-0.2 mm.

5. The fully privacy-protected touchscreen assembly according to claim 1, characterized in that, The optical adhesive is OCA optical adhesive with a thickness of 0.1-0.3 mm.

6. The fully privacy-protected touchscreen assembly according to claim 1, characterized in that, The total thickness of the privacy film is 0.4-1.2 mm.

7. The fully privacy-protected touchscreen assembly according to claim 1, characterized in that, The touchscreen is a capacitive touchscreen, comprising a glass substrate and a transparent conductive layer disposed on the glass substrate.

8. The fully privacy-protected touchscreen assembly according to claim 1, characterized in that, The display module is either an LCD display module or an OLED display module.

9. The fully privacy-protected touchscreen assembly according to any one of claims 1-8, characterized in that, It also includes a second optical adhesive layer disposed between the privacy film and the display module.

10. The fully privacy-protected touchscreen assembly according to claim 9, characterized in that, The second optical adhesive layer is OCA optical adhesive or LOCA liquid optical adhesive, with a thickness of 0.1-0.3 mm.

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