Vehicle-mounted multi-screen integrated black display device

Abstract

This utility model relates to an integrated black display device for multi-screen vehicles, comprising: a TFT display screen, a first OCA layer, a touch sensor layer, a second OCA layer, a cover plate, an electrochromic thin film layer, and an optical coating, all stacked together; wherein a white glass support layer is provided between the electrochromic thin film layer and the optical coating for support; or, an ITO heating layer is provided between the cover plate and the electrochromic thin film layer. This utility model achieves an integrated black effect for multi-screen vehicles in the off state through a multi-layer structure design combining a flexible electrochromic thin film layer with an ITO heating layer and a white glass support layer. The composite structure of flexible PET substrate + X / Y axis grating layer + dual ITO conductive layer + electrochromic material allows for adjustable light transmittance of the film when energized, and a uniform black state when off, effectively eliminating color differences between different displays (such as instrument panel, central control screen, and passenger entertainment screen).

Description

Technical Field

[0001] This utility model relates to the field of display screen technology, and more specifically, to a vehicle-mounted multi-screen integrated black display device. 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 designs. Multi-screen displays are currently a trend and will become a standard component in mid-to-high-end in-vehicle displays. However, a current pain point in the industry is the poor overall black level across multiple screens. Color differences exist between screens and between screens and their respective ink areas when the screens are off. In-vehicle multi-screen displays include instrument panels, central control screens, and passenger entertainment screens. Due to different technologies, the reflectivity and hue values ​​of different screens vary, making it difficult to achieve a uniform black level by simply adjusting the ink area. Currently, even when the screen is off, the display area of ​​the screen and the ink area of ​​its cover plate still show differences in display quality. Utility Model Content

[0003] The purpose of this invention is to propose an in-vehicle multi-screen integrated black display device, which aims to solve the problem that the display area and the ink area of ​​the display screen still have different display effects when the screen is off.

[0004] Specifically, the technical solution of this utility model is as follows: a vehicle-mounted multi-screen integrated black display device, comprising: a TFT display screen, a first OCA layer, a touch sensor layer, a second OCA layer, a cover plate, an electrochromic thin film layer, and an optical coating layer stacked together; wherein, a white glass support layer is provided between the electrochromic thin film layer and the optical coating layer to provide support; or, an ITO heating layer is provided between the cover plate and the electrochromic thin film layer.

[0005] As a preferred technical solution, the stacked structure of the electrochromic film layer consists of a lower flexible PET substrate layer, a Y-axis grating layer, a first transparent ITO conductive film, an electrochromic material layer, a second ITO transparent conductive film, an X-axis grating layer, and an upper flexible PET substrate layer.

[0006] As a preferred technical solution, the thickness of the white glass support layer is 0.3-1.2mm, and the light transmittance is ≥90%.

[0007] As a preferred technical solution, the thickness of both the first OCA layer and the second OCA layer is 0.1-0.3 mm.

[0008] As a preferred technical solution, the sheet resistance of the ITO heating layer is 50-200 ohms per square block, and the operating voltage is 12-48V DC.

[0009] As a preferred technical solution, the electrochromic material layer is a solid electrolyte layer containing tungsten oxide or viologen compounds.

[0010] As a preferred technical solution, the optical coating is an AR anti-reflective coating with a refractive index of 1.2-1.5.

[0011] As a preferred technical solution, the cover plate is made of chemically strengthened glass with a thickness of 0.7-2.0 mm and has a black ink area on the edge.

[0012] As a preferred technical solution, a control module is also included. The control module is electrically connected to the electrochromic film layer and is used to control the electrochromic film layer to switch to the black state when the display screen is turned off.

[0013] As a preferred technical solution, the control module integrates a temperature sensor, forming a closed-loop temperature control system with the ITO heating layer, with an operating temperature range of -30℃ to 85℃.

[0014] The beneficial effects of this utility model are: This utility model achieves the "integrated black" effect of in-vehicle multi-screen display when it is turned off by using a multi-layer structure design that combines a flexible electrochromic thin film layer with an ITO heating layer and a white glass support layer.

[0015] The film employs a composite structure consisting of a flexible PET substrate, an X / Y axis grating layer, a double ITO conductive layer, and an electrochromic material. This allows the light transmittance of the film to be controlled when energized, and it presents a uniform black state when extinguished, effectively eliminating color differences between different displays (such as instrument panels, central control screens, and passenger entertainment screens).

[0016] The introduction of Y-axis and X-axis grating layers can reduce ambient light reflection, enhance black state consistency, and avoid the visual separation between the traditional ink area and the display area.

[0017] The ITO heating layer (50-200 ohms per square block) can heat up rapidly in low-temperature environments (such as -30℃), preventing the electrochromic material from experiencing a decrease in response speed due to low temperatures and ensuring the stability of the black state transition.

[0018] The white glass support layer (0.3-1.2mm) provides rigid support to prevent the flexible film from deforming due to vehicle vibration, while its high light transmittance (≥90%) does not affect the image quality when the screen is displaying normally.

[0019] AR anti-reflective coating (refractive index 1.2-1.5) can reduce screen surface reflection and further improve the purity of black states. Attached Figure Description

[0020] 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.

[0021] Figure 1 A schematic diagram of the stacking structure of a vehicle-mounted multi-screen integrated black display device proposed in this embodiment of the utility model. Figure 1 ;

[0022] Figure 2 A schematic diagram of the stacking structure of a vehicle-mounted multi-screen integrated black display device proposed in this embodiment of the utility model. Figure 2 ;

[0023] Figure 3 This is a schematic diagram of the stacked structure of the electrochromic thin film layer proposed in an embodiment of this utility model.

[0024] Explanation of reference numerals in the attached figures: TFT display screen 1; first OCA layer 2; touch sensor layer 3; second OCA layer 4; cover plate 5; electrochromic film layer 6; lower flexible PET substrate layer 61; Y-axis grating layer 62; first transparent ITO conductive film 63; electrochromic material layer 64; second ITO transparent conductive film 65; X-axis grating layer 66; upper flexible PET substrate layer 67; optical coating 7; white glass support layer 8; ITO heating layer 9. Detailed Implementation

[0025] 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.

[0026] 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.

[0027] 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.

[0028] 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.

[0029] It should be noted that "multiple" as mentioned in this article refers to two or more. Example

[0030] like Figure 1-2 The diagram shows a schematic of a vehicle-mounted multi-screen integrated black display device proposed in this embodiment, including: a TFT display screen 1, a first OCA layer 2, a touch sensor layer 3, a second OCA layer 4, a cover plate 5, an electrochromic thin film layer 6, and an optical coating 7 stacked together; wherein, a white glass support layer 8 is provided between the electrochromic thin film layer 6 and the optical coating 7 to provide support; or, an ITO heating layer 9 is provided between the cover plate 5 and the electrochromic thin film layer 6.

[0031] In the above settings, the electrochromic film layer can be set as a single sheet and placed on multiple screens.

[0032] Preferred, such as Figure 3 As shown, the electrochromic film layer 6 has a stacked structure consisting of a lower flexible PET substrate layer 61, a Y-axis grating layer 62, a first transparent ITO conductive film 63, an electrochromic material layer 64, a second ITO transparent conductive film 65, an X-axis grating layer 66, and an upper flexible PET substrate layer 67. The introduction of the Y-axis grating layer 62 and the X-axis grating layer 66 can reduce ambient light reflection, enhance black state consistency, and avoid the visual separation between the traditional ink area and the display area.

[0033] Preferably, the thickness of the white glass support layer 8 is 0.3-1.2mm, and the light transmittance is ≥90%. It provides rigid support to prevent the flexible film from deforming due to vehicle vibration, while its high light transmittance (≥90%) does not affect the image quality when the screen is displaying normally.

[0034] Preferably, the thickness of both the first OCA layer and the second OCA layer is 0.1-0.3 mm.

[0035] Preferably, the sheet resistance of the ITO heating layer 9 is 50-200 ohms per square block, and the operating voltage is 12-48V DC. It can heat up rapidly in low-temperature environments (such as -30℃) to prevent the electrochromic material from experiencing a decrease in response speed due to low temperatures, thus ensuring the stability of the black state switching.

[0036] Preferably, the electrochromic material layer 64 is a solid electrolyte layer containing tungsten oxide or viologen compounds.

[0037] Preferably, the optical coating 7 is an AR anti-reflective coating with a refractive index of 1.2-1.5. This can reduce surface reflection and further improve the purity of black states.

[0038] Preferably, the cover plate 5 is made of chemically strengthened glass with a thickness of 0.7-2.0 mm and has a black ink area on the edge.

[0039] Preferably, it also includes a control module, which is electrically connected to the electrochromic film layer 6 and is used to control the electrochromic film layer 6 to switch to a black state when the display screen is off.

[0040] Preferably, the control module integrates a temperature sensor, forming a closed-loop temperature control system with the ITO heating layer 9, with an operating temperature range of -30℃ to 85℃.

[0041] 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 vehicle-mounted multi-screen integrated black display device, characterized in that, include: The TFT display screen, first OCA layer, touch sensor layer, second OCA layer, cover plate, electrochromic film layer and optical coating are stacked together; wherein, a white glass support layer is provided between the electrochromic film layer and the optical coating to provide support; or, an ITO heating layer is provided between the cover plate and the electrochromic film layer.

2. The in-vehicle multi-screen integrated black display device according to claim 1, characterized in that, The electrochromic film layer has a stacked structure consisting of a lower flexible PET substrate layer, a Y-axis grating layer, a first transparent ITO conductive film, an electrochromic material layer, a second ITO transparent conductive film, an X-axis grating layer, and an upper flexible PET substrate layer.

3. The in-vehicle multi-screen integrated black display device according to claim 2, characterized in that, The thickness of the white glass support layer is 0.3-1.2 mm, and the light transmittance is ≥90%.

4. The in-vehicle multi-screen integrated black display device according to claim 3, characterized in that, The thickness of both the first OCA layer and the second OCA layer is 0.1-0.3 mm.

5. A vehicle-mounted multi-screen integrated black display device according to claim 4, characterized in that, The sheet resistance of the ITO heating layer is 50-200 ohms per square block, and the operating voltage is 12-48V DC.

6. The in-vehicle multi-screen integrated black display device according to claim 1, characterized in that, The optical coating is an AR anti-reflective coating with a refractive index of 1.2-1.

5.

7. A vehicle-mounted multi-screen integrated black display device according to any one of claims 1-6, characterized in that, The cover plate is made of chemically strengthened glass with a thickness of 0.7-2.0 mm and has a black ink area on the edge.

8. A vehicle-mounted multi-screen integrated black display device according to any one of claims 1-6, characterized in that, It also includes a control module, which is electrically connected to the electrochromic film layer and is used to control the electrochromic film layer to switch to the black state when the display screen is off.

9. A vehicle-mounted multi-screen integrated black display device according to claim 8, characterized in that, The control module integrates a temperature sensor, forming a closed-loop temperature control system with the ITO heating layer, with an operating temperature range of -30℃ to 85℃.

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