TFT head-up display

Abstract

The embodiment of the utility model belongs to the technical field of head-up display. The utility model also relates to a TFT head-up display, which comprises a TFT structure, the TFT structure comprises a TFT main body, a connecting piece is arranged on the TFT main body, the connecting piece is connected with a sapphire lens, and a near-infrared cut-off film is arranged on one surface, far away from the connecting piece, of the sapphire lens. The sapphire lens and the near-infrared cut-off film are arranged on the TFT main body, the sapphire lens and the near-infrared cut-off film are matched with each other, so that damage of near-infrared light, intermediate infrared light and part of far-infrared light to the TFT main body can be effectively isolated, the far-infrared light does not penetrate through the sapphire lens, and the near-infrared cut-off film is plated on the sapphire lens, so that the damage to the TFT main body can be effectively avoided. The near-infrared cut-off film is used for cutting off near-infrared rays, so that the infrared radiation quantity received by the surface of the TFT main body can be remarkably reduced, the working temperature of the TFT main body is reduced, the phenomenon of burn-in is effectively reduced, and the reliability and durability of the display panel are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to head-up display technical field more particularly, relate to a TFT head-up display. BACKGROUND

[0002] The automobile head-up display system (HUD) as an advanced driving auxiliary system, in recent years, the application in various types of vehicles is increasingly widespread, especially under the impetus of the new force of making a car, the price of HUD system is constantly lowered, so that it is no longer the exclusive configuration of high-end vehicle, among numerous HUD systems, the system with TFT (Thin Film Transistor, thin film transistor) as the image source is favored because of its cost advantage, however, the TFT image source HUD system has a significant problem-high temperature screen burn;

[0003] The existing TFT image source HUD system is usually composed of TFT display screen, reflector and windshield glass components, forms a light machine unit, in the hot summer, TFT image source HUD system still appears screen burn phenomenon, the reason is that, after the light transmits through the reflector, although the near-infrared part is allowed to transmit through the lens and irradiate on the black fluff, but the fluff will disperse heat to the surrounding in the form of infrared radiation after being heated, under the joint action of the heat radiation of black fluff and the heat generated by far-infrared in sunlight, TFT display screen is prone to high-temperature screen burn in the hot summer. Therefore we improve, propose a TFT head-up display. CONTENT OF THE UTILITY MODEL

[0004] The utility model embodiment solves the technical problem that TFT display screen is prone to high-temperature screen burn in the hot summer.

[0005] In order to solve the above technical problem, the utility model adopts the technical scheme as follows:

[0006] A TFT head-up display, comprising: TFT structure, the TFT structure includes TFT main body, the TFT main body is provided with connecting piece, the connecting piece is connected with sapphire lens, one side of the sapphire lens away from the connecting piece is provided with near-infrared cut-off film.

[0007] As an improved way of the utility model, the connecting piece is first optical adhesive, and the first optical adhesive is attached between the TFT main body and the near-infrared cut-off film.

[0008] As an improved way of the utility model, the TFT structure further includes a backlight assembly, and the TFT main body is arranged in the backlight assembly.

[0009] As an improved way of the utility model, second optical adhesive is pasted between the TFT main body and the backlight assembly.

[0010] As an improved mode of the utility model, the TFT structure further includes a PCB board, the PCB board is connected with the backlight assembly.

[0011] As an improved mode of the utility model, the TFT main body is connected with the PCB board, and the backlight assembly is connected with the main screen FPC.

[0012] As an improved mode of the utility model, the outside of the TFT structure is provided with a host computer.

[0013] As an improved mode of the utility model, the host computer is provided with a cavity for installing the TFT structure, and the cavity is provided with a lens above the TFT structure.

[0014] As an improved mode of the utility model, the top of the host computer is further provided with a reflection assembly above the lens.

[0015] As an improved mode of the utility model, the reflection assembly includes two support frames installed on the top of the host computer, and the two support frames are connected with a reflection lens.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] To solve the problem that the TFT display screen is prone to high-temperature screen burning in hot summer in the prior art, the sapphire lens and the near-infrared cutoff film are arranged on the TFT main body, and the sapphire lens and the near-infrared cutoff film cooperate with each other to effectively prevent the damage of near-infrared, mid-infrared and part of far-infrared light to the TFT main body. Since the sapphire lens itself does not transmit far-infrared light, and the sapphire lens is coated with a near-infrared cutoff film, the near-infrared cutoff film is used to cut off near-infrared rays, so that the amount of infrared radiation received by the surface of the TFT main body can be significantly reduced, the working temperature of the TFT main body is reduced, the screen burning phenomenon is effectively reduced, the reliability and durability of the utility model are improved, and the service life of the TFT display screen is prolonged. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 The structure schematic diagram of the TFT head-up display provided by the utility model is shown in the figure.

[0019] Figure 2 The lens structure schematic diagram of the TFT head-up display provided by the utility model is shown in the figure.

[0020] Figure 3 The structure schematic diagram of the lens and the TFT structure of the TFT head-up display provided by the utility model is shown in the figure.

[0021] Figure 4 The structure schematic diagram of the TFT head-up display provided by the utility model is shown in the figure.Figure 3 A schematic diagram of the structure viewed from below;

[0022] Figure 5 This is a schematic diagram of the structure of the first optical adhesive for the TFT head-up display provided in this application.

[0023] The image shows:

[0024] 1. Main unit; 2. Lens; 3. TFT structure; 301. PCB board; 302. Backlight assembly; 303. TFT main body; 304. Main screen FPC; 4. Sapphire lens; 401. Near-infrared cut-off film; 402. First optical adhesive; 5. Support frame; 501. Reflective lens. Detailed Implementation

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs; the terminology used herein in the specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The reference herein to "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the invention. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0026] As described in the background section, existing TFT image source HUD systems typically consist of components such as a TFT display screen, a reflector, and a windshield, forming an optomechanical unit. In hot summers, TFT image source HUD systems can still experience screen burn-in. This is because, after light passes through the reflector, although the near-infrared portion is allowed to pass through the lens and irradiate onto the black velvet, the velvet will radiate heat to the surroundings in the form of infrared radiation after being heated. Under the combined effect of the heat radiation from the black velvet and the heat generated by the far-infrared rays in sunlight, the TFT display screen is prone to high-temperature screen burn-in in hot summers.

[0027] To solve this technical problem, this utility model provides a TFT head-up display.

[0028] For details, please refer to Figures 3-5 TFT head-up displays specifically include:

[0029] The TFT structure 3 includes a TFT body 303, a connector is provided on the TFT body 303, a sapphire lens 4 is connected to the connector, and a near-infrared cut-off film 401 is provided on the side of the sapphire lens 4 away from the connector.

[0030] Furthermore, such asFigure 1 As shown, the connecting piece is a first optical glue 402 attached between the TFT main body 303 and the near-infrared cut-off film 401.

[0031] The TFT head-up display provided by the utility model, the application is through setting the sapphire lens 4 and the near-infrared cut-off film 401 on the TFT main body 303, and the sapphire lens 4 and the near-infrared cut-off film 401 can effectively isolate the damage of near-infrared, mid-infrared and part of far-infrared light to the TFT main body 303, since the sapphire lens 4 itself does not transmit far-infrared light, and the sapphire lens 4 is coated with the near-infrared cut-off film 401, and the near-infrared cut-off film 401 is used for cutting off near-infrared rays, so that the amount of infrared radiation received by the surface of the TFT main body 303 can be significantly reduced, thereby reducing the working temperature of the TFT main body 303, effectively reducing the occurrence of screen burn, improving the reliability and durability of the application, and prolonging the service life of the TFT display screen.

[0032] In order for those skilled in the art to better understand the technical scheme of the utility model, the technical scheme in the embodiment of the utility model will be clearly and completely described below in combination with the drawings.

[0033] It should be noted that the embodiments in the utility model and the features and technical solutions in the embodiments can be combined with each other without conflict.

[0034] It should be noted that: similar labels and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0035] Embodiment one of the TFT head-up display of the utility model

[0036] Please refer to Figures 3-5The utility model discloses TFT head-up display, include: TFT structure 3, TFT structure 3 includes TFT main body 303, be provided with connecting piece on TFT main body 303, the connecting piece is connected with sapphire lens 4, and the one side of sapphire lens 4 away from connecting piece is provided with near infrared cut -off film 401;The application passes through setting up sapphire lens 4 and near infrared cut -off film 401 on TFT main body 303, and sapphire lens 4 and near infrared cut -off film 401 cooperate with each other can effectively insulate near infrared, mid -infrared and part far infrared light to the damage of TFT main body 303, because sapphire lens 4 itself does not pass through far infrared light, and sapphire lens 4 is coated with near infrared cut -off film 401, and near infrared cut -off film 401 is used to cut off near infrared, therefore can significantly reduce the infrared radiation amount received on the surface of TFT main body 303, thereby reduce the working temperature of TFT main body 303, effectively reduce the occurrence of screen burn, improve the reliability and durability of the application, prolong the service life of TFT display screen;

[0037] Greatly protect TFT main body 303, by the synergies of sapphire lens 4 and near infrared cut -off film 401, effectively block near, mid, far infrared light, significantly reduce the infrared radiation amount on the surface of TFT main body 303, this not only can reduce the working temperature of TFT main body 303, avoid the influence of its performance and life due to high temperature, can also effectively reduce the occurrence of screen burn, thereby improve the reliability and durability of the whole, mean reduced equipment maintenance and replacement cost, bring longer use value for user, it is explained: sapphire lens 4 itself does not pass through far infrared light, and the cut -off effect of the coated near infrared cut -off film 401 to near infrared, can block the infrared light of different wavelength range comprehensively, thereby provide effective protection for TFT main body 303.

[0038] Further, as shown in Figure 5 The first optical glue 402 is used to ensure the close connection between the sapphire lens 4 and the TFT main body 303, further enhances the isolation effect of the infrared light, can prevent impurities such as dust and water vapor from entering the gap between the sapphire lens 4 and the TFT main body 303, keeps the surface of the sapphire lens 4 and the TFT main body 303 clean, thereby improves the display effect, and at the same time, the close connection is also helpful to reduce the scattering and reflection of light, makes the image more clear and sharp.

[0039] Embodiment two of the utility model discloses TFT head-up display

[0040] The utility model discloses TFT head-up display further, as Figure 5As shown, the TFT structure 3 further comprises a backlight assembly 302, the TFT body 303 is arranged in the backlight assembly 302, the backlight assembly 302 provides stable and uniform backlight for the TFT body 303, so that the display picture is brighter and clearer, and good backlight can improve the contrast and color restoration of the image, enhance the visual effect, and at the same time, stable backlight can also help to reduce eye fatigue, and provide a more comfortable use experience for users.

[0041] Further, the second optical adhesive is pasted between the TFT body 303 and the backlight assembly 302, the second optical adhesive enhances the connection stability between the TFT body 303 and the backlight assembly 302, and it can also play a buffering role to reduce damage to the TFT body 303 caused by vibration or impact; this is because the second optical adhesive can fill the small gap between the TFT body 303 and the backlight assembly 302, so that the two are tightly combined, and when the device is subjected to vibration or impact, the second optical adhesive can absorb part of the energy, reduce the influence on the TFT body 303, thereby improving the impact resistance and reliability of the device.

[0042] Further, as shown in the figure, Figure 5 The TFT structure 3 further comprises a PCB board 301, the PCB board 301 is connected with the backlight assembly 302, the PCB board 301 provides circuit support and control function for the TFT structure 3, ensures that each component can work in coordination, and it can realize signal transmission, processing and control, so that the TFT head-up display can accurately display the required information.

[0043] Further, as shown in the figure, Figure 5 The main screen FPC 304 is connected between the TFT body 303 and the PCB board 301, and the backlight FPC is connected between the backlight assembly 302 and the main screen FPC 304, the use of the FPC realizes flexible connection between the TFT body 303 and the PCB board 301, which is convenient for installation and maintenance, and it can be bent and folded in limited space, adapt to different device structure requirements, and at the same time, the FPC also has good signal transmission performance, which can ensure stable data transmission.

[0044] Embodiment three of the TFT head-up display of the utility model

[0045] Further, as shown in the figure, Figures 1-2 The host computer 1 is arranged outside the TFT structure 3, the host computer 1 provides external protection for the TFT structure 3, reduces physical damage and environmental influence from the outside world, and at the same time, the design of the host computer 1 can also make the whole head-up display more beautiful.

[0046] Further, as shown in the figure, Figure 2As shown, the host 1 is provided with a chamber for installing the TFT structure 3, and the lens 2 is installed above the TFT structure 3 in the chamber, which provides additional physical protection for the TFT structure 3, effectively prevents external objects from directly impacting the TFT structure 3, reduces the risk of damage to the TFT structure 3 due to accidental impact, and at the same time, the lens 2 also has a certain dustproof effect, reduces the possibility of dust entering the inside of the TFT structure 3, keeps the TFT structure 3 clean, and thus ensures the stability of the display effect of the TFT head-up display.

[0047] Further, as shown in the figure, Figure 1 The top of the host 1 is also provided with a reflection assembly directly above the lens 2, which can reflect the light emitted by the TFT structure 3 to the user's line of sight direction, so that the user can view the information without bending down, improving the convenience and safety of use.

[0048] Further, as shown in the figure, Figure 1 The reflection assembly includes two support frames 5 installed on the top of the host 1, and a reflecting lens 501 is connected between the two support frames 5. The support frame 5 is used to support the reflecting lens 501, ensuring the stability and reliability of the reflection effect, and at the same time, the design of the support frame 5 can also make the installation of the reflecting lens 501 more firm and not easy to loosen.

[0049] The existing head-up display system still has screen burning despite so many protections: after the light passes through the reflecting mirror, the near-infrared part transmits through the lens and irradiates the fluff, the fluff receives heat after being irradiated, and then the heat is dispersed to the surrounding in the form of radiation, and the heat dispersed outward is transmitted in the form of infrared;

[0050] In addition, the infrared cutoff film and the infrared transmission film of the light machine are plated on the glass substrate, and the wavelength range targeted is between 800nm-2500nm, and there is no effect on the part exceeding 2500nm, so the heat generated by the far infrared (4-30um) in the sunlight still acts on the display screen, and therefore, the display screen is affected by the heat generated by the black fluff thermal radiation and the far infrared in the sunlight, and finally the screen burning occurs in hot summer;

[0051] The scheme provided by the patent focuses on how to effectively isolate the damage of infrared radiation to the TFT main body 303. This infrared radiation includes near-infrared, medium-infrared, and far-infrared. In the application, a sapphire lens 4 with the same size as the backlight assembly 302 and coated with a near-infrared cutoff film 401 is attached to the TFT main body 303 with the first optical glue 402. The near-infrared cutoff film 401 can cut off infrared light with a wavelength range of 800-2500nm, and the sapphire lens 4 itself does not transmit far-infrared light with a wavelength greater than 2500nm.

[0052] The near infrared is isolated by the near infrared cut-off film 401, and the sapphire mirror 4 is not permeable to far infrared, in normal air, the infrared is almost not permeable in the 5-8um wavelength range, and is absorbed by water vapor and other substances in the air, so that the design of the application can effectively isolate the near, middle and far infrared, protect the TFT main body 303, and reduce the burn-in of the TFT main body 303.

[0053] Obviously, the above-described embodiments are only a part of the embodiments of the present application, rather than all the embodiments, and the preferred embodiments of the present application are given in the drawings, but do not limit the patent scope of the present application. The present application can be realized in many different forms, and conversely, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing specific embodiments, or make equivalent substitutions for part of the technical features. Any equivalent structure made by using the content of the present application specification and drawings, directly or indirectly applied to other related technical fields, is also within the patent protection scope of the present application.

Claims

1. A TFT head-up display, characterized in that, include: TFT structure (3), the TFT structure (3) includes a TFT body (303), a connector is provided on the TFT body (303), the connector is connected to a sapphire lens (4), and a near-infrared cut-off film (401) is provided on the side of the sapphire lens (4) away from the connector. The connector is a first optical adhesive (402), which is attached between the TFT body (303) and the near-infrared cutoff film (401); The TFT structure (3) further includes a backlight assembly (302), and the TFT body (303) is disposed within the backlight assembly (302); The TFT structure (3) also includes a PCB board (301), which is connected to the backlight assembly (302); The TFT body (303) is connected to the PCB board (301) by a main screen FPC (304), and the backlight assembly (302) is connected to the main screen FPC (304) by a backlight FPC.

2. The TFT head-up display according to claim 1, characterized in that, A second optical adhesive is bonded between the TFT body (303) and the backlight assembly (302).

3. The TFT head-up display according to claim 1, characterized in that, The host (1) is disposed on the outside of the TFT structure (3).

4. The TFT head-up display according to claim 3, characterized in that, The host (1) is provided with a chamber for mounting the TFT structure (3), and a lens (2) is installed in the chamber above the TFT structure (3).

5. The TFT head-up display according to claim 4, characterized in that, The host (1) is also provided with a reflective component located directly above the lens (2) on its top.

6. The TFT head-up display according to claim 5, characterized in that, The reflective assembly includes two support frames (5) mounted on top of the host (1), and a reflective lens (501) is connected between the two support frames (5).

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