HUD display module

Abstract

The embodiment of the utility model belongs to the technical field of HUD display. The utility model further relates to an HUD display module which comprises a main screen FPC and an auxiliary FPC connected with the main screen FPC, an FPC wire is arranged between the main screen FPC and the auxiliary FPC, the FPC wire is connected with a main NTC resistor, the FPC wire is further provided with an NTC resistor standby binding position, the main screen FPC is provided with a window used for exposing the NTC resistor standby binding position, and the main screen FPC is provided with an opening used for exposing the NTC resistor standby binding position. According to the utility model, the window is arranged on the main screen FPC, the NTC resistor standby binding position is arranged on the FPC wire, and the arrangement of the NTC resistor standby binding position and the window reserves the connection position of the NTC resistor, so that when the auxiliary FPC is broken and the main NTC resistor cannot be used, the standby NTC resistor can be connected with the NTC resistor standby binding position from the window, and after the auxiliary FPC is broken, the NTC resistor can be connected with the NTC resistor standby binding position. And the product can still work normally and detect the temperature through the standby NTC resistor.

Description

Technical Field

[0001] This utility model relates to the field of HUD display technology, and more specifically, to a HUD display module. Background Technology

[0002] HUD (Head-Up Display) products are important automotive display devices with a wide operating temperature range, typically -40 to 105 degrees Celsius. To ensure that the TFT (Thin Film Transistor) can work normally within this wide temperature range, an NTC resistor needs to be installed for temperature detection. The NTC resistor can change its resistance value with temperature changes, thereby achieving accurate monitoring of the TFT temperature.

[0003] However, in existing manufacturing processes, when bonding the FPC, the NTC circuit needs to be bent into the component area of ​​the FPC. Therefore, the FPC is designed with a U-shaped slot structure to accommodate this bending process. After the main body of the FPC is bonded to the TFT, the NTC resistor is then attached to the TFT. However, this manufacturing method has some problems. In particular, because the part of the FPC containing the NTC resistor needs to be bent, improper design may cause the FPC to tear at the bending point, making it impossible to detect the TFT temperature. Therefore, we propose an improvement to this problem, namely a HUD display module. Utility Model Content

[0004] The technical problem to be solved by this utility model embodiment is that the FPC part where the NTC resistor is located needs to be bent. If the design is not proper, the FPC may tear at the bending point, making it impossible to detect the TFT temperature.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A HUD display module includes: a main screen FPC and a secondary FPC connected to the main screen FPC. FPC traces are provided between the main screen FPC and the secondary FPC, and the FPC traces are connected to a main NTC resistor. The FPC traces also have spare NTC resistor bonding positions. The main screen FPC has an opening for exposing the spare NTC resistor bonding positions. This invention, by providing an opening on the main screen FPC and a spare NTC resistor bonding position on the FPC traces, reserves connection points for the NTC resistor. When the secondary FPC breaks, rendering the main NTC resistor unusable, the spare NTC resistor can be connected to the spare NTC resistor bonding position through the opening. This allows the product to continue operating normally and detecting temperature even after the secondary FPC breaks.

[0007] As an improvement of this utility model, the NTC resistor spare bonding bit is used to connect a reserved NTC resistor after the secondary FPC breaks.

[0008] As an improvement of this utility model, the main screen FPC is bound to a TFT display component, and the secondary FPC is also connected to the TFT display component.

[0009] As an improvement of this utility model, the main screen FPC is provided with an FPC bending area. The FPC bending area is used for bending the main screen FPC. In the development trend of modern electronic devices pursuing miniaturization and thinness, reasonable space utilization is particularly important. The setting of the FPC bending area allows the main screen FPC to be flexibly bent according to the internal structure and space requirements of the product, reducing the space waste and layout difficulties caused by the inability of the FPC to be bent, and making the product more compact and portable.

[0010] As an improvement of this utility model, the main screen FPC is also provided with an FPC component area.

[0011] As an improvement of this utility model, the spare bonding position of the NTC resistor is a solder pad. The surface of the solder pad is tin-plated or gold-plated to improve the reliability and conductivity of the soldering, and the size of the solder pad is adapted to the reserved NTC resistor pin size.

[0012] As an improvement of this utility model, the outer surfaces of the main screen FPC and the secondary FPC are provided with an insulating protective coating, which is a parylene coating.

[0013] As an improvement of this utility model, positioning marks are provided around the main NTC resistor and the window.

[0014] As an improvement of this utility model, the positioning mark is printed with ink and is used for alignment when setting the NTC resistor.

[0015] As an improvement of this utility model, the edges of the main screen FPC and the sub-FPC are chamfered to reduce scratches on other components during assembly, while improving the safety and reliability of the main screen FPC and the sub-FPC.

[0016] Compared with the prior art, the embodiments of this utility model have the following main advantages:

[0017] To address the issue in existing technologies where the FPC containing the NTC resistor needs to be bent, which can lead to tearing at the bend and prevent TFT temperature detection if not properly designed, this invention provides a window on the main screen FPC and a spare NTC resistor bonding position on the FPC trace. The spare NTC resistor bonding position and the window provide connection points for the NTC resistor. When the secondary FPC breaks and the main NTC resistor becomes unusable, the spare NTC resistor can be connected from the window to the spare NTC resistor bonding position. This ensures that even after the secondary FPC breaks, the product can still function normally and detect temperature through the spare NTC resistor. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the HUD display module provided by this utility model;

[0019] Figure 2 The HUD display module provided by this utility model Figure 1 Enlarged structural diagram at point A in the middle;

[0020] Figure 3 The HUD display module provided by this utility model Figure 1 Enlarged structural diagram at point B;

[0021] Figure 4 This is a schematic diagram of the structure of the main screen FPC of the HUD display module provided by this utility model;

[0022] Figure 5 This is a schematic diagram of the FPC traces and NTC resistor spare bonding bits of the HUD display module provided by this utility model.

[0023] The image shows:

[0024] 1. Main FPC; 101. FPC traces; 102. FPC bending area; 103. FPC component area; 104. Secondary FPC; 2. Main NTC resistor; 3. NTC resistor spare bonding position; 4. Window; 5. TFT display assembly. 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 art, in existing manufacturing processes, when bonding an FPC, the NTC circuit needs to be bent into the component area of ​​the FPC. Therefore, the FPC is designed with a U-shaped slotted structure to accommodate this bending process. After the main body of the FPC is bonded to the TFT, the NTC resistor is then attached to the TFT. However, this manufacturing method has some problems. In particular, since the part of the FPC where the NTC resistor is located needs to be bent, if the design is not proper, the FPC may tear at the bending point, making it impossible to detect the TFT temperature.

[0027] To solve this technical problem, this utility model provides a HUD display module.

[0028] For details, please refer to Figures 1-5 The HUD display module specifically includes:

[0029] The main screen FPC1 and the secondary FPC104 connected to the main screen FPC1 are provided with an FPC trace 101 between the main screen FPC1 and the secondary FPC104. The FPC trace 101 is connected to a main NTC resistor 2. The FPC trace 101 is also provided with a spare NTC resistor binding position 3. The main screen FPC1 is provided with a window 4 for exposing the spare NTC resistor binding position 3.

[0030] The HUD display module provided by this utility model has a window 4 on the main screen FPC1 and an NTC resistor spare bonding position 3 on the FPC trace 101. The NTC resistor spare bonding position 3 and the window 4 reserve the connection position of the NTC resistor. When the secondary FPC104 breaks and the main NTC resistor 2 becomes unusable, the spare NTC resistor can be connected to the NTC resistor spare bonding position 3 from the window 4. This allows the product to still work normally and detect the temperature of the TFT display component 5 after the secondary FPC104 breaks.

[0031] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0032] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0033] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0034] Embodiment 1 of the HUD display module of this utility model

[0035] Please refer to Figures 1-5 The HUD display module of this utility model includes: a main screen FPC1 and a secondary FPC104 connected to the main screen FPC1. An FPC trace 101 is provided between the main screen FPC1 and the secondary FPC104, and the FPC trace 101 is connected to a main NTC resistor 2. An NTC resistor spare bonding position 3 is also provided on the FPC trace 101, and a window 4 is provided on the main screen FPC1 to expose the NTC resistor spare bonding position 3. By providing a window 4 on the main screen FPC1 and an NTC resistor spare bonding position 3 on the FPC trace 101, the utility model provides a connection position for the NTC resistor by providing a window 4 on the main screen FPC1 and a spare NTC resistor bonding position 3 on the FPC trace 101. When the secondary FPC104 breaks and the main NTC resistor 2 becomes unusable, the spare NTC resistor can be connected to the NTC resistor spare bonding position 3 through the window 4, so that after the secondary FPC104 breaks, the product can still work normally and detect the temperature of the TFT display component 5 through the spare NTC resistor.

[0036] Furthermore, the NTC resistor spare binding bit 3 is used to connect a reserved NTC resistor in the event of a breakage of the secondary FPC104; providing a precise and clear location for connecting the spare NTC resistor.

[0037] Embodiment 2 of the HUD display module of this utility model

[0038] Further, this utility model's HUD display module, such as Figure 1As shown, the main screen FPC1 is bonded to the TFT display component 5, and the secondary FPC104 is also connected to the TFT display component 5. Since the NTC resistor spare bonding position 3 is a certain distance from the TFT display component 5, a certain proportion of temperature compensation needs to be added when using the spare NTC resistor for measurement, such as adding 20% ​​temperature compensation. It should be noted that the distance between the main NTC resistor 2 and the spare NTC resistor is different, and the added temperature compensation ratio is also different. The specific amount of temperature compensation to add can be repeatedly tested at the beginning of product design to obtain the temperature compensation ratio. Specifically, first use the main NTC resistor 2 to measure the temperature, then tear off the secondary FPC104 and set the spare NTC resistor at the NTC resistor spare bonding position 3, and then measure again. Compare the measured values ​​before and after to obtain the temperature compensation ratio.

[0039] During the product design process, through extensive experiments and data analysis, the impact of the positional difference between the spare NTC resistor and the main NTC resistor 2 on temperature measurement was fully considered. By comparing the measured values ​​of the main NTC resistor 2 and the spare NTC resistor, the temperature difference pattern between the two can be accurately identified, thereby determining the appropriate temperature compensation ratio. This scientific method based on experimental data ensures the accuracy and reliability of temperature compensation.

[0040] Furthermore, such as Figure 1 As shown, the main screen FPC1 is provided with an FPC bending area 102, which is used for bending the main screen FPC1. In the development trend of modern electronic devices pursuing miniaturization and thinness, reasonable space utilization is particularly important. The setting of the FPC bending area 102 allows the main screen FPC1 to be flexibly bent according to the internal structure and space requirements of the product, reducing the space waste and layout difficulties caused by the inability of FPC to be bent, and making the product more compact and portable.

[0041] Furthermore, such as Figure 1 As shown, the main screen FPC1 also has an FPC component area 103. Concentrating the components in the FPC component area 103 makes the circuit layout clearer and neater, which is convenient for production personnel to install and debug, improves production efficiency, and allows maintenance personnel to quickly locate and repair faulty components during later maintenance, reducing maintenance time and costs.

[0042] Furthermore, the spare NTC resistor bonding point 3 is a solder pad. The surface of the solder pad is tin-plated or gold-plated to improve the reliability and conductivity of the soldering, and the size of the solder pad is adapted to the size of the reserved NTC resistor pins. The tin-plated or gold-plated solder pad can provide better soldering performance, so that a firm connection is formed between the spare NTC resistor and the solder pad, reducing problems such as increased contact resistance and loosening caused by poor soldering. At the same time, the adapted size design allows the NTC resistor pins to be accurately connected to the solder pad, further improving the stability and conductivity of the connection. This is crucial for the normal operation of the spare NTC resistor, ensuring that the spare NTC resistor can measure the temperature of the TFT display component 5 after the secondary FPC104 breaks, thus ensuring the normal operation of the product.

[0043] Embodiment 3 of the HUD display module of this utility model

[0044] Furthermore, the outer surfaces of the main screen FPC1 and the secondary FPC104 of this utility model HUD display module are provided with an insulating protective coating. The insulating protective coating is a parylene coating, which has excellent insulation performance and chemical stability. It can form a protective film on the FPC surface, effectively isolating the FPC from electrical contact with the external environment and reducing leakage and short circuit problems caused by factors such as moisture, dust, and static electricity.

[0045] Furthermore, such as Figures 2-3 As shown, positioning marks are set around the main NTC resistor 2 and the window 4. The positioning marks provide operators with a clear reference for the installation position, enabling quick and accurate alignment when installing the main NTC resistor 2 or connecting the spare NTC resistor. This reduces installation errors and repetitive operations caused by positional deviations, which not only improves work efficiency but also reduces labor costs and product defect rates. For mass-produced products, improved production efficiency means producing more products in a shorter time to meet market demand and improve the company's economic benefits.

[0046] Furthermore, the positioning marks are printed with ink and used for alignment when setting up NTC resistors. Ink printing is a common and low-cost marking method that can form clear and distinct positioning marks on the FPC surface. Ink printing does not require complex equipment and processes, reducing production costs. At the same time, ink-printed marks have good wear resistance and corrosion resistance, ensuring that the positioning marks can provide operators with accurate alignment references during use, and ensuring the accuracy and stability of NTC resistor installation and replacement operations.

[0047] Furthermore, the edges of the main screen FPC1 and the secondary FPC104 are chamfered to reduce scratches on other components during assembly, while improving the safety and reliability of the main screen FPC1 and the secondary FPC104. This effectively protects other components from scratches, comprehensively improving the quality and safety of product assembly. It also significantly reduces the risk of damage to the FPC itself due to sharp edges. During product assembly, if the edges of the FPC are too sharp, they can easily scratch other components, such as the display screen and circuit boards, leading to damage or performance degradation of these components. The chamfering process makes the edges of the FPC smooth, reducing the occurrence of this situation and ensuring the integrity and performance stability of other components.

[0048] In use, first bind the main screen FPC1 to the TFT display component 5, and then bind the secondary FPC104 to the TFT display component 5. During use, the temperature of the TFT display component 5 is detected by the main NTC resistor 2. If the secondary FPC104 breaks during binding, a spare NTC resistor is bound at the spare binding position 3 of the NTC resistor, and the temperature can be detected by the spare NTC resistor.

[0049] Obviously, the embodiments described above are only some embodiments of this utility model, not all embodiments. The accompanying drawings show preferred embodiments of this utility model, but do not limit the patent scope of this utility model. This utility model can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this utility model specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this utility model.

Claims

1. A HUD display module, characterized in that, include: The main screen FPC (1) and the secondary FPC (104) connected to the main screen FPC (1) are provided with an FPC trace (101) between the main screen FPC (1) and the secondary FPC (104), and the FPC trace (101) is connected to a main NTC resistor (2). The FPC trace (101) is also provided with a spare NTC resistor binding position (3), and the main screen FPC (1) has an opening (4) for exposing the spare NTC resistor binding position (3).

2. The HUD display module according to claim 1, characterized in that, The NTC resistor spare binding bit (3) is used to connect the reserved NTC resistor after the secondary FPC (104) breaks.

3. The HUD display module according to claim 1 or 2, characterized in that, The main screen FPC (1) is bound to a TFT display component (5), and the secondary FPC (104) is also connected to the TFT display component (5).

4. The HUD display module according to claim 3, characterized in that, The main screen FPC (1) is provided with an FPC bending area (102), which is used for bending of the main screen FPC (1).

5. The HUD display module according to claim 4, characterized in that, The main screen FPC (1) is also provided with an FPC component area (103).

6. The HUD display module according to claim 5, characterized in that, The NTC resistor spare bonding bit (3) is a solder pad, and the surface of the solder pad is tin-plated or gold-plated.

7. The HUD display module according to claim 6, characterized in that, The outer surfaces of the main screen FPC (1) and the secondary FPC (104) are provided with an insulating protective coating, which is a parylene coating.

8. The HUD display module according to claim 7, characterized in that, Positioning markers are provided around the main NTC resistor (2) and the window (4).

9. The HUD display module according to claim 8, characterized in that, The positioning mark is printed with ink and is used for alignment when setting the NTC resistor.

10. The HUD display module according to claim 9, characterized in that, The edges of the main screen FPC (1) and the secondary FPC (104) are chamfered.

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