Liquid crystal display screen capable of monitoring temperature in real time
By bonding a thermistor to the lower substrate of the LCD screen and electrically connecting it to the FPC, and covering it with protective adhesive, the problems of increased FPC area and cost are solved, achieving real-time temperature monitoring and cost reduction.
Patent Information
- Application Number
- CN202520060706.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-10
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2035-01-10
AI Technical Summary
The existing technology of adding thermistors to LCD screens to monitor temperature leads to an increase in FPC area and cost, which affects product competitiveness.
The thermistor is bonded to the lower substrate and electrically connected to the FPC through conductive lines. Only two connection pins need to be added to the FPC, and the thermistor is covered with protective adhesive to prevent it from falling off, thus reducing costs.
This technology enables real-time monitoring of LCD screen temperature without significantly increasing FPC area, thereby reducing costs, improving product competitiveness, and protecting the thermistors with protective adhesive.
Smart Images
Figure CN223842265U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of liquid crystal display technology, and more specifically, to a liquid crystal display screen for real-time temperature monitoring. Background Technology
[0002] The highest temperature point of an LCD screen is generally near the driver IC, because the driver IC generates heat from the light source during operation. To monitor the temperature near the driver IC in real time and prevent excessive heat from affecting the LCD screen's performance, a thermistor is added near the driver IC to detect the temperature. The conventional approach is to extend a small section of the FPC (Flexible Printed Circuit) and add a thermistor to this extension, fixing it to the bottom of the glass surface with double-sided adhesive. The temperature at this point is detected by reading the resistance change of the thermistor. However, this structure increases the FPC area and adds complexity to the bonding process between the thermistor and the FPC, thus increasing the cost of the FPC and reducing the product's competitiveness. Utility Model Content
[0003] The technical problem to be solved by this invention is how to set up a thermistor without significantly increasing the FPC area, so as to monitor the temperature of the LCD screen in real time, while reducing the cost of the product and improving its competitiveness.
[0004] The technical problem to be solved by this utility model is achieved through the following technical solution:
[0005] To solve the above-mentioned technical problems, this utility model provides a liquid crystal display screen for real-time temperature monitoring, which includes a lower polarizer, a lower substrate, an upper substrate, and an upper polarizer stacked sequentially from bottom to top. The lower substrate is longer than the upper substrate and extends outward to form a step. A driver IC, an FPC, and a thermistor are bonded to the upper surface of the lower substrate located at the step. The FPC and the thermistor are electrically connected through conductive lines. The driver IC and the thermistor are covered with protective adhesive, which completely covers the driver IC and completely encapsulates the thermistor.
[0006] In a preferred embodiment of the liquid crystal display screen for real-time temperature monitoring provided by this utility model, the minimum distance between the thermistor and the FPC is 0.5mm.
[0007] In a preferred embodiment of the liquid crystal display screen for real-time temperature monitoring provided by this utility model, the distance between the thermistor and the driving IC is 0.5mm-1.5mm.
[0008] In a preferred embodiment of the liquid crystal display screen for real-time temperature monitoring provided by this utility model, the thermistor is a PTC thermistor or an NTC thermistor.
[0009] In a preferred embodiment of the liquid crystal display screen for real-time temperature monitoring provided by this utility model, components are provided on the upper surface of the end of the FPC.
[0010] In a preferred embodiment of the liquid crystal display screen for real-time temperature monitoring provided by this utility model, a reinforcing plate is provided on the lower surface of the FPC located at the component.
[0011] In a preferred embodiment of the liquid crystal display screen for real-time temperature monitoring provided by this utility model, the thickness of the reinforcing plate is 0.2 mm.
[0012] In a preferred embodiment of the liquid crystal display screen for real-time temperature monitoring provided by this utility model, the reinforcing plate is made of stainless steel.
[0013] In a preferred embodiment of the liquid crystal display screen for real-time temperature monitoring provided by this utility model, conductive silver paste is provided on the upper surface of the upper substrate, the side of the upper substrate, and the upper surface of the lower substrate, and the conductive silver paste is connected to the grounding wire of the FPC.
[0014] In a preferred embodiment of the liquid crystal display screen for real-time temperature monitoring provided by this utility model, the conductive silver paste is provided in two places, and the two conductive silver pastes are respectively disposed on both sides of the driver IC.
[0015] This utility model has the following beneficial effects:
[0016] Since the thermistor is bonded to the lower substrate and electrically connected to the FPC via conductive lines, only two connection pins need to be added to the FPC. This allows the thermistor to be installed without significantly increasing the FPC area, thereby enabling real-time monitoring of the LCD screen temperature, reducing product costs, and improving product competitiveness. The protective adhesive can prevent the thermistor from falling off and also provides protection. Attached Figure Description
[0017] To more clearly illustrate the solutions in this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0018] Figure 1 This is a schematic diagram of the structure of a liquid crystal display screen for real-time temperature monitoring provided by this utility model.
[0019] Figure 2 for Figure 1 Enlarged view of point A in the middle.
[0020] Figure 3 for Figure 1 Side view.
[0021] Figure 4 for Figure 3 Enlarged view of point B.
[0022] Explanation of icon numbers:
[0023] 1. Lower polarizer; 2. Lower substrate; 3. Upper substrate; 4. Upper polarizer; 5. Driver IC; 6. FPC; 7. Thermistor; 8. Protective adhesive; 9. Components; 10. Reinforcing plate; 11. Conductive silver paste. Detailed Implementation
[0024] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.
[0025] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0026] Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0027] This utility model provides a liquid crystal display screen for real-time temperature monitoring, which includes a lower polarizer, a lower substrate, an upper substrate, and an upper polarizer stacked sequentially from bottom to top. The lower substrate is longer than the upper substrate and extends outward to form a step. A driver IC, an FPC, and a thermistor are bonded to the upper surface of the lower substrate located at the step. The FPC and the thermistor are electrically connected through conductive lines. The driver IC and the thermistor are covered with protective adhesive, which completely covers the driver IC and completely encapsulates the thermistor.
[0028] Since the thermistor is bonded to the lower substrate and electrically connected to the FPC via conductive lines, only two connection pins need to be added to the FPC. This allows the thermistor to be installed without significantly increasing the FPC area, thereby enabling real-time monitoring of the LCD screen temperature, reducing product costs, and improving product competitiveness. The protective adhesive can prevent the thermistor from falling off and also provides protection.
[0029] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. The present invention will be described in detail below with reference to the accompanying drawings and embodiments, examples of which are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.
[0030] Example 1, please refer to Figures 1 to 4 This invention provides a liquid crystal display screen for real-time temperature monitoring, comprising a lower polarizer 1, a lower substrate 2, an upper substrate 3, and an upper polarizer 4 stacked sequentially from bottom to top. The lower substrate 2 is longer than the upper substrate 3 and extends outward to form a step. A driver IC 5, an FPC 6, and a thermistor 7 are bonded to the upper surface of the lower substrate 2 at the step. The FPC 6 and the thermistor 7 are electrically connected through conductive lines. The driver IC 5 and the thermistor 7 are covered with a protective adhesive 8, which completely covers the driver IC 5 and the thermistor 7. Since the thermistor 7 is bonded to the lower substrate 2 and electrically connected to the FPC 6 through conductive lines, only two connection pins need to be added to the FPC 6. This allows the thermistor 7 to be installed without significantly increasing the area of the FPC 6, thereby enabling real-time temperature monitoring of the liquid crystal display screen, reducing product costs, and improving product competitiveness. The protective adhesive 8 prevents the thermistor 7 from falling off and provides protection.
[0031] Furthermore, the minimum spacing between the thermistor 7 and FPC6 is 0.5mm to avoid affecting the bonding process of FPC6.
[0032] Furthermore, where space permits, the thermistor 7 should be placed as close as possible to the driver IC5. In this embodiment, the distance between the thermistor 7 and the driver IC5 is 0.5mm-1.5mm.
[0033] Furthermore, the thermistor 7 is a PTC thermistor 7 or an NTC thermistor 7. In this embodiment, the thermistor 7 is an NTC thermistor 7.
[0034] Example 2, please refer to Figures 1 to 4 As a further optimization of Embodiment 1, in this embodiment, a component 9 is provided on the upper surface of the end of the FPC6, and a reinforcing plate 10 is provided on the lower surface of the FPC6 at the component location. The reinforcing plate 10 has a thickness of 0.2 mm and is made of stainless steel. The reinforcing plate 10 can enhance the strength of the component 9 and prevent damage at that location.
[0035] Furthermore, conductive silver paste 11 is provided on the upper surface of the upper substrate 3, the side of the upper substrate 3, and the upper surface of the lower substrate 2. The conductive silver paste 11 is connected to the grounding wire of the FPC6. In this embodiment, there are two conductive silver pastes 11, which are respectively provided on both sides of the driver IC5. The conductive silver paste 11 discharges static electricity from the upper substrate 3 to avoid static electricity accumulation and damage to the liquid crystal display screen.
[0036] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0037] Obviously, the embodiments described above are only some embodiments of this application, not all embodiments. The accompanying drawings show preferred embodiments of this application, but do not limit the patent scope of this application. This application 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 application. Although this application 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 application's specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the scope of patent protection of this application.
Claims
1. A liquid crystal display screen for real-time temperature monitoring, characterized in that, It includes a lower polarizer, a lower substrate, an upper substrate, and an upper polarizer stacked sequentially from bottom to top. The lower substrate is longer than the upper substrate and extends outward to form a step. A driver IC, an FPC, and a thermistor are bonded to the upper surface of the lower substrate located at the step. The FPC and the thermistor are electrically connected through conductive lines. The driver IC and the thermistor are covered with protective adhesive. The protective adhesive completely covers the driver IC and completely encapsulates the thermistor.
2. The liquid crystal display screen for real-time temperature monitoring according to claim 1, characterized in that, The minimum distance between the thermistor and the FPC is 0.5 mm.
3. The liquid crystal display screen for real-time temperature monitoring according to claim 1, characterized in that, The distance between the thermistor and the driver IC is 0.5mm-1.5mm.
4. The liquid crystal display screen for real-time temperature monitoring according to claim 1, characterized in that, The thermistor is a PTC thermistor or an NTC thermistor.
5. The liquid crystal display screen for real-time temperature monitoring according to claim 1, characterized in that, The upper surface of the end of the FPC is provided with components.
6. The liquid crystal display screen for real-time temperature monitoring according to claim 5, characterized in that, A reinforcing plate is provided on the lower surface of the FPC located at the component.
7. The liquid crystal display screen for real-time temperature monitoring according to claim 6, characterized in that, The thickness of the reinforcing plate is 0.2 mm.
8. The liquid crystal display screen for real-time temperature monitoring according to claim 6, characterized in that, The reinforcing plate is made of stainless steel.
9. The liquid crystal display screen for real-time temperature monitoring according to claim 1, characterized in that, Conductive silver paste is provided on the upper surface of the upper substrate, the side of the upper substrate, and the upper surface of the lower substrate, and the conductive silver paste is connected to the grounding wire of the FPC.
10. The liquid crystal display screen for real-time temperature monitoring according to claim 9, characterized in that, The conductive silver paste is located in two places, and the two conductive silver pastes are respectively disposed on both sides of the driver IC.