A temperature-controlled liquid crystal display module
By introducing thermistor and motherboard instruction control technology into the liquid crystal display module, the problem of excessive heating of the liquid crystal display module is solved, power consumption and heat reduction is achieved, module life is extended and user experience is improved.
Patent Information
- Application Number
- CN202421420406.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-20
- Publication Date
- 2025-04-01
- Estimated Expiration
- 2034-06-20
AI Technical Summary
The high power consumption of existing LCD display modules leads to excessive heat generation, affecting the working environment and life of the module.
Design a temperature-controlled liquid crystal display module to monitor the module temperature through the thermistor, and use the motherboard to send instructions to control the current of the backlight LED and the refresh frequency of the LCD LCD display to reduce the total power consumption and heat generation.
It effectively reduces the heat of the display module, keeps the module in an excellent working environment, extends the module's life, and improves the consumer experience.
Smart Images
Figure CN222704856U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of display modules, and in particular to a temperature-controlled liquid crystal display module. Background Art
[0002] The power consumption of the LCD display module is mainly composed of the backlight module power consumption and the integrated circuit driver IC power consumption. The backlight power consumption accounts for about 80-90% (calculated based on 16 lamps and 2 strings of backlight, the backlight power consumption is 42mA*24V=1008mW). As the terminal customers' requirements for module brightness increase and the refresh rate of the display module increase, the total power consumption of the display module increases accordingly. The greater the power consumption, the greater the heat generated. Excessive heat generation will affect the operation of the display module. In view of this, it is urgent to propose a temperature-controlled LCD display module that can monitor the temperature of the LCD display module, control the backlight module and LCD display through the mainboard to send instructions, reduce the module power consumption, and thus reduce the heat of the display module, so that the display module is maintained in an excellent working environment, the life of the display module is increased, and the consumer experience is improved. Utility Model Content
[0003] The purpose of the utility model is to monitor the temperature of a liquid crystal display module, perform temperature control on the display module, and reduce the heat generated by the display module.
[0004] Specifically, the specific technical scheme of the utility model is: a temperature-controlled liquid crystal display module is proposed, including a cover plate, OCA glue, an LCD liquid crystal display and a backlight module; wherein the backlight module includes a backlight LED and an FPC, and the backlight module is used to provide a light source for the display module; the LCD liquid crystal display includes a binding area, the binding area is bound with an integrated circuit driver IC and a main screen FPC, and the main screen FPC is provided with a main connector, a sub-connector, a component area and a main screen FPC welding position; a thermistor (R) is provided near the center of the integrated circuit driver IC in the component area, one end of the thermistor (R) is grounded, and the other end is led out by the main connector and connected to the NTC detection port of the mainboard.
[0005] As a preferred technical solution, the main screen FPC is bent and aligned and attached to the center of the backlight LED and the integrated circuit driver IC.
[0006] As a preferred technical solution, the thermistor (R) is configured to measure the temperature of the center area between the backlight LED and the integrated circuit driver IC.
[0007] As a preferred technical solution, the NTC detection port of the mainboard can send instructions to adjust the backlight LED current of the backlight module.
[0008] As a preferred technical solution, the NTC detection port of the mainboard can send instructions to adjust the refresh frequency of the LCD liquid crystal display.
[0009] As a preferred technical solution, the maximum rated power of the thermistor (R) is set to 100 mW at 25°C.
[0010] As a preferred technical solution, the operating current of the thermistor (R) is 0.1 mA.
[0011] As a preferred technical solution, an upper polarizer and a lower polarizer are respectively provided above and below the LCD liquid crystal display.
[0012] As a preferred technical solution, the backlight module also includes upper and lower brightness enhancement films, a reflective film, a light guide plate and a diffusion film.
[0013] As a preferred technical solution, the OCA glue is a fully laminated OCA glue.
[0014] The beneficial effect of the utility model is that the temperature-controlled liquid crystal display module proposed by the utility model can monitor the temperature of the liquid crystal display module, send instructions through the mainboard to control the current of the backlight LED and the refresh frequency of the LCD liquid crystal display, reduce the power consumption of the module, thereby reducing the heat of the display module, so that the display module is maintained in an excellent working environment, the life of the display module is increased, and the consumer experience is improved. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.
[0016] Figure 1 A schematic diagram of a temperature-controlled liquid crystal display module stacking structure proposed in an embodiment of the utility model;
[0017] Figure 2 A schematic diagram of the structure of a temperature-controlled liquid crystal display module proposed in an embodiment of the utility model;
[0018] Figure 3 A schematic diagram of the back structure of a temperature-controlled liquid crystal display module proposed in an embodiment of the utility model;
[0019] Figure 4 This is a schematic diagram of the thermistor connection method proposed in an embodiment of the utility model.
[0020] Explanation of the reference numerals: cover plate 1; OCA glue 2; upper polarizer 3; LCD liquid crystal display 4; lower polarizer 5; backlight module 6; main screen FPC 7; main connector 8; sub-connector 9; thermistor 10; component area 11; integrated circuit driver IC 12; NTC detection port 13. DETAILED DESCRIPTION
[0021] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this application will be more comprehensive and complete and fully convey the concept of the example embodiments to those skilled in the art.
[0022] In addition, described feature, structure or characteristic can be combined in one or more embodiments in any suitable manner. In the following description, many specific details are provided to provide a full understanding of the embodiments of the present application. However, those skilled in the art will appreciate that the technical scheme of the present application can be put into practice without one or more of the specific details, or other methods, components, devices, steps, etc. can be adopted. In other cases, known methods, devices, realizations or operations are not shown or described in detail to avoid blurring the various aspects of the application.
[0023] 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 may be implemented in software form, or in one or more hardware modules or integrated circuits, or in different networks and / or processor devices and / or microcontroller devices.
[0024] The flowcharts shown in the accompanying drawings are only exemplary and do not necessarily include all the contents and operations / steps, nor must they be executed in the order described. For example, some operations / steps can be decomposed, and some operations / steps can be combined or partially combined, so the actual execution order may change according to actual conditions.
[0025] It should be noted that the “plurality” mentioned in this article refers to two or more.
[0026] Example
[0027] like Figure 1-4 As shown, this embodiment provides a temperature-controlled liquid crystal display module, including a cover plate, OCA glue, an LCD liquid crystal display and a backlight module; wherein the backlight module includes a backlight LED and an FPC, and the backlight module is used to provide a light source for the display module. Figure 2 As shown, the LCD liquid crystal display includes a binding area, the binding area is bound with an integrated circuit driver IC and a main screen FPC, the main screen FPC is provided with a main connector, a sub-connector, a component area and a main screen FPC welding position; a thermistor (R) is provided near the center of the integrated circuit driver IC in the component area, as shown in FIG. Figure 4As shown, one end of the thermistor (R) is grounded, and the other end is led out from the main connector and connected to the NTC detection port on the mainboard.
[0028] like Figure 3 As shown, preferably, the main screen FPC is bent and aligned and attached to the center of the backlight LED and the integrated circuit driver IC. In this way, the thermistor (R) is located at the center of the integrated circuit driver IC and the backlight LED lamp, which is also the place where the heat of the liquid crystal display module is most concentrated. Furthermore, the thermistor (R) is configured to measure the temperature of the center area of the backlight LED and the integrated circuit driver IC, making it easier to obtain the temperature of the display module.
[0029] Preferably, the mainboard NTC detection port can send instructions to adjust the backlight LED current of the backlight module. The mainboard NTC detection port can send instructions to adjust the refresh rate of the LCD liquid crystal display. For example, when the display module is operated in a high environment or used for a long time, the backlight LED will heat up, and the LCD liquid crystal display's own power consumption will be superimposed, causing the LCD display module to heat up, and the resistance value of the thermistor (R) will decrease accordingly. When the mainboard NTC detection port detects a change in the resistance value of the thermistor (R), an instruction is sent to reduce the backlight current of the backlight module from Normal l (for example, Normal l = 21mA / LED to 15mA / LED), and the LCD liquid crystal display from a high refresh rate to a low refresh rate (for example, 90HZ to 60HZ), so as to ensure that the display module works normally, reduce the total power consumption of the display module, and thus reduce the heat generated by the display module.
[0030] Preferably, the maximum rated power of the thermistor (R) is set to 100 mW at 25° C. The operating current of the thermistor (R) is 0.1 mA.
[0031] The thermistor (R) may be NTCG064EF104FTBX of NTC, with an impedance of 100kΩ±1% at room temperature of 25°C, a sensitivity parameter B25 / 50 value of 4250K±1%, a maximum rated power (25°C) of 100mW, and an allowable operating current of 0.1mA. The specific parameters are as follows.
[0032] Temp Min Nom Max B25 / T -dT dT (degC) (kohm) (kohm) (kohm) (K) (degC) (degC) -40 4054 4251 4458 4010 -0.6 0.6 -30 2063 2149 2238 4043 -0.6 0.6 -20 1097 1135 1175 4075 -0.5 0.5 -10 606.6 624.1 642 4105 -0.5 0.5 0 347.6 355.6 363.8 4133 -0.4 0.4 10 205.8 209.4 213.1 4160 -0.3 0.3 20 125.5 127 128.6 4185 -0.3 0.3 25 99 100 101 4197 -0.2 0.2 30 78.26 79.23 80.21 4208 -0.3 0.3 40 49.84 50.68 51.54 4230 -0.4 0.4 50 32.5 33.19 33.9 4250 -0.5 0.5 60 21.67 22.22 22.78 4269 -0.7 0.7 70 14.75 15.18 15.63 4286 -0.8 0.8 80 10.24 10.58 10.92 4301 -0.9 0.9 90 7.235 7.5 7.774 4315 -1.1 1.1 100 5.202 5.41 5.626 4327 -1.3 1.3 110 3.801 3.966 4.137 4338 -1.4 1.4 120 2.821 2.952 3.088 4347 -1.6 1.6 125 2.444 2.561 2.683 4351 -1.7 1.7
[0033] Preferably, an upper polarizer and a lower polarizer are respectively provided above and below the LCD liquid crystal display.
[0034] Preferably, the backlight module further includes upper and lower brightness enhancement films, a reflective film, a light guide plate and a diffusion film.
[0035] Preferably, the OCA glue is full-fit OCA glue.
[0036] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above description is only the specific implementation method of the utility model and is not used to limit the protection scope of the utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.
Claims
1. A temperature-controlled liquid crystal display module, characterized in that: It includes a cover plate, OCA glue, an LCD liquid crystal display and a backlight module; wherein the backlight module includes a backlight LED and an FPC, and the backlight module is used to provide a light source for the display module; the LCD liquid crystal display includes a binding area, and the binding area is bound with an integrated circuit driver IC and a main screen FPC, and the main screen FPC is provided with a main connector, a sub-connector, a component area and the main screen FPC welding position; the component area is provided with a thermistor (R) near the center of the integrated circuit driver IC, and one end of the thermistor (R) is grounded, and the other end is led out by the main connector and connected to the NTC detection port of the mainboard.
2. A temperature-controlled liquid crystal display module according to claim 1, characterized in that: The main screen FPC is bent and aligned and attached to the center position of the backlight LED and the integrated circuit driver IC.
3. A temperature-controlled liquid crystal display module according to claim 2, characterized in that: The thermistor (R) is configured to measure the temperature of a center area between the backlight LED and the integrated circuit driver IC.
4. The temperature-controlled liquid crystal display module according to claim 2, characterized in that: The NTC detection port of the mainboard can send instructions to regulate the backlight LED current of the backlight module.
5. A temperature-controlled liquid crystal display module according to claim 4, characterized in that: The NTC detection port of the mainboard can send instructions to adjust the refresh frequency of the LCD liquid crystal display.
6. The temperature-controlled liquid crystal display module according to claim 1, characterized in that: The maximum power rating of the thermistor (R) is set to 100 mW at 25°C.
7. The temperature-controlled liquid crystal display module according to claim 6, characterized in that: The working current of the thermistor (R) is 0.1 mA.
8. A temperature-controlled liquid crystal display module according to any one of claims 1 to 7, characterized in that: An upper polarizer and a lower polarizer are respectively arranged above and below the LCD liquid crystal display.
9. A temperature-controlled liquid crystal display module according to any one of claims 1 to 7, characterized in that: The backlight module also includes upper and lower brightness enhancement films, a reflective film, a light guide plate and a diffusion film.
10. A temperature-controlled liquid crystal display module according to any one of claims 1 to 7, characterized in that: The OCA glue is a full-lamination OCA glue.