Backlight LED and liquid crystal screen display two-in-one driving module
By using a two-in-one driver module for backlight LED and LCD screen display in the LCD display, sharing a power module, the increase in volume and weight caused by the separation design of the backlight drive module and the LCD screen display drive module is solved, and the circuit design is simplified and cost-reducing effects.
Patent Information
- Application Number
- CN202420517652.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-15
- Publication Date
- 2025-01-17
- Estimated Expiration
- 2034-03-15
AI Technical Summary
The separation design of the backlight driving module and the LCD screen display driving module in existing LCD displays leads to increased product volume and weight, and increased circuit complexity and manufacturing costs.
The two-in-one driver module of backlight LED and LCD screen display are adopted. By sharing a power module, the power module of the backlight module and the LCD display module are merged to simplify circuit design and reduce production costs.
Reduces the power module of the backlight module, simplifies circuit design, reduces production costs, and improves product reliability.
Smart Images
Figure CN222365389U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of liquid crystal displays, in particular to a two-in-one driving module of a backlight LED and a liquid crystal display. Background Art
[0002] At present, the backlight driving module and the LCD display driving module are important components of the liquid crystal display.
[0003] In the related art, the backlight driver module requires an independent circuit to provide the working voltage, and the LCD display driver module also requires a corresponding power supply module to generate the required voltage, such as 3.3V, 1.8V, etc. However, this separate design not only increases the volume and weight of the product, but also leads to an increase in circuit complexity and an increase in manufacturing costs. Utility Model Content
[0004] The purpose of the utility model is to overcome the deficiencies in the prior art and provide a two-in-one driving module for backlight LED and liquid crystal display, which can share a driving module for the light driving module and the liquid crystal display driving module, thereby simplifying the circuit design, reducing the manufacturing cost, and reducing the overall volume and weight of the module.
[0005] The purpose of this utility model is achieved through the following technical solutions:
[0006] The first aspect of the present application provides a two-in-one driving module for a backlight LED and a liquid crystal display, comprising: a power module; a backlight module, the backlight module comprising a first chip and a first communication unit, the first chip is electrically connected to the power module, and the first communication unit is arranged on the first chip; a liquid crystal display module, the liquid crystal display module comprising a second chip and a second communication unit, the second chip is electrically connected to the power module.
[0007] The power module includes a third chip, an inductor L701 and a resistor R730, wherein a first end of the inductor L701 is electrically connected to the third chip, a second end of the inductor L701 is electrically connected to a first end of the resistor R730, and a second end of the resistor R730 is electrically connected to the first chip and the second chip respectively.
[0008] The power module further includes a resistor R728 and a resistor R729. A first end of the resistor R728 is electrically connected to the third chip, and a second end of the resistor R728 is electrically connected to the resistor R729.
[0009] The power module also includes a capacitor C720 and a capacitor C721, wherein a first end of the capacitor C720 is electrically connected to the third chip, a second end of the capacitor C720 is grounded, a first end of the capacitor C721 is electrically connected to a first end of the capacitor C720, and a second end of the capacitor C721 is grounded.
[0010] The power module also includes a resistor R726 and a resistor R727, wherein a first end of the resistor R726 is electrically connected to a first end of the resistor R730, a second end of the resistor R726 is electrically connected to the third chip, a first end of the resistor R727 is electrically connected to the third chip, and a second end of the resistor R727 is grounded.
[0011] The power supply module also includes capacitor C722, capacitor C723, capacitor C724 and capacitor C725. The first end of the capacitor C722 is electrically connected to the first end of the resistor R730, and the second end of the capacitor C722 is grounded. The first end of the capacitor C723 is electrically connected to the first end of the resistor R730, and the second end of the capacitor C723 is grounded. The first end of the capacitor C724 is electrically connected to the first end of the resistor R730, and the second end of the capacitor C724 is grounded. The first end of the capacitor C725 is electrically connected to the first end of the resistor R730, and the second end of the capacitor C725 is grounded.
[0012] The first communication unit includes a first pin and a second pin, and the first pin and the second pin are disposed on the first chip.
[0013] The second communication unit includes a third pin and a fourth pin, wherein the third pin and the fourth pin are disposed on the second chip, the first pin is electrically connected to the third pin, and the second pin is electrically connected to the fourth pin.
[0014] The first communication unit includes a fifth pin and a sixth pin, and the fifth pin and the sixth pin are disposed on the first chip.
[0015] The second communication unit includes a seventh pin and an eighth pin, wherein the seventh pin and the eighth pin are disposed on the second chip, the seventh pin is electrically connected to the fifth pin, and the eighth pin is electrically connected to the sixth pin.
[0016] Compared with the prior art, the utility model has at least the following advantages:
[0017] By using a common power module for the backlight module and the liquid crystal display module, on the one hand, the power modules of the backlight module can be reduced, the circuit design is simplified, and the production cost is reduced; on the other hand, the failure rate of the circuit is reduced and the reliability of the product is improved. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for use in the embodiments are briefly introduced below.
[0019] Figure 1 This is a functional module diagram of a two-in-one driving module for backlight LED and liquid crystal display in one embodiment of the utility model;
[0020] Figure 2 A circuit diagram of a backlight module and a liquid crystal display module in an embodiment of the utility model;
[0021] Figure 3 FIG. 4 is a circuit diagram of a power module in an embodiment of the present utility model. DETAILED DESCRIPTION
[0022] The embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although the embodiments of the present application are shown in the accompanying drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the present application more thorough and complete, and to fully convey the scope of the present application to those skilled in the art.
[0023] It should be understood that although the terms "first", "second", "third", etc. may be used in this application to describe various information, this information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of this application, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.
[0024] Unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, or a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0025] In the related art, the backlight driver module requires an independent circuit to provide the working voltage, and the LCD display driver module also requires a corresponding power supply module to generate the required voltage, such as 3.3V, 1.8V, etc. However, this separate design not only increases the volume and weight of the product, but also leads to an increase in circuit complexity and an increase in manufacturing costs.
[0026] In response to the above problems, an embodiment of the present application provides a two-in-one backlight LED and liquid crystal display driving module, which can share a driving module for the light driving module and the liquid crystal display driving module, thereby simplifying circuit design, reducing manufacturing costs, and reducing the overall volume and weight of the module.
[0027] The technical solution of the embodiments of the present application is described in detail below with reference to the accompanying drawings.
[0028] See also Figure 1 and Figure 2 A two-in-one driving module for backlight LED and liquid crystal display includes: a power module 100, a backlight module 200 and a liquid crystal display module 300, the backlight module 200 includes a first chip and a first communication unit, the first chip is electrically connected to the power module 100, and the first communication unit is arranged on the first chip; the liquid crystal display module 300 includes a second chip and a second communication unit, and the second chip is electrically connected to the power module.
[0029] It should be noted that by sharing a power module 100 for the backlight module 200 and the liquid crystal display module 300, on the one hand, the power module of the backlight module 200 can be reduced, the circuit design is simplified, and the production cost is reduced; on the other hand, the failure rate of the circuit is reduced and the reliability of the product is improved. Among them, the first communication unit and the second communication unit are used for communication between the first chip and the second chip, the first chip is the main chip of the backlight module 200, and the second chip is the main chip of the liquid crystal display module 300.
[0030] Furthermore, in another embodiment, the liquid crystal display module 300 further includes a GPIO port, and the GPIO port is disposed on the second chip.
[0031] It should be noted that in the traditional method, the mainboard sends signals to the backlight module 200 and the liquid crystal display module 300. However, by setting a GPIO port, the second chip can control the backlight module 200 through the GPIO port, thereby simplifying debugging.
[0032] See also Figure 3In one embodiment, the power module 100 includes a third chip, an inductor L701 and a resistor R730, the first end of the inductor L701 is electrically connected to the third chip, the second end of the inductor L701 is electrically connected to the first end of the resistor R730, and the second end of the resistor R730 is electrically connected to the first chip and the second chip respectively.
[0033] It should be noted that the third chip is the main chip of the power module 100 , and its model may be U702. The inductor L701 plays a filtering role, and the resistor R730 plays a voltage dividing and current limiting role.
[0034] See also Figure 3 In one embodiment, the power module 100 further includes a resistor R728 and a resistor R729, a first end of the resistor R728 is electrically connected to the third chip, and a second end of the resistor R728 is electrically connected to the resistor R729.
[0035] It should be noted that the resistors R728 and R729 play the role of voltage division and current limiting.
[0036] See also Figure 3 In one embodiment, the power module 100 further includes a capacitor C720 and a capacitor C721, the first end of the capacitor C720 is electrically connected to the third chip, the second end of the capacitor C720 is grounded, the first end of the capacitor C721 is electrically connected to the first end of the capacitor C720, and the second end of the capacitor C721 is grounded.
[0037] It should be noted that capacitor C720 and capacitor C721 are filter capacitors.
[0038] See also Figure 3 In one embodiment, the power module 100 further includes a resistor R726 and a resistor R727, wherein a first end of the resistor R726 is electrically connected to a first end of the resistor R730, a second end of the resistor R726 is electrically connected to a third chip, a first end of the resistor R727 is electrically connected to the third chip, and a second end of the resistor R727 is grounded. It should be noted that the resistors R726 and R727 are voltage divider resistors.
[0039] See also Figure 3In one embodiment, the power module 100 further includes a capacitor C722, a capacitor C723, a capacitor C724, and a capacitor C725, wherein the first end of the capacitor C722 is electrically connected to the first end of the resistor R730, the second end of the capacitor C722 is grounded, the first end of the capacitor C723 is electrically connected to the first end of the resistor R730, the second end of the capacitor C723 is grounded, the first end of the capacitor C724 is electrically connected to the first end of the resistor R730, the second end of the capacitor C724 is grounded, the first end of the capacitor C725 is electrically connected to the first end of the resistor R730, and the second end of the capacitor C725 is grounded. It should be noted that the capacitors C722, C723, C724, and C725 are all filter capacitors.
[0040] See also Figure 2 In one embodiment, the first communication unit includes a first pin and a second pin, and the first pin and the second pin are arranged on the first chip. Specifically, the second communication unit includes a third pin and a fourth pin, and the third pin and the fourth pin are arranged on the second chip, the first pin is electrically connected to the third pin, and the second pin is electrically connected to the fourth pin. Specifically, the first communication unit includes a fifth pin and a sixth pin, and the fifth pin and the sixth pin are arranged on the first chip. Specifically, the second communication unit includes a seventh pin and an eighth pin, and the seventh pin and the eighth pin are arranged on the second chip, the seventh pin is electrically connected to the fifth pin, and the eighth pin is electrically connected to the sixth pin.
[0041] It should be noted that the second chip controls the first chip through the above pins to communicate with the first chip.
[0042] The scheme of the present application has been described in detail above with reference to the accompanying drawings. In the above embodiments, the descriptions of the various embodiments have their own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments. Those skilled in the art should also be aware that the actions and modules involved in the specification are not necessarily required for the present application. In addition, it can be understood that the steps in the method of the embodiment of the present application can be adjusted in order, merged and deleted according to actual needs, and the modules in the device of the embodiment of the present application can be merged, divided and deleted according to actual needs.
[0043] The embodiments of the present application have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to the technology in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.
Claims
1. A two-in-one driving module for backlight LED and liquid crystal display, characterized in that: include: Power module; A backlight module, the backlight module comprising a first chip and a first communication unit, the first chip is electrically connected to the power module, and the first communication unit is disposed on the first chip; A liquid crystal display module, wherein the liquid crystal display module comprises a second chip and a second communication unit, and the second chip is electrically connected to the power module.
2. The backlight LED and liquid crystal display two-in-one driving module according to claim 1, characterized in that: The power module includes a third chip, an inductor L701 and a resistor R730, wherein a first end of the inductor L701 is electrically connected to the third chip, a second end of the inductor L701 is electrically connected to a first end of the resistor R730, and a second end of the resistor R730 is electrically connected to the first chip and the second chip respectively.
3. The backlight LED and liquid crystal display two-in-one driving module according to claim 2, characterized in that: The power module further includes a resistor R728 and a resistor R729. A first end of the resistor R728 is electrically connected to the third chip, and a second end of the resistor R728 is electrically connected to the resistor R729.
4. The backlight LED and liquid crystal display two-in-one driving module according to claim 2, characterized in that: The power module also includes a capacitor C720 and a capacitor C721, wherein a first end of the capacitor C720 is electrically connected to the third chip, a second end of the capacitor C720 is grounded, a first end of the capacitor C721 is electrically connected to a first end of the capacitor C720, and a second end of the capacitor C721 is grounded.
5. The backlight LED and liquid crystal display two-in-one driving module according to claim 2, characterized in that: The power module also includes a resistor R726 and a resistor R727, wherein a first end of the resistor R726 is electrically connected to a first end of the resistor R730, a second end of the resistor R726 is electrically connected to the third chip, a first end of the resistor R727 is electrically connected to the third chip, and a second end of the resistor R727 is grounded.
6. The backlight LED and liquid crystal display two-in-one driving module according to claim 2, characterized in that: The power supply module also includes capacitor C722, capacitor C723, capacitor C724 and capacitor C725. The first end of the capacitor C722 is electrically connected to the first end of the resistor R730, and the second end of the capacitor C722 is grounded. The first end of the capacitor C723 is electrically connected to the first end of the resistor R730, and the second end of the capacitor C723 is grounded. The first end of the capacitor C724 is electrically connected to the first end of the resistor R730, and the second end of the capacitor C724 is grounded. The first end of the capacitor C725 is electrically connected to the first end of the resistor R730, and the second end of the capacitor C725 is grounded.
7. The backlight LED and liquid crystal display two-in-one driving module according to claim 1, characterized in that: The first communication unit includes a first pin and a second pin, and the first pin and the second pin are disposed on the first chip.
8. The backlight LED and liquid crystal display two-in-one driving module according to claim 7, characterized in that: The second communication unit includes a third pin and a fourth pin, wherein the third pin and the fourth pin are disposed on the second chip, the first pin is electrically connected to the third pin, and the second pin is electrically connected to the fourth pin.
9. The backlight LED and liquid crystal display two-in-one driving module according to claim 1, characterized in that: The first communication unit includes a fifth pin and a sixth pin, and the fifth pin and the sixth pin are disposed on the first chip.
10. The backlight LED and liquid crystal display two-in-one driving module according to claim 9, characterized in that: The second communication unit includes a seventh pin and an eighth pin, wherein the seventh pin and the eighth pin are disposed on the second chip, the seventh pin is electrically connected to the fifth pin, and the eighth pin is electrically connected to the sixth pin.