LED drive control structure, LED lamp panel and display device
By integrating the LED driver unit into the active LED module and setting up the passive LED light-emitting unit independently, the problem of insufficient space occupied by the driver chip in the traditional AM driver solution is solved, and the requirements of high LED distribution density and multi-zone LCD backlight are achieved.
Patent Information
- Application Number
- CN202423182207.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Priority Date
- 2024-04-02
- Filing Date
- 2024-12-23
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2034-12-23
AI Technical Summary
Traditional AM driver solutions for LED light boards have insufficient area occupied by driver chips and wiring space to meet design requirements for high LED distribution density and ultra-thin, multi-zone LCD backlighting.
By adopting a design that integrates the LED driver unit into the active LED module, the passive LED light-emitting unit is independently set on the lamp board and connected to the active LED module through the driver output pin, so as to realize the driving of the first and second LED light-emitting units by the LED driver unit, eliminating the space for placing the LED driver chip separately.
It reduces or even eliminates the area occupied by the driver chip alone, increases the LED lamp arrangement density, and meets the requirements of high LED distribution density and multi-zone LCD backlight.
Smart Images
Figure CN223842612U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of LED liquid crystal display, and in particular to an LED driving control structure, an LED lamp board, and a display device. Background Technology
[0002] The LED backlight assembly for direct-lit multi-zone LCD backlighting includes two structures: a PM driving scheme and an AM driving scheme. The PM driving scheme is characterized by double-sided PCB layout and double-sided traces, with the LED driver chip and LED array on different circuit layers. The AM driving scheme, on the other hand, allows for single-sided layout and single-sided traces, with the LED driver chip and LED array on the same circuit layer.
[0003] Compared to AM (Ampere) lighting, traditional PM (partial-light) driving solutions are more complex in design and have higher PCB costs. In AM driving solutions, the LEDs and driver chips share the same circuit plane. As the LED distribution density increases, the area that the LED driver chip can occupy and the wiring space become smaller, which cannot meet the requirements of ultra-thin, multi-zone LCD backlighting.
[0004] Therefore, developing a driving scheme structure for LED lamp board components with high LED distribution density, ultra-thin design, and multiple zone LCD backlighting has become a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content
[0005] This invention provides an LED driver control structure, an LED light board, and a display device to solve the problem of how to reduce or even eliminate the area occupied by the driver chip alone.
[0006] According to a first aspect of the present invention, an LED driving control structure is provided, comprising:
[0007] An active LED module includes a first LED light-emitting unit and an LED driving unit; wherein the first LED light-emitting unit is integrated into the LED driving unit;
[0008] A passive LED module is connected to the active LED module; the passive LED module includes a second LED light-emitting unit; the second LED light-emitting unit is independently disposed on the lamp board;
[0009] The LED driving unit is used to drive the first LED light-emitting unit and the second LED light-emitting unit.
[0010] Optionally, the active LED module includes a drive output pin;
[0011] The second LED light-emitting unit is connected to the first LED light-emitting unit and the LED driving unit through the driving output pin.
[0012] Optionally, the number of the second LED light-emitting units is one or more; wherein, when the number of the second LED light-emitting units is two or more, the plurality of the second LED light-emitting units are connected in series.
[0013] Optionally, the number of the second LED light-emitting units is two or more.
[0014] Optionally, the active LED module includes two or more of the aforementioned drive output pins;
[0015] Wherein, two or more second LED light-emitting units are respectively connected to the first LED light-emitting unit and the LED driving unit through the corresponding driving output pin;
[0016] When the drive output pin is connected to two or more second LED light-emitting units, the plurality of second LED light-emitting units connected to each drive output pin are connected in series.
[0017] Optionally, the LED driving unit can simultaneously drive the corresponding second LED light-emitting unit through different driving output pins, or drive the corresponding second LED light-emitting unit in a time-division manner.
[0018] Optionally, the LED driving unit is a high-side driving unit or a low-side driving unit.
[0019] According to a second aspect of the present invention, an LED light board is provided, comprising at least one of the LED driving control structures described in any one of the first aspects of the present invention.
[0020] According to a third aspect of the present invention, a display device is provided, comprising the LED light panel described in the second aspect of the present invention.
[0021] This utility model provides an LED driving control structure that integrates the first LED light-emitting unit into the LED driving unit to form an active LED module; and connects the second LED light-emitting unit, which is independently set on the lamp board, to the active LED module; thereby enabling the LED driving unit to drive both the first and second LED light-emitting units. It is evident that the technical solution provided by this utility model, through the design of an LED driving unit integrated with the first LED light-emitting unit, replaces the traditional solution that requires a separate LED driving unit, freeing up space for a separate LED driving chip, thus reducing or even eliminating the area occupied by the driving chip alone, while also reducing the space occupied by wiring, thereby increasing the LED lamp arrangement density. Attached Figure Description
[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0023] Figure 1 This is a schematic diagram of a module of an LED driver control structure provided in an embodiment of the present invention;
[0024] Figure 2 This is a schematic diagram of an LED driving control structure provided in one embodiment of the present invention. Figure 1 ;
[0025] Figure 3 This is a schematic diagram of an LED driving control structure provided in one embodiment of the present invention. Figure 2 ;
[0026] Figure 4 This is a schematic diagram of the structure of an LED light board provided in one embodiment of the present invention. Figure 1 ;
[0027] Figure 5 This is a schematic diagram of the structure of an LED light board provided in one embodiment of the present invention. Figure 2 ;
[0028] Figure 6 This is a schematic diagram of the specific structure of an active LED module provided in one embodiment of the present invention. Figure 1 ;
[0029] Figure 7 This is a schematic diagram of the specific structure of an active LED module provided in one embodiment of the present invention. Figure 2 ;
[0030] Figure 8-11 These are schematic diagrams illustrating the specific structures of different active LED modules provided in other typical examples of this utility model;
[0031] Explanation of reference numerals in the attached figures:
[0032] 1-LED driver control structure;
[0033] 10- Passive LED module;
[0034] 101 - Second LED light-emitting unit;
[0035] 11-Active LED module;
[0036] 110-LED driver unit;
[0037] 111 - First LED light-emitting unit. Detailed Implementation
[0038] The technical solutions of the present utility model 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 utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0039] The terms "first," "second," "third," "fourth," etc. (if present) in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of the utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.
[0040] In the traditional AM driver solution, since the LED and the driver chip share the same circuit plane, the remaining usable area and wiring space of the driver chip will decrease as the demand for increasingly higher LED distribution density increases. In the traditional AM driver solution's lamp board structure, since the LED and the driver chip have independent design schemes, the driver chip often occupies a large space. Therefore, the traditional AM driver solution's lamp board structure cannot meet the requirements of ultra-thin, multi-zone LCD backlighting.
[0041] Therefore, it is necessary to reduce or even eliminate the area occupied by the driver chip alone in order to manufacture an LED lamp board assembly with high LED distribution density, ultra-thin design, and multiple zones of LCD backlight.
[0042] In view of this, the inventors of this application propose an LED driving control structure, including an LED array arranged on one side of a single-sided PCB; the LED array consists of two types of LED light-emitting units, specifically including: active LED light-emitting units and passive LED light-emitting units; wherein, the passive LED light-emitting unit includes a single-unit packaged LED lamp, and the active LED unit includes an LED lamp with an integrated LED driving module; the single-unit packaged LED lamp in the passive LED unit is connected to the LED driving module in the passive LED unit and the LED lamp; thereby realizing the control of the LED driving module over the integrated LED lamp and the single-unit packaged LED lamp connected to it. In the technical solution provided by this utility model, the separately placed LED driving chip in the AM driving scheme structure is eliminated, and instead, the LED driving module integrated in the active LED unit is used to replace it; therefore, it is not necessary to reserve a position for the driving chip in the gap between the LEDs, reducing or even eliminating the area occupied by the driving chip alone, and increasing the LED lamp arrangement density; thus providing an LED lamp board assembly for high LED distribution density, ultra-thin, and multi-zone LCD backlight requirements.
[0043] The technical solution of this utility model will be described in detail below with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments.
[0044] Please refer to Figures 1-7 According to one embodiment of the present invention, an LED driving control structure 1 is provided, such as... Figure 1 As shown, the structure includes:
[0045] The active LED module 11 includes a first LED light-emitting unit 111 and an LED driving unit 110; wherein the first LED light-emitting unit 111 is integrated into the LED driving unit 110.
[0046] A passive LED module 10 is connected to the active LED module 11; the passive LED module 10 includes a second LED light-emitting unit 101; the second LED light-emitting unit 101 is independently disposed on the lamp board;
[0047] The LED driving unit 110 is used to drive the first LED light-emitting unit 111 and the second LED light-emitting unit 101.
[0048] The first LED light-emitting unit 111 or the second LED light-emitting unit 101 is an LED lamp.
[0049] In the LED driving control structure 1 provided by this utility model, the ratio of the first LED light-emitting unit 111 to the second LED light-emitting unit 101 is variable, which can be achieved in the following ways, as described in the first and second specific embodiments: First, please refer to... Figure 2 and Figure 7 In one specific embodiment, such as Figure 7 As shown, the active LED module 11 includes a drive output pin;
[0050] The second LED light-emitting unit 101 is connected to the first LED light-emitting unit 111 and the LED driving unit 110 through the driving output pin.
[0051] The active LED module 11 also includes LED pins connected to the first LED light-emitting unit 111, and two driving module power supply pins and driving module signal pins connected to the LED driving unit 110. The aforementioned pins are all conventional pin configurations of traditional driving chips, and will not be described in detail here. In one embodiment, the number of the second LED light-emitting units 101 is one or more; wherein, when the number of the second LED light-emitting units 101 is two or more, a plurality of the second LED light-emitting units 101 are connected in series (not shown in the figure).
[0052] In one specific implementation, such as Figure 2 As shown, one partition in the LED driver control structure 1 consists of an LED driver unit 110 and two LEDs connected in series: one is an LED in the active LED module 11, and the other is an LED in the passive LED module 10. In this embodiment, the driver module in the active LED module 11 can drive only one LED partition.
[0053] In other specific embodiments, in one partition of the LED driver control structure 1, the number of LEDs in the passive LED module 10 can be greater than one. In this case, the ratio between the LEDs in the passive LED module 10 and the LEDs in the active LED module 11 is greater than 1. For example, when an LED in one active LED module 11 is connected to two LEDs in two active LED modules 11, the ratio of the first LED light-emitting unit 111 to the second LED light-emitting unit 101 is 1:2 (not shown in the figure).
[0054] Secondly, please refer to Figure 3 and Figure 6When the number of paths achievable by the LED driver module in the active LED module 11 is greater than 1, the ratio of the first LED light-emitting unit 111 and the second LED light-emitting unit 101 in the LED driver control structure 1 will also change. In one specific embodiment, the number of the second LED light-emitting unit 101 is two or more.
[0055] In one implementation, such as Figure 6 As shown, the active LED module 11 includes two or more of the aforementioned drive output pins;
[0056] Two or more second LED light-emitting units 101 are connected to the first LED light-emitting unit 111 and the LED driving unit 110 respectively through the corresponding driving output pins; wherein each driving output pin is connected to an LED partition, it can be seen that the LED driving unit 110 in the active LED module 11 can drive two or more LED partitions.
[0057] like Figure 3 As shown, when the drive output pin is connected to two or more second LED light-emitting units 101, the plurality of second LED light-emitting units 101 connected to each drive output pin are connected in series.
[0058] In one specific example, the ratio of the first LED light-emitting unit 111 to the second LED light-emitting unit 101 is 1:11.
[0059] One section of the LED driver control structure 1 consists of 6 LEDs, including one first LED light-emitting unit 111 and 11 second LED units. The LED driver unit 110 in the active LED module 11 can drive both LED sections.
[0060] In one embodiment, the LED driving unit 110 drives the corresponding second LED light-emitting unit 101 simultaneously through different driving output pins, or drives the corresponding second LED light-emitting unit 101 in a time-division manner.
[0061] In one embodiment, the LED driving unit 110 is a high-side driving unit or a low-side driving unit.
[0062] In summary, the LED driving control structure 1 provided by this utility model integrates the first LED light-emitting unit 111 into the LED driving unit 110, freeing up space for a separate LED driving chip. While enabling the LED driving unit 110 to drive the first LED light-emitting unit 111 and the second LED light-emitting unit 101, it reduces or even eliminates the additional space occupied by the LED driving chip and increases the LED arrangement density.
[0063] According to one embodiment of the present invention, an LED light board is also provided, including at least one of the LED driving control structures 1 described in any of the foregoing embodiments of the present invention.
[0064] When the active LED module 11 includes one of the drive output pins, the LED light board may include several sets of LED drive control structures 1; when it includes two sets of LED drive control structures 1, the structure of the LED light board is as follows: Figure 4 As shown.
[0065] When the active LED module 11 includes two or more drive output pins, the LED light board may include several sets of LED drive control structures 1; when it includes eight sets of LED drive control structures 1, the structure of the LED light board is as follows: Figure 5 As shown.
[0066] In other embodiments of this invention, the number of drive output pins may be two or more.
[0067] In a typical example, such as Figure 8 As shown, for example, there can be 3, corresponding to each drive output pin. The number of the second LED light-emitting units connected can be, for example, 4, and the number of the first LED light-emitting units connected can be, for example, 4.
[0068] In one embodiment of this utility model, the number of LEDs in the first LED light-emitting unit can be two or more. When the number of LEDs in the first LED light-emitting unit can be two or more, the connection method between the first LED light-emitting unit and the second LED light-emitting unit is similar to that described in the foregoing embodiments, and will not be repeated here.
[0069] In one embodiment, two or more LEDs are connected in parallel in the first LED light-emitting unit.
[0070] In a typical example, such as Figure 9 As shown, the first LED light-emitting unit has two LEDs, and the two LEDs are connected in parallel. Specifically, one LED is connected to the LED driving unit, and the other LED is connected to the driving output pin.
[0071] In another embodiment, in the first LED light-emitting unit, two or more LEDs are connected in series.
[0072] In a typical example, such as Figure 10As shown, the first LED light-emitting unit has two LEDs connected in series; a corresponding drive output pin is provided, and the drive output pin is connected to the second LED light-emitting unit, which includes two LEDs connected in series.
[0073] Other typical examples include, for example Figure 11 As shown, the first LED light-emitting unit has 4 LEDs and a corresponding drive output pin. Two of the LEDs are connected to the drive output pin and are connected in series. The other two LEDs are connected to the LED drive unit and are connected in series.
[0074] According to another embodiment of the present invention, a display device is provided, including the LED light board described in the foregoing embodiments of the present invention.
[0075] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.
Claims
1. An LED driving control structure, characterized in that, include: An active LED module includes a first LED light-emitting unit and an LED driving unit; wherein the first LED light-emitting unit is integrated into the LED driving unit; A passive LED module is connected to the active LED module; the passive LED module includes a second LED light-emitting unit; the second LED light-emitting unit is independently disposed on the lamp board; The LED driving unit is used to drive the first LED light-emitting unit and the second LED light-emitting unit.
2. The LED driving control structure according to claim 1, characterized in that, The active LED module includes a drive output pin; The second LED light-emitting unit is connected to the first LED light-emitting unit and the LED driving unit through the driving output pin.
3. The LED driving control structure according to claim 2, characterized in that, The number of the second LED light-emitting units is one or more; wherein, when the number of the second LED light-emitting units is two or more, the second LED light-emitting units are connected in series.
4. The LED driving control structure according to claim 1, characterized in that, The number of the second LED light-emitting units is two or more.
5. The LED driving control structure according to claim 4, characterized in that, The active LED module includes two or more of the aforementioned drive output pins; Wherein, two or more second LED light-emitting units are respectively connected to the first LED light-emitting unit and the LED driving unit through the corresponding driving output pin; When the drive output pin is connected to two or more second LED light-emitting units, the plurality of second LED light-emitting units connected to each drive output pin are connected in series.
6. The LED driving control structure according to claim 5, characterized in that, The LED driving unit drives the corresponding second LED light-emitting unit simultaneously through different driving output pins, or drives the corresponding second LED light-emitting unit in a time-division manner.
7. The LED driving control structure according to claim 1, characterized in that, The LED driving unit is either a high-side driving unit or a low-side driving unit.
8. An LED light panel, characterized in that, Includes at least one of the LED driving control structures as described in any one of claims 1-7.
9. A display device, characterized in that, Includes the LED light panel as described in claim 8.