CN220752476U

CN220752476U - Double-backlight liquid crystal display screen

Info

Publication number: CN220752476U
Application number: CN202322295336.2U
Authority: CN
Inventors: 庄少校; 杨磊; 黄芬; 樊劼
Original assignee: Truly Opto Electronics Ltd
Current assignee: Truly Opto Electronics Ltd
Priority date: 2023-08-24
Filing date: 2023-08-24
Publication date: 2024-04-09
Anticipated expiration: 2033-08-24

Abstract

The utility model discloses a double-backlight liquid crystal display screen, which is characterized in that: the backlight module comprises a TFT liquid crystal screen, a backlight module and an FPC, wherein the backlight module comprises a main backlight module and a small backlight module, the main backlight module is correspondingly connected to the back of a main display area of the TFT liquid crystal screen and provides backlight for the main display area of the TFT liquid crystal screen, the small backlight module is correspondingly connected to the back of a secondary display area of the TFT liquid crystal screen and provides backlight for the secondary display area of the TFT liquid crystal screen, and the FPC is respectively connected with the main backlight module and the small backlight module and independently supplies power for the main backlight module and the small backlight module. The double backlight is matched with a TFT liquid crystal glass design, the double backlight power supply circuit is an independent circuit, the double backlight is a main backlight and a small backlight respectively, and when a user only needs to look over the display screen status bar, the small backlight is only turned on to illuminate the display screen status bar. And the main backlight is not turned on, so that the power consumption is reduced.

Description

Double-backlight liquid crystal display screen

Technical Field

The utility model relates to the technical field of liquid crystal displays, in particular to a double-backlight liquid crystal display.

Background

TFT (Thin Film Transistor) is a thin film field effect transistor. By thin film transistor, it is meant that each liquid crystal pixel on the liquid crystal display is driven by a thin film transistor integrated therein. Therefore, the screen information can be displayed at high speed, high brightness and high contrast, and the TFT belongs to an active matrix liquid crystal display. The LED is widely applied to the field of illumination due to the advantages of no pollution, good color rendering, energy saving and the like, and gradually replaces a cold cathode fluorescent lamp tube in the application fields of display equipment such as a liquid crystal television, a notebook computer display and the like, so that the LED becomes a main liquid crystal display backlight source.

Most of the power consumption of the existing liquid crystal display comes from the backlight module, and when the liquid crystal display is lightened, the backlight module is fully started, so that the energy conservation and the energy consumption reduction are not facilitated.

Disclosure of Invention

The utility model aims at overcoming the defects of the prior art and provides a double-backlight liquid crystal display.

In order to solve the technical problems, the utility model provides the following technical scheme:

a dual backlight liquid crystal display, characterized in that: the backlight module comprises a TFT liquid crystal screen, a backlight module and an FPC, wherein the backlight module comprises a main backlight module and a small backlight module, the main backlight module is correspondingly connected to the back of a main display area of the TFT liquid crystal screen and provides backlight for the main display area of the TFT liquid crystal screen, the small backlight module is correspondingly connected to the back of a secondary display area of the TFT liquid crystal screen and provides backlight for the secondary display area of the TFT liquid crystal screen, and the FPC is respectively connected with the main backlight module and the small backlight module and independently supplies power for the main backlight module and the small backlight module.

Further, the main backlight module and the small backlight module are of rectangular structures, and the small backlight module is located on the upper side of the main backlight module.

Further, the size of the small backlight module is smaller than that of the main backlight module.

Further, the FPC comprises a main FPC, a main backlight FPC and a small backlight FPC, wherein the main FPC is connected with the main backlight module through the main backlight FPC, and the main FPC is connected with the small backlight module through the small backlight FPC.

Further, the main FPC, the main backlight FPC and the small backlight FPC are all arranged on the back surface of the backlight module.

Further, the main backlight FPC is connected with the bottom of the rear end of the main backlight module.

Further, the small backlight FPC is connected with the top of the rear end of the small backlight module.

Further, the main FPC, the main backlight FPC and the small backlight FPC are connected through tin-lead alloy welding.

Further, at least three welding points are arranged between the main FPC and the main backlight FPC and between the main FPC and the small backlight FPC.

Further, the main backlight module and the small backlight module comprise a frame, LED lamps and a light guide plate.

Compared with the prior art, the utility model has the beneficial effects that: the double-backlight is matched with a TFT liquid crystal glass design, the double-backlight power supply circuit is an independent circuit, the double-backlight is a main backlight and a small backlight respectively, and when a user only needs to look at the status bar of the display screen (namely, only looks at time or looks at whether information or incoming call exists or not), the small backlight is only turned on to illuminate the status bar of the display screen. And the main backlight is not turned on, so that the power consumption is reduced.

Drawings

FIG. 1 is a front elevational view of an embodiment of the present utility model;

FIG. 2 is a rear elevational view of the embodiment of the present utility model;

FIG. 3 is an enlarged perspective view of the structure shown at A in FIG. 1;

wherein: 1-TFT LCD, 2-main backlight module, 3-small backlight module, 4-main display area, 5-auxiliary display area, 6-main FPC, 7-main backlight FPC, 8-small backlight FPC.

Detailed Description

In order to enhance the understanding of the present utility model, the present utility model will be further described in detail with reference to the drawings, which are provided for the purpose of illustrating the present utility model only and are not to be construed as limiting the scope of the present utility model.

In the description of the present utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," "disposed," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, or can be communicated between two elements or the interaction relationship between the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Fig. 1-3 show a specific embodiment of a dual-backlight liquid crystal display screen, which comprises a TFT liquid crystal screen 1, a backlight module and an FPC, wherein the backlight module comprises a main backlight module 2 and a small backlight module 3, the main backlight module 2 is correspondingly connected to the back of a main display area 4 of the TFT liquid crystal screen 1, backlight is provided for the main display area 4 of the TFT liquid crystal screen 1, the small backlight module 3 is correspondingly connected to the back of a secondary display area 5 of the TFT liquid crystal screen 1, backlight is provided for the secondary display area 5 of the TFT liquid crystal screen 1, the FPC comprises a main FPC6, a main backlight FPC7 and a small backlight FPC8, the main FPC6 is connected with the main backlight module 2 through the main backlight FPC7, the main FPC6 is connected with the small backlight module 3 through the small backlight FPC8, and independent power is respectively supplied for the main backlight module 2 and the small backlight module 3.

The main backlight module 2 and the small backlight module 3 are rectangular structures, and the small backlight module 3 is positioned on the upper side of the main backlight module 2. The size of the small backlight module 3 is smaller than that of the main backlight module 2.

The main FPC6, the main backlight FPC7 and the small backlight FPC8 are all arranged on the back surface of the backlight module. The main backlight FPC7 is connected to the rear bottom of the main backlight module 2. The small backlight FPC8 is connected with the top of the rear end of the small backlight module 3.

Preferably, at least three welding points are respectively arranged between the main FPC6 and the main backlight FPC7 and between the main FPC6 and the small backlight FPC8 through tin-lead alloy welding connection.

The main backlight module 2 and the small backlight module 3 comprise structures such as a frame, LED lamps, a light guide plate and the like.

The dual backlight power supply circuit adopted in the above embodiment is an independent circuit, and the dual backlight is the main backlight module 2 and the small backlight module 3 respectively, and when a user only needs to look over the status bar of the display screen, only the small backlight module 2 is turned on to illuminate the secondary display area 5 corresponding to the status bar. The main backlight module 2 is not turned on, so that the power consumption is reduced.

The foregoing detailed description will set forth only for the purposes of illustrating the general principles and features of the utility model, and is not meant to limit the scope of the utility model in any way, but rather should be construed in view of the appended claims.

Claims

1. A dual backlight liquid crystal display, characterized in that: including TFT LCD screen (1), backlight unit, FPC, backlight unit includes main backlight unit (2) and little backlight unit (3), main backlight unit (2) are connected correspondingly the main display area (4) back of TFT LCD screen (1), provide backlight for main display area (4) of TFT LCD screen (1), little backlight unit (3) are connected correspondingly the vice display area (5) back of TFT LCD screen (1), provide backlight for vice display area (5) of TFT LCD screen (1), main backlight unit (2) and little backlight unit (3) are connected respectively to FPC, for main backlight unit (2) and little backlight unit (3) independent power supply.

2. A dual backlight liquid crystal display as defined in claim 1 wherein: the main backlight module (2) and the small backlight module (3) are of rectangular structures, and the small backlight module (3) is located on the upper side of the main backlight module (2).

3. A dual backlight liquid crystal display as defined in claim 1 wherein: the size of the small backlight module (3) is smaller than that of the main backlight module (2).

4. A dual backlight liquid crystal display as defined in claim 1 wherein: the FPC comprises a main FPC (6), a main backlight FPC (7) and a small backlight FPC (8), wherein the main FPC (6) is connected with the main backlight module (2) through the main backlight FPC (7), and the main FPC (6) is connected with the small backlight module (3) through the small backlight FPC (8).

5. A dual backlight liquid crystal display as defined in claim 4 wherein: the main FPC (6), the main backlight FPC (7) and the small backlight FPC (8) are all arranged on the back surface of the backlight module.

6. A dual backlight liquid crystal display as defined in claim 5 wherein: the main backlight FPC (7) is connected with the bottom of the rear end of the main backlight module (2).

7. A dual backlight liquid crystal display as defined in claim 5 wherein: the small backlight FPC (8) is connected with the top of the rear end of the small backlight module (3).

8. A dual backlight liquid crystal display as defined in claim 4 wherein: the main FPC (6), the main backlight FPC (7) and the small backlight FPC (8) are connected through tin-lead alloy welding.

9. A dual backlight liquid crystal display as defined in claim 8 wherein: at least three welding points are arranged between the main FPC (6) and the main backlight FPC (7) and between the main FPC (6) and the small backlight FPC (8).

10. A dual backlight liquid crystal display as defined in claim 1 wherein: the main backlight module (2) and the small backlight module (3) comprise a frame, LED lamps and a light guide plate.