Improved device for testing backlight source at front section of liquid crystal display screen

Abstract

The utility model discloses a liquid crystal display front section test backlight source improved device, which comprises a backlight plate, a parallel connection wiring group, a wiring harness and an adjustable power supply, the backlight plate is connected with the parallel connection wiring group through the wiring harness, the other end of the parallel connection wiring group is connected with the adjustable power supply, and the adjustable power supply is connected with the backlight plate. The adjustable power supply comprises an adjusting knob, a digital display screen, an input power supply end, two output power supply ends and an adjustable voltage reduction module, the adjusting knob is arranged below the digital display screen, the two output power supply ends are arranged on the two sides of the input power supply end, and the adjustable voltage reduction module is installed in the adjustable power supply. The method has the beneficial effects that the stability of the brightness of the backlight source is ensured, and the front-section test yield is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid crystal display, in particular to a device for improving a backlight source for testing a front section of a liquid crystal display screen. Background Art

[0002] Liquid crystal display screens have become one of the indispensable components in daily life and industrial fields. In the production process, in order to ensure product quality, front-end testing of LCD screens is a crucial step. Among them, the backlight source is a key part that provides the light source required for display, and its performance directly affects the display effect of the display screen. The existing LCD screen test backlight source needs to be frequently charged and has a short battery life, unstable light source brightness, poor adaptability and other problems that seriously affect product testing quality and production efficiency. Utility Model Content

[0003] In view of the shortcomings of the prior art, the utility model provides an improved device for the front-end test backlight of a liquid crystal display screen, which has the advantages of ensuring the stability of the backlight brightness and thus improving the front-end test yield, thereby solving the problems of the existing liquid crystal display screen test backlight that require frequent charging and have a short battery life, unstable light source brightness, poor adaptability, and other problems that seriously affect product testing quality and production efficiency.

[0004] In order to achieve the above advantages of ensuring the stability of the backlight brightness and thus improving the front-end test yield, the specific technical solutions adopted by the utility model are as follows:

[0005] An improved device for testing backlight sources at the front end of a liquid crystal display screen comprises a backlight panel, a parallel wiring group, a wiring harness, and an adjustable power supply. The backlight panel is connected to the parallel wiring group through the wiring harness, and the other end of the wiring group is connected to the adjustable power supply. The adjustable power supply comprises an adjustment knob, a digital display screen, an input power supply terminal, an output power supply terminal, and an adjustable step-down module. The adjustment knob is arranged below the digital display screen, two groups of output power supply terminals are arranged on both sides of the input power supply terminal, and the adjustable step-down module is installed inside the adjustable power supply.

[0006] Furthermore, there are multiple groups of backlight panels, and protective films are arranged outside the multiple groups of backlight panels.

[0007] Furthermore, the number of the parallel wiring groups is an array, and both ends of the array parallel wiring groups are connected to the wiring harness.

[0008] Furthermore, the voltage regulation module is connected to the input power supply terminal.

[0009] Furthermore, the adjustment knob is connected to a voltage adjustment module.

[0010] Furthermore, the input power supply end and the output power supply end are provided with connection piles, and the connection piles are connected to the parallel wiring group through a wiring harness.

[0011] Compared with the prior art, the utility model provides an improved device for testing the backlight source of a front section of a liquid crystal display screen, which has the following beneficial effects:

[0012] The required output voltage is selected by adjusting the knob, and the output voltage value is displayed on the display screen. The adjusting knob is also connected to the output power supply terminal, which outputs the voltage selected by the adjustment knob. The output power supply terminal is connected to the wiring post, and the wiring post outputs the voltage, thereby obtaining the required voltage. It is then connected to the backlight panel through a parallel wiring group and a wiring harness, which ensures the stability of the backlight source brightness and thereby improves the front-end test yield. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 It is a structural schematic diagram of the utility model;

[0015] Figure 2 It is a side view of the adjustable power supply 4 in the utility model.

[0016] In the figure: backlight panel 1, parallel wiring group 2, wiring harness 3, adjustable power supply 4, adjustment knob 5, digital display screen 6, input power terminal 7, output power terminal 8, adjustable step-down module 9. DETAILED DESCRIPTION

[0017] To further illustrate each embodiment, the present invention provides drawings, which are part of the disclosure of the present invention and are mainly used to illustrate the embodiments. They can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, ordinary technicians in the field should be able to understand other possible implementation methods and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0018] According to an embodiment of the utility model, a device for improving a backlight source for front-end testing of a liquid crystal display screen is provided.

[0019] The present invention is now further described in conjunction with the accompanying drawings and specific implementation methods. Figure 1-2As shown, according to the embodiment of the utility model, the front-end test backlight source improvement device of the liquid crystal display screen comprises a backlight panel 1, and also comprises a parallel wiring group 2, a wiring harness 3, and an adjustable power supply 4. The backlight panel 1 is connected to the parallel wiring group 2 through the wiring harness 3, and the other end of the wiring group 2 is connected to the adjustable power supply 4. The adjustable power supply 4 comprises an adjusting knob 5, a digital display screen 6, an input power supply terminal 7, an output power supply terminal 8 and an adjustable step-down module 9. The adjusting knob 5 is arranged below the digital display screen 6, and two groups of output power supply terminals 8 are arranged on both sides of the input power supply terminal 7. The adjustable step-down module 9 is installed inside the adjustable power supply 4.

[0020] In one embodiment, the number of the backlight panels 1 is multiple, and a protective film is disposed outside the multiple groups of backlight panels 1, so as to protect the backlight panels 1 and reduce the chance of scratches and damage to the backlight panels 1.

[0021] In one embodiment, the number of the parallel wiring groups 2 is an array, and both ends of the array parallel wiring groups 2 are connected to the wiring harness 3 .

[0022] In one embodiment, the adjustable step-down module 9 is connected to the input power supply terminal 7 .

[0023] In one embodiment, the adjusting knob 5 is connected to the adjustable voltage reduction module 9 .

[0024] In one embodiment, the input power supply terminal 7 and the output power supply terminal 8 are provided with connection piles, which are connected to the parallel wiring group 2 through the wiring harness 3. The desired output voltage is selected by adjusting the knob 5, and the output voltage value is displayed on the display screen 6. The adjusting knob 5 is also connected to the output power supply terminal 8, and the output power supply terminal 8 outputs the voltage selected by the adjusting knob 5. The output power supply terminal 8 is connected to the connection pile, and the connection pile outputs the voltage, thereby obtaining the desired voltage.

[0025] Working principle: The required output voltage is selected by adjusting knob 5, and the output voltage value is displayed on display screen 6. Adjusting knob 5 is also connected to output power supply terminal 8, and output power supply terminal 8 outputs the voltage selected by adjusting knob 5. Output power supply terminal 8 is connected to wiring post, and wiring post outputs voltage, thereby obtaining the required voltage, and then connected to backlight panel 1 through parallel wiring group 2 and wiring harness 3, thereby ensuring the stability of backlight source brightness and improving front-end test yield.

[0026] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated 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. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0027] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An improved device for testing backlight source at the front end of a liquid crystal display screen, comprising a backlight plate (1), characterized in that: The invention also comprises a parallel wiring group (2), a wiring harness (3), and an adjustable power supply (4); the backlight panel (1) is connected to the parallel wiring group (2) through the wiring harness (3), and the other end of the wiring group (2) is connected to the adjustable power supply (4); the adjustable power supply (4) comprises an adjusting knob (5), a digital display screen (6), an input power supply terminal (7), an output power supply terminal (8), and an adjustable voltage reduction module (9); the adjusting knob (5) is arranged below the digital display screen (6), two groups of output power supply terminals (8) are arranged on both sides of the input power supply terminal (7), and the adjustable voltage reduction module (9) is installed inside the adjustable power supply (4).

2. The device for improving the backlight source of the front-end test of a liquid crystal display according to claim 1, characterized in that: The number of the backlight panels (1) is multiple groups, and protective films are arranged outside the multiple groups of backlight panels (1).

3. The LCD front-end test backlight improvement device according to claim 1, characterized in that: The number of the parallel wiring groups (2) is an array, and both ends of the parallel wiring groups (2) are connected to the wiring harness (3).

4. The LCD front-end test backlight improvement device according to claim 1, characterized in that: The adjustable voltage reduction module (9) is connected to the input power supply terminal (7).

5. The LCD front-end test backlight improvement device according to claim 1, characterized in that: The adjusting knob (5) is connected to the adjustable voltage reduction module (9).

6. The LCD front-end test backlight improvement device according to claim 1, characterized in that: The input power supply end (7) and the output power supply end (8) are provided with connection piles, and the connection piles are connected to the parallel connection group (2) through a wiring harness (3).

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