CN111273483A - Long-life LCD (liquid crystal display) screen backlight mechanism and working method thereof - Google Patents
Long-life LCD (liquid crystal display) screen backlight mechanism and working method thereof Download PDFInfo
- Publication number
- CN111273483A CN111273483A CN202010094393.2A CN202010094393A CN111273483A CN 111273483 A CN111273483 A CN 111273483A CN 202010094393 A CN202010094393 A CN 202010094393A CN 111273483 A CN111273483 A CN 111273483A
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- China
- Prior art keywords
- backlight
- long
- life
- control board
- lcd screen
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133603—Direct backlight with LEDs
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/3406—Control of illumination source
Abstract
The invention relates to a long-service-life LCD (liquid crystal display) screen backlight mechanism and a working method thereof. The backlight mechanism is provided with two light bars and a PCB control board card, and the two light bars are driven by the PCB control board card to be lighted at the bottom of intersection, so that the service life of the backlight is prolonged by about one time; meanwhile, the reliability of the product is improved, one side of the lamp strips at the two sides can be defined as an alternative, and the problem that the whole LCD screen is scrapped due to the damage of the backlight lamp strips is avoided; the lamp strips are installed on two sides, the appearance and the performance of the product are not affected, the realization is simple, and the installation is convenient.
Description
Technical Field
The invention relates to the field of LCD screens, in particular to a long-service-life LCD screen backlight mechanism and a working method thereof.
Background
It is well known that the upper limit of life of LCD panel products depends on the backlight. When the service life of the backlight reaches the limit, if the product is to be used continuously, only the backlight can be replaced or the whole machine can be replaced.
Taking the on-vehicle LCD screen equipment of track as an example, when the backlight life-span reached the limit, no matter change the backlight or the complete machine is changed, to the vehicle, work load all is very huge, can consume a lot of resources, consequently, it is inevitable demand to improve the life-span of being shaded.
Disclosure of Invention
The invention aims to provide a long-service-life LCD (liquid crystal display) screen backlight mechanism and a working method thereof, which are used for solving the problem of short service life of the LCD screen backlight in the prior art.
The invention provides a long-service-life LCD screen backlight mechanism which comprises a backlight module and a control module, wherein the backlight module comprises two light bars, an optical module is arranged between the two light bars, two backlight driving output interfaces are arranged on the control module, and the two backlight driving output interfaces are respectively connected with the two light bars.
Furthermore, the backlight driving output interface is connected with the light bar through a light bar driving cable.
Further, the control module is a PCB control board card.
The invention further provides a working method of the long-service-life LCD screen backlight mechanism.
Further, the alternate lighting of two LED lamp strips driven by the PCB control board card is specifically: the PCB control board card drives the light bar A to be lightened and the light bar B to be not lightened after the power is turned on for the first time; and (4) turning off the power supply, electrifying again, lighting the lamp strip B, and not lighting the lamp strip A, and repeating the steps.
The technical scheme of the invention has the beneficial effects that:
the backlight mechanism is provided with two light bars and a PCB control board card, and the two light bars are driven by the PCB control board card to be lighted at the bottom of intersection, so that the service life of the backlight is prolonged by about one time; meanwhile, the reliability of the product is improved, one side of the lamp strips at the two sides can be defined as an alternative, and the problem that the whole LCD screen is scrapped due to the damage of the backlight lamp strips is avoided; the lamp strips are installed on two sides, the appearance and the performance of the product are not affected, the realization is simple, and the installation is convenient.
Drawings
FIG. 1 is a schematic structural diagram of a long-life LCD backlight mechanism according to the present invention;
in the drawings, the components represented by the respective reference numerals are listed below:
the system comprises a control module, a light bar, a 3-optical module and a 4-light bar driving cable.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention.
As shown in fig. 1, in one aspect, the present invention provides a long-life LCD screen backlight mechanism, which includes a backlight module and a control module 1, wherein the backlight module includes two light bars 2, an optical module 3 is disposed between the two light bars 2, the optical module 3 is a light guide plate or a diffusion sheet, two backlight driving output interfaces are disposed on the control module 1, the two backlight driving output interfaces are respectively connected to the two light bars 2, specifically, the backlight driving output interfaces are connected to the light bars 2 through light bar driving cables 4, and the control module 1 is a PCB control board card. In this embodiment, the lamp strips and the optical module are installed inside the LCD screen, and the PCB control board of the control module 1 drives the two lamp strips 2 to be turned on.
The working method of the long-service-life LCD screen backlight mechanism comprises the following steps: two LED lamp strip 2 of PCB control board drive are lighted in turn, and it lights one of them lamp strip 2 to go up electric automatic switch at every turn, specifically is: the PCB control board card drives the light bar A to be lightened and the light bar B to be not lightened after the power is turned on for the first time; and (4) turning off the power supply, electrifying again, lighting the lamp strip B, and not lighting the lamp strip A, and repeating the steps.
In conclusion, the backlight mechanism is provided with the two light bars and the PCB control board card, and the two light bars are driven by the PCB control board card to be lighted at the bottom of intersection, so that the service life of the backlight is prolonged by about one time; meanwhile, the reliability of the product is improved, one side of the lamp strips at the two sides can be defined as an alternative, and the problem that the whole LCD screen is scrapped due to the damage of the backlight lamp strips is avoided; the lamp strips are installed on two sides, the appearance and the performance of the product are not affected, the realization is simple, and the installation is convenient.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (5)
1. The long-service-life LCD screen backlight mechanism is characterized by comprising a backlight module and a control module, wherein the backlight module comprises two lamp bars, an optical module is arranged between the two lamp bars, two backlight driving output interfaces are arranged on the control module, and the two backlight driving output interfaces are respectively connected with the two lamp bars.
2. The long-life LCD screen backlight mechanism of claim 1, wherein the backlight driving output interface is connected to the light bar via a light bar driving cable.
3. The long-life LCD screen backlight mechanism of claim 1, wherein the control module is a PCB control board.
4. A working method of a long-service-life LCD screen backlight mechanism is characterized in that a PCB control board card drives two LED lamp strips to be alternately lightened, and one of the LED lamp strips is automatically switched to be lightened after being electrified every time.
5. The working method of the long-life LCD screen backlight mechanism as claimed in claim 4, wherein the step of driving the two LED light bars to be alternately lighted by the PCB control board card is as follows: the PCB control board card drives the light bar A to be lightened and the light bar B to be not lightened after the power is turned on for the first time; and (4) turning off the power supply, electrifying again, lighting the lamp strip B, and not lighting the lamp strip A, and repeating the steps.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010094393.2A CN111273483A (en) | 2020-02-15 | 2020-02-15 | Long-life LCD (liquid crystal display) screen backlight mechanism and working method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010094393.2A CN111273483A (en) | 2020-02-15 | 2020-02-15 | Long-life LCD (liquid crystal display) screen backlight mechanism and working method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111273483A true CN111273483A (en) | 2020-06-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010094393.2A Pending CN111273483A (en) | 2020-02-15 | 2020-02-15 | Long-life LCD (liquid crystal display) screen backlight mechanism and working method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111273483A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201363668Y (en) * | 2009-03-11 | 2009-12-16 | 冠捷投资有限公司 | Sidelight type back light module |
| CN101923841A (en) * | 2010-08-17 | 2010-12-22 | 深圳市华星光电技术有限公司 | Backlight module and liquid crystal display |
| CN104865746A (en) * | 2015-04-21 | 2015-08-26 | 友达光电股份有限公司 | Backlight module with light-emitting mode switching design and display module using same |
| CN104930387A (en) * | 2015-06-11 | 2015-09-23 | 合肥鑫晟光电科技有限公司 | LED lamp strip structure, controlling method of LED lamp strip structure, backlight module and liquid-crystal display device |
-
2020
- 2020-02-15 CN CN202010094393.2A patent/CN111273483A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201363668Y (en) * | 2009-03-11 | 2009-12-16 | 冠捷投资有限公司 | Sidelight type back light module |
| CN101923841A (en) * | 2010-08-17 | 2010-12-22 | 深圳市华星光电技术有限公司 | Backlight module and liquid crystal display |
| CN104865746A (en) * | 2015-04-21 | 2015-08-26 | 友达光电股份有限公司 | Backlight module with light-emitting mode switching design and display module using same |
| CN104930387A (en) * | 2015-06-11 | 2015-09-23 | 合肥鑫晟光电科技有限公司 | LED lamp strip structure, controlling method of LED lamp strip structure, backlight module and liquid-crystal display device |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200612 |
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| RJ01 | Rejection of invention patent application after publication |