CN208954614U - The LCD liquid crystal display die set of display is kept after a kind of power down - Google Patents
The LCD liquid crystal display die set of display is kept after a kind of power down Download PDFInfo
- Publication number
- CN208954614U CN208954614U CN201821887133.5U CN201821887133U CN208954614U CN 208954614 U CN208954614 U CN 208954614U CN 201821887133 U CN201821887133 U CN 201821887133U CN 208954614 U CN208954614 U CN 208954614U
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- power down
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- chip
- lcd
- liquid crystal
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Abstract
The utility model discloses the LCD liquid crystal display die sets that display is kept after a kind of power down; including LCD display, LED backlight and power down protection drive circuit board; the LED backlight is placed in LCD display medial surface; power down protection drive circuit board is installed on the lower end surface of LED backlight and LCD display; the power down protection drive circuit board is connect with the pin that LED backlight is led to, and is weldingly connected between the power down protection drive circuit board and LCD display by the metal pin on LCD and is formed a complete LCD liquid crystal display die set.The utility model liquid crystal display die set can keep display current picture data after system power supply power down, realize the effect that data storage protection is shown after power down, it is therefore prevented that show the function of loss of data.It is widely used in the instrument and meter for having uninterrupted display to require.
Description
Technical field
The utility model relates to a kind of liquid crystal display die set, the LCD liquid crystal display of display is kept after specifically a kind of power down
Mould group.
Background technique
Liquid crystal display die set is simply exactly to shield+back light unit.The display unit of LCD TV is exactly liquid crystal module,
Its status is equivalent to the kinescope in CRT.Other parts include power circuit, signal processing circuit etc..
Principal display device of the liquid crystal display die set as display number, fixed text, character etc., be widely used in industry,
The numerous areas such as civilian, communal facility.Display data are wherein required not interrupt on special installation, display data are not lost.And mesh
Preceding common liquid crystals display module lacks this function, and current display data can be lost after system is powered down, can not continue to show.
Utility model content
The purpose of this utility model is to provide the LCD liquid crystal display die sets that display is kept after a kind of power down, on solving
State the problem of proposing in background technique.
To achieve the above object, the utility model provides the following technical solutions:
The LCD liquid crystal display die set of display, including LCD display, LED backlight and power down protection are kept after a kind of power down
Drive circuit board, the LED backlight are placed in LCD display medial surface, and power down protection drive circuit board is installed on LED backlight
The lower end surface in source and LCD display, the power down protection drive circuit board and LED backlight pass through the pin in LED backlight
Connection is weldingly connected by the metal pin on LCD between the power down protection drive circuit board and LCD display and forms one
Complete LCD liquid crystal display die set.
As a preferred embodiment of the present invention: the power down protection drive circuit board includes chip U1, chip U2 and core
The input terminal of piece U3, chip U1 connects resistance R1, and the output end of the other end connection chip U1 of resistance R1 and chip U2's is defeated
Enter end, the input terminal of output end connection the resistance R2 and chip U3 of chip U2, the output end of chip U3 connects COM signal, resistance
The other end of R2 connects capacitor C1, the other end ground connection of capacitor C1.
As a preferred embodiment of the present invention: the chip U1, chip U2 and chip U3 are phase inverter.
As a preferred embodiment of the present invention: the capacitor C1 is farad capacitor.
As a preferred embodiment of the present invention: the LED backlight is using the luminous SMT SMD lamp in two sides.
Compared with prior art, the utility model has the beneficial effects that the utility model liquid crystal display die set can be
It unites and keeps display current picture data after power supply power-fail, realize the effect for show data storage protection after power down, it is therefore prevented that show
Show the function of loss of data.It is widely used in the instrument and meter for having uninterrupted display to require.
Detailed description of the invention
Fig. 1 is the configuration schematic diagram of the utility model.
Fig. 2 is the power down protection drive circuit board circuit diagram of the utility model.
In figure: 1-LCD display screen, 2-LED backlight, 3- power down protection drive circuit board.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
Embodiment 1 referring to FIG. 1-2: in the utility model embodiment, the LCD liquid crystal of display is kept after a kind of power down
Show mould group, including LCD display 1, LED backlight 2 and power down protection drive circuit board 3, the LED backlight 2 is placed in LCD
1 medial surface of display screen, power down protection drive circuit board 3 are installed on the lower end surface of LED backlight 2 and LCD display 1, it is described fall
Electric protection drive circuit board 3 is connect with LED backlight 2 by pin, the power down protection drive circuit board 3 and LCD display 1
Between by the metal pin on LCD be weldingly connected composition one complete LCD liquid crystal display die set.Power down protection driving circuit
Plate is the core place of the utility model, and stating includes a DAT signal adapter, CLK level on power down protection drive circuit board
Converter, FRM signal adapter, COM signal generator and the power down protection modular circuit being made of farad capacitor.The COM
Generator is provided with the first to six pin, and the DAT signal adapter is provided with the 8th pin, and the CLK level translator is set
It is equipped with the 7th pin, FRM signal adapter is provided with the 9th pin, forms COM signal hair by chip U1, chip U2, chip U3
Raw device and ALT signal generator.System electrification, C1 farad capacitor store charge, by powering in level process inside chip U1
The output of portion's logical inversion, through resistance R1 the first and second pin of loop input, to generate the output concussion of circulation, output passes through again
Third and fourth pin input inversion shaping of chip U2 generates rectangular wave and does ALT signal.The the five, the six of ALT signal input chip U3 draw
Foot generates the COM signal opposite and synchronous with ALT signal by chip U3 logical inversion.After system is powered down, C1 farad capacitor is released
Electric discharge lotus gives chip U1, chip U2, and chip U3, COM signal generator maintains exporting for COM signal to drive display picture to LCD
Face.CLK, DAT, FRM signal that power down protection module board is provided using MCU chip input to level translator chip respectively
U4, chip U5, chip U6 provide the storage of display data signal after power down for LCD driving circuit.
Embodiment 2: on the basis of embodiment 1, the LED backlight 2 of the design is using the luminous SMT SMD lamp in two sides, no
It is only small in size, and integrated level is high, and packaging effect is good, is suitable as the light source of the design.
It is obvious to a person skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and
And without departing substantially from the spirit or essential attributes of the utility model, it can realize that this is practical new in other specific forms
Type.Therefore, in all respects, the present embodiments are to be considered as illustrative and not restrictive, this is practical new
The range of type is indicated by the appended claims rather than the foregoing description, it is intended that containing for the equivalent requirements of the claims will be fallen in
All changes in justice and range are embraced therein.It should not treat any reference in the claims as limiting
Related claim.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (5)
1. keeping the LCD liquid crystal display die set of display, including LCD display (1), LED backlight (2) and power down after a kind of power down
It protects drive circuit board (3), which is characterized in that the LED backlight (2) is placed in LCD display (1) medial surface, and power down is protected
Shield drive circuit board (3) is installed on the lower end surface of LED backlight (2) and LCD display (1), the power down protection driving circuit
Plate (3) is connect with LED backlight (2) by pin, is led between the power down protection drive circuit board (3) and LCD display (1)
The metal pin crossed on LCD, which is weldingly connected, forms a complete LCD liquid crystal display die set.
2. keeping the LCD liquid crystal display die set of display after a kind of power down according to claim 1, which is characterized in that described
Power down protection drive circuit board (3) includes chip U1, chip U2 and chip U3, and the input terminal of chip U1 connects resistance R1, resistance
The output end of the other end connection chip U1 of R1 and the input terminal of chip U2, the output end of chip U2 connect resistance R2 and chip U3
Input terminal, the output end of chip U3 connects COM signal, and the other end of resistance R2 connects capacitor C1, another termination of capacitor C1
Ground.
3. keeping the LCD liquid crystal display die set of display after a kind of power down according to claim 2, which is characterized in that described
Chip U1, chip U2 and chip U3 are phase inverter.
4. keeping the LCD liquid crystal display die set of display after a kind of power down according to claim 2, which is characterized in that described
Capacitor C1 is farad capacitor.
5. keeping the LCD liquid crystal display die set of display after a kind of power down according to claim 1 to 4, feature exists
In the LED backlight (2) is using the luminous SMT SMD lamp in two sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821887133.5U CN208954614U (en) | 2018-11-16 | 2018-11-16 | The LCD liquid crystal display die set of display is kept after a kind of power down |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821887133.5U CN208954614U (en) | 2018-11-16 | 2018-11-16 | The LCD liquid crystal display die set of display is kept after a kind of power down |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208954614U true CN208954614U (en) | 2019-06-07 |
Family
ID=66744858
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821887133.5U Expired - Fee Related CN208954614U (en) | 2018-11-16 | 2018-11-16 | The LCD liquid crystal display die set of display is kept after a kind of power down |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208954614U (en) |
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2018
- 2018-11-16 CN CN201821887133.5U patent/CN208954614U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190607 Termination date: 20211116 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |