CN203191663U - Liquid crystal module and drive signal filtering device thereof - Google Patents
Liquid crystal module and drive signal filtering device thereof Download PDFInfo
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- CN203191663U CN203191663U CN 201320087654 CN201320087654U CN203191663U CN 203191663 U CN203191663 U CN 203191663U CN 201320087654 CN201320087654 CN 201320087654 CN 201320087654 U CN201320087654 U CN 201320087654U CN 203191663 U CN203191663 U CN 203191663U
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Abstract
The utility model discloses a liquid crystal module and a drive signal filtering device thereof. The drive signal filtering device of the liquid crystal module comprises a filtering module which filters a first drive signal output through the liquid crystal module. The input end of the filtering module is connected with the first signal output end driven by the liquid crystal module, and the output end of the filtering module is connected with the first signal input end of the liquid crystal module. By means of the drive signal filtering device, the antistatic capacity of the liquid crystal module is improved, the influence of external disturbance on the liquid crystal module is decreased, and the display effect is improved. Further, the liquid crystal module and the drive signal filtering device thereof have the advantages of being simple in circuit structure and easy to implement.
Description
Technical field
The utility model relates to the electronic circuit technology field, relates in particular to a kind of liquid crystal module and drives the signal filtering device.
Background technology
Existing liquid crystal module drives without any filtering, and antistatic effect is poor, is subject to extraneous static and disturbs in daily use, causes display effect to be paid no attention to and thinks of demonstration mess code etc.
It is direct-connected that similar liquid crystal module drives signal, mess code also often occurs showing in experiments such as test static, burst of pulses, and damage element easily.
The utility model content
Fundamental purpose of the present utility model provides a kind of driving signal filtering device of liquid crystal module, is intended to reduce extraneous clutter to the interference of back-end circuit, intensifier circuit antistatic effect and raising display effect.
In order to achieve the above object, the utility model proposes a kind of driving signal filtering device of liquid crystal module, this device comprises: liquid crystal module is driven first of output drive the filtration module that signal carries out filtering; Wherein:
The input end of described filtration module is connected with first signal output part that liquid crystal module drives, and output terminal is connected with first signal input part of liquid crystal module.
Preferably, described filtration module comprises: first resistance and first electric capacity; One end of described first resistance is connected with first signal output part that liquid crystal module drives, and the other end is connected with first signal input part of liquid crystal module; One end of described first electric capacity is connected other end ground connection with the common port of first signal input part of first resistance and liquid crystal module.
Preferably, comprise that also liquid crystal module is driven first of output drives the Voltage stabilizing module that signal carries out voltage stabilizing; Described Voltage stabilizing module comprises: first stabilivolt; The negative electrode of described first stabilivolt is connected plus earth with the connected node of first resistance with first electric capacity.
The utility model also proposes a kind of liquid crystal module, and this liquid crystal module comprises the driving signal filtering device of liquid crystal module, and this device comprises: liquid crystal module is driven first of output drive the filtration module that signal carries out filtering; Wherein: the input end of described filtration module is connected with first signal output part that liquid crystal module drives, and output terminal is connected with first signal input part of liquid crystal module.
The driving signal filtering device of the liquid crystal module that the utility model proposes, increase by a filtration module by first signal output part that drives in liquid crystal module the signal of exporting is carried out filtering, can reduce extraneous clutter to the interference of back-end circuit, be conducive to the intensifier circuit antistatic effect and improve display effect.
Description of drawings
Fig. 1 is the circuit block diagram of driving signal filtering device first embodiment of the utility model liquid crystal module;
Fig. 2 is the electrical block diagram of driving signal filtering device first embodiment of the utility model liquid crystal module;
Fig. 3 is the circuit block diagram of driving signal filtering device second embodiment of the utility model liquid crystal module;
Fig. 4 is the electrical block diagram of driving signal filtering device second embodiment of the utility model liquid crystal module.
The realization of the utility model purpose, functional characteristics and advantage will be in conjunction with the embodiments, are described further with reference to accompanying drawing.
Embodiment
Further specify the technical solution of the utility model below in conjunction with Figure of description and specific embodiment.Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.
With reference to Fig. 1, Fig. 2, Fig. 3 and Fig. 4; Fig. 1 is the circuit block diagram of driving signal filtering device first embodiment of the utility model liquid crystal module; Fig. 2 is the electrical block diagram of driving signal filtering device first embodiment of the utility model liquid crystal module; Fig. 3 is the circuit block diagram of driving signal filtering device second embodiment of the utility model liquid crystal module; Fig. 4 is the electrical block diagram of driving signal filtering device second embodiment of the utility model liquid crystal module.As Fig. 1, Fig. 2, Fig. 3 and shown in Figure 4, the utility model proposes a kind of driving signal filtering device of liquid crystal module, this device comprises: liquid crystal module is driven first of 10 outputs drive the filtration module 20 that signal carries out filtering; Wherein, the input end of described filtration module 20 is connected with first signal output part 101 of liquid crystal module driving 10, and output terminal is connected with first signal input part 301 of liquid crystal module 30.Existing liquid crystal module 30 all is that liquid crystal module drives 10 circuit and directly is connected with liquid crystal module 30, when being subjected to extraneous static or other and disturbing, will produce clutter in the circuit, makes to drive jitter and damage the circuit posterior member easily.Driving signal output part in liquid crystal module driving 10 in this programme connects a filtration module 20, and the clutter in the circuit is filtered out, and has played the effect of stabilized driving signal, has strengthened the antijamming capability of circuit.
Above-mentioned filtration module 20 comprises: first resistance R 1 and first capacitor C 1; One end of described first resistance R 1 is connected with first signal output part 101 of liquid crystal module driving 10, and the other end is connected with first signal input part 301 of liquid crystal module 30; One end of described first capacitor C 1 is connected other end ground connection with the common port of first signal input part 301 of first resistance R 1 and liquid crystal module 30.In this programme, it is low to utilize electric capacity to have a logical high resistant, the logical friendship every the straight filtering high frequency clutter that is used for, herein, when containing the high frequency clutter in the driving signals of described liquid crystal module driving 10 outputs, can arrive ground through first capacitor C 1, thereby play the effect of filtering high frequency clutter.
Further, comprise that also liquid crystal module is driven first of 10 outputs drives the Voltage stabilizing module 40 that signal 101 carries out voltage stabilizing; Described Voltage stabilizing module 40 comprises: the first stabilivolt DZ1; The negative electrode of the described first stabilivolt DZ1 is connected plus earth with the connected node of first resistance R 1 and first capacitor C 2.The first stabilivolt DZ1 is a kind of high-effect protection device of diode form in this programme.When the two poles of the earth of the first stabilivolt DZ1 are subjected to reverse transient state high energy impact events; it can be with the speed of 10-12n second-time; the high impedance of its two interpolar is become Low ESR; the surge power of absorption up to thousands of watts; make the voltage clamp of two interpolars in a predetermined value, protect precision components in the electronic circuit to avoid the damage of various electrical fast transient (eft)s effectively.
The driving signal filtering device of the liquid crystal module that the utility model proposes, the signal that increases by 20 pairs of outputs of filtration modules by first signal output part 101 in liquid crystal module driving 10 carries out filtering, can reduce extraneous clutter to the interference of back-end circuit, be conducive to the intensifier circuit antistatic effect and improve display effect.
The principle of the driving signal filtering device of the utility model liquid crystal module is achieved as follows:
Contact discharge 7.3KV is arranged in circuit, when the high-frequency interferencing signal source of atmospherical discharges 14.5KV enters the first driving signal control line of liquid crystal module 30, the RC circuit of forming through first resistance R 1 and first capacitor C 1 falls the low frequency signal of remnants on the front end signal control line of first resistance R 1, and high frequency ripple voltage bypasses via first capacitor C 1, be to be understood that electric capacity has the low effect of logical high resistant, and first capacitor C, 1 ground connection herein, high frequency is equivalent to short circuit.At input signal one regularly, the value of first resistance R 1 and first capacitor C 1 is more big, and then ripple factor is littler, and is anti-interference more good; And in voltage when input of fast transient pulse, arranged simultaneously, and making the first stabilivolt reverse breakdown, the fast transient pulse flows into ground wire, plays the effect of transient protection posterior member.
The utility model also proposes a kind of liquid crystal module, and this liquid crystal module comprises the driving signal filtering device of liquid crystal module, and this device comprises: liquid crystal module is driven first of 10 outputs drive the filtration module 20 that signal 101 carries out filtering; Wherein: the input end of described filtration module 20 is connected with first signal output part 101 of liquid crystal module driving 10, and output terminal is connected with first signal input part 301 of liquid crystal module 30.
Particularly, liquid crystal module drives in 10 and has a plurality of driving signal output parts; Each of described liquid crystal module driving 10 drives signal output part and is equipped with filtration module 20 and Voltage stabilizing module 40.No matter which driving signal of liquid crystal module driving 10 is exported when being subjected to external interference generation clutter, the clutter of generation all can filter out through the driving signal filtering device of described liquid crystal module, plays the stable effect of holding circuit like this.
The liquid crystal module that the utility model proposes, is conducive to strengthen antistatic effect and improves display effect so can reduce extraneous clutter to the interference of liquid crystal module because used the driving signal filtering device of described liquid crystal module.
The above only is preferred embodiment of the present utility model; be not so limit claim of the present utility model; every equivalent structure or equivalent flow process conversion that utilizes the utility model instructions and accompanying drawing content to do; or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present utility model.
Claims (4)
1. the driving signal filtering device of a liquid crystal module is characterized in that, comprising: liquid crystal module is driven first of output drive the filtration module that signal carries out filtering; Wherein:
The input end of described filtration module is connected with first signal output part that liquid crystal module drives, and output terminal is connected with first signal input part of liquid crystal module.
2. the driving signal filtering device of liquid crystal module according to claim 1 is characterized in that described filtration module comprises: first resistance and first electric capacity; One end of described first resistance is connected with first signal output part that liquid crystal module drives, and the other end is connected with first signal input part of liquid crystal module; One end of described first electric capacity is connected other end ground connection with the common port of first signal input part of first resistance and liquid crystal module.
3. the driving signal filtering device of liquid crystal module according to claim 2 is characterized in that, comprises that also liquid crystal module is driven first of output drives the Voltage stabilizing module that signal carries out voltage stabilizing; Described Voltage stabilizing module comprises: first stabilivolt; The negative electrode of described first stabilivolt is connected plus earth with the connected node of first resistance with first electric capacity.
4. a liquid crystal module is characterized in that, comprises the driving signal filtering device of each described liquid crystal module of claim 1-3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320087654 CN203191663U (en) | 2013-02-26 | 2013-02-26 | Liquid crystal module and drive signal filtering device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320087654 CN203191663U (en) | 2013-02-26 | 2013-02-26 | Liquid crystal module and drive signal filtering device thereof |
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| Publication Number | Publication Date |
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| CN203191663U true CN203191663U (en) | 2013-09-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201320087654 Expired - Fee Related CN203191663U (en) | 2013-02-26 | 2013-02-26 | Liquid crystal module and drive signal filtering device thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105763029A (en) * | 2016-04-07 | 2016-07-13 | 无锡矽瑞微电子股份有限公司 | Overload over current protection anti-interference driving circuit |
| CN109285510A (en) * | 2018-09-11 | 2019-01-29 | 重庆惠科金渝光电科技有限公司 | A kind of display, display device and ground resistance adjusting method |
| CN111413818A (en) * | 2020-03-31 | 2020-07-14 | 精电(河源)显示技术有限公司 | Liquid crystal display module capable of resisting electrical interference |
| CN112037723A (en) * | 2020-08-14 | 2020-12-04 | 深圳市晶联讯电子有限公司 | Anti-interference display module based on CMOS device |
-
2013
- 2013-02-26 CN CN 201320087654 patent/CN203191663U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105763029A (en) * | 2016-04-07 | 2016-07-13 | 无锡矽瑞微电子股份有限公司 | Overload over current protection anti-interference driving circuit |
| CN109285510A (en) * | 2018-09-11 | 2019-01-29 | 重庆惠科金渝光电科技有限公司 | A kind of display, display device and ground resistance adjusting method |
| CN109285510B (en) * | 2018-09-11 | 2021-04-02 | 重庆惠科金渝光电科技有限公司 | Display, display device and grounding resistance adjusting method |
| CN111413818A (en) * | 2020-03-31 | 2020-07-14 | 精电(河源)显示技术有限公司 | Liquid crystal display module capable of resisting electrical interference |
| CN111413818B (en) * | 2020-03-31 | 2021-02-02 | 精电(河源)显示技术有限公司 | Liquid crystal display module capable of resisting electrical interference |
| CN112037723A (en) * | 2020-08-14 | 2020-12-04 | 深圳市晶联讯电子有限公司 | Anti-interference display module based on CMOS device |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130911 Termination date: 20160226 |