CN204613805U - A kind of liquid crystal module DC power output voltage autocompensation installation - Google Patents
A kind of liquid crystal module DC power output voltage autocompensation installation Download PDFInfo
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- CN204613805U CN204613805U CN201520344592.9U CN201520344592U CN204613805U CN 204613805 U CN204613805 U CN 204613805U CN 201520344592 U CN201520344592 U CN 201520344592U CN 204613805 U CN204613805 U CN 204613805U
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Abstract
The utility model relates to a kind of liquid crystal module DC power output voltage autocompensation installation, the power configuration signal output part of its liquid crystal module direct supply configuration module connects the signal input part of liquid crystal module direct-current power output module, the voltage signal sampling end of voltage sample module connects the voltage signal sampling end of liquid crystal module direct-current power output module, the signal output part of voltage sample module connects the voltage sampling signal input end of single-chip microcomputer, the signal output part of standard voltage value setting module connects the standard voltage signal input end of single-chip microcomputer, the Voltage Feedback calibrating signal output terminal of single-chip microcomputer connects the Voltage Feedback calibrating signal input end of liquid crystal module direct supply configuration module.When the utility model is by making liquid crystal module to carry out some screen test, real-Time Compensation can be carried out to liquid crystal module power supply, ensureing that liquid crystal module power supply under any circumstance all remains on setting value.
Description
Technical field
The utility model relates to liquid crystal module power technique fields, is specifically related to a kind of liquid crystal module DC power output voltage autocompensation installation.
Background technology
LCM (Liquid Crystal Display Module, liquid crystal module) or OLED (Organic Light-Emitting Diode, Organic Light Emitting Diode module) when to carry out some screen test in testing apparatus, because the color of every width picture, brightness are had any different, when carrying out picture switching and load change, system power supply VDD, backlight electric power VBL, digital IC power vd DIO can occur changing according to the difference of different picture color and brightness.And some liquid crystal module is responsive to the voltage compare of various power supply, if need power supply size to have deviation with actual module, can cause dodging the phenomenons such as screen, water ripples, picture be different, misleading can be caused to the staff produced on line, the quality of liquid crystal module cannot be differentiated very accurately, affect liquid crystal module detection efficiency.
Utility model content
The purpose of this utility model is to provide a kind of liquid crystal module DC power output voltage autocompensation installation, this device can when liquid crystal module to carry out some screen test, real-Time Compensation is carried out to the power supply of liquid crystal module, ensures that power supply under any circumstance all remains on setting value.
For solving the problems of the technologies described above, a kind of liquid crystal module DC power output voltage autocompensation installation disclosed in the utility model, it comprises liquid crystal module direct supply configuration module, liquid crystal module direct-current power output module, voltage sample module, standard voltage value setting module and single-chip microcomputer, wherein, the power configuration signal output part of described liquid crystal module direct supply configuration module connects the signal input part of liquid crystal module direct-current power output module, the voltage signal sampling end of voltage sample module connects the voltage signal sampling end of liquid crystal module direct-current power output module, the signal output part of voltage sample module connects the voltage sampling signal input end of single-chip microcomputer, the signal output part of standard voltage value setting module connects the standard voltage signal input end of single-chip microcomputer, the Voltage Feedback calibrating signal output terminal of described single-chip microcomputer connects the Voltage Feedback calibrating signal input end of liquid crystal module direct supply configuration module.
The utility model is by arranging above-mentioned liquid crystal module direct supply configuration module, liquid crystal module direct-current power output module, voltage sample module, standard voltage value setting module and single-chip microcomputer, when making liquid crystal module to carry out some screen test, real-Time Compensation can be carried out to liquid crystal module power supply, ensure that liquid crystal module power supply under any circumstance all remains on setting value, avoid the liquid crystal module caused due to mains fluctuations and dodge the phenomenons such as screen, water ripples, picture be different.Utilize the utility model can get rid of the inaccurate problem of liquid crystal module testing result caused because supply voltage is unstable when liquid crystal module detects, improve liquid crystal module detection efficiency.
Accompanying drawing explanation
Fig. 1 is structured flowchart of the present utility model;
Wherein, 1-liquid crystal module direct supply configuration module, 2-liquid crystal module direct-current power output module, 3-voltage sample module, 4-standard voltage value setting module, 5-single-chip microcomputer, 6-digital to analog converter.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail:
Liquid crystal module DC power output voltage autocompensation installation of the present utility model, it is characterized in that: it comprises liquid crystal module direct supply configuration module 1, liquid crystal module direct-current power output module 2, voltage sample module 3, standard voltage value setting module 4 and single-chip microcomputer 5, wherein, the power configuration signal output part of described liquid crystal module direct supply configuration module 1 connects the signal input part of liquid crystal module direct-current power output module 2, the voltage signal sampling end of voltage sample module 3 connects the voltage signal sampling end of liquid crystal module direct-current power output module 2, the signal output part of voltage sample module 3 connects the voltage sampling signal input end of single-chip microcomputer 5, the signal output part of standard voltage value setting module 4 connects the standard voltage signal input end of single-chip microcomputer 5, the Voltage Feedback calibrating signal output terminal of described single-chip microcomputer 5 connects the Voltage Feedback calibrating signal input end of liquid crystal module direct supply configuration module 1.Single-chip microcomputer 5 controls the preservation of each supply voltage setting value, the preservation of voltage sample module 3 Real-time Collection supply voltage value, and setting value and collection value is compared in real time, and the most backward liquid crystal module direct supply configuration module 1 carries Voltage Feedback calibrating signal.
In technique scheme, voltage sample module 3 is instrumentation amplifier.
In technique scheme, the voltage signal sampling end of described liquid crystal module direct-current power output module 2 and voltage sample module 3 comprises liquid crystal module system power supply signal sampling end, liquid crystal module group backlight power signal sampling end, liquid crystal module digital integrated circuit power signal sampling end;
The liquid crystal module system power supply signal sampling end of described voltage sample module 3 connects the liquid crystal module system power supply signal VDD sampling end of liquid crystal module direct-current power output module 2, the liquid crystal module group backlight power supply signal VBL sampling end of voltage sample module 3 connects the liquid crystal module group backlight power signal sampling end of liquid crystal module direct-current power output module 2, and the liquid crystal module digital integrated circuit power supply signal VDDIO sampling end of voltage sample module 3 connects the liquid crystal module digital integrated circuit power signal sampling end of liquid crystal module direct-current power output module 2.
In technique scheme, described liquid crystal module direct supply configuration module 1 is liquid crystal module DC/DC (DC-DC power supply) direct supply configuration module.The DC/DC power supply chip of liquid crystal module DC/DC direct supply configuration module, main be used as multiple power supply generation module and produce and can different types of liquid crystal module power supply of independent regulation export, DC/DC conversion is the size former direct current being controlled the effective voltage exported by its PWM of adjustment (dutycycle);
In technique scheme, it also comprises digital to analog converter 6, and the Voltage Feedback calibrating signal output terminal of described single-chip microcomputer 5 connects the Voltage Feedback calibrating signal input end of liquid crystal module DC/DC direct supply configuration module by digital to analog converter 6.
The course of work of the present utility model is: liquid crystal module direct supply configuration module 1 controls liquid crystal module direct-current power output module 2 to liquid crystal module out-put supply signal, voltage sample module 3 is at real-time voltage signal (the liquid crystal module system power supply signal of the employing port processing of liquid crystal module direct-current power output module 2, liquid crystal module group backlight power supply signal, liquid crystal module digital integrated circuit power supply signal), and be transferred to single-chip microcomputer 5, liquid crystal module voltage (the liquid crystal module system power supply signal that standard voltage value setting module 4 will be preset, liquid crystal module group backlight power supply signal, liquid crystal module digital integrated circuit power supply signal) standard value is transferred to single-chip microcomputer 5, setting value and collection value compare by single-chip microcomputer 5 in real time, the most backward liquid crystal module direct supply configuration module 1 carries Voltage Feedback calibrating signal, liquid crystal module direct supply configuration module 1 controls the magnitude of voltage of liquid crystal module direct-current power output module 2 outputting standard.
The content that this instructions is not described in detail belongs to the known prior art of professional and technical personnel in the field.
Claims (4)
1. a liquid crystal module DC power output voltage autocompensation installation, it is characterized in that: it comprises liquid crystal module direct supply configuration module (1), liquid crystal module direct-current power output module (2), voltage sample module (3), standard voltage value setting module (4) and single-chip microcomputer (5), wherein, the power configuration signal output part of described liquid crystal module direct supply configuration module (1) connects the signal input part of liquid crystal module direct-current power output module (2), the voltage signal sampling end of voltage sample module (3) connects the voltage signal sampling end of liquid crystal module direct-current power output module (2), the signal output part of voltage sample module (3) connects the voltage sampling signal input end of single-chip microcomputer (5), the signal output part of standard voltage value setting module (4) connects the standard voltage signal input end of single-chip microcomputer (5), the Voltage Feedback calibrating signal output terminal of described single-chip microcomputer (5) connects the Voltage Feedback calibrating signal input end of liquid crystal module direct supply configuration module (1).
2. liquid crystal module DC power output voltage autocompensation installation according to claim 1, is characterized in that: the voltage signal sampling end of described liquid crystal module direct-current power output module (2) and voltage sample module (3) comprises liquid crystal module system power supply signal sampling end, liquid crystal module group backlight power signal sampling end, liquid crystal module digital integrated circuit power signal sampling end;
The liquid crystal module system power supply signal sampling end of described voltage sample module (3) connects the liquid crystal module system power supply signal sampling end of liquid crystal module direct-current power output module (2), the liquid crystal module group backlight power signal sampling end of voltage sample module (3) connects the liquid crystal module group backlight power signal sampling end of liquid crystal module direct-current power output module (2), the liquid crystal module digital integrated circuit power signal sampling end of voltage sample module (3) connects the liquid crystal module digital integrated circuit power signal sampling end of liquid crystal module direct-current power output module (2).
3. liquid crystal module DC power output voltage autocompensation installation according to claim 1, is characterized in that: described liquid crystal module direct supply configuration module (1) is liquid crystal module DC/DC direct supply configuration module.
4. liquid crystal module DC power output voltage autocompensation installation according to claim 3, it is characterized in that: it also comprises digital to analog converter (6), the Voltage Feedback calibrating signal output terminal of described single-chip microcomputer (5) connects the Voltage Feedback calibrating signal input end of liquid crystal module DC/DC direct supply configuration module by digital to analog converter (6).
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109147667A (en) * | 2018-09-21 | 2019-01-04 | 京东方科技集团股份有限公司 | Voltage compensating device and method, array substrate, display device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109147667A (en) * | 2018-09-21 | 2019-01-04 | 京东方科技集团股份有限公司 | Voltage compensating device and method, array substrate, display device |
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Address after: 430070 Hongshan building center 4, Nanhu Avenue, Hongshan District, Wuhan, Hubei, 4 Patentee after: Wuhan fine test electronics group Limited by Share Ltd Address before: 430070 Hongshan building center 4, Nanhu Avenue, Hongshan District, Wuhan, Hubei, 4 Patentee before: Wuhan Jingce Electronic Technology Co., Ltd. |