CN208722549U - Backlight regulating device - Google Patents
Backlight regulating device Download PDFInfo
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- CN208722549U CN208722549U CN201821351760.7U CN201821351760U CN208722549U CN 208722549 U CN208722549 U CN 208722549U CN 201821351760 U CN201821351760 U CN 201821351760U CN 208722549 U CN208722549 U CN 208722549U
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- 230000001105 regulatory effect Effects 0.000 title claims abstract description 41
- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 25
- 230000015654 memory Effects 0.000 claims abstract description 17
- 238000004891 communication Methods 0.000 claims description 8
- 230000005611 electricity Effects 0.000 claims description 3
- 230000008859 change Effects 0.000 abstract description 9
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- 238000010586 diagram Methods 0.000 description 8
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- 238000000605 extraction Methods 0.000 description 3
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- 238000004088 simulation Methods 0.000 description 2
- 241001269238 Data Species 0.000 description 1
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- 238000004364 calculation method Methods 0.000 description 1
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- 230000001276 controlling effect Effects 0.000 description 1
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Abstract
The application discloses a kind of backlight regulating device, including configuration module, provides one group of input voltage value；Processor module is connect with the configuration module, receives the input voltage value of the configuration module, and is converted to current value output；Backlight drive module is connect with the processor module, including multichannel backlight driver, and the current value is input to the multichannel backlight driver；And memory, it is connect with the processor module, stores the current value, wherein, the configuration module includes analog input module and digital input module, so that there are many current values of mode for the backlight driver, and can change the input voltage value in real time.The backlight regulating device of the application can realize the adjusting of backlight illumination using different input modes, and can be adapted for the liquid crystal module for going out light using different backlight modes, versatile, improve work efficiency.
Description
Technical field
The utility model relates to field of display technology, and in particular, to a kind of backlight regulating device.
Background technique
Currently, needing to design to different panels to meet the needs of masses are to liquid crystal display display effect different aspect
The backlight lightening form different with collocation, if local backlight dims, direct-type backlight, side entrance back etc..In the production process,
It often needs to carry out backlight test and adjusting to the panel for selecting different backlight modes, obtains corresponding backlight test data, for
The panel of different backlight regulative modes is needed using different backlight regulating devices.
Fig. 1 shows the working principle diagram of the backlight illumination regulating device of the prior art, is set separately first by PS2 keyboard
The dutyfactor value of the PWM (Pulse Width Modulation, pulse width modulation) of the backlight driver in different channels, then
It is communicated, is enabled by arm processor and FPGA (Field-Programmable Gate Array, field programmable gate array)
FPGA generates required PWM waveform, and each pwm signal correspondence is input to corresponding backlight driver, is driven here with 9 LED
For, corresponding 9 PWM duty cycle values.Because pulse width modulated duty cycle is different, the LED light of each LED drive control is corresponding
Backlight area brightness it is also different, and then achieve the effect that each road backlight illumination size of regulation.It is surveyed using brightness measuring device for camera
Each regional luminance of liquid crystal display is measured, if this brightness does not reach the normal brightness of needs, is ceaselessly adjusted respectively by keyboard
The PWM of the road Zheng Mei backlight driver stores the corresponding PWM value of each luminance area at this time, by it until obtaining satisfied brightness
Storage.
Existing backlight regulating device is cumbersome when using, and heavy workload, testing efficiency is low, lacks convenience, and
The backlight illumination of the panel of different light extraction modes is debugged, different backlight regulating devices is used, lack versatility, increase into
This.
Utility model content
In view of this, the purpose of this utility model is to provide a kind of backlight regulating device, it can be to using different backlights
The liquid crystal module of light extraction mode carries out backlight adjusting, and can be adjusted by multiple input modes, versatility and convenience
It is relatively strong, adjustment cost is reduced, working efficiency is improved.
According to the utility model, a kind of backlight regulating device is provided, comprising: configuration module provides one group of input voltage value；
Processor module is connect with the configuration module, receives the input voltage value of the configuration module, and is converted to current value
Output；Backlight drive module is connect with the processor module, including multichannel backlight driver, and the current value is input to
The multichannel backlight driver；And memory, it is connect with the processor module, stores the current value, the configuration mould
Block includes analog input module and digital input module, so that there are many current values of mode for the backlight driver.
Preferably, the backlight drive module is corresponding has a M channel, and every channel includes N sub-channels, and described one group
Input voltage value includes M*N voltage data, wherein M and N is the positive integer greater than 1.
Preferably, the analog input module includes: selecting module, needs to access the input voltage value for selecting
The channel；And adjustment module, for adjusting the input voltage value.
Preferably, the selecting module, which selects and turns in M data channel, needs to access the input voltage value
Data channel；N number of input voltage value is inputted the corresponding N number of subchannel of the data channel by the adjustment module.
Preferably, the digital input module includes communication port (USB) and SD card.
Preferably, the backlight regulating device further include: liquid crystal display is connect with the processor module, and display is adjusted
Parameter is saved, the configuration module changes the brightness of the liquid crystal display by the processor module；And connector, it is described
Backlight drive module is connect by the connector with tested liquid crystal display die set, and to described in liquid crystal display die set output
Current value.
Preferably, the processor module includes: voltage acquisition module, is connect with the configuration module, to the input
Voltage value carries out voltage sample；Microprocessor is connect with the voltage acquisition module, is received the voltage value and is handled, and is turned
It is changed to current value；And register, it is located at the microprocessor internal, stores the current value.
Preferably, the allocation space of the register is M*N, respectively corresponds the M*N subchannels.
Preferably, the backlight regulating device further includes precision knob, with the processor module and the configuration module
Connection, controls the rate of change of backlight.
Preferably, the memory includes flash memories, and the adjustment module includes VR knob.
Backlight regulating device provided by the utility model realizes the debugging of backlight illumination using multiinput control mode, can
To use VR knob to adjust, or using SD card input, data input can also be carried out using USB interface access host computer, it is a variety of
Control mode is simultaneously deposited, and is increased the versatility and convenience of backlight illumination regulating device, is reduced testing cost.
Multiple channels are set, and are adjusted by selecting module selection and VR knob, liquid crystal display local back can be obtained
The test data of brightness simultaneously carries out brightness adjustment, and debugging is convenient, and test backlight is more convenient, time saving and energy saving.It can also be applicable in
In the liquid crystal display die set using different backlight light extraction modes, versatility is preferable.
The corresponding current value of display effect for reaching demand taste in adjustment process can also be saved by flash memories,
It improves work efficiency, experimental data can be obtained faster.
Detailed description of the invention
By referring to the drawings to the description of the utility model embodiment, above-mentioned and other mesh of the utility model
, feature and advantage will be apparent from.
Fig. 1 shows the working principle diagram of the backlight illumination regulating device of the prior art.
Fig. 2 shows the structural schematic diagrams according to the backlight regulating device of the utility model embodiment.
Fig. 3 shows the working principle diagram of the backlight regulating device according to the utility model embodiment.
Fig. 4 shows the work flow diagram of the backlight regulating device according to the utility model embodiment.
Specific embodiment
The utility model is described below based on embodiment, but the utility model is not restricted to these implementations
Example.It is detailed to describe some specific detail sections below in the datail description of the utility model.To those skilled in the art
The utility model can also be understood completely in the description of part without these details for member.In order to avoid obscuring the utility model
Essence, there is no narrations in detail for well known method, process, process, element and circuit.
It should be appreciated that " known ", " fixation ", " given " and " predetermined " is under normal conditions in the description of the present invention,
Refer to a value, quantity, parameter, constraint condition, condition, state, process, process, implementation or various combinations etc. are theoretically
It is variable, but if be set in advance, is to maintain in subsequent use constant.Term " first ", " second " etc. are only used
In description purpose, it is not understood to indicate or imply relative importance.In addition, in the description of the present invention, unless another
It is described, the meaning of " plurality " is two or more.Unless the context clearly requires otherwise, otherwise the whole instruction and right are wanted
The similar word such as "include", "comprise" in book is asked to should be construed as the meaning for including rather than exclusive or exhaustive meaning；?
That is the meaning for being " including but not limited to ".
Fig. 2 shows the structural schematic diagrams according to the backlight regulating device of the utility model embodiment.The utility model is implemented
The backlight regulating device 100 of example includes: configuration module 110, processor module 120, backlight drive module 130, memory 140,
Liquid crystal display 150 and connector 160.
Input terminal of the configuration module 110 as tune-up data provides one group of input voltage value, including analog input module
111 and digital input module 112, make current value of the backlight drive module 130 there are many mode, and input electricity can be changed in real time
The numerical value of pressure value.Wherein, digital input module 112 includes SD card 1121 and communication port 1122, and SD card 1121 is connected by card slot
It is connected on processor module 120, communication port 1122 is USB jack, can connect PC machine (host computer) etc., passes through serial communication
Module (USART) realizes the communication between processor module 120 and the end computer PC；It can store multi-group data in SD card 1121,
PC machine can be inputted by program changes input value.Analog input module 111 includes selecting module 1111 and adjustment module 1112,
Selecting module 1111 is used to select to need to access the backlight drive channel in the backlight drive module 130 of input voltage value, adjusts
Adjustment module 1112 can change the data of input voltage value, and adjustment module 1112 is for example including VR knob, by changing resistance
Value is to change voltage value.Configuration module 110 is used as data input pin, generally can be positioned at the side of backlight regulating device 100
Edge position.
Processor module 120 is connect with configuration module 110, generally can be with as the core element of backlight regulating device 100
It is arranged in middle position.Processor module 120 receives the input voltage value inputted by configuration module 110, and is converted to current value
It exports, in the present embodiment, processor module 120 includes microprocessor 121 and voltage acquisition module 122.Voltage acquisition module 122
It is connect with microprocessor 121, voltage sample is carried out to input voltage value, for example including analog-digital converter, by simulation input data
Be converted to data value；Microprocessor 121 receives the voltage value Jing Guo 122 sampling processing of voltage acquisition module, and is converted to correspondence
The current value that register 123 can store；Register 123 is located inside microprocessor 121, and storage is by microprocessor 121
The current value of reason and conversion.Microprocessor 121 for example can be arm processor.
Backlight drive module 130 is connect with processor module 120, including multichannel backlight driver 131, multichannel backlight drive
The multiple current values stored in 131 receiving register 123 of device drive corresponding LED light to shine, and liquid crystal display die set shows bright
Degree.Preferably, backlight drive module 130 can pass through I2C bus and processor module 120 carry out data communication.Preferably, it carries on the back
Optical drive module 130 is corresponding to have M channel, and every channel includes N sub-channels, shares M*N subchannel, corresponds to M*N
Backlight driver 131, the amount of storage space of register 123 also correspond to M*N, 110 received one groups of inputs of configuration module
Voltage value includes M*N voltage data, wherein M and N is the positive integer greater than 1.
Preferably, the selecting module 1111 of analog input module 111, can choose and to connect backlight drive module 130 right
The channel needed in the M channel answered, selected channel can receive the voltage value of input, and not selected channel can root
It is set as predetermined value, such as 0 according to processor module 120.Selecting module 111 for example can be the selection switch of push button, press
Represent gating, one channel of a switch control, it is preferable that can be set and be illustrated for 5 backlight channels.
Adjustment module 1112 inputs N number of input voltage value to the every channel chosen, i.e., by the corresponding input of N number of voltage value
Into the corresponding N number of subchannel in selected backlight channel, adjusting VR knob can change the data of input voltage value to change liquid
The brightness of brilliant display module, i.e. configuration module 110 change the brightness of liquid crystal display 150 by processor module 130.It is preferred that
Ground, the corresponding subchannel of each VR knob control a voltage value, in the present embodiment, can select 10 in a channel
A subchannel, i.e., with 5 backlight channels, every backlight channel includes the adjusting for illustrating backlight regulating device for 10 subchannels
Process.
Due to the characteristic of VR knob itself, the numerical value of input voltage can be changed in real time by rotating VR knob, and for number
The SD card 1121 and host computer of input module 112 are then to change input data in real time by other mode, for example, in SD card
Multiple groups voltage value can be stored in advance, when brightness is improper, processor module 20 controls it and selects next group of voltage data；PC
The host computer at end then can adjust input voltage value by changing programming data in real time, so three kinds of configuration module 110 are defeated
Enter mode can repeatedly input M*N different voltage datas to processor module 120.
Memory 140 is connect with processor module 120, when the brightness effects that liquid crystal display die set is shown reach requirement,
The current value of the storage of memory 140 at that time, memory 140 is for example including flash memories, it is preferable that memory 140 can lead to
It crosses spi bus and processor module 120 carries out data communication.
Liquid crystal display 150 is connect with processor module 120, vision-control parameter, and one group of adjustment parameter such as input
Voltage value, what is currently carried out is which time adjusting etc.；Connector 160 is connect with backlight drive module 130, backlight drive module
130 multiple backlight channels 131 can be connected in liquid crystal display die set to be debugged by connector 160, can be to tested
Liquid crystal display die set exports one group of current value, is debugged.
The backlight regulating device 100 of the present embodiment can also include precision knob 170, with processor module 120 and simulation
Input module 111 connects, for controlling the regulations speed of backlight.
Fig. 3 shows the working principle diagram of the backlight regulating device according to the utility model embodiment.
In conjunction with Fig. 2, backlight drive module 130 is corresponding to have M channel, and every channel includes N sub-channels, corresponding,
One group of input voltage value is M*N altogether, and the allocation space of register 123 is at least M*N, respectively corresponds M*N subchannel,
In, M and N are the positive integer greater than 1.Here with M=5, the working principle of backlight regulating device 100 is illustrated for N=10.
One group of voltage value is input to processor module 120 using configuration module 110 first, here with analog input module
Illustrate for 111, then selects switch selection KEY1-KEY5, the channel of input voltage, VR knob are needed in 5 backlight channels
VR1-VR10 inputs 10 voltage values to selected backlight channel respectively；Voltage acquisition module 122 receives voltage value, arranges
The voltage value of acquisition is converted to corresponding current value by input microprocessor 121 afterwards, microprocessor 121, distributes to register 123
Storage, such as Fig. 3, register 123 distribute 50 data field DATE1-DATE50 and store data；Data in register 123 are first
Via multiple groups I2Every transmitter (I all the way in C transmitter 1802C1-I2C50) output is to corresponding in backlight drive module 130
Multichannel backlight driver 131 (LED_Driver1-LED_Driver n)；Then the backlight driver 131 on each road receives electric current
Value, bright by corresponding LED light in the driving liquid crystal display die set of connector 160, each region of liquid crystal display panel is shown not
Same brightness；Liquid crystal display 150 can be with real-time display adjustment parameter.Whether the brightness display effect of judgement at this time is demand
Effect can change input voltage value by adjusting VR knob, to repeatedly be adjusted if not up to demanding criteria.
So circulation samples corresponding display effect until reaching demand, uses the current value of the storage of memory 140 at that time.
When distributing register, the numerical value of each data space storage has corresponding calculation formula, such as:
Wherein, collection voltages value is the voltage value of VR knob input, and collection voltages value/unitary current value is (for example, every mA is electric
Stream) corresponding voltage value obtains corresponding brightness percentage, the register in corresponding backlight drive channel is converted according to brightness percentage
Value, and multiplying power then determines the speed of adjustment brightness.Wherein, the size of multiplying power determines that multiplying power is big by precision knob 170, can be fast
Speed changes brightness, realizes and quickly adjusts.
Fig. 4 shows the work flow diagram of the backlight regulating device according to the utility model embodiment.The process includes step altogether
Rapid S01- step S09.
In step S01, booting.Booting powers on, and backlight regulating device 100 enters the preparation stage.
In step S02, electric current setting.The corresponding current value of screen demand brightness and current value electricity has been set in advance
Corresponding register value of flow valuve etc..
In step S03, configuration current-mode selection.Required voltage input mode, selection are selected according to actual needs
It is operated using host computer, then enters step S04；Selection adjusts brightness using VR knob, then enters step S05；Select SD card tune
Brightness is saved, then enters step S06.
In step S04, PC host computer is used.Using host computer, manually or automatically input voltage value.
In step S05, AD acquisition control is used.Selector channel, VR knob input data are switched using selection.
In step S06, configured using SD card.According to the content that SD card stores, one group of input voltage value is selected.
In step S07, judge whether brightness effects reach demand.If brightness reaches display demand, enter step S08,
Otherwise S02 is entered step.
In step S08, flash memories store suitable current value.For reaching the current value of demand display brightness,
It is stored, is stored into flash memories.
In step S09, terminate.Brightness debugging process terminates.
The backlight regulating device of the utility model realizes the debugging of backlight illumination using multiinput control mode, can make
It is adjusted with VR knob, or is inputted using SD card, data input, various control can also be carried out using USB interface access host computer
Mode is simultaneously deposited, and is increased the versatility and convenience of backlight illumination regulating device, is reduced testing cost.Wherein, it is revolved using VR
When button adjusting section, multiple channels are set, and are adjusted by selecting module selection and VR knob, liquid crystal display local back can be obtained
The test data of brightness simultaneously carries out brightness adjustment, and debugging is convenient, and test backlight is more convenient, time saving and energy saving.
In the utility model, the most preferred embodiment of above-described embodiment only realization the utility model, but the utility model
Embodiment is without being limited thereto.
Finally, it should be noted that as described above according to the embodiments of the present invention, there is no detailed for these embodiments
All details are described, also not limiting the utility model is only the specific embodiment.Obviously, as described above, can make
Many modifications and variations.All any modification, equivalent replacement, improvement within the spirit and principle of the utility model
Deng should be included within the scope of protection of this utility model.The present embodiment is chosen and specifically described to this specification, is in order to more
The principles of the present invention and practical application are explained well, so that skilled artisan be enable to utilize this reality well
It is used with novel and on the basis of the utility model modification.
Claims (10)
1. a kind of backlight regulating device characterized by comprising
Configuration module provides one group of input voltage value；
Processor module is connect with the configuration module, receives the input voltage value of the configuration module, and is converted to electricity
Flow valuve output；
Backlight drive module is connect with the processor module, including multichannel backlight driver, and the current value is input to institute
State multichannel backlight driver；And
Memory is connect with the processor module, stores the current value,
Wherein, the configuration module includes analog input module and digital input module, so that there are many backlight drivers
The current value of mode.
2. backlight regulating device according to claim 1, which is characterized in that the backlight drive module is corresponding to have M item
Channel, every channel includes N sub-channels, and one group of input voltage value includes M*N voltage data, wherein M and N are
Positive integer greater than 1.
3. backlight regulating device according to claim 2, which is characterized in that the analog input module includes:
Selecting module, for selecting to need to access the channel of the input voltage value；And
Adjustment module, for adjusting the input voltage value.
4. backlight regulating device according to claim 3, which is characterized in that the selecting module selects and turns on the M
Need to access the data channel of the input voltage value in channel；The adjustment module inputs N number of input voltage value
The corresponding N number of subchannel of the data channel.
5. backlight regulating device according to claim 1, which is characterized in that the digital input module includes communication port
(USB) and SD card.
6. backlight regulating device according to claim 1, which is characterized in that further include:
Liquid crystal display is connect with the processor module, vision-control parameter, and the configuration module passes through the processor die
Block changes the brightness of the liquid crystal display；And
Connector, the backlight drive module are connect by the connector with tested liquid crystal display die set, and to the liquid crystal
Display module exports the current value.
7. backlight regulating device according to claim 2, which is characterized in that the processor module includes:
Voltage acquisition module is connect with the configuration module, carries out voltage sample to the input voltage value；
Microprocessor is connect with the voltage acquisition module, is received the voltage value and is handled, is converted to current value；And
Register is located at the microprocessor internal, stores the current value.
8. backlight regulating device according to claim 7, which is characterized in that the allocation space of the register is M*N,
Respectively correspond the M*N subchannels.
9. backlight regulating device according to claim 1, which is characterized in that further include:
Precision knob is connect with the processor module and the configuration module, controls the regulations speed of backlight.
10. backlight regulating device according to claim 3, which is characterized in that the memory includes flash memories, institute
Stating adjustment module includes VR knob.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821351760.7U CN208722549U (en) | 2018-08-21 | 2018-08-21 | Backlight regulating device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821351760.7U CN208722549U (en) | 2018-08-21 | 2018-08-21 | Backlight regulating device |
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| CN208722549U true CN208722549U (en) | 2019-04-09 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112015318A (en) * | 2020-08-25 | 2020-12-01 | 京东方科技集团股份有限公司 | Display module debugging device, system and method |
| CN115249448A (en) * | 2021-04-27 | 2022-10-28 | 苏州佳世达电通有限公司 | Testing method of display module |
| CN118016013A (en) * | 2024-04-08 | 2024-05-10 | 芯北电子科技(南京)有限公司 | Display driving chip for liquid crystal display and driving method thereof |
-
2018
- 2018-08-21 CN CN201821351760.7U patent/CN208722549U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112015318A (en) * | 2020-08-25 | 2020-12-01 | 京东方科技集团股份有限公司 | Display module debugging device, system and method |
| CN112015318B (en) * | 2020-08-25 | 2022-05-31 | 京东方科技集团股份有限公司 | Display module debugging device, system and method |
| CN115249448A (en) * | 2021-04-27 | 2022-10-28 | 苏州佳世达电通有限公司 | Testing method of display module |
| CN118016013A (en) * | 2024-04-08 | 2024-05-10 | 芯北电子科技(南京)有限公司 | Display driving chip for liquid crystal display and driving method thereof |
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Address after: 215301, 1, Longteng Road, Kunshan, Jiangsu, Suzhou Patentee after: InfoVision Optoelectronics(Kunshan)Co.,Ltd. Address before: 215301, 1, Longteng Road, Kunshan, Jiangsu, Suzhou Patentee before: INFOVISION OPTOELECTRONICS (KUNSHAN) Co.,Ltd. |
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