CN209215783U - A kind of liquid crystal module response time detection device - Google Patents
A kind of liquid crystal module response time detection device Download PDFInfo
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- CN209215783U CN209215783U CN201822123574.4U CN201822123574U CN209215783U CN 209215783 U CN209215783 U CN 209215783U CN 201822123574 U CN201822123574 U CN 201822123574U CN 209215783 U CN209215783 U CN 209215783U
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Abstract
The utility model discloses a kind of liquid crystal module response time detection devices, for detecting the response time of liquid crystal module comprising box body, liquid crystal display and driving plate.Partition is provided in the middle part of the box body, optic probe is additionally provided on the partition, in box body for the liquid crystal module setting and the optic probe is located at right above the liquid crystal module；The driving plate is arranged in the bottom plate of the box body, and liquid crystal display is arranged on box body lateral wall, and the driving plate includes fpga chip, liquid crystal drive interface, probe driving interface and display driving interface.Liquid crystal module response time detection device volume described in the utility model is small, is convenient for carrying and operates, measurement result is more acurrate and low cost.
Description
Technical field
The utility model relates to liquid crystal module detection technique field more particularly to a kind of detection of liquid crystal module response time dresses
It sets.
Background technique
With the high speed development of various digital products, digital product is widely used in people's lives and work, institute
The items quality requirements such as liquid crystal module are also increasingly harsh, and the performance of liquid crystal module all improves in effort in major panel manufacturer,
Such as enhance color displays, increases visual angle, reduces the response time.Wherein, reduce the response time for improving liquid crystal module
Performance is very crucial, can directly affect picture display quality.
Response time is the speed that each pixel of liquid crystal module reacts input signal, i.e., pixel is bright or by bright turn by blackout
Time required for dark (its principle is to apply voltage in liquid crystal molecule, makes liquid crystal molecule torsion and restores), so generally will
Response time is divided into two parts: rise time (Risetime) and fall time (Falltime), when the expression of response time
It is subject to sum of the two.Reaction time is shorter, and user does not have the feeling of tail shadow towing more when seeing dynamic menu.
In the research for reducing the response time, the key component in technological development is become to the detection of response time.It passes
The detection to the response time of system, it is general to connect oscillograph using optical devices such as similar CA310 or BM-7, it is examined by oscillograph
The waveform measured calculates the response time again.Test has the disadvantage that in this way: (1) equipment volume is big, takes up a large area,
And it is inconvenient mobile；(2) complicated for operation, time of measuring is long, needs the personnel of profession that could operate；(3) environmental change is easy to cause
Measurement result inaccuracy；(4) it involves great expense.
Therefore, the prior art is defective, needs to improve.
Utility model content
The technical problem to be solved by the utility model is to provide it is a kind of it is small in size, be convenient for carrying and what is operate is used to examine
Survey the liquid crystal module detection device of response time.
Liquid crystal module response time detection device described in the utility model, for detecting the response time of liquid crystal module,
Including box body, liquid crystal display and driving plate.The box body includes the top plate and bottom plate being parallel to each other, setting in the middle part of the box body
There is partition, the partition is arranged in parallel with the top plate；The partition is arranged in towards the one of the top plate in the liquid crystal module
Face is provided with optic probe in the box body, and the optic probe is fixed on the top plate, and is located at the liquid crystal module just
Top is specifically the surface positioned at the area AA (Active Area, can operating space) of the liquid crystal module；The driving
Plate is arranged on the bottom plate, and the liquid crystal display is arranged on the box body lateral wall, and the driving plate includes FPGA core
Piece, liquid crystal drive interface, probe driving interface and display driving interface；The optic probe passes through the second winding displacement and the probe
Driving interface connection, the liquid crystal module are connect by the first winding displacement with the liquid crystal drive interface, and the liquid crystal display is logical
Third winding displacement is crossed to connect with the display driving interface.
By adopting the above technical scheme, the shape of the box body is unrestricted, can be suitable for cuboid, square, cylindrical body etc.
Shape for application.Pitch-dark, the pitch-dark reflection for reducing light is coated in the inside of the box body, and ambient stable is maintained to make environment
More conducively test.
Using above-mentioned each technical solution, the core component of the optic probe is photoelectric sensor, the photoelectric sensing
Device is used to acquire the brightness change (optical signal) of LCD module under test, and the circuit of the optic probe converts optical signals into telecommunications
Number, by the second winding displacement of optic probe by electric signal transmission to driving plate.
Using above-mentioned each technical solution, the photoelectric sensor model OPT101.OPT101 is two pole of integrated electro
The trans-impedance amplifier of pipe and built-in chip type, output voltage linearly increase with light intensity.Amplifier is that single supply or dual power supply are set
Meter makes it possible to for battery operated device.Integrated photodiode and trans-impedance amplifier on a single chip, in discrete design
In can be reduced common problem, such as leakage current error, noise and the gain peak due to caused by stray capacitance etc..The photoelectricity
The time that sensor OPT101 acquires optical signal is μ s (microsecond) rank, meets the sound of most of liquid crystal module ms (millisecond) rank
Between seasonable.
Using above-mentioned each technical solution, the core of the driving plate is FPGA (Field-Programmable Gate
Array, i.e. field programmable gate array, it is the production further developed on the basis of the programming devices such as PAL, GAL, CPLD
Object, it is that occur as one of application-specific integrated circuit ASIC field semi-custom circuit, both solves custom circuit
Deficiency, and overcome the limited disadvantage of original programming device gate circuit number) chip EP4CE6F17C8N.The chip is exportable
Signal lights LCD module under test, and the variation by detecting electric signal calculates the response time.
Using above-mentioned each technical solution, the signal that the EP4CE6F17C8N chip is output to liquid crystal drive interface is
TTL signal can be changed into mipi signal by increasing by the first signal conversion chip SSD2828QN4 chip, or increased by TTL signal
Add the first signal conversion chip THC63LVDM83D chip that TTL signal is changed into LVDS signal, measurement that can be more general is various
The liquid crystal module of distinct interface.
Using above-mentioned each technical solution, the liquid crystal display is located on box body lateral wall, liquid crystal display display surface
Outwardly, light does not interfere with tray interior environment toward external exposure.The liquid crystal display is mainly used for the sound that display is calculated
Between seasonable.
The working principle (step) of liquid crystal module response time detection device described in the utility model is as follows: by liquid crystal to be measured
Mould group connects upper liquid crystal driving interface by the first winding displacement, and optic probe is connected driving interface of popping one's head in by the second winding displacement,
Liquid crystal display is by showing driving interface in the connection of third winding displacement；Driving plate input rated voltage after the completion of connection, FPGA core
Piece outputs signals to liquid crystal drive interface, is lighted LCD module under test by the first winding displacement, liquid crystal module every 3 seconds automatically from
It is bright dimmed, then from secretly brightening, photoelectric sensor collects the brightness change of LCD module under test, the circuit of optic probe believes light
Number it is converted into electric signal, by the second winding displacement of optic probe by electric signal transmission to driving plate, fpga chip passes through detection electricity
The variation of signal calculates the response time, and driving plate is transferred to the result of calculating by display driving interface and third winding displacement again
Liquid crystal display screen display.
Using above-mentioned each technical solution, the utility model has the following beneficial effects: the box body using japanning protects test
Environment, measurement result are more acurrate；It is highly integrated, it is small in size, it is moved easily；It is easy to operate, do not need professional's operation, measurement
Time is short, automatic measurement after starting, shows result automatically after about 10s；Low cost.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of liquid crystal module response time detection device described in the utility model；
Fig. 2 is the structural schematic diagram of the driving plate of the utility model.
Figure label explanation: 1, box body；2, liquid crystal display；3, driving plate；4, optic probe；5, liquid crystal module；6, every
Plate；21, third winding displacement；31, fpga chip；32, liquid crystal drive interface；33, probe driving interface；34, driving interface is shown；
41, photoelectric sensor；42, the second winding displacement；51, the first winding displacement.
Specific embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in detail.
As depicted in figs. 1 and 2, a kind of liquid crystal module response time detection device is present embodiments provided, for detecting liquid
The response time of brilliant mould group comprising box body (1), liquid crystal display (2) and driving plate (3).Box body (1) includes being parallel to each other
Top plate and bottom plate, box body (1) middle part are provided with partition (6), and partition (6) is arranged in parallel with the top plate.Liquid crystal module (5) is set
The one side in partition (6) towards the top plate is set, is provided with optic probe (4) in box body (1), optic probe (4) is fixed on institute
It states on top plate, and is located at right above liquid crystal module (5), be that (Active Area, can positioned at the area AA of liquid crystal module specifically
Operating space) surface.Driving plate (3) is arranged on the bottom plate, and liquid crystal display (2) is arranged on box body (1) lateral wall,
Driving plate (3) includes fpga chip (31), liquid crystal drive interface (32), probe driving interface (33) and display driving interface
(34).Optic probe (4) is connect by the second winding displacement (42) with probe driving interface (33), and liquid crystal module (5) passes through first row
Line (51) is connect with liquid crystal drive interface (32), and liquid crystal display (2) passes through third winding displacement (21) and display driving interface (34)
Connection.
Further, the shape of box body (1) is unrestricted, can be suitable for application for cuboid, square, cylindrical body etc.
Shape.Pitch-dark, the pitch-dark reflection for reducing light is coated in the inside of box body (1), maintains ambient stable that environment is made to be more conducive to test.
Further, the core component of optic probe (4) is photoelectric sensor (41), and photoelectric sensor (41) is for adopting
Collect the brightness change (optical signal) of LCD module under test, the circuit of the optic probe (4) converts optical signals into electric signal, leads to
The second winding displacement (42) of optic probe is crossed by electric signal transmission to driving plate (3).
Further, photoelectric sensor (41) is OPT101, and the time that OPT101 acquires optical signal is μ s (microsecond) grade
Not, meet the response time of most of liquid crystal module ms (millisecond) rank.
Further, fpga chip (31) is EP4CE6F17C8N, and the EP4CE6F17C8N chip is output to liquid crystal drive
The signal of mobile interface (32) is TTL signal.
Further, TTL signal can be changed into mipi by increasing by the first signal conversion chip SSD2828QN4 chip
Signal, or increase by the first signal conversion chip THC63LVDM83D chip and TTL signal is changed into LVDS signal, it can be more general
Measure the liquid crystal module of various distinct interfaces.
Further, liquid crystal display (2) is located at box body (1) outer wall, and liquid crystal display (2) display faces outwardly, and light is outward
Irradiation, will not influence box body (1) internal environment.Liquid crystal display (2) is mainly used for the response time that display is calculated.
In use, by liquid crystal module to be measured (5) by liquid crystal driving interface (32) in the first winding displacement (51) connection, it will
For optic probe (4) by popping one's head in driving interface (33) in the second winding displacement (42) connection, liquid crystal display (2) passes through third winding displacement
(21) driving interface (34) are shown in connection；Driving plate (3) input rated voltage after the completion of connection, fpga chip (31) output letter
Number arrive liquid crystal drive interface (32), liquid crystal module to be measured (5) is lighted by the first winding displacement (51), liquid crystal module (5) is every 3
Second is automatically from bright dimmed, then from secretly brightening, photoelectric sensor (41) collects the brightness change of liquid crystal module to be measured (5), light
The circuit for learning probe (4) converts optical signals into electric signal, by the second winding displacement (42) of optic probe (4) by electric signal transmission
To driving plate (3), fpga chip (31) calculates the response time by detecting the variation of electric signal, and driving plate (3) is again calculating
Result by display driving interface (34) and third winding displacement (21) be transferred on liquid crystal display (2) and show.
The utility model has the following beneficial effects: using the box body protection test environment of japanning, measurement result is more acurrate；It is high
Degree is integrated, small in size, is moved easily；It is easy to operate, professional's operation is not needed, time of measuring is short, automatic measurement after starting,
Result is shown automatically after about 10s；Low cost.
The above is only the preferred embodiments of the present utility model only, is not intended to limit the utility model, all practical at this
Made any modifications, equivalent replacements, and improvements etc., should be included in the guarantor of the utility model within novel spirit and principle
Within the scope of shield.
Claims (5)
1. a kind of liquid crystal module response time detection device, for detecting the response time of liquid crystal module, which is characterized in that including
Box body, liquid crystal display and driving plate, the box body include the top plate and bottom plate being parallel to each other, be provided in the middle part of the box body every
Plate, the partition are arranged in parallel with the top plate；The partition is arranged in towards the one side of the top plate, institute in the liquid crystal module
It states and is provided with optic probe in box body, the optic probe is fixed on the top plate, and is located at right above the liquid crystal module；
The driving plate is arranged on the bottom plate, and the liquid crystal display is arranged on the box body lateral wall, the driving plate packet
Include fpga chip, liquid crystal drive interface, probe driving interface and display driving interface；The optic probe by the second winding displacement with
The probe driving interface connection, the liquid crystal module are connect by the first winding displacement with the liquid crystal drive interface, the liquid crystal
Display screen is connect by third winding displacement with the display driving interface.
2. liquid crystal module response time detection device according to claim 1, which is characterized in that the inner wall of the box body is equal
It is provided with pitch-dark.
3. liquid crystal module response time detection device according to claim 1, which is characterized in that the optic probe includes
Photoelectric sensor, the photoelectric sensor model OPT101.
4. liquid crystal module response time detection device according to claim 1, which is characterized in that the fpga chip model
For EP4CE6F17C8N.
5. liquid crystal module response time detection device according to claim 4, which is characterized in that further include that the first signal turns
Change chip, the first signal conversion chip model THC63LVDM83D or SSD2828QN4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822123574.4U CN209215783U (en) | 2018-12-17 | 2018-12-17 | A kind of liquid crystal module response time detection device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201822123574.4U CN209215783U (en) | 2018-12-17 | 2018-12-17 | A kind of liquid crystal module response time detection device |
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| CN209215783U true CN209215783U (en) | 2019-08-06 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110927476A (en) * | 2019-10-19 | 2020-03-27 | 中国航空工业集团公司洛阳电光设备研究所 | High-precision display delay testing device and method |
| CN114114725A (en) * | 2020-08-28 | 2022-03-01 | 深圳莱宝高科技股份有限公司 | Method for testing LCM response time and related equipment |
| CN114333658A (en) * | 2021-12-20 | 2022-04-12 | 南京巨鲨显示科技有限公司 | Method and device for testing response time of liquid crystal display system |
-
2018
- 2018-12-17 CN CN201822123574.4U patent/CN209215783U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110927476A (en) * | 2019-10-19 | 2020-03-27 | 中国航空工业集团公司洛阳电光设备研究所 | High-precision display delay testing device and method |
| CN114114725A (en) * | 2020-08-28 | 2022-03-01 | 深圳莱宝高科技股份有限公司 | Method for testing LCM response time and related equipment |
| CN114333658A (en) * | 2021-12-20 | 2022-04-12 | 南京巨鲨显示科技有限公司 | Method and device for testing response time of liquid crystal display system |
| CN114333658B (en) * | 2021-12-20 | 2023-12-01 | 南京巨鲨显示科技有限公司 | Method and device for testing response time of liquid crystal display system |
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