CN202141674U - Light transmittance detection device for smectic phase liquid crystal display - Google Patents
Light transmittance detection device for smectic phase liquid crystal display Download PDFInfo
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- CN202141674U CN202141674U CN201120234702U CN201120234702U CN202141674U CN 202141674 U CN202141674 U CN 202141674U CN 201120234702 U CN201120234702 U CN 201120234702U CN 201120234702 U CN201120234702 U CN 201120234702U CN 202141674 U CN202141674 U CN 202141674U
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- liquid crystal
- crystal display
- transmittance
- display screen
- smectic liquid
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Abstract
The utility model discloses a light transmittance detection device for a smectic phase liquid crystal display, which comprises a screen fixing device arranged between a laser source and a transmission light receiving device. The screen fixing device is provided with a non-light-transmitting baffle provided with a transmission hole, and a screen support used for supporting a dispaly is arranged on the non-light-transmitting baffle on one side facing the laser source. The transmission light receiving device comprises a casing, a receiving hole is arranged on the casing, and a transmission light receiving circuit is arranged in the casing. The laser source is oppositely arranged with a transmission hole on the non-light-transmitting baffle, and the transmission hole on the non-light-transmitting baffle is oppositely arranged with the receiving hole on the casing. An output end of the transmission light receiving circuit, a rank electrode driving control end of the display arranged on the screen support and a signal input and output end of an upper computer are all connected with corresponding signal input and output ends arranged on a driving device. The light transmittance detection device can automatically measure the light transmittance of the smectic phase liquid crystal display in various display states, needs no manual operation, and is accurate and reliable in results.
Description
Technical field
The utility model relates to a kind of transmittance pick-up unit, refers to that especially a kind of smectic liquid crystal display screen uses the transmittance pick-up unit.
Background technology
LCD is one of at present the most promising flat-panel display device; Traditional LCD all is passive demonstration, and promptly transmission-type shows, only just can show adding under the condition of backlight; But the power consumption of backlight is more than the hundred times of the power consumption of liquid crystal own, very power consumption.Along with the development of liquid crystal technology, various liquid crystal materials emerge in an endless stream, and wherein do not need the reflective liquid crystal of backlight to rely on its low-power consumption characteristic to have absolute predominance.Smectic liquid crystal display screen in the Chinese invention patent " driving circuit for smectic state LCD display " (patent No. is ZL200710304409.2) (be called not only smectic liquid crystal display screen) a kind of just reflective liquid crystal that adopted---the reflection display device that need not backlight that smectic phase liquid crystal (but also being called smectic liquid crystal) is processed.This smectic liquid crystal display screen is with its distinctive film surface characteristic and reflection-type displaying principle; Realized a kind of need not backlight, simple in structure, the visual angle is extensive, picture is steady, the display device of real safety and environmental protection, power saving; And it has advantages such as long-term memory function and user's indefatigability, in the ranks of display, maintains the leading position.
At present; For the existing transmittance measurement mechanism that is applied to above-mentioned smectic liquid crystal display screen; Generally be to drive smectic liquid crystal display screen through voltage signal earlier; Make it be rendered as certain show state to be measured, and then be fixed on the support of transmittance measurement mechanism, the show state that comes it is appeared carries out the measurement of transmittance.If measure the transmittance of the another kind of show state of this smectic liquid crystal display screen, then want earlier smectic liquid crystal display screen to be taken off from this transmittance measurement mechanism, it is carried out voltage signal drive; After making it be rendered as another kind of show state to be measured, on the support of this transmittance measurement mechanism that is fixed back again, and carry out the measurement of transmittance; It is thus clear that; This measuring process is very loaded down with trivial details, wastes time and energy, and; Each drive show state that smectic liquid crystal display screen appeared might not be exactly to measure the sort of show state of transmittance, this can make that efficiency of measurement greatly reduces.
The utility model content
The purpose of the utility model is to provide a kind of smectic liquid crystal display screen to use the transmittance pick-up unit, and this device can carry out the automatic measurement of transmittance to the various show states of smectic liquid crystal display screen.
To achieve these goals, the utility model has adopted following technical scheme:
A kind of smectic liquid crystal display screen is used the transmittance pick-up unit; It is characterized in that: it comprises lasing light emitter, screen stationary installation, transmitted light receiving trap, drive unit and host computer; This screen stationary installation is arranged between this lasing light emitter and this transmitted light receiving trap; Wherein: this screen stationary installation comprises the non-light transmittance baffle plate, offers beam orifice on this non-light transmittance baffle plate, and this non-light transmittance baffle plate is provided with the screen carriage that is used for holding smectic liquid crystal display screen towards a side of this lasing light emitter; This transmitted light receiving trap comprises shell, offers receiver hole on this shell, is provided with the transmitted light receiving circuit in this shell; The corresponding setting of beam orifice on this lasing light emitter and this non-light transmittance baffle plate; The signal input output end of the output terminal of the transmitted light receiving circuit in the corresponding setting of receiver hole on the beam orifice on this non-light transmittance baffle plate and the shell of this transmitted light receiving trap, this shell, the row-column electrode drive controlling end that is placed on this smectic liquid crystal display screen on this screen carriage, this host computer respectively with this drive unit on accordingly signal input output end link to each other.
The utility model has the advantages that:
1, through drive unit the show state of smectic liquid crystal display screen is carried out drive controlling; The utility model can be measured the transmittance of smectic liquid crystal display screen under various show states automatically; Need not manually-operated; Practiced thrift human cost, measurement result is accurate, reliable, and can determine bad smectic liquid crystal display screen according to the transmittance result.The utility model is not only applicable to the smectic liquid crystal display screen, is applicable to the LCDs of other types yet.
2, host computer can be according to measuring the resulting result of the transmittance of smectic liquid crystal display screen under various show states, and the voltage magnitude, frequency, pulse of drawing out the pulse signal of transmittance and the driving row-column electrode of smectic liquid crystal display screen under various show states are to the curve relation figure between the number.
3, through the utility model the transmittance of smectic liquid crystal display screen under the bright and vaporific lucifuge state of full impregnated carried out repeated measurement, can reach the effect of the smectic liquid crystal display screen being carried out burin-in process.
4, can accurately test shade of gray, the black white contrast of smectic liquid crystal display screen through the utility model.
Description of drawings
Fig. 1 is the composition synoptic diagram of the utility model;
Fig. 2 is the composition block diagram of transmitted light receiving circuit.
Embodiment
The application of the utility model is smectic liquid crystal display screen (being called smectic liquid crystal display screen again).This smectic liquid crystal display screen comprises first base layer and second base layer.The material of first base layer and second base layer is chosen as transparent glass or plastics.Between first base layer and second base layer, be provided with mixolimnion, mixolimnion comprises smectic liquid crystal and conducting objects.For example, mixolimnion can be mixed by smectic liquid crystal, conducting objects, spacer, and perhaps, mixolimnion comprises and is encapsulated in the potpourri of being made up of smectic liquid crystal, conducting objects and spacer in the polymer architecture.Smectic liquid crystal (being called the smectic phase liquid crystal again) can be the category-A smectic liquid crystal, like the compound etc. of band siloxy.Conducting objects can be the compound of band conductive characteristic, like cetyltriethylammonium bromide etc.Spacer can be transparent batching sphere or the spacer rod that materials such as glass are processed.Polymer architecture is the transparent configuration of the setting shape with chamber of polymerizable molecular material or material heat curing of unimolecule body or ultra-violet curing formation.Be coated with first conductive electrode layer at first base layer towards a side of mixolimnion; Be coated with second conductive electrode layer at second base layer towards a side of mixolimnion; First conductive electrode layer is made up of M strip line electrode that is arranged in parallel; Second conductive electrode layer is made up of N strip row electrode that is arranged in parallel; N row electrode of the M of first conductive electrode layer column electrode and second conductive electrode layer be quadrature and form the pixel array of a M * N mutually, and a column electrode and a row electrode form a pixel.This first and second conductive electrode layer has formed a capacitance structure that area is very big with middle mixolimnion.First conductive electrode layer and second conductive electrode layer are transparent, and it can be ITO (tin indium oxide) etc., and can use auxiliary metal electrode as required, like aluminium, copper, silver etc.Each pixel can come externally to demonstrate different show states through the pulse signal on control row corresponding with it, the row electrode, for example, and the bright state of full impregnated, vaporific lucifuge state, various progressive gray scale states.If be added with dichroic dye again in the mixolimnion of smectic liquid crystal display screen, versicolor dichroic dye such as for example red, green, yellow, then its pixel also can demonstrate the color of dichroic dye.
Like Fig. 1; The utility model smectic liquid crystal display screen comprises lasing light emitter 10, screen stationary installation 20, transmitted light receiving trap 30, drive unit 60 (like FPGA, CPLD) and host computer 70 with the transmittance pick-up unit; This host computer 70 can comprise display device; This screen stationary installation 20 is arranged between this lasing light emitter 10 and this transmitted light receiving trap 30; Wherein: this screen stationary installation 20 comprises non-light transmittance baffle plate (processing as adopting plastic material) 25, offers beam orifice 251 on this non-light transmittance baffle plate 25, and this non-light transmittance baffle plate 25 is provided with the screen carriage 23 that is used for holding smectic liquid crystal display screen 50 towards a side of this lasing light emitter 10; This transmitted light receiving trap 30 comprises shell, and this shell is supported by support 40, offers receiver hole 36 on this shell, is provided with transmitted light receiving circuit (not shown) in this shell; Beam orifice 251 corresponding settings on this lasing light emitter 10 and this non-light transmittance baffle plate 25; The signal input output end of the output terminal of the transmitted light receiving circuit in the receiver hole 36 corresponding settings on the beam orifice 251 on this non-light transmittance baffle plate 25 and the shell of this transmitted light receiving trap 30, this shell, the row-column electrode drive controlling end that is placed on this smectic liquid crystal display screen 50 on this screen carriage 23, this host computer 70 respectively with this drive unit 60 on accordingly signal input output end link to each other.
In reality was implemented, this lasing light emitter 10 can adopt the He-Ne Lasers source, and its laser beam of launching is approximate directional light.
Like Fig. 1; This screen stationary installation 20 also can comprise vertical adjustment bracket institution 21 and lateral adjustment mount mechanism 22; This lateral adjustment mount mechanism 22 of scalable beam orifice 251 lateral attitudes is located at the bottom of non-light transmittance baffle plate 25; The lower end of this lateral adjustment mount mechanism 22 is provided with this vertical adjustment bracket institution 21 of scalable beam orifice 251 vertical height, and like this, the position of beam orifice 251 just can be regulated with lateral adjustment mount mechanism 22 through vertical adjustment bracket institution 21; Thereby make the center and the coaxial setting in the center of receiver hole 36 of beam orifice 251, to guarantee the accurate measurement of transmittance.Like Fig. 1, also can be provided with on the non-light transmittance baffle plate 25 and be used for fastening smectic liquid crystal display screen 50 and prevent its geometrical clamp that comes off 24.
Like Fig. 2, the transmitted light receiving circuit comprises optical receiving circuit 31, first and second overvoltage crowbars 32,34, first and second amplifying circuits 33,35.The output terminal of this optical receiving circuit 31 is connected with the input end of second amplifying circuit 35 via first overvoltage crowbar 32, first amplifying circuit 33, second overvoltage crowbar 34 successively, and corresponding signal input output end is connected on the output terminal of this second amplifying circuit 35 and the drive unit 60.This optical receiving circuit 31 comprises photodiode, the receiving end of this photodiode and receiver hole 36 corresponding settings.
This first amplifying circuit 33 and second amplifying circuit 35 constitute by operational amplifier.This first overvoltage crowbar 32 is used for preventing that spike from causing damage to the operational amplifier of first amplifying circuit 33, and this second overvoltage crowbar 34 is used to guarantee safety, the steady operation of transmitted light receiving circuit.
The course of work of the utility model is:
Open lasing light emitter 10; By the calibration software in the host computer 70; The height of manual shift vertical adjustment bracket institution 21 and the lateral attitude of lateral adjustment mount mechanism 22, up to the center of the center of beam orifice 251 and receiver hole 36 on same straight line, to accomplish calibration operation.Then, close lasing light emitter 10, smectic phase LCDs 50 (seeing the frame of broken lines shown in the label 50 among Fig. 1) is placed on the screen carriage 23, and make pixel to be measured zone and beam orifice 251 corresponding putting on this smectic liquid crystal display screen 50.In reality was implemented, this pixel to be measured zone just can the transmittance of whole this smectic liquid crystal display screen 50 of corresponding representative under various show states at the transmittance under the various show states.Then, this smectic liquid crystal display screen 50 is fixed, corresponding signal input output end on the row-column electrode drive controlling end of this smectic liquid crystal display screen 50 and this drive unit 60 is connected with geometrical clamp 24.Then; Open lasing light emitter 10; Through host computer 70 accessory drives 60; Make drive unit 60 on the corresponding line of this smectic liquid crystal display screen 50, row electrode, apply corresponding pulse signal, this pixel to be measured zone on this smectic liquid crystal display screen is rendered as the corresponding show state that will measure transmittance.At this moment; Pixel to be measured zone on this smectic liquid crystal display screen 50 is crossed in approximate parallel rays directive that lasing light emitter 10 is launched and transmission; Pass beam orifice 251 (25 on non-light transmittance baffle plate allows light behind display screen 50, to be penetrated by beam orifice 251), the directive receiver hole 36 then.Photodiode in the transmitted light receiving trap 30 receives the light of injecting receiver hole 36; After converting light into electric signal, carry out secondary via first amplifying circuit 33, second amplifying circuit 35 one by one and amplify the back and carry out sending into host computer 70 after the analog to digital conversion through drive unit 60.Then, host computer 70 is handled according to the digital signal that receives, and just obtains this transmittance of pixel to be measured zone under this show state.
In a word; Through host computer 70 (artificial or automatic) pulse signal on the corresponding row-column electrode that is applied to smectic liquid crystal display screen 50 is controlled, thereby the pixel to be measured zone on this smectic liquid crystal display screen 50 (is generally the bright state of full impregnated and two kinds of show states of vaporific lucifuge state) under different show states transmittance is carried out continuously or measurement off and on.In addition; Also can make the pixel to be measured zone on the smectic liquid crystal display screen 50 be in a certain show state; The frequency, voltage magnitude, pulse of under this show state, regulating pulse signal be to parameters such as numbers, thereby determine the corresponding optimum pulse signal of this show state.
In actual detected, through the utility model the transmittance of smectic liquid crystal display screen under the bright and vaporific lucifuge state of full impregnated carried out repeated measurement, also can reach the effect of the smectic liquid crystal display screen being carried out burin-in process.In addition, also can accurately test shade of gray, the black white contrast of smectic liquid crystal display screen through the utility model.
In actual detected, also can determine bad smectic liquid crystal display screen according to the transmittance result.Specifically; When the pulse of the pulse signal that applies is accumulated to a setting value to number; And the measured transmittance that obtains is not when still reaching in the scope that sets; Host computer 70 just decidable goes out this smectic liquid crystal display screen 50 and is " defective products ", thereby accessory drive 60 quits work, and detects and finishes.
In the utility model; First overvoltage crowbar 32, second overvoltage crowbar 34, first amplifying circuit 33, second amplifying circuit 35, vertical adjustment bracket institution 21, lateral adjustment mount mechanism 22, drive unit 60 etc. are knows technology, here no longer to its concrete constitute detail.
The utility model has the advantages that: the show state of smectic liquid crystal display screen is carried out drive controlling through drive unit; The utility model can be measured the transmittance of smectic liquid crystal display screen under various show states automatically; Need not manually-operated; Practiced thrift human cost, measurement result accurately, reliably.The utility model is not only applicable to the smectic liquid crystal display screen, is applicable to the LCDs of other types yet.
The above is preferred embodiment of the utility model and the know-why of being used thereof; For a person skilled in the art; Under the situation of spirit that does not deviate from the utility model and scope; Any based on conspicuous changes such as the equivalent transformation on the utility model technical scheme basis, simple replacements, all belong within the utility model protection domain.
Claims (7)
1. a smectic liquid crystal display screen is used the transmittance pick-up unit; It is characterized in that: it comprises lasing light emitter, screen stationary installation, transmitted light receiving trap, drive unit and host computer; This screen stationary installation is arranged between this lasing light emitter and this transmitted light receiving trap; Wherein: this screen stationary installation comprises the non-light transmittance baffle plate, offers beam orifice on this non-light transmittance baffle plate, and this non-light transmittance baffle plate is provided with the screen carriage that is used for holding smectic liquid crystal display screen towards a side of this lasing light emitter; This transmitted light receiving trap comprises shell, offers receiver hole on this shell, is provided with the transmitted light receiving circuit in this shell; The corresponding setting of beam orifice on this lasing light emitter and this non-light transmittance baffle plate; The signal input output end of the output terminal of the transmitted light receiving circuit in the corresponding setting of receiver hole on the beam orifice on this non-light transmittance baffle plate and the shell of this transmitted light receiving trap, this shell, the row-column electrode drive controlling end that is placed on this smectic liquid crystal display screen on this screen carriage, this host computer respectively with this drive unit on accordingly signal input output end link to each other.
2. smectic liquid crystal display screen as claimed in claim 1 is used the transmittance pick-up unit, it is characterized in that: said lasing light emitter is the He-Ne Lasers source.
3. smectic liquid crystal display screen as claimed in claim 1 is used the transmittance pick-up unit; It is characterized in that: said screen stationary installation comprises vertical adjustment bracket institution and lateral adjustment mount mechanism; This lateral adjustment mount mechanism of scalable beam orifice lateral attitude is located at the bottom of said non-light transmittance baffle plate, and the lower end of this lateral adjustment mount mechanism is provided with this vertical adjustment bracket institution of scalable beam orifice vertical height; Said non-light transmittance baffle plate is provided with the geometrical clamp that is used for fastening said smectic liquid crystal display screen.
4. smectic liquid crystal display screen as claimed in claim 1 is used the transmittance pick-up unit; It is characterized in that: said transmitted light receiving circuit comprises optical receiving circuit, first and second overvoltage crowbars, first and second amplifying circuits; Wherein: the output terminal of this optical receiving circuit is connected with the input end of second amplifying circuit via this first overvoltage crowbar, first amplifying circuit, second overvoltage crowbar successively, and corresponding signal input output end is connected on the output terminal of this second amplifying circuit and the said drive unit.
5. smectic liquid crystal display screen as claimed in claim 4 is used the transmittance pick-up unit, it is characterized in that: said optical receiving circuit comprises photodiode, the receiving end of this photodiode and the corresponding setting of said receiver hole.
6. smectic liquid crystal display screen as claimed in claim 1 is used the transmittance pick-up unit, it is characterized in that: the center of said beam orifice and the coaxial setting in the center of said receiver hole.
7. smectic liquid crystal display screen as claimed in claim 1 is used the transmittance pick-up unit, it is characterized in that: said host computer comprises display device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120234702U CN202141674U (en) | 2011-07-05 | 2011-07-05 | Light transmittance detection device for smectic phase liquid crystal display |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120234702U CN202141674U (en) | 2011-07-05 | 2011-07-05 | Light transmittance detection device for smectic phase liquid crystal display |
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| CN202141674U true CN202141674U (en) | 2012-02-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201120234702U Expired - Lifetime CN202141674U (en) | 2011-07-05 | 2011-07-05 | Light transmittance detection device for smectic phase liquid crystal display |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102540521A (en) * | 2012-03-08 | 2012-07-04 | 歌尔声学股份有限公司 | System and method for testing transmittance of liquid crystal display (LCD) panel |
| CN102645764A (en) * | 2012-04-20 | 2012-08-22 | 歌尔声学股份有限公司 | Liquid crystal display (LCD) transmissivity testing method and device |
| CN102692753A (en) * | 2012-05-24 | 2012-09-26 | 宁波大学 | Device and method for controlling intermediate state of polymer dispersed liquid crystal |
| CN104181106A (en) * | 2013-05-27 | 2014-12-03 | 深圳市海洋王照明工程有限公司 | Transparent member light transmittance test tooling |
| CN108490661A (en) * | 2018-05-23 | 2018-09-04 | 昆山龙雨智能科技有限公司 | A kind of display screen optical detection apparatus |
| CN108761861A (en) * | 2018-05-23 | 2018-11-06 | 昆山龙雨智能科技有限公司 | A kind of screen detection device |
| CN108983448A (en) * | 2018-05-23 | 2018-12-11 | 昆山龙雨智能科技有限公司 | A kind of screen detection device |
| CN109752871A (en) * | 2019-03-21 | 2019-05-14 | 京东方科技集团股份有限公司 | A kind of device and method for testing display panel transmitance |
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2011
- 2011-07-05 CN CN201120234702U patent/CN202141674U/en not_active Expired - Lifetime
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102540521A (en) * | 2012-03-08 | 2012-07-04 | 歌尔声学股份有限公司 | System and method for testing transmittance of liquid crystal display (LCD) panel |
| CN102645764A (en) * | 2012-04-20 | 2012-08-22 | 歌尔声学股份有限公司 | Liquid crystal display (LCD) transmissivity testing method and device |
| CN102645764B (en) * | 2012-04-20 | 2015-03-25 | 歌尔声学股份有限公司 | Liquid crystal display (LCD) transmissivity testing method and device |
| CN102692753A (en) * | 2012-05-24 | 2012-09-26 | 宁波大学 | Device and method for controlling intermediate state of polymer dispersed liquid crystal |
| CN102692753B (en) * | 2012-05-24 | 2014-12-10 | 宁波大学 | Device and method for controlling intermediate state of polymer dispersed liquid crystal |
| CN104181106A (en) * | 2013-05-27 | 2014-12-03 | 深圳市海洋王照明工程有限公司 | Transparent member light transmittance test tooling |
| CN108490661A (en) * | 2018-05-23 | 2018-09-04 | 昆山龙雨智能科技有限公司 | A kind of display screen optical detection apparatus |
| CN108761861A (en) * | 2018-05-23 | 2018-11-06 | 昆山龙雨智能科技有限公司 | A kind of screen detection device |
| CN108983448A (en) * | 2018-05-23 | 2018-12-11 | 昆山龙雨智能科技有限公司 | A kind of screen detection device |
| CN108490661B (en) * | 2018-05-23 | 2024-01-23 | 昆山龙雨智能科技有限公司 | Display screen optical detection device |
| CN108983448B (en) * | 2018-05-23 | 2024-01-23 | 昆山龙雨智能科技有限公司 | Screen detection device |
| CN108761861B (en) * | 2018-05-23 | 2024-01-30 | 昆山龙雨智能科技有限公司 | Screen detection device |
| CN109752871A (en) * | 2019-03-21 | 2019-05-14 | 京东方科技集团股份有限公司 | A kind of device and method for testing display panel transmitance |
| CN109752871B (en) * | 2019-03-21 | 2021-11-23 | 京东方科技集团股份有限公司 | Equipment and method for testing transmittance of display panel |
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Granted publication date: 20120208 |