CN106373513A - Liquid crystal display aging test method and liquid crystal display - Google Patents
Liquid crystal display aging test method and liquid crystal display Download PDFInfo
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- CN106373513A CN106373513A CN201611030140.9A CN201611030140A CN106373513A CN 106373513 A CN106373513 A CN 106373513A CN 201611030140 A CN201611030140 A CN 201611030140A CN 106373513 A CN106373513 A CN 106373513A
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- liquid crystal
- crystal display
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- display
- display panels
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Liquid Crystal Display Device Control (AREA)
- Liquid Crystal (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The invention discloses a liquid crystal display aging test method comprising the following steps: after detecting an aging test signal, an aging test module of a timing controller sends a first command signal to a timing control module of the timing controller; and the timing control module outputs a display signal to a liquid crystal display panel according to the first command signal in order to drive the liquid crystal display panel in a point reversing mode. The liquid crystal display aging test method of the invention has high bad block rate. The invention further discloses a liquid crystal display.
Description
Technical field
The present invention relates to display device technology field, more particularly, to a kind of ageing testing method of liquid crystal display and
Plant liquid crystal display.
Background technology
With the birth of increasing display device and brand, liquid crystal display (liquid crystal display,
Lcd competition) is also more and more fierce, then the requirement to liquid crystal display for the client is also with regard to more and more higher, client or liquid crystal
Abnormal article is blocked inspection before being desirable in module shipment and is arrived by Shi Qi manufacturer, in order to avoid impacting to client.
If having damage for liquid crystal cell and module portion material but showing that N/R liquid crystal display flows to client, its
The problems such as maximum liquid crystal cell (cell) line defect of middle ratio, electronic component slight damage, easily lead during client's use
Liquid crystal display is caused flaw (for example breaking, corrosion etc.) to occur or extremely, has serious impact to product quality, so now
A variety of method of testings are had to be suggested, such as aging test (burn-in test).With the application of new technology, new design,
Conventional burn-in test cannot meet the power consumption requirements of load burning machine it is impossible to largely effective block inspection to all of defective products,
Lead to that bad to block inspection rate low.
Content of the invention
The technical problem to be solved is to provide a kind of bad aging survey blocking the high liquid crystal display of inspection rate
Method for testing and a kind of liquid crystal display.
To achieve these goals, embodiment of the present invention adopts the following technical scheme that
On the one hand, provide a kind of ageing testing method of liquid crystal display, comprising:
After the burn-in test module of time schedule controller detects burn-in test signal, send the first command signal to sequential control
The time-sequence control mode of device processed；And
Described time-sequence control mode, is used for making to display panels according to described first command signal output display signal
Described display panels realize dot inversion type of drive.
It is wherein, described that " described time-sequence control mode is according to described first command signal output display signal to liquid crystal display
Panel " includes:
Described display signal output is to the data drive circuit electrically connecting described display panels；
The data signal of described display signal is converted into data voltage by described data drive circuit, and according to described display
The polar signal of signal inverts the polarity of described data voltage, then exports described data voltage to described display panels,
So that described display panels are driven by dot inversion type of drive.
Wherein, the ageing testing method of described liquid crystal display also includes:
After described burn-in test module detects described burn-in test signal, send the second command signal to the integrated electricity of power supply
Road；
Described power IC is according to described second command signal output detection gamma reference voltage to described liquid crystal
Show panel.
Wherein, described detection gamma reference voltage is higher than standard gamma reference voltage, is used for making described display panels
Carry out heavy duty display, described standard gamma reference voltage is that described display panels are normal shows required gamma benchmark electricity
Pressure.
Wherein, described detection gamma reference voltage and the ratio of described standard gamma reference voltage are in the range of 1 to 1.2.
Wherein, described burn-in test signal is formed using built-in self test.
On the other hand, also provide a kind of liquid crystal display, including display panels and time schedule controller, described sequential control
Device processed includes burn-in test module and time-sequence control mode, and described burn-in test module is used for detecting burn-in test signal
Afterwards, send the first command signal to described time-sequence control mode, described time-sequence control mode is used for according to the described first instruction letter
Number output display signal to described display panels so that described display panels realize dot inversion type of drive.
Wherein, described liquid crystal display also includes electrically connecting the data drive circuit of described display panels, described number
It is used for for the data signal of described display signal being converted into data voltage, and the polarity according to described display signal according to drive circuit
Signal inverts the polarity of described data voltage, then exports described data voltage to described display panels, with anti-by point
Turn type of drive and drive described display panels.
Wherein, described liquid crystal display also includes power IC, and described power IC is used for receiving described old
Change the second command signal that test module is sent after detecting described burn-in test signal, and according to the described second instruction letter
Number output detection gamma reference voltage is to described display panels.
Wherein, described detection gamma reference voltage is higher than standard gamma reference voltage, is used for making described display panels
Carry out heavy duty display, described standard gamma reference voltage is that described display panels are normal shows required gamma benchmark electricity
Pressure.
Compared to prior art, the method have the advantages that
The ageing testing method of liquid crystal display described in the embodiment of the present invention is by making the described liquid of described liquid crystal display
LCD panel realizes dot inversion type of drive, to increase the power consumption of described liquid crystal display, reaches heavy duty, the purpose of burning machine,
Correlation so as to more precisely detect out portion's material and liquid crystal cell is bad, improves and bad blocks inspection rate so that described liquid crystal
Show the product quality of device more preferably.
Brief description
In order to be illustrated more clearly that technical scheme, below by the accompanying drawing work to use required in embodiment
Simply introduce it should be apparent that, drawings in the following description are only some embodiments of the present invention, general for this area
For logical technical staff, on the premise of not paying creative work, other accompanying drawings can also be obtained as these accompanying drawings.
Fig. 1 is a kind of flow chart of the ageing testing method of liquid crystal display provided in an embodiment of the present invention.
Fig. 2 is a kind of schematic block diagram of liquid crystal display provided in an embodiment of the present invention.
Fig. 3 be a kind of ageing testing method of liquid crystal display provided in an embodiment of the present invention step step21～
The flow chart of step22.
Fig. 4 is a kind of step step3～step4 of the ageing testing method of liquid crystal display provided in an embodiment of the present invention
Flow chart.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation description is it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of not making creative work
Embodiment, broadly falls into the scope of protection of the invention.
Additionally, the explanation of following embodiment is with reference to additional diagram, the spy implementing in order to illustrate the present invention may be used to
Determine embodiment.The direction term being previously mentioned in the present invention, for example, " on ", D score, "front", "rear", "left", "right", " interior ",
" outward ", " side " etc., is only the direction with reference to annexed drawings, and therefore, the direction term of use is to more preferably, more clearly say
Bright and understand the present invention, rather than instruction or infer the device of indication or element must have specific orientation, with specifically side
Position construction and operation, are therefore not considered as limiting the invention.
In describing the invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection ", " on being arranged on ... " should be interpreted broadly, for example, it may be being fixedly connected or removably connecting
Connect, or be integrally connected；Can be to be mechanically connected；Can be to be joined directly together it is also possible to be indirectly connected to by intermediary, can
To be the connection of two element internals.For the ordinary skill in the art, above-mentioned term can be understood with concrete condition
Concrete meaning in the present invention.
Additionally, in describing the invention, unless otherwise stated, " multiple " are meant that two or more.If this
The term of " operation " occurs in description, it refers not only to independent operation, when cannot clearly distinguish with other operations, as long as
The effect desired by this operation that enables then is also included within this term.In addition, in this specification with "～" the numerical value model that represents
Enclose refer to using "～" before and after the scope that is included as minima and maximum of numerical value recorded.In the accompanying drawings, structure
Similar or identical unit is indicated by the same numeral.
See also Fig. 1 and Fig. 2, the embodiment of the present invention provides a kind of ageing testing method of liquid crystal display, is used for
Burn-in test is carried out to liquid crystal display 100.The ageing testing method of described liquid crystal display includes:
The burn-in test module (aging detect) 11 of step1: time schedule controller (tcon ic) 10 detects aging survey
After trial signal, send the time-sequence control mode (control timing block) to time schedule controller 10 for first command signal
12；
Step2: described time-sequence control mode 12 is according to described first command signal output display signal to LCD
Plate (panel) 20, is used for making described display panels 20 realize dot inversion (dot inversion) type of drive.
In the present embodiment, the ageing testing method of described liquid crystal display is by making the institute of described liquid crystal display 100
State display panels 20 and realize dot inversion type of drive, to increase the power consumption of described liquid crystal display 100, reach heavy duty, burning
The purpose of machine, such that it is able to more precisely detect out portion's material and the correlation of liquid crystal cell is bad, improves and bad blocks inspection rate so that institute
State the product quality of liquid crystal display 100 more preferably.
It should be understood that described first command signal includes the letter making described display panels 20 carry out dot inversion driving
Breath.Dot inversion type of drive refers to, under same frame picture, each point (sub-pixel) up and down four point adjacent with oneself
(sub-pixel) keeps contrary polarity.The drive waveforms of dot inversion with an addressing time (1hsync cycle), as unit, are
A kind of type of drive of altofrequency reversion, power consumption is very big, so that described display panels 20 realize heavy duty display.
Further, see also Fig. 1 to Fig. 3, as a kind of optional embodiment, described " described sequencing contro mould
Block 12 is according to described first command signal output display signal to display panels 20 (step2) " include:
Step21: described display signal output is to the data drive circuit 30 electrically connecting described display panels 20
(source driver ic)；
The data signal (date) of described display signal is converted into data electricity by step22: described data drive circuit 30
Pressure, and the polarity of described data voltage is inverted according to the polar signal (pol) of described display signal, then export described data electricity
It is depressed into described display panels 20, so that described display panels 20 are driven by dot inversion type of drive.
Described display signal also includes source initial pulse (ssp), source shift clock (ssc) and source output and enables (soc)
Etc. control signal (control singles).
Further, Fig. 1, Fig. 2 and Fig. 4 are seen also, as a kind of optional embodiment, described liquid crystal display
Ageing testing method also include:
Step3: after described burn-in test module 11 detects described burn-in test signal, send the second command signal to electricity
Source integrated circuit 40 (power ic)；
Step4: described power IC 40 is according to described second command signal output detection gamma (gamma) benchmark electricity
It is depressed into described display panels 20.
Preferably, described detection gamma reference voltage is higher than standard gamma reference voltage, is used for making described LCD
Plate 20 carries out heavy duty display, and described standard gamma reference voltage is the gamma required for described display panels 20 normally show
Reference voltage.
In the present embodiment, the ageing testing method of described liquid crystal display passes through to increase output to described LCD
The gamma reference voltage of plate 20, can make described display panels 20 reach the purpose of liquid crystal cell heavy duty (cell stress),
Improve the power consumption of described liquid crystal display 100 further, raising is bad to block inspection rate.
Preferably, the ratio of described detection gamma reference voltage and described standard gamma reference voltage 1 to 1.2 scope
Interior.Described detection gamma reference voltage exports to the described data drive circuit 30 of described display panels 20.
It should be understood that after described burn-in test module 11 detects described burn-in test signal, institute can be simultaneously emitted by
State the first command signal and described second command signal.
Further, as a kind of optional embodiment, described burn-in test signal adopts built-in self test
(built in self test, bist) is formed.Now, in the case of there is no clock signal input, described built-in self-test
Technology can ensure that described display panels 20 carry out the switching of picture automatically, for example aging pattern white/black/redness/
Green/blue (aging pattern white/black/red/green/blue).
See also Fig. 1 and Fig. 2, the embodiment of the present invention also provides a kind of liquid crystal display 100, including LCD
Plate 20 and time schedule controller 10.Described time schedule controller 10 includes burn-in test module 11 and time-sequence control mode 12.Described old
Change test module 11 to be used for, after detecting burn-in test signal, sending the first command signal to described time-sequence control mode 12.
Described time-sequence control mode 12 is used for according to described first command signal output display signal to described display panels 20, with
Described display panels 20 are made to realize dot inversion type of drive.
In the present embodiment, described liquid crystal display 100 can make described display panels when carrying out burn-in test
20 realize dot inversion type of drive, to increase the power consumption of described liquid crystal display 100, reach heavy duty, the purpose of burning machine, so as to
Enough more precisely detect out portion's material and the correlation of liquid crystal cell is bad, improve and bad block inspection rate so that described liquid crystal display 100
Product quality more preferably.
It should be understood that the function of described burn-in test module 11 and described time-sequence control mode 12 can be described by write
The program in machine code of time schedule controller 10 is supported.
Further, see also Fig. 1 to Fig. 3, as a kind of optional embodiment, described liquid crystal display 100 is also
Including the data drive circuit 30 electrically connecting described display panels 20, described data drive circuit 30 is used for described display
The data signal of signal is converted into data voltage, and inverts the pole of described data voltage according to the polar signal of described display signal
Property, then export described data voltage to described display panels 20, so that described liquid crystal is driven by dot inversion type of drive
Display floater 20.
Further, Fig. 1, Fig. 2 and Fig. 4 are seen also, as a kind of optional embodiment, described liquid crystal display
100 also include power IC 40, and described power IC 40 is used for receiving described burn-in test module 11 and is detecting
The second command signal being sent after described burn-in test signal, and according to described second command signal output detection gamma benchmark
Voltage is to described display panels 20.
Preferably, described detection gamma reference voltage is higher than standard gamma reference voltage, is used for making described LCD
Plate 20 carries out heavy duty display, and described standard gamma reference voltage is the gamma required for described display panels 20 normally show
Reference voltage.
In the present embodiment, output can be increased to described display panels 20 by described power IC 40
Gamma reference voltage, makes described display panels 20 reach the purpose of liquid crystal cell heavy duty (cell stress), improves further
The power consumption of described liquid crystal display 100, raising is bad to block inspection rate.
Preferably, the ratio of described detection gamma reference voltage and described standard gamma reference voltage 1 to 1.2 scope
Interior.Described detection gamma reference voltage exports to the described data drive circuit 30 of described display panels 20.
Above the embodiment of the present invention is described in detail, specific case used herein to the principle of the present invention and
Embodiment is set forth, and the explanation of above example is only intended to help and understands the method for the present invention and its core concept；
Simultaneously for one of ordinary skill in the art, according to the thought of the present invention, all can in specific embodiments and applications
In place of having change, in sum, this specification content should not be construed as limitation of the present invention.
Claims (10)
1. a kind of ageing testing method of liquid crystal display is it is characterised in that include:
After the burn-in test module of time schedule controller detects burn-in test signal, send the first command signal to time schedule controller
Time-sequence control mode；And
Described time-sequence control mode is used for making described according to described first command signal output display signal to display panels
Display panels realize dot inversion type of drive.
2. the ageing testing method of liquid crystal display as claimed in claim 1 is it is characterised in that described " described sequencing contro
Module is according to described first command signal output display signal to display panels " include:
Described display signal output is to the data drive circuit electrically connecting described display panels；
The data signal of described display signal is converted into data voltage by described data drive circuit, and according to described display signal
Polar signal invert the polarity of described data voltage, then export described data voltage to described display panels, with logical
Cross dot inversion type of drive and drive described display panels.
3. the ageing testing method of liquid crystal display as claimed in claim 1 or 2 is it is characterised in that described liquid crystal display
Ageing testing method also include:
After described burn-in test module detects described burn-in test signal, send the second command signal to power IC；
Described power IC is according to described second command signal output detection gamma reference voltage to described LCD
Plate.
4. the ageing testing method of liquid crystal display as claimed in claim 3 is it is characterised in that described detection gamma benchmark is electric
Pressure is higher than standard gamma reference voltage, is used for making described display panels carry out heavy duty display, described standard gamma benchmark electricity
Press the gamma reference voltage required for showing for described display panels are normal.
5. the ageing testing method of liquid crystal display as claimed in claim 4 is it is characterised in that described detection gamma benchmark is electric
Pressure and the ratio of described standard gamma reference voltage are in the range of 1 to 1.2.
6. the ageing testing method of liquid crystal display as claimed in claim 1 is it is characterised in that described burn-in test signal is adopted
Formed with built-in self test.
7. a kind of liquid crystal display is it is characterised in that include display panels and time schedule controller, described time schedule controller bag
Include burn-in test module and time-sequence control mode, described burn-in test module is used for, after detecting burn-in test signal, sending
First command signal gives described time-sequence control mode, and described time-sequence control mode is used for aobvious according to described first command signal output
Show signal to described display panels, so that described display panels realize dot inversion type of drive.
8. liquid crystal display as claimed in claim 7 is it is characterised in that described liquid crystal display also includes electrically connecting described liquid
The data drive circuit of LCD panel, described data drive circuit is used for being converted into counting by the data signal of described display signal
According to voltage, and the polarity of the polar signal described data voltage of reversion according to described display signal, then export described data electricity
It is depressed into described display panels, so that described display panels are driven by dot inversion type of drive.
9. liquid crystal display as claimed in claim 7 or 8 it is characterised in that described liquid crystal display also to include power supply integrated
Circuit, described power IC is used for receiving described burn-in test module and is sent after detecting described burn-in test signal
The second command signal, and according to described second command signal output detection gamma reference voltage to described display panels.
10. liquid crystal display as claimed in claim 9 is it is characterised in that described detection gamma reference voltage is higher than standard gal
Horse reference voltage, is used for making described display panels carry out heavy duty display, described standard gamma reference voltage is described liquid crystal
Display floater is normal to show required gamma reference voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611030140.9A CN106373513A (en) | 2016-11-15 | 2016-11-15 | Liquid crystal display aging test method and liquid crystal display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611030140.9A CN106373513A (en) | 2016-11-15 | 2016-11-15 | Liquid crystal display aging test method and liquid crystal display |
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| Publication Number | Publication Date |
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| CN106373513A true CN106373513A (en) | 2017-02-01 |
Family
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| CN201611030140.9A Pending CN106373513A (en) | 2016-11-15 | 2016-11-15 | Liquid crystal display aging test method and liquid crystal display |
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Cited By (3)
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| CN106918933A (en) * | 2017-03-10 | 2017-07-04 | 京东方科技集团股份有限公司 | Contrast test system |
| CN113948024A (en) * | 2021-09-28 | 2022-01-18 | 惠科股份有限公司 | Display panel aging test method and device, display panel and storage medium |
| CN114019268A (en) * | 2021-09-30 | 2022-02-08 | 惠科股份有限公司 | Aging test method, device, equipment and storage medium |
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Application publication date: 20170201 |