CN109580028A - Heat up measurement method inside display screen - Google Patents
Heat up measurement method inside display screen Download PDFInfo
- Publication number
- CN109580028A CN109580028A CN201811557734.4A CN201811557734A CN109580028A CN 109580028 A CN109580028 A CN 109580028A CN 201811557734 A CN201811557734 A CN 201811557734A CN 109580028 A CN109580028 A CN 109580028A
- Authority
- CN
- China
- Prior art keywords
- display screen
- thermistor
- measurement method
- resistance value
- heat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/16—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements
- G01K7/22—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements the element being a non-linear resistance, e.g. thermistor
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/1306—Details
- G02F1/1309—Repairing; Testing
Abstract
The invention discloses the measurement methods that heats up inside a kind of display screen, comprising: thermistor first step: is arranged in display screen；Second step: obtaining the characteristic curve of thermistor, and the characteristic curve is the relation curve for indicating the resistance value of thermistor and changing with temperature change；Third step: the resistance value of thermistor is persistently detected；Four steps: the soaking condition inside display screen is judged according to the resistance value of the thermistor detected.Heating measurement method can judge the temperature rise in display screen according to the variation of thermistor inside display screen according to the present invention, thus, it is possible to improve the accuracy of heating measurement operation ease and heating measurement, and further can judge whether product is qualified according to heating detection, thus the qualification rate for increasing shipment, extends the service life of display screen finished product.
Description
Technical field
The present invention relates to the measurement methods that heats up inside display apparatus test field more particularly to a kind of display screen.
Background technique
The very big driving capability of some needs of LCD (Liquid Crystal Display, liquid crystal display) module group backlight.
However, the efficiency of the LCD backlight element of such as LED (Light-Emitting Diode, light emitting diode) lamp string etc is not up to
To 100%, the form of small part conversion thermal energy is had within shielding；In this way, continuing with the display screen available machine time, in display screen
Temperature can rise.
Experience have shown that the temperature rise of the component in display screen is every to increase 10 degrees Celsius, the service life of the component in display screen
Half will be shortened.And there is a large amount of IC chips in display screen, so the test of screen temperature rise is one weight of LCD mould group
The performance indicator wanted, it is extremely important for shielding interior temperature detection.
In the prior art, the means of temperature detection are more complicated in shielding, and are not easy to the operation ease of operator, and
And measurement precision is not high.
Therefore, those skilled in the art is dedicated to developing a kind of operation ease and measurement precision of capable of improving
Heat up measurement method inside display screen.
Summary of the invention
In view of the above drawbacks of the prior art, technical problem to be solved by the invention is to provide one kind can improve survey
Measure the measurement method that heats up inside the display screen of operation ease and measurement precision.
To achieve the above object, the present invention provides the measurement methods that heats up inside a kind of display screen, comprising:
First step: thermistor is set in display screen；
Second step: obtaining the characteristic curve of thermistor, the characteristic curve be indicate the resistance value of thermistor with
Temperature change and the relation curve that changes；
Third step: the resistance value of thermistor is persistently detected；
Four steps: the soaking condition inside display screen is judged according to the resistance value of the thermistor detected.
Preferably, the thermistor is negative tempperature coefficient thermistor.
Preferably, first step using thermistor as display screen in circuit element in a manner of be arranged in display screen
Thermistor.
Preferably, second step obtains the characteristic curve of thermistor by experiment measurement.
Preferably, third step is constantly to sample the resistance value of thermistor in a manner of Fixed Time Interval
Mode detect the resistance value of thermistor.
It preferably, whether is more than predetermined resistance range according to the resistance value of the thermistor detected in four steps
To judge whether the temperature inside display screen is increased to more than predetermined temperature range.
Preferably, in four steps, according to the variation of the resistance value of the thermistor detected within a predetermined period of time
Amplitude is come whether judge the heating inside display screen be more than predetermined heating rate.
Preferably, the inside heating that heating measurement method is used to detect liquid crystal display inside the display screen measures.
Heating measurement method can judge display screen according to the variation of thermistor inside display screen according to the present invention
Interior temperature rise, thus, it is possible to improve the accuracy of heating measurement operation ease and heating measurement, and can further root
Judge whether product is qualified according to heating detection, thus increases the qualification rate of shipment, extend the service life of display screen finished product.
It is described further below with reference to technical effect of the attached drawing to design of the invention, specific structure and generation, with
It is fully understood from the purpose of the present invention, feature and effect.
Detailed description of the invention
In conjunction with attached drawing, and by reference to following detailed description, it will more easily have more complete understanding to the present invention
And its adjoint advantage and feature is more easily to understand, in which:
Fig. 1 is the flow chart of heating measurement method inside display screen according to the preferred embodiment of the invention.
It should be noted that attached drawing is not intended to limit the present invention for illustrating the present invention.Note that indicating that the attached drawing of structure can
It can be not necessarily drawn to scale.Also, in attached drawing, same or similar element indicates same or similar label.
Specific embodiment
The present inventor is advantageously discovered that, is typically arranged with temperature-sensitive inside the display screen of such as liquid crystal display etc
Resistance is especially configured with negative temperature coefficient (NTC, Negative temperature coefficient) thermistor, that
The resistance value of thermistor can change with the temperature change in screen；It, can be by measuring temperature-sensitive according to this rule
The resistance value of resistance judges the temperature change in screen
Fig. 1 is the flow chart of heating measurement method inside display screen according to the preferred embodiment of the invention.
Specifically, as shown in Figure 1, heating measurement method includes: inside display screen according to the preferred embodiment of the invention
First step S1: thermistor is set in display screen；
For example, being typically arranged with thermistor inside the display screen of such as liquid crystal display etc；First step S1 as a result,
Thermistor is set in display screen in a manner of the element of circuit in using thermistor as display screen.
Generally, the thermistor is negative tempperature coefficient thermistor.
Second step S2: obtaining the characteristic curve of thermistor, and the characteristic curve is the resistance value for indicating thermistor
The relation curve changed with temperature change；
For example, display screen manufacturer can provide the characteristic curve of thermistor in the product description of display screen.Or
Person can obtain the characteristic curve of thermistor by experiment measurement.
Third step S3: the resistance value of thermistor is persistently detected；Specifically, it is persistently detected under display screen open state
The resistance value of thermistor.
For example, third step S3 is constantly to sample the resistance value of thermistor in a manner of Fixed Time Interval
Mode detect the resistance value of thermistor.
Four steps S4: the soaking condition inside display screen is judged according to the resistance value of the thermistor detected.
Specifically, for example, whether can be more than pre- according to the resistance value of the thermistor detected in the fourth step s 4
Determine resistance range to judge whether the temperature inside display screen is increased to more than predetermined temperature range, it thus can be further according to liter
Temperature detector survey judges whether product is qualified.
It, can be according to the resistance value of the thermistor detected within a predetermined period of time alternatively, in the fourth step s 4
Amplitude of variation come judge heating inside display screen whether be more than predetermined heating rate (i.e., if shield internal heating whether mistake
Fastly), thus further can judge whether product is qualified according to heating detection.
For example, in specific application, heating measurement method is for examining inside display screen according to the preferred embodiment of the invention
The inside for surveying liquid crystal display, which is heated up, to be measured.
Inside display screen according to the preferred embodiment of the invention heating measurement method can according to the variation of thermistor come
Judge the temperature rise in display screen, thus, it is possible to improve the accuracy of heating measurement operation ease and heating measurement, Er Qieke
Further to judge whether product is qualified according to heating detection, thus increases the qualification rate of shipment, extend making for display screen finished product
Use the period.
The preferred embodiment of the present invention has shown and described in above description, as previously described, it should be understood that the present invention is not office
Be limited to form disclosed herein, should not be regarded as an exclusion of other examples, and can be used for various other combinations, modification and
Environment, and can be changed within that scope of the inventive concept describe herein by the above teachings or related fields of technology or knowledge
It is dynamic.And changes and modifications made by those skilled in the art do not depart from the spirit and scope of the present invention, then it all should be appended by the present invention
In scope of protection of the claims.
Claims (8)
1. heat up measurement method inside a kind of display screen, characterized by comprising:
First step: thermistor is set in display screen；
Second step: obtaining the characteristic curve of thermistor, and the characteristic curve is to indicate the resistance value of thermistor with temperature
The relation curve of degree variation and variation；
Third step: the resistance value of thermistor is persistently detected；
Four steps: the soaking condition inside display screen is judged according to the resistance value of the thermistor detected.
2. heat up measurement method inside display screen as described in claim 1, which is characterized in that the thermistor is negative temperature
Coefficient resistance.
3. heat up measurement method inside display screen as claimed in claim 1 or 2, which is characterized in that first step is with temperature-sensitive electricity
It hinders and thermistor is set in display screen as the mode of the element of the circuit in display screen.
4. heat up measurement method inside display screen as claimed in claim 1 or 2, which is characterized in that second step passes through experiment
It measures to obtain the characteristic curve of thermistor.
5. heat up measurement method inside display screen as claimed in claim 1 or 2, which is characterized in that third step is with constantly
The resistance value of thermistor is detected in the way of being sampled in a manner of Fixed Time Interval to the resistance value of thermistor.
6. heat up measurement method inside display screen as claimed in claim 1 or 2, which is characterized in that in four steps, according to
Whether the resistance value of the thermistor detected is more than predetermined resistance range to judge whether the temperature inside display screen is increased to
More than predetermined temperature range.
7. heat up measurement method inside display screen as claimed in claim 1 or 2, which is characterized in that in four steps, according to
The amplitude of variation of the resistance value of the thermistor detected within a predetermined period of time judges whether the heating inside display screen surpasses
Cross predetermined heating rate.
8. heat up measurement method inside display screen as claimed in claim 1 or 2, which is characterized in that risen inside the display screen
Temperature measurement method is used to detect the inside heating measurement of liquid crystal display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811557734.4A CN109580028A (en) | 2018-12-19 | 2018-12-19 | Heat up measurement method inside display screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811557734.4A CN109580028A (en) | 2018-12-19 | 2018-12-19 | Heat up measurement method inside display screen |
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| Publication Number | Publication Date |
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| CN109580028A true CN109580028A (en) | 2019-04-05 |
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| CN201811557734.4A Pending CN109580028A (en) | 2018-12-19 | 2018-12-19 | Heat up measurement method inside display screen |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115798427A (en) * | 2022-11-21 | 2023-03-14 | 信利半导体有限公司 | Liquid crystal display screen heating and brightness adjusting method, display module and electronic equipment |
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| CN101806641A (en) * | 2010-03-18 | 2010-08-18 | 中兴通讯股份有限公司 | Device and method for realizing overheating prompt of mobile terminal |
| CN101922981A (en) * | 2010-09-10 | 2010-12-22 | 中冶南方（武汉）自动化有限公司 | Thermistor temperature detecting method based on DSP (Digital Signal Processing) |
| CN106500863A (en) * | 2016-11-11 | 2017-03-15 | 成都意科科技有限责任公司 | Device for detection LCD monitor power supply |
| CN108225594A (en) * | 2017-12-25 | 2018-06-29 | 青岛海尔科技有限公司 | Obtain method, apparatus, equipment and the readable storage medium storing program for executing of NTC resistance temperatures |
| CN108447442A (en) * | 2018-03-20 | 2018-08-24 | 京东方科技集团股份有限公司 | The control method of display device and display device |
| WO2019018687A1 (en) * | 2017-07-20 | 2019-01-24 | Apple Inc. | Speaker integrated environmental sensors |
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2018
- 2018-12-19 CN CN201811557734.4A patent/CN109580028A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101806641A (en) * | 2010-03-18 | 2010-08-18 | 中兴通讯股份有限公司 | Device and method for realizing overheating prompt of mobile terminal |
| CN101922981A (en) * | 2010-09-10 | 2010-12-22 | 中冶南方（武汉）自动化有限公司 | Thermistor temperature detecting method based on DSP (Digital Signal Processing) |
| CN106500863A (en) * | 2016-11-11 | 2017-03-15 | 成都意科科技有限责任公司 | Device for detection LCD monitor power supply |
| WO2019018687A1 (en) * | 2017-07-20 | 2019-01-24 | Apple Inc. | Speaker integrated environmental sensors |
| CN108225594A (en) * | 2017-12-25 | 2018-06-29 | 青岛海尔科技有限公司 | Obtain method, apparatus, equipment and the readable storage medium storing program for executing of NTC resistance temperatures |
| CN108447442A (en) * | 2018-03-20 | 2018-08-24 | 京东方科技集团股份有限公司 | The control method of display device and display device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115798427A (en) * | 2022-11-21 | 2023-03-14 | 信利半导体有限公司 | Liquid crystal display screen heating and brightness adjusting method, display module and electronic equipment |
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| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190405 |
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| RJ01 | Rejection of invention patent application after publication |