CN110136622A - A kind of display panel, display device, the processing method and processing device for showing data - Google Patents
A kind of display panel, display device, the processing method and processing device for showing data Download PDFInfo
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- CN110136622A CN110136622A CN201810107024.5A CN201810107024A CN110136622A CN 110136622 A CN110136622 A CN 110136622A CN 201810107024 A CN201810107024 A CN 201810107024A CN 110136622 A CN110136622 A CN 110136622A
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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
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
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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
- G09G2320/00—Control of display operating conditions
- G09G2320/04—Maintaining the quality of display appearance
- G09G2320/041—Temperature compensation
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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
- G09G2320/00—Control of display operating conditions
- G09G2320/06—Adjustment of display parameters
- G09G2320/0626—Adjustment of display parameters for control of overall brightness
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- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The invention discloses a kind of display panel, display device, the processing method and processing devices for showing data.Wherein display panel, including be located at rim area driving IC and respectively with drive the IC temperature sensor and at least two thermocouples that are electrically connected；The first thermode and the second thermode of thermocouple are electrically connected to form cold junction and hot junction；Cold junction is located remotely from the rim area of driving IC, and hot junction is located at driving IC, and temperature sensor is located at hot junction, for detecting the first temperature at hot junction；The thermo-electromotive force and the first temperature that driving IC is used to be generated according to thermocouple determine the second temperature at cold junction, the Temperature Distribution of display panel are determined according to the first temperature and second temperature, and carry out compensation data according to display data of the Temperature Distribution to input.The present invention is solved the problems, such as since temperature distribution is non-uniform causes display brightness non-uniform for display panel.
Description
Technical field
The present embodiments relate to field of display technology more particularly to a kind of display panel, display device, show data
Processing method and processing device.
Background technique
In response to the development of information-intensive society, the demand to various types of display devices of display image is continuously increased.Closely
Nian Lai has used such as liquid crystal display (LCD) device, plasma display panel (PDP) and organic light-emitting display device in this way
Series of displays device.
In general, display device includes viewing area and non-display area (rim area), rim area is provided with driving IC, due to driving
The heat that IC work distributes is caused from close driving IC to the separate temperature distributing disproportionation driven from IC in display device, and picture
Plain light emission luminance has temperature dependency, i.e. pixel light emission brightness is affected by temperature and changes, and then display panel is caused to show
Brightness disproportionation, or even further deteriorate the inhomogeneities of display brightness, (for example notebook is electric in biggish display equipment for the problem
Brain) in it is even more serious.
Summary of the invention
In view of this, the purpose of the present invention is to propose to a kind of display panel, display device, show data processing method and
Device, to solve the problems, such as since temperature distribution is non-uniform causes display brightness non-uniform for display panel.
To achieve the above object, the present invention adopts the following technical scheme:
In a first aspect, the embodiment of the invention provides a kind of display panel, including viewing area and around the viewing area
Rim area, further include positioned at the rim area driving IC and respectively with the driving IC temperature sensor being electrically connected and extremely
Few two thermocouples；
The thermocouple includes the first thermode and the second thermode, the first end of first thermode and described second
The first end of thermode is electrically connected, and forms cold junction, the second end of first thermode and the second of second thermode
End is electrically connected with the driving IC respectively, forms hot junction；
The cold junction is located remotely from the rim area of the driving IC, and the hot junction is located at the driving IC
Place, the temperature sensor are located at the hot junction, and the temperature sensor is used to detect the first temperature at the hot junction
Degree；
The thermo-electromotive force and first temperature that the driving IC is used to be generated according to the thermocouple determine described cold
The second temperature of junction determines the Temperature Distribution of the display panel according to first temperature and the second temperature, and
It is compensated according to display data of the Temperature Distribution to input, with the uniform image of display brightness.
Second aspect, the embodiment of the invention provides a kind of display devices, including display surface provided in an embodiment of the present invention
Plate.
The third aspect, the embodiment of the invention provides a kind of processing methods for showing data, comprising:
Obtain the hot junction of at least two thermocouples generate respectively on display panel thermo-electromotive force and the thermocouple
First temperature at place, wherein the hot junction is located at the driving IC in the display floater frame area；
The second temperature at the cold junction of the thermocouple is determined according to the thermo-electromotive force and first temperature,
In, the cold junction is located remotely from the rim area of the driving IC；
According to first temperature and the second temperature, any point on the display panel is determined using boundary element method
Temperature；
According to the temperature of any point on the display panel and display look-up table, generate associated with the display look-up table
Gray scale adjusted value；
It is compensated according to display data of the gray scale adjusted value to any point on the display panel of input.
Fourth aspect, the embodiment of the invention also provides a kind of processing units for showing data, are set to display panel
It drives in IC, comprising:
Thermo-electromotive force and temperature acquisition module, for obtaining the thermoelectricity that at least two thermocouples generate respectively on display panel
The first temperature at the hot junction of kinetic potential and the thermocouple, wherein the hot junction is located at the display floater frame area
At interior driving IC；
Second temperature determining module, for determining the cold of the thermocouple according to the thermo-electromotive force and first temperature
The second temperature of junction, wherein the cold junction is located remotely from the rim area of the driving IC；
Temperature estimation module is used for according to first temperature and the second temperature, using described in boundary element method determination
The temperature of any point on display panel；
Gray scale adjusted value generation module, for according to the temperature of any point on the display panel and display look-up table, life
At gray scale adjusted value associated with the display look-up table；
Compensation data module, for the display data according to gray scale adjusted value to any point on the display panel of input
It compensates.
The beneficial effects of the present invention are: display panel provided by the invention, display device, show data processing method and
Device, by the way that thermocouple is integrated into display panel, specifically by the hot junction of thermocouple be set to driving IC at, and with driving
The thermo-electromotive force of generation is sent to driving IC by IC electrical connection；The temperature sensing being electrically connected with driving IC is set at hot junction
Temperature at the hot junction measured is sent to driving IC by device；Again by being set to the cold junction of thermocouple far from driving
, it can be achieved that being accurately measured indirectly to the temperature of any point in the rim area far from driving IC in the rim area of IC, and at
This is low；Meanwhile using above structure of the present invention, drive IC can be according to the first temperature at hot junction and the at cold junction second temperature
Spend the Temperature Distribution for determining display panel, and according to Temperature Distribution and associated display look-up table to the display data of input into
Row compensation, solves the problems, such as a result, since temperature distribution is non-uniform causes display brightness non-uniform for display panel.
Detailed description of the invention
Exemplary embodiments of the present invention will be described in detail referring to the drawings by general below, makes those skilled in the art
Become apparent from above-mentioned and other feature and advantage of the invention, in attached drawing:
Fig. 1 is Temperature Distribution schematic diagram on display panel provided in an embodiment of the present invention；
Fig. 2 is the part planar structural representation of display panel provided in an embodiment of the present invention；
Fig. 3 is the schematic diagram of the section structure that display panel provided in an embodiment of the present invention is located at the cold junction of thermocouple；
Fig. 4 is the schematic diagram of the section structure that display panel provided in an embodiment of the present invention is located at the hot junction of thermocouple；
Schematic diagram when Fig. 5 is any point on estimation display panel provided in an embodiment of the present invention；
Isoboles when Fig. 6 is any point on estimation display panel provided in an embodiment of the present invention；
Fig. 7 is the structural schematic diagram of thermoelectric pile provided in an embodiment of the present invention；
Fig. 8 is the schematic diagram of the section structure of pixel unit in display panel provided in an embodiment of the present invention；
Fig. 9 is the structural schematic diagram of the temperature difference-voltage testing system provided in an embodiment of the present invention；
Figure 10 is the fitting of the temperature difference and output voltage relationship between hot junction and cold junction provided in an embodiment of the present invention
Curve；
Figure 11 is the flow diagram of the processing method of display data provided in an embodiment of the present invention；
Figure 12 is the schematic diagram of temperature measuring point provided in an embodiment of the present invention；
Figure 13 is the structural block diagram of the processing unit of display data provided in an embodiment of the present invention.
Specific embodiment
To further illustrate the technical scheme of the present invention below with reference to the accompanying drawings and specific embodiments.It is understood that
It is that specific embodiment described herein is used only for explaining the present invention rather than limiting the invention.It further needs exist for illustrating
, only the parts related to the present invention are shown for ease of description, in attached drawing rather than entire infrastructure.
Fig. 1 is Temperature Distribution schematic diagram on display panel provided in an embodiment of the present invention.As shown in Figure 1, display panel packet
Viewing area 100 and the rim area 200 around viewing area 100 are included, at least one driving IC1 is set to rim area 200.Drive IC1
Heat can constantly be distributed when work and spread to viewing area, as distance driving IC1 is more and more remoter, temperature on display panel by
Decrescence small, a-quadrant as shown in Figure 1, B area, the temperature in the region C and the region D are gradually reduced, the distance driving IC1 nearest area A
The temperature of the maximum temperature in domain, the distance driving IC1 farthest region D is minimum.Therefore, when display panel shows image, display
Each regional temperature is unevenly distributed on panel, and pixel light emission brightness has temperature dependency, i.e. pixel light emission brightness is by temperature
It influences and changes, and then cause display panel display brightness uneven.For this purpose, the embodiment of the present invention devises a kind of display panel,
To solve the above problems.
Fig. 2 is the part planar structural representation of display panel provided in an embodiment of the present invention；Fig. 3 is the embodiment of the present invention
The display panel of offer is located at the schematic diagram of the section structure at the cold junction of thermocouple；Fig. 4 is provided in an embodiment of the present invention aobvious
Show the schematic diagram of the section structure that panel is located at the hot junction of thermocouple.With reference to Fig. 2, Fig. 3 and mention 4, the present embodiment provides
A kind of display panel, the display panel include viewing area 100 and the rim area 200 around viewing area 100, further include being located at side
The driving IC1 in frame area 200 and the temperature sensor 3 (referring to fig. 4) and at least two thermocouples being electrically connected respectively with driving IC1
2；
Thermocouple 2 includes the first thermode 21 and the second thermode 22, the first end and the second thermoelectricity of the first thermode 21
The first end 22 of pole is electrically connected, and forms cold junction 202, the second end point of the second end of the first thermode 21 and the second thermode 22
It is not electrically connected with driving IC1, forms hot junction 201；
Cold junction 202 is located remotely from the rim area 200 of driving IC1, and hot junction 201 is located at driving IC1, temperature sensing
Device 3 is located at hot junction 201, and temperature sensor 3 is used to detect the first temperature at hot junction 201；
Thermo-electromotive force and the first temperature that driving IC1 is used to be generated according to thermocouple 2 determine second at cold junction 202
Temperature determines the Temperature Distribution of display panel, and the display according to Temperature Distribution to input according to the first temperature and second temperature
Data compensate, with the uniform image of display brightness.
Wherein, one circuit of the first thermode 21 of thermocouple 2 and the second thermode 22 and driving IC composition, the first thermoelectricity
Pole 21 and the second thermode 22 are made of different conductor or semiconductor material.Temperature at hot junction 201 and cold junction 202
An electromotive force, the direction of the electromotive force and size and the first thermode 21 and the second thermode will be generated when different, in circuit
22 material and hot junction 201 is related with the temperature of cold junction 202, and unrelated with the geomery of thermocouple, and this phenomenon claims
For " pyroelectric effect ", the electromotive force of generation is then known as " thermo-electromotive force ".Therefore, after two thermode material of thermocouple is fixed, heat
Electromotive force is the difference of function of 202 temperature of hot junction 201 and cold junction.As a result, in the present embodiment, drive IC1 according to thermocouple 2
The thermo-electromotive force of generation and the first temperature at hot junction 201 can measure the second temperature at cold junction 202 indirectly, in turn
Only required measurement point in the rim area 200 far from driving IC1 need to can be obtained in one temperature sensor of setting at hot junction 201
Temperature, save temperature sensor, reduce the cost of temperature sensor.
It optionally, can be by temperature sensing since the temperature at the hot junction 201 of thermocouple 2 is to drive the temperature of IC
Device 3 is integrated in driving IC, improves the accuracy of temperature measurement.
In above scheme, with reference to Fig. 3 and Fig. 4, display panel may include substrate 10 and encapsulated layer 12, and thermocouple 2 is set to
10 side of substrate, substrate 10 and encapsulated layer 12 are fitted by being located at the sealant 11 of rim area 200, and the of the first thermode 21
Two ends pass through anisotropy conductiving glue 13 with the second end of the second thermode 22 respectively and are electrically connected with driving IC1.
Optionally, drive the both ends of IC that one thermocouple is respectively set, driving IC is used for according to two of two thermocouples the
One temperature and two second temperatures determine the temperature of any point on display panel.
Illustratively, as shown in figure 5, the temperature at the hot junction of one of thermocouple is Th1, the temperature at cold junction
For Tc1, the temperature at the hot junction of another thermocouple is Th2, and the temperature at cold junction is Tc2, any point on display panel
For P point, the temperature that boundary element method calculates P point can be used.For example, can be obtained with reference to Fig. 6:
eh1+eh2+ec1+ec2+ea=0； (6)
The temperature of P point can be obtained by formula (1), formula (2), formula (3), formula (4), formula (5) and formula (6) are as follows:
Wherein, eh1And eh2Thermal energy stream (thermal energy stream flowing) of the expression hot junction to P point；ec1And ec2Indicate cold junction to P point
Thermal energy stream；R indicates hot junction and the cold junction thermal resistance between P point respectively；Ta indicates room temperature (such as 25 DEG C)；R indicate P point with
Thermal resistance between air；eaThermal energy stream of the expression air to P point.Wherein, r and R can pass through the conventional means such as thermal simulation or measurement
It obtains.
As a result, after the temperature for measuring the multiple discrete measurement points in rim area, boundary element method can be used and calculate display
The temperature of any point in panel.
Based on the structure of above-mentioned display panel, the driving IC1 in the embodiment of the present invention is warm according to the first temperature and second
Spend and use boundary element method to determine display panel Temperature Distribution after, temperature can be carried out to the display data of input according to Temperature Distribution
The luminance compensation of dependence is spent, to improve the uniformity of display panel display brightness.
Illustratively, driving IC can display look-up table according to the pre-stored data generation offset data associated with temperature,
Optionally, gray scale adjusted value associated with temperature can be generated by display look-up table, after driving IC receives display data,
Driving IC according at each pixel temperature and associated gray scale adjusted value generate new display data, drive each pixel to carry out figure
As display.
Display panel provided in this embodiment, by the way that thermocouple to be integrated into display panel, specifically by the heat of thermocouple
Contact is set at driving IC, and is electrically connected with driving IC, and the thermo-electromotive force of generation is sent to driving IC；It is set at hot junction
The temperature sensor being electrically connected with driving IC is set, the temperature at the hot junction measured is sent to driving IC；Again by will be hot
The cold junction of galvanic couple is set in the rim area far from driving IC the temperature, it can be achieved that any point in the rim area far from driving IC
Degree is accurately measured indirectly, and at low cost；Meanwhile using above structure of the present invention, drive IC can be according to hot junction at
Second temperature at first temperature and cold junction determines the Temperature Distribution of display panel, and according to Temperature Distribution and associated aobvious
Show that look-up table compensates the display data of input, is solved as a result, since temperature distribution is non-uniform causes to show for display panel
The problem of showing brightness irregularities.
Optionally, display panel includes multiple thermocouples, and the superposition that joins end to end of multiple thermocouples forms thermoelectric pile, and connects
Place forms multiple hot junctions and multiple cold junctions.
Illustratively, as shown in fig. 7, multiple thermocouples join end to end, superposition forms thermoelectric pile 23, and junction formed it is more
A hot junction 201 and multiple cold junctions 202.Wherein, the thermo-electromotive force size that each thermocouple generates are as follows:
V=(Sb-Sa) * (T2-T1)；
Wherein, Sb indicates the Seebeck coefficient of the second thermode；Sa indicates the Seebeck coefficient of the first thermode；T2 is indicated
Temperature at hot junction；T1 indicates the temperature at cold junction.Wherein, Seebeck coefficient is determined by the material of thermode.
In the present embodiment, the superposition that joins end to end of multiple thermocouples forms thermoelectric pile 23, the thermo-electromotive force that thermoelectric pile 23 generates
Also the superposition of the thermo-electromotive force generated for multiple thermocouples, therefore, the thermo-electromotive force for the thermoelectric pile that n thermocouple is formed are as follows:
V=n (Sb-Sa) * (T2-T1)；
It can be multiplied as a result, and drive the value of IC thermo-electromotive force detected, improve signal-to-noise ratio, at the cold junction for making detection
Temperature it is more acurrate.
Optionally, with reference to Fig. 7, it can be electrically connected complementary amplifier 4 in the thermo-electromotive force output end of hot junction, it will be amplified
Thermo-electromotive force is exported to driving IC through digital analog converter and is calculated, and can further improve the accurate of the temperature at detection cold junction
Property.
Optionally, the first thermode of thermocouple and the second thermode can be with the parts on display panel in above-described embodiment
Film layer is prepared using same technique, to save the process process, reduces cost.
Illustratively, Fig. 8 is the schematic diagram of the section structure of pixel unit in display panel provided in an embodiment of the present invention.Such as
Shown in Fig. 8, viewing area includes intersecting the multiple pixel lists limited by a plurality of grid line and multiple data lines (not shown)
Member, pixel unit include thin film transistor (TFT) 15 and anode 16 and cathode 17 positioned at 15 side of thin film transistor (TFT)；Thin film transistor (TFT)
15 include polysilicon active layer 151, grid 152, source electrode 153 and drain electrode 154, source electrode 153 and drain 154 and polysilicon active layer
151 electrical connections, grid 152 are electrically connected with grid line, and source electrode 153 is electrically connected with data line, and drain electrode 154 is electrically connected with anode 16；
Wherein, grid line and grid 152 are prepared using same technique, and data line and source electrode 153 or drain electrode 154 use same technique system
It is standby.
In the present embodiment, the first thermode and anode 16 are prepared using same technique, while the second thermode and data line
(source electrode 153), grid line (grid 152) or polysilicon active layer 151 are prepared using same technique；Alternatively, the first thermode with
Data line (source electrode 153) is prepared using same technique, while the second thermode and grid line (grid 152) or polysilicon active layer
151 are prepared using same technique.
It should be noted that the pixel unit of the embodiment of the present invention is not limited to above structure, if thermocouple can with it is aobvious
Show that certain conductive film layers in panel are prepared using same technique.
Optionally, thermocouple includes PN junction structure, and cold junction is located at PN junction.Illustratively, the first thermoelectricity of thermocouple
Pole and the second thermode are prepared with polysilicon active layer same layer, and the first thermode doped p-type ion, the second thermode adulterates N
Type ion, cold junction are located at the intersection of P-channel and N-channel.
After tested, when thermocouple includes PN junction structure, the temperature difference of hot junction and cold junction it is every variation 1 DEG C when, thermocouple
The thermo-electromotive force variation of generation is most.Temperature detection can be improved when carrying out temperature detection using the thermocouple of PN junction structure as a result,
Accuracy, and temperature or the thermo-electromotive force of generation are hardly influenced by visible light, ultraviolet and infrared ray.
Specifically, Fig. 9 is the structural schematic diagram of the temperature difference-voltage testing system provided in an embodiment of the present invention.Such as Fig. 9 institute
Show, which includes test board, the first temperature sensor Ta, second temperature sensor Tb, heater electricity
Source, potentiometer V and galvanometer A, wherein test board includes glass substrate, heater 20 and thermoelectric pile on glass substrate,
The hot junction 201 of thermoelectric pile is located on heater 20, and the cold junction 202 of thermoelectric pile is located at the two sides of heater 20, heater 20
Material can be tin indium oxide, the both ends of heater 20 are electrically connected with heater power source, and the electric current that heater power source exports can
It adjusts, the size that heater power source exports electric current to heater 20 is observed by galvanometer A, to control the temperature of heater 20；
Potentiometer V is electrically connected with the port of the cold junction 202 of 20 two sides of heater respectively, and the thermoelectricity for detecting thermoelectric pile generation is dynamic
Gesture, the first temperature sensor Ta are used to measure the temperature of cold junction 202, and second temperature sensor Tb is for measuring hot junction 201
Temperature, the first temperature sensor Ta and second temperature sensor Tb can be non-contact temperature sensor.Illustratively, originally
Thermoelectric pile to be tested can be superimposed by 100 thermocouples and be formed in embodiment, and to the first thermode, (material is indium oxide respectively
Tin) thermoelectricity that use the preparation of same technique, the second thermode (material is titanium) and data line to prepare using same technique with anode
Even, the first thermode (material is titanium) and data line use same technique preparation, the second thermode (material is aluminium) and grid line
The thermocouple prepared using same technique, and the thermocouple being made of PN junction structure (material is silicon), the thermoelectricity of three kinds of structures
The thermoelectric pile occasionally formed is tested.With reference to Figure 10, as seen from Figure 10, when the first thermode and data line of thermocouple
When being prepared using the preparation of same technique, the second thermode and grid line using same technique, the thermo-electromotive force variable quantity of thermoelectric pile
It is 0.46mV/ DEG C；When the first thermode and anode of thermocouple are used using the preparation of same technique, the second thermode and data line
When prepared by same technique, the thermo-electromotive force variable quantity of thermoelectric pile is 0.72mV/ DEG C；When thermocouple includes PN junction structure, thermoelectricity
The thermo-electromotive force variable quantity of heap is 5.68mV/ DEG C.It can thus be seen that when thermocouple includes PN junction structure, single thermocouple
Thermo-electromotive force variable quantity it is maximum.
Thermocouple provided in this embodiment by PN junction structure composition, the thermo-electromotive force of generation is with hot junction and cold junction temperature
The variable quantity of difference is maximum, and the accuracy of temperature detection can be improved.
The embodiment of the invention also provides a kind of display device, which includes the aobvious of any of the above-described embodiment offer
Show panel.Wherein, display device can be mobile phone, computer, television set and intelligence wearing display equipment etc., the present embodiment to this not
Make particular determination.
In addition, the embodiment of the invention also provides a kind of processing method for showing data, the processing method of the display data
The case where suitable for carrying out the luminance compensation of temperature dependency to display data.This method can be by the processing unit of display data
It executes, the processing unit of the display data can be set in driving IC, and can carry out reality by the mode of software and/or hardware
It is existing.Figure 11 is the flow diagram of the processing method of display data provided in an embodiment of the present invention.As shown in figure 11, the display number
According to processing method include:
Step 110, the heat for obtaining at least two thermocouples generate respectively on display panel thermo-electromotive force and thermocouple
First temperature of junction.
Wherein, hot junction is located at the driving IC in display floater frame area；Thermocouple includes the first thermode and second
Thermode, the first end of the first thermode are electrically connected with the first end of the second thermode, form cold junction, and the of the first thermode
Two ends are electrically connected with driving IC respectively with the second end of the second thermode, form hot junction；First thermode of thermocouple and
Two thermodes and driving IC form a circuit, and the first thermode and the second thermode are by different conductors or semiconductor material group
At when hot junction and temperature difference at cold junction, a thermo-electromotive force being generated in circuit, the heat can be detected in driving IC
Electromotive force.In addition, the temperature sensor being electrically connected with driving IC, the heat that temperature sensor will test can be arranged at hot junction
First temperature of junction is sent to driving IC.
Step 120 determines the second temperature at the cold junction of thermocouple according to thermo-electromotive force and the first temperature.
Wherein, cold junction is located remotely from the rim area of driving IC；Due to the direction of thermo-electromotive force and size and the first heat
The material and hot junction of electrode and the second thermode are related with the temperature of cold junction, and unrelated with the geomery of thermocouple, because
This, after two thermode material of thermocouple is fixed, thermo-electromotive force is the difference of function of hot junction and cold junction temperature, likewise,
The second temperature at the cold junction of thermocouple can also be determined according to thermo-electromotive force and the first temperature.
Step 130, according to the first temperature and second temperature, the temperature of any point on display panel is determined using boundary element method
Degree.
Specifically, the temperature of multiple measurement points in display floater frame area at multiple hot junctions and multiple cold junctions can be obtained
Degree generates the temperature interpolation of any point on display panel using interpolation algorithm according to the temperature of multiple measurement points.For example, as schemed
Shown in 12, the temperature of 12 measurement points 300 in display floater frame area is obtained, at this point, can go out to be arranged in each measurement point 300 cold
Contact calculates 12 surveys according to the relationship for the thermo-electromotive force that the temperature of thermojunction and cold junction and thermocouple generate
The temperature of amount point 300；Further according to 12 measurement points 300 temperature using existing interpolation algorithm (such as closest interpolation method and double
Linear quadratic interpolation method) etc. estimate the temperature interpolation of any point on display panel.The result shows that being distributed phase with reference temperature
Than the Temperature Distribution estimated using boundary element method, maximum temperature error is less than 3 DEG C.Therefore, it can be shown using boundary element method
Accurate Temperature Distribution on panel.
Step 140, temperature and display look-up table according to any point on display panel, generate associated with display look-up table
Gray scale adjusted value.
Wherein, display look-up table indicate the corresponding relationship of temperature Yu gray scale adjusted value, input a temperature just correspond to it is defeated
A kind of gray scale adjusted value out.
Step 150 is compensated according to display data of the gray scale adjusted value to any point on the display panel of input.
Receive display data after, according at each pixel temperature and associated gray scale adjusted value generate new display
Data, the image for driving each pixel to carry out brightness uniformity are shown.
It is provided in this embodiment display data processing method, can according at hot junction the first temperature and cold junction at
Second temperature determines the Temperature Distribution of display panel, and the display according to Temperature Distribution and associated display look-up table to input
Data compensate, and are solved the problems, such as a result, since temperature distribution is non-uniform causes display brightness non-uniform for display panel.
Correspondingly, the embodiment of the invention also provides a kind of processing unit for showing data, the processing dress of the display data
It sets in the driving IC that may be disposed at display panel, Figure 13 is the structure of the processing unit of display data provided in an embodiment of the present invention
Block diagram, as shown in figure 13, the processing unit of the display data includes:
Thermo-electromotive force and temperature acquisition module 31, for obtaining the heat that at least two thermocouples generate respectively on display panel
The first temperature at the hot junction of electromotive force and thermocouple, wherein hot junction is located at the driving IC in display floater frame area
Place；
Second temperature determining module 32, for determining at the cold junction of thermocouple according to thermo-electromotive force and the first temperature
Two temperature, wherein cold junction is located remotely from the rim area of driving IC；
Temperature estimation module 33, for being determined on display panel using boundary element method according to the first temperature and second temperature
The temperature of any point；
Gray scale adjusted value generation module 34 is generated for the temperature and display look-up table according to any point on display panel
Gray scale adjusted value associated with display look-up table；
Compensation data module 35, for according to gray scale adjusted value to the display data of any point on the display panel of input into
Row compensation.
Optionally, temperature estimation module includes:
Multi-point temperature acquiring unit is more at multiple hot junctions and multiple cold junctions in display floater frame area for obtaining
The temperature of a measurement point；
Temperature interpolation generation unit is generated on display panel for the temperature according to multiple measurement points using interpolation algorithm
The temperature interpolation of any point.
The processing unit of display data provided in this embodiment, with display data provided by any embodiment of the invention
Processing method belongs to same inventive concept, and the processing method of display data provided by any embodiment of the invention, tool can be performed
Standby corresponding function and beneficial effect.The not technical detail of detailed description in the present embodiment, reference can be made to the present invention is arbitrarily implemented
The processing method for the display data that example provides.
Note that the above is only a better embodiment of the present invention and the applied technical principle.It will be appreciated by those skilled in the art that
The invention is not limited to the specific embodiments described herein, be able to carry out for a person skilled in the art it is various it is apparent variation,
It readjusts, be combined with each other and substitutes without departing from protection scope of the present invention.Therefore, although by above embodiments to this
Invention is described in further detail, but the present invention is not limited to the above embodiments only, is not departing from present inventive concept
In the case of, it can also include more other equivalent embodiments, and the scope of the invention is determined by the scope of the appended claims.
Claims (10)
1. a kind of display panel, including viewing area and around the rim area of the viewing area, which is characterized in that further include being located at institute
The temperature sensor and at least two thermocouples stating the driving IC of rim area and being electrically connected respectively with the driving IC；
The thermocouple includes the first thermode and the second thermode, the first end of first thermode and second thermoelectricity
The first end of pole is electrically connected, and forms cold junction, the second end point of the second end of first thermode and second thermode
It is not electrically connected with the driving IC, forms hot junction；
The cold junction is located remotely from the rim area of the driving IC, and the hot junction is located at the driving IC, institute
It states temperature sensor to be located at the hot junction, the temperature sensor is used to detect the first temperature at the hot junction；
The thermo-electromotive force and first temperature that the driving IC is used to be generated according to the thermocouple determine the cold junction
The second temperature at place, determines the Temperature Distribution of the display panel according to first temperature and the second temperature, and according to
The Temperature Distribution and associated display look-up table compensate the display data of input, are uniformly schemed with display brightness
Picture.
2. display panel according to claim 1, which is characterized in that the heat is respectively arranged in the both ends of the driving IC
Galvanic couple, the driving IC are used to be determined according to two first temperature of two thermocouples and two second temperatures
The temperature of any point on the display panel.
3. display panel according to claim 1, which is characterized in that the display panel includes multiple thermocouples,
The superposition that joins end to end of multiple thermocouples forms thermoelectric pile, and junction forms multiple hot junctions and multiple cold junctions.
4. display panel according to claim 1, which is characterized in that the viewing area includes by a plurality of grid line and a plurality of
Data line intersects multiple pixel units for limiting, and the pixel unit includes thin film transistor (TFT) and is located at the thin film transistor (TFT)
The anode and cathode of side；The thin film transistor (TFT) includes polysilicon active layer, grid, source electrode and drain electrode, the source electrode and institute
It states drain electrode to be electrically connected with the polysilicon active layer, the grid is electrically connected with the grid line, the source electrode and the data
Line electrical connection, the drain electrode are electrically connected with the anode；
First thermode and the anode are second thermode and the data line, described using the preparation of same technique
Grid line or the polysilicon active layer are prepared using same technique；Alternatively, first thermode and the data line use
Same technique preparation, second thermode and the grid line or the polysilicon active layer are prepared using same technique.
5. display panel according to claim 1, which is characterized in that the thermocouple includes PN junction structure, the cold joint
Point is located at PN junction.
6. a kind of display device, which is characterized in that including display panel as described in any one in claim 1-5.
7. a kind of processing method for showing data characterized by comprising
At the hot junction for obtaining at least two thermocouples generate respectively on display panel thermo-electromotive force and the thermocouple
First temperature, wherein the hot junction is located at the driving IC in the display floater frame area；
The second temperature at the cold junction of the thermocouple is determined according to the thermo-electromotive force and first temperature, wherein institute
Cold junction is stated to be located remotely from the rim area of the driving IC；
According to first temperature and the second temperature, the temperature of any point on the display panel is determined using boundary element method
Degree；
According to the temperature of any point on the display panel and display look-up table, ash associated with the display look-up table is generated
Spend adjusted value；
It is compensated according to display data of the gray scale adjusted value to any point on the display panel of input.
8. the processing method of display data according to claim 7, which is characterized in that it is described according to first temperature and
The second temperature, the step of determining the temperature of any point on the display panel using boundary element method include:
Obtain the temperature of multiple measurement points in the display floater frame area at multiple hot junctions and multiple cold junctions
Degree；
According to the temperature of the multiple measurement point, the temperature interpolation of any point on the display panel is generated using interpolation algorithm.
9. a kind of processing unit for showing data, is set in the driving IC of display panel characterized by comprising
Thermo-electromotive force and temperature acquisition module, for obtaining the thermo-electromotive force that at least two thermocouples generate respectively on display panel
And the first temperature at the hot junction of the thermocouple, wherein the hot junction is located in the display floater frame area
It drives at IC；
Second temperature determining module, for determining the cold junction of the thermocouple according to the thermo-electromotive force and first temperature
The second temperature at place, wherein the cold junction is located remotely from the rim area of the driving IC；
Temperature estimation module, for determining the display using boundary element method according to first temperature and the second temperature
The temperature of any point on panel；
Gray scale adjusted value generation module, for according to the temperature of any point on the display panel and display look-up table, generate with
The associated gray scale adjusted value of display look-up table；
Compensation data module, for being carried out according to display data of the gray scale adjusted value to any point on the display panel of input
Compensation.
10. the processing unit of display data according to claim 9, which is characterized in that the temperature estimation module includes:
Multi-point temperature acquiring unit, for obtaining multiple hot junctions and multiple cold joints in the display floater frame area
The temperature of multiple measurement points at point；
Temperature interpolation generation unit generates the display surface using interpolation algorithm for the temperature according to the multiple measurement point
The temperature interpolation of any point on plate.
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| CN110136622B (en) | 2022-09-23 |
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