CN105469740B - Active matrix/organic light emitting display and its driving method - Google Patents
Active matrix/organic light emitting display and its driving method Download PDFInfo
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- CN105469740B CN105469740B CN201510938371.9A CN201510938371A CN105469740B CN 105469740 B CN105469740 B CN 105469740B CN 201510938371 A CN201510938371 A CN 201510938371A CN 105469740 B CN105469740 B CN 105469740B
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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
- G09G3/22—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 using controlled light sources
- G09G3/30—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 using controlled light sources using electroluminescent panels
- G09G3/32—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
Abstract
The present invention provides a kind of active matrix/organic light emitting display and its driving methods, wherein, active matrix/organic light emitting display includes: OLED screen body and the driving device to drive OLED screen body, driving device includes gamma generator, temperature compensation unit and adder, the output end of gamma generator and temperature compensation unit is connect with the input terminal of adder, gamma generator is for providing data-signal, temperature compensation unit is used to incude the temperature change of OLED screen body and exports thermal compensation signal, adder is for being overlapped data-signal and thermal compensation signal to obtain driving signal.In active matrix/organic light emitting display provided by the invention and its driving method, the thermal compensation signal of OLED screen temperature is obtained using temperature compensation unit, and the data-signal that thermal compensation signal is generated with gamma generator is overlapped, to realize effect temperature compensation, improve display problem caused by changing due to screen temperature.
Description
Technical field
The present invention relates to technical field of flat panel display, in particular to a kind of active matrix/organic light emitting display and its driving
Method.
Background technique
In recent years, with the fast development and application of information technology, radio mobile communication and information household appliances, people are to electronics
The dependence of product is growing day by day, more brings flourishing for various display technologies and display device.Panel display apparatus has
Fully planarize, be light, is thin, power saving the features such as, therefore be widely used.
Wherein, active matrix/organic light emitting display (full name in English Active Matrix Organic Lighting
Emitting Display, abbreviation AMOLED) it is a kind of utilization thin film transistor (TFT) (full name in English Thin Film
Transistor, abbreviation TFT) control Organic Light Emitting Diode (full name in English Organic Lighting Emitting
Diode, abbreviation OLED) panel display apparatus of display image is carried out, display mode and traditional tft liquid crystal are aobvious
Show device (full name in English Thin Film Transistor liquid crystal display, abbreviation TFT-LCD) display mode
Difference is not necessarily to backlight, moreover, having many advantages, such as contrast height, fast response time, wide, frivolous visual angle.Therefore, active
Matrix organic light-emitting display is known as that the display of a new generation of Thin Film Transistor-LCD can be replaced.
However, the characteristic of TFT and OLED in AMOLED can all change with the variation of screen temperature.Therefore,
The brightness of AMOLED and chromaticity coordinates can also change with the variation of screen temperature.Brightness and color in order to ensure AMOLED
Coordinate will not change with the variation of temperature, industry generally use following two mode to the brightness of AMOLED and chromaticity coordinates into
Row amendment: first way is that the size of input voltage is controlled according to the screen temperature of measurement；The second way is according to survey
The screen temperature of amount modifies video data code.But both modes are all defective.First way is due to power circuit
Need to possess biggish load capacitance amount to adjust the size of input voltage, thus it is inefficient.The second way can then reduce
The dynamic range of video data.
Base this, how to solve existing active matrix/organic light emitting display because shield temperature variation due to cause brightness and color
The problem of coordinate changes, at those skilled in the art's technical problem urgently to be resolved.
Summary of the invention
The purpose of the present invention is to provide a kind of active matrix/organic light emitting display and its driving methods, existing to solve
Active matrix/organic light emitting display because shield temperature variation due to cause brightness and chromaticity coordinates to change the problem of.
To solve the above problems, the present invention provides a kind of active matrix/organic light emitting display, the active matrix is organic
Active display includes: OLED screen body and the driving device to drive the OLED screen body；The driving device includes gal
The output end of horse generator, temperature compensation unit and adder, the gamma generator and temperature compensation unit adds with described
The input terminal of musical instruments used in a Buddhist or Taoist mass connects, and the gamma generator is used to video data code conversion be data-signal, the temperature-compensating
Unit is used to incude the temperature change of the OLED screen body and exports thermal compensation signal, and the adder is used for the data-signal
It is overlapped with thermal compensation signal to obtain driving signal.
Optionally, in the active matrix/organic light emitting display, the temperature compensation unit includes temperature sensing
Device and offset generator；The temperature-sensitive sticker is used to detect the temperature of the OLED screen body, and by temperature signal collected
It is supplied to the offset generator；The offset generator exports thermal compensation signal according to the temperature signal.
Optionally, in the active matrix/organic light emitting display, the driving device further includes output buffer,
The output buffer is set between the adder and the OLED screen body, for caching to the driving signal.
Correspondingly, the present invention also provides a kind of driving method of active matrix/organic light emitting display, the active square
Battle array organic light emitting display driving method include:
The temperature of OLED screen body is detected, and thermal compensation signal is obtained according to temperature signal；
Video data code is provided, and is data-signal by the video data code conversion；
The thermal compensation signal and the data-signal are overlapped, to obtain driving signal；And
The OLED screen body is driven using the driving signal.
The present invention also provides a kind of active matrix/organic light emitting display, the active matrix/organic light emitting display packet
It includes: OLED screen body and the driving device to drive the OLED screen body；The driving device includes gamma generator, temperature
Compensating unit, gamma reference voltage generator and adder, the gamma reference voltage generator and temperature compensation unit it is defeated
Outlet is connect with the input terminal of the adder, and the gamma reference voltage generator is for providing gamma reference voltage, institute
Temperature compensation unit is stated for incuding the temperature change of the OLED screen body and exporting thermal compensation signal, the adder is used for institute
It states gamma reference voltage and thermal compensation signal is overlapped to obtain offset data signal, the gamma generator and the adder
Output end connection, for according to the offset data signal provide driving signal.
Optionally, in the active matrix/organic light emitting display, the temperature compensation unit includes temperature sensing
Device and offset generator；The temperature-sensitive sticker is used to detect the temperature of the OLED screen body, and by temperature signal collected
It is supplied to the offset generator；The offset generator exports thermal compensation signal according to the temperature signal.
Optionally, in the active matrix/organic light emitting display, the driving device further includes output buffer,
The output buffer is set between the gamma generator and the OLED screen body, for delaying to the driving signal
It deposits.
Correspondingly, the present invention also provides a kind of driving method of active matrix/organic light emitting display, the active square
Battle array organic light emitting display driving method include:
The temperature of OLED screen body is detected, and thermal compensation signal is obtained according to temperature signal；
Gamma reference voltage is provided, and the thermal compensation signal is overlapped with gamma reference voltage, to obtain compensation number
It is believed that number；
Video data code is provided；
Driving signal is obtained according to the offset data signal and video data code；
The OLED screen body is driven using the driving signal.
In active matrix/organic light emitting display provided by the invention and its driving method, obtained by temperature compensation unit
The thermal compensation signal of OLED screen temperature is obtained, and the data-signal that the thermal compensation signal is generated with gamma generator is overlapped,
To realize effect temperature compensation, improve display problem caused by changing due to screen temperature.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the active matrix/organic light emitting display of the embodiment of the present invention one；
Fig. 2 is the flow chart of the driving method of the active matrix/organic light emitting display of the embodiment of the present invention one；
Fig. 3 is the structural schematic diagram of the active matrix/organic light emitting display of the embodiment of the present invention two；
Fig. 4 is the flow chart of the driving method of the active matrix/organic light emitting display of the embodiment of the present invention two.
Specific embodiment
Below in conjunction with the drawings and specific embodiments to a kind of active matrix/organic light emitting display proposed by the present invention and its
Driving method is described in further detail.According to following explanation and claims, advantages and features of the invention will be become apparent from.
It should be noted that attached drawing is all made of very simplified form and using non-accurate ratio, only conveniently, lucidly to assist
Illustrate the purpose of the embodiment of the present invention.
[embodiment one]
Referring to FIG. 1, its structural schematic diagram for the active matrix/organic light emitting display of the embodiment of the present invention one.Such as figure
Shown in 1, the active matrix/organic light emitting display includes: OLED screen body (not shown) and to drive the OLED
Shield the driving device 20 of body, the driving device 20 includes temperature compensation unit, gamma generator 25 and adder 27, the gal
The output end of horse generator 25 and temperature compensation unit is connect with the input terminal of the adder 27, the gamma generator 25
For being data-signal by video data code conversion, the temperature that the temperature compensation unit is used to incude the OLED screen body becomes
Change and export thermal compensation signal, the adder 27 is used to for the data-signal and thermal compensation signal being overlapped to obtain driving letter
Number.
Specifically, the temperature compensation unit includes temperature-sensitive sticker 21 and offset generator 23, the temperature-sensitive sticker
21 output end is connect with the input terminal of the offset generator 23, and the temperature-sensitive sticker 21 is for detecting the OLED screen body
Temperature, and temperature signal collected is supplied to the offset generator 23.The offset generator 23 is based on external defeated
The temperature signal entered generates thermal compensation signal, and the thermal compensation signal is supplied to the adder 27.The gamma generator 25
For being data-signal by video data code conversion, and the data-signal is supplied to the adder 27.The addition
The data-signal received and thermal compensation signal are overlapped by device 27, to obtain driving signal.
With continued reference to FIG. 1, the driving device 20 further includes output buffer 29, the output buffer 29 is set to
Between the adder 27 and the OLED screen body, for being cached to the driving signal, the output of the adder 27
Connecting with the OLED screen body by the output buffer 29 is held, the driving signal is mentioned via the output buffer 29
The OLED screen body is supplied, the OLED screen body is driven.
In the present embodiment, the thermal compensation signal of the OLED screen temperature is obtained by the temperature compensation unit, and by institute
It states the data-signal that thermal compensation signal is generated with the gamma generator 25 to be overlapped, using superimposed driving signal to described
OLED screen body is driven.Since the driving signal can change with temperature change and accordingly, temperature benefit can be realized
Repay effect.Even if the temperature of the OLED screen body changes, the brightness of the active matrix/organic light emitting display and color are sat
Mark will not change.
Correspondingly, the present invention also provides a kind of driving methods of active matrix/organic light emitting display.Incorporated by reference to reference
The driving method of Fig. 1 and Fig. 2, the active matrix/organic light emitting display includes:
Step 1: the temperature of detection OLED screen body, and thermal compensation signal is obtained according to temperature signal；
Step 2: providing video data code, and is data-signal by the video data code conversion；
Step 3: the thermal compensation signal and the data-signal are overlapped, to obtain driving signal；
Step 4: the OLED screen body is driven using the driving signal.
Specifically, and collected temperature signal is mentioned firstly, detect the temperature of OLED screen body by temperature-sensitive sticker 21
Supply offset generator 23.
Then, the offset generator 23 generates thermal compensation signal according to the temperature signal, and the temperature-compensating is believed
It is supplied to adder 27.
Then, video data code is provided to gamma generator 25, using the gamma generator 25 by the video counts
It is data-signal according to code conversion.
Later, the thermal compensation signal is overlapped with data-signal using adder 27, to obtain driving signal.
Finally, the driving signal drives the OLED screen body via output buffer 29.
Active matrix/organic light emitting display is driven using above-mentioned driving method, does not need control input voltage or modification view
Frequency data code, it will be able to avoid influence of the temperature change to display effect.
[embodiment two]
Referring to FIG. 3, its structural schematic diagram for the active matrix/organic light emitting display of the embodiment of the present invention two.Such as figure
Shown in 3, the active matrix/organic light emitting display includes: OLED screen body (not shown) and to drive the OLED
Shield the driving device 30 of body, the driving device 30 includes temperature compensation unit, gamma generator 35, gamma reference voltage generation
The output end of device 36 and adder 37, the gamma reference voltage generator 36 and temperature compensation unit with the adder 37
Input terminal connection, the gamma reference voltage generator 36 for providing gamma reference voltage, use by the temperature compensation unit
In the temperature change for incuding the OLED screen body and thermal compensation signal is exported, the adder 37 is used for the gamma reference voltage
It is overlapped with thermal compensation signal to obtain offset data signal, the gamma generator 35 and the output end of the adder 37 connect
It connects, for providing driving signal according to the offset data signal.
Specifically, the temperature compensation unit includes temperature-sensitive sticker 31 and offset generator 33, the temperature-sensitive sticker
31 output end is connect with the input terminal of the offset generator 33, and the temperature-sensitive sticker 31 is for detecting the OLED screen body
Temperature, and temperature signal collected is supplied to the offset generator 33.The offset generator 33 is based on external defeated
The temperature signal entered generates thermal compensation signal, and the thermal compensation signal is supplied to the adder 37.The gamma reference voltage
The gamma reference voltage is supplied to the adder 37 for providing gamma reference voltage by generator 36.The addition
The thermal compensation signal received and gamma reference voltage are overlapped by device 37, to obtain offset data signal.The gamma generates
Device 35 receives the offset data signal and externally input video data code, and according to the video data code and benefit
It repays data-signal and obtains driving signal.
With continued reference to FIG. 3, the driving device 30 further includes output buffer 39, the output buffer 39 is set to
Between the gamma generator 35 and the OLED screen body (not shown), for being cached to the driving signal, the gal
The output end of horse generator 35 is connect by the output buffer 39 with the OLED screen body, and the driving signal is via institute
It states output buffer 39 and is supplied to the OLED screen body, the OLED screen body is driven.
The present embodiment and embodiment one the difference is that, the driving device 30 further includes that gamma reference voltage generates
The Gamma reference electricity that device 36, the thermal compensation signal of the temperature compensation unit output and the gamma reference voltage generator 36 generate
Laminated adds, rather than is superimposed with the data-signal of the gamma generator 35 output.
As shown in figure 3, the adder 37 receives the gamma reference voltage that the gamma reference voltage generator 36 exports
The thermal compensation signal exported with the offset generator 33, and the gamma reference voltage and thermal compensation signal are overlapped to obtain
Offset data signal, the gamma generator 35 receive the offset data signal and externally input video data code,
And driving signal is obtained according to the video data code and offset data signal, the output buffer 39 is set to the gal
Between horse generator 35 and the OLED screen body, for caching to the driving signal, the driving signal passes through described
Buffer 39 drives the OLED screen body.
In the present embodiment, gamma reference voltage is compensated by the temperature compensation unit, and according to compensated
Gamma reference voltage (i.e. offset data signal) and externally input video data code output drive signal, due to the driving
Signal can change with temperature change and accordingly, therefore can be realized effect temperature compensation, so as to improve due to temperature change and
Caused display problem.
Correspondingly, the present invention also provides a kind of driving methods of active matrix/organic light emitting display.Incorporated by reference to reference
The driving method of Fig. 3 and Fig. 4, the active matrix/organic light emitting display includes:
Step 1: the temperature of detection OLED screen body, and thermal compensation signal is obtained according to temperature signal；
Step 2: providing gamma reference voltage, and the thermal compensation signal be overlapped with gamma reference voltage, to obtain
Offset data signal；
Step 3: video data code is provided；
Step 4: driving signal is obtained according to the offset data signal and video data code；
Step 5: the OLED screen body is driven using the driving signal.
Specifically, and collected temperature signal is mentioned firstly, detect the temperature of OLED screen body by temperature-sensitive sticker 31
Supply offset generator 33.
Then, the offset generator 33 generates thermal compensation signal according to the temperature signal, and the temperature-compensating is believed
It is supplied to adder 37.
Then, gamma reference voltage is provided to the adder 37 by gamma reference voltage generator 36.
Later, the gal generated the thermal compensation signal and the gamma reference voltage generator 36 using the adder 37
Horse reference voltage is overlapped, to obtain offset data signal.
Hereafter, video data code is provided to gamma generator 35.The gamma generator 35 receives video data code
With offset data signal, and according to the video data code and offset data signal output drive signal.
Finally, the driving signal drives the OLED screen body via output buffer 39.
To sum up, in active matrix/organic light emitting display provided by the invention and its driving method, temperature-compensating is utilized
Unit obtains the thermal compensation signal of OLED screen temperature, and the data-signal that the thermal compensation signal and gamma generator generate is carried out
Superposition, to realize effect temperature compensation, the present invention does not need control input voltage or modifies video data code, can improve
Display problem caused by changing due to screen temperature.
Foregoing description is only the description to present pre-ferred embodiments, not to any restriction of the scope of the invention, this hair
Any change, the modification that the those of ordinary skill in bright field does according to the disclosure above content, belong to the protection of claims
Range.
Claims (8)
1. a kind of active matrix/organic light emitting display characterized by comprising OLED screen body and to drive the OLED
Shield the driving device of body；The driving device includes gamma generator, temperature compensation unit and adder, the gamma generator
It is connect with the input terminal of the adder with the output end of temperature compensation unit, the gamma generator is used for video data
Code conversion is data-signal, and the temperature compensation unit is used to incude the temperature change of the OLED screen body and output voltage is mended
Signal is repaid, the adder is for being overlapped the data-signal and voltage compensation signal to obtain driving signal.
2. active matrix/organic light emitting display as described in claim 1, which is characterized in that the temperature compensation unit includes
Temperature-sensitive sticker and offset generator；The temperature-sensitive sticker is used to detect the temperature of the OLED screen body, and will be collected
Temperature signal is supplied to the offset generator；The offset generator is according to the temperature signal output voltage compensation signal.
3. active matrix/organic light emitting display as described in claim 1, which is characterized in that the driving device further includes defeated
Buffer out, the output buffer are set between the adder and the OLED screen body, for the driving signal
It is cached.
4. a kind of driving method of active matrix/organic light emitting display as claimed any one in claims 1 to 3, feature
It is, comprising:
The temperature of OLED screen body is detected, and voltage compensation signal is obtained according to temperature signal；
Video data code is provided, and is data-signal by the video data code conversion；
The voltage compensation signal and the data-signal are overlapped, to obtain driving signal；And
The OLED screen body is driven using the driving signal.
5. a kind of active matrix/organic light emitting display characterized by comprising OLED screen body and to drive the OLED
Shield the driving device of body；The driving device includes gamma generator, temperature compensation unit, gamma reference voltage generator and adds
The output end of musical instruments used in a Buddhist or Taoist mass, the gamma reference voltage generator and temperature compensation unit is connect with the input terminal of the adder,
The gamma reference voltage generator is for providing gamma reference voltage, and the temperature compensation unit is for incuding the OLED screen
The temperature change of body simultaneously exports thermal compensation signal, and the adder is for the gamma reference voltage and thermal compensation signal to be overlapped
To obtain offset data signal, the gamma generator is connect with the output end of the adder, for according to the compensation number
It is believed that number offer driving signal.
6. active matrix/organic light emitting display as claimed in claim 5, which is characterized in that the temperature compensation unit includes
Temperature-sensitive sticker and offset generator；The temperature-sensitive sticker is used to detect the temperature of the OLED screen body, and will be collected
Temperature signal is supplied to the offset generator；The offset generator exports thermal compensation signal according to the temperature signal.
7. active matrix/organic light emitting display as claimed in claim 5, which is characterized in that the driving device further includes defeated
Buffer out, the output buffer are set between the gamma generator and the OLED screen body, for the driving
Signal is cached.
8. a kind of driving method of the active matrix/organic light emitting display as described in any one of claim 5 to 7, feature
It is, comprising:
The temperature of OLED screen body is detected, and thermal compensation signal is obtained according to temperature signal；
Gamma reference voltage is provided, and the thermal compensation signal is overlapped with gamma reference voltage, to obtain offset data letter
Number；
Video data code is provided；
Driving signal is obtained according to the offset data signal and video data code；And
The OLED screen body is driven using the driving signal.
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| CN106601202B (en) * | 2016-12-14 | 2019-04-09 | 昆山龙腾光电有限公司 | Liquid crystal display device, gamma electric voltage regulating device and its adjusting method |
| CN106898289A (en) * | 2017-04-10 | 2017-06-27 | 深圳市华星光电技术有限公司 | The drive system and driving method of a kind of display screen |
| US10699647B2 (en) | 2017-04-10 | 2020-06-30 | Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd | Driving system of display screen and driving method thereof |
| CN107274836B (en) * | 2017-08-02 | 2020-03-17 | 深圳市华星光电半导体显示技术有限公司 | AMOLED display panel with temperature compensation function and display device |
| CN109975979A (en) * | 2019-04-15 | 2019-07-05 | 安徽信息工程学院 | A kind of AR glasses |
| CN110021268B (en) * | 2019-04-16 | 2020-12-11 | 京东方科技集团股份有限公司 | Display control method and device of OLED |
| CN112951156B (en) * | 2021-01-28 | 2023-02-03 | 北京京东方光电科技有限公司 | Display compensation method, display compensation device and display device |
| TWI804152B (en) * | 2022-01-11 | 2023-06-01 | 大陸商集創北方（珠海）科技有限公司 | OLED panel driving method, OLED display and information processing device |
| CN115206230B (en) * | 2022-07-29 | 2023-04-28 | 浙江传媒学院 | Driving circuit and driving control method thereof |
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