CN107045855A - A kind of AMOLED drive circuits and its display device - Google Patents
A kind of AMOLED drive circuits and its display device Download PDFInfo
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- CN107045855A CN107045855A CN201710220912.3A CN201710220912A CN107045855A CN 107045855 A CN107045855 A CN 107045855A CN 201710220912 A CN201710220912 A CN 201710220912A CN 107045855 A CN107045855 A CN 107045855A
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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]
- G09G3/3225—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] using an active matrix
- G09G3/3233—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] using an active matrix with pixel circuitry controlling the current through the light-emitting element
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Control Of El Displays (AREA)
Abstract
The present invention relates to a kind of AMOLED drive circuits and its display device, display unit includes the multiple effective illuminating parts being arranged in AMOLED display panel effective display area domains, it is connected with the first voltage end of control unit and voltage supply unit, for carrying out luminescence display under the control of control module；Temperature detecting unit is connected with control unit, for the environment temperature in the acquisition testing drive circuit preset range；Control unit is used to the detection signal that gathers according to temperature detecting unit and sends driver element to voltage supply unit sending the first drive signal, with the display brightness of control display unit；Driver element is connected with the second voltage end of control unit, voltage supply unit, is also connected by a plurality of power supply lead wire with display unit, for driving the display unit.AMOLED drive circuits proposed by the present invention and its display device, effective display area domain is shown uniformly, improves display quality.
Description
Technical field
The present invention relates to a kind of display technology field, more particularly to a kind of AMOLED drive circuits and its display device.
Background technology
Flat display apparatus has many merits such as thin fuselage, power saving, radiationless, is widely used, and organic
Light emitting display device（Organic Light Emitting Display, OLED）It is then one of its main representative.
Organic LED display device due to being provided simultaneously with self-luminous, be not required to backlight, contrast height, thickness of thin,
Visual angle is wide, reaction speed is fast, available for flexibility panel, temperature in use scope wide, construction and the excellent spy such as processing procedure is simpler
Property, it is described as " dreamlike display ", has obtained the favor of major display producers, it has also become the third generation in display technology field
The main force of display device.
OLED according to type of drive can be divided into passive matrix OLED (Passive Matrix OLED, PMOLED) and
Active array type OLED (Active Matrix OLED, AMOLED) two major classes, i.e. direct addressins and thin film transistor (TFT) (Thin
Film Transistor, TFT) two class of matrix addressing.Wherein, PMOLED power consumption is higher, hinders it and shows dress in large scale
Application in putting, so PMOLED is typically used as the display device of small size.And AMOLED is typically used as because of its high luminous efficacy
The large scale display device of fine definition.
AMOLED display device belongs to electric current driving, and because organic light emitting diode D life-span is unstable, its characteristic can be with
Time and temperature change so that changed by organic light emitting diode D electric current, cause luminosity to become
Change, and the situation of each pixel change is different, so that the problems such as causing to show inequality.In addition, its display unit and voltage supply
Monoblock type is connected when many between unit, and the voltage drop between voltage supply unit and each effective display unit differs larger, is shown
Show uneven.Above mentioned problem urgent need to resolve.
The content of the invention
The present invention is exactly in view of the deficienciess of the prior art, there is provided a kind of AMOLED drive circuits and its display dress
Put.
To solve the above problems, the technical solution used in the present invention is as follows：
A kind of AMOLED drive circuits, including：Display unit, temperature detecting unit, control unit, voltage supply unit and driving
Unit；
Display unit, including the multiple effective illuminating parts being arranged in AMOLED display panel effective display area domains, it is single with control
The first voltage end of member and voltage supply unit is connected, for carrying out luminescence display under the control of control module；
Temperature detecting unit, is connected with control unit, for the environment temperature in the acquisition testing drive circuit preset range；
Control unit, the detection signal for being gathered according to temperature detecting unit sends driver element to voltage supply unit and sent
First drive signal, with the display brightness of control display unit；
Driver element, is connected with the second voltage end of control unit, voltage supply unit, also passes through a plurality of power supply lead wire and display
Unit is connected, for driving the display unit.
Preferably, the drive circuit also includes voltage acquisition unit, the voltage acquisition unit and control unit, display
Unit and the connection of voltage supply unit；The voltage acquisition unit is used to gather the first electricity that driver element is inputted to display unit
Pressure value, and for gathering the second voltage value of driver element output；Described control unit can be by the first voltage value and second
Difference is compared with predetermined pressure difference value between magnitude of voltage, and sends the second drive signal to driver element according to comparative result,
With the display brightness of control display unit.
Preferably, the scheduled voltage is more than 0V and less than or equal to 0.2V.
Preferably, in addition to brightness detection unit, it is connected with control unit, the display brightness for gathering display unit；
The luminance signal that described control unit can be gathered according to brightness detection unit sends the 3rd drive signal to driver element, to control
The display brightness of display unit.
The present invention also proposes a kind of AMOLED drive circuits including described in any one of claim 1-4 claim.
Compared with prior art, implementation result of the invention is as follows by the present invention：
A kind of AMOLED drive circuits of the present invention and its display device, by a plurality of between display unit and driver element
Power supply lead wire is connected, it is to avoid because power supply lead wire global design causes the voltage drop difference between driver element unit and display unit
The problem of being worth larger so that effective display area domain is shown uniformly, improves display quality；Temperature detecting unit can gather the driving
Environment in circuit preset range, environment temperature and its default normal temperature that control unit is gathered according to temperature detecting unit
It is compared, and the first drive signal is sent to driver element according to comparative result, driver element is believed according to the described first driving
Number control the size of current inputted to display unit, it is to avoid temperature change causes display unit electric current to change, and causes bright
Degree change, the problem of display caused is uneven further ensures display device viewing area and shown uniformly, improve display
Quality.
Brief description of the drawings
Fig. 1 is a kind of AMOLED drive circuit schematic diagrams of the present invention.
Embodiment
Illustrate present disclosure below in conjunction with specific embodiments.
It is a kind of AMOLED drive circuits of the present invention as shown in Figure 1, including：Display unit, temperature detecting unit, control
Unit processed, voltage supply unit and driver element；
Display unit, including the multiple effective illuminating parts being arranged in AMOLED display panel effective display area domains, it is single with control
The first voltage end of member and voltage supply unit is connected, for carrying out luminescence display under the control of control module；
Temperature detecting unit, is connected with control unit, for the environment temperature in the acquisition testing drive circuit preset range；
Control unit, the detection signal for being gathered according to temperature detecting unit sends driver element to voltage supply unit and sent
First drive signal, with the display brightness of control display unit；
Driver element, is connected with the second voltage end of control unit, voltage supply unit, also passes through a plurality of power supply lead wire and display
Unit is connected, for driving the display unit.
In such scheme, connected between display unit and driver element by a plurality of power supply lead wire, it is to avoid because power supply draws
Line global design causes the problem of voltage drop difference between driver element and display unit is larger so that effective display area domain shows
Show uniform, improve display quality.
In addition, temperature detecting unit can gather the environment in the drive circuit preset range, control unit is examined according to temperature
The environment temperature for surveying unit collection is compared with its default normal temperature, and sends the to driver element according to comparative result
One drive signal, the size of current that driver element controls to input to display unit according to first drive signal, it is to avoid temperature
Degree change causes display unit electric current to change, and causes brightness to change, the problem of display caused is uneven is further ensured that
Display device viewing area is shown uniformly, improves display quality.
Change over time, the output voltage of driver element and to the actual reception of display unit voltage and have one
Fixed difference, if difference is larger, is less than default display brightness, so as to influence to show by the actual displayed brightness for causing display unit
Show quality.In the embodiment having in the embodiment having, the drive circuit also includes voltage acquisition unit, single with control
Member, display unit and the connection of voltage supply unit；Described control unit is preset with predetermined pressure difference value, and the voltage acquisition unit is used
The first voltage value inputted in collection driver element to display unit, and for gathering the second voltage value of driver element output；
Difference between the first voltage value and second voltage value can be compared by described control unit with predetermined pressure difference value, and according to
Comparative result sends the second drive signal to driver element, with the display brightness of control display unit, so as to ensure display unit
The stability of brightness.
Above-mentioned scheduled voltage is more than 0V and less than or equal to 0.2V, the actual displayed brightness of display unit and predetermined luminance
Difference is minimum.
When ambient brightness changes, such as too dark brightness or it is excessively bright when, if display unit is also entered by preset mode
Row work, will influence display quality, or even certain loss is caused to human eye.Therefore, in the embodiment having, of the invention is aobvious
Show that circuit also includes brightness detection unit, the detection unit is connected with control unit, and the display for gathering display unit is bright
Degree；The luminance signal that described control unit can be gathered according to brightness detection unit sends the 3rd drive signal to driver element, with
The display brightness of control display unit.
In the embodiment having, the present invention also proposes a kind of including described in any one of claim 1-4 claim
AMOLED drive circuits.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
Any modifications, equivalent substitutions and improvements made within refreshing and principle etc., should be included in the scope of the protection.
Claims (5)
1. a kind of AMOLED drive circuits, it is characterised in that including：Display unit, temperature detecting unit, control unit, voltage
Feeding unit and driver element；
Display unit, including the multiple effective illuminating parts being arranged in AMOLED display panel effective display area domains, it is single with control
The first voltage end of member and voltage supply unit is connected, for carrying out luminescence display under the control of control module；
Temperature detecting unit, is connected with control unit, for the environment temperature in the acquisition testing drive circuit preset range；
Control unit, the detection signal for being gathered according to temperature detecting unit sends driver element to voltage supply unit and sent
First drive signal, with the display brightness of control display unit；
Driver element, is connected with the second voltage end of control unit, voltage supply unit, also passes through a plurality of power supply lead wire and display
Unit is connected, for driving the display unit.
2. AMOLED drive circuits according to claim 1, it is characterised in that also including voltage acquisition unit, with control
Unit, display unit and the connection of voltage supply unit；The voltage acquisition unit is defeated to display unit for gathering driver element
The first voltage value entered, and for gathering the second voltage value of driver element output；Described control unit can be by the described first electricity
Difference is compared with predetermined pressure difference value between pressure value and second voltage value, and sends second to driver element according to comparative result
Drive signal, with the display brightness of control display unit.
3. AMOLED drive circuits according to claim 2, it is characterised in that the scheduled voltage is more than 0V and is less than
Or equal to 0.2V.
4. AMOLED drive circuits according to claim 1, it is characterised in that also including brightness detection unit, with control
Unit, the display brightness for gathering display unit；The luminance signal that described control unit can be gathered according to brightness detection unit
The 3rd drive signal is sent to driver element, with the display brightness of control display unit.
5. a kind of display device, including the AMOLED drive circuits described in claim any one of 1-4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710220912.3A CN107045855A (en) | 2017-04-06 | 2017-04-06 | A kind of AMOLED drive circuits and its display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710220912.3A CN107045855A (en) | 2017-04-06 | 2017-04-06 | A kind of AMOLED drive circuits and its display device |
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| Publication Number | Publication Date |
|---|---|
| CN107045855A true CN107045855A (en) | 2017-08-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710220912.3A Pending CN107045855A (en) | 2017-04-06 | 2017-04-06 | A kind of AMOLED drive circuits and its display device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112133252A (en) * | 2020-11-03 | 2020-12-25 | 安徽熙泰智能科技有限公司 | Temperature compensation method and system for display brightness |
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| CN103927989A (en) * | 2014-04-21 | 2014-07-16 | 中国电子科技集团公司第五十五研究所 | Passive organic light emitting diode (OLED) display device with wide-temperature brightness compensation function and brightness compensation method |
| CN104885145A (en) * | 2012-12-11 | 2015-09-02 | 伊格尼斯创新公司 | Pixel circuits for amoled displays |
| US20150255019A1 (en) * | 2014-03-05 | 2015-09-10 | Samsung Display Co., Ltd. | Display device and method for driving the same |
| CN105788515A (en) * | 2014-12-23 | 2016-07-20 | 昆山国显光电有限公司 | Organic light-emitting display, brightness compensation system thereof and compensation method thereof |
| CN106356024A (en) * | 2016-10-28 | 2017-01-25 | 昆山国显光电有限公司 | OLED screen body temperature monitoring, regulating and controlling circuit, and system and OLED display panel |
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2017
- 2017-04-06 CN CN201710220912.3A patent/CN107045855A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104885145A (en) * | 2012-12-11 | 2015-09-02 | 伊格尼斯创新公司 | Pixel circuits for amoled displays |
| US20150255019A1 (en) * | 2014-03-05 | 2015-09-10 | Samsung Display Co., Ltd. | Display device and method for driving the same |
| CN103927989A (en) * | 2014-04-21 | 2014-07-16 | 中国电子科技集团公司第五十五研究所 | Passive organic light emitting diode (OLED) display device with wide-temperature brightness compensation function and brightness compensation method |
| CN105788515A (en) * | 2014-12-23 | 2016-07-20 | 昆山国显光电有限公司 | Organic light-emitting display, brightness compensation system thereof and compensation method thereof |
| CN106356024A (en) * | 2016-10-28 | 2017-01-25 | 昆山国显光电有限公司 | OLED screen body temperature monitoring, regulating and controlling circuit, and system and OLED display panel |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112133252A (en) * | 2020-11-03 | 2020-12-25 | 安徽熙泰智能科技有限公司 | Temperature compensation method and system for display brightness |
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Application publication date: 20170815 |
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| RJ01 | Rejection of invention patent application after publication |