CN107068054A - A kind of drive circuit and liquid crystal display - Google Patents
A kind of drive circuit and liquid crystal display Download PDFInfo
- Publication number
- CN107068054A CN107068054A CN201710276599.5A CN201710276599A CN107068054A CN 107068054 A CN107068054 A CN 107068054A CN 201710276599 A CN201710276599 A CN 201710276599A CN 107068054 A CN107068054 A CN 107068054A
- Authority
- CN
- China
- Prior art keywords
- module
- thin film
- film transistor
- signal
- line driving
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 40
- 238000012360 testing method Methods 0.000 claims abstract description 52
- 238000012544 monitoring process Methods 0.000 claims abstract description 27
- 239000010409 thin film Substances 0.000 claims description 99
- 239000003990 capacitor Substances 0.000 claims description 35
- 230000000694 effects Effects 0.000 abstract description 14
- 238000010276 construction Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 7
- 229920001621 AMOLED Polymers 0.000 description 4
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- 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
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2310/00—Command of the display device
- G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
- G09G2310/0243—Details of the generation of driving signals
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2310/00—Command of the display device
- G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
- G09G2310/0264—Details of driving circuits
Landscapes
- 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)
Abstract
The present invention provides a kind of drive circuit and liquid crystal display, and it includes：Display module, scanning line driving module, data wire drive module, signal compensation module and test pixel unit；Test pixel unit, the data-signal that the scanning signal and data wire drive module provided for received scanline drive module is provided；Signal compensation module, the electric current of test pixel unit is flowed through for monitoring, and voltage compensation signal is generated to display module, voltage compensation signal drives display module display picture jointly with the scanning signal of scanning line driving module offer and the data-signal of data wire drive module offer.The drive circuit and liquid crystal display of the present invention improves the display effect of liquid crystal display, and simple in construction；Existing liquid crystal display is solved because long-time is used, electronic device produces the phenomenon of threshold voltage shift, so that the technical problem of the display effect of extreme influence liquid crystal display.
Description
Technical Field
The invention relates to the field of liquid crystal displays, in particular to a driving circuit and a liquid crystal display.
Background
The AMOLED active matrix organic light emitting diode panel has the advantages of low power consumption, high color gamut, high brightness, high resolution, wide viewing angle, short response time, etc., and is considered to be the most promising display device in the industry.
As shown in fig. 1, the conventional pixel driving circuit for an active matrix organic light emitting diode panel includes a sixth thin film transistor T6, a seventh thin film transistor T7, and a third capacitor C3, wherein the sixth thin film transistor T6 is a switching thin film transistor, the seventh thin film transistor T7 is a driving thin film transistor, and the third capacitor C3 is a storage capacitor. Specifically, the gate of the sixth tft T6 is connected to the scan signal, the source is connected to the data signal, and the drain is electrically connected to the gate of the seventh tft T7 and one end of the third capacitor C3; the source electrode of the seventh thin film transistor T7 is connected with a power supply voltage, and the drain electrode of the seventh thin film transistor T7 is electrically connected with the anode of the organic light emitting diode OLED; the cathode of the organic light emitting diode OLED and the other end of the third capacitor C3 are grounded.
However, as the time of use of the active matrix organic light emitting diode panel increases, the threshold voltages of the first thin film transistor and the second thin film transistor drift, which greatly affects the display effect of the liquid crystal display.
Therefore, it is necessary to provide a driving circuit and a liquid crystal display to solve the problems of the prior art.
Disclosure of Invention
The invention aims to provide a driving circuit to solve the technical problem that the display effect of a liquid crystal display is greatly influenced because threshold voltage deviation occurs in an electronic device due to long-time use of the conventional liquid crystal display.
In order to solve the above problems, the technical scheme provided by the invention is as follows:
the present invention provides a driving circuit, comprising: the display device comprises a display module, a scanning line driving module, a data line driving module, a signal compensation module and a test pixel unit;
the scanning line driving module, the data line driving module and the signal compensation module are electrically connected with the display module; the test pixel unit is arranged outside the display module and is electrically connected with the scanning line driving module and the data line driving module; wherein,
the test pixel unit is used for receiving the scanning signals provided by the scanning line driving module and the data signals provided by the data line driving module;
the signal compensation module is used for monitoring the current flowing through the test pixel unit and generating a voltage compensation signal to the display module, and the voltage compensation signal, the scanning signal provided by the scanning line driving module and the data signal provided by the data line driving module drive the display module to display the picture together.
In the driving circuit of the present invention, the signal compensation module includes: the current monitoring unit is electrically connected with the compensation IC; wherein,
the current monitoring unit is used for monitoring the current flowing through the test pixel unit and transmitting the current to the compensation IC;
and the compensation IC is used for generating the voltage compensation signal to the display module according to the received current flowing through the test pixel unit.
In the driving circuit of the present invention, the display module includes a plurality of pixel units arranged in an array, each of the pixel units including: the first thin film transistor, the second thin film transistor, the third thin film transistor and a first capacitor;
the grid electrode of the first thin film transistor is connected with a scanning signal, the source electrode of the first thin film transistor is connected with a data signal, and the drain electrode of the first thin film transistor is electrically connected with the grid electrode of the second thin film transistor and one end of the first capacitor; the source electrode of the second thin film transistor is connected with power supply voltage, and the drain electrode of the second thin film transistor is electrically connected with the drain electrode of the third thin film transistor and the anode of the organic light emitting diode; the other end of the first capacitor and the cathode of the organic light emitting diode are grounded; and the grid electrode and the source electrode of the third thin film transistor are connected to the voltage compensation signal.
In the driving circuit of the present invention, the test pixel unit includes: a fourth thin film transistor, a fifth thin film transistor and a second capacitor;
a grid electrode of the fourth thin film transistor is connected with a scanning signal, a source electrode of the fourth thin film transistor is connected with a data signal, and a drain electrode of the fourth thin film transistor is electrically connected with a grid electrode of the fifth thin film transistor and one end of the second capacitor; the source electrode of the fifth thin film transistor is connected with power supply voltage, and the drain electrode of the fifth thin film transistor is electrically connected with the anode of the organic light emitting diode; the other end of the second capacitor and the cathode of the organic light emitting diode are grounded.
The drive circuit of the present invention further includes: the device comprises a signal interface module, a power supply module, a reference voltage generation module and a time sequence control module;
the signal interface module is electrically connected with the power supply module and the time sequence control module;
the power supply module is electrically connected with the reference voltage generation module, the timing control module, the scanning line driving module, the data line driving module and the signal compensation module;
the reference voltage generation module is electrically connected with the data line driving module;
the time sequence control module is electrically connected with the scanning line driving module and the data line driving module;
the power supply module is used for providing power supply voltage for the display module.
According to the above object of the present invention, there is also provided a liquid crystal display including a driving circuit including: the display device comprises a display module, a scanning line driving module, a data line driving module, a signal compensation module and a test pixel unit;
the scanning line driving module, the data line driving module and the signal compensation module are electrically connected with the display module; the test pixel unit is arranged outside the display module and is electrically connected with the scanning line driving module and the data line driving module; wherein,
the test pixel unit is used for receiving the scanning signals provided by the scanning line driving module and the data signals provided by the data line driving module;
the signal compensation module is used for monitoring the current flowing through the test pixel unit and generating a voltage compensation signal to the display module, and the voltage compensation signal, the scanning signal provided by the scanning line driving module and the data signal provided by the data line driving module drive the display module to display the picture together.
In the liquid crystal display of the present invention, the signal compensation module includes: the current monitoring unit is electrically connected with the compensation IC; wherein,
the current monitoring unit is used for monitoring the current flowing through the test pixel unit and transmitting the current to the compensation IC;
and the compensation IC is used for generating the voltage compensation signal to the display module according to the received current flowing through the test pixel unit.
In the liquid crystal display of the present invention, the display module includes a plurality of pixel units arranged in an array, each pixel unit including: the first thin film transistor, the second thin film transistor, the third thin film transistor and a first capacitor;
the grid electrode of the first thin film transistor is connected with a scanning signal, the source electrode of the first thin film transistor is connected with a data signal, and the drain electrode of the first thin film transistor is electrically connected with the grid electrode of the second thin film transistor and one end of the first capacitor; the source electrode of the second thin film transistor is connected with power supply voltage, and the drain electrode of the second thin film transistor is electrically connected with the drain electrode of the third thin film transistor and the anode of the organic light emitting diode; the other end of the first capacitor and the cathode of the organic light emitting diode are grounded; and the grid electrode and the source electrode of the third thin film transistor are connected to the voltage compensation signal.
In the liquid crystal display of the present invention, the test pixel unit includes: a fourth thin film transistor, a fifth thin film transistor and a second capacitor;
a grid electrode of the fourth thin film transistor is connected with a scanning signal, a source electrode of the fourth thin film transistor is connected with a data signal, and a drain electrode of the fourth thin film transistor is electrically connected with a grid electrode of the fifth thin film transistor and one end of the second capacitor; the source electrode of the fifth thin film transistor is connected with power supply voltage, and the drain electrode of the fifth thin film transistor is electrically connected with the anode of the organic light emitting diode; the other end of the second capacitor and the cathode of the organic light emitting diode are grounded.
The liquid crystal display of the present invention further comprises: the device comprises a signal interface module, a power supply module, a reference voltage generation module and a time sequence control module;
the signal interface module is electrically connected with the power supply module and the time sequence control module;
the power supply module is electrically connected with the reference voltage generation module, the timing control module, the scanning line driving module, the data line driving module and the signal compensation module;
the reference voltage generation module is electrically connected with the data line driving module;
the time sequence control module is electrically connected with the scanning line driving module and the data line driving module;
the power supply module is used for providing power supply voltage for the display module.
The driving circuit and the liquid crystal display monitor the current flowing through the testing pixel unit and generate the voltage compensation signal to the display module by arranging the testing pixel unit, the current monitoring unit and the compensation IC, thereby improving the display effect of the liquid crystal display and having simple structure; the technical problem that the display effect of the liquid crystal display is greatly influenced due to the fact that threshold voltage deviation is generated by an electronic device when the existing liquid crystal display is used for a long time is solved.
In order to make the aforementioned and other objects of the present invention more comprehensible, preferred embodiments accompanied with figures are described in detail below:
drawings
The technical solution and other advantages of the present invention will become apparent from the following detailed description of specific embodiments of the present invention, which is to be read in connection with the accompanying drawings.
FIG. 1 is a schematic diagram of a pixel unit of a display module of a conventional driving circuit;
FIG. 2 is a schematic diagram of a preferred embodiment of the driving circuit of the present invention;
FIG. 3 is a schematic structural diagram of a pixel unit of a display module according to a preferred embodiment of the driving circuit of the present invention;
FIG. 4 is a schematic structural diagram of a test pixel unit according to a preferred embodiment of the driving circuit of the present invention.
Detailed Description
To further illustrate the technical means and effects of the present invention, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.
Referring to fig. 2, fig. 2 is a schematic structural diagram of a preferred embodiment of the driving circuit of the present invention;
the present preferred embodiment provides a drive circuit, which includes: a display module 101, a scan line driving module 102, a data line driving module 103, a signal compensation module 104, and a test pixel unit 105;
the scan line driving module 102, the data line driving module 103, and the signal compensation module 104 are electrically connected to the display module 101; the test pixel unit 105 is disposed outside the display module 101, and electrically connected to the scan line driving module 102 and the data line driving module 103; wherein,
the test pixel unit 105 is configured to receive the scan signal provided by the scan line driving module 102 and the data signal provided by the data line driving module 103, and it should be noted that the scan signal and the data signal provided to the test pixel unit 105 may be set with reference to any pixel on the display module 101;
the signal compensation module 104 is configured to monitor a current flowing through the test pixel unit 105 and generate a voltage compensation signal to the display module 101, where the voltage compensation signal, the scan signal provided by the scan line driving module 102 and the data signal provided by the data line driving module 103 drive the display module 101 to display a picture.
In the driving circuit of the preferred embodiment, the signal compensation module 104 includes: a compensation IC1042 and a current monitoring unit 1041 electrically connected to the compensation IC 1042; the current monitoring unit 1041 is configured to monitor a current flowing through the test pixel unit 105, and transmit the current to the compensation IC 1042; the compensation IC1042 is configured to generate the voltage compensation signal to the display module 101 according to the received current flowing through the test pixel unit 105.
In the driving circuit of the preferred embodiment, a current monitoring unit 1041 continuously monitors the current flowing through the testing pixel unit 105, and then the current is transmitted to the compensation IC1042, and the compensation IC1042 generates a voltage compensation signal to the display module 101 according to the received current flowing through the testing pixel unit 105, so that the problem of poor display effect caused by the device threshold shift on the pixel unit on the display module 101 is solved, and the monitoring by the current monitoring unit 1041 is more direct and simple.
The driving circuit of the preferred embodiment further includes: a signal interface module 106, a power supply module 107, a reference voltage generation module 108 and a timing control module 109;
the signal interface module 106 is electrically connected to the power module 107 and the timing control module 109; the power module 107 is electrically connected to the reference voltage generating module 108, the timing control module 109, the scan line driving module 102, the data line driving module 103, and the signal compensating module 104; the reference voltage generation module 108 is electrically connected to the data line driving module 103; the timing control module 109 is electrically connected to the scan line driving module 102 and the data line driving module 103.
Specifically, the signal interface module 106 distributes a power signal to a power module, distributes a display signal in an LVDS mode to the timing control module 109, and the timing control module 109 processes the signal, transmits the display signal in the Mini-LVDS mode that can be recognized by the data line driving module to the data line driving module 103, and transmits a clock signal and a control signal that can be recognized by the scan line driving module 102 to the scan line driving module 102; the power supply module 107 is used for supplying a power supply voltage to the display module 101.
Referring to fig. 2 and 3, fig. 3 is a schematic structural diagram of a pixel unit of a display module according to a preferred embodiment of the driving circuit of the present invention;
in the driving circuit of the preferred embodiment, the display module 101 includes a plurality of pixel units arranged in an array, and each pixel unit includes: a first thin film transistor T1, a second thin film transistor T2, a third thin film transistor T3, and a first capacitor C1;
a gate of the first thin film transistor T1 is connected to a scan signal, a source is connected to a data signal, and a drain is electrically connected to a gate of the second thin film transistor T2 and one end of the first capacitor C1; the source electrode of the second thin film transistor T2 is connected to a power voltage, and the drain electrode is electrically connected to the drain electrode of the third thin film transistor T3 and the anode electrode of the organic light emitting diode OLED; the other end of the first capacitor C1 and the cathode of the organic light emitting diode OLED are grounded; the gate and source of the third thin film transistor T3 are connected to the voltage compensation signal.
Referring to fig. 2 and 4, fig. 4 is a schematic structural diagram of a test pixel unit of a preferred embodiment of the driving circuit of the present invention;
in the driving circuit of the present preferred embodiment, the test pixel unit 105 includes: a fourth thin film transistor T4, a fifth thin film transistor T5, and a second capacitor C2;
a gate of the fourth thin film transistor T4 is connected to a scan signal, a source thereof is connected to a data signal, and a drain thereof is electrically connected to a gate of the fifth thin film transistor T5 and one end of the second capacitor C2; the source electrode of the fifth thin film transistor T5 is connected with a power supply voltage, and the drain electrode is electrically connected with the anode of the organic light emitting diode OLED; the other end of the second capacitor C2 and the cathode of the organic light emitting diode OLED are grounded. The current flowing through the test pixel unit 105 is monitored by the current monitoring unit 1041, and is transmitted to the compensation IC1042 to generate a voltage compensation signal to the display module.
The driving circuit of the preferred embodiment monitors the current flowing through the test pixel unit 105 by setting the test pixel unit 105, the current monitoring unit 1041 and the compensation IC1042, and generates the voltage compensation signal to the display module 101, so that the display effect of the liquid crystal display is improved, and the structure is simple; the technical problem that the display effect of the liquid crystal display is greatly influenced due to the fact that threshold voltage deviation is generated by an electronic device when the existing liquid crystal display is used for a long time is solved.
The present invention also provides a liquid crystal display, which includes the driving circuit in the above preferred embodiment, and details are not repeated herein, and reference may be made to the description of the above preferred embodiment.
The liquid crystal display of the preferred embodiment monitors the current flowing through the test pixel unit by arranging the test pixel unit, the current monitoring unit 1 and the compensation IC, and generates a voltage compensation signal to the display module, so that the display effect of the liquid crystal display is improved, and the structure is simple; the technical problem that the display effect of the liquid crystal display is greatly influenced due to the fact that threshold voltage deviation is generated by an electronic device when the existing liquid crystal display is used for a long time is solved.
The driving circuit and the liquid crystal display monitor the current flowing through the testing pixel unit and generate the voltage compensation signal to the display module by arranging the testing pixel unit, the current monitoring unit and the compensation IC, thereby improving the display effect of the liquid crystal display and having simple structure; the technical problem that the display effect of the liquid crystal display is greatly influenced due to the fact that threshold voltage deviation is generated by an electronic device when the existing liquid crystal display is used for a long time is solved.
In summary, although the present invention has been described with reference to the preferred embodiments, the above-described preferred embodiments are not intended to limit the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, therefore, the scope of the present invention shall be determined by the appended claims.
Claims (10)
1. A driving circuit for a liquid crystal display, comprising: the display device comprises a display module, a scanning line driving module, a data line driving module, a signal compensation module and a test pixel unit;
the scanning line driving module, the data line driving module and the signal compensation module are electrically connected with the display module; the test pixel unit is arranged outside the display module and is electrically connected with the scanning line driving module and the data line driving module; wherein,
the test pixel unit is used for receiving the scanning signals provided by the scanning line driving module and the data signals provided by the data line driving module;
the signal compensation module is used for monitoring the current flowing through the test pixel unit and generating a voltage compensation signal to the display module, and the voltage compensation signal, the scanning signal provided by the scanning line driving module and the data signal provided by the data line driving module drive the display module to display the picture together.
2. The driving circuit of claim 1, wherein the signal compensation module comprises: the current monitoring unit is electrically connected with the compensation IC; wherein,
the current monitoring unit is used for monitoring the current flowing through the test pixel unit and transmitting the current to the compensation IC;
and the compensation IC is used for generating the voltage compensation signal to the display module according to the received current flowing through the test pixel unit.
3. The driving circuit of claim 1, wherein the display module comprises a plurality of pixel units arranged in an array, each pixel unit comprising: the first thin film transistor, the second thin film transistor, the third thin film transistor and a first capacitor;
the grid electrode of the first thin film transistor is connected with a scanning signal, the source electrode of the first thin film transistor is connected with a data signal, and the drain electrode of the first thin film transistor is electrically connected with the grid electrode of the second thin film transistor and one end of the first capacitor; the source electrode of the second thin film transistor is connected with power supply voltage, and the drain electrode of the second thin film transistor is electrically connected with the drain electrode of the third thin film transistor and the anode of the organic light emitting diode; the other end of the first capacitor and the cathode of the organic light emitting diode are grounded; and the grid electrode and the source electrode of the third thin film transistor are connected to the voltage compensation signal.
4. The driving circuit of claim 1, wherein the test pixel cell comprises: a fourth thin film transistor, a fifth thin film transistor and a second capacitor;
a grid electrode of the fourth thin film transistor is connected with a scanning signal, a source electrode of the fourth thin film transistor is connected with a data signal, and a drain electrode of the fourth thin film transistor is electrically connected with a grid electrode of the fifth thin film transistor and one end of the second capacitor; the source electrode of the fifth thin film transistor is connected with power supply voltage, and the drain electrode of the fifth thin film transistor is electrically connected with the anode of the organic light emitting diode; the other end of the second capacitor and the cathode of the organic light emitting diode are grounded.
5. The driving circuit according to claim 1, further comprising: the device comprises a signal interface module, a power supply module, a reference voltage generation module and a time sequence control module;
the signal interface module is electrically connected with the power supply module and the time sequence control module;
the power supply module is electrically connected with the reference voltage generation module, the timing control module, the scanning line driving module, the data line driving module and the signal compensation module;
the reference voltage generation module is electrically connected with the data line driving module;
the time sequence control module is electrically connected with the scanning line driving module and the data line driving module;
the power supply module is used for providing power supply voltage for the display module.
6. A liquid crystal display comprising a driving circuit comprising: the display device comprises a display module, a scanning line driving module, a data line driving module, a signal compensation module and a test pixel unit;
the scanning line driving module, the data line driving module and the signal compensation module are electrically connected with the display module; the test pixel unit is arranged outside the display module and is electrically connected with the scanning line driving module and the data line driving module; wherein,
the test pixel unit is used for receiving the scanning signals provided by the scanning line driving module and the data signals provided by the data line driving module;
the signal compensation module is used for monitoring the current flowing through the test pixel unit and generating a voltage compensation signal to the display module, and the voltage compensation signal, the scanning signal provided by the scanning line driving module and the data signal provided by the data line driving module drive the display module to display the picture together.
7. The liquid crystal display of claim 6, wherein the signal compensation module comprises: the current monitoring unit is electrically connected with the compensation IC; wherein,
the current monitoring unit is used for monitoring the current flowing through the test pixel unit and transmitting the current to the compensation IC;
and the compensation IC is used for generating the voltage compensation signal to the display module according to the received current flowing through the test pixel unit.
8. The liquid crystal display of claim 6, wherein the display module comprises a plurality of pixel units arranged in an array, each pixel unit comprising: the first thin film transistor, the second thin film transistor, the third thin film transistor and a first capacitor;
the grid electrode of the first thin film transistor is connected with a scanning signal, the source electrode of the first thin film transistor is connected with a data signal, and the drain electrode of the first thin film transistor is electrically connected with the grid electrode of the second thin film transistor and one end of the first capacitor; the source electrode of the second thin film transistor is connected with power supply voltage, and the drain electrode of the second thin film transistor is electrically connected with the drain electrode of the third thin film transistor and the anode of the organic light emitting diode; the other end of the first capacitor and the cathode of the organic light emitting diode are grounded; and the grid electrode and the source electrode of the third thin film transistor are connected to the voltage compensation signal.
9. The liquid crystal display of claim 6, wherein the test pixel cell comprises: a fourth thin film transistor, a fifth thin film transistor and a second capacitor;
a grid electrode of the fourth thin film transistor is connected with a scanning signal, a source electrode of the fourth thin film transistor is connected with a data signal, and a drain electrode of the fourth thin film transistor is electrically connected with a grid electrode of the fifth thin film transistor and one end of the second capacitor; the source electrode of the fifth thin film transistor is connected with power supply voltage, and the drain electrode of the fifth thin film transistor is electrically connected with the anode of the organic light emitting diode; the other end of the second capacitor and the cathode of the organic light emitting diode are grounded.
10. The liquid crystal display of claim 6, further comprising: the device comprises a signal interface module, a power supply module, a reference voltage generation module and a time sequence control module;
the signal interface module is electrically connected with the power supply module and the time sequence control module;
the power supply module is electrically connected with the reference voltage generation module, the timing control module, the scanning line driving module, the data line driving module and the signal compensation module;
the reference voltage generation module is electrically connected with the data line driving module;
the time sequence control module is electrically connected with the scanning line driving module and the data line driving module;
the power supply module is used for providing power supply voltage for the display module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710276599.5A CN107068054A (en) | 2017-04-25 | 2017-04-25 | A kind of drive circuit and liquid crystal display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710276599.5A CN107068054A (en) | 2017-04-25 | 2017-04-25 | A kind of drive circuit and liquid crystal display |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107068054A true CN107068054A (en) | 2017-08-18 |
Family
ID=59603626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710276599.5A Pending CN107068054A (en) | 2017-04-25 | 2017-04-25 | A kind of drive circuit and liquid crystal display |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107068054A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110570820A (en) * | 2019-08-06 | 2019-12-13 | 深圳市华星光电技术有限公司 | AMOLED display device and driving method thereof |
| CN111627400A (en) * | 2020-07-17 | 2020-09-04 | 深圳市Tcl高新技术开发有限公司 | Light source driving circuit, lamp panel, light source driving device and display device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103165079A (en) * | 2011-12-12 | 2013-06-19 | 乐金显示有限公司 | Organic light emitting display device and operation method thereof |
| CN103268756A (en) * | 2013-05-29 | 2013-08-28 | 上海中科高等研究院 | AMOLED voltage external compensation method and system |
| CN105047137A (en) * | 2015-09-09 | 2015-11-11 | 深圳市华星光电技术有限公司 | AMOLED real-time compensation system |
| CN105243994A (en) * | 2015-11-11 | 2016-01-13 | 深圳市华星光电技术有限公司 | AMOLED drive system and drive method |
| CN105957473A (en) * | 2016-06-30 | 2016-09-21 | 上海天马有机发光显示技术有限公司 | Organic light-emitting display panel and driving method thereof |
| CN106128359A (en) * | 2016-09-06 | 2016-11-16 | 昆山国显光电有限公司 | OLED display device and luminance compensation method thereof |
-
2017
- 2017-04-25 CN CN201710276599.5A patent/CN107068054A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103165079A (en) * | 2011-12-12 | 2013-06-19 | 乐金显示有限公司 | Organic light emitting display device and operation method thereof |
| CN103268756A (en) * | 2013-05-29 | 2013-08-28 | 上海中科高等研究院 | AMOLED voltage external compensation method and system |
| CN105047137A (en) * | 2015-09-09 | 2015-11-11 | 深圳市华星光电技术有限公司 | AMOLED real-time compensation system |
| CN105243994A (en) * | 2015-11-11 | 2016-01-13 | 深圳市华星光电技术有限公司 | AMOLED drive system and drive method |
| CN105957473A (en) * | 2016-06-30 | 2016-09-21 | 上海天马有机发光显示技术有限公司 | Organic light-emitting display panel and driving method thereof |
| CN106128359A (en) * | 2016-09-06 | 2016-11-16 | 昆山国显光电有限公司 | OLED display device and luminance compensation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110570820A (en) * | 2019-08-06 | 2019-12-13 | 深圳市华星光电技术有限公司 | AMOLED display device and driving method thereof |
| CN111627400A (en) * | 2020-07-17 | 2020-09-04 | 深圳市Tcl高新技术开发有限公司 | Light source driving circuit, lamp panel, light source driving device and display device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11373582B2 (en) | Pixel circuit and driving method thereof, display panel | |
| US10078979B2 (en) | Display panel with pixel circuit having a plurality of light-emitting elements and driving method thereof | |
| CN102222465B (en) | Organic light emitting display device with threshold voltage compensation mechanism and driving method thereof | |
| CN106531067B (en) | A kind of pixel circuit and its display device | |
| CN112992070B (en) | Pixel circuit, driving method thereof, display panel and display device | |
| US10600353B2 (en) | Method for driving a pixel circuit, display panel and display device | |
| EP3159879B1 (en) | Pixel circuit and display device | |
| CN105448244A (en) | Pixel compensation circuit and AMOLED display apparatus | |
| CN112233621B (en) | Pixel driving circuit, display panel and electronic equipment | |
| CN105427809A (en) | Pixel compensation circuit and AMOLED display apparatus | |
| CN103500556A (en) | Pixel circuit, pixel circuit driving method and thin film transistor backplane | |
| CN104269139A (en) | Pixel structure and driving method thereof | |
| KR20170042721A (en) | Amoled drive apparatus and drive dethod | |
| US11967288B2 (en) | Backlight driving circuit and liquid crystal display device | |
| TWI463463B (en) | Organic light emitting diode display and operating method thereof | |
| CN102280085B (en) | Pixel drive circuit and method and light-emitting display device | |
| CN108417178A (en) | Array substrate, its driving method, electroluminescence display panel and display device | |
| CN114220389A (en) | Pixel driving circuit and driving method thereof, display panel and device | |
| US11798484B1 (en) | Display panel, display module, and display device | |
| CN102376284B (en) | Electro-optical device and electronic equipment | |
| US20210358401A1 (en) | Pixel unit and display panel | |
| WO2018120125A1 (en) | Driving device and driving method for liquid crystal panel | |
| CN107068054A (en) | A kind of drive circuit and liquid crystal display | |
| US11942035B2 (en) | Display panel, method for driving display panel, and display device | |
| US10643541B2 (en) | Driving circuit of display panel, display panel and display device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170818 |
|
| RJ01 | Rejection of invention patent application after publication |