CN104700811A - Driving control circuit and over-current protection method of GOA circuit thereof - Google Patents
Driving control circuit and over-current protection method of GOA circuit thereof Download PDFInfo
- Publication number
- CN104700811A CN104700811A CN201510139976.1A CN201510139976A CN104700811A CN 104700811 A CN104700811 A CN 104700811A CN 201510139976 A CN201510139976 A CN 201510139976A CN 104700811 A CN104700811 A CN 104700811A
- Authority
- CN
- China
- Prior art keywords
- circuit
- current
- signal
- goa circuit
- goa
- 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
- 238000000034 method Methods 0.000 title claims abstract description 33
- 239000000758 substrate Substances 0.000 claims description 12
- 239000004973 liquid crystal related substance Substances 0.000 claims description 7
- 230000007246 mechanism Effects 0.000 abstract description 8
- 230000003111 delayed effect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 6
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Landscapes
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The invention provides a driving control circuit and an over-current protection method of a GOA circuit thereof. The method comprises the steps of isolating or closing the GOA circuit; receiving at least one current signal from a control panel; comparing the current signal with a preset short circuit current threshold value; selecting the operation mode of the GOA circuit according to the comparison result; if the current signal is less than the short circuit current threshold, opening the GOA circuit to enter a normal working mode; if the current signal is more than or equal to the short circuit current threshold, keeping the GOA circuit closed to enter an over-current protecting mode. Compared with the prior art, the method has the advantages that the GOA circuit can be delayed to open or close, so that the short circuit protection mechanism can independently determine whether each current signal of the control plate exceeds the short circuit current threshold, the mistaken touch protection action caused by different current due to different plane display mode/ three-dimensional display mode and different temperature can be avoided, and as a result, the operation reliability of the GOA circuit can be improved.
Description
Technical Field
The present invention relates to a liquid crystal display device, and more particularly, to a driving control circuit of a liquid crystal display device and an over-current protection method for a GOA circuit of the liquid crystal display device.
Background
The GOA (Gate driver On Array, Array substrate line driver) circuit is a driving chip which is directly manufactured On the Array substrate to replace an external silicon chip. The GOA circuit can be directly manufactured around the panel, so that the manufacturing process is simplified, the product cost can be reduced, the integration level of the liquid crystal panel is improved, and the panel tends to be thinner. In addition, the woa (wire On array) layout design is to directly route wires On the array substrate to replace a Flexible Printed Circuit (FPC) to connect data signals On the scan lines and the data lines, and the layout method can significantly reduce the weight of the panel and reduce the cost.
In addition, in the tft lcd panel, it is also important to add an ESD (Electro-Static Discharge) protection circuit for ESD. The ESD protection circuit is conducted in time to discharge ESD discharge current so as to prevent circuit elements in the panel from being damaged by static electricity. In the prior art, a solution of the overcurrent Protection of the GOA circuit is that, in a normal operating mode, a large change of a Current value caused by a short circuit is utilized, an OCP (Over Current Protection) mechanism on hardware is used to determine whether a preset threshold is reached, and when the preset threshold is reached, the GOA circuit enters a Protection mode. However, when the operation mode (such as the flat display mode/the stereoscopic display mode) is different from the temperature, the protection point is easily triggered by mistake, and the power is turned off. The other solution is to add a series-connected short-circuit resistor in a normal operating mode by using an ESD protection circuit at the front end of the GOA circuit, so that the current flowing through the ESD protection circuit in a short-circuit fault state is reduced, and the heating temperature is further reduced. However, this solution does not detect whether a failure has indeed occurred.
In view of the above, it is an urgent subject to be solved by those skilled in the art how to design an over-current protection scheme for a GOA circuit to solve the above-mentioned defects and shortcomings in the prior art.
Disclosure of Invention
Aiming at the defects of the array substrate row driving circuit in the prior art during overcurrent detection, the invention provides a novel driving control circuit and an overcurrent protection method of a GOA circuit in the driving control circuit, so as to avoid false triggering caused by current difference caused by different operating environments during normal use, and further improve the operation reliability of the GOA circuit.
According to an aspect of the present invention, an overcurrent protection method for an array substrate row driving circuit is provided, which includes the following steps:
isolating or turning off the GOA circuit;
receiving at least one current signal from a control board;
comparing the current signal with a preset short-circuit current threshold; and
selecting an operation mode of the GOA circuit according to a comparison result, wherein when the current signal is smaller than the short-circuit current threshold, the GOA circuit is turned on to enter a normal operation mode; when the current signal is larger than or equal to the short-circuit current threshold, keeping the GOA circuit closed to enter an overcurrent protection mode.
In an embodiment of the foregoing method, the method further includes: providing an and gate circuit including a first input terminal, a second input terminal and an output terminal, wherein the output terminal is electrically coupled to the GOA circuit; receiving a switching signal from the control board from a first input terminal of the AND circuit; and receiving at least one current signal from a control board from a second input end of the and circuit, wherein when the switch signal is at a low level, the and circuit outputs zero so as to isolate the current signal from the GOA circuit; when the switch signal is at a high level, the AND gate circuit is opened so that the current signal enters the GOA circuit.
In one embodiment, the and circuit is integrated inside the GOA circuit.
In an embodiment of the foregoing method, the method further includes: setting a starting signal of the GOA circuit; and controlling the level state of the starting signal to close or open the GOA circuit.
In one embodiment, when the enable signal is at a low level, the GOA circuit is turned off; when the starting signal is in a high level, the GOA circuit is turned on.
In an embodiment of the foregoing method, the method further includes: setting a starting signal of the GOA circuit to be at a low level so as to temporarily close the GOA circuit; delaying a preset time period, and comparing the current signal with the short-circuit current threshold value in the preset time period; when the current signal is smaller than the short-circuit current threshold, switching the starting signal from a low level to a high level to enable the GOA circuit to enter a normal working mode; when the current signal is larger than or equal to the short-circuit current threshold value, the starting signal keeps a low level so that the GOA circuit enters an overcurrent protection mode.
According to another aspect of the present invention, there is provided a driving control circuit for a liquid crystal display device, comprising:
the control board is used for outputting a switching signal and at least one path of current signal;
an and circuit electrically coupled to the control board, including a first input terminal for receiving the switching signal, a second input terminal for receiving the current signal, and an output terminal; and
the array substrate column driving circuit is electrically coupled to the output end of the AND gate circuit, wherein when the switch signal is at a low level, the GOA circuit is closed; when the switch signal is at a high level, the GOA circuit is turned on.
In an embodiment of the present invention, the driving control circuit further includes an overcurrent protection unit, configured to compare the current signal with a preset short-circuit current threshold, and the control board controls a level state of the switching signal according to a comparison result.
In one embodiment, when the current signal is smaller than the short-circuit current threshold, the control board outputs a high-level switching signal; when the current signal is larger than or equal to the short-circuit current threshold value, the control board outputs a low-level switching signal.
By adopting the drive control circuit and the over-current protection method of the GOA circuit, the GOA circuit is isolated or closed, when at least one path of current signal from the control panel is received, the current signal is compared with a preset short-circuit current threshold value, and then the operation mode of the GOA circuit is selected according to the comparison result. When the current signal is smaller than the short-circuit current threshold, the GOA circuit is opened to enter a normal working mode; when the current signal is greater than or equal to the short-circuit current threshold, the GOA circuit is kept closed to enter an overcurrent protection mode. Compared with the prior art, the short-circuit protection mechanism can independently judge whether each current signal from the control board exceeds the short-circuit current threshold value or not by means of delaying the opening or closing of the GOA circuit, so that false touch protection actions caused by different current sizes due to different operation modes (such as a plane display mode/a three-dimensional display mode) and different temperatures are avoided, and the operation reliability of the GOA circuit is improved.
Drawings
The various aspects of the present invention will become more apparent to the reader after reading the detailed description of the invention with reference to the attached drawings. Wherein,
fig. 1 is a schematic structural diagram of a GOA circuit with an overcurrent protection function in the prior art;
fig. 2 is a schematic diagram illustrating the principle of overcurrent protection of the GOA circuit of fig. 1;
fig. 3 is a flow chart of an over-current protection method for a GOA circuit according to an embodiment of the present invention;
fig. 4 is a schematic diagram illustrating the principle of overcurrent protection of the GOA circuit of fig. 3;
fig. 5 shows a first embodiment of a GOA circuit employing the overcurrent protection method of fig. 3; and
fig. 6 shows a second embodiment of a GOA circuit employing the overcurrent protection method of fig. 3.
Detailed Description
In order to make the present disclosure more complete and complete, reference is made to the accompanying drawings, in which like references indicate similar or analogous elements, and to the various embodiments of the invention described below. However, it will be understood by those of ordinary skill in the art that the examples provided below are not intended to limit the scope of the present invention. In addition, the drawings are only for illustrative purposes and are not drawn to scale.
Fig. 1 shows a schematic structural diagram of a GOA circuit with an overcurrent protection function in the prior art. Fig. 2 is a schematic diagram illustrating the principle of overcurrent protection of the GOA circuit shown in fig. 1. Referring to fig. 1 and 2, as mentioned above, the control board outputs at least one current signal, and the current signals enter the array substrate row driver circuit (GOA circuit) via the esd protection circuit.
In one case, if the trace directly on the array substrate fails, in the normal operating mode, a large change in current value due to a short circuit is used to determine whether a predetermined threshold is reached by an OCP (over current protection) mechanism on the hardware, and when the predetermined threshold is reached, the GOA circuit enters the protection mode. However, as can be seen from fig. 2, the overcurrent detection method is to superimpose the normal use current signal and the abnormal short-circuit current signal, and when the operation mode is different (such as the flat display mode/the stereoscopic display mode) and the temperature is different, which causes a current value difference, the protection point is easily triggered by mistake, which causes the power to be turned off.
In another situation, if the electrostatic protection circuit fails, in the normal operation mode, the series short-circuit resistor is added to reduce the current flowing through the electrostatic protection circuit in the short-circuit fault state, thereby reducing the heating temperature. However, this solution does not detect whether a failure has indeed occurred.
In order to overcome the above-mentioned drawbacks of the prior art, the present invention provides a novel overcurrent protection method. Fig. 3 is a flow chart of a method for overcurrent protection of a GOA circuit according to an embodiment of the present invention, and fig. 4 is a schematic diagram of the GOA circuit of fig. 3 for overcurrent protection.
Referring to fig. 3, in the method for overcurrent protection of the GOA circuit, step S11 is first executed to isolate or shut down the GOA circuit. For example, when the control board normally outputs at least one path of current signals, the current signals cannot enter the GOA circuit through a certain isolation measure; for another example, an on-off signal of the GOA circuit may be set, and the on-off of the GOA circuit is controlled by a level state of the on-off signal. Then, step S13 is executed to receive at least one current signal from the control board. Next, in step S15, the current signal is compared with a preset short-circuit current threshold. For example, the OCP mechanism is used to detect whether the current signal exceeds a predetermined short-circuit current threshold, and automatically turn off the power supply when the short-circuit current threshold is exceeded. Finally, in step S17, the operation mode of the GOA circuit is selected according to the comparison result. The plurality of operation modes include, but are not limited to, a normal operation mode (work mode) and an overcurrent protection mode (protection mode). When the current signal is smaller than the short-circuit current threshold, the GOA circuit is opened to enter a normal working mode; when the current signal is greater than or equal to the short-circuit current threshold, the GOA circuit is kept closed to enter an overcurrent protection mode.
As shown in fig. 4, when detecting whether an overcurrent occurs, the overcurrent protection method of the present invention only involves an abnormal short circuit, and does not involve normal use of current, so that a short circuit protection mechanism (such as an OCP hardware mechanism) can independently determine whether each current signal from the control board exceeds a short circuit current threshold, thereby avoiding false triggering protection actions caused by different current magnitudes due to different operation modes and temperatures, and further improving the operational reliability of the GOA circuit.
Fig. 5 illustrates a first embodiment of a GOA circuit employing the overcurrent protection method of fig. 3. Referring to fig. 5, the driving control circuit of the liquid crystal display device includes a control board, an and gate circuit, and an array substrate row driving circuit (GOA circuit). The control board is used for outputting a switching signal and a normal use current signal. The AND circuit (AND) is electrically coupled to the control board AND includes a first input terminal IN1, a second input terminal IN2, AND an output terminal (not shown). The first input terminal IN1 is used for receiving the switch signal, and the second input terminal IN2 is used for receiving the normal use current signal. The array substrate column driving circuit is electrically coupled to the output end of the AND circuit. Therefore, the level state of one input signal (such as a switch signal) of the and circuit is used for controlling the on or off of the and circuit. For example, when the switching signal is at a low level, the and gate circuit outputs no signal, and the GOA circuit outputs no input signal, which is equivalent to an off state; when the switch signal is at high level, the output signal of the AND gate circuit is completely consistent with the amplitude and phase of the normal use current signal, the GOA circuit normally receives the input signal, and the GOA circuit is turned on.
In one embodiment, the driving control circuit further includes an overcurrent protection unit (not shown) for comparing the current signal with a predetermined short-circuit current threshold, and the control board controls the level state of the switching signal according to the comparison result. For example, the over-current protection unit is an OCP hardware circuit. When the current signal is smaller than the short-circuit current threshold value, the control panel outputs a high-level switching signal; when the current signal is larger than or equal to the short-circuit current threshold value, the control board outputs a low-level switching signal.
In one embodiment, the and circuit may be integrated within the GOA circuit.
Fig. 6 shows a second embodiment of a GOA circuit employing the overcurrent protection method of fig. 3. Comparing fig. 6 with fig. 1, the main difference is that the over-current protection scheme of the present invention adds an enable signal ST to the GOA circuit, and controls the level state of the enable signal ST to turn off or on the GOA circuit. Similarly, when the start signal ST is low, the GOA circuit is turned off; when the enable signal ST is high, the GOA circuit is turned on.
In this embodiment, referring to fig. 6 and fig. 3, the over-current protection method first sets the start signal ST of the GOA circuit to a low level to temporarily turn off the GOA circuit. Then, a predetermined time period is delayed, during which the current signal is compared with the short circuit current threshold. When the current signal is smaller than the short-circuit current threshold, switching the starting signal ST from a low level to a high level to enable the GOA circuit to enter a normal working mode; when the current signal is greater than or equal to the short-circuit current threshold, the start signal ST continues to keep a low level so that the GOA circuit enters an overcurrent protection mode.
By adopting the drive control circuit and the over-current protection method of the GOA circuit, the GOA circuit is isolated or closed, when at least one path of current signal from the control panel is received, the current signal is compared with a preset short-circuit current threshold value, and then the operation mode of the GOA circuit is selected according to the comparison result. When the current signal is smaller than the short-circuit current threshold, the GOA circuit is opened to enter a normal working mode; when the current signal is greater than or equal to the short-circuit current threshold, the GOA circuit is kept closed to enter an overcurrent protection mode. Compared with the prior art, the short-circuit protection mechanism can independently judge whether each current signal from the control board exceeds the short-circuit current threshold value or not by means of delaying the opening or closing of the GOA circuit, so that false touch protection actions caused by different current sizes due to different operation modes (such as a plane display mode/a three-dimensional display mode) and different temperatures are avoided, and the operation reliability of the GOA circuit is improved.
Hereinbefore, specific embodiments of the present invention are described with reference to the drawings. However, those skilled in the art will appreciate that various modifications and substitutions can be made to the specific embodiments of the present invention without departing from the spirit and scope of the invention. Such modifications and substitutions are intended to be included within the scope of the present invention as defined by the appended claims.
Claims (9)
1. An overcurrent protection method of a Gate driver On Array (GOA) of an Array substrate is characterized by comprising the following steps:
isolating or turning off the GOA circuit;
receiving at least one current signal from a control board;
comparing the current signal with a preset short-circuit current threshold; and
selecting the operation mode of the GOA circuit according to the comparison result,
when the current signal is smaller than the short-circuit current threshold, the GOA circuit is turned on to enter a normal working mode; when the current signal is larger than or equal to the short-circuit current threshold, keeping the GOA circuit closed to enter an overcurrent protection mode.
2. The overcurrent protection method of claim 1, further comprising:
providing an and gate circuit including a first input terminal, a second input terminal and an output terminal, wherein the output terminal is electrically coupled to the GOA circuit;
receiving a switching signal from the control board from a first input terminal of the AND circuit; and
at least one current signal from a control board is received from a second input end of the AND gate circuit,
when the switch signal is at a low level, the output of the AND gate circuit is zero so as to isolate the current signal from the GOA circuit; when the switch signal is at a high level, the AND gate circuit is opened so that the current signal enters the GOA circuit.
3. The over-current protection method according to claim 2, wherein the and gate circuit is integrated inside the GOA circuit.
4. The overcurrent protection method of claim 1, further comprising:
setting a starting signal of the GOA circuit; and
and controlling the level state of the starting signal to close or open the GOA circuit.
5. The overcurrent protection method according to claim 4, wherein when the enable signal is low, the GOA circuit is turned off; when the starting signal is in a high level, the GOA circuit is turned on.
6. The over-current protection method according to claim 4, further comprising:
setting a starting signal of the GOA circuit to be at a low level so as to temporarily close the GOA circuit;
delaying a preset time period, and comparing the current signal with the short-circuit current threshold value in the preset time period; and
when the current signal is smaller than the short-circuit current threshold, switching the starting signal from a low level to a high level to enable the GOA circuit to enter a normal working mode; when the current signal is larger than or equal to the short-circuit current threshold value, the starting signal keeps a low level so that the GOA circuit enters an overcurrent protection mode.
7. A drive control circuit for a liquid crystal display device, the drive control circuit comprising:
the control board is used for outputting a switching signal and at least one path of current signal;
an and circuit electrically coupled to the control board, including a first input terminal for receiving the switching signal, a second input terminal for receiving the current signal, and an output terminal; and
the array substrate column driving circuit is electrically coupled to the output end of the AND gate circuit, wherein when the switch signal is at a low level, the GOA circuit is closed; when the switch signal is at a high level, the GOA circuit is turned on.
8. The driving control circuit according to claim 7, further comprising an over-current protection unit for comparing the current signal with a preset short-circuit current threshold, wherein the control board controls the level state of the switching signal according to the comparison result.
9. The drive control circuit according to claim 8, wherein the control board outputs a switching signal of a high level when the current signal is smaller than the short-circuit current threshold; when the current signal is larger than or equal to the short-circuit current threshold value, the control board outputs a low-level switching signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510139976.1A CN104700811A (en) | 2015-03-27 | 2015-03-27 | Driving control circuit and over-current protection method of GOA circuit thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510139976.1A CN104700811A (en) | 2015-03-27 | 2015-03-27 | Driving control circuit and over-current protection method of GOA circuit thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104700811A true CN104700811A (en) | 2015-06-10 |
Family
ID=53347870
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510139976.1A Pending CN104700811A (en) | 2015-03-27 | 2015-03-27 | Driving control circuit and over-current protection method of GOA circuit thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104700811A (en) |
Cited By (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105093598A (en) * | 2015-08-07 | 2015-11-25 | 深圳市华星光电技术有限公司 | Gate-driver-on-array short-circuit protection circuit and liquid crystal display panel |
| CN105162077A (en) * | 2015-10-13 | 2015-12-16 | 深圳市华星光电技术有限公司 | Line protection circuit and LCD |
| CN105304050A (en) * | 2015-11-20 | 2016-02-03 | 深圳市华星光电技术有限公司 | Over-current protection circuit and over-current protection method |
| CN105448262A (en) * | 2015-12-31 | 2016-03-30 | 厦门天马微电子有限公司 | Display device and current protection method therefor |
| CN105448261A (en) * | 2015-12-31 | 2016-03-30 | 深圳市华星光电技术有限公司 | Liquid crystal display |
| CN105761696A (en) * | 2016-05-12 | 2016-07-13 | 深圳市华星光电技术有限公司 | Display panel and overcurrent protection circuit of array substrate row driving circuit thereof |
| CN106297702A (en) * | 2016-08-31 | 2017-01-04 | 深圳市华星光电技术有限公司 | Liquid crystal indicator and current foldback circuit thereof |
| CN106409263A (en) * | 2016-11-29 | 2017-02-15 | 青岛海信电器股份有限公司 | Liquid crystal panel and protection method for its line short circuit |
| CN108614174A (en) * | 2018-06-11 | 2018-10-02 | 国网湖北省电力有限公司孝感供电公司 | The tester and test system of secondary resonance elimination device |
| CN109346019A (en) * | 2018-11-22 | 2019-02-15 | 深圳市华星光电技术有限公司 | Overcurrent protection control circuit for level shift circuit |
| CN109493773A (en) * | 2018-12-11 | 2019-03-19 | 惠科股份有限公司 | Design method of overcurrent protection value of display panel and test machine |
| WO2019051906A1 (en) * | 2017-09-13 | 2019-03-21 | 深圳市华星光电技术有限公司 | Overcurrent protection circuit and liquid crystal display |
| US10311820B2 (en) | 2017-09-13 | 2019-06-04 | Shenzhen China Star Optoelectronics Technology Co., Ltd | Over current protection circuit and liquid crystal display |
| CN110120656A (en) * | 2019-05-16 | 2019-08-13 | 深圳市华星光电技术有限公司 | Overcurrent protection circuit and its driving method |
| WO2020113637A1 (en) * | 2018-12-03 | 2020-06-11 | 惠科股份有限公司 | Overcurrent protection method and display device |
| CN111312194A (en) * | 2020-04-03 | 2020-06-19 | 深圳市华星光电半导体显示技术有限公司 | Protection system for GOA circuit and liquid crystal display panel |
| WO2020133835A1 (en) * | 2018-12-26 | 2020-07-02 | 深圳市华星光电半导体显示技术有限公司 | Display device |
| WO2020135021A1 (en) * | 2018-12-25 | 2020-07-02 | 惠科股份有限公司 | Overcurrent protection method, display panel, and overcurrent protection apparatus |
| WO2020133579A1 (en) * | 2018-12-27 | 2020-07-02 | 惠科股份有限公司 | Current limiting circuit and display device |
| CN111508418A (en) * | 2020-05-12 | 2020-08-07 | Tcl华星光电技术有限公司 | Driving circuit and driving method of display device |
| CN111681622A (en) * | 2020-06-05 | 2020-09-18 | Tcl华星光电技术有限公司 | Level shifter for liquid crystal display panel and trigger current value adjusting method thereof |
| WO2020220525A1 (en) * | 2019-04-29 | 2020-11-05 | 深圳市华星光电技术有限公司 | Overcurrent protection circuit and method, and display device |
| WO2022007085A1 (en) * | 2020-07-09 | 2022-01-13 | Tcl华星光电技术有限公司 | Display device and display apparatus |
| CN114241968A (en) * | 2021-12-15 | 2022-03-25 | 惠州视维新技术有限公司 | GOA circuit with adjusting function, adjusting method and display panel |
| WO2022116284A1 (en) * | 2020-12-01 | 2022-06-09 | Tcl华星光电技术有限公司 | Display device and drive method therefor |
-
2015
- 2015-03-27 CN CN201510139976.1A patent/CN104700811A/en active Pending
Cited By (41)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105093598A (en) * | 2015-08-07 | 2015-11-25 | 深圳市华星光电技术有限公司 | Gate-driver-on-array short-circuit protection circuit and liquid crystal display panel |
| CN105093598B (en) * | 2015-08-07 | 2018-03-13 | 深圳市华星光电技术有限公司 | Array base palte row drives short-circuit protection circuit and liquid crystal panel |
| WO2017024601A3 (en) * | 2015-08-07 | 2017-05-18 | 深圳市华星光电技术有限公司 | Gate driver on array short circuit protection circuit and liquid crystal panel |
| WO2017063251A1 (en) * | 2015-10-13 | 2017-04-20 | 深圳市华星光电技术有限公司 | Circuit protection circuit and liquid crystal display |
| CN105162077A (en) * | 2015-10-13 | 2015-12-16 | 深圳市华星光电技术有限公司 | Line protection circuit and LCD |
| US9959797B2 (en) | 2015-10-13 | 2018-05-01 | Shenzhen China Star Optoelectronics Technology Co., Ltd | Route protection circuit and liquid crystal display |
| CN105304050A (en) * | 2015-11-20 | 2016-02-03 | 深圳市华星光电技术有限公司 | Over-current protection circuit and over-current protection method |
| US10102818B2 (en) * | 2015-12-31 | 2018-10-16 | Shenzhen China Star Optoelectronics Technology Co., Ltd. | Liquid crystal display |
| CN105448262A (en) * | 2015-12-31 | 2016-03-30 | 厦门天马微电子有限公司 | Display device and current protection method therefor |
| CN105448262B (en) * | 2015-12-31 | 2018-06-29 | 厦门天马微电子有限公司 | Display device and its current preventative method |
| US20170256222A1 (en) * | 2015-12-31 | 2017-09-07 | Shenzhen China Star Optoelectronics Technology Co., Ltd. | Liquid crystal display |
| CN105448261B (en) * | 2015-12-31 | 2018-05-18 | 深圳市华星光电技术有限公司 | Liquid crystal display |
| CN105448261A (en) * | 2015-12-31 | 2016-03-30 | 深圳市华星光电技术有限公司 | Liquid crystal display |
| CN105761696A (en) * | 2016-05-12 | 2016-07-13 | 深圳市华星光电技术有限公司 | Display panel and overcurrent protection circuit of array substrate row driving circuit thereof |
| WO2017193437A1 (en) * | 2016-05-12 | 2017-11-16 | 深圳市华星光电技术有限公司 | Display panel and over-current protection circuit of gate driver on array circuit thereof |
| CN105761696B (en) * | 2016-05-12 | 2018-06-22 | 深圳市华星光电技术有限公司 | The current foldback circuit of display panel and its array substrate horizontal drive circuit |
| US10290244B2 (en) | 2016-05-12 | 2019-05-14 | Shenzhen China Star Optoelectronics Technology Co., Ltd | Display panel and overcurrent protection circuit of gate driver on array circuit for display panel |
| CN106297702A (en) * | 2016-08-31 | 2017-01-04 | 深圳市华星光电技术有限公司 | Liquid crystal indicator and current foldback circuit thereof |
| CN106409263A (en) * | 2016-11-29 | 2017-02-15 | 青岛海信电器股份有限公司 | Liquid crystal panel and protection method for its line short circuit |
| WO2019051906A1 (en) * | 2017-09-13 | 2019-03-21 | 深圳市华星光电技术有限公司 | Overcurrent protection circuit and liquid crystal display |
| US10311820B2 (en) | 2017-09-13 | 2019-06-04 | Shenzhen China Star Optoelectronics Technology Co., Ltd | Over current protection circuit and liquid crystal display |
| CN108614174A (en) * | 2018-06-11 | 2018-10-02 | 国网湖北省电力有限公司孝感供电公司 | The tester and test system of secondary resonance elimination device |
| WO2020103308A1 (en) * | 2018-11-22 | 2020-05-28 | 深圳市华星光电技术有限公司 | Overcurrent protection control circuit for use in level shift circuit |
| CN109346019A (en) * | 2018-11-22 | 2019-02-15 | 深圳市华星光电技术有限公司 | Overcurrent protection control circuit for level shift circuit |
| WO2020113637A1 (en) * | 2018-12-03 | 2020-06-11 | 惠科股份有限公司 | Overcurrent protection method and display device |
| CN109493773A (en) * | 2018-12-11 | 2019-03-19 | 惠科股份有限公司 | Design method of overcurrent protection value of display panel and test machine |
| WO2020135021A1 (en) * | 2018-12-25 | 2020-07-02 | 惠科股份有限公司 | Overcurrent protection method, display panel, and overcurrent protection apparatus |
| WO2020133835A1 (en) * | 2018-12-26 | 2020-07-02 | 深圳市华星光电半导体显示技术有限公司 | Display device |
| US11295691B2 (en) | 2018-12-27 | 2022-04-05 | HKC Corporation Limited | Current limiting circuit and display device |
| WO2020133579A1 (en) * | 2018-12-27 | 2020-07-02 | 惠科股份有限公司 | Current limiting circuit and display device |
| WO2020220525A1 (en) * | 2019-04-29 | 2020-11-05 | 深圳市华星光电技术有限公司 | Overcurrent protection circuit and method, and display device |
| CN110120656A (en) * | 2019-05-16 | 2019-08-13 | 深圳市华星光电技术有限公司 | Overcurrent protection circuit and its driving method |
| CN111312194A (en) * | 2020-04-03 | 2020-06-19 | 深圳市华星光电半导体显示技术有限公司 | Protection system for GOA circuit and liquid crystal display panel |
| WO2021196330A1 (en) * | 2020-04-03 | 2021-10-07 | 深圳市华星光电半导体显示技术有限公司 | Protection system for goa circuit and liquid crystal display panel |
| US11443665B2 (en) | 2020-04-03 | 2022-09-13 | Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd. | Protection system for goa circuit and liquid crystal display panel |
| CN111508418A (en) * | 2020-05-12 | 2020-08-07 | Tcl华星光电技术有限公司 | Driving circuit and driving method of display device |
| CN111681622A (en) * | 2020-06-05 | 2020-09-18 | Tcl华星光电技术有限公司 | Level shifter for liquid crystal display panel and trigger current value adjusting method thereof |
| WO2022007085A1 (en) * | 2020-07-09 | 2022-01-13 | Tcl华星光电技术有限公司 | Display device and display apparatus |
| WO2022116284A1 (en) * | 2020-12-01 | 2022-06-09 | Tcl华星光电技术有限公司 | Display device and drive method therefor |
| US11705055B2 (en) | 2020-12-01 | 2023-07-18 | Tcl China Star Optoelectronics Technology Co., Ltd. | Display device and method of driving thereof |
| CN114241968A (en) * | 2021-12-15 | 2022-03-25 | 惠州视维新技术有限公司 | GOA circuit with adjusting function, adjusting method and display panel |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104700811A (en) | Driving control circuit and over-current protection method of GOA circuit thereof | |
| CN109950885B (en) | Electrostatic protection device and method of display panel and display device | |
| CN106409263B (en) | Liquid crystal panel and line short-circuit protection method thereof | |
| US8619069B2 (en) | Power-off discharge circuit, and source driver circuit having the same | |
| US9745947B2 (en) | Ignition control circuit with short circuit protection | |
| CN110097860B (en) | Display module | |
| US10650719B2 (en) | Rapid discharging circuit, display device, rapid discharging method and display control method | |
| KR20170090978A (en) | Display apparatus with testing functions and driving circuit and driving method thereof | |
| CN102386612A (en) | Protection circuit for a power conversion apparatus | |
| US11966129B2 (en) | Display panel static electricity protection device, display panel static electricity protection method, and display device | |
| US9103888B2 (en) | Protection circuit and gate driving circuit for semiconductor switching device | |
| US20090153541A1 (en) | Liquid crystal panel driving apparatus | |
| US8564585B2 (en) | Source driver and display device with protection unit | |
| JP5053063B2 (en) | Auxiliary device and data transmission method, and auxiliary unit and electric circuit breaker including the device | |
| CN106228944A (en) | Level shift circuit and display panels | |
| CN102957140A (en) | Electrostatic discharge protection circuit and display device thereof | |
| JP2018180414A (en) | Liquid display device | |
| CN112992024A (en) | Display device and detection method thereof | |
| US9299306B2 (en) | Liquid crystal display device | |
| US8879229B2 (en) | Display panel driver circuit and overheat protection device thereof | |
| WO2020103308A1 (en) | Overcurrent protection control circuit for use in level shift circuit | |
| CN111986611B (en) | Protection circuit for display device, display device thereof, and method for protecting display device using protection circuit | |
| US9355609B2 (en) | Malfunction prevention circuit for COG-form source driver integrated circuit and flat panel display controller employing the same | |
| CN114301045A (en) | Electrostatic protection circuit, display panel and electrostatic protection method | |
| KR20180120344A (en) | A display device and a protection method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150610 |