CN107705763A - Level shifting circuit and liquid crystal display device - Google Patents
Level shifting circuit and liquid crystal display device Download PDFInfo
- Publication number
- CN107705763A CN107705763A CN201710949422.7A CN201710949422A CN107705763A CN 107705763 A CN107705763 A CN 107705763A CN 201710949422 A CN201710949422 A CN 201710949422A CN 107705763 A CN107705763 A CN 107705763A
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- electrically connected
- collecting unit
- switching tube
- shifting circuit
- comparator
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Classifications
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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
- G09G3/34—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 by control of light from an independent source
- G09G3/36—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 by control of light from an independent source using liquid crystals
-
- 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
- G09G2310/0289—Details of voltage level shifters arranged for use in a driving circuit
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (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 level shifting circuit and liquid crystal display device.The level shifting circuit includes electrical level transferring chip and overcurrent protection start-up circuit, the overcurrent protection start-up circuit includes acquisition module, comparator, switching tube, and first partial pressure unit, during work, acquisition module is acquired the voltage increase for the in-phase input end for making comparator to constant pressure high potential, the comparator output high level conducting switching tube when the voltage of the in-phase input end of comparator is more than a reference voltage, the sense terminal of electrical level transferring chip is grounded through the first partial pressure unit, electrical level transferring chip is set to start overcurrent protection, the startup time of electrical level transferring chip overcurrent protection can be postponed, effectively avoid due to high current false triggering overcurrent protection caused by liquid crystal display device start.
Description
Technical field
The present invention relates to display technology field, more particularly to a kind of level shifting circuit and liquid crystal display device.
Background technology
Liquid crystal display device (Liquid Crystal Display, LCD) has thin fuselage, power saving, radiationless etc. numerous
Advantage, it is widely used, such as：LCD TV, mobile phone, personal digital assistant (PDA), digital camera, computer
Screen or notebook computer screen etc., occupy an leading position in flat display field.
Liquid crystal display device major part on existing market is backlight liquid crystal display device, and it includes liquid crystal display panel
And backlight module (Backlight Module).The operation principle of liquid crystal display panel is in thin-film transistor array base-plate
(Thin Film Transistor Array Substrate, TFT Array Substrate) and colored filter substrate
Liquid crystal molecule is poured between (Color Filter, CF), and applies driving voltage on two plate bases to control liquid crystal molecule
Direction of rotation, the light of backlight module is reflected into generation picture.
With the continuous development of liquid crystal display device industry manufacturing technology, it has been the most important hair of current industry to reduce cost
Open up one of direction.In addition to reducing production cost except optimizing processing procedure, the exploitation new material of liquid crystal display device, by related work(
Energy module, circuit etc. are integrated to LCD intralamellar part, are such as directly made gated sweep drive circuit using array process
(Gate Driver on Array, GOA) substitutes the external gated sweep to drive IC etc. on thin-film transistor array base-plate
Technology is also the Hot Contents that numerous liquid crystal display panel manufacturers fall over each other exploitation, further to reduce production cost.GOA technologies can
So that gate driving circuit is produced on tft array substrate with the array process of liquid crystal display panel, realize to grid line by line
The type of drive of scanning.Some clock signals of access are generally required in GOA circuits, to realize the function of its grid progressive scan.
In the prior art, it is defeated after generally initial clock signal is boosted using electrical level transferring chip (level shifter IC)
Go out into the GOA circuits of liquid crystal display panel.Because the clock signal cabling inside GOA is more, due to processing procedure, easily
There is short circuit, in order to prevent liquid crystal display panel to be burned, the electrical level transferring chip of prior art typically has overcurrent protection
Function, when there is overcurrent, electrical level transferring chip triggers overcurrent protection and stops outwards exporting clock signal, can effectively keep away
The problem of exempting to melt screen as caused by clock signal short circuit.Liquid crystal display device is during the use of reality, due to quickly opening
Shutdown, when making second of startup, part grid line is not turned off, and can now produce high current, triggers overcurrent protection, but real
On border high current caused by this start can't last very long, the high current of short time do not interfere with liquid crystal display dress
The normal use put, also only can just be produced in start, when in start if make the overcurrent protection of electrical level transferring chip
Open, can cause liquid crystal display device can not normal boot-strap.
The content of the invention
It is an object of the invention to provide a kind of level shifting circuit, can postpone electrical level transferring chip overcurrent protection
Start the time, effectively avoid due to high current false triggering overcurrent protection caused by liquid crystal display device start.
Another object of the present invention, which also resides in, provides a kind of liquid crystal display device, can effectively avoid because liquid crystal display fills
Put high current false triggering overcurrent protection caused by start.
To achieve the above object, present invention firstly provides a kind of level shifting circuit, including electrical level transferring chip and with electricity
The overcurrent protection start-up circuit that flat conversion chip is electrically connected with；
The overcurrent protection start-up circuit includes acquisition module, comparator, switching tube and the first partial pressure unit；
The input access constant pressure high potential of the acquisition module, output end are electrically connected with the in-phase input end of comparator；
The inverting input access reference voltage of the comparator, output end are electrically connected with the control terminal of switching tube；
The first end ground connection of the switching tube, the second end is electrically connected with the first end of the first partial pressure unit；
Second end of first partial pressure unit is electrically connected with the sense terminal of electrical level transferring chip；
The electrical level transferring chip starts overcurrent protection when its sense terminal is grounded through the first partial pressure unit.
The acquisition module includes the first collecting unit and the second collecting unit；
The input access constant pressure high potential of first collecting unit, output end are electrically connected with the defeated of the second collecting unit
Enter end；The output end of second collecting unit is electrically connected with the in-phase input end of comparator.
The acquisition module also includes the 3rd collecting unit；The input of 3rd collecting unit is electrically connected with first and adopted
Collect the output end of unit, output head grounding.
First collecting unit includes second resistance and the first electric capacity；The first end access constant pressure of the second resistance is high
Current potential, the second end are electrically connected with the input of the second collecting unit；The first end of first electric capacity and the second end difference are electrical
Connect first end and the second end of second resistance.
Second collecting unit includes the 4th resistance, and the first end of the 4th resistance is electrically connected with the first collecting unit
Output end, the second end be electrically connected with switching tube control terminal.
3rd collecting unit includes 3rd resistor and the second electric capacity, and the first end of the 3rd resistor is electrically connected with the
The output end of one collecting unit, the second end ground connection；The 3rd electricity is electrically connected in the first end of second electric capacity and the second end
The first end of resistance and the second end.
The switching tube is N-type FET, and the grid of the N-type FET is the control terminal of switching tube, and source electrode is
The first end of switching tube, drain as the second end of switching tube.
First partial pressure unit includes first resistor, and the first end of the first resistor is electrically connected with the second of switching tube
End, the second end are electrically connected with the sense terminal of electrical level transferring chip.
The present invention also provides a kind of liquid crystal display device, including above-mentioned level shifting circuit.
Beneficial effects of the present invention：A kind of level shifting circuit provided by the invention, including electrical level transferring chip and excessively electric
Stream protection start-up circuit, the overcurrent protection start-up circuit include acquisition module, comparator, switching tube and the first partial pressure unit,
During work, acquisition module is acquired the voltage increase for the in-phase input end for making comparator to constant pressure high potential, when comparator
Comparator output high level conducting switching tube when the voltage of in-phase input end is more than a reference voltage, by detecing for electrical level transferring chip
The partial pressure unit of end first ground connection is surveyed, electrical level transferring chip is started overcurrent protection, it is excessively electric electrical level transferring chip can be postponed
The startup time of protection is flowed, is effectively avoided due to high current false triggering overcurrent protection caused by liquid crystal display device start.This
A kind of liquid crystal display device provided is provided, can effectively be avoided due to high current false triggering caused by liquid crystal display device start
Overcurrent protection.
Brief description of the drawings
In order to be further understood that the feature of the present invention and technology contents, refer to below in connection with the detailed of the present invention
Illustrate and accompanying drawing, however accompanying drawing only provide with reference to and explanation use, be not used for being any limitation as the present invention.
In accompanying drawing,
Fig. 1 is the circuit diagram of the level shifting circuit of the present invention.
Embodiment
Further to illustrate the technological means and its effect of the invention taken, below in conjunction with being preferable to carry out for the present invention
Example and its accompanying drawing are described in detail.
Referring to Fig. 1, the present invention provides a kind of level shifting circuit, including electrical level transferring chip 100 and and level conversion
The overcurrent protection start-up circuit 200 that chip 100 is electrically connected with；
The overcurrent protection start-up circuit 200 includes acquisition module 210, comparator A1, switching tube 220 and first point
Press unit 230；
The input access constant pressure high potential VGH of the acquisition module 210, output end are electrically connected with comparator A1 same phase
Input；
The inverting input access reference voltage VREF of the comparator A1, output end are electrically connected with the control of switching tube 220
End processed；
The first end ground connection of the switching tube 220, the second end is electrically connected with the first end of the first partial pressure unit 230；
Second end of first partial pressure unit 230 is electrically connected with the sense terminal of electrical level transferring chip 100；
The electrical level transferring chip 100 starts overcurrent protection when its sense terminal is grounded through the first partial pressure unit 230.
Specifically, the acquisition module 210 includes the first collecting unit 211 and the second collecting unit 212；
The input access constant pressure high potential VGH of first collecting unit 211, it is single that output end is electrically connected with the second collection
The input of member 212；The output end of second collecting unit 212 is electrically connected with comparator A1 in-phase input end.
Specifically, first collecting unit 211 includes second resistance R2 and the first electric capacity C1；The second resistance R2's
First end accesses constant pressure high potential VGH, and the second end is electrically connected with the input of the second collecting unit 212；The first electric capacity C1
First end and the second end second resistance R2 first end and the second end is electrically connected.
Specifically, second collecting unit 212 includes the 4th resistance R4, and the first end of the 4th resistance R4 electrically connects
The output end of the first collecting unit 211 is connect, the second end is electrically connected with the control terminal of switching tube 220.
Further, the acquisition module 210 also includes the 3rd collecting unit 213；3rd collecting unit 213 it is defeated
Enter the output end that end is electrically connected with the first collecting unit 211, output head grounding.
Specifically, the 3rd collecting unit 213 includes 3rd resistor R3 and the second electric capacity C2, the 3rd resistor R3's
First end is electrically connected with the output end of the first collecting unit 211, the second end ground connection；The first end and second of the second electric capacity C2
3rd resistor R3 first end and the second end is electrically connected in end.
Specifically, the switching tube 220 is that N-type FET Q1, the N-type FET Q1 grid are switching tube
220 control terminal, source electrode are the first end of switching tube 220, are drained as the second end of switching tube 220.
Specifically, first partial pressure unit 230 includes first resistor R1, and the first end of the first resistor R1 electrically connects
The second end of switching tube 220 is connect, the second end is electrically connected with the sense terminal of electrical level transferring chip 100.
It should be noted that the level shifting circuit of the present invention is applied in liquid crystal display device, in liquid crystal display device
After start, acquisition module 210 gathers the constant pressure high potential VGH of the drive circuit output of liquid crystal display device, and compares input
The voltage increase of device A1 in-phase input end, specially constant pressure high potential VGH through second resistance R2 and 3rd resistor R3 partial pressures,
Increase the voltage of second resistance R2 the second end namely the 4th resistance R4 first end, and then make the 4th resistance R4 the second end
Voltage namely comparator A1 the increase of homophase input terminal voltage, and due to the first electric capacity C1 and the second electric capacity C2 presence, make
4th resistance R4 the second end namely comparator A1 homophase input terminal voltage need to be more than through can just increase to after a while
Reference voltage VREF, before the voltage of comparator A1 in-phase input end is more than reference voltage VREF, comparator A1 output
End output is low level, and switching tube 220 ends, and the first end of the first partial pressure unit 230 is off state, and now level turns
Change chip 100 and do not start overcurrent protection, when the voltage of comparator A1 in-phase input end is charged to more than reference voltage VREF
When, comparator A1 output end output high level, switching tube 220 turns on, first end the opening through conducting of the first partial pressure unit 230
Pipe 220 is closed to be grounded, so that the sense terminal of electrical level transferring chip 100 is grounded through the first partial pressure unit 230, electrical level transferring chip
100 start overcurrent protection, and the voltage for now having already been through comparator A1 in-phase input end is increased to more than reference voltage
VREF time, the startup time of the overcurrent protection of electrical level transferring chip 100 is delayed, is effectively avoided due to liquid crystal display device
High current false triggering overcurrent protection caused by start.
Further, the time that the voltage of comparator A1 in-phase input end is increased to more than reference voltage VREF can pass through
Capacitance to second resistance R2,3rd resistor R3, the 4th resistance R4 resistance value, the first electric capacity C1 and the second electric capacity C2, with
And reference voltage VREF magnitude of voltage is adjusted and controlled, namely the overcurrent protection of electrical level transferring chip 100 startup when
Between it is controllable.
It is noted that in order to simplify circuit, the component number of circuit is reduced, the acquisition module 210 also can be only
Including the first collecting unit 211 and the second collecting unit 212, at work, constant pressure high potential VGH through second resistance R2 partial pressures,
Increase the voltage of second resistance R2 the second end namely the 4th resistance R4 first end, and then make the 4th resistance R4 the second end
Voltage namely comparator A1 the increase of homophase input terminal voltage, and due to the first electric capacity C1 presence, make the 4th resistance R4's
Second end namely comparator A1 homophase input terminal voltage are needed through can just increase to more than reference voltage VREF after a while,
The effect of the present invention is equally reached, the realization of the present invention, now, the electricity of comparator A1 in-phase input end can't be influenceed
Press the time increased to more than reference voltage VREF can be by second resistance R2, the 4th resistance R4 resistance value, the first electric capacity
C1 capacitance and reference voltage VREF magnitude of voltage are adjusted and controlled, the overcurrent protection of electrical level transferring chip 100
The startup time it is controllable.
Based on same inventive concept, the present invention also provides a kind of liquid crystal display device, including above-mentioned level shifting circuit,
Can effectively it avoid due to high current false triggering overcurrent protection caused by liquid crystal display device start.No longer level is turned herein
Circuit is changed to be repeated.
In summary, level shifting circuit of the invention of the invention, including electrical level transferring chip and overcurrent protection open
Dynamic circuit, the overcurrent protection start-up circuit include acquisition module, comparator, switching tube and the first partial pressure unit, during work,
Acquisition module is acquired the voltage increase for the in-phase input end for making comparator to constant pressure high potential, when the homophase input of comparator
Comparator output high level conducting switching tube when the voltage at end is more than a reference voltage, by the sense terminal of electrical level transferring chip through the
One partial pressure unit is grounded, and electrical level transferring chip is started overcurrent protection, can be postponed electrical level transferring chip overcurrent protection
Start the time, effectively avoid due to high current false triggering overcurrent protection caused by liquid crystal display device start.The liquid of the present invention
Crystal device, can effectively it avoid due to high current false triggering overcurrent protection caused by liquid crystal display device start.
It is described above, for the person of ordinary skill of the art, can be with technique according to the invention scheme and technology
Other various corresponding changes and deformation are made in design, and all these changes and deformation should all belong to the appended right of the present invention
It is required that protection domain.
Claims (9)
- A kind of 1. level shifting circuit, it is characterised in that including electrical level transferring chip (100) and with electrical level transferring chip (100) The overcurrent protection start-up circuit (200) of electric connection；The overcurrent protection start-up circuit (200) includes acquisition module (210), comparator (A1), switching tube (220) and the One partial pressure unit (230)；The input access constant pressure high potential (VGH) of the acquisition module (210), output end are electrically connected with the same of comparator (A1) Phase input；The inverting input access reference voltage (VREF) of the comparator (A1), output end are electrically connected with switching tube (220) Control terminal；The first end ground connection of the switching tube (220), the second end is electrically connected with the first end of the first partial pressure unit (230)；Second end of first partial pressure unit (230) is electrically connected with the sense terminal of electrical level transferring chip (100)；The electrical level transferring chip (100) starts overcurrent protection when its sense terminal is grounded through the first partial pressure unit (230).
- 2. level shifting circuit as claimed in claim 1, it is characterised in that the acquisition module (210) includes the first collection Unit (211) and the second collecting unit (212)；The input access constant pressure high potential (VGH) of first collecting unit (211), it is single that output end is electrically connected with the second collection The input of first (212)；The output end of second collecting unit (212) is electrically connected with the in-phase input end of comparator (A1).
- 3. level shifting circuit as claimed in claim 2, it is characterised in that the acquisition module (210) is also adopted including the 3rd Collect unit (213)；The input of 3rd collecting unit (213) is electrically connected with the output end of the first collecting unit (211), defeated Go out end ground connection.
- 4. level shifting circuit as claimed in claim 2, it is characterised in that first collecting unit (211) includes second Resistance (R2) and the first electric capacity (C1)；The first end access constant pressure high potential (VGH) of the second resistance (R2), the second end are electrical Connect the input of the second collecting unit (212)；The first end of first electric capacity (C1) and the second end are electrically connected The first end of two resistance (R2) and the second end.
- 5. level shifting circuit as claimed in claim 2, it is characterised in that second collecting unit (212) includes the 4th Resistance (R4), the first end of the 4th resistance (R4) are electrically connected with the output end of the first collecting unit (211), and the second end is electrical The control terminal of connecting valve pipe (220).
- 6. level shifting circuit as claimed in claim 3, it is characterised in that the 3rd collecting unit (213) includes the 3rd Resistance (R3) and the second electric capacity (C2), the first end of the 3rd resistor (R3) are electrically connected with the defeated of the first collecting unit (211) Go out end, the second end ground connection；The of 3rd resistor (R3) is electrically connected in the first end of second electric capacity (C2) and the second end One end and the second end.
- 7. level shifting circuit as claimed in claim 1, it is characterised in that the switching tube (220) is N-type FET (Q1), the grid of the N-type FET (Q1) is the control terminal of switching tube (220), and source electrode is the first of switching tube (220) End, drains as the second end of switching tube (220).
- 8. level shifting circuit as claimed in claim 1, it is characterised in that first partial pressure unit (230) includes first Resistance (R1), the first end of the first resistor (R1) are electrically connected with the second end of switching tube (220), and the second end is electrically connected with electricity The sense terminal of flat conversion chip (100).
- 9. a kind of liquid crystal display device, it is characterised in that including the level shifting circuit as described in claim any one of 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710949422.7A CN107705763B (en) | 2017-10-12 | 2017-10-12 | Level conversion circuit and liquid crystal display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710949422.7A CN107705763B (en) | 2017-10-12 | 2017-10-12 | Level conversion circuit and liquid crystal display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107705763A true CN107705763A (en) | 2018-02-16 |
| CN107705763B CN107705763B (en) | 2020-04-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710949422.7A Active CN107705763B (en) | 2017-10-12 | 2017-10-12 | Level conversion circuit and liquid crystal display device |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108831361A (en) * | 2018-06-25 | 2018-11-16 | 南京熊猫电子制造有限公司 | A kind of LED backlight drive circuit |
| CN110085188A (en) * | 2019-05-05 | 2019-08-02 | 京东方科技集团股份有限公司 | The level converter and its control method and display panel of display panel |
| WO2020015178A1 (en) * | 2018-07-20 | 2020-01-23 | 深圳市华星光电半导体显示技术有限公司 | Liquid crystal display |
| CN110969974A (en) * | 2019-11-25 | 2020-04-07 | Tcl华星光电技术有限公司 | Power management circuit and method |
| CN110995243A (en) * | 2019-11-19 | 2020-04-10 | Tcl华星光电技术有限公司 | Level conversion circuit and display panel |
| CN111445883A (en) * | 2020-05-09 | 2020-07-24 | 福州京东方光电科技有限公司 | Control circuit, driving method thereof and display device |
| CN112017579A (en) * | 2020-09-02 | 2020-12-01 | Tcl华星光电技术有限公司 | Display device and driving system thereof |
| CN112908277A (en) * | 2021-02-03 | 2021-06-04 | 重庆先进光电显示技术研究院 | Gate-on voltage output control circuit, gate-less driving device and display device |
| CN114220405A (en) * | 2021-12-15 | 2022-03-22 | 惠州视维新技术有限公司 | Level conversion circuit, power supply integrated circuit, display device, and level conversion method |
| CN114283734A (en) * | 2022-01-28 | 2022-04-05 | 绵阳惠科光电科技有限公司 | Data drive protection circuit, device, display panel and display |
| CN114336502A (en) * | 2021-12-13 | 2022-04-12 | 重庆惠科金渝光电科技有限公司 | Overcurrent protection control method and gate-free driving chip |
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| CN114336502B (en) * | 2021-12-13 | 2024-06-25 | 重庆惠科金渝光电科技有限公司 | Overcurrent protection control method and gateless driving chip |
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| CN108831361B (en) * | 2018-06-25 | 2021-06-25 | 南京熊猫电子制造有限公司 | LED backlight driving circuit |
| CN108831361A (en) * | 2018-06-25 | 2018-11-16 | 南京熊猫电子制造有限公司 | A kind of LED backlight drive circuit |
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| CN110085188A (en) * | 2019-05-05 | 2019-08-02 | 京东方科技集团股份有限公司 | The level converter and its control method and display panel of display panel |
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| CN110995243A (en) * | 2019-11-19 | 2020-04-10 | Tcl华星光电技术有限公司 | Level conversion circuit and display panel |
| US11405038B2 (en) | 2019-11-19 | 2022-08-02 | Tcl China Star Optoelectronics Technology Co., Ltd. | Level shifter circuit and display panel |
| CN110969974A (en) * | 2019-11-25 | 2020-04-07 | Tcl华星光电技术有限公司 | Power management circuit and method |
| CN111445883A (en) * | 2020-05-09 | 2020-07-24 | 福州京东方光电科技有限公司 | Control circuit, driving method thereof and display device |
| CN111445883B (en) * | 2020-05-09 | 2021-10-29 | 福州京东方光电科技有限公司 | Control circuit, driving method thereof and display device |
| CN112017579B (en) * | 2020-09-02 | 2021-11-02 | Tcl华星光电技术有限公司 | Display device and driving system thereof |
| CN112017579A (en) * | 2020-09-02 | 2020-12-01 | Tcl华星光电技术有限公司 | Display device and driving system thereof |
| CN112908277A (en) * | 2021-02-03 | 2021-06-04 | 重庆先进光电显示技术研究院 | Gate-on voltage output control circuit, gate-less driving device and display device |
| CN112908277B (en) * | 2021-02-03 | 2022-11-15 | 重庆先进光电显示技术研究院 | Gate-on voltage output control circuit, gate-less driving device and display device |
| WO2022183609A1 (en) * | 2021-03-02 | 2022-09-09 | Tcl华星光电技术有限公司 | Driving circuit and display device |
| US11735102B2 (en) | 2021-03-02 | 2023-08-22 | Tcl China Star Optoelectronics Technology Co., Ltd. | Driving circuit and display device |
| CN114336502A (en) * | 2021-12-13 | 2022-04-12 | 重庆惠科金渝光电科技有限公司 | Overcurrent protection control method and gate-free driving chip |
| CN114336502B (en) * | 2021-12-13 | 2024-06-25 | 重庆惠科金渝光电科技有限公司 | Overcurrent protection control method and gateless driving chip |
| CN114220405A (en) * | 2021-12-15 | 2022-03-22 | 惠州视维新技术有限公司 | Level conversion circuit, power supply integrated circuit, display device, and level conversion method |
| CN114283734A (en) * | 2022-01-28 | 2022-04-05 | 绵阳惠科光电科技有限公司 | Data drive protection circuit, device, display panel and display |
| CN114283734B (en) * | 2022-01-28 | 2024-02-27 | 绵阳惠科光电科技有限公司 | Data driving protection circuit, device, display panel and display |
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Address after: 518132 No. 9-2 Ming Avenue, Guangming New District, Guangdong, Shenzhen Patentee after: TCL Huaxing Photoelectric Technology Co.,Ltd. Address before: 518132 No. 9-2 Ming Avenue, Guangming New District, Guangdong, Shenzhen Patentee before: Shenzhen China Star Optoelectronics Technology Co.,Ltd. |