CN109727587A - Improve the liquid crystal display that backlighting frequency variation causes bright blanking bar - Google Patents
Improve the liquid crystal display that backlighting frequency variation causes bright blanking bar Download PDFInfo
- Publication number
- CN109727587A CN109727587A CN201910134337.4A CN201910134337A CN109727587A CN 109727587 A CN109727587 A CN 109727587A CN 201910134337 A CN201910134337 A CN 201910134337A CN 109727587 A CN109727587 A CN 109727587A
- Authority
- CN
- China
- Prior art keywords
- signal
- liquid crystal
- crystal display
- voltage
- level
- 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.)
- Granted
Links
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
- G09G3/34—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
Abstract
A kind of liquid crystal display, it includes gate drivers, gate drivers, power-supply controller of electric, PWM generator, backlight module and control modules.The gate drivers are used to control signal according to level, export the level of scanning signal.The power-supply controller of electric is used to out-put supply signal.The PWM generator is used to output pulse width modulated signal.The backlight module is electrically connected the PWM generator, is used to generate light according to the pulse-width signal.The control module is electrically connected the PWM generator and the gate drivers, for adjusting the power supply signal according to the pulse-width signal to export the level control signal.Liquid crystal display of the invention is with the beneficial effect for during display being not in bright blanking bar.
Description
Technical field
The present invention relates to field of display technology, espespecially a kind of liquid crystal display for improving backlighting frequency variation and causing bright blanking bar
Device.
Background technique
Liquid crystal display (Liquid Crystal Display, LCD) includes multiple pixels (pixel) with matrix arrangement
Mode is arranged, and pixel itself does not shine, and needs to utilize thin film transistor (the Thin Film being formed in pixel
Transistor, TFT) on or off and be supplied to the suitable data voltage of the liquid crystal in pixel, and cooperate uniform backlight
Source, and liquid crystal display is made to show frame out.
However due to processing procedure, when by backlight illumination, amorphous silicon layer (Amorphous silicon, a- can be made
Si conduction) increases.That is, the moment that backlight is opened, the electric conductivity of the amorphous silicon layer of thin film transistor (TFT), which can approach, to be led
Body, causes to kick back voltage (feed through Voltage) and becomes larger.Therefore, the film crystal opened in the backlight open period
The corresponding pixel of pipe can be partially dark, relatively, when backlight is closed, kicks back voltage and becomes smaller, therefore pixel can be all partially bright.So liquid
Crystal display will appear the defect of bright blanking bar during display.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of liquid crystal display, to solve the liquid crystal display of the prior art
The problem of will appear bright blanking bar during display.
Technical solution of the present invention provides a kind of liquid crystal display, and it includes gate drivers, gate drivers, power supply controls
Device, PWM generator, backlight module and control module processed.The gate drivers are used to control signal, output according to level
The level of scanning signal.The power-supply controller of electric is used to out-put supply signal.The PWM generator is for output pulse width modulation
Signal.The backlight module is electrically connected the PWM generator, is used to generate light according to the pulse-width signal.It should
Control module is electrically connected the PWM generator and the gate drivers, is used to according to the pulse-width signal tune
The power supply signal is saved to export the level control signal.
Embodiment according to the present invention, the control module include switch block and voltage regulator circuit.The switch block
For according to the pulse-width signal, output voltage adjustment signal.The voltage regulator circuit is electrically connected the power supply control
Device and the switch block, are used to according to the regulated voltage signal, and the power supply signal is converted into the level control letter
Number.
Embodiment according to the present invention, the voltage regulator circuit include first resistor, second resistance and 3rd resistor.It should
First resistor is electrically connected the power-supply controller of electric.The second resistance is electrically connected the power-supply controller of electric and the switch block
Between.The 3rd resistor is electrically connected between the first resistor and the gate drivers.
Embodiment according to the present invention, the voltage regulator circuit additionally comprise diode and inductance.The anode of the diode
It is connected to the power-supply controller of electric, cathode is connected to the 3rd resistor.The inductance is being electrically connected at the diode just
Pole.
Embodiment according to the present invention, the voltage regulator circuit, which is used to transmit the voltage in the switch block, to be adjusted
When signal, it is converted into having the level of first voltage level to control signal the power supply signal, the voltage adjusts electricity
Road is used to when the switch block does not transmit the regulated voltage signal, and the power supply signal is converted into second voltage
The level of level controls signal, and the first voltage level is different from the second voltage level.
Embodiment according to the present invention, the first voltage level are greater than the second voltage level.
Embodiment according to the present invention, the switch block is when receiving the pulse-width signal, the first voltage
Level is determined by the resistance value of the resistance value and the 3rd resistor of the first resistor and second resistance parallel connection.
Embodiment according to the present invention, when the switch block does not receive the pulse-width signal, the second voltage
Level is determined by the resistance value of the first resistor and the resistance value of the 3rd resistor.
Embodiment according to the present invention, the switch block are a transistors, and grid is electrically connected at the pulsewidth tune
Signal processed, source electrode are electrically connected at ground terminal, and drain electrode is electrically connected at the second resistance.
Embodiment according to the present invention, the switch block is when receiving the pulse-width signal, the switch block
Ground voltage is connected.
Compared to the prior art, liquid crystal display of the present invention adjusts the output to the position of gate drivers by control module
Quasi- control signal.When backlight module receives pulse-width signal and emits beam, the scanning signal of scanner driver output
First voltage level can be greater than second voltage level.Therefore, the thin film transistor (TFT) of each pixel unit can receive the of higher level
The scanning signal of one voltage level and compensate and kick back voltage, so the film opened in the period that backlight module emits beam is brilliant
The brightness of pixel unit corresponding to body pipe improves.Therefore liquid crystal display of the invention has is not in during display
The beneficial effect of bright blanking bar.
For further understanding of the features and technical contents of the present invention, it please refers to below in connection with of the invention detailed
Illustrate and attached drawing, however, the drawings only provide reference and explanation, is not intended to limit the present invention.
Detailed description of the invention
Fig. 1 is the functional block diagram of liquid crystal display of the invention.
Fig. 2 is power-supply controller of electric, PWM generator and control module circuit diagram of the present invention.
Specific embodiment
The explanation of following embodiment is to can be used to the particular implementation of implementation to illustrate the present invention with reference to additional schema
Example.The direction term that the present invention is previously mentioned, such as "upper", "lower", "front", "rear", "left", "right", "top", "bottom", " water
It is flat ", " vertical " etc., be only the direction for referring to annexed drawings.Therefore, the direction term used is to illustrate and understand this hair
It is bright, rather than to limit the present invention.
Referring to Fig. 1, Fig. 1 is the functional block diagram of liquid crystal display 10 of the invention.Liquid crystal display 10 includes control
Module 11, liquid crystal display panel 12, gate drivers (gate driver) 14, PWM generator 15, source electrode driver
(source driver) 16, power-supply controller of electric 17, backlight module 18 and sequence controller 19.Liquid crystal display panel 12 includes upper
Glass substrate and lower glass substrate and liquid crystal positioned there between.Liquid crystal display panel 12 includes several pixels
(pixel), and each pixel includes three and respectively represents the trichromatic pixel unit 20 of RGB (RGB) and constitute.With one
For the liquid crystal display panel 12 of 1024 × 768 resolution ratio, 1024 × 768 × 3 pixel units 20 is needed to be composed altogether.Liquid
LCD panel 12 is including top glass substrate and lower glass substrate and is filled into liquid crystal Clc between the two.LCD display
Plate 12 is arranged in including data line D1 to Dn, the scan line G1 intersected with data line D1 to Dn to Gm and with a matrix type
Multiple pixels of the infall of data line D1 to Dn and scan line G1 to Gm, wherein m and n is positive integer.
Each pixel unit 20 is formed in the lower glass substrate of liquid crystal display panel 12.Each pixel unit 20 includes thin
Film field effect transistor (Thin Film Transistor, TFT) and liquid crystal Clc.In the upper glass of liquid crystal display panel 12
Black matrix", colored filter (Color Filter, CF) are formed on substrate.Public electrode can such as twisted-nematic (TN)
The vertical electric field driving method of mode and vertical orientation (VA) mode is formed in top glass substrate, can also such as in-plane
The horizontal component of electric field driving method and pixel electrode for changing (IPS) mode and fringing field switching (FFS) mode are formed together in lower glass
On substrate.
Gate drivers 14 export scanning signal and the transistor 22 of every a line are sequentially opened, while source electrode driver 16
Then exporting corresponding data-signal to pixel unit 20 makes it be charged to respectively required voltage, to show different grayscale.When
After with a line charging, gate drivers 14 just close the scanning signal of the row, and then gate drivers 14 export again sweeps
It retouches signal to open the transistor 22 of next line, then charge and discharge is carried out by pixel unit 20 of the source electrode driver 16 to next line.
So sequentially go down, is started to charge until all charging completes of all pixels unit 20 of liquid crystal display panel 12, then from the first row.
In current liquid crystal display panel design, the purpose of gate drivers 14 is exported every a fixed intervals and is scanned
Signal is to liquid crystal display panel 12.With the liquid crystal display panel 12 of 1024 × 768 resolution ratio and the renewal frequency of 60Hz
For, the display time of each picture is about 1/60=16.67ms.So the pulse wave of each scanning signal is about
16.67ms/768=21.7 μ s.And source electrode driver 16 is then within the time of this 21.7 μ s, by 20 charge and discharge of pixel unit to institute
The voltage needed, to show corresponding grayscale.
Sequence controller 19 is included in input picture liquid crystal display panel 12 from what system board (not shown) received
Digital video data RGB rearrange, and the digital video data RGB rearranged is supplied to data driver 13.
Sequence controller 19 receives clock signal, such as vertical synchronizing signal Vsycn, horizontal synchronizing signal Hsync, data from system board
Enable signal DE and clock CLK, and the behaviour for controlling data driver 13 and gate drivers 14 is generated using clock signal
Make the control signal of timing.
Data driver 13 latched digital video data and digital video by latch under the control of sequence controller 19
Data are converted, and generate positive data voltage and negative data voltage as a result, then data driver 13 is mentioned to data line D1 to Dn
For positive data voltage and negative data voltage.Gate drivers 14 under the control of sequence controller 19 sequentially to scan line G1 extremely
Gm provides the width scan pulse with about horizontal cycle (about one frame time).For example, when being applied in a certain scan line
When adding sufficiently large positive voltage, then the grid for being connected to transistor 22 all in this scan line can all be opened, at this time
Pixel electrode in this scanning can be connect with data line D1 to Dn, and then (just via the data voltage on data line D1 to Dn
Data voltage or negative data voltage) it is carried out to charge to voltage appropriate.Then apply in this scan line sufficiently large
Negative voltage closes the grid for being connected to transistor 22 all in this scan line, reopens until next time, during which makes again
Charge is stored on liquid crystal Clc；Restart next scan line at this time, the pixel electrode in next scan line is filled
Electricity.So sequentially the video data of entire picture is written, then restarts (this duplicate frequency from first scan line again
For the inverse of a frame time).
Please refer to Fig. 1 and Fig. 2, Fig. 2 is power-supply controller of electric 17 of the present invention, 11 electricity of PWM generator 15 and control module
Road schematic diagram.Gate drivers 14 are used to control signal VGH, the scanning signal of control output to scan line G1-Gn according to level
The level of SCAN.Power-supply controller of electric 17 is used to out-put supply signal VP.PWM generator 15 is used to output pulse width modulation letter
Number PWM.Backlight module 18 is electrically connected the PWM generator 15, is used to generate light according to pulse-width signal PWM.
Control module 11 is electrically connected PWM generator 15 and gate drivers 14, is used to adjust according to pulse-width signal PWM
Power supply signal VP controls signal VGH with outputting level.The pulsewidth of pulse-width signal PWM is equal to the time of each frame.
Control module 11 includes diode D, inductance L, switch block Q1 and voltage regulator circuit 114.Voltage adjusts electricity
Road 114 includes first resistor R1, second resistance R2 and 3rd resistor R3.First resistor R1 is electrically connected power-supply controller of electric 17.The
Two resistance R2 are electrically connected between power-supply controller of electric 17 and switch block Q1.3rd resistor R3 is electrically connected first resistor R1 and grid
Between driver 14.Described in the anode of diode D is connected to, the cathode of diode D is connected to 3rd resistor R3.Switch block
Q1 is used to according to pulse-width signal PWM, output voltage adjustment signal.Voltage regulator circuit 114 is electrically connected power-supply controller of electric
17 and switch block Q1, is used to according to regulated voltage signal VA, and power supply signal VP is converted into level control signal VGH.Switch
Component Q1 can be thin film transistor (TFT), and grid is connected to pulse-width signal PWM, and drain electrode is connected to second resistance R2,
Source electrode is connected to ground terminal.For switch block Q1 when receiving pulse-width signal PWM, ground voltage is connected in switch block Q1.
Operation principles according to the present embodiment, when PWM generator 15 exports the pulse-width signal PWM of high level
When, backlight module 18 understands the pulse-width signal PWM according to high level and generates light.Simultaneous Switching component Q1 can also be received
The pulse-width signal PWM of high level, and ground voltage (that is, regulated voltage signal VA) is connected to second resistance R2.At this point,
Level control signal VGH first voltage level VGH1 can by first resistor R1 and second resistance R2 parallel connection resistance value RP and
The resistance value of 3rd resistor R3 determines, that is, VGH1=(1+R3/RP) * VP.
When PWM generator 15 exports low level pulse-width signal PWM, backlight module 18 will not generate light
Line.Simultaneous Switching component Q1 can also receive low level pulse-width signal PWM and close.Switch block Q1 will not be led at this time
Ground voltage is connected to second resistance R2.Therefore second resistance R2 is in (floating) state of floating.At this moment level controls signal
The second voltage level VGH2 of VGH can be determined by the resistance value of first resistor R1 and 3rd resistor R3, that is, VGH2=(1+
R3/R1)*VP。
Because the first resistor R1 and resistance value RP of second resistance R2 parallel connection can be less than the resistance value of first resistor R1,
First voltage level VGH1 is greater than second voltage level VGH2.It does not emit beam in practical application, comparing backlight module 18
When, the thin film transistor (TFT) 22 of each pixel unit 20 kicks back voltage VFT2.Pulse-width signal PWM is received when backlight module 18 and
When emitting beam, although the voltage VFT1 that kicks back of the thin film transistor (TFT) 22 of each pixel unit 20 becomes larger, because of turntable driving
The first voltage level VGH1 for the scanning signal SCAN that device 14 exports is larger, and therefore, thin film transistor (TFT) 22 can receive higher level
First voltage level VGH1 scanning signal SCAN and compensate and kick back voltage VFT1, so backlight module 18 emit beam when
Section and open thin film transistor (TFT) 22 corresponding to 20 brightness of pixel unit improve.In this way, liquid crystal display of the invention
10 be not in the defect of bright blanking bar during display.
In summary, liquid crystal display of the present invention adjusts the output to the level control of gate drivers by control module
Signal.When backlight module receives pulse-width signal and emits beam, the first electricity of the scanning signal of scanner driver output
Pressure level can be greater than second voltage level.Therefore, the thin film transistor (TFT) of each pixel unit can receive the first voltage of higher level
The scanning signal of level and compensate and kick back voltage, so the thin film transistor (TFT) institute opened in the period that backlight module emits beam
The brightness of corresponding pixel unit improves.Therefore it is not in bright blanking bar during display that liquid crystal display of the invention, which has,
Beneficial effect.
Although the preferred embodiment is not to limit in conclusion the present invention has been disclosed as a preferred embodiment
The present invention, those of ordinary skill in the art can make various changes and profit without departing from the spirit and scope of the present invention
Decorations, therefore protection scope of the present invention subjects to the scope of the claims.
Claims (10)
1. a kind of liquid crystal display, which is characterized in that it includes:
Gate drivers are used to control signal according to level, export the level of scanning signal；
Power-supply controller of electric is used to out-put supply signal；
PWM generator is used to output pulse width modulated signal；
Backlight module is electrically connected the PWM generator, is used to generate light according to the pulse-width signal；And
Control module is electrically connected the PWM generator and the gate drivers, is used to according to the pulsewidth modulation
Power supply signal described in Signal Regulation is to export the level control signal.
2. liquid crystal display according to claim 1, which is characterized in that the control module includes:
Switch block is used to according to the pulse-width signal, output voltage adjustment signal；And
Voltage regulator circuit is electrically connected the power-supply controller of electric and the switch block, is used to adjust according to the voltage and believe
Number, the power supply signal is converted into the level and controls signal.
3. liquid crystal display according to claim 2, which is characterized in that the voltage regulator circuit includes:
First resistor is electrically connected the power-supply controller of electric；
Second resistance is electrically connected between the power-supply controller of electric and the switch block；And
3rd resistor is electrically connected between the first resistor and the gate drivers.
4. liquid crystal display according to claim 3, which is characterized in that the voltage regulator circuit additionally comprises:
Diode, anode are connected to the power-supply controller of electric, and cathode is connected to the 3rd resistor；And
Inductance is electrically connected at the anode of the diode.
5. liquid crystal display according to claim 3, which is characterized in that the voltage regulator circuit is used in the switch
When component transmits the regulated voltage signal, it is converted into having the level of first voltage level to control the power supply signal
Signal, the voltage regulator circuit are used to when the switch block does not transmit the regulated voltage signal, the power supply are believed
It number is converted into the level control signal with second voltage level, the first voltage level is different from the second voltage
Level.
6. liquid crystal display according to claim 5, which is characterized in that the first voltage level is greater than second electricity
Press level.
7. liquid crystal display according to claim 5, which is characterized in that the switch block is in the reception pulsewidth modulation
When signal, the first voltage level is the resistance value and the third by the first resistor and second resistance parallel connection
The resistance value of resistance determines.
8. liquid crystal display according to claim 5, which is characterized in that the switch block does not receive the pulsewidth modulation
When signal, the second voltage level is determined by the resistance value of the first resistor and the resistance value of the 3rd resistor.
9. liquid crystal display according to claim 5, which is characterized in that the switch block is a transistor, grid
It is electrically connected at the pulse-width signal, source electrode is electrically connected at ground voltage, and drain electrode is electrically connected at described second
Resistance.
10. liquid crystal display according to claim 9, which is characterized in that the switch block is in the reception pulsewidth tune
When signal processed, the ground voltage is connected in the switch block.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910134337.4A CN109727587B (en) | 2019-02-22 | 2019-02-22 | Liquid crystal display for improving bright and dark bands caused by backlight frequency change |
| PCT/CN2019/077951 WO2020168600A1 (en) | 2019-02-22 | 2019-03-13 | Liquid crystal display improving light and dark bands caused by change in backlighting frequency |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910134337.4A CN109727587B (en) | 2019-02-22 | 2019-02-22 | Liquid crystal display for improving bright and dark bands caused by backlight frequency change |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109727587A true CN109727587A (en) | 2019-05-07 |
| CN109727587B CN109727587B (en) | 2020-07-10 |
Family
ID=66301795
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910134337.4A Active CN109727587B (en) | 2019-02-22 | 2019-02-22 | Liquid crystal display for improving bright and dark bands caused by backlight frequency change |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN109727587B (en) |
| WO (1) | WO2020168600A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110910809A (en) * | 2019-11-25 | 2020-03-24 | Tcl华星光电技术有限公司 | Drive circuit and display device |
| CN111048053A (en) * | 2020-01-03 | 2020-04-21 | Tcl华星光电技术有限公司 | Liquid crystal display device and driving method thereof |
| CN112017600A (en) * | 2019-05-30 | 2020-12-01 | 京东方科技集团股份有限公司 | Driving device and method of liquid crystal display panel and display device |
| CN113053326A (en) * | 2021-03-16 | 2021-06-29 | Tcl华星光电技术有限公司 | Backlight driving circuit and display device |
| CN113160730A (en) * | 2021-04-07 | 2021-07-23 | Tcl华星光电技术有限公司 | Drive circuit and display device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050231458A1 (en) * | 2004-03-30 | 2005-10-20 | Funai Electric Co., Ltd. | Liquid crystal display television, backlight control device, and backlight control method |
| US20060164370A1 (en) * | 2005-01-24 | 2006-07-27 | Chul-Woo Park | Liquid crystal display device |
| CN102647170A (en) * | 2011-12-30 | 2012-08-22 | 友达光电股份有限公司 | Grid high voltage generator and display module |
| CN101398553B (en) * | 2007-09-27 | 2013-02-13 | 北京京东方光电科技有限公司 | Liquid crystal display device and driving method thereof |
| CN103091897B (en) * | 2013-02-01 | 2015-08-12 | 信利半导体有限公司 | A kind of liquid crystal indicator |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7088059B2 (en) * | 2004-07-21 | 2006-08-08 | Boca Flasher | Modulated control circuit and method for current-limited dimming and color mixing of display and illumination systems |
| CN100483195C (en) * | 2006-06-09 | 2009-04-29 | 群康科技(深圳)有限公司 | Liquid crystal display burning device and burning method |
| KR101227655B1 (en) * | 2006-06-27 | 2013-01-30 | 삼성디스플레이 주식회사 | Liquid crystal display device and driving method thereof |
| KR101319339B1 (en) * | 2008-05-09 | 2013-10-16 | 엘지디스플레이 주식회사 | Driving circuit for liquid crystal display device and method for driving the same |
| KR101565937B1 (en) * | 2008-07-28 | 2015-11-06 | 삼성디스플레이 주식회사 | Backlight assembly display apparatus comprising the same and driving method of the display apparatus |
| CN106647072A (en) * | 2016-10-20 | 2017-05-10 | 深圳市华星光电技术有限公司 | Array substrate, liquid crystal displayer and display device |
-
2019
- 2019-02-22 CN CN201910134337.4A patent/CN109727587B/en active Active
- 2019-03-13 WO PCT/CN2019/077951 patent/WO2020168600A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050231458A1 (en) * | 2004-03-30 | 2005-10-20 | Funai Electric Co., Ltd. | Liquid crystal display television, backlight control device, and backlight control method |
| US20060164370A1 (en) * | 2005-01-24 | 2006-07-27 | Chul-Woo Park | Liquid crystal display device |
| CN101398553B (en) * | 2007-09-27 | 2013-02-13 | 北京京东方光电科技有限公司 | Liquid crystal display device and driving method thereof |
| CN102647170A (en) * | 2011-12-30 | 2012-08-22 | 友达光电股份有限公司 | Grid high voltage generator and display module |
| CN103091897B (en) * | 2013-02-01 | 2015-08-12 | 信利半导体有限公司 | A kind of liquid crystal indicator |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112017600A (en) * | 2019-05-30 | 2020-12-01 | 京东方科技集团股份有限公司 | Driving device and method of liquid crystal display panel and display device |
| CN112017600B (en) * | 2019-05-30 | 2022-02-01 | 京东方科技集团股份有限公司 | Driving device and method of liquid crystal display panel and display device |
| CN110910809A (en) * | 2019-11-25 | 2020-03-24 | Tcl华星光电技术有限公司 | Drive circuit and display device |
| CN111048053A (en) * | 2020-01-03 | 2020-04-21 | Tcl华星光电技术有限公司 | Liquid crystal display device and driving method thereof |
| CN113053326A (en) * | 2021-03-16 | 2021-06-29 | Tcl华星光电技术有限公司 | Backlight driving circuit and display device |
| CN113053326B (en) * | 2021-03-16 | 2022-04-26 | Tcl华星光电技术有限公司 | Backlight driving circuit and display device |
| CN113160730A (en) * | 2021-04-07 | 2021-07-23 | Tcl华星光电技术有限公司 | Drive circuit and display device |
| US11908359B2 (en) | 2021-04-07 | 2024-02-20 | Tcl China Star Optoelectronics Technology Co., Ltd. | Driving circuit and display device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109727587B (en) | 2020-07-10 |
| WO2020168600A1 (en) | 2020-08-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109727587A (en) | Improve the liquid crystal display that backlighting frequency variation causes bright blanking bar | |
| KR101159354B1 (en) | Apparatus and method for driving inverter, and image display apparatus using the same | |
| US9478175B2 (en) | Backlight unit and liquid crystal display using the same | |
| US20120092392A1 (en) | Liquid Crystal Display Apparatus | |
| US20060055660A1 (en) | Light source device | |
| CN100357792C (en) | A liquid crystal display | |
| JP2001183622A (en) | Display device and light source device | |
| US9105240B2 (en) | Structure of light emitting device array and drive method for display light source | |
| CN102881254B (en) | Driving system and driving method for improving picture quality | |
| KR20080010133A (en) | Lcd and drive method thereof | |
| CN101282608A (en) | Lamp driving apparatus for liquid crystal display device | |
| CN104464678A (en) | Liquid crystal display device and driving method thereof | |
| CN107886917A (en) | Display device and its voltage compensating method | |
| CN102867487A (en) | Liquid crystal display device and method for driving the same | |
| CN109147695A (en) | Liquid crystal display device and its driving method | |
| KR101818459B1 (en) | Driving circuit of liquid crystal device for a smart tv and method for driving the same | |
| KR100389026B1 (en) | Apparatus and method for driving backlight of liquid crystal display device | |
| KR101615769B1 (en) | Liquid Crystal Display And Driving Method Thereof | |
| CN107146582B (en) | Backlight driver and its driving method | |
| KR101245924B1 (en) | Liquid Crystal Display | |
| CN201397660Y (en) | Drive circuit for driving liquid crystal module group | |
| KR20080050877A (en) | Lcd and drive method thereof | |
| KR101264704B1 (en) | LCD and drive method thereof | |
| KR20120020454A (en) | Apparatus and method for liquid crystal display device | |
| KR101687804B1 (en) | Apparatus and method for liquid crystal 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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |