CN109003585A - A kind of anti-smear circuit of liquid crystal display and a kind of liquid crystal display - Google Patents
A kind of anti-smear circuit of liquid crystal display and a kind of liquid crystal display Download PDFInfo
- Publication number
- CN109003585A CN109003585A CN201810852460.5A CN201810852460A CN109003585A CN 109003585 A CN109003585 A CN 109003585A CN 201810852460 A CN201810852460 A CN 201810852460A CN 109003585 A CN109003585 A CN 109003585A
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- circuit
- voltage
- liquid crystal
- crystal display
- smear
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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
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0257—Reduction of after-image effects
Abstract
The invention discloses a kind of anti-smear circuit of liquid crystal display and liquid crystal displays.The anti-smear circuit of the liquid crystal display includes: DC voltage booster circuit and switch chip, the output end of DC voltage booster circuit is connected to back light through switch chip, switch chip is when liquid crystal is overturn, extinguish back light to eliminate smear, further include: the filter capacitor being connected between the output end of DC voltage booster circuit and ground, and the controlling circuit of voltage regulation for stabilized supply voltage；Controlling circuit of voltage regulation is connected to DC voltage booster circuit, in the anti-smear circuit power up phase of liquid crystal display, supply voltage is discontinuously increased the operating voltage for back light by control DC voltage booster circuit, to solve the problems, such as that the anti-smear circuit of liquid crystal display influences supply voltage stability.
Description
Technical field
The present invention relates to technical field of liquid crystal display, in particular to a kind of anti-smear circuit of liquid crystal display.
Background technique
With the development of the technologies such as virtual reality, requirement of the people to Showing Effectiveness On Screen is higher and higher.For example, virtual
In the real helmet, screen is a very crucial device, and onlooker can be caused to generate dizziness etc. no if screen refresh rate deficiency
It is suitable.Currently in order to meet display require, some equipment can select using OLED (Organic Light-Emitting Diode,
Chinese: Organic Light Emitting Diode) screen, to meet virtual implementing helmet etc. to the need of screen quick response fast refresh
It asks, but OLED screen curtain is at high cost, screen resolution is difficult to be promoted, and causes screen window sense strong.
Therefore, some equipment substitute OLED screen curtain using the LCD screen of quick response, still, need since liquid crystal is overturn
The time is wanted, switching process is caused to be easy to produce smear problem, influences the viewing experience of user, therefore, it is also desirable to using " black plug "
Technology overcomes smear problem, i.e., is inserted into black frame image after picture frame is shown or closes back light.However, existing closing back
In radiant scheme, the problems such as operating voltage due to back light is periodically cut off, can generate biggish voltage ripple, shadow
Ring the stabilization of supply voltage.
Summary of the invention
The problem that voltage fluctuation shakiness in the smear circuit of backlight is closed in view of prior art liquid crystal display, proposes this hair
A kind of anti-smear circuit of bright liquid crystal display and a kind of liquid crystal display, to overcome the above problem or at least to be partially solved above-mentioned ask
Topic.
To achieve the goals above, present invention employs following technical solutions:
According to one aspect of the present invention, provide a kind of anti-smear circuit of liquid crystal display, comprising: DC voltage booster circuit and
Switch chip, the output end of DC voltage booster circuit are connected to back light through switch chip, switch chip when liquid crystal is overturn,
Extinguish the back light of liquid crystal display to eliminate smear, the anti-smear circuit of liquid crystal display further include: be connected to the defeated of DC voltage booster circuit
Filter capacitor between outlet and ground, and the controlling circuit of voltage regulation for stabilized supply voltage；Controlling circuit of voltage regulation is connected to
DC voltage booster circuit controls DC voltage booster circuit discontinuously by supply voltage liter in the power up phase of the anti-smear circuit of liquid crystal display
The operating voltage of a height of back light.
Optionally, filter capacitor is electrolytic capacitor.
Optionally, controlling circuit of voltage regulation includes: the switch control electricity being connected between supply voltage and DC voltage booster circuit
Road；ON-OFF control circuit acquires the voltage value of supply voltage, when the voltage value of supply voltage is lower than the first predeterminated voltage, disconnects
The connection of supply voltage and DC voltage booster circuit restores power supply electricity when the voltage value of supply voltage is higher than the second predeterminated voltage
The connection of pressure and DC voltage booster circuit.
Optionally, ON-OFF control circuit includes pressure sampling circuit, comparator, switching regulator controller and switching tube, switch
Pipe is connected between supply voltage and DC voltage booster circuit；
The input terminal of the output end connection comparator of pressure sampling circuit；
The output end connection switch tube controller of comparator；
Switching regulator controller is disconnected or is connected according to the comparison result control switch pipe of comparator.
Optionally, comparator is hysteresis loop comparator.
Optionally, controlling circuit of voltage regulation includes: signal output apparatus, and the output end of signal output apparatus is connected to direct current liter
The enable end of volt circuit, in the power up phase of the anti-smear circuit of liquid crystal display, signal output apparatus output pulse width modulated signal
Control DC voltage booster circuit interruption boosting.
Optionally, signal output apparatus by adjusting the pulse width modulating signal exported frequency and/or duty ratio,
Adjust the boost process of DC voltage booster circuit.
Optionally, after the completion of the anti-smear circuit of liquid crystal display powers on, signal output apparatus exports stable voltage control letter
Number, control DC voltage booster circuit continuous work.
Optionally, signal output apparatus includes: microcontroller.
According to another aspect of the invention, a kind of liquid crystal display is provided, which is provided with liquid any one of as above
Crystalline substance shields anti-smear circuit.
In conclusion the beneficial effects of the present invention are:
In liquid crystal display technology, based on the scheme for eliminating smear using switch chip closing back light, in direct current liter
Filter capacitor is arranged in the output end of volt circuit, to reduce since switch chip does not stop to open and close and the ripple of generation；Meanwhile
Controlling circuit of voltage regulation is set, is discontinuously boosted by controlling DC voltage booster circuit in power up phase, to avoid the filtered electrical of access
The phenomenon that appearance needs to charge, supply voltage is caused excessively to be dragged down.
Detailed description of the invention
Fig. 1 is the anti-smear circuit connection diagram of the existing liquid crystal display using black insertion technology；
Fig. 2 is the composed structure schematic diagram of the anti-smear circuit of liquid crystal display provided by one embodiment of the present invention；
Fig. 3 is the anti-smear circuit connection diagram of liquid crystal display added after filter capacitor；
Fig. 4 is the circuit connection diagram for increasing ON-OFF control circuit in the embodiment shown in fig. 3；
Fig. 5 is to power on voltage waveform view when controlling DC voltage booster circuit using common high level；
Fig. 6 is to power on voltage waveform view when controlling DC voltage booster circuit using pwm signal.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention
Formula is described in further detail.
The anti-smear technology of liquid crystal display in the prior art is introduced first.Fig. 1 shows a kind of existing liquid using black insertion technology
Crystalline substance shields the schematic diagram of anti-smear circuit, as shown in Fig. 2, DC voltage booster circuit includes DC boosting chip and matched resistance, electricity
Sense and diode etc..Between output end and LED (light emitting diode) back light of DC voltage booster circuit, it is provided with switch core
Piece (model TL4242), switch chip are adjusted at PWM (Pulse Width Modulation, Chinese: pulse width modulation)
Under the control of optical signal, stop output voltage when liquid crystal overturning, to extinguish back light, to avoid turning over due to liquid crystal
It changes the line of production raw motion blur phenomenon.
However in practical applications, due to the presence of black insertion technology, back light is only opened very in short-term within the display cycle
Between, such as 1/10th periods, screen intensity is caused to reduce.In order to solve the problems, such as that screen intensity is lower, need light-emitting diodes
The current value of pipe is adjusted so as to larger (100mA-200mA), in the case, when switch chip constantly opens and closes, due to
The response speed of DC boosting chip is insufficient, can generate huge ripple on the output voltage.This ripple can pass through diode
And in inductive feedback to supply voltage VBUS, cause the huge fluctuation of supply voltage VBUS.For example, in an actual circuit
In, the frequency of PWM dim signal is 70Hz (identical as screen refresh frequency), along with DC voltage booster circuit, to supply voltage
It is low that VBUS (about 5V) has fed back peak-to-peak value supply voltage VBUS at the ripple of 1.36V, 70Hz, the minimum point of the ripple
In 4V, this will lead to other device operation irregularities of supply voltage VBUS power supply.
In order to solve the problems, such as that the anti-smear circuit power voltage of above-mentioned liquid crystal display is disturbed, the liquid crystal display of the application is proposed
Anti- smear circuit.
The technical concept of the application is: based on the scheme for eliminating smear using switch chip closing back light, straight
Filter capacitor is arranged in the output end for flowing booster circuit, to reduce since switch chip does not stop to open and close and the ripple of generation,
Stablize the supply voltage of normal work stage；Meanwhile controlling circuit of voltage regulation is set, by controlling DC boosting electricity in power up phase
Road is discontinuously boosted, and to avoid the filter capacitor quick charge of access, avoiding generating biggish charging current causes supply voltage
It is excessively dragged down, stablizes the supply voltage of power up phase.
Fig. 2 is the composed structure schematic diagram of the anti-smear circuit of liquid crystal display provided by one embodiment of the present invention, such as Fig. 2 institute
It states, a kind of anti-smear circuit of liquid crystal display, comprising: supply voltage is increased as the DC voltage booster circuit of back light operating voltage,
And the switch chip to flicker for controlling back light, the output end of DC voltage booster circuit are connected to backlight light through switch chip
Source, switch chip extinguish back light when liquid crystal is overturn to eliminate smear.
Meanwhile the anti-smear circuit of liquid crystal display of embodiment illustrated in fig. 2 further include: be connected to the output end of DC voltage booster circuit
Filter capacitor between ground, and the controlling circuit of voltage regulation for stabilized supply voltage；Controlling circuit of voltage regulation is connected to direct current
Booster circuit controls DC voltage booster circuit and discontinuously increases supply voltage for back in the anti-smear circuit power up phase of liquid crystal display
The operating voltage of radiant.
Refering to what is shown in Fig. 3, filter capacitor C1 is arranged by the output end in DC voltage booster circuit, it can be by filter capacitor
The energy storage of C1 acts on, and provides supplemental current when switch chip closure, it is insufficient to make up DC voltage booster circuit response speed
Problem reduces the adverse effect to supply voltage to reduce the ripple generated when the work of anti-smear circuit black plug.
In addition, it is contemplated that the filter capacitor of access needs to charge in power up phase, supply voltage, and filtered electrical can be dragged down
The capacitance of appearance drags down more greatly effect and is more obvious, and may result in that supply voltage is too low or even trigger circuit protection, leads to anti-drag
Shadow circuit can not normally work on power.Therefore, the application anti-smear circuit embodiments shown in Fig. 2 are additionally provided with pressure stabilizing control electricity
Road, controlling circuit of voltage regulation discontinuously boosts in power up phase control DC voltage booster circuit, so as to avoid the filtered electrical of large capacity
Hold quick charge and generate super-high-current, avoids supply voltage and excessively dragged down.
In one embodiment of the application, refering to what is shown in Fig. 4, controlling circuit of voltage regulation include: be connected to supply voltage and
ON-OFF control circuit between DC voltage booster circuit；ON-OFF control circuit acquires the voltage value of supply voltage, when supply voltage
When voltage value is lower than the first predeterminated voltage, the connection of supply voltage and DC voltage booster circuit is disconnected, when the voltage value of supply voltage
When higher than the second predeterminated voltage, restore the connection of supply voltage and DC voltage booster circuit.Wherein, the first predeterminated voltage and second pre-
If voltage is arranged according to concrete conditions such as the size of current of supply voltage and anti-smear circuit.When supply voltage is reduced to first in advance
If when voltage, by the connection of cut off the power voltage and DC voltage booster circuit, interrupting charging current and dragging down work to supply voltage
With so that supply voltage is gradually recovered raising；When supply voltage is restored to the second predeterminated voltage, reclose supply voltage with
DC voltage booster circuit continues as the filter capacitor charging of large capacity.
Specifically, refering to what is shown in Fig. 4, ON-OFF control circuit include sequentially connected pressure sampling circuit (including partial pressure electricity
Resistance R4 and R5), comparator U1, switching regulator controller U2 and switching tube Q1, switching tube Q1 be connected on supply voltage VBUS and direct current
Between booster circuit.
The voltage value of pressure sampling circuit partial pressure acquisition supply voltage VBUS, the output end of pressure sampling circuit divide
Resistance R4 connects an input terminal of comparator U1 with the connecting pin of R5.
Comparator U1 by the collected voltage value of pressure sampling circuit compared with the first predeterminated voltage and the second predeterminated voltage,
The output end connection switch tube controller U2 of comparator U1.
Switching regulator controller U2 is disconnected or is connected according to the comparison result control switch pipe Q1 of comparator U1, to disconnect or connect
Logical supply voltage and DC voltage booster circuit.
In circuit shown in Fig. 4, the first predeterminated voltage is lower than the second predeterminated voltage, and comparator U1 is hysteresis loop comparator, with
The process of comparison voltage is avoided to shake.
In conjunction with Fig. 2-Fig. 4, the working principle of the above embodiments of the present application is introduced:
With reference to Fig. 3, the application connects a filter capacitor C1 between the output end and ground of DC voltage booster circuit.Preferably,
The filter capacitor is electrolytic capacitor, has biggish capacitance, to be high current high brightness in switch chip closure
LED backlight light source provides enough electric currents, such as in Fig. 3, and filter capacitor C1 is the alminium electrolytic condenser of 470uF/50V.The filtering
Capacitor C1 can be when being closed switch chip moment, and the charge stored by itself supplements rapidly to the LED use of rear end,
The situation for compensating for DC voltage booster circuit response speed deficiency, measures after optimization, and the ripple on Fig. 3 supply voltage VBUS has controlled
Within 200mV, to guarantee that supply voltage VBUS maintains to stablize, guarantee other electricity consumption proper device operations.
Meanwhile after accessing filter capacitor C1, since the capacitance of filter capacitor C1 is larger, incited somebody to action in DC voltage booster circuit
During supply voltage VBUS (about 5V) boosts to the operating voltage (about 30V) of LED, according to capacitor both ends current formulaIt is found that the electric current Ic for flowing through filter capacitor C1 is a sizable value, this can drag down supply voltage VBUS, seriously
When even can be pulled low to triggering power protection, cannot normally work on power so as to cause circuit.
In this regard, by adjusting the resistance value of R4 and R5, can achieve when VBUS electricity by ON-OFF control circuit shown in Fig. 4
It forces down when the first predeterminated voltage, comparator U1 output is low, to control Q1 (N-MOS pipe) disconnection, after disconnection, VBUS electric current
The DC boosting chip that rear end can not be supplied to uses, and boosting stops, and fluctuates reduce on VBUS at this time, and voltage of VBUS value increases,
When being increased to the second predeterminated voltage, the second default electricity is higher than by the partial pressure value that divider resistance R4 and R5 enter comparator U1
Pressure, comparator U1 export high level, to control Q1 unlatching, drain electrode (D) and source level (S) are connected, and VBUS continues to back-end circuit
Power supply.By the switch and closure of Q1, realizes and discontinuously power to back end DC booster circuit, to extend DC boosting
The pressure rising time of circuit ensure that voltage of VBUS is in always on a safe voltage value, ensure that the normal work of VBUS.
In another embodiment of the application, controlling circuit of voltage regulation includes: signal output apparatus, signal output apparatus it is defeated
Outlet is connected to the enable end of DC voltage booster circuit, for example, the enable end EN of DC boosting chip shown in FIG. 1.In liquid crystal display
The power up phase of anti-smear circuit, signal output apparatus control DC voltage booster circuit interruption by output pulse width modulated signal
Boosting.
After the completion of the anti-smear circuit of liquid crystal display powers on, signal output apparatus continues to output stable voltage control signal,
Control DC voltage booster circuit continuous work.
As shown in figure 5, in general, the enable end EN of DC boosting chip makes chip quilt by changing to high level from low level
It is enabled to start to work normally, in output end vo ut output system required voltage.But when output is terminated with very big capacitor,
For example 470uF alminium electrolytic condenser C1 used in Fig. 3 will lead to immediate current very since the voltage at capacitor both ends cannot be mutated
Greatly, such as 2-3A is even higher, and it is big to will lead to mains voltage ripple in this way, leads to system cisco unity malfunction, powering at this time
Voltage waveform can be with reference to shown in Fig. 5.
And since transient current is excessive, when supply voltage is provided by the USB port of PC or notebook, PC
Or the USB of notebook will appear surge of electric power, cause USB can not normal use, if supply voltage be battery provide if,
Since immediate current is excessive, battery automatic protection will lead to, stop power supply.
It is as above in order to solve the problems, such as, as shown in fig. 6, in the present embodiment, by signal output apparatus, by DC boosting electricity
The enable end EN signal on road becomes: power up phase EN signal use PWM control mode, when rear end filter capacitor charging expired with
Afterwards, PWM is changed to high level.There is similarly working principle with embodiment illustrated in fig. 4, due to the boost process quilt of DC voltage booster circuit
Discontinuously realize, so as to avoid excessive charging current is generated, avoid supply voltage and excessively dragged down, at this time power on electricity
Corrugating is as shown in Figure 6.
On the basis of above-described embodiment of the application, signal output apparatus is by adjusting the pulse width modulation letter exported
Number frequency and/or duty ratio, the boost process of DC voltage booster circuit is adjusted, according to the size of the needs of system and capacitor
It is adjusted.
Above-mentioned signal output apparatus is for example using microcontroller implementation.
In addition, the liquid crystal display is provided with the anti-smear of liquid crystal display any one of as above disclosed herein as well is a kind of liquid crystal display
Circuit.
The above, the only specific embodiment of the application, under the above-mentioned introduction of the application, those skilled in the art
Other improvement or deformation can be carried out on the basis of the above embodiments.It will be understood by those skilled in the art that above-mentioned tool
The purpose of the application is only preferably explained in body description, and the protection scope of the application should be subject to the protection scope in claims.
Claims (10)
1. a kind of anti-smear circuit of liquid crystal display, comprising: DC voltage booster circuit and switch chip, the DC voltage booster circuit it is defeated
Outlet is connected to the back light through the switch chip, and the switch chip extinguishes liquid crystal display when liquid crystal is overturn
Back light is to eliminate smear, which is characterized in that
The anti-smear circuit of liquid crystal display further include: the filtered electrical being connected between the output end and ground of the DC voltage booster circuit
Hold, and for the controlling circuit of voltage regulation of stabilized supply voltage；The controlling circuit of voltage regulation is connected to the DC voltage booster circuit,
In the power up phase of the anti-smear circuit of the liquid crystal display, controls the DC voltage booster circuit and discontinuously increase supply voltage for back
The operating voltage of radiant.
2. the anti-smear circuit of liquid crystal display according to claim 1, which is characterized in that
The filter capacitor is electrolytic capacitor.
3. the anti-smear circuit of liquid crystal display according to claim 1 or 2, which is characterized in that
The controlling circuit of voltage regulation includes: the switch control electricity being connected between the supply voltage and the DC voltage booster circuit
Road；The ON-OFF control circuit acquires the voltage value of the supply voltage, when the voltage value of the supply voltage is pre- lower than first
If when voltage, disconnecting the connection of the supply voltage Yu the DC voltage booster circuit, when the voltage value of the supply voltage is higher than
When the second predeterminated voltage, restore the connection of the supply voltage Yu the DC voltage booster circuit.
4. the anti-smear circuit of liquid crystal display according to claim 3, which is characterized in that
The ON-OFF control circuit includes pressure sampling circuit, comparator, switching regulator controller and switching tube, the switching tube string
It is associated between the supply voltage and the DC voltage booster circuit；
The output end of the pressure sampling circuit connects the input terminal of the comparator；
The output end of the comparator connects the switching regulator controller；
The switching regulator controller controls the switching tube according to the comparison result of the comparator and disconnects or be connected.
5. the anti-smear circuit of liquid crystal display according to claim 4, which is characterized in that
The comparator is hysteresis loop comparator.
6. the anti-smear circuit of liquid crystal display according to claim 1 or 2, which is characterized in that
The controlling circuit of voltage regulation includes: signal output apparatus, and the output end of the signal output apparatus is connected to DC boosting
The enable end of circuit, in the power up phase of the anti-smear circuit of the liquid crystal display, the signal output apparatus output pulse width tune
Signal processed controls the DC voltage booster circuit interruption boosting.
7. the anti-smear circuit of liquid crystal display according to claim 6, which is characterized in that
The signal output apparatus adjusts institute by adjusting the frequency and/or duty ratio of the pulse width modulating signal exported
State the boost process of DC voltage booster circuit.
8. the anti-smear circuit of liquid crystal display according to claim 6, which is characterized in that
After the completion of the anti-smear circuit of the liquid crystal display powers on, the signal output apparatus exports stable voltage control signal,
Control the DC voltage booster circuit continuous work.
9. the anti-smear circuit of liquid crystal display according to claim 6, which is characterized in that
The signal output apparatus includes: microcontroller.
10. a kind of liquid crystal display, which is characterized in that the liquid crystal display is provided with -9 described in any item liquid crystal according to claim 1
Shield anti-smear circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810852460.5A CN109003585B (en) | 2018-07-27 | 2018-07-27 | Liquid crystal screen anti-smear circuit and liquid crystal screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810852460.5A CN109003585B (en) | 2018-07-27 | 2018-07-27 | Liquid crystal screen anti-smear circuit and liquid crystal screen |
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| Publication Number | Publication Date |
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| CN109003585A true CN109003585A (en) | 2018-12-14 |
| CN109003585B CN109003585B (en) | 2020-11-20 |
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| CN103325345A (en) * | 2012-03-23 | 2013-09-25 | 索尼公司 | Light emitting element drive device, light emitting element drive method, and display apparatus |
| US20150257220A1 (en) * | 2011-01-21 | 2015-09-10 | Sony Corporation | Light emitting element driving circuit, light emitting device, display device, and light emission controlling method |
| CN106981272A (en) * | 2017-05-26 | 2017-07-25 | 京东方科技集团股份有限公司 | Backlight driving method, device and the display panel of display panel |
| CN207516649U (en) * | 2017-12-15 | 2018-06-19 | 潍坊歌尔电子有限公司 | Head-mounted display |
-
2018
- 2018-07-27 CN CN201810852460.5A patent/CN109003585B/en active Active
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|---|---|---|---|---|
| US20020145577A1 (en) * | 2001-04-10 | 2002-10-10 | Winbond Electronics Corp. | Control circuit for preventing residual image in a liquid crystal display |
| CN101315748A (en) * | 2007-05-31 | 2008-12-03 | 中华映管股份有限公司 | Driving mechanism and method of display equipment |
| US20150257220A1 (en) * | 2011-01-21 | 2015-09-10 | Sony Corporation | Light emitting element driving circuit, light emitting device, display device, and light emission controlling method |
| CN103325345A (en) * | 2012-03-23 | 2013-09-25 | 索尼公司 | Light emitting element drive device, light emitting element drive method, and display apparatus |
| CN106981272A (en) * | 2017-05-26 | 2017-07-25 | 京东方科技集团股份有限公司 | Backlight driving method, device and the display panel of display panel |
| CN207516649U (en) * | 2017-12-15 | 2018-06-19 | 潍坊歌尔电子有限公司 | Head-mounted display |
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| CN109003585B (en) | 2020-11-20 |
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