CN206877668U - A kind of brightness of display screen regulation circuit and mobile terminal - Google Patents
A kind of brightness of display screen regulation circuit and mobile terminal Download PDFInfo
- Publication number
- CN206877668U CN206877668U CN201720598756.XU CN201720598756U CN206877668U CN 206877668 U CN206877668 U CN 206877668U CN 201720598756 U CN201720598756 U CN 201720598756U CN 206877668 U CN206877668 U CN 206877668U
- Authority
- CN
- China
- Prior art keywords
- display screen
- brightness
- circuit
- switch
- switch pipe
- 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.)
- Active
Links
Landscapes
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The utility model provides a kind of brightness of display screen regulation circuit and mobile terminal, wherein, brightness of display screen regulation circuit includes：Switch, at least one image element circuit and drive circuit；The image element circuit connects with the switch；The drive circuit connects with the switch；When performing brightness of display screen regulation, drive circuit is according to predetermined duty cycle controlling switch on or off.The display screen provided by the utility model embodiment adjusts circuit and mobile terminal, display screen can be made to differentiate more intensity gray scales, reduce the phenomenon of the obvious step of brightness, the flatness of brightness of display screen regulation change in process when increasing low-light level, the problem of screen flash can be optimized, lift Consumer's Experience.
Description
Technical field
Electronic technology field is the utility model is related to, particularly relates to a kind of brightness of display screen regulation circuit and movement eventually
End.
Background technology
AMOLED (Active-matrix organic light emitting diode, active matrix organic light-emitting two
Polar body) display screen is due to characteristics such as self-luminous, compared to TFT-LCD backlight screens in color, colour gamut, visible angle and power consumption etc.
Aspect has obvious advantage, therefore the main direction of development of the Display Technique as mobile terminal.Current AMOLED is shown
Screen is during brightness regulation, by adjusting OLED (Organic Light-Emitting Diode, Organic Light Emitting Diode)
Driving current, i.e., the display information of output is adjusted to reach the brightness regulation of display screen.Current AMOLED is shown
The regulation surplus that screen is only 8, adjustable GTG only have 255 grades.
Because AMOLED display screens only have the regulation surplus of 255 GTGs, and the adjustable extent of display brightness has
500lux or so, therefore, when AMOLED display screens carry out brightness regulation, a GTG is often adjusted, display brightness has about
2lux step.So, it is right because the brightness of human eye has just distinguished that subtractive is small when AMOLED display screens are in low-light level intervals control
The sensitive visual response of comparison is had in the brightness change of display screen, generally higher than 1lux brightness change human eye can substantially be felt
Know, this causes display screen, and in low-light level intervals control, user is easy to experience the phenomenon of screen flicker, is brought to user
Not good usage experience.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of brightness of display screen regulation circuit and mobile terminal, with
Solve the problems, such as that screen flicker occurs in low-light level intervals control in existing AMOLED display screens.
On the one hand, the utility model embodiment provides a kind of brightness of display screen regulation circuit, including：
Switch, at least one image element circuit and drive circuit；
Image element circuit connects with switch；
Drive circuit connects with switch；
When performing brightness of display screen regulation, drive circuit is according to predetermined duty cycle controlling switch on or off.
On the other hand, the utility model embodiment also provides a kind of mobile terminal, including the regulation of above-mentioned brightness of display screen
Circuit.
In the utility model embodiment, brightness of display screen adjusts circuit and is performing brightness of display screen regulation by drive circuit
When, according to predetermined duty cycle controlling switch on or off, display screen is differentiated more intensity gray scales, it is obvious to reduce brightness
The phenomenon of step, the flatness of brightness of display screen regulation change in process, the problem of screen flash can be optimized, lifting when increasing low-light level
Consumer's Experience.
Brief description of the drawings
In order to illustrate more clearly of the technical scheme of the utility model embodiment, the utility model embodiment will be retouched below
The required accompanying drawing used is briefly described in stating, it should be apparent that, drawings in the following description are only the utility model
Some embodiments, for those of ordinary skill in the art, without having to pay creative labor, can be with root
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 represents the structural representation for the brightness of display screen regulation circuit that the utility model embodiment provides；
Fig. 2 represents the equivalent circuit diagram of the image element circuit for the brightness of display screen regulation circuit that the utility model embodiment provides
One of；
Fig. 3 represents the equivalent circuit diagram of the image element circuit for the brightness of display screen regulation circuit that the utility model embodiment provides
Two；
Fig. 4 represents one of equivalent circuit diagram of brightness of display screen regulation circuit that the utility model embodiment provides；
Fig. 5 represents the two of the equivalent circuit diagram for the brightness of display screen regulation circuit that the utility model embodiment provides；
Fig. 6 represents one of equivalent circuit diagram of brightness of display screen regulation circuit that the example of the utility model one provides；
Fig. 7 represents the two of the equivalent circuit diagram for the brightness of display screen regulation circuit that the example of the utility model one provides；
Fig. 8 is represented between the adjacent GTG when brightness of display screen regulation circuit that the utility model embodiment provides uses
Excessively grey exponent number distribution bar chart.
Embodiment
To make the technical problems to be solved in the utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing
And specific embodiment is described in detail.
Fig. 1 is referred to, it is illustrated that the structure for the brightness of display screen regulation circuit that the utility model embodiment provides is shown
It is intended to.
The utility model embodiment provides a kind of brightness of display screen regulation circuit, including：Switch 11, at least one pixel electricity
Road 12 and drive circuit 13.
Wherein, image element circuit 12 is connected with switch 11；Drive circuit 13 is connected with switch 11；Adjusted performing brightness of display screen
During section, drive circuit 13 is according to the on or off of predetermined duty cycle controlling switch 11.
In the present embodiment, display screen is AMOLED display screens, and the brightness of display screen adjusts supply lines of the circuit in display screen
Increase switch 11 on the common port on road, when performing brightness of display screen regulation, by drive circuit 13 according to predetermined duty cycle control
System 11 on or off of switch, the dutycycle of the direct driving current of image element circuit 12 is adjusted, adjust the light on and off switching of display screen；
When not performing brightness regulation in display screen, the controlling switch 11 of drive circuit 13 turns on.
Wherein, the utility model embodiment pertains only to the improvement of annexation, involved drive circuit in the present embodiment
13 use prior art, and its possessed function is not improved.
In the present embodiment, by drive circuit 13 when performing brightness of display screen regulation, opened according to predetermined duty cycle control
11 on or off are closed, display screen is differentiated more intensity gray scales, reduce the phenomenon of the obvious step of brightness, increase low-light level
When brightness of display screen regulation change in process flatness.Wherein, it is slow using people's ophthalmic reaction due to differentiating more intensity gray scales
Stagnant characteristic, the problem of screen flash can be optimized, lift Consumer's Experience.
In an embodiment, brightness of display screen regulation circuit, image element circuit 12 is connected with the first power supply 14.The present embodiment
In, the first power supply 14 can with positive supply ELVDD, or, the first power supply 14 can be negative supply ELVSS.
In an embodiment, brightness of display screen regulation circuit, switch 11 is also connected with second source 15.The present embodiment
In, when the first power supply 14 is positive supply ELVDD, then second source 15 is negative supply ELVSS；When the first power supply 14 is negative supply
During ELVSS, then second source 15 is positive supply ELVDD.Here, first power supply 14 and second source 15 form image element circuit 12
Luminescent device driving power, provide electric energy to light luminescent device.
Fig. 1 is referred to, in an embodiment, brightness of display screen regulation circuit, switchs 11 as first switch pipe T3, first
First pole of switch transistor T 3 is connected with image element circuit 12, and first switch pipe T3 the second pole is connected with second source 15, and first opens
The grid for closing pipe T3 is connected with drive circuit 13.In the present embodiment, first switch pipe T3 can be thin film transistor (TFT), if this first
The extremely source electrode of the first of switch transistor T 3, then the second of first switch pipe T3 extremely drain；If the first of first switch pipe T3 extremely
Drain, then the extremely source electrode of the second of first switch pipe T3.
Fig. 2 and Fig. 3 are referred to, in some embodiments of the utility model, brightness of display screen regulation circuit, pixel electricity
Road 12 includes：Second switch pipe T1, the 3rd switch transistor T 2, electric capacity Cs and luminescent device.In this example it is shown that screen is
AMOLED display screens, luminescent device can be OLED, and second switch pipe T1 and the 3rd switch transistor T 2 can be thin film transistor (TFT).
Fig. 4 and Fig. 5 are referred to, second switch pipe T1 grid is connected to peripheral hardware control line Scanline, second switch pipe
T1 source electrode is connected to peripheral hardware signal wire Data, and second switch pipe T1 drain electrode is connected with the grid of the 3rd switch transistor T 2, and with
Electric capacity Cs first end connection；Wherein, peripheral hardware control line Scanline is used to input scanning voltage, control second switch pipe T1's
On or off, peripheral hardware signal wire Data are used for input data voltage, size of the control into the driving current of luminescent device；The
First pole of three switch transistor Ts 2 is connected with electric capacity Cs the second end, and is connected to the first power supply 14, and the second of the 3rd switch transistor T 2
Pole and the first pole of luminescent device connect；Second pole of luminescent device is connected with first switch pipe T3 the first pole.The present embodiment
In, the circuit structure of the image element circuit 12 can be that source electrode follows structure, or, the circuit structure of the image element circuit 12 can be
Constant current source structure.
In the present embodiment, peripheral hardware control line Scanline can be scan line, and scanning voltage is provided to second switch pipe T1,
Control second switch pipe T1 on or off；Peripheral hardware signal wire Data can be data wire, to the 3rd switch transistor T 2 and electric capacity
Cs provides data voltage, size of the control into the driving current of luminescent device.When display screen is shown, peripheral hardware control line
Scanline input scanning voltage control second switch pipe T1 conductings, peripheral hardware signal wire Data data voltage pass through second switch
Pipe T1 enters the grid and electric capacity Cs of the 3rd switch transistor T 2；When second switch pipe T1 closures, due to electric capacity Cs, the 3rd switching tube
T2 grid may continue to keep data voltage so that the 3rd switch transistor T 2 is in the conduction state, the first power supply 14 and the second electricity
The 3rd switch transistor T 2 that drives current through of the offer of source 15 enters luminescent device, and driving luminescent device lights.
Fig. 4 is referred to, in some embodiments, brightness of display screen regulation circuit, the circuit structure of the image element circuit 12
Structure is followed for source electrode, luminescent device can be OLED, and the first power supply 14 is positive supply ELVDD, and second source 15 is negative supply
ELVSS.The source electrode of 3rd switch transistor T 2 is connected with electric capacity Cs the second end, and is connected to the first power supply 14, the 3rd switch transistor T 2
Drain electrode and luminescent device positive pole connect；The negative pole of luminescent device is connected with first switch pipe T3 source electrode；First switch pipe
T3 drain electrode is connected to second source 15.
Fig. 5 is referred to, in some embodiments, brightness of display screen regulation circuit, the circuit structure of the image element circuit 12
For constant current source structure, luminescent device can be OLED, and the first power supply 14 is negative supply ELVSS, and second source 15 is positive supply
ELVDD.The drain electrode of 3rd switch transistor T 2 is connected with electric capacity Cs the second end, and is connected to the first power supply 14, the 3rd switch transistor T 2
Source electrode and luminescent device negative pole connect；The positive pole of luminescent device is connected with first switch pipe T3 drain electrode；First switch pipe
T3 source electrode is connected to second source 15.
In one example, brightness of display screen regulation circuit includes 3 image element circuits 12, the image element circuit 12 in the example
Circuit structure is that source electrode follows structure, and the equivalent circuit diagram of brightness of display screen regulation circuit is as shown in Figure 6.
In another example, brightness of display screen regulation circuit includes 3 image element circuits 12, the image element circuit 12 in the example
Circuit structure be constant current source structure, the equivalent circuit diagram of brightness of display screen regulation circuit is as shown in Figure 7.
In the present embodiment, when performing brightness of display screen regulation, drive circuit 13 control first switch pipe T3 conducting or
Disconnect, adjust the dutycycle of the direct driving current of luminescent device, realize the light on and off of luminescent device, reduce the obvious step of brightness
Phenomenon, the flatness of brightness of display screen regulation change in process when increasing low-light level.
Wherein, to better ensure that brightness of display screen adjusts flatness, screen flash problem is optimized, default dutycycle is adjustable
, it is corresponding with the present intensity GTG of display screen.That is, during brightness of display screen regulation is performed, preset
Dutycycle is continually changing.
In one embodiment, drive circuit 13 can be pulse width modulation (Pulse Width Modulation, PWM)
Drive circuit.In the present embodiment, drive circuit 13 is wide by pulse using the on or off of PWM waveform controlling switch 11
The dutycycle of direct driving current is adjusted degree modulation technique, and display screen can be made to differentiate more intensity gray scales, made
Brightness of display screen regulation process is smoother.
In the present embodiment, the dutycycle of PWM waveform caused by drive circuit 13 is adjustable in 0%~100% scope,
When display screen does not perform brightness regulation, the dutycycle of PWM waveform is 100%, it is ensured that switch 11 is in fully on shape
State, ensure the brightness constancy of display screen, reduce unnecessary switching loss.Wherein, determined according to the type of used switch
Fixed, PWM waveform can be often low or normal height.
In one embodiment, display screen is AMOLED display screens, and switch 11 is first switch pipe T3, and the first power supply 14 is just
Power supply ELVDD, second source 15 are negative supply ELVSS, and the circuit structure of image element circuit 12 follows structure, luminescent device for source electrode
For OLED, drive circuit 13 can be pulse width modulation drive circuit.In specifically used, it is assumed that the adjustable model of brightness of display screen
It is x (0 to enclose for 0~blux, current brightness of display screen GTG<x<256 and be integer), the final regulation intensity gray scale of display screen
For y (0<y<256 and be integer)；When performing brightness of display screen regulation, it is necessary to which display screen is adjusted to y GTGs from x GTGs.
In the AMOLED brightness of display screen regulative modes of prior art, have | (x-y) |=n excessive GTGs, adjacent GTG
Between only 1 excessive GTG, ignore actual control accuracy problem, the luminance difference between each GTG is substantially coincident
, luminance difference elementary cell is (b/n) lux.So, display screen user in low-light level intervals control is caused to be easy to experience
The phenomenon of screen flicker.
In the present embodiment, drive circuit 13 using PWM waveform control first switch pipe T3, wherein, PWM is adjustable series
For a.In the present embodiment, adjacent GTG x, x-1 (1<x<256) the minimum brightness-adjustable difference elementary cell between is：
Excessive grey exponent number is：
Can excessively GTG sum be:
In the one specifically used example of the present embodiment, so that the adjustable series a of PWM are 255 grades as an example, then between adjacent GTG
Excessively grey exponent number distribution is as shown in Figure 8.
It should be noted that when the adjustable series a of PWM are fixed, current brightness of display screen GTG x is smaller, minimum adjustable
Luminance difference is smaller.Because x parameter changes according to brightness automatically, therefore the adjustable series a of PWM are higher, got over for improving screen flash
It is helpful, that is to say, that the higher pwm control signal of selection digit, during brightness of display screen regulation, surplus is more sufficient.
Obviously, compared with prior art, the brightness of display screen regulation circuit of the present embodiment, can be such that display screen differentiates more
More intensity gray scales, reduce the phenomenon of the obvious step of brightness, brightness of display screen regulation change in process is smooth when increasing low-light level
Property.
In addition, in order to ensure more preferable regulating effect, the dutycycle of PWM waveform is adjustable in 0%~100% scope,
Following condition can be followed during the duty cycle adjustment of PWM waveform (dutycycle of PWM waveform is p)：
x*p≥(x-1)
Certainly, the condition is in order to ensure optimal effectiveness, is not necessary condition.In the case where brightness of display screen needs to continue
Adjust, but when above-mentioned condition is unsatisfactory for, then configuration processor：X=x-1, so, you can further to reduce dutycycle, so circulation,
Until drop to the intensity gray scale number of demand.After brightness of display screen regulation is stable, i.e., when display screen does not perform brightness regulation, at P
In 100% state, to ensure the brightness constancy of screen, unnecessary switching loss is reduced.
The brightness of display screen of the present embodiment adjusts circuit in addition to it can be applied to AMOLED display screens, can also be applicable
In the LCD backlight screen of 8 or 10, now, the 11 higher requirement of pressure-resistant needs is switched.
The brightness of display screen regulation circuit that the utility model embodiment provides, brightness of display screen is being performed by drive circuit
During regulation, according to predetermined duty cycle controlling switch on or off, display screen is differentiated more intensity gray scales, reduce brightness
The phenomenon of obvious step, the flatness of brightness of display screen regulation change in process when increasing low-light level, the problem of screen flash can be optimized,
Lift Consumer's Experience.
The utility model embodiment also provides a kind of mobile terminal, including above-mentioned brightness of display screen regulation circuit.
Wherein, because the structure of terminal body is prior art, the structural principle of brightness of display screen regulation circuit exists
It has been described in detail in above-described embodiment, therefore, the structure in the present embodiment for specific mobile terminal repeats no more.
In addition, the mobile terminal can be mobile phone, tablet personal computer, laptop computer (Laptop Computer), individual number
Word assistant (Personal Digital Assistant, PDA) or wearable device (Wearable Device) etc..
In the utility model embodiment, the mobile terminal with above-mentioned brightness of display screen regulation circuit, because display screen is bright
Degree regulation circuit makes display screen differentiate more intensity gray scales, reduces the phenomenon of the obvious step of brightness, shows when increasing low-light level
The flatness of display screen brightness regulation change in process, the problem of screen flash can be optimized, therefore can ensure that the use of mobile terminal can
By property and stability, user experience is lifted.
It should be understood that in the description of specification, reference term " embodiment ", " one embodiment " or " some realities for mentioning
Apply example " mean that the special characteristic relevant with embodiment, structure or characteristic are included at least one embodiment of the present utility model
Or in example.Therefore, " in one embodiment " that occurs everywhere in entire disclosure, " in one embodiment " or " at some
In embodiment " not necessarily refer to identical embodiment.In addition, described in an accompanying drawing of the present utility model or a kind of embodiment
Element, structure or feature can appoint with the element, structure or the feature that are shown in one or more of the other accompanying drawing or embodiment
The suitable mode of meaning is combined.
In addition, in one or more embodiments herein, such as " comprising " or "comprising" are used to illustrate to exist to enumerate
Feature or component, but do not exclude the presence of one or more of the other feature enumerated or one or more of the other component.
In the utility model, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " Gu
Calmly ", the term such as " setting " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integrally；
Can be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected by intermediary, can be with
It is connection or the interaction relationship of two elements of two element internals.For the ordinary skill in the art, may be used
To understand concrete meaning of the above-mentioned term in the utility model as the case may be.
In addition, in utility model embodiment, such as first and second or the like relational terms are used merely to one
Entity or operation make a distinction with another entity or operation, and not necessarily require or imply between these entities or operation
Any this actual relation or order be present.
Described above is preferred embodiment of the present utility model, it is noted that for the ordinary skill of the art
For personnel, on the premise of principle described in the utility model is not departed from, some improvements and modifications can also be made, these improvement
The scope of protection of the utility model is also should be regarded as with retouching.
Claims (10)
1. a kind of brightness of display screen adjusts circuit, it is characterised in that including：
Switch, at least one image element circuit and drive circuit；
The image element circuit connects with the switch；
The drive circuit connects with the switch；
When performing brightness of display screen regulation, the drive circuit controls the switch conduction or shut-off according to predetermined duty cycle.
2. brightness of display screen according to claim 1 adjusts circuit, it is characterised in that the image element circuit and the first power supply
Connection.
3. brightness of display screen according to claim 2 adjusts circuit, it is characterised in that the switch also connects with second source
Connect.
4. brightness of display screen according to claim 3 adjusts circuit, it is characterised in that the switch is first switch pipe,
First pole of the first switch pipe is connected with the image element circuit, the second pole and the second source of the first switch pipe
Connection, the grid of the first switch pipe are connected with the drive circuit.
5. brightness of display screen according to claim 4 adjusts circuit, it is characterised in that the image element circuit includes：
Second switch pipe, the 3rd switching tube, electric capacity and luminescent device；
The grid of the second switch pipe is connected to peripheral hardware control line, and the source electrode of the second switch pipe is connected to peripheral hardware signal
Line, the drain electrode of the second switch pipe is connected with the grid of the 3rd switching tube, and is connected with the first end of the electric capacity；Its
In, the peripheral hardware control line is used to input scanning voltage, controls the on or off of the second switch pipe, the peripheral hardware signal
Line is used for input data voltage, and control enters the size of the driving current of the luminescent device；
First pole of the 3rd switching tube is connected with the second end of the electric capacity, and is connected to first power supply, and described
Second pole of three switching tubes is connected with the first pole of the luminescent device；
Second pole of the luminescent device is connected with the first pole of the first switch pipe.
6. brightness of display screen according to claim 5 adjusts circuit, it is characterised in that
The source electrode of 3rd switching tube is connected with the second end of the electric capacity, and is connected to first power supply, and the described 3rd
The drain electrode of switching tube is connected with the positive pole of the luminescent device；
The negative pole of the luminescent device is connected with the source electrode of the first switch pipe；
The drain electrode of the first switch pipe is connected to the second source.
7. brightness of display screen according to claim 5 adjusts circuit, it is characterised in that
The drain electrode of 3rd switching tube is connected with the second end of the electric capacity, and is connected to first power supply, and the described 3rd
The source electrode of switching tube is connected with the negative pole of the luminescent device；
The positive pole of the luminescent device is connected with the drain electrode of the first switch pipe；
The source electrode of the first switch pipe is connected to the second source.
8. brightness of display screen according to claim 1 adjusts circuit, it is characterised in that the drive circuit is pulse width
Modulation drive circuit.
9. a kind of mobile terminal, it is characterised in that adjust electricity including the brightness of display screen as described in any one of claim 1 to 8
Road.
10. mobile terminal according to claim 9, it is characterised in that the mobile terminal is mobile phone, tablet personal computer, knee
Laptop, personal digital assistant or wearable device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720598756.XU CN206877668U (en) | 2017-05-26 | 2017-05-26 | A kind of brightness of display screen regulation circuit and mobile terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720598756.XU CN206877668U (en) | 2017-05-26 | 2017-05-26 | A kind of brightness of display screen regulation circuit and mobile terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206877668U true CN206877668U (en) | 2018-01-12 |
Family
ID=61336914
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720598756.XU Active CN206877668U (en) | 2017-05-26 | 2017-05-26 | A kind of brightness of display screen regulation circuit and mobile terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206877668U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109697960A (en) * | 2019-02-27 | 2019-04-30 | 深圳吉迪思电子科技有限公司 | Pixel-driving circuit and driving method, display panel |
| WO2019183811A1 (en) * | 2018-03-27 | 2019-10-03 | 华为技术有限公司 | Screen brightness adjustment method and terminal |
| CN110444180A (en) * | 2019-02-12 | 2019-11-12 | 南京中电熊猫平板显示科技有限公司 | A kind of abnormity display device |
| CN113129809A (en) * | 2019-12-31 | 2021-07-16 | Tcl集团股份有限公司 | LED array driving method, display array driving device and terminal equipment |
| CN114241991A (en) * | 2021-12-29 | 2022-03-25 | 长沙惠科光电有限公司 | Light-emitting unit control circuit, method, array substrate and display panel |
-
2017
- 2017-05-26 CN CN201720598756.XU patent/CN206877668U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019183811A1 (en) * | 2018-03-27 | 2019-10-03 | 华为技术有限公司 | Screen brightness adjustment method and terminal |
| US11138928B2 (en) | 2018-03-27 | 2021-10-05 | Huawei Technologies Co., Ltd. | Screen brightness adjustment method and terminal |
| CN110444180A (en) * | 2019-02-12 | 2019-11-12 | 南京中电熊猫平板显示科技有限公司 | A kind of abnormity display device |
| CN109697960A (en) * | 2019-02-27 | 2019-04-30 | 深圳吉迪思电子科技有限公司 | Pixel-driving circuit and driving method, display panel |
| CN113129809A (en) * | 2019-12-31 | 2021-07-16 | Tcl集团股份有限公司 | LED array driving method, display array driving device and terminal equipment |
| CN113129809B (en) * | 2019-12-31 | 2022-07-05 | Tcl科技集团股份有限公司 | LED array driving method, display array driving device and terminal equipment |
| CN114241991A (en) * | 2021-12-29 | 2022-03-25 | 长沙惠科光电有限公司 | Light-emitting unit control circuit, method, array substrate and display panel |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206877668U (en) | A kind of brightness of display screen regulation circuit and mobile terminal | |
| TWI404005B (en) | Photosensor and display device including photosensor | |
| CN102136252B (en) | Backlight assembly and display apparatus having the same | |
| US9495896B2 (en) | Liquid crystal display apparatus with brightness/luminance holding ratio compensation and a driving method thereof | |
| CN108538260A (en) | Image display processing method and device, display device and storage medium | |
| US8654051B2 (en) | Liquid crystal display device and method of driving the same | |
| CN109272940A (en) | Pixel-driving circuit and its driving method, display base plate | |
| US9984646B2 (en) | Driving circuit for display panel | |
| TW200525473A (en) | Driver for driving a display device | |
| CN209000515U (en) | Top rake circuit and display device | |
| US20150116195A1 (en) | Liquid crystal display device, electronic device including the same, and method for driving liquid crystal display device | |
| CN107025888A (en) | Driving method and the drive device of correlation for display device | |
| CN113253527B (en) | Display device and electronic device | |
| TWI449016B (en) | Pixel driving circuit, driving method thereof and display panel | |
| CN103943086A (en) | Analog voltage source circuit and display device | |
| CN101282608A (en) | Lamp driving apparatus for liquid crystal display device | |
| CN108231027B (en) | Low-power-consumption liquid crystal display device | |
| TWI404010B (en) | Source driver of a display, operational amplifier, and method for controlling the operational amplifier thereof | |
| KR102070365B1 (en) | Liquid crystal display device and method for driving the same | |
| CN104318910A (en) | Backlight module brightness adjusting method and related device | |
| CN203150082U (en) | Photosensitive controller for drive control for display device, and display device | |
| US7292211B2 (en) | Liquid crystal display and driving circuit thereof | |
| CN105243990A (en) | Driving circuit and automatic light modulation method for OLED display screen | |
| CN107705755A (en) | A kind of pixel-driving circuit, driving method and display panel | |
| CN102820008B (en) | Display control circuit and method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |