CN108806637A - Display device and its display methods - Google Patents
Display device and its display methods Download PDFInfo
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- CN108806637A CN108806637A CN201710310559.8A CN201710310559A CN108806637A CN 108806637 A CN108806637 A CN 108806637A CN 201710310559 A CN201710310559 A CN 201710310559A CN 108806637 A CN108806637 A CN 108806637A
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- display device
- display
- grayscale
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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
- G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
- G09G5/02—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the way in which colour is displayed
- G09G5/024—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the way in which colour is displayed using colour registers, e.g. to control background, foreground, surface filling
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- Engineering & Computer Science (AREA)
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- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
A kind of display methods of display device, including detecting the enabling signal of display device, when the display grayscale for detecting enabling signal and display device is recorded as the grayscale value of second value, first control signal is exported to display device, started with the grayscale value of the first value with responding first control signal by display device, and after first control signal output, second control signal is exported to display device, to be shown with the grayscale value of second value in response to second control signal by display device.Utilize the display device and its display methods of the present invention, when display device is activated from off-mode and is intended to be shown with lower grayscale value, by exporting the control signal to another grayscale value that should be greater than this lower grayscale value, export again corresponding to this lower grayscale value another control signal drive display device, can not increase additional hardware cost mode make display device reply dispaly state process be not in scintillation.
Description
【Technical field】
The present invention relates to display technology, especially a kind of display device and its display methods.
【Background technology】
In general, the display grayscale of display device can be set according to application environment, user's demand etc., so that aobvious
Showing device can carry out the display of different brightness.Currently, display device with height when showing that grayscale is shown, highest shows bright
Degree can reach 1000nits or more, and when being shown with low display grayscale, minimum display brightness can reach 2.6nits.
With epoch evolution, user is more and more harsh for the demand of the display brightness of display device.For example, army
Alert unit and user's demand of Information Institutions operable display device when night operations, and not because the display of display device is bright
It spends high and exposes itself position, thus be further desirable to that the minimum display brightness of display device can be reduced.
In order to reduce the minimum display brightness of display device, to set the driving current of the display unit in display device
Pulse width modulation circuit need to have also plus fine exponent number so that the minimum drive current of display unit can be by equal ratio
It reduces.However, when driving current become it is too small when, be not easy to drive display element instead, and then by display device in relatively low ash
Rank value will appear scintillation when being activated display.
【Invention content】
In one embodiment, a kind of display methods of display device, it includes the enabling signal of detecting display device, when detecing
When being recorded as the first value of display grayscale for measuring enabling signal and display device, exports first control signal to display device,
To be started with the display grayscale of second value in response to first control signal by display device, and in first control signal output
Afterwards, second control signal is exported to display device, to be switched to the first value in response to second control signal by display device
Display grayscale shown.
In one embodiment, a kind of display device, it includes display unit and processing units.Processing unit detecting display
The enabling signal of unit.In when being recorded as the first value of display grayscale for detecting enabling signal and display unit, processing unit
First control signal is exported to display unit, with by display unit in response to first control signal with the display grayscale of second value
Start.After first control signal output, processing unit exports second control signal to display unit, to be rung by display unit
It should switch in second control signal and be shown with the display grayscale of the first value.Wherein, second value is more than the first value.
In conclusion display device according to the ... of the embodiment of the present invention and its display methods, in display device from off-mode
It being activated and is intended to when being shown with lower grayscale value, first passing through another grayscale exported to should be greater than this lower grayscale value
The control signal of value, another control signal exported again later corresponding to this lower grayscale value drive display device, can
Do not increase additional hardware cost mode make display device reply dispaly state process be not in scintillation.
The detailed features and advantage of the narration present invention in detail in embodiments below, content are enough to make any to be familiar with phase
It closes those skilled in the art and understands the technology contents of the present invention and simultaneously implement according to this, and content disclosed by this specification, apply for a patent model
It encloses and schema, it is any to be familiar with relevant art and be readily understood upon the relevant purpose of the present invention and advantage.
【Description of the drawings】
Fig. 1 is the summary block schematic diagram of the display device of one embodiment of the invention.
Fig. 2 is the flow diagram of the display methods of the display device of one embodiment of the invention.
Fig. 3 is the flow diagram of the also new display grayscale record of one embodiment of the invention.
【Specific implementation mode】
Fig. 1 is the summary block schematic diagram of the display device of one embodiment of the invention.Referring to Fig. 1, display device 100 is wrapped
Containing display unit 110 and processing unit 120.Processing unit 120 is electrically connected to display unit 110.Processing unit 120 can root
Carry out control display unit 110 according to the display methods of any embodiment of the present invention to be acted accordingly.
In some embodiments, display unit 110 can be LCD (liquid-crystal display) screen, LED
The display screens of (light emitting diode) display screens or other suitable types.In addition, processing unit 120 can be
SoC (system-on-chip) chip, central processing unit (CPU) or microcontroller (MCU) etc., but the present invention not as
Limit.
Fig. 2 is the flow diagram of the display methods of the display device of one embodiment of the invention.It please refers to Fig.1 and Fig. 2, place
Reason unit 120 can be used to detect enabling signal Se (step S11).In this, enabling signal Se starts to through the processing unit 120
The display unit 110 of display device 100, and display unit 110 is made display can be switched to from off-mode (no display picture)
State (has display picture).
In one embodiment, display device 100 also includes switch unit 131.It is single that switch unit 131 is electrically connected to processing
Member 120, and switch unit 131 can generate enabling signal Se to processing unit 120.In some embodiments, switch unit 131 can
For the mechanical switch of display device 100, and enabling signal Se can be user by directly pressing produced by mechanical switch
Electronic signal.
In another embodiment, display device 100 also includes Transmit-Receive Unit 132.132 electrically connected processing list of Transmit-Receive Unit
Member 120, and Transmit-Receive Unit 132 can be used to receive enabling signal Se, and the enabling signal Se received is transmitted to processing unit
120.For example, Transmit-Receive Unit 132 can receive the letter of the unlatching transmitted by external emitters (not shown) in a manner of wireless receiving and dispatching
Number Se.
In another embodiment, display device 100 also includes switch unit 131 and Transmit-Receive Unit 132.Switch unit 131
It is respectively and electrically connected to processing unit 120 with Transmit-Receive Unit 132, and switch unit 131 or can with any one in Transmit-Receive Unit 132
Enabling signal Se is exported to processing unit 120 according to aforementioned corresponded manner.
In some embodiments, Transmit-Receive Unit 132 can be infrared ray transceiving module, bluetooth transceiver module, Wi-Fi module
Deng, but the present invention is not limited only to this.
In this, the display unit 110 of display device 100 supports a variety of grayscale values.In one implements, display unit 110 can
Support 256 kinds, 512 kinds, the grayscale values such as 1024 kinds.In addition, before display unit 110 enters off-mode, 120 meeting of processing unit
The current grayscale value of display unit 110 is stored into display grayscale record R1.Also, processing unit 120 in detect start
The display unit 110 of display device 100 can be again started up after signal Se.
When processing unit 120 detects enabling signal Se, the display ash of display device 100 can be read in processing unit 120
Rank records R1 (step S12), and shows that grayscale records display unit when the obtained display devices 100 of R1 are shut down according to reading
110 grayscale value controls signal Sc (step S13) to generate.If processing single 120 does not detect enabling signal Se, processing
Unit 120 can repeat step S11 with a detecting frequency.
In some embodiments, display device 100 also include be electrically connected to the storage element 140 of processing unit 120, and
Storage element 140, which can be used to store, shows grayscale record R1.In some embodiments, storage element 140 can be by one or more
Storage element is realized.Each storage element can be non-volatility memorizer, such as the read only memory (ROM) or flash memory
(Flash memory) etc. or volatile storage, such as random access memory (RAM).
Wherein, a variety of grayscale values have the grayscale value of the grayscale value and a second value of one first value, and second value is less than
First value.In step s 13, when processing unit 120 judges that the display grayscale read from storage element 140 record R1 is
When grayscale value (that is, the grayscale value of display unit 110 is second value when shutdown) of second value, processing unit 120 can generate and defeated
Go out first control signal Sc1 to display unit 110, with by display unit 110 in response to first control signal Sc1 with the first value
Grayscale value start (step S14).Also, after first control signal Sc1 output, processing unit 120 also generates and exports the
Two control signal Sc2 are switched to the with may be in response to second control signal Sc2 by display unit 110 to display unit 110
The grayscale value of two-value is shown (step S15).
In other words, it detects enabling signal Se in processing unit 120 and judges that read display grayscale record R1 is
When the grayscale value of second value, processing unit 120 simultaneously indirect started and is carried out with the grayscale value of second value by display unit 110
It has been shown that, but first pass through after display unit 110 starts with the grayscale value of the first value more than second value, then by display unit 110
Grayscale value downgrade second value, to be shown with the connecting of the grayscale value of second value by display unit 110.In this way, display
Device 100 replys the process (that is, be activated from off-mode and shown with the grayscale value of second value again) of dispaly state
Scintillation will not occur.
In one embodiment, the execution interval between step S14 and step S15 may be very short, is for example, about separated by 0.5 second,
And display unit 110 according to before the startup of the grayscale value of the first value and showing that picture is not yet shown, is just switched to
Change and is shown with the grayscale value of second value.But the present invention is not so limited.In another embodiment, step S14 and step
Execution interval between S15 may slightly be grown, and for example, about be separated by 1 second, and so that display unit 110 can be in the grayscale value of the first value
After starting and showing the of short duration time, then switches to and shown with the grayscale value of second value.
In one embodiment, first control signal Sc1 and second control signal Sc2 can be pulse wave signal.Wherein, the first control
The pulse bandwidth of signal Sc1 processed is to be relevant to the first value, the pulse bandwidth of second control signal Sc2 be relevant to second value, and
The pulse bandwidth of first control signal Sc1 is more than the pulse bandwidth of second control signal Sc2.
In one embodiment, the grayscale value of lowest-order in the grayscale value that second value can be supported by display unit 110.And
And first value may be greater than the grayscale value of second value single order.For example, it is assumed that the grayscale value of display unit 110 shares 256 ranks
When, the grayscale value of second value above-mentioned can be the first rank grayscale value, and the grayscale value of the first value can be second-order grayscale value.But this
It invents not so limited.
In another embodiment, the grayscale value of specific exponent number in the grayscale value that the first value can be supported by display unit 110,
And second value may be less than the grayscale value of any rank of this specific exponent number.For example, first value can be the 5th rank
Grayscale value, and second value can be the grayscale value of any rank in the first rank to fourth order.In some embodiments, the ash of specific exponent number
Rank value can be preset according to the grayscale value that display unit 110 is supported.
In some embodiments, display unit 110 is with the grayscale value of lowest-order or with any rank less than specific exponent number
When grayscale value is shown, display brightness may be less than or equal to 1.5 nits (nit).And in further embodiments, display is single
Member 110 with the grayscale value of any rank less than specific exponent number with the grayscale value of lowest-order or when being shown, display brightness is also
It may be less than or equal to 1 nit (nit).
In some embodiments, a variety of grayscale values can also have the grayscale value of a third value, and third value is more than or waits
In the first value.In step s 13, when processing unit 120 judges that the display grayscale read from storage element 140 records R1
For third value grayscale value when, processing unit 120, which can then generate and export third, controls signal Sc3 to display unit 110, with logical
Display unit 110 is crossed directly to start with the grayscale value of third value in response to third control signal Sc3 and shown (step
S16)。
In one embodiment, third control signal Sc3 also can be pulse wave signal, and the pulse wave of third control signal Sc3 is wide
Degree is relevant to third value.Third controls pulse bandwidth of the pulse bandwidth more than second control signal Sc2 of signal Sc3.
Fig. 3 is that the update of one embodiment of the invention shows the flow diagram of grayscale record.It please refers to Fig.1 to Fig.3, handles
Unit 120 also can be used to detect a shutdown signal Sd (step S21).In this, shutdown signal Sd can be used to through the processing unit 120
The display unit 110 of display device 100 is closed, and display unit 110 can be switched to from dispaly state (having display picture)
Off-mode (no display picture).
In one embodiment, shutdown signal Sd can be generated and be transmitted to by switch unit 131 processing unit 120 or by receiving and dispatching
Unit 132 receives and is sent to processing unit 120, but the present invention is not limited only to this.
When processing unit 120 detects shutdown signal Sd, processing unit 120 can show display unit 110 in this moment
The current gray value shown is stored into storage element 140, to update the display grayscale of display device 100 by current gray value
Record R1 (step S22).Later, processing unit 120 can by display unit 110 enter off-mode (step S23) without
Picture is shown again.
In conclusion display device according to the ... of the embodiment of the present invention and its display methods, in display device from off-mode
It being activated and is intended to when being shown with lower grayscale value, first passing through another grayscale exported to should be greater than this lower grayscale value
The control signal of value, another control signal exported again later corresponding to this lower grayscale value drive display device, can
Do not increase additional hardware cost mode make display device reply dispaly state process be not in scintillation.
The technology contents of the present invention are disclosed with preferred embodiment as above-mentioned, and however, it is not to limit the invention, any
Be familiar with this those skilled in the art, do not depart from the present invention spirit do it is a little change and retouch, should all be covered by scope of the invention
It is interior, therefore protection scope of the present invention should be defined by the scope of the appended claims.
Claims (13)
1. a kind of display methods of display device, which is characterized in that the display methods of the display device includes：
Detect the enabling signal of a display device；
When the display grayscale for detecting the enabling signal and the display device is recorded as the grayscale value of a second value, output one the
One control signal gives the display device, is opened with the grayscale value of one first value with responding the first control signal by the display device
Dynamic, wherein the second value is less than first value；And
After first control signal output, a second control signal is exported to the display device, to be rung by the display device
Should second control signal switch to and shown with the grayscale value of the second value.
2. the display methods of display device as described in claim 1, which is characterized in that the pulse bandwidth of the first control signal
It is relevant to first value, the pulse bandwidth of the second control signal is relevant to the second value, and the pulse wave of the first control signal
Width is more than the pulse bandwidth of the second control signal.
3. the display methods of display device as described in claim 1, which is characterized in that the second value is propped up by the display device
The grayscale value of lowest-order in the grayscale value helped.
4. the display methods of display device as claimed in claim 3, which is characterized in that first value is more than the second value one
The grayscale value of rank.
5. the display methods of display device as described in claim 1, also includes：
When the display grayscale for detecting the enabling signal and the display device is recorded as the grayscale value of a third value, output one
Third controls signal to the display device, and signal is controlled with the grayscale of the third value to respond the third by the display device
Value starts and is shown, wherein the third value is greater than or equal to first value.
6. the display methods of display device as described in claim 1, also includes：
When receiving the shutdown signal for closing the display device, which is updated with the current gray value of the display device
Record.
7. a kind of display device, which is characterized in that the display device includes：
One display unit；And
One processing unit detects an enabling signal of the display unit, in detecting the aobvious of the enabling signal and the display unit
When showing that grayscale is recorded as the second value less than one first value, which exports a first control signal and gives the display list
Member is started with responding the first control signal by the display unit with the grayscale value of first value, and in the first control letter
After number output, which export a second control signal to display unit, second is controlled with responding this by the display unit
Signal processed is switched to be shown with the grayscale value of the second value.
8. display device as claimed in claim 7, also includes：
One storage element, to store display grayscale record.
9. display device as claimed in claim 7, which is characterized in that the pulse bandwidth of first control signal be relevant to this first
Value, the pulse bandwidth of the second control signal are relevant to the second value, and the pulse bandwidth of the first control signal be more than this
The pulse bandwidth of two control signals.
10. display device as claimed in claim 7, which is characterized in that the grayscale that first value is supported for the display device
The grayscale value of lowest-order in value.
11. display device as claimed in claim 10, which is characterized in that first value is the grayscale more than the second value single order
Value.
12. display device as claimed in claim 7, wherein in detecting the enabling signal and the display grayscale is recorded as being more than
Or equal to first value a third value when, the processing unit export a third control signal give the display unit, to pass through this
Display unit responds third control signal and is started and shown with the grayscale value of the third value.
13. display device as claimed in claim 7, which is characterized in that the processing unit also in receive close the display unit
A shutdown signal when, with the current gray value of the display unit update the display grayscale record.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710310559.8A CN108806637B (en) | 2017-05-05 | 2017-05-05 | Display device and display method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710310559.8A CN108806637B (en) | 2017-05-05 | 2017-05-05 | Display device and display method thereof |
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| CN108806637A true CN108806637A (en) | 2018-11-13 |
| CN108806637B CN108806637B (en) | 2020-07-24 |
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| KR20050079687A (en) * | 2004-02-06 | 2005-08-11 | 삼성전자주식회사 | Liquid cristal display device for changing luminance automatically and method thereof |
| EP2043080A1 (en) * | 2007-09-28 | 2009-04-01 | Samsung Electronics Co., Ltd. | Backlight driver and liquid crystal display including the same |
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