CN101221742B - Regulation method and device of display equipment - Google Patents
Regulation method and device of display equipment Download PDFInfo
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- CN101221742B CN101221742B CN2008100035819A CN200810003581A CN101221742B CN 101221742 B CN101221742 B CN 101221742B CN 2008100035819 A CN2008100035819 A CN 2008100035819A CN 200810003581 A CN200810003581 A CN 200810003581A CN 101221742 B CN101221742 B CN 101221742B
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Abstract
The invention relates to an adjusting method of a display device and an adjusting device thereof, wherein, the adjusting device comprises a time control module connected with a grid electrode driver of the display device and a storing module which is electrically connected with the time control module. The storing module is used to store a first pulse wave width and a second pulse wave width, wherein, the time control module determines an image frequency of the display device, when the image frequency is positioned in a first image frequency range, an adjusting wave shape with the first pulse wave width is outputted; when the image frequency is positioned in a second image frequency range, an adjusting wave shape with the second pulse wave width is outputted.
Description
Technical field
The invention relates to a kind of method of adjustment and adjusting gear, and particularly relevant for a kind of method of adjustment and adjusting gear of display device.
Background technology
Go in the peripherals in the output of computing machine, display device is an indispensable device.How presenting picture under the situation that allows user's eyes feel comfortably cool, is the major criterion of judging a display device quality.
Under the consideration of power saving, display device will present picture with the frame frequency low than the normal mode formula in battery saving mode.Because frame frequency is low, power supply will consume less power, but cause new problem also.The reduction of frame frequency will bring two problems: charge rate and electrical leakage quantity increase that the pulse bandwidth of grid broadens and caused.The charge rate increase will make the picture deepening, and the electrical leakage quantity increase will make picture brighten.Because these change, the brightness of display device will change along with the difference of frame frequency, cause the discomfort of human eye.In addition, when frequency reduces, will produce the different flicker level differences that cause picture, and also can cause the discomfort of human eye because of the difference of generating positive and negative voltage and common voltage.
Therefore, how designing one when different display modes is switched, can not influence the display device of brightness and flicker level, is an industry problem demanding prompt solution for this reason.
Summary of the invention
Therefore purpose of the present invention is exactly that a kind of method of adjustment of display device is being provided, and comprises the following step: provide first pulse bandwidth; Second pulse bandwidth is provided; Judge a frame frequency of display device; When frame frequency is positioned at the first frame frequency scope, then export an adjustment waveform with first pulse bandwidth; When frame frequency is positioned at the second frame frequency scope, then export an adjustment waveform with second pulse bandwidth; Described adjustment waveform exports a gate drivers of a described display device to; The first picture reference frequency and the second picture reference frequency are provided, and obtain a ratio of the described first picture reference frequency and the second picture reference frequency; Obtain the second benchmark pulse bandwidth according to the product of described ratio and described first pulse bandwidth; Set described second pulse bandwidth between first pulse bandwidth and the described second benchmark pulse bandwidth.
Another object of the present invention is that a kind of adjusting gear of display device is being provided, and comprises: a time control module is connected in a gate drivers of display device; And a storage module, be electrically connected at time control module.Storage module is in order to store first pulse bandwidth and second pulse bandwidth; Wherein time control module is judged a frame frequency of display device, makes when frame frequency is positioned at the first frame frequency scope, and output has one of first pulse bandwidth and adjusts waveform; When frame frequency was positioned at the second frame frequency scope, output had one of second pulse bandwidth and adjusts waveform, and described adjustment waveform exports a gate drivers of a described display device to; Described second pulse bandwidth is set between described first pulse bandwidth and the second benchmark pulse bandwidth, obtain the second benchmark pulse bandwidth according to the product of ratio and described first pulse bandwidth, wherein said ratio is the ratio of the first picture reference frequency and the second picture reference frequency.
The invention has the advantages that by the stored desirable pulse bandwidth of storage module of the present invention, pulse bandwidth is adjusted to an optimum value, make brightness after frame frequency changes, also can maintain optimal brightness, and achieve the above object easily.
Description of drawings
Fig. 1 is the calcspar of display device embodiment of the present invention.
Fig. 2 is the oscillogram of adjustment waveform of the present invention.
Fig. 3 is the calcspar of another embodiment of display device of the present invention.
Fig. 4 is the process flow diagram of the method for adjustment of display device of the present invention.
Fig. 5 is another process flow diagram of the method for adjustment of display device of the present invention.
Drawing reference numeral:
1: display device 10: adjusting gear
100: time control module 101: frame frequency
102: storage module 103: adjust waveform
12: gate drivers 20,21,22,23,24,25: sets of signals
212: the second pulse bandwidths of 210: the first pulse bandwidths
232: the second zero-times of 211: the second benchmark pulse bandwidths
Zero-time 300 in 231: the first: time control module
3: display device 302: storage module
301: frame frequency 304: detection module
303: adjust waveform 32: gate drivers
306: comparison module
Embodiment
After consulting embodiment graphic and that describe subsequently, the knowledgeable that knows usually with the technical field of the invention just can understand purpose of the present invention, feature and advantage, and technological means of the present invention and enforcement aspect.
Fig. 1 is first embodiment of display device of the present invention.As shown in Figure 1, display device 1 comprises adjusting gear 10 and gate drivers 12.Adjusting gear 10 comprises time control module 100 and storage module 102, and wherein time control module 100 is connected in the gate drivers 12 of display device 1, and 102 of storage modules are electrically connected at time control module 100.Storage module 102 is in order to store first pulse bandwidth and second pulse bandwidth.In other embodiment, storage module 102 can select to store the 3rd, the 4th ..., the n pulse bandwidth, and depend on the display mode number that display device 1 has and decide that the present invention is not limited to the number that present embodiment exemplifies.Each pulse bandwidth can correspond to a frame frequency scope.Time control module 100 is judged the frame frequency 101 of display device 1, makes when frame frequency 101 is positioned at the first frame frequency scope, and output has one of first pulse bandwidth and adjusts waveform 103; When frame frequency was positioned at the second frame frequency scope, output had one of second pulse bandwidth and adjusts waveform 103.For instance, have 60Hz and two kinds of display modes of 40Hz as display device 1, then when frame frequency falls within the 55Hz-65Hz interval, time control module 100 will capture the value of first pulse bandwidth of corresponding 55Hz-65Hz in the storage module 102, and adjustment waveform 101 pulse bandwidths that will export are set at first pulse bandwidth; When frame frequency 101 falls within the 35Hz-45Hz interval, time control module 100 will capture the value of second pulse bandwidth of corresponding 35Hz-45Hz in the storage module 102, and adjustment waveform 101 pulse bandwidths that will export are set at second pulse bandwidth.
Second pulse bandwidth is set between this first pulse bandwidth and the second benchmark pulse bandwidth, and wherein the second benchmark pulse bandwidth is obtained by the relation of the multiple between the first picture reference frequency and the second picture reference frequency with first pulse bandwidth.With aforesaid example, first and second picture reference frequency is respectively 40Hz and 60Hz, and the second benchmark pulse bandwidth is 60/40 of first pulse bandwidth, promptly 3/2 times.Therefore, second pulse bandwidth will be set between first pulse bandwidth (i.e. the second benchmark pulse bandwidth) of first pulse bandwidth and 3/2 times.
Fig. 2 is the oscillogram of adjustment waveform of the present invention.As shown in Figure 2, two kinds of frame frequencies of sets of signals 20 expressions, sets of signals 21 representatives have the adjustment waveform of first pulse bandwidth 210 and the second benchmark pulse bandwidth 211, and sets of signals 22 representatives have the adjustment waveform of first pulse bandwidth 210 and second pulse bandwidth 212.
In other embodiment, second pulse bandwidth can be set according to first brightness and second brightness of display device 1.First brightness is the brightness of frame frequency when the first frame frequency scope; Second brightness is the brightness of frame frequency when the second frame frequency scope.Second pulse bandwidth can make first brightness and second luminance difference less than a desirable luminance difference value.
Adjust the gate drivers 12 that waveform 103 exports display device 1 to, gate drivers 12 more is connected to the grid (not illustrating) of a plurality of pixel cells, adjusts the charge cycle of waveform 103 in order to the control pixel cell, and then adjusts the brightness of display device 1.
Table one is for after being converted to the display mode of 40Hz at 60Hz, under input different pieces of information greyscale level situation (L16, L32, L48), adjusting the comparison of using the brightness value of first pulse bandwidth, the second benchmark pulse bandwidth and second pulse bandwidth on the waveform 101 respectively.Can observe from table one, as not change pulse bandwidth and continue to use first pulse bandwidth (being 17.4um), therefore brightness will brighten; Use the second benchmark pulse bandwidth (being 26um) as directly changing with the frequency equal proportion, then brightness is with therefore deepening; And the present invention further is adjusted into second pulse bandwidth (being 22um) again, then can allow brightness remain unchanged, and makes human eye perceives comfortable.
Table one
In the second embodiment of the present invention, storage module 102 can store first zero-time and second zero-time.When time control module 100 is positioned at the first frame frequency scope in frame frequency 101, adjust waveform 103 in the output of first zero-time; If frame frequency is positioned at the second frame frequency scope, then adjust waveform 103 in the output of second zero-time.As shown in Figure 2, sets of signals 23 is representation signal groups 22 through first zero-time 231 and second zero-time, 232 adjusted adjustment waveforms 103.By the control zero-time, can further make the adjustment waveform that optimized adjustment is done in the brightness of display device again.
Fig. 3 is the display device of the third embodiment of the present invention.As shown in Figure 3, not existing together of the setting of display device 3 and first embodiment only is that time control module 300 more comprises a detection module 304 and a comparison module 306, and it can make adjustment waveform 303 have a top rake.Wherein on the pixel cell that connected of the gate drivers 32 of display device 3 (not illustrating), more comprise community electrode (not illustrating).Detection module 304 is initial and when finishing in order to a pulse wave that detect to adjust waveform 301, a voltage difference of common electrode.Comparison module 306 is in order to first voltage difference when frame frequency 301 is positioned at this first frame frequency scope relatively, and second voltage difference of frame frequency 301 when being positioned at this second frame frequency scope, make time control module in frame frequency 301 when the first frame frequency scope is transferred to the second frame frequency scope, under the situation of second voltage difference, increase a top rake amplitude of second pulse wave greater than this first voltage difference.Change by this top rake amplitude, the difference that can adjust because of frequency reduction, generating positive and negative voltage and common voltage produces the different different influences that cause of flicker level that cause picture, and human eye is felt comfortably cool.With reference to Fig. 2, sets of signals 24a, 24b, 24c representation signal group 22 through the adjustment of detection modules 304 and comparison module 306 after the adjustment waveform 303 that produces with top rake, export the oscillogram behind the grid of three pixel cells respectively to.In other embodiment, more can produce sets of signals 25a, 25b, 25c in conjunction with first embodiment, adjustment waveform 303 with suitable pulse bandwidth, top rake and zero-time as Fig. 2.
The fourth embodiment of the present invention is a kind of process flow diagram of method of adjustment of display device as shown in Figure 4, and the method is used as the described adjusting gear of first embodiment.At first execution in step 401, and first pulse bandwidth is provided; Then execution in step 402 provides second pulse bandwidth; Execution in step 403, a frame frequency of judgement display device; Execution in step 404, one of the pulse bandwidth that output is corresponding is adjusted waveform; When frame frequency is positioned at the first frame frequency scope, export an adjustment waveform with first pulse bandwidth; When frame frequency is positioned at the second frame frequency scope, export an adjustment waveform with second pulse bandwidth.
The fifth embodiment of the present invention is a kind of process flow diagram of method of adjustment of display device as shown in Figure 5, and the method is used as the described adjusting gear of second embodiment.At first execution in step 501, and first pulse bandwidth and first zero-time are provided; Then execution in step 502 provides second pulse bandwidth and second zero-time; Execution in step 503, a frame frequency of judgement display device; Execution in step 504, one of pulse bandwidth that output is corresponding and zero-time adjusted waveform; When frame frequency is positioned at the first frame frequency scope, have one of first pulse bandwidth in the output of first zero-time and adjust waveform; When frame frequency is positioned at the second frame frequency scope, have one of second pulse bandwidth in the output of second zero-time and adjust waveform.
In the 4th and the 5th embodiment, when frame frequency has change, more comprise a step: it is initial and when finishing detect to adjust a pulse wave of waveform, a voltage difference of common electrode.If frame frequency is converted to second frame frequency from first frame frequency, and second voltage difference of the second frame frequency scope promptly increases the top rake amplitude of this second pulse wave greater than first voltage difference of the first frame frequency scope.
By the invention described above preferred embodiment as can be known, use and the invention has the advantages that the modulation that sees through pulse bandwidth, zero-time and the top rake amplitude of adjusting waveform, can make the brightness of picture and flicker degree be adjusted to human eye and feel comfortable degree.
Though the present invention discloses as above with embodiment; right its is not in order to limit the present invention; any have a technical field of the invention know the knowledgeable usually; without departing from the spirit and scope of the present invention; when doing various changes and retouching; and can think to carry other different embodiment, so protection scope of the present invention is as the criterion when looking the claim scope person of defining.
Claims (14)
1. the method for adjustment of a display device, described method of adjustment comprises the following step:
First pulse bandwidth is provided;
Second pulse bandwidth is provided;
Judge a frame frequency of described display device;
When described frame frequency was positioned at the first frame frequency scope, output device had one of described first pulse bandwidth to adjust waveform;
When described frame frequency was positioned at the second frame frequency scope, output device had one of described second pulse bandwidth to adjust waveform;
Described adjustment waveform exports a gate drivers of a described display device to;
The first picture reference frequency and the second picture reference frequency are provided, and obtain a ratio of the described first picture reference frequency and the second picture reference frequency;
Obtain the second benchmark pulse bandwidth according to the product of described ratio and described first pulse bandwidth;
Set described second pulse bandwidth between first pulse bandwidth and the described second benchmark pulse bandwidth.
2. method of adjustment as claimed in claim 1, described method of adjustment comprises the following step in addition:
First zero-time is provided,, exports described adjustment waveform in first zero-time when described frame frequency is positioned at the described first frame frequency scope; And
Second zero-time is provided,, exports described adjustment waveform in second zero-time when described frame frequency is positioned at the described second frame frequency scope.
3. method of adjustment as claimed in claim 1, described method of adjustment comprise an opening time spacing of setting described first pulse wave and second pulse wave according to described frame frequency in addition.
4. method of adjustment as claimed in claim 1, described method of adjustment comprises in addition:
One desirable luminance difference value is provided;
Detect first brightness of described display device, when the frame frequency of described display device during in the first frame frequency scope;
Detect second brightness of described display device, when the frame frequency of described display device during in the second frame frequency scope;
Set described second pulse bandwidth, make described first brightness and described second luminance difference less than described desirable luminance difference value.
5. method of adjustment as claimed in claim 1, described gate drivers more is connected to the grid of a plurality of pixel cells, and described adjustment waveform is in order to control a charge cycle of described these pixel cells.
6. method of adjustment as claimed in claim 1, wherein said adjustment waveform has a top rake.
7. method of adjustment as claimed in claim 6, wherein said display device comprises community electrode, and described method of adjustment comprises in addition:
Detect frame frequency and be positioned at the described first frame frequency scope, a pulse wave of described adjustment waveform is initial and when finishing, first voltage difference of described common electrode;
Detect frame frequency and be positioned at the described second frame frequency scope, described pulse wave is initial and when finishing, second voltage difference of described common electrode;
More described first voltage difference and described second voltage difference;
When described second voltage difference greater than described first voltage difference, increase the top rake amplitude of described second pulse wave.
8. method of adjustment as claimed in claim 7, described method of adjustment comprises in addition provides the three-picture frequency range, and obtains one corresponding to the 3rd pulse bandwidth of described three-picture frequency range and corresponding to a top rake amplitude of described three-picture frequency range.
9. the adjusting gear of a display device, described display device has a gate drivers, it is characterized in that, and described adjusting gear comprises:
One time control module is connected in the gate drivers of described display device; And
One storage module, described storage module is electrically connected at described time control module, and described storage module is in order to store first pulse bandwidth and second pulse bandwidth; Wherein said time control module is judged a frame frequency of described display device, makes when described frame frequency is positioned at the first frame frequency scope, and output device has one of described first pulse bandwidth to adjust waveform; When described frame frequency was positioned at the second frame frequency scope, output device had one of described second pulse bandwidth to adjust waveform, and described adjustment waveform exports a gate drivers of a described display device to;
Described second pulse bandwidth is set between described first pulse bandwidth and the second benchmark pulse bandwidth, obtain the second benchmark pulse bandwidth according to the product of ratio and described first pulse bandwidth, wherein said ratio is the ratio of the first picture reference frequency and the second picture reference frequency.
10. adjusting gear as claimed in claim 9 is characterized in that, described storage module more stores first zero-time and second zero-time; Described time control module is positioned at the described first frame frequency scope in described frame frequency, exports described adjustment waveform in first zero-time; When described frame frequency is positioned at the described second frame frequency scope, export described adjustment waveform in second zero-time.
11. adjusting gear as claimed in claim 9, it is characterized in that, described gate drivers is connected to the grid of a plurality of pixel cells, and described adjustment waveform is in order to controlling a charge cycle of described these pixel cells, and then adjusts a brightness of described display device.
12. adjusting gear as claimed in claim 9 is characterized in that, described adjustment waveform has a top rake.
13. adjusting gear as claimed in claim 12 is characterized in that, described display device comprises community electrode, and described time control module comprises:
One detection module, described detection module are initial and when finishing in order to a pulse wave that detects described adjustment waveform, a voltage difference of described common electrode; And
One comparison module, in order to first voltage difference when frame frequency is positioned at the described first frame frequency scope relatively, and second voltage difference of frame frequency when being positioned at the described second frame frequency scope, make described time control module during greater than described first voltage difference, increase a top rake amplitude of described second pulse wave in described second voltage difference.
14. adjusting gear as claimed in claim 9 is characterized in that, described storage module stores the 3rd pulse bandwidth, makes when described frame frequency is positioned at the three-picture frequency range, and output device has one of described the 3rd pulse bandwidth to adjust waveform.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100035819A CN101221742B (en) | 2008-01-25 | 2008-01-25 | Regulation method and device of display equipment |
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|---|---|---|---|
| CN2008100035819A CN101221742B (en) | 2008-01-25 | 2008-01-25 | Regulation method and device of display equipment |
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| CN101221742A CN101221742A (en) | 2008-07-16 |
| CN101221742B true CN101221742B (en) | 2010-07-21 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| TWI433089B (en) | 2010-10-29 | 2014-04-01 | Chunghwa Picture Tubes Ltd | Clip system of a display and timing-clip control method thereof |
| CN102237061B (en) * | 2010-11-16 | 2013-12-04 | 华映视讯（吴江）有限公司 | Angle cutting system of display and timing sequence angle cutting control method thereof |
| TWI440003B (en) | 2010-12-09 | 2014-06-01 | Chunghwa Picture Tubes Ltd | A timing controller of a lcd panel and a timing control method thereof |
| CN102005199B (en) * | 2010-12-24 | 2013-04-03 | 福建华映显示科技有限公司 | Time schedule controller for liquid crystal display panel and time schedule control method thereof |
| CN104299588B (en) | 2014-10-27 | 2017-01-11 | 京东方科技集团股份有限公司 | Grid drive circuit, grid drive method and display device |
| CN111341258B (en) * | 2020-03-25 | 2021-04-02 | 上海天马有机发光显示技术有限公司 | Pixel driving circuit, driving method thereof and display device |
| CN116055660B (en) * | 2023-04-03 | 2023-09-29 | 广州聚融电子科技有限公司 | Vehicle-mounted video entertainment system capable of realizing multi-screen interaction |
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