CN104715701A - Display device and drive method of display device - Google Patents
Display device and drive method of display device Download PDFInfo
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- CN104715701A CN104715701A CN201310668317.8A CN201310668317A CN104715701A CN 104715701 A CN104715701 A CN 104715701A CN 201310668317 A CN201310668317 A CN 201310668317A CN 104715701 A CN104715701 A CN 104715701A
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Abstract
The invention provides a display device and a drive method of the display device. The display device comprises a display panel, a driving circuit and a controller; the driving circuit for the panel is used for receiving image data and processing the image data so as to output the driving voltage to the display panel; the image data comprise corresponding red original pixel data, corresponding green original pixel data and corresponding blue original pixel data; and the controller is used for outputting control signals to the driving circuit for the panel so as to control the display device to get into the eyesight protection mode. When the display device gets into the eyesight protection mode, the driving circuit for the panel corrects gray scales of the blue original pixel data so as to reduce the gray scales of the blue original pixel data. The display device has the mode of protecting the eyesight of a user.
Description
Technical field
The present invention relates to a kind of display device and driving method thereof.
Background technology
At present, display device is widely used in, in all kinds of consumption electronic products (as mobile phone, dull and stereotyped counter and TV), making the life of people more and more abundanter.But in the use procedure of display device, some user lacks the self-consciousness of sight protectio, watch display device time long and cause eyesight to suffer damage.
Summary of the invention
In view of this, a kind of display device reducing inpairment of vision is provided to be necessity in fact.
There is provided a kind of and make the driving method of the display device that can reduce inpairment of vision also for necessary.
A kind of display device, it comprises display panel, panel drive circuit and controller, this panel drive circuit is for receiving view data and processing with outputting drive voltage to this display panel this view data, this display panel comprises red pixel cell, green pixel cell and blue pixel cells, this view data comprises the red raw pixel data of corresponding red pixel cell, the corresponding green raw pixel data of green pixel cell and the blue raw pixel data of corresponding blue pixel cells, this panel drive circuit comprises gray scale correction circuit and data drive circuit, this controller controls signal to this panel drive circuit and enters sight protectio pattern to control this display device from general mode for exporting first, when this display device is in sight protectio pattern, this gray scale correction circuit carries out gray scale correction and output blue correcting pixel data to this blue raw pixel data, this data drive circuit produce based on this blue-correction pixel data and output blue pixel drive voltage to the blue pixel cells of this display panel, wherein the GTG of this blue-correction pixel data is lower than the GTG of this blue raw pixel data, make the actual gray of this blue pixel cells lower than the GTG of this blue raw pixel data.
A kind of display device, it comprises display panel, driving circuit and controller, this panel drive circuit is for receiving view data and processing with outputting drive voltage to this display panel this view data, this display panel comprises red pixel cell, green pixel cell and blue pixel cells, this view data comprises the red raw pixel data of corresponding red pixel cell, the corresponding green raw pixel data of green pixel cell and the blue raw pixel data of corresponding blue pixel cells, this controller is used for outputing control signals to this panel drive circuit and enters sight protectio pattern to control this display device, when this display device enters sight protectio pattern, the GTG of this panel drive circuit to this blue raw pixel data corrects the GTG reducing this blue raw pixel data, make the actual gray of the blue pixel cells of this display panel lower than the GTG of this blue raw pixel data.
A driving method for display device, it comprises the steps:
There is provided view data, this view data comprises red raw pixel data, green raw pixel data and blue raw pixel data; And
When display device enters sight protectio pattern by general mode; gray scale correction is carried out to this blue raw pixel data and obtains blue-correction pixel data; and produce according to this blue-correction pixel data and output blue pixel drive voltage to display panel, the actual gray of the blue light that this display device is exported is lower than the GTG of this blue raw pixel data.
A driving method for display device, it comprises the steps:
There is provided view data, this view data comprises red raw pixel data, green raw pixel data and blue raw pixel data; And
When display device enters sight protectio pattern by general mode; correct to the GTG of this blue raw pixel data the GTG reducing this blue raw pixel data, the actual gray of the blue light that this display device is exported is lower than the GTG of this blue raw pixel data.
In display device provided by the invention and driving method thereof; sight protectio pattern is provided; and the GTG of blue raw pixel data is reduced in this sight protectio pattern; frequency due to blue light is higher larger to inpairment of vision; the blue light that the GTG reducing blue raw pixel data can make this display panel export reduces, and reaches the object of protection user eyesight.
Accompanying drawing explanation
Fig. 1 is the block diagram of the display device of first embodiment of the invention.
Fig. 2 is the planar structure schematic diagram of display panel shown in Fig. 1.
Fig. 3 is the image element circuit schematic diagram of the pixel cell of display panel one shown in Fig. 1.
Fig. 4 is the block diagram of the display device of second embodiment of the invention.
Fig. 5 is the block diagram of the display device of third embodiment of the invention.
Fig. 6 is the process flow diagram of the driving method of the display device of first embodiment of the invention.
Main element symbol description
Display device 10,20,30
Display panel 11
Panel drive circuit 12
Controller 13,23,33
On-screen display circuit 14,24
Pixel cell 110
Red pixel cell R
Green pixel cell G
Blue pixel cells B
Data line 111
Sweep trace 112
Thin film transistor (TFT) 113
Liquid crystal capacitance 114
Sequential control circuit 121
Data drive circuit 122
Data processing circuit 123
Gray scale correction circuit 124
Data outputting unit 125
Look-up table 126
Scan drive circuit 127
Signal generating circuit 128
Circuit for detecting 25,35
Eyeball tracking unit 251,351
Timer 252,352
Step S1, S2, S3, S4
Following embodiment will further illustrate the present invention in conjunction with above-mentioned accompanying drawing.
Embodiment
Refer to Fig. 1, Fig. 1 is the block diagram of the display device 10 of first embodiment of the invention.This display device 10 comprises display panel 11, panel drive circuit 12 and controller 13.This panel drive circuit 12 is for receiving view data and processing with outputting drive voltage to this display panel 11 this view data.
Refer to Fig. 2, Fig. 2 is the planar structure schematic diagram of this display panel 11.This display panel 11 comprises the pixel cell 110 of plural number arrangement in matrix, and this pixel cell comprises red pixel cell R, green pixel cell G and blue pixel cells B.This view data comprises the blue raw pixel data of the red raw pixel data of corresponding red pixel cell R, the green raw pixel data of corresponding green pixel cell G and corresponding blue pixel cells B.This controller 13 enters sight protectio pattern to control this display device 10 by general mode for outputing control signals to this panel drive circuit 12; when this display device 10 enters sight protectio pattern, the GTG of this panel drive circuit 12 to this blue raw pixel data corrects the GTG reducing this blue raw pixel data.
Preferably, this display panel 11 is display panels, it will be appreciated, of course, that this display panel 11 also can be organic EL display panel in one change embodiment.Refer to Fig. 3, Fig. 3 is the image element circuit schematic diagram of a pixel cell 110 (this pixel cell can be red, green or blue pixel cells RGB) of display panel 11 shown in Fig. 1, namely in other words, this redness, green or blue pixel cells RGB have substantially identical image element circuit.The sweep trace 112 that this display panel 11 comprises data line 111 and intersects vertically with this data line 111, this pixel cell 110 is defined in adjacent two data lines 111 and adjacent two sweep traces 112 intersect in the region formed, each pixel cell 110 can comprise thin film transistor (TFT) 113 and liquid crystal capacitance 114, the gate of this thin film transistor (TFT) 113 is electrically connected this sweep trace 112, the source electrode of this thin film transistor (TFT) 113 is electrically connected this data line 111, and the drain of this thin film transistor (TFT) 113 is electrically connected this liquid crystal capacitance 114.
Particularly, this panel drive circuit 12 comprises sequential control circuit 121 and data drive circuit 122.This sequential control circuit 121 comprises data processing circuit 123, gray scale correction circuit 124 and data outputting unit 125.This data processing circuit 123 is for receiving this view data and processing to export this redness, green, blue raw pixel data and sequential control data to this view data.
In this sight protectio pattern, this gray scale correction circuit 124 receives this blue raw image data from this data processing circuit 123 and carries out gray scale correction and output blue correcting pixel data to this blue raw pixel data, this data outputting unit 125 receives this redness and green raw pixel data from this data processing circuit 123, and receive this blue-correction pixel data from this gray scale correction circuit 124, and this redness and green pixel raw data and this blue-correction pixel data are provided to this data drive circuit 122, this data drive circuit 122 produces and output red based on this redness and green raw pixel data and this blue-correction pixel data, green and blue pixel driving voltage via this data line 111 to this redness, green and blue pixel cells RGB.Wherein the GTG of this blue-correction pixel data is lower than the GTG of this blue raw pixel data; thus the actual gray that the blue pixel cells B of this display panel 11 shows is lower than original gray-scale (i.e. the GTG of this blue raw pixel data); reduce the blue light that this display panel 11 exports, reach the object of protection user eyesight.For example, the GTG of this blue raw pixel data is 100, through the correction of this gray scale correction circuit 124, the GTG of this blue-correction pixel data is 60, thus the actual gray that the blue pixel cells B of this display panel 11 shows is 60, its original gray-scale lower than this blue pixel cells B (i.e. the GTG 100 of this blue raw pixel data).
Preferably, in one embodiment, this gray scale correction circuit 124 can comprise look-up table 126, this look-up table 126 comprises plural blue raw pixel data and the plural blue-correction pixel data corresponding with blue raw pixel data, and this gray scale correction circuit finds out corresponding blue-correction pixel data according to this blue raw pixel data in this look-up table 126.
At this general mode; this data outputting unit 125 receives this redness, green and blue raw pixel data from this data processing circuit 123; and this redness, green and blue raw pixel data are provided to this data drive circuit 122; this data drive circuit 122 produce based on this redness, green and blue raw pixel data and output red, green and blue pixel driving voltage via this data line 111 to this redness, green and blue pixel cells RGB, thus this display panel 11 shows normal pictures.
Be appreciated that, this panel drive circuit 12 can further include scan drive circuit 127, this scan drive circuit 127, for exporting the sweep trace 112 of a series of scanning drive signal to this display panel 11, drives this display panel 11 to show to coordinate this data drive circuit 122.
Further, this sequential control circuit 121 also comprises clock signal and produces circuit 128, this clock signal produces circuit 128 also for receiving the time series data of this data processing circuit 123 output to produce timing control signal, and this timing control signal is outputted to this data drive circuit 122 and scan drive circuit 127, in order to control the sequential of redness, green and blue pixel driving voltage that this data drive circuit 122 exports, and control the sequential of the scanning drive signal that this scan drive circuit 127 exports.
Be appreciated that, in one embodiment, when this display device 10 large size electro subset middle for desktop monitors, notebook computers and TV etc., this sequential control circuit 121, this data drive circuit 122 and this scan drive circuit 127 are an integrated circuit (IC) chip respectively, and by inner or external circuit wiring electrical connection.Change in embodiment in one, when this display device 10 is for portable electric appts such as mobile phone, flat computer and digital cameras, this sequential control circuit 121, this data drive circuit 122 and this scan drive circuit 127 three can be integrated in an integrated circuit (IC) chip.
In addition, in present embodiment, this gray scale correction circuit for correcting blue raw pixel data in sight protectio pattern is integrated in this sequential control circuit 121, as being arranged in the integrated circuit (IC) chip at this sequential control circuit 121 place.But be appreciated that in another embodiment, this gray scale correction circuit 124 also can be arranged in this data drive circuit 122, as being arranged in the integrated circuit (IC) chip at this data drive circuit 122 place.
Further; in present embodiment; this display device 10 also comprises screen display (On Screen Display further; OSD) circuit 14; this on-screen display circuit 14 can produce first mode switching signal or the second pattern to this controller 13 based on the operation of user; this controller 13 exports this first control signal or second based on this first mode switching signal and controls signal to this panel drive circuit 12, changes between this general mode and sight protectio pattern to control this display device 10.
Particularly, user can by this on-screen display circuit 14 Dietary behavior choice menus of operation, this mode selection menu can comprise the option of general mode and sight protectio pattern, when user selects the option of sight protectio pattern, this on-screen display circuit 14 produces this first mode switching signal, this controller 13 receives this first mode switching signal and corresponding export this and first control signal to this panel drive circuit 12, makes this display device 10 enter sight protectio pattern; When user selects the option of general mode, this on-screen display circuit 14 produces this second mode conversion signal, this controller 13 receives this second mode conversion signal and corresponding export this and second control signal to this panel drive circuit 12, makes this display device 10 enter general mode.
Compared to prior art; this display device 10 reduces the GTG of blue raw pixel data in this sight protectio pattern; frequency due to blue light is higher larger to inpairment of vision; the blue light that the GTG reducing blue raw pixel data can make this display panel 11 export reduces, and reaches the object of protection user eyesight.
Further; this display device 10 also comprises on-screen display circuit 14 and controller 13; can select to enter sight protectio pattern according to user; the user that particularly grows up can choose after this display device 10 enters sight protectio pattern in advance; use this display device 10 to teenage user again, reach the object protecting teenage user.
Refer to Fig. 4, Fig. 4 is the block diagram of the display device 20 of second embodiment of the invention.The display device 20 of this second embodiment is substantially identical with the display device 10 of the first embodiment, that is, the description of the display device 10 of this first embodiment be may be used for substantially to the display device 20 of this second embodiment above, the essential difference of the two is: the display device 20 of this second embodiment further comprises circuit for detecting 25, this circuit for detecting 25 detects the time that user uses this display device 20, when user uses the time of this display device 20 more than a schedule time, controller 23 controls display panel 21 and supplies a pattern choice menus to user to remind user the need of entering sight protectio pattern, on-screen display circuit 24 produces first mode switching signal based on this mode selection menu of operation of user, control this display device 20 to make this controller 23 and enter sight protectio pattern.Wherein, this schedule time can set according to actual needs, as 1 hour.
Particularly, this circuit for detecting 25 can comprise eyeball tracking unit 251 and timer 252, this eyeball tracking unit 251 is for following the trail of the eyeball of user and exporting trace signals, and this timer 252 calculates according to this trace signals the time that user uses this display device 20.
In this second embodiment; this circuit for detecting 25 detects the time that user uses this display device 20; when user uses the time of this display device 20 more than a schedule time; this controller 23 controls this display panel 21 and supplies a pattern choice menus to user to remind user the need of entering sight protectio pattern; make this display device 20 can play the object of reminding user's vision protection, user experience is better.
Refer to Fig. 5, Fig. 5 is the block diagram of the display device 30 of third embodiment of the invention.The display device 30 of the 3rd embodiment is substantially identical with the display device 10 of the first embodiment, that is, the description of the display device 10 of this first embodiment be may be used for substantially to the display device 30 of the 3rd embodiment above, the essential difference of the two is: the display device 30 of the 3rd embodiment comprises circuit for detecting 35, this circuit for detecting 35 detects the time that user uses this display device 30, when user uses the time of this display device 30 more than a schedule time, controller 33 exports this first control signal and enters sight protectio pattern to control this display device 30.Wherein, this circuit for detecting 35 also can comprise eyeball tracking unit 351 and timer 352, this eyeball tracking unit 351 is for following the trail of the eyeball of user and exporting trace signals, and this timer calculates according to this trace signals the time that user uses this display device 30.Separately, this schedule time can set according to actual needs, as 1 hour.
In 3rd embodiment; this circuit for detecting 35 detects the time that user uses this display device 30; when user uses the time of this display device 30 more than a schedule time, this controller 33 controls this display device 30 and enters sight protectio pattern, reaches the effect of protection user object.
Refer to Fig. 6, Fig. 6 is the process flow diagram of the driving method of display device of the present invention.
The driving method of this display device comprises the steps S1 ~ S4:
Step S1, provides view data, and this view data comprises red raw pixel data, green raw pixel data and blue raw pixel data.
Step S2; when display device enters sight protectio pattern by general mode; correct to the GTG of this blue raw pixel data the GTG reducing this blue raw pixel data, the actual gray of the blue light that this display device is exported is lower than the GTG of this blue raw pixel data.
Particularly, this step S2 may further include following steps: carry out gray scale correction to this blue raw pixel data and obtain blue-correction pixel data, according to this blue-correction pixel data produce and output blue pixel drive voltage to display panel, wherein the GTG of this blue-correction pixel data is lower than the GTG of this blue raw pixel data, and then the actual gray of the blue light that this display device exports is lower than the GTG of this blue raw pixel data.Further, in this step S2, this display device comprises look-up table, this look-up table comprises plural blue raw pixel data and the plural number blue-correction pixel data corresponding with blue raw pixel data, carries out gray scale correction and the step obtaining blue-correction pixel data comprises: the blue-correction pixel data finding out correspondence according to this blue raw pixel data in this look-up table to this blue raw pixel data.
Step S3, when display device enters sight protectio pattern by general mode, produce according to this redness and green raw pixel data and output red and green pixel driving voltage to display panel.
Step S4, when display device is in general mode, according to this redness, green and blue raw pixel data produce respectively and output red, green and blue pixel driving voltage to display panel.
Further, in one embodiment, this driving method is further comprising the steps of: detecting user uses the time of this display device, when user uses the time of this display device more than a schedule time, provides this conversion to remind menu to user; And produce first mode switching signal according to the operation of user, and control this display device based on this first mode switching signal and enter this sight protectio pattern by this general mode.Wherein, detecting user uses the step of the time of this display device to comprise: follow the trail of the eyeball of user and produce trace signals, calculates according to this trace signals the time that user uses this display device.
Claims (20)
1. a display device, it comprises display panel, panel drive circuit and controller, this panel drive circuit is for receiving view data and processing with outputting drive voltage to this display panel this view data, this display panel comprises red pixel cell, green pixel cell and blue pixel cells, this view data comprises the red raw pixel data of corresponding red pixel cell, the corresponding green raw pixel data of green pixel cell and the blue raw pixel data of corresponding blue pixel cells, it is characterized in that: this panel drive circuit comprises gray scale correction circuit and data drive circuit, this controller controls signal to this panel drive circuit and enters sight protectio pattern to control this display device from general mode for exporting first, when this display device is in sight protectio pattern, this gray scale correction circuit carries out gray scale correction and output blue correcting pixel data to this blue raw pixel data, this data drive circuit produce based on this blue-correction pixel data and output blue pixel drive voltage to the blue pixel cells of this display panel, wherein the GTG of this blue-correction pixel data is lower than the GTG of this blue raw pixel data, make the actual gray of this blue pixel cells lower than the GTG of this blue raw pixel data.
2. display device as claimed in claim 1, it is characterized in that: this gray scale correction circuit comprises look-up table, this look-up table comprises plural blue raw pixel data and the plural blue-correction pixel data corresponding with blue raw pixel data, and this gray scale correction circuit finds out corresponding blue-correction pixel data according to this blue raw pixel data in this look-up table.
3. display device as claimed in claim 1, it is characterized in that: when this display device is in general mode, this data drive circuit produce respectively based on this redness, green and blue raw pixel data and output red, green and blue pixel driving voltage to the redness of this display panel, green and blue pixel cells.
4. display device as claimed in claim 1, it is characterized in that: this panel drive circuit also comprises sequential control circuit, this gray scale correction circuit is arranged in this sequential control circuit, this sequential control circuit comprises data processing circuit and data outputting unit, when this display device is in general mode, this data processing circuit receives this view data and exports this red raw pixel data, this green raw pixel data and this blue raw pixel data via this data outputting unit to this data drive circuit; When this display device is in sight protectio pattern; this data processing circuit receives this view data and exports this red raw pixel data and this green raw pixel data to this data outputting unit; and export this blue raw pixel data to this gray scale correction circuit; this gray scale correction circuit exports this blue-correction pixel data to this data outputting unit, and this data outputting unit exports this red raw pixel data, this green raw pixel data and this blue-correction pixel data to this data drive circuit.
5. display device as claimed in claim 1, it is characterized in that: this sequential control circuit also comprises clock signal and produces circuit, this view data also comprises sequential control data, this data processing circuit exports these sequential control data and produces circuit to this clock signal, and this clock signal produces circuit and produces based on these sequential control data and export the first timing control signal to this data drive circuit.
6. display device as claimed in claim 5, it is characterized in that: this panel drive circuit also comprises scan drive circuit, this clock signal produces circuit and also exports the second timing control signal to this scan drive circuit, and this scan drive circuit receives this second timing control signal and exports a series of scanning drive signal to this display panel.
7. display device as claimed in claim 1, is characterized in that: this controller also controls signal to this panel drive circuit and enters general mode to control this display device from this sight protectio pattern for exporting second.
8. display device as claimed in claim 1, it is characterized in that: this display device also comprises on-screen display circuit, this on-screen display circuit produces first mode switching signal to this controller based on the operation of user, and this controller exports this first control signal based on this first mode switching signal.
9. display device as claimed in claim 8, it is characterized in that: this display device also comprises circuit for detecting, this circuit for detecting detecting user uses the time of this display device, when user uses the time of this display device more than a schedule time, this display device provides a mode selection menu to user by this display panel, and this on-screen display circuit produces this first mode switching signal based on this mode selection menu of operation of user.
10. display device as claimed in claim 1, it is characterized in that: this display device also comprises circuit for detecting, this circuit for detecting detecting user uses the time of this display device, and when user uses the time of this display device more than a schedule time, this controller exports this first control signal.
11. display device as claimed in claim 10, wherein, this circuit for detecting comprises eyeball tracking unit and timer, and this eyeball tracking unit is for following the trail of the eyeball of user and exporting trace signals, and this timer calculates according to this trace signals the time that user uses this display device.
12. 1 kinds of display device, it comprises display panel, driving circuit and controller, this panel drive circuit is for receiving view data and processing with outputting drive voltage to this display panel this view data, this display panel comprises red pixel cell, green pixel cell and blue pixel cells, this view data comprises the red raw pixel data of corresponding red pixel cell, the corresponding green raw pixel data of green pixel cell and the blue raw pixel data of corresponding blue pixel cells, it is characterized in that: this controller is used for outputing control signals to this panel drive circuit and enters sight protectio pattern to control this display device, when this display device enters sight protectio pattern, the GTG of this panel drive circuit to this blue raw pixel data corrects the GTG reducing this blue raw pixel data, make the actual gray of the blue pixel cells of this display panel lower than the GTG of this blue raw pixel data.
The driving method of 13. 1 kinds of display device, it comprises the steps:
There is provided view data, this view data comprises red raw pixel data, green raw pixel data and blue raw pixel data; And
When display device enters sight protectio pattern by general mode; gray scale correction is carried out to this blue raw pixel data and obtains blue-correction pixel data; and according to this blue-correction pixel data produce and output blue pixel drive voltage to display panel; wherein the GTG of this blue-correction pixel data is lower than the GTG of this blue raw pixel data, and the actual gray of the blue light that this display device is exported is lower than the GTG of this blue raw pixel data.
The driving method of 14. display device as claimed in claim 13, it is characterized in that: this display device comprises look-up table, this look-up table comprises plural blue raw pixel data and the plural number blue-correction pixel data corresponding with blue raw pixel data, carries out gray scale correction and the step obtaining blue-correction pixel data comprises: the blue-correction pixel data finding out correspondence according to this blue raw pixel data in this look-up table to this blue raw pixel data.
The driving method of 15. display device as claimed in claim 13; it is characterized in that: the method also comprises: when display device is in sight protectio pattern, produce according to this redness and green raw pixel data and output red and green pixel driving voltage to display panel.
The driving method of 16. display device as claimed in claim 13, it is characterized in that: the method also comprises: when display device is in general mode, according to this redness, green and blue raw pixel data produce respectively and output red, green and blue pixel driving voltage to display panel.
The driving method of 17. display device as claimed in claim 13; it is characterized in that: the method also comprises: the convers ion menu that supplies a pattern is to user; operation according to user produces first mode switching signal, controls this display device enter this sight protectio pattern by this general mode based on this first mode switching signal.
The driving method of 18. display device as claimed in claim 17, it is characterized in that: the method also comprises: detecting user uses the time of this display device, when user uses the time of this display device more than a schedule time, this conversion is provided to remind menu to user.
The driving method of 19. display device as claimed in claim 18, is characterized in that: the method also comprises: follow the trail of the eyeball of user and produce trace signals, calculates according to this trace signals the time that user uses this display device.
The driving method of 20. 1 kinds of display device, it comprises the steps:
There is provided view data, this view data comprises red raw pixel data, green raw pixel data and blue raw pixel data; And
When display device enters sight protectio pattern by general mode; correct to the GTG of this blue raw pixel data the GTG reducing this blue raw pixel data, the actual gray of the blue light that this display device is exported is lower than the GTG of this blue raw pixel data.
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| CN105788534A (en) * | 2016-02-19 | 2016-07-20 | 京东方科技集团股份有限公司 | Display driving system and display apparatus |
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