CN100410982C - Display panel - Google Patents

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CN100410982C
CN100410982C CNB2005100801585A CN200510080158A CN100410982C CN 100410982 C CN100410982 C CN 100410982C CN B2005100801585 A CNB2005100801585 A CN B2005100801585A CN 200510080158 A CN200510080158 A CN 200510080158A CN 100410982 C CN100410982 C CN 100410982C
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data line
display panel
display unit
coupled
display
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CN1889156A (en
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林哲立
陈章三
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Novatek Microelectronics Corp
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Novatek Microelectronics Corp
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Abstract

This invention discloses a kind of display faceplate, liking the display element in the same location of the odd number and even number row in the display element array of the display faceplate to different data wire, to make each date wire of the display faceplate keep unitary polarity in most time. Therefore, it can cut down the driving voltage of the data wire in display faceplate, achieving the province purpose by cutting down the power consumption of the faceplate.

Description

Display panel
Technical field
The present invention relates to a kind of display device, and particularly relate to a kind of display panel that can reduce data line reversal of poles frequency.
Background technology
The progress and development of the existing certain degree of image display technique in recent years.There is the application of most traditional cathode-ray tube to be replaced by flat panel display.General common flat panel display has Thin Film Transistor-LCD (TFT-LCD), low temperature polycrystalline silicon LCD (LTPS LCD) and display of organic electroluminescence (OLED).Recently low temperature polycrystalline silicon (LTPS) and amorphous silicon Thin Film Transistor-LCDs (TFT-LCD) such as (a-Si) gradually become the main flow of market flat-panel screens.No matter notebook, monitor (Monitor), audio-visual apparatus, TV or mobile phone can both find the trace of various LCD.
Fig. 1 is the known display panels of explanation.Please refer to Fig. 1, the display panel 100 of panel display is made of array of display cells.Array of display cells generally is the matrix (shown in the matrix that display unit among the figure 130 is constituted) of determinant, and each display unit 130 is then controlled by data line 111,112 and sweep trace 120 by the driver (not shown).Each display unit 130 has switch 131 (for example thin film transistor (TFT)), liquid crystal capacitance 132 and storage capacitors 133 respectively.The signal of the corresponding sweep trace 120 of switch 131 foundations, and make the data of respective data lines be sent to liquid crystal capacitance 132 and storage capacitors 133.133 of liquid crystal capacitance 132 and storage capacitors are respectively based on common voltage Vcom and stored voltage Vst and the data of storage data line 111.According to the view data of dot matrixization, the display unit 130 of driver drives correspondence.According to the control of driver, each display unit 130 can show specified color in the specified moment.
Along with the maximization of panel and the increase of resolution, perhaps because such as copline conversion (In-plane Switching, IPS) or multi-zone vertical alignment nematic (Multi-domain VerticallyAlignment, MVA) etc. the wide viewing angle technology all needs higher voltage to drive, and this all reason all causes power consumption to become big.For the factor of environmental protection, how to reduce power consumption and become the problem that becomes more and more important.
In addition, because the material that the display panel of Thin Film Transistor-LCD adopts liquid crystal to show as control, polarize for fear of liquid crystal, need drive it with exchange way, all kinds of reversal of poles driving methods are hereat arranged, for example line counter-rotating (Line Inversion), some counter-rotating (Dot Inversion), row counter-rotatings (Column Inversion) or the like.Fig. 2 is the known some inversion driving method that explanation is used for display panel.As shown in the figure, in N picture frame (frame) 210, the polarity of adjacent display cell is opposite each other.When display panel 100 showed N+1 picture frame 220, the polarity of each display unit all was inverted.
Fig. 3 is data line 111 and 112 a signal timing diagram in the key diagram 1.Because big panel is adopted common voltage (Common Voltage) the Vcom design of direct current more, so the data line 111 and 112 of display panel 100 also just has positive polarity voltage (positive voltage) that is higher than common voltage Vcom and the reverse voltage (negative voltage) that is lower than common voltage Vcom.And source electrode driver (Source Driver) just must provide driving voltage (Swing) SW of about twice common voltage Vcom.The big young pathbreaker of driving voltage SW influences the size of power consumption.
Summary of the invention
Purpose of the present invention just provides a kind of display panel, the driving voltage of the data line when scanning to reduce picture on the panel.Even therefore the also single polarity of each self-sustaining of data line most of the time on the panel make the driving voltage of data line only export the driving voltage of half in most of the time, reduce the power consumption of panel and reach purpose of power saving.
A further object of the present invention provides a kind of display panel, except that above-mentioned all purposes, more can improve the aperture opening ratio of display panel.
Based on above-mentioned and other purpose, the present invention proposes a kind of display panel, comprises X bar data line DL i, Y bar sweep trace SL jAnd a plurality of display unit SP I, jAbove-mentioned X and Y are positive integer, DL iRepresent i bar data line, SL jRepresent j bar sweep trace, SP I, jThe display unit of representing i row (column) j capable (row), wherein i is more than or equal to 0 and less than the integer of X, and j is more than or equal to 0 and less than the integer of Y.Wherein, display unit SP 2s, 2tBe coupled to sweep trace SL 2tWith data line DL 2s, display unit SP 2s+1,2tBe coupled to sweep trace SL 2tWith data line DL 2s+1, display unit SP 2s, 2t+1Be coupled to sweep trace SL 2t+1With data line DL 2s+1, display unit SP 2s+1,2t+1Be coupled to sweep trace SL 2t+1With data line DL 2sAforementioned s is more than or equal to 0 and less than the integer of X/2, and t is more than or equal to 0 and less than the integer of Y/2.
According to the described display panel of preferred embodiment of the present invention, above-mentioned data line DL 2sWith data line DL 2s+1Be to be in the layout of on the display panel in interlaced mode.
From another viewpoint, the present invention proposes a kind of display panel, comprises X+1 bar data line DL i, Y bar sweep trace SL jAnd a plurality of display unit SP N, jAbove-mentioned X and Y are positive integer, DL iRepresent i bar data line, SL jRepresent j bar sweep trace, SP N, jThe display unit of representing n row (column) j capable (row), wherein i is more than or equal to 0 and less than the integer of X+1, j is more than or equal to 0 and less than the integer of Y.Wherein, display unit SP N, 2tBe coupled to sweep trace SL 2tWith data line DL n, and display unit SP N, 2t+1Be coupled to sweep trace SL 2t+1With data line DL N+1, aforementioned n is more than or equal to 0 and less than the integer of X, t is more than or equal to 0 and less than the integer of Y/2.
The present invention is coupled to different data lines because of making odd-numbered line in the display panel (row) display unit respectively with the even number line display unit, therefore can make the single polarity of each self-sustaining of data line most of the time on the panel, the driving voltage of the data line when reducing picture scanning on the display panel, and then reduce the power consumption of panel and reach purpose of power saving.
For above and other objects of the present invention, feature and advantage can be become apparent, preferred embodiment cited below particularly, and conjunction with figs. are described in detail below.
Description of drawings
Fig. 1 is the known display panels of explanation.
Fig. 2 is the known some inversion driving method that explanation is used for display panel.
Fig. 3 is the signal timing diagram of data line in the key diagram 1.
Fig. 4 is the embodiment that a kind of display panel is described according to the present invention.
Fig. 5 is the embodiment that another kind of display panel is described according to the present invention.
Fig. 6 is the signal timing diagram according to preferred embodiment explanation data line of the present invention.
Fig. 7 is the embodiment that another kind of display panel is described according to the present invention.
Fig. 8 is the signal timing diagram of data line in the key diagram 7.
The main element description of symbols
100: known display panel
111,112, DL 0～DL X: data line
120, SL 0～SL Y-1: sweep trace
130, SP 0,0～SP X-1, Y-1: display unit
131,410: switch
132,420: liquid crystal capacitance
133,430: storage capacitors
210: the N picture frames
220: the N+1 picture frames
400,500,700: the display panel of the embodiment of the invention
SW: the driving voltage of signal (Swing) on the data line
Vcom: common voltage
Vst: stored voltage
Embodiment
Below will be example with the display panels, the present invention will be described with convenience.One of ordinary skill in the art are when can be according to the instruction of spirit of the present invention and following all embodiment and enlightenment and class is pushed into various display panels.Fig. 4 is the embodiment that a kind of display panel is described according to the present invention.Please refer to Fig. 4,, wherein all do not draw with the peripheral circuit (for example source electrode driver and gate drivers) that display panel 400 couples mutually in order more to clearly demonstrate present embodiment.Has X bar data line DL at this hypothesis display panel 400 0～DL X-1, Y bar sweep trace SL 0～SL Y-1And X*Y display unit SP 0,0～SP X-1, Y-1Wherein, SP I, jThe display unit of representing i row (column) j capable (row).Gate drivers will be by sweep trace SL 0～SL YTo open corresponding display unit line by line.The sequential that cooperates gate drivers, source electrode driver are also by data line DL 0～DL XVideo data is sent to corresponding display unit.
At this sincerely with display unit SP 0,0The embodiment of each display unit of representative explanation.Display unit SP 0,0Comprise switch 410, liquid crystal capacitance 420 and storage capacitors 430.Switch 410 can be a thin film transistor (TFT).First end of switch 410 is coupled to corresponding sweep trace and (is sweep trace SL at this 0), its second end is coupled to respective data lines and (is data line DL at this 0), its 3rd end is coupled to liquid crystal capacitance 420 and storage capacitors 430.Switch 410 determines the coupling access status between second end and the 3rd end according to the control of its first end.That is switch 410 is according to sweep trace SL 0Control timing, and make data line DL 0Data be sent to liquid crystal capacitance 420 and storage capacitors 430.430 of liquid crystal capacitance 420 and storage capacitors are respectively based on common voltage Vcom and stored voltage Vst and storage data line DL 0Data.
In present embodiment, adjacent even data line DL 2sWith odd data line DL 2s+1(s for more than or equal to 0 and less than the integer of X/2) is to be in the layout of on the display panel 400 in interlaced mode.As data line DL among Fig. 4 0With DL 1Promptly be in the layout of on the display panel 400 in interlaced mode.Therefore, SP 2s, 2tBe coupled to SL 2tWith DL 2s, SP 2s+1,2tBe coupled to SL 2tWith DL 2s+1, SP 2s, 2t+1Be coupled to SL 2t+1With DL 2s+1, and SP 2s+1,2t+1Be coupled to SL 2t+1With DL 2s, wherein t is more than or equal to 0 and less than the integer of Y/2, as shown in the figure.
One of ordinary skill in the art can also alternate manner layout even data line DL 2sWith odd data line DL 2s+1For example, can each bar data line of linear fashion layout.Fig. 5 illustrates in the display panel 500 according to the present invention, adjacent even data line DL 2sWith odd data line DL 2s+1Another kind of layout type embodiment.
Fig. 6 is according to preferred embodiment explanation data line DL of the present invention 0With DL 1Signal timing diagram.As seen from Figure 6, can make display panel 400 (or display panel 500) go up the single polarity of each self-sustaining of data line most of the time, and reach the effect of an inversion driving.The driving voltage SW of the data line in the time of can reducing simultaneously picture scanning on the display panel (reducing approximately half) than conventional art, and then reduce the power consumption of display panel and reach purpose of power saving.
Though Fig. 6 shows even data line DL adjacent in the display panel 400 (or display panel 500) 2s(DL for example 0) and odd data line DL 2s+1(DL for example 1) remain in positive polarity and negative polarity separately, however one of ordinary skill in the art also can make each data line its polarity of reversing opportune moment according to need.For example, send the data of complete picture frame (frame) when each data line after, even data line DL 2s(DL for example 0) be reversed to negative polarity by positive polarity, and odd data line DL 2s+1(DL for example 1) then be reversed to positive polarity by negative polarity, by that analogy.Perhaps, after timing reaches a random time, even data line DL 2s(DL for example 0) and odd data line DL 2s+1(DL for example 1) polarity exchange.
In order to improve the aperture opening ratio of display panel, below will be according to the present invention in addition for an embodiment, as shown in Figure 7.At this, display panel 700 can be a display panels.Display panel 700 comprises X+1 bar data line DL 0～DL X, Y bar sweep trace SL 0～SL Y-1And X*Y display unit SP 0,0～SP X-1, Y-1DL iRepresent i bar data line, SL jRepresent j bar sweep trace, SP N, jThe display unit of representing n row (column) j capable (row), wherein i is more than or equal to 0 and less than the integer of X+1, and j is more than or equal to 0 and less than the integer of Y, and n is more than or equal to 0 and less than the integer of X.Wherein, display unit SP N, 2tBe coupled to sweep trace SL 2tWith data line DL n, and display unit SP N, 2t+1Be coupled to sweep trace SL 2t+1With data line DL N+1, be more than or equal to 0 and less than the integer of Y/2 at this t.
Each display unit SP among Fig. 7 0,0～SP X-1, Y-1Can be according to the display unit SP of Fig. 4 0,0Implement it, or implement it, so do not give unnecessary details at this with any known technology.Fig. 8 is data line DL in the key diagram 7 0～DL XSignal timing diagram.Please be simultaneously with reference to Fig. 7 and Fig. 8, be that the columns X of hypothesis array of display cells is an even number at this, one of ordinary skill in the art are when analogizing it according to the instruction of present embodiment and enlightenment.Compare with last embodiment, present embodiment needs to be provided with a data line more.Present embodiment is because of making in the display panel 700 (the display unit SP for example of the display unit of same position in the odd-numbered line and even number line 1,0With SP 1,1) be coupled to different data lines respectively, therefore can make data line DL on the display panel 700 0～DL XThe single polarity of each self-sustaining of most of the time.The driving voltage of the data line in the time of therefore can reducing picture scanning on the display panel, and then reduce the consumption of panel and reach purpose of power saving.
Be to suppose after each data line is sent the data of complete picture frame (frame), promptly to change even data line DL in the present embodiment 2s(DL for example 0) and odd data line DL 2s+1(DL for example 1) polarity.Therefore, data line DL on the display panel 700 0～DL XCan be in the single polarity of each self-sustaining of same picture frame time, and reach the driving effect of counter-rotating as shown in Figure 2.One of ordinary skill in the art also can make each data line its polarity of reversing opportune moment according to need.For example, after timing reaches a random time, even data line DL 2s(DL for example 0) and odd data line DL 2s+1(DL for example 1) polarity exchange.
Though the present invention discloses as above with preferred embodiment; right its is not in order to qualification the present invention, any one of ordinary skill in the art, without departing from the spirit and scope of the present invention; when can doing a little change and improvement, so protection scope of the present invention is as the criterion when looking the claim person of defining.

Claims (7)

1. display panel is characterized in that comprising:
Y bar sweep trace SL j, SL wherein jRepresent j bar sweep trace, j is more than or equal to 0 and less than the integer of Y, Y is a positive integer;
X bar data line DL i, DL wherein iRepresent i bar data line, i is more than or equal to 0 and less than the integer of X, X is a positive integer; And
A plurality of display unit SP I, j, this SP I, jThe display unit of representing i row (column) j capable (row), wherein this display unit SP 2s, 2tBe coupled to sweep trace SL 2tWith data line DL 2s, this display unit SP 2s+1,2tBe coupled to sweep trace SL 2tWith data line DL 2s+1, this display unit SP 2s, 2t+1Be coupled to sweep trace SL 2t+1With data line DL 2s+1, this display unit SP 2s+1,2t+1Be coupled to sweep trace SL 2t+1With data line DL 2s, s is more than or equal to 0 and less than the integer of X/2, t is more than or equal to 0 and less than the integer of Y/2.
2. display panel according to claim 1 is characterized in that this data line DL 2sWith data line DL 2s+1Be to be in the layout of on this display panel in an interlaced mode.
3. display panel according to claim 1 is characterized in that each above-mentioned display unit comprises separately:
Switch has first end that is coupled to corresponding sweep trace, is coupled to second end of respective data lines, and the 3rd end, in order to determine the coupling access status between second end and the 3rd end according to the control of its first end; And
Liquid crystal capacitance is coupled between the 3rd end and common electrical line ball of this switch.
4. display panel according to claim 3 is characterized in that each this display unit also comprises storage capacitors, and it is coupled between the 3rd end and stored voltage line of this switch.
5. display panel according to claim 3 is characterized in that this switch is a thin film transistor (TFT).
6. display panel according to claim 1 is characterized in that this display panel is a display panels.
7. display panel according to claim 1 is characterized in that data line DL 2sWith data line DL 2s+1Polarity opposite, aforementioned s is more than or equal to 0 and less than the integer of X/2.
CNB2005100801585A 2005-06-30 2005-06-30 Display panel Active CN100410982C (en)

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CN100410982C true CN100410982C (en) 2008-08-13

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Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5035671B2 (en) * 2007-05-30 2012-09-26 奇美電子股▲ふん▼有限公司 Display device driving apparatus and driving method
CN102890920B (en) * 2011-07-19 2015-06-03 群康科技(深圳)有限公司 Liquid crystal display device and driving method thereof
TWI607426B (en) * 2017-02-02 2017-12-01 友達光電股份有限公司 Display panel and method for controlling the same
CN107680551B (en) * 2017-11-13 2019-12-24 深圳市华星光电技术有限公司 GOA driving circuit, liquid crystal panel and liquid crystal panel scanning method

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0916132A (en) * 1995-06-28 1997-01-17 Casio Comput Co Ltd Liquid crystal driving device
CN1310434A (en) * 2000-02-03 2001-08-29 三星电子株式会社 Liquid crystal display device and its driving method
CN1388505A (en) * 2001-05-04 2003-01-01 Lg电子株式会社 Scanning structure in display, method for driving display and its producing method
CN1495697A (en) * 2002-08-17 2004-05-12 Lg������ʽ���� Plane display panel
JP2004341134A (en) * 2003-05-14 2004-12-02 Mitsubishi Electric Corp Picture display device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0916132A (en) * 1995-06-28 1997-01-17 Casio Comput Co Ltd Liquid crystal driving device
CN1310434A (en) * 2000-02-03 2001-08-29 三星电子株式会社 Liquid crystal display device and its driving method
CN1388505A (en) * 2001-05-04 2003-01-01 Lg电子株式会社 Scanning structure in display, method for driving display and its producing method
CN1495697A (en) * 2002-08-17 2004-05-12 Lg������ʽ���� Plane display panel
JP2004341134A (en) * 2003-05-14 2004-12-02 Mitsubishi Electric Corp Picture display device

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