CN105372893A - Pixel driving circuit, array substrate and liquid crystal display device - Google Patents
Pixel driving circuit, array substrate and liquid crystal display device Download PDFInfo
- Publication number
- CN105372893A CN105372893A CN201510983531.1A CN201510983531A CN105372893A CN 105372893 A CN105372893 A CN 105372893A CN 201510983531 A CN201510983531 A CN 201510983531A CN 105372893 A CN105372893 A CN 105372893A
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- transistor
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- driving circuit
- select lines
- liquid crystal
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
- G02F1/1362—Active matrix addressed cells
- G02F1/136227—Through-hole connection of the pixel electrode to the active element through an insulation layer
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
- G02F1/1362—Active matrix addressed cells
- G02F1/136286—Wiring, e.g. gate line, drain line
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
- G02F1/1362—Active matrix addressed cells
- G02F1/1368—Active matrix addressed cells in which the switching element is a three-electrode device
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Liquid Crystal (AREA)
- Liquid Crystal Display Device Control (AREA)
Abstract
The invention discloses a pixel driving circuit which comprises a pixel driving circuit body, wherein the pixel driving circuit body comprises a first gating line, a second gating line, a data line, a first transistor, a second transistor, a third transistor and a pixel electrode. The invention further comprises an array substrate capable of displaying pixels by utilizing the pixel driving circuit and a liquid crystal display device. Through adoption of a structure comprising the three transistors, the switching circuit resistance can be increased, the leakage current is reduced, and keeping of a display image is facilitated; under a low-frequency driving signal, the deterioration effect on the transistors is reduced; the problems that the turn-off time of the transistors is prolonged when the frequency of a display module is reduced in the conventional display panel, and the transistors are deteriorated and the leakage current is increased after continuous powering-up can be solved.
Description
Technical field
The present invention relates to field of liquid crystal display, particularly relate to a kind of pixel-driving circuit, array base palte and liquid crystal indicator.
Background technology
Along with popularizing of wearable product, the power consumption requirements of user to product is more and more higher, and wherein display module is the factor affecting power consumption.In the prior art, because of transistor be in for a long time unlatching or closed condition can cause transistor deterioration, affect the normal display of display module, and use driving signal frequency lower, the running time of select lines is longer, transistor be in unlatching or closed condition more of a specified duration, can transistor deterioration be caused.
Summary of the invention
In order to solve above-mentioned the deficiencies in the prior art, the invention provides a kind of novel pixel-driving circuit of knowing clearly, it, by three transistor arrangements, can increase on-off circuit resistance, reduces leakage current, is conducive to the maintenance of display frame; Under low frequency drive singal, reduce and the deterioration of transistor is affected; Solve in existing display panel when reducing the frequency of display module, the transistor shut-in time increases, and continues to power up rear transistor deterioration, the problem that leakage current increases.Present invention also offers a kind of array base palte and the liquid crystal indicator that use this display pixel.
Technical matters to be solved by this invention is achieved by the following technical programs:
A kind of pixel-driving circuit, it comprises: the first select lines, the second select lines, data line, the first transistor, transistor seconds, third transistor and pixel electrode, wherein,
Described the first transistor, it has the gate terminal of connection second select lines, the source terminal of connection data line;
Described transistor seconds, its have connection first select lines gate terminal, connect the drain electrode end of pixel electrode and connect the source terminal of drain electrode end of described the first transistor;
Described third transistor, it has the drain electrode end of the pixel electrode connecting light-emitting component, the source terminal connecting the drain electrode end of described the first transistor and the source terminal of described transistor seconds and gate terminal.
Further, described the first transistor and/or transistor seconds and/or third transistor are A-Si, LTPS, metal oxide, organic tft.
A kind of array base palte, it comprises several pixel cells of matrix distribution, also comprises above-mentioned pixel-driving circuit.
A kind of liquid crystal indicator, comprises above-mentioned array base palte.
Further, the display mode of described display panel be normal positive display mode, normal black display mode, through pattern, semi-transparent semi-reflecting pattern, be all-trans in pattern any one.
The present invention has following beneficial effect: by three transistor arrangements, can increase on-off circuit resistance, reduces leakage current, is conducive to the maintenance of display frame; Under low frequency drive singal, reduce and the deterioration of transistor is affected; Solve in existing display panel when reducing the frequency of display module, the transistor shut-in time increases, and continues to power up rear transistor deterioration, the problem that leakage current increases.Use driven frequency (as 60Hz) to open one of them transistor separately in anti-deteriorated district, can prevent transistor deterioration like this, transistor can also play closing function simultaneously, prevents pixel from leaking electricity, can not affect display quality.The channel width-over-length ratio example of three transistors can adjust according to Pixel Dimensions.The transistor operation of this display pixel includes but not limited to A-Si(monocrystalline silicon), LTPS(low temperature polycrystalline silicon), metal oxide, organic tft.This display pixel is applicable but be not limited to normal positive display mode, normal black display mode, through pattern, semi-transparent semi-reflecting pattern, be all-trans the display panels such as pattern.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of pixel-driving circuit of the present invention;
Fig. 2 is the drive singal schematic diagram of Fig. 1 pixel-driving circuit.
Embodiment
Below in conjunction with drawings and Examples, the present invention will be described in detail.
Embodiment 1
Fig. 1 shows the pixel-driving circuit of a preferred embodiment of the present invention, for liquid crystal indicator, comprise the first select lines GateLine1(GL1), the second select lines GateLine2(GL2), data line SourceLine(SL), the first transistor M1, transistor seconds M2, third transistor M3 and pixel electrode.
Described the first transistor M1 is in response to from the second select lines GateLine2(GL2) the second gating signal and be controlled, and described the first transistor M1 is connected to data line SourceLine(SL) and first node n1 between, namely, be switched on or switched off the first transistor M1 according to the logic state of the second gating signal, and make when the first transistor M1 connects data line SL and first node n1 be electrically connected to each other.Described the first transistor M1 has the gate terminal being connected to the second select lines GL2, is connected to the source terminal of data line SL and is connected to the drain electrode end of first node n1.
Described transistor seconds M2 phase is in response to from the first select lines GateLine1(GL1) the first gating signal and be controlled, and described transistor seconds M2 is connected between first node n1 and Section Point n2, namely, be switched on or switched off transistor seconds M2 according to the logic state of the first gating signal, and first node n1 and Section Point n2 is electrically connected to each other when transistor seconds M2 connects.Described transistor seconds M2 has the gate terminal being connected to the first select lines GL1, is connected to the source terminal of first node n1 and is connected to the drain electrode end of Section Point n2.
Described third transistor M3 is controlled in response to the signal being applied to first node n1, and third transistor M3 is connected between first node n1 and Section Point n2, namely, logic state according to the voltage being applied to first node n1 is switched on or switched off third transistor M3, and when third transistor M3 connects, first node n1 and Section Point n2 is electrically connected to each other.Described third transistor M3 has the gate terminal and source terminal that are connected to first node n1, is connected to the drain electrode end of Section Point n2.
Described pixel electrode and Section Point n2 are electrically connected to each other.
It should be noted that, all crystals pipe operation includes but not limited to A-Si(monocrystalline silicon), LTPS(low temperature polycrystalline silicon), metal oxide, organic tft.The channel width-over-length ratio example of three transistors M1, M2 and M3 can adjust according to Pixel Dimensions.
The principle of work of present invention pixel driving circuit is as follows: when the first select lines GL1 and the second select lines GL2 is 0 simultaneously, is namely in off-state simultaneously, then closes this pixel, and transistor seconds M2 and third transistor M3 helps electric capacity storing information; When the first select lines GL1 be the 0, second select lines GL2 is 1, high level can be write separately, facilitate sequential to realize; When the first select lines GL1 and the second select lines GL2 is 1 simultaneously, high level or low level can be write, realize write-in functions; When the second select lines GL2 is 0, then close this pixel.As shown in Figure 2, within each picture frame display cycle, the driving of present invention pixel driving circuit is divided into display to drive and anti-deterioration drives, display type of drive is for working as the first select lines GL1 and the second select lines GL2 high input voltage signal simultaneously, then waveform has during overlap and could write data, and namely lap is as effectively opening district; And anti-deterioration drives type of drive for the high input voltage signal when the first select lines GL1 is different with the second select lines GL2, then there is not overlap in waveform, namely driven frequency (as 60Hz) is used to open one of them transistor separately in anti-deteriorated district, transistor deterioration can be prevented like this, transistor can also play closing function simultaneously, prevent pixel from leaking electricity, can not display quality be affected.
It should be noted that, the cut-in voltage that anti-deterioration drives can be followed the cut-in voltage of same viewing area or be less than the cut-in voltage of viewing area.
Because pixel driver frequency is lower, transistor is the most of the time be in low-voltage closed condition, can cause transistor deterioration like this.In existing display pixel when reducing the frequency of display module, the transistor shut-in time increases, transistor deterioration is caused after continuing to power up, leakage current increases, and the present invention is by three transistor arrangements, can increase on-off circuit resistance, reduce leakage current, be conducive to the maintenance of display frame, under low frequency drive singal, reduce and the deterioration of transistor is affected.Use driven frequency (as 60Hz) to open one of them transistor separately in anti-deteriorated district, can prevent transistor deterioration like this, transistor can also play closing function simultaneously, prevents pixel from leaking electricity, can not affect display quality.
Embodiment 2
A kind of array base palte, it comprises several pixel cells of matrix distribution, also comprises pixel-driving circuit as described in example 1 above.
The array base palte of the present embodiment, by three transistor arrangements, can increase on-off circuit resistance, reduces leakage current, is conducive to the maintenance of display frame, under low frequency drive singal, reduces and affect the deterioration of transistor.Use driven frequency (as 60Hz) to open one of them transistor separately in anti-deteriorated district, can prevent transistor deterioration like this, transistor can also play closing function simultaneously, prevents pixel from leaking electricity, can not affect display quality.
Embodiment 3
A kind of liquid crystal indicator, comprises array base palte as described in Example 2.This liquid crystal indicator is specifically as follows: any product or parts with Presentation Function such as liquid crystal panel, mobile phone, panel computer, televisor, viewing area, notebook computer, digital album (digital photo frame) and navigating instrument.The display mode of described liquid crystal indicator is normal positive display mode, normal black display mode, through pattern, semi-transparent semi-reflecting pattern, be all-trans in pattern any one.
The liquid crystal indicator of the present embodiment, by three transistor arrangements, can increase on-off circuit resistance, reduces leakage current, is conducive to the maintenance of display frame, under low frequency drive singal, reduces and affect the deterioration of transistor.Use driven frequency (as 60Hz) to open one of them transistor separately in anti-deteriorated district, can prevent transistor deterioration like this, transistor can also play closing function simultaneously, prevents pixel from leaking electricity, can not affect display quality.
The above embodiment only have expressed embodiments of the present invention; it describes comparatively concrete and detailed; but therefore can not be interpreted as the restriction to the scope of the claims of the present invention; in every case the technical scheme adopting the form of equivalent replacement or equivalent transformation to obtain, all should drop within protection scope of the present invention.
Claims (5)
1. a pixel-driving circuit, it comprises: the first select lines, the second select lines, data line, the first transistor, transistor seconds, third transistor and pixel electrode, wherein,
Described the first transistor, it has the gate terminal of connection second select lines, the source terminal of connection data line;
Described transistor seconds, its have connection first select lines gate terminal, connect the drain electrode end of pixel electrode and connect the source terminal of drain electrode end of described the first transistor;
Described third transistor, it has the drain electrode end of the pixel electrode connecting light-emitting component, the source terminal connecting the drain electrode end of described the first transistor and the source terminal of described transistor seconds and gate terminal.
2. pixel-driving circuit according to claim 1, is characterized in that, described the first transistor and/or transistor seconds and/or third transistor are A-Si, LTPS, metal oxide, organic tft.
3. an array base palte, it comprises several pixel cells of matrix distribution, also comprises pixel-driving circuit as claimed in claim 1.
4. a liquid crystal indicator, comprises array base palte as claimed in claim 3.
5. liquid crystal indicator according to claim 4, is characterized in that, the display mode of described display panel is normal positive display mode, normal black display mode, through pattern, semi-transparent semi-reflecting pattern, be all-trans in pattern any one.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510983531.1A CN105372893B (en) | 2015-12-24 | 2015-12-24 | A kind of pixel-driving circuit, array substrate and liquid crystal display device |
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| CN201510983531.1A CN105372893B (en) | 2015-12-24 | 2015-12-24 | A kind of pixel-driving circuit, array substrate and liquid crystal display device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106782267A (en) * | 2017-01-03 | 2017-05-31 | 京东方科技集团股份有限公司 | A kind of shift register, its driving method, gate driving circuit and display panel |
| CN108873530A (en) * | 2018-07-30 | 2018-11-23 | 京东方科技集团股份有限公司 | A kind of array substrate, display panel and display device |
| CN108962158A (en) * | 2018-06-15 | 2018-12-07 | 信利半导体有限公司 | A kind of the ULP gate driving circuit and its control circuit of 3Tr |
| WO2019076116A1 (en) * | 2017-10-16 | 2019-04-25 | 京东方科技集团股份有限公司 | Gate drive circuit, shift register and drive control method therefor |
| CN110930930A (en) * | 2019-12-26 | 2020-03-27 | 信利(仁寿)高端显示科技有限公司 | Low-power-consumption pixel latch circuit and display device |
| DE102016218187B4 (en) * | 2016-03-31 | 2020-12-24 | Shanghai Tianma AM-OLED Co., Ltd. | Array substrate and manufacturing method, display panel and display device |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| DE102016218187B4 (en) * | 2016-03-31 | 2020-12-24 | Shanghai Tianma AM-OLED Co., Ltd. | Array substrate and manufacturing method, display panel and display device |
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| CN108962158A (en) * | 2018-06-15 | 2018-12-07 | 信利半导体有限公司 | A kind of the ULP gate driving circuit and its control circuit of 3Tr |
| CN108873530A (en) * | 2018-07-30 | 2018-11-23 | 京东方科技集团股份有限公司 | A kind of array substrate, display panel and display device |
| CN110930930A (en) * | 2019-12-26 | 2020-03-27 | 信利(仁寿)高端显示科技有限公司 | Low-power-consumption pixel latch circuit and display device |
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| CN105372893B (en) | 2019-01-18 |
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