WO2017210069A1 - Backplanes for electro-optic displays - Google Patents
Backplanes for electro-optic displays Download PDFInfo
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- WO2017210069A1 WO2017210069A1 PCT/US2017/034378 US2017034378W WO2017210069A1 WO 2017210069 A1 WO2017210069 A1 WO 2017210069A1 US 2017034378 W US2017034378 W US 2017034378W WO 2017210069 A1 WO2017210069 A1 WO 2017210069A1
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Classifications
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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
- G02F1/165—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 translational movement of particles in a fluid under the influence of an applied field
- G02F1/166—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 translational movement of particles in a fluid under the influence of an applied field characterised by the electro-optical or magneto-optical effect
- G02F1/167—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 translational movement of particles in a fluid under the influence of an applied field characterised by the electro-optical or magneto-optical effect by electrophoresis
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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
- G02F1/136286—Wiring, e.g. gate line, drain line
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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
- G02F1/165—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 translational movement of particles in a fluid under the influence of an applied field
- G02F1/1675—Constructional details
- G02F1/1676—Electrodes
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/02—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers
- H01L27/12—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body
- H01L27/1214—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs
- H01L27/124—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs with a particular composition, shape or layout of the wiring layers specially adapted to the circuit arrangement, e.g. scanning lines in LCD pixel circuits
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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
- G02F1/13606—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit having means for reducing parasitic capacitance
-
- 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
- G02F1/136218—Shield electrodes
Definitions
- This invention relates to electro-optic display apparatuses, more particularly, to display backplanes that include thin-film transistor arrays.
- the present invention relates to backplanes for electro-optic displays. More specifically, it is related to display pixel designs where pixel electrode crosstalk may be effectively reduced.
- optical property is typically color perceptible to the human eye, it may be another optical property, such as optical transmission, reflectance, luminescence or, in the case of displays intended for machine reading, pseudo-color in the sense of a change in reflectance of electromagnetic wavelengths outside the visible range.
- gray state is used herein in its conventional meaning in the imaging art to refer to a state intermediate two extreme optical states of a pixel, and does not necessarily imply a black-white transition between these two extreme states.
- E Ink patents and published applications referred to below describe electrophoretic displays in which the extreme states are white and deep blue, so that an intermediate "gray state” would actually be pale blue. Indeed, as already mentioned, the change in optical state may not be a color change at all.
- black and “white” may be used hereinafter to refer to the two extreme optical states of a display, and should be understood as normally including extreme optical states which are not strictly black and white, for example the aforementioned white and dark blue states.
- the term “monochrome” may be used hereinafter to denote a drive scheme which only drives pixels to their two extreme optical states with no intervening gray states.
- WO 02/079869 that some particle-based electrophoretic displays capable of gray scale are stable not only in their extreme black and white states but also in their intermediate gray states, and the same is true of some other types of electro-optic displays.
- This type of display is properly called “multi-stable” rather than bistable, although for convenience the term “bistable” may be used herein to cover both bistable and multi-stable displays.
- impulse is used herein in its conventional meaning of the integral of voltage with respect to time.
- bistable electro-optic media act as charge transducers, and with such media an alternative definition of impulse, namely the integral of current over time (which is equal to the total charge applied) may be used.
- the appropriate definition of impulse should be used, depending on whether the medium acts as a voltage-time impulse transducer or a charge impulse transducer.
- An encapsulated electrophoretic display typically does not suffer from the clustering and settling failure mode of traditional electrophoretic devices and provides further advantages, such as the ability to print or coat the display on a wide variety of flexible and rigid substrates.
- printing is intended to include all forms of printing and coating, including, but without limitation: pre-metered coatings such as patch die coating, slot or extrusion coating, slide or cascade coating, curtain coating; roll coating such as knife over roll coating, forward and reverse roll coating; gravure coating; dip coating; spray coating; meniscus coating; spin coating; brush coating; air knife coating; silk screen printing processes; electrostatic printing processes; thermal printing processes; inkjet printing processes; and other similar techniques.
- the resulting display can be flexible.
- the display medium can be printed (using a variety of methods), the display itself can be made inexpensively.
- microcell electrophoretic display A related type of electrophoretic display is a so-called "microcell electrophoretic display".
- the charged particles and the suspending fluid are not encapsulated within microcapsules but instead are retained within a plurality of cavities formed within a carrier medium, typically a polymeric film.
- a carrier medium typically a polymeric film.
- electro-optic displays are bistable and are typically used in a reflective mode, although as described in certain of the aforementioned patents and applications, such displays may be operated in a "shutter mode" in which the electro-optic medium is used to modulate the transmission of light, so that the display operates in a transmissive mode.
- Liquid crystals including polymer-dispersed liquid crystals, are, of course, also electro-optic media, but are typically not bistable and operate in a transmissive mode. Certain embodiments of the invention described below are confined to use with reflective displays, while others may be used with both reflective and transmissive displays, including conventional liquid crystal displays.
- a display is reflective or transmissive, and whether or not the electro- optic medium used is bistable, to obtain a high-resolution display, individual pixels of a display must be addressable without interference from adjacent pixels.
- One way to achieve this objective is to provide an array of non-linear elements, such as transistors or diodes, with at least one non-linear element associated with each pixel, to produce an "active matrix" display.
- An addressing or pixel electrode, which addresses one pixel, is connected to an appropriate voltage source through the associated non-linear element.
- the pixel electrode is connected to the drain of the transistor, and this arrangement will be assumed in the following description, although it is essentially arbitrary and the pixel electrode could be connected to the source of the transistor.
- the pixels are arranged in a two- dimensional array of rows and columns, such that any specific pixel is uniquely defined by the intersection of one specified row and one specified column.
- the sources of all the transistors in each column are connected to a single column electrode, while the gates of all the transistors in each row are connected to a single row electrode; again the assignment of sources to rows and gates to columns is conventional but essentially arbitrary, and could be reversed if desired.
- the row electrodes are connected to a row driver, which essentially ensures that at any given moment only one row is selected, i.e., that there is applied to the selected row electrode a voltage such as to ensure that all the transistors in the selected row are conductive, while there is applied to all other rows a voltage such as to ensure that all the transistors in these non-selected rows remain non- conductive.
- the column electrodes are connected to column drivers, which place upon the various column electrodes voltages selected to drive the pixels in the selected row to their desired optical states.
- a transistor includes a gate electrode, an insulating dielectric layer, a semiconductor layer and source and drain electrodes.
- Application of a voltage to the gate electrode provides an electric field across the dielectric layer, which dramatically increases the source-to-drain conductivity of the semiconductor layer. This change permits electrical conduction between the source and the drain electrodes.
- the gate electrode, the source electrode, and the drain electrode are patterned.
- the semiconductor layer is also patterned in order to minimize stray conduction (i.e., crosstalk) between neighboring circuit elements.
- Liquid crystal displays commonly employ amorphous silicon (“a-Si”), thin-film transistors (“TFT's”) as switching devices for display pixels. Such TFT's typically have a bottom-gate configuration. Within one pixel, a thin film capacitor typically holds a charge transferred by the switching TFT. Electrophoretic displays can use similar TFT's with capacitors, although the function of the capacitors differs somewhat from those in liquid crystal displays; see the aforementioned copending Application Serial No. 09/565,413, and Publications 2002/0106847 and 2002/0060321. Thin film transistors can be fabricated to provide high performance. Fabrication processes, however, can result in significant cost.
- pixel electrodes are charged via the TFT's during a line address time.
- a TFT is switched to a conducting state by changing an applied gate voltage. For example, for an n-type TFT, a gate voltage is switched to a "high" state to switch the TFT into a conducting state.
- the pixel electrode typically exhibits a voltage shift when the select line voltage is changed to bring the TFT channel into depletion.
- the pixel electrode voltage shift occurs because of the capacitance between the pixel electrode and the TFT gate electrode.
- the voltage shift can be modeled as: where Cgp is the gate-pixel capacitance, C p the pixel capacitance, C s the storage capacitance and ⁇ is the fraction of the gate voltage shift when the TFT is effectively in depletion. This voltage shift is often referred to as "gate feedthrough".
- Gate feedthrough can be compensated by shifting the top plane voltage (the voltage applied to the common front electrode) by an amount AV P . Complications arise, however, because AV P varies from pixel to pixel due to variations of Cgp from pixel to pixel. Thus, voltage biases can persist even when the top plane is shifted to compensate for the average pixel voltage shift. The voltage biases can cause errors in the optical states of pixels, as well as degrade the electro-optic medium.
- Variations in Cgp are caused, for example, by misalignment between the two conductive layers used to form the gate and the source-drain levels of the TFT; variations in the gate dielectric thickness; and variations in the line etch, i.e., line width errors.
- additional voltage shifts may be caused by crosstalk occurring between a data line supplying driving waveforms to the display pixel and the pixel electrode. Similar to the voltage shift described above, crosstalk between the data line and the pixel electrode can be caused by capacitive coupling between the two even when the display pixel is not being addressed (e.g., associated pixel TFT in depletion). Such crosstalk can result in voltage shifts that are undesirable because it can lead to optical artifacts such as image streaking.
- the voltage shift between the data line and the pixel electrode may be reduced by altering the geometrical dimensions of the pixel electrode and/or the data line. For example, the size of the pixel electrode may be reduced to enlarge the gap space between the electrode and the data line.
- the electrical properties of the material between the pixel electrode and the data line may be altered to reduce crosstalk. For example, one may increase the thickness of the insulating thin film between the pixel electrode and its neighboring data lines to reduce capacitive coupling.
- these methods can be expensive to implement and in some instances impossible due to design constraints such as device dimensional limitations. As such, there exists a need to reduce crosstalk in display pixels that are both easy and inexpensive to implement.
- the present invention provides means to reduce crosstalk and voltage shifts in display pixels that can be conveniently applied to presently available display backplanes.
- This invention provides a backplane for an electro-optic display
- the backplane may include a data line, a transistor, and a pixel electrode connected to the data line via the transistor, where the pixel electrode may be positioned adjacent to part of the data line so as to create a data line/pixel electrode capacitance.
- the backplane may further include a shield electrode disposed adjacent to at least part of the data line so as to reduce the data line/pixel electrode capacitance.
- Figure 1A illustrates a top view of a display pixel in accordance with the subject matter disclosed herein;
- Figure IB illustrates a cross-sectional view of the display pixel presented in Figure 1 A in accordance with the subject matter disclosed herein;
- Figure 2A and Figure 2B illustrate a display pixel with shield electrodes in accordance with the subject matter presented herein;
- Figure 3 illustrates a cross-sectional view of another embodiment of a display pixel in accordance with the subject matter presented herein;
- Figure 4 illustrates a top view of yet another embodiment of a display pixel in accordance with the subject matter presented herein.
- the present invention provides a display backplane for electro-optic displays where crosstalk between pixel electrodes and data lines are reduced.
- Such backplanes may include display pixels where crosstalk due to capacitive couplings can be shielded by additional shield electrodes.
- the shield electrodes may be positioned on the same device layer as the data lines and/or in the gap spaces between the pixel electrodes and the data lines.
- the backplanes described herein may be extended to an electro-optic display comprising a layer of electro-optic medium disposed on the backplane and covering the pixel electrode.
- an electro-optic display may use any of the types of electro-optic medium previously discussed, for example, the electro-optic medium may be a liquid crystal, a rotating bichromal member or electrochromic medium, or an electrophoretic medium, preferably an encapsulated electrophoretic medium.
- an electrophoretic medium when an electrophoretic medium is utilized, a plurality of charged particles can move through a suspending fluid under the influence of an electric field.
- Such electrophoretic displays can have attributes of good brightness and contrast, wide viewing angles, state bistability, and low power consumption when compared with liquid crystal displays.
- Figure 1A illustrates a top view of a display pixel 100 using a TFT as means for switching.
- the pixel 100 can include a gate line 102 functioning as a source line to the display pixel and configured to supply switching signals to a pixel electrode 104.
- a data line 106 may be electrically coupled to the pixel electrode 104 and the gate line 102 for supplying driving signals (e.g., waveforms) to the pixel electrode 104.
- another data line 108 may be positioned adjacent to the pixel electrode 104 on an opposite side away from the data line 104 for providing driving waveforms to a neighboring pixel electrode (not shown).
- Figure IB illustrates a cross-sectional view of the display pixel 100 presented in Figure 1A.
- the display pixel 100 may include three or more device layers 110, 112, 114.
- the pixel electrode 104 may be positioned on a first device layer 110 and the data lines 106, 108 may be positioned on a third device layer 114, where the first 110 and third 114 device layers are insulated by a second device layer 112.
- the second device layer 112 may include dielectric materials such as silicon-nitride or other comparable dielectric material such that the first and third device layers are electrically insulated from each other.
- driving voltage signals i.e., waveforms
- problems can arise when the display pixel 100 is not being addressed (i.e., associated pixel TFT in depletion) and yet capacitive coupling between the data lines 106, 108 and the pixel electrode 104 is still causing voltage values of the pixel electrode 104 to shift.
- electric fields can be coupled between the data lines 106, 108 and the pixel electrode 104 through the second dielectric device layer 112.
- the coupling of the electric fields between the data lines 106, 108 and the pixel electrode 104 creates undesirable crosstalk and such crosstalk can lead to unwanted optical transitions.
- One way to reduce such crosstalk and discussed in more detail below is to position shield electrodes between the data lines 106, 108 and the pixel electrode 104.
- FIGS. 2A and 2B illustrate another embodiment of a TFT pixel 200 where capacitive coupling between data lines 202, 204 and the pixel electrode 206 may be reduced by placing one or more shield electrodes 212, 214 into the gap spaces 208 and 210.
- the shield electrodes 212, 214 may be placed next to the data lines 202, 204 and tied to a voltage source (e.g., ground), where the shield electrodes 212, 214 can hold substantially constant voltage values during active-matrix scans. As illustrated in Figures 2 A and 2B, the shield electrodes 212, 214 may be positioned in proximity to the data lines 202, 204, and on the same device level as the data lines 202, 204. Furthermore, the shield electrodes 212, 214 can substantially be of the same geometric shape, or even mirror images to the data lines 202, 204, even though other geometric shapes may be conveniently adopted so long as a reduction in the crosstalk can be achieved.
- a voltage source e.g., ground
- the data lines 202, 204 are positioned closer to the neighboring shield electrodes 212, 214 than to the pixel electrode 206, and a larger portion of the electrical field from the data lines 202, 204 will instead be coupled to the shield electrodes 212, 214.
- this diversion of the electric field may be due to the fact that there is less dielectric material between the data lines 202, 204 and the shield electrodes 212, 214, and as such the electric fields have easier travel paths from the data lines 202, 204 to the shield electrodes 212, 214 than to the pixel electrode 206.
- the mutual capacitance between the pixel electrode 206 and nearby data lines 202, 204 is reduced by the presence of the shield electrodes 212, 214.
- the result is that, when a data line voltage shifts, a nearby pixel electrode will experience less voltage change through capacitive coupling because of the presence of the shield electrodes.
- the placement and geometrical dimensions of the shield electrodes may be varied so long as the leakage capacitance between the pixel electrode and the data lines are reduced.
- the shield electrodes may be positioned entirely in the gap spaces between the pixel electrode and neighboring controlling data lines, such that there is no vertical overlapping between the pixel electrode and the data lines.
- the shield electrodes may be positioned in a different device layer than the data lines. Furthermore, the dimensions of the shield electrodes may be sufficiently large (e.g., wider than the data lines) to completely shield the data lines from the pixel electrode in the vertical direction, as illustrated in Figure 3.
- Figure 3 illustrates a cross-sectional view of a pixel electrode 300 where the shield electrodes 302, 304 are positioned on the second device level 306, completely shielding data lines 308, 310 below on the third device level 312 from the pixel electrode 314.
- a display pixel 400 may include additional data lines 402, 404 positioned in parallel to the gate line 406.
- the additional data lines 402, 404 may be positioned on a different device layer than the data lines 408, 410 and may be connected to the data lines 408, 410 through one or more vias 412, 414.
- shield electrodes (not shown) can be optionally placed between the additional data lines 402, 404 and the pixel electrode 416 to reduce crosstalk.
- the shield electrodes described in the previous embodiments may be coupled to a fixed voltage (e.g., ground) during the active- matrix scan to maintain a substantially constant voltage value
- the shield electrodes may be configured to possess strong capacitive coupling to other substantially fixed-voltage electrodes. In this fashion, the shield electrodes will still be able to maintain a sufficiently stable voltage and provide reduction to the crosstalk while not be actively driven by external electronics.
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Abstract
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Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020187034578A KR20180131639A (en) | 2016-05-31 | 2017-05-25 | Backplanes for electro-optic displays |
CN201780031022.6A CN109154758A (en) | 2016-05-31 | 2017-05-25 | Backboard for electro-optic displays |
AU2017274508A AU2017274508A1 (en) | 2016-05-31 | 2017-05-25 | Backplanes for electro-optic displays |
EP17807261.7A EP3465339A4 (en) | 2016-05-31 | 2017-05-25 | Backplanes for electro-optic displays |
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- 2017-05-25 WO PCT/US2017/034378 patent/WO2017210069A1/en unknown
- 2017-05-25 US US15/604,797 patent/US10527899B2/en active Active
- 2017-05-25 CN CN201780031022.6A patent/CN109154758A/en active Pending
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Also Published As
Publication number | Publication date |
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AU2017274508A1 (en) | 2018-11-22 |
US20170343876A1 (en) | 2017-11-30 |
KR20180131639A (en) | 2018-12-10 |
US10527899B2 (en) | 2020-01-07 |
JP2019518249A (en) | 2019-06-27 |
TWI688932B (en) | 2020-03-21 |
CN109154758A (en) | 2019-01-04 |
TW201810229A (en) | 2018-03-16 |
EP3465339A4 (en) | 2019-04-17 |
EP3465339A1 (en) | 2019-04-10 |
HK1258890A1 (en) | 2019-11-22 |
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