CN100573248C - Display panel and comprise its electrooptical device - Google Patents
Display panel and comprise its electrooptical device Download PDFInfo
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- CN100573248C CN100573248C CNB2007101077284A CN200710107728A CN100573248C CN 100573248 C CN100573248 C CN 100573248C CN B2007101077284 A CNB2007101077284 A CN B2007101077284A CN 200710107728 A CN200710107728 A CN 200710107728A CN 100573248 C CN100573248 C CN 100573248C
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Abstract
The invention provides a kind of display panel and comprise its electrooptical device.This display panel comprises a liquid crystal layer, a plurality of driving circuit, a plurality of pliability circuit diaphragm and at least one printed circuit board (PCB); Liquid crystal layer is arranged between one first substrate and one second substrate; Wherein, first substrate has a viewing area and at least one neighboring area adjacent to the viewing area, and second substrate has at least one common electrode; Driving circuit in series is arranged on the neighboring area, and is divided into many groups; Each pliability circuit diaphragm in a plurality of pliability circuit diaphragms is electrically connected at every group of driving circuit respectively; Printed circuit board (PCB) is electrically connected at pliability circuit diaphragm, and transmits at least two different common voltages respectively on the common electrode of part by pliability circuit diaphragm.By the present invention, can reduce the degree of display panel film flicker phenomenon, promote the display quality of display panel, reduce the size and the number of plies of printed circuit board (PCB), shorten the size and the quantity of pliability circuit diaphragm, reduce production costs.
Description
Technical field
The invention relates to a kind of display panel and comprise its electrooptical device, particularly can transmit at least two different common voltages respectively in the display panel with tandem driving circuit of common electrode and comprise its electrooptical device relevant for a kind of.
Background technology
In the epoch now that development in science and technology is maked rapid progress, display panel has become a part indispensable in modern's daily life.Such as the electronic installation that is often seen as TV, computer screen, personal digital assistant and mobile phone etc., all is to use display panel and allow the modern be so fond that will not let out of one's hand, and it is many to promote modern's enjoyment of lying fallow.
With display panels, it comprises a thin film transistor base plate, a colored filter substrate, a liquid crystal layer, a printed circuit board (PCB) and a plurality of pliability circuit diaphragm.Liquid crystal layer is arranged between thin film transistor base plate and the colored filter substrate.In thin film transistor base plate, it comprises a plurality of pixels, and each pixel is by arbitrary sweep trace and arbitrary data line is interlaced and definition is come out.These a little sweep traces are electrically connected at accordingly and are arranged at a plurality of scan drive circuits, and these a little data lines are electrically connected at accordingly and are arranged at a plurality of data drive circuits.Wherein, these a little data drive circuits are to be electrically insulated from each other.Therefore, printed circuit board (PCB) transmits signal by each pliability circuit diaphragm and gives a corresponding data drive circuit.Generally speaking, corresponding data driving circuit of pliability circuit diaphragm.Printed circuit board (PCB) transmits signal by a pliability circuit diaphragm and gives scan drive circuit.Each pixel comprises a thin film transistor (TFT) and a pixel electrode.Thin film transistor (TFT) has a grid, a drain electrode and an one source pole, and grid, drain electrode and source electrode are electrically connected at corresponding one scan line, a pixel electrode and a data line respectively.When scan drive circuit provides sweep signal and opens the grid of each row pixel in regular turn, data voltage by the data line transmission will input to pixel electrode by the thin film transistor (TFT) that is in open mode of each pixel, makes pixel electrode obtain a pixel voltage.
In colored filter substrate, it comprises a colored filter and community electrode at least, and common electrode covers colored filter.Common electrode electrically connects by the circuit on elargol or gold goal and the thin film transistor base plate in its periphery, printed circuit board (PCB) is by circuit and elargol or gold goal on the pliability circuit diaphragm, thin film transistor base plate, transmits one group of fixing common voltage from the periphery of common electrode and gives common electrode.Be folded in the liquid crystal layer between common electrode and the pixel electrode, can in each pixel, obtain corresponding cross-pressure (being the voltage difference between pixel voltage and the common voltage) and the rotation of generation liquid crystal molecule.Therefore, and then under the situation that provides light source to display panel, making each pixel produce needed brightness changes.If putting on the electric field of liquid crystal layer all is unidirectional words, liquid crystal molecule can be because of long-time in the deterioration that produces ordered state with a kind of rotation direction.Produce the problem of above-mentioned rotation deterioration for fear of liquid crystal layer, therefore industry proposes a kind of type of drive (inverse driving method) of data voltage reversal of poles, alternately offer same pixel in the different time interval with positive polarity data voltage and negative polarity data voltage, with pixel voltage as each pixel.
Yet, after pixel electrode obtains pixel voltage, in grid is closed,, will produce feedthrough effect (feed-through effect) owing to have the cause of stray capacitance between grid and the drain electrode.And then cause pixel voltage when grid is closed, to descend a little therefore, because of the feedthrough effect.So in fact the pixel voltage that pixel electrode received can hang down a bit than the data voltage that data line transmitted.In addition, sweep trace can because of resistance own and with other adjacent conductor between stray capacitance, and the generation gate delay (gate delay) phenomenon.That is to say that far away more from scan drive circuit on same sweep trace, the degree of its gate delay is serious more.Therefore, in same row pixel, from scan drive circuit pixel far away more, can be serious more because of gate delay (gate delay), and make that the situation of voltage wave shape distortion of pixel electrode is serious more.In addition, because common electrode receives common voltage from its edge, the electricresistance effect of common electrode itself will cause the voltage of the middle section of common electrode can be also littler than the voltage of fringe region.Because display panel only provides a common voltage to common electrode traditionally, yet drive under the situation of pixel in type of drive with data voltage reversal of poles, the phenomenon that the phenomenon of above-mentioned gate delay and the middle section of common electrode are also littler than the voltage of fringe region, to make display panel produce film flicker (flicker), and the degree of flicker is inhomogeneous.And along with size of display panels is increasing, the unevenness of film flicker is more serious.On the other hand, display panel will quite be wasted production cost with the corresponding data driving circuit of a pliability circuit diaphragm on making traditionally.
Summary of the invention
In view of this, purpose of the present invention is providing a kind of display panel exactly, it can transmit at least two different common voltages respectively in the design of common electrode, can reduce the degree that display panel produces film flicker, promotes the display quality of display panel widely.
According to purpose of the present invention, a kind of display panel is proposed, comprise a liquid crystal layer, a plurality of driving circuit, a plurality of pliability circuit diaphragm and at least one printed circuit board (PCB); Liquid crystal layer is arranged between one first substrate and one second substrate; Wherein, first substrate has a viewing area and at least one neighboring area adjacent to the viewing area, and second substrate has at least one common electrode; A plurality of driving circuits in series are arranged on the neighboring area, and are divided into many group driving circuits; Each pliability circuit diaphragm in a plurality of pliability circuit diaphragms is electrically connected at every group of described driving circuit respectively; Printed circuit board (PCB) is electrically connected at pliability circuit diaphragm, and by pliability circuit diaphragm, in order to transmit at least two different common voltages respectively on the common electrode of part; Also comprise a plurality of contact mats, be arranged on the described neighboring area; Each described driving circuit has at least one internal connection line road; Also comprise at least one conduction, be arranged on the described contact mat of part, be electrically connected at described common electrode; Also comprise at least one external connection line road, correspondence is arranged at arbitrary described contact mat and is provided with the sub-part of described conduction, and is electrically connected at described internal connection line road and described pliability circuit diaphragm one of them.
In sum, what the present invention disclosed transmits at least two different common voltages respectively in the design of common electrode, to reduce the degree of display panel film flicker phenomenon, to promote the display quality of display panel widely.Wherein, the film flicker phenomenon is when driving pixel with the type of drive of data voltage reversal of poles, and the middle section that display panel has gate delay and/or a common electrode takes place than the situation of the voltage also little (being also referred to as common electrode postpones) of fringe region.In addition, tandem data drive circuit design of the present invention can reduce the size and the number of plies of printed circuit board (PCB), and shortens the size and the usage quantity of pliability circuit diaphragm, and reduces many production costs.
Description of drawings
Fig. 1 is the synoptic diagram according to the display panel of preferred embodiment of the present invention;
Fig. 2 is the equivalent circuit diagram of single pixel in the viewing area among Fig. 1;
Fig. 3 is the transversary sectional view of the single pixel among Fig. 2;
Fig. 4 A is the distribution plan of the best common electrode of the position of the different common electrodes of experiment gained;
Fig. 4 B is in order to indicate the position of 1 to the 7 pairing viewing area 27, position among Fig. 4 A;
Fig. 5 A is grid voltage Vg under the ideal state and the oscillogram of pixel voltage Vp;
Fig. 5 B is the oscillogram that grid voltage Vg ' Yu the pixel voltage Vp ' of gate delay phenomenon are arranged;
View when Fig. 6 has two common voltage districts for the common electrode according to preferred embodiment of the present invention;
View when Fig. 7 has three common voltage districts for the common electrode according to preferred embodiment of the present invention;
View when Fig. 8 has four common voltage districts for the common electrode according to preferred embodiment of the present invention;
Fig. 9 is the calcspar of the electrooptical device that is combined into by display panel and electronic component.
The main element symbol description:
20: display panel 21: liquid crystal layer
22: driving circuit 22a: data drive circuit
22a1: first group of data drive circuit
22a2: second group of data drive circuit
22b: scan drive circuit
23: pliability circuit diaphragm 24: printed circuit board (PCB)
26: the second substrates of 25: the first substrates
27: the viewing area
27a: common voltage generator 27b: power circuit
27c: integrated circuit component 27d: connectivity port
28: the neighboring area
28a: the first district 28b: second district
29: common electrode
29a, 29c, 29f: high common voltage district
29b, 29e, 29i: low common voltage district
29d, 29g: inferior high common voltage district
29h: inferior low common voltage district
31: contact mat 32: conduction
33: the internal connection line road
34,34 (1), 35: the external connection line road
34 (2): connection line
36: external system 37: pixel electrode
38 (1)～38 (4): the edge
40: electronic component 50: electrooptical device
402,404,406: curve 502: pulse
C
1c: liquid crystal capacitance C
St: storage capacitors
G: grid P: pixel
S: source S 1, S2: sweep trace
T: thin film transistor (TFT) V1, V2, Vcom: common voltage
Vdd: voltage Vp: pixel voltage
X: data-signal Y: an ancient woman's ornament agate signal
Z: power supply signal
Embodiment
For above-mentioned purpose of the present invention, feature and advantage can be become apparent, a preferred embodiment cited below particularly, and cooperate appended graphicly, be described in detail below:
Please be simultaneously with reference to Fig. 1～Fig. 3, Fig. 1 is the synoptic diagram according to the display panel of preferred embodiment of the present invention, and Fig. 2 is the equivalent circuit diagram of single pixel in the viewing area among Fig. 1, and Fig. 3 is the transversary sectional view of the single pixel among Fig. 2.As Fig. 1～shown in Figure 3, display panel 20 comprises a liquid crystal layer 21, a plurality of driving circuit 22, a plurality of pliability circuit diaphragm 23 and at least one printed circuit board (PCB) 24.Liquid crystal layer 21 is arranged between one first substrate 25 and one second substrate 26.First substrate 25 has a viewing area 27 and at least one neighboring area 28, and neighboring area 28 is adjacent to viewing area 27.Second substrate 26 has at least one common electrode 29.These a little driving circuits 22 in series are arranged on the neighboring area 28.These a little pliability circuit diaphragms 23 are electrically connected at this a little driving circuits 22, and between first substrate 25 and printed circuit board (PCB) 24.Printed circuit board (PCB) 24 is electrically connected at this a little pliability circuit diaphragms 23, and by these a little pliability circuit diaphragms 23, to transmit at least two different common voltage V1 and V2 respectively on the common electrode 29 of part, make common electrode 29 27 have different common voltages and distribute in the viewing area.Therefore, can reduce the degree of display panel 20 film flickers, to promote the display quality of display panel 20 widely.
In the present embodiment, as shown in Figure 1, display panel 20 also comprises a plurality of contact mats 31, and these a little contact mats 31 are arranged on the neighboring area 28.Wherein, these a little contact mats 31 of part are adjacent between each two adjacent driving circuit 22, and for example, these a little contact mats 31 of part are between each two adjacent driving circuit 22.In addition, display panel 20 also comprises at least one conduction (transfer) 32, and conduction 32 is arranged on these a little contact mats 31 of part, in order to be electrically connected at common electrode 29.Wherein, conduction 32 can be a conductive material, as polymer spheres or other material or the above-mentioned combination of elargol, surface coated conductive material.Wherein, conductive material comprises gold, silver, copper, iron, tin, lead, molybdenum, neodymium, titanium, tantalum, aluminium, tungsten, hafnium, indium tin oxide, indium-zinc oxide, aluminium zinc oxide, zinc oxide or above-mentioned alloy or other material or above-mentioned combination.In addition, each driving circuit 22 has at least one internal connection line road 33.For example, each driving circuit 22 is passed through in bypass (by pass) mode in internal connection line road 33, but is not limited thereto.In addition, display panel 20 also comprises at least one external connection line road 34, and external connection line road 34 and is electrically connected to internal connection line road 33 and each contact mat 31 between wantonly two driving circuits 22.In addition, display panel 20 also comprises at least one external connection line road 35, external connection line road 35 correspondences are provided with contact mat 31 parts of conduction 32 and are provided with, and are electrically connected at corresponding internal connection line road 33 and one of them of these a little pliability circuit diaphragms 23.
A plurality of driving circuits 22 comprise a plurality of data drive circuit 22a and scan drive circuit 22b.These a little data drive circuit 22a divide into the multi-group data driving circuit, for example are two groups or two groups of above data drive circuits, and embodiments of the invention are example with two groups of data drive circuits, but are not limited thereto.In Fig. 1, the left side 5 data driving circuits 22a is first group of data drive circuit 22a1, and the right 5 data driving circuits 22a is second group of data drive circuit 22a2.Wherein, corresponding to wherein one of this a little pliability circuit diaphragms 23 of each group data drive circuit, can from printed circuit board (PCB) 24 transmit data-signal X and an ancient woman's ornament agate (Gamma) signal Y to each organize data drive circuit.That is,, can transmit a data-signal X and an ancient woman's ornament agate signal Y to the first group data drive circuit 22a1 from printed circuit board (PCB) 24 corresponding to wherein one of these a little pliability circuit diaphragms 23 of first group of data drive circuit 22a1.And,, can transmit a data-signal X and an ancient woman's ornament agate signal Y to the second group data drive circuit 22a2 from printed circuit board (PCB) 24 corresponding to wherein one of these a little pliability circuit diaphragms 23 of second group of data drive circuit 22a2.In Fig. 1, the left side count the 1st pliability circuit diaphragm 23 can be from printed circuit board (PCB) 24 communicated data signal X and an ancient woman's ornament agate signal Y to the first group data drive circuit 22a1 leftmost data drive circuit 22a, leftmost data drive circuit 22a remaining data drive circuit 22a among communicated data signal X and an ancient woman's ornament agate signal Y to the first group data drive circuit 22a1 again among first group of data drive circuit 22a1.And, the left side count the 4th pliability circuit diaphragm 23 can be from printed circuit board (PCB) 24 communicated data signal X and an ancient woman's ornament agate signal Y to the second group data drive circuit 22a2 leftmost data drive circuit 22a, leftmost data drive circuit 22a remaining data drive circuit 22a among communicated data signal X and an ancient woman's ornament agate signal Y to the second group data drive circuit 22a2 again among second group of data drive circuit 22a2.Wherein, these a little pliability circuit diaphragms 23 can be accordingly transmit each data drive circuit 22a power supply signal Z to the first group driving circuit 22a1 and the second group of driving circuit 22a2 from printed circuit board (PCB) 24.Internal connection circuit 33 also can be used as the bypass route (by-pass line) of scan drive circuit 22b, but is not limited thereto.
Above-mentioned different common voltage V1 and V2 are provided by common voltage generator (common-voltagegenerator) 27a, but are not limited thereto, and the number that also can comply with the common voltage that provides different is provided with different common voltage generators.Wherein, common voltage generator 27a can be positioned on the printed circuit board (PCB) 27 or, common voltage generator 27a can be positioned at circuit that the elements combination on first substrate 25 forms or above-mentioned combination.
Can electrically connect or electrical isolation in order to the circuit that transmits different common voltages.For instance, when existing with connection line 34 (2), electrically connect in order to the circuit that transmits common voltage V1 and V2 when external connection line road 34 (1).And when not existing with connection line 34 (2) when external connection line road 34 (1), in order to transmit the line electricity sexual isolation of common voltage V1 and V2.
In addition, printed circuit board (PCB) 24 comprises at least one power circuit 27b, at least one integrated circuit component 27c, at least one connectivity port 27d or other element or above-mentioned combination at least.Power circuit 27b exports the required power supply signal Z of display panel 20 according to this in order to receive an external power source.Integrated circuit component 27c in order to receive external signal and export an ancient woman's ornament agate signal Y according to this and data-signal X wherein at least one, and integrated circuit component 27c comprise clock controller (timing controller), storer (memory) and customized integrated circuit (application specific integrated circuit, ASIC) etc.Connectivity port 27d comprises computing machine, display card and signal processor etc. in order to electrically connect an external system 36.The part signal that it should be noted that above-mentioned pliability circuit diaphragm all is the integrated circuit component 27c that comes from the printed circuit board (PCB) 24 haply, and other signal section comes from by connectivity port 27d and enters display panel 20.Need to prove that above-mentioned common voltage generator 27a also can design together with power circuit 27b.
Viewing area 27 comprises multi-strip scanning line (not shown in Fig. 1) and many data lines (not shown in Fig. 1), and these a little sweep traces are electrically connected at a plurality of scan drive circuit 22b, and these a little data lines are electrically connected at a plurality of data drive circuit 22a.These a little sweep traces and this a little data lines interlock in fact and define a plurality of pixels (not shown in Fig. 1).In the present embodiment, as shown in Figure 2, sweep trace S1 and S2 crisscross data line D1 and D2 in fact, and sweep trace S1 and data line D1 define a pixel P.Pixel P comprises a thin film transistor (TFT) T and a pixel electrode 37, and thin film transistor (TFT) T comprises a grid G, a drain D and one source pole S, and grid G, drain D and source S are electrically connected at sweep trace S1, pixel electrode 37 and data line D1 respectively.Pixel P also comprises a storage capacitors C
StAn and liquid crystal capacitance C
1c, storage capacitors C
StBe electrically connected at a pixel electrode 37 and a pressure-wire, and storage capacitors C
StCross-pressure provided by pixel voltage Vp and a voltage (as: Vdd or other).Above-mentioned pressure-wire can be electrically connected at contact mat 31, and making voltage Vdd is common voltage Vcom, then storage capacitors C
StBe Cs on common.Or above-mentioned pressure-wire can be electrically connected at one scan line S2, and making voltage Vdd is the voltage of sweep trace S2, then storage capacitors C
StBe Cs on gate.Therefore, but the voltage that above-mentioned pressure-wire transmitted is constant or modulation.Liquid crystal capacitance C
1cInsert and put liquid crystal layer 21 up and down by common electrode 29 and pixel electrode 37 and form, and liquid crystal capacitance C
1cCross-pressure provided by pixel voltage Vp and common voltage Vcom.In addition, thin film transistor (TFT) T can be bottom gate type (bottom-gate) (BCE, I-stop, or likes), the thin film transistor (TFT) of top gate type (top-gate) or the transistor of other type, and also comprise a channel layer, it is between grid G, source S and drain D.The material of channel layer can be siliceous amorphous material, siliceous polycrystalline material, siliceous monocrystalline material (single silicon), siliceous crystallite material (micro silicon) and combination thereof.
Please refer to Fig. 4 A, it is the distribution plan of best common electrode of the position of the different common electrodes of experiment gained, and Fig. 4 B is in order to the position of 1 to the 7 pairing viewing area 27, position that indicates Fig. 4 A.The practice of this experiment is as follows.At first, common voltage is from four edges, 38 (1)～38 (4) inputs of common electrode 29.The process of experiment comprises the size of the best common voltage value Vcom ' that change is imported, and record makes the difference dVcom of best common voltage value Vcom ' and common voltage original start value Vcom0 of phenomenon of picture flicker minimum of the position 1 to 7 of viewing area 27 respectively then.Original common voltage value when common voltage original start value Vcom0 is symmetrical in common voltage for the pixel voltage that makes positive-negative polarity as far as possible is so that the phenomenon of picture flicker of position 1 is minimum.
The curve 404 of Fig. 4 A is during for the middle section that the compensates common electrode phenomenon (be also referred to as common electrode delay phenomenon) also littler than the voltage of fringe region, the distribution curve of resulting best common voltage value.Because when common electrode during from its edge reception common voltage, based on the electricresistance effect of common electrode itself, the voltage of the middle section of common electrode can be also littler than the voltage of fringe region.Therefore,, then must increase the size of common voltage value, could reduce the phenomenon of picture flicker of the middle section of common electrode for the also little phenomenon of voltage of the voltage ratio fringe region of the middle section that will compensate common electrode.Therefore, the compensation rate of the pairing common voltage value of the middle section of viewing area 27 (for example the position 4) is with in fact greater than the pairing compensation rate of fringe region (for example position 1 or 7) of viewing area 27.Therefore, when the size that changes the best common voltage value Vcom ' imported to experimentize, the size of the best common voltage value Vcom ' of the phenomenon of picture flicker minimum of the resulting position 4 that makes viewing area 27, will be in fact greater than the size of the best common voltage value Vcom ' of the phenomenon of picture flicker minimum of the position 1 that makes viewing area 27 or 7.By curve 404 as can be known, the best common voltage value of the middle section (for example the position 4) of close viewing area is bigger than the best common voltage value of the zone that keeps to the side (for example position 1 and 7) really.
And, promptly get curve 406 with after curve 402 and 404 totallings.By curve 406 as can be known, the best common voltage value Vcom ' maximum of position 4, and the average best common voltage value Vcom ' of position 1 to 3 is less than the average best common voltage value Vcom ' of position 5 to 7.
How to select two groups or more common voltage as for present embodiment, will be with the detailed practice that offers common electrode 29 in hereinafter explanation.In principle, these a little common voltages that received near a first of the common electrode 29 of these a little driving circuits 22 more wherein in fact less than other one of these a little common voltages that received away from a second portion of the common electrode 29 of these a little driving circuits 22 more.For example, the common voltage V1 that is received near a first of the common electrode 29 of this a little scan drive circuit 22a more is in fact less than the common voltage V2 that is received away from a second portion of the common electrode 29 of these a little scan drive circuits more.
Please refer to Fig. 6, the view when it has two common voltage districts for common electrode.Common electrode 29 has a high common voltage district 29a and a low common voltage district 29b, and the low common voltage district 29b of high common voltage district 29a is away from gate drivers 22b.Low common voltage district 29b and high common voltage district 29a receive two different common voltages respectively, and these two different common voltages for example are common voltage V1 and V2 shown in Figure 1.By Fig. 4 A as can be known, V2 is in fact greater than V1, and preferably V2 than the big in fact 100mV of V1.
Please refer to Fig. 7, the view when it has three common voltage districts for common electrode.Common electrode 29 is divided into a high common voltage district 29c, once high common voltage district 29d and hangs down common voltage district 29e, and low common voltage district 29e, high common voltage district 29c and time high common voltage district 29d are in regular turn away from gate drivers 22b.Low common voltage district 29e, high common voltage district 29c and time high common voltage district 29d receive three different common voltage V1 ', V2 ' and V3 ' respectively.By Fig. 4 A as can be known, V2 ' is in fact greater than V3 ', and V3 ' is in fact greater than V1 '.
Please refer to Fig. 8, the view when it has four common voltage districts for common electrode.Common electrode 29 is divided into a high common voltage district 29f, once high common voltage district 29g, once a low common voltage district 29h and a low common voltage district 29i, and low common voltage district 29i, high common voltage district 29f, inferior high common voltage district 29g and time low common voltage district 29h are in regular turn away from gate drivers 22b.Low common voltage district 29i, high common voltage district 29f, inferior high common voltage district 29g and time low common voltage district 29h receive four different common voltage V1 respectively ", V2 ", V3 " and V4 ".By Fig. 4 A as can be known, V2 " in fact greater than V3 ", V3 " in fact greater than V4 ", and V4 " in fact greater than V1 ".
Among above-mentioned Fig. 6 to Fig. 8, be to show gate drivers 22b in a simplified manner.The mode of the electric connection of each gate drivers 22b reality electrically connects with internal connection line road 33 and external connection line road 34 still as shown in fig. 3 each other.
Need to prove, the above-mentioned data drive circuit 22a that mentions can be a tandem data drive circuit (cascade source driver, CSD), it is with glutinous brilliant (the chip on glass of glass, COG) signal of type data driving chip (source driver chip) transmission, with (the wires onarray of conducting wire on the substrate, WOA) design is connected mutually and is electrically connected, or data drive circuit 22a and then makes viewing area 27 needed elements to form together, or alternate manner, or above-mentioned combination, and then transmission display panel 20 shows required signal, for example power supply signal, an ancient woman's ornament agate signal, clock (clock) signal and control (control) signal etc.Compare with the data drive circuit of traditional display panel, the design of the tandem data drive circuit of present embodiment, can reduce the size and the number of plies of printed circuit board (PCB), and shorten the size and the usage quantity of pliability circuit diaphragm, and reduce many production costs.
In the design of scan drive circuit 22b, except utilizing glutinous brilliant (the chip on glass of glass, COG) outside technology directly is arranged at scanning drive chip on the neighboring area 28, pliability circuit diaphragm (the Tape Carrier Package that also individual packages can be had scanning drive chip, TCP), (Tape Automated Bonding TAB) electrically connects with sweep trace or scan drive circuit 22b and then makes viewing area 27 needed elements to form or alternate manner or above-mentioned combination with the automatic juncture of coil type.At this moment, if when scanning drive chip is packaged in pliability circuit diaphragm, present embodiment need be connected to original printed circuit board (PCB) or need another printed circuit board (PCB) to be electrically connected at the pliability circuit diaphragm that above-mentioned individual packages has scanning drive chip, and can electrically connect with above-mentioned printed circuit board (PCB) 24 with the printed circuit board (PCB) that scan drive circuit electrically connects, to receive the needed signal of scan drive circuit.
In addition, as shown in Figure 9, can be combined into an electrooptical device 50 with electronic component 40 by the described display panel 20 of the above embodiment of the present invention.Electronic component 40 comprises as control element, executive component, treatment element, input element, memory element, driving element, light-emitting component, protecting component, sensing element, detecting element or other function element or above-mentioned combination.And the type of electrooptical device comprises the panel in portable product (as mobile phone, video camera, camera, notebook, game machine, wrist-watch, music player, electronic mail transceiver, digital photo frame, map navigator or similar products like), video and audio product (as audio-visual projector or similar products like), screen, TV, indoor/outdoor billboard, guiding panel, the projector etc.In addition, display panel 20 comprises display panels, organic electric-excitation luminescent displaying panel, look pixel electrode in its panel and drain electrode at least one the electrical material of contact, as liquid crystal layer, organic luminous layer (as: micromolecule, macromolecule or above-mentioned combination) or above-mentioned combination.In addition, display panel 20, if display panels, can be dissimilar panels, comprise as the penetrating type panel, the semi penetration type panel, the reflection-type panel, double-sided display profile plate, vertical orientation profile plate (VA), horizontal switch type panel (IPS), multi-domain perpendicular alignment-type panel (MVA), twisted nematic panel (TN), super-twist nematic panel (STN), pattern vertical orientation profile plate (PVA), super pattern vertical orientation profile plate (S-PVA), the advanced person is profile plate (ASV) with great visual angle, fringe field switch type panel (FFS), continuous fireworks shape arrange type panel (CPA), rotational symmetry is arranged micella panel (ASM), optical compensation curved arrange type panel (OCB), super horizontal switch type panel (S-IPS), advanced super horizontal switch type panel (AS-IPS), extreme edge electric field switch type panel (UFFS), stabilizing polymer alignment-type panel (PSA), double vision angle profile plate (dual-view), three visual angle profile plates (triple-view), or other type panel, or above-mentioned combination.
The display panel that the above embodiment of the present invention disclosed, it can transmit at least two different common voltages respectively in the design of common electrode, to reduce the degree of display panel film flicker phenomenon, to promote the display quality of display panel widely.Wherein, the film flicker phenomenon is when driving pixel with the type of drive of data voltage reversal of poles, and the middle section that display panel has gate delay and/or a common electrode takes place than the situation of the voltage also little (being also referred to as common electrode postpones) of fringe region.In addition, the design of the tandem data drive circuit of present embodiment can reduce the size and the number of plies of printed circuit board (PCB), and shortens the size and the usage quantity of pliability circuit diaphragm, and reduces many production costs.
In sum, though the present invention discloses as above with a preferred embodiment, so it is not in order to limit the present invention.The persond having ordinary knowledge in the technical field of the present invention, without departing from the spirit and scope of the present invention, when being used for a variety of modifications and variations.Therefore, protection scope of the present invention is as the criterion when looking the claim scope person of defining.
Claims (9)
1. display panel, described display panel comprises:
One liquid crystal layer is arranged between one first substrate and one second substrate, and wherein, described first substrate has a viewing area and at least one neighboring area adjacent to described viewing area, and described second substrate has at least one common electrode;
A plurality of driving circuits in series are arranged on the described neighboring area, and are divided into the plural groups driving circuit;
A plurality of pliability circuit diaphragms, each the pliability circuit diaphragm in described a plurality of pliability circuit diaphragms is electrically connected at every group of described driving circuit respectively; And
At least one printed circuit board (PCB) is electrically connected at described pliability circuit diaphragm, and by described pliability circuit diaphragm, in order to transmit at least two different common voltages respectively on the described common electrode of part;
Also comprise a plurality of contact mats, be arranged on the described neighboring area;
Each described driving circuit has at least one internal connection line road;
Also comprise at least one conduction, be arranged on the described contact mat of part, be electrically connected at described common electrode;
Also comprise at least one external connection line road, correspondence is arranged at arbitrary described contact mat and is provided with the sub-part of described conduction, and is electrically connected at described internal connection line road and described pliability circuit diaphragm one of them.
2. display panel according to claim 1 is characterized in that, the described contact mat of part is between each two adjacent described driving circuit.
3. display panel according to claim 1 is characterized in that, also comprises at least one external connection line road between arbitrary each described driving circuit, and is electrically connected at described internal connection line road and each described contact mat.
4. display panel according to claim 1 is characterized in that, each described driving circuit comprises scan driving circuit, and described internal connection line road can be used as a bypass circuit.
5. display panel according to claim 1 is characterized in that, each described driving circuit comprises data drive circuit.
6. display panel according to claim 1 is characterized in that, described pliability circuit diaphragm transmits a data-signal and an an ancient woman's ornament agate signal.
7. display panel according to claim 1 is characterized in that, described pliability circuit diaphragm transmits a power supply signal.
8. display panel according to claim 1, it is characterized in that, the described common voltage that a first of the described common electrode of approaching more described driving circuit is received wherein one in fact less than other one of the described common voltage that is received away from a second portion of the described common electrode of described driving circuit more.
9. an electrooptical device comprises display panel as claimed in claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101077284A CN100573248C (en) | 2007-04-28 | 2007-04-28 | Display panel and comprise its electrooptical device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101077284A CN100573248C (en) | 2007-04-28 | 2007-04-28 | Display panel and comprise its electrooptical device |
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| Publication Number | Publication Date |
|---|---|
| CN101042483A CN101042483A (en) | 2007-09-26 |
| CN100573248C true CN100573248C (en) | 2009-12-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2007101077284A Active CN100573248C (en) | 2007-04-28 | 2007-04-28 | Display panel and comprise its electrooptical device |
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| US10127892B2 (en) * | 2016-11-11 | 2018-11-13 | A.U. Vista, Inc. | Display device using overlapped data lines near center to dim Mura defect |
| CN107134464A (en) * | 2017-07-03 | 2017-09-05 | 京东方科技集团股份有限公司 | A kind of array base palte, its driving method and display device |
| CN109166505A (en) * | 2018-10-23 | 2019-01-08 | 惠科股份有限公司 | Display panel detection method and device and display device |
| CN114355683A (en) * | 2020-10-12 | 2022-04-15 | 深超光电（深圳）有限公司 | Thin film transistor substrate and liquid crystal display panel |
| CN112650416B (en) * | 2021-01-06 | 2022-09-27 | 深圳市华星光电半导体显示技术有限公司 | Light-operated touch control integrated circuit and display |
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| CN101042483A (en) | 2007-09-26 |
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