CN110070832A - Display panel and its signal reading method, display device - Google Patents

Display panel and its signal reading method, display device Download PDF

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Publication number
CN110070832A
CN110070832A CN201910530072.XA CN201910530072A CN110070832A CN 110070832 A CN110070832 A CN 110070832A CN 201910530072 A CN201910530072 A CN 201910530072A CN 110070832 A CN110070832 A CN 110070832A
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China
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signal
circuit
sense wire
selection
signal input
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CN201910530072.XA
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CN110070832B (en
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殷新社
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BOE Technology Group Co Ltd
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BOE Technology Group Co Ltd
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Priority to CN201910530072.XA priority Critical patent/CN110070832B/en
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Priority to PCT/CN2020/086683 priority patent/WO2020253376A1/en
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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
    • G09G3/3225—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
    • G09G3/3225—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
    • G09G3/3233—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix with pixel circuitry controlling the current through the light-emitting element

Abstract

A kind of display panel and its signal reading method, display device.The display panel includes: that adjacent the first pixel unit group and the second pixel unit group, the first N select a selection circuit, the 2nd N to select a selection circuit, the first sense wire group and the second sense wire group.Pixel unit group includes N number of successively adjacent pixel circuit, and sense wire group includes N successively adjacent sense wire, and the sensing signal output end of N number of pixel circuit is electrically connected with N sense wire respectively；It includes control terminal, signal output end and N number of signal input part that N, which selects a selection circuit, and control terminal is for receiving selection signal sequentially to select one of N number of signal input part to connect with signal output end；N number of signal input part is electrically connected with N sense wire respectively；The sum for the section senses line being arranged between the first sense wire connecting with the first signal input part finally selected and the second sense wire connecting with the second signal input terminal selected at first is more than or equal to 1.

Description

Display panel and its signal reading method, display device
Technical field
Embodiment of the disclosure is related to a kind of display panel and its signal reading method, display device.
Background technique
Organic Light Emitting Diode (Organic Light Emitting Diode, OLED) display panel is due to visual angle It is wide, contrast is high, fast response time and electric compared to the higher light emission luminance of inorganic light emitting displays part, lower driving Pressure etc. advantages and gradually get more and more people's extensive concerning.Due to These characteristics, Organic Light Emitting Diode (OLED) display panel can To be suitable for the devices having a display function such as mobile phone, display, laptop, digital camera, instrument and meter.
Summary of the invention
At least one embodiment of the disclosure provides a kind of display panel comprising: the first pixel unit group, the second picture Plain unit group, the first N select a selection circuit, the 2nd N to select a selection circuit, the first sense wire group and the second sense wire group.It is described First pixel unit group and the second pixel unit group are disposed adjacent；The first pixel unit group includes N number of successively adjacent The first pixel circuit, the first sense wire group includes successively adjacent the first sense wire of N item, the N number of first pixel electricity The sensing signal output end on road is electrically connected with first sense wire of N item respectively；The second pixel unit group include it is N number of successively The second adjacent pixel circuit, the second sense wire group include successively adjacent the second sense wire of N item, N number of second picture The sensing signal output end of plain circuit is electrically connected with second sense wire of N item respectively；First N selects the selection circuit to include First control terminal, the first signal output end and N number of first signal input part, first control terminal for receive selection signal with One of described N number of first signal input part is sequentially selected to connect with first signal output end；2nd N selects a selection electric Road includes the second control terminal, second signal output end and N number of second signal input terminal, and second control terminal is described for receiving Selection signal is sequentially to select one of described N number of second signal input terminal to connect with the second signal output end；Described N number of One signal input part is electrically connected with first sense wire of N item respectively, N number of second signal input terminal respectively with the N item The electrical connection of second sense wire；And the first sense wire being connect with the first signal input part finally selected and at first Described in part first sense wire being arranged between second sense wire of the second signal input terminal connection selected and part It is the integer more than or equal to 2 that the sum of second sense wire, which is more than or equal to 1, N,.
At least one embodiment of the disclosure additionally provides a kind of display device comprising disclosure any embodiment provides Display panel.
At least one embodiment of the disclosure additionally provides a kind of display panel provided for disclosure any embodiment Signal reading method comprising: select a selection circuit sequentially to select N number of first signal input part by the first N One of connect with first signal output end；A selection circuit is selected sequentially to select N number of second signal by the 2nd N One of input terminal is connect with the second signal output end.
Detailed description of the invention
In order to illustrate more clearly of the technical solution of the embodiment of the present disclosure, the attached drawing to embodiment is simply situated between below It continues, it should be apparent that, the accompanying drawings in the following description merely relates to some embodiments of the present disclosure, rather than the limitation to the disclosure.
Figure 1A is a kind of schematic diagram of pixel circuit；
Figure 1B is the schematic diagram of another pixel circuit；
Fig. 1 C is the schematic diagram of another pixel circuit；
Fig. 1 D is a kind of sensing voltage time history plot；
Fig. 2A is a kind of schematic diagram of display panel；
Fig. 2 B is the curve that the voltage of the source electrode of the driving transistor of display panel shown in Fig. 2A changes over time；
Fig. 3 A is the schematic diagram for the display panel that at least one embodiment of the disclosure provides；
Fig. 3 B is that one of the first pixel circuit and the second pixel circuit that at least one embodiment of the disclosure provides shows Example；
Fig. 3 C is the schematic diagram that the first N that at least one embodiment of the disclosure provides selects a selection circuit；
Fig. 3 D is the schematic diagram that the 2nd N that at least one embodiment of the disclosure provides selects a selection circuit；
Fig. 4 A is an exemplary schematic diagram of display panel shown in Fig. 3 A；
Fig. 4 B shows the schematic diagram that the first N shown in Fig. 4 A selects a selection circuit；
Fig. 4 C shows the schematic diagram that the 2nd N shown in Fig. 4 B selects a selection circuit；
The first N of another kind that at least one embodiment that Fig. 4 D shows the disclosure provides selects the signal of a selection circuit Figure；
Fig. 5 is the schematic flow of the signal reading method for the display panel that at least one embodiment of the disclosure provides Figure；
Fig. 6 is the exemplary block diagram for the display panel that at least one embodiment of the disclosure provides；And
Fig. 7 is the schematic diagram of display panel shown in fig. 6,
Specific embodiment
To keep the purposes, technical schemes and advantages of the embodiment of the present disclosure clearer, below in conjunction with the embodiment of the present disclosure Attached drawing, the technical solution of the embodiment of the present disclosure is clearly and completely described.Obviously, described embodiment is this public affairs The a part of the embodiment opened, instead of all the embodiments.Based on described embodiment of the disclosure, ordinary skill Personnel's every other embodiment obtained under the premise of being not necessarily to creative work, belongs to the range of disclosure protection.
Unless otherwise defined, the technical term or scientific term used herein should be in disclosure fields and has The ordinary meaning that the personage of general technical ability is understood." first ", " second " used in the disclosure and similar word are not It indicates any sequence, quantity or importance, and is used only to distinguish different component parts.Equally, " comprising " or " packet Containing " etc. similar word mean to occur the element or object before the word cover appear in the word presented hereinafter element or Object and its equivalent, and it is not excluded for other elements or object.The similar word such as " connection " or " connected " is not limited to Physics or mechanical connection, but may include electrical connection, it is either direct or indirect."upper", "lower", "left", "right" etc. is only used for indicating relative positional relationship, and after the absolute position for being described object changes, then the relative position is closed System may also correspondingly change.
Pixel circuit in Organic Light Emitting Diode (OLED) display panel generally uses matrix driving mode.According to each Whether switching component is introduced in pixel unit, and OLED display panel can be divided into active matrix (Active Matrix) driving Formula and passive matrix (Passive Matrix) drive-type.AMOLED (that is, active matrix drive type OLED) display panel The pixel circuit of each pixel unit includes thin film transistor (TFT) and storage capacitance, passes through control thin film transistor (TFT) and storage electricity Hold, can control the intensity of the electric current for driving OLED luminous, so that OLED be made to shine as needed.
Basic pixel circuit used in AMOLED display panel is usually 2T1C pixel circuit, that is, utilizes two film crystalline substances Body pipe (Thin-film transistor, TFT) and a storage capacitance Cst are come the pixel circuit that drives OLED luminous.Figure 1A The schematic diagram of two kinds of 2T1C pixel circuits is shown with Figure 1B.
As shown in Figure 1A, a kind of 2T1C pixel circuit includes switching transistor T0, driving transistor N0 and storage capacitance Cst.For example, the grid connection scan line (not shown) of switching transistor T0 is to receive scanning signal Scan1；For example, The source electrode of switching transistor T0 is connected to data line (not shown) to receive data-signal Vdata；The switching transistor The drain electrode of T0 is connected to the grid of driving transistor N0；The source electrode of driving transistor N0 is connected to first voltage end to receive first The drain electrode of voltage Vdd, driving transistor N0 are connected to the positive terminal of OLED；One end of storage capacitance Cst is connected to switch crystal The drain electrode of pipe T0 and the grid for driving transistor N0, the other end are connected to the source electrode and first voltage of driving transistor N0 End；The negative pole end of OLED is connected to second voltage end to receive second voltage Vss.For example, the voltage value of first voltage Vdd is greater than The voltage value of second voltage Vss.The 2T1C pixel circuit is controlled using two TFT and storage capacitance Cst including pixel electricity The grayscale of the pixel unit on road.When scanning signal Scan1 (applying via scan line) opens switching transistor T0, via data The data-signal Vdata (data drive circuit offer) that line is sent into will charge to storage capacitance Cst via switching transistor T0, by This data-signal Vdata is storable in storage capacitance Cst, and this be stored in the data-signal Vdata in storage capacitance Cst can To control the conducting degree of driving transistor N0, it is possible thereby to control the driving current of driving transistor N0 generation (for driving OLED shines) intensity, the intensity of this electric current determine include the pixel unit of the pixel circuit grayscale.Shown in figure 1A In 2T1C pixel circuit, switching transistor T0 is N-type transistor and drives transistor N0 to be P-type transistor.
As shown in Figure 1B, another 2T1C pixel circuit also includes switching transistor T0, driving transistor N0 and storage Capacitor Cst, but compared to pixel circuit shown in figure 1A, the connection type of pixel circuit shown in Figure 1B is slightly changed, and Driving transistor N0 is N-type transistor.The pixel circuit of Figure 1B relative to pixel circuit shown in figure 1A variation in place of include: The positive terminal of OLED is connected to first voltage end to receive first voltage Vdd (high voltage), and negative pole end is connected to driving crystal The drain electrode of pipe N0, the source electrode of driving transistor N0 are connected to second voltage end to receive second voltage Vss (low-voltage, such as connect Ground voltage).One end of storage capacitance Cst is connected to the drain electrode of switching transistor T0 and drives the grid of transistor N0, another End is connected to source electrode and the second voltage end of driving transistor N0.The working method of 2T1C pixel circuit shown in Figure 1B is basic Upper essentially identical with pixel circuit shown in figure 1A, which is not described herein again.
It, can also be in addition, switching transistor T0 is not limited to N-type transistor for pixel circuit shown in Figure 1A and Figure 1B For P-type transistor, details are not described herein.
OLED display panel generally includes multiple pixel units by array arrangement, and each pixel unit for example may include Above-mentioned pixel circuit.The inventor of the disclosure notices in OLED display panel under study for action, the drive in each pixel circuit The threshold voltage of dynamic transistor is since there may be differences by preparation process；Also, due to the influence of such as temperature change, driving is brilliant The threshold voltage of body pipe may generate drift, so that multiple pixel circuits in OLED display panel receive identical number It is believed that number in the case where, the driving current intensity that the driving transistor of multiple pixel circuits generates may be different from each other, and therefore So that the intensity of light and the grayscale of multiple pixel units of the transmitting of the light-emitting component of multiple pixel circuit drivings may that This is different, thus reduces the brightness uniformity and/or display quality of OLED display panel.To sum up, need to threshold voltage into Row compensation (for example, real-time compensation), to guarantee the display effect of OLED display panel.
It can be using internal compensation technology to OLED display panel although the inventor of the disclosure notices under study for action Each pixel circuit carries out threshold compensation, but structure is complicated (has for the pixel circuit due to using internal compensation technology More transistors and control line), size it is larger, therefore, be not suitable for having using the pixel circuit of internal compensation technology Compared with the display panel of small pixel cell size, thus it is unfavorable for the promotion of the resolution ratio of display panel.
The inventor of the disclosure is also noted that under study for action can also be using external compensation technology to OLED display panel Each pixel circuit carries out threshold compensation, illustrates below with reference to Fig. 1 C.
For example, Fig. 1 C shows a kind of pixel circuit of threshold voltage that can detecte driving transistor (that is, 3T1C is electric Road), driving transistor N0 is N-type transistor.For example, as shown in Figure 1 C, it, can be in 2T1C circuit in order to realize compensation function On the basis of introduce sensing transistor S0, that is, the first end of sensing transistor S0 can be connected to driving transistor N0 source The second end of pole, sensing transistor S0 is connect via sense wire SENL with detection circuit (being not shown in Fig. 1 C).
For example, setting voltage (that is, reset signal) can be applied to the source electrode of driving transistor N0 in reseting stage Vref, and data can be applied to the grid of driving transistor N0 via switching transistor T0 in threshold value establishment stage start time Signal (for example, data voltage) Vdata, herein, Vdata > Vref+Vth, Vth indicate the threshold voltage of driving transistor, by This data-signal Vdata can to drive transistor N0 conducting.After driving transistor N0 conducting, via sensing transistor S0 discharges for detection circuit or fills to via sensing transistor S0 to the capacitor or parasitic capacitance Csc that are arranged on sense wire Electricity, so that the source voltage Vs of driving transistor N0 changes.When the source voltage Vs of driving transistor N0 is equal to driving transistor When the difference of the threshold voltage vt h of the grid voltage Vg and driving transistor of N0, driving transistor N0 will end, and drive crystal The source voltage Vs of pipe N0 no longer changes.For example, can be after driving transistor N0 cut-off, via the sensing transistor S0 of conducting The source voltage after cut-off (namely source voltage Vb after driving transistor N0 cut-off) is obtained from the source electrode of driving transistor N0. After obtaining cut-off source voltage Vb, the threshold voltage (that is, Vth=Vdata-Vb) of available driving transistor.By This, can based on driven in each pixel circuit the threshold voltage of transistor to the data-signal to be shown (number of pixel circuit According to voltage) it compensates, and pixel circuit is driven using compensated data-signal, it is possible thereby to realize for display panel The compensation function of the threshold voltage of each sub-pixel.For example, expression formula below, which can be used, in compensated Vdata_C indicates: Vdata_C=Vdata+Vth.
The inventor of the disclosure is also noted that obtain the essence of each pixel circuit of OLED display panel under study for action True threshold value, time needed for threshold test are longer.The threshold test time is illustrated to pixel electricity below with reference to Fig. 1 D The influence of the precision of the threshold test on road.
Fig. 1 D shows a kind of source electrode electricity that the sensing transistor S0 via conducting is obtained from the source electrode of driving transistor N0 Press time history plot.During detection, switching transistor T0 is held on, therefore, driving transistor N0's Grid voltage Vg remains data-signal (data voltage) Vdata.The disclosure inventors noted that apply data-signal After Vdata, through sense wire to detection circuit electric discharge or to the process for capacitor or the parasitic capacitance charging being arranged on sense wire In, with the increase in the charging time to storage capacitance Cst etc., charging rate will be reduced accordingly (that is, sensing voltage increases Speed reduce) (referring to Fig. 1 D), this is because charging current will with source voltage (that is, driving transistor N0 source electrode Voltage Vs) increase and reduce.Specifically, drive the electric current Ids of transistor N0 lower output in a saturated state that can calculate as follows Formula obtains:
Ids=K (Vg-Vs-Vth)2
=K (Vdata-Vs-Vth)2
=K ((Vdata-Vth)-Vs)2。
Here, K=1/2 × W/L × C × μ, W are the width for driving the channel of transistor N0, and L is driving transistor N0 The length of channel, W/L are the breadth length ratio (that is, ratio of width and length) for driving the channel of transistor N0, and μ is electron transfer Rate, C are the capacitor of unit area.
During driving the voltage Vs of source electrode of transistor N0 to increase to Vdata-Vth, with the increase of Vs, The value of [(Vdata-Vth)-Vs] will be reduced constantly；Accordingly, the electric current Ids and charging rate of driving transistor N0 output It will constantly reduce therewith, therefore, time Ts longer needed for from charging starting to driving transistor N0 cut-off.
The inventor of the disclosure again it is noted that within a period of time before driving transistor N0 cut-off, drives under study for action The variable quantity of the voltage Vs of the source electrode of transistor N0 is smaller, accordingly it is also possible to be based on before driving transistor N0 cut-off from drive The threshold voltage of the available driving transistor N0 of the voltage Vbp that the source electrode of dynamic transistor N0 obtains is (that is, Vth=Vdata- Vbp), the threshold voltage of the driving transistor N0 obtained at this time is more accurate；It is possible thereby to shorten the time of threshold test, one In a little examples, driving transistor N0 can also be realized during booting (for example, between the display cycle adjacent during display) Threshold voltage detection.
Fig. 2A is a kind of schematic diagram of display panel 500, and Fig. 2 B is the driving transistor of display panel 500 shown in Fig. 2A Source electrode the curve that changes over time of voltage.The inventor of the disclosure is under study for action again it is noted that can be using shown in Fig. 2A Display panel 500 promoted by sensing obtain driving transistor N0 threshold voltage precision.Below with reference to Fig. 2A and figure 2B is illustrated.
As shown in Figure 2 A, which includes multiple pixel unit groups 510 being set side by side, multiple to be set side by side N select a selection circuit 530, multiple sense wire groups 520 being set side by side and multiple signal conversion circuits being set side by side 550.For example, multiple pixel unit groups 510, multiple N select a selection circuit 530, multiple sense wire groups 520 and multiple signals to turn Circuit 550 is changed to be set side by side in the first direction dl respectively.For example, multiple pixel unit groups 510, multiple N select a selection circuit 530, multiple sense wire groups 520 and the number of multiple signal conversion circuits 550 are equal to each other (for example, being equal to M).
For example, multiple pixel unit groups 510 are located at the display area 501 of display panel 500, multiple N select a selection circuit 530 and multiple signal conversion circuits 550 be located at the neighboring area of display panel 500, multiple sense wire groups 520 are respectively from display The display area 501 of panel 500 extends to the neighboring area of display panel 500；The neighboring area of display panel 500 is around display The display area 501 of panel 500 is arranged, multiple N select a selection circuit 530 and multiple signal conversion circuits 550 for example positioned at The side (for example, downside) of the display area 501 of display panel 500.
For example, as shown in Figure 2 A, each pixel unit group 510 includes the pixel circuit 511 of multiple array arrangements.For example, Each pixel unit group 510 includes adjacent (the successively adjacent in the first direction dl) pixel circuit 511 of N Leie time.For example, every A sense wire group 520 includes N item successively adjacent sense wire 521, the sensing signal output end of N column pixel circuit 511 respectively with N Sense wire 521 is connected.
For example, as shown in Figure 2 A, each N select a selection circuit 530 include N number of successively adjacent selection transistor (T_1, T_2 ... T_N-1 and T_N), N number of selection transistor is sequentially arranged in the first direction dl；N number of selection transistor is also with It is sequentially arranged on the second direction D2 that one direction D1 intersects, first direction D1 is for example vertical with second direction D2.
For example, as shown in Figure 2 A, the input terminal of N number of selection transistor is configured the N that respectively N selects a selection circuit 530 A signal input part, and be connected respectively with corresponding N sense wire 521；The output end of N number of selection transistor is selected with N The signal output end for selecting circuit 530 is connected, and N selects the signal output end of a selection circuit 530 to convert electricity with a corresponding signal Road 550 is connected；The control terminal of N number of selection transistor is configured as receiving N number of selection subsignal, brilliant with the N number of selection of turn in order Body pipe and the signal for sequentially selecting N that one of N number of signal input part of a selection circuit 530 is selected to select a selection circuit 530 with a N Output end connection.
It is controlled for example, multiple N are selected in a selection circuit 530 positioned at the control terminal of the transistor of same position and same selection Line 151 is connected, it is possible thereby to simplify the wiring of display panel 500.It should be noted that multiple N select position in a selection circuit 530 Refer to that multiple N select (sequence in the first direction dl) phase each other that sorts in a selection circuit 530 in the transistor of same position Same transistor, without requiring these transistors to select the position of a selection circuit 530 exactly the same relative to the N where it；Example Such as, it is the identical transistor in position that multiple N, which select the transistor that X is ordered as in a selection circuit 530, and herein, X is more than or equal to 1 Less than or equal to the integer between N.
For example, each signal conversion circuit 550 is configured as received analog signal being converted to digital signal；Example Such as, each signal conversion circuit 550 can be implemented as analog to digital conversion circuit.
For example, when every row pixel circuit 511 in display area 501 is scanned, each N selects a selection circuit 530 can be with Positive direction (for example, direction in Fig. 2A from left to right) along first direction D1 makes each N select the N number of of a selection circuit 530 Selection transistor sequentially turns on, so that a corresponding signal conversion circuit 550 can sequentially receive D1 in a first direction On the successively sensing signal output end output of adjacent N number of pixel circuit 511 N number of sensing signal, and will above-mentioned N number of sensing letter Number for obtaining in the threshold voltage of N number of pixel circuit 511.
As shown in Figure 2 A, in the first direction dl, each N selects the choosing that X is in the conductive state in a selection circuit 530 It selects transistor and adjacent N selects transistor between the selection transistor that X is in the conductive state in a selection circuit 530 Number is equal to N-1, that is, the sense wire 521 that X is selected in each sense wire group 520 and adjacent sense wire group 520 The number for the sense wire 521 between sense wire 521 that middle X is selected is equal to N-1, X in each pixel unit group 510 It is a that sensing letter is exported by selection by X in the pixel circuit 511 of selection output sensing signal and adjacent pixel unit group 510 Number pixel circuit 511 between pixel circuit 511 number be equal to N-1.
For example, by making N root sense wire 521 be connected with the same signal conversion circuit 550, each signal conversion circuit 550 can be used for the sensing letter of the sensing signal output end output of successively adjacent pixel circuit 511 N number of in display area 501 Number be converted to digital signal；In such cases, it is possible to reduce the number of signal conversion circuit 550, it is possible thereby to reduce display surface The cost of plate, particularly with using, detection accuracy is higher, for the display panel of the higher signal conversion circuit of price.
For example, the threshold voltage of N number of pixel circuit 511 is mutually the same in each pixel unit group 510, N number of pixel electricity In the case that the received data voltage in road 511 is mutually the same and the received setting voltage of N number of pixel circuit 511 is mutually the same, N The change curve for the sensing signal that a pixel circuit 511 exports is (for example, being curve shown in Fig. 2 B) all the same；Such as Fig. 2 B institute Show, the change curve of sensing signal includes reseting stage REST, threshold value establishment stage TH_B (that is, sensing signal constantly increases Stage) and threshold value read stage TH_R, threshold value reads stage TH_R and is temporally located at Vth establishment stage (sensing signal obtains To enough growths) after, before the driving transistor cutoff of pixel circuit 511, in such cases, pixel circuit 511 is to capacitor (for example, capacitor on sense wire) charging is more abundant, and the value of sensing signal is close to but not equal to driving transistor cutoff The value of sensing signal under state.
For example, selecting a selection circuit 530 along the positive direction of first direction D1 (for example, in Fig. 2A from left to right in each N Direction) make each N that N number of selection transistor of a selection circuit 530 be selected to sequentially turn in the case where, a corresponding signal turn Changing the sensing voltage that successively received N number of pixel circuit 511 exports of circuit 550 is first in each pixel unit group 510 The sensing signal S_1 that a pixel circuit 511 exports, second pixel circuit 511 exports in each pixel unit group 510 Sensing signal S_2 ... ..., the sensing signal S_N-1 that the N-1 pixel circuit 511 exports in each pixel unit group 510 And the sensing signal S_N (B referring to fig. 2) that n-th pixel circuit 511 exports in each pixel unit group 510, thus make In the sensing signal that obtains of signal conversion circuit 550, first pixel circuit 511 in each pixel unit group 510 Difference between the systematic error of the sensing signal of the systematic error and n-th pixel circuit 511 of sensing signal is maximum, therefore, The systematic error of the sensing signal of n-th pixel circuit 511 and adjacent pixel unit group 510 in each pixel unit group 510 In first pixel circuit 511 sensing signal systematic error difference it is maximum, and so that in compensated stage, for phase Adjacent pixel circuit 511 is (for example, n-th pixel circuit 511 in each pixel unit group 510 in adjacent pixel unit group 510 And with first pixel circuit 511 in adjacent pixel unit group 510) compensated threshold voltage systematic error between Difference is larger.For example, in the case where the grayscale of each image sub-pixels of image to be shown is mutually the same, adjacent pixel Brightness (for example, intensity of the transmitting light) difference for the light-emitting component that adjacent pixel circuit 511 drives in unit group 510 compared with Greatly, so that user may observe above-mentioned luminance difference.
At least one embodiment of the disclosure provides a kind of display panel and its signal reading method, display device, should Display panel includes: that the first pixel unit group, the second pixel unit group, the first N select a selection circuit, the 2nd N to select a selection electric Road, the first sense wire group and the second sense wire group.First pixel unit group and the second pixel unit group are disposed adjacent；First pixel Unit group includes N number of successively adjacent the first pixel circuit, and the first sense wire group includes successively adjacent the first sense wire of N item, N The sensing signal output end of a first pixel circuit is electrically connected with the first sense wire of N item respectively；Second pixel unit group includes N number of Successively the second adjacent pixel circuit, the second sense wire group include successively adjacent the second sense wire of N item, N number of second pixel electricity The sensing signal output end on road is electrically connected with the second sense wire of N item respectively；First N select a selection circuit include the first control terminal, First signal output end and N number of first signal input part, the first control terminal is for receiving selection signal sequentially to select N number of first One of signal input part is connect with the first signal output end；2nd N selects a selection circuit defeated including the second control terminal, second signal Outlet and N number of second signal input terminal, the second control terminal is for receiving selection signal sequentially to select N number of second signal input terminal One of connect with second signal output end；N number of first signal input part is electrically connected with the first sense wire of N item respectively, N number of second letter Number input terminal is electrically connected with the second sense wire of N item respectively；In the first sense being connect with the first signal input part finally selected The first sense wire of part being arranged between survey line and the second sense wire being connect with the second signal input terminal selected at first Being more than or equal to 1, N with the sum of the second sense wire of part is the integer more than or equal to 2.
In some instances, the first sense wire being connect with the first signal input part finally selected and at first The first sense wire of part and part second being arranged between second sense wire of the second signal input terminal connection selected sense The sum of line is less than or equal to N-1.
For example, display panel and its signal reading method and display device that at least one embodiment of the disclosure provides The maximum value of the difference of the systematic error of the brightness of the light-emitting component of adjacent pixel circuit driving can be reduced.
Fig. 3 A is the schematic diagram for the display panel that at least one embodiment of the disclosure provides.As shown in Figure 3A, the display Panel includes: that the first pixel unit group 111, the second pixel unit group 112, the first N select a selection circuit 130, the 2nd N to select Select circuit 140, the first sense wire group 121 and the second sense wire group 122.As shown in Figure 3A, according to practical application request, display surface Plate can also include the first signal conversion circuit 152 and second signal conversion circuit 153；Herein, N is the integer more than or equal to 2.
For example, as shown in Figure 3A, display panel includes display area 101 and around the display area of display panel 101 Neighboring area is set, and the first pixel unit group 111 and the second pixel unit group 112 are located at display area 101；First N is selected Select circuit 130, the 2nd N selects a selection circuit 140, the first signal conversion circuit 152 and second signal conversion circuit 153 are located at week Border region；First sense wire group 121 and the second sense wire group 122 extend to display panel from the display area of display panel respectively Neighboring area.For example, the first N selects a selection circuit 130, the 2nd N to select a selection circuit 140, the first signal conversion circuit 152 The side (for example, downside) of display area can be located at second signal conversion circuit 153.It should be noted that display panel It can also be not provided with the first signal conversion circuit 152 and the first signal conversion circuit 152, in such cases, outside display panel The first signal conversion circuit 152 and second signal conversion circuit 153 selection circuit can be selected with the first N respectively by bonding 130 and the 2nd N select a selection circuit 140 be electrically connected (for example, being directly connected to).
For example, as shown in Figure 3A, the first pixel unit group 111 and the second pixel unit group 112 are (for example, positioned at Fig. 3 A's The the first pixel unit group 111 and the second pixel unit group 112 of the leftmost side) it is disposed adjacent.It should be noted that the first pixel list Tuple 111 and the second pixel unit group 112 be disposed adjacent refer to the first pixel unit group 111 and the second pixel unit it is not set its His pixel unit group or pixel unit (effective pixel unit group or effective pixel unit), the disclosure it is other " adjacent to set Set " also there is similar meaning, it repeats no more.For example, as shown in Figure 3A, the first N selects a selection circuit 130 and the 2nd N to select one Selection circuit 140 is disposed adjacent；First sense wire group 121 and the second sense wire group 122 are disposed adjacent；First signal conversion circuit 152 and second signal conversion circuit 153 be disposed adjacent.
For example, the first pixel unit group 111, the first N select a selection circuit 130 and the first signal conversion circuit 152 with It is sequentially arranged on the second direction D2 that first direction D1 intersects, the second pixel unit group 112, the 2nd N select 140 and of a selection circuit Second signal conversion circuit 153 is sequentially arranged in a second direction d 2.For example, first direction D1 can be the row side of display panel It can be the column direction or display panel of display panel to the extending direction second direction D2 of the grid line of perhaps display panel The extending direction of data line.For example, first direction D1 is perpendicular to second direction D1.
For example, as shown in Figure 3A, display panel may include multiple first pixel unit groups 111 and multiple second pixel lists Tuple 112, and multiple first pixel unit groups 111 and multiple second pixel unit groups 112 can in the first direction dl ( That is, multiple first pixel unit groups 111 and multiple second pixel unit groups 112 are arranged in juxtaposition direction) on be arranged alternately.It is corresponding Ground, display panel may include that multiple first N select a selection circuit 130, multiple 2nd N to select a selection circuit 140, multiple first Sense wire group 121, multiple second sense wire groups 122, multiple first signal conversion circuits 152 and multiple second signals conversion electricity Road 153；Multiple first N select a selection circuit 130 and multiple 2nd N to select a selection circuit 140 that can hand in the first direction dl For arrangement；Multiple first sense wire groups 121 and multiple second sense wire groups 122 can be arranged alternately in the first direction dl；It is more A first signal conversion circuit 152 and multiple second signal conversion circuits 153 can be arranged alternately in the first direction dl.
For example, as shown in Figure 3A, the number of multiple first pixel unit groups 111, multiple first N select a selection circuit 130 Number, the number of multiple first sense wire groups 121 and the number of multiple first signal conversion circuits 152 be equal to each other (example Such as, M are equal to, M is the integer more than or equal to 2)；The number of multiple second pixel unit groups 112, multiple 2nd N are selected Select the number of circuit 140, the number of multiple second sense wire groups 122 and multiple second signal conversion circuits 153 number that This equal (for example, being equal to M).
For clarity, below in display panel shown in Fig. 3 A be located at the leftmost side the first pixel unit group 111, Second pixel unit group 112, the first N select a selection circuit 130, the 2nd N select a selection circuit 140, the first sense wire group 121, Second sense wire group 122, the first signal conversion circuit 152 and second signal conversion circuit 153 are described, in display panel Other first pixel unit groups 111, the second pixel unit group 112, the first N select a selection circuit 130, the 2nd N to select a selection Circuit 140, the first sense wire group 121, the second sense wire group 122, the first signal conversion circuit 152 and second signal conversion electricity Road 153 is both referred to that setting is described below, and can also be repeated no more using other relevant designs.
As shown in Figure 3A, the first pixel unit group 111 includes the first adjacent pixel circuit 113 of N Leie time, the first sensing Line group 121 includes successively adjacent the first sense wire of N item 123, the sensing signal output end difference of the first pixel circuit of N column 113 It is electrically connected (for example, being directly connected to) with the first sense wire of N item 123, the sensing signal of the first pixel circuit of each column 113 can as a result, Corresponding first sense wire 123 is supplied to timesharing.As shown in Figure 3A, the second pixel unit group 112 include it is N number of successively The second adjacent pixel circuit 114, the second sense wire group 122 include successively adjacent the second sense wire of N item 124, N number of second picture The sensing signal output end of plain circuit 114 is electrically connected (for example, being directly connected to) with the second sense wire of N item 124 respectively, as a result, often The sensing signal of the second pixel circuit of column 114 can be supplied to corresponding second sense wire 124 with timesharing.For example, aobvious When showing that the J row pixel circuit (the first pixel circuit 113 and the second pixel circuit 114) in region is selected, each column pixel circuit Selected pixels circuit (positioned at the pixel circuit of J row) exports in (the first pixel circuit 113 or the second pixel circuit 114) Sensing signal can be supplied to corresponding sense wire.For example, J, which is more than or equal to 1, is less than or equal to pixel circuit in display area Line number.
For example, as shown in Figure 3A, the first pixel circuit of N column 113 is successively adjacent in the first direction dl, N item first is sensed Line 123 is successively adjacent in the first direction dl, and the second pixel circuit of N column 114 is successively adjacent in the first direction dl, N item second Sense wire 124 is successively adjacent in the first direction dl.It should be noted that the first sense wire of N item 123 in the first direction dl according to It is secondary it is adjacent refer to that D1 is sequentially arranged the first sense wire of N item 123 in a first direction, and do not set between the first adjacent sense wire 123 Set other sense wires (effective sense wire), the disclosure it is other it is " successively adjacent " also have similar meaning, repeat no more.
It should be noted that for clarity, the number of the first pixel in the first pixel circuit of each column 113 shown in Fig. 2A And the number of second pixel circuit 114 is two in the second pixel circuit of each column 114, but embodiment of the disclosure is not limited to This, is according to practical application request, the second pixel circuit of number and each column of the first pixel in the first pixel circuit of each column 113 The number of second pixel circuit 114 can also be 540,1080,2160 or other applicable numbers in 114.
For example, each pixel circuit is (for example, each first pixel circuit in the first pixel circuit of N column 113 shown in Fig. 3 A Each second pixel circuit 114 in the second pixel circuit of 113 and N column 114) it can be using 3T1C pixel electricity shown in Fig. 3 B Road, but embodiment of the disclosure is without being limited thereto, and according to practical application request, each pixel circuit shown in Fig. 3 A can also be used Pixel circuit or other applicable pixel circuits shown in pixel circuit shown in figure 1A, Figure 1B.For convenience of description, Fig. 3 B also shows Gone out first power voltage terminal VDD relevant to pixel circuit, second source voltage end VSS, sense wire SENL, data line DL and Light-emitting element E L.
For example, as shown in Figure 3B, each pixel circuit may include driving transistor T3, sense switch transistor T2 (its Control terminal is G2), gating transistor T1 (its control terminal be G1) and storage capacitance Cst；Drive transistor T3 the second pole and First pole is configured to be connected to the first pole of the first power voltage terminal VDD and light-emitting element E L；Light-emitting element E L's Second pole is connected to second source voltage end VSS；The first pole of sense switch transistor T2 and the first pole of driving transistor T3 Electrical connection；The first pole of sense switch transistor T2 and sense wire SENL are (for example, the first sense wire 123 or the second sense wire 124) it is electrically connected (for example, being connected directly).Have on sense wire SENL and is provided with volume on parasitic capacitance Csc or sense wire SENL Outer capacitor.For example, the voltage value of the first power voltage terminal VDD is higher than the voltage value of second source voltage end VSS.
For example, the second pole of the sense switch transistor T2 of N number of first pixel circuit 113 is (that is, the first pixel circuit 113 sensing signal output end) it is electrically connected respectively with the first sense wire of N item 123；The sense switch of N number of second pixel circuit 114 The second pole (that is, sensing signal output end of the second pixel circuit 114) of transistor T2 respectively with the second sense wire of N item 124 Electrical connection.For example, the second pole of the sense switch transistor T2 of N number of first pixel circuit 113 respectively with the first sense wire of N item 123 are directly connected to, the second pole of the sense switch transistor T2 of N number of second pixel circuit 114 respectively with the second sense wire of N item 124 are directly connected to.
For example, as shown in Figure 3B, the first pole of gating transistor T1 via data line DL and data drive circuit (in figure not Show) it is connected, to obtain data-signal from data drive circuit；The second pole of gating transistor T1 and the grid of driving transistor T3 Pole is connected with the first end of storage capacitance Cst, by the grid of acquired data-signal write driver transistor T3 and storage The first end of capacitor Cst；The first pole and sense switch transistor T2 of the second end of storage capacitance Cst and driving transistor T3 First is extremely connected, and is configured as memory data signal.
Fig. 3 C is the schematic diagram that the first N of one kind that at least one embodiment of the disclosure provides selects a selection circuit 130, Fig. 3 D It is that the 2nd N of one kind that at least one embodiment of the disclosure provides selects the schematic diagram of a selection circuit 140.For example, as shown in Figure 3A, It includes the first control terminal 131, the first signal output end 132 and N number of first signal input part 133 that first N, which selects a selection circuit 130, (for example, 133_1,133_2 ... 133_N-1 and 133_N), the first control terminal 131 is for receiving selection signal sequentially to select One of N number of first signal input part 133 is connect with the first signal output end 132；As shown in Figure 3B, the 2nd N selects a selection circuit 140 include the second control terminal 141, second signal output end 142 and N number of second signal input terminal 143 (for example, 143_1,143_ 2 ... 143_N-1 and 143_N), the second control terminal 141 sequentially selects N number of second signal to input for receiving selection signal One of end 143 is connect with second signal output end 142；As shown in Figure 3A, N number of first signal input part 133 respectively with N item first Sense wire 123 is connected, and N number of second signal input terminal 143 is connected with the second sense wire of N item 124 respectively.
For example, the first signal input part 133 being electrically connected to each other, the first sense wire 123 and the first pixel circuit 113 have Identical position number；Second signal input terminal 143, the second sense wire 124 and the second pixel circuit 114 tool being electrically connected to each other There is identical position number.For example, the first N selects the first letter that position number is X in the first direction dl in a selection circuit 130 Number input terminal 133, the first sense wire 123, Yi Ji that position number is X in the first direction dl in the first sense wire group 121 Position number is that the first pixel circuit 113 of X is electrically connected to each other in the first direction dl in first pixel unit group 111.
For example, the first N selects a selection circuit 130 and the 2nd N to select the specific implementation of a selection circuit 140 can basis Practical application request is selected；For clarity, the first N selects a selection circuit 130 and the 2nd N to select a selection circuit 140 Specific example will be described in Fig. 4 A and example shown in fig. 5.
It is selected it should be noted that " sequentially selecting " refers to according to predetermined order.For example, sequentially selecting N number of first signal One of input terminal 133 connect the position row that can refer to according to N number of first signal input part 133 with the first signal output end 132 Column sequence connect N number of first signal input part 133 sequentially with the first signal output end 132；Sequentially select N number of second signal One of input terminal 143 connect the position row that can refer to according to N number of second signal input terminal 143 with second signal output end 142 Column sequence connect N number of second signal input terminal 143 sequentially with second signal output end 142；For example, N number of first signal is defeated Enter end 133 sequentially connect with the first signal output end 132 according to position put in order and N number of second signal input terminal 143 Sequentially with the connection of second signal output end 142 according to put in order can be opposite for position.
In one example, can make the first N select in a selection circuit 130 along the positive direction of first direction D1 (for example, Along from left to right direction) first the first signal input part 133_1, second the first signal input part 133_2 ..., the N-1 the first signal input part 133_N-1 and the first signal input part of n-th 133_N are sequentially electric with the first signal output end 132 Connection；Accordingly, can make the second N select in a selection circuit 140 along the positive direction of first direction D1 (for example, along from a left side to Right direction) n-th second signal input terminal 143_N, the N-1 second signal input terminal 143_N-1 ..., second Binary signal input terminal 143_2 and first second signal input terminal 143_1 are sequentially connect with second signal output end 142.It is such In the case of, it is selected in the first sense wire 123 being connect with a the first signal input part 133 selected of X and with X The second sense wire 124 that connects of second signal input terminal 143 between the first sense wire of part 123 for being arranged and part second feel The sum of survey line 124 is equal to 2 × (N-X), that is, be electrically connected in the first signal input part 133 selected with X first It is set between pixel circuit 113 and the second pixel circuit 114 being electrically connected with the second signal input terminal 143 that X is selected The sum of the first pixel circuit of part 113 and the second pixel circuit of part 114 set is equal to 2 × (N-X), and herein, X is more than or equal to 1 and be less than or equal to N；For example, the first sense wire 123 being connect with the first signal input part 133 that X is selected and with The number for the first sense wire 123 being arranged between the second sense wire 124 that the second signal input terminal 143 that X is selected connects Mesh (N-X), equal to the first sense wire 123 being connect with the first signal input part 133 that X is selected and with X Number (the N- for the second sense wire 124 being arranged between the second sense wire 124 that the second signal input terminal 143 selected connects X).For example, the first sense wire 123 being connect with the first signal input part 133 finally selected and with finally selected The second sense wire 124 that connects of second signal input terminal 143 between the first sense wire of part 123 for being arranged and part second feel The sum of survey line 124 is equal to 0.
In another example, the first N can be made to select the positive direction (example in a selection circuit 130 along first direction D1 Such as, along from left to right direction) the first signal input part of n-th 133_N, N-1 the first signal input part 133_N- 1 ..., second the first signal input part 133_2 and first the first signal input part 133_1 is sequentially exported with the first signal 132 electrical connection of end；Accordingly, the second N can be made to select the positive direction in a selection circuit 140 along first direction D1 (for example, edge From left to right direction) first second signal input terminal 143_1, second second signal input terminal 143_2 ..., N-1 A second signal input terminal 143_N-1 and n-th second signal input terminal 143_N are sequentially connect with second signal output end 142. In such cases, the first sense wire 123 being connect with the first signal input part 133 that X is selected and with X quilt The first sense wire of part 123 being arranged between the second sense wire 124 that the second signal input terminal 143 of selection connects and part the The sum of two sense wires 124 is equal to 2 × (X-1), that is, be electrically connected in the first signal input part 133 selected with X First pixel circuit 113 and the second pixel circuit 114 being electrically connected with the second signal input terminal 143 that X is selected it Between the sum of the first pixel circuit of part 113 and the second pixel circuit of part 114 that is arranged be equal to 2 × (X-1), herein, X is greater than Equal to 1 and it is less than or equal to N.For example, the first sense wire 123 being connect with the first signal input part 133 that X is selected with And the first sense wire 123 being arranged between the second sense wire 124 being connect with the second signal input terminal 143 that X is selected Number (X-1), equal in the first sense wire 123 being connect with the first signal input part 133 that X is selected and with the The number for the second sense wire 124 being arranged between the second sense wire 124 that the X second signal input terminals 143 selected connect (X-1).For example, being chosen in the first sense wire 123 being connect with the first signal input part 133 finally selected and with last The first sense wire of part 123 being arranged between the second sense wire 124 that the second signal input terminal 143 selected connects and part second The sum of sense wire 124 is equal to 2N-2.
It should be noted that " sequentially selecting " is not limited to two examples above, according to practical application request, can also select Other applicable predetermined orders, if the first sense wire 123 being connect with the first signal input part 133 finally selected with And the first sense wire of part being arranged between the second sense wire 124 being connect with the second signal input terminal 143 selected at first 123 and the sum of the second sense wire of part 124 be more than or equal to 1 (for example, be more than or equal to 1 be less than or equal to N-1)；In such cases, The first pixel circuit 113 being electrically connected with the first signal input part 133 finally selected and with selected at first The second picture of the first pixel circuit of part 113 and part being arranged between the second pixel circuit 114 that binary signal input terminal 143 connects The sum of plain circuit 114 was more than or equal to for 1 (for example, being more than or equal to 1 is less than or equal to N-1).
For example, by so that in the first pixel circuit 113 being electrically connected with the first signal input part 133 finally selected And the part first being arranged between the second pixel circuit 114 being electrically connected with the second signal input terminal 143 selected at first The sum of pixel circuit 113 and the second pixel circuit of part 114 was more than or equal to for 1 (for example, being more than or equal to 1 is less than or equal to N-1), with The first pixel circuit 113 that the first signal input part 133 finally selected is electrically connected and with the second letter for being selected at first The second pixel circuit 114 that number input terminal 143 connects is non-conterminous, in such cases, although first in the first pixel unit group 111 Second picture in the systematic error for the sensing signal with maximum system error that pixel circuit 113 exports and the second pixel unit Difference between the systematic error for the sensing signal with minimum system error that plain circuit 114 exports for example remains unchanged, but It is the first pixel circuit 113 and second that the sensing signal with maximum system error is outputed in the first pixel unit group 111 It is non-conterminous that the second pixel circuit 114 with minimum system error is outputed in pixel unit, it is possible thereby to reduce adjacent picture The maximum value of the difference of the systematic error of the brightness of the light-emitting component of plain circuit drives.For example, in each of image to be shown In the case that the grayscale of image sub-pixels is mutually the same, the display panel that at least one embodiment of the disclosure provides can be reduced The maximum value of the luminance difference of the first adjacent pixel circuit 113 and the light-emitting component of the second pixel circuit 114 driving.
For example, the first signal conversion circuit 152 and second signal conversion circuit 153 are respectively analog to digital conversion circuit, and point It is not configured as the received analog signal of institute being converted to digital signal, to be used for subsequent processing (for example, calculating each pixel electricity The threshold voltage of the driving transistor on road).For example, as shown in Figure 3A, the signal receiving end of the first signal conversion circuit 152 and the The connection of one signal output end 132, the signal receiving end of second signal conversion circuit 153 are connect with second signal output end 142.Example Such as, when certain a line pixel circuit in display area is scanned (by selecting), the first signal conversion circuit 152 can be via correspondence 123 the first pixel unit of received in sequence group 111 of the first sense wire in N number of first pixel circuit 113 sensing signal output end N number of first sensing signal of output, and it is for example sequentially digital by corresponding the first of the received N number of first sensing signal conversion of institute Signal；Second signal conversion circuit 153 can be via corresponding second sense wire, 124 the second pixel unit of received in sequence group 112 In N number of second pixel circuit 114 the output of sensing signal output end N number of second sensing signal, and for example will sequentially be received N number of second sensing signal conversion corresponding second digital signal.
For example, detection circuit can also be arranged between every sense wire and signal conversion circuit according to practical application request (not shown), that is, one end of detection circuit is connected with sense wire, the other end is connected with signal conversion circuit；Detection electricity Road can obtain the voltage (analog signal) on the sense wire of particular moment based on sampled signal, and by analog signal obtained It is supplied to signal conversion circuit.For example, the output end of detection circuit is also connected with amplifying circuit according to practical application request, detection The analog signal of circuit output is by amplification and then is supplied to signal conversion circuit.For example, the both ends of detection circuit can be divided It does not select between a selection circuit and is connected with sense wire and N, a selection circuit and signal conversion circuit phase can also be selected with N respectively Even.
For example, display panel can also include signal adjustment circuit 154.For example, suitable in N number of first signal input part 133 It is secondary connect with the first signal output end 132 according to position put in order with N number of second signal input terminal 143 sequentially with second The connection of signal output end 142 institute according to position put in order it is opposite in the case where, signal adjustment circuit is configured to believe second The signal of number conversion circuit output or the signal of the first signal conversion circuit output backward in time.For example, signal adjustment electricity Road 154 can be realized based on FPGA (field programmable gate array) or other programmable circuits used.For example, passing through setting letter Number adjustment circuit 154 can simplify the difficulty of at least one of follow-up signal processing, signal storage and signal-obtaining.
In one example, signal adjustment circuit 154 is configured as the signal output end with second signal conversion circuit 153 It is connected, and is configured as 153 received signal of second signal conversion circuit (digital signal) backward in time, so that letter N number of second sensing signal that number adjustment circuit 154 exports sequence in time and corresponding N number of second pixel circuit 114 Position puts in order unanimously.For example, second signal conversion circuit 153 can will be in time according to following first order sequences Signal is converted into the signal according to following second order sequences, and herein, first order sequence refers to: along the pros of first direction D1 The second sensing signal exported to second pixel circuit of n-th 114 in (for example, along from left to right direction), N-1 the second pictures The second sensing signal that plain circuit 114 exports ..., the second sensing signal of second the second pixel circuit 114 output and Second sensing signal of first the second pixel circuit 114 output in time by first arranging backward；Second order sequence refers to: Along the second sense of first the second pixel circuit 114 output of the positive direction (for example, along from left to right direction) of first direction D1 Survey signal, the second sensing signal of second the second pixel circuit 114 output ..., N-1 the second pixel circuits 114 it is defeated The second sensing signal out and the N sensing signal of first the second pixel circuit 114 output are in time from elder generation to heel row Cloth.
In another example, signal adjustment circuit 154 is configured as exporting with the signal of the first signal conversion circuit 152 End is connected, and is configured as 152 received signal of the first signal conversion circuit (digital signal) backward in time, so that N number of first sensing signal sequence in time that signal adjustment circuit 154 exports and corresponding N number of first pixel circuit 113 Position put in order unanimously.
It should be noted that in the case where " sequentially select " corresponds to other applicable predetermined orders, signal adjustment electricity Road 154, which is further configured such that in the first pixel unit group, is located at the first sensing exported with multiple first pixel circuits of a line Multiple first pixel circuits being located at a line in the distributing order of signal in time and the first pixel unit group are the Distributing order on one direction is consistent；Signal adjustment circuit 154 be further configured such that in the second pixel unit group be located at it is same In the distributing order and the second pixel unit group of second sensing signal of capable multiple second pixel circuits output in time Be located at it is consistent with multiple second pixel circuits distributing order in a first direction of a line.
For example, as shown in Figure 3A, display panel can also include computing circuit 155, computing circuit 155 be configured as and the Two in one signal conversion circuit 152, second signal conversion circuit 153 and signal adjustment circuit 154 are connected (for example, with the One signal conversion circuit 152 and second signal conversion circuit 153 are connected or adjust with the first signal conversion circuit 152 and signal Circuit 154 is connected), to receive the first sensing signal and the second sensing signal, and the first pixel is obtained based on the first sensing signal The threshold voltage of each first pixel circuit 113 in unit group 111, and the second pixel unit is obtained based on the second sensing signal The threshold voltage of each second pixel circuit 114 in group 112.For example, the threshold voltage of each first pixel circuit 113 and each The threshold voltage of second pixel circuit 114 may be respectively used for each first pixel circuit 113 and each second pixel circuit In 114 threshold compensation.For example, the threshold value of the threshold voltage of each first pixel circuit 113 and each second pixel circuit 114 Voltage can store in memory.
In another example, memory is configured as the first sensing signal of storage and the second sensing signal, such situation Under, memory and two phases in the first signal conversion circuit 152, second signal conversion circuit 153 and signal adjustment circuit 154 Even.
For example, in the threshold compensation to each first pixel circuit 113 and each second pixel circuit 114, controller (for example, sequence controller) is configured to receive the first data-signal of each first pixel circuit 113 and threshold voltage and each The second data-signal and threshold voltage of a second pixel circuit 114, and it is configured to the first data-signal and the first pixel The threshold voltage of circuit 113 obtains compensated first data-signal, based on the second data-signal and the second pixel circuit 114 Threshold voltage obtains compensated second data-signal, above-mentioned compensated first data-signal and compensated second data letter Number be configured to supply to data drive circuit, data drive circuit be configured as above-mentioned compensated first data-signal and Compensated second data-signal is converted to corresponding analog and digital signal, and above-mentioned corresponding analog and digital signal is supplied to Each first pixel circuit 113 and the second pixel circuit 114 of display panel.
In some instances, above-mentioned computing circuit 155, the first signal conversion circuit 152, second signal conversion circuit 153, Signal adjustment circuit 154, memory, controller and data drive circuit for example can integrate in an integrated circuit, the collection It can be arranged directly on display panel at circuit or be electrically connected by bonding with display panel.
Fig. 4 A is an exemplary schematic diagram of display panel shown in Fig. 3 A, and Fig. 4 B shows the first N shown in Fig. 4 A The schematic diagram of a selection circuit 130 is selected, Fig. 4 C shows the schematic diagram that the 2nd N shown in Fig. 4 B selects a selection circuit 140.
For example, as shown in Figure 4 A and 4 B shown in FIG., the first control terminal 131 includes N number of successively adjacent first selection signal end 134；As shown in Fig. 4 A and Fig. 4 C, the second control terminal 141 includes N number of successively adjacent the second selection signal end 144.
For example, display panel further includes N item selection control line 151 as shown in Fig. 4 A- Fig. 4 C；It is selected corresponding to X The first signal input part 133 first selection signal end 134 and the second signal input terminal that is selected corresponding to X 143 the second selection signal end 144 is connected with identical selection control line 151.In such cases, selection signal includes N number of choosing Select subsignal；Corresponding to the first control terminal 131 of a the first signal input part 133 selected of X and corresponding to X quilt Second control terminal 141 of the second signal input terminal 143 of selection receives identical selection subsignal.
It should be noted that embodiment of the disclosure provides the first signal input part 133 for corresponding to that X is selected First selection signal end 134 and the second selection signal end 144 of the second signal input terminal 143 selected corresponding to X It is not limited to be set as the form being connected with same selection control line with identical selection control line 151, according to practical application request, The two can also be connected from different selection control lines, as long as guaranteeing to correspond to the first signal input part 133 that X is selected The first control terminal 131 and the second control terminal 141 of the second signal input terminal 143 selected corresponding to X receive phase Same selection subsignal.
For example, as shown in Fig. 4 A- Fig. 4 C, it includes N number of successively adjacent first choice that the first N, which selects a selection circuit 130, Circuit 135, it includes N number of successively adjacent second selection sub-circuit 145 that the 2nd N, which selects a selection circuit,；N number of first choice sub-circuit Each of 135 include control terminal, first end and second end, the control terminal of each of N number of first choice sub-circuit 135 and N number of the Corresponding one of one selection signal end 134 is connected, the first end of each of N number of first choice sub-circuit 135 and N number of first letter Corresponding one is connected in number input terminal 133, and the second end of each of N number of first choice sub-circuit 135 and the first signal export End 132 is connected；Each of N number of second selection sub-circuit 145 includes control terminal, first end and second end, N number of second selection son electricity The control terminal on each of road 145 one corresponding with N number of second selection signal end 144 is connected, N number of second selection sub-circuit Each of 145 first end is connected with corresponding one in N number of second signal input terminal 143, N number of second selection sub-circuit 145 Each of second end be connected with second signal output end 142.
It should be noted that the display panel that at least one embodiment of the disclosure provides is not limited to using shown in Fig. 4 B First N selects a selection circuit, according to practical application request, can also select a selection circuit 1 using the first N shown in Fig. 4 D.Figure The first N of another kind that at least one embodiment that 4D shows the disclosure provides selects the schematic diagram of a selection circuit 130.
As shown in Figure 4 D, it further includes the first decoding circuit 170, the first decoding circuit 170 that the first N, which selects a selection circuit 130, Including C signal input part 171 and N number of signal output end 172, when C signal input part 171 receives binary signal, C= Ceil (log2 (N)), ceil (log2 (N)) are indicated to log2 (N)) it is rounded downwards.For example, in N=5-8, C=3；N When=9-16, C=4.In such cases, as shown in Figure 4 D, the first control terminal 131 includes C first selection signal end 134, choosing Selecting signal includes C selection subsignal；The C signal input part 171 of first decoding circuit 170 respectively with C first choice control End 134 processed be connected, N number of signal output end 172 of the first decoding circuit 170 respectively with it is N number of selection sub-circuit control terminal phase Even；First decoding circuit 170 is configured to received signal and makes a corresponding signal for the first decoding circuit 170 defeated Outlet 172 exports useful signal, and the other signals output end 172 of the first decoding circuit 170 is made to export invalid signals, thus Allow the first N that a selection circuit 130 is selected sequentially to select one of N number of first signal input part 133 and the first signal output end 132 connections.Accordingly, it further includes the second decoding circuit (not shown), the second decoding electricity that the 2nd N, which selects a selection circuit 140, Road includes C signal input part and N number of signal output end, and details are not described herein again.
It should be noted that signal input part 171 is not limited to receive binary signal, it can also be according to M binary signal (example Such as, decadic signaling or hexadecimal signal), in such cases, C=ceil (logM (N)), ceil (logM (N)) are indicated To logM (N)) it is rounded downwards.
For example, as shown in Figure 4 A, each selection sub-circuit is (for example, N number of first choice sub-circuit 135 and N number of second selection Each of sub-circuit 145) it can be implemented as transistor, the grid of transistor, the first pole and the second pole are respectively configured as selecting Control terminal, the first end and second end of sub-circuit.It should be noted that each selection sub-circuit is not limited to include described in Fig. 4 A One transistor, according to practical application request, each selection sub-circuit can also include two multiple transistors combination or It may include other applicable circuit structures.For example, the transistor on state characteristic having the same that multiple selection sub-circuits are selected, The transistor that multiple selection sub-circuits are selected for example is N-type transistor or is P-type transistor.
For example, as shown in Figure 4 A, the corresponding first choice sub-circuit 135 of the first signal input part 133 that X is selected And the second signal input terminal 143 corresponding second that X is selected selects sub-circuit 145 to be located at same a line；Accordingly, The second signal input that X corresponding first control terminals 131 of the first signal input part 133 selected and X are selected 143 corresponding first control terminals 131 are held to be located at same a line.
It should be noted that N selects a circuit (the first N selects a circuit and the 2nd N to select a circuit) to be not limited to shown in Fig. 4 A Example, N select a circuit can also be using other applicable circuit structures, and details are not described herein again.
It should be noted that the transistor used in embodiment of the disclosure can be thin film transistor (TFT) or field effect transistor Pipe or the identical switching device of other characteristics.Here the source electrode of the transistor used, drain electrode can be symmetrical, institute in structure It can be and be not different in structure with its source electrode, drain electrode.In embodiment of the disclosure, conduct is removed in order to distinguish transistor The grid of control terminal directly describes a wherein extremely first end, another extremely second end, so in the embodiment of the present disclosure all Or the first end and second end of portion of transistor can be interchanged as needed.For example, the transistor of the embodiment of the present disclosure First end can be source electrode, and second end can be drain electrode；Alternatively, the first end of transistor is drain electrode, second end is source electrode.This Outside, transistor can be divided into N-type and P-type transistor according to the characteristic differentiation of transistor, embodiment of the disclosure is to transistor Type be not construed as limiting, those skilled in the art can realize the disclosure using N-type and/or P-type transistor according to actual needs In embodiment.
At least one embodiment of the disclosure additionally provides a kind of display panel provided for disclosure any embodiment Signal reading method comprising: select a selection circuit sequentially to select one of N number of first signal input part and by the first N The connection of one signal output end；A selection circuit is selected sequentially to select one of N number of second signal input terminal and second signal by the 2nd N Output end connection.
Fig. 5 is the schematic flow of the signal reading method for the display panel that at least one embodiment of the disclosure provides Figure, the signal reading method include the following steps S100 and S200.
Step S100: a selection circuit is selected sequentially to select one of N number of first signal input part and the first signal by the first N Output end connection.
Step S200: a selection circuit is selected sequentially to select one of N number of second signal input terminal and second signal by the 2nd N Output end connection.
For example, being selected in the first sense wire being connect with a the first signal input part selected of X and with X Second signal input terminal connection the second sense wire between be arranged the second sense wire of the first sense wire of part and part it is total Number is equal to 2 × (N-X) or 2 × (X-1)；That is, the first picture being electrically connected in the first signal input part selected with X The part first being arranged between plain circuit and the second pixel circuit being electrically connected with the second signal input terminal that X is selected The sum of the second pixel circuit of pixel circuit and part is equal to 2 × (N-X) or 2 × (X-1) herein, and X is more than or equal to 1 and is less than Equal to N.For example, the signal reading method of above-mentioned display panel can be found in the embodiment of display panel, details are not described herein.
For example, voltage of the step S100 in the first pole of the driving transistor of multiple first pixels is relatively stable and multiple It is executed before the driving transistor cutoff of first pixel.For example, the voltage of the first pole of the driving transistor of each first pixel It is greater than 90% (for example, big with the ratio of the voltage (source voltage) of the first pole after the driving transistor cutoff of first pixel In 95%, it is greater than 98%, is greater than 99% or is greater than 99.5%).
For example, voltage of the step S200 in the first pole of the driving transistor of multiple second pixels is relatively stable and multiple It is executed before the driving transistor cutoff of second pixel.For example, the voltage of the first pole of the driving transistor of each second pixel It is greater than 90% (for example, big with the ratio of the voltage (source voltage) of the first pole after the driving transistor cutoff of second pixel In 95%, it is greater than 98%, is greater than 99% or is greater than 99.5%).
At least one embodiment of the disclosure additionally provides a kind of display device comprising disclosure any embodiment provides Display panel.
Fig. 6 is the exemplary block diagram for the display device 10 that at least one embodiment of the disclosure provides.For example, such as Fig. 6 institute Show, which includes display panel 100.
For example, Fig. 7 shows the schematic diagram of display device 10 shown in fig. 6.For example, as shown in fig. 7, the display device 10 Pixel circuit, signal adapter ADC, data line DL, sense wire SENL and control device 120 including display panel 100, display Device 10 has display area and around the neighboring area of display area setting；The display area of display device 10 includes multiple pictures Plain unit, each pixel unit may include pixel circuit, and pixel unit included by display device 10 can be for example arranged into Array, correspondingly pixel circuit can for example be arranged into array.It should be noted that for clarity, display device 10 is only shown A pixel circuit is gone out, but embodiment of the disclosure is without being limited thereto.
As shown in fig. 7, control device 120 is arranged in the neighboring area except display area.For example, display device 10 (can not also it show including being also disposed at data drive circuit 130, detection circuit 140 and the scan drive circuit of neighboring area Out).
For example, pixel circuit can be using shown in pixel circuit, pixel circuit shown in figure 1A shown in Fig. 3 B, Figure 1B Pixel circuit or other applicable pixel circuits or other applicable pixel circuits, the specific structure of pixel circuit are no longer superfluous herein It states.As shown in fig. 7, pixel circuit includes that driving transistor T3, sense switch transistor T2 (its control terminal is G2) and gating are brilliant Body pipe T1 (its control terminal is G1), the driving transistor include the first pole, sense wire SENL and the first of driving transistor T3 Pole electrical connection.
For example, detection circuit 140 is configured to read the first sensing voltage from sense wire SENL.For example, detection circuit 140 can Think sample circuit, sample circuit can provide sampled signal SAMP, and can be via sense switch transistor T2 from driving transistor The first pole of T3 obtains the first sensing voltage.
Display device 10 for example further includes selection signal generator (not shown), which is configured Selection signal is generated for the control signal of response control apparatus 120.
For example, control device 120 is configured to the sensing signal of signal adapter ADC offer or using based on signal The threshold signal (threshold voltage) that the sensing signal that converter ADC is obtained obtains carries out threshold to each pixel circuit of display panel Value complement repays (for example, the compensated signal for generating each pixel circuit for display panel).
For example, control device 120 is additionally configured to control data drive circuit 130 and detection circuit 140.For example, data are driven Dynamic circuit 130 is configured to provide compensated data voltage at different times according to practical application request.Scan drive circuit For providing the scanning signal of sense switch transistor T2 and gating transistor T1, to control sense switch transistor T2 and gating The on state (for example, on or off) of transistor T1.
It should be noted that for convenience of description, some embodiments of the present disclosure introduce signal input part, signal output end Deng, it will be appreciated by a person skilled in the art that signal input part, signal output end etc. be signal transmission via path, and It does not require to exist such as pad structure in display panel as signal input part, signal output end.In some instances, such as Shown in Fig. 4 A, signal input part, signal output end etc. can be integrally-formed with sense wire, repeat no more.
Although above having used general explanation and specific embodiment, detailed description has been made to the disclosure, On the basis of the embodiment of the present disclosure, it can be made some modifications or improvements, this is apparent to those skilled in the art 's.Therefore, these modifications or improvements on the basis of without departing from disclosure spirit, it is claimed to belong to the disclosure Range.
The above is only the exemplary embodiment of the disclosure, not for the protection scope of the limitation disclosure, this public affairs The protection scope opened is determined by the attached claims.

Claims (16)

1. a kind of display panel, comprising: the first pixel unit group, the second pixel unit group, the first N select a selection circuit, the 2nd N A selection circuit, the first sense wire group and the second sense wire group are selected,
Wherein, the first pixel unit group and the second pixel unit group are disposed adjacent；
The first pixel unit group includes N number of successively adjacent the first pixel circuit, and the first sense wire group includes successively Adjacent the first sense wire of N item, the sensing signal output end of N number of first pixel circuit are sensed with the N item first respectively Line electrical connection；
The second pixel unit group includes N number of successively adjacent the second pixel circuit, and the second sense wire group includes successively Adjacent the second sense wire of N item, the sensing signal output end of N number of second pixel circuit are sensed with the N item second respectively Line electrical connection；
It includes the first control terminal, the first signal output end and N number of first signal input part, institute that first N, which selects a selection circuit, The first control terminal is stated for receiving selection signal sequentially to select one of described N number of first signal input part and first signal Output end connection；
It includes the second control terminal, second signal output end and N number of second signal input terminal, institute that 2nd N, which selects a selection circuit, The second control terminal is stated for receiving the selection signal sequentially to select one of described N number of second signal input terminal and described second Signal output end connection；
N number of first signal input part is electrically connected with first sense wire of N item respectively, N number of second signal input terminal It is electrically connected respectively with second sense wire of N item；And
The first sense wire being connect with the first signal input part finally selected and with the second signal that is selected at first The sum for part first sense wire and part second sense wire being arranged between second sense wire of input terminal connection More than or equal to the integer that 1, N is more than or equal to 2.
2. display panel according to claim 1, wherein connect described with the first signal input part finally selected The first sense wire and the second sense wire for being connect with the second signal input terminal finally selected between the part institute that is arranged The sum for stating the first sense wire and part second sense wire is equal to 0 or 2N-2.
3. display panel according to claim 1, wherein connect in the first signal input part selected with X Described in the part being arranged between first sense wire and the second sense wire being connect with the second signal input terminal that X is selected The sum of first sense wire and part second sense wire be equal to 2 × (N-X) or 2 × (X-1) and the X be greater than etc. In 1 and be less than or equal to N.
4. display panel according to claim 3, wherein connect in the first signal input part selected with the X It is arranged between the first sense wire connect and the second sense wire being connect with the second signal input terminal that the X is selected The number of first sense wire, equal to the first sense wire being connect in the first signal input part selected with the X And second sense wire being arranged between the second sense wire being connect with the second signal input terminal that the X is selected Number.
5. display panel according to claim 1 to 4, what is connect with the first signal input part finally selected Described in the part being arranged between first sense wire and the second sense wire being connect with the second signal input terminal selected at first The sum of first sense wire and part second sense wire is less than or equal to N-1.
6. display panel according to claim 1 to 4, wherein first control terminal includes N number of successively adjacent First selection signal end；
Second control terminal includes N number of successively adjacent the second selection signal end.
7. display panel according to claim 6, wherein the selection signal includes N number of selection subsignal；And
It is chosen corresponding to the first control terminal of a the first signal input part selected of the X and corresponding to the X Second control terminal of the second signal input terminal selected receives identical selection subsignal.
8. display panel according to claim 7 further includes N item selection control line, wherein described to correspond to the X The first selection signal end of a the first signal input part selected and second letter selected corresponding to the X Second selection signal end of number input terminal is connected with identical selection control line.
9. display panel according to claim 6, wherein it includes N number of successively adjacent that the first N, which selects a selection circuit, First choice sub-circuit, it includes N number of successively adjacent second selection sub-circuit that the 2nd N, which selects a selection circuit,；
Each of described N number of first choice sub-circuit includes control terminal, first end and second end, N number of first choice electricity Corresponding one connected, N number of first choice sub-circuit of the control terminal on each of road and N number of first selection signal end Each of first end with corresponding one in N number of first signal input part be connected, N number of first choice sub-circuit Each second end is connected with first signal output end；And
Each of described N number of second selection sub-circuit includes control terminal, first end and second end, N number of second selection son electricity Corresponding one connected, N number of second selection sub-circuit of the control terminal on each of road and N number of second selection signal end Each of first end be connected in N number of second signal input terminal corresponding one, N number of second selection sub-circuit Each second end is connected with the second signal output end.
10. display panel according to claim 1 to 4, wherein the display panel includes multiple first pixel lists Tuple, multiple second pixel unit groups, multiple first N select a selection circuit, multiple 2nd N to select a selection circuit, multiple first Sense wire group and multiple second sense wire groups；
The multiple first pixel unit group and the multiple second pixel unit group in the multiple first pixel unit group and Being arranged in juxtaposition on direction for the multiple second pixel unit group is arranged alternately；
The multiple first N selects a selection circuit, the multiple 2nd N that a selection circuit is selected to be arranged alternately in said direction； And
The multiple first sense wire group and the multiple second sense wire group are arranged alternately in said direction.
11. display panel according to claim 1 to 4 further includes the first signal conversion circuit and second signal conversion Circuit, wherein the signal receiving end of first signal conversion circuit is connect with first signal output end, second letter The signal receiving end of number conversion circuit is connect with the second signal output end.
12. display panel according to claim 11, wherein first signal conversion circuit and the second signal turn Changing circuit is respectively analog to digital conversion circuit.
13. display panel according to claim 11 further includes signal adjustment circuit, wherein the signal adjustment circuit The signal of the signal for exporting the second signal conversion circuit or first signal conversion circuit output is configured in the time Upper backward.
14. display panel according to claim 1 to 4, wherein N number of first pixel circuit and described N number of Each of two pixel circuits include driving transistor and sense switch transistor；
The second pole and the first pole of the driving transistor are configured to be connected to the first power voltage terminal and the member that shines First pole of part；
Second pole of the light-emitting component is connected to second source voltage end；
First pole of the sense switch transistor is electrically connected with the first pole of the driving transistor；
Second pole of the sense switch transistor of N number of first pixel circuit is electrically connected with first sense wire of N item respectively； And
Second pole of the sense switch transistor of N number of second pixel circuit is electrically connected with second sense wire of N item respectively.
15. a kind of display device, including the display panel as described in claim 1-14 is any.
16. a kind of signal reading method of the display panel as described in claim 1-14 is any, comprising:
A selection circuit is selected sequentially to select one of described N number of first signal input part and first signal by the first N Output end connection；
A selection circuit is selected sequentially to select one of described N number of second signal input terminal and the second signal by the 2nd N Output end connection.
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