CN108399879A - The test circuit of organic light emitting display test device and organic light emitting display panel - Google Patents
The test circuit of organic light emitting display test device and organic light emitting display panel Download PDFInfo
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- CN108399879A CN108399879A CN201810259887.4A CN201810259887A CN108399879A CN 108399879 A CN108399879 A CN 108399879A CN 201810259887 A CN201810259887 A CN 201810259887A CN 108399879 A CN108399879 A CN 108399879A
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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
- G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays
-
- 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
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2310/00—Command of the display device
- G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
- G09G2310/0202—Addressing of scan or signal lines
- G09G2310/0218—Addressing of scan or signal lines with collection of electrodes in groups for n-dimensional addressing
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2310/00—Command of the display device
- G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
- G09G2310/0243—Details of the generation of driving signals
- G09G2310/0251—Precharge or discharge of pixel before applying new pixel voltage
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0257—Reduction of after-image effects
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
- G09G2330/02—Details of power systems and of start or stop of display operation
- G09G2330/021—Power management, e.g. power saving
-
- 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
- G09G3/2003—Display of colours
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Electroluminescent Light Sources (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Control Of El Displays (AREA)
Abstract
The present invention relates to a kind of test circuit of organic light emitting display test device and organic light emitting display panel, which includes：Test circuit and display panel；The display panel includes multiple pixel units, and it includes multiple first pixel unit groups and multiple second pixel unit groups respectively to arrange the pixel unit；The test circuit includes at least one source signal line, and at least one source signal line is connect with each first pixel unit group and each second pixel unit group respectively.By the way that the multiple row pixel unit of display panel is divided into multiple first pixel unit groups and multiple second pixel unit groups, by inputting the first signal and the second signal respectively to each first pixel unit group and each second pixel unit group respectively in different sequential, so that each pixel unit on display panel shows gridiron pattern picture, it realizes and the ghost of display panel is tested, without to elements such as display panel installation driving chip, flexible PCB and polaroids, avoiding the waste of element.
Description
Technical field
The present invention relates to luminescence display technical fields, aobvious more particularly to organic light emitting display test device and organic light emission
Show the test circuit of panel.
Background technology
AMOLED (Active Matrix/Organic Light Emitting Diode, active matrix organic light-emitting two
Pole pipe) display device that belongs to spontaneous light type, have many advantages, such as that contrast is high, response is fast and small power consumption.
AMOLED shows fixed single picture in long-time, and TFT, which is stressed (bias stress), to be influenced or due to hair
The decaying of brightness, light emission luminance will produce variation, lead to poor display.
In order to test AMOLED, gridiron pattern picture is typically chosen as ghost test pictures.Show that gridiron pattern is drawn
Face for a period of time after, then switch to grey screen, the image retention of " gridiron pattern picture " will appear under grey screen.In grey screen
After lighting time enough, after image retention disappearance or powered-down standing enough time, image retention disappears, and this ghost also referred to as can
Restore ghost.If image retention does not disappear, referred to as irrecoverable ghost.By detecting the time of ghost disappearance, to which detection should
AMOLED's displays whether qualification.
Since the input of display gridiron pattern picture data (data) signal is complex, traditional ghost test is needed aobvious
It after showing that module is made, is shown by driver IC (driving chip) driving panel, to realize that ghost is tested, and is shown
Module needs that driver IC, FPC (Flexible Printed Circuit, flexible PCB) and polarisation are arranged on panel
The elements such as piece then cause the waste of the materials such as driver IC, FPC and polaroid, lead if detection ghost test is not up to standard
Cause production, testing cost higher.
Invention content
Based on this, it is necessary to provide a kind of test electricity of organic light emitting display test device and organic light emitting display panel
Road.
A kind of organic light-emitting display device and its pixel circuit, including：Test circuit and display panel；
The display panel includes multiple pixel units, and each pixel unit is arranged in multiple lines and multiple rows, and each row
The pixel unit includes multiple first pixel unit groups and multiple second pixel unit groups；
The test circuit includes at least one source signal line, and at least one source signal line is respectively with each described first
Pixel unit group and the connection of each second pixel unit group, at least one source signal line are used in the first sequential to each
The first pixel unit group inputs the first signal, inputs second signal to each second pixel unit group, and be used for
Second sequential inputs second signal to each first pixel unit group, to each second pixel unit group input, first letter
Number.
At least one source signal line includes the first source signal line and the second source signal in one of the embodiments,
Line, first source signal line are connect with each first pixel unit group, second source signal line and each second picture
Plain unit group connection, first source signal line are used to believe to each first pixel unit group input first in the first sequential
Number, second signal is inputted to each first pixel unit group in the second sequential, second source signal line is used at first
Sequence inputs second signal to each second pixel unit group, and first is inputted to each second pixel unit group in the second sequential
Signal.
Further include multiple switch circuit in one of the embodiments, each switching circuit is respectively provided with a switching tube,
The control terminal of each switching tube for receiving Continuity signal, at least one source signal line by each switching circuit with
Each first pixel unit group and each second pixel unit group connection.
Each switching circuit includes multiple first switch circuit groups and multiple second switches in one of the embodiments,
Circuit group, each first switch circuit group are connect with the first pixel unit group, each second switch circuit
Group is connect with the second pixel unit group, and at least one source signal line is by each first switch circuit group and respectively
First pixel unit group connection, at least one source signal line pass through each second switch circuit group and each described the
Two pixel unit groups connect, and each first group of switch is connected, each described second for receiving Continuity signal in the first sequential
Group switch is connected for receiving Continuity signal in the second sequential.
In one of the embodiments, each pixel unit include multiple red pixel units, multiple green pixel cells and
Multiple indigo plant pixel units, each red pixel unit are arranged in multiple row, and each green pixel cell is arranged in multiple row, each indigo plant
Pixel unit is arranged in multiple row, and at least one source signal line includes feux rouges source signal line, green light source signal line and blue-light source
Signal wire, the feux rouges source signal line are connect with each row red pixel unit, and the green light source signal line and each row are described green
Pixel unit connects, and the blue light source signal line is connect with each row blue pixel unit.
Each row red pixel unit and the row green pixel cell and a row institute in one of the embodiments,
Blue pixel unit is stated to be disposed adjacent successively.
Each first pixel unit group includes the red pixel unit of multiple row, multiple row green pixel in one of the embodiments,
Unit and multiple row indigo plant pixel unit, each second pixel unit group include the red pixel unit of multiple row, multiple row green pixel cell and
Multiple row indigo plant pixel unit.
Further include multiple scan lines in one of the embodiments, each scan line and pixel unit described in a line
Connection.
The time span of first sequential is a scan line to pixel described in a line in one of the embodiments,
The integral multiple of the output time of the scanning signal of unit, the time span of second sequential are a scan line to a line institute
State the integral multiple of the output time of the scanning signal of pixel unit.
A kind of test circuit of organic light emitting display panel, including at least one source signal line, at least one source letter
Number line with multiple first pixel unit groups and multiple second pixel unit groups for connect, at least one source signal line use
In inputting the first signal to each first pixel unit group in the first sequential, to each second pixel unit group input second
Signal inputs second signal to each first pixel unit group in the second sequential, is inputted to each second pixel unit group
First signal.
The test circuit of above-mentioned organic light emitting display test device and organic light emitting display panel, by by display panel
Multiple row pixel unit is divided into multiple first pixel unit groups and multiple second pixel unit groups, by different sequential respectively to each
First pixel unit group and each second pixel unit group input the first signal and the second signal respectively, and coordinate scanning signal, make
It obtains each pixel unit on display panel and shows gridiron pattern picture, and then realize and the ghost of display panel is tested, without right
Display panel installs the elements such as driving chip, flexible PCB and polaroid, effectively prevents the waste of said elements so that
Production, testing cost effectively reduce.
Description of the drawings
Fig. 1 is the circuit diagram of the organic light emitting display test device of one embodiment；
Fig. 2 is the time diagram of the source signal of one embodiment；
Fig. 3 is the electrical block diagram of the pixel circuit of one embodiment；
Fig. 4 is the schematic diagram of the gridiron pattern picture of the display panel of one embodiment；
Fig. 5 is the circuit diagram of the organic light emitting display test device of another embodiment；
Fig. 6 to Fig. 8 be respectively the source signal of another embodiment, scanning signal and Continuity signal time diagram.
Specific implementation mode
To facilitate the understanding of the present invention, below with reference to relevant drawings to invention is more fully described.In attached drawing
Give the better embodiment of the present invention.But the present invention can realize in many different forms, however it is not limited to herein
Described embodiment.On the contrary, the purpose of providing these embodiments is that making to understand more the disclosure
Add thorough and comprehensive.
Unless otherwise defined, all of technologies and scientific terms used here by the article and belong to the technical field of the present invention
The normally understood meaning of technical staff is identical.Used term is intended merely to description tool in the description of the invention herein
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term " and or " used herein includes one or more
Any and all combinations of relevant Listed Items.
For example, a kind of organic light emitting display test device, including：Test circuit and display panel；The display panel packet
Multiple pixel units are included, each pixel unit is arranged in multiple lines and multiple rows, and it includes multiple respectively to arrange the pixel unit
One pixel unit group and multiple second pixel unit groups；The test circuit includes at least one source signal line, and described at least one
A source signal line is connect with each first pixel unit group and each second pixel unit group respectively, described at least one
Source signal line is used to input the first signal to each first pixel unit group in the first sequential, to each second pixel unit
Group input second signal, and for inputting second signal to each first pixel unit group in the second sequential, to each described
Second pixel unit group inputs the first signal.
In above-described embodiment, by the way that the multiple row pixel unit of display panel is divided into multiple first pixel unit groups and multiple
Second pixel unit group, by being inputted respectively to each first pixel unit group and each second pixel unit group respectively in different sequential
The first signal and the second signal, and coordinate scanning signal so that each pixel unit on display panel shows gridiron pattern picture, into
And realize and the ghost of display panel is tested, without to display panel installation driving chip, flexible PCB and polaroid
Equal elements, effectively prevent the waste of said elements so that production, testing cost effectively reduce.
In one embodiment, as described in Figure 1, a kind of organic light emitting display test device, including：100 He of test circuit
Display panel 200；The display panel 200 includes multiple pixel units 210, and each pixel unit is set in multiple lines and multiple rows arrangement
It sets, and it includes multiple first pixel unit groups and multiple second pixel unit groups respectively to arrange the pixel unit；The test circuit
Including at least one source signal line, at least one source signal line respectively with each first pixel unit group and each described
Second pixel unit group connects, and at least one source signal line is used for defeated to each first pixel unit group in the first sequential
Enter the first signal, second signal inputted to each second pixel unit group, and in the second sequential to each described first
Pixel unit group inputs second signal, and the first signal is inputted to each second pixel unit group.
Specifically, in Fig. 1 A.A. (Ative Area, effective display area domain) region be display panel viewing area, often
One pixel unit includes a pixel circuit and an organic luminescent device, each pixel circuit and an organic light emission
Device connects, and source signal line (VD1, VD2) is used to provide source signal (source signals) for pixel unit.It, will in the present embodiment
Each row pixel unit is divided into multiple first pixel unit groups and multiple second pixel unit groups, each multiple first pixel unit groups
Including adjacent multiple row pixel unit, each second pixel unit group includes adjacent multiple row pixel unit.And every one first pixel
Unit group is adjacent with one second pixel unit group, for example, being second pixel unit between each two the first pixel unit group
Group, for example, each first pixel unit group and each second pixel unit group are arranged in order setting, i.e., each first pixel list
Bamboo is arranged between tuple and each second pixel unit group plum blossom.
In the present embodiment, display test device further includes multiple scan lines, each scan line and pixel described in a line
Unit connects.Scan line is used to provide scanning signal for pixel unit.
In the present embodiment, the first signal is low level signal, and second signal is high level signal, and source signal voltage is lower,
Then the brightness of organic luminescent device is bigger, and source signal voltage is higher, then the brightness of organic luminescent device is smaller, in the first sequential
In, each first pixel unit group receives the first signal, and each second pixel unit group receives second signal so that display panel is adjacent
The brightness that shows of the first pixel unit group and the second pixel unit group it is different, for example, the first pixel unit group is displayed in white, the
Two pixel unit groups show black, and coordinate that scanning signal so that each row pixel circuit receives is source signal voltage and sweep
Retouch the pressure difference of signal so that the pixel circuit of adjacent multirow sends out the brightness different from other adjacent multirow pixel circuit
Light so that on display panel formed black and white grid chessboard picture.To realize that the ghost to display panel is tested.
It is noted that traditional display panel needs to pass through driving chip to show the gridiron pattern picture of black and white
To each pixel circuit input data signal and scanning signal, and then controls each region and show black or white respectively, if
The ghost test of display panel is obstructed out-of-date, and display panel is defective products, in this way, causing to install driving core on a display panel
The elements such as piece, flexible PCB and polaroid are waste product, to cause driving chip, flexible PCB and polaroid etc.
The waste of element.
In order to realize the input of signal, for example, organic light emitting display test device further includes signal input module, signal is defeated
Enter module to connect at least one source signal line and scan line, for example, signal input module is for providing scanning signal
And source signal.It is noted that the interface quickly connected can be arranged in the signal input module, the interface is described for connecting
At least one source signal line and scan line, in this way, the signal input module can be arranged independently of display panel, for example, should
Signal input module is test equipment, and the test equipment is for providing test signal, for example, the test signal includes scanning signal
And source signal, for example, the test signal further includes control signal, which is used to provide control letter to shift register
Number, register generates often capable scanning signal, for example, the signal input module also provides for power supply, for example, the signal inputs
Module also provides for the first power supply ELVDD and second source ELVSS, for example, signal input module setting first interface and the
Two interfaces, the first interface is for connecting at least one source signal line, and the second interface is for connecting scan line, institute
Signal input module is stated for providing source signal at least one source signal line by first interface, the signal inputs mould
Block is used to provide scanning signal to the scan line by second interface.
In order to preferably provide source signals for each first pixel unit group and each second pixel unit group, at one
In embodiment, referring again to Fig. 1, at least one source signal line includes the first source signal line VD1 and the second source signal line
VD2, the first source signal line VD1 are connect with each first pixel unit group, the second source signal line VD2 with it is each described
Second pixel unit group connects, and first source signal line is used in the first sequential to each first pixel unit group input the
One signal inputs second signal in the second sequential to each first pixel unit group, and second source signal line is used for the
One sequential inputs second signal to each second pixel unit group, is inputted to each second pixel unit group in the second sequential
First signal.
In the present embodiment, source signal line is two, including first source signal line and second source signal line, example
Such as, first source signal line is connect with each row pixel unit in each first pixel unit group, for example, described
Two source signal lines are connect with each row pixel unit in each second pixel unit group.Specifically, in the present embodiment, lead to
It crosses two source signal lines to connect with the first pixel unit group and the second pixel unit group respectively so that source signals can be distinguished
Be provided to the first pixel unit group respectively arranges the pixel unit and each row pixel unit of the second pixel unit group.
In the first sequential, the first source signal line inputs the first signal, the second source signal to each first pixel unit group
Line inputs second signal to each second pixel unit group so that it is displayed in white in the first pixel unit group mutually gone together,
Second pixel unit group shows black；In the second sequential, the first source signal line inputs second to each first pixel unit group
Signal, the second source signal line input the first signal to each second pixel unit group so that in the first pixel mutually gone together
Unit group shows black, and the second pixel unit group is displayed in white, and to realize the display of gridiron pattern picture, and then is realized aobvious
Show the ghost test of panel.
In order to control the voltage of source signals, in one embodiment, as shown in Figure 1, organic light emitting display test dress
It further includes multiple switch circuit to set, and each switching circuit is respectively provided with a switching tube 310, the control of each switching tube 310
For receiving Continuity signal, at least one source signal line passes through each switching circuit and each first pixel unit at end
Group and each second pixel unit group connection.
For example, each switching circuit is connect with a row pixel unit, for example, each switching circuit and each row pixel unit are one by one
It is correspondingly connected with, for example, at least one source signal line is connect by a switching circuit with a row pixel unit, for example, described
At least one source signal line by each row pixel unit in each switching circuit and each first pixel unit group and
Each row pixel unit connection in each second pixel unit group.For example, partial switch circuit and each first pixel list
Each row pixel unit in tuple connects one to one, for example, in partial switch circuit and each second pixel unit group
Each row pixel unit connects one to one.
In the present embodiment, switching circuit is used to control the voltage of source signals, is led when the control terminal of switching tube receives
When messenger SW (switch, switch), switching tube conducting so that switching circuit is connected, so that at least one source letter
Number line is realized and is connected with each first pixel unit group and each second pixel unit group so that source signals can
It is input to the first pixel unit group and each second pixel unit group.For example, the switching tube is TFT (Thin Film
Transistor, thin film transistor (TFT)).
For example, first source signal line is connected by each first switch circuit group and each first pixel unit group
It connecing, second source signal line is connect by each second switch circuit group with each second pixel unit group, and described
One source signal line is used to input the first signal to each first pixel unit group in the first sequential, in the second sequential to each described
First pixel unit group inputs second signal, and second source signal line is used in the first sequential to each second pixel unit
Group input second signal inputs the first signal in the second sequential to each second pixel unit group.
In the present embodiment, when Continuity signal SW is low level, each switching tube conducting.Incorporated by reference to Fig. 1 and Fig. 2, at first
Sequence (t1), the first source signal line VD1 provide V1 voltages, and the second source signal line VD2 provides V2 voltages, the first pixel unit group it is each
The source signal voltages that row pixel unit receives are V1 voltages, what each row pixel unit of the second pixel unit group received
Source signal voltages are V2 voltages.At the second sequential (t2), the first source signal line VD1 provides V2 voltages, the second source signal line
VD2 provides V1 voltages, and the source signal voltages that each row pixel unit of the first pixel unit group receives are V2 voltages, and second
The source signal voltages that each row pixel unit of pixel unit group receives be V1 voltages, hereafter cycle execute the first sequential and
Second sequential, so that the first pixel unit group and the second pixel unit group is displayed in white successively respectively and black.
In order to enable display panel pixel unit on each row can show black and white respectively in different sequential, in turn
Realize the display of gridiron pattern picture, in one embodiment, the time span of first sequential is a scan line pair one
The time span of the integral multiple of the output time of the scanning signal of the row pixel unit, second sequential is the scanning
Integral multiple of the line to the output time of the scanning signal of pixel unit described in a line.
In this way, each row pixel unit in the first pixel unit group and the second pixel unit group is when being scanned, it can
The pixel unit of integer row is scanned in the first sequential or the second sequential, so that display panel is in a column direction, it is adjacent
First pixel unit group and the second pixel unit group show black and white respectively, and multirow pixel unit with it is adjacent other
Multirow pixel unit can show black and white respectively, to realize the display of right gridiron pattern picture, and then realize
The ghost of display panel is tested.
Specifically, by taking the pixel circuit of 3T1C structures as an example, to being expanded on further in the present embodiment, in the present embodiment, such as
Shown in Fig. 3, each organic luminescent device is OLED (Organic Light-Emitting Diode, Organic Light Emitting Diode), often
One row pixel circuit is connect with a parasitic capacitance CP, and each pixel circuit includes the first transistor T1, second transistor T2, third
Transistor T3 and pixel capacitance C, source signal line are connect with the parasitic capacitance CP of each row pixel circuit, specifically, first crystal
The source electrode of pipe T1 connects source signal line source, and the drain electrode of the first transistor T1 is connect with VG nodes, the grid of the first transistor T1
Pole scan line SCAN corresponding with one's own profession pixel circuit<n>Connection.The source electrode of second transistor T2 and the first power supply ELVDD connect
It connects, the drain electrode of second transistor T2 is connect with the anode of OLED, and the grid of second transistor T2 is connect with VG nodes.Third crystal
The source electrode of pipe T3 is connect with VG nodes, and the drain electrode of third transistor T3 is connect with initialization power supply VINIT, third transistor T3's
Grid scan line SCAN corresponding with lastrow pixel circuit<n-1>Connection.The cathode of OLED is connect with second source ELVSS.
For being connect with the first power supply ELVDD, the other end of pixel capacitance C is connect with VG nodes for one end of pixel capacitance C.
When display panel works, incorporated by reference to Fig. 1 to Fig. 3, scanning signal is successively from the first row picture of display panel
For plain unit scan to last column pixel unit, the time for completing the scanning of the pixel unit of primary all rows is 1 frame time.It sweeps
Signal scanning is retouched to line n, source signals are written to the pixel circuit of line n.The T3 conductings of reseting stage third transistor,
Pixel capacitance C resets, and sweep phase the first transistor T1 conductings, source voltages are written to pixel capacitance C, source voltage value
Lower, OLED brightness is higher, and source voltage values are higher, and OLED brightness is lower.
In the present embodiment, V1 voltages are higher, and V2 voltages are relatively low, when 1 frame starts, the source of the first pixel unit group
Voltage is higher, and the source voltages of the second pixel unit group are relatively low, and therefore, the first pixel unit group, which corresponds to, shows black, and second
Pixel unit group correspondence is displayed in white.Source voltages to next stage, the first pixel unit group are relatively low, the second pixel unit
The source voltages of group are higher, and therefore, the first pixel unit group correspondence is displayed in white, and it is black that the second pixel unit group corresponds to display
Color.Above procedure is so repeated, after 1 frame, you can show complete gridiron pattern picture as shown in Figure 4.
In order to enable different source signals can be separately input into the first pixel unit group and the second pixel unit group,
The source signals for being input to the first pixel unit group and the second pixel unit group are controlled, in one embodiment
In, as shown in figure 5, each switching circuit includes multiple first switch circuit group SW1 and multiple second switch circuit group SW2,
Each first switch circuit group SW1 is connect with the first pixel unit group, each second switch circuit group SW2
It is connect with the second pixel unit group, at least one source signal line passes through each first switch circuit group and each institute
The connection of the first pixel unit group is stated, at least one source signal line passes through each second switch circuit group and each described second
Pixel unit group connects, and each first group of switch is connected, each described second group for receiving Continuity signal in the first sequential
Switch is connected for receiving Continuity signal in the second sequential.
For example, each switching circuit in each first switch circuit group and the row picture in the first pixel unit group
Plain unit connection, for example, each switching circuit in each second switch circuit group and one in the second pixel unit group
Row pixel unit connects, i.e., switching circuit and each row pixel list in the first pixel unit group of each first switch circuit group
Member connects one to one, the switching circuit of each second switch circuit group and each row pixel unit in the second pixel unit group
It connects one to one, for example, the control terminal of each switching circuit of first switch circuit group is for receiving same Continuity signal, second
The control terminal of each switching circuit of switching circuit group is for receiving same Continuity signal, in this way, in different sequential respectively to first
The switching circuit of switching circuit group and the switching circuit of second switch circuit group send Continuity signal respectively so that the first pixel
Unit group and the second pixel unit group receive source signals in different sequential, so that being input to the first pixel unit
The source signals of group and the second pixel unit group can be controlled.
In order to realize display panel colour picture test, it is in one embodiment, each described referring again to Fig. 5
Pixel unit includes multiple red pixel unit R, multiple green pixel cell G and multiple blue pixel unit B, each red pixel unit
R in multiple row be arranged, each green pixel cell G in multiple row be arranged, each indigo plant pixel unit B in multiple row setting, it is described at least
One source signal line includes feux rouges source signal line VDR, green light source signal line VRG and blue light source signal line VRB, the red light source letter
Number line VDR connect with each row red pixel unit, and the green light source signal line VRG arranges the green pixel cell and connect with each,
The blue light source signal line VRB is connect with each row blue pixel unit.
In the present embodiment, display panel 200 includes multiple red pixel unit R, multiple green pixel cell G and multiple blue pixels
Unit B, that is to say, that pixel unit is divided into red pixel unit, green pixel cell and blue pixel unit according to luminescent color, or
It says, pixel unit is divided into red pixel unit, green pixel cell and blue pixel unit, same color according to the luminescent color of its OLED
Pixel unit be same column setting, in this way, display panel includes the red pixel unit of multiple row, multiple row green pixel cell and multiple row indigo plant picture
Plain unit, and arranged adjacent is arranged successively for red pixel unit, green pixel cell and blue pixel unit, i.e. a row red pixel cell
It is adjacent successively with a row green pixel cell and a blue pixel unit of row, the red pixel unit of multiple row, multiple row green pixel cell and more
The blue pixel unit of row is arranged in order with this rule.The quantity of source signal line is three, respectively feux rouges source signal line, green light source letter
Number line and blue light source signal line, for example, feux rouges source signal line is used to input source signal, green light source signal to each red pixel unit of row
Line is used to input source signal to each row green pixel cell, and blue light source signal line is used to input source signal to the blue pixel unit of each row,
For example, feux rouges source signal line is used to input the first signal to each red pixel unit of row in the first sequential, for example, green light source signal line
For the first sequential to each row green pixel cell input the first signal, for example, blue light source signal line be used for the first sequential to
Each blue pixel unit of row inputs the first signal, for example, feux rouges source signal line is for defeated to each red pixel unit of row in the second sequential
Enter second signal, for example, green light source signal line is used to input second signal to each row green pixel cell in the second sequential, for example,
Blue light source signal line is used to input second signal to the blue pixel unit of each row in the second sequential.
In order to realize the light emitting control of each pixel unit to the first pixel unit group and the second pixel unit group, at one
In embodiment, each row red pixel unit arranges blue pixel unit phase successively with the row green pixel cell and one
Neighbour's setting.For example, each first pixel unit group includes the red pixel unit of multiple row, multiple row green pixel cell and multiple row indigo plant pixel
Unit, each second pixel unit group include the red pixel unit of multiple row, multiple row green pixel cell and multiple row indigo plant pixel unit.
For example, feux rouges source signal line is used for each row red pixel unit input the in the first sequential to the first pixel unit group
One signal, for example, green light source signal line is used to input the to each row green pixel cell of the first pixel unit group in the first sequential
One signal, for example, blue light source signal line is used to input the to each row indigo plant pixel unit of the first pixel unit group in the first sequential
One signal；For example, feux rouges source signal line is used for each row red pixel unit input the in the second sequential to the first pixel unit group
Binary signal, for example, green light source signal line is used to input the to each row green pixel cell of the first pixel unit group in the second sequential
Binary signal, for example, blue light source signal line is used to input the to each row indigo plant pixel unit of the first pixel unit group in the second sequential
Binary signal.
For example, feux rouges source signal line is used for each row red pixel unit input the in the first sequential to the second pixel unit group
Binary signal, for example, green light source signal line is used to input the to each row green pixel cell of the second pixel unit group in the first sequential
Binary signal, for example, blue light source signal line is used to input the to each row indigo plant pixel unit of the second pixel unit group in the first sequential
Binary signal；For example, feux rouges source signal line is used for each row red pixel unit input the in the second sequential to the second pixel unit group
One signal, for example, green light source signal line is used to input the to each row green pixel cell of the second pixel unit group in the second sequential
One signal, for example, blue light source signal line is used to input the to each row indigo plant pixel unit of the second pixel unit group in the second sequential
One signal.
In above-described embodiment, feux rouges source signal line, green light source signal line and blue light source signal line can be respectively when different
Sequence inputs source signals to the first pixel unit group and the second pixel unit group so that display panel can show single face
Color realizes the test of colour picture.
In order to realize that the source signal line of each color can be that the first pixel unit group and the second pixel unit group input respectively
Source signal, for example, multiple switch circuit and the first pixel unit group that the feux rouges source signal line passes through first switch circuit group
The red pixel unit connection of each row, the feux rouges source signal line passes through the multiple switch circuit of second switch circuit group and the
Each row red pixel unit connection of two pixel unit groups；For example, the green light source signal line passes through first switch circuit group
Multiple switch circuit connect with each row green pixel cell of the first pixel unit group, the green light source signal line passes through
The multiple switch circuit of two switching circuit groups is connect with each row green pixel cell of the second pixel unit group；For example, described
Blue light source signal line passes through the multiple switch circuit of first switch circuit group and each row of the first pixel unit group blue pixel
Unit connects, and the blue light source signal line is each by the multiple switch circuit of second switch circuit group and the second pixel unit group
Arrange the blue pixel unit connection.
In the present embodiment, by control first switch circuit group multiple switch circuit and second switch circuit group it is multiple
Switching circuit on and off so that the source signal line of each color can be respectively the first pixel unit group and the second pixel unit
Group input source signal.For example, in the first sequential, each switching circuit of first switch circuit group is connected, second switch circuit group
Multiple switch circuit ends, and feux rouges source signal line, green light source signal line and blue light source signal line are believed to display panel input first
Number, at this time, each row pixel unit of the first pixel unit group receives the first signal, each row pixel list of the second pixel unit group
Member does not receive the first signal；In the second sequential, each switching circuit of second switch circuit group is connected, first switch circuit group it is more
A switching circuit cut-off, feux rouges source signal line, green light source signal line and blue light source signal line input the first signal to display panel,
At this time, each row pixel unit of the second pixel unit group receives the first signal, each row pixel unit of the first pixel unit group
The first signal is not received.
Here is a specific embodiment：
In the present embodiment, as shown in figure 5, display panel 200 include multiple red pixel unit R, multiple green pixel cell G and
A.A. is the viewing area of display panel in multiple indigo plant pixel unit B, Fig. 5, and source signal line includes feux rouges source signal line VDR, green light
Source signal line VDG and blue light source signal line VDB, the multiple switch circuit that feux rouges source signal line passes through first switch circuit group SW1
It is connect with each row of the first pixel unit group red pixel unit, the feux rouges source signal line VDR passes through second switch circuit
The multiple switch circuit of group SW2 is connect with each row of the second pixel unit group red pixel unit, the green light source signal line
VDG is connected by the multiple switch circuit of first switch circuit group SW1 and each row of the first pixel unit group green pixel cell
It connects, the green light source signal line VDG is each by the multiple switch circuit of second switch circuit group SW2 and the second pixel unit group
Arrange the green pixel cell connection；The blue light source signal line VDB by the multiple switch circuit of first switch circuit group SW1 with
Each row blue pixel unit connection of first pixel unit group, the blue light source signal line VDB pass through second switch circuit group
The multiple switch circuit of SW2 is connect with each row of the second pixel unit group blue pixel unit.
The image element circuit structure of pixel unit in the present embodiment is given please also refer to Fig. 5 to Fig. 8 per a line referring to Fig. 3
Before scanning signal, first enables first switch circuit group SW1 successively and second switch circuit group SW2, data-signal are written to A.A.
Interior each parasitic capacitance Cp, in sweep phase, the first transistor T1 conductings of pixel circuit, data voltage writing pixel capacitance C.
A represents the sequential of Fig. 6 in Fig. 8, and B represents the sequential of Fig. 7.First stage (t1) is A sequential, at this time the first pixel list
Tuple correspondence is displayed in white, and the second pixel unit group, which corresponds to, shows black；Second stage (t2) is B sequential, at this time the first pixel
Unit group, which corresponds to, shows black, and the second pixel unit group correspondence is displayed in white.Above procedure is so repeated, after 1 frame, you can
Show complete gridiron pattern picture.It, can also be to CIE (Commission since RGB is individually controlled
Internationale de L'Eclairage, International Commission on Illumination) coloration is finely adjusted so that and test is better.
In addition, the present embodiment, which can also drive, lights full frame sprite.First switch circuit group SW1 and second switch electricity
Road group SW2 gives constant low level simultaneously, passes through feux rouges source signal line VDR, green light source signal line VDG and blue light source signal line VDB
Predeterminated voltage is inputted to display panel.
Ghost detection process：
Step 1：White picture is lighted, V2 voltages are adjusted so that display panel is displayed in white picture, and when white is drawn
When the white brightness in face reaches predetermined luminance, the voltage value of V2 is recorded.
Step 2：Grey screen is lighted, V3 voltages are adjusted so that display panel shows grey screen, and works as grisaille
When the grey colour brightness in face reaches predetermined luminance, the voltage value of V3 is recorded.
Step 3：It uses above-mentioned test circuit and driver' s timing that display panel is made to show gridiron pattern picture, continues several
Minutes.
Step 4：Grey screen is switched to, ghost recovery time is recorded.
In one embodiment, a kind of test circuit of organic light emitting display panel, including at least one source signal are provided
Line, at least one source signal line with multiple first pixel unit groups and multiple second pixel unit groups for connecting, institute
At least one source signal line is stated for inputting the first signal to each first pixel unit group in the first sequential, to each described the
Two pixel unit groups input second signal, and second signal, Xiang Gesuo are inputted to each first pixel unit group in the second sequential
It states the second pixel unit group and inputs the first signal.
In order to realize the input of signal, for example, a kind of test circuit of organic light emitting display panel further includes signal input
Module, signal input module are connect at least one source signal line and scan line, for example, signal input module is for carrying
For scanning signal and source signal.It is noted that the interface quickly connected can be arranged in the signal input module, which uses
In connecting at least one source signal line and scan line, in this way, the signal input module can be set independently of display panel
It sets, for example, the signal input module is test equipment, the test equipment is for providing test signal, for example, the test signal packet
Scanning signal and source signal are included, for example, the test signal further includes control signal, the control signal to shift register for carrying
For controlling signal, register generates often capable scanning signal, for example, the signal input module also provides for power supply, for example, should
Signal input module also provides for the first power supply ELVDD and second source ELVSS, for example, signal input module setting first
Interface and second interface, the first interface is for connecting at least one source signal line, and the second interface is for connecting
Scan line, the signal input module is used to provide source signal at least one source signal line by first interface, described
Signal input module is used to provide scanning signal to the scan line by second interface.
The test circuit of organic light emitting display panel in the present embodiment can be applied to organic in any of the above-described embodiment
Luminescence display test device.
Each technical characteristic of embodiment described above can be combined arbitrarily, to keep description succinct, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, it is all considered to be the range of this specification record.
Several embodiments of the invention above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection of the present invention
Range.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (10)
1. a kind of organic light emitting display test device, which is characterized in that including：Test circuit and display panel；
The display panel includes multiple pixel units, and each pixel unit is arranged in multiple lines and multiple rows, and described in each row
Pixel unit includes multiple first pixel unit groups and multiple second pixel unit groups；
The test circuit includes at least one source signal line, at least one source signal line respectively with each first pixel
Unit group and the connection of each second pixel unit group, at least one source signal line are used in the first sequential to each described
First pixel unit group inputs the first signal, inputs second signal to each second pixel unit group, and for second
Sequential inputs second signal to each first pixel unit group, and the first signal is inputted to each second pixel unit group.
2. organic light emitting display test device according to claim 1, which is characterized in that at least one source signal line
Including the first source signal line and the second source signal line, first source signal line is connect with each first pixel unit group, institute
It states the second source signal line to connect with each second pixel unit group, first source signal line is used in the first sequential to each institute
It states the first pixel unit group and inputs the first signal, second signal, institute are inputted to each first pixel unit group in the second sequential
The second source signal line is stated for inputting second signal to each second pixel unit group in the first sequential, in the second sequential to each
The second pixel unit group inputs the first signal.
3. organic light emitting display test device according to claim 1, which is characterized in that further include multiple switch circuit,
Each switching circuit is respectively provided with a switching tube, the control terminal of each switching tube for receiving Continuity signal, it is described at least
One source signal line passes through each switching circuit and each first pixel unit group and each second pixel unit group
Connection.
4. organic light emitting display test device according to claim 3, which is characterized in that each switching circuit includes more
A first switch circuit group and multiple second switch circuit groups, each first switch circuit group and the first pixel list
Tuple connects, and each second switch circuit group is connect with the second pixel unit group, at least one source signal
Line is connect by each first switch circuit group with each first pixel unit group, and at least one source signal line passes through
Each second switch circuit group is connect with each second pixel unit group, and each first group of switch is in the first sequential
It receives Continuity signal and is connected, each second group of switch is connected for receiving Continuity signal in the second sequential.
5. organic light emitting display test device according to claim 4, which is characterized in that each pixel unit includes more
A red pixel unit, multiple green pixel cells and multiple blue pixel units, each red pixel unit are arranged in multiple row, each described
Green pixel cell is arranged in multiple row, and each blue pixel unit is arranged in multiple row, and at least one source signal line includes feux rouges
Source signal line, green light source signal line and blue light source signal line, the feux rouges source signal line are connect with each row red pixel unit,
The green light source signal line is connect with each row green pixel cell, the blue light source signal line and each row blue pixel unit
Connection.
6. organic light emitting display test device according to claim 5, which is characterized in that each row red pixel unit
It is disposed adjacent successively with the row green pixel cell and a row blue pixel unit.
7. organic light emitting display test device according to claim 6, which is characterized in that each first pixel unit group
Including the red pixel unit of multiple row, multiple row green pixel cell and multiple row indigo plant pixel unit, each second pixel unit group includes more
Arrange red pixel unit, multiple row green pixel cell and multiple row indigo plant pixel unit.
8. organic light emitting display test device according to claim 1, which is characterized in that further include multiple scan lines, often
One scan line is connect with pixel unit described in a line.
9. organic light emitting display test device according to claim 8, which is characterized in that the time of first sequential is long
Degree is integral multiple of the scan line to the output time of the scanning signal of pixel unit described in a line, second sequential
Time span is integral multiple of the scan line to the output time of the scanning signal of pixel unit described in a line.
10. a kind of test circuit of organic light emitting display panel, which is characterized in that including at least one source signal line, it is described extremely
A few source signal line is described at least one for being connect with multiple first pixel unit groups and multiple second pixel unit groups
Source signal line is used to input the first signal to each first pixel unit group in the first sequential, to each second pixel unit
Group input second signal inputs second signal, to each second pixel in the second sequential to each first pixel unit group
Unit group inputs the first signal.
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| CN201810259887.4A CN108399879A (en) | 2018-03-27 | 2018-03-27 | The test circuit of organic light emitting display test device and organic light emitting display panel |
| PCT/CN2018/117584 WO2019184409A1 (en) | 2018-03-27 | 2018-11-27 | Organic light emitting display test device and test circuit for organic light emitting display panel |
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| CN201810259887.4A CN108399879A (en) | 2018-03-27 | 2018-03-27 | The test circuit of organic light emitting display test device and organic light emitting display panel |
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