WO2020087836A1 - 显示装置及其调节方法 - Google Patents

显示装置及其调节方法 Download PDF

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Publication number
WO2020087836A1
WO2020087836A1 PCT/CN2019/078081 CN2019078081W WO2020087836A1 WO 2020087836 A1 WO2020087836 A1 WO 2020087836A1 CN 2019078081 W CN2019078081 W CN 2019078081W WO 2020087836 A1 WO2020087836 A1 WO 2020087836A1
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WIPO (PCT)
Prior art keywords
connection line
resistance
fan
display
out area
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PCT/CN2019/078081
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English (en)
French (fr)
Inventor
邱彬
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惠科股份有限公司
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Priority to US17/043,594 priority Critical patent/US11056072B2/en
Publication of WO2020087836A1 publication Critical patent/WO2020087836A1/zh

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    • 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
    • G09G3/34—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 by control of light from an independent source
    • G09G3/36—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 by control of light from an independent source using liquid crystals
    • G09G3/3611—Control of matrices with row and column drivers
    • G09G3/3685—Details of drivers for data electrodes
    • G09G3/3688—Details of drivers for data electrodes suitable for active matrices only
    • 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
    • G—PHYSICS
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    • 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
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    • G—PHYSICS
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    • 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]
    • G09G3/3266—Details of drivers for scan electrodes
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    • 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]
    • G09G3/3275—Details of drivers for data electrodes
    • G—PHYSICS
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    • 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
    • G09G3/34—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 by control of light from an independent source
    • G09G3/36—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 by control of light from an independent source using liquid crystals
    • G09G3/3611—Control of matrices with row and column drivers
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    • G09G3/3677—Details of drivers for scan electrodes suitable for active matrices only
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    • 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
    • G09G3/34—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 by control of light from an independent source
    • G09G3/36—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 by control of light from an independent source using liquid crystals
    • G09G3/3611—Control of matrices with row and column drivers
    • G09G3/3685—Details of drivers for data electrodes

Definitions

  • the present application relates to the field of display technology, in particular to a display device and its adjustment method.
  • the general display principle of an exemplary display device is to control each pixel to be turned on or off line by line through gate lines and data lines on a TFT (Thin Film Transistor, Thin Film Transistor) substrate to achieve the display of an ideal image.
  • the gate driving signal and the data signal that control the pixel to be turned on or off are sent from the control chip in the display device, and the gate driving signal and the data signal are usually transmitted to the TFT by using COF (Chip On Film).
  • An exemplary processing method is a fan-out layout.
  • the so-called fan-out layout is that a part of the wires connecting the gate lines and the data lines are fan-shaped overall, and the wires located on both sides of the fan-out area in the fan-out layout
  • the length will be much longer than the wire located in the middle of the fan-out area, so the resistance of the wires on both sides is much larger than the resistance of the middle wire, which causes the waveform of the gate drive signal or data signal to be severely distorted during the transmission of the wires on both sides, resulting in color shift
  • the pixels controlled by the wires on both sides of the fan-out area appear as bright spots or dark spots (fan-outmura), which affects the display effect of the display device.
  • a display device that can improve the appearance of bright spots or dark spots in the final display due to the different wire lengths in the fan-out area.
  • a display device includes a display panel and a driving circuit, the display panel includes a display area and a fan-out area, a plurality of data lines are provided in the display area, and a plurality of connections are provided in the fan-out area Line; where each data line is connected to a connection line;
  • the driving circuit includes:
  • a detection circuit configured to detect the resistance of the connection line;
  • the connection line includes a first connection line and a second connection line;
  • a plurality of source drive circuits the source drive circuit has an adjustable resistance integrated therein, and the display panel is electrically connected to the adjustable resistance of the source drive circuit via the connection line;
  • control chip the control chip is electrically connected to a plurality of the source driving circuits through function pins respectively, the control chip is set to compare the resistance of the first connection line and the second connection line, and according to the Output control signal according to the comparison result;
  • the source driving circuit receives the control signal, and adjusts the resistance of the adjustable resistor according to the control signal, so that the resistance of the first connection line and the second connection line in the fan-out area the same.
  • the number of the adjustable resistors corresponds to the number of the connecting wires one-to-one.
  • the display device further includes a brightness sensor provided in the fan-out area and configured to detect the display brightness in the fan-out area;
  • the control chip outputs a control signal according to the resistance comparison result, and outputs a control signal according to the resistance comparison result and the display brightness;
  • the source driving circuit is further configured to receive the control signal and adjust the resistance of the adjustable resistor according to the control signal so that the first connection line and the second connection line are in the fan-out area The resistance is the same.
  • the display device further includes a flip-chip film disposed on the edge of the fan-out area, and the source driving circuit is disposed on the flip-chip film.
  • the adjustable resistance is a digital potentiometer
  • a digital potential control circuit is integrated in the source driving circuit
  • the digital potential control circuit is configured to adjust the resistance of the digital potentiometer
  • control chip is a timing controller.
  • the display panel is a liquid crystal display panel.
  • the display panel is an organic light-emitting display panel.
  • the display panel is a quantum dot light-emitting display panel.
  • a plurality of sets of resistance values output to the adjustable resistor are pre-stored in the digital potential control circuit.
  • a method for adjusting a display device is based on a display device.
  • the display device includes a display panel and a drive circuit.
  • the display panel includes a display area and a fan-out area. Multiple data lines are provided in the display area
  • the fan-out area is provided with multiple connection lines; wherein each data line is correspondingly connected to a connection line;
  • the drive circuit includes:
  • a detection circuit configured to detect the resistance of the connection line
  • a plurality of source drive circuits the source drive circuit has an adjustable resistance integrated therein, and the display panel is electrically connected to the adjustable resistance of the source drive circuit via the connection line;
  • control chip the control chip is electrically connected to a plurality of the source driving circuits through functional pins, respectively;
  • the adjustment method includes:
  • the connecting line includes a first connecting line and a second connecting line
  • the resistance value of the adjustable resistor is adjusted according to the resistance value comparison result, so that the first connection line and the second connection line have the same resistance value in the fan-out area.
  • the step of detecting the resistance of the connecting line in the fan-out area includes:
  • the calculation formula of the resistance value of the trace is:
  • ⁇ is the resistivity of the connection line, which is determined by the nature of the connection line itself, L is the length of the connection line, and S is the cross-sectional area of the connection line.
  • the step of detecting the resistance of the connecting line in the fan-out area includes:
  • the resistance values of the first connection line and the second connection line are determined according to the detected first voltage and the second voltage.
  • the step of adjusting the resistance of the adjustable resistor according to the comparison result includes:
  • the resistance value of the adjustable resistor connected to the second connection line is controlled to increase
  • the resistance value of the first connection line is equal to the resistance value of the second connection line, the resistance value of the adjustable resistance is not changed;
  • the resistance value of the first connection line is less than the resistance value of the second connection line, the resistance value of the adjustable resistor connected to the first connection line is increased.
  • the adjustment method of the display device further includes:
  • the adjustment method of the display device further includes:
  • the adjustment method of the display device further includes:
  • the step of adjusting the resistance of the adjustable resistor according to the resistance comparison result so that the first connection line and the second connection line have the same resistance value in the fan-out area is based on the
  • the resistance comparison result and the brightness comparison result adjust the resistance of the adjustable resistor so that the resistance of the first data line and the second data line in the fan-out area is the same.
  • the preset display brightness reference is the display brightness normally displayed in the display area.
  • a method for adjusting a display device including:
  • the connecting line includes a first connecting line and a second connecting line
  • the resistance value of the adjustable resistor is adjusted according to the brightness comparison result, so that the first connection line and the second connection line have the same resistance value in the fan-out area.
  • the above display device and its adjusting method detect and compare the resistance of the wiring in the fan-out area, and adjust the resistance of the adjustable resistor according to the comparison result, so that the resistance of the connecting wire in the fan-out area is the same, and then reduce Due to the difference in impedance caused by the different lengths of the connection lines, the difference in the transmission time delay of the gate drive signal or data signal in the wiring of the fan-out area is further reduced, which can effectively avoid bright spots or dark spots and color shift phenomena, and The final display effect of the display panel is more uniform.
  • FIG. 1 is a schematic structural diagram of a display device in an embodiment
  • FIG. 2 is a schematic diagram of the pixel arrangement of the display area 110 in FIG. 1;
  • FIG. 3 is a schematic structural diagram of a display device in another embodiment
  • FIG. 4 is a schematic flowchart of a method for adjusting a display device in an embodiment
  • FIG. 5 is a schematic flowchart of step S100 in FIG. 4;
  • FIG. 6 is a specific flowchart of step S300 in FIG. 4;
  • FIG. 7 is a schematic flowchart of a method for adjusting a display device in another embodiment
  • FIG. 8 is a schematic flowchart of a method for adjusting a display device in still another embodiment.
  • the display device 10 may include a display panel 100 and a driving circuit 200.
  • the display panel 100 includes a display area 110 and a fan-out area 120.
  • the display area 110 is an area where image information is displayed, and may also be referred to as a display area (active area); the fan-out area 120 is related to the display area 110.
  • a part of the wires connected by the gate line and the data line is fan-shaped as a whole.
  • the area where this part of the wire is located is called a fan-out area 120 or a fan-out area.
  • the display panel may be, for example, a TFT-LCD (Thin Film Transistor Liquid Crystal Display) display panel, an OLED (Organic Light-Emitting Diode) display panel, a QLED (Quantum Dot Light Emitting Diodes, quantum dot light emission) Diode) display panel, curved display panel or other display panel.
  • TFT-LCD Thi Film Transistor Liquid Crystal Display
  • OLED Organic Light-Emitting Diode
  • QLED Quantum Dot Light Emitting Diodes, quantum dot light emission
  • This application takes the display panel as a TFT-LCD display panel as an example for description.
  • the main driving principle of TFT-LCD the system board connects the R / G / B compressed signal, control signal and power supply to the connector of the PCB (Printed Circuit Board) through the leads.
  • PCB Print Circuit Board
  • Multiple data lines 111 are provided in the display area 110. As can be seen from FIG. 1, in the display area 110, the lengths of the data lines 111 are the same; in the fan-out area 120, multiple connection lines 121 are provided, each The data line 111 and a connection line 121 are connected to each other.
  • the driving circuit 200 may include a detection circuit (not labeled in FIG. 1), a source driving circuit 210 and a control chip 220.
  • a detection circuit not labeled in FIG. 1
  • the processing method is a fan-out layout.
  • the output wire is also the connecting wire 121 in this application.
  • connection line 121 In the fan-out area 120, the length of each connection line 121 is different.
  • the connection line 121 at the center of the fan-out area 120 has the shortest trace, and the length of the connection line 121 extending from the center to both sides increases sequentially; in the display area 110, the length of each data line 111 is the same. Therefore, the distance from the source driving circuit 210 to the connection lines 121 of the display area 110 is not the same, resulting in the impedance of the connection lines 121 in the fan-out area 120 not being able to agree, which in turn causes bright spots or dark spots to affect the user Viewing experience.
  • the connection line 121 is subdivided into a first connection line (not shown in FIG. 1) and a second connection line (not shown in FIG. 1).
  • the length of the first connection line is shorter than that of the second connection line.
  • the impedance of the second connection line is greater than the impedance of the first connection line.
  • the length of the first connection line may also be equal to the length of the second connection line, or the length of the first connection line is longer than the length of the second connection line.
  • the display area 110 is also provided with a plurality of gate lines and a plurality of gate drive circuits configured to drive the gate lines.
  • the gate drive circuit generates a gate signal based on a clock signal, which is also a gate line drive voltage signal , Its function is to control the writing of color data by controlling the switch of the thin film transistor, and then drive the display panel to display.
  • the figure is a schematic diagram of the pixel arrangement manner of the display area 110 in FIG. 1.
  • the pixel unit of the display panel 100 includes three sub-pixels having three different colors of red, green, and blue, and each pixel unit is provided with one data line and three gate lines. Further, each sub-pixel is driven by a corresponding gate line; each pixel unit is driven by a corresponding data line.
  • the pixel unit P1 is provided with a data line Data1 and gate lines Gate1, Gate2, and Gate3.
  • the data line Data1 is set to input color data information;
  • the gate lines Gate1, Gate2 and Gate3 are set to control the TFT (blue), green (G) and red (R) sub-pixels of the pixel unit respectively Thin Film Transistor Liquid Crystal Display (thin film transistor) switch, which in turn controls the writing of color data information.
  • the longer data lines have too large an impedance, resulting in insufficient writing of certain colors, so the screen display appears Color difference.
  • the detection circuit is configured to detect the resistance of the first connection line and the second connection line.
  • the detection circuit may detect the first connection by detecting the magnitude of the voltage of the first connection line and the second connection line
  • the resistance value of the line and the second connection line can be calculated by using existing software to simulate the resistance value.
  • the resistance value extraction software can be used to simulate the measurement; or by measuring the first connection line, The size of the resistance value is measured by the length of the second connection line, which can be expressed as:
  • ⁇ is the resistivity of the connection line, which is determined by the nature of the connection line itself, L is the length of the connection line, and S is the cross-sectional area of the connection line.
  • the source driving circuit 210 is configured to receive the clock signal output by the control chip 220, and then generate a strobe signal based on the clock signal.
  • the strobe signal is a signal set to drive the corresponding data line on or off.
  • an adjustable resistor 211 is integrated inside the source driving circuit 210, and the display panel 100 is electrically connected to the adjustable resistor 211 inside the source driving circuit 210 via a connection line 121.
  • the control chip 220 is electrically connected to the plurality of source driving circuits 210 through function pins and connection leads 221 respectively.
  • the control chip 220 is configured to compare the resistance of the first connection line and the second connection line, and output a control signal according to the resistance comparison result .
  • the control chip 220 may be a timing controller (Time-Controller, T-CON).
  • the timing controller is mainly configured to provide a clock signal for the data line 111 and the gate line of the display area 110.
  • the control chip 220 It is also set to compare the resistance value of the first connection line and the second connection line, that is, the resistance difference between the first connection line and the second connection line, and output a control signal according to the resistance comparison result (resistance difference).
  • the function pin and the connecting lead 221 are transmitted to the source driving circuit 210.
  • the source driving circuit 210 adjusts the resistance of the adjustable resistor 211 so that the resistance of the first connection line and the second connection line in the fan-out area the same.
  • the resistance value of the wiring in the fan-out area is detected and compared, and the resistance value of the adjustable resistor is adjusted according to the comparison result, so that the resistance value of the connecting wire in the fan-out area is the same, thereby reducing the number of Impedance differences caused by different lengths further reduce the difference in the transmission time delay of the gate drive signal or data signal in the traces of the fan-out area, which can effectively avoid bright spots or dark spots and color shift phenomena, thereby making the display panel final The display effect is more uniform.
  • the adjustable resistor 211 may be a digital potentiometer.
  • the source driving circuit 210 integrates a digital potential control circuit 212 set to adjust the resistance of the digital potentiometer.
  • the digital potentiometer is a relatively accurate adjustable resistor.
  • the digital potential control circuit 212 which controls the digital potentiometer at the same time is also a relatively simple control method.
  • the number of adjustable resistors 211 corresponds to the number of connecting wires 121, in other words, this application configures a separate adjustable resistor 211 for each wire in the fan-out area 120, which can be done
  • the impedance to each connection line is adjustable, thereby increasing the flexibility of this application.
  • the number of adjustable resistors 211 to be configured is also very large, which makes the adjustment more complicated. Therefore, in this embodiment, several The relationship between the length of the connection line 121 of the fan-out area 120 and the resistance value of the adjustable resistor in the display panel of the model (such as a large, medium, small panel, or a typical size display panel) is preset for the adjustable resistor Several groups of resistance values, so that when subsequent adjustments are required, only the corresponding control circuit 212 needs to directly select among several groups of adjustable resistance values according to the preset model, and then make changes. Therefore, the complexity of adjustment is reduced, and the solution of the present application is more flexible.
  • the display device 10 may include a display panel 100, a driving circuit 200, and a brightness sensor 300.
  • the display panel 100 includes a display area 110 and a fan-out area 120.
  • the display area 110 is an area where image information is displayed, and may also be referred to as a display area (active area); the fan-out area 120 is related to the display area 110.
  • a part of the wires connected by the gate line and the data line is fan-shaped as a whole.
  • the area where this part of the wire is located is called a fan-out area 120 or a fan-out area.
  • the display panel may be, for example, a TFT-LCD (Thin Film Transistor Liquid Crystal Display) display panel, an OLED (Organic Light-Emitting Diode) display panel, a QLED (Quantum Dot Light Emitting Diodes, quantum dot light emission) Diode) display panel, curved display panel or other display panel.
  • TFT-LCD Thi Film Transistor Liquid Crystal Display
  • OLED Organic Light-Emitting Diode
  • QLED Quantum Dot Light Emitting Diodes, quantum dot light emission
  • This application takes the display panel as a TFT-LCD display panel as an example for description.
  • the main driving principle of TFT-LCD the system motherboard connects the R / G / B compressed signal, control signal and power supply to the connector of the PCB (Printed Circuit Board, flexible circuit board) through the leads.
  • PCB Print Circuit Board, flexible circuit board
  • the display device 10 further includes a brightness sensor 300 disposed in the fan-out area 120 and configured to detect the display brightness of the fan-out area 120.
  • the length of each connection line 121 is inconsistent, resulting in the impedance of each connection line 121 in the fan-out area 120 being unable to agree, and then the phenomenon of bright spots or dark spots appears, so the fan-out area 120 appears bright
  • the display brightness in this area will be different from the display brightness in the display area 110.
  • the display brightness value normally displayed in the display area 110 is a preset value, which is an ideal screen display effect.
  • the control signal output by the control chip 220 according to the resistance comparison result may be a control signal output according to the resistance comparison result and display brightness.
  • the control signal output by the control chip 220 to the source driving circuit 210 may be a control signal output after combining the resistance comparison result and the display brightness.
  • just adjusting the resistance value of the variable resistor 211 according to the resistance value of the fan-out region 120 measured by simulation may still have a certain difference from the actual resistance value, so in order to further reduce the difference, this application
  • the fan-out area 120 is provided with a brightness sensor 300 to detect the display brightness of the fan-out area 120.
  • the display brightness value detected in real time is compared with the preset display brightness, and then the control chip 220 gives control according to the resistance comparison result and the display brightness
  • the source driving circuit 210 controls the internal digital potential control circuit to adjust the resistance of the adjustable resistor, so that the impedance of each connection line of the fan-out area 120 is the same, thereby making the display panel display more uniform.
  • a chip on film 240 is also provided at the edge of the fan-out area 120, and the source driving circuit 210 is disposed on the chip on film 240.
  • the gate drive circuit can also be electrically connected to the display panel through a flip-chip film.
  • the gate drive circuit of the present application adopts GOA technology, namely (Gate driver on Array, gate drive integration on array substrate), which is to integrate the gate drive circuit on the array substrate of the display panel, Therefore, the gate driving integrated circuit part can be omitted, so as to reduce the product cost in terms of material cost and manufacturing process.
  • the resistance of the wiring in the fan-out area is detected and compared, and then the display brightness of the fan-out area is detected, and the resistance of the adjustable resistor is adjusted according to the resistance comparison result and the display brightness, so that the connection line is in The resistance of the fan-out area is the same, thereby reducing the impedance difference caused by the different length of the connection line, and further reducing the difference in the propagation time delay of the gate drive signal or data signal in the trace of the fan-out area, which can effectively avoid the bright Speckle or dark spots and color shift phenomenon, which in turn makes the final display effect of the display panel more uniform.
  • FIG. 4 is a schematic flowchart of an adjustment method of a display device in an embodiment.
  • the adjustment method is based on the display device described in the foregoing embodiment, and the adjustment method may include steps: S100-S300.
  • connection line may include a first connection line and a second connection line.
  • the output wire in the fan-out layout is also the connecting line 121 in this application.
  • the length of each connection line 121 is different.
  • the connection line 121 at the center of the fan-out area 120 has the shortest trace, and the length of the connection line 121 extending from the center to both sides increases sequentially; in the display area 110, the length of each data line 111 is the same.
  • connection line 121 is subdivided into a first connection line (not shown in FIG. 1) and a second connection line (not shown in FIG. 1).
  • the length of the first connection line is shorter than that of the second connection line.
  • the impedance of the second connection line is greater than the impedance of the first connection line.
  • the length of the first connection line may also be equal to the length of the second connection line, or the length of the first connection line is longer than the length of the second connection line.
  • the step 100 may include steps S110-S120.
  • Step S110 measuring the length of the first connection line and the second connection line in the fan-out area
  • Step S120 Calculate the trace resistance according to the trace length.
  • the resistance of the first connection line and the second connection line can be measured by the following formula:
  • ⁇ is the resistivity of the connection line, which is determined by the nature of the connection line itself, L is the length of the connection line, and S is the cross-sectional area of the connection line.
  • connecting lines are also provided in the fan-out area 120, and only two of the connecting lines are described here as examples, which should not be understood as a further limitation to the present application.
  • step S200 the resistance values of the first connection line and the second connection line are compared.
  • the resistance value of the first connection line and the second connection line can be compared through the control chip 220 in the display device 10.
  • the control chip 220 may directly compare the resistance values, or may detect the magnitude of the voltage input to the first connection line and the second connection line to compare the resistance values of the first connection line and the second connection line.
  • Step S300 Adjust the resistance of the adjustable resistor according to the resistance comparison result, so that the resistance of the first connection line and the second connection line in the fan-out area is the same.
  • step S300 may include steps S310-S330.
  • step S310 if the resistance value of the first connection line is greater than the resistance value of the second connection line, the resistance value of the adjustable resistor connected to the second connection line is controlled to increase.
  • the resistance of the adjustable resistor connected to the second connection line is controlled to increase.
  • This is mainly the control signal output by the control chip 220 according to the comparison result.
  • the source driving circuit controls the internal digital potential control circuit to adjust the resistance of the corresponding adjustable resistor.
  • the second connection line is a line portion of the central area of the fan-out area 120
  • the first connection line is a line portion of the fan-out area 120 near both ends.
  • the result of its detection and comparison must be that the impedance of the first connection line (longer) is greater than the impedance of the second connection line (shorter). At this time, it is only necessary to control the resistance of the adjustable resistor connected to the second connection line Increase to the same resistance as the first connection line. Similarly, other connection lines can also increase the resistance in this way. Since there are many wires in the fan-out area 120, the number of adjustable resistors 211 to be configured is also very large, which makes the adjustment more complicated.
  • a uniform resistance value can also be set for the connection line.
  • the uniform resistance value can be set by referring to the resistance value of the longest wire length in the fan-out area 120, so that subsequent adjustments only need to be made according to the set resistance value That's it.
  • Step S320 if the resistance value of the first connection line is equal to the resistance value of the second connection line, the resistance value of the adjustable resistance is not changed.
  • the resistance value of the adjustable resistance is not changed.
  • Step S330 if the resistance value of the first connection line is less than the resistance value of the second connection line, the resistance value of the adjustable resistor connected to the first connection line is controlled to increase.
  • step S310 for the method of detecting, comparing, and adjusting the resistance value of the first connection line and the second connection line, reference may be made to the relevant description of step S310. The difference is that this step is that the resistance value of the first connection line is less than the second The resistance value of the connection line needs to increase the resistance value of the adjustable resistor connected to the first connection line. I will not repeat them here.
  • the resistance value of the connecting line in the fan-out area is detected and compared, and the resistance value of the adjustable resistor corresponding to the connecting line with the smaller resistance value is adjusted according to the comparison result, so that the connecting line is in the fan-out area.
  • the same resistance value thereby reducing the difference in impedance caused by the different length of the connection line, further reducing the difference in the propagation time delay of the gate drive signal or data signal in the trace of the fan-out area, which can effectively avoid bright spots or dark spots And the color shift phenomenon, which in turn makes the final display effect of the display panel more uniform.
  • FIG. 7 is a schematic flowchart of an adjustment method of a display device in another embodiment.
  • the adjustment method may include steps: S400-S600.
  • Step S400 Detect the display brightness of the fan-out area.
  • step S500 the display brightness is compared with a preset display brightness reference, and the brightness comparison result is output.
  • the length of each connection line 121 is inconsistent, resulting in the impedance of each connection line 121 in the fan-out area 120 being unable to agree, and then the phenomenon of bright spots or dark spots appears, so in the fan-out area
  • the display brightness in this area will be different from the display brightness in the display area 110.
  • the display brightness value normally displayed in the display area 110 is used as a preset display brightness reference, which is an ideal screen display effect.
  • the control chip 220 compares the display brightness of the fan-out area 120 and outputs a corresponding brightness comparison result.
  • Step S600 Adjust the resistance of the adjustable resistor according to the resistance comparison result so that the first connection line and the second connection line have the same resistance value in the fan-out area.
  • the step is to adjust the adjustment according to the resistance comparison result and the brightness comparison result
  • the resistance of the resistor makes the resistance of the first data line and the second data line in the fan-out area the same.
  • the source driving circuit 210 adjusting the resistance of the adjustable resistor according to the resistance comparison result may be an adjustment made after combining the resistance comparison result and the display brightness.
  • the fan-out area 120 is provided with a brightness sensor 300 to detect the display brightness of the fan-out area 120.
  • the display brightness value detected in real time is compared with the preset display brightness, and then the control chip 220 gives control according to the resistance comparison result and display brightness
  • the source driving circuit 210 controls the internal digital potential control circuit to adjust the resistance of the adjustable resistor, so that the impedance of each connection line of the fan-out area 120 is the same, thereby making the display panel display more uniform.
  • the resistance of the wiring in the fan-out area is detected and compared, and then the display brightness of the fan-out area is detected, and the resistance of the adjustable resistor is adjusted according to the resistance comparison result and the display brightness, so that the connection line is in The resistance of the fan-out area is the same, thereby reducing the impedance difference caused by the different length of the connection line, and further reducing the difference in the propagation time delay of the gate drive signal or data signal in the trace of the fan-out area, which can effectively avoid the bright Speckle or dark spots and color shift phenomenon, which in turn makes the final display effect of the display panel more uniform.
  • the adjustment method may include steps: S10-S60.
  • step S10 the resistance value of the connecting line in the fan-out area is detected.
  • the connecting line includes a first connecting line and a second connecting line.
  • step S20 the resistance values of the first connection line and the second connection line are compared.
  • Step S30 Adjust the resistance of the adjustable resistor according to the resistance comparison result, so that the resistance of the first connection line and the second connection line in the fan-out area is the same.
  • Step S40 Detect the display brightness of the fan-out area after the resistance adjustment.
  • step S50 the display brightness is compared with a preset display brightness reference, and the brightness comparison result is output.
  • Step S60 Adjust the resistance value of the adjustable resistor according to the brightness comparison result, so that the resistance value of the first connection line and the second connection line in the fan-out area is the same.
  • steps S10-S30 reference may be made to the related description of steps S100-S300 in the foregoing adjustment method, and no further details are provided here. Further, for the brightness detection, comparison, and adjustment of the adjustable resistance appearing in steps S40-S60, reference may also be made to the related description of the foregoing embodiment.
  • the resistance of the adjustable resistor is adjusted according to the resistance first, and then the display brightness of the fan-out area is detected after the adjustment of the resistance of the adjustable resistor, and then the The detected display brightness is compared with a preset display brightness reference, and the resistance of the adjustable resistor is dynamically adjusted according to the comparison result, so that the resistance of the first connection line and the second connection line in the fan-out area is the same.
  • the display brightness of the fan-out area is detected after the resistance value is adjusted, and the detection
  • the display brightness is compared with the preset display brightness reference, and the resistance of the adjustable resistor is dynamically adjusted according to the comparison result, so that the resistance of the connection line in the fan-out area is the same, thereby reducing the difference due to the length of the connection line.
  • the impedance difference further reduces the difference in the transmission time delay of the gate drive signal or data signal in the fan-out area traces, which can effectively avoid bright spots or dark spots and color shift, thereby making the final display panel display more uniform .

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Abstract

一种显示装置及其调节方法，该显示装置(10)包括显示面板(100)和驱动电路(200)，显示面板(100)包括显示区域(110)和扇出区域(120)，显示区域(110)中设置有多条数据线，扇出区域(120)设置有多条连接线；驱动电路(200)包括：检测电路，设置为检测连接线的阻值；连接线(121)包括第一连接线和第二连接线；多个源驱动电路(210)，源驱动电路(210)内部集成有可调电阻(211)；控制芯片(220)比较第一连接线和第二连接线的阻值、并输出控制信号；源驱动电路(210)根据控制信号调整可调电阻(211)的阻值。

Description

显示装置及其调节方法
相关申请的交叉引用
本申请要求于2018年10月29日提交中国专利局、申请号为201811269576.2、申请名称为“显示装置及其调节方法”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及显示技术领域，特别是涉及一种显示装置及其调节方法。
背景技术
这里的陈述仅提供与本申请有关的背景信息，而不必然地构成现有技术。
示例性的显示装置的一般显示原理是通过TFT(Thin Film Transistor，薄膜晶体管)基板上纵横交错的栅线和数据线控制各个像素逐行打开或关闭，以实现理想图像的显示。而控制像素打开或关闭的栅极驱动信号和数据信号是从显示装置中的控制芯片发出的，通常需要利用COF(Chip On Film，覆晶薄膜)将栅极驱动信号和数据信号分别传输至TFT基板上的栅线和数据线。示例性的处理方式为扇出(fan-out)布局，所谓扇出布局，就是连接栅线和数据线的一部分导线在整体上呈扇形，而扇出布局中位于扇出区域两侧的导线的长度会比位于扇出区域中间的导线长很多，所以两侧导线的阻值比中间导线的阻值大很多，导致栅极驱动信号或数据信号在两侧导线传输时波形严重失真，产生色偏，进而使得该扇出区域两侧导线所控制的像素呈现亮斑或暗斑(fan-out mura)，影响了显示装置的显示效果。
申请内容
根据本申请的各种实施例，提供一种可以改善由于扇出区导线长度不一导致最终显示出现亮斑或暗斑的显示装置。
此外，还提供一种显示装置的调节方法。
一种显示装置，所述显示装置包括显示面板和驱动电路，所述显示面板 包括显示区域和扇出区域，所述显示区域中设置有多条数据线，所述扇出区域设置有多条连接线；其中，每一条数据线与一连接线相互连接；
所述驱动电路包括：
检测电路，设置为检测所述连接线的阻值；所述连接线包括第一连接线和第二连接线；
多个源驱动电路，所述源驱动电路内部集成有可调电阻，所述显示面板经由所述连接线与所述源驱动电路的所述可调电阻电连接；
控制芯片，所述控制芯片通过功能引脚分别与多个所述源驱动电路电连接，所述控制芯片设置为比较所述第一连接线和所述第二连接线的阻值、并根据所述比较结果输出控制信号；
所述源驱动电路接收所述控制信号、并根据所述控制信号调整所述可调电阻的阻值，使所述第一连接线与所述第二连接线在所述扇出区的阻值相同。
在其中一个实施例中，所述可调电阻的数量与所述连接线的数量一一对应。
在其中一个实施例中，所述显示装置还包括亮度传感器，设于所述扇出区域，设置为检测所述扇出区域中的显示亮度；
所述控制芯片根据所述阻值比较结果输出控制信号，是根据所述阻值比较结果与所述显示亮度输出控制信号；
所述源驱动电路还设置为接收所述控制信号、并根据所述控制信号调整所述可调电阻的阻值，使所述第一连接线与所述第二连接线在所述扇出区的阻值相同。
在其中一个实施例中，所述显示装置还包括设置于所述扇出区域边缘的覆晶薄膜，所述源驱动电路设置于所述覆晶薄膜上。
在其中一个实施例中，所述可调电阻为数字电位器，所述源驱动电路内集成有数字电位控制电路，所述数字电位控制电路设置为调整所述数字电位器的阻值。
在其中一个实施例中，所述控制芯片为时序控制器。
在其中一个实施例中，所述显示面板为液晶显示面板。
在其中一个实施例中，所述显示面板为有机发光显示面板。
在其中一个实施例中，所述显示面板为量子点发光显示面板。
在其中一个实施例中，所述数字电位控制电路内预先存储有多组输出至所述可调电阻的阻值。
一种显示装置的调节方法，基于一种显示装置，所述显示装置包括显示面板和驱动电路，所述显示面板包括显示区域和扇出区域，所述显示区域中设置有多条数据线，所述扇出区域设置有多条连接线；其中，每一条数据线与一连接线对应连接；所述驱动电路包括：
检测电路，设置为检测所述连接线的阻值；
多个源驱动电路，所述源驱动电路内部集成有可调电阻，所述显示面板经由所述连接线与所述源驱动电路的所述可调电阻电连接；
控制芯片，所述控制芯片通过功能引脚分别与多个所述源驱动电路电连接；
所述调节方法包括：
检测所述连接线在扇出区域的阻值，所述连接线包括第一连接线和第二连接线；
对所述第一连接线和所述第二连接线的阻值进行比较；
根据所述阻值比较结果调整所述可调电阻的阻值，使所述第一连接线与所述第二连接线在所述扇出区的阻值相同。
在其中一个实施例中，所述检测所述连接线在扇出区域的阻值的步骤包括：
测量所述第一连接线和所述第二连接线在扇出区域的走线长度；
根据所述走线长度计算走线阻值。
在其中一个实施例中，所述走线阻值的计算公式为：
R＝ρL/S
其中，ρ为连接线的电阻率，由连接线本身的性质决定，L为连接线的长度，S为连接线的横截面积。
在其中一个实施例中，所述检测所述连接线在扇出区域的阻值的步骤包括：
分别检测输入至所述第一连接线的第一电压和输入至所述第二连接线的 第二电压；
根据检测的所述第一电压和所述第二电压确定所述第一连接线、第二连接线的阻值。
在其中一个实施例中，所述根据所述比较结果调整所述可调电阻的阻值的步骤包括：
若所述第一连接线的阻值大于所述第二连接线的阻值，则控制与所述第二连接线连接的可调电阻的阻值增大；
若所述第一连接线的阻值等于所述第二连接线的阻值，则不改变所述可调电阻的阻值；
若所述第一连接线的阻值小于所述第二连接线的阻值，则控制与所述第一连接线连接的可调电阻的阻值增大。
在其中一个实施例中，所述显示装置的调节方法还包括：
对比较过的所述连接线进行标识。
在其中一个实施例中，所述显示装置的调节方法还包括：
对长度相同的所述连接线进行筛选。
在其中一个实施例中，所述显示装置的调节方法还包括：
检测所述扇出区域的显示亮度；
将所述显示亮度与预设的显示亮度基准进行比较、并输出亮度比较结果；
所述根据所述阻值比较结果调整所述可调电阻的阻值，使所述第一连接线与所述第二连接线在所述扇出区的阻值相同的步骤，是根据所述阻值比较结果和所述亮度比较结果调整所述可调电阻的阻值，使所述第一数据线与所述第二数据线在所述扇出区的阻值相同。
在其中一个实施例中，所述预设的显示亮度基准为所述显示区域正常显示的显示亮度。
一种显示装置的调节方法，其中，包括：
检测连接线在扇出区域的阻值，所述连接线包括第一连接线和第二连接线；
对所述第一连接线和所述第二连接线的阻值进行比较；
根据所述阻值比较结果调整可调电阻的阻值；
检测阻值调整后的所述扇出区域的显示亮度；
将所述显示亮度与预设的显示亮度基准进行比较；
根据所述亮度比较结果调整所述可调电阻的阻值，使所述第一连接线与所述第二连接线在所述扇出区的阻值相同。
上述显示装置及其调节方法，通过对扇出区域的走线的阻值进行检测、比较，并根据比较结果调整可调电阻的阻值，使得连接线在扇出区的阻值相同，进而减小由于连接线长度不一所带来阻抗差异，进一步减小栅驱动信号或数据信号在扇出区域的走线中的传输时间延迟差异，可有效避免亮斑或暗斑以及色偏现象，进而使得显示面板最终的显示效果更加均匀。
附图说明
为了更清楚地说明本申请实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他实施例的附图。
图1为一实施例中的显示装置的结构示意图；
图2为图1中显示区域110的像素排列方式示意图；
图3为另一实施例中的显示装置的结构示意图；
图4为一实施例中的显示装置的调节方法流程示意图；
图5为图4中步骤S100的具体流程示意图；
图6为图4中步骤S300的具体流程示意图；
图7为另一实施例中的显示装置的调节方法流程示意图；
图8为再一实施例中的显示装置的调节方法流程示意图。
具体实施方式
为了便于理解本申请，下面将参照相关附图对本申请进行更全面的描述。附图中给出了本申请的可选实施例。但是，本申请可以以许多不同的形式来实现，并不限于本文所描述的实施例。相反地，提供这些实施例的目的是使对本申请的公开内容的理解更加透彻全面。
除非另有定义，本文所使用的所有的技术和科学术语与属于申请的技术领域的技术人员通常理解的含义相同。本文中在申请的说明书中所使用的术语只是为了描述具体的实施例的目的，不是旨在限制本申请。本文所使用的术语“和/或”包括一个或多个相关的所列项目的任意的和所有的组合。
请参阅图1，为一实施例中的显示装置的结构示意图。该显示装置10可以包括显示面板100和驱动电路200。其中，显示面板100包括显示区域110和扇出区域120，显示区域110也即是有图像信息显示的一块区域，也可以称为显示区(active area)；扇出区域120就是与显示区域110的栅线、数据线连接的一部分导线在整体上呈扇形，为了便于区分，将这一部分导线所处的区域称为扇出区域120或者扇出区(fan-out)。显示面板可例如为TFT-LCD(Thin Film Transistor Liquid Crystal Displayer，薄膜晶体管液晶显示器)显示面板、OLED(Organic Light-Emitting Diode，有机发光二极管)显示面板、QLED(Quantum Dot Light Emitting Diodes，量子点发光二极管)显示面板、曲面显示面板或其他显示面板。本申请以显示面板为TFT-LCD显示面板为例进行说明。TFT-LCD主要驱动原理，系统主板将R/G/B压缩信号、控制信号及电源通过引线与PCB(Printed Circuit Board，印刷电路板)的connector(连接器)相连接，这些压缩信号、控制信号经过PCB板上的控制芯片处理后，经PCB上的引线，通过S-COF(Source-Chip on Film，源级薄膜驱动芯片)和G-COF(Gate-Chip on Film，栅极薄膜驱动芯片)与显示区连接，从而使得LCD获得所需的电源和控制信号信号。
显示区域110内设置有多条数据线111，从图1中可以看出，在显示区域110，各数据线111的走线长度一致；在扇出区域120设置有多条连接线121，每一条数据线111与一连接线121相互连接。进一步地，驱动电路200可以包括检测电路(图1未标示)，源驱动电路210以及控制芯片220。由于一般的显示装置在进行像素矩阵设计时，需要将源驱动电路210的输出走线在压合(bonding)区进行集中布局(layout)处理，其处理方式为扇出布局，扇出布局中的输出导线也即是本申请中的连接线121。在扇出区域120中，各连接线121的走线长度不同，位于扇出区域120中 心位置的连接线121走线最短，且由中心向两侧展开连接线121的长度依次增加；在显示区域110，各数据线111的走线长度一致。因此，源驱动电路210输出到显示区域110的各条连接线121的距离不相同，导致扇出区域120中各连接线121的阻抗无法达成一致，进而导致出现亮斑或暗斑现象，影响用户的观看体验。其中，为了表述简便，将连接线121细分为第一连接线(图1未标示)和第二连接线(图1未标示)，第一连接线的长度比第二连接线的长度短，换句话说，第二连接线的阻抗大于第一连接线的阻抗。可以理解，第一连接线的长度也可以与第二连接线的长度相等，或者第一连接线的长度比第二连接线的长度长。
可以理解，显示区域110还设置有多条栅线以及设置为驱动栅线的多个栅极驱动电路，栅极驱动电路基于时钟信号产生选通信号，选通信号也即是栅线驱动电压信号，其作用是通过控制薄膜晶体管的开关，来控制颜色数据的写入，进而驱动显示面板进行显示。
具体地，如图2所示，该图为图1中显示区域110的像素排列方式示意图。该显示面板100的像素单元包括具有红色(Red)、绿色(Green)和蓝色(Blue)三种不同颜色的三个子像素，且每个像素单元设置有一条数据线和三条栅线。进一步地，每个子像素均由相应的栅线驱动；每个像素单元均由相应的数据线驱动。例如，像素单元P1设置有数据线Data 1和栅线Gate 1、Gate 2及Gate 3。其中，数据线Data 1设置为输入颜色数据信息；栅线Gate 1、Gate 2及Gate 3分别设置为控制像素单元中蓝色(B)、绿色(G)及红色(R)子像素的TFT(Thin Film Transistor Liquid Crystal Displayer，薄膜晶体管)开关，进而控制颜色数据信息的写入。然而，由于在扇出区域120不同连接线121的阻抗不一样，在控制混色画面数据信息的写入时，较长数据线由于阻抗过大，导致某些颜色的写入不足，因此画面显示出现色差。
进一步地，检测电路设置为检测第一连接线、第二连接线的阻值，示例性地，检测电路可以通过检测第一连接线、第二连接线的电压的大小的方式来检测第一连接线、第二连接线的阻值大小，其典型的可以利用现有的软件进行模拟计算阻值，示例性地，可使用阻值提取软件进行模拟测量； 也可以是通过测量第一连接线、第二连接线的长度的方式来测量阻值的大小，其中，可以通过公式表示为：
R＝ρL/S
其中，ρ为连接线的电阻率，由连接线本身的性质决定，L为连接线的长度，S为连接线的横截面积。
通常来说，源驱动电路210设置为接收控制芯片220输出的时钟信号，然后基于时钟信号产生选通信号，选通信号即是设置为驱动相应的数据线开启或关闭的信号。进一步地，源驱动电路210的内部集成有可调电阻211，显示面板100经过连接线121与源驱动电路210内部的可调电阻211电连接。
控制芯片220通过功能引脚及连接引线221分别与多个源驱动电路210电连接，控制芯片220设置为比较第一连接线和第二连接线的阻值、并根据阻值比较结果输出控制信号。具体的，控制芯片220可以为时序控制器(Time-Controller，T-CON)，时序控制器主要设置为为显示区域110的数据线111和栅线提供时钟信号，在本申请中，控制芯片220还设置为比较第一连接线和第二连接线的阻值，也就是第一连接线与第二连接线之间的阻值差，根据阻值比较结果(阻值差)输出控制信号，通过功能引脚和连接引线221传输给源驱动电路210，源驱动电路210接收到控制信号之后，调整可调电阻211的阻值，使得第一连接线和第二连接线在扇出区的阻值相同。
上述实施例，通过对扇出区域的走线的阻值进行检测、比较，并根据比较结果调整可调电阻的阻值，使得连接线在扇出区的阻值相同，进而减小由于连接线长度不一所带来阻抗差异，进一步减小栅驱动信号或数据信号在扇出区域的走线中的传输时间延迟差异，可有效避免亮斑或暗斑以及色偏现象，进而使得显示面板最终的显示效果更加均匀。
进一步地，可调电阻211可以为数字电位器，相应地，源驱动电路210内集成有设置为调整数字电位器的阻值的数字电位控制电路212，数字电位器是比较精确的可调电阻，同时控制数字电位器的数字电位控制电路212也是比较简单的控制方式。在本申请中，可调电阻211的数量与连接 线121的数量一一对应，换句话说，本申请针对每一条扇出区域120内的导线都配置了单独的可调电阻211，这样可以做到每一条连接线的阻抗可调，从而增大本申请的灵活性。更进一步地，由于扇出区域120内的导线非常多，所以，需要配置的可调电阻211的数量也会非常多，进而使得调整起来较为复杂，因此，在本实施例中，可以针对几个型号的显示面板(比如大、中、小型面板或者典型尺寸的显示面板)内的扇出区域120的连接线121的长度与可调电阻的阻值之间的关系预先设定好可调电阻的几组阻值，这样，在后续需要调整的时候，只需要相应的控制电路212根据预先设置好的型号直接在几组可调电阻阻值中进行选取，然后进行更改就好。从而降低调整的复杂程度，使得本申请的方案更加灵活。
请继续参阅图3，为另一个实施例中的显示装置的结构示意图，该显示装置10可以包括显示面板100，驱动电路200以及亮度传感器300。其中，显示面板100包括显示区域110和扇出区域120，显示区域110也即是有图像信息显示的一块区域，也可以称为显示区(active area)；扇出区域120就是与显示区域110的栅线、数据线连接的一部分导线在整体上呈扇形，为了便于区分，将这一部分导线所处的区域称为扇出区域120或者扇出区(fan-out)。显示面板可例如为TFT-LCD(Thin Film Transistor Liquid Crystal Displayer，薄膜晶体管液晶显示器)显示面板、OLED(Organic Light-Emitting Diode，有机发光二极管)显示面板、QLED(Quantum Dot Light Emitting Diodes，量子点发光二极管)显示面板、曲面显示面板或其他显示面板。本申请以显示面板为TFT-LCD显示面板为例进行说明。TFT-LCD主要驱动原理，系统主板将R/G/B压缩信号、控制信号及电源通过引线与PCB(Printed Circuit Board，柔性电路板)的connector(连接器)相连接，这些压缩信号、控制信号经过PCB板上的控制芯片处理后，经PCB上的引线，通过S-COF(Source-Chip on Film，源级薄膜驱动芯片)和G-COF(Gate-Chip on Film，栅极薄膜驱动芯片)与显示区域连接，从而使得LCD获得所需的电源和控制信号信号。
可以理解，对于显示面板100、驱动电路200以及的具体描述可以参照前述实施例的有关描述，在此不再进一步赘述。
请继续参阅图3，显示装置10还包括亮度传感器300，设于扇出区域120，设置为检测扇出区域120的显示亮度。由于在扇出区域120，各连接线121的长度不一致，导致扇出区域120中的各连接线121的阻抗无法达成一致，进而出现亮斑或者暗斑的现象，所以在扇出区域120出现亮斑或者暗斑现象的时候，该区域内的显示亮度会与显示区域110的显示亮度不一样。具体地，当扇出区域120出现亮斑的时候，其显示亮度体现在数值上就会比显示区域110的显示亮度数值大；当扇出区域110出现暗斑的时候，其显示亮度体现在数值上就会比显示区域110的显示亮度数值小。故，以显示区域110正常显示的显示亮度数值为预设的数值，也即是理想的画面显示效果。
控制芯片220根据阻值比较结果输出的控制信号，就可以是根据阻值比较结果和显示亮度进行输出的控制信号。换句话说，控制芯片220输出至源驱动电路210的控制信号可以是将阻值比较结果和显示亮度进行结合之后输出的控制信号。通常来说，仅仅根据模拟测量出来的扇出区域120的阻值数值来调整可变电阻211的阻值可能还是和实际的阻值有一定的差异，所以，为了进一步减小差异，本申请在扇出区域120设置亮度传感器300来检测扇出区域120的显示亮度，通过实时检测出来的显示亮度数值与预设的显示亮度进行比较，然后控制芯片220根据阻值比较结果和显示亮度给出控制信号，源驱动电路210接收该控制信号后控制内部的数字电位控制电路调整可调电阻的阻值，使得扇出区域120的各连接线的阻抗相同，进而使得显示面板的显示更加均匀。
请继续参阅图3，在扇出区域120的边缘位置还设置有覆晶薄膜(chip on film)240，源驱动电路210设置于覆晶薄膜240上。栅极驱动电路也可以通过覆晶薄膜与显示面板电性连接，随着显示技术的发展，显示装置因具有高画质、省电、机身薄、窄边框等优点而被广泛应用，其中，窄边框能让显示装置的显示画面面积更大，进而增加用户的体验感。所以，为了减小边框的面积，本申请的栅极驱动电路采用GOA技术，即(Gate driver on Array，阵列基板上栅驱动集成)，就是将栅极驱动电路集成在显示面板的阵列基板上，从而可以省掉栅极驱动集成电路部分，以从材料成本和制 作工艺两方面降低产品成本。
上述实施例，通过对扇出区域的走线的阻值进行检测、比较，然后检测扇出区域的显示亮度，并根据阻值比较结果和显示亮度调整可调电阻的阻值，使得连接线在扇出区的阻值相同，进而减小由于连接线长度不一所带来阻抗差异，进一步减小栅驱动信号或数据信号在扇出区域的走线中的传输时间延迟差异，可有效避免亮斑或暗斑以及色偏现象，进而使得显示面板最终的显示效果更加均匀。
请参阅图4，为一实施例中的显示装置的调节方法流程示意图。该调节方法基于前述实施例描述的显示装置，该调节方法可以包括步骤：S100-S300。
步骤S100，检测连接线在扇出区域的阻值，连接线可以包括第一连接线和第二连接线。
具体的，请辅助参阅图1，由于一般的显示装置在进行像素矩阵设计时，需要将源驱动电路210的输出走线在压合(bonding)区进行集中布局(layout)处理，其处理方式为扇出布局，扇出布局中的输出导线也即是本申请中的连接线121。在扇出区域120中，各连接线121的走线长度不同，位于扇出区域120中心位置的连接线121走线最短，且由中心向两侧展开连接线121的长度依次增加；在显示区域110，各数据线111的走线长度一致。因此，源驱动电路210输出到显示区域110的各条连接线121的距离不相同，导致扇出区域120中各连接线121的阻抗无法达成一致，进而导致出现亮斑或暗斑现象，影响用户的观看体验。其中，为了表述简便，将连接线121细分为第一连接线(图1未标示)和第二连接线(图1未标示)，第一连接线的长度比第二连接线的长度短，换句话说，第二连接线的阻抗大于第一连接线的阻抗。可以理解，第一连接线的长度也可以与第二连接线的长度相等，或者第一连接线的长度比第二连接线的长度长。
进一步地，请参阅图5，该步骤100可以包括步骤S110-S120。
步骤S110，测量第一连接线和第二连接线在扇出区域的走线长度；
步骤S120，根据走线长度计算走线阻值。
具体的，可以通过以下公式来测量第一连接线和第二连接线的阻值大 小：
R＝ρL/S
其中，ρ为连接线的电阻率，由连接线本身的性质决定，L为连接线的长度，S为连接线的横截面积。
可以理解，在扇出区域120还设有多条连接线，此处仅举例其中两条连接线进行说明，其不应当被理解为对本申请的进一步限制。
步骤S200，对第一连接线和第二连接线的阻值进行比较。
具体的，可通过显示装置10中的控制芯片220对第一连接线和第二连接线的阻值进行比较。控制芯片220可以直接对电阻数值进行比较，也可以通过检测输入至第一连接线、第二连接线的电压大小，来对第一连接线和第二连接线的阻值大小进行比较。
步骤S300，根据阻值比较结果调整可调电阻的阻值，使第一连接线与第二连接线在扇出区域的阻值相同。
具体的，请参阅图6，步骤S300可以包括步骤S310-S330。
步骤S310，若第一连接线的阻值大于第二连接线的阻值，则控制与第二连接线连接的可调电阻的阻值增大。
具体的，根据检测出来的第一连接线、第二连接线的阻值，然后对这两条连接线的阻值进行进一步的比较，如果第一连接线的阻值大于第二连接线的阻值，则控制与第二连接线连接的可调电阻的阻值增大。这里主要是控制芯片220根据比较结果输出的控制信号，源驱动电路接收控制信号之后，控制内部的数字电位控制电路调整相应的可调电阻的阻值。例如，第二连接线为扇出区域120中心区域的线路部分，第一连接线为扇出区域120靠近两端的线路部分。其检测和比较出来的结果必然是第一连接线(较长)的阻抗大于第二连接线(较短)的阻抗，这时，只需要控制与第二连接线连接的可调电阻的阻值增大至与第一连接线的阻值相同。类似的，其他连接线也可以按照此种方式进行相应的阻值的增加。由于扇出区域120内的导线非常多，所以，需要配置的可调电阻211的数量也会非常多，进而使得调整起来较为复杂，因此，在本实施例中，可以针对几个型号的显示面板(比如大、中、小型显示面板或者典型尺寸的显示面板)内的扇出 区域120的连接线121的长度与可调电阻的阻值之间的关系预先设定好可调电阻的几组阻值，这样，在后续需要调整的时候，只需要相应的控制电路212根据预先设置好的型号直接在几组可调电阻阻值中进行选取，然后进行更改就好。从而降低调整的复杂程度，使得本申请的方案更加灵活。
进一步地，通过对两条线的比较可能存在重复对比等问题，例如，位于扇出区域120两端的导线的长度有相同的，那么在其中一条连接线与其他导线进行比较之后，可能存在另一条再与这一条导线进行比较的情况，在这种情况下，可以针对导线长度相同的或者已经比较过的导线进行一个标识或者筛选，进而降低复杂和不必要的计算过程，从而降低成本和复杂程度。
更进一步地，还可以对连接线设定一个统一的电阻值，统一的电阻值可以参照扇出区域120中导线长度最长的电阻值进行设置，这样后续只需要按照设定的电阻值进行调整即可。
步骤S320，若第一连接线的阻值等于第二连接线的阻值，则不改变可调电阻的阻值。
具体的，当检测出来的第一连接线的阻值等于第二连接线的阻值的时候，则不改变可调电阻的阻值。
步骤S330，若第一连接线的阻值小于第二连接线的阻值，则控制与第一连接线连接的可调电阻的阻值增大。
具体的，对于第一连接线与第二连接线阻值的检测、比较和调整方法可以参照步骤S310的有关描述，与之不同的是，此步骤是在第一连接线的阻值小于第二连接线的阻值、需要增大与第一连接线连接的可调电阻的阻值的情况。在此不再过多赘述。
上述实施例，通过对扇出区域的连接线的阻值进行检测、比较，并根据比较结果调整与阻值较小的连接线对应的可调电阻的阻值，使得连接线在扇出区的阻值相同，进而减小由于连接线长度不一所带来阻抗差异，进一步减小栅驱动信号或数据信号在扇出区域的走线中的传输时间延迟差异，可有效避免亮斑或暗斑以及色偏现象，进而使得显示面板最终的显示效果更加均匀。
请参阅图7，为另一实施例中的显示装置的调节方法流程示意图，该调节方法可以包括步骤：S400-S600。
步骤S400,检测扇出区域的显示亮度。
步骤S500，将显示亮度与预设的显示亮度基准进行比较、并输出亮度比较结果。
具体地，由于在扇出区域120，各连接线121的长度不一致，导致扇出区域120中的各连接线121的阻抗无法达成一致，进而出现亮斑或者暗斑的现象，所以在扇出区域120出现亮斑或者暗斑现象的时候，该区域内的显示亮度会与显示区域110的显示亮度不一样。具体地，当扇出区域120出现亮斑的时候，其显示亮度体现在数值上就会比显示区域110的显示亮度数值大；当扇出区域110出现暗斑的时候，其显示亮度体现在数值上就会比显示区域110的显示亮度数值小。故，以显示区域110正常显示的显示亮度数值为预设的显示亮度基准，也即是理想的画面显示效果。控制芯片220对扇出区域120的显示亮度进行比较之后输出相应的亮度比较结果。
步骤S600，根据阻值比较结果调整可调电阻的阻值，使第一连接线与第二连接线在扇出区的阻值相同的步骤，是根据阻值比较结果和亮度比较结果调整可调电阻的阻值，使第一数据线与第二数据线在扇出区的阻值相同。换句话说，源驱动电路210根据阻值比较结果调整可调电阻的阻值可以是将阻值比较结果和显示亮度进行结合之后再作出的调整。通常来说，仅仅根据模拟测量出来的扇出区域120的阻值数值来调整可变电阻211的阻值可能还是和实际的阻值有一定的差异，所以，为了进一步减小差异，本申请在扇出区域120设置亮度传感器300来检测扇出区域120的显示亮度，通过实时检测出来的显示亮度数值与预设的显示亮度进行比较，然后控制芯片220根据阻值比较结果和显示亮度给出控制信号，源驱动电路210接收该控制信号后控制内部的数字电位控制电路调整可调电阻的阻值，使得扇出区域120的各连接线的阻抗相同，进而使得显示面板的显示更加均匀。
上述实施例，通过对扇出区域的走线的阻值进行检测、比较，然后检 测扇出区域的显示亮度，并根据阻值比较结果和显示亮度调整可调电阻的阻值，使得连接线在扇出区的阻值相同，进而减小由于连接线长度不一所带来阻抗差异，进一步减小栅驱动信号或数据信号在扇出区域的走线中的传输时间延迟差异，可有效避免亮斑或暗斑以及色偏现象，进而使得显示面板最终的显示效果更加均匀。
请继续参照图8，为另一实施例中的显示装置的调节方法，该调节方法可以包括步骤：S10-S60。
步骤S10，检测连接线在扇出区域的阻值，连接线包括第一连接线和第二连接线。
步骤S20，对第一连接线和第二连接线的阻值进行比较。
步骤S30，根据阻值比较结果调整可调电阻的阻值，使第一连接线与第二连接线在扇出区的阻值相同。
步骤S40,检测阻值调整后的扇出区域的显示亮度。
步骤S50，将显示亮度与预设的显示亮度基准进行比较、并输出亮度比较结果。
步骤S60，根据亮度比较结果调整可调电阻的阻值，使第一连接线与第二连接线在扇出区的阻值相同。
可以理解，对于步骤S10-S30的描述可以参照前述调节方法中的步骤S100-S300的有关描述，在此不再进一步赘述。进一步地，对于步骤S40-S60中出现的亮度检测、比较以及可调电阻的调整也可以参照前述实施例的有关描述。与前述实施例不同的是：在此实施例中，是先根据阻值调整可调电阻的阻值，然后在可调电阻的阻值调整之后再对扇出区域的显示亮度进行检测，然后将检测出的显示亮度与预设的显示亮度基准进行比较，根据比较结果来动态调整可调电阻的阻值，从而使第一连接线与第二连接线在扇出区域的阻值相同。
上述实施例，通过对扇出区域的走线的阻值进行检测、比较，然后根据阻值比较结果调整可调电阻的阻值，待阻值调整后再检测扇出区域的显示亮度，将检测出的显示亮度与预设的显示亮度基准进行比较，根据比较结果来动态调整可调电阻的阻值，使得连接线在扇出区的阻值相同，进而 减小由于连接线长度不一所带来阻抗差异，进一步减小栅驱动信号或数据信号在扇出区域的走线中的传输时间延迟差异，可有效避免亮斑或暗斑以及色偏现象，进而使得显示面板最终的显示效果更加均匀。
以上所述实施例的各技术特征可以进行任意的组合，为使描述简洁，未对上述实施例中的各个技术特征所有可能的组合都进行描述，然而，只要这些技术特征的组合不存在矛盾，都应当认为是本说明书记载的范围。
以上所述实施例仅表达了本申请的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对申请专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本申请构思的前提下，还可以做出若干变形和改进，这些都属于本申请的保护范围。因此，本申请专利的保护范围应以所附权利要求为准。

Claims (20)

  1. 一种显示装置，所述显示装置包括显示面板和驱动电路，其中，所述显示面板包括显示区域和扇出区域，所述显示区域中设置有多条数据线，所述扇出区域设置有多条连接线；其中，每一条数据线与一连接线相互连接；
    所述驱动电路包括：
    检测电路，设置为检测所述连接线的阻值；所述连接线包括第一连接线和第二连接线；
    多个源驱动电路，所述源驱动电路内部集成有可调电阻，所述显示面板经由所述连接线与所述源驱动电路的所述可调电阻电连接；
    控制芯片，所述控制芯片通过功能引脚分别与多个所述源驱动电路电连接，所述控制芯片设置为比较所述第一连接线和所述第二连接线的阻值、并根据所述阻值比较结果输出控制信号；
    所述源驱动电路接收所述控制信号、并根据所述控制信号调整所述可调电阻的阻值，使所述第一连接线与所述第二连接线在所述扇出区的阻值相同。
  2. 根据权利要求1所述的显示装置，其中，所述可调电阻的数量与所述连接线的数量一一对应。
  3. 根据权利要求1所述的显示装置，其中，还包括亮度传感器，设于所述扇出区域，设置为检测所述扇出区域中的显示亮度；
    所述控制芯片根据所述阻值比较结果输出控制信号，是根据所述阻值比较结果与所述显示亮度输出控制信号；
    所述源驱动电路还设置为接收所述控制信号、并根据所述控制信号调整所述可调电阻的阻值，使所述第一连接线与所述第二连接线在所述扇出区的阻值相同。
  4. 根据权利要求1所述的显示装置，其中，还包括设置于所述扇出区域边缘的覆晶薄膜，所述源驱动电路设置于所述覆晶薄膜上。
  5. 根据权利要求1所述的显示装置，其中，所述可调电阻为数字电位器，所述源驱动电路内集成有数字电位控制电路，所述数字电位控制电路设置为调整所述数字电位器的阻值。
  6. 根据权利要求1所述的显示装置，其中，所述控制芯片为时序控制器。
  7. 根据权利要求1所述的显示装置，其中，所述显示面板为液晶显示面板。
  8. 根据权利要求1所述的显示装置，其中，所述显示面板为有机发光显示面板。
  9. 根据权利要求1所述的显示装置，其中，所述显示面板为量子点发光显示面板。
  10. 根据权利要求5所述的显示装置，其中，所述数字电位控制电路内预先存储有多组输出至所述可调电阻的阻值。
  11. 一种显示装置的调节方法，基于一种显示装置，所述显示装置包括显示面板和驱动电路，所述显示面板包括显示区域和扇出区域，所述显示区域中设置有多条数据线，所述扇出区域设置有多条连接线；其中，每一条数据线与一连接线对应连接；所述驱动电路包括：
    检测电路，设置为检测所述连接线的阻值；
    多个源驱动电路，所述源驱动电路内部集成有可调电阻，所述显示面板经由所述连接线与所述源驱动电路的所述可调电阻电连接；
    控制芯片，所述控制芯片通过功能引脚分别与多个所述源驱动电路电连接；
    所述调节方法包括：
    检测所述连接线在扇出区域的阻值，所述连接线包括第一连接线和第二连接线；
    对所述第一连接线和所述第二连接线的阻值进行比较；
    根据所述阻值比较结果调整所述可调电阻的阻值，使所述第一连接线与所述第二连接线在所述扇出区的阻值相同。
  12. 根据权利要求11所述的显示装置的调节方法，其中，所述检测所述连接线在扇出区域的阻值的步骤包括：
    测量所述第一连接线和所述第二连接线在扇出区域的走线长度；
    根据所述走线长度计算走线阻值。
  13. 根据权利要求12所述的显示装置的调节方法，其中，所述走线阻值的计算公式为：
    R＝ρL/S
    其中，ρ为连接线的电阻率，由连接线本身的性质决定，L为连接线的长度，S为连接线的横截面积。
  14. 根据权利要求11所述的显示装置的调节方法，其中，所述检测所述连接线在扇出区域的阻值的步骤包括：
    分别检测输入至所述第一连接线的第一电压和输入至所述第二连接线的第二电压；
    根据检测的所述第一电压和所述第二电压确定所述第一连接线、第二连接线的阻值。
  15. 根据权利要求11所述的显示装置的调节方法，其中，所述根据所述比较结果调整所述可调电阻的阻值的步骤包括：
    若所述第一连接线的阻值大于所述第二连接线的阻值，则控制与所述第二连接线连接的可调电阻的阻值增大；
    若所述第一连接线的阻值等于所述第二连接线的阻值，则不改变所述可调电阻的阻值；
    若所述第一连接线的阻值小于所述第二连接线的阻值，则控制与所述第一连接线连接的可调电阻的阻值增大。
  16. 根据权利要求11所述的显示装置的调节方法，其中，还包括：
    对比较过的所述连接线进行标识。
  17. 根据权利要求11所述的显示装置的调节方法，其中，还包括：
    对长度相同的所述连接线进行筛选。
  18. 根据权利要求11所述的显示装置的调节方法，其中，还包括：
    检测所述扇出区域的显示亮度；
    将所述显示亮度与预设的显示亮度基准进行比较、并输出亮度比较结果；
    所述根据所述阻值比较结果调整所述可调电阻的阻值，使所述第一连接线与所述第二连接线在所述扇出区的阻值相同的步骤，是根据所述阻值比较结果和所述亮度比较结果调整所述可调电阻的阻值，使所述第一数据线与所述第二数据线在所述扇出区的阻值相同。
  19. 根据权利要求18所述的显示装置的调节方法，其中，所述预设的显 示亮度基准为所述显示区域正常显示的显示亮度。
  20. 一种显示装置的调节方法，其中，包括：
    检测连接线在扇出区域的阻值，所述连接线包括第一连接线和第二连接线；
    对所述第一连接线和所述第二连接线的阻值进行比较；
    根据所述阻值比较结果调整可调电阻的阻值；
    检测阻值调整后的所述扇出区域的显示亮度；
    将所述显示亮度与预设的显示亮度基准进行比较；
    根据所述亮度比较结果调整所述可调电阻的阻值，使所述第一连接线与所述第二连接线在所述扇出区的阻值相同。
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