WO2015058517A1 - 显示面板及其检测方法 - Google Patents

显示面板及其检测方法 Download PDF

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Publication number
WO2015058517A1
WO2015058517A1 PCT/CN2014/077709 CN2014077709W WO2015058517A1 WO 2015058517 A1 WO2015058517 A1 WO 2015058517A1 CN 2014077709 W CN2014077709 W CN 2014077709W WO 2015058517 A1 WO2015058517 A1 WO 2015058517A1
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WO
WIPO (PCT)
Prior art keywords
display panel
wireless
electrode
data line
grid
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PCT/CN2014/077709
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English (en)
French (fr)
Inventor
李明
金用燮
刘晓涛
Original Assignee
京东方科技集团股份有限公司
合肥京东方光电科技有限公司
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Application filed by 京东方科技集团股份有限公司, 合肥京东方光电科技有限公司 filed Critical 京东方科技集团股份有限公司
Priority to US14/407,280 priority Critical patent/US9829729B2/en
Publication of WO2015058517A1 publication Critical patent/WO2015058517A1/zh

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/1306—Details
    • G02F1/1309—Repairing; Testing
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133509—Filters, e.g. light shielding masks
    • G02F1/133514—Colour filters
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133528—Polarisers
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1343—Electrodes
    • G02F1/134309—Electrodes characterised by their geometrical arrangement
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362—Active matrix addressed cells
    • G02F1/136259—Repairing; Defects
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362—Active matrix addressed cells
    • G02F1/136286—Wiring, e.g. gate line, drain line
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362—Active matrix addressed cells
    • G02F1/136254—Checking; Testing

Definitions

  • Embodiments of the present invention relate to a display panel and a method of detecting the same. Background technique
  • Non-electrical defects are mainly divided into two categories: non-electrical defects and electrical defects.
  • materials that cause non-electrical defects include liquid crystals, metal electrode layers (gate, source, and drain), insulating layers, alignment layers, and sealant.
  • Defects occurring at any step in the process of fabricating the above material layers can produce non-electrical defects such as horizontal black lines, white lines, black spots, and the like.
  • the main cause of electrical defects is array process defects, such as bright lines, bright spots, and signal line breaks.
  • a liquid crystal cell inspection station is set in the cell process production line.
  • the current LCD cell engineering test is placed after the Cell cutting process, using the probe unit in the Cell test equipment to cut the dummy area of the liquid crystal cell (the Dummy area is the part that needs to be discarded when cutting, that is, the subsequent mode on the panel)
  • Signal lines (gate lines, data lines, etc.) of the useless blank space) are probed (eg, shorted bars) for probe testing.
  • Probe testing includes open and color testing of the data and gate lines of the cell, for a single cell.
  • a display signal is input to each signal input port of the liquid crystal cell using the probe unit to detect a malfunction.
  • the detection cannot be performed before the liquid crystal cell is cut, as shown in the dotted area shown by the dotted line in Fig. 1, because the probe unit in the Cell detecting device cannot be probed in the dummy area of each liquid crystal cell 1 to be cut before cutting. Needle detection, that is, the probe cannot touch the signal line lead.
  • the liquid crystal substrate can be detected after being cut into a single liquid crystal cell, so that the bad information feedback is delayed, resulting in subsequent production cost waste, and the conventional The contact lighting device for post-cutting inspection has a very high investment cost.
  • a display panel detecting method comprising: wirelessly sensing, by a wireless signal transmitting electrode connected to a transmitter, a gate line connected to a gate line previously disposed in a cutting area of the display panel
  • the electrode and the data line wireless sensing electrode connected to the data line emit a wireless signal to respectively generate a gate line detection signal and a data line detection signal, thereby realizing detection of the display panel, wherein the gate line wireless sensing electrode and the data line wireless
  • the sensing electrodes form the cutting regions on the array substrate in a process of fabricating gate lines and data lines of the array substrate of the display panel, respectively.
  • wireless signals of different frequencies are transmitted to the gate line wireless sensing electrodes and the data line wireless sensing electrodes through the wireless signal transmitting electrodes, respectively.
  • the gate line wireless sensing electrode includes: a first gate line wireless sensing sub-electrode and a second gate line wireless sensing sub-electrode, the first gate line wireless sensing sub-electrode is connected to an odd-numbered row gate line, and second The gate line wireless sensing sub-electrode is connected to the even-numbered row gate lines.
  • the data line wireless sensing electrode includes N data line wireless sensing sub-electrodes, and data lines of the same color sub-pixel are connected to the same data line wireless sensing sub-electrode, and data lines of different color sub-pixels are connected. Different of the data lines wirelessly sense the sub-electrodes, and the N is the total number of sub-pixel colors.
  • wireless signals having different frequencies and intensities are respectively transmitted to the different data line wireless sensing sub-electrodes by the wireless signal transmitting electrodes.
  • the method before the transmitting the wireless signal, the method further includes: a line signal transmitting electrode of the color filter substrate of the display panel.
  • the method prior to transmitting the wireless signal, the method further includes: a line signal transmitting electrode on the array substrate of the display panel.
  • the method before the transmitting the wireless signal, further includes: placing the upper polarizer on the color film substrate side of the display panel through the first transparent plate, and placing the lower polarizer on the display panel through the second transparent plate On the array substrate side, the wireless signal transmitting electrodes are respectively disposed at positions corresponding to the gate line wireless sensing electrodes and the data line wireless sensing electrodes on the second transparent board.
  • the method before the transmitting the wireless signal, further includes: placing an upper polarizer on a color film substrate side of the display panel through a first transparent plate, and placing a lower polarizer on the display through a second transparent plate
  • the wireless signal transmitting electrodes are respectively disposed at positions corresponding to the gate line wireless sensing electrodes and the data line wireless sensing electrodes on the first transparent board.
  • the method before the transmitting the wireless signal, the method further includes: placing a transparent plate on a color film substrate side of the display panel, and corresponding to the gate line wireless sensing electrode and the data line wireless sensing electrode on the transparent plate
  • the wireless signal transmitting electrodes are respectively disposed at positions.
  • a display panel includes a color film substrate and an array substrate facing each other, wherein
  • the display panel includes a plurality of display areas and a cutting area between the plurality of display areas.
  • the dicing area of the array substrate is provided with a gate line wireless sensing electrode and a data line wireless sensing electrode, and the gate line wireless sensing The electrodes are connected to the gate lines on the array substrate, and the data line wireless sensing electrodes are connected to the data lines on the array substrate.
  • the gate line wireless sensing electrode and the data line wireless sensing electrode are magnetic materials.
  • the gate line wireless sensing electrode and the data line wireless sensing electrode are configured to convert a wireless electromagnetic signal into an electrical signal.
  • the gate line wireless sensing electrode includes a first gate line wireless sensing sub-electrode and a second gate line wireless sensing sub-electrode, and the first gate line wireless sensing sub-electrode is connected to an odd-numbered row gate line, The second gate line wireless sensing sub-electrode is connected to the even row gate line.
  • the data line wireless sensing electrode includes a plurality of data line wireless sensing sub-electrodes, each of the data line wireless sensing sub-electrodes being coupled to a data line driving sub-pixels of different colors.
  • a wireless sensing material connected to a gate and a data line is respectively injected into a dicing area of each liquid crystal cell to be cut to form a wireless sensing.
  • the electrode, the wireless sensing material can absorb the wireless signal and convert it into a voltage signal, so that after forming the entire panel, the wireless signal is directly used, and a corresponding wireless signal is applied to each wireless sensing electrode to give the grid line.
  • Charging with the data line and observing the phenomenon on the display can achieve poor electrical and non-electrical inspection of the display.
  • the invention can detect defects earlier than before the liquid crystal cell is cut, so that the problem can be handled early, and the waste of cost in the subsequent process is avoided.
  • FIG. 1 is a schematic view of a cutting panel to be cut and a cutting area thereon;
  • FIG. 2 is a view showing an example of a display panel used in a display panel detecting method according to an embodiment of the present invention
  • FIG. 3 is a view showing an example of detecting a liquid crystal display panel by a display panel detecting method according to an embodiment of the present invention
  • the detection method detects an example diagram of the OLED display panel.
  • the liquid crystal display panel is taken as an example for description.
  • the liquid crystal cell after the array substrate and the color filter substrate are in the package is detected.
  • the detecting method of this embodiment implements detection of the liquid crystal cell by means of wireless induction power-on.
  • the detection method according to one embodiment is as follows:
  • the gate line wireless sensing electrode and the data line wireless sensing electrode form a cutting area on the array substrate in the process of fabricating the gate line and the data line of the array substrate of the liquid crystal cell, respectively.
  • the wireless sensing electrode and the wireless signal transmitting electrode are both magnetic materials, similar to the ferrite absorbing material, and the wireless signal transmitting electrode emits a magnetic signal to the wireless sensing electrode, and the wireless sensing electrode can convert the wireless magnetic signal into electromagnetic induction technology. An electrical signal to generate a corresponding voltage.
  • wireless signals having different frequencies are respectively transmitted to the gate line wireless sensing electrodes and the data line wireless sensing electrodes.
  • a schematic diagram of a wireless sensing electrode disposed in a display panel detecting method is provided with a gate line wireless sensing electrode in a dummy region of a liquid crystal cell 1 to be cut: including a first gate Line wireless sensing sub-electrode 21 and second grid line wireless sensing sub-electrode 22, A gate line wireless sensing sub-electrode 21 is connected to the odd row gate lines, and the second gate line wireless sensing sub-electrode 22 is connected to the even row gate lines.
  • wireless signals are transmitted to the first gate line wireless sensing sub-electrode 21 and the second gate line wireless sensing sub-electrode 22 at intervals.
  • the data line wireless sensing electrode includes N data line wireless sensing sub-electrodes, and each data line wireless sensing sub-electrode is connected to drive data lines of the same color sub-pixel, different data lines
  • the wireless sensing sub-electrode is coupled to drive data lines of different color sub-pixels, and the N is the total number of sub-pixel colors.
  • the liquid crystal cell uses the RGB color mode, the first data line wireless sensing sub-electrode 31, the second data line wireless sensing sub-electrode 32, and the third data line wireless sensing sub-electrode 33.
  • the first data line wireless sensing sub-electrode 31, the second data line wireless sensing sub-electrode 32, and the third data line wireless sensing sub-electrode 33 are respectively connectable to red, green and blue sub-pixels. Transmitting different frequencies (avoiding signal interference) and wireless signals of different intensities to the first data line wireless sensing sub-electrode 31, the second data line wireless sensing sub-electrode 32, and the third data line wireless sensing sub-electrode 33 respectively during detection, Produce different voltages.
  • the number and arrangement of the gate line wireless sensing electrodes and the data line wireless sensing electrodes are not limited thereto, as long as the wireless signals can be separately sensed and the wireless signals are converted into electrical signals to be applied to the gate lines and the data lines.
  • the gate line wireless sensing electrode may also have only one gate line wireless sensing sub-electrode (connecting all the gate lines), the data line wireless sensing electrode has only one data line wireless sensing sub-electrode (connecting all data lines); or the data line wireless sensing electrode Including M (number of data lines) data lines wireless sensing sub-electrodes, each data line is connected to a different data line wireless sensing sub-electrode.
  • a backlight 8 is disposed under the liquid crystal cell 1
  • a lower polarizer is disposed above the backlight 8
  • an upper polarizer is disposed above the liquid crystal cell so that the display effect can be observed.
  • the upper polarizer is placed on the first transparent plate 5, and the lower polarizer is placed on the second transparent plate 4. Since it is a line job, each uncut liquid crystal cell 1 is transported between the first transparent plate 5 and the second transparent plate 4 for inspection.
  • the transparent plates 4 and 5 carrying the polarizers are respectively disposed on the upper and lower sides of the liquid crystal cell.
  • the transparent plates 4 and 5 carrying the polarizers may be disposed on the surfaces of the array substrate and the color film substrate facing the liquid crystal layer, respectively.
  • the wireless signal transmitting electrode 6 can be disposed at any wireless sensing electrode capable of illuminating the gate line and the number The position of the wireless signal emitted by the line wireless sensing electrode.
  • one side of the color filter substrate is defined as a viewing side for the liquid crystal cell formed by the color filter substrate and the array substrate.
  • the wireless signal transmitting electrode 6 may be respectively disposed in the color setting of the liquid crystal cell 1 (for example, the wireless sensing electrode and the wireless signal transmitting electrode are opposite to each other);
  • the wireless signal transmitting electrode 6 may be respectively disposed at a position corresponding to the gate line wireless sensing electrode and the data line wireless sensing electrode facing away from the viewing side surface of the array substrate (for example, the wireless sensing electrode and the wireless signal transmitting electrode are opposite to each other);
  • the wireless signal transmitting electrode 6 is respectively disposed on the transparent plate 4 corresponding to the gate line wireless sensing electrode and the data line wireless sensing electrode; or the wireless signal transmitting electrode 6 may be disposed on the first transparent plate 5 as shown in FIG.
  • the transmitter connected to the wireless signal transmitting electrode 6 is turned on to transmit a wireless signal to the wireless sensing electrode.
  • the wireless signal transmitting electrode 6 can be connected to the transmitter by wires, but the wires are usually opaque and are inconvenient to observe during the detection process.
  • each of the transparent lead electrodes may be connected to one of the wireless signal transmitting electrodes 6 by forming a plurality of transparent lead electrodes in the dummy region of the substrate carrying the wireless signal transmitting electrode 6, and each of the transparent lead electrodes is connected differently
  • the wireless signal transmitting electrode 6 has the other end connected to the edge of the substrate carrying the wireless signal transmitting electrode 6 to facilitate connection to the transmitter.
  • the wireless signal emitting electrode is formed on the surface facing the viewing side of the color filter substrate in the above embodiment, in other embodiments according to the present invention, the inner surface of the color filter substrate (ie, the surface facing the liquid crystal layer) may also be used.
  • a wireless signal transmitting electrode is formed thereon.
  • a wireless signal transmitting electrode can be formed on the inner side surface of the array substrate (i.e., the surface facing the liquid crystal layer).
  • the detection method of this embodiment is different from the prior art except that the power-on mode is different from the prior art.
  • other detection steps may be similar to the prior art (eg, the method of determining the bad type according to different display effects is the same as the prior art), here No longer.
  • the detection method of the embodiment can realize the detection without cutting the liquid crystal cell, detect the problem early, and repair in time, thereby avoiding the inflow of the bad product into the subsequent process, resulting in waste of cost.
  • the display panel detecting method of the present invention can be applied not only to a liquid crystal cell but also to an OLED display panel. As shown in FIG. 4, since the OLED display panel 1' does not require a backlight and does not require a polarizer, the transparent plate 7 (as a holder for carrying the wireless signal transmitting electrode 6) is placed.
  • the transparent plate 7 is disposed at a position corresponding to the dicing area, and further provides a display panel according to an embodiment of the present invention, including a color film substrate and an array substrate facing each other, wherein The display panel includes a plurality of display areas and a cutting area between the plurality of display areas, wherein the dicing area of the array substrate is provided with a gate line wireless sensing electrode and a data line wireless sensing electrode, and the gate line wireless sensing electrode Connected to the gate lines on the array substrate, the data line wireless sensing electrodes are connected to the data lines on the array substrate.
  • the gate line wireless sensing electrode and the data line wireless sensing electrode are magnetic materials.
  • the gate line wireless sensing electrode and the data line wireless sensing electrode are configured to convert a wireless electromagnetic signal into an electrical signal.
  • the gate line wireless sensing electrode includes a first gate line wireless sensing sub-electrode and a second gate line wireless sensing sub-electrode, and the first gate line wireless sensing sub-electrode is connected to an odd-numbered row-gate line, the second gate The line wireless sensing sub-electrode is connected to the even-numbered row gate lines.
  • the data line wireless sensing electrode includes a plurality of data line wireless sensing sub-electrodes, and each of the data line wireless sensing sub-electrodes is connected to a data line that drives sub-pixels of different colors.

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Optics & Photonics (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Geometry (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Liquid Crystal (AREA)
  • Liquid Crystal Display Device Control (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

一种显示面板（1，1'）及其检测方法。通过连接到发射机的无线信号发射电极（6）分别向预先设置在所述显示面板（1，1'）的切割区的与栅线连接的栅线无线感应电极及与数据线连接的数据线无线感应电极发射无线信号，以分别产生栅线检测信号和数据线检测信号，实现对显示面板的检测。栅线无线感应电极和数据线无线感应电极分别在制作显示面板（1，1'）的阵列基板的栅线和数据线的工艺过程中形成在阵列基板上的切割区中。从而在不切割显示面板（1，1'）的情况下检测出显示器的不良，及早检测出不良，并及时修复，避免了不良产品流入后续工艺导致成本浪费。

Description

显示面板及其检测方法 技术领域
本发明的实施例涉及一种显示面板及其检测方法。 背景技术
在 TFT-LCD制造过程中， 显示不良的产生是不可以避免的。 液晶显示 不良主要分二大类别： 非电学性不良和电学性不良。 非电学性不良产生的原 因较多， 与材料和工艺都有关系。 具体而言， 导致非电学性不良的材料包括 液晶、 金属电极层（栅极、 源极及漏极） 、 绝缘层、 取向层和封框胶等等。 在制作以上材料层的工艺中任何步骤出现缺陷都能够产生非电学性不良，如： 水平黑线， 白线， 黑点等。 电学性不良主要产生原因是阵列工艺缺陷， 如亮 线， 亮点， 信号线断路等。
为了快速准确的检查到产品的不良反映生产情况， 在液晶盒（Cell )工 艺生产线中设置液晶盒检测工位。目前的液晶盒工程检测置于 Cell切割工艺 以后，使用 Cell检测设备中的探针单元对液晶盒的切割（ dummy )区（ Dummy 区就是切割时需要废弃的部分，也就是在面板上对后续模组无用的空白空间） 的信号线（栅线、 数据线等） 引线（如： 短路条）进行探针测试。 探针测试 包括对液晶盒的数据线和栅极线的打开测试和颜色测试，仅针对单个液晶盒。 使用探针单元对液晶盒的每个信号输入端口输入显示信号从而检测不良。 但 是在液晶盒未切割前无法实现检测， 如图 1 中虚线框所示的 dummy区， 因 为在切割前 Cell检测设备中的探针单元无法在每个待切割的液晶盒 1 的 dummy区进行探针检测， 即探针无法接触到信号线引线。
现有的液晶盒检测需要彩膜（CF ) 基板和 TFT基板对盒完成后， 液晶 基板切割成形成单个液晶盒后才可以检测， 这样不良信息反馈滞后， 造成后 续的生产成本浪费， 而且传统的切割后检测釆用的接触式的点灯设备投资费 用极高。 发明内容 根据本发明的一个实施例， 提供一种显示面板检测方法， 包括： 通过连 接到发射机的无线信号发射电极分别向预先设置在所述显示面板的切割区的 与栅线连接的栅线无线感应电极及与数据线连接的数据线无线感应电极发射 无线信号， 以分别产生栅线检测信号和数据线检测信号， 从而实现对显示面 板的检测， 其中， 所述栅线无线感应电极和数据线无线感应电极分别在制作 显示面板的阵列基板的栅线和数据线的工艺过程中形成在所述阵列基板上的 所述切割区。
在一个示例中， 通过无线信号发射电极分别向栅线无线感应电极和数据 线无线感应电极发射频率不同的无线信号。
在一个示例中， 所述栅线无线感应电极包括： 第一栅线无线感应子电极 和第二栅线无线感应子电极，所述第一栅线无线感应子电极连接奇数行栅线， 第二栅线无线感应子电极连接偶数行栅线。
在一个示例中，所述数据线无线感应电极包括 N个数据线无线感应子电 极， 相同颜色亚像素的数据线连接到同一个所述数据线无线感应子电极， 不 同颜色亚像素的数据线连接不同的所述数据线无线感应子电极，所述 N为亚 像素颜色总数。
在一个示例中， 通过无线信号发射电极分别向不同的数据线无线感应子 电极发射频率和强度均不同的无线信号。
在一个示例中， 在发射无线信号之前还包括： 在显示面板的彩膜基板的 线信号发射电极。
在一个示例中， 在发射无线信号之前还包括： 在显示面板的阵列基板的 线信号发射电极。
在一个示例中， 在发射无线信号之前还包括： 通过第一透明板将上偏光 片置于所述显示面板的彩膜基板侧， 通过第二透明板将下偏光片置于所述显 示面板的阵列基板侧， 在所述第二透明板上与所述栅线无线感应电极及数据 线无线感应电极对应的位置分别设置所述无线信号发射电极。
在一个示例中， 在发射无线信号之前还包括： 通过第一透明板将上偏光 片置于所述显示面板的彩膜基板侧， 通过第二透明板将下偏光片置于所述显 示面板的阵列基板侧， 在所述第一透明板上与所述栅线无线感应电极及数据 线无线感应电极对应的位置分别设置所述无线信号发射电极。
在一个示例中， 在发射无线信号之前还包括： 将透明板置于所述显示面 板的彩膜基板侧， 在所述透明板上与所述栅线无线感应电极及数据线无线感 应电极对应的位置分别设置所述无线信号发射电极。
根据本发明的另一个实施例提供一种显示面板， 包括彼此对盒的彩膜基 板和阵列基板， 其中，
所述显示面板包括多个显示区域以及所述多个显示区域之间的切割区， 所述阵列基板的切割区内设置有栅线无线感应电极和数据线无线感应电极， 所述栅线无线感应电极与阵列基板上的栅线相连， 所述数据线无线感应电极 与阵列基板上的数据线相连。
在一个示例中， 所述栅线无线感应电极和数据线无线感应电极为磁性材 料。
在一个示例中， 所述栅线无线感应电极和数据线无线感应电极被构造为 将无线电磁信号转化为电信号。
在一个示例中， 所述栅线无线感应电极包括第一栅线无线感应子电极和 第二栅线无线感应子电极，所述第一栅线无线感应子电极与奇数行栅线相连， 所述第二栅线无线感应子电极与偶数行栅线相连。
在一个示例中， 所述数据线无线感应电极包括多个数据线无线感应子电 极， 每个数据线无线感应子电极与驱动不同颜色的亚像素的数据线相连。
本发明实施例提供的显示面板检测方法中，通过在阵列基板工艺进行时， 在每个待切割的液晶盒的切割区内分别注入与栅极和数据线连接的无线感应 材料， 以形成无线感应电极， 该无线感应材料能够吸收无线信号， 并转换成 电压信号， 这样在形成整个面板后， 无需切割， 直接使用无线的方式， 给每 个无线感应电极处施加相应的无线信号， 从而给栅线和数据线进行充电， 观 察显示屏上的现象， 即可实现显示器的电学不良以及非电学不良的检查。 本 发明在液晶盒切割之前， 能够更早的检测到不良， 以便能够及早地处理不良 问题， 避免流入后续工艺中造成成本浪费。 附图说明 为了更清楚地说明本发明实施例的技术方案， 下面将对实施例的附图作 简单地介绍，显而易见地，下面描述中的附图仅仅涉及本发明的一些实施例， 而非对本发明的限制。
图 1为待切割显示面板及其上的切割区示意图；
图 2为本发明实施例的显示面板检测方法中釆用的显示面板的示例图； 图 3为本发明实施例显示面板检测方法检测液晶显示面板的示例图； 图 4为本发明实施例显示面板检测方法检测 OLED显示面板的示例图。 具体实施方式
为使本发明实施例的目的、 技术方案和优点更加清楚， 下面将结合本发 明实施例的附图， 对本发明实施例的技术方案进行清楚、 完整地描述。显然， 所描述的实施例是本发明的一部分实施例， 而不是全部的实施例。 基于所描 述的本发明的实施例， 本领域普通技术人员在无需创造性劳动的前提下所获 得的所有其他实施例， 都属于本发明保护的范围。
实施例中， 以检测液晶显示面板为例进行说明， 通常检测的是阵列基板 和彩膜基板对盒后的液晶盒。 本实施例的检测方法釆用无线感应加电的方式 对液晶盒实现检测。 根据一个实施例的检测方式如下：
向预先设置在液晶盒的切割 （dummy ) 区的与栅线连接的栅线无线感应 电极及与数据线连接的数据线无线感应电极发射无线信号， 以分别产生栅线 检测信号和数据线检测信号， 从而实现对液晶盒的检测。 本实施例中， 栅线 无线感应电极和数据线无线感应电极分别在制作液晶盒的阵列基板的栅线和 数据线的工艺过程中形成在阵列基板上的切割区。
无线感应电极和无线信号发射电极均是一种磁性材料， 类似于铁氧体吸 波材料， 无线信号发射电极向无线感应电极发射磁信号， 无线感应电极能够 利用电磁感应技术将无线磁信号转化为电信号， 以产生相应的电压。 为了避 免栅线和数据线的无线信号相互干扰， 分别向栅线无线感应电极和数据线无 线感应电极发射频率不同的无线信号。
如图 2所示， 本发明实施例的显示面板检测方法中釆用的无线感应电极 排布示意图， 在待切割的液晶盒 1的 dummy区内预先设置了栅线无线感应 电极： 包括第一栅线无线感应子电极 21和第二栅线无线感应子电极 22， 第 一栅线无线感应子电极 21连接奇数行栅线， 第二栅线无线感应子电极 22连 接偶数行栅线。在检测时， 间隔地向第一栅线无线感应子电极 21和第二栅线 无线感应子电极 22发射无线信号。
进一步地， 为了在检测时能够显示不同的颜色， 数据线无线感应电极包 括 N个数据线无线感应子电极，每个数据线无线感应子电极连接驱动相同颜 色亚像素的数据线， 不同的数据线无线感应子电极连接驱动不同颜色亚像素 的数据线， 所述 N为亚像素颜色总数。 通常液晶盒都釆用 RGB颜色模式， 第一数据线无线感应子电极 31、 第二数据线无线感应子电极 32和第三数据 线无线感应子电极 33。第一数据线无线感应子电极 31、第二数据线无线感应 子电极 32和第三数据线无线感应子电极 33可分别连接红、绿和蓝的亚像素。 在检测时分别向第一数据线无线感应子电极 31、第二数据线无线感应子电极 32和第三数据线无线感应子电极 33发射不同频率（避免信号干扰）和不同 强度的无线信号， 以产生不同的电压。
当然，栅线无线感应电极和数据线无线感应电极的个数和排布不限于此， 只要能分别感应无线信号并将无线信号转换成电信号施加至栅线和数据线即 可。 例如， 栅线无线感应电极也可以只有一个栅线无线感应子电极（连接所 有栅线） ， 数据线无线感应电极只有一个数据线无线感应子电极（连接所有 数据线）； 或者数据线无线感应电极包括 M (数据线条数）个数据线无线感 应子电极， 每条数据线均连接不同的数据线无线感应子电极。
对于液晶盒的检测， 如图 3所示， 在液晶盒 1下方设置背光源 8， 背光 源 8的上方还设有下偏光片， 液晶盒上方设有上偏光片， 以便能够观察到显 示的效果。 上偏光片放置在第一透明板 5上， 下偏光片放置在第二透明板 4 上。 由于是流水线作业， 每个未切割的液晶盒 1被运送到第一透明板 5和第 二透明板 4之间进行检测。
在上述实施例中， 承载偏光片的透明板 4和 5分别设置在液晶盒的上下 两侧。 然而， 在根据本发明的其他实施例中， 承载偏光片的透明板 4和 5可 以分别设置在阵列基板和彩膜基板的面向液晶层的表面上。
在发射无线信号之前还需要将无线信号发射电极 6设置在合适的位置， 理论上， 无线信号发射电极 6可以设置在任何能够向栅线无线感应电极和数 据线无线感应电极发射无线信号的位置。 为了便于描述， 对于彩膜基板和阵 列基板对盒形成的液晶盒， 将彩膜基板的一侧定义为观看侧。 本实施例中， 为了避免釆用单独的支架来承载无线信号发射电极 6， 可以在液晶盒 1的彩 置分别设置无线信号发射电极 6 (例如， 无线感应电极与无线信号发射电极 彼此相对） ； 也可以在阵列基板背离观看侧表面的与栅线无线感应电极及数 据线无线感应电极对应位置分别设置无线信号发射电极 6 (例如， 无线感应 电极与无线信号发射电极彼此相对） ； 也可以在第二透明板 4上的与栅线无 线感应电极及数据线无线感应电极对应位置分别设置无线信号发射电极 6; 也可以如图 3中所示， 将无线信号发射电极 6设置在第一透明板 5对应液晶 盒 1的切割区的位置， 即， 与栅线无线感应电极及数据线无线感应电极对应 (例如， 相对） 的位置。 开启与无线信号发射电极 6连接的发射机向无线感 应电极发射无线信号。 无线信号发射电极 6可以通过导线连接到发射机， 但 导线通常不透明， 在检测过程中不方便观察。 备选地， 可通过在承载无线信 号发射电极 6的基板的 dummy区形成若干透明引线电极， 使每条透明引线 电极的一端与一个无线信号发射电极 6相连， 且每条透明引线电极都连接不 同的无线信号发射电极 6， 另一端连接至承载无线信号发射电极 6的基板的 边缘， 以方便连接发射机。
虽然以上实施例中在彩膜基板的面向观看侧的表面形成无线信号发射电 极， 但在根据本发明的其他实施例中， 也可以在彩膜基板的内侧表面 （即， 面向液晶层的表面）上形成无线信号发射电极。 同样， 也可以在阵列基板的 内侧表面 （即， 面向液晶层的表面）上形成无线信号发射电极。
本实施例的检测方法除了加电方式与现有技术不同外， 例如， 其它检测 步骤可以与现有技术类似（如： 根据不同显示效果判断的不良类型的方法和 现有技术相同） ， 此处不再赘述。 本实施例的检测方法能够在不切割液晶盒 的情况下实现检测， 及早检测出问题， 并及时修复， 避免了不良产品流入后 续工艺， 导致成本浪费。
本发明的显示面板检测方法不但可以适用于液晶盒， 也可用于检测 OLED显示面板。 如图 4所示， 由于 OLED显示面板 1' 不需要背光源， 也 不需要偏光片， 因此将透明板 7 (作为承载无线信号发射电极 6的支架）置 于所述 OLED显示面板 1' 上方或下方， 透明板 7对应切割区的位置设置有 根据本发明的实施例还提供一种显示面板， 包括彼此对盒的彩膜基板和 阵列基板， 其中， 所述显示面板包括多个显示区域以及所述多个显示区域之 间的切割区， 所述阵列基板的切割区内设置有栅线无线感应电极和数据线无 线感应电极， 所述栅线无线感应电极与阵列基板上的栅线相连， 所述数据线 无线感应电极与阵列基板上的数据线相连。
所述栅线无线感应电极和数据线无线感应电极为磁性材料。 例如， 所述 栅线无线感应电极和数据线无线感应电极被构造为将无线电磁信号转化为电 信号。
例如， 所述栅线无线感应电极包括第一栅线无线感应子电极和第二栅线 无线感应子电极， 所述第一栅线无线感应子电极与奇数行栅线相连， 所述第 二栅线无线感应子电极与偶数行栅线相连。
例如， 所述数据线无线感应电极包括多个数据线无线感应子电极， 每个 数据线无线感应子电极与驱动不同颜色的亚像素的数据线相连。
以上所述仅是本发明的示范性实施方式， 而非用于限制本发明的保护范 围， 本发明的保护范围由所附的权利要求确定。
本申请要求于 2013年 10月 22日递交的中国专利申请第 201310499455.8 号的优先权， 在此全文引用上述中国专利申请公开的内容以作为本申请的一 部分。

Claims

权利要求书
1、一种显示面板检测方法， 包括： 通过连接到发射机的无线信号发射电 极分别向预先设置在所述显示面板的切割区的与栅线连接的栅线无线感应电 极及与数据线连接的数据线无线感应电极发射无线信号， 以分别产生栅线检 测信号和数据线检测信号， 从而实现对显示面板的检测， 其中， 所述栅线无 线感应电极和数据线无线感应电极分别在制作显示面板的阵列基板的栅线和 数据线的工艺过程中形成在所述阵列基板上的所述切割区。
2、如权利要求 1所述的显示面板检测方法， 其中， 通过无线信号发射电 极分别向栅线无线感应电极和数据线无线感应电极发射频率不同的无线信 号。
3、如权利要求 1或 2所述的显示面板检测方法， 其中， 所述栅线无线感 应电极包括： 第一栅线无线感应子电极和第二栅线无线感应子电极， 所述第 一栅线无线感应子电极连接奇数行栅线， 第二栅线无线感应子电极连接偶数 行栅线。
4、 如权利要求 1~3 中任一项所述的显示面板检测方法， 其中， 所述数 线连接到同一个所述数据线无线感应子电极， 不同颜色亚像素的数据线连接 不同的所述数据线无线感应子电极， 所述 N为亚像素颜色总数。
5、 如权利要求 1~4 中任一项所述的显示面板检测方法， 其中， 通过无 线信号发射电极分别向不同的数据线无线感应子电极发射频率和强度均不同 的无线信号。
6、 如权利要求 1~5 中任一项所述的显示面板检测方法， 其中， 在发射 无线信号之前还包括： 在显示面板的彩膜基板的与所述栅线无线感应电极及 数据线无线感应电极对应的位置分别设置所述无线信号发射电极。
7、 如权利要求 1~5 中任一项所述的显示面板检测方法， 其中， 在发射 无线信号之前还包括： 在显示面板的阵列基板的与所述栅线无线感应电极及 数据线无线感应电极对应的位置分别设置所述无线信号发射电极。
8、 如权利要求 1~5 中任一项所述的显示面板检测方法， 其中， 在发射 无线信号之前还包括： 通过第一透明板将上偏光片置于所述显示面板的彩膜 基板侧， 通过第二透明板将下偏光片置于所述显示面板的阵列基板侧， 在所 分别设置所述无线信号发射电极。
9、 如权利要求 1~5 中任一项所述的显示面板检测方法， 其中， 在发射 无线信号之前还包括： 通过第一透明板将上偏光片置于所述显示面板的彩膜 基板侧， 通过第二透明板将下偏光片置于所述显示面板的阵列基板侧， 在所 分别设置所述无线信号发射电极。
10、 如权利要求 1~5中任一项所述的显示面板检测方法， 其中， 在发射 无线信号之前还包括： 将透明板置于所述显示面板的彩膜基板侧， 在所述透 所述无线信号发射电极。
11、 一种显示面板， 包括彼此对盒的彩膜基板和阵列基板， 其中， 所述显示面板包括多个显示区域以及所述多个显示区域之间的切割区， 所述阵列基板的切割区内设置有栅线无线感应电极和数据线无线感应电极， 所述栅线无线感应电极与阵列基板上的栅线相连， 所述数据线无线感应电极 与阵列基板上的数据线相连。
12、 根据权利要求 11所述的显示面板， 其中，
所述栅线无线感应电极和数据线无线感应电极为磁性材料。
13、 根据权利要求 12所述的显示面板， 其中，
所述栅线无线感应电极和数据线无线感应电极被构造为将无线电磁信号 转化为电信号。
14、 根据权利要求 11~13中任一项所述的显示面板， 其中， 所述栅线无 线感应电极包括第一栅线无线感应子电极和第二栅线无线感应子电极， 所述 第一栅线无线感应子电极与奇数行栅线相连， 所述第二栅线无线感应子电极 与偶数行栅线相连。
15、 根据权利要求 11~14中任一项所述的显示面板， 其中， 所述数据线 无线感应电极包括多个数据线无线感应子电极， 每个数据线无线感应子电极 与驱动不同颜色的亚像素的数据线相连。
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