WO2015106414A1 - 液晶显示器及液晶显示器检测方法和电子装置 - Google Patents
液晶显示器及液晶显示器检测方法和电子装置 Download PDFInfo
- Publication number
- WO2015106414A1 WO2015106414A1 PCT/CN2014/070698 CN2014070698W WO2015106414A1 WO 2015106414 A1 WO2015106414 A1 WO 2015106414A1 CN 2014070698 W CN2014070698 W CN 2014070698W WO 2015106414 A1 WO2015106414 A1 WO 2015106414A1
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- WIPO (PCT)
- Prior art keywords
- liquid crystal
- test line
- crystal display
- glass substrate
- alignment film
- Prior art date
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 94
- 238000001514 detection method Methods 0.000 title claims abstract description 26
- 238000012360 testing method Methods 0.000 claims abstract description 97
- 239000011521 glass Substances 0.000 claims abstract description 66
- 239000000758 substrate Substances 0.000 claims abstract description 64
- 239000010410 layer Substances 0.000 claims description 95
- 238000000034 method Methods 0.000 claims description 18
- 230000008021 deposition Effects 0.000 claims description 10
- 239000011241 protective layer Substances 0.000 claims description 10
- 238000001704 evaporation Methods 0.000 claims description 5
- 230000008020 evaporation Effects 0.000 claims description 5
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical group [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 239000003292 glue Substances 0.000 claims 2
- 230000037361 pathway Effects 0.000 abstract 2
- 239000010408 film Substances 0.000 description 33
- 238000000151 deposition Methods 0.000 description 9
- 238000005229 chemical vapour deposition Methods 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 238000004070 electrodeposition Methods 0.000 description 2
- 238000001755 magnetron sputter deposition Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 235000013372 meat Nutrition 0.000 description 2
- 238000004544 sputter deposition Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000000386 microscopy Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 238000011179 visual inspection Methods 0.000 description 1
Classifications
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- 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
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- 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
- G02F1/13306—Circuit arrangements or driving methods for the control of single liquid crystal cells
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- 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
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- G02F1/1333—Constructional arrangements; Manufacturing methods
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- G02F1/133509—Filters, e.g. light shielding masks
- G02F1/133514—Colour filters
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- G—PHYSICS
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- 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
- G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
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- 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
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- G—PHYSICS
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- 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
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- 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
- G02F1/133302—Rigid substrates, e.g. inorganic substrates
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- 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
- G02F1/136295—Materials; Compositions; Manufacture processes
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- 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
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- G02F1/1368—Active matrix addressed cells in which the switching element is a three-electrode device
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- 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
- G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
- G02F2201/12—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00 electrode
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- G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
- G02F2201/12—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00 electrode
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- G02F2202/00—Materials and properties
- G02F2202/28—Adhesive materials or arrangements
Definitions
- Liquid crystal display and liquid crystal display detection method and electronic device Liquid crystal display and liquid crystal display detection method and electronic device
- the present invention relates to a liquid crystal display (LCD), and more particularly to an LCD and LCD detecting method having an LCD glass crack detecting architecture and an electronic device including the LCD.
- LCD liquid crystal display
- Embodiments of the present invention provide an LCD and LCD detection method and an electronic device including the LCD for automatically detecting whether a LCD has a crack.
- the present invention provides a liquid crystal display including a glass substrate and a driving chip, the driving chip being disposed on the glass substrate for driving the liquid crystal display, the liquid crystal display further comprising a test line, a test line is formed in the glass substrate and extends near an edge of the glass substrate, the driving chip includes an input pin and an output pin, and two ends of the test line are respectively connected to the input pin and the The output pins form a closed loop.
- the test line includes at least two single lines, and the at least two single lines are connected in parallel between the input pin and the output pin.
- the number of the input pins is one
- the number of the output pins is also one
- one ends of the at least two single wires are combined and connected to the input pin, and the other end of the at least two single wires And connected to the output pin.
- the glass substrate comprises an upper layer board and a lower layer board
- the upper layer board comprises a laminated color film, a color film protective layer and an upper liquid crystal alignment film
- the lower layer board comprises a laminated common electrode layer, a pixel electrode layer and a liquid crystal alignment film
- the test line is formed at an edge of the common electrode layer or formed at an edge of the pixel electrode layer
- the test line is electrically connected by a trace on the lower layer board To the driver chip.
- the glass substrate comprises an upper layer board and a lower layer board
- the upper layer board comprises a color film, a color film protective layer and an upper liquid crystal alignment film which are laminated
- the lower layer board comprises a common electrode layer, a pixel electrode layer and a laminated layer a lower liquid crystal alignment film
- the test line is formed on the upper layer and located at a periphery of the upper liquid crystal alignment film
- the liquid crystal display further includes a conductive sheet, the conductive sheet is formed on the lower layer and located at the At the periphery of the lower liquid crystal alignment film
- the test line is electrically connected to the conductive sheet through a conductive paste
- the test line is electrically connected to the driving chip through a trace on the lower layer board.
- the present invention also provides an electronic device, comprising a CPU and a flexible circuit board, the electronic device further comprising the liquid crystal display according to any one of the above, wherein the liquid crystal display and the CPU are electrically connected through the flexible circuit board.
- the CPU is used to determine whether the test line is in the path.
- the present invention also provides a liquid crystal display detection method, the liquid crystal display detection method comprising: forming a test line on a glass substrate, the test line extending near an edge of the glass substrate; The two ends are respectively connected to the input pin and the output pin of the driving chip, so that the test line forms a closed loop; a voltage is input at an input pin end of the driving chip, and the voltage is measured at the output pin end The current value of the closed loop or the impedance value of the closed loop is measured; the current value or the impedance value is fed back to the CPU of the electronic device, and the CPU is configured to determine whether the test line is in a path, thereby determining the location Whether the glass substrate has cracks.
- the process of forming the test line on the glass substrate comprises connecting at least two single wires in parallel between the input pin I and the output pin I.
- one end of the at least two single wires is connected and connected to the input pin, the other ends of the at least two single wires are combined and connected to the output pin, and the number of the input pins is one The number of the output pins is also one.
- the glass substrate comprises an upper layer board and a lower layer board
- the upper layer board comprises a laminated color film, a color film protective layer and an upper liquid crystal alignment film
- the lower layer board comprises a laminated common electrode layer, a pixel electrode layer and a liquid crystal alignment film
- the test line is formed at an edge of the common electrode layer or formed at an edge of the pixel electrode layer
- the test line is electrically connected to the ground through a trace on the lower layer board
- the driver chip is a laminated common electrode layer, a pixel electrode layer and a liquid crystal alignment film
- the glass substrate comprises an upper layer board and a lower layer board
- the upper layer board comprises a laminated color film, a color film protective layer and an upper liquid crystal alignment film
- the lower layer board comprises a laminated common electrode layer, a pixel electrode layer and a liquid crystal alignment film
- the test line is formed on the upper layer, and is located on the upper liquid crystal a periphery of the alignment film
- the liquid crystal display further comprising a conductive sheet formed on the lower layer and located at a periphery of the lower liquid crystal alignment film, electrically connecting the test line to the conductive sheet through a conductive paste
- the test line is electrically connected to the driver chip by a trace on the lower layer board.
- test line is formed on the glass substrate by a method of deposition or evaporation, and the test line is made of indium tin oxide.
- the liquid crystal display, the electronic device and the liquid crystal display detection method provided by the present invention can detect whether the glass substrate has cracks by detecting whether the test line has a path, and can realize automatic detection without disassembling, thereby improving the detection efficiency.
- FIG. 1 is a schematic diagram of an electronic device and a liquid crystal display according to an embodiment of the present invention.
- FIG. 2 is a schematic view of a liquid crystal display according to an embodiment of the present invention.
- FIG. 3 is an enlarged schematic view showing a first embodiment of a glass substrate of a liquid crystal display of the present invention.
- 4 is an enlarged schematic view showing a second embodiment of a glass substrate of a liquid crystal display of the present invention.
- Fig. 5 is an enlarged schematic view showing a third embodiment of a glass substrate of a liquid crystal display of the present invention.
- the present invention relates to a liquid crystal display 10 and an electronic device 200 using the same.
- the electronic device 200 includes a CPU 30 , a flexible circuit board 20 , and a liquid crystal display 10 .
- the flexible circuit board 20 is electrically connected to the Between the liquid crystal display 10 and the CPU 30, the present invention provides a test line 16 on the glass substrate 12 of the liquid crystal display 10, and the CPU 30 of the electronic device 200 determines whether the test line 16 of the liquid crystal display 10 is in a path, and further determines Liquid crystal display 10 Whether or not the glass substrate 12 has cracks.
- the liquid crystal display 10 includes a glass substrate 12 and a driving chip 14.
- the driving chip 14 is disposed on the glass substrate 12 for driving display of the liquid crystal display 10.
- the liquid crystal display 10 further includes a test line 16, the test A line 16 is formed in the glass substrate 12 and extends adjacent to an edge of the glass substrate 12.
- the glass substrate 12 is formed by a deposition or evaporation process, and the method of deposition includes magnetron sputtering low temperature deposition, electrochemical deposition, sputtering deposition, chemical vapor deposition, and the like.
- the test line 16 is formed integrally with the glass substrate 12. If a crack occurs in the glass substrate 12, cracks usually appear at the edge of the glass substrate 12.
- the test line 16 is formed at the edge of the glass substrate 12 and continuously extends into a ring structure if the glass substrate 12 The edge cracks and the test line 16 breaks.
- the material of the test wire 16 is indium tin oxide (ITO).
- the driving chip 14 includes an input pin and an output pin, and two ends of the test line 16 are respectively connected to the input pin and the output pin to form a closed loop, so that the test line 16 is detected by Whether or not the glass substrate 12 is cracked can be judged by the passage.
- the liquid crystal display can be connected to the testing device to detect whether the test line 16 is in a path, or can be directly detected by an electronic device mounted with the liquid crystal display, for example, a CPU of the electronic device, or an electronic device. Built-in detection software, etc.
- the driving chip 14 of the liquid crystal display 10 is used to drive the liquid crystal display 10 to display a pattern, but the driving chip 14 includes some idle pins.
- the present invention utilizes the idle pin of the driving chip 14 as an input pin and output of the connection test line 16. Pins, during production, only test leads 16 need to be formed on the edge of the glass substrate 12, without additional cost.
- the liquid crystal display 10 and the electronic device 200 provided by the present invention can detect whether the glass substrate 12 has cracks by detecting whether the test line 16 has a path, and can realize automatic detection without disassembling. If the glass substrate 12 has cracks, the test line 16 is broken, and the driving chip is driven. 14: The current value of the closed loop measured at the output pin of the driving chip 14 or the impedance value of the closed loop is fed back to the CPU 30, and the electronic device 200 test software determines whether the glass substrate 12 has cracks, thereby improving detection. effectiveness.
- the number of test leads 16 of the present invention may be one or more for the same purpose.
- the test line 16 includes at least two single lines 162 that are connected in parallel between the input pin and the output pin. As shown in FIG. 1, in the present embodiment, the test line 16 includes three single lines 162. The design of at least two single wires 162 in parallel can better cover the test range, and at the same time, can eliminate the single process line caused by poor process or foreign matter in the manufacturing process. 16 open circuit, causing misjudgment of the glass substrate 12 cracking.
- the number of the input pins is one, and the number of the output pins is also one.
- One ends of the at least two single wires 162 are combined and connected to the input pins, the at least two The other end of the single line 162 is coupled and connected to the output pin. That is to say, in this embodiment, both ends of at least two single lines 162 are combined into one, so that the test line 16 only needs two pins of the driving chip 14, that is, one input pin and one output pin. Saving the use of the pins of the driver chip 14 provides space for the electronic device 200 to add other functions.
- the glass substrate 12 is a double-layer glass.
- the glass substrate 12 includes an upper layer 11 and a lower layer 13 , wherein the upper layer 11 is a color film 112 and the substrate is located on the electronic device.
- the surface layer of 200, the lower layer 13 is a thin film transistor switch circuit substrate (TFT circuit glass substrate).
- the upper layer 11 includes a color film 112, a color film protective layer 114 and an upper liquid crystal alignment film 116 which are laminated
- the lower layer 13 includes a common electrode layer 132, a signal line layer 137, a pixel electrode layer 134 and a lower layer. Liquid crystal alignment film 136.
- the test line 16 is formed at an edge of the pixel electrode layer 134, and the test line 16 is electrically connected to the trace on the lower layer board 13 to The drive chip 14 is.
- the test line 16 of the present embodiment is for detecting the presence or absence of cracks in the lower deck 13.
- test line 16 is formed at an edge of the common electrode layer 132, and the test line 16 is electrically connected to the trace on the lower layer board 13 to The drive chip 14 is.
- the test line 16 of the present embodiment is for detecting the presence or absence of cracks in the lower deck 13.
- the test line 16 is formed on the upper layer 11 and is located at the periphery of the upper liquid crystal alignment film 116.
- the liquid crystal display 10 further includes a conductive sheet 18, The conductive sheet 18 is formed on the lower layer 13 and located at the periphery of the lower liquid crystal alignment film 136, and the test wire 16 is electrically connected to the conductive sheet 18 through the conductive paste 19, on the lower layer 13
- the traces electrically connect the test leads 16 to the driver chip 14.
- the test line 16 of the present embodiment is for detecting the presence or absence of cracks in the upper layer 11.
- the third embodiment and the first embodiment may be used at the same time, or the third embodiment and the second embodiment described above may be used at the same time.
- the present invention also provides a method for detecting a liquid crystal display 10, wherein the method for detecting a liquid crystal display 10 includes: forming a test line 16 on a glass substrate 12, the test line 16 being close to the The edge of the glass substrate 12 extends; the two ends of the test line 16 are respectively connected to the input pin and the output pin of the driving chip 14, such that the test line 16 forms a closed loop; the input at the driving chip 14 Inputting a voltage at a pin terminal, and measuring a current value of the closed loop or measuring an impedance value of the closed loop at the output pin end; feeding the current value or the impedance value to the electronic device 200
- the CPU 30 is configured to determine whether the test line 16 of the liquid crystal display 10 is in a path, thereby determining whether the glass substrate 12 has cracks.
- the process of forming test lines 16 on glass substrate 12 includes connecting at least two single lines 162 in parallel between the input pins and the output pins.
- One end of the at least two single wires 162 is joined and connected to the input pin, the other ends of the at least two single wires 162 are combined and connected to the output pin, and the number of the input pins is one The number of the output pins is also one.
- the glass substrate 12 includes an upper layer plate 11 including a color film 112, a color film protective layer 114, and an upper liquid crystal alignment film 116, and a lower layer plate 13 including a laminated common electrode. a layer 132, a pixel electrode layer 134 and a lower liquid crystal alignment film 136, the test line 16 being formed at an edge of the common electrode layer 132 or formed at an edge of the pixel electrode layer 134, through the lower layer plate 13
- the upper trace electrically connects the test line 16 to the driver chip 14.
- the test line 16 is formed by deposition or evaporation on the common electrode layer 132 or the pixel electrode layer 134 of the lower layer 13, and the common electrode layer or the pixel electrode is formed on the lower layer 13, and only the common electrode layer 132 or the pixel needs to be modified.
- the mask design of the electrode layer 134 does not require an increase in material cost and equipment occupation cost. In the present embodiment, crack detection is performed for the lower deck 13.
- the crack detecting method for the upper layer 11 is as follows.
- the test line 16 is formed on the upper layer 11 and located at the periphery of the upper liquid crystal alignment film 116.
- the liquid crystal display 10 further includes a conductive sheet 18, the conductive A sheet 18 is formed on the lower layer 13 and located at the periphery of the lower liquid crystal alignment film 136, and the test wire 16 is electrically connected to the conductive sheet 18 through the conductive paste 19, and passes through the lower layer 13 A line electrically connects the test line 16 to the driver chip 14.
- the test line 16 is formed on the glass substrate by deposition or evaporation, and the test line 16 is made of indium tin oxide.
- Methods of deposition include magnetron sputtering low temperature deposition, electrochemical deposition, sputter deposition, chemical vapor deposition, and the like.
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- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
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Abstract
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Priority Applications (6)
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PCT/CN2014/070698 WO2015106414A1 (zh) | 2014-01-16 | 2014-01-16 | 液晶显示器及液晶显示器检测方法和电子装置 |
KR1020167001000A KR20160019954A (ko) | 2014-01-16 | 2014-01-16 | 액정 디스플레이, 액정 디스플레이에 검사 방법, 및 전자 장치 |
US14/901,868 US10082689B2 (en) | 2014-01-16 | 2014-01-16 | Liquid crystal display, liquid crystal display testing method, and electronic apparatus |
EP14878610.6A EP3001242B1 (en) | 2014-01-16 | 2014-01-16 | Liquid crystal display, detection method for liquid crystal display and electronic device |
CN201480004572.5A CN105122125B (zh) | 2014-01-16 | 2014-01-16 | 液晶显示器及液晶显示器检测方法和电子装置 |
JP2016539396A JP6188953B2 (ja) | 2014-01-16 | 2014-01-16 | 液晶ディスプレイ、液晶ディスプレイテスト方法及び電子装置 |
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PCT/CN2014/070698 WO2015106414A1 (zh) | 2014-01-16 | 2014-01-16 | 液晶显示器及液晶显示器检测方法和电子装置 |
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US (1) | US10082689B2 (zh) |
EP (1) | EP3001242B1 (zh) |
JP (1) | JP6188953B2 (zh) |
KR (1) | KR20160019954A (zh) |
CN (1) | CN105122125B (zh) |
WO (1) | WO2015106414A1 (zh) |
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WO2021197169A1 (zh) * | 2020-03-31 | 2021-10-07 | 荣耀终端有限公司 | 显示屏、电子设备及裂纹检测方法 |
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KR102351323B1 (ko) | 2017-03-28 | 2022-01-17 | 삼성전자주식회사 | 디스플레이의 균열을 감지하기 위한 회로 및 이를 포함하는 전자 장치 |
KR102487600B1 (ko) | 2017-12-19 | 2023-01-13 | 삼성디스플레이 주식회사 | 입력감지부 및 이를 포함하는 표시장치 |
KR102531042B1 (ko) * | 2018-04-05 | 2023-05-15 | 삼성전자 주식회사 | 디스플레이에 형성된 개구에 인접한 영역에서 발생된 크랙을 검출하기 위한 배선을 포함하는 디스플레이 장치 및 그를 포함하는 전자 장치 |
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US11320679B2 (en) | 2020-05-21 | 2022-05-03 | Sharp Kabushiki Kaisha | Display device with detection circuit |
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CN105122125A (zh) | 2015-12-02 |
US10082689B2 (en) | 2018-09-25 |
KR20160019954A (ko) | 2016-02-22 |
EP3001242B1 (en) | 2020-08-12 |
EP3001242A1 (en) | 2016-03-30 |
JP6188953B2 (ja) | 2017-08-30 |
US20160370613A1 (en) | 2016-12-22 |
EP3001242A4 (en) | 2016-06-22 |
JP2016529562A (ja) | 2016-09-23 |
CN105122125B (zh) | 2018-03-09 |
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