CN112882264A - Device and method for measuring liquid crystal filling amount of display and display device - Google Patents
Device and method for measuring liquid crystal filling amount of display and display device Download PDFInfo
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- CN112882264A CN112882264A CN202110412486.XA CN202110412486A CN112882264A CN 112882264 A CN112882264 A CN 112882264A CN 202110412486 A CN202110412486 A CN 202110412486A CN 112882264 A CN112882264 A CN 112882264A
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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
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1341—Filling or closing of cells
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- Mathematical Physics (AREA)
- Liquid Crystal (AREA)
Abstract
The embodiment of the invention provides a device and a method for measuring the liquid crystal filling amount of a display and a display device, wherein the device for measuring the liquid crystal filling amount of the display comprises a measuring unit and a processing unit; the measuring unit comprises a water tank and a water level measuring device arranged in the water tank, and the water tank is used for accommodating a film layer structure of the liquid crystal display panel in a display area; the water level measuring device is used for measuring the water level value of liquid in the water tank after the water tank contains the film layer structure; the processing unit is connected with the measuring unit, the processing unit obtains the water level change value by comparing the water level value obtained by measurement of the measuring unit with a preset water level value, and then obtains the volume of the film layer structure according to the water level change value; the accuracy of measuring the liquid crystal filling amount of the display is improved.
Description
Technical Field
The invention relates to the technical field of display, in particular to a device and a method for measuring liquid crystal filling amount of a display and a display device.
Background
With the continuous innovation of liquid crystal screen technology and process, the size of the liquid crystal mother plate glass is increased generation by generation, the size is developed to 2290mm x3370mm, and the liquid crystal screen of the next generation is expected to be increased continuously, so that higher requirements are provided for the manufacturing process. The manufacturing process of the TIT-LCD liquid crystal screen is to attach two pieces of mother glass sprayed with uniform padding materials, the distance between the two pieces of mother glass is 3-5 mu m, the two pieces of mother glass are used for filling liquid crystal materials in a vacuum state, and the filling amount of liquid crystal directly influences the picture quality of the liquid crystal screen. When the filling amount is too large, the liquid crystal screen becomes yellow or white; when the filling amount is too small, the liquid crystal screen is abnormal.
The general process requires that the liquid crystal filling amount is below 1% of the theoretical value. The filling amount of the liquid crystal is in direct proportion to the thickness of the liquid crystal box, and is related to factors such as the difference of the in-plane sections and the like. Therefore, in order to improve the qualification rate of finished products and reduce the production cost, the liquid crystal box needs to be detected in real time to obtain specific parameters, so as to provide parameter basis for the liquid crystal filling amount. The method for measuring the liquid crystal filling amount at present comprises the steps of firstly calculating the central liquid crystal filling amount according to a product target CG (namely a box gap), then setting ranges of 6% -10% respectively upwards and downwards based on the central liquid crystal filling amount, selecting a liquid crystal mother plate in each range, putting the liquid crystal mother plate into a high-low temperature environment after box forming, and finally taking the liquid crystal filling amount corresponding to 1% downwards of a gravity Mura as an upper limit of a safety range and taking the liquid crystal filling amount corresponding to 1% upwards of a vacuum Bubble as a lower limit of the safety range.
At present, the method can not determine whether the liquid crystal charging safety range of the product can meet the quality requirement of an actual liquid crystal screen, the quality requirement can be met only by subsequently changing the design and adjusting the manufacturing process, and the method needs to be repeated for many times, thereby causing huge waste on resources and productivity.
Disclosure of Invention
The embodiment of the invention provides a device and a method for measuring the liquid crystal filling amount of a display and a display device, and improves the accuracy of measuring the liquid crystal filling amount of the display.
In a first aspect, an embodiment of the present invention provides an apparatus for measuring a liquid crystal filling amount of a display, including a measuring unit and a processing unit;
the measuring unit comprises a water tank and a water level measuring device arranged in the water tank, and the water tank is used for accommodating a film layer structure of the liquid crystal display panel in a display area; the water level measuring device is used for measuring the water level value of liquid in the water tank after the water tank contains the film layer structure;
the processing unit is connected with the measuring unit, and the processing unit obtains the volume of the film layer structure according to the comparison between the water level value obtained by the measurement of the measuring unit and a preset water level value.
In an exemplary embodiment, the water tank includes a cover plate and a containing cavity disposed in the cover plate, and the containing cavity is provided with an opening for the film layer structure to enter and exit.
In an exemplary embodiment, the cover plate is provided with at least two accommodating cavities, the liquid crystal display panel includes at least two display areas and film layer structures arranged on the display areas, and the accommodating cavities correspond to the film layer structures on the display areas one to one.
In an exemplary embodiment, at least two receiving cavities with different volumes are arranged in the cover plate.
In an exemplary embodiment, the measuring unit further includes a water injection device, the water injection device includes a water injection pipeline and a first spray head disposed on the water injection pipeline, the water tank is provided with a water inlet, and the first spray head is disposed corresponding to the water inlet.
In an exemplary embodiment, the liquid crystal display device further includes a second spray head, the second spray head is used for cleaning the liquid crystal display panel measured by the measuring unit, and the second spray head and the first spray head share the water injection pipeline.
In an exemplary embodiment, the measurement unit further includes a lifting structure, and the lifting structure is connected to the water tank and can drive the water tank to move along a film structure direction close to the liquid crystal display panel in the display area.
In an exemplary embodiment, the measuring unit further includes a conveying mechanism, the conveying mechanism is located on one side of the water tank, and the conveying mechanism can drive the liquid crystal display panel to move, so that a film layer structure of the liquid crystal display panel in a display area is arranged corresponding to the water tank.
In a second aspect, an embodiment of the present invention provides a method for measuring a liquid crystal filling amount of a display, including:
measuring the volume of a film layer structure of the liquid crystal display panel in a display area;
obtaining the actual volume of the liquid crystal box thickness according to the difference between the set volume of the liquid crystal box thickness and the volume of the film layer structure, and further obtaining the liquid crystal filling amount of the display; the volume of the set liquid crystal box thickness is the product of the area of the display area of the liquid crystal display panel and the set liquid crystal box thickness.
In an exemplary embodiment, measuring a volume of a film layer structure of a liquid crystal display panel in a display area includes:
and immersing the film layer structure of the liquid crystal display panel in the display area into a water tank, and measuring the water level change of liquid in the water tank to obtain the volume of the film layer structure.
In a third aspect, embodiments of the present invention provide a display device, which is prepared by the method for measuring the liquid crystal filling amount of the display device as described in any one of the above.
The invention provides a device and a method for measuring liquid crystal filling amount of a display and a display device.
Of course, not all of the advantages described above need to be achieved at the same time in the practice of any one product or method of the invention. Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the embodiments of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the example serve to explain the principles of the invention and not to limit the invention. The shapes and sizes of the various elements in the drawings are not to scale and are merely intended to illustrate the invention.
FIG. 1 is a schematic structural diagram of a measuring unit in an apparatus for measuring a liquid crystal filling amount of a display according to an embodiment of the present disclosure;
FIG. 2 is an enlarged view of a measuring unit in the device for measuring the filling amount of liquid crystal in a display according to an embodiment of the present disclosure;
fig. 3 is a cross-sectional view of a measuring unit in the device for measuring the filling amount of liquid crystal in a display according to the embodiment of the present disclosure.
Detailed Description
The following detailed description of embodiments of the invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.
Liquid Crystal Displays (LCD) have become the mainstream products of Display devices. The liquid crystal display mainly comprises liquid crystal display panels which are oppositely arranged and liquid crystal arranged between the liquid crystal display panels. The liquid crystal display panel can be a color film substrate or an array substrate. The array substrate comprises a plurality of Thin Film Transistors (TFT) and electrodes connected with the TFT and used for controlling the liquid crystal state; liquid crystal deflection is used for modulating backlight emergent light; the color film substrate comprises a plurality of color film layers (including RGB) for colorizing the emergent light and finally realizing display. When the liquid crystal display panel is a color film substrate, the film structure of the liquid crystal display panel in the display area comprises a color film. When the liquid crystal display panel is an array substrate, the film structure of the liquid crystal display panel in the display area includes a thin film transistor, an electrode and a spacer film layer.
The production process of the liquid crystal display comprises the production of a front-stage array substrate (TFT process) and a color film substrate (CF process), the box alignment (CELL) of a middle-stage liquid crystal display panel and the Module Assembly (Module Assembly) of a rear stage, wherein the box alignment stage mainly combines the array substrate and the color film substrate, and liquid crystal is filled between the array substrate and the color film substrate. The filling amount of the liquid crystal plays a decisive role in the display quality of the display device.
The embodiment of the invention provides a device for measuring the liquid crystal filling amount of a display, which comprises a measuring unit and a processing unit, wherein the measuring unit is used for measuring the liquid crystal filling amount of the display;
the measuring unit comprises a water tank and a water level measuring device arranged in the water tank, and the water tank is used for accommodating a film layer structure of the liquid crystal display panel in a display area; the water level measuring device is used for measuring the water level value of liquid in the water tank after the water tank contains the film layer structure;
the processing unit is connected with the measuring unit, and the processing unit obtains the volume of the film layer structure according to the comparison between the water level value obtained by the measurement of the measuring unit and a preset water level value.
The device for measuring the liquid crystal filling amount of the display in the embodiment of the invention obtains the water level value of the film layer structure of the liquid crystal display panel in the display area in the water tank through the measurement of the measurement unit, obtains the water level change value according to the water level value through the processing unit, further obtains the volume of the film layer structure, calculates the liquid crystal filling amount of the liquid crystal display panel after the liquid crystal display panel is aligned with the box, and improves the accuracy of measuring the liquid crystal filling amount of the liquid crystal display.
FIG. 1 is a schematic structural diagram of a measuring unit in an apparatus for measuring a liquid crystal filling amount of a display according to an embodiment of the present disclosure; fig. 2 is an enlarged view of a measuring unit in the device for measuring the filling amount of liquid crystal in a display according to the embodiment of the present disclosure. As shown in fig. 1 and fig. 2, the water tank 10 includes a cover plate 1 and an accommodating chamber 2 disposed in the cover plate 1, and the size of the accommodating chamber 2 is not smaller than the size of the film layer structure 3 of the liquid crystal display panel 40 in the display area, so that the accommodating chamber 2 can accommodate the entire film layer structure 3 of the liquid crystal display panel 40 in the display area. The accommodating cavity 2 is provided with an opening for the liquid crystal display panel 40 to enter and exit the film layer structure 3 in the display area, and the film layer structure 3 enters the accommodating cavity 2 through the opening. The water level measuring device 20 is disposed on the inner wall of the water tank 10, and after the liquid crystal display panel 40 corresponds to the opening of the accommodating chamber 2 in the film structure 3 of the display area, the water tank 10 is controlled to move toward the direction close to the liquid crystal display panel 40, so that the liquid crystal display panel 40 enters the accommodating chamber 2 through the opening of the accommodating chamber 2 in the film structure 3 of the display area, and then the measuring liquid with a preset volume is injected into the accommodating chamber 2 of the water tank 10. After the water level measuring device 20 measures that the water tank 10 contains the film layer structure 3, the water level value of the measured liquid in the containing cavity 2 is measured. The processing unit is connected with the water level measuring device 20 in the measuring unit, can receive the water level value that water level measuring device 20 measured and reachs to contrast with predetermined water level value according to this water level value, obtain the water level variation value, obtain the volume of membranous layer structure 3 according to the water level variation value again. The preset water level value refers to the water level value of the measuring liquid with the preset volume injected when the accommodating cavity 2 does not contain an accommodating object.
In an exemplary embodiment, the water level measuring device 20 may be a water level sensor or a scale mark.
In an exemplary embodiment, the processing unit may be an LC device (similar to PS-LC linkage), and may obtain a water level variation value according to a comparison between the water level value and a preset water level value, and then obtain the volume of the film structure 3 according to the water level variation value.
In an exemplary embodiment, at least two accommodating cavities 2 are arranged in the cover plate 1, the liquid crystal display panel 40 includes at least two display areas and film layer structures 3 arranged on the display areas, and the accommodating cavities 2 are in one-to-one correspondence with the film layer structures 3 on the display areas, so that the measuring unit can measure the film layer structures 3 of the plurality of display areas on the liquid crystal display panel 40 at the same time, and the measuring efficiency is improved.
In an exemplary embodiment, at least two accommodating cavities 2 with different volumes are arranged in the cover plate 1, so that the water tank 10 can measure the volumes of the film layer structures on the display areas with different sizes according to production requirements.
In an exemplary embodiment, the measuring unit further includes a water injection device 50, the water injection device 50 includes a water injection pipeline 5 and a first spray head 6 disposed on the water injection pipeline 5, a water inlet 7 is disposed on the water tank 10, the water inlet 7 is communicated with the accommodating cavity 2 in the water tank 10, and the first spray head 6 is disposed corresponding to the water inlet 7 and is used for injecting a preset volume of measuring liquid into the accommodating cavity 2.
In an exemplary embodiment, the apparatus for measuring the liquid crystal filling amount of the display further includes a second nozzle for cleaning the liquid crystal display panel measured by the measuring unit, and the second nozzle and the first nozzle share a water injection pipe.
The measuring unit in the device for measuring the liquid crystal filling amount of the display provided by the embodiment of the disclosure can be positioned in a cleaning section in an ODF (liquid crystal drop making) and arranged in a cleaning machine, so that the device for measuring the liquid crystal filling amount of the display provided by the embodiment of the disclosure does not need to additionally occupy a production line and does not need to add an additional process, the volume of the film structure 3 can be measured in the cleaning process, the test times are reduced, the development cost is saved, the development progress is accelerated, the time for product research and development is saved, and the device is accurate and efficient.
In an exemplary embodiment, the measuring unit further includes a lifting structure 30, and the lifting structure 30 is connected to the water tank 1 and can drive the water tank 1 to move along the film layer structure 3 close to the liquid crystal display panel 40 in the display area. Wherein the lifting structure 30 may be a driving motor.
In an exemplary embodiment, the measuring unit further includes a conveying mechanism, the conveying mechanism is located at one side of the water tank 1, and the conveying mechanism is configured to drive the liquid crystal display panel 40 to move, so that the film layer structure 3 of the liquid crystal display panel 40 in the display area is disposed corresponding to the water tank 1. Wherein, transport mechanism can be the roll table.
When the liquid crystal display panel moves to the below of water tank 10 through transport mechanism, make liquid crystal display panel 40 correspond the setting at the opening of the membranous layer structure 3 of display area and water tank 10, water tank 10 descends through elevation structure 30, make liquid crystal display panel get into water tank 10 at the opening of the membranous layer structure 3 of display area through water tank 10, then hold the measuring liquid of the chamber 2 injection volume of predetermineeing in to water tank 10 through first shower nozzle 6, water level measuring device 20 in the water tank 10 measures the water tank 10 and holds liquid crystal display panel behind the membranous layer structure 3 of display area, the water level value of measuring liquid in the water tank 10. The processing unit receives the water level value measured by the water level measuring device 20, compares the water level value with a preset water level value to obtain a water level change value, and obtains the volume of the film structure 3 according to the water level change value.
In an exemplary embodiment, the processing unit is further configured to obtain an actual liquid crystal box thickness volume according to a difference between a volume of a set liquid crystal box thickness and a volume of the film layer structure 3 of the liquid crystal display panel in the display area, and then obtain a liquid crystal filling amount of the display according to the actual liquid crystal box thickness volume; the volume of the liquid crystal box thickness is set to be the product of the area of the display area of the liquid crystal display panel and the liquid crystal box thickness after the liquid crystal display panel is aligned with the liquid crystal display panel in advance.
In an exemplary embodiment, the apparatus for measuring the liquid crystal filling amount of the display according to the embodiments of the present invention may perform a sampling measurement on the liquid crystal display panels of the same batch, so as to improve the production efficiency of the liquid crystal display panels and reduce the influence of the apparatus for measuring the liquid crystal filling amount of the display on the production capacity. For example, the apparatus for measuring the liquid crystal filling amount of the display performs sampling measurement once for every 10 liquid crystal display panels in the same batch.
In a second aspect, an embodiment of the present invention provides a method for measuring a liquid crystal filling amount of a display, including:
measuring the volume of a film layer structure of the liquid crystal display panel in a display area;
obtaining the actual volume of the liquid crystal box thickness according to the difference between the set volume of the liquid crystal box thickness and the volume of the film layer structure, and further obtaining the liquid crystal filling amount of the display; the volume of the set liquid crystal box thickness is the product of the area of the display area of the liquid crystal display panel and the set liquid crystal box thickness.
In an exemplary embodiment, measuring a volume of a film layer structure of a liquid crystal display panel in a display area includes:
and immersing the film layer structure of the liquid crystal display panel in the display area into a water tank, and measuring the water level change of liquid in the water tank to obtain the volume of the film layer structure.
In a third aspect, embodiments of the present invention provide a display device, which is prepared by the method for measuring the liquid crystal filling amount of the display device as described in any one of the above. The display device includes, for example, a mobile phone, a tablet computer, a smart wearable product (smart watch, bracelet), a Personal Digital Assistant (PDA), an in-vehicle computer, and the like. The embodiment of the present application does not specifically limit the specific form of the display device.
In the description of the embodiments of the present invention, it should be understood that the terms "middle", "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the description of the embodiments of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Although the embodiments of the present invention have been described above, the above description is only for the convenience of understanding the present invention, and is not intended to limit the present invention. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (11)
1. The device for measuring the liquid crystal filling amount of the display is characterized by comprising a measuring unit and a processing unit;
the measuring unit comprises a water tank and a water level measuring device arranged in the water tank, and the water tank is used for accommodating a film layer structure of the liquid crystal display panel in a display area; the water level measuring device is used for measuring the water level value of liquid in the water tank after the water tank contains the film layer structure;
the processing unit is connected with the measuring unit, and the processing unit obtains the volume of the film layer structure according to the comparison between the water level value obtained by the measurement of the measuring unit and a preset water level value.
2. The apparatus as claimed in claim 1, wherein the water tank comprises a cover plate and a receiving cavity disposed in the cover plate, the receiving cavity having an opening for the film structure to enter and exit.
3. The apparatus as claimed in claim 2, wherein the cover plate has at least two receiving cavities therein, the lcd panel has at least two display regions and film structures disposed on the display regions, and the receiving cavities correspond to the film structures on the display regions one to one.
4. The apparatus for measuring the filling amount of liquid crystal for display device according to claim 2, wherein at least two receiving cavities having different volumes are provided in the cover plate.
5. The apparatus as claimed in claim 1, wherein the measuring unit further comprises a water injection device, the water injection device comprises a water injection pipe and a first nozzle disposed on the water injection pipe, the water tank is provided with a water inlet, and the first nozzle is disposed corresponding to the water inlet.
6. The apparatus as claimed in claim 5, further comprising a second nozzle for cleaning the LCD panel measured by the measuring unit, wherein the second nozzle and the first nozzle share the water injection pipe.
7. The apparatus as claimed in claim 1, wherein the measuring unit further comprises a lifting structure connected to the water tank for driving the water tank to move along a film structure adjacent to the liquid crystal display panel in the display area.
8. The apparatus as claimed in claim 1, wherein the measuring unit further comprises a conveying mechanism, the conveying mechanism is located at one side of the water tank, and the conveying mechanism can drive the liquid crystal display panel to move, so that the film structure of the liquid crystal display panel in the display area is disposed corresponding to the water tank.
9. A method for measuring the liquid crystal filling amount of a display is characterized by comprising the following steps:
measuring the volume of a film layer structure of the liquid crystal display panel in a display area;
obtaining the actual volume of the liquid crystal box thickness according to the difference between the set volume of the liquid crystal box thickness and the volume of the film layer structure, and further obtaining the liquid crystal filling amount of the display; the volume of the set liquid crystal box thickness is the product of the area of the display area of the liquid crystal display panel and the set liquid crystal box thickness.
10. The method for measuring the filling amount of liquid crystal in a display according to claim 1, comprising:
and immersing the film layer structure of the liquid crystal display panel in the display area into a water tank, and measuring the water level change of liquid in the water tank to obtain the volume of the film layer structure.
11. A display device prepared by the method for measuring the filling amount of liquid crystal in a display according to claim 9 or 10.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110412486.XA CN112882264A (en) | 2021-04-16 | 2021-04-16 | Device and method for measuring liquid crystal filling amount of display and display device |
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| CN202110412486.XA CN112882264A (en) | 2021-04-16 | 2021-04-16 | Device and method for measuring liquid crystal filling amount of display and display device |
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| CN202110412486.XA Pending CN112882264A (en) | 2021-04-16 | 2021-04-16 | Device and method for measuring liquid crystal filling amount of display and display device |
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