CN113050318B - Liquid crystal panel and liquid crystal display device - Google Patents
Liquid crystal panel and liquid crystal display device Download PDFInfo
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- CN113050318B CN113050318B CN202110293400.6A CN202110293400A CN113050318B CN 113050318 B CN113050318 B CN 113050318B CN 202110293400 A CN202110293400 A CN 202110293400A CN 113050318 B CN113050318 B CN 113050318B
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- alignment
- liquid crystal
- alignment mark
- circuit board
- glass substrate
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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
-
- 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
- G02F1/1345—Conductors connecting electrodes to cell terminals
Abstract
The invention has proposed a liquid crystal faceplate and applied the liquid crystal disply device of this liquid crystal faceplate, the said liquid crystal faceplate includes flexible breadboard and glass substrate, one of said flexible breadboard and said glass substrate has first counterpoint marks, another has second counterpoint marks, said first counterpoint mark has at least one to counterpoint and raise; a plurality of alignment grooves are formed on the second alignment mark, and the alignment grooves and the alignment protrusions are correspondingly arranged. Therefore, the invention solves the problem that the inner leads of the liquid crystal panel in the prior art are difficult to align.
Description
Technical Field
The invention relates to the technical field of liquid crystal display, in particular to a liquid crystal panel and a liquid crystal display device.
Background
In the manufacturing process of the liquid crystal panel, when the flexible circuit board is connected with the glass substrate, the alignment mark on the flexible circuit board needs to be aligned with the alignment mark on the glass substrate, so that the leads of the flexible circuit board and the glass substrate are aligned, and the liquid crystal panel can normally work. However, due to processing errors and the like, the situation that the internal circuits are not aligned after the alignment marks on the glass substrate and the flexible printed circuit are aligned often occurs, so that the liquid crystal panel cannot normally display, and thus the flexible printed circuit or the glass substrate needs to be reworked, and the manufacturing cost of the liquid crystal panel is increased. That is, the conventional liquid crystal panel has a problem that the inner leads are difficult to align.
Disclosure of Invention
The invention provides a liquid crystal panel and a liquid crystal display device comprising the same, and aims to solve the problem that the internal circuits of the liquid crystal panel are difficult to align in the prior art.
In order to solve the above problems, the present invention provides a liquid crystal panel, which includes a flexible circuit board and a glass substrate, wherein one of the flexible circuit board and the glass substrate is formed with a first alignment mark, and the other is formed with a second alignment mark, and the first alignment mark has at least one alignment protrusion; a plurality of alignment grooves are formed on the second alignment mark, and the alignment grooves and the alignment protrusions are correspondingly arranged.
In one embodiment, the width of the alignment protrusion is not greater than the width of the alignment groove.
In an embodiment, the second alignment mark includes 1 longitudinal alignment bar and a plurality of transverse alignment bars, the plurality of transverse alignment bars are perpendicular to the longitudinal alignment bar, the plurality of transverse alignment bars are arranged at intervals, the alignment groove is formed between adjacent transverse alignment bars, and the width of each transverse alignment bar is the distance between two adjacent alignment grooves.
In one embodiment, the spacing between two adjacent alignment slots is consistent; or the spacing between the alignment grooves is gradually increased along the extending direction of the longitudinal alignment grooves.
In an embodiment, the lateral alignment bars include a first lateral alignment bar and a second lateral alignment bar, a width of the first lateral alignment bar is greater than a width of the second lateral alignment bar, and the first lateral alignment bar and the second lateral alignment bar are disposed adjacent to each other.
In one embodiment, each of the alignment slots has a uniform width.
In one embodiment, the first alignment mark is formed on the flexible circuit board, and the second alignment mark is formed on the glass substrate.
In an embodiment, the glass substrate includes an array substrate and a color filter substrate, the array substrate and the color filter substrate are disposed opposite to each other, at least one side of the array substrate extends outward relative to the color filter substrate to form a bonding plate, and one end of the flexible circuit board is connected to a surface of the bonding plate close to the color filter substrate.
In an embodiment, the first alignment mark is formed at one end where the flexible circuit board and the bonding board are connected, the second alignment mark is formed on one surface of the bonding board close to the color film substrate, and when the flexible circuit board and the bonding board are connected, the alignment protrusion extends into one of the alignment grooves.
In one embodiment, the liquid crystal display device comprises the liquid crystal panel.
Thus, the present invention provides a liquid crystal panel and a liquid crystal display device including the same. Specifically, by arranging the second alignment mark with the plurality of alignment grooves, when the alignment protrusion extends into one of the alignment grooves and cannot be aligned, the alignment protrusion extends into the other alignment groove to perform alignment again. Therefore, the problem that the internal circuit of the liquid crystal panel in the prior art is difficult to align is solved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a second alignment mark according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a second embodiment of a second alignment mark according to the present invention;
FIG. 3 is a schematic structural diagram of an embodiment of a first alignment mark according to the present invention;
FIG. 4 is a diagram illustrating an embodiment of a process of aligning a first alignment mark and a second alignment mark according to the present invention;
fig. 5 is another embodiment of the alignment process of the first alignment mark and the second alignment mark according to the present invention.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 10 | |
11 | Alignment bulge |
| 20 | |
21 | |
| 22 | |
22a | First |
| 22b | Second |
23 | Alignment groove |
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, if appearing throughout the text, "and/or" is meant to include three juxtaposed aspects, taking "A and/or B" as an example, including either the A aspect, or the B aspect, or both A and B satisfied aspects. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
Referring to fig. 1, fig. 3 and fig. 4, the present invention provides a liquid crystal panel, which includes a flexible circuit board and a glass substrate, wherein one of the flexible circuit board and the glass substrate is formed with a first alignment mark 10, and the other is formed with a second alignment mark 20, and the first alignment mark 10 has at least one alignment protrusion 11; a plurality of alignment grooves 23 are formed on the second alignment mark 20, and the alignment grooves and the alignment protrusions are correspondingly arranged. Further, a first alignment mark 10 is formed on the flexible circuit board, and the first alignment mark 10 has at least one alignment protrusion 11; a second alignment mark 20 is formed on the glass substrate.
In the assembling process of the liquid crystal panel, the liquid crystal cell needs to be communicated with an external circuit. And an Outer Lead Bonding (OLB) process is an important electrical crimping process for communicating a liquid crystal cell with an external circuit. One end of a driving circuit IC (integrated circuit) for driving a liquid crystal panel is press-bonded to a connection electrode lead on a liquid crystal cell, and the other end is press-bonded to a lead on a printed circuit board. In the crimping process, pins at various positions need to be aligned, and alignment marks for alignment need to be arranged. In one embodiment, the two substrates having the leads to be aligned are a flexible printed circuit board and a glass substrate, and during manufacturing, a first alignment mark 10 and a second alignment mark 20 are respectively disposed on the flexible printed circuit board and the glass substrate to assist in aligning the leads on the flexible printed circuit board and the glass substrate. The positions of the first alignment mark 10 and the second alignment mark 20 on the flexible circuit board and the glass substrate are specially arranged, so that when the alignment protrusion 11 of the first alignment mark 10 extends into the alignment groove 23 of the second alignment mark 20, the leads of the flexible circuit board and the glass substrate are aligned. However, there is a possibility that the lead may be misaligned when the alignment marks are aligned due to various reasons such as machining errors. At this time, the flexible printed circuit board or the glass substrate needs to be reworked to adjust the position of the first alignment mark 10 or the second alignment mark 20, which greatly increases the manufacturing cost. Therefore, we propose a liquid crystal panel, in which a plurality of alignment slots 23 are formed on the second alignment mark 20, and when the alignment leads cannot be aligned at one time, the alignment protrusions 11 can be sequentially tried to be inserted into different alignment slots 23 to achieve fine adjustment of the lead positions, and finally, the leads on the flexible circuit board and the glass substrate are aligned, so that the liquid crystal panel can achieve normal display. Due to the limitation of the precision of the processing equipment, if the position of the flexible circuit board and the position of the glass substrate are directly adjusted by the processing equipment without the assistance of alignment marks, the error is large, and the alignment of the pins is difficult to realize. By adopting the alignment marks with the plurality of alignment grooves 23, the second alignment marks 20 with different shapes can be arranged during manufacturing to arrange the plurality of alignment grooves 23 with fixed intervals, so that the positions of the flexible circuit board and the glass substrate can be accurately adjusted, and the alignment of the leads can be realized.
Referring to fig. 1 to 3, in an embodiment, the width of the alignment protrusion 11 is not greater than the width of the alignment groove 23. Further, the first alignment mark 10 and the second alignment mark 20 need to be matched, that is, the alignment protrusion 11 needs to be able to extend into the alignment groove 23. That is, the width of the alignment protrusion 11 is slightly smaller than the width of the alignment groove 23, or the widths of the alignment protrusion 11 and the alignment groove 23 are the same. Further, since alignment marks are often used for alignment of the driving circuit IC and the liquid crystal cell. Compared with a drive circuit IC, the glass substrate on the liquid crystal box is easier to process. In the production process, the finished driving circuit IC is usually assembled on the liquid crystal cell, thereby completing the assembly of the liquid crystal panel. And the alignment mark on the driving circuit IC is processed. The driving circuit IC usually uses a cross-shaped alignment mark having an alignment protrusion 11. Therefore, when manufacturing the liquid crystal cell, that is, the second alignment mark 20 provided on the glass substrate is processed according to the type, size and shape of the first alignment mark 10. The width of the second alignment groove 23 should be slightly larger than the width of the alignment protrusion 11 or be the same as the width of the alignment protrusion 11. So as to realize the matching of the alignment groove 23 and the alignment bulge 11 and improve the alignment precision.
Referring to fig. 1, 4 and 5, in an embodiment, each of the alignment slots 23 has a uniform width. Further, in order to reduce the processing difficulty and the manufacturing cost, the width of the alignment groove 23 may be determined according to the alignment protrusion 11 on the first alignment mark 10. And ensures that the width of each of the alignment grooves 23 is substantially the same. To achieve accurate alignment of the first alignment mark 10 and the second alignment mark 20. Achieving better contraposition effect.
Referring to fig. 1 and 2, in an embodiment, the second alignment mark 20 includes 1 longitudinal alignment bar 21 and a plurality of transverse alignment bars 22, the plurality of transverse alignment bars 22 are disposed perpendicular to the longitudinal alignment bar 21, the plurality of transverse alignment bars 22 are disposed at intervals, the alignment groove 23 is formed between adjacent transverse alignment bars 22, and a width of each transverse alignment bar 22 is a distance between two adjacent alignment grooves 23. The second alignment mark 20 may have various shapes. However, the position deviation of the lead wire during the alignment is usually a position deviation in the horizontal direction or the vertical direction. Optionally, the second alignment mark 20 is composed of a transverse alignment bar 22 and a longitudinal alignment bar 21. One of the transverse alignment bar 22 or the longitudinal alignment bar 21 is parallel to the lead on the glass substrate, and the other is perpendicular to the lead. So, counterpoint groove 23 on the glass substrate is along the parallel direction of lead wire or vertical direction interval setting, can cooperate counterpoint arch 11 along horizontal direction or vertical direction and different counterpoint grooves 23 in proper order to realize the lead wire and counterpoint in proper order on horizontal direction or vertical direction.
In one embodiment, the adjacent two alignment slots 23 have the same spacing; alternatively, the pitch of the alignment grooves 23 gradually increases along the extending direction of the longitudinal alignment grooves 23. Further, in order to meet different requirements, the second alignment marks 20 can be arranged in different shapes. On the second alignment marks 20 of different shapes, the pitches of the alignment grooves 23 are different. In one embodiment, the spacing of the alignment slots 23 is equidistant, and in another embodiment, the alignment slots 23 are not equidistant to achieve different adjustment position requirements.
Referring to fig. 2, in an embodiment, the lateral alignment bars 22 include a first lateral alignment bar 22a and a second lateral alignment bar 22a, a width of the first lateral alignment bar 22a is greater than a width of the second lateral alignment bar 22a, and the first lateral alignment bar 22a and the second lateral alignment bar 22a are disposed adjacent to each other. Further, the adjustment of the pitch of the alignment grooves 23 can be achieved by adjusting the pitch between the adjacent alignment grooves 23. Alternatively, a wider first lateral alignment strip 22a and a narrower second lateral alignment strip 22a are provided, and the first lateral alignment strip 22a and the second lateral alignment strip 22a are adjacently provided, according to the actual requirement. Thus, the plurality of adjacent alignment grooves 23 have two different pitches. Thereby realizing the position adjustment of two different gears.
In one embodiment, the first alignment mark is formed on the flexible circuit board, and the second alignment mark is formed on the glass substrate. Generally, the packaging method of the driver circuit can be classified into a tcp (tape Carrier package) method, a cof (chip on film) method, and a cog (chip on glass) method. The package of the three types of driving circuits needs to be soldered with the lead wires, so that a first alignment mark needs to be arranged on the flexible circuit board, and a second alignment mark needs to be arranged on the glass substrate. Furthermore, the flexible circuit board and the glass substrate can also be other substrates which need to adopt the alignment marks for lead welding.
In an embodiment, the glass substrate includes an array substrate and a color filter substrate, the array substrate and the color filter substrate are disposed opposite to each other, at least one side of the array substrate extends outward relative to the color filter substrate to form a bonding plate, and one end of the flexible circuit board is connected to a surface of the bonding plate close to the color filter substrate. A COF (chip on film) method is commonly used for large-sized liquid crystal panels, and a processing device automatically cuts off COF units and bonds the COF units on a glass substrate, which is called a Tape Automated Bonding (Tape Automated Bonding) process. The two-step crimping process can adopt the alignment mark provided by the invention. The first part is the compression joint of a COF and a lead on glass, and the COF is sequentially attached through an ACF on the COF, the alignment and prepressing of the COF and the local compression of the COF; and the second step is the compression joint of the COF and the lead on the printed circuit board, and the COF and the printed circuit board are aligned and locally pressed after ACF attachment on the printed circuit board in sequence. Alternatively, the alignment mark provided by the invention can also be used on a printed circuit board and a flexible circuit board.
In an embodiment, the first alignment mark is formed at one end where the flexible circuit board and the bonding board are connected, the second alignment mark is formed on one surface of the bonding board close to the color film substrate, and when the flexible circuit board and the bonding board are connected, the alignment protrusion extends into one of the alignment grooves. Specifically, one end of the flexible circuit board is aligned and crimped with the bonding board, and the other end of the flexible circuit board is aligned and crimped with the printed circuit board. Namely, the two ends of the flexible circuit board are provided with alignment marks for alignment. For the sake of easy processing, the first alignment mark is a cross alignment mark commonly used in the market, and the second alignment mark is a specially designed alignment mark having a plurality of alignment grooves. The second alignment mark is arranged on the element with lower processing difficulty. In an embodiment, the second alignment mark is disposed on a surface of the bonding plate close to the color film substrate.
In one embodiment, the liquid crystal display device comprises the liquid crystal panel. Specifically, the invention provides a liquid crystal module, which comprises a liquid crystal panel and a backlight module, wherein the backlight module is arranged below a lower polarizer. In the liquid crystal manufacturing process, after a color film substrate and an array substrate are aligned, cutting, grinding and liquid crystal box electrical detection are sequentially carried out, and a liquid crystal display (a barecell, which refers to a liquid crystal display to which nothing is attached) is manufactured. And then, the liquid crystal display enters the next stage of manufacturing, and the liquid crystal display sequentially passes through the attaching process of the polaroid, the Tape Auto-bonding (TAB) process of the drive IC, the Printed Circuit Board (PCB) bonding process and the loop adjustment of the drive Circuit. Thereby completing the assembly of the entire liquid crystal panel (Open Cell). The liquid crystal panel can be sold to customers as a fully functional product. In addition, the liquid crystal panel and the backlight Module (Back-light Unit) are assembled to form a liquid crystal Module (Module), which is a product with more complete functions. The liquid crystal display device provided by the invention comprises a liquid crystal module. The liquid crystal display device is a product formed by adding a system driving circuit, a complete machine frame and other components to a liquid crystal module. Liquid crystal display devices are commonly used in television sets, computers, and other products.
The above description is only an alternative embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (6)
1. A liquid crystal panel, comprising:
a flexible circuit board;
a glass substrate;
one of the flexible circuit board and the glass substrate is provided with a first alignment mark, the other one of the flexible circuit board and the glass substrate is provided with a second alignment mark, and the first alignment mark is provided with at least one alignment bump; a plurality of alignment grooves are formed on the second alignment mark, and the alignment grooves and the alignment protrusions are correspondingly arranged;
when the leads of the flexible circuit board and the glass substrate cannot be aligned in one alignment, the alignment protrusions are used for trying to extend into different alignment grooves in sequence so as to realize fine adjustment of the position between the two leads;
the distance between two adjacent alignment grooves is consistent; alternatively, the first and second electrodes may be,
the spacing between the alignment grooves is gradually increased along the extension direction of the second alignment mark; alternatively, the first and second electrodes may be,
the second alignment mark comprises a first transverse alignment strip and a second transverse alignment strip, the width of the first transverse alignment strip is larger than that of the second transverse alignment strip, and the first transverse alignment strip and the second transverse alignment strip are arranged adjacently.
2. The liquid crystal panel according to claim 1, wherein each of the alignment grooves has a uniform width.
3. The liquid crystal panel according to claim 1, wherein the first alignment mark is formed on the flexible wiring board, and the second alignment mark is formed on the glass substrate.
4. The liquid crystal panel according to claim 1, wherein the glass substrate includes an array substrate and a color filter substrate, the array substrate and the color filter substrate are disposed opposite to each other, at least one side of the array substrate extends outward relative to the color filter substrate to form a bonding plate, and one end of the flexible circuit board is connected to a surface of the bonding plate close to the color filter substrate.
5. The liquid crystal panel of claim 4, wherein the first alignment mark is formed at one end of the flexible printed circuit board connected to the bonding board, the second alignment mark is formed on one surface of the bonding board close to the color filter substrate, and when the flexible printed circuit board is connected to the bonding board, the alignment protrusion extends into one of the alignment grooves.
6. A liquid crystal display device characterized by comprising the liquid crystal panel according to any one of claims 1 to 5.
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| CN202110293400.6A CN113050318B (en) | 2021-03-18 | 2021-03-18 | Liquid crystal panel and liquid crystal display device |
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| CN202110293400.6A CN113050318B (en) | 2021-03-18 | 2021-03-18 | Liquid crystal panel and liquid crystal display device |
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| CN113050318A CN113050318A (en) | 2021-06-29 |
| CN113050318B true CN113050318B (en) | 2022-01-25 |
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| CN106973485A (en) * | 2017-03-14 | 2017-07-21 | 惠科股份有限公司 | Display device and its flexible PCB |
Family Cites Families (1)
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| CN105005161B (en) * | 2015-08-10 | 2018-05-15 | 深圳晶华显示器材有限公司 | Mistake proofing crimping production method, structure and the display panel of display panel |
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| US6373548B1 (en) * | 1999-07-31 | 2002-04-16 | Lg. Philips Lcd Co., Ltd. | Alignment key formed on the substrate of the liquid crystal display device |
| CN1409283A (en) * | 2001-09-14 | 2003-04-09 | 东北先锋株式会社 | Mark for visual detection and electronic instrument |
| CN1308747C (en) * | 2003-04-23 | 2007-04-04 | 统宝光电股份有限公司 | Contrapuntal structure and method |
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| CN113050318A (en) | 2021-06-29 |
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