CN108287426B - Liquid crystal module - Google Patents

Liquid crystal module Download PDF

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Publication number
CN108287426B
CN108287426B CN201810123660.7A CN201810123660A CN108287426B CN 108287426 B CN108287426 B CN 108287426B CN 201810123660 A CN201810123660 A CN 201810123660A CN 108287426 B CN108287426 B CN 108287426B
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CN
China
Prior art keywords
rib
cof
liquid crystal
crystal module
positions
Prior art date
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Active
Application number
CN201810123660.7A
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Chinese (zh)
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CN108287426A (en
Inventor
周辉
朋朝明
石德福
罗凯戈
吴哲
朱杉婷
王博
王玉年
沈思宽
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen Skyworth RGB Electronics Co Ltd
Original Assignee
Shenzhen Skyworth RGB Electronics Co Ltd
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Publication date
Application filed by Shenzhen Skyworth RGB Electronics Co Ltd filed Critical Shenzhen Skyworth RGB Electronics Co Ltd
Priority to CN201810123660.7A priority Critical patent/CN108287426B/en
Publication of CN108287426A publication Critical patent/CN108287426A/en
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Publication of CN108287426B publication Critical patent/CN108287426B/en
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Classifications

    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/133308Support structures for LCD panels, e.g. frames or bezels
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/133308Support structures for LCD panels, e.g. frames or bezels
    • G02F1/133317Intermediate frames, e.g. between backlight housing and front frame
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/133308Support structures for LCD panels, e.g. frames or bezels
    • G02F1/13332Front frames

Abstract

The invention belongs to the technical field of liquid crystal televisions and discloses a liquid crystal module. The liquid crystal module comprises a glass panel, a middle frame, a face frame and a COF (chip on film), wherein the middle frame is arranged below the glass panel, and a groove is formed in the outer wall of the middle frame; the surface frame is coated on the outer sides of the glass panel and the middle frame, and the inner wall of the surface frame is provided with a rib position; one end of the COF is arranged on the glass panel, and the other end of the COF is pressed against the rib position and is bent towards the groove direction. According to the invention, the rib positions are arranged at the positions, corresponding to the COF, of the inner wall of the face frame, and the grooves are arranged at the positions, corresponding to the COF, of the outer wall of the middle frame, so that no limiting material is required to be added during assembly of the liquid crystal module, the rib positions are only utilized to apply pressure to the COF, the COF is bent towards the inner parts of the grooves, and the relative positions of the grooves and the rib positions are utilized to realize fixation, so that the problems of COF bending and positioning protection are efficiently and simply solved, and the design of the ultra-narrow-frame.

Description

Liquid crystal module
Technical Field
The invention relates to the technical field of liquid crystal televisions, in particular to a liquid crystal module.
Background
Liquid crystal panels (Open cells) can be divided into two types, i.e., a Chip On Film (COF) substrate and a Chip On Film (COF) substrate, due to different processes. COF is a Flexible Printed Circuit (FPC) including a Circuit and an Integrated Circuit (IC) bonded to a glass panel, and is Flexible and easily damaged.
The liquid crystal television has higher and higher requirements on narrow frames, so that ultra-narrow-frame and frameless products have come to the fore, but the ultra-narrow frame of the liquid crystal panel with the side COF is very difficult. To achieve an ultra-narrow frame, the COF must be bent downward, and how to limit and fix the COF after bending and how to protect the COF becomes the key point of research and design in the industry.
The COF is bent and fixed in the industry, and two schemes are designed:
firstly, the method comprises the following steps: as shown in fig. 1, mylar sheet 5 with adhesive on one side is used, one end of which is attached to COF4, and the other end of which is bent and attached to back panel 6 or middle frame 2, which has the disadvantage of increasing the processing procedure and the cost of mylar sheet 5;
secondly, the method comprises the following steps: as shown in fig. 2, the plastic card 7 is pressed downward to make the COF4 close to the middle frame 2, i.e. the COF4 is bent and the COF4 is fixed by the plastic card 7, which has the disadvantages of increasing the cost of the plastic card 7, increasing the assembly process and affecting the production efficiency.
Therefore, a new ultra-narrow bezel liquid crystal module is needed to solve the above problems.
Disclosure of Invention
The invention aims to provide a liquid crystal module to solve the problems of high production cost and low production efficiency in the design of bending and fixing a COF in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
a liquid crystal module, comprising:
a glass panel;
the middle frame is arranged below the glass panel, and a groove is formed in the outer wall of the middle frame;
the surface frame is coated on the outer sides of the glass panel and the middle frame, and the inner wall of the surface frame is provided with a rib position;
one end of the COF is arranged on the glass panel, and the other end of the COF is pressed against the rib position and is bent towards the groove direction.
Preferably, the rib is formed by plastic injection molding.
Preferably, the end face of the rib contacting the COF is a curved surface structure.
Preferably, the curved surface structure is formed by connecting a first curved surface and a second curved surface, and when the COF is bent, the first curved surface and the second curved surface are sequentially contacted with the COF.
Preferably, the rib positions pressed against any one of the COFs include two inner rib positions and two outer rib positions, and the two inner rib positions are located between the two outer rib positions.
Preferably, the pitch of the two inner rib sites is greater than the length of the COF containing integrated circuit region.
Preferably, the spacing of the two outer rib sites is less than the length of the COF.
Preferably, the height of the rib sites is greater than half the COF width.
Preferably, the rib portions have the same thickness as the face frame.
Preferably, the inner wall of the middle frame is provided with a bulge at a position corresponding to the groove.
The invention has the beneficial effects that:
according to the invention, the rib positions are arranged at the positions, corresponding to the COF, of the inner wall of the face frame, and the grooves are arranged at the positions, corresponding to the COF, of the outer wall of the middle frame, so that no limiting material is required to be added during assembly of the liquid crystal module, the rib positions are only utilized to apply pressure to the COF, the COF is bent towards the inner parts of the grooves, and the relative positions of the grooves and the rib positions are utilized to realize fixation, so that the problems of COF bending and positioning protection are efficiently and simply solved, and the design of the ultra-narrow-frame.
Drawings
FIG. 1 is a side view of a COF fixing mode of a liquid crystal module in the prior art;
FIG. 2 is a side view showing another COF fixing method of a liquid crystal module in the prior art;
FIG. 3 is a side view of a COF fixing mode of a liquid crystal module according to the present invention;
FIG. 4 is a schematic view of the COF and bezel position relationship of FIG. 3;
fig. 5 is a bottom view of the frame rib of fig. 4.
In the figure:
1. a glass panel; 2. a middle frame; 21. a groove; 22. a protrusion; 3. a face frame; 31. a rib position; 32. a first curved surface; 33. a second curved surface; 4. COF; 311. an inner rib position; 312. an outer rib position; 5. a mylar sheet; 6. a back plate; 7. plastic card.
Detailed Description
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
As shown in fig. 3, the liquid crystal module provided by the present invention comprises a glass panel 1, a middle frame 2, a face frame 3 and a back plate 6, wherein:
the middle frame 2 is positioned below the glass panel 1, the middle frame 2 is arranged on the back panel 6, and the face frame 3 is coated on the side faces of the glass panel 1, the middle frame 2 and the back panel 6 and forms a cavity capable of accommodating the COF4 with the middle frame 2, the back panel and the glass panel 1. The outer wall of the middle frame 2 is provided with a groove 21, the inner wall of the face frame 3 is provided with a rib position 31, one end of the COF4 is arranged on the glass panel 1, and the other end of the COF4 is pressed against the rib position 31 and is bent towards the groove 21. According to the invention, the rib 31 is arranged at the position corresponding to the COF4 on the inner wall of the face frame 3, and the groove 21 is arranged at the position corresponding to the COF4 on the outer wall of the middle frame 2, so that no limit material is required to be added during assembly of the liquid crystal module, pressure is applied to the COF4 only by using the rib 31, the COF4 is bent towards the inside of the groove 21, and fixation is realized by using the relative positions of the groove 21 and the rib 31, so that the bending and positioning protection of the COF4 are efficiently and simply solved, and the design of the ultra-narrow-frame liquid crystal module is realized.
Specifically, the rib positions 31 are formed by plastic injection molding, so that when the rib positions 31 are in contact with the COF4, hard contact with the COF4 can be avoided to the greatest extent, and it can be understood that the rib positions 31 can also be integrally formed with the face frame 3, and then the surfaces of the rib positions 31 are coated with the plastic; it will be further appreciated that the rib locations 31 may also be injection molded from other resilient or flexible materials, such as flexible resins or plastics.
Specifically, referring to fig. 4, when the rib 31 presses the COF4, the end face of the rib 31 contacting the COF4 is a curved surface structure, and the curved surface structure is formed by connecting a first curved surface 32 and a second curved surface 33; specifically, the first curved surface 32 is a curved surface where the rib 31 contacts the COF4 when the face frame 3 is initially mounted, and the second curved surface 33 is a curved surface where the rib 31 contacts the COF4 when the face frame 3 is mounted. The contour shape of the curved surface structure is obtained by simulating the motion track of the COF4 in the pressing process, and the curved surface structure can ensure that when the rib 31 presses the COF4, the contact areas of the first curved surface 32 and the second curved surface 33 and the outer surface of the COF4 are always kept in an ideal range or in surface contact, so that the rib 31 is prevented from being in line contact with the surface of the COF4, and a large pressure is generated on the outer surface of the COF4 at a certain moment.
Specifically, with reference to fig. 3, the inner wall of the middle frame 2 is provided with the protrusion 22 having the same shape as the groove 21, the protrusion 22 is disposed at a position corresponding to the groove 21, and the protrusion 22 is disposed on the inner wall of the middle frame 2, so that the structural strength reduction caused by the groove 21 being formed on the outer wall of the middle frame 2 can be avoided.
Specifically, referring to fig. 5, fig. 5 is a bottom view of the rib 31 of the face frame 3 disposed on the inner wall thereof. The rib position 31 shown in fig. 5 is selected from any rib position 31 which is pressed against the COF4 as shown in fig. 4, the rib position 31 shown in fig. 5 includes two inner rib positions 311 and two outer rib positions 312, the two inner rib positions 311 are located between the two outer rib positions 312, preferably, the two inner rib positions 311 are located at the center of the rib position 31, and the two outer rib positions 312 are located at both ends of the rib position 31. It can be understood that each rib 31 at least comprises two symmetrical inner ribs 311 and two symmetrical outer ribs 312, and a plurality of middle ribs may be further disposed between the inner ribs 311 and the outer ribs 312 on the same side, so as to better ensure the structural strength of the face frame 3 and the contact area with the COF4, in this embodiment, it is preferable that the rib 31 corresponding to any one of the COFs 4 comprises two inner ribs 311 and two outer ribs 312.
Specifically, as shown in fig. 5, the distance between two inner pads 311 is greater than the length of the COF4 including the ic region (not shown), so that the pads 31 (or inner pads 311) are not always in contact with the ic region during the process of pressing the COF4, thereby avoiding damage to the COF 4.
Specifically, as shown in fig. 5, the distance between two outer ribs 312 is smaller than the length of COF4, so that the ribs 31 (or the outer ribs 312) can always contact and press with the COF 4.
Specifically, as shown in fig. 5, the height of the rib 31 is greater than half of the width of the COF4, in practical applications, the width of the COF4 adhered to the glass panel 1 is narrower, and the portion exposed outside the glass panel 1 is wider, so that when the COF4 is pressed by the rib 31 to be bent, the portion exposed outside the glass panel 1 is bent downward (i.e. the groove 21), and the bending degree depends on the height of the rib 31, so that the height of the rib 31 is at least greater than half of the width of the COF 4.
Specifically, with reference to fig. 5, the thickness of rib 31 (i.e., the width of rib 31 in the plan view of fig. 5) is the same as the thickness of face frame 3, and it can be understood that the thickness of rib 31 directly affects the contact area between rib 31 and COF4, so the thickness of rib 31 is not necessarily too small, and in the present embodiment, the thickness of rib 31 is preferably the same as or approximately the same as the thickness of face frame 3.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art based on the foregoing description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (9)

1. A liquid crystal module, comprising:
a glass panel (1);
the middle frame (2) is arranged below the glass panel (1), and a groove (21) is formed in the outer wall of the middle frame (2);
the face frame (3) is coated on the outer sides of the glass panel (1) and the middle frame (2), and the inner wall of the face frame (3) is provided with a rib position (31);
one end of the COF (4) is arranged on the glass panel (1), and the other end of the COF (4) is pressed against the rib position (31) and is bent towards the groove (21);
the height of the rib (31) is larger than half of the width of the COF (4).
2. A liquid crystal module according to claim 1, wherein the rib (31) is injection molded from plastic.
3. The liquid crystal module of claim 1, wherein the end surface of the rib (31) contacting the COF (4) is a curved surface structure.
4. The liquid crystal module according to claim 3, wherein the curved structure is formed by connecting a first curved surface (32) and a second curved surface (33), and when the COF (4) is bent, the first curved surface (32) and the second curved surface (33) are sequentially contacted with the COF (4).
5. The liquid crystal module according to claim 1, wherein the rib positions (31) abutting against any one of the COFs (4) comprise two inner rib positions (311) and two outer rib positions (312), and the two inner rib positions (311) are located between the two outer rib positions (312).
6. A liquid crystal module according to claim 5, characterized in that the pitch of two said inner rib sites (311) is greater than the length of the COF (4) containing integrated circuit area.
7. A liquid crystal module according to claim 5, characterized in that the spacing between two outer ribs (312) is smaller than the length of the COF (4).
8. A liquid crystal module according to claim 1, characterized in that the rib (31) has the same thickness as the face frame (3).
9. The liquid crystal module according to any one of claims 1 to 8, wherein a protrusion (22) is provided on the inner wall of the middle frame (2) at a position corresponding to the groove (21).
CN201810123660.7A 2018-02-07 2018-02-07 Liquid crystal module Active CN108287426B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810123660.7A CN108287426B (en) 2018-02-07 2018-02-07 Liquid crystal module

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810123660.7A CN108287426B (en) 2018-02-07 2018-02-07 Liquid crystal module

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CN108287426A CN108287426A (en) 2018-07-17
CN108287426B true CN108287426B (en) 2021-03-09

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Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109375403A (en) * 2018-11-07 2019-02-22 惠州市华星光电技术有限公司 Narrow frame display device and preparation method
CN109581715B (en) * 2019-01-07 2021-07-23 惠州市华星光电技术有限公司 Display module
CN110737124B (en) * 2019-10-24 2021-11-30 京东方科技集团股份有限公司 Frame and display device
CN111755389B (en) * 2020-06-29 2022-06-21 无锡睿勤科技有限公司 Chip on film assembly

Citations (4)

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Publication number Priority date Publication date Assignee Title
CN101668402A (en) * 2009-09-28 2010-03-10 友达光电(苏州)有限公司 Display module and circuit board fixing frame thereof
CN102297368A (en) * 2011-09-07 2011-12-28 友达光电股份有限公司 Backlight module
CN202995186U (en) * 2013-01-10 2013-06-12 京东方科技集团股份有限公司 Display device
CN104822035A (en) * 2015-04-28 2015-08-05 青岛海信电器股份有限公司 Frame, display device and television set

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4210423B2 (en) * 2000-11-01 2009-01-21 三菱電機株式会社 Display device and image terminal device using the display device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101668402A (en) * 2009-09-28 2010-03-10 友达光电(苏州)有限公司 Display module and circuit board fixing frame thereof
CN102297368A (en) * 2011-09-07 2011-12-28 友达光电股份有限公司 Backlight module
CN202995186U (en) * 2013-01-10 2013-06-12 京东方科技集团股份有限公司 Display device
CN104822035A (en) * 2015-04-28 2015-08-05 青岛海信电器股份有限公司 Frame, display device and television set

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