CN108761932A - Liquid crystal display panel - Google Patents
Liquid crystal display panel Download PDFInfo
- Publication number
- CN108761932A CN108761932A CN201810482876.2A CN201810482876A CN108761932A CN 108761932 A CN108761932 A CN 108761932A CN 201810482876 A CN201810482876 A CN 201810482876A CN 108761932 A CN108761932 A CN 108761932A
- Authority
- CN
- China
- Prior art keywords
- liquid crystal
- crystal display
- display panel
- layer
- choked flow
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1345—Conductors connecting electrodes to cell terminals
- G02F1/13452—Conductors connecting driver circuitry and terminals of panels
-
- 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
- G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Liquid Crystal (AREA)
Abstract
The present invention provides a kind of liquid crystal display panel.The liquid crystal display panel includes：Adjacent viewing area and rim area, the rim area includes underlay substrate, metal routing layer on underlay substrate, flatness layer on metal routing layer, insulating layer on flatness layer and metal routing layer, bonding terminal on insulating layer and metal routing layer, anisotropic conductive adhesive paste on bonding terminal, connection terminal on anisotropic conductive adhesive paste and the alignment film on insulating layer, at least one choked flow groove is equipped between the viewing area and bonding terminal, so that the alignment film in rim area can only flow into choked flow groove, alignment film is prevented to be covered on bonding terminal because of certain mobility, connection terminal and effective contact area of bonding terminal is avoided to reduce, it is bad so as to avoid liquid crystal display panel bonding, improve display effect, it is advantageously implemented the narrow frame of liquid crystal display panel.
Description
Technical field
The present invention relates to display technology field more particularly to a kind of liquid crystal display panels.
Background technology
With the development of display technology, liquid crystal display (Liquid Crystal Display, LCD) with high because drawing
The advantages that matter, power saving, fuselage are thin and have a wide range of application, gradually substitution cathode-ray tube (Cathode Ray Tube, CRT)
Display screen is widely used in mobile phone, TV, personal digital assistant, digital camera, laptop, desktop computer etc.
Various consumer electrical products become the mainstream in display device.
Liquid crystal display on existing market is largely backlight liquid crystal display comprising liquid crystal display panel and the back of the body
Optical mode group (Backlight Module).The operation principle of liquid crystal display panel is in thin-film transistor array base-plate (Thin
Film Transistor Array Substrate, TFT Array Substrate) and colored filter (Color
Filter, CF) liquid crystal molecule is poured between substrate, and apply driving voltage on two plate bases to control the rotation of liquid crystal molecule
The light refraction of backlight module is out generated picture by direction.
With the continuous development of panel industry, the frame size of liquid crystal display panel is constantly by new challenge.Due to frame
(border) the compressible space of size is bigger, and industry has begun the driving for the frame that challenge width is 3.5mm at present
The frame that (Chip On Glass, the COG) panel (panel) of chip bonding on glass designs and width is 2.0mm
(Chip On FPC, COF) panel design of the driving chip bonding on flexible PCB, small mistake is constantly done in border width
Also many new technological challenges are faced in journey, wherein just there is the problem of polyimides (Polyimide, PI) alignment film coating.
PI alignment films are coated on TFT and CF substrates, play a part of controlling Liquid Crystal Molecules Alignment direction.And PI alignment films
It is to be formed by series of chemical by solvent, so PI alignment films can have certain mobility in forming process.
PI alignment films must have homogeneity, and when designing the coating of PI alignment films, PI alignment film spreading areas are more than the areas AA (viewing area)
Area, the display to ensure the areas AA is normal.
As shown in Figures 1 and 2, it is the schematic diagram of existing liquid crystal display panel, including：Adjacent viewing area 100 and side
Frame area 200, the rim area 200 include underlay substrate 201, the metal routing layer 202 on underlay substrate 201, are set to gold
Belong to the flatness layer (PLN) 203 on routing layer 202, the insulating layer 204 on flatness layer 203, the nation on insulating layer 204
Fixed (bongding) terminal 205, is set on ACF glue 206 anisotropic conductive adhesive paste (ACF glue) 206 on bonding terminal 205
Driving chip (IC) connection terminal 207 and the PI alignment films 208 on insulating layer 204；The flatness layer 203 has one
Groove 209, the bonding terminal 205 are formed in groove 209 and are walked with metal through the via 210 of insulating layer 204 by one
Line layer 202 is in contact；When the width of rim area 200 constantly becomes smaller, PI alignment films 208 can be because certain mobility be covered in nation
On fixed end 205, driving chip connection terminal 207 and effective contact area of bonding terminal 205 is caused to reduce, bonding impedance increases
Greatly, or even open circuit can occur, and then causes driving chip bonding bad, influence display effect.
Invention content
The purpose of the present invention is to provide a kind of liquid crystal display panels, prevent alignment film from being covered because of certain mobility
On bonding terminal, connection terminal and effective contact area of bonding terminal is avoided to reduce, so as to avoid liquid crystal display panel
Bonding is bad, improves display effect.
To achieve the above object, the present invention provides a kind of liquid crystal display panels, including：Adjacent viewing area and frame
Area；The rim area includes underlay substrate, the metal routing layer on underlay substrate, flat on metal routing layer
Layer, is set to nation at the insulating layer on flatness layer and metal routing layer, the bonding terminal on insulating layer and metal routing layer
Anisotropic conductive adhesive paste on of fixed end, the connection terminal on anisotropic conductive adhesive paste and the alignment film on insulating layer；
At least one choked flow groove is equipped between the viewing area and bonding terminal.
The choked flow groove is located on flatness layer.
The connection terminal is driving chip connection terminal or flexible PCB connection terminal.
The alignment film also covers viewing area；The area of the alignment film is more than the area of viewing area.
The flatness layer is equipped with a groove far from choked flow groove, and the bonding terminal is in the grooves and by one through exhausted
The via of edge layer is in contact with metal routing layer.
The angle of gradient all same of multiple choked flow grooves.
The angle of gradient of the choked flow groove is 50 °~70 °.
The side wall of the choked flow groove is smooth plane, arc surface or zigzag face.
The boundary of the alignment film is located at viewing area and choked flow groove far from the region between the side of viewing area.
The boundary of the alignment film is located at the choked flow groove of viewing area and close bonding terminal far between the side of viewing area
Region in.
Beneficial effects of the present invention：The present invention liquid crystal display panel include：Adjacent viewing area and rim area, the side
Frame area include underlay substrate, the metal routing floor on underlay substrate, the flatness layer on metal routing floor, be set to it is flat
Layer and the insulating layer on metal routing layer, the bonding terminal on insulating layer and metal routing layer, on bonding terminal
Anisotropic conductive adhesive paste, the connection terminal on anisotropic conductive adhesive paste and the alignment film on insulating layer, the viewing area
At least one choked flow groove is equipped between bonding terminal so that the alignment film in rim area can only flow into choked flow groove,
It prevents alignment film to be covered on bonding terminal because of certain mobility, connection terminal is avoided to be contacted with the effective of bonding terminal
Area reduces, bad so as to avoid liquid crystal display panel bonding, improves display effect, is advantageously implemented liquid crystal display panel
Narrow frame.
Description of the drawings
For further understanding of the features and technical contents of the present invention, it please refers to below in connection with the detailed of the present invention
Illustrate and attached drawing, however, the drawings only provide reference and explanation, is not intended to limit the present invention.
In attached drawing,
Fig. 1 is the vertical view of existing liquid crystal display panel；
Fig. 2 is the sectional view of existing liquid crystal display panel
Fig. 3 is the vertical view of one preferred embodiment of liquid crystal display panel of the present invention；
Fig. 4 is the sectional view of one preferred embodiment of liquid crystal display panel of the present invention；
Fig. 5 is the vertical view of another preferred embodiment of liquid crystal display panel of the present invention；
Fig. 6 is the sectional view of another preferred embodiment of liquid crystal display panel of the present invention.
Specific implementation mode
Further to illustrate the technological means and its effect of the invention taken, below in conjunction with the preferred implementation of the present invention
Example and its attached drawing are described in detail.
Fig. 3 and Fig. 6 is please referred to, liquid crystal display panel of the invention includes：Adjacent viewing area 10 and rim area 20；It is described
Rim area 20 includes underlay substrate 21, the metal routing layer 22 on underlay substrate 21, putting down on metal routing layer 22
Smooth layer 23, the insulating layer 24 on flatness layer 23 and metal routing layer 22, on insulating layer 24 and metal routing layer 22
Bonding terminal 25, the anisotropic conductive adhesive paste 26 on bonding terminal 25, the connection terminal 27 on anisotropic conductive adhesive paste 26
And the alignment film 28 on insulating layer 24；
At least one choked flow groove 231 is equipped between the viewing area 10 and bonding terminal 25.
It should be noted that since alignment film 28 has certain mobility in forming process, the present invention is in rim area
At least one choked flow groove 231 is arranged in 20 flatness layer 23 between viewing area 10 and bonding terminal 25 so that in rim area
20 alignment film 28 can only flow into choked flow groove 231, and alignment film 28 is prevented to be covered in bonding because of certain mobility
On terminal 25, connection terminal 27 and effective contact area of bonding terminal 25 is avoided to reduce, so as to avoid liquid crystal display panel
Bonding is bad, improves display effect.
Specifically, the choked flow groove 231 is located on flatness layer 23, since the thickness of flatness layer 23 is generally than other films
The thickness of layer is thicker, therefore opens up choked flow groove 231 on flatness layer 23 and be conducive to improve resistance flowing effect.
Specifically, liquid crystal display panel of the invention can be COG type liquid crystal display panels, i.e., the described connection terminal 27 is to drive
Dynamic chip connection terminal, the connection terminal 27 are electrically connected with bonding terminal 25 by anisotropic conductive adhesive paste 26, and driving chip is straight
The connection terminal 27 was connected to be electrically connected with bonding terminal 25.Since alignment film 28 is not present in the liquid crystal display panel of the present invention
The problem being covered on bonding terminal 25, therefore the width comparable of the rim area 20 of the liquid crystal display panel of the present invention is existing
The width of COG type liquid crystal display panels is that the frame of 3.5mm is narrower, further reduces 20 width of rim area.
Specifically, liquid crystal display panel of the invention can be COF type liquid crystal display panels, i.e., the described connection terminal 27 is soft
Property circuit board connecting terminal, flexible PCB is electrically connected with bonding terminal 25 by anisotropic conductive adhesive paste 26, driving chip shape
At on flexible PCB, it is electrically connected by flexible PCB and bonding terminal 25.Due to the liquid crystal display panel of the present invention
There is no alignment films 28 to be covered in the problem on bonding terminal 25, therefore the width of the rim area 20 of the liquid crystal display panel of the present invention
Degree is narrower than the frame that the width of existing COF types liquid crystal display panel is 2.0mm, and it is wide to further reduce rim area 20
Degree.
Specifically, the alignment film 28 also covers viewing area 10, i.e. alignment film 28 not only covers the also covering of viewing area 10
The rim area 20 of a part so that the area of alignment film 28 is more than the area of viewing area 10, ensures the normal of liquid crystal display panel
Display.
Specifically, the flatness layer 23 is equipped with a groove 232 far from choked flow groove 231, and the bonding terminal 25 is located at recessed
The via 241 for running through insulating layer 24 in slot 232 and by one is in contact with metal routing layer 22.
Specifically, the angle the gradient (taper) all same of multiple choked flow grooves 231.
Further, the angle of gradient of the choked flow groove 231 is 50 °~70 °, improves choked flow groove 231 and prevents alignment film
28 effects flowed to bonding terminal 25.
Specifically, the side wall of the choked flow groove 231 is smooth plane, arc surface or zigzag face, is further carried
The resistance flowing effect of high choked flow groove 231.
Preferably, the material of the alignment film 28 is polyimides.
Preferably, the material of the underlay substrate 21 is glass.
Specifically, as shown in Figures 3 and 4, it is a preferred embodiment of liquid crystal display panel of the invention, the flatness layer
23 set between viewing area 10 and bonding terminal 25 there are one choked flow groove 231.The boundary of the alignment film 28 is located at display
Area 10 and choked flow groove 231 are far from the region between 10 side of viewing area.
Specifically, as shown in Figures 5 and 6, it is another preferred embodiment of liquid crystal display panel of the invention, it is described flat
Layer 23 set positioned at viewing area 10 and bonding terminal 25 between there are two choked flow groove 231, when alignment film 28 is from first choked flow ditch
When slot 231 overflows, second choked flow groove 231 continues to stop that alignment film 28 is flowed on bonding terminal 25.The alignment film 28
Boundary be located at viewing area 10 and close to bonding terminal 25 choked flow groove 231 far from the region between 10 side of viewing area.
Certainly, the present invention does not limit the quantity of choked flow groove 231, as long as can reach blocking alignment film 28 is flowed into bonding end
Technique effect on son 25.
In conclusion the liquid crystal display panel of the present invention includes：Adjacent viewing area and rim area, the rim area include
Underlay substrate, the flatness layer on metal routing layer, is set to flatness layer and metal at the metal routing layer on underlay substrate
Insulating layer on routing layer, the bonding terminal on insulating layer and metal routing layer, the anisotropy on bonding terminal are led
Electric glue, the connection terminal on anisotropic conductive adhesive paste and the alignment film on insulating layer, the viewing area and bonding end
At least one choked flow groove is equipped between son so that the alignment film in rim area can only flow into choked flow groove, prevent orientation
Film is covered in because of certain mobility on bonding terminal, and connection terminal and effective contact area of bonding terminal is avoided to subtract
It is small, it is bad so as to avoid liquid crystal display panel bonding, display effect is improved, the narrow side of liquid crystal display panel is advantageously implemented
Frame.
The above for those of ordinary skill in the art can according to the technique and scheme of the present invention and technology
Other various corresponding change and deformations are made in design, and all these change and distortions should all belong to the claims in the present invention
Protection domain.
Claims (10)
1. a kind of liquid crystal display panel, which is characterized in that including：Adjacent viewing area (10) and rim area (20)；The frame
Area (20) includes underlay substrate (21), the metal routing floor (22) being set on underlay substrate (21), is set to metal routing floor (22)
On flatness layer (23), be set to flatness layer (23) and insulating layer (24) on metal routing layer (22), be set to insulating layer (24) and
Bonding terminal (25) on metal routing layer (22), is set to different side at the anisotropic conductive adhesive paste (26) on bonding terminal (25)
Property conducting resinl (26) on connection terminal (27) and the alignment film (28) on insulating layer (24)；
At least one choked flow groove (231) is equipped between the viewing area (10) and bonding terminal (25).
2. liquid crystal display panel as described in claim 1, which is characterized in that the choked flow groove (231) is located at flatness layer
(23) on.
3. liquid crystal display panel as described in claim 1, which is characterized in that the connection terminal (27) connects for driving chip
Terminal or flexible PCB connection terminal.
4. liquid crystal display panel as described in claim 1, which is characterized in that the alignment film (28) also covers viewing area
(10)；The area of the alignment film (28) is more than the area of viewing area (10).
5. liquid crystal display panel as described in claim 1, which is characterized in that the flatness layer (23) is far from choked flow groove
(231) it is equipped with a groove (232), the bonding terminal (25) is located in groove (232) and by one through insulating layer (24)
Via (241) is in contact with metal routing layer (22).
6. liquid crystal display panel as described in claim 1, which is characterized in that the angle of gradient of multiple choked flow grooves (231) is homogeneous
Together.
7. liquid crystal display panel as described in claim 1, which is characterized in that the angle of gradient of the choked flow groove (231) is 50 °
~70 °.
8. liquid crystal display panel as described in claim 1, which is characterized in that the side wall of the choked flow groove (231) is smooth
Plane, arc surface or zigzag face.
9. liquid crystal display panel as described in claim 1, which is characterized in that the boundary of the alignment film (28) is located at viewing area
(10) and choked flow groove (231) is far from the region between viewing area (10) side.
10. liquid crystal display panel as described in claim 1, which is characterized in that the boundary of the alignment film (28) is located at display
The choked flow groove (231) of area (10) and close bonding terminal (25) is far from the region between viewing area (10) side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810482876.2A CN108761932A (en) | 2018-05-18 | 2018-05-18 | Liquid crystal display panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810482876.2A CN108761932A (en) | 2018-05-18 | 2018-05-18 | Liquid crystal display panel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108761932A true CN108761932A (en) | 2018-11-06 |
Family
ID=64007418
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810482876.2A Pending CN108761932A (en) | 2018-05-18 | 2018-05-18 | Liquid crystal display panel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108761932A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109828399A (en) * | 2019-03-18 | 2019-05-31 | 武汉华星光电技术有限公司 | Display panel and display device |
| CN109917596A (en) * | 2019-03-21 | 2019-06-21 | 厦门天马微电子有限公司 | A kind of display panel and display device |
| CN110277412A (en) * | 2019-07-04 | 2019-09-24 | 武汉华星光电技术有限公司 | Display panel and preparation method thereof |
| CN110376806A (en) * | 2019-07-16 | 2019-10-25 | 惠州市华星光电技术有限公司 | Flip chip structure and display |
| CN111781766A (en) * | 2020-07-07 | 2020-10-16 | 深圳市华星光电半导体显示技术有限公司 | Display panel and manufacturing method thereof |
| CN112558343A (en) * | 2020-12-15 | 2021-03-26 | 武汉华星光电技术有限公司 | Array substrate and display panel |
| WO2021114405A1 (en) * | 2019-12-11 | 2021-06-17 | 武汉华星光电技术有限公司 | Display panel and display device |
| WO2021168943A1 (en) * | 2020-02-25 | 2021-09-02 | Tcl华星光电技术有限公司 | Tft liquid crystal display device |
| US11183520B2 (en) | 2019-07-04 | 2021-11-23 | Wuhan China Star Optoelectronics Technology Co., Ltd. | Display panel with insulating stripes in non-display area and method of fabricating thereof |
| CN115268135A (en) * | 2022-07-29 | 2022-11-01 | 福州京东方光电科技有限公司 | Display panel and display device |
| CN116699911A (en) * | 2023-08-03 | 2023-09-05 | 惠科股份有限公司 | Display panel, bonding method of display panel and display device |
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Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109828399A (en) * | 2019-03-18 | 2019-05-31 | 武汉华星光电技术有限公司 | Display panel and display device |
| WO2020186574A1 (en) * | 2019-03-18 | 2020-09-24 | 武汉华星光电技术有限公司 | Display panel and display device |
| CN109917596A (en) * | 2019-03-21 | 2019-06-21 | 厦门天马微电子有限公司 | A kind of display panel and display device |
| CN109917596B (en) * | 2019-03-21 | 2021-09-28 | 厦门天马微电子有限公司 | Display panel and display device |
| CN110277412B (en) * | 2019-07-04 | 2021-09-03 | 武汉华星光电技术有限公司 | Display panel and manufacturing method thereof |
| CN110277412A (en) * | 2019-07-04 | 2019-09-24 | 武汉华星光电技术有限公司 | Display panel and preparation method thereof |
| US11183520B2 (en) | 2019-07-04 | 2021-11-23 | Wuhan China Star Optoelectronics Technology Co., Ltd. | Display panel with insulating stripes in non-display area and method of fabricating thereof |
| US11309260B2 (en) | 2019-07-16 | 2022-04-19 | Huizhou China Star Optoelectronics Technology Co., Ltd. | Chip on film structure and display device |
| CN110376806A (en) * | 2019-07-16 | 2019-10-25 | 惠州市华星光电技术有限公司 | Flip chip structure and display |
| WO2021114405A1 (en) * | 2019-12-11 | 2021-06-17 | 武汉华星光电技术有限公司 | Display panel and display device |
| WO2021168943A1 (en) * | 2020-02-25 | 2021-09-02 | Tcl华星光电技术有限公司 | Tft liquid crystal display device |
| CN111781766A (en) * | 2020-07-07 | 2020-10-16 | 深圳市华星光电半导体显示技术有限公司 | Display panel and manufacturing method thereof |
| CN111781766B (en) * | 2020-07-07 | 2023-03-17 | 深圳市华星光电半导体显示技术有限公司 | Display panel and manufacturing method thereof |
| CN112558343A (en) * | 2020-12-15 | 2021-03-26 | 武汉华星光电技术有限公司 | Array substrate and display panel |
| CN112558343B (en) * | 2020-12-15 | 2022-07-12 | 武汉华星光电技术有限公司 | Array substrate and display panel |
| CN115268135A (en) * | 2022-07-29 | 2022-11-01 | 福州京东方光电科技有限公司 | Display panel and display device |
| CN115268135B (en) * | 2022-07-29 | 2023-11-28 | 福州京东方光电科技有限公司 | Display panel and display device |
| CN116699911A (en) * | 2023-08-03 | 2023-09-05 | 惠科股份有限公司 | Display panel, bonding method of display panel and display device |
| CN116699911B (en) * | 2023-08-03 | 2023-11-14 | 惠科股份有限公司 | Display panel, bonding method of display panel and display device |
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