CN105739141B - Flexible circuit board, liquid crystal display module and terminal - Google Patents
Flexible circuit board, liquid crystal display module and terminal Download PDFInfo
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- CN105739141B CN105739141B CN201610281571.6A CN201610281571A CN105739141B CN 105739141 B CN105739141 B CN 105739141B CN 201610281571 A CN201610281571 A CN 201610281571A CN 105739141 B CN105739141 B CN 105739141B
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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
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/13306—Circuit arrangements or driving methods for the control of single liquid crystal cells
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Liquid Crystal (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The invention relates to a flexible circuit board, a liquid crystal display module and a terminal, wherein the flexible circuit board comprises a main body, a first branch and a second branch, the first branch and the second branch are both connected to the main body, and the first branch and the second branch are spaced; the main body is connected with a backlight lamp; the first branch can be bent relative to the main body, and one end of the first branch, which is far away from the main body, is used for connecting a key lamp; the second branch can be bent relative to the main body, and one end, far away from the main body, of the second branch is used for welding the main board. The flexible circuit board can be connected with both the key lamp and the backlight lamp, so that a main board of the terminal can provide electric signals for the backlight lamp and the key lamp through the flexible circuit board, the flexible circuit board is simple in structure, occupies a small using space, and reduces production cost.
Description
Technical Field
The invention relates to the field of electronic equipment, in particular to a flexible circuit board, a liquid crystal display module and a terminal.
Background
The button structure of the liquid crystal display module of present cell-phone is realized through the flexible circuit board of key lamp and electricity connection key lamp, and is concrete, and the key lamp is located the button flexible circuit board, and the button flexible circuit board passes through the double faced adhesive tape bonding on the touch-sensitive screen, and the button flexible circuit board links together through the mainboard of button pad or button grafting golden finger and cell-phone. The key lamp is controlled to emit light through the mainboard through the key flexible circuit board, the light of the key lamp uniformly penetrates through the keys on the touch screen through the light guide plate, and then the key position can be seen to shine in the front of the front-view liquid crystal display module. However, in this structure, the key flexible circuit board is independently connected to the motherboard and is only responsible for providing electrical signals to the key lamp, and the motherboard needs to be additionally provided with a backlight flexible circuit board connected to the backlight of the liquid crystal display module, so as to provide electrical signals to the backlight through the backlight flexible circuit board. The backlight is fixed on a backlight plate of the liquid crystal display module and provides light to the backlight plate. At present, the liquid crystal display module with the structure needs to use two independent flexible circuit boards to be connected with the backlight and the key lamp respectively, so that the structure of the flexible circuit board of the liquid crystal display module is complex, and the flexible circuit board occupies a large using space.
Disclosure of Invention
The invention provides a flexible circuit board with a simple structure, a liquid crystal display module and a terminal.
The invention provides a flexible circuit board, which comprises a main body, a first branch and a second branch, wherein the first branch and the second branch are both connected to the main body and are spaced; the main body is connected with a backlight lamp; the first branch can be bent relative to the main body, and one end of the first branch, which is far away from the main body, is used for connecting a key lamp; the second branch can be bent relative to the main body, and one end, far away from the main body, of the second branch is used for welding the main board.
The invention also provides a liquid crystal display module which comprises any one of the flexible circuit boards, a touch panel, a liquid crystal display panel, a key lamp and a backlight lamp; the touch panel comprises a key touch area and a display touch area connected with the key touch area; the liquid crystal display panel is correspondingly attached to the display touch area; the key lamp is fixed in the key touch area and is positioned on the same side of the touch panel with the liquid crystal display panel; the backlight lamp is fixed on the side, opposite to the touch panel, of the liquid crystal display panel; the main body is electrically connected with the backlight lamp, and the first branch is electrically connected with the key lamp.
The invention further provides a terminal, wherein the terminal further comprises the liquid crystal display module, the terminal further comprises a main board and a shell, the main board and the liquid crystal display module are fixed in the shell, and the main board is electrically connected with the second branch.
The flexible circuit board, the liquid crystal display module and the terminal are used for connecting a backlight lamp on the main body; the first branch can be bent relative to the main body, and one end of the first branch, which is far away from the main body, is used for connecting a key lamp; the second branch can be bent relative to the main body, one end, far away from the main body, of the second branch is used for welding the main board, so that the flexible circuit board can be connected with the key lamp and the backlight lamp, the main board of the terminal can provide electric signals for the backlight lamp and the key lamp through the flexible circuit board, the flexible circuit board is simple in structure, small in occupied use space and low in production cost.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic diagram of a flexible circuit board provided by the present invention;
FIG. 2 is an exploded view of a liquid crystal display module according to the present invention;
FIG. 3 is a schematic cross-sectional view of a liquid crystal display module according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
Referring to fig. 1, fig. 2 and fig. 3 together, the liquid crystal display module 100 according to the present invention includes a flexible circuit board 10, a touch panel 20, a liquid crystal display panel 30, a key lamp 40 and a backlight 50. The flexible circuit board 10 includes a main body 11, a first branch 12 and a second branch 13, wherein the first branch 12 and the second branch 13 are both connected to the main body 11, and the first branch 12 and the second branch 13 are spaced apart. The touch panel 20 includes a key touch area 21 and a display touch area 22 connected to the key touch area 21. The liquid crystal display panel 30 is correspondingly attached to the display touch area 22. The key lamp 40 is fixed to the key touch area 21 and located on the same side of the touch panel 20 as the liquid crystal display panel 30. The backlight 50 is fixed on the liquid crystal display panel 30 opposite to the touch panel 20. The main body 11 is electrically connected to the backlight 50, and the first branch 12 is electrically connected to the key lamp 30. It can be understood that the liquid crystal display module 100 is applied to a terminal, and the terminal may be a mobile phone, a tablet computer, a notebook computer, or the like.
A backlight 50 connected to the main body 11; the first branch 12 can be bent relative to the main body 11, and one end of the first branch 12 away from the main body 11 is used for connecting a key lamp 40. The second branch 13 can be bent relative to the main body 11, and one end of the second branch 13, which is far away from the main body 11, is used for welding a main board, so that the flexible circuit board 10 can be connected with both the key lamp 40 and the backlight lamp 50, and further, the main board of the terminal can provide electric signals to the backlight lamp 50 and the key lamp 40 through the flexible circuit board 10, so that the flexible circuit board 10 has a simple structure, occupies a small use space, and reduces production cost.
The flexible circuit board 10 is formed by laminating a flexible substrate, a copper foil layer, and a cover film in this order. The copper foil layer constitutes a conductive circuit electrically connecting the key lamp 40 and the backlight 50. The first branch 12 and the second branch 13 are both integral with the body 11. The key lamp 40 penetrates through the cover film of the first branch 12 and is welded on the copper foil layer of the first branch 12; the backlight 50 penetrates through the cover film of the main body 11 and is welded on the copper foil layer of the main body 11; the pad 131 of the second branch 13 is electrically connected to the key lamp 40 and the backlight 50 through a copper foil layer, and the pad 131 is electrically connected to the main board of the terminal. And the main board of the terminal is electrically connected to the key lamp 40 and the backlight 50 through the flexible circuit board 10.
The touch panel 20 is formed by integrating a touch layer in a glass layer. The key touch area 21 and the display touch area 22 are respectively located at an upper position and a lower position of the touch panel 20 in the length direction. The display touch area 22 is used for assisting the liquid crystal display surface 30 to collect touch information so as to realize a human-computer interaction function. The key touch area 21 is used for collecting key touch information and implementing a manual instruction operation function. In other embodiments, the touch panel 20 may be formed by depositing a touch layer on one side of a glass layer, and the key lamp 40 and the liquid crystal display panel 30 are both attached to the touch layer of the touch panel 20.
The liquid crystal display panel 30 is used for displaying pictures, and the liquid crystal display panel 30 is composed of an upper base layer, a transistor layer and a lower base layer which are sequentially stacked. The upper base layer is attached to the display touch area 22. After the backlight 50 provides a backlight to the liquid crystal display panel 30, the liquid crystal display panel 30 is assisted in image formation.
The key lamp 40 and the backlight 50 are both LED lamps. The key lamp 40 provides light to the key touch area 21, thereby identifying a key position of the key touch area 21. The backlight 50 provides a backlight to the liquid crystal display panel 30, so that the liquid crystal display panel 30 can be clearly imaged.
Further, the liquid crystal display module 100 further includes a light guide plate 60, the light guide plate 60 is attached to the key touch area 21, and the key lamp 40 is attached to the light guide plate 60. After the key lamp 40 is turned on, the light of the key lamp 40 is transmitted into the light guide plate 60, and the light guide plate 60 transmits the light of the key lamp 40 to the key touch area 21, so that the key touch area 21 is illuminated, and a user can conveniently operate on the key touch area 21. The light of the key lamp 40 is transmitted by the light guide plate 60, so that the light passing through the key touch area 21 is soft, energy-saving and durable.
The liquid crystal display module 100 further includes a backlight plate 70, the backlight plate 70 is correspondingly attached to the liquid crystal display panel 30 and the opposite side of the touch panel 20, and the backlight 50 is attached to the backlight plate 70. When the backlight 50 is turned on, light from the backlight 50 enters from one side of the backlight 70 and exits from the backlight 70 while being attached to one surface of the liquid crystal display panel 30, thereby providing a light background for the liquid crystal display panel 30.
Specifically, the light guide plate 60 is in a strip shape, and the length direction of the light guide plate 60 is parallel to the width direction of the touch panel 20; the number of the key lamps 40 is two, and the two key lamps 40 are respectively attached to two ends of the light guide plate 60 in the length direction; the number of the backlight lamps 50 is plural, and the plural backlight lamps 50 are arranged at equal intervals along the width direction of the backlight plate 70. The main body 11 is in a strip shape, the length direction of the main body 11 is parallel to the width direction of the backlight 70, and the main body 11 is attached to the plurality of backlights 70; the number of the first branches 12 is two, the two first branches 12 are respectively and correspondingly connected with the two key lamps 40, the two first branches 12 are respectively connected to two ends of the main body 11 in the length direction, and the second branch 13 is located between the two first branches 11. The light guide plate 60 includes two end surfaces (not labeled) in the length direction, and the key lamp 40 is attached to the end surfaces. Therefore, the light of the key lamp 40 enters from the end surface and exits from the surface of the light guide plate 60 attached to the key touch area 21. The two key lamps 40 are used for providing light to the two ends of the light guide plate 60, so that the light emitted from the light guide plate 60 is uniform. The two second branches 13 respectively provide an electrical signal to the two key lamps 40, and simultaneously control the on/off of the two key lamps 40, so that the flexible circuit board 10 has a simple structure. The plurality of backlights 50 are arranged at one end of the backlight 70 in the longitudinal direction, so that the backlight 70 emits light uniformly. The second branch 13 is located between the two first branches 12, so that the flexible circuit board 10 has a reduced size, a simple structure, a reduced use space of the flexible circuit board 10, and convenience for connecting the flexible circuit board 10 to a terminal main board.
Further, the key touch area 21 is coated with an ink layer (not shown), the ink layer is provided with a plurality of patterned keys 211, the light guide plate 60 covers the plurality of keys, and the plurality of keys 211 transmit light of the light guide plate 60. The plurality of keys 211 may be formed by etching the ink layer, the ink layer blocks light of the light guide plate 60, and the keys 211 penetrate the light of the light guide plate 60, so that a patterned light emitting area can be displayed on the other side of the touch panel 20, and a key position of the key touch area 21 is identified, thereby facilitating user operation. More specifically, the first branch 12 is attached to the key touch area 21 by using an adhesive, and the key lamp 40 is attached to the side of the first branch 12 opposite to the touch panel 20, so that the flexible circuit board 10 and the touch panel 20 are stable in structure. Meanwhile, the main body 11 and the backlight 50 are integrated in the backlight 70, so that the flexible circuit board 100 and the backlight 70 are structurally stable. The backlight plate 70 is bonded to the lower substrate of the lcd panel 30 by an optical adhesive, so that the lcd module 100 has a stable structure.
The invention further provides a terminal, which comprises the liquid crystal display module 100, a main board (not shown) and a housing (not shown), wherein the main board and the liquid crystal display module 100 are fixed in the housing, the main board is electrically connected with the second branch 13, and the main board controls the key lamp 40 and the backlight lamp 50 to be turned off or on through the flexible circuit board 10. The terminal can be a mobile phone, a tablet computer or a notebook computer and the like.
The flexible circuit board, the liquid crystal display module and the terminal are used for connecting a backlight lamp on the main body; the first branch can be bent relative to the main body, and one end of the first branch, which is far away from the main body, is used for connecting a key lamp; the second branch can be bent relative to the main body, one end, far away from the main body, of the second branch is used for welding the main board, so that the flexible circuit board can be connected with the key lamp and the backlight lamp, the main board of the terminal can provide electric signals for the backlight lamp and the key lamp through the flexible circuit board, the flexible circuit board is simple in structure, small in occupied use space and low in production cost.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.
Claims (10)
1. A flexible circuit board, comprising a main body, a first branch and a second branch, wherein the first branch and the second branch are both connected to the main body, and the first branch and the second branch are spaced apart; the main body is connected with a backlight lamp; the first branch extends from one long side of the main body to the direction far away from the main body; the first branch can be bent relative to the main body, and one end of the first branch, which is far away from the main body, is used for connecting a key lamp; the second branch can be bent relative to the main body, and one end, far away from the main body, of the second branch is used for welding the main board; the key lamp and the backlight lamp are respectively attached to two opposite sides of the flexible circuit board, one side of the first branch, which is away from the key lamp, is used for being attached to the touch panel, and one side of the main body, which is connected with the backlight lamp, faces the touch panel.
2. The flexible circuit board of claim 1, wherein the number of the first branches is two, the two first branches are respectively connected to two ends of the main body in the length direction, and the second branch is located between the two first branches.
3. A liquid crystal display module is characterized by comprising the flexible circuit board of any one of claims 1-2, and further comprising a touch panel, a liquid crystal display panel, a key lamp and a backlight lamp; the touch panel comprises a key touch area and a display touch area connected with the key touch area; the liquid crystal display panel is correspondingly attached to the display touch area; the key lamp is fixed in the key touch area and is positioned on the same side of the touch panel with the liquid crystal display panel; the backlight lamp is fixed on the side, opposite to the touch panel, of the liquid crystal display panel; the main body is electrically connected with the backlight lamp, and the first branch is electrically connected with the key lamp.
4. The LCD module as recited in claim 3, further comprising a light guide plate, wherein the light guide plate is attached to the key touch area, and the key light is attached to the light guide plate.
5. The liquid crystal display module of claim 4, further comprising a backlight plate, wherein the backlight plate is correspondingly attached to the liquid crystal display panel opposite to the touch panel, and the backlight is attached to the backlight plate.
6. The LCD module as recited in claim 5, wherein the light guide plate is strip-shaped, and the length direction of the light guide plate is parallel to the width direction of the touch panel; the number of the key lamps is two, and the two key lamps are respectively attached to two ends of the light guide plate in the length direction; the number of the backlight lamps is multiple, and the plurality of backlight lamps are arranged at equal intervals along the width direction of the backlight plate; the main body is strip-shaped, the length direction of the main body is parallel to the width direction of the backlight plate, and the main body is attached to the plurality of backlight lamps; the number of the first branches is two, the two first branches are respectively and correspondingly connected with the two key-press lamps, the two first branches are respectively connected with the two ends of the length direction of the main body, and the second branch is located between the two first branches.
7. The LCD module as recited in claim 6, wherein the key touch area is coated with an ink layer, the ink layer is provided with a plurality of patterned keys, the light guide plate covers the plurality of keys, and the plurality of keys transmit light from the light guide plate.
8. The LCD module as recited in claim 3, wherein the first branch is attached to the key touch area, and the key lamp is attached to a side of the first branch opposite to the touch panel.
9. The liquid crystal display module of claim 3, wherein the body and the backlight are integrated into the backlight.
10. A terminal, characterized in that the terminal further comprises the liquid crystal display module set according to any one of claims 3 to 9, the terminal further comprises a main board and a housing, the main board and the liquid crystal display module set are both fixed in the housing, and the main board is electrically connected to the second branch.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610281571.6A CN105739141B (en) | 2016-04-29 | 2016-04-29 | Flexible circuit board, liquid crystal display module and terminal |
| PCT/CN2016/084093 WO2017185465A1 (en) | 2016-04-29 | 2016-05-31 | Flexible circuit board, liquid crystal display module, and terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610281571.6A CN105739141B (en) | 2016-04-29 | 2016-04-29 | Flexible circuit board, liquid crystal display module and terminal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105739141A CN105739141A (en) | 2016-07-06 |
| CN105739141B true CN105739141B (en) | 2020-01-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610281571.6A Active CN105739141B (en) | 2016-04-29 | 2016-04-29 | Flexible circuit board, liquid crystal display module and terminal |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN105739141B (en) |
| WO (1) | WO2017185465A1 (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106293292B (en) * | 2016-07-29 | 2019-07-12 | 武汉华星光电技术有限公司 | A kind of mobile device |
| CN107013839A (en) * | 2017-03-07 | 2017-08-04 | 捷开通讯(深圳)有限公司 | Backlight module, the assemble method with the equipment of display function and the equipment |
| CN107102474B (en) | 2017-06-07 | 2021-01-26 | 京东方科技集团股份有限公司 | Backlight lamp strip, backlight unit and display device |
| CN107360669A (en) * | 2017-08-17 | 2017-11-17 | 信利半导体有限公司 | A kind of backlight FPC and the display device with the FPC |
| CN108803164B (en) * | 2018-05-31 | 2021-05-14 | 厦门天马微电子有限公司 | Display device |
| CN108462822B (en) * | 2018-06-02 | 2024-03-19 | Oppo广东移动通信有限公司 | Light sensing component and electronic equipment |
| CN112817374A (en) * | 2019-11-18 | 2021-05-18 | 英业达科技有限公司 | Notebook computer with improved application space inside display device shell |
| CN112148153A (en) | 2020-10-21 | 2020-12-29 | 京东方科技集团股份有限公司 | Touch control display device |
| CN112946954B (en) * | 2021-02-23 | 2023-02-03 | 维沃移动通信有限公司 | Display module and electronic equipment |
| CN113376907A (en) * | 2021-06-11 | 2021-09-10 | 四川京龙光电科技有限公司 | LCD module with integrated function |
| CN114527598B (en) * | 2022-02-25 | 2023-11-28 | 武汉华星光电技术有限公司 | Display module, manufacturing method thereof and mobile terminal |
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| CN101706075A (en) * | 2009-12-07 | 2010-05-12 | 友达光电股份有限公司 | Display device with double-sided display function and backlight module thereof |
| CN203560778U (en) * | 2013-06-28 | 2014-04-23 | 上海天马微电子有限公司 | Backlight assembly and display device |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN105739141A (en) | 2016-07-06 |
| WO2017185465A1 (en) | 2017-11-02 |
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