CN107172802B - Simple display screen - Google Patents
Simple display screen Download PDFInfo
- Publication number
- CN107172802B CN107172802B CN201710477009.5A CN201710477009A CN107172802B CN 107172802 B CN107172802 B CN 107172802B CN 201710477009 A CN201710477009 A CN 201710477009A CN 107172802 B CN107172802 B CN 107172802B
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- CN
- China
- Prior art keywords
- fpc
- liquid crystal
- crystal display
- backlight module
- display screen
- 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
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/0277—Bendability or stretchability details
- H05K1/028—Bending or folding regions of flexible printed circuits
-
- 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
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/0296—Conductive pattern lay-out details not covered by sub groups H05K1/02 - H05K1/0295
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/18—Printed circuits structurally associated with non-printed electric components
- H05K1/189—Printed circuits structurally associated with non-printed electric components characterised by the use of a flexible or folded printed circuit
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/05—Flexible printed circuits [FPCs]
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
- H05K2201/10007—Types of components
- H05K2201/10128—Display
- H05K2201/10136—Liquid Crystal display [LCD]
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Telephone Set Structure (AREA)
Abstract
The invention provides a simple display screen, which comprises a liquid crystal display, a backlight module and an FPC, wherein the backlight module is positioned below the liquid crystal display, the FPC is integrated with the backlight module and a circuit of the liquid crystal display, and the FPC is positioned at one end of the backlight module and one end of the liquid crystal display; the FPC is provided with a U-shaped annular notch, and pins connected with display screen glass of the liquid crystal display are arranged on the inner side of the bottom of the U-shaped annular notch; according to the invention, the welding procedures of assembling the FPC of the liquid crystal display and the FPC of the backlight module are reduced, the welding cost is saved, the elastic force of the FPC in the bending process is reduced in the welding process of the FPC and the mobile phone main board, the FPC is firmly fixed in the welding process, and the welding reject ratio is reduced.
Description
Technical Field
The invention relates to the field of mobile phone manufacturing, in particular to a simple display screen.
Background
The display screen of the conventional mobile phone generally includes a liquid crystal display 1', a backlight module 2', a flexible circuit board 3 'and a flexible circuit board 4' of the backlight module, and fig. 1 is a schematic structural diagram of the display screen of the conventional mobile phone, and please refer to fig. 1. The flexible printed circuit board (Flexible Printed Circuit, FPC) is a flexible printed circuit board having high reliability, excellent in flexibility, and has the characteristics of high wiring density, light weight, thin thickness, and good flexibility.
The A, K welding leg of a backlight source is designed on the backlight module FPC of the existing mobile phone, the A, K welding leg on the backlight module FPC is required to be welded to the liquid crystal display FPC in the assembly process of the display screen, then the liquid crystal display FPC is welded with the mobile phone motherboard, in order to ensure the welding quality, before the liquid crystal display FPC is welded with the mobile phone motherboard, the liquid crystal display FPC is required to be fixed on the motherboard, in the prior art, the liquid crystal display FPC is generally fixed with the motherboard by double-sided adhesive tape after being bent, and as the radian of the bending part of the liquid crystal display FPC is small and the elastic force is large, the liquid crystal display FPC is not fixed firmly with the mobile phone motherboard, the welding quality of the liquid crystal display FPC and the mobile phone motherboard is directly influenced, and the display performance of the mobile phone display screen is influenced.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides the simple display screen which has a compact structure, is simple to assemble, does not need to additionally weld a backlight module FPC, and can improve the welding quality of the FPC of a liquid crystal display.
The invention is realized by the following technical scheme: the simple display screen comprises a liquid crystal display, a backlight module and an FPC, wherein the backlight module is positioned below the liquid crystal display, the FPC is integrated with the backlight module and a circuit of the liquid crystal display, and the FPC is positioned at one end of the backlight module and one end of the liquid crystal display; the FPC is provided with a U-shaped annular notch, and pins connected with display screen glass of the liquid crystal display are arranged on the inner side of the bottom of the U-shaped annular notch.
In an embodiment, the output connection of the FPC is a connection mode compatible with serial connection and parallel connection.
In an embodiment, the FPC further includes a backlight source integrated with the backlight module.
In an embodiment, the backlight is an LED light source.
In an embodiment, the LED light source is a patch LED lamp.
In one embodiment, the FPC is provided with a copper exposure area.
In one embodiment, the substrate of the FPC is preferably polyimide.
In one embodiment, the FPC is a single-layer flexible circuit board.
In one embodiment, the FPC is a single-layer flexible circuit board.
According to the embodiment of the invention, the FPC and the backlight module FPC are integrated into one FPC, so that the welding process of assembling the FPC and the backlight module FPC is reduced, the welding cost is saved, and the U-shaped annular notch is arranged on the FPC, so that the elastic force of the FPC in the bending process is reduced in the welding process of the FPC and the mobile phone main board, the FPC is firmly fixed in the welding process, the welding reject ratio is reduced, the output connection of the FPC is in a serial port connection and parallel port connection compatible connection mode, and the universal range of the display screen is enlarged.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a conventional mobile phone display screen;
FIG. 2 is a schematic diagram of a simplified display screen according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a LCD and FPC of a simple display according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a backlight module structure of a simple display screen according to an embodiment of the present invention;
FIG. 5 is a schematic view of the front structure of an FPC of a simple display screen according to an embodiment of the present invention;
fig. 6 is a schematic view of the reverse structure of the FPC of the simple display according to the embodiment of the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of 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, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
FIG. 2 is a schematic diagram of a simplified display screen according to an embodiment of the present invention; FIG. 3 is a schematic diagram of a LCD and FPC of a simple display according to an embodiment of the present invention; FIG. 4 is a schematic diagram of a backlight module structure of a simple display screen according to an embodiment of the present invention; FIG. 5 is a schematic view of the front structure of an FPC of a simple display screen according to an embodiment of the present invention; fig. 6 is a schematic view of the reverse structure of the FPC of the simple display according to the embodiment of the present invention.
Referring to fig. 2-6, the simple display screen of the present embodiment includes a liquid crystal display 1, a backlight module 2, and an FPC3, wherein the backlight module 2 is located below the liquid crystal display 1, the FPC3 is integrated with the backlight module 2 and the circuits of the liquid crystal display 1, and the FPC3 is located at one end of the backlight module 2 and one end of the liquid crystal display 1; the FPC is provided with a U-shaped annular notch 4, and pins 5 connected with display screen glass of the liquid crystal display are arranged on the inner side of the bottom of the U-shaped annular notch 4.
According to the invention, the liquid crystal display FPC and the backlight module FPC are integrated into one FPC3, so that the material cost is saved, the backlight module FPC is not required to be welded to the liquid crystal display FPC, the assembly procedure is reduced, the welding cost is saved, the U-shaped annular notch 4 is arranged on the FPC3, the FPC3 is downwards bent to be welded with a mobile phone main board in the welding process of the FPC, and the FPC at the inner side part of the U-shaped annular notch 4 is upwards bent to be welded with display screen glass. The area of the bending part of the FPC, which is bent upwards and downwards, is reduced, so that the elasticity of the bending part is reduced, the FPC3 is firmly fixed in the welding process, the reject ratio of welding is reduced, and the service life of the display screen is prolonged.
Preferably, the output connection of the FPC3 is a connection mode compatible with serial connection and parallel connection. Table 1 is a table for defining output pins of a simple display screen FPC according to an embodiment of the present invention, referring to fig. 2 and table 1, in this embodiment, output pins 8 of FPC3 are 37pin connectors, and a serial port or parallel port connection mode is implemented by setting IM2 voltage (9 pin), and the operation mode is selected as follows: when IM2 = 0, the output connection of FPC is parallel port 8 bits, DB0-DB7 is used; when im2=1, the output connection of the FPC is a three-wire two-channel serial port, DB0-DB7 are grounded, where 0 is ground and 1 is the voltage of IOVCC. The invention adopts a connection mode compatible with serial port connection and parallel port connection, can be used when the external mobile phone main board is in a serial port mode and a parallel port mode, and expands the application range of the display screen.
Table 1 is a definition table of output pins of a simple display screen FPC according to an embodiment of the present invention
| pin | Parallel port definition | Serial port definition |
| 1 | GND | GND |
| 2 | VCC(2.8) | VCC(2.8) |
| 3 | IOVCC(1.8V/2.8V) | IOVCC(1.8V/2.8V) |
| 4 | /CS | /CS |
| 5 | RS | /SCX |
| 6 | WR | DATA1 |
| 7 | /RD | /RD(IOVCC) |
| 8 | /RESET | /RESET |
| 9 | IM2(GND) | IM2(IOVCC) |
| 10 | DATA0(GND) | DATA0 (Special for serial port) |
| 11 | GND | GND |
| 12 | GND | GND |
| 13 | GND | GND |
| 14 | GND | GND |
| 15 | GND | GND |
| 16 | GND | GND |
| 17 | DB0 | GND |
| 18 | DB1 | DB1(GND) |
| 19 | DB2 | DB2(GND) |
| 20 | DB3 | DB3(GND) |
| 21 | DB4 | DB4(GND) |
| 22 | DB5 | DB5(GND) |
| 23 | DB6 | DB6(GND) |
| 24 | DB7 | DB7(GND) |
| 25 | LCM-TD(0.8V) | LCM-TD(0.8V) |
| 26 | TE | TE |
| 27 | NC | NC |
| 28 | NC | NC |
| 29 | NC | NC |
| 30 | LED+ | LED+ |
| 31 | LED- | LED- |
| 32 | LED- | LED- |
| 33 | LED- | LED- |
| 34 | LED- | LED- |
| 35 | GND | GND |
| 36 | GND | GND |
| 37 | NC | NC |
Preferably, the FPC3 is further integrated with a backlight source 6 of the backlight module, the backlight source 6 of the backlight module is integrated to the FPC3, and the FPC3 is compact in arrangement structure, and materials are saved.
Preferably, the backlight source 3 is an LED light source, which has the advantages of low power consumption, long service life, high brightness and low heat, and the LED light source is a patch LED lamp.
Preferably, referring to fig. 3, the FPC3 is provided with a copper exposure area 7, and the connection between the copper exposure area 7 and the mobile phone motherboard is grounded, so as to minimize interference signals.
Preferably, the substrate of the FPC3 is polyimide, and the polyimide has light weight, thin thickness and good bending performance.
Optionally, the FPC3 is a single-layer FPC, which has low cost and is easy to process.
Optionally, the FPC3 is a double-layer FPC, which increases flexibility of the circuit, and has simple wiring and high reliability.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (8)
1. The utility model provides a simple and easy display screen, includes LCD, backlight unit and FPC, backlight unit is located LCD's below, its characterized in that: the FPC is integrated with the backlight module and the circuit of the liquid crystal display, and is positioned at one end of the backlight module and one end of the liquid crystal display; the FPC is provided with a U-shaped annular notch, and pins connected with display screen glass of the liquid crystal display are arranged on the inner side of the bottom of the U-shaped annular notch; the FPC on the inner side of the U-shaped annular notch is bent upwards to be welded with the display screen glass, and the FPC on the outer side of the U-shaped annular notch is bent downwards to be welded with the main board;
and the backlight source of the backlight module is integrated on the FPC and is positioned at the outer side of the top of the U-shaped annular notch on the back surface of the FPC.
2. The easy display of claim 1, wherein: and the output connection of the FPC is a connection mode compatible with serial port connection and parallel port connection.
3. The easy display of claim 1, wherein: the backlight source is an LED light source.
4. A simplified display screen as claimed in claim 3, wherein: the LED light source is a patch LED lamp.
5. The easy display of claim 1, wherein: and the FPC is provided with a copper exposure area.
6. The easy display of claim 1, wherein: the base material of the FPC is polyimide.
7. The easy display of claim 1, wherein: the FPC is a single-layer flexible circuit board.
8. The easy display of claim 1, wherein: and the FPC is a double-layer flexible circuit board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710477009.5A CN107172802B (en) | 2017-06-21 | 2017-06-21 | Simple display screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710477009.5A CN107172802B (en) | 2017-06-21 | 2017-06-21 | Simple display screen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107172802A CN107172802A (en) | 2017-09-15 |
| CN107172802B true CN107172802B (en) | 2023-10-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710477009.5A Active CN107172802B (en) | 2017-06-21 | 2017-06-21 | Simple display screen |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102664312B1 (en) * | 2018-12-24 | 2024-05-09 | 엘지디스플레이 주식회사 | Flexible display apparatus |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101689535A (en) * | 2007-05-30 | 2010-03-31 | 新藤电子工业株式会社 | Semiconductor device and its manufacturing method, and display and its manufacturing method |
| US20130088664A1 (en) * | 2010-06-21 | 2013-04-11 | Sharp Kabushiki Kaisha | Liquid crystal display device |
| CN204479874U (en) * | 2015-03-25 | 2015-07-15 | 深圳市天亿富电子有限公司 | A kind of novel liquid crystal display module |
| CN205229632U (en) * | 2015-12-19 | 2016-05-11 | 江西合力泰科技有限公司 | Cell -phone screen module |
| CN206224110U (en) * | 2016-11-29 | 2017-06-06 | 深圳市福瑞达显示技术有限公司 | A kind of TFT display screens of gauge without light source design |
| CN206932473U (en) * | 2017-06-21 | 2018-01-26 | 上海传英信息技术有限公司 | Simple display screen |
-
2017
- 2017-06-21 CN CN201710477009.5A patent/CN107172802B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101689535A (en) * | 2007-05-30 | 2010-03-31 | 新藤电子工业株式会社 | Semiconductor device and its manufacturing method, and display and its manufacturing method |
| US20130088664A1 (en) * | 2010-06-21 | 2013-04-11 | Sharp Kabushiki Kaisha | Liquid crystal display device |
| CN204479874U (en) * | 2015-03-25 | 2015-07-15 | 深圳市天亿富电子有限公司 | A kind of novel liquid crystal display module |
| CN205229632U (en) * | 2015-12-19 | 2016-05-11 | 江西合力泰科技有限公司 | Cell -phone screen module |
| CN206224110U (en) * | 2016-11-29 | 2017-06-06 | 深圳市福瑞达显示技术有限公司 | A kind of TFT display screens of gauge without light source design |
| CN206932473U (en) * | 2017-06-21 | 2018-01-26 | 上海传英信息技术有限公司 | Simple display screen |
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| Publication number | Publication date |
|---|---|
| CN107172802A (en) | 2017-09-15 |
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