CN109358458B - Display device - Google Patents
Display device Download PDFInfo
- Publication number
- CN109358458B CN109358458B CN201811231812.1A CN201811231812A CN109358458B CN 109358458 B CN109358458 B CN 109358458B CN 201811231812 A CN201811231812 A CN 201811231812A CN 109358458 B CN109358458 B CN 109358458B
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- Prior art keywords
- chip
- electrically connected
- board
- display device
- display panel
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1345—Conductors connecting electrodes to cell terminals
- G02F1/13454—Drivers integrated on the active matrix substrate
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
- G09G3/3611—Control of matrices with row and column drivers
- G09G3/3648—Control of matrices with row and column drivers using an active matrix
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
- G09G3/3611—Control of matrices with row and column drivers
- G09G3/3685—Details of drivers for data electrodes
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
- G09G3/3611—Control of matrices with row and column drivers
- G09G3/3696—Generation of voltages supplied to electrode drivers
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- Theoretical Computer Science (AREA)
- Computer Hardware Design (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Optics & Photonics (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Liquid Crystal Display Device Control (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The invention provides a display device. According to the display device, the time sequence controller and the source electrode driving chip are integrated to form the time sequence control and source electrode driving chip, or the time sequence controller and the system chip are integrated and the system chip board is electrically connected with the display panel through the flexible printed circuit board and the connector, so that the area of the circuit board in the display device is greatly reduced, the number of chips is reduced, the structure is simple, the product cost is lower, and the reliability is greatly improved.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display device.
Background
In the field of Display technology, flat panel Display devices such as Liquid Crystal Display (LCD) devices have gradually replaced Cathode Ray Tube (CRT) Display devices. The liquid crystal display device has many advantages of thin body, power saving, no radiation, etc., and is widely used.
Most of the existing liquid crystal display devices in the market are backlight liquid crystal display devices, which include a liquid crystal display panel and a backlight module (backlight module). Generally, a Liquid Crystal display panel includes a Color Filter (CF) substrate, a Thin Film Transistor (TFT) array substrate, a Liquid Crystal (LC) sandwiched between the Color Filter substrate and the TFT array substrate, and a Sealant frame (Sealant). The liquid crystal display panel has the working principle that liquid crystal molecules are placed in two parallel glass substrates, a plurality of vertical and horizontal fine wires are arranged between the two glass substrates, and the liquid crystal molecules are controlled to change directions by electrifying or not, so that light rays of the backlight module are refracted out to generate pictures.
Referring to fig. 1, a schematic structural diagram of a conventional display device includes a display panel 100, a Chip On Film (COF)200 electrically connected to the display panel 100, a timing controller Board (TCON Board)300 electrically connected to the COF 200, a Flexible Flat Cable (FFC)400 electrically connected to the timing controller Board 300, and a system on chip (SoC Board)500 electrically connected to the flexible flat cable 400, wherein a source driver chip 210 is disposed on the COF 200, a timing controller 310, a first memory chip 320 and a first direct current (DC/DC) voltage to direct current (DC/DC) voltage module 330 are disposed on the timing controller Board 300, and a system on chip 510, a flash memory 520, a second memory chip 530, a second DC/DC module 540 and an alternating current (AC/DC) voltage to Direct Current (DC) voltage module 550 are disposed on the system on chip 500. The external circuit board of the display device has a complex structure and high cost, and in order to save materials and reduce cost, the prior art can combine the time sequence controller board and the system chip board, but the weight of the combined circuit board is increased, so that the combined circuit board is difficult to bond with the display panel through the flip chip film, the flip chip film is easy to peel off (peeling) in the transportation process, and the mass production is difficult.
Disclosure of Invention
The invention aims to provide a display device which is simple in structure, high in reliability and low in cost.
To achieve the above object, the present invention provides, first, a display device including: the display device comprises a display panel, a chip on film electrically connected with the display panel, a transmission plate electrically connected with the chip on film, and a system chip plate electrically connected with the transmission plate;
the chip on film comprises a time sequence control and source electrode driving chip which is electrically connected with the display panel; the system chip board comprises a system chip with an overdrive function, and the system chip is electrically connected with the time sequence control of the chip on film and the source electrode driving chip through the transmission board.
The display device further comprises a flexible flat cable, and the system chip board is electrically connected with the transmission board through the flexible flat cable.
The transmission plate comprises a first storage chip electrically connected with the time sequence control and source electrode driving chip of the chip on film.
The system chip board also comprises a DC/DC module which is electrically connected with the system chip and is electrically connected with the time sequence control of the chip on film and the source electrode driving chip through the transmission board.
The system chip board further comprises a second memory chip electrically connected with the system chip, a flash memory electrically connected with the system chip, and an AC/DC module electrically connected with the DC/DC module.
The present invention also provides a display device including: the display device comprises a display panel, a flexible printed circuit board electrically connected with the display panel, a connector electrically connected with the flexible printed circuit board, a system chip board electrically connected with the connector and a source electrode driver electrically connected with the display panel;
the system chip board comprises a system chip with a time sequence control function;
the source electrode driving chip is bonded on the display panel and is electrically connected with the flexible printed circuit board; or the source driving chip is bonded on the flexible printed circuit board;
the system chip is electrically connected with the source electrode driving chip through the connector and the flexible printed circuit board.
The flexible printed circuit board is electrically connected with the display panel in a bonding mode.
The system chip board further comprises a DC/DC module electrically connected with the system chip.
The system chip board further comprises a flash memory electrically connected with the system chip.
The system-on-chip board further comprises an AC/DC module electrically connected with the DC/DC module.
The invention has the beneficial effects that: according to the display device, the time schedule controller and the source electrode driving chip are integrated to form the time schedule control and source electrode driving chip, or the time schedule controller and the system chip are integrated and the system chip board is electrically connected with the display panel through the flexible printed circuit board and the connector, so that the area of the circuit board in the display device is greatly reduced, the number of chips is reduced, the structure is simple, the product cost is lower, and the reliability is greatly improved.
Drawings
For a better understanding of the nature and technical aspects of the present invention, reference should be made to the following detailed description of the invention, taken in conjunction with the accompanying drawings, which are provided for purposes of illustration and description and are not intended to limit the invention.
In the drawings, there is shown in the drawings,
fig. 1 is a schematic structural diagram of a conventional display device;
FIG. 2 is a schematic structural diagram of a display device according to a first embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a display device according to a second embodiment of the present invention;
fig. 4 is a schematic structural diagram of a display device according to a third embodiment of the invention.
Detailed Description
To further illustrate the technical means and effects of the present invention, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.
Referring to fig. 2, a display device according to a first embodiment of the present invention includes: the display device comprises a display panel 10, a chip on film 20 electrically connected with the display panel 10, a transmission plate 30 electrically connected with the chip on film 20, and a system chip plate 40 electrically connected with the transmission plate 30.
The chip on film 20 includes a timing control and source driver chip 21 electrically connected to the display panel 10, and the timing control and source driver chip 21 has all functions of a source driver In the prior art and all functions of a timing controller except for Overdrive (OD), that is, the tid (tcon In driver) design integrating the source driver and the timing controller is adopted In the first embodiment of the present invention. The system chip board 40 includes a system chip 41 having an overdrive function electrically connected to the timing control and source driver chip 21 of the chip on film 20 via the transmission board 30.
Preferably, the flip chip 20 is electrically connected to the display panel 10 and the transmission plate 30 by bonding.
Specifically, the display device further includes a flexible flat cable 50, and the system chip board 40 is electrically connected to the transmission board 30 through the flexible flat cable 50.
Specifically, the transmission board 30 includes a first memory chip 31 electrically connected to the timing control and source driver chip 21 of the chip on film 20.
Preferably, the first memory chip 31 is a charged erasable programmable read only memory (EEPROM).
Specifically, the system-on-chip board 40 further includes a DC/DC module 42 electrically connected to the system-on-chip 41 and electrically connected to the timing control and source driver chip 21 of the flip chip 20 via the transmission board 30.
Preferably, the DC/DC module 42 is a power management chip (PMIC).
Specifically, the system-on-chip board 40 further includes a second memory chip 43 electrically connected to the system-on-chip 41, a flash memory 44 electrically connected to the system-on-chip 41, and an AC/DC module 45 electrically connected to the DC/DC module 42.
Preferably, the second memory chip 43 is a charged erasable programmable read only memory (EEPROM).
It should be noted that, in the first embodiment of the display device of the present invention, the portion of the prior art timing controller except the overdrive portion is integrated with the source driver to obtain the timing control and source driving chip 21 located on the flip chip 20, the overdrive function is added in the system chip 41, and the DC/DC module on the existing timing controller board is integrated with the DC/DC module on the system chip board, so that the DC/DC module 42 is only disposed on the system chip board 40 in the first embodiment of the present invention, and the original timing controller board is only disposed with the first memory chip 31 to become the transmission board 30 with the signal transmission function, so that the area of the circuit board in the display device is greatly reduced, the cost is reduced, and the bonding between the flip chip 20 and the transmission board 30 as well as between the display panel 10 is not affected, and the reliability of the product is improved.
Referring to fig. 3, a display device according to a second embodiment of the present invention includes: a display panel 10 ', a Flexible Printed Circuit (FPC)20 ' electrically connected to the display panel 10 ', a connector 30 ' electrically connected to the FPC 20 ', a system chip board 40 ' electrically connected to the connector 30 ', and a source driver 50 ' electrically connected to the display panel 10 '.
The system-on-chip board 40 'includes a system-on-chip 41' having a timing control function.
The source driving chip 50 ' is bonded on the display panel 10 ' and electrically connected to the flexible printed circuit board 20 '. The system chip 41 'is electrically connected to the source driver chip 50' through the connector 30 'and the flexible printed circuit board 20'.
Specifically, the flexible printed circuit board 20 'is electrically connected to the display panel 10' by bonding.
Specifically, the system-on-chip board 40 ' further includes a DC/DC module 42 ' electrically connected to the system-on-chip 41 '.
Preferably, the DC/DC module 42' is a PMIC.
Specifically, the system-on-chip board 40 ' further includes a flash memory 43 ' electrically connected to the system-on-chip 41 '.
Specifically, the system-on-chip board 40 ' further includes an AC/DC module 45 ' electrically connected to the DC/DC module 42 '.
It should be noted that, in the second embodiment of the present invention, the system chip 41 'having the timing control function is disposed on the system chip board 40', that is, the timing controller and the system chip in the prior art are integrated, and the source driver chip 50 'is directly bonded to the display panel 10', one end of the flexible printed circuit board 20 'is bonded to the display panel 10', and the other end of the flexible printed circuit board 20 'is bonded to the system chip board 40' through the connector 30 ', so that the timing controller board in the prior art is omitted, the area of the circuit board in the display device is reduced, and the cost of the product is reduced, although the system chip 41' of the system chip board 40 'is heavier due to the integration of the timing control function, but the system chip board 40' is electrically connected to the flexible printed circuit board 20 'through the connector 30' instead of the bonding method, the connecting effect is good, the assembly difficulty is reduced, and the reliability is higher.
Referring to fig. 4, a third embodiment of the present invention is different from the second embodiment in that the source driver chip 50 'is bonded to the flexible printed circuit board 20', and the rest is the same as the second embodiment, which is not described herein again.
It should be noted that, in the third embodiment of the present invention, based on the second embodiment, the source driver chip 50 'is directly bonded to the flexible printed circuit board 20' instead of being bonded to the display panel 10 ', so that the area of the circuit board in the display device is reduced to reduce the product cost, reduce the assembly difficulty and improve the product reliability, and at the same time, the heat dissipation performance of the source driver chip 50' is enhanced, thereby further improving the product reliability.
In summary, the display device of the present invention integrates the timing controller and the source driver chip to form the timing control and source driver chip, or integrates the timing controller and the system chip and electrically connects the system chip board and the display panel through the flexible printed circuit board and the connector, so that the area of the circuit board in the display device is greatly reduced, the number of chips is reduced, the structure is simple, the product cost is low, and the reliability is greatly improved.
As described above, it will be apparent to those skilled in the art that other various changes and modifications may be made based on the technical solution and concept of the present invention, and all such changes and modifications are intended to fall within the scope of the appended claims.
Claims (3)
1. A display device, comprising: the display device comprises a display panel (10), a flip chip film (20) electrically connected with the display panel (10), a transmission plate (30) electrically connected with the flip chip film (20), and a system chip board (40) electrically connected with the transmission plate (30);
the flip chip film (20) comprises a time sequence control and source electrode driving chip (21) which is electrically connected with the display panel (10); the system chip board (40) comprises a system chip (41) which is electrically connected with the timing control and source electrode driving chip (21) of the chip on film (20) through the transmission board (30) and has an overdrive function;
the transmission plate (30) comprises a first storage chip (31) which is electrically connected with the time sequence control and source electrode driving chip (21) of the chip on film (20);
the system chip board (40) further comprises a DC/DC module (42) electrically connected with the system chip (41) and electrically connected with the timing control and source driving chip (21) of the chip on film (20) through the transmission board (30).
2. The display device according to claim 1, further comprising a flexible flat cable (50), wherein the system chip board (40) is electrically connected to the transmission board (30) through the flexible flat cable (50).
3. The display device according to claim 1, wherein the system-on-chip board (40) further comprises a second memory chip (43) electrically connected to the system-on-chip (41), a flash memory (44) electrically connected to the system-on-chip (41), and an AC/DC module (45) electrically connected to the DC/DC module (42).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811231812.1A CN109358458B (en) | 2018-10-22 | 2018-10-22 | Display device |
| PCT/CN2018/115946 WO2020082467A1 (en) | 2018-10-22 | 2018-11-16 | Display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811231812.1A CN109358458B (en) | 2018-10-22 | 2018-10-22 | Display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109358458A CN109358458A (en) | 2019-02-19 |
| CN109358458B true CN109358458B (en) | 2020-10-30 |
Family
ID=65346109
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811231812.1A Active CN109358458B (en) | 2018-10-22 | 2018-10-22 | Display device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN109358458B (en) |
| WO (1) | WO2020082467A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110827777B (en) * | 2019-10-18 | 2020-11-24 | 深圳市华星光电技术有限公司 | Display panel driving device and configuration method thereof |
| CN110930896A (en) * | 2019-11-26 | 2020-03-27 | Tcl华星光电技术有限公司 | Display panel |
| CN114023769A (en) * | 2021-10-27 | 2022-02-08 | Tcl华星光电技术有限公司 | Chip on film and display module |
| CN114822401B (en) * | 2022-06-30 | 2022-09-27 | 惠科股份有限公司 | Display device, source electrode chip on film and driving method |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI270032B (en) * | 2004-06-14 | 2007-01-01 | Au Optronics Corp | Liquid crystal display device |
| CN100388350C (en) * | 2005-03-31 | 2008-05-14 | 奇景光电股份有限公司 | Grid control signal generation apparatus and method for liquid crystal display |
| US20060232579A1 (en) * | 2005-04-14 | 2006-10-19 | Himax Technologies, Inc. | WOA panel architecture |
| KR101289642B1 (en) * | 2009-05-11 | 2013-07-30 | 엘지디스플레이 주식회사 | Liquid crystal display |
| KR101609836B1 (en) * | 2009-12-10 | 2016-04-07 | 엘지디스플레이 주식회사 | Liquid crystal display device and method of manufacturing the same |
| CN202084281U (en) * | 2011-06-16 | 2011-12-21 | 北京京东方光电科技有限公司 | Driving device for liquid crystal display and liquid crystal display device |
| CN102855044B (en) * | 2012-09-12 | 2015-04-01 | 北京京东方光电科技有限公司 | Touch display device |
| CN103745703A (en) * | 2013-12-31 | 2014-04-23 | 深圳市华星光电技术有限公司 | Driving circuit of liquid crystal display panel, liquid crystal display panel and liquid crystal display device |
| CN204302618U (en) * | 2015-01-04 | 2015-04-29 | 京东方科技集团股份有限公司 | A kind of display device |
| CN105869591A (en) * | 2016-05-31 | 2016-08-17 | 深圳市华星光电技术有限公司 | Drive circuit and liquid crystal display device |
| CN105869595B (en) * | 2016-06-03 | 2018-07-27 | 深圳市华星光电技术有限公司 | A kind of display driving system and liquid crystal display |
-
2018
- 2018-10-22 CN CN201811231812.1A patent/CN109358458B/en active Active
- 2018-11-16 WO PCT/CN2018/115946 patent/WO2020082467A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| CN109358458A (en) | 2019-02-19 |
| WO2020082467A1 (en) | 2020-04-30 |
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