CN102270415A - Built-in system type TFT-LCD (thin film transistor-liquid crystal display) liquid crystal display module - Google Patents
Built-in system type TFT-LCD (thin film transistor-liquid crystal display) liquid crystal display module Download PDFInfo
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- CN102270415A CN102270415A CN2010101976605A CN201010197660A CN102270415A CN 102270415 A CN102270415 A CN 102270415A CN 2010101976605 A CN2010101976605 A CN 2010101976605A CN 201010197660 A CN201010197660 A CN 201010197660A CN 102270415 A CN102270415 A CN 102270415A
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Abstract
The invention discloses a built-in system type TFT-LCD liquid crystal display module, comprising a TFT-LCD display screen, wherein a pixel scanning processor is disposed on the TFT-LCD display screen, as well as a graphic display processor and a MCU (micro controller unit) are further disposed on the TFT-LCD display screen; the graphic display processor is connected with the MCU, and the MCU is connected with the pixel scanning processor; the MCU controls the graphic display processor to perform graphic processing on an external input signal, sends the signal after the graphic processing to the pixel scanning processor to perform pixel scanning, and then displays the signal after the pixel scanning on the TFT-LCD display screen. In the invention, the MCU and the graphic display processor are disposed on the TFT-LCD display screen and directly connected with an external device via a FPC (flexible printed circuit) board; the original main control board is cancelled, which reduces the volume of the whole TFT-LCD liquid crystal display system, greatly facilitates the assembly of a user, decreases the assembly and production costs of the user, and increases the assembly efficiency of the overall liquid crystal product.
Description
Technical field
The present invention relates to a kind of liquid crystal display module, particularly a kind of built-in system type TFT-LCD liquid crystal display module.
Background technology
Along with digital development of science and technology, also constantly development and demand grow with each passing day display technology.It is early stage that (Cathode Ray Tube CRT) has excellent display quality and technology maturation, therefore monopolizes the monitor market all the year round owing to cathode-ray tube (CRT).Yet, in recent years along with the rise of environmental protection notion, the big and bigger characteristic of generation radiant quantity of energy resource consumption based on cathode-ray tube (CRT), cathode-ray tube (CRT) adds that its product flattening space is limited, so can't satisfy the market trend of market for light, thin, short, little, attractive in appearance and low consumpting power.Therefore, (Flat Panel Display FPD) has replaced the thick and heavy cathode-ray tube display of tradition to frivolous flat-panel screens gradually.Common flat-panel screens includes plasma display panel (PlasmaDisplay Panel, PDP), LCD (Liquid Crystal Display, LCD) and Thin Film Transistor-LCD (Thin Film Transistor Liquid Crystal Display, TFT-LCD) etc.
LCD product has been widely used in each aspect in the daily life at present, also progressively improves for the fine degree of liquid crystal display, thin type, light weight requirement and the picture color display characteristic of display panel.Display panels is the pith of liquid crystal display product, is applied on the liquid crystal panel by electric signal and does not only pass through with control.Because liquid crystal itself can be not luminous, therefore needing light source constantly provides light to inject display screen, could realize that picture shows.In liquid crystal display product, select module backlight that light is provided usually, the liquid crystal of liquid crystal panel is adjusted light from module backlight with display image under electric field action.
In recent years, utilize the liquid crystal display module of module backlight constantly to be suggested, wherein a kind of existing TFT-LCD liquid crystal display module as shown in Figure 1, this module comprises a TFT-LCD display panels 101, one master control board 105 and a picture element scan processor 102, picture element scan processor 102 is fixedly installed on the TFT-LCD display panels 101 by silica gel 103, and TFT-LCD display panels 101, picture element scan processor 102 is connected with master control board 105 by FPC plate 104 again, master control board 105 is provided with external interface 106, this external interface 106 is connected with external unit, wherein the master control board 105 here is individualisms with TFT-LCD display panels 101, and master control board 105 volumes are bigger.Picture element scan processor 102 is arranged on the TFT-LCD display panels 101, and employing glass flip chip structure (Chip On Glass, COG).Wherein TFT-LCD display panels 101, picture element scan processor 102 all are connected with graphic presentation processor in the master control board 105 by the liquid crystal interface bus, the graphic presentation processor then is connected with external unit, SDRAM and FLASH, input signal according to the outside carries out control and treatment, shows the figure (see figure 2) of required demonstration on TFT-LCD display panels 101.
But this TFT-LCD liquid crystal display module, just as a display unit, can't participate in the control of complete machine, it need be connected by the complete machine operation circuit of FPC plate with the outside, to realize the demonstration control of figure, so just having caused demonstration module and complete machine operation circuit is two complete independent parts, and the master control board volume that exists owing to the complete machine operation circuit in manufacture process is bigger, and the link position relation is also comparatively complicated between the TFT-LCD display panels, thereby caused total system complicated more, shortcomings such as cost up, especially along with the appearance of the more and more higher development trend of the integrated degree of liquid crystal display product, how to realize that by single TFT-LCD liquid crystal display module graphic presentation is present institute problem demanding prompt solution.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of built-in system type TFT-LCD liquid crystal display module, this module will be controlled and the graphic presentation process chip is arranged on the display panels, reduced system cost, reduced machine volume.
For achieving the above object, the present invention is mainly by the following technical solutions:
A kind of built-in system type TFT-LCD liquid crystal display module, comprise the TFT-LCD display screen, described TFT-LCD display screen is provided with a picture element scan processor, also be provided with a graphic presentation processor and a MCU on the described TFT-LCD display screen, described graphic presentation processor is connected with MCU, described MCU is connected with the picture element scan processor, described MCU control figure video-stream processor carries out graphics process to external input signal, and the signal after the graphics process is delivered to the picture element scan processor carries out picture element scan, again the signal behind the picture element scan is presented on the TFT-LCD display screen.
Also be provided with a real-time clock processor on the described TFT-LCD display screen, this real-time clock processor is connected with MCU, and by MCU in the real-time read clock information of TFT-LCD display screen.
Also be provided with an IO interface on the described TFT-LCD display screen, described MCU is connected with the FPC plate by this IO interface.
Described IO interface comprises audio frequency IO interface, universal input/output interface, A/D IO interface.
Described MCU also is connected with an external nonvolatile memory, stores system program that calls for MCU and the graph data that calls for the graphic presentation processor in this external nonvolatile memory.
Described graphic presentation processor, MCU and picture element scan processor are fixed on the TFT-LCD display screen by the COG processing technology.
Compared with prior art, the present invention has following beneficial effect:
1, the present invention is arranged on MCU and graphic presentation processor on the TFT-LCD display screen, directly be connected with external unit by the FPC plate, cancel original master control board, reduced the volume of whole TFT-LCD liquid crystal display systems, had more frivolous, simpler advantage.
2, TFT-LCD liquid crystal display module of the present invention need not external graphic display control, can be directly by showing that the universal input/output interface on the module is connected with external unit, user's assembling and use have greatly been made things convenient for, reduce user's assembling production cost, improved the packaging efficiency of complete machine LCD product.
Description of drawings
Fig. 1 is the structural representation of existing TFT-LCD liquid crystal display module.
Fig. 2 is the system principle diagram of existing TFT-LCD liquid crystal display module.
Fig. 3 is the structural representation of TFT-LCD liquid crystal display module of the present invention.
Fig. 4 is the system principle diagram of TFT-LCD liquid crystal display module of the present invention.
Identifier declaration among the figure: TFT-LCD display screen 201, picture element scan processor 202, silica gel 203, graphic presentation processor 204, FPC plate 205, MCU 206, real-time clock processor 207.
Embodiment
Core concept of the present invention is: the present invention is arranged on graphic presentation processor and MCU on the TFT-LCD display screen by the COG processing technology, and utilize silica gel that itself and picture element scan processor are sealed, be connected with the FPC plate by IO interface then, be connected with external unit by the FPC plate, when the external unit signal instruction is imported MCU by this IO interface, MCU can control the figure video-stream processor signal of this input is carried out graphics process, and the information after will handling sends to the picture element scan processor through MCU again, the picture element scan processor then carries out a driving and a source driven sweep to this information, makes it to show on the TFT-LCD display screen.
For setting forth thought of the present invention and purpose, the present invention is described in further detail below in conjunction with the drawings and specific embodiments.
See also Fig. 3, shown in Figure 4, the present invention is to provide a kind of built-in system type TFT-LCD liquid crystal display module, this module is mainly used in to solve and shows in the present TFT-LCD liquid crystal display product that module and complete machine operation circuit are because of the independent volume that exists is big mutually, cost is high, the defective of system complex.
As shown in Figure 3, Fig. 3 is the structural representation of TFT-LCD liquid crystal display module of the present invention.Built-in system type TFT-LCD liquid crystal display module of the present invention mainly includes TFT-LCD display screen 201 and a FPC (flexible PCB) plate 205, described TFT-LCD display screen 201 is mainly by glass plate, last polaroid, colored filter, liquid crystal, circuit pack, formations such as film substrate and following polaroid, and on this TFT-LCD display screen 201, also be provided with picture element scan processor 202, graphic presentation processor 204, MCU 206 and real-time clock processor 207, described picture element scan processor 202, graphic presentation processor 204, MCU 206 and real-time clock processor 207 all are fixed on the glass plate by the COG processing mode, and by silica gel 203 sealing and fixing, corresponding above-mentioned picture element scan processor 202, graphic presentation processor 204, MCU 206 passes through FPC plate 205 with real-time clock processor 207 and is connected with external unit.
As shown in Figure 4, Fig. 4 is the system principle diagram of TFT-LCD liquid crystal display module of the present invention.TFT-LCD liquid crystal display module wherein described here comprises two parts, and a part is the TFT-LCD LCDs; A part is positioned at the lower end of this TFT-LCD LCDs, and this part is by silica stationary, and it includes picture element scan processor, MCU, graphic presentation processor, real-time clock processor, power management chip and IO interface.Described picture element scan processor is connected with circuit pack in the TFT-LCD LCDs, and MCU is connected with the graphic presentation processor, and the real-time clock processor is connected with MCU.
MCU is connected with the graphic presentation processor, being used to control the figure video-stream processor handles the information of input, the image data that the graphic presentation processor then is responsible for MCU is sent here is processed into the recognizable form of display, deliver to the picture element scan processor again, this image is carried out driving (LCDGate Driver) scanning with the picture element scan processor and the source drives (LCD Source Driver) scanning, forms display graphics and shows on display screen.
The real-time clock processor is connected with MCU, is mainly used in real-time clock signal is sent to the picture element scan processor by MCU, and shows on the TFT-LCD LCDs with the clock form.
MCU also is connected with an external nonvolatile memory, this external nonvolatile memory is preferably the FLASH chip, it is mainly used in stores system program that calls for MCU and the graph data that calls for the graphic presentation processor, when MCU works, and calling system program from this nonvolatile memory.
In addition, also include SD card interface module, JPEG decoder module and MP3 decoding module in this module, wherein the SD card interface module is used for external SD card; The JPEG decoder module is used for playing the JPEG picture that FLASH or SD card are stored; The MP3 decoding module is used for playing MP3 music and picture that FLASH or SD card are stored.
Principle of work of the present invention is: at first enter MCU by external command by IO interface, MCU sends to this instruction in the graphic presentation processor and handles, information after will handling then sends to the picture element scan processor by MCU and carries out picture element scan, and finally shows on display screen.
With the A/D IO interface is example, the A/D IO interface connects external temperature sensor or humidity sensor, corresponding temperature sensor or humidity sensor produce temperature or humidity pulse signal, this signal carries out analog-converted by the FPC plate by the A/D IO interface and becomes digital signal, MCU sends to the graphic presentation processor with this digital signal, by the graphic presentation processor it is handled, to form the numerical information that can on display screen, show, and carry out picture element scan by the picture element scan processor, finally on display screen, show.
Present existing TFT-LCD liquid crystal display module is owing to increased master control circuit board, and this master control circuit board adopts the chipset of encapsulation separately to be contained on the PCB, exist volume big, problems such as assembling complexity, in entire product, occupy than large space, will cause the volume of whole TFT-LCD liquid crystal display module big like this; And the built-in system type TFT-LCD liquid crystal display module among the present invention, because numerous important chip such as the MCU on the master control circuit board, graphic presentation processor all are arranged on the TFT-LCD LCDs by the COG technology mode, therefore not at needs main control circuit plate portion, comparatively speaking, the thickness of built-in system type TFT-LCD liquid crystal display module of the present invention is thinner than existing, and volume is little.Meet the requirement of present miniaturization of electronic products, multifunction.
In addition,, therefore avoided the procedure for producing of this link in process of production, also avoided production demand simultaneously, reduced the production cost of enterprise, avoided environmental pollution master control board because the present invention has cancelled the application of master control board.
Built-in system type TFT-LCD liquid crystal display module of the present invention can be widely used in fields such as mobile phone, MP4, digital camera, notebook computer, household electrical appliance, vehicle-carrying DVD, can effectively reduce production cost of products, improves production efficiency of products.
More than be that a kind of built-in system type TFT-LCD liquid crystal display module provided by the present invention is described in detail, used specific case herein structural principle of the present invention and embodiment are set forth, above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (6)
1. built-in system type TFT-LCD liquid crystal display module, comprise the TFT-LCD display screen, described TFT-LCD display screen is provided with a picture element scan processor, it is characterized in that also being provided with on the described TFT-LCD display screen graphic presentation processor and a MCU, described graphic presentation processor is connected with MCU, described MCU is connected with the picture element scan processor, described MCU control figure video-stream processor carries out graphics process to external input signal, and the signal after the graphics process is sent to the picture element scan processor carry out picture element scan, again the signal behind the picture element scan is presented on the TFT-LCD display screen.
2. built-in system type TFT-LCD liquid crystal display module according to claim 1, it is characterized in that also being provided with on the described TFT-LCD display screen real-time clock processor, this real-time clock processor is connected with MCU, and by MCU in the real-time read clock information of TFT-LCD display screen.
3. built-in system type TFT-LCD liquid crystal display module according to claim 1 is characterized in that also being provided with an IO interface on the described TFT-LCD display screen, and described MCU is connected with the FPC plate by this IO interface.
4. built-in system type TFT-LCD liquid crystal display module according to claim 3 is characterized in that described IO interface comprises audio frequency IO interface, universal input/output interface, A/D IO interface.
5. built-in system type TFT-LCD liquid crystal display module according to claim 1, it is characterized in that described MCU also is connected with an external nonvolatile memory, store system program that calls for MCU and the graph data that calls for the graphic presentation processor in this external nonvolatile memory.
6. built-in system type TFT-LCD liquid crystal display module according to claim 1 is characterized in that described graphic presentation processor, MCU and picture element scan processor are fixed on the TFT-LCD display screen by the COG processing technology.
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| CN2010101976605A CN102270415A (en) | 2010-06-04 | 2010-06-04 | Built-in system type TFT-LCD (thin film transistor-liquid crystal display) liquid crystal display module |
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| CN2010101976605A CN102270415A (en) | 2010-06-04 | 2010-06-04 | Built-in system type TFT-LCD (thin film transistor-liquid crystal display) liquid crystal display module |
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Cited By (7)
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| CN102831868A (en) * | 2012-08-22 | 2012-12-19 | 北京京东方光电科技有限公司 | Liquid crystal display screen assembly, liquid crystal display screen and liquid crystal display device |
| CN102842586A (en) * | 2012-08-15 | 2012-12-26 | 京东方科技集团股份有限公司 | Display substrate, display panel and display device |
| CN103915065A (en) * | 2012-12-31 | 2014-07-09 | 施耐德电器工业公司 | Liquid crystal display module |
| CN104504998A (en) * | 2015-01-22 | 2015-04-08 | 京东方科技集团股份有限公司 | Display panel and display device |
| CN104700804A (en) * | 2015-03-25 | 2015-06-10 | 广东威创视讯科技股份有限公司 | COG (Chip On Glass) liquid crystal display device, display control device and display system |
| CN107403595A (en) * | 2017-06-19 | 2017-11-28 | 合肥市惠科精密模具有限公司 | A kind of built-in system type TFT LCD curved-surface display modules |
| WO2021109105A1 (en) * | 2019-12-06 | 2021-06-10 | Qualcomm Incorporated | Synchronization between graphical processing units and display processing units |
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| CN104700804A (en) * | 2015-03-25 | 2015-06-10 | 广东威创视讯科技股份有限公司 | COG (Chip On Glass) liquid crystal display device, display control device and display system |
| CN104700804B (en) * | 2015-03-25 | 2018-07-10 | 广东威创视讯科技股份有限公司 | A kind of COG liquid crystal display devices, display control unit and display system |
| CN107403595A (en) * | 2017-06-19 | 2017-11-28 | 合肥市惠科精密模具有限公司 | A kind of built-in system type TFT LCD curved-surface display modules |
| WO2021109105A1 (en) * | 2019-12-06 | 2021-06-10 | Qualcomm Incorporated | Synchronization between graphical processing units and display processing units |
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Application publication date: 20111207 |