CN202075965U - Electronic ink display screen controller integrated in SOC chip - Google Patents
Electronic ink display screen controller integrated in SOC chip Download PDFInfo
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- CN202075965U CN202075965U CN201020671808XU CN201020671808U CN202075965U CN 202075965 U CN202075965 U CN 202075965U CN 201020671808X U CN201020671808X U CN 201020671808XU CN 201020671808 U CN201020671808 U CN 201020671808U CN 202075965 U CN202075965 U CN 202075965U
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Abstract
The utility model provides an electronic ink display screen controller integrated in an SOC chip. The electronic ink display screen controller integrated in an SOC chip comprises a CPU, a memory controller and a display driving controller. The CPU and the memory controller are the CPU and the memory controller carried by the SOC chip itself. The display driving controller is integrated in the SOC chip. The CPU and the memory controller are respectively connected with an electronic ink display screen and a power supply chip via the display driving controller, wherein the electronic ink display screen and the power supply chip are disposed outside the SOC chip. The CPU is also connected with a temperature sensor arranged outside the SOC chip via an I2C interface.
Description
[technical field]
The utility model relates to a kind of electric ink displaying screen controller technology, and particularly a kind of electric ink displaying screen controller that is integrated in the SOC chip is integrated into electric ink display screen presentation control function in the middle of the SOC chip system.
[background technology]
1. electric ink shows background of related
Reading is the important means that people obtain knowledge and succession civilization, and the instrument of reading also is constantly to develop progressively, to bamboo slip used for writing on during ancient times, arrives paper electronic reader till now from the earliest the inscriptions on bones or tortoise shells again.Present common electronics display, all can not well be fit to the custom that people read as CRT, LCD, LED, and the Electronic Paper that adopts electronic ink display technology has frivolous portable, super low-power consumption, radiationless, wide visual angle, characteristics such as reflective, is the ideal material of class papery reader.
As shown in Figure 1, present modal Electronic Paper adopts the electric ink of electrophoresis (Electrophoretic) displaying principle.Leading is the microcapsules electrophoretic display device (EPD) (Microencap sulated Electrophoretic Display) of U.S. Eink company exploitation.The electrophoresis liquid of the electropositivity particle (representing with open circles among the figure) of floating adularescent and the electronegativity particle of black (representing with having hatched circle among the figure) is encapsulated in the microcapsules of diameter tens micron dimensions, and be fixed in up and down between two parallel plate electrodes, wherein one of top electrodes is a transparency electrode.Apply electric field to a direction, electropositive white particles with electrophoresis to transparency electrode, electronegative black particles is poured into another utmost point (being bottom electrode), thereby makes the observer (see square frame part in upper left side Fig. 1) from the screen front to see the light of scattering, obtains bright field; Apply electric field round about, to the opposite electrode, black particle is poured into transparency electrode to white particles with electrophoresis, absorbs incident ray, obtains dark field thereby make the observer (see square frame part in upper right side Fig. 1) from the screen front.By alternately applying electric field, just can realize that the black and white attitude shows.In addition because the physical mechanism of electrophoresis, moving after near certain electrode when the charged corpuscle electrophoresis, can there be to be maintained voluntarily under the effect of electric field a period of time, therefore realized super low-power consumption substantially.
2. existing electric ink displaying screen controller and the general introduction of the scheme in application thereof
The display drive scheme of existing electric ink display screen, be with SOC chip (system level chip, also claim SOC (system on a chip)) the drive controlling chip of the external a slice electric ink of single-chip display screen, the SOC chip is controlled the demonstration of screen indirectly by the control chip of outside.
At present common electric ink display screen displaying scheme as shown in Figure 2, as can be seen from the figure, comprise SOC main control chip and external memory chip thereof, display driver chip (TCON), electric ink display screen (EPD, Electronic Paper Display) and temperature sensor (Temperature sensor), storage chip (SDRAM) and power supply chip (Power chip).Wherein, the SOC chip is provided by the providing of control, displaying contents of e-book system.Display driver chip and SDRAM are responsible for producing and storing digital drive time series data and the final screen terminal that drives that shows frame buffer draw data and screen.Temperature sensor carries out the temperature compensation of display device.Power supply chip is provided by providing of aanalogvoltage.
There is following shortcoming in above-mentioned this electric ink display screen displaying scheme: the one, need external third party's display driver control chip, and increase the cost of chip cost and PCB circuit board, and had extra power consumption expense.The 2nd, the low real-time and the inefficiencies of the control of the mating interface of SOC chip and display driver chip have increased the complexity of system controlling software.
[utility model content]
The technical problems to be solved in the utility model, be to provide the electric ink displaying screen controller in a kind of SOC of being integrated in chip, the electric ink displaying screen controller is integrated in the SOC chip single-chip, realizes the direct drive controlling of SOC chip main control chip screen.
The utility model is achieved in that the electric ink displaying screen controller in a kind of SOC of being integrated in chip, it comprises a CPU, a Memory Controller Hub at least, one display driver controller, described CPU and Memory Controller Hub are CPU and the Memory Controller Hub that the SOC chip itself carries; Described display driver controller is integrated in the SOC chip; Described CPU all is connected with SOC chip electric ink display screen and power supply chip outward respectively by this display driver controller with Memory Controller Hub, and described CPU also connects one by the I2C interface and is located at the outer temperature sensor of SOC chip.
Described Memory Controller Hub is to be connected with this display driver controller by bus, and described Memory Controller Hub also connects an external memory storage.
Described display driver controller further comprises a bus interface module, a video data processing module and a display timing generator control module that connects successively, described bus control module also is connected with described external memory storage, and described display timing generator control module also is connected with described electric ink display screen.
Described electric ink display screen also is connected with power supply chip.
The utlity model has following advantage: the electric ink displaying screen controller in a kind of SOC of being integrated in chip is provided, the electric ink displaying screen controller is integrated in the SOC chip single-chip, realize the direct drive controlling of SOC chip main control chip to screen.Can effectively reduce the cost (saving peripheral drive controlling chip and extra storage chip) of application on the one hand, can also improve the efficient that embedded software is used on the other hand, reduce the power consumption of complete machine.
[description of drawings]
In conjunction with the embodiments the utility model is further described with reference to the accompanying drawings.
Fig. 1 is an electric ink paper displaying principle synoptic diagram in the prior art.
Fig. 2 is the structural representation of electric ink display screen display drive scheme in the prior art.
Fig. 3 be the utility model integrated the SOC chip structure synoptic diagram of electric ink displaying screen controller.
Fig. 4 is the utility model electric ink displaying screen controller display data transmissions principle schematic.
Fig. 5 is the generation mode configuration synoptic diagram of the screen-refresh data of the utility model electric ink displaying screen controller.
Fig. 6 is the index structure synoptic diagram of the drive waveforms LUT of the utility model electric ink displaying screen controller.
[embodiment]
The utility model is that the electric ink displaying screen controller is integrated in the SOC chip, realizes the direct drive controlling of the main control chip of SOC chip to screen.See also Fig. 3 to Fig. 6, shown a preferred embodiment of the electric ink displaying screen controller in the SOC of the being integrated in chip of the present utility model.
As shown in Figure 3, electric ink displaying screen controller among this embodiment, it comprises a CPU, a Memory Controller Hub (Memory controller), and a display driver controller (TCON), described CPU and Memory Controller Hub are CPU and the Memory Controller Hub that the SOC chip itself carries; Described display driver controller is integrated in the SOC chip; Described CPU all is connected with SOC chip electric ink display screen (EPD) and power supply chip outward respectively by this display driver controller with Memory Controller Hub, and described CPU also connects one by the I2C interface and is located at the outer temperature sensor of SOC chip.Described electric ink display screen also is connected with power supply chip (Powerchip).Described Memory Controller Hub is to be connected with this display driver controller by bus (BUS), and described Memory Controller Hub also connects an external memory storage (External Memory).
This electric ink displaying screen controller is to be the electronic ink display of SOC chip design (Electronic Paper Device) driver module specially, it links to each other by the general system bus and the miscellaneous part of SOC chip internal, and the SOC chip can directly be controlled the display driver controller by CPU.This driver module and SOC chip are shared external memory storage, are used to deposit the view data of demonstration.The major function of this electric ink displaying screen controller be with the view data in the internal memory by certain processing, what convert screen to refreshes Wave data (waveform), the final demonstration that drives EPD by brush screen interface.It supports polytype EPD, supports multiple resolution setting, supports multiple drive modes.
What deserves to be mentioned is: the bus interface of this electric ink displaying screen controller comprises a main frame master and a slave slave.Wherein slave is used for system configuration brush screen parameter, brush screen pattern and some brush screen control.Master is used for the data of reading system internal memory.The public storage of the internal memory of video data and SOC chip system, this storage multiplexer mode has been saved the expense of controller internal storage, effectively reduces the logic scale of module.
Please emphasis with reference to figure 4, described display driver controller further comprises a bus interface module, a video data processing module and a display timing generator control module that connects successively, described bus interface module also is connected with described external memory storage, described display timing generator control module also with described electric ink display screen.The view data that will show (image data) earlier, be placed in the external memory storage (External Memory), through the Memory Controller Hub of SOC chip again through bus transfer to display driver controller (TCON), by the sequential control of bus interface module, video data processing module and display timing generator control module, drive electric ink display screen (EPD) at last and show.
Emphasis is with reference to figure 5, and this electric ink displaying screen controller supports two kinds of screen-refresh data to produce pattern: directly refresh (direct) pattern (representing with the following arrow between buffer memory and the MUX among the figure) and look-up table (LUT) pattern (representing with the top arrow between buffer memory and the MUX among the figure).Under the Direct pattern, the data of Installed System Memory (FIFO) be EPD refresh Wave data (these data are produced by software algorithm), therefore only data directly need be sent to EPD equipment and get final product by refreshing sequential (MUX).Under the LUT pattern, what Installed System Memory was deposited is the pixel data of image, and these data need be passed through the hardware implementation algorithm, converts the Wave data that refreshes of EPD to.
In addition, but, can change configuration accordingly, improve the compatibility of display controller at different display devices and different displays temperatures because the algorithm of electric ink display screen is integrated into the hardware module of LUT configuration.
Electric ink has the electrophoresis memory effect, and the level drive waveforms of electric ink pixel not only has relation with the target gray scale value, also with original GTG value relation is arranged.This drive waveforms also has relation with the technological parameter of temperature, GTG sum, electric ink screen etc. simultaneously.Therefore the level drive waveforms of electric ink and the pixel gray level value of front and back have full mapping relations.Its full mapping relations can be with reference to figure 6, and the driving of electric ink needs the driving of multiframe could show finally that it is the structure of look-up table that gray scale image to display, Fig. 6 have indicated the index structure of brushing the screen waveform.Its lateral coordinates is made up of the pixel value (Next pixel) of impact point.Along slope coordinate is made up of two parts, and a part is the pixel value (Current counter) of current point, and a part is the frame count value (frame counter) of brush screen in addition.Among the design, the pixel data of two frames before and after each pixel are formed a pixel_index index, as an input parameter of waveform algorithm.According to this index add the current frame count value that refreshes (frame counter) again by look-up table (LUT) brushed accordingly the screen drive waveforms (waveform).
In sum, the utility model provides the electric ink displaying screen controller in a kind of SOC of being integrated in chip, and the electric ink displaying screen controller is integrated in the SOC chip single-chip, realizes the direct drive controlling of the CPU of SOC chip to screen.Can effectively reduce the cost (saving peripheral drive controlling chip and extra storage chip) of application on the one hand, can also improve the efficient that embedded software is used on the other hand, reduce the power consumption of complete machine.
Though more than described embodiment of the present utility model; but being familiar with those skilled in the art is to be understood that; our described specific embodiment is illustrative; rather than be used for qualification to scope of the present utility model; those of ordinary skill in the art are in the modification and the variation of the equivalence of doing according to spirit of the present utility model, all should be encompassed in the scope that claim of the present utility model protects.
Claims (6)
1. electric ink displaying screen controller that is integrated in the SOC chip, it is characterized in that: comprise a CPU, a Memory Controller Hub and a display driver controller at least, described CPU and Memory Controller Hub are CPU and the Memory Controller Hub that the SOC chip itself carries; Described display driver controller is integrated in the SOC chip; Described CPU all is connected with a SOC chip electric ink display screen and a power supply chip outward respectively by this display driver controller with Memory Controller Hub, and described CPU also connects one by the I2C interface and is located at the outer temperature sensor of SOC chip.
2. a kind of electric ink displaying screen controller that is integrated in the SOC chip according to claim 1 is characterized in that: described Memory Controller Hub is to be connected with this display driver controller by bus.
3. a kind of electric ink displaying screen controller that is integrated in the SOC chip according to claim 2 is characterized in that: the bus interface of described bus comprises the main frame and the slave that is used for system configuration brush screen parameter, brush screen pattern and some brush screen controls that are used for the data of reading system internal memory.
4. a kind of electric ink displaying screen controller that is integrated in the SOC chip according to claim 2, it is characterized in that: described Memory Controller Hub also connects an external memory storage.
5. a kind of electric ink displaying screen controller that is integrated in the SOC chip according to claim 4, it is characterized in that: described display driver controller further comprises a bus interface module, a video data processing module and a display timing generator control module that connects successively, described bus control module also is connected with described external memory storage, and described display timing generator control module also is connected with described electric ink display screen.
6. a kind of electric ink displaying screen controller that is integrated in the SOC chip according to claim 1, it is characterized in that: described electric ink display screen also is connected with described power supply chip.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020671808XU CN202075965U (en) | 2010-12-21 | 2010-12-21 | Electronic ink display screen controller integrated in SOC chip |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020671808XU CN202075965U (en) | 2010-12-21 | 2010-12-21 | Electronic ink display screen controller integrated in SOC chip |
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| CN202075965U true CN202075965U (en) | 2011-12-14 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105677272A (en) * | 2015-12-28 | 2016-06-15 | 智慧方舟科技有限公司 | E-Ink screen terminal, and doodle implementation method and apparatus thereof |
| WO2017088234A1 (en) * | 2015-11-24 | 2017-06-01 | 深圳市华星光电技术有限公司 | Display screen control system and display device |
| WO2018196128A1 (en) * | 2017-04-24 | 2018-11-01 | 惠科股份有限公司 | Display device and control circuit and method therefor |
| CN109819075A (en) * | 2019-01-17 | 2019-05-28 | 深圳市晶久瑞电子科技有限公司 | Temperature control electronic ink screen mobile phone |
| CN110703939A (en) * | 2019-09-25 | 2020-01-17 | 掌阅科技股份有限公司 | Handwriting reading equipment and report point data processing method thereof, and computer storage medium |
| WO2020143794A1 (en) * | 2019-01-11 | 2020-07-16 | 京东方科技集团股份有限公司 | Display control system and display apparatus |
| US11862116B2 (en) | 2019-09-25 | 2024-01-02 | Zhangyue Technology Co., Ltd | Handwriting reading device, method for processing report point data, and computer storage medium |
-
2010
- 2010-12-21 CN CN201020671808XU patent/CN202075965U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017088234A1 (en) * | 2015-11-24 | 2017-06-01 | 深圳市华星光电技术有限公司 | Display screen control system and display device |
| CN105677272A (en) * | 2015-12-28 | 2016-06-15 | 智慧方舟科技有限公司 | E-Ink screen terminal, and doodle implementation method and apparatus thereof |
| WO2018196128A1 (en) * | 2017-04-24 | 2018-11-01 | 惠科股份有限公司 | Display device and control circuit and method therefor |
| WO2020143794A1 (en) * | 2019-01-11 | 2020-07-16 | 京东方科技集团股份有限公司 | Display control system and display apparatus |
| US11024254B2 (en) | 2019-01-11 | 2021-06-01 | Boe Technology Group Co., Ltd. | Display control system and display apparatus |
| CN109819075A (en) * | 2019-01-17 | 2019-05-28 | 深圳市晶久瑞电子科技有限公司 | Temperature control electronic ink screen mobile phone |
| CN110703939A (en) * | 2019-09-25 | 2020-01-17 | 掌阅科技股份有限公司 | Handwriting reading equipment and report point data processing method thereof, and computer storage medium |
| US11862116B2 (en) | 2019-09-25 | 2024-01-02 | Zhangyue Technology Co., Ltd | Handwriting reading device, method for processing report point data, and computer storage medium |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 350000 Fuzhou Gulou District, Fujian, software Avenue, building 89, No. 18 Patentee after: FUZHOU ROCKCHIP ELECTRONICS CO., LTD. Address before: 350000 Fuzhou Gulou District, Fujian, software Avenue, building 89, No. 18 Patentee before: Fuzhou Rockchip Semiconductor Co., Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 350000 building, No. 89, software Avenue, Gulou District, Fujian, Fuzhou 18, China Patentee after: Ruixin Microelectronics Co., Ltd Address before: 350000 building, No. 89, software Avenue, Gulou District, Fujian, Fuzhou 18, China Patentee before: Fuzhou Rockchips Electronics Co.,Ltd. |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111214 |