CN213458873U

CN213458873U - Serial port screen and intelligent watch

Info

Publication number: CN213458873U
Application number: CN202022699668.3U
Authority: CN
Inventors: 崔瀚之; 张�林
Original assignee: Shenzhen Gaotong Semiconductor Co ltd
Current assignee: Shenzhen Gaotong Semiconductor Co ltd
Priority date: 2020-11-19
Filing date: 2020-11-19
Publication date: 2021-06-15
Anticipated expiration: 2030-11-19

Abstract

The utility model discloses a serial port screen, include: the display screen and the PCB are connected with the display screen; the display screen is bonded with a driving chip and a high-pass vector font chip connected with the driving chip in an FPC and COB mode; and a screen zooming key connected with the driving chip is also arranged on the display screen. The utility model discloses an optimize its internal chip structure, set up high pass GT5SLCD2S4A vector word library chip, set up the screen simultaneously and zoomed the button, make the user can freely zoom the screen part that will look over, make the use of serial ports screen look and feel better, and more have the practicality.

Description

Serial port screen and intelligent watch

Technical Field

The utility model relates to a display device technical field especially relates to a serial ports screen and intelligent wrist-watch.

Background

At present, in serial port screens and various display modules released by various manufacturers, the MCU microcontroller and the LCD driver chip and the memory chip are mostly adopted in discrete structures, the defect is that too many chips are integrated on a serial port screen driver board, the number of packaging structures is too many, the circuit is also more complicated, and the design and the production of the serial port screens are not facilitated. The traditional word library of the serial port screen and various display modules is generally realized by the following modes: the first is to use lattice character library to realize the display of character, and the edge of lattice character library has no gray pixel and has the defects of unsmooth character edge, distortion after character magnification, etc. Because the sizes of the fonts to be displayed on a plurality of display interfaces in a system are different, a plurality of dot matrix word libraries are often required to be stored in one storage chip, so that the capacity of the storage chip is multiplied, and the cost is increased dramatically. The second is to cut the font picture from the large desktop system such as WINDOWS to the body by the cutting pattern mode, and store the picture in the memory chip according to the font coding sequence, although this mode has solved the gray scale problem, the capacity is exponentially increased, a set of word stock made of 32 dot cutting patterns of GB18030 needs 32 × 2 × 27538=430Mbit of space, need to use NAND FLASH with higher cost to store. The disadvantages of the above implementation methods are that hardware resources are excessively consumed, and in actual use, the edge of a font on a serial port display screen is not smooth enough, and the font distortion can be caused after the displayed font is amplified, so that the use look and feel of the font are not good.

Therefore, how to design a serial port screen capable of amplifying vector fonts is an urgent technical problem to be solved in the industry.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem that serial ports screen typeface is fuzzy unable enlargedly among the above-mentioned prior art, the utility model provides a serial ports screen optimizes its internal chip structure, has set up vector word storehouse chip, has set up the screen button of zooming simultaneously, makes the user can freely zoom the screen part that will look over, makes the use impression of serial ports screen better, and more has the practicality.

The utility model provides a technical scheme is, designs a serial ports screen, include: the display screen and the PCB are connected with the display screen; the display screen is bonded with a driving chip and a high-pass vector font chip connected with the driving chip in an FPC and COB mode; and the display screen is also provided with a screen zooming key connected with the driving chip.

The high-pass vector word stock chip is a high-pass GT5SLCD2S4A vector word stock chip.

And the driving chip is packaged with an MCU (microprogrammed control unit), an SRAM (static random access memory) and a display screen logic control chip in an SOC (system on chip) mode.

The PCB board is double-deck PCB, and the display screen is connected with double-deck PCB through FPC's mode.

And the PCB is provided with a lithium battery and a voltage conversion circuit connected with the lithium battery and the driving chip.

The display screen is adjacently provided with a backlight module, the PCB is also provided with a backlight circuit connected with the driving chip, and the backlight circuit is connected with the backlight module.

The display screen is an LCD display screen.

The voltage conversion circuit and the backlight circuit are both provided with shielding cases for shielding electromagnetic interference.

The utility model also provides an intelligent watch, including above-mentioned arbitrary serial ports screen.

Compared with the prior art, the utility model discloses set up high pass GT5SLCD2S4A vector word stock chip in the serial ports screen, can improve the fineness that shows the character in the serial ports screen, font edge smoothness is complete and can not distort after enlargeing, can set up in the serial ports screen and use multiple vector character, the intelligent wrist-watch that makes serial ports screen and adopt this serial ports screen more has the practicality, optimize the serial ports screen structure simultaneously, make it can use the screen button of zooming simultaneously, the user can freely look over serial ports screen local, it is better to use the impression.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.

Fig. 1 is a schematic diagram of an internal structure of a serial port screen in an embodiment of the present invention;

fig. 2 is a schematic diagram of an internal structure of a vector font library chip according to an embodiment of the present invention;

description of reference numerals: 1. a display screen; 2. a PCB board; 3. a driving chip; 4. a vector font library chip; 5. a screen zoom button; 6. a lithium battery; 7. a voltage conversion circuit.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In the description of the present invention, it is to be understood that the terms "center", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Thus, a feature indicated in this specification will serve to explain one of the features of an embodiment of the invention, and not to imply that every embodiment of the invention must have the described feature. Further, it should be noted that this specification describes many features. Although some features may be combined to show a possible system design, these features may also be used in other combinations not explicitly described. Thus, the combinations illustrated are not intended to be limiting unless otherwise specified.

The principles and structure of the present invention will be described in detail below with reference to the accompanying drawings and examples.

The specific embodiment of the utility model provides a serial port screen, including display screen and integrated driver chip and the vector word storehouse chip on the display screen, optimize the structure of serial port screen, be provided with the screen button of zooming on the serial port screen, make it can show the higher vector typeface of fineness on the display screen, the edge smoothness of vector typeface just enlargies the back undistorted, make the intelligent terminal of serial port screen and adoption this serial port screen use the impression better, more have the practicality.

As shown in fig. 1, the serial port screen includes a display screen 1, a PCB board 2 connected to the display screen 1, and a backlight module disposed adjacent to the display screen 1.

The display screen 1 is bonded with a driving chip 3 and a vector font chip 4 connected with the driving chip 3 in an FPC and COB mode.

The display screen 1 is provided with a screen zoom key 5 connected to the LT268 driver chip for controlling the screen zoom function of the display screen 1. The screen zooming key 5 comprises an upper azimuth key, a lower azimuth key, a left azimuth key, a right azimuth key and the like, the control key is used for starting the zooming function of the display screen, and the azimuth key is used as a page

The PCB board 2 is a double-layer PCB.

The double-layer PCB is connected to the display screen 1 through the FPC and is provided with a voltage conversion circuit 7 and a backlight circuit, and the voltage conversion circuit 7 and the backlight circuit are both provided with shielding cases for shielding electromagnetic interference to the display screen 1. The backlight circuit is connected with the backlight module and the driving chip 3, receives a light source signal from the driving chip 3, and transmits the light source signal to the backlight module, and the driving chip 3 controls the opening and closing of the backlight module. The voltage conversion circuit 7 is connected to the driving chip 3 and used for converting the serial port screen voltage.

The vector word stock chip bound on the display screen 1 is a high-pass 4GT5SLCD2S4A vector word stock chip, is provided with a word stock serial interface, is an SPI communication interface, and is used for transmitting a word stock chip selection control signal, a word stock clock input signal, a word stock address input signal, a word stock data output signal, a word stock power supply signal and a word stock grounding signal.

The vector font library chip 4 comprises a storage module, a decoding module, a power supply boosting module, a logic control module, a serial interface module and a cache module.

The storage module comprises a pre-stored GBK black body vector word library module, a GBK Song imitation vector word library module, a GBK regular body vector word library module, a Latin character vector word library module and an ASCII code vector word library module.

The decoding module includes a row decoder and a column decoder.

The cache module comprises an address register and a data register.

The driving chip 3 is integrated with an MCU (micro controller unit), an SRAM (static random access memory) and a display screen logic control chip in an SOC (system on chip) mode.

The driver chip 3 is a Lesheng LT268 driver chip.

The vector word stock chip 4 is connected with the MCU microcontroller in the driving chip 3 and transmits the font data to the MCU microcontroller, the MCU microcontroller analyzes the font data and transmits the font data and the display signal to the driving chip 3, and the driving chip 3 receives the display signal and controls the display screen 1 to display.

The display signal includes vector font data and display coordinate data.

The driving chip 3 is also provided with a serial port communication interface, an emulator interface and a power interface. The serial port communication interface is used for receiving instructions of the display module, is a UART interface and adopts 4-pin 2.54 flat cables as serial port wiring. The simulator interface is used for connecting an external simulator connected with the serial port screen. The power interface is used for connecting the serial port screen to supply power for an external power supply of the serial port screen, and is a DC interface.

The driving chip 3 is further provided with a signal interface connected with the display screen 1, and the signal interface comprises an RGB interface, a UART interface and an MCU interface.

The serial port screen further comprises a lithium battery 6 welded on the double-layer PCB and used for supplying power to the whole serial port screen.

The utility model discloses in serial ports screen can be used to medical control panel terminal, industrial control equipment terminal, on-vehicle display terminal, elevator control terminal, fill among the electric pile charging information display terminal.

The utility model discloses a set up vector word storehouse chip 4 in the serial ports screen, can improve the fineness that shows the typeface in the serial ports screen, make it more have the practicality, can show many font size vector characters at the colored liquid crystal screen below 3.5 cun. The serial port screen includes: the display screen comprises a color display screen 1 below 3.5 inches, a double-layer PCB connected with the display screen 1, a high-pass vector font library chip 4 welded on the display screen 1, and a Lesheng LT268 driving chip welded on the display screen 1. The display screen 1 is connected with the double-layer PCB through the FPC. The double-layer PCB is provided with a voltage conversion circuit 7, and electromagnetic interference of the double-layer PCB is shielded by adopting a shielding case, so that the display screen 1 is prevented from being interfered by electromagnetic radiation. The serial port screen is further provided with a serial port communication interface, the 4-pin 2.54 flat cable is adopted as serial port wiring, the serial port screen is more flexible and convenient to use and more practical, and the serial port communication interface is used for receiving an operation instruction outside the serial port screen.

The high-pass vector word stock chip 4 adopts a DFN packaging mode and is a small-volume vector word stock chip 4.

The Lesheng LT268 driving chip adopts an SOC packaging mode and is a high-performance display screen 1 driving chip.

The MCU microcontroller that sets up in the driver chip 3 is used for realizing serial ports control function, and double-deck PCB board 2 still welds has lithium cell 6, can be used to auxiliary power supply, and the USB power interface of serial ports screen is main power supply interface.

The utility model has the advantages of simple structure, the circuit is succinct, easily production, save hardware storage cost, can overcome the technical problem of lattice word stock edge unevenness, enlargie back distortion when not increasing the cost. The high-pass vector character library chip is adopted to display the gray characters in the serial port screen, and the method has the following advantages: the defects that lattice characters have no gray level and the edges of character strokes are not smooth are overcome, the edges of characters displayed by using the high-pass vector word library chip have gray levels, the edges are smooth, and the display effect of the whole characters is more attractive; the vector font chip has small capacity, can save hardware storage cost, aims at the defects of large font capacity and the like realized by dot matrix characters and a pattern cutting mode, can realize smooth display of multiple font sizes and character edge gray levels by only one language and one font matched vector font of the high-pass vector font chip, and has extremely small required capacity.

The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A serial port screen comprising: the display screen and the PCB are connected with the display screen; the display screen is characterized in that a driving chip and a high-pass vector font chip connected with the driving chip are bonded on the display screen in an FPC and COB mode; and the display screen is also provided with a screen zooming key connected with the driving chip.

2. The serial port screen of claim 1, wherein the high-pass vector font chip is a high-pass GT5SLCD2S4A vector font chip.

3. The serial port screen of claim 1, wherein the driving chip is packaged with an MCU microcontroller, an SRAM memory, and a display screen logic control chip in an SOC manner.

4. The serial port screen of claim 1, wherein the PCB is a double-layer PCB, and the display screen is connected to the double-layer PCB by means of FPC.

5. The serial port screen of claim 1, wherein the PCB board is provided with a lithium battery and a voltage conversion circuit connected to the lithium battery and the driving chip.

6. The serial port screen of claim 1, wherein the display screen is adjacently provided with a backlight module, the PCB board is further provided with a backlight circuit connected to the driving chip, and the backlight circuit is connected to the backlight module.

7. The serial port screen of claim 1, wherein the display screen is an LCD display screen.

8. The serial port screen of claim 5, wherein the voltage conversion circuit and the backlight circuit are each provided with a shield for shielding electromagnetic interference.

9. A smart watch characterised in that it comprises a serial screen according to any one of claims 1 to 8.