A graphic touch multi-color display intelligent liquid crystal module

Abstract

The present invention provides a graphic touch multi-color display intelligent liquid crystal module, which relates to the field of liquid crystal display. It includes a full-transmissive LCD screen integrated with a touch sensing layer, a 3-color LED backlight source, and a printed circuit board of an embedded system. When there is a touch operation on the LCD screen, the touch sensing film of the LCD screen sends an induction signal to the touch screen driving IC, and the touch screen driving IC sends a touch operation signal to the MCU. After the MCU recognizes it, corresponding instructions are made; the red, green, and blue 3-color LED light sources receive the control instructions of the MCU to generate 7-color backlight; after the LCD screen driving IC receives the instructions and data sent by the MCU, it generates display data and sends it to the LCD screen to display the result. The present invention can realize the combined display of multi-color light and information, and can also perform measurement, monitoring, and remote control through touch operations, enriching the color performance ability of the liquid crystal module, and can save traditional keyboards or buttons, better meeting the needs of touch display terminals, and expanding the application field of the liquid crystal display module.

Description

Technical Field

[0001] The present invention relates to the field of liquid crystal displays, and in particular to a color display liquid crystal module. Background Art

[0002] As is well known, a traditional liquid crystal display (LCD) module generally includes an LCD display screen, a monochromatic backlight, and an LCD driver IC circuit board. The three components are stacked and assembled together in sequence from top to bottom. Since its backlight usually has only one color of light source as the background color, and there is only an LCD driver display chip on the module driver board without any other intelligent control circuits and functions, the traditional LCD display module can only display monochromatic information and has no other intelligent and touch interaction functions. Summary of the Invention

[0003] In order to overcome the deficiencies of the prior art and address the shortcomings that the traditional LCD module can only display monochromatic information and has no other intelligent and touch interaction functions, the present invention proposes a graphic touch color display intelligent liquid crystal module. By adopting a backlight with red, green, and blue three-color LED light sources and adding embedded system control technology, as well as touch chips and measurement and control communication chips to expand intelligent functions, not only are the above problems overcome, but also the application fields and functions of the liquid crystal module are greatly expanded.

[0004] The technical solution adopted by the present invention to solve its technical problems is as follows:

[0005] The present invention designs a graphic touch color display intelligent liquid crystal module, which includes a full-transmissive and reflective LCD screen integrated with a touch sensing film, a red, green, and blue three-color LED backlight, and a printed circuit board of an embedded system. The LCD screen, the three-color LED backlight, and the printed circuit board of the embedded system are stacked and assembled into one body from top to bottom in sequence. The printed circuit board of the embedded system is provided with a microcontroller (MCU) with embedded software, an LCD screen driver IC, a touch screen driver IC, and a communication interface integrated circuit chip. The MCU controls the LCD screen driver IC and the three-color LED backlight to achieve color information display; when there is a touch operation on the LCD screen, the touch sensing film of the LCD screen sends a capacitance change induction signal to the touch screen driver IC, and the touch screen driver IC sends a corresponding touch operation signal to the MCU. After the MCU recognizes it and makes corresponding instructions, after receiving the instructions and data sent by the MCU, the LCD screen driver IC generates corresponding display data and sends it to the LCD screen for display results.

[0006] On the inner surface of the upper glass of the LCD screen, a touch sensing film layer is first constructed. Then, the upper glass and the lower glass of the LCD screen are encapsulated together with a sealing frame to form an encapsulation box. Liquid crystal is injected into the encapsulation box, and then full-transparency polarizing films are respectively pasted on the outer surfaces of the upper glass and the lower glass of the LCD screen, thus forming the full-transparency and reverse display mode LCD screen integrated with a touch sensing film, which can sense finger touches and make corresponding touch responses.

[0007] Among them, the 3-color LED backlight has four control electrodes, namely the positive electrodes of a red LED, a green LED, and a blue LED and a common negative electrode GND. The common negative electrode GND is fixedly grounded. When the MCU issues control instructions and the positive electrodes of the red light R, the green light G, and the blue light B are respectively connected in single path or multi-path, 7 kinds of single lights and mixed lights can be generated. Among them, the 7 kinds of lights include three monochromatic lights of red light, green light, and blue light and four mixed lights. The mixed lights are respectively yellow light formed by the combination of red light and green light, purple light formed by the combination of red light and blue light, cyan light formed by the combination of blue light and green light, and white light formed by the combination of red light, blue light, and green light. The lights of 7 colors are transmitted through the display area on the LCD screen to form a colorful display.

[0008] The communication interface integrated circuit chip includes a measurement and control chip and a wireless communication chip. Among them, the measurement and control chip realizes the conversion of analog-to-digital or digital-to-analog signals, and the wireless communication chip realizes the wireless transceiver of data and instructions between the MCU and the remote control terminal.

[0009] The beneficial effect of the present invention is to propose a graphic touch and colorful display intelligent liquid crystal module, which can not only realize the combined display of colorful lights and information, but also perform measurement, monitoring, and remote control through the touch operation on the display screen, greatly enriching the color performance ability of the liquid crystal module to display information, touch operability, and saving traditional keyboards or buttons, and can better meet the needs of modern society for light, thin, small, and multifunctional touch display terminals, increasing the touch intelligent operation function of the liquid crystal display module, integrating traditional operation buttons on the display screen, making the liquid crystal display module not only a display window, but also a compact visual touch operation interface terminal, greatly expanding the application field of the liquid crystal display module, especially in the fields of consumer electronics, automotive electronics, smart home appliances, robots, industrial intelligent control, and the Internet of Things. Description of the Drawings

[0010] Figure 1 It is the main assembly structure diagram of the present invention.

[0011] Figure 2 It is the schematic diagram of the principle of generating 7-color light transmission display by the three-color light backlight of the present invention.

[0012] Figure 3It is a schematic installation structure diagram of the full-transmissive and reflective display mode LCD screen with a self-integrated touch sensing film of the present invention.

[0013] Figure 4 It is a display legend of the top view of the LCD screen with a self-integrated touch sensing film layer of the present invention.

[0014] Figure 5 It is a block diagram of the working principle of the control circuit board of the embedded system of the present invention.

[0015] Among them, 1 - full-transmissive and reflective display mode LCD screen with a self-integrated touch sensing film, 2 - backlight of 3-color LED lights, 3 - control circuit board of the embedded system, 201 - red, green, and blue (RGB) three-color light sources, 101 - lower glass of the LCD screen, 102 - liquid crystal chamber of the LCD screen, 103 - sealant frame of the liquid crystal cell of the LCD screen, 104 - upper glass of the LCD screen, 105 - full-transmissive polarizing film of the LCD screen, 106 - area touch sensing film layer, 301 - main control chip (MCU / CPU) of the embedded system, 302 - display driver IC, 303 - display screen touch IC, 304 - multi-channel AD / DA measurement and control interface circuit, 305 - Bluetooth / wireless communication interface circuit. Specific embodiments

[0016] The present invention will be further described below in conjunction with the drawings and embodiments.

[0017] As Figure 1 shown, a full-transmissive and reflective display mode LCD screen with a self-integrated touch sensing film, a backlight with 3-color LED lights, and a control circuit board of the embedded system are stacked and assembled together from top to bottom in sequence, and a graphic touch multi-color display intelligent liquid crystal module described in the present invention can be formed.

[0018] The present invention designs a graphic touch multi-color display intelligent liquid crystal module, which includes a full-transmissive and reflective display mode LCD screen with an integrated touch sensing film, a backlight of red, green, and blue 3-color LED lights, and a printed circuit board of the embedded system. Among them, the LCD screen, the backlight of 3-color LED lights, and the printed circuit board of the embedded system are stacked and assembled into one from top to bottom in sequence. The printed circuit board of the embedded system is equipped with a microcontroller (micro control unit, MCU) with embedded software, an LCD screen driver IC, a touch screen driver IC, and a communication interface integrated circuit chip. The MCU controls the LCD screen driver IC and the backlight of 3-color LED lights to achieve multi-color information display. When there is a touch operation on the LCD screen, the touch sensing film of the LCD screen sends a capacitance change induction signal to the touch screen driver IC, and the touch screen driver IC sends a corresponding touch operation signal to the MCU. After the MCU recognizes it, it makes corresponding instructions. After receiving the instructions and data sent by the MCU, the LCD screen driver IC generates corresponding display data and sends it to the LCD screen to display the result.

[0019] On the inner surface of the upper glass of the LCD screen, a touch sensing film layer is first constructed. Then, the upper glass and the lower glass of the LCD screen are encapsulated together with a sealing frame to form an encapsulation box. Liquid crystal is injected into the encapsulation box, and then full-transparency polarizing films are respectively pasted on the outer surfaces of the upper glass and the lower glass of the LCD screen, thus forming the full-transparency and reverse-display mode LCD screen integrated with a touch sensing film, which can sense finger touches and make corresponding touch responses.

[0020] The LCD screen in the full-transparency and reverse-display mode is made to be powered-on and light-transmitting in the display area through a specified process. That is, when the LCD screen receives a working signal sent by the MCU through the LCD driving IC, namely a multi-pulse voltage of 3V, this area becomes a light-transmitting display area.

[0021] As Figure 3 shown, first, a multi-region touch sensing film layer is constructed on the inner surface of the upper glass. Then, the upper glass and the lower glass of the LCD screen are encapsulated together with a sealing frame to form a liquid crystal chamber. Next, liquid crystal is injected into the liquid crystal chamber. Finally, full-transparency polarizing films are respectively pasted on the outer surfaces of the upper glass and the lower glass of the LCD screen, thus forming the full-transparency and reverse-display mode LCD screen integrated with a touch sensing film according to the present invention.

[0022] As Figure 4 shown, the dotted-line box area shown as 106 in the figure is the constructed multi-region touch sensing film layer.

[0023] As Figure 2 shown, where a 3-color LED lamp serves as the light source of the backlight. It has four control electrodes, namely three positive electrodes of a red LED, a green LED, and a blue LED, and a common negative electrode GND. The common negative electrode GND is fixedly grounded. When the MCU issues control instructions and the three positive electrodes of the red lamp R, the green lamp G, and the blue lamp B are respectively connected in single path or multi-path, 7 kinds of single lights and mixed lights can be generated. Among them, the 7 kinds of lights include three monochromatic lights of red, green, and blue, and four mixed lights. The mixed lights are respectively yellow light formed by the combination of red light and green light, purple light formed by the combination of red light and blue light, cyan light formed by the combination of blue light and green light, and white light formed by the combination of red light, blue light, and green light. The 7 kinds of colored lights are transmitted through the display area on the LCD screen to form a colorful display.

[0024] The described communication interface integrated circuit chip includes a measurement and control chip and a wireless communication chip. Among them, the measurement and control chip realizes the conversion of analog-to-digital or digital-to-analog signals, and the wireless communication chip is responsible for the wireless transceiver of control data and instructions between the MCU and the remote control terminal. In the present invention, a Bluetooth chip is used to realize wireless communication.

[0025] As Figure 5 shown, the touch and colorful intelligent working principle is:

[0026] First, the three-color LED backlight receives LED control instructions and generates single-color or mixed-color 7-color light, which is projected onto the bottom of the LCD screen. At the same time, the fully transmissive and reflective LCD screen receives instructions and data from the LCD driver chip and correspondingly generates a fully transmissive display area. The 7-color backlight is transmitted through the fully transmissive display area to form colorful display information.

[0027] Second, when a specific pattern with a self-integrated touch sensing layer on the liquid crystal screen is touched by a finger, it will send a capacitance change sensing signal to the touch IC. The touch IC then sends a corresponding touch operation signal to the MCU. After the MCU recognizes it, it makes a corresponding operation instruction to realize the touch operation of the liquid crystal screen pattern.

[0028] Third, the MCU collects measurement and control data from multiple AD / DA interfaces and sends this data to the liquid crystal screen for corresponding data display, thus realizing the detection and monitoring functions for multiple objects.

[0029] Fourth, through a wireless communication interface such as Bluetooth, the MCU can receive remote control instructions from the mobile phone APP and send corresponding monitoring data to the mobile phone to realize remote control and real-time monitoring of the mobile phone.

Claims

1. A graphic touch multi-color display intelligent liquid crystal module, comprising a transflective LCD screen integrated with a touch sensing film, a red, green, and blue 3-color LED backlight, and a printed circuit board of an embedded system. Characterized in that: The LCD screen, the 3-color LED backlight, and the printed circuit board of the embedded system are stacked and assembled into one body from top to bottom. The printed circuit board of the embedded system is provided with a microcontroller with embedded software, an LCD screen driver IC, a touch screen driver IC, and a communication interface integrated circuit chip. The MCU controls the LCD screen driver IC and the 3-color LED backlight to achieve 7-color multi-color information display; when there is a touch operation on the LCD screen, the touch sensing film of the LCD screen sends a capacitance change induction signal to the touch screen driver IC, and the touch screen driver IC sends a corresponding touch operation signal to the MCU. After the MCU recognizes it, it makes corresponding instructions. After receiving the instructions and data sent by the MCU, the LCD screen driver IC generates corresponding display data and sends it to the LCD screen to display the result; First, a touch sensing film layer is constructed on the inner surface of the upper glass of the LCD screen, and then the upper glass and the lower glass of the LCD screen are encapsulated together with a sealing frame to form a packaging box. Liquid crystal is injected into the packaging box, and then full-transmission polarizing films are respectively pasted on the outer surfaces of the upper glass and the lower glass of the LCD screen, thus forming the transflective LCD screen integrated with the touch sensing film, which can sense finger touch and make corresponding touch responses; Among them, the 3-color LED backlight has three positive electrodes, namely a red LED, a green LED, and a blue LED, and a common negative electrode GND, a total of 4 control electrodes. The common negative electrode GND is fixedly grounded. When the MCU issues control instructions and the three positive electrodes of the red light R, green light G, and blue light B are respectively connected in single or multiple paths, 7 kinds of single lights and mixed lights can be generated. Among them, the 7 kinds of lights include three monochromatic lights, namely red light, green light, and blue light, and four mixed lights. The mixed lights are respectively yellow light formed by the combination of red light and green light, purple light formed by the combination of red light and blue light, cyan light formed by the combination of blue light and green light, and white light formed by the combination of red light, blue light, and green light. The 7 kinds of colored lights are transmitted through the display area on the LCD screen to form a multi-color display; The communication interface integrated circuit chip includes a measurement and control chip and a wireless communication chip. The measurement and control chip realizes the conversion of analog-to-digital or digital-to-analog signals, and the wireless communication chip realizes the wireless transceiver of data and instructions between the MCU and the remote control terminal.

Images