CN201903839U - Illuminated keyboard structure - Google Patents

Abstract

The utility model discloses a luminous keyboard structure, it is in touch-control formula keyboard framework or in bridging formula keyboard framework, set up a compliance organic light emitting diode panel, and the material of touch-control formula keyboard framework also has the compliance, make this kind of compliance touch-control keyboard have luminous efficacy, and promote the production yield greatly when production, and when the operation is used, under the backlight condition that increases one deck compliance organic light emitting diode panel, make luminous keyboard have power consumption low, high luminous efficiency and low operating voltage's advantage, and can specifically promote luminous keyboard's performance.

Description

Illuminated keyboard structure

technical field

The utility model relates to a luminous keyboard, in particular to a keyboard structure using a flexible organic light emitting diode (FOLED) panel as a backlight source.

Background technique

At present, notebook computers are widely recognized and adopted by market operators and users because they have the functions of being easy to carry and process a large amount of document data. However, the thin key structure adopted by the current notebook computer keyboard is mainly used for the keypad. There is a scissors-type or bridging-type support structure for the assembly and connection between the keycap and the bottom plate; after checking the patent case of US Patent No. 6,545,232 and Taiwan Patent Announcement No. 570235 "thin light-transmitting keyboard", the previous patent was obtained by a The cold light board provides a light source, so that the engraved font symbols on the keycaps can present a single-color light-transmitting state;

Recently, due to the rapid development of technology, touch panels or touch screens have been widely used as command input devices in electronic products such as mobile phones and computers, and because Organic Light Emitting Diode (OLED) panels have been widely used in electrical appliances recently. For lighting and electronic products, the basic structure of organic light-emitting diode (OLED) panels is to use electric energy to excite the encapsulated luminescent material to emit fluorescence or phosphorescence. It has low power consumption, no heat generation, light and thin volume, and high-brightness lighting. characteristics, so it is recognized by the industry in terms of backlight applications.

Existing luminous keyboards, such as Taiwan Patent No. I242737 "luminous keyboard structure" invention patent case, use reflectors to reflect point light sources such as LEDs, and the light emitted by the point light sources enters the keys through reflection In the assembly, so as to achieve the luminous lighting effect of the keyboard. Although the aforementioned luminous keyboard can use reflection to reflect the light generated by the point light source and use it for lighting, however, because the light generated by the point light source such as LED is passive reflection, and the emitted light cannot be evenly dispersed throughout the keyboard, so the backlight The light source is still not uniform enough, so there is still room for improvement in the lighting effect.

Utility model content

Therefore, the purpose of this utility model is to solve the above problems, and provide a flexible organic light-emitting diode panel in the flexible keyboard body, thereby not only giving the keyboard an average backlight, but also achieving a better effect of the keyboard backlight , and can operate at a lower voltage to achieve a light-emitting keyboard structure that reduces power consumption.

Therefore, in order to achieve the above purpose, the utility model proposes a light-emitting keyboard structure, which includes: a light-transmitting touch panel, a printed film and a flexible organic light-emitting diode panel, wherein the touch panel is flexible and light-transmitting properties, and is electrically connected with a touch panel controller to form a touch panel module, and the touch panel controller is electrically connected between the touch panel and a micro-processing unit; the printed film, It is a flexible rectangular film-shaped printed film, which is correspondingly arranged on the bottom surface of the touch panel; and the flexible organic light emitting diode panel is electrically connected to a light source controller to form a flexible organic light emitting diode module , and the flexible organic light emitting diode panel is correspondingly located on the bottom surface of the printed film and the touch panel, the light source controller is electrically connected between the flexible organic light emitting diode panel and the micro-processing unit, and The brightness of the flexible organic light emitting diode panel is adjusted by the setting of the light source controller.

In order to achieve the above purpose, the utility model further proposes a light-emitting keyboard structure, including: a light-transmitting touch panel, an electronic paper and a flexible organic light-emitting diode board, wherein: the electronic paper is flexible and roughly It is rectangular and is electrically connected with an electronic paper controller to form an electronic paper module. Between the processors, the electronic paper is switched by touch to select and display the stored key symbol page; and the flexible organic light emitting diode panel is electrically connected to a light source controller to form a flexible organic light emitting diode module, and the flexible organic light emitting diode panel is correspondingly located on the bottom surface of the electronic paper and the light-transmitting touch panel, and the light source controller is electrically connected between the flexible organic light emitting diode panel and a micro-processing unit , and it adjusts the brightness of the flexible organic light emitting diode panel through the setting of the light source controller.

Furthermore, the utility model further proposes a light-emitting keyboard structure, including: a plurality of light-transmitting keycaps, a plurality of bridging structures, a rubber gasket, a thin-film circuit board, an aluminum plate and a flexible organic light-emitting diode panel ; Wherein the light-transmitting keycap is a square-shaped light-transmitting pressing assembly; the bridging structure is an integral rotating structure formed by the cross shaft of the first frame and the second frame, and each of the bridging structures The top edge and the bottom edge of the corresponding keycaps are respectively pivotally connected between each of the light-transmitting keycaps and an aluminum plate; the rubber gasket is made of light-transmitting material and is arranged on the bottom surfaces of a plurality of the bridging structures; the film circuit board , which is located between the rubber gasket and an aluminum plate; the aluminum plate, which is a rectangular button support plate; the flexible organic light emitting diode panel is electrically connected to a light source controller to form a flexible organic light emitting diode panel. The light emitting diode module adjusts the brightness of the flexible organic light emitting diode panel through the setting of the light source controller.

Description of drawings

Fig. 1 is a three-dimensional exploded view of the first embodiment of the luminous keyboard structure of the present invention.

FIG. 2 is a block diagram of a partial structure of the first embodiment of the light-emitting keyboard structure of the present invention.

FIG. 3 is a schematic structural view of the flexible OLED panel in the first embodiment of the present invention.

Fig. 4 is a three-dimensional exploded view of the second embodiment of the luminous keyboard of the present invention.

FIG. 5 is a block diagram of the partial structure of the second embodiment of the luminous keyboard of the present invention.

FIG. 6 is a structural block diagram of the electronic paper controller in the second embodiment of the luminous keyboard of the present invention.

Fig. 7 is a three-dimensional exploded view of the third embodiment of the luminous keyboard of the present invention.

FIG. 8 is a partially enlarged three-dimensional exploded view showing a single button of the third embodiment of the luminous keyboard of the present invention.

Fig. 9 is a combined cross-sectional view of the keys of the third embodiment of the luminous keyboard of the present invention.

Fig. 10 is a partially enlarged cross-sectional view of the keycap of the third embodiment of the luminous keyboard of the present invention.

Detailed ways

Regarding the technical means by which the utility model achieves the above-mentioned purpose, it will be described in detail below with the following implementation forms and diagrams.

Please refer to FIG. 1 and FIG. 2 at the same time, wherein FIG. 1 is a three-dimensional exploded view showing the first embodiment of the light-emitting keyboard structure of the present invention, and FIG. 2 is a block diagram showing the partial structure of the first embodiment of the light-emitting keyboard structure of the present invention.

The light-emitting keyboard structure 1 of the first embodiment of the present utility model includes a touch panel module 11, a virtual key sheet (in this embodiment, a printed diaphragm 12), a flexible organic light emitting diode (Flexible Organic Light Emitting Diode, FOLED) module 13 , a flexible base plate 14 and a micro-processing unit 15 .

A touch panel module 11 includes a substantially rectangular and flexible transparent touch panel 111 and a touch panel controller 112, the touch panel 111 has a transparent conductive glass layer (ITO Glass Layer) and Conductive film layer (ITO Film) (not shown in the figure, because it belongs to the prior art so will not repeat it), so as to achieve the performance of light-transmitting touch, and the touch panel controller 112 is electrically connected to the touch panel 111 and A micro-processing unit 15 is further electrically connected to a computer mainframe (not shown), wherein the touch panel controller 112 converts the analog signal generated by the user touching the touch panel 111 into a digital signal, And obtain its touch coordinate position information, and then convert this coordinate position information into a key signal, and transmit the touch coordinate data to the micro-processing unit 15 through the serial transmission interface, so as to achieve the operation of the touch panel module 11 for input The performance of the signal; moreover, the touch button signal can also simultaneously activate a speaker or a vibrator (not shown) to emit a beep sound or vibrate to prompt and confirm that the touch button has been activated.

A virtual key sheet, in this embodiment is a printed film 12, the printed film 12 is roughly a rectangular light-transmitting and flexible film-like structure, which is correspondingly arranged on the bottom surface of the light-transmitting touch panel 111. A plurality of virtual buttons 121 and a gesture touch area 122 are printed on the surface of the printed film 12, and each virtual button 121 is correspondingly marked with a preset letter/number or function symbol, so that it can be used by the light-transmitting touch panel. The top surface of 111 sees through the virtual button 121 and the gesture touch area 122 correspondingly, so as to facilitate the user to operate the touch panel module 11 to achieve the functions of key symbol input and operation such as mouse gesture touch.

The flexible organic light emitting diode module 13 includes a substantially rectangular flexible organic light emitting diode (FOLED) panel 131 and a light source controller 132 (as shown in FIG. 2 ), and the flexible organic light emitting diode panel 131 corresponds to It is arranged on the bottom surface of the printed film 12 and the light-transmitting touch panel 111 so as to provide the backlight of the light-emitting keyboard structure 1, and the brightness of the light source of the flexible organic light-emitting diode panel 131 is set and adjusted by the light source controller 132 .

FIG. 3 shows a schematic structural view of the flexible organic light emitting diode panel 131 in the first embodiment of the present invention. The structure of the flexible organic light emitting diode panel 131 includes the bottom polymer plastic substrate 1311, and the stack A water-oxygen barrier layer 1312, a metal cathode layer 1313, a light-emitting layer 1314, and an anode layer 1315, wherein the polymer plastic substrate 1311 is made of a flexible material, and the metal cathode layer 1313 is a magnesium/silver alloy Materials, the light-emitting layer 1314 is an organic electroluminescence material, the anode layer 1315 is an indium tin oxide (ITO) material, and the organic electroluminescence material is very sensitive to water and oxygen, and the general plastic substrate has a permeability to water at room temperature It is about 0.1-100 grams per square meter per day (100-10-1g/m2/day (25°C)), which cannot completely block the penetration of water vapor and oxygen; in order to achieve the purpose of blocking water and oxygen, it must be on the plastic substrate 1311 and the metal cathode layer 1313 (inorganic conductive layer) are coated with a dense special material to prevent the penetration and diffusion of water and oxygen, and because of the interface problem between organic and inorganic materials, the material selection of the water and oxygen barrier layer 1312 It must be able to form a film uniformly without defects (Defect-Free), without pinholes (Pin Holes), and have high light transmittance and avoid the absorption of visible light during the coating process, and the multi-layer film process method To meet the functional requirements of the FOLED substrate.

Furthermore, the organic light-emitting diode (FOLED) has the following characteristics: (1) the electroluminescence of the self-luminous layer, and its viewing angle reaches more than 165°; (2) the response time is fast, about less than 1 μs; (3) high luminous efficiency; ( 4) Low operating voltage, about 3-9 volts of DC voltage; (5) The thickness of the panel is thin, and a large-sized and flexible panel can be manufactured; therefore, the light-emitting keyboard structure 1 of the present invention uses a flexible organic light-emitting diode ( The FOLED) panel 131 is used as a backlight source, which can achieve the effects of reducing cost, improving luminous efficiency and reducing power consumption.

The bottom plate 14 is a generally rectangular and flexible insulating plate structure, and the bottom plate 14 is correspondingly disposed on the bottom surface of the flexible organic light emitting diode (FOLED) panel 131 to provide overall assembly support and light reflection.

The micro-processing unit 15 is electrically connected to the touch panel controller 112 and the light source controller 132 respectively, and is further electrically connected to a computer host to achieve the performance of processing the input signal of the user operating the touch panel module 11 .

Another embodiment (not shown in the figure), which makes the flexible touch panel 111 arranged on the bottom surface of a virtual key sheet (or printed film 12) and a flexible organic light emitting diode (FOLED) panel 131 , which can also achieve the effect of providing a keyboard light source.

Please refer to Fig. 4 to Fig. 6 of the second embodiment of the utility model at the same time, wherein Fig. 4 shows the three-dimensional exploded view of the second embodiment of the luminous keyboard structure of the utility model, and Fig. 5 shows the second embodiment of the luminous keyboard structure of the utility model. The block diagram of the partial structure of the embodiment, FIG. 6 shows the structural block diagram of the electronic paper controller in the second embodiment of the light-emitting keyboard structure of the present invention.

In order to make more use of the light-emitting keyboard structure 1 of the first embodiment of the present invention, the light-emitting keyboard structure 1 of the second embodiment of the present invention uses an electronic paper module 12' to replace the light-emitting keyboard structure of the first embodiment The printed film 12 in 1, specifically, replaces the printed film 12 with an electronic paper 121' of a virtual key sheet.

The electronic paper module 12' includes a substantially rectangular and flexible virtual key sheet (an electronic paper 121' in this embodiment) and an electronic paper controller 122', and the electronic paper 121' is correspondingly assembled on The bottom surface of a light-transmitting touch panel 111, wherein the electronic paper controller 122' includes: a display microcontroller 1221', used to control the display key signals of the electronic paper 121', and it is electrically connected to a microprocessing unit 15; a driver chip 1222', used to transmit the display word key signal from the display microcontroller 1221' to the electronic paper 121'; a static random access memory (SRAM, Static Random Access Memory) 1223', used to store complex numbers Data such as word key signals and symbols of the page touch key; a power supply 1224 ′, which supplies power to the driver chip 1222 ′ under the control of the display microcontroller 1221 ′.

Furthermore, the electronic paper 121' is combined with an electrode-driven backplane (not shown) with circuit patterns, and colored charged particles and dielectric liquid are encapsulated in the electronic paper 121', which are driven by the regulating electric field, so that The colored charged particles will move up and down in the dielectric liquid, if the white charged particles move to the upper layer, the user will see the reflected white in that area, and the electronic paper 121' has image memory effect, even if the power is turned off, its The display image content still exists, which is attributed to the characteristics of the bistable image (BistableImage), that is, it only needs to use electricity when the image needs to be updated, so it has eye-catching legibility and energy-saving performance; and the electronic paper 121 'Then the stored key symbol page can be selected and displayed by touching the switching selection key (not shown), so that the user can touch the virtual key sheet to achieve the operation performance of input.

Therefore, the virtual key sheet formed by the electronic paper 121' in the electronic paper module 12' can be converted and displayed with different key symbols, so that users can conveniently use different input methods.

Another implementation (not shown in the figure) is that a flexible opaque touch panel 111 is arranged on a virtual key sheet (or electronic paper 121') and a flexible organic light emitting diode (FOLED) ) the bottom surface of the panel 131, which can also achieve the transformation and display of different key symbols, and can also achieve the effect of providing a keyboard light source.

Please refer to Fig. 7 to Fig. 10 of the third embodiment of the utility model at the same time, wherein Fig. 7 shows a three-dimensional exploded view of the third embodiment of the luminous keyboard structure of the utility model, and Fig. 8 shows the third embodiment of the luminous keyboard structure of the utility model. The embodiment shows a partially enlarged three-dimensional exploded view of a single key. FIG. 9 shows a combined sectional view of a single key in the third embodiment of the light-emitting keyboard structure of the present invention. FIG. 10 shows a part of the keycap of the third embodiment of the light-emitting keyboard structure of the present invention Zoom in on the section view.

The luminous keyboard 1 of the third embodiment of the present invention consists of a plurality of light-transmitting keycaps 10, a plurality of bridging structures 20, a rubber gasket 30, a thin film circuit board 40, an aluminum plate 50 and a flexible organic light emitting diode Composed of modules 13.

The light-transmitting keycap 10 is a substantially rectangular light-transmitting pressing component. Two symmetrical pivot grooves 104 and two corresponding guide grooves 106 are formed on the bottom surface of the light-transmitting keycap 10, and a push button is formed in the center of the light-transmitting keycap 10. part 108, and the two pivot grooves 104 and the two guide grooves 106 are correspondingly pivotally connected to the top edge of the bridging structure 20; the four end sides of the top surface of the light-transmitting keycap 10 are respectively coated with multi-color light-transmitting pigment layers 101 , and the multi-color light-transmitting pigment layer 101 makes the four end sides of the light-transmitting keycap 10 present color change designs in different regions, and then, an opaque paint layer 102 is coated on the top surface of the multi-color light-transmitting pigment layer 101, And it removes part of the covering paint on the opaque paint layer 102 by laser engraving, so that the font symbols engraved on the four ends of the light-transmitting keycap 10 can be revealed and in a multi-color light-transmitting state, Then, a light-transmitting protective layer 103 is coated on the topmost layer of the light-transmitting keycap 10, so as to protect the engraved font symbol patterns on the lower layer through light transmission. In this embodiment, a variety of specific colors are used to classify and highlight the transparent English letters or phonetic radical symbols on the top surface of the light keycap 10, so as to enhance the user’s use of specific marking colors to quickly distinguish the light-transmitting keycap 10 of similar letters or radical symbols, and achieve the use efficiency that is conducive to keyboard operation .

The bridging structure 20 is an integral rotating structure formed by a first frame 21 and a second frame 22 pivoted by cross shafts, and two corresponding sliding shafts 211 extending inwardly from both sides of the top edge of the first frame 21 are slidably and pivotally connected to the transparent In the two corresponding guide grooves 106 on the bottom surface of the optical keycap 10, the two corresponding pivot shafts 221 on the top edge of the second frame 22 are rotatably pivoted in the two corresponding pivoting grooves 104 on the bottom surface of the light-transmitting keycap 10, and then Two corresponding pivot shafts 222 extending outward on both sides of the bottom edge of the second frame 22 are rotatably pivoted in two upwardly bent corresponding receiving seats 52 of an aluminum plate 50, while the corresponding sliding shafts on the bottom edge of the first frame 21 212 is slidably accommodated in the upwardly bent corresponding sliding seat 51 of the aluminum plate 50, so that the top edges and bottom edges of the plurality of bridging structures 20 can be pivotally connected to the plurality of light-transmitting keycaps respectively. 10 and the aluminum plate 50, so as to form a bridge type button structure respectively.

The rubber gasket 30 is made of a light-transmitting material and is arranged on the bottom surfaces of the plurality of bridging structures 20 , and a plurality of elastic pieces 38 are arranged on the rubber gasket 30 , and each elastic piece 38 is correspondingly arranged on the bottom surface of each light-transmitting keycap 10 , In order to make the bridging structure 20 have an elastic reset function, a plurality of perforations 32 are perforated on the rubber gasket 30 , and the plurality of perforations 32 correspond to the positions of the sliding shaft 212 and the pivot shaft 222 at the bottom edge of the bridging structure 20 .

The thin film circuit board 40 is a long thin film circuit board that conducts the button signal, and is located between the rubber gasket 30 and the aluminum plate 50. A plurality of openings 42 are pierced on the thin film circuit board 40, and the plurality of openings 42 correspond to Positions of the sliding shaft 212 and the pivot shaft 222 at the bottom edge of the bridging structure 20 .

The aluminum plate 50 is a roughly rectangular support plate, on which a plurality of bridging structures 20 are correspondingly pivotally connected, that is, a plurality of receiving seats 52 and sliding guide seats 51 are correspondingly extended upward on the aluminum plate 50 for corresponding pivot connection It is connected to the pivot shaft 222 and the sliding shaft 212 at the bottom edge of the plurality of bridging structures 20, and the aluminum plate 50 is pierced with a plurality of light-transmitting holes 53, and the plurality of light-transmitting holes 53 are correspondingly arranged on each light-transmitting key The position of the bottom surface of the cap 10 is such that light can be provided to the light-transmitting keycap 10 through the light-transmitting holes 53 .

The flexible organic light emitting diode module 13 includes a substantially rectangular flexible organic light emitting diode panel 131 and a light source controller 132 (as shown in FIG. 2 ), the light source controller 132 is electrically connected to the flexible organic light emitting diode Between the diode panel 131 and a microprocessing unit 15, the flexible organic light emitting diode panel 131 is turned on by the power supply to provide a light source for lighting, and the flexible organic light emitting diode panel 131 corresponds to each light-transmitting keycap 10 The position can present specific light sources of different colors, so that the light-transmitting keycap 10 can present a multi-color light-transmitting state, and then can transmit light to display the font symbol source on the light-transmitting keycap 10, and through the light source controller 132 Setting and adjusting the brightness of the flexible OLED panel 131 .

In the light-emitting keyboard structure of this embodiment, the flexible organic light-emitting diode panel 131 is assembled on the bottom surface of the aluminum plate 50, and the rubber gasket 30 and the film circuit board 40 are assembled on the top surface of the aluminum plate 50, so as to improve the overall light-emitting keyboard structure. Assembling and maintenance efficiency and its use efficiency, and then, the present embodiment uses the gap between the multi-color light-transmitting pigment layer on the top surface of the light-transmitting keycap 10 and the light source projected by the flexible organic light-emitting diode panel 131 to produce engraved font symbols Mixing and adjusting the color changes, so as to achieve the effect of multi-color translucent display of engraved font symbols on the translucent keycap 10 .

In addition, the flexible OLED panel 131 can also be arranged between the aluminum plate 50 and the thin film circuit board 40, or between the thin film circuit board 40 and the rubber gasket 30 (not shown in the figure), both of which can achieve The light source is provided for the function of the light-transmitting keycap 10 .

The disclosure of the above-mentioned implementation forms is used to illustrate the present utility model, not to limit the present utility model, so any change of numerical values or replacement of equivalent components should still belong to the category of the present utility model. From the above detailed description, those skilled in the art can understand that the utility model can indeed achieve the above-mentioned purpose.

Claims (8)

1. A light-emitting keyboard structure, comprising: a light-transmitting touch panel, a virtual key sheet and a flexible organic light-emitting diode panel, wherein, The light-transmitting touch panel has flexibility and light-transmitting characteristics, and is electrically connected with a touch panel controller to form a touch panel module, and the touch panel controller is electrically connected to the light-transmitting touch panel and a micro-processing unit; The virtual key sheet is a flexible rectangular light-transmitting word key film, which is correspondingly arranged on the bottom surface of the light-transmitting touch panel; and The flexible organic light emitting diode panel is electrically connected to a light source controller to form a flexible organic light emitting diode module, and the flexible organic light emitting diode panel is correspondingly arranged on the virtual key sheet and the light-transmitting touch panel. The bottom surface of the control board, the light source controller is electrically connected between the flexible organic light emitting diode panel and the micro-processing unit, and it adjusts the flexible organic light emitting diode panel by setting the light source controller brightness. 2. The luminous keyboard structure according to claim 1, wherein the virtual key sheet is printed with a plurality of virtual keys and a gesture touch area on the surface, and each of the virtual keys is correspondingly marked with a specific letter/number or function symbol printed film. 3. The luminous keyboard structure according to claim 1, wherein the virtual key sheet is an electronic paper, and the electronic paper is electrically connected to an electronic paper controller to form an electronic paper module, and the electronic paper module is electrically connected to in the microprocessing unit. 4. The luminous keyboard structure as claimed in claim 3, wherein the electronic paper controller comprises: a display microcontroller for controlling the electronic paper display word key signal, and it is electrically connected to the micro-processing unit; A drive chip, used to transmit the display word key signal from the display microcontroller to the electronic paper; a static random access memory, used to store the word key signal and symbol data of multiple pages of touch keys, and the electronic paper Selecting and displaying the stored word key symbol page by touch switching; a power supply, which is under the control of the display microcontroller to supply power to the driver chip. 5. A light-emitting keyboard structure, comprising: a touch panel, a virtual key sheet and a flexible organic light-emitting diode panel, wherein, The touch panel is flexible and electrically connected with a touch panel controller to form a touch panel module, and the touch panel is correspondingly located on the virtual key sheet and the flexible organic light emitting diode panel bottom surface; The virtual key sheet is a flexible rectangular light-transmitting word key film, which is correspondingly arranged on the top surface of the flexible organic light emitting diode panel and the touch panel; and The flexible organic light emitting diode panel is electrically connected to a light source controller to form a flexible organic light emitting diode module, and the flexible organic light emitting diode panel is correspondingly arranged on the virtual key sheet and the touch panel Between, the light source controller is electrically connected between the flexible OLED panel and a micro-processing unit, and it adjusts the brightness of the flexible OLED panel through the setting of the light source controller. 6. The luminous keyboard structure according to claim 5, wherein the virtual key sheet is printed with a plurality of virtual keys and a gesture touch area on the surface, and each of the virtual keys is correspondingly marked with a specific letter/number or function symbol printed film. 7. The luminous keyboard structure according to claim 5, wherein the virtual key sheet is an electronic paper, and the electronic paper is electrically connected to an electronic paper controller to form an electronic paper module, and the electronic paper module is electrically connected to the microprocessing unit. 8. The luminous keyboard structure as claimed in claim 7, wherein the electronic paper controller comprises: a display microcontroller for controlling the electronic paper to display key signals, and it is electrically connected to the micro-processing unit; A driver chip, used to transmit the display word key signal from the display microcontroller to the electronic paper; a static random access memory, used to store data such as word key signals and symbols of multiple pages of touch keys, and the electronic paper Selecting and displaying the stored word key symbol page by touch switching; a power supply, which is under the control of the display microcontroller to supply power to the driver chip. the

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