Electromagnetic writing brush and OLED writing system
By combining electromagnetic brushes and flexible OLED Incell touch displays, using pressure sensors and electromagnetic touch technology, the problems of low touch accuracy and poor portability of existing electronic pen writing systems are solved, and high-precision and portable electronic writing are achieved, reflecting the real brush calligraphy effect.
Patent Information
- Application Number
- CN202411606396.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-12
- Publication Date
- 2025-03-04
AI Technical Summary
The existing electronic pen writing system uses an LCD rigid display screen, which is not portable, has poor touch accuracy, and cannot reflect the subtle handwriting of the brush, resulting in the loss of details on the edges of the electronic pen writing font and lack of real brush calligraphy effects.
The electromagnetic brush and flexible OLED Incell touch display screen are used to detect and transmit pressure values through the pressure sensor and electromagnetic touch IC in the electromagnetic brush, determine the intensity of electromagnetic waves, emit and receive electromagnetic waves, and determine the magnetic flux through the electromagnetic antenna of the flexible OLED display screen, accurately locate the contact area and display the words.
It improves writing accuracy, provides a paper-like writing experience, enhances portability, can accurately display the thickness of the handwriting, and reflects the real brush calligraphy effect.
Smart Images
Figure CN119556806A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of electronic writing tools, in particular to an electromagnetic writing brush and an OLED writing system. Background Art
[0002] Brush writing is an important art form in traditional Chinese culture. However, traditional brush writing requires consumables such as ink, paper and brush, and requires attention to maintenance after writing. The electronic pen writing system replaces the traditional brush with a stylus and a display device to realize the electronicization of writing.
[0003] However, the current electronic pen writing system generally uses an LCD rigid display screen, which is not easy to carry and does not have a paper-like effect. The existing touch technology uses infrared touch or capacitive touch. These two touch methods have poor touch accuracy and cannot reflect the fine hair of the brush. Therefore, the edges of the electronic brush-written fonts lose details and do not have the real brush calligraphy effect. Summary of the invention
[0004] In view of the shortcomings of the prior art, the object of the present invention is to provide an electromagnetic writing brush and an OLED writing system including an electromagnetic writing brush and a flexible OLED Incell touch display screen;
[0005] The electromagnetic writing brush is equipped with a pressure sensor, a first electromagnetic touch IC and an electromagnetic wave transmitting device;
[0006] When the electromagnetic writing brush contacts the flexible OLED Incell touch display screen, the pressure sensor is used to detect the pressure value between the electromagnetic writing brush and the flexible OLED Incell touch display screen, and transmit the pressure value to the first electromagnetic touch IC. The first electromagnetic touch IC determines the electromagnetic wave intensity according to the pressure value, and then the electromagnetic wave transmitting device transmits the electromagnetic wave according to the determined electromagnetic wave intensity.
[0007] The flexible OLED Incell touch display screen includes four layers, which are, in order from the outside to the inside, an encapsulation layer, a light-emitting display layer, an active device and antenna layer, and a flexible OLED display substrate;
[0008] The light-emitting display layer includes an organic light-emitting material, which is composed of three RGB pixels and a black matrix, and the organic light-emitting material has an anode and a cathode. Under the action of an electric field, the anode and the cathode provide electrons and holes to drive the light-emitting layer to emit light;
[0009] The active device and antenna layer are configured with a plurality of X electromagnetic antennas and a plurality of Y electromagnetic antennas, and the active device and antenna layer are connected to the second electromagnetic touch control IC;
[0010] After the electromagnetic writing brush emits electromagnetic waves, the X electromagnetic antenna and the Y electromagnetic antenna of the active device and the antenna layer are used to receive the electromagnetic waves, and send the received electromagnetic waves to the second electromagnetic touch IC, and then determine the magnetic flux through the second electromagnetic touch IC, and then determine the target area of contact between the electromagnetic writing brush and the flexible OLED Incell touch display screen according to whether the magnetic flux in all areas of the flexible OLED Incell touch display screen changes, wherein the magnetic flux of the area receiving the electromagnetic wave in all areas of the flexible OLED Incell touch display screen will change, and the magnetic flux of the area not receiving the electromagnetic wave will not change; and determine the thickness of the displayed handwriting according to the size of the magnetic flux, and display the handwriting in the target area of the flexible OLED Incell touch display screen according to the determined thickness of the handwriting.
[0011] Optionally, the electromagnetic writing brush is equipped with a pressure sensor, and the electromagnetic writing brush is also equipped with a pre-trained model for determining the intensity of electromagnetic waves, the pre-trained model for determining the intensity of electromagnetic waves is obtained by model training based on training samples, the training samples include input samples and output samples, the input samples are historical pressure values between the electromagnetic writing brush and the flexible OLED Incell touch display screen, and the output samples are electromagnetic wave intensities corresponding to the historical pressure values;
[0012] Based on this, the first electromagnetic touch IC determines the electromagnetic wave intensity according to the pressure value, including:
[0013] The pressure value is input into a pre-trained model for determining the electromagnetic wave intensity to obtain an electromagnetic wave intensity.
[0014] Optionally, the electromagnetic writing brush is equipped with a plurality of pressure sensors;
[0015] Based on this, the first electromagnetic touch IC determines the electromagnetic wave intensity according to the pressure value, including:
[0016] For each pressure sensor, a pressure value is detected, and for each pressure value, the electromagnetic wave intensity is determined, one pressure value corresponds to one electromagnetic wave intensity, and then a plurality of electromagnetic wave intensities are obtained, wherein when the electromagnetic wave transmitting device transmits electromagnetic waves according to the determined electromagnetic wave intensity, the electromagnetic wave transmitting device transmits one electromagnetic wave according to each electromagnetic wave intensity, that is, the electromagnetic wave transmitting device transmits electromagnetic waves equal in number to the electromagnetic wave intensity;
[0017] Optionally, the distance between two adjacent X electromagnetic antennas is a value within a preset threshold interval, the distance between two adjacent Y electromagnetic antennas is a value within the preset threshold interval, each X electromagnetic antenna is parallel to a Gate line, and the distance between an X electromagnetic antenna and an adjacent Gate line is a preset threshold, each Y electromagnetic antenna is parallel to a Date line, and the distance between a Y electromagnetic antenna and an adjacent Date line is a preset threshold, and the Gate line and the Date line are placed below a black matrix area in the light-emitting display layer.
[0018] The beneficial effects of adopting the above technical solution are:
[0019] The present invention detects the pressure value between the electromagnetic brush and the flexible OLED Incell touch display screen through a pressure sensor configured with the electromagnetic brush, and obtains the electromagnetic wave intensity corresponding to the pressure value, and then emits electromagnetic waves, and receives the electromagnetic waves through the electromagnetic antenna in the flexible OLED Incell touch display screen, and determines the magnetic flux, and then determines the change in magnetic flux, and then determines the target area, and displays the handwriting in the target area. By converting the pressure value into the electromagnetic wave intensity, the thickness of the handwriting can be accurately displayed. By receiving the electromagnetic wave and converting it into magnetic flux through the electromagnetic antenna in the flexible OLED Incell touch display screen, the contact area between the electromagnetic brush and the flexible OLED Incell touch display screen can be accurately located according to whether the magnetic flux changes. Therefore, the writing accuracy can be improved. At the same time, through the flexible OLED display substrate in the flexible OLED Incell touch display screen, a paper-like writing experience can be provided, and the portability is also improved. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 This is a schematic diagram of an electromagnetic writing brush and an OLED writing system in an embodiment of the present invention;
[0021] Figure 2 It is a schematic diagram of the process of an electromagnetic writing brush and an OLED writing system in an embodiment of the present invention;
[0022] Figure 3 A schematic diagram of the relationship between a pressure value and an electromagnetic wave intensity in an embodiment of the present invention;
[0023] Figure 4 A schematic diagram of the structure of a flexible OLED Incell touch display screen according to an embodiment of the present invention;
[0024] Figure 5 is a schematic structural diagram of an active device and an antenna layer in an embodiment of the present invention;
[0025] Figure 6 A schematic diagram of a principle for determining a target area in an embodiment of the present invention. DETAILED DESCRIPTION
[0026] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.
[0027] In view of the problems existing in the prior art, the present invention provides an electromagnetic brush and an OLED writing system, including an electromagnetic brush and a flexible OLED Incell touch display screen, combined with Figure 1 and Figure 2 , the electromagnetic writing brush is equipped with a pressure sensor, a first electromagnetic touch IC and an electromagnetic wave transmitting device;
[0028] When the electromagnetic writing brush contacts the flexible OLED Incell touch display screen, the pressure sensor is used to detect the pressure value between the electromagnetic writing brush and the flexible OLED Incell touch display screen, and transmit the pressure value to the first electromagnetic touch IC. The first electromagnetic touch IC determines the electromagnetic wave intensity according to the pressure value, and then the electromagnetic wave transmitting device transmits the electromagnetic wave according to the determined electromagnetic wave intensity.
[0029] Among them, combined Figure 3 It can be understood that the greater the pressure value, the stronger the corresponding electromagnetic wave intensity. In order to ensure a real brush writing experience, a sophisticated pressure sensing device is required. Currently, commercial pressure sensors can achieve 8192 levels of pressure sensing and support the perception of tiny pressure changes.
[0030] In order to ensure that the ink traces of the electromagnetic brush are consistent with the writing effect of a real brush, it is necessary to ensure that the ink traces of each hair in the brush can be expressed. This can be achieved in the following two ways:
[0031] In a first implementation, the electromagnetic writing brush is provided with a pressure sensor, and the electromagnetic writing brush is also provided with a pre-trained model for determining the intensity of electromagnetic waves, wherein the pre-trained model for determining the intensity of electromagnetic waves is obtained by model training based on training samples, wherein the training samples include input samples and output samples, wherein the input samples are historical pressure values between the electromagnetic writing brush and the flexible OLED Incell touch display screen, and the output samples are electromagnetic wave intensities corresponding to the historical pressure values;
[0032] Based on this, the first electromagnetic touch IC determines the electromagnetic wave intensity according to the pressure value, including:
[0033] The pressure value is input into a pre-trained model for determining the electromagnetic wave intensity to obtain an electromagnetic wave intensity.
[0034] In a second implementation, the electromagnetic writing brush is equipped with a plurality of pressure sensors;
[0035] It should be noted that the multiple pressure sensors configured for the electromagnetic brush should be distributed inside and outside the brush, so that when writing, the force received by the hair in different parts can be collected.
[0036] Based on this, the first electromagnetic touch IC determines the electromagnetic wave intensity according to the pressure value, including:
[0037] For each pressure sensor, a pressure value is detected, and for each pressure value, the electromagnetic wave intensity is determined, one pressure value corresponds to one electromagnetic wave intensity, and then a plurality of electromagnetic wave intensities are obtained, wherein when the electromagnetic wave transmitting device transmits electromagnetic waves according to the determined electromagnetic wave intensity, the electromagnetic wave transmitting device transmits one electromagnetic wave according to each electromagnetic wave intensity, that is, the electromagnetic wave transmitting device transmits electromagnetic waves equal in number to the electromagnetic wave intensity;
[0038] Combination Figure 4 The flexible OLED Incell touch display screen includes 4 layers, which are encapsulation layer, light-emitting display layer, active device and antenna layer and flexible OLED display substrate in order from outside to inside; X / Y coils are designed in the flexible display substrate to form electromagnetic receiving antennas, which can accurately locate the position of the X / Y coils. The flexible OLED screen can be rolled up to provide a paper-like effect, which is easy to carry and improves the user's writing experience.
[0039] Among them, OLED (organic light-emitting diode) is a display technology that emits light through organic thin films, with the advantages of self-luminescence, high contrast, and fast response speed. Its flexibility and high resolution make it have broad application prospects in electronic writing devices.
[0040] The encapsulation layer is used to protect the internal structure and improve the service life and reliability of the equipment.
[0041] The light-emitting display layer includes an organic light-emitting material, which is composed of three RGB pixels and a black matrix, and the organic light-emitting material has an anode and a cathode. Under the action of an electric field, the anode and the cathode provide electrons and holes to drive the light-emitting layer to emit light;
[0042] The active device and antenna layer are configured with a plurality of X electromagnetic antennas and a plurality of Y electromagnetic antennas; the active device and antenna layer are connected to the second electromagnetic touch control IC;
[0043] The X electromagnetic antenna and the Y electromagnetic antenna are metal traces of the same material, which can be copper, aluminum, or their alloy metals, and are manufactured together with the TFT device using the same process technology. Therefore, no additional process cost is required, which is also an advantage compared to other solutions that are external to the electromagnetic coil.
[0044] Among them, combined Figure 5 , the distance between two adjacent X electromagnetic antennas is a value within a preset threshold interval, the distance between two adjacent Y electromagnetic antennas is a value within the preset threshold interval, each X electromagnetic antenna is parallel to a Gate line, a distance between an X electromagnetic antenna and an adjacent Gate line is a preset threshold, each Y electromagnetic antenna is parallel to a Date line, a distance between a Y electromagnetic antenna and an adjacent Date line is a preset threshold, and the Gate line and the Date line are placed below a black matrix region in the light-emitting display layer.
[0045] Among them, the X electromagnetic antenna and the Y electromagnetic antenna are both metal traces inside the OLED display. This internal trace is formed simultaneously in the process of forming the active device and the antenna layer, so no additional process is required, and it is built into the display panel, which is better than other solutions that make an additional electromagnetic induction coil outside the panel, making the writing device lighter and simpler. In order to ensure the writing accuracy of the brush, the electromagnetic touch accuracy is required to be around 0.1mm, that is, the distance between the antennas is about 0.1mm, but the spacing cannot be too small, which will affect the display area, so the spacing can be defined as 0.05mm~0.15mm, that is, the preset threshold interval. For example, for an OLED display of about 20 inches, about 6000 X electromagnetic antennas can be set, and about 3070 Y electromagnetic antennas can be set. The distance between two adjacent X electromagnetic antennas and the distance between two adjacent Y electromagnetic antennas are about 0.1mm.
[0046] It should be noted that the distance between the X electromagnetic antenna and the adjacent Gate line is a preset threshold, and the distance between the Y electromagnetic antenna and the adjacent Date line is a preset threshold, in order to ensure that the X electromagnetic antenna and the Y electromagnetic antenna are both placed under the black matrix area in the light-emitting display layer to avoid blocking the light-emitting display layer and affecting the display effect of the OLED display. However, the pitch value between the X and Y electromagnetic antenna matrices, that is, the distance must be greater than or equal to the pitch size of the pixel matrix of the light-emitting display layer, which is determined by the current touch accuracy. In order to reduce the impact of the electromagnetic antenna on the display effect, the preset threshold in the present invention is 2um, which can ensure that the X electromagnetic antenna and the Y electromagnetic antenna, as well as the Gate line and the Date line are all in the non-luminous area, so as not to block the light-emitting layer. The thickness range of the electromagnetic coil is the same as the metal thickness of the active device layer of the existing OLED display, with a thickness of about 0.2 to 0.8um and a width of 2 to 10um.
[0047] After the electromagnetic writing brush emits electromagnetic waves, the X electromagnetic antenna and the Y electromagnetic antenna of the active device and the antenna layer are used to receive the electromagnetic waves, and send the received electromagnetic waves to the second electromagnetic touch IC, and then determine the magnetic flux through the second electromagnetic touch IC, and then determine the target area of contact between the electromagnetic writing brush and the flexible OLED Incell touch display screen according to whether the magnetic flux in all areas of the flexible OLED Incell touch display screen changes, wherein the magnetic flux of the area receiving the electromagnetic wave in all areas of the flexible OLED Incell touch display screen will change, and the magnetic flux of the area not receiving the electromagnetic wave will not change; and determine the thickness of the displayed handwriting according to the size of the magnetic flux, and display the handwriting in the target area of the flexible OLED Incell touch display screen according to the determined thickness of the handwriting.
[0048] Among them, the greater the rate of change of magnetic flux, the thicker the displayed handwriting, that is, the heavier the pen tip, so the difference in writing pressure is converted into a difference in magnetic flux that can be recognized and detected by the electromagnetic touch IC, and based on this difference, it is converted into a difference in handwriting thickness.
[0049] In the specific implementation, combined with Figure 6 , from the direction of the X electromagnetic antenna, the area receiving the electromagnetic wave is from X4 to X8, that is to say, from the direction of the X electromagnetic antenna, the magnetic flux in this area will change, and the area in the direction of the Y electromagnetic antenna is the same, thereby determining the target area, Figure 5 The electromagnetic pen signal is an electromagnetic wave.
[0050] The electromagnetic brush and OLED writing system provided by the present invention provide an efficient, portable, and authentic electronic writing tool with high precision and flexible paper-like effect, which can enhance the writing experience of calligraphy enthusiasts and has broad application prospects and market potential. The present invention can be applied to the field of calligraphy education and training, and can provide a digital writing practice and evaluation platform; it can also be applied to artistic creation, and artists can use the system to create digital works, save and display electronic calligraphy works, and expand the expression form of traditional art; it can also be applied to business and office, and the system can be applied to business signatures, document annotations and other scenes to improve office efficiency and the digital level of document management.
[0051] The above description is only a preferred embodiment of the present disclosure and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the embodiments of the present disclosure is not limited to the technical solutions formed by a specific combination of the above-mentioned technical features, but should also cover other technical solutions formed by any combination of the above-mentioned technical features or their equivalent features without departing from the above-mentioned inventive concept. For example, the above-mentioned features are replaced with the technical features with similar functions disclosed in the embodiments of the present disclosure (but not limited to) to form a technical solution.
Claims
1. An electromagnetic writing brush and OLED writing system, characterized in that: Including electromagnetic brush and flexible OLED Incell touch display; The electromagnetic writing brush is equipped with a pressure sensor, a first electromagnetic touch IC and an electromagnetic wave transmitting device; When the electromagnetic writing brush contacts the flexible OLED Incell touch display screen, the pressure sensor is used to detect the pressure value between the electromagnetic writing brush and the flexible OLED Incell touch display screen, and transmit the pressure value to the first electromagnetic touch IC. The first electromagnetic touch IC determines the electromagnetic wave intensity according to the pressure value, and then the electromagnetic wave transmitting device transmits the electromagnetic wave according to the determined electromagnetic wave intensity. The flexible OLED Incell touch display screen includes four layers, which are, in order from the outside to the inside, an encapsulation layer, a light-emitting display layer, an active device and antenna layer, and a flexible OLED display substrate; The light-emitting display layer includes an organic light-emitting material, which is composed of three RGB pixels and a black matrix, and the organic light-emitting material has an anode and a cathode. Under the action of an electric field, the anode and the cathode provide electrons and holes to drive the light-emitting layer to emit light; The active device and antenna layer are configured with a plurality of X electromagnetic antennas and a plurality of Y electromagnetic antennas, and the active device and antenna layer are connected to the second electromagnetic touch control IC; After the electromagnetic writing brush emits electromagnetic waves, the X electromagnetic antenna and the Y electromagnetic antenna of the active device and the antenna layer are used to receive the electromagnetic waves, and send the received electromagnetic waves to the second electromagnetic touch IC, and then determine the magnetic flux through the second electromagnetic touch IC, and then determine the target area of contact between the electromagnetic writing brush and the flexible OLED Incell touch display screen according to whether the magnetic flux in all areas of the flexible OLED Incell touch display screen changes, wherein the magnetic flux of the area receiving the electromagnetic wave in all areas of the flexible OLED Incell touch display screen will change, and the magnetic flux of the area not receiving the electromagnetic wave will not change; and determine the thickness of the displayed handwriting according to the size of the magnetic flux, and display the handwriting in the target area of the flexible OLED Incell touch display screen according to the determined thickness of the handwriting.
2. The electromagnetic brush and OLED writing system according to claim 1, characterized in that: The electromagnetic writing brush is equipped with a pressure sensor, and the electromagnetic writing brush is also equipped with a pre-trained model for determining the intensity of electromagnetic waves, the pre-trained model for determining the intensity of electromagnetic waves is obtained by model training based on training samples, the training samples include input samples and output samples, the input samples are historical pressure values between the electromagnetic writing brush and the flexible OLED Incell touch display screen, and the output samples are electromagnetic wave intensities corresponding to the historical pressure values; Based on this, the first electromagnetic touch IC determines the electromagnetic wave intensity according to the pressure value, including: The pressure value is input into a pre-trained model for determining the electromagnetic wave intensity to obtain an electromagnetic wave intensity.
3. The electromagnetic brush and OLED writing system according to claim 1, characterized in that: The electromagnetic writing brush is equipped with a plurality of pressure sensors; Based on this, the first electromagnetic touch IC determines the electromagnetic wave intensity according to the pressure value, including: For each pressure sensor, a pressure value is detected, and for each pressure value, the electromagnetic wave intensity is determined. One pressure value corresponds to one electromagnetic wave intensity, and then multiple electromagnetic wave intensities are obtained. When the electromagnetic wave transmitting device transmits electromagnetic waves according to the determined electromagnetic wave intensity, the electromagnetic wave transmitting device transmits one electromagnetic wave according to each electromagnetic wave intensity, that is, the electromagnetic wave transmitting device transmits electromagnetic waves equal in number to the electromagnetic wave intensity.
4. The electromagnetic brush and OLED writing system according to claim 1, characterized in that: The distance between two adjacent X electromagnetic antennas is a value within a preset threshold interval, the distance between two adjacent Y electromagnetic antennas is a value within the preset threshold interval, each X electromagnetic antenna is parallel to a Gate line, and the distance between an X electromagnetic antenna and an adjacent Gate line is a preset threshold, each Y electromagnetic antenna is parallel to a Date line, and the distance between a Y electromagnetic antenna and an adjacent Date line is a preset threshold, and the Gate line and the Date line are placed below a black matrix area in the light-emitting display layer.