Organic light emitting diode dot matrix passive driving system and test box

Abstract

The utility model relates to the technical field of organic light-emitting diode display, in particular to an organic light-emitting diode dot matrix passive driving system and a test box. The system comprises a passive dot matrix display assembly and a control assembly, and the passive dot matrix display assembly is composed of an organic light emitting diode passive dot matrix; the control assembly is connected with the passive dot matrix display assembly, and the control assembly is used for adjusting the display picture of the passive dot matrix display assembly according to the current display requirement and adjusting the display frequency of the passive dot matrix display assembly according to the current display frequency. Therefore, through the organic light-emitting diode dot matrix passive driving system, the principle of passive driving display images can be demonstrated, a user is helped to better understand the principle and application of an organic photoelectric device, and the frontier science and the effect of the frontier science in daily life can be intuitively felt.

Description

Technical Field

[0001] The utility model relates to the technical field of organic light emitting diode driving, in particular to an organic light emitting diode dot matrix passive driving system and a test box. Background Art

[0002] Organic Light-Emitting Diode (OLED) is a current-type light-emitting diode device with organic semiconductor as functional material. Its principle is to emit light through the injection and recombination of carriers. Specifically, under the action of the electric field, the holes generated by the anode and the electrons generated by the cathode are injected and migrated to the hole transport layer and the electron transport layer respectively. At the same time, their energy is constantly increasing. When the two meet in the light-emitting layer, energy excitons are generated. When the excitons dissociate, their energy is radiated in the form of light and emits light. The luminous intensity is proportional to the injected current. In flat panel display technology, organic light-emitting diodes have the advantages of self-luminescence, high contrast, high response speed, and wide viewing angle. Utility Model Content

[0003] The utility model provides an organic light emitting diode dot matrix passive driving system and a test box. Through the organic light emitting diode dot matrix passive driving system, the principle of passive driving display image can be demonstrated, helping users to better understand the principle and application of organic photoelectric devices and intuitively feel the cutting-edge science and its role in daily life.

[0004] To achieve the above-mentioned purpose, the first embodiment of the utility model provides an organic light-emitting diode dot matrix passive driving system, including: a passive dot matrix display component and a control component, wherein:

[0005] The passive dot matrix display component is composed of an organic light emitting diode passive dot matrix;

[0006] The control component is connected to the passive dot matrix display component, and is used to adjust the display picture of the passive dot matrix display component according to the current display demand, and adjust the display frequency of the passive dot matrix display component according to the current display frequency.

[0007] According to an embodiment of the present invention, the above-mentioned organic light emitting diode dot matrix passive driving system further includes:

[0008] A power supply component is connected to the passive dot matrix display component and the control component respectively, and is used to supply power to the passive dot matrix display component and the control component respectively.

[0009] According to one embodiment of the utility model, the control component includes:

[0010] A filtering and boosting circuit, the filtering and boosting circuit is connected to the power supply component and is used to filter the input voltage of the power supply component and output it as a first target voltage;

[0011] a filtering and step-down circuit, the filtering and step-down circuit being connected to the power supply component and configured to filter the input voltage of the power supply component and output it as a second target voltage, wherein the second target voltage is lower than the first target voltage;

[0012] A control circuit is connected to the passive dot matrix display component, and is used to control the pixels on the dot matrix of the passive dot matrix display component to light up row by row according to the current display demand.

[0013] The filtering and boosting circuit comprises:

[0014] A first resistor, one end of which is connected to a first power supply access node;

[0015] a first diode, wherein a cathode of the first diode is connected to the other end of the first resistor;

[0016] a first inductor, wherein one end of the first inductor is connected to the anode of the first diode, and the other end of the first inductor is connected to a second power supply access node;

[0017] a boost converter, wherein a first end of the boost converter is respectively connected to an anode of the first diode and one end of the first inductor, a second end of the boost converter is grounded, and a fourth end of the boost converter and a sixth end of the boost converter are both connected to the other end of the first inductor;

[0018] a first capacitor, one end of the first capacitor being connected to the other end of the first resistor and the cathode of the first diode respectively, and the other end of the first capacitor being grounded;

[0019] a second capacitor, one end of the second capacitor being connected to the other end of the first resistor and the cathode of the first diode respectively, and the other end of the second capacitor being grounded;

[0020] a second resistor, one end of the second resistor being connected to the other end of the first resistor and the cathode of the first diode respectively;

[0021] a third resistor, one end of the third resistor being connected to the other end of the second resistor, and the other end of the third resistor being grounded;

[0022] a third capacitor, one end of the third capacitor being respectively connected to the other end of the first resistor and the cathode of the first diode, and the other end of the third capacitor being respectively connected to a connection node of the second resistor and the third resistor and a third end of the boost converter;

[0023] a fourth capacitor, one end of the fourth capacitor being connected to the fifth end of the boost converter, and the other end of the fourth capacitor being grounded;

[0024] A fifth capacitor, one end of which is connected to the other end of the first inductor and the second power supply access node respectively, and the other end of the fifth capacitor is grounded.

[0025] According to an embodiment of the utility model, the filtering and voltage-reducing circuit comprises:

[0026] a sixth capacitor, one end of which is connected to the second power supply access node, and the other end of which is grounded;

[0027] a seventh capacitor, one end of the seventh capacitor being connected to one end of the sixth capacitor and the second power supply access node respectively, and the other end of the seventh capacitor being connected to the other end of the sixth capacitor;

[0028] a voltage stabilizer, wherein a first end of the voltage stabilizer is respectively connected to one end of the sixth capacitor, one end of the seventh capacitor and the second power supply access node, a second end of the voltage stabilizer is connected to the other end of the seventh capacitor, and a third end of the voltage stabilizer is connected to the first end of the voltage stabilizer;

[0029] an eighth capacitor, one end of which is connected to the fourth end of the voltage regulator and the third power supply access node respectively, and the other end of which is grounded;

[0030] A ninth capacitor, one end of the ninth capacitor is connected to the third power supply access node, and the other end of the ninth capacitor is grounded.

[0031] According to an embodiment of the present invention, the above-mentioned organic light emitting diode dot matrix passive driving system further includes:

[0032] A bracket for supporting the organic light emitting diode dot matrix passive driving system.

[0033] According to an embodiment of the present invention, the above-mentioned organic light emitting diode dot matrix passive driving system further includes:

[0034] A frequency switching component is arranged on the bracket, and the frequency switching component is connected to the control component and is used for collecting the current display frequency.

[0035] According to an embodiment of the present invention, the above-mentioned organic light emitting diode dot matrix passive driving system further includes:

[0036] A screen switching component is arranged on the bracket, and the screen switching component is connected to the control component, and is used for collecting the current display demand.

[0037] According to an embodiment of the utility model, the control component is connected to the passive dot matrix display component via a flexible connection.

[0038] According to the organic light emitting diode dot matrix passive driving system proposed in the embodiment of the utility model, the passive dot matrix display component composed of the organic light emitting diode passive dot matrix is ​​used to display the picture; the display picture of the passive dot matrix display component is adjusted according to the current display demand by the control component, and the display frequency of the passive dot matrix display component is adjusted according to the current display frequency. Therefore, through the organic light emitting diode dot matrix passive driving system, the principle of passive driving display image can be demonstrated, helping users to better understand the principle and application of organic optoelectronic devices, and intuitively feel the cutting-edge science and its role in daily life.

[0039] In order to achieve the above-mentioned object, the second embodiment of the utility model provides a test box, comprising:

[0040] Test chamber body;

[0041] The organic light emitting diode dot matrix passive driving system described in the first aspect of the embodiment, the organic light emitting diode dot matrix passive driving system is arranged in the test box body;

[0042] An integrated power supply is arranged in the test box body, and the integrated power supply is used to supply power to the organic light emitting diode dot matrix passive driving system.

[0043] According to the test box proposed in the embodiment of the utility model, the principle of passive drive display image can be demonstrated through the organic light emitting diode dot matrix passive drive system, which helps users better understand the principles and applications of organic optoelectronic devices and intuitively experience cutting-edge science and its role in daily life.

[0044] Additional aspects and advantages of the present invention will be given in part in the following description and in part will become apparent from the following description or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0046] Figure 1 A block diagram of an organic light emitting diode dot matrix passive driving system provided according to an embodiment of the utility model;

[0047] Figure 2is a block diagram of an organic light emitting diode dot matrix passive driving system according to another embodiment of the utility model;

[0048] Figure 3 It is a structural schematic diagram of a passive dot matrix display component according to an embodiment of the utility model;

[0049] Figure 4 is a block diagram of a control component according to an embodiment of the utility model;

[0050] Figure 5 It is a connection diagram of a filter boost circuit of a control component according to an embodiment of the utility model;

[0051] Figure 6 It is a connection diagram of a filter and voltage-reducing circuit of a control component according to an embodiment of the utility model;

[0052] Figure 7 A connection diagram of a control and storage circuit according to an embodiment of the utility model;

[0053] Figure 8 is a connection diagram of a driving circuit according to an embodiment of the utility model;

[0054] Fig. 9 A schematic diagram of high-frequency display of Chinese characters and digital images according to an embodiment of the utility model;

[0055] Fig.10 A schematic diagram of displaying letter images with adjustable frequency according to an embodiment of the utility model;

[0056] Fig.11 A schematic diagram of displaying a grayscale image with adjustable frequency according to an embodiment of the utility model;

[0057] Fig.12 The figure is a block diagram of a test box according to an embodiment of the utility model. DETAILED DESCRIPTION

[0058] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0059] The organic light emitting diode dot matrix passive driving system and the test box proposed according to the embodiment of the utility model are described below with reference to the accompanying drawings. First, the organic light emitting diode dot matrix passive driving system proposed according to the embodiment of the utility model is described with reference to the accompanying drawings.

[0060] Figure 1 The utility model is a block diagram of an organic light emitting diode dot matrix passive driving system according to an embodiment of the present invention.

[0061] For example, Figure 1 As shown, the organic light emitting diode dot matrix passive driving system 10 includes: a passive dot matrix display component 100 and a control component 200, wherein the passive dot matrix display component 100 is composed of an organic light emitting diode passive dot matrix; the control component 200 is connected to the passive dot matrix display component 100, and the control component 200 is used to adjust the display picture of the passive dot matrix display component 100 according to the current display demand, and adjust the display frequency of the passive dot matrix display component 100 according to the current display frequency.

[0062] Specifically, combined Figure 1 and Figure 2 As shown, the organic light emitting diode dot matrix passive driving system 10 of the embodiment of the utility model mainly includes but is not limited to: a passive dot matrix display component 100 and a control component 200, wherein the passive dot matrix display component 100 can be an m×n (such as 128×64) organic light emitting diode passive dot matrix display screen for displaying images or texts, which is composed of an organic light emitting diode passive dot matrix, indicating that an external power supply is not required to drive each pixel on the passive dot matrix, but each pixel on the passive dot matrix can be lit up by a control signal of the control component 200; the control component 200 is a control and driving circuit, which is connected to the passive dot matrix display component 100 and is used to control the display content and display frequency of the passive dot matrix display component 100, that is, it can switch the display screen of the passive dot matrix display component 100 according to the current display demand, and adjust the display frequency of the passive dot matrix display component 100 according to the current display frequency.

[0063] by Figure 3 Taking the 8×5 passive dot matrix display screen shown as an example, the passive dot matrix display component 100 can be selected line by line or alternately through the control component 200 by using the passive driving method to display images or texts. That is, in a time period, only one row of pixels (for example, the first row) is selected, and all pixels in the row can be adaptively lit according to the image or text content to be displayed (that is, all pixels of the selected row are either lit or not); when entering the next time period, the row that has been selected will no longer be selected in this time period, so it will no longer be illuminated, but the next row (for example, the second row) will be selected, and this time the selected row will also be adaptively illuminated according to the image or text content to be displayed, and so on, all rows in the organic light emitting diode passive dot matrix are selected once.

[0064] Among them, when the time for each row to be selected and displayed is relatively long, that is, the time for all rows on the passive dot matrix display component 100 to be selected and displayed is relatively long, such as greater than 20 microseconds, the user sees discrete rows of information and cannot observe a complete image; if the time for each row to be selected and displayed is very short, that is, the time for all rows on the passive dot matrix display component 100 to be selected and displayed is shorter than the user's visual persistence time (such as 20 microseconds), the user can still see the first row or even all rows of information on his retina when he sees the last row being lit up and displayed, so that the user can perceive a complete image.

[0065] Optionally, in some embodiments, the organic light emitting diode dot matrix passive driving system 10 further includes: a power supply component 300, which is respectively connected to the passive dot matrix display component 100 and the control component 200, and is used to supply power to the passive dot matrix display component 100 and the control component 200 respectively.

[0066] Specifically, if Figure 2 As shown, the organic light emitting diode dot matrix passive driving system 10 also includes a power supply component 300, which can be a portable battery, connected to the passive dot matrix display component 100 and the control component 200 respectively, and providing stable and appropriate power supply to the passive dot matrix display component 100 and the control component 200 respectively to ensure that both can work normally.

[0067] For ease of understanding, the following Figure 4 and Figure 5 The control component 300 is further described.

[0068] Optionally, in some embodiments, the control component 200 includes: a filtering boost circuit 201, a filtering buck circuit 202 and a control circuit 203, wherein the filtering boost circuit 201 is connected to the power supply component 300, and is used to filter the input voltage of the power supply component 300 and output it as a first target voltage; the filtering buck circuit 202 is connected to the power supply component 300, and is used to filter the input voltage of the power supply component 300 and output it as a second target voltage, wherein the second target voltage is less than the first target voltage; the control circuit 203 is connected to the passive dot matrix display component 100, and the control circuit 203 is used to control the pixels on the dot matrix of the passive dot matrix display component 100 to light up row by row according to the current display requirements.

[0069] Specifically, if Figure 4As shown, the filter boost circuit 201 and the filter buck circuit 202 are both connected to the power supply component 300. The filter boost circuit 201 can filter the input voltage of the power supply component 300 to remove clutter and interference in the voltage, and boost the filtered voltage (5V) to a first target voltage (such as 12V) and then output it, thereby providing a stable and satisfactory higher voltage for circuits or components that require high voltage operation; the filter buck circuit 202 can filter the input voltage of the power supply component 300, and boost the filtered voltage (5V) to a second target voltage (such as 3V) and then output it, thereby providing a stable and satisfactory low voltage for circuits or components that require low voltage operation; the control circuit 203 generates a corresponding control signal according to the current display demand, and the control signal can control each row of pixels on the dot matrix of the passive dot matrix display component 100 to light up in turn, thereby realizing image display.

[0070] Optionally, in some embodiments, Figure 5As shown, the filtering boost circuit 201 includes: a first resistor R9, a first diode D1, a first inductor L1, a boost converter U3, a first capacitor C15, a second capacitor C14, a second resistor R5, a third resistor R6, a third capacitor C13, a fourth capacitor C12 and a fifth capacitor C11, wherein one end of the first resistor R9 is connected to the first power access node (VCC); the cathode of the first diode D1 is connected to the other end of the first resistor R9; one end of the first inductor L1 is connected to the anode of the first diode D1, and the other end of the first inductor L1 is connected to the second power access node (+3V3); the first end (LX) of the boost converter U3 is respectively connected to the anode of the first diode D1 and one end of the first inductor L1, the second end (GND) of the boost converter U3 is grounded, the fourth end (SHDN) of the boost converter U3 and the sixth end (IN) of the boost converter U3 are both connected to the other end of the first inductor L1; one end of the first capacitor C15 is respectively connected to the anode of the first resistor R9 and the cathode of the first diode D1. The other end is connected to the cathode of the first diode D1, and the other end of the first capacitor C15 is grounded; one end of the second capacitor C14 is respectively connected to the other end of the first resistor R9 and the cathode of the first diode D1, and the other end of the second capacitor C14 is grounded; one end of the second resistor R5 is respectively connected to the other end of the first resistor R9 and the cathode of the first diode D1; one end of the third resistor R6 is connected to the other end of the second resistor R5, and the other end of the third resistor R6 is grounded; one end of the third capacitor C13 is respectively connected to the other end of the first resistor R9 and the cathode of the first diode D1, and the other end of the third capacitor C13 is respectively connected to the connection node of the second resistor R5 and the third resistor R6 and the third end of the boost converter U3; one end of the fourth capacitor C12 is connected to the fifth end of the boost converter U3, and the other end of the fourth capacitor C12 is grounded; one end of the fifth capacitor C11 is respectively connected to the other end of the first inductor L1 and the second power supply access node (+3V3), and the other end of the fifth capacitor C11 is grounded.

[0071] Optionally, in some embodiments, Figure 6As shown, the filtering and step-down circuit 202 includes: a sixth capacitor C4, a seventh capacitor C5, a voltage regulator 2021, an eighth capacitor C6 and a ninth capacitor C7, wherein one end of the sixth capacitor C4 is connected to the second power access node (+3V3), and the other end of the sixth capacitor C4 is grounded; one end of the seventh capacitor C5 is respectively connected to one end of the sixth capacitor C4 and the second power access node (+3V3), and the other end of the seventh capacitor C5 is connected to the other end of the sixth capacitor C4; the first end of the voltage regulator 2021 is respectively connected to one end of the sixth capacitor C4, the seventh capacitor C5 and the eighth capacitor C6. One end of the seventh capacitor C5 is connected to the second power access node (+3V3), the second end (ADJ) of the voltage regulator 2021 is connected to the other end of the seventh capacitor C5, and the third end (OUT) of the voltage regulator 2021 is connected to the first end of the voltage regulator 2021; one end of the eighth capacitor C6 is respectively connected to the fourth end (IN) of the voltage regulator 2021 and the third power access node (+5V), and the other end of the eighth capacitor C6 is grounded; one end of the ninth capacitor C7 is connected to the third power access node (+5V), and the other end of the ninth capacitor C7 is grounded.

[0072] Optionally, the control circuit 203 includes: Figure 7 The control and storage circuit shown in Figure 8 The driving circuit shown, the control circuit 203 can store at least one image data and control the pixels on the dot matrix of the passive dot matrix display component 100 to light up row by row according to the demand.

[0073] Optionally, in some embodiments, the organic light emitting diode dot matrix passive driving system 10 further includes: a bracket 400 for supporting the organic light emitting diode dot matrix passive driving system 10 .

[0074] like Figure 2 As shown, the bracket 400 can not only support the various parts of the organic light emitting diode dot matrix passive driving system 10, but also can fully display the various parts of the system and the connection between different parts, so that the user can see the actual components and connections of the system.

[0075] Optionally, in some embodiments, the organic light emitting diode dot matrix passive driving system 10 further includes: a frequency switching component 500 disposed on the bracket 400, the frequency switching component 500 is connected to the control component 300, and is used to collect the current display frequency.

[0076] It is understandable that if Figure 2As shown, the frequency of displaying the current image can be adjusted through the frequency switching component 500 of the bracket 400, that is, the user can actively adjust the display time (that is, frequency) of all rows on the passive dot matrix display component 100 through the frequency switching component 500, so that the user can experience the process from seeing individual rows being lit up to seeing the entire image, thereby understanding the principle of passive driving. Among them, the frequency of repeatedly displaying a frame of image can be adjusted between 0.01Hz and 80Hz.

[0077] Optionally, in some embodiments, the organic light emitting diode dot matrix passive driving system 10 further includes: a screen switching component 600 disposed on the bracket 400, and the screen switching component 600 is connected to the control component 200 for collecting current display requirements.

[0078] It is understandable that if Figure 2 As shown, the current display screen of the passive dot matrix display component 100 can be adjusted through the screen switching component 600 of the bracket 400, and the organic light emitting diode dot matrix passive driving system 10 can store at least one image. The user can actively change the displayed image through the screen switching component 600, wherein the displayable images include three types: Fig. 9 The images showing Chinese characters and numbers shown in Fig.10 The images of the displayed letters and Fig.11 The image shown shows grayscale.

[0079] Specifically, during the demonstration, the power switch button of the organic light emitting diode dot matrix passive driving system 10 is first turned on, and the passive dot matrix display component 100 displays text content introducing the principle of line-by-line display. When the screen switching component 600 (i.e., the display screen change button) is pressed, the first image begins to be displayed line by line through the passive dot matrix display component 100 at the slowest frequency (i.e., 0.01Hz). At this time, the frequency switching component 500 (i.e., the display frequency change button) can be pressed to increase the line-by-line scanning frequency of the image. Pressing the frequency switching component 500 again makes the line-by-line scanning frequency faster. During the process of adjusting the display frequency, the user can observe the passive dot matrix display component 100 and find that the displayed image will gradually become clearer and more complete as the scanning frequency increases, until the display frequency reaches 80Hz, the image can be fully observed. This is the process of the first image being displayed from line to line.

[0080] It should be noted that when the display frequency increases to the maximum value (i.e., 80 Hz), the frequency switching component 500 is pressed again, and the display frequency returns to the minimum value (i.e., 0.01 Hz), thereby entering the next cycle of the display frequency from slow to fast, and displaying the next image. If the screen switching component 600 is pressed again during the display of the first image, the passive dot matrix display component 100 will switch from the first image to the second image, and the screen switching component 600 will be pressed again to display the third image, and the screen switching component 600 will be pressed again to restore the display of the first image, thereby performing a cycle of displaying images.

[0081] Optionally, in some embodiments, the control component 200 is connected to the passive dot matrix display component 100 via a flexible connection.

[0082] That is to say, in the embodiment of the utility model, the control component 200 and the passive dot matrix display component 100 are connected through a flexible connection (such as a flexible cable or a flexible connector, etc.). The advantages of using a flexible connection are: the flexible connection is sampled from special materials and designs, has good flexibility, and can be bent or twisted within a certain range while maintaining a normal connection; the flexible connection usually has high durability and can withstand stress such as stretching and bending; the flexible connection has good conductivity to ensure unimpeded signal transmission between the control component 200 and the passive dot matrix display component 100.

[0083] According to the organic light emitting diode dot matrix passive driving system proposed in the embodiment of the utility model, the passive dot matrix display component and the control component are powered by the power supply component; the passive dot matrix display component composed of the organic light emitting diode passive dot matrix is ​​used to display the picture; the control component is used to adjust the display picture of the passive dot matrix display component according to the current display demand, and the display frequency of the passive dot matrix display component is adjusted according to the current display frequency. Therefore, through the organic light emitting diode dot matrix passive driving system, the principle of passive driving display image can be demonstrated, helping users to better understand the principle and application of organic optoelectronic devices, and intuitively feel the cutting-edge science and its role in daily life.

[0084] Next, the test box according to the embodiment of the utility model is described with reference to the accompanying drawings.

[0085] Fig.12 It is a block diagram of a test box according to an embodiment of the utility model.

[0086] like Fig.12As shown, the test box 1 includes: an organic light emitting diode dot matrix passive driving system 10, a test box body 20 and an integrated power supply 30, wherein the organic light emitting diode dot matrix passive driving system 10 is arranged in the test box body 20; the integrated power supply 30 is arranged in the test box body 20, and the integrated power supply 30 is used to supply power to the organic light emitting diode dot matrix passive driving system 10.

[0087] Specifically, if Fig.12 As shown, the organic light-emitting diode dot matrix passive driving system 10 and the integrated power supply 30 are both arranged in the test box body 20. In addition, the test box 1 also includes: an inorganic light-emitting diode and a flexible resistor 40; an organic light-emitting diode test piece 50, which includes four light-emitting points; and an independent 128×64 passive dot matrix display screen 60. Through the test box 1, in addition to supplying power to the organic light-emitting diode dot matrix passive driving system 10, the integrated power supply 30 can also supply power to other light-emitting devices in the test box 1. For example, the inorganic light-emitting diode can be illuminated by the integrated power supply 30, in which the flexible resistor is a current-limiting resistor, and the organic light-emitting diode test piece 50 can also be illuminated by the integrated power supply 30. On this basis, the user can explore the electrode lead position of the 128×64 passive dot matrix display screen 60 by himself, light up the passive dot matrix display screen 60, and move the brightness on the passive dot matrix display screen 60 in the horizontal and vertical directions, so as to understand the electrode layout of the passive dot matrix display screen 60. Finally, the OLED dot matrix passive driving system 10 is operated to gain an overall understanding of the OLED from a single light-emitting point to a dot matrix and then to display a complete image, further improving the user's knowledge of the device structure, light-emitting principle and other knowledge of the OLED.

[0088] According to the test box proposed in the embodiment of the utility model, the principle of passive drive display image can be demonstrated through the organic light emitting diode dot matrix passive drive system, which helps users better understand the principles and applications of organic optoelectronic devices and intuitively experience cutting-edge science and its role in daily life.

[0089] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0090] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0091] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. An organic light emitting diode dot matrix passive driving system, characterized in that: include: Passive dot matrix display components and control components, wherein: The passive dot matrix display component is composed of an organic light emitting diode passive dot matrix; The control component is connected to the passive dot matrix display component, and is used to adjust the display picture of the passive dot matrix display component according to the current display demand, and adjust the display frequency of the passive dot matrix display component according to the current display frequency.

2. The organic light emitting diode dot matrix passive driving system according to claim 1, characterized in that: Also includes: A power supply component is connected to the passive dot matrix display component and the control component respectively, and is used to supply power to the passive dot matrix display component and the control component respectively.

3. The organic light emitting diode dot matrix passive driving system according to claim 2, characterized in that: The control component comprises: A filtering and boosting circuit, the filtering and boosting circuit is connected to the power supply component and is used to filter the input voltage of the power supply component and output it as a first target voltage; a filtering and step-down circuit, the filtering and step-down circuit being connected to the power supply component and configured to filter the input voltage of the power supply component and output it as a second target voltage, wherein the second target voltage is lower than the first target voltage; A control circuit is connected to the passive dot matrix display component, and is used to control the pixels on the dot matrix of the passive dot matrix display component to light up row by row according to the current display demand.

4. The organic light emitting diode dot matrix passive driving system according to claim 3, characterized in that: The filtering and boosting circuit comprises: A first resistor, one end of which is connected to a first power supply access node; a first diode, wherein a cathode of the first diode is connected to the other end of the first resistor; a first inductor, wherein one end of the first inductor is connected to the anode of the first diode, and the other end of the first inductor is connected to a second power supply access node; a boost converter, wherein a first end of the boost converter is respectively connected to an anode of the first diode and one end of the first inductor, a second end of the boost converter is grounded, and a fourth end of the boost converter and a sixth end of the boost converter are both connected to the other end of the first inductor; a first capacitor, one end of which is connected to the other end of the first resistor and the cathode of the first diode respectively, and the other end of the first capacitor is grounded; a second capacitor, one end of the second capacitor being connected to the other end of the first resistor and the cathode of the first diode respectively, and the other end of the second capacitor being grounded; a second resistor, one end of which is connected to the other end of the first resistor and the cathode of the first diode respectively; a third resistor, one end of the third resistor being connected to the other end of the second resistor, and the other end of the third resistor being grounded; a third capacitor, one end of the third capacitor being respectively connected to the other end of the first resistor and the cathode of the first diode, and the other end of the third capacitor being respectively connected to a connection node of the second resistor and the third resistor and a third end of the boost converter; a fourth capacitor, one end of the fourth capacitor being connected to the fifth end of the boost converter, and the other end of the fourth capacitor being grounded; A fifth capacitor, one end of which is connected to the other end of the first inductor and the second power supply access node respectively, and the other end of the fifth capacitor is grounded.

5. The organic light emitting diode dot matrix passive driving system according to claim 4, characterized in that: The filtering and voltage-reducing circuit comprises: a sixth capacitor, one end of which is connected to the second power supply access node, and the other end of which is grounded; a seventh capacitor, one end of the seventh capacitor being connected to one end of the sixth capacitor and the second power supply access node respectively, and the other end of the seventh capacitor being connected to the other end of the sixth capacitor; a voltage stabilizer, wherein a first end of the voltage stabilizer is respectively connected to one end of the sixth capacitor, one end of the seventh capacitor and the second power supply access node, a second end of the voltage stabilizer is connected to the other end of the seventh capacitor, and a third end of the voltage stabilizer is connected to the first end of the voltage stabilizer; an eighth capacitor, one end of which is connected to the fourth end of the voltage regulator and the third power supply access node respectively, and the other end of which is grounded; A ninth capacitor, one end of the ninth capacitor is connected to the third power supply access node, and the other end of the ninth capacitor is grounded.

6. The organic light emitting diode dot matrix passive driving system according to claim 1, characterized in that: Also includes: A bracket for supporting the organic light emitting diode dot matrix passive driving system.

7. The organic light emitting diode dot matrix passive driving system according to claim 6, characterized in that: Also includes: A frequency switching component is arranged on the bracket, and the frequency switching component is connected to the control component and is used for collecting the current display frequency.

8. The organic light emitting diode dot matrix passive driving system according to claim 6, characterized in that: Also includes: A screen switching component is arranged on the bracket, and the screen switching component is connected to the control component, and is used for collecting the current display demand.

9. The organic light emitting diode dot matrix passive driving system according to claim 1, characterized in that: The control component is connected to the passive dot matrix display component via a flexible connection.

10. A test box, characterized in that: include: Test chamber body; The organic light emitting diode dot matrix passive driving system according to any one of claims 1 to 9, wherein the organic light emitting diode dot matrix passive driving system is disposed in the test box body; An integrated power supply is arranged in the test box body, and the integrated power supply is used to supply power to the organic light emitting diode dot matrix passive driving system.

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