CN217086110U

CN217086110U - Integrated driven OLED module

Info

Publication number: CN217086110U
Application number: CN202220476347.3U
Authority: CN
Inventors: 臧文健; 孙徐佳; 任康成
Original assignee: Changzhou Xingyu Automotive Lighting Systems Co Ltd
Current assignee: Changzhou Xingyu Automotive Lighting Systems Co Ltd
Priority date: 2022-03-07
Filing date: 2022-03-07
Publication date: 2022-07-29
Anticipated expiration: 2032-03-07

Abstract

The utility model discloses an integrated drive OLED module, which comprises an OLED screen body, a FPC soft board and a drive module, wherein the FPC soft board is electrically connected with the OLED screen body, and the drive module is integrated on the FPC soft board; the driving module comprises a plurality of driving chips, the output end of each driving chip comprises a plurality of output pins, and each output pin is connected with one input pin of the OLED screen body. The utility model provides an integrated driven OLED module integrates driver chip on FPC soft board to reduce the signal line quantity that OLED module and control circuit connect, do benefit to the wiring, reduce cost improves the stability of circuit.

Description

Integrated driven OLED module

Technical Field

The utility model relates to an integrated driven OLED module.

Background

At present, the principle of display of the OLED is different from that of the mainstream LCD screen at present, which brings a plurality of inherent advantages for the OLED. The OLED display technology has the advantages of self-luminescence, wide viewing angle, high contrast, low power consumption, high reaction rate, full color, simple manufacturing process and the like. Above all, flexible display can be realized, more application possibilities are brought, and the method is more suitable for future industry trends.

The design of the multi-luminous-area OLED fully considers the unique advantages of the OLED, such as uniform surface luminescence, clear boundary, light and thin shape, and realizes different pattern shapes by splicing different luminous areas so as to improve the self-defining degree and animation effect of automobile light patterns. This design flexibility allows the car to have a unique style of car light, while the animated graphics will also provide a safe added value to the customer. However, in order to realize the pattern display of the OLED, it is necessary to drive and control each pixel, which requires a large number of signal lines, increases the wiring difficulty, increases the connector occupation space, and also affects the noise immunity of the driving board.

Disclosure of Invention

The utility model aims to solve the technical problem that, overcome prior art not enough, provide an integrated driven OLED module, integrated driver chip on the FPC soft board to reduce the signal line quantity that OLED module and control circuit connect, do benefit to the wiring, reduce cost and improve the stability of circuit.

In order to solve the technical problem, the technical scheme of the utility model is that:

an integrated drive OLED module comprises an OLED screen body, an FPC (flexible printed circuit) soft board and a drive module, wherein the FPC soft board is electrically connected with the OLED screen body, and the drive module is integrated on the FPC soft board;

the driving module comprises a plurality of driving chips, the output end of each driving chip comprises a plurality of output pins, and each output pin is connected with one input pin of the OLED screen body.

Furthermore, the drive module further comprises an input filter circuit, wherein the input end of the input filter circuit is connected with the CAN signal, and the output end of the input filter circuit is connected with the input end of the drive chip.

Further, the driving chip comprises a chip module and a common mode suppressor, an input end of the common mode suppressor is connected with an output end of the input filter circuit, an output end of the common mode suppressor is connected with an input end of the driving chip, and an output end of the driving chip is electrically connected with a pin of the OLED screen body.

Further, the input filter circuit comprises a resistor R _ CAN1, a resistor R _ CAN2, a capacitor C _ CAN1, a regulator tube D2, a capacitor C1, a resistor R1 and a diode D1, one end of the resistor R _ CAN1 is connected with an input signal CAN _ H, the other end of the resistor R _ CAN1 is connected with one end of the capacitor C _ CAN1, one end of the resistor R _ CAN2 is connected with an input signal CAN _ L, the other end of the resistor R _ CAN2 is connected with one end of the capacitor C _ CAN1, the other end of the capacitor C _ CAN1 is grounded, the cathode of the regulator tube D2 is connected with VCC, the anode of the regulator tube D2 is grounded, one end of the capacitor C1 is connected with the cathode of the regulator tube D2, the other end of the capacitor C1 is connected with the anode of the regulator tube D2, one end of the resistor R1 is connected with the cathode of the regulator tube D6, and the anode of the regulator tube 1 is connected with the regulator tube D38742, the anode of the diode D1 is connected with the cathode of the voltage regulator tube D2, and the cathode of the diode D1 is connected with the power supply VS.

Further, the common mode suppressor comprises a common mode inductor L100, pin 1 of the common mode inductor L100 is connected to an input signal CAN _ L, pin 2 of the common mode inductor L100 is connected to an input signal CAN _ H, pin 3 of the common mode inductor L100 is connected to an input terminal of a driver chip, and pin 4 of the common mode inductor L100 is connected to an input terminal of the driver chip.

Further, a pin 29 of the driving chip U100 is connected to a pin 3 of the common mode inductor L100, a pin 30 of the driving chip U100 is connected to a pin 4 of the common mode inductor L100, and a plurality of output pins of the driving chip U100 are respectively connected to input pins of the OLED screen body.

According to the technical scheme, the utility model discloses an in the FPC soft board that links to each other with the OLED screen body, according to the integrated driver chip of required quantity of actual need driven OLED pixel quantity, FPC soft board connection control board one end is the required communication signal line of driver chip, realizes accomplishing the control to the huge every OLED pixel of quantity by the less communication signal line of quantity to realize the pattern of pixel level accuracy control. Compared with the traditional OLED screen body, the connecting terminal connected with the driving board occupies less space, and great convenience is brought to the wiring and layout space of the signal line to the driving board.

Drawings

Fig. 1 is a schematic block diagram of an integrated driven OLED module of the present invention;

fig. 2 is a system block diagram of an OLED module driven by an integrated application according to the present invention;

fig. 3 is a schematic circuit diagram of the input filter circuit of the present invention;

fig. 4 is a schematic circuit diagram of the common mode suppressor of the present invention;

fig. 5 is a schematic circuit diagram of the chip module according to the present invention.

Detailed Description

In order that the present invention may be more readily and clearly understood, the following detailed description of the present invention is provided in connection with the accompanying drawings.

As shown in fig. 1, the present embodiment provides an integrated driving OLED module, which includes an OLED screen body, a FPC flexible printed circuit board and a driving module, wherein the FPC flexible printed circuit board is electrically connected to the OLED screen body, and the driving module is integrated on the FPC flexible printed circuit board. The drive module comprises an input filter circuit and a plurality of drive chips, the output end of each drive chip comprises a plurality of output pins, each output pin is connected with one input pin of the OLED screen body, the drive chips are integrated on the FPC soft board which is integrally bound with the OLED screen body, and the models and the quantity of the required drive chips can be selected according to the actual pixel quantity of the OLED screen body. The input end of the input filter circuit is connected with the CAN signal, and the output end of the input filter circuit is connected with the input end of the driving chip.

Each pixel of the OLED screen body can be respectively controlled by the multi-path output of the driving chip, and different pattern shapes are realized by splicing different light emitting areas, so that the self-definition degree and the animation effect of the automobile light patterns are improved.

The drive chip integrated on the FPC is controlled by communication, including but not limited to CAN, CAN FD, LIN, UART, SPI and other communication modes. As shown in FIG. 2, the OLED module can be programmed by the MCU on the control board to achieve precise control of each pixel of the OLED.

Specifically, the driving chip comprises a chip module and a common mode suppressor, an input end of the common mode suppressor is connected with an output end of the input filter circuit, an output end of the common mode suppressor is connected with an input end of the driving chip, and an output end of the driving chip is electrically connected with a pin of the OLED screen body.

As shown in fig. 3, the input filter circuit includes a resistor R _ can1, a resistor R _ can2, and a capacitor C _ can1, one end of a resistor R _ CAN1 is connected with an input signal CAN _ H, the other end of the resistor R _ CAN1 is connected with one end of a capacitor C _ CAN1, one end of a resistor R _ CAN2 is connected with an input signal CAN _ L, the other end of the resistor R _ CAN2 is connected with one end of a capacitor C _ CAN1, the other end of the capacitor C _ CAN1 is grounded, the cathode of a resistor R2 is connected with a power supply VCC, the anode of a voltage regulator D2 is grounded, one end of a capacitor C1 is connected with the cathode of a voltage regulator D2, the other end of a capacitor C1 is connected with the anode of a voltage regulator D2, one end of a resistor R1 is connected with the cathode of a voltage regulator D2, the other end of a resistor R1 is connected with the anode of a voltage regulator D2, the anode of a diode D1 is connected with the cathode of the voltage regulator D2, and the cathode of a power supply VS 1 is connected with the cathode of a voltage regulator D1. The number of the signal lines connected with the control board is only the number of communication signal lines required by the driving chip and power lines, for example, CAN is only required to be CAN _ H, CAN _ L, a power supply anode VCC, a power supply cathode GND and a synchronization line connected with each OLED integrated module, and the number is obviously smaller than the number of the signal lines directly connected with the traditional OLED screen body for driving.

As shown in fig. 4, the common mode suppressor includes a common mode inductor L100, a pin 1 of the common mode inductor L100 is connected to an input signal CAN _ L, a pin 2 of the common mode inductor L100 is connected to an input signal CAN _ H, a pin 3 of the common mode inductor L100 is connected to an input terminal of a driver chip, and a pin 4 of the common mode inductor L100 is connected to an input terminal of the driver chip.

Specifically, as shown in fig. 5, pin 29 of the driving chip U100 is connected to pin 3 of the common mode inductor L100, pin 30 of the driving chip U100 is connected to pin 4 of the common mode inductor L100, and pins 1 to 22 and pins 39 to 48 of the driving chip U100 are respectively connected to input pins of the OLED panel.

In this embodiment, the OLED module with integrated driving is described by taking an L99LDLH32 chip as an example. The L99LDLH32 chip has 32 high-side output channels, and for each channel, the current magnitude and the channel switching time are controlled by communication signals, namely, the real-time control is realized by software at the control board end. Assuming that an OLED screen with 64 pixels is used as a load, 2L 99LDLH32 chips are used for driving control, and each channel of the L99LDLH32 chip controls one OLED pixel. The L99LDLH32 supports the CAN FD communication mode, an MCU module circuit supporting the CAN FD communication is arranged on a control circuit board connected with an integrated drive OLED module, and CAN send an instruction to the L99LDLH32 through the CAN FD communication to control the on-off and current of a single channel, so that the lighting sequence and the brightness of each pixel OLED are controlled. In the above application, if the traditional OLED screen body is adopted, 65 wire harnesses are required to be connected with each screen body and the driving board, and if the scheme of the invention is adopted, the OLED module and the control board which are integrally driven only need 4 wire harnesses of a power supply positive electrode, a power supply negative electrode and CAN _ H, CAH _ L at least. Therefore, the invention has obvious application advantages.

The overall system block diagram shown in fig. 2 shows that the integrated drive OLED module and the control circuit board are connected by connectors. Here, the breakthrough connector only needs 4 pins, namely 4 harnesses of the power supply positive pole, the power supply negative pole and the CAN _ H, CAH _ L. The anode and cathode of the power supply are connected to the power management module in the control circuit board from the L99LDLH32 chip, and the CAN _ H, CAH _ L is connected to the MCU control module in the control circuit board from the L99LDLH32 chip. The MCU control module on the control circuit board supports the same communication mode as the L99LDLH32 chip, the CAN FD communication is taken as the L99LDLH32 chip as an example, and the user CAN realize the partition control of the OLED with 32 pixels by programming the MCU control module.

The above-mentioned embodiments further explain in detail the technical problems, technical solutions and advantages solved by the present invention, and it should be understood that the above only is a specific embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. An integrated driven OLED module, characterized in that: the OLED screen comprises an OLED screen body, an FPC soft board and a driving module, wherein the FPC soft board is electrically connected with the OLED screen body, and the driving module is integrated on the FPC soft board;

2. The integrally driven OLED module of claim 1, wherein: the driving module further comprises an input filter circuit, the input end of the input filter circuit is connected with the CAN signal, and the output end of the input filter circuit is connected with the input end of the driving chip.

3. The integrally driven OLED module of claim 2, wherein: the drive chip comprises a chip module and a common mode suppressor, wherein the input end of the common mode suppressor is connected with the output end of the input filter circuit, the output end of the common mode suppressor is connected with the input end of the drive chip, and the output end of the drive chip is electrically connected with a pin of the OLED screen body.

4. The integrally driven OLED module as recited in claim 3, wherein: the input filter circuit comprises a resistor R _ CAN1, a resistor R _ CAN2, a capacitor C _ CAN1, a regulator tube D2, a capacitor C1, a resistor R1 and a diode D1, one end of the resistor R _ CAN1 is connected with an input signal CAN _ H, the other end of the resistor R _ CAN1 is connected with one end of a capacitor C _ CAN1, one end of the resistor R _ CAN2 is connected with an input signal CAN _ L, the other end of the resistor R _ CAN2 is connected with one end of a capacitor C _ CAN1, the other end of the capacitor C _ CAN1 is grounded, the cathode of the regulator tube D2 is connected with a power supply VCC, the anode of the regulator tube D2 is grounded, one end of the capacitor C1 is connected with the cathode of the regulator tube D2, the other end of the capacitor C1 is connected with the anode of the regulator tube D2, one end of the resistor R1 is connected with the cathode of the regulator tube D2, the anode of the resistor R2 is connected with the anode of the regulator tube D2, and the cathode of the regulator tube D2 is connected with the regulator tube D2, the cathode of the diode D1 is connected to the power source VS.

5. The integrally driven OLED module as recited in claim 3, wherein: the common mode suppressor comprises a common mode inductor L100, wherein a pin 1 of the common mode inductor L100 is connected with an input signal CAN _ L, a pin 2 of the common mode inductor L100 is connected with an input signal CAN _ H, a pin 3 of the common mode inductor L100 is connected with an input end of a driving chip, and a pin 4 of the common mode inductor L100 is connected with an input end of the driving chip.

6. The integrally driven OLED module as recited in claim 5, wherein: the pin 29 of the driving chip U100 is connected with the pin 3 of the common-mode inductor L100, the pin 30 of the driving chip U100 is connected with the pin 4 of the common-mode inductor L100, and a plurality of output pins of the driving chip U100 are respectively connected with input pins of the OLED screen body.