OLED display with built-in RGB color temperature adjusting module

Abstract

The utility model discloses an OLED display with a built-in RGB color temperature adjusting module, and belongs to the technical field of displays. The RGB color temperature adjusting module comprises a color temperature adjusting controller and an RGB sensing module, and the RGB sensing module further comprises a color light sensor, an analog-to-digital converter, a control unit, an oscillator, a reference voltage providing circuit, an infrared transmitter, an infrared receiver and an infrared transmitter driving circuit. Meanwhile, external light is guided into the built-in RGB color temperature adjusting module through the bendable light guide strip. According to the utility model, automatic RGB color temperature adjustment of the built-in sensor is realized, the product integration level is improved, wire harnesses are reduced, and the sensor is prevented from being damaged due to long-term exposure to the outside.

Description

Technical Field

[0001] The utility model belongs to the technical field of display, and specifically relates to an OLED display with a built-in RGB color temperature adjustment module. Background Art

[0002] Current VR (Virtual Reality) head-mounted devices are immersive virtual reality. Because their functions are less affected by external ambient light, most of them do not have the ability to automatically adjust the brightness range and color temperature of the internal screen, and thus do not have the eye protection function in this field. With the latest technological developments, AR (Augmented Reality) / MR (Mixed Reality) and other head-mounted displays require a more realistic sense of presence, requiring the real scene and virtual scene to be naturally combined and interact with each other in a realistic way. In particular, they need to be able to automatically adjust the display color temperature and brightness according to the ambient light when the display is in the eye.

[0003] The prior art (CN219740660U) discloses a light color sensing and color temperature adjustable LED lamp, wherein the patent states that "an embedded groove is provided on the front outer side of the lamp holder, a light sensor is embedded in the embedded groove, a lens is fixed on the outer side of the light sensor, and a wire hole is provided on the embedded groove, which communicates with the inner side of the lamp holder; the utility model has the function of color temperature adjustment and can effectively dissipate heat". It can be seen from the above materials that for color temperature adjustment, both lamps and VR glasses are extremely dependent on the use of light sensors, and the location of the light sensor is particularly important. However, the light sensors in the prior art are often arranged on the outer surface of the device.

[0004] For example, current VR / AR / MR head-mounted display devices adjust screen displays by adding additional P / LSensor or RGB Sensor sensors to the display devices. The additional sensors are all external, but this method increases the number of wiring harnesses and reduces the degree of integration. In addition, external sensors are easily affected by external factors, which may cause sensor failure or even damage. Utility Model Content

[0005] The utility model aims to overcome the shortcomings of the prior art and proposes an OLED display with a built-in RGB color temperature adjustment module, so as to guide external light into the built-in RGB color temperature adjustment module through a flexible light guide strip, thereby realizing the purpose of automatically adjusting the RGB color temperature of the built-in sensor, thereby improving product integration, reducing wiring harnesses, and preventing damage to the sensor caused by long-term exposure to the outside world.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: an OLED display with a built-in RGB color temperature adjustment module, the RGB color temperature adjustment module includes a color temperature adjustment controller and an RGB perception module, the RGB perception module includes a color light sensor, an analog-to-digital converter, a control unit, an oscillator, a reference voltage providing circuit, an infrared transmitter, an infrared receiver, and an infrared transmitter driving circuit, wherein: the output ends of the color light sensor and the infrared receiver are connected to the analog signal acquisition end of the analog-to-digital converter; the oscillator and the reference voltage providing circuit are respectively connected to the analog-to-digital converter; the control unit is respectively connected to the infrared transmitter driving circuit and the color temperature adjustment controller; the infrared transmitter driving circuit is connected to the infrared transmitter.

[0007] Furthermore, the control unit includes an I2C interface, and the I2C interface is connected to the color temperature adjustment controller.

[0008] Furthermore, the control unit includes an interruption system, and the interruption system is connected to the color temperature adjustment controller.

[0009] Furthermore, the color light sensor includes a red light sensor, a green light sensor, a blue light sensor, and an ambient light sensor, and the output ends of the red light sensor, the green light sensor, the blue light sensor, and the ambient light sensor are respectively connected to the analog signal acquisition end of the analog-to-digital converter.

[0010] Furthermore, the infrared emitter is an infrared LED, the anode of the infrared LED is used to connect to a power source, and the cathode of the infrared LED is connected to the infrared emitter drive circuit.

[0011] Furthermore, in order to improve the integration, the utility model packages the components of the RGB sensing module, and the RGB sensing module includes a power pin VDD, a ground pin GND, an I2C clock pin SCL, an I2C data pin SDA, an interrupt pin / INT, an infrared transmitter anode pin LEDA, an infrared transmitter cathode pin LDR, and a normally closed pin NC, wherein the I2C clock pin SCL and the I2C data pin SDA are both led out from the I2C interface; the interrupt pin / INT is led out from the interrupt system; the infrared transmitter drive circuit is connected to the infrared transmitter cathode and the lead-out terminal serves as the infrared transmitter cathode pin LDR.

[0012] Furthermore, the control unit is a TCON logic board.

[0013] Furthermore, the OLED display includes a light guide bar, the light guide bar is bent, and one end of the light guide bar is arranged at the RGB sensing module.

[0014] The technical effects of the present invention are as follows: (1) the sensor exposed on the surface of the display or VR / AR glasses in the prior art is integrated inside the display to improve the integration level; (2) an RGB sensing module with a control unit is provided to assist in controlling the collection of analog signals, reduce the data processing and control tasks of the color temperature adjustment controller, and improve the data processing efficiency, thereby ensuring timely and accurate color temperature adjustment; (3) a bendable light guide strip is provided to introduce external light into the built-in RGB sensing module, which can reduce external interference, and the setting position of the light guide strip can be flexibly selected; (4) the present invention is highly integrated, saves wiring harnesses, reduces costs, and realizes automatic color temperature adjustment of the built-in sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of the RGB sensing module of an embodiment of the utility model;

[0016] Figure 2 The figure is a schematic diagram of the structure of the RGB color temperature adjustment module according to an embodiment of the present utility model. DETAILED DESCRIPTION

[0017] The following is a further detailed description of the specific implementation of the utility model through the description of the embodiments with reference to the accompanying drawings, with the purpose of helping those skilled in the art to have a more complete, accurate and in-depth understanding of the utility model concept and technical solution of the utility model and to facilitate its implementation. In order to make the technical solution of the utility model clearer, the utility model is explained through the following embodiments:

[0018] An OLED display with a built-in RGB color temperature adjustment module, wherein the RGB color temperature adjustment module includes a color temperature adjustment controller and an RGB sensing module, such as Figure 1 As shown, the RGB sensing module includes a color light sensor, an analog-to-digital converter (ADC), a control unit, an oscillator (OSC), a reference voltage providing circuit (REFGEN), an infrared transmitter, an infrared receiver, and an infrared transmitter driving circuit (LED Driver), wherein: the output ends of the color light sensor and the infrared receiver are connected to the analog signal acquisition end of the analog-to-digital converter; the oscillator and the reference voltage providing circuit are respectively connected to the analog-to-digital converter; the control unit is respectively connected to the infrared transmitter driving circuit and the color temperature adjustment controller; the infrared transmitter driving circuit is connected to the infrared transmitter.

[0019] In this embodiment, the control unit of the RGB sensing module is a TCON logic board, which has a certain data processing capability and can process the digital signal converted by the analog-to-digital converter ADC and send it to the color temperature adjustment controller. In the utility model, by adding a control unit with data processing capability to the RGB sensing module, it can assist in controlling the collection of analog signals, reduce the data processing and control tasks of the color temperature adjustment controller, and improve the data processing efficiency, thereby ensuring the timely and accurate automatic adjustment of color temperature.

[0020] In this embodiment, the control unit of the RGB sensing module includes an I2C interface (I2C Interface), and the I2C interface is connected to the color temperature adjustment controller. The I2C interface is a data interface commonly used in the prior art. In this embodiment, the I2C interface can realize faster and more accurate data transmission between the color temperature adjustment controller; at the same time, the I2C interface has a simple structure and low power consumption, which can realize low power consumption design, save circuit board layout space, save wiring harnesses, and reduce costs.

[0021] In this embodiment, the control unit further includes an interrupt system, which is connected to the color temperature adjustment controller. The interrupt system can send an interrupt request signal to the color temperature adjustment controller when the RGB sensing module is running, thereby ensuring that the RGB color data and infrared data collected by the RGB sensing module can be sent to the color temperature adjustment controller in a timely manner, thereby ensuring that the color temperature adjustment controller can adjust the color temperature in a timely and rapid manner.

[0022] Specifically, the color light sensor of this embodiment includes a red light sensor (R), a green light sensor (G), a blue light sensor (B), and an ambient light sensor (C), and the output ends of the red light sensor, the green light sensor, the blue light sensor, and the ambient light sensor are respectively connected to the analog signal acquisition end of the analog-to-digital converter. In this embodiment, the red light sensor, the green light sensor, the blue light sensor, and the ambient light sensor can all use photodiodes to collect color light. In order to distinguish between R, G, and B, it is only necessary to add a polarizing plate of the corresponding color when the corresponding photodiode collects light. Among them, the photodiode responsible for collecting ambient light does not need to add a polarizing plate.

[0023] Specifically, the infrared emitter of this embodiment is an infrared LED, the anode of the infrared LED is used to connect to the power supply, and the cathode of the infrared LED is connected to the infrared emitter drive circuit. At this time, the corresponding infrared emitter drive circuit is an infrared LED drive circuit. The infrared LED is small in size, low in power consumption, and has good directivity, which can effectively save circuit board layout space.

[0024] Furthermore, in order to improve the integration, the utility model packages the components of the RGB sensing module. The packaged RGB sensing module includes a power pin VDD, a ground pin GND, an I2C clock pin SCL, an I2C data pin SDA, an interrupt pin / INT, an infrared transmitter anode pin LEDA, an infrared transmitter cathode pin LDR, and a normally closed pin NC, wherein the I2C clock pin SCL and the I2C data pin SDA are both led out from the I2C interface; the interrupt pin / INT is led out from the interrupt system; the infrared transmitter drive circuit is connected to the infrared transmitter cathode and the lead-out terminal is used as the infrared transmitter cathode pin LDR. Table 1 shows the pin description of the packaged RGB sensing module.

[0025]

[0026]

[0027] Table 1

[0028] Specifically, in order to ensure that the built-in RGB sensing module can receive external light, the OLED display of the utility model is provided with a light guide bar, which is bent, one end of which is arranged at the RGB sensing module, and the other end is exposed to the outside to receive external light. The specific setting position of the light guide bar can be flexibly selected, as long as the external light can be introduced into the RGB sensing module. At the same time, the design of the light guide bar can reduce external interference to a certain extent, and only the required external light is introduced.

[0029] like Figure 2 As shown in FIG. 1 , it is a circuit diagram of the RGB color temperature adjustment module of the embodiment of the utility model. The RGB color temperature adjustment module is completely built into the interior of the OLED display, has the characteristics of high integration, saves wiring harnesses, and reduces costs. The RGB color temperature adjustment module mainly includes a color temperature adjustment controller uC (uC: short for microcontroller) and an RGB sensing module, wherein:

[0030] The I2C clock pin SCL of the RGB sensing module is connected to the data end of the controller uC, and the lead-out terminal is connected to the VBUS power supply (1.2-3.6V) through a 2.2K resistor in series; the I2C data pin SDA of the RGB sensing module is connected to the data end of the controller uC, and the lead-out terminal is connected to the VBUS power supply (1.2-3.6V) through a 2.2K resistor in series; the interrupt pin / INT of the RGB sensing module is connected to the data end of the controller uC, and the lead-out terminal is connected to the VBUS power supply (1.2-3.6V) through a 10K resistor in series; in addition, the power pin of the controller uC is also connected to the VBUS power supply (1.2-3.6V).

[0031] The VLEDA power supply (3.0-3.6V) is connected to the anode pin LEDA of the infrared transmitter of the RGB sensing module. At the same time, the VLEDA power supply (3.0-3.6V) is connected in series with a capacitor (1-4.7uf) and then connected to the ground pins of the RGB sensing module and the controller uC respectively.

[0032] The VDD power supply (1.7-1.98V) is connected to the power pin of the RGB sensing module through a resistor R in series. At the same time, a terminal is led out between the power pin of the RGB sensing module and the resistor R and then grounded through a capacitor (1-4.7uf).

[0033] In this embodiment, the data end of the controller uC is connected to the I2C interface and the interrupt system of the RGB perception module to achieve data exchange with the RGB perception module. Specifically, the controller uC sends a control command to the I2C interface of the RGB perception module. After receiving the control command, the RGB perception module collects RGB color information and infrared information, and outputs the collected data to the controller uC through the I2C interface. The controller uC adjusts the Gamma data inside the OLED display screen according to the data to achieve automatic color temperature adjustment.

[0034] The working principle of the RGB sensing module in this embodiment is as follows:

[0035] After the TCON logic board receives the control command from the controller uC through the I2C interface, it sends a control signal to the LED drive circuit (the infrared transmitter in this embodiment is an infrared LED, so the corresponding infrared transmitter drive circuit is an LED drive circuit. The infrared transmitter drive circuit is an existing common technology and is not described in detail in this utility model). After receiving the control signal, the LED drive circuit drives the infrared LED to emit infrared light.

[0036] At the same time, the TCON logic board sends a control signal to the analog-to-digital converter ADC, after which the analog-to-digital converter ADC starts working, the oscillator provides it with a clock signal, and the reference voltage providing circuit provides it with a reference voltage (the reference voltage providing circuit is an existing common technology, and the utility model will not go into details here), and the analog-to-digital converter ADC respectively collects analog signals from the red light sensor, the green light sensor, the blue light sensor, and the ambient light sensor, as well as the analog signal generated after the infrared receiver receives the returned infrared light. All of the above analog signals are converted into digital signals by the analog-to-digital converter ADC and then output to the controller uC through the I2C interface of the TCON logic board.

[0037] Among them, the interrupt system of the TCON logic board can send an interrupt request signal to the controller uC when the RGB sensing module is running, thereby ensuring that the RGB color data and infrared data can be sent to the controller uC in a timely manner, thereby ensuring that the controller uC can adjust the color temperature in a timely and rapid manner.

[0038] The above is an exemplary description of the utility model in conjunction with the accompanying drawings. Obviously, the specific implementation of the utility model is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the utility model; or the above concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. An OLED display with a built-in RGB color temperature adjustment module, Features: The RGB color temperature adjustment module includes a color temperature adjustment controller and an RGB perception module, and the RGB perception module includes a color light sensor, an analog-to-digital converter, a control unit, an oscillator, a reference voltage providing circuit, an infrared transmitter, an infrared receiver, and an infrared transmitter driving circuit, wherein: the output ends of the color light sensor and the infrared receiver are connected to the analog signal acquisition end of the analog-to-digital converter; the oscillator and the reference voltage providing circuit are respectively connected to the analog-to-digital converter; the control unit is respectively connected to the analog-to-digital converter, the infrared transmitter driving circuit, and the color temperature adjustment controller; the infrared transmitter driving circuit is connected to the infrared transmitter.

2. The OLED display with a built-in RGB color temperature adjustment module according to claim 1, Features: The control unit includes an I2C interface, and the I2C interface is connected to the color temperature adjustment controller.

3. The OLED display with a built-in RGB color temperature adjustment module according to claim 2, Features: The control unit comprises an interruption system, and the interruption system is connected to the color temperature adjustment controller.

4. The OLED display with a built-in RGB color temperature adjustment module according to claim 1, Features: The color light sensor comprises a red light sensor, a green light sensor, a blue light sensor and an ambient light sensor, and the output ends of the red light sensor, the green light sensor, the blue light sensor and the ambient light sensor are respectively connected to the analog signal acquisition end of the analog-to-digital converter.

5. The OLED display with a built-in RGB color temperature adjustment module according to claim 1, Features: The infrared emitter is an infrared LED, the anode of the infrared LED is used to connect to a power source, and the cathode of the infrared LED is connected to the infrared emitter drive circuit.

6. The OLED display with a built-in RGB color temperature adjustment module according to claim 3, Features: The RGB sensing module includes a power pin VDD, a ground pin GND, an I2C clock pin SCL, an I2C data pin SDA, an interrupt pin / INT, an infrared transmitter anode pin LEDA, an infrared transmitter cathode pin LDR, and a normally closed pin NC, wherein the I2C clock pin SCL and the I2C data pin SDA are both led out from the I2C interface; the interrupt pin / INT is led out from the interrupt system; the infrared transmitter drive circuit is connected to the infrared transmitter cathode and the lead-out terminal serves as the infrared transmitter cathode pin LDR.

7. An OLED display with a built-in RGB color temperature adjustment module according to any one of claims 1 to 5, Features: The control unit is a TCON logic board.

8. The OLED display with a built-in RGB color temperature adjustment module according to claim 1, Features: The OLED display comprises a light guide bar, the light guide bar is bent, and one end of the light guide bar is arranged at the RGB sensing module.

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