A multi-circuit controlled low power OLED display device

Abstract

The utility model discloses a kind of low-power OLED display equipment of multi-circuit control, including host computer, display driver, first display panel and second display panel;Wherein, host computer connects display driver, sends image data to display driver;Display driver is connected first display panel and second display panel respectively, and the first image signal and the second image signal generated according to image data are respectively transmitted to first display panel and second display panel display.This utility model uses different signals to emit light control for different regions of OLED screen, carries control program in image processor, realizes fine dimming according to image content, effectively reduces the display power consumption of OLED screen.The utility model realizes content adaptive low-power display, and is widely applied in OLED display technical field.

Description

Technical Field

[0001] This utility model relates to the field of OLED display technology, and in particular to a low-power OLED display device with multi-circuit control. Background Technology

[0002] In traditional display technologies, backlight control is typically performed globally in a uniform manner. Regardless of whether a portion of the screen displays dark content or a black background, the backlight brightness and pixel luminous intensity are adjusted according to the brightest area, resulting in a significant amount of unnecessary power consumption.

[0003] Achieving localized energy saving presents significant technical challenges due to the inability to adjust brightness based on displayed content. For example, even if most of the screen is black, the entire backlight system will maintain maximum brightness as long as even one pixel is displayed at maximum brightness. This inefficient energy consumption mechanism is particularly pronounced in battery-powered mobile devices, severely limiting their battery life. Utility Model Content

[0004] In view of this, the present invention provides a low-power OLED display device with multi-circuit control, including a host, a display driver, a first display panel and a second display panel;

[0005] The host is connected to the display driver and sends image data to the display driver;

[0006] The display driver is connected to the first display panel and the second display panel respectively, and transmits the first image signal and the second image signal generated according to the image data to the first display panel and the second display panel for display respectively.

[0007] Furthermore, the host includes a timing controller; the timing controller performs timing control on the image data sent by the host.

[0008] Furthermore, the display driver includes an image processor, a source driver, a first panel interface, a second panel interface, a first transmit power supply module, and a second transmit power supply module; the image processor is connected to the host and receives image data from the host; the source driver, the first panel interface, the second panel interface, the first transmit power supply module, and the second transmit power supply module are respectively connected to the image processor, receive their respective digital control signals from the image processor, and transmit corresponding first image signals / second image signals to the first display panel or the second display panel.

[0009] Furthermore, the first image signal and the second image signal are generated separately by the image processor.

[0010] Furthermore, the digital control signal received by the source driver is a source control signal, and the first image signal / second image signal transmitted to the first display panel / second display panel are discrete analog voltage signals for adjusting the grayscale of OLED pixels.

[0011] Furthermore, the digital control signal received by the first transmission power supply module / second transmission power supply module is a voltage adjustment signal, and the first image signal / second image signal transmitted to the first display panel / second display panel are discrete analog voltage signals for adjusting pixel brightness.

[0012] Furthermore, the analog voltage signal for adjusting pixel brightness includes an anode signal and a cathode signal, and the pixel brightness is adjusted by adjusting the voltage difference between the anode signal and the cathode signal.

[0013] Furthermore, the digital control signals received by the first panel interface / second panel interface and the first image signal / second image signal sent to the first display panel / second display panel are formatted image data signals.

[0014] Furthermore, the first display panel / second display panel includes a first gate driver / second gate driver and a first emission scan driver / second emission scan driver; the first gate driver / second gate driver is connected to the display line of the OLED screen, and the first emission scan driver / second emission scan driver is connected to the OLED pixel.

[0015] Furthermore, after receiving the first image signal / second image signal, the first display panel / second display panel sends a strobe timing control signal to the display line of the OLED screen through the first gate driver / second gate driver, and sends a light emission timing control signal to the corresponding OLED pixel on the OLED display line through the first emission scan driver / second emission scan driver, so as to display image data.

[0016] The technical solution in one of the above embodiments of this utility model has the following advantages: This utility model provides a low-power OLED display device with multi-circuit control, which uses different signals to control the light emission of different areas of the OLED screen. A control program is integrated into the image processor to achieve fine-tuning based on the image content, effectively reducing the display power consumption of the OLED screen. This utility model achieves content-adaptive low-power display and is widely used in the field of OLED display technology. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of a low-power OLED display device with multi-circuit control according to the present invention.

[0018] Figure 2This is a detailed structural diagram of a low-power OLED display device with multi-circuit control according to the present invention;

[0019] Figure 3 This is a schematic diagram illustrating the effect of adjusting the anode and cathode signals in this utility model;

[0020] Figure 4 This is a schematic diagram illustrating the effect of this invention in reducing the voltage signal output by adjusting the voltage difference between the anode and cathode signals. Detailed Implementation

[0021] Reference Figure 1 The first embodiment of this utility model provides a low-power OLED display device with multi-circuit control, including a host, a display driver, a first display panel and a second display panel; wherein, the host is connected to the display driver and sends image data to the display driver; the display driver is connected to the first display panel and the second display panel respectively, and transmits the first image signal and the second image signal generated according to the image data to the first display panel and the second display panel for display respectively.

[0022] This invention achieves power consumption management based on image content by dividing the OLED display panel into several regions and independently controlling the OLED pixels in different regions.

[0023] A detailed structural diagram of this utility model is shown below. Figure 2 As shown below, the technical effects of this utility model are explained in detail:

[0024] Host Unit: The host unit in this utility model is equipped with a timing controller, which generates and coordinates the timing of image data so that the image data is transmitted to the display panel at the correct time, ensuring that the display device works normally (avoiding abnormalities such as tearing, flickering or delay).

[0025] Display driver: The display driver in this utility model includes an image processor, a source driver, a first panel interface, a second panel interface, a first transmit power supply module, and a second transmit power supply module.

[0026] In this invention, the image processor dynamically controls the display brightness of different areas of the OLED display panel based on the input image data to achieve power saving. Specifically, the image processor is connected to the host computer and receives image data from the host computer; the source driver, the first panel interface, the second panel interface, the first transmitter power supply module, and the second transmitter power supply module are respectively connected to the image processor, receive their respective digital control signals from the image processor, and transmit the corresponding first image signal / second image signal to the first display panel or the second display panel.

[0027] In this invention, the first image signal and the second image signal are generated separately by the image processor to achieve pixel control of different areas of the OLED display panel.

[0028] For the source driver, the digital control signal received by the source driver is the source control signal, and the first image signal / second image signal transmitted to the first display panel / second display panel are discrete analog voltage signals for adjusting the grayscale of OLED pixels. The source driver can independently adjust the grayscale of OLED pixels to achieve low-power driving based on image content. For example, when the image displayed by the right OLED pixel is black, the analog voltage signal output to the right can be reduced to decrease power consumption.

[0029] For the first and second power supply modules, the digital control signal received by the first and second power supply modules is a voltage adjustment signal, and the first and second image signals transmitted to the first and second display panels are discrete analog voltage signals for adjusting pixel brightness. Since OLED pixels are current-driven devices, current flows from the partitioned independent anode power supply (ELVDD-1 / 2) through the OLED organic layer to the partitioned independent cathode power supply (ELVSS-1 / 2), with the effect as follows: Figure 3 , 4 As shown, when the display brightness of an OLED pixel decreases (e.g., when the image brightness is low), the current flowing through the OLED pixel can be reduced, ultimately reducing power consumption.

[0030] In this invention, the signals received by the first display panel / second display panel are also transmitted through the first panel interface / second panel interface. The digital control signals received by the first panel interface / second panel interface and the first image signal / second image signal sent to the first display panel / second display panel are formatted image data signals.

[0031] It should be noted that in this invention, the OLED display panel is divided into a first display panel and a second display panel on the left and right sides; however, this invention is not limited to the first and second display panels. This invention can also be applied to situations where the OLED display panel is divided into more areas for display, achieving a low-power display effect.

[0032] The first display panel / second display panel includes a first gate driver / second gate driver and a first emission scan driver / second emission scan driver; the first gate driver / second gate driver is connected to the display line of the OLED screen, and the first emission scan driver / second emission scan driver is connected to the OLED pixel.

[0033] In this invention, the gate driver first sends a gating timing control signal (GL / GR) to the display line of the OLED screen, turning on the transistors of the corresponding row of pixels and allowing data to be written. For example, when GL(i) is high, the pixel in the i-th row from the left is gating. During pixel activation, the formatted image data signal sent by the display driver is passed to the source driver. The source driver converts the digital image data into analog voltage and writes it to the gating pixel row, changing the grayscale value of each pixel. Finally, the emitter scan driver sends an emission timing control signal (EML / EMR) to the corresponding OLED pixel on the OLED display line to control the emission time of the pixel. For example, when EML(i) is high, the pixel in the i-th row from the left begins to emit light. The emission duration, combined with the image data, determines the actual brightness of the pixel. Image display for that frame is achieved by changing pixels row by row.

[0034] In this invention, the formatted image data signal sent by the source driver provides the brightness information of the pixels, the gating timing control signal sent by the gate driver ensures that this data is written to the correct pixel rows, and the emission timing control signal sent by the emitter scan driver controls the emission timing of the pixels. These three components work collaboratively through the display driver, activating sequentially in timing to achieve complete display functionality. Furthermore, due to independent zone control (independent left and right signals), these signals can be dynamically adjusted for the left and right areas to achieve low-power image display.

[0035] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting.

Claims

1. A multi-circuit controlled low power OLED display device, characterized by, Includes a host, a display driver, a first display panel, and a second display panel; The host is connected to the display driver and sends image data to the display driver; The display driver is connected to the first display panel and the second display panel respectively, and transmits the first image signal and the second image signal generated according to the image data to the first display panel and the second display panel for display respectively.

2. The multi-circuit controlled low power OLED display device according to claim 1, wherein, The host includes a timing controller; the timing controller performs timing control on the image data sent by the host.

3. The multi-circuit controlled low power OLED display device of claim 1, wherein, The display driver includes an image processor, a source driver, a first panel interface, a second panel interface, a first transmit power supply module, and a second transmit power supply module. The image processor is connected to the host and receives image data from the host. The source driver, the first panel interface, the second panel interface, the first transmit power supply module, and the second transmit power supply module are respectively connected to the image processor, receive their respective digital control signals from the image processor, and transmit corresponding first image signals / second image signals to the first display panel or the second display panel.

4. The multi-circuit controlled low power OLED display device of claim 3, wherein, The first image signal and the second image signal are generated separately by the image processor.

5. The multi-circuit controlled low power OLED display device of claim 3, wherein, The digital control signal received by the source driver is the source control signal, and the first image signal / second image signal transmitted to the first display panel / second display panel are discrete analog voltage signals for adjusting the grayscale of OLED pixels.

6. The multi-circuit controlled low power OLED display device of claim 3, wherein, The digital control signal received by the first power supply module / second power supply module is a voltage adjustment signal, and the first image signal / second image signal transmitted to the first display panel / second display panel are discrete analog voltage signals for adjusting pixel brightness.

7. The multi-circuit controlled low power OLED display device of claim 6, wherein, The analog voltage signal used to adjust pixel brightness includes an anode signal and a cathode signal. The pixel brightness is adjusted by adjusting the voltage difference between the anode signal and the cathode signal.

8. The multi-circuit controlled low power OLED display device of claim 3, wherein, The digital control signals received by the first panel interface / second panel interface and the first image signal / second image signal sent to the first display panel / second display panel are formatted image data signals.

9. A low-power OLED display device with multi-circuit control according to claim 1, characterized in that, The first display panel / second display panel includes a first gate driver / second gate driver and a first emission scan driver / second emission scan driver; the first gate driver / second gate driver is connected to the display line of the OLED screen, and the first emission scan driver / second emission scan driver is connected to the OLED pixel.

10. A low-power OLED display device with multi-circuit control according to claim 9, characterized in that, After receiving the first image signal / second image signal, the first display panel / second display panel sends a strobe timing control signal to the display line of the OLED screen through the first gate driver / second gate driver, and sends a light emission timing control signal to the corresponding OLED pixel on the OLED display line through the first emission scan driver / second emission scan driver to display image data.

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