Display module, device, method and computer program product

Abstract

The invention relates to the technical field of near-to-eye display, and discloses a display module, device and method and a computer program product, the display module comprises a display panel comprising pixel units used for forming a display area and arranged in an array, and pixel driving circuits arranged corresponding to the pixel units; and the control unit is configured to receive a frame image signal of the current frame image, generate a data signal according to the frame image signal, and control the pixel driving circuit according to the central vision area of the user, so that the pixel unit displays the current frame image based on the data signal. Compared with an existing mode of sequentially lightening line by line for displaying, the method and the device have the advantages that the previous frame content and the next frame content can be prevented from being overlapped, the central vision area on the screen is enabled to emit light at the same time, the display quality is improved, and the user experience is improved.

Description

Technical Field

[0001] The present application relates to the field of near-eye display technology, and in particular to a display module, device, method and computer program product. Background Art

[0002] At present, wearable devices such as head-mounted virtual reality (VR), mixed reality (MR) and augmented reality (AR) can provide users with an immersive experience through near-eye display technology, that is, near-eye display is achieved through internal silicon-based organic light emitting diodes (OLED).

[0003] When driving silicon-based OLED, it is generally implemented based on pulse modulation light emission, that is, when each row of pixels in the display area displays a frame of image, after writing data to the buffer in turn according to the row-by-row driving method, it is immediately controlled to light up and continue to emit light for a certain period of time (for example, the continuous light emission time can be controlled to be 20% of the length of a frame). This method will cause the content of the previous frame to overlap with the content of the next frame, that is, when the content of the next frame of data is displayed, the last few rows of pixels at the bottom are still displaying the content of the previous frame, but the pixels of the first few rows at the top have begun to write and display the content of the next frame, which is called the "ghosting" phenomenon, that is, the dislocation of the display. At the same time, due to the persistence effect of the human eye, that is, when the human eye observes a rapidly changing image, the visual system's perception of the image will not disappear immediately, but will remain on the retina for a period of time. Then, when the user wears the wearable device and moves quickly (such as shaking his head, etc.), the display screen will have a delay in the light display between different rows, and there will be a display dislocation or "perception dislocation" problem, resulting in visual distortion errors. This problem is also called the jelly effect, resulting in poor display quality and affecting the user experience. Summary of the invention

[0004] The main purpose of the present application is to provide a display module, device, method and computer program product, which aims to solve the technical problem that when the existing silicon-based OLED is driven by a pulse modulation light-emitting method, the previous frame content overlaps with the next frame content due to the sequential lighting of each row, resulting in poor display quality and affecting the user experience.

[0005] To achieve the above object, the present application provides a display module, the display module comprising:

[0006] A display panel, comprising pixel units arranged in an array for constituting a display area, and a pixel driving circuit arranged corresponding to the pixel units;

[0007] a control unit configured to receive a frame image signal of a current frame image, generate a data signal according to the frame image signal, and control the pixel driving circuit according to a central vision area of ​​a user so that the pixel unit displays the current frame image based on the data signal;

[0008] Among them, when the pixel units display the current frame image based on the data signal, the light-emitting time periods of the pixel units in the first display area including the central vision area are the same, and the light-emitting time periods of the remaining pixel units are different from the light-emitting time periods of the pixel units in the first display area; and the start light-emitting time of the pixel unit that emits light earliest when the current frame image is displayed is later than the end light-emitting time of the pixel unit that emits light latest when the previous frame image is displayed.

[0009] In one embodiment, the control unit comprises:

[0010] A display driving module, configured to generate a data signal, a first control signal and a second control signal according to the frame image signal, and generate a third control signal according to the received central vision area information, wherein the central vision area information is generated based on the central vision area of ​​the user;

[0011] a data driving circuit, configured to send the data signal to a data line of each pixel unit according to the first control signal;

[0012] a write control driving circuit, configured to write the data signal transmitted by the data line into a corresponding row of pixel units based on the second control signal;

[0013] The light-emitting control circuit is configured to generate a light-emitting signal based on the third control signal, and transmit the light-emitting signal to the pixel driving circuit, so that the pixel driving circuit controls the light-emitting time periods of the pixel units in the first display area to be the same, and the light-emitting time periods of the remaining pixel units are different from the light-emitting time periods of the pixel units in the first display area; and the start light-emitting time of the pixel unit that emits light earliest when the current frame image is displayed is later than the end light-emitting time of the pixel unit that emits light latest when the previous frame image is displayed.

[0014] In one embodiment, the display driving module is further configured to generate compensation values ​​corresponding to a row of pixel units according to the frame image signal and the central vision area information, and compensate the data signal by using the compensation values;

[0015] The data driving circuit is further configured to send the compensated data signal to the data line of each pixel unit according to the first control signal.

[0016] In one embodiment, the display driving module is further configured to determine the light-emitting period of the pixel units in each row according to the central vision area information according to a first preset mapping relationship, and generate a third control signal according to each light-emitting period.

[0017] In one embodiment, the light emitting control circuit is further configured to transmit the light emitting signal to the pixel driving circuit so that when the pixel unit displays the current frame image based on the data signal, the pixel driving circuit controls the light emitting period of the remaining pixel units to be earlier and / or later than the light emitting period of the pixel units in the first display area.

[0018] In one embodiment, the light emitting control circuit is further configured to transmit the light emitting signal to the pixel driving circuit so that when the pixel unit displays the current frame image based on the data signal, the pixel driving circuit controls the remaining pixel units to emit light simultaneously or sequentially.

[0019] In addition, to achieve the above-mentioned purpose, the present application also provides a display device, including an application processor and the display module as described above;

[0020] The application processor is configured to obtain the current position of the user's central vision area in the display area when the display module displays the current frame image, and generate a frame image signal for the next frame image according to the current position.

[0021] In one embodiment, the application processor comprises:

[0022] An eye tracking module, configured to determine the current position of the user's central vision area in the display area when the display module displays the current frame image;

[0023] A prediction module, configured to predict, based on the current position, the expected position of the central vision area of ​​the user in the display area when the display module displays the next frame of image;

[0024] A determination module configured to determine whether the estimated location is in a preset upper partition or a preset lower partition of the display area;

[0025] A signal generating module is configured to determine the target time according to a second preset mapping relationship based on the judgment result;

[0026] The image rendering module is configured to render the frame image at the target moment in the next frame image to obtain a frame image signal of the next frame image.

[0027] In one embodiment, the signal generating module is further configured to generate central vision area information based on the judgment result.

[0028] In addition, to achieve the above-mentioned purpose, the present application also provides a display method, which is applied to the display device as described above, and the method includes:

[0029] When the display module displays the current frame image, the application processor obtains the current position of the user's central vision area in the display area, and generates a frame image signal of the next frame image according to the current position;

[0030] Receiving a frame image signal of a current frame image through the display module, generating a data signal according to the frame image signal, and controlling a pixel driving circuit according to a central vision area of ​​a user, so that the pixel unit displays the current frame image based on the data signal;

[0031] Among them, when the pixel units display the current frame image based on the data signal, the light-emitting time periods of the pixel units in the first display area including the central vision area are the same, and the light-emitting time periods of the remaining pixel units are different from the light-emitting time periods of the pixel units in the first display area; and the start light-emitting time of the pixel unit that emits light earliest when the current frame image is displayed is later than the end light-emitting time of the pixel unit that emits light latest when the previous frame image is displayed.

[0032] In addition, to achieve the above-mentioned purpose, the present application also provides a computer program product, which includes a computer program, and when the computer program is executed by a processor, the steps of the display method described above are implemented.

[0033] The present application provides a display module, an apparatus, a method and a computer program product, wherein the display module comprises: a display panel, comprising pixel units arranged in an array for constituting a display area, and a pixel driving circuit arranged corresponding to the pixel units; a control unit, configured to receive a frame image signal of a current frame image, generate a data signal according to the frame image signal, and control the pixel driving circuit according to a central vision area of ​​a user, so that the pixel unit displays the current frame image based on the data signal; wherein, when the pixel unit displays the current frame image based on the data signal, the light emitting time periods of the pixel units in a first display area including the central vision area are the same, and the light emitting time periods of the remaining pixel units are different from the light emitting time periods of the pixel units in the first display area; and, the start light emitting time moment of the pixel unit that emits light earliest when the current frame image is displayed is later than the end light emitting time moment of the pixel unit that emits light latest when the previous frame image is displayed. When the pixel units in the display module of the present application display the current frame image, the control unit can control the pixel driving circuit according to the user's central vision area, so that the pixel driving circuit controls the pixel units in the first display area including the central vision area to have the same light-emitting period, and the remaining pixel units to have different light-emitting periods from the pixel units in the first display area, and the start light-emitting time of the pixel unit that emits the earliest when the current frame image is displayed is later than the end light-emitting time of the pixel unit that emits the latest when the previous frame image is displayed. Compared with the existing display by lighting up row by row in sequence, the present application can make the pixel units in the first display area including the central vision area have the same light-emitting period, and the remaining pixel units to have different light-emitting periods from the pixel units in the first display area, and the start light-emitting time of the pixel unit that emits the earliest when the current frame image is displayed is later than the end light-emitting time of the pixel unit that emits the latest when the previous frame image is displayed, thereby preventing the previous frame content from overlapping with the next frame content, and making the central vision area on the screen emit light at the same time, thereby improving the display quality and enhancing the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0035] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0036] Figure 1 A schematic diagram of the overall system structure of a head-mounted wearable device such as VR, MR or AR;

[0037] Figure 2 A schematic diagram of the light-emitting period of a silicon-based OLED driven by a conventional pulse modulation light-emitting method;

[0038] Figure 3 Schematic diagram of visual error caused by the jello effect;

[0039] Figure 4 This is a schematic structural diagram of the first embodiment of the display module of the present application;

[0040] Figure 5 This is a display schematic diagram of the first embodiment of the display module of the present application;

[0041] Figure 6 This is a schematic diagram of display area division in the second embodiment of the display module of the present application;

[0042] Figure 7 This is a display schematic diagram of the second embodiment of the display module of the present application;

[0043] Figure 8 This is another display schematic diagram of the second embodiment of the display module of the present application;

[0044] Fig. 9 This is another display schematic diagram of the second embodiment of the display module of the present application;

[0045] Fig.10 This is another display schematic diagram of the second embodiment of the display module of the present application;

[0046] Fig.11 This is a schematic diagram of voltage compensation in the third embodiment of the display module of this application;

[0047] Fig.12 This is a schematic structural diagram of a first embodiment of a display device according to an embodiment of the present application;

[0048] Fig.13 It is a flowchart diagram of the first embodiment of the display method of the present application.

[0049] Description of Figure Numbers:

[0050] Label name Label name 11 Image rendering module 21 Display Panel 12 Head motion tracking module 22 Data drive circuit 13 Eye Tracking Module 23 Row Driver 14 Time Warp Module 231 Write control driver circuit 15 Prediction Module 232 Lighting control circuit 16 Judgment module 24 Display driver module 17 Signal generation module

[0051] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0052] It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0053] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0054] It should be noted that all directional indications in the embodiments of the present application (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0055] In addition, the descriptions of "first", "second", etc. in this application are only used for descriptive purposes and cannot be understood as indicating or implying their 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 addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0056] It is understandable that with the development of metaverse technology in recent years, wearable devices such as head-mounted virtual reality (VR), mixed reality (MR) and augmented reality (AR) can bring immersive experience to users through near-eye display technology. At the same time, the requirements for high resolution, high refresh rate, large field of view and clarity are gradually increasing in near-eye display, thereby enhancing the wearer's immersive experience and viewing effect, so the display technology in the above-mentioned wearable devices has become a card point that needs to be continuously broken through. Silicon-based organic light-emitting diodes (OLED) have gradually been widely used in near-eye display technology due to their advantages such as self-luminescence, fast response speed, high contrast, high color gamut and low power consumption.

[0057] Reference Figure 1 , Figure 1 The overall structure diagram of the system for head-mounted wearable devices such as VR, MR or AR is as follows: Figure 1 As shown, the wearable device may include: an application processor (AP) and a display module (i.e. Figure 1Display device), AP can communicate with the display module through the interface (i.e. Figure 1 interface) connection for data transmission.

[0058] The AP may mainly include: an image rendering module 11 (i.e. Figure 1 Render), head motion tracking module 12 (i.e. Figure 1 Motion tracker), eye tracking module 13 (i.e. Figure 1 Eye tracker) and time warp module 14 (i.e. Figure 1 The head motion tracking module 12 may be provided with a sensor for collecting the head posture of the user wearing the device, and transmits the collected posture information to the image rendering module 11 and the time warping module 14. The image rendering module 11 may obtain the content to be displayed, and perform predictive rendering on each image frame therein according to the posture information, and transmit the rendering result to the time warping module 14. The time warping module 14 then corrects the rendering result according to the posture information, and transmits the corrected result to the display module through the interface.

[0059] The display module may mainly include: a display panel 21 (i.e. Figure 1 Display panel) and a control unit, wherein the control unit may include a data driving circuit 22 (i.e. Figure 1 Source driver), row driver 23 (i.e. Figure 1 GOA) and display driver module 24 (i.e. Figure 1 Control unit); after the time warping module 14 transmits the correction result to the display panel 21 through the interface and determines the light-emitting period corresponding to each pixel unit, the display driving module 24 controls the data driving circuit 22 and the row driver 23 to drive each row of pixels according to the light-emitting period and the corresponding image data, so that the display panel 21 displays the corresponding image.

[0060] When driving the silicon-based OLED, the display driving module 24 is generally implemented based on pulse modulation light emission. That is, when each row of pixels in the display area displays a frame of image, it is driven row by row, and after writing data to the buffer in turn for each row of pixels, it is immediately controlled to light up and continue to emit light for a certain period of time (for example, the continuous light emission time can be controlled to be 20% of the length of one frame).

[0061] Reference Figure 2 , Figure 2 This is a schematic diagram of the light-emitting period of driving a silicon-based OLED based on a conventional pulse modulation light-emitting method. Figure 2As shown, the light-emitting period of two adjacent frames is displayed, and the horizontal axis is time (i.e. Figure 2 Time), 100% is one frame (i.e. Figure 2 Frame), the ordinate is each row of pixel units in the display area of ​​the display panel 21, and from top to bottom are the first row of pixel units (i.e. Figure 2 The first line) to the last row of pixel units (i.e. Figure 2 The number of pixel units in a specific row is not limited in this embodiment.

[0062] When the silicon-based OLED is driven based on the pulse modulation emission method, the time distortion module 14 transmits the correction result to the display panel 21, and writes each row of image data into the pixel unit through the display driving circuit 22 under the control of the display driving module 24. Figure 2 Process 301 (i.e. Figure 2 In the process of controlling each row of pixel units to light up and display, the display driver module 24 controls the pixel units in each row to light up and display the pixel units in each row, that is, the data is transmitted and written to the pixel units in the first row and the next row in the chronological order. Therefore, the process 301 can be presented as a slash process. Figure 2 Process 302 (i.e. Figure 2 Emission), that is, when a row of pixel units has finished writing data, the display driver module 24 can control them to light up immediately or after a period of time and continue to emit light for a certain period of time. Figure 2 In the example, the light is controlled to continuously emit light for 20% of a frame period. Of course, it can also be other durations, which are not limited in this embodiment.

[0063] And from Figure 2 It is not difficult to see that this method will cause the content of the previous frame to overlap with the content of the next frame (i.e. Figure 2 Display overlap), corresponding to Figure 2 In process 303, that is, when displaying the next frame of data, the pixel units in the bottom part of the rows in the display area are still displaying the content of the previous frame, but the pixel units in the top part of the rows have begun to write and light up the content of the next frame. When displaying fast-moving objects, there is a large delay between the row displays and the display content of different frames overlaps, which will cause a "ghosting" phenomenon, that is, display misalignment, reducing the display quality.

[0064] At the same time, due to the persistence effect of the human eye, that is, when the human eye observes a rapidly changing image, the visual system's perception of the image does not disappear immediately, but will remain on the retina for a period of time. When the user wears the wearable device and moves quickly (such as shaking his head), the display screen will have a delay in the light display between different rows, and there will be a problem of display dislocation or "perception dislocation". The visual distortion error caused by display dislocation or "perception dislocation" is also called the jelly effect. Figure 3 , Figure 3 This is a schematic diagram of the visual error caused by the jelly effect. Figure 3 As shown, Figure 3 The middle figure (a) is a schematic diagram showing a stationary object in space but the head moving rapidly to the left. Figure 3 Middle (b) is a schematic diagram showing a stationary object in space but the head moving rapidly to the right; Figure 3 4011 and 4012 are both display areas. If the displayed content is a fast-moving vertical line, Figure 3 4021 and 4022 are the display effects under ideal conditions. Assuming that the pixel unit is refreshed from top to bottom, during the display refresh process, if the head moves quickly to the left, the human eye will perceive that the straight line is tilted to the right, forming Figure 3 In the scenario of 4031, if the head moves quickly to the right, the human eye will perceive the straight line as tilted to the left, forming Figure 3 In the scenario of 4032, it can be seen that due to display misalignment or "perceptual misalignment", the displayed object is tilted, causing visual distortion errors and reducing the display quality. This problem is also called the jello effect. Therefore, the display quality is poor, affecting the user experience.

[0065] Therefore, in order to solve the above defects, the present embodiment provides a display module, in which when the pixel units in the display module display the current frame image, the control unit can control the pixel driving circuit according to the central vision area of ​​the user, so that the pixel driving circuit controls the pixel units in the first display area including the central vision area to have the same light-emitting period, and the remaining pixel units to have different light-emitting periods from the pixel units in the first display area, and the start light-emitting time of the pixel unit that emits the earliest light when the current frame image is displayed is later than the end light-emitting time of the pixel unit that emits the latest light when the previous frame image is displayed. Compared with the existing display by lighting up row by row in sequence, the present embodiment can make the pixel units in the first display area including the central vision area have the same light-emitting period, and the remaining pixel units to have different light-emitting periods from the pixel units in the first display area, and the start light-emitting time of the pixel unit that emits the earliest light when the current frame image is displayed is later than the end light-emitting time of the pixel unit that emits the latest light when the previous frame image is displayed, so as to prevent the previous frame content from overlapping with the next frame content, and make the central vision area on the screen emit light at the same time, thereby improving the display quality and enhancing the user experience.

[0066] For ease of understanding, the following combination Figures 4 to 10 The display module provided in the embodiment of the present application is introduced in detail.

[0067] Reference Figure 4 , Figure 4 The first embodiment of the display module of the present application is shown in FIG. Figure 4 As shown, in this embodiment, the display module includes:

[0068] The display panel 21 includes pixel units arranged in an array and used to form a display area, and pixel driving circuits corresponding to the pixel units;

[0069] It should be noted that the display module in the embodiment of the present application can be a display module for a head-mounted wearable device to perform near-eye display, and of course it can also be a display module for other devices to perform display, and this embodiment does not limit this. Specifically, the specific structure of the above-mentioned display module in this embodiment can be Figure 4 The form shown, of course, can also be other forms, this embodiment adopts Figure 4 is described in the form of .

[0070] It is understandable that the above display area can be Figure 4 The area in the display panel 21 used to display the picture, the above-mentioned pixel unit can be a unit used for display in the display panel 21. In this embodiment, the above-mentioned pixel unit may include a capacitor and a light-emitting diode, and the light-emitting diode is discharged by the capacitor to complete the display. In this embodiment, a plurality of pixel units can be arranged in the display panel 21, and each pixel unit is arranged in an array, which is consistent with the layout structure of each pixel unit in the existing display panel 21, and this embodiment will not be repeated.

[0071] It should be understood that the above-mentioned pixel driving circuit can be a circuit for driving a pixel unit to light up, and can include a number of switch tubes, etc., through the cooperation of the switch tubes to realize the charging and discharging of the capacitor, and then complete the display. In this embodiment, the above-mentioned pixel driving circuit can also be consistent with the pixel driving circuit structure in the existing display panel 21, and this embodiment will not be repeated.

[0072] A control unit is configured to receive a frame image signal of a current frame image, generate a data signal according to the frame image signal, and control the pixel driving circuit according to the user's central vision area so that the pixel unit displays the current frame image based on the data signal.

[0073] It should also be noted that the above-mentioned control unit in this embodiment can also be consistent with the structure of the existing control unit, and may include a display driving module 24, a data driving circuit 22 and a row driver 23. The display driving module 24 is connected to the row driver 23 and the data driving circuit 22 respectively, and the row driver 23 and the data driving circuit 22 can both be connected to the display panel 21.

[0074] The above-mentioned current frame image can be a frame image currently displayed by the display panel 21, the above-mentioned frame image signal can be a signal generated by the application processor when the display panel 21 is required to display the frame image, and the above-mentioned digital signal can be a corresponding signal when the control unit controls the display panel 21 to display the frame image.

[0075] The central vision area can be the area where the user's eyes are looking at in the display area. In VR, AR and MR product applications, in order to reduce the amount of data transmitted for computing power consumption, considering the characteristics of the human eye, the display area can generally be divided into a central vision area (foveal) and a peripheral vision area (peripheral). The central vision area can provide more detailed visual content. Figure 4 The eye tracking module 13 in the application processor can collect the user's central vision area.

[0076] It should be emphasized that, in this embodiment, when the pixel units display the current frame image based on the data signal, the light-emitting time periods of the pixel units in the first display area including the central vision area are the same, and the light-emitting time periods of the remaining pixel units are different from the light-emitting time periods of the pixel units in the first display area; and, the start light-emitting time of the pixel unit that emits light earliest when the current frame image is displayed is later than the end light-emitting time of the pixel unit that emits light latest when the previous frame image is displayed.

[0077] For ease of understanding, refer to Figure 5 To explain, Figure 5 This is a display schematic diagram of the first embodiment of the display module of the present application, such as Figure 5 As shown, two adjacent frames are still shown for illustration. When the pixel unit displays the current frame image, the central visual area is as follows Figure 5 As shown in the foveal, if the display area (i.e. Figure 5 The pixel units within the preset range of the central visual area in the display panel are recorded as the first display area (the preset range can be set according to the actual situation, and 75% is used for illustration in this embodiment, that is, Figure 5 The control unit can control the pixel units in the first display area to have the same light emitting period, that is, Figure 5Emission1 in the display area and controls the remaining pixel units (i.e. Figure 5 The area between the 3 / 4 line and the last line) Figure 5 The light emitting period of the pixel units in Emission2) is different from that in the first display area.

[0078] The above-mentioned start luminescence time may be the time when the pixel unit starts to emit light, and the end luminescence time may be the time when the pixel unit stops luminescence. In this embodiment, the control unit may also control the start luminescence time of the pixel unit that emits light earliest when the current frame image is displayed to be later than the end luminescence time of the pixel unit that emits light latest when the previous frame image is displayed. At the same time, since some pixel units in the display area emit light at the same time. While ensuring continuous lighting within a frame, if the continuous luminescence time of a row of pixel units is continued to be 20% of a frame period, then there may be a black period (i.e., 0.05) between the time when the last row of pixel units in the first frame stops luminescence and the time when the first row of pixel units in the second frame starts to light up. Figure 5 In the Blackinsert, it is only necessary to ensure that the duration of the black insertion period is greater than or equal to 0 but less than or equal to 60% of a frame period (because a 20% bright pixel unit of the previous frame image and a 20% bright pixel unit of the current frame image are required in a frame), so that the content of the previous frame and the content of the next frame will not overlap, thereby improving the display quality and enhancing the user experience.

[0079] Furthermore, in this embodiment, the control unit includes:

[0080] The display driving module 24 is configured to generate a data signal, a first control signal and a second control signal according to the frame image signal, and generate a third control signal according to the received central vision area information, wherein the central vision area information is generated based on the central vision area of ​​the user;

[0081] A data driving circuit 22, configured to send the data signal to the data line of each pixel unit according to the first control signal;

[0082] A write control driving circuit 231 is configured to write the data signal transmitted by the data line into a corresponding row of pixel units based on the second control signal;

[0083] The light-emitting control circuit 232 is configured to generate a light-emitting signal based on the third control signal, and transmit the light-emitting signal to the pixel driving circuit, so that the pixel driving circuit controls the light-emitting time periods of the pixel units in the first display area to be the same, and the light-emitting time periods of the remaining pixel units are different from the light-emitting time periods of the pixel units in the first display area; and the start light-emitting time of the pixel unit that emits light earliest when the current frame image is displayed is later than the end light-emitting time of the pixel unit that emits light latest when the previous frame image is displayed.

[0084] It should be noted that the above-mentioned central vision area information may be information about the position of the user's central vision area in the display area. In this embodiment, when displaying the current frame image, the application processor may render the content to be displayed of the current frame when the previous frame image is displayed, obtain the frame image signal corresponding to the current frame image, and transmit it to the display driver module 24. At the same time, when the previous frame image is displayed, the application processor may collect the position of the user's central vision area in the display area through the internal eye tracking module 13, and predict the position of the central vision area of ​​the current frame, and then generate the above-mentioned central vision area information and transmit it to the display driver module 24.

[0085] When the display driver module 24 receives the frame image signal from the application processor, it can generate a data signal, a first control signal and a second control signal, and at the same time generate a third control signal according to the central visual area information; then the first control signal can be transmitted to the data driver circuit 22, and the data driver circuit 22 can send the data signal to the data line corresponding to each pixel unit when receiving the first control signal; at the same time, the display driver module 24 can also transmit the generated second control signal to the write control driver circuit 231, and after the write control driver circuit 231 receives the second control signal, the data signal in the data line can be written into the pixel unit corresponding to a row, which can be specifically charged to the capacitor in the pixel unit (the charging process can correspond to Figure 5 After the capacitor is charged, the display driving circuit can transmit the generated third control signal to the light-emitting control circuit 232, and the light-emitting control circuit 232 can generate a light-emitting signal based on the third control signal. The light-emitting signal can be a signal that controls when each pixel unit is lit. The light-emitting control circuit 232 can transmit the light-emitting signal to the pixel driving circuit, so that the pixel driving circuit turns on the corresponding switch tube to make each pixel unit light up according to the time period. Figure 5The display is performed in the manner shown, that is, the light-emitting period of the pixel units in the first display area is the same, and the light-emitting period of the remaining pixel units is different from the light-emitting period of the pixel units in the first display area; and the start light-emitting time of the pixel unit that emits light earliest when the current frame image is displayed is later than the end light-emitting time of the pixel unit that emits light latest when the previous frame image is displayed.

[0086] When the pixel units in the display module of this embodiment display the current frame image, the control unit can control the pixel driving circuit according to the central vision area of ​​the user, so that the pixel driving circuit controls the pixel units in the first display area including the central vision area to have the same light-emitting period, and the remaining pixel units to have different light-emitting periods from the pixel units in the first display area, and the start light-emitting time of the pixel unit that emits the earliest light when the current frame image is displayed is later than the end light-emitting time of the pixel unit that emits the latest light when the previous frame image is displayed. Compared with the existing display by lighting up row by row in sequence, this embodiment can make the pixel units in the first display area including the central vision area have the same light-emitting period, and the remaining pixel units to have different light-emitting periods from the pixel units in the first display area, and the start light-emitting time of the pixel unit that emits the earliest light when the current frame image is displayed is later than the end light-emitting time of the pixel unit that emits the latest light when the previous frame image is displayed, so as to prevent the previous frame content from overlapping with the next frame content, and make the central vision area on the screen emit light at the same time, thereby improving the display quality and enhancing the user experience.

[0087] At the same time, in order to prevent content overlap, some of the traditional methods used are to speed up the data transmission and writing speed, compress the data transmission and writing time, so as to leave time for all rows to emit light at the same time within a frame cycle, so as to reduce or eliminate the delay in the light display between pixels in different rows. However, as the resolution of silicon-based OLED products gradually increases, it poses a challenge to increase the screen refresh rate or speed up the data transmission and writing speed. This embodiment adjusts the light-emitting moment of the pixel unit without changing the data transmission and writing speed and refresh rate, thereby improving the display quality and enhancing the user experience.

[0088] Continue to refer to Figure 4 , and based on the above-mentioned first embodiment, a second embodiment of the display module of the present application is proposed, in order to generate the above-mentioned third control signal so that the light-emitting time of the pixel units in the first display area is the same, such as Figure 4 As shown, in this embodiment, the display driving module 24 is further configured to determine the light-emitting period of the pixel unit in each row according to the central vision area information according to a first preset mapping relationship, and generate a third control signal according to each light-emitting period.

[0089] It should be noted that the first preset mapping relationship may be a relationship between different positions of the central vision area in the display area and corresponding different light-emitting periods of the pixel units.

[0090] In this embodiment, the display area can be pre-divided into upper and lower half areas according to the middle row of pixel units in the display area. Figure 6 , Figure 6 This is a schematic diagram of the display area division in the second embodiment of the display module of this application. Figure 6 As shown, the display area is 801, and the middle row of pixel units in the display area is 802. Assuming that the maximum number of pixel unit rows in the central vision area does not exceed 40% of the total number of pixel unit rows in the display area, there are two situations: the first is that the central vision area completely falls in the upper half of the display area or most of the central vision area (that is, including half of the central vision area) falls in the upper half of the display area, that is, the middle row of pixel units in the central vision area is located above the middle row of pixel units in the display area, for example Figure 6 803 and 804; the second type is that the central vision area is completely located in the lower half of the display area or most of the central vision area (i.e., including half of the central vision area) is located in the lower half of the display area, that is, the middle row of pixel units in the central vision area is located below the middle row of pixel units in the display area, for example Figure 6 Among them, 805 and 806.

[0091] Based on the above two situations, this embodiment can pre-set the light-emitting period corresponding to each pixel unit for the above two situations, and construct the above first preset mapping relationship according to the setting result. Figures 7 to 9 , Figure 7 This is a display schematic diagram of the second embodiment of the display module of the present application. Figure 8 This is another display schematic diagram of the second embodiment of the display module of this application. Fig. 9 This is another display schematic diagram of the second embodiment of the display module of the present application;

[0092] Combination Figure 5 as well as Figure 7 ,exist Figure 5 as well as Figure 7 The above preset range can be set to 75%, the difference is Figure 5 The current central visual area (i.e. Figure 5 The foveal in the middle falls in the upper half of the display area, and thus the upper 75% of the display area can be divided together, and the lower 25% of the display area can be divided together, and the pixel units in the upper 75% of the display area are set to have the same light-emitting period (i.e. Figure 5In Emission 1), the pixel units in the lower 25% area are set to have a different light-emitting period from the light-emitting period in the upper 75%. Specifically, the pixel units in the lower 25% area can emit light row by row (i.e. Figure 5 Emission2), Figure 7 Central visual area (i.e. Figure 7 The foveal in the middle falls in the lower half of the display area, and the lower 75% of the display area can be divided together, and the upper 25% of the area can be divided together, and the pixel units in the lower 75% of the display area are set to have the same light-emitting period (i.e. Figure 7 In Emission 1), the pixel units in the upper 25% area are set to have a different light-emitting period from the lower 75%, specifically, the pixel units in the upper 25% area can emit light row by row (i.e. Figure 7 (Emission2).

[0093] As another implementation, Figure 8 as well as Fig. 9 As shown, in Figure 8 as well as Fig. 9 The above preset range can be set to 75%, the difference is Figure 8 The pixel units in the upper 75% of the display area can be set to have the same light-emitting period (i.e. Figure 8 In Emission1), the pixel units in the lower 25% area are set to have a different light-emitting period from the light-emitting period in the upper 75%. Specifically, the pixel units in the lower 25% area are also set to have the same light-emitting period (i.e. Figure 8 Emission2), Fig. 9 The pixel units in the lower 75% of the display area can be set to have the same light-emitting period (i.e. Fig. 9 In Emission1), the pixel units in the upper 25% area are set to have a different light-emitting period from the lower 75%. Specifically, the pixel units in the upper 25% area are also set to have the same light-emitting period (i.e. Fig. 9 (Emission2).

[0094] It should be emphasized that the specific preset range and the number of division results can be set according to actual conditions, and this embodiment does not limit this.

[0095] According to the above, in actual use, the light-emitting period corresponding to each pixel unit can be set in advance according to the position of different central vision areas, and it is only necessary to ensure that the light-emitting period of the pixel unit in the first display area is the same, and the light-emitting period of the remaining pixel units is different from the light-emitting period of the pixel unit in the first display area; and the start light-emitting time of the pixel unit that emits light earliest when the current frame image is displayed is later than the end light-emitting time of the pixel unit that emits light latest when the previous frame image is displayed, so as to obtain the above-mentioned first preset mapping relationship.

[0096] When in use, the display driving module 24 can determine the position of the central vision area after obtaining the predicted central vision area information, and query the pre-constructed first preset mapping relationship to determine the light-emitting period of each pixel unit, and generate a third control signal based on each light-emitting period and transmit it to the light-emitting control circuit 232.

[0097] Further, in order to make the light-emitting periods of the pixel units in the first display area the same, and the light-emitting periods of the other pixel units different from the light-emitting periods of the pixel units in the first display area, continue based on the above Figure 5 as well as Figures 7 to 9 In the present embodiment, the light emitting control circuit 232 is further configured to transmit the light emitting signal to the pixel driving circuit so that when the pixel unit displays the current frame image based on the data signal, the pixel driving circuit controls the light emitting period of the remaining pixel units to be earlier and / or later than the light emitting period of the pixel units in the first display area.

[0098] It is understandable that in this embodiment, the light emitting control circuit 232 can generate a light emitting signal after receiving the third control signal. Since the third control signal can make the light emitting period of the pixel units in the first display area the same, and the light emitting period of the remaining pixel units is different from the light emitting period of the pixel units in the first display area, when the light emitting control circuit 232 transmits the generated light emitting signal to the pixel driving circuit, the light emitting period of the remaining pixel units can be earlier and / or later than the light emitting period of the pixel units in the first display area.

[0099] in, Figure 5 as well as Figure 8 The light-emitting period of the remaining pixel units is later than the light-emitting period of the pixel units in the first display area. Figure 7 as well as Fig. 9 Then the light-emitting period of the remaining pixel units is earlier than the light-emitting period of the pixel units in the first display area;

[0100] For the case where the light-emitting period of the remaining pixel units is earlier or later than the light-emitting period of the pixel units in the first display area, please refer to Fig.10 , Fig.10 This is another display schematic diagram of the second embodiment of the display module of this application. Fig.10 As shown, in order to improve the display effect, the present embodiment can not only divide the preset range into 75%, but also divide the preset range into less than 75% (for example Fig.10 When the central visual area is located in the middle of the display area (i.e., 50%), it may not be the case. Fig.10 When the 1 / 4 line is between the 3 / 4 line and the middle area, the first preset mapping relationship can be set to have the same simultaneous light emitting period of the pixel units in the middle area (ie Fig.10 For the period corresponding to Emission1 in the middle area (i.e. Fig.10 The light emitting period of the pixel units in the middle area can be set earlier than the simultaneous light emitting period of the pixel units in the middle area (i.e. Fig.10 For the period corresponding to Emission2 in the middle area (i.e. Fig.10 The light emitting period of the pixel units in the middle area can be set to be later than the simultaneous light emitting period of the pixel units in the middle area (i.e. Fig.10 The time period corresponding to Emission3 in the above table).

[0101] It should be emphasized that the above-mentioned preset range and the first preset mapping relationship can be set according to actual conditions, and this embodiment does not limit this.

[0102] Furthermore, in this embodiment, the light emitting control circuit 232 is also configured to transmit the light emitting signal to the pixel driving circuit, so that when the pixel unit displays the current frame image based on the data signal, the pixel driving circuit controls the remaining pixel units to emit light simultaneously or sequentially.

[0103] Continue as Figure 5 as well as Figure 7 As shown, the remaining pixel units are shown to emit light in sequence, such as Figure 8 as well as Fig. 9 As shown, what is shown is the scene where the remaining pixels emit light at the same time.

[0104] In actual use, the light-emitting periods of the remaining pixel units can be configured in the above-mentioned first preset mapping relationship to emit light simultaneously or sequentially. After the display driving module 24 determines the light-emitting period of each pixel unit according to the first preset mapping relationship, when the generated third control signal is transmitted to the light-emitting control circuit 232, the light-emitting signal generated by the light-emitting control circuit 232 can enable the pixel driving unit to drive the remaining pixel units to emit light simultaneously or sequentially.

[0105] Reference Fig.11 , Fig.11 This is a schematic diagram of voltage compensation in the third embodiment of the display module of the present application. Based on the above embodiments, the third embodiment of the display module of the present application is proposed.

[0106] Furthermore, if Fig.11 As shown, considering that the present embodiment adjusts the light-emitting period of each traditional pixel unit, and thus the time required to maintain light emission after charging between pixel units in different rows is different, resulting in different leakage currents between pixel units in different rows, flickering or uneven display, etc., in order to reduce the impact of leakage current on subsequent display quality, the display driver module 24 in the present embodiment can compensate the generated data signal, specifically:

[0107] The display driving module 24 is further configured to generate compensation values ​​corresponding to a row of pixel units according to the frame image signal and the central vision area information, and compensate the data signal by using the compensation values;

[0108] The data driving circuit 22 is further configured to send the compensated data signal to the data line of each pixel unit according to the first control signal.

[0109] It should be noted that, after receiving the frame image signal and the central vision area information, the display driving module 24 may first determine the light-emitting period (i.e. Fig.11 The time period corresponding to Emission1 and the time period corresponding to Emission2 in the above example are determined, and the time corresponding to the writing of the data signal of the pixel unit of each row is determined according to the generated second control signal (ie Fig.11 Then, the start time of light emission can be determined according to the light emission period of each row of pixel units, and the difference between the start time of light emission and the time corresponding to the writing of data signal is made (i.e. Fig.11, Δt1, Δt2, Δt3, Δt4 and Δt5), and query a preset two-dimensional look-up table (LUT) according to the difference. The preset two-dimensional LUT table can be measured and stored in the above-mentioned device in advance, and the preset two-dimensional LUT table can store compensation values ​​corresponding to different difference values.

[0110] The compensation value may be a grayscale voltage compensation value corresponding to a row of pixel units. After obtaining the compensation value corresponding to each row of pixel units by searching the preset two-dimensional LUT table according to the difference value, since the above-mentioned data signal in this embodiment may be a signal corresponding to the grayscale voltage, the display driving module 24 can compensate each data signal, and after the data driving circuit 22 receives the first control signal, the compensated data signal corresponding to the pixel units of each row is transmitted to the data line corresponding to each pixel unit, so that when the pixel unit is displayed, it is displayed according to the compensated data signal, thereby improving the display quality.

[0111] In addition, to achieve the above-mentioned purpose, the embodiment of the present application also provides a display device, referring to Fig.12 , Fig.12 It is a structural schematic diagram of the first embodiment of the display device of the present application.

[0112] like Fig.12 As shown, in this embodiment, the display device includes: an application processor and the display module as described above;

[0113] The application processor may include: an image rendering module 11 (i.e. Fig.12 Render), head motion tracking module 12 (i.e. Fig.12 Motion tracker), eye tracking module 13 (i.e. Fig.12 Eye tracker) and time warp module 14 (i.e. Fig.12 In the time wrap, the head motion tracking module 12 may be provided with a sensor for collecting the head posture of the wearing user;

[0114] First, the application processor can obtain the content to be displayed, and generate a frame image signal corresponding to the current frame image according to the content to be displayed, and transmit it to the image rendering module 11. The head movement tracking module 12 can transmit the acquired posture information to the image rendering module 11 and the time warping module 14; the image rendering module 11 can render the current frame image according to the above posture information, obtain the rendered frame image signal, and transmit it to the time warping module 14; the time warping module 14 then corrects the rendered frame image signal according to the above posture information, and transmits the corrected frame image signal to the display driving module 24 of the display module through the interface, and the display driving module 24 can generate a data signal, a first control signal and a second control signal according to the corrected frame image signal.

[0115] It should be emphasized that in this embodiment, when the display module displays the current frame image, the application processor can start to determine the next frame image based on the content to be displayed, and obtain the corrected frame image signal corresponding to the next frame image according to the above steps, and then transmit it to the display driver module 24. The display driver module 24 can generate a data signal, a first control signal and a second control signal according to the corrected frame image signal, so as to display the next frame image.

[0116] At the same time, the application processor in this embodiment may also include an eye tracking module 13 (i.e. Fig.12 Eyetracker), the eye tracking module 13 can be the same as above, when the display module displays the current frame image, obtain the information required for displaying the next frame image, specifically, when the current frame image is displayed, the current position of the user's central vision area in the display area is collected, so as to predict the position of the user's central vision area in the display area when the next frame image is displayed, and transmit the central vision area information to the display driver module 24 in the form of central vision area information, so that the display driver module 24 generates a third control signal corresponding to the next frame image according to the central vision area information.

[0117] Furthermore, considering that different rows have different display light emission times during driving, if the human eye focuses on the top or bottom area of ​​the screen, a large display error may be caused. Therefore, in order to further improve the display quality, in this embodiment, when the application processor generates the frame image signal of the next frame of image, it can be generated in combination with the position of the central vision area in the display area, specifically:

[0118] The application processor is configured to obtain the current position of the user's central vision area in the display area when the display module displays the current frame image, and generate a frame image signal for the next frame image according to the current position.

[0119] It should be noted that the above-mentioned current position may be the position of the user's central vision area in the display area when the current frame image is displayed, which may be specifically obtained through the above-mentioned eye tracking module 13 .

[0120] In actual use, when the display module displays the current frame image, the application processor can generate a frame image signal of the next frame image according to the content to be displayed and the current position of the central visual area in the display area.

[0121] Furthermore, in order to obtain the frame image signal of the next frame image, as Fig.12 As shown, in this embodiment, the application processor includes:

[0122] The eye tracking module 13 is configured to determine the current position of the user's central vision area in the display area when the display module displays the current frame image;

[0123] The prediction module 15 is configured to predict, based on the current position, the expected position of the central vision area of ​​the user in the display area when the display module displays the next frame of image;

[0124] A determination module 16 is configured to determine whether the estimated location is in a preset upper partition or a preset lower partition of the display area;

[0125] The signal generating module 17 is configured to determine the target time according to the second preset mapping relationship based on the judgment result;

[0126] The image rendering module 11 is configured to render the frame image at the target moment in the next frame image to obtain a frame image signal of the next frame image.

[0127] It is understandable that the above-mentioned estimated position may be the position of the user's central visual area in the display area when the next frame of image is displayed. The above-mentioned preset upper partition may be the partition corresponding to the upper half of the display area, and the above-mentioned preset lower partition may be the partition corresponding to the lower half of the display area, that is, Figure 6 The upper and lower areas corresponding to 802.

[0128] In actual use, after the eye tracking module 13 obtains the current position of the user's central visual area in the display area, it can be transmitted to the prediction module 15 (i.e. Fig.12 The prediction module 15 may be provided with a prediction algorithm, which can predict the location of the user's central visual area in the display area when the display module displays the next frame of image according to the current location, as the above-mentioned predicted location, and transmit it to the judgment module 16 (i.e. Fig.12In the judgment), the judgment module 16 can judge whether the estimated position is the upper partition or the lower partition, and obtain a judgment result, and transmit the judgment result to the signal generating module 17.

[0129] It should be understood that the above-mentioned second preset mapping relationship can be a mapping relationship between the partition where the expected position is located and the target moment, and the target moment can be a moment with better display quality in the simultaneous light-emitting period. This embodiment uses the middle moment of the simultaneous light-emitting period for illustration.

[0130] That is, in actual use, after the signal generating module 17 obtains the judgment result, the target time can be determined according to the second preset mapping relationship, for example Figure 5 The time t1 in can be the target time, or Figure 7 The time t2 in can be the target time, or Figure 8 The time t1 in can be the target time, or Fig. 9 The moment t2 in the time domain may be the target moment; after obtaining the target moment, it is transmitted to the image rendering module 11, and the image rendering module 11 may render the frame image corresponding to the target moment in the next frame image, obtain the frame image signal of the next frame image, and transmit it to the display driving module 24 after being corrected by the time warping module 14 and other operations, so that when the next frame image is displayed, the frame image corresponding to the target moment (i.e., t1 or t2) is specifically displayed, thereby reducing the display error caused by the human eye looking at the top or bottom area of ​​the screen, thereby improving the display quality.

[0131] Furthermore, the signal generating module 17 is also configured to generate central vision area information based on the judgment result.

[0132] After receiving the determination result, the signal generating module 17 may further generate central vision area information and directly transmit it to the display driving module 24 , so that the display driving module 24 may generate a third control signal according to the central vision area information.

[0133] It should be emphasized that the specific implementation method of the display module in the display device described in the present application can refer to the above-mentioned embodiment of the display module, which will not be repeated here.

[0134] In addition, to achieve the above purpose, the present application embodiment also provides a display method, referring to Fig.13 , Fig.13 It is a flowchart diagram of the first embodiment of the display method of the present application.

[0135] like Fig.13 As shown, in this embodiment, the display method is applied to the display device as described above, and the method includes:

[0136] Step S10: when the display module displays the current frame image, the application processor obtains the current position of the user's central vision area in the display area, and generates a frame image signal of the next frame image according to the current position;

[0137] Step S20: receiving a frame image signal of a current frame image through the display module, generating a data signal according to the frame image signal, and controlling a pixel driving circuit according to a central vision area of ​​a user, so that the pixel unit displays the current frame image based on the data signal;

[0138] Among them, when the pixel units display the current frame image based on the data signal, the light-emitting time periods of the pixel units in the first display area including the central vision area are the same, and the light-emitting time periods of the remaining pixel units are different from the light-emitting time periods of the pixel units in the first display area; and the start light-emitting time of the pixel unit that emits light earliest when the current frame image is displayed is later than the end light-emitting time of the pixel unit that emits light latest when the previous frame image is displayed.

[0139] When the pixel units in the display module of this embodiment display the current frame image, the control unit can control the pixel driving circuit according to the central vision area of ​​the user, so that the pixel driving circuit controls the pixel units in the first display area including the central vision area to have the same light-emitting period, and the remaining pixel units to have different light-emitting periods from the pixel units in the first display area, and the start light-emitting time of the pixel unit that emits the earliest light when the current frame image is displayed is later than the end light-emitting time of the pixel unit that emits the latest light when the previous frame image is displayed. Compared with the existing display by lighting up row by row in sequence, this embodiment can make the pixel units in the first display area including the central vision area have the same light-emitting period, and the remaining pixel units to have different light-emitting periods from the pixel units in the first display area, and the start light-emitting time of the pixel unit that emits the earliest light when the current frame image is displayed is later than the end light-emitting time of the pixel unit that emits the latest light when the previous frame image is displayed, so as to prevent the previous frame content from overlapping with the next frame content, and make the central vision area on the screen emit light at the same time, thereby improving the display quality and enhancing the user experience.

[0140] As an implementation manner, the above step S10 includes: determining the current position of the user's central vision area in the display area by the eye tracking module 13 when the display module displays the current frame image;

[0141] Predicting, by the prediction module 15, the expected position of the central vision area of ​​the user in the display area when the display module displays the next frame of image according to the current position;

[0142] Determine, by the determination module 16, whether the estimated position is in a preset upper partition or a preset lower partition of the display area;

[0143] The signal generating module 17 determines the target time according to the second preset mapping relationship based on the judgment result;

[0144] The image rendering module 11 renders the frame image at the target moment in the next frame image to obtain a frame image signal of the next frame image.

[0145] As an implementation manner, after the step of determining the target time according to the second preset mapping relationship based on the judgment result by the signal generating module 17, the following step is further included:

[0146] The signal generating module 17 generates central vision area information based on the judgment result.

[0147] As an implementation manner, the above step S20 includes:

[0148] Generate a data signal, a first control signal and a second control signal according to the frame image signal through the display driving module 24, and generate a third control signal according to the received central vision area information, wherein the central vision area information is generated based on the central vision area of ​​the user;

[0149] Sending the data signal to the data line of each pixel unit through the data driving circuit 22 according to the first control signal;

[0150] Based on the second control signal, the data signal transmitted by the data line is written into the corresponding row of pixel units by the write control driving circuit 231;

[0151] A light-emitting signal is generated based on the third control signal by the light-emitting control circuit 232, and the light-emitting signal is transmitted to the pixel driving circuit, so that the pixel driving circuit controls the light-emitting time periods of the pixel units in the first display area to be the same, and the light-emitting time periods of the remaining pixel units are different from the light-emitting time periods of the pixel units in the first display area; and the start light-emitting time of the pixel unit that emits light earliest when the current frame image is displayed is later than the end light-emitting time of the pixel unit that emits light latest when the previous frame image is displayed.

[0152] As an implementation manner, the step of sending the data signal to the data line of each pixel unit according to the first control signal by the data driving circuit 22 includes:

[0153] The display driving module 24 generates compensation values ​​corresponding to a row of pixel units according to the frame image signal and the central vision area information, and compensates the data signal by using the compensation values;

[0154] The compensated data signal is sent to the data line of each pixel unit through the data driving circuit 22 according to the first control signal.

[0155] As an implementation manner, the step of generating the third control signal according to the received central vision area information includes:

[0156] The display driving module 24 determines the light-emitting period of the pixel units in each row according to the central vision area information in accordance with a first preset mapping relationship, and generates a third control signal according to each light-emitting period.

[0157] As an implementation manner, the step of transmitting the light emitting signal to the pixel driving circuit includes:

[0158] The light emitting signal is transmitted to the pixel driving circuit through the light emitting control circuit 232, so that when the pixel unit displays the current frame image based on the data signal, the pixel driving circuit controls the light emitting period of the remaining pixel units to be earlier and / or later than the light emitting period of the pixel units in the first display area.

[0159] As an implementation manner, the step of transmitting the light emitting signal to the pixel driving circuit includes:

[0160] The light emitting signal is transmitted to the pixel driving circuit through the light emitting control circuit 232, so that when the pixel unit displays the current frame image based on the data signal, the pixel driving circuit controls the remaining pixel units to emit light simultaneously or sequentially.

[0161] It should be emphasized that the embodiments or specific implementations of the display method of the present application can refer to the embodiments of the above-mentioned display device and will not be repeated here.

[0162] In addition, to achieve the above-mentioned purpose, an embodiment of the present application further provides a computer program product, wherein the computer program product includes a computer program, and when the computer program is executed by a processor, the steps of the display method described above are implemented.

[0163] It should be emphasized that the embodiments or specific implementation methods of the computer program product of the present application can refer to the embodiments of the above-mentioned display method, which will not be repeated here.

[0164] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or system. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or system including the element.

[0165] The serial numbers of the above-mentioned embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0166] The above are only preferred embodiments of the present application, and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A display module, characterized in that: The display module comprises: A display panel, comprising pixel units arranged in an array for constituting a display area, and a pixel driving circuit arranged corresponding to the pixel units; a control unit configured to receive a frame image signal of a current frame image, generate a data signal according to the frame image signal, and control the pixel driving circuit according to a central vision area of ​​a user so that the pixel unit displays the current frame image based on the data signal; Among them, when the pixel units display the current frame image based on the data signal, the light-emitting time periods of the pixel units in the first display area including the central vision area are the same, and the light-emitting time periods of the remaining pixel units are different from the light-emitting time periods of the pixel units in the first display area; and the start light-emitting time of the pixel unit that emits light earliest when the current frame image is displayed is later than the end light-emitting time of the pixel unit that emits light latest when the previous frame image is displayed.

2. The display module according to claim 1, wherein: The control unit comprises: A display driving module, configured to generate a data signal, a first control signal and a second control signal according to the frame image signal, and generate a third control signal according to the received central vision area information, wherein the central vision area information is generated based on the central vision area of ​​the user; a data driving circuit, configured to send the data signal to a data line of each pixel unit according to the first control signal; a write control driving circuit, configured to write the data signal transmitted by the data line into a corresponding row of pixel units based on the second control signal; The light-emitting control circuit is configured to generate a light-emitting signal based on the third control signal, and transmit the light-emitting signal to the pixel driving circuit, so that the pixel driving circuit controls the light-emitting time periods of the pixel units in the first display area to be the same, and the light-emitting time periods of the remaining pixel units are different from the light-emitting time periods of the pixel units in the first display area; and the start light-emitting time of the pixel unit that emits light earliest when the current frame image is displayed is later than the end light-emitting time of the pixel unit that emits light latest when the previous frame image is displayed.

3. The display module according to claim 2, wherein: The display driving module is further configured to generate compensation values ​​corresponding to a row of pixel units according to the frame image signal and the central vision area information, and compensate the data signal by using the compensation values; The data driving circuit is further configured to send the compensated data signal to the data line of each pixel unit according to the first control signal.

4. The display module according to claim 2, wherein: The display driving module is further configured to determine the light-emitting period of the pixel units in each row according to the central vision area information and a first preset mapping relationship, and generate a third control signal according to each light-emitting period.

5. The display module according to claim 2, wherein: The light-emitting control circuit is also configured to transmit the light-emitting signal to the pixel driving circuit so that when the pixel unit displays the current frame image based on the data signal, the pixel driving circuit controls the light-emitting period of the remaining pixel units to be earlier and / or later than the light-emitting period of the pixel units in the first display area.

6. The display module according to claim 5, characterized in that: The light emitting control circuit is further configured to transmit the light emitting signal to the pixel driving circuit, so that when the pixel unit displays the current frame image based on the data signal, the pixel driving circuit controls the remaining pixel units to emit light simultaneously or sequentially.

7. A display device, characterized in that: comprising an application processor and a display module as claimed in any one of claims 1 to 6; The application processor is configured to obtain the current position of the user's central vision area in the display area when the display module displays the current frame image, and generate a frame image signal for the next frame image according to the current position.

8. The display device according to claim 7, characterized in that: The application processor comprises: An eye tracking module, configured to determine the current position of the user's central vision area in the display area when the display module displays the current frame image; A prediction module, configured to predict, based on the current position, the expected position of the central vision area of ​​the user in the display area when the display module displays the next frame of image; A determination module configured to determine whether the estimated location is in a preset upper partition or a preset lower partition of the display area; A signal generating module is configured to determine the target time according to a second preset mapping relationship based on the judgment result; The image rendering module is configured to render the frame image at the target moment in the next frame image to obtain a frame image signal of the next frame image.

9. The display device according to claim 8, wherein: The signal generating module is further configured to generate central vision area information based on the judgment result.

10. A display method, characterized in that: The display method is applied to the display device according to any one of claims 7 to 9, and the method comprises: When the display module displays the current frame image, the application processor obtains the current position of the user's central vision area in the display area, and generates a frame image signal of the next frame image according to the current position; Receiving a frame image signal of a current frame image through the display module, generating a data signal according to the frame image signal, and controlling a pixel driving circuit according to a central vision area of ​​a user, so that the pixel unit displays the current frame image based on the data signal; Among them, when the pixel units display the current frame image based on the data signal, the light-emitting time periods of the pixel units in the first display area including the central vision area are the same, and the light-emitting time periods of the remaining pixel units are different from the light-emitting time periods of the pixel units in the first display area; and the start light-emitting time of the pixel unit that emits light earliest when the current frame image is displayed is later than the end light-emitting time of the pixel unit that emits light latest when the previous frame image is displayed.

11. A computer program product, characterized in that The computer program product comprises a computer program, and when the computer program is executed by a processor, the steps of the display method according to claim 10 are implemented.

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