WO2020052163A1

WO2020052163A1 - Pixel compensation-based image display method and device, display device and medium

Info

Publication number: WO2020052163A1
Application number: PCT/CN2018/123806
Authority: WO
Inventors: 徐遥令; 李坚; 王俊生
Original assignee: 深圳创维－Rgb电子有限公司
Priority date: 2018-09-10
Filing date: 2018-12-26
Publication date: 2020-03-19
Also published as: CN108877678A

Abstract

A pixel compensation-based image display method and device, display device and medium. The method comprises: decoding a received image signal to obtain a gray scale value of a plurality of pixels to be displayed; determining a gray scale compensation value of each of the pixels to be displayed in the plurality of pixels to be displayed according to a preset pixel compensation table that corresponds to the gray scale value thereof, and compensating the each pixel to be displayed by means of the gray scale compensation value; and by using a voltage corresponding to a target pixel value of the each pixel to be displayed that is obtained by the compensation processing as a target driving voltage of the each pixel to be displayed, using the target driving voltage of the each pixel to be displayed to drive a corresponding pixel unit in a display screen to illuminate according to the positional correspondence between the plurality of pixels to be displayed and a plurality of pixel units in the display screen so as to display an image.

Description

Image compensation method, device, display device and medium based on pixel compensation

This application claims priority from a Chinese patent application filed with the Chinese Patent Office on September 10, 2018 with application number 201811050275.0, the entire contents of which are incorporated herein by reference.

Technical field

Embodiments of the present application relate to the field of image processing technologies, for example, to an image display method, device, display device, and medium based on pixel compensation.

Background technique

Active-matrix organic light-emitting diode (AMOLED) is referred to as OLED in this application. Due to its low power consumption, self-luminescence, good image quality, and fast response, it is currently developing and applied rapidly. . Low temperature polysilicon thin film (Thin-Film, Thin-Film, Transistor, LTPS, TFT) and oxide thin film transistor (Oxide) TFT have higher mobility and more stable characteristics. They are widely used in display devices with OLED displays. The scale is used to control the driving current of the OLED.

At present, whether using LTPS TFT or Oxide TFT, the threshold voltage, mobility and other electrical parameters of TFTs corresponding to multiple OLED pixels in OLED display devices are not completely the same. When affected by temperature, they pass under the same driving voltage. There may be differences in the current of the OLED pixels, which may cause a difference in brightness between different OLED pixels, resulting in a difference in brightness in the OLED display, that is, unevenness in brightness, which seriously affects the display quality of the display device.

In order to avoid brightness unevenness, the current compensation circuit is often used to compensate the TFT control voltage through internal compensation circuits, that is, sub-circuits based on pixel TFTs, to compensate for the OLED pixel drive current, such as 4T1C, 5T2C and other circuits. Within the range can effectively improve the uneven brightness of the display. However, the above-mentioned circuit structure is relatively complicated, and has a slow response speed, small compensation range, high cost, and difficulty in integration on the substrate, which affects the light-emitting area of the OLED.

Summary of the Invention

The following is an overview of the topics detailed in this article. This summary is not intended to limit the scope of protection of the claims.

The embodiments of the present application provide an image display method, device, display device, and medium based on pixel compensation, which effectively avoids the influence of uneven display brightness of pixels on the display screen to the image display, and greatly improves the image display quality.

In a first aspect, an embodiment of the present application provides an image display method based on pixel compensation. The method includes: decoding an image signal received by a display device to obtain grayscale values of multiple pixels to be displayed; For each to-be-displayed pixel, the gray-scale compensation value of each to-be-displayed pixel is determined according to a preset pixel compensation table corresponding to the gray-scale value of each to-be-displayed pixel, and The grayscale compensation value compensates each pixel to be displayed; and a voltage corresponding to a target pixel value of each of the pixels to be displayed obtained after the compensation process is used as a target driving voltage of each of the pixels to be displayed According to the position correspondence between the plurality of pixels to be displayed and the plurality of pixel units in the display screen, the target pixel voltage of each of the pixels to be displayed is used to drive the corresponding pixel unit in the display screen to light up for image display.

In an embodiment, the driving test signal is obtained after compensating each pixel to be displayed with a preset gray level value.

In an embodiment, if the number of pixels to be displayed in the received image signal is different from the number of pixel units in the display screen, the image signal is processed such that the processed The number of pixels to be displayed is the same as the number of pixel units in the display screen.

In a second aspect, an embodiment of the present application further provides an image display device based on pixel compensation. The device includes: an image decoding module configured to decode an image signal received by a display device to obtain gray values of a plurality of pixels to be displayed. Level value; an image compensation module, configured to determine, for each to-be-displayed pixel of the plurality of pixels to be displayed, each of the to-be-displayed pixels according to a preset pixel compensation table corresponding to a gray-scale value of the to-be-displayed pixel. Displaying a grayscale compensation value of a pixel, and compensating each of the pixels to be displayed by using the grayscale compensation value; the image display module is configured to set a target pixel of each of the pixels to be displayed after the compensation process is obtained The voltage corresponding to the value is used as the target driving voltage of each of the pixels to be displayed, and according to the position correspondence between the plurality of pixels to be displayed and the plurality of pixel units in the display screen, the target driving of each of the pixels to be displayed is used The corresponding pixel unit in the voltage-driven display screen lights up for image display.

In an embodiment, the image display module further includes a pixel number adjustment unit; when the number of pixels to be displayed is different from the number of pixel units in the display screen in the received image signal The pixel number adjustment unit is configured to process the image signal, so that the number of pixels to be displayed after processing is the same as the number of pixel units in the display screen.

According to a third aspect, an embodiment of the present application further provides a display device including: at least one processor; a storage device configured to store at least one program, and when the at least one program is executed by the at least one processor , So that the at least one processor implements an image display method based on pixel compensation provided by any embodiment of the present application.

In a fourth aspect, an embodiment of the present application further provides a computer-readable storage medium having stored thereon a computer program that, when executed by a processor, implements an image display method based on pixel compensation provided by any embodiment of the present application.

After reading and understanding the drawings and detailed description, other aspects can be understood.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1a is a flowchart of a method for generating a preset pixel compensation table; FIG.

FIG. 1b is a schematic block diagram of generating a preset pixel compensation table; FIG.

FIG. 2 is a flowchart of a pixel compensation-based image display method according to Embodiment 1 of the present application; FIG.

FIG. 3a is a schematic diagram of a display screen pixel provided in Embodiment 1 of the present application; FIG.

FIG. 3b is a schematic diagram of a pixel to be compensated according to the first embodiment of the present application; FIG.

3c is a schematic diagram of a preset pixel compensation table provided in Embodiment 1 of the present application;

FIG. 4 is a structural block diagram of a pixel compensation device for a display device according to a second embodiment of the present application; FIG.

FIG. 5 is a schematic structural diagram of a display device provided in Embodiment 3 of the present application.

detailed description

The following describes the present application in detail with reference to the drawings and embodiments. It can be understood that, the embodiments described herein are only used to explain the present application, rather than limiting the present application. In addition, it should be noted that, for convenience of description, only some parts related to the present application are shown in the drawings instead of the entire structure.

The method of generating and using a preset pixel compensation table that is required to be used in the embodiments of the present application will be described in detail below first.

The preset pixel compensation table is generated before the display device leaves the factory. Each grayscale value corresponds to a preset pixel compensation table. Each preset pixel compensation table records the same number of grayscale pixel compensations as the number of pixel units on the display screen. Value, multiple preset pixel compensation tables form a set of preset pixel compensation tables. FIG. 1a is a flowchart of a method for generating a preset pixel compensation table. As shown in FIG. 1a, the preset pixel compensation table provided by the embodiment of the present application may be generated through steps S110 to S130.

In step S110, a driving test signal is generated to drive each pixel unit in the display screen to emit light.

The driving test signal is obtained by the image compensation module after compensating a plurality of pixels to be displayed in a set grayscale signal. In the test stage before the display device leaves the factory, the image data to be displayed corresponding to multiple pixel units may be image data after the same grayscale signal is decoded by the image decoding module, that is, the light-emitting effect corresponding to multiple pixel units may be for the same grayscale. Effect of first-order signal.

FIG. 1b is a schematic block diagram of generating a preset pixel compensation table. As shown in FIG. 1b, the test sequence generating module generates a grayscale signal, that is, an image signal whose grayscale value is a preset value. When testing the lighting effect, you can choose different grayscale signals for testing each time. For any grayscale signal A1, the test sequence generation module outputs the grayscale signal to the image decoding module, and outputs the reference brightness value A1_Bri_ref to the image compensation module. The image decoding module decodes the grayscale signal and outputs the corresponding display data A1_Vdata to the image compensation module. The display data A1_Vdata is composed of a plurality of pixels A1_Vdata_ij (i is 1, 2, ..., M, and j is 1, 2, ..., N).

The image compensation module receives the display data A1_Vdata and the reference brightness value A1_Bri_ref, and reads the preset pixel compensation table A1_LUT corresponding to the grayscale value A1 from the preset pixel compensation table set, that is, the table set generation module. A1_LUT consists of multiple pixels to be displayed. The corresponding initial grayscale compensation value A1_LUT_ij is composed. The initial grayscale compensation value can be set according to actual needs.

The output driving data A1_VCdata can be obtained by compensating each pixel to be displayed in the display data A1_Vdata by using the initial grayscale compensation value in the A1_LUT.

Among them, using the initial grayscale compensation value to compensate each pixel to be displayed in the display data A1_Vdata may be to add the grayscale compensation value A1_LUT_ij of each pixel in A1_LUT to the display data A1_Vdata_ij of each pixel in A1_Vdata, that is, A1_LUT_ij + A1_Vdata_ij = A1_VCdata_ij to obtain the driving data corresponding to the pixel unit with coordinates (i, j), that is, the driving voltage A1_VCdata_ij.

The driving data A1_VCdata is composed of driving data A1_VCdata_ij for each pixel to be displayed. The driving test signal in this embodiment can be obtained for each driving data through digital-to-analog conversion. After the driving test signal is generated, the image compensation module can communicate with the column driving module in the display screen. The column driving module receives the driving test signal to drive each pixel unit in the display screen to emit light. In addition, the image compensation module also outputs a signal for controlling. Measurement control signal of the luminance meter.

In step S120, the actual brightness of each pixel is received, and the size of the actual brightness of each pixel and the reference brightness are compared. By adjusting the initial grayscale compensation value in the initial pixel compensation table, the actual brightness is equal to the reference brightness.

First, the function of the preset pixel compensation table in the embodiment of the present application and the reasons for its adjustment are briefly introduced.

Due to the difference in electrical parameters of multiple pixel units in the display screen, each pixel unit is not affected to the same extent by temperature, and the effect of temperature on the pixel unit can be expressed by the luminous brightness of the pixel unit. Therefore, in this embodiment, before the display device leaves the factory, the actual brightness value of each pixel unit in the display screen when displaying the pixels to be displayed with a set gray level value is sequentially detected by a brightness meter, and the actual brightness value is compared with Compare the reference brightness value. If the actual brightness value displayed by a pixel unit is not equal to the reference brightness value, it means that the pixel unit is affected by temperature. At this time, the pixels to be displayed may be compensated by adjusting an initial grayscale compensation value stored in the initial pixel table in advance. The reason for this setting is that when the display pixel unit displays a pixel to be displayed in the image, due to the differences in the properties of the display pixel unit itself, the degree of influence by temperature is also different. In order to ensure the same grayscale value Of the pixels to be displayed have the same luminous effect, the driving voltage of the pixel to be displayed corresponding to the display pixel unit can be adjusted by adjusting the grayscale value of the pixel to be displayed, so as to offset the temperature of the pixel unit of the display. Impact. Since the reference brightness of the pixel unit corresponding to the same grayscale value remains unchanged during the adjustment process, the initial grayscale compensation value in the initial pixel compensation table can be adjusted to make the light emitting effect of the pixel unit reach the light emission corresponding to the reference brightness value. effect. Because the lighting effect corresponding to the reference brightness value meets the preset requirements, for the same grayscale value, the grayscale compensation value corresponding to the pixel unit when the lighting effect is achieved can be used as the target grayscale compensation in the preset grayscale compensation table. value.

In addition, since there are multiple pixel units in the display screen, different pixel units are not affected to the same extent by temperature. Therefore, the grayscale compensation value corresponding to the reference brightness value of each pixel unit can be obtained in the above manner. The coordinate position of each pixel unit in the display screen is correspondingly stored in a preset pixel compensation table. When the display device performs image display after leaving the factory, after using the grayscale compensation value to compensate the pixels to be displayed, the luminance of the pixels to be displayed with the same grayscale value in the display screen can be kept consistent, and the phenomenon of uneven display is avoided. .

The initial grayscale compensation value in the initial pixel compensation table is adjusted as follows: After the TFT in the column driving module receives the control signal in sequence, the corresponding pixel unit in the display screen can emit light. At this time, the brightness meter can detect the actual light-emitting brightness of the light-emitting display unit. By adjusting the position of the brightness meter in turn, the actual brightness value of each pixel unit in the display screen can be obtained.

The actual brightness A1_Bri_11 of the pixel unit P11 in the first row and the first column of the display screen will be described below as an example.

The image compensation module receives the brightness value A1_Bri_11 of the pixel unit P11 measured by the brightness value and compares it with the reference brightness value A1_Bri_ref, and adjusts the initial grayscale compensation value A1_LUT_11 until A1_Bri_11 is equal to A1_Bri_ref, and sets the grayscale at this time The compensation value A1_LUT_11 is written into the A1_LUT table, thereby updating the grayscale compensation value A1_LUT_11 corresponding to the pixel P11 in the A1_LUT table.

In an embodiment, if A1_Bri_11 is equal to the reference brightness value A1_Bri_ref, the grayscale compensation value A1_LUT_11 does not need to be updated.

If A1_Bri_11 is not equal to the reference brightness value A1_Bri_ref, the initial grayscale compensation value A1_LUT_11 is adjusted. For example, when A1_Bri_11 is greater than A1_Bri_ref, the initial grayscale compensation value A1_LUT_11 is adjusted small, so that the driving data A1_VCdata_11 of the pixel P11 becomes smaller, and the corresponding driving test voltage also becomes smaller accordingly.

In step S130, each initial grayscale compensation value is replaced with an adjusted grayscale compensation value, and the adjusted initial pixel compensation table is used as a preset pixel compensation table.

As the initial grayscale compensation value in the preset pixel compensation table is adjusted, the driving data A1_VCdata_11 will also be changed, so that the measured brightness value A1_Bri_11 will also change until the measured brightness value A1_Bri_11 is equal to the reference brightness value A1_Bri_ref, The grayscale compensation value A1_LUT_11 at this time is written into the A1_LUT table. According to the above method, each initial grayscale compensation value in the preset pixel compensation table is sequentially updated. When all the initial grayscale compensation values are updated, the updated initial pixel compensation table is used as the preset pixel compensation table.

It should be noted that the test sequence generation module, image decoding module, image compensation module, and table set generation module involved in the generation of the preset pixel compensation table can be implemented by at least one of software and hardware.

It should also be noted that when the display device displays an image after it leaves the factory, the preset pixel compensation table will not be changed, and each grayscale compensation value determined in the preset pixel compensation table may be used for compensation. The following embodiments will describe in detail a method for displaying an image by a display device in an application process.

Example one

FIG. 2 is a flowchart of a pixel compensation-based image display method provided in Embodiment 1 of the present application. The method may be performed by an image display device based on pixel compensation. The device may be implemented in at least one of software and hardware. The implementation is typically integrated in a display device such as a television. Referring to FIG. 2, the method in this embodiment includes steps S210 to S230.

In step S210, the received image signal is decoded to obtain a grayscale value of each pixel to be displayed.

The first thing that needs to be explained is that the display image of the display needs to be controlled by the driving voltage of the thin-film transistor (Thin-Film Transistor, TFT) of each pixel unit in the display. The pixel unit lights up for image display. Since the number of TFTs corresponds to the number of pixels in the display screen, if the number of pixels in the display screen is M * N, then M * N driving voltages are required to drive M * N TFTs to turn on. Since the present embodiment determines the driving voltage of each TFT by compensating the gray level value of the pixel to be displayed, the number of pixels to be displayed in the image to be displayed in this embodiment needs to be related to The number of pixel units in the display is the same.

Exemplarily, if the number of pixels to be displayed in the received image signal is different from the number of pixel units in the display screen, the image may be converted so that the pixels of the image to be displayed are different from those of the pixel units of the display screen. The number remains the same.

In step S220, for each to-be-displayed pixel of the plurality of to-be-displayed pixels, a gray-scale compensation of each to-be-displayed pixel is determined according to a preset pixel compensation table corresponding to the to-sand- gray value of each to-be-displayed pixel. Value, and each pixel to be displayed is compensated by the grayscale compensation value.

In this embodiment, there is a one-to-one correspondence between the pixels to be displayed in the image and the pixel units in the display screen, and the pixels to be displayed at a certain gray level value in the image have unique corresponding compensation values in the preset pixel compensation table. Therefore, for any preset pixel table, the number of grayscale compensation values recorded therein is also consistent with the number of pixel units in the display screen, and there is a one-to-one correspondence relationship. FIG. 3a is a schematic diagram of a display screen pixel provided in Embodiment 1 of the present application. As shown in FIG. 3a, the display screen has M * N pixels. FIG. 3b is a schematic diagram of a pixel to be compensated provided in Embodiment 1 of the present application, and FIG. 3b illustrates M * N pixels to be compensated Vdata. FIG. 3c is a schematic diagram of a preset pixel compensation table provided in Embodiment 1 of the present application. FIG. 3c shows M * N units, and each unit records a compensation value AK_LUT_ij (i is 1, 2, ... , M, j are 1, 2, ..., N) (K is a grayscale value), a plurality of preset pixel compensation tables (K is 1, 2, ..., Z) shown in FIG. 3c are formed A collection of preset pixel compensation tables.

Because there is a one-to-one correspondence between the preset pixel compensation table and the grayscale value of the pixel to be compensated, the grayscale value of the pixel to be compensated after decoding can be used to determine the corresponding grayscale value from the preset pixel compensation table set. Preset pixel compensation table.

Exemplarily, for any pixel to be compensated, after determining a preset pixel compensation table corresponding to the pixel, the pixel to be displayed may be calculated from the preset pixel compensation pixel table according to the position of the pixel to be displayed corresponding to the pixel unit in the display screen. Find the grayscale compensation value corresponding to the pixel to be displayed. This can be achieved by:

For each to-be-displayed pixel among multiple to-be-displayed pixels, determine a target display position of each to-be-displayed pixel on the display screen, and from a preset pixel compensation table corresponding to the grayscale value of each to-be-displayed pixel, The grayscale compensation value of the target display position is used as the grayscale compensation value of the pixel to be displayed. For example, if the pixel to be displayed needs to be displayed by the first pixel unit in the display screen, the compensation value of the pixel to be displayed can be obtained from the first pixel in the preset pixel compensation table corresponding to the grayscale value of the pixel to be displayed. Found in a unit.

Exemplarily, after the compensation value is determined, the pixel to be displayed is compensated by the grayscale compensation value, and the compensation value of the pixel to be displayed and the grayscale value of the pixel to be displayed may be added.

In an embodiment, if the grayscale value of a certain pixel Vdata_ij_K among the M * N pixels to be displayed Vdata_ obtained after decoding the image signal is K, the compensation may be performed on the pixel to be displayed. Query the preset pixel compensation table AK_LUT corresponding to the grayscale value K from the LUT table set, and obtain the grayscale compensation value AK_LUT_ij. The way to use AK_LUT_ij to compensate the pixel to be displayed is:

VCdata_ij = AK_LUT_ij + Vdata_ij.

For any one of the M * N pixels to be displayed, M * N pixel driving data can be obtained by using the above method, and the M * N pixel driving data can obtain M * N target driving through digital-to-analog conversion. The voltage corresponds to M * N pixel units in the display screen.

In step S230, the voltage corresponding to the target pixel value of each pixel to be displayed obtained after the compensation process is used as the target driving voltage of each of the pixels to be displayed. The corresponding position of the pixel unit is driven by using the target driving voltage of each of the pixels to be displayed to light up the corresponding pixel unit in the display screen for image display.

Among them, since the grayscale value has a linear relationship with the driving current of the pixel unit for displaying the grayscale value in the display screen, there is also a certain positive proportional relationship between the grayscale value and the driving voltage, that is, the grayscale value The larger the driving voltage is. Therefore, after the gray level value of the pixel to be displayed is adjusted, the driving voltage corresponding to the pixel unit of the display screen is also adjusted accordingly. In an embodiment, if each pixel to be displayed is added to a corresponding grayscale compensation value, the pixel value obtained after the addition process is used as a target pixel value for each pixel to be displayed, and the target pixel is The voltage corresponding to the value is used as a target driving voltage for each of the pixels to be displayed.

Since each pixel unit in the display screen has its own corresponding thin film transistor, the target driving voltage of each pixel to be displayed can control the thin film transistor of the corresponding pixel unit in the display screen to turn on to generate a driving current, which is used to drive the display screen. The corresponding pixel unit in is illuminated for image display.

In the technical solution of this embodiment, each pixel to be displayed in the image is compensated by using each pixel compensation value in the preset pixel compensation table, and each pixel unit in the display screen can be adjusted accordingly according to the pixel value obtained after the compensation. The driving voltage of the display unit keeps the same brightness level of the pixels to be displayed in the display screen with the same gray level value, which avoids the uneven display caused by the pixel unit in the display screen due to different attributes or temperature. The display effect of the image.

Example two

FIG. 4 is a structural block diagram of a pixel compensation device for a display device provided in Embodiment 2 of the present application. As shown in FIG. 4, the device includes an image decoding module 310, an image compensation module 320, and an image display module 330.

The image decoding module 310 is configured to decode an image signal received by the display device to obtain a grayscale value of each pixel to be displayed.

The image compensation module 320 is configured to determine, for each to-be-displayed pixel in the plurality of to-be-displayed pixels, a gray scale value of each to-be-displayed pixel according to a preset pixel compensation table corresponding to the gray-scale value of each to-be-displayed pixel. Level compensation value, and each pixel to be displayed is compensated by the grayscale compensation value.

The image display module 330 is configured to use the voltage corresponding to the target pixel value of each pixel to be displayed obtained after the compensation process as the target driving voltage of each pixel to be displayed, according to a plurality of pixels to be displayed and a plurality of pixels on the display screen. The corresponding position of the pixel unit is driven by using the target driving voltage of each pixel to be displayed to light up the corresponding pixel unit in the display screen for image display.

In the technical solution of this embodiment, each pixel to be displayed in the image is compensated by using each pixel compensation value in the preset pixel compensation table. According to the compensated pixel value, each pixel unit in the display screen can be adjusted accordingly. The driving voltage keeps the same brightness of the pixels to be displayed on the display screen with the same gray level value, avoiding the uneven display caused by the pixel unit in the display screen due to different attributes or temperature, which improves the image Display effect.

Based on the above embodiment, the image compensation module includes: a target display position determining unit configured to determine, for each pixel to be displayed, a target display position of each pixel to be displayed on the display screen; a grayscale compensation value The determining unit is configured to use the grayscale compensation value of the target display position as the grayscale compensation value of the pixel to be displayed from the preset pixel compensation table corresponding to the grayscale value of the pixel to be displayed; the pixel compensation unit, It is set to compensate the pixel to be displayed by the grayscale compensation value.

Based on the above embodiment, the image compensation module is configured to: for each to-be-displayed pixel among a plurality of to-be-displayed pixels, according to a preset pixel compensation table corresponding to a grayscale value of each to-be-displayed pixel, Determine the grayscale compensation value of each pixel to be displayed, and add the grayscale compensation value of each pixel to be displayed and the grayscale value of each pixel to be displayed.

Based on the above embodiment, the image display module is configured to use the pixel value obtained after the addition processing as a target pixel value for each pixel to be displayed, and use the voltage corresponding to the target pixel value as each The target driving voltage of the pixel to be displayed; the thin film transistor of the corresponding pixel unit in the display screen is controlled to be turned on by the target driving voltage of each pixel to be displayed to generate a driving current, and the driving current is used to drive the corresponding pixel unit in the display screen to emit light For image display.

Based on the above embodiment, the preset pixel compensation table is obtained by the following modules: a driving light emitting module configured to generate a driving test signal to drive each pixel unit in the display screen to emit light; a comparison module configured to receive each pixel unit The actual brightness of each pixel, and compare the actual brightness of each pixel with the reference brightness, and adjust the initial grayscale compensation value in the initial pixel compensation table to make the actual brightness equal to the reference brightness; update the module, set To replace each initial grayscale compensation value with an adjusted grayscale compensation value, and use the adjusted initial pixel compensation table as a preset pixel compensation table.

The pixel compensation-based image display device provided by the embodiment of the present application can execute the pixel compensation-based image display method provided by any embodiment of the present application, and has corresponding function modules and beneficial effects of the execution method. For technical details not described in detail in the foregoing embodiments, reference may be made to a pixel compensation-based image display method provided in any embodiment of the present application.

Example three

FIG. 5 is a schematic structural diagram of a display device provided in Embodiment 3 of the present application. FIG. 5 shows a block diagram of an exemplary display device 12 suitable for use in implementing embodiments of the present application. The display device 12 shown in FIG. 5 is merely an example, and should not impose any limitation on the functions and use scope of the embodiments of the present application.

As shown in FIG. 5, the display device 12 is expressed in the form of a general-purpose computing device. The components of the display device 12 may include, but are not limited to, at least one processor or processing unit 16, a system memory 28, and a bus 18 connecting different system components (including the system memory 28 and the processing unit 16).

The bus 18 represents at least one of several types of bus structures, including a memory bus or a memory controller, a peripheral bus, a graphics acceleration port, a processor, or a local area bus using any of a variety of bus structures. By way of example, these architectures include, but are not limited to, the Industry Standard Architecture (ISA) bus, the Micro Channel Architecture (MAC) bus, the enhanced ISA bus, the Video Electronics Standards Association (VESA) local area bus, and peripheral component interconnects ( PCI) bus.

The display device 12 typically includes a variety of computer system-readable media. These media can be any available media that can be accessed by the display device 12, including volatile and non-volatile media, removable and non-removable media.

The system memory 28 may include a computer system readable medium in the form of volatile memory, such as at least one of a random access memory (RAM) 30 and a cache memory 32. The display device 12 may include other removable / non-removable, volatile / nonvolatile computer system storage media. By way of example only, the storage system 34 may be used to read and write non-removable, non-volatile magnetic media (not shown in Fig. 5 and is commonly referred to as a "hard drive"). Although not shown in FIG. 5, a disk drive for reading and writing to a removable non-volatile disk (such as a "floppy disk"), and a removable non-volatile optical disk (such as a CD-ROM, DVD-ROM, etc.) may be provided. Or other optical media). In these cases, each drive can be connected to the bus 18 via at least one data medium interface. The memory 28 may include at least one program product having a set (eg, at least one) of program modules configured to perform the functions of each embodiment of the present application.

A program / utility tool 40 having a set (at least one) of program modules 42 may be stored in, for example, the memory 28. Such program modules 42 include, but are not limited to, an operating system, at least one application program, other program modules, and program data. These Each or some combination of examples may include an implementation of a network environment. The program module 42 generally performs at least one of functions and methods in the embodiments described in this application.

The display device 12 may also communicate with at least one external device 14 (such as a keyboard, pointing device, display 24, etc.), may also communicate with at least one device that enables a user to interact with the display device 12, and / or with the display device 12 Any device (such as a network card, modem, etc.) that can communicate with at least one other computing device. This communication can be performed through an input / output (I / O) interface 22. Moreover, the display device 12 may also communicate with at least one network, such as a local area network (LAN), a wide area network (WAN), and a public network (such as the Internet), through the network adapter 20. As shown, the network adapter 20 communicates with other modules of the display device 12 through the bus 18. It should be understood that although not shown in the figure, at least one of other hardware modules and software modules may be used in combination with the display device 12, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID Systems, tape drives, and data backup storage systems.

The processing unit 16 executes a variety of functional applications and data processing by running a program stored in the system memory 28, for example, to implement pixel compensation-based image display provided by any embodiment of the present application. The method includes: receiving a received image The signal is decoded to obtain the grayscale value of each pixel to be displayed; for each of the multiple pixels to be displayed, each pixel to be displayed is determined according to a preset pixel compensation table corresponding to the grayscale value of each pixel to be displayed. Grayscale compensation value of each pixel to be displayed, and each pixel to be displayed is compensated by the grayscale compensation value; the voltage corresponding to the target pixel value of each pixel to be displayed obtained after the compensation process is used as each to be displayed The target driving voltage of a pixel is driven by the target driving voltage of each pixel to be displayed to drive the corresponding pixel unit in the display according to the position correspondence between multiple pixels to be displayed and multiple pixel units in the display for image display. .

Embodiment 4

Embodiment 4 of the present application further provides a computer-readable storage medium on which a computer program is stored. When the program is executed by a processor, the pixel compensation-based image display provided by any embodiment of the present application is implemented. The method includes: Decode the received image signal to obtain the grayscale value of each pixel to be displayed; for each of the multiple pixels to be displayed, a preset pixel corresponding to the grayscale value of each pixel to be displayed The compensation table determines the grayscale compensation value of each pixel to be displayed, and compensates each pixel to be displayed by the grayscale compensation value; the voltage corresponding to the target pixel value of each pixel to be displayed obtained after the compensation process As the target driving voltage of each pixel to be displayed, according to the position correspondence between multiple pixels to be displayed and multiple pixel units in the display screen, the target pixel drive voltage of each pixel to be displayed is used to drive the corresponding pixel unit in the display screen to light For image display.

The computer storage medium in the embodiment of the present application may adopt any combination of at least one computer-readable medium. The computer-readable medium may be a computer-readable signal medium or a computer-readable storage medium. The computer-readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples (non-exhaustive list) of computer-readable storage media include: electrical connections with at least one wire, portable computer disks, hard disks, random access memory (, RAM), read-only memory (, ROM), Erasable programmable read-only memory (EPROM) or flash memory, optical fiber, portable compact disk read-only memory (CD-ROM), optical storage device, magnetic storage device, or any suitable combination of the foregoing. In this document, a computer-readable storage medium may be any tangible medium that contains or stores a program that can be used by or in combination with an instruction execution system, apparatus, or device.

The computer-readable signal medium may include a data signal in baseband or propagated as part of a carrier wave, which carries a computer-readable program code. Such a propagated data signal may take many forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the foregoing. The computer-readable signal medium may also be any computer-readable medium other than a computer-readable storage medium, and the computer-readable medium may send, propagate, or transmit a program for use by or in connection with an instruction execution system, apparatus, or device .

Program code embodied on a computer-readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.

The computer program code for performing the operations of the present application may be written in at least one programming language or a combination thereof, the programming language including an object-oriented programming language such as Java, Smalltalk, C ++, and also conventional procedural Programming language-such as "C" or similar programming language. The program code can be executed entirely on the user's computer, partly on the user's computer, as an independent software package, partly on the user's computer, partly on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer can be connected to the user's computer through any kind of network, including a local area network (LAN) or wide area network (WAN), or it can be connected to an external computer (such as through an Internet service provider Internet connection).

Claims

An image display method based on pixel compensation includes:

Decode the received image signal to obtain the grayscale values of multiple pixels to be displayed;

For each of the plurality of pixels to be displayed, a grayscale compensation value of each pixel to be displayed is determined according to a preset pixel compensation table corresponding to the grayscale value of each of the pixels to be displayed. And compensate each of the pixels to be displayed by using the grayscale compensation value;

The voltage corresponding to the target pixel value of each of the pixels to be displayed after the compensation process is used as the target driving voltage of each of the pixels to be displayed, and according to the plurality of pixels to be displayed and a plurality of pixels in the display screen The corresponding position of the units is driven by using the target driving voltage of each of the pixels to be displayed to light up the corresponding pixel unit in the display screen for image display.
The method according to claim 1, wherein, for each of the plurality of pixels to be displayed, according to a preset pixel compensation table corresponding to a grayscale value of each of the pixels to be displayed, Determining a grayscale compensation value of the pixel to be displayed includes:

Determining, for each of the plurality of pixels to be displayed, a target display position of each of the pixels to be displayed on the display screen;

From the preset pixel compensation table corresponding to the grayscale value of each pixel to be displayed, the grayscale compensation value of the target display position is used as the grayscale compensation value of the pixel to be displayed.
The method according to claim 2, wherein the compensating the pixel to be displayed by the grayscale compensation value comprises:

Adding the grayscale compensation value of the pixel to be displayed and the grayscale value of the pixel to be displayed.
The method according to claim 3, wherein a voltage corresponding to a target pixel value of each of the pixels to be displayed obtained after the compensation process is used as a target driving voltage of each of the pixels to be displayed, The position correspondence between the pixel to be displayed and a plurality of pixel units in the display screen is described. Using a target driving voltage of each of the pixels to be displayed to drive the corresponding pixel unit in the display screen to light up for image display includes:

Using the pixel value obtained after the addition process as a target pixel value of each of the pixels to be displayed, and using the voltage corresponding to the target pixel value as the target driving voltage of each of the pixels to be displayed;

A thin film transistor of a corresponding pixel unit in a display screen is controlled to be turned on by the target driving voltage of each of the pixels to be displayed to generate a driving current, and the driving current is used to drive the corresponding pixel unit in the display screen to emit light, so as to Perform image display.
The method according to claim 1, wherein the preset pixel compensation table is obtained by the following steps:

Generating a driving test signal to drive each pixel unit in the display screen to emit light;

Receiving the actual brightness of each pixel and comparing the actual brightness of each pixel with the reference brightness, and adjusting the initial grayscale compensation value in the initial pixel compensation table to make the actual brightness equal to the reference brightness;

Replace each initial grayscale compensation value with the adjusted grayscale compensation value, and use the adjusted initial pixel compensation table as a preset pixel compensation table.
The method according to claim 5, wherein the generating a driving signal comprises: obtaining the driving test signal after compensating each of the pixels to be displayed having a preset grayscale value.
The method according to claim 1, if the number of pixels to be displayed in the received image signal is different from the number of pixel units in the display screen, the image signal is processed so that The number of processed pixels to be displayed is the same as the number of pixel units in the display screen.
An image display device based on pixel compensation includes:

An image decoding module configured to decode an image signal received by a display device to obtain grayscale values of a plurality of pixels to be displayed;

An image compensation module configured to determine, for each to-be-displayed pixel of the plurality of to-be-displayed pixels, each of the to-be-displayed pixels according to a preset pixel compensation table corresponding to a grayscale value of each of the to-be-displayed pixels A grayscale compensation value of a pixel, and compensating each pixel to be displayed by using the grayscale compensation value;

The image display module is configured to use a voltage corresponding to a target pixel value of each of the pixels to be displayed after the compensation process as a target driving voltage of each of the pixels to be displayed, and according to the plurality of pixels to be displayed and The corresponding position of the multiple pixel units in the display screen uses the target driving voltage of each of the pixels to be displayed to drive the corresponding pixel units in the display screen to light up for image display.
The apparatus according to claim 8, wherein the image compensation module is configured to:

For each of the plurality of pixels to be displayed, the gray scale of each of the pixels to be displayed is determined according to a preset pixel compensation table corresponding to a gray level value of each of the pixels to be displayed. A compensation value, adding a grayscale compensation value of each pixel to be displayed and a grayscale value of each pixel to be displayed.
The apparatus according to claim 9, wherein the image display module is configured to:

Using the pixel value obtained after the addition processing as a target pixel value of each of the pixels to be displayed, and using the voltage corresponding to the target pixel value as a target driving voltage of each of the pixels to be displayed;

A thin film transistor of a corresponding pixel unit in a display screen is controlled to be turned on by the target driving voltage of each of the pixels to be displayed to generate a driving current, and the driving current is used to drive the corresponding pixel unit in the display screen to emit light, so as to Perform image display.
The apparatus according to claim 8, wherein the image compensation module comprises: a target display position determination unit, a grayscale compensation value determination unit, and a pixel compensation unit;

The target display position determining unit is configured to determine, for each of the pixels to be displayed, a target display position of each of the pixels to be displayed on a display screen;

The grayscale compensation value determining unit is configured to set the grayscale compensation value of the target display position as the each pixel from a preset pixel compensation table corresponding to the grayscale value of each pixel to be displayed. Grayscale compensation value of display pixels;

The pixel compensation unit is configured to compensate the pixel to be displayed by using the grayscale compensation value.
The device according to claim 8, wherein the preset pixel compensation table is obtained by the following modules:

A driving light emitting module configured to generate a driving test signal to drive each pixel unit in the display screen to emit light;

The comparison module is configured to receive the actual brightness of each pixel, and compare the size of the actual brightness of each pixel with the reference brightness, and adjust the initial grayscale compensation value in the initial pixel compensation table to make the actual brightness and the reference Equal brightness

The update module is configured to replace each initial grayscale compensation value with an adjusted grayscale compensation value, and use the adjusted initial pixel compensation table as a preset pixel compensation table.
The device according to claim 8, wherein the image display module further comprises a pixel number adjustment unit; in the received image signal, the number of pixels to be displayed and the number of pixel units in the display screen When the numbers are different, the pixel number adjustment unit is configured to process the image signal so that the number of pixels to be displayed after processing is the same as the number of pixel units in the display screen.
A display device includes:

At least one processor;

A storage device configured to store at least one program,

When the at least one program is executed by the at least one processor, the at least one processor implements the pixel compensation-based image display method according to any one of claims 1-7.
A computer-readable storage medium having stored thereon a computer program that, when executed by a processor, implements an image display method based on pixel compensation according to any one of claims 1-7.