CN116504169B - Display apparatus - Google Patents
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- CN116504169B CN116504169B CN202310761654.5A CN202310761654A CN116504169B CN 116504169 B CN116504169 B CN 116504169B CN 202310761654 A CN202310761654 A CN 202310761654A CN 116504169 B CN116504169 B CN 116504169B
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- 230000002159 abnormal effect Effects 0.000 claims abstract description 199
- 238000012545 processing Methods 0.000 claims abstract description 32
- 230000003287 optical effect Effects 0.000 claims abstract description 8
- 238000012216 screening Methods 0.000 claims description 36
- 238000004020 luminiscence type Methods 0.000 claims description 30
- 238000001914 filtration Methods 0.000 claims description 17
- 230000005856 abnormality Effects 0.000 claims description 11
- 238000010586 diagram Methods 0.000 description 8
- 238000004891 communication Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 206010027146 Melanoderma Diseases 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
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- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Control Of El Displays (AREA)
Abstract
The invention discloses a display device, comprising: the display device comprises a first display chip, a second display chip, a data processing unit and an optical path unit, wherein the data processing unit is used for receiving initial image data, processing the initial image data into first image data and second image data, and respectively sending the first image data and the second image data to the first display chip and the second display chip; the first image data and the data corresponding to the abnormal light emitting position of the first display chip are non-light emitting data, and the data corresponding to the rest positions are the same as the initial image data; the second image data is opposite to the first image data; the light path unit is used for exposing or projecting corresponding pixels of the first display chip and the second display chip at the same position.
Description
Technical Field
The invention relates to the technical field of display, in particular to display equipment.
Background
The display chip, especially the micro display chip, because of reasons such as immature technology, the pixel array can have random luminous anomaly, and the pixel of luminous anomaly department can't give out light or luminous efficiency is great with other pixels deviation, to user's impression, can find that some pixel is black spot always or give out light and dark, bright or the off-color to reduce user's use experience. Because the abnormal light-emitting pixels cannot emit light or the light does not meet the conditions, the application scene of exposure or projection is difficult to meet, the yield requirement of the display chip is high, and the cost of the display chip is increased.
Disclosure of Invention
In view of the above, the embodiment of the invention provides a display device to solve the technical problem of abnormal light emission of the pixel array of the display device in the prior art.
To this end, an embodiment of the present invention provides a display apparatus including:
a first display chip;
a second display chip having the same pixel resolution as the first display chip, the second display chip having a light emission abnormality position different from that of the first display chip;
the data processing unit is used for receiving initial image data, processing the initial image data into first image data and second image data, sending the first image data to the first display chip and sending the second image data to the second display chip; the first image data and the data corresponding to the abnormal light emitting position of the first display chip are non-light emitting data, and the data corresponding to the rest positions are the same as the initial image data; the data corresponding to the second image data and the abnormal light emitting position of the first display chip are the same as the initial image data, and the data corresponding to the rest positions are non-light emitting data;
and the optical path unit is used for exposing or projecting corresponding pixels of the first display chip and the second display chip at the same position.
Optionally, the initial image data comprises a plurality of initial image data frames, and the data processing unit comprises a filter program for:
receiving the initial image data frame;
setting data corresponding to the abnormal light emitting position of the first display chip in the initial image data frame to 0 to obtain an image data frame as the first image data frame;
setting data, except for a light-emitting abnormal position corresponding to the first display chip, in the initial image data frame to 0 to obtain an image data frame as the second image data frame;
and synchronously transmitting the first image data frame and the second image data frame to the first display chip and the second display chip respectively.
Optionally, the initial image data includes a plurality of initial image data frames, and the data processing unit includes a first screening unit, a second screening unit, and a storage unit, where the storage unit is configured to store abnormal light emission position information of the first display chip;
the first screening unit is used for acquiring the initial image data frame and the abnormal light-emitting position information of the first display chip, and enabling data, except the abnormal light-emitting position corresponding to the first display chip, in the initial image data frame to pass through so as to obtain the first image data frame;
the second screening unit is used for acquiring the initial image data frame and the abnormal light-emitting position information of the first display chip, and enabling data corresponding to the abnormal light-emitting position of the first display chip in the initial image data frame to pass through so as to obtain the second image data frame;
the first screening unit and the second screening unit are further configured to transmit the first image data frame and the second image data frame to the first display chip and the second display chip, respectively, in synchronization.
Optionally, the first screening unit is configured to:
acquiring the initial image data frame and acquiring position information of each data in the initial image data frame;
judging whether the position information of each data in the initial image data frame is the same as the abnormal luminous position information of the first display chip;
setting 0 the same data as the abnormal light emitting position information of the first display chip, and keeping unchanged the data different from the abnormal light emitting position information of the first display chip; and is also provided with
The second screening unit is used for:
acquiring the initial image data frame and acquiring position information of each data in the initial image data frame;
judging whether the position information of each data in the initial image data frame is the same as the abnormal luminous position information of the first display chip;
setting data different from the abnormal light emitting position information of the first display chip to 0, and keeping the same data as the abnormal light emitting position information of the first display chip unchanged.
Optionally, the initial image data includes a plurality of initial image data frames, and the data processing unit includes a filtering unit and a storage unit, where the storage unit is configured to store abnormal light emission position information of the first display chip; the screening unit is used for:
acquiring the initial image data frame and the abnormal luminous position information of the first display chip;
judging whether the position information of each data in the initial image data frame is the same as the abnormal luminous position information of the first display chip;
when the position information is the same, 0 is sent to the first display chip, and the data with the same position information is synchronously sent to the second display chip;
and when the position information is different, sending the data with the different position information to the first display chip, and synchronously sending 0 to the second display chip.
Optionally, the number of abnormal light emitting pixels of the first display chip is smaller than the number of abnormal light emitting pixels of the second display chip.
Optionally, the memory unit includes a plurality of memory blocks arranged in sequence, wherein
The first storage block is used for storing row information or column information of a first luminescence abnormal pixel, the second storage block is used for storing column information or row information of the first luminescence abnormal pixel, when other luminescence abnormal pixels exist in the row where the first luminescence abnormal pixel is located, the subsequent storage block is used for sequentially storing column information of all other luminescence abnormal pixels which are in the same row with the first luminescence abnormal pixel respectively, and the subsequent storage block is used for storing end information of the row where the first luminescence abnormal pixel is located;
and the subsequent storage block is used for storing the position information of the rest abnormal luminous pixels according to the rule until the position information of all abnormal luminous pixels of the first display chip is stored.
Optionally, when no other light emission abnormal pixel exists in the line where the first light emission abnormal pixel is located, the latter storage block is used for storing end information of the line where the first light emission abnormal pixel is located.
Optionally, the memory unit includes a plurality of memory blocks arranged in sequence, wherein
The first storage block is used for storing column information or row information of a first luminescence abnormal pixel, the second storage block is used for storing row information or row information of the first luminescence abnormal pixel, when other luminescence abnormal pixels exist in the row of the first luminescence abnormal pixel, the subsequent storage block is used for sequentially storing row information of all other luminescence abnormal pixels which are in the same row with the first luminescence abnormal pixel respectively, and the subsequent storage block is used for storing end information of the row of the first luminescence abnormal pixel;
and the subsequent storage block is used for storing the position information of the rest abnormal luminous pixels according to the rule until the position information of all abnormal luminous pixels of the first display chip is stored.
Optionally, bits occupied by each of the memory blocks are determined by pixel resolution of the display chip.
In the display device of the embodiment of the invention, the first display chip emits light according to the first image data, and the second display chip emits light according to the second image data, and as the data corresponding to the abnormal light emitting position of the first display chip is non-light emitting data, the pixel points with abnormal light emitting of the first display chip are avoided; and the second display chip emits light only corresponding to the pixels of the abnormal light emitting position of the first display chip, because the abnormal light emitting position of the second display chip is different from the abnormal light emitting position of the first display chip, the pixels of the abnormal light emitting of the second display chip are avoided, and because the corresponding pixels of the first display chip and the second display chip are exposed or projected at the same position, the normal light emitting pixels of the second display chip compensate the abnormal light emitting pixels of the first display chip, so that the display device can normally display as a whole.
Drawings
The features and advantages of the present invention will be more clearly understood by reference to the accompanying drawings, which are illustrative and should not be construed as limiting the invention in any way, in which:
fig. 1 shows a schematic diagram of the working principle of a display device according to an embodiment of the invention;
fig. 2 shows a schematic diagram of first image data and second image data in a display device according to an embodiment of the invention;
FIG. 3 shows a schematic diagram of a data processing unit in a display device implemented in software according to an embodiment of the invention;
FIG. 4 shows a schematic diagram of an alternative implementation of a data processing unit in a display device implemented in hardware according to an embodiment of the invention;
fig. 5 shows a schematic diagram of another alternative implementation of the data processing unit in the display device according to an embodiment of the invention by means of hardware.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to fall within the scope of the invention.
Fig. 1 illustrates the operation principle of a display device according to an embodiment of the present invention, which may be any display device, for example, a micro display device, an LED display device, an OLED display device, etc. As shown in fig. 1, the display device of the embodiment of the present invention may include a data processing unit 12, a first display chip 13, a second display chip 14, and an optical path unit 15. In the present embodiment, the pixel resolution of the second display chip 14 is the same as that of the first display chip 13, and the light emission abnormality position of the second display chip 14 is different from that of the first display chip 13. For example, the abnormal light emitting position information of the first display chip 13 and the second display chip 14 may be found and recorded by means of AOI (Automated Optical Inspection, automatic optical detection), where abnormal light emitting may include a situation that no light is emitted or some pixels are bright, dark or color cast exceeds a predetermined threshold value, which may be reasonably set by a person skilled in the art according to the application scenario of the display device. For the current conventional display chips with 1080 resolution or 4K resolution, the number of pixels is millions, the number of abnormal light-emitting pixels is usually several or tens, and the positions of abnormal light-emitting pixels are randomly distributed, so that for most cases, it is easy to find a display chip with two non-coincident abnormal light-emitting positions. The embodiments of the present invention are merely exemplary with two display chips, and those skilled in the art will appreciate that many more display chips are possible.
As shown in fig. 1, the data processing unit 12 is configured to receive initial image data sent by the image data source 11, where the image data source 11 may be located inside or outside the display device according to the embodiment of the present invention, for example, the image data source 11 may transmit the initial image data to the display device through an interface such as HDMI (High Definition Multimedia Interface, high-definition multimedia interface) or the image data source 11 is a remote server, and transmit the initial image data to the display device through a wired or wireless communication network, where the embodiment of the present invention does not limit the image data source 11. The data processing unit 12 processes the initial image data into first image data and second image data, and transmits the first image data to the first display chip 13 and the second image data to the second display chip 14.
As shown in fig. 2, assuming that the position shown by the white frame shown in the left diagram of fig. 2 is the abnormal light emission position of the first display chip 13, the data of the first image data corresponding to the abnormal light emission position of the first display chip 13 is non-light emission data, and the data of the remaining positions are the same as the initial image data, that is, the first image data is shown in the left diagram of fig. 2, wherein the data of the position shown by the white frame is non-light emission data, and the data of the hatched area is the same as the initial image data. Accordingly, the data of the second image data corresponding to the abnormal position of the light emission of the first display chip 13 is the same as the initial image data, and the data corresponding to the rest positions are non-light emitting data, that is, the second image data is shown in the right diagram of fig. 2, wherein the data of the position shown by the shaded frame is the same as the initial image data, and the rest white areas are non-light emitting data.
Thereby, the first display chip 13 emits light according to the first image data, and the second display chip 14 emits light according to the second image data. Because the data of the first image data corresponding to the abnormal light emitting position of the first display chip 13 is non-light emitting data, the pixel point of the abnormal light emitting of the first display chip 13 is avoided; and the second display chip 14 emits light only at the pixels corresponding to the abnormal positions of the first display chip 13, since the abnormal positions of the second display chip 14 are different from the abnormal positions of the first display chip 13, the pixels of the second display chip 14 having abnormal light are also avoided.
As further shown in fig. 1, the light path unit 15 is used to expose or project corresponding pixels of the first display chip 13 and the second display chip 14 at the same position. The exposure or projection position may be, for example, a display panel or a display screen. Since the corresponding pixels of the first display chip 13 and the second display chip 14 are exposed or projected at the same position, the normal light emitting pixels of the second display chip 14 compensate for the abnormal light emitting pixels of the first display chip 13, so that the display device can normally display as a whole. The light path unit 15 may be implemented using various optical elements, for example, corresponding pixels of the first display chip 13 and the second display chip 14 may be exposed or projected at the same position by a light reflecting element or a light refracting element.
As some alternative implementations of the embodiments of the present invention, the data processing unit 12 may be implemented by software, and the data processing unit 12 may be, for example, an MCU (Microcontroller Unit, micro control unit), and for video data, the initial image data may include a plurality of initial image data frames, as shown in fig. 3, the data processing unit 12 includes a filter program, the filter program is stored in a storage unit, and the storage unit further stores the abnormal light emitting position information of the first display chip 13, where the filter program is used to:
receiving an initial frame of image data, as indicated by the shaded box in fig. 3;
setting data corresponding to the abnormal light emitting position of the first display chip in the initial image data frame to 0 to obtain an image data frame as a first image data frame, wherein the first image data frame is shown as a shadow box with a plurality of gaps in fig. 3;
setting data except the light-emitting abnormal position corresponding to the first display chip in the initial image data frame to 0 to obtain an image data frame as a second image data frame, wherein the white frame is shown as a white box with a plurality of shadow small boxes in fig. 3;
and synchronously transmitting the first image data frame and the second image data frame to the first display chip and the second display chip respectively.
The filtering program also performs the same processing on other initial image data frames, and the optical path unit 15 exposes or projects corresponding pixels of the first image data frame and the second image data frame, which are synchronously displayed by the first display chip 13 and the second display chip 14, at the same position, so that each second image data frame of the second display chip 14 compensates for a non-light-emitting position in each first image data frame of the first display chip 13, thereby enabling the display device to normally display as a whole.
As further alternative to the embodiment of the present invention, the data processing unit 12 may be implemented by means of hardware. As shown in fig. 4, the first display chip 13 and the second display chip 14 may include a pixel array and a driving unit, and the data processing unit 12 may include a first screening unit 121, a storage unit 122, and a second screening unit 123. In the example of fig. 4, the first screening unit 121 and the second screening unit 123 each read the abnormal light emission position information from one storage unit 122, and in other embodiments, there may be two storage units 122 corresponding to the first screening unit 121 and the second screening unit 123, respectively, and the first screening unit 121 and the second screening unit 123 read the abnormal light emission position information from the respective corresponding storage units. In the present embodiment, the AOI method may be used to obtain the abnormal light emission position information of the first display chip 13, and the abnormal light emission position information of the first display chip 13 may be written into the storage unit 122 through the communication bus (I2C/SPI), so that the first and second screening units 121 and 123 may be able to read the abnormal light emission position information of the first display chip 13 from the storage unit 122.
In the example of fig. 4, the first filtering unit 121 is configured to obtain an initial image data frame and information of abnormal positions of light emission of the first display chip, and pass data in the initial image data frame except for the abnormal positions of light emission corresponding to the first display chip, so as to obtain a first image data frame; the second filtering unit 123 is configured to obtain an initial image data frame and information of a luminescence abnormal position of the first display chip, and pass data corresponding to the luminescence abnormal position of the first display chip in the initial image data frame, so as to obtain a second image data frame; and, the first filtering unit 121 and the second filtering unit 123 are further configured to synchronously transmit the first image data frame and the second image data frame to the first display chip and the second display chip, respectively.
Further, the first screening unit 121 is configured to: acquiring an initial image data frame and acquiring position information of each data in the initial image data frame; judging whether the position information of each data in the initial image data frame is the same as the abnormal luminous position information of the first display chip; the same data as the light emission abnormality position information of the first display chip is set to 0, and the data different from the light emission abnormality position information of the first display chip is kept unchanged.
Specifically, the first filtering unit 121 may acquire position information of each data in the initial image data frame, including row information and column information, from the video signal vs/hs/de. Similarly, the light emission abnormality position information of the first display chip stored in the storage unit also includes row information and column information. Setting the data to 0 when the position information of certain data in the initial image data frame is the same as the abnormal light emitting position information of the first display chip; when the position information of certain data in the initial image data frame is different from the light emission abnormality position information of the first display chip, the data is kept unchanged.
The second screening unit 123 is configured to: acquiring an initial image data frame and acquiring position information of each data in the initial image data frame; judging whether the position information of each data in the initial image data frame is the same as the abnormal luminous position information of the first display chip; setting data different from the abnormal light emission position information of the first display chip to 0, and keeping the same data as the abnormal light emission position information of the first display chip unchanged.
Accordingly, the second filtering unit 123 may also acquire the position information of each data in the initial image data frame according to the video signal vs/hs/de. The second filtering unit 123 operates opposite to the first filtering unit 121, and when the position information of certain data in the initial image data frame is the same as the abnormal light emission position information of the first display chip, the data is kept unchanged; when the position information of certain data in the initial image data frame is different from the abnormal light emitting position information of the first display chip, the data is set to 0.
As an alternative embodiment, when the number of abnormal light emission pixels of the first display chip is large, the first and second screening units 121 and 123 cannot read out all abnormal light emission position information at once. This occupies a large amount of hardware resources. In this case, the first screening unit 121 and the second screening unit 123 read one light emission abnormality position information at a time. For the first filtering unit 121, when the first filtering unit 121 acquires an initial image data frame, the first abnormal light emission position information is read, the position information of each data of the initial image data frame is compared with the first abnormal light emission position information one by one, when the data is not kept unchanged and normally passed, when the data is identical, the data is set to 0, the next abnormal light emission position information is read, and the comparison is continued until the output of one image data frame is completed, and then the next initial image data frame is repeated. For the second filtering unit 123, since the image data source 11 simultaneously transmits the initial image data frame to the first filtering unit 121 and the second filtering unit 123, the second filtering unit 123 synchronously acquires the initial image data frame, synchronously reads the first abnormal light emission position information, synchronously compares the position information of each data of the initial image data frame with the first abnormal light emission position information one by one, sets the data to 0 when the data are not identical, keeps the data unchanged and normally passes when the data are identical, reads the next abnormal light emission position information, and continues the comparison until the output of one image data frame is completed, and then repeats the next initial image data frame. The operations performed by the first and second screening units 121 and 123 are synchronized each time, so that the image frames displayed by the first and second display chips 13 and 14 are also synchronized.
In an alternative implementation manner of the embodiment of the present invention, the data processing unit 12 may also include only one filtering unit 124, and the storage unit 122 is also configured to store the abnormal light emitting position information of the first display chip. Wherein, screening unit 124 is used for: acquiring an initial image data frame and abnormal luminous position information of a first display chip; judging whether the position information of each data in the initial image data frame is the same as the abnormal luminous position information of the first display chip; when the position information is the same, 0 is sent to the first display chip, and the data with the same position information is synchronously sent to the second display chip; when the position information is different, data with different position information is sent to the first display chip, and 0 is synchronously sent to the second display chip.
Also, the screening unit 124 reads one light emission abnormality position information at a time. When the screening unit 124 acquires the initial image data frame, reading the first abnormal light emitting position information, comparing the position information of each data of the initial image data frame with the first abnormal light emitting position information one by one, and when the position information is different, sending data with different position information to the first display chip and synchronously sending 0 to the second display chip; and when the position information is the same, transmitting 0 to the first display chip, synchronously transmitting the data with the same position information to the second display chip, reading the position information of the next abnormal light emission, continuing to compare until one image data frame is output, and repeating the next initial image data frame.
In an optional implementation manner of the embodiment of the present invention, the storage unit may sequentially store row information and column information of abnormal light emission pixels of the first display chip. Let the resolution of the display chip be 19201080 for storing the position of an abnormal light-emitting pixelFor binary counting, the row information of the abnormal light emitting pixel is required to be 11 bits, the column information of the abnormal light emitting pixel is required to be 11 bits, namely, at least 22 bits of storage space is required to store the position information of one abnormal light emitting pixel, if n abnormal light emitting pixels exist in the first display chip, at least 22n bits of storage space is required, when the resolution of the display chip is 8K, the position information of one abnormal light emitting pixel needs more storage space, and the manufacturing process of the display chip is limited, more abnormal light emitting pixels exist, so that a large amount of storage space is occupied to store the position information of the abnormal light emitting pixel.
In order to reduce the occupation of the memory space and improve the processing efficiency of the data processing unit, as an alternative embodiment, the number of the light emitting abnormal pixels of the first display chip is smaller than the number of the light emitting abnormal pixels of the second display chip. That is, a display chip having a smaller number of abnormal light-emission pixels is selected as the first display chip of the display device of the embodiment of the present invention.
In order to further reduce the occupation of the memory space, in an alternative implementation of the embodiment of the present invention, the memory unit 122 may include a plurality of memory blocks arranged in sequence, still with a resolution of 1920 of the display chip1080 is taken as an example, each memory block occupies 11 bits of memory space, and when the resolution of the display chip is 4K or even 8K, each memory block needs to occupy more bits, that is, the bits occupied by each memory block are determined by the pixel resolution of the display chip.
The first storage block of the storage unit 122 is used for storing row information of a first abnormal light emitting pixel, the second storage block is used for storing column information of the first abnormal light emitting pixel, when other abnormal light emitting pixels exist in the row where the first abnormal light emitting pixel exists, the subsequent storage block is used for sequentially storing column information of all other abnormal light emitting pixels which are in the same row with the first abnormal light emitting pixel respectively, and the subsequent storage block is used for storing end information of the row where the first abnormal light emitting pixel exists. For example, assuming that the 1 st light emission abnormal pixel appears in the 3 rd row, the 1 st memory block stores row information of the 1 st light emission abnormal pixel as d3 in binary, and the following 2 nd memory block stores column information of the 1 st light emission abnormal pixel as d5, so that position information (d 3, d 5) of the 1 st light emission abnormal pixel can be known. Assuming that other abnormal light emitting pixels exist in the 3 rd row, such as 500 th column, 800 th column and 1500 th column, the column information of the 2 nd abnormal light emitting pixel may be stored in the 3 rd storage block as d500, the column information of the 3 rd abnormal light emitting pixel may be stored in the 4 th storage block as d800, and the column information of the 4 th abnormal light emitting pixel may be stored in the 5 th storage block as d1500. The pixel array of the display chip has 1920 columns, at most, 11 bits can represent 2047, and if the 3 rd row has no other abnormal light emission pixels, the data processing unit 12 can know that the 3 rd row has no other abnormal light emission pixels when the data stored in the data processing unit 12 reads that the data stored in the storage block is 2047 when the storage block stores d2047 for example to represent the end information of the row. And when no other light-emitting abnormal pixels exist in the line of the first light-emitting abnormal pixel, the latter storage block is used for storing the end information of the line of the first light-emitting abnormal pixel. It will be appreciated by those skilled in the art that the first memory block may also be used to store column information for the first light emitting anomaly pixel and the second memory block may also be used to store row information for the first light emitting anomaly pixel.
And the subsequent storage block can store the position information of the rest abnormal pixels according to the rule until the position information of all abnormal pixels of the first display chip is stored.
In another optional implementation manner of the embodiment of the present invention, the first storage block is configured to store column information of a first abnormal light emitting pixel, the second storage block is configured to store row information of the first abnormal light emitting pixel, and when other abnormal light emitting pixels exist in a column of the first abnormal light emitting pixel, the subsequent storage block is configured to sequentially store row information of all other abnormal light emitting pixels in the same column as the first abnormal light emitting pixel, and the subsequent storage block is configured to store end information of the column in which the first abnormal light emitting pixel exists; when no other light emission abnormal pixels exist in the column of the first light emission abnormal pixel, the latter storage block is used for storing end information of the column of the first light emission abnormal pixel. And the subsequent storage block is used for storing the position information of the rest abnormal luminous pixels according to the rule until the position information of all abnormal luminous pixels of the first display chip is stored. Likewise, the first memory block may be used to store row information of the first light emission anomaly pixel, and the second memory block may be used to store column information of the first light emission anomaly pixel.
By storing the positional information of the light emission abnormal pixels of the first display chip using the above-described rule, the light emission abnormal pixels of the same row may share one row information, or the light emission abnormal pixels of the same column may share one column information. Further, when the storage rule of the position information of the abnormal light emitting pixels is selected and stored in the storage unit, whether the abnormal light emitting pixels of the same row or the abnormal light emitting pixels of the same column of the display chip are more or not can be judged, and if the abnormal light emitting pixels of the same row are more, the storage rule sharing one row of information is selected; if there are more abnormal pixels in the same column, a storage rule sharing one column of information is selected, so that the occupation of the storage space can be further reduced.
It should be noted that, in the display device according to the embodiment of the present invention, the number of abnormal light-emitting pixels of the first display chip 13 and the second display chip 14 is not excessive, and when the number of abnormal light-emitting pixels is excessive, it is difficult to find a display chip whose two abnormal light-emitting positions are not coincident on the one hand, and on the other hand, storing the position information of the excessive abnormal light-emitting pixels requires occupying an excessive storage space and is unfavorable for the processing of the data processing unit. When the number of the abnormal light-emitting pixels is too large, the display chip can be selected to be abandoned, or more display chips can be adopted, so long as the abnormal light-emitting pixels do not appear at the same position on all the display chips, the technical scheme of the embodiment of the invention can be adopted, and the normal light-emitting pixels of other display chips are utilized to compensate the abnormal light-emitting pixels of the first display chip, so that the display equipment can normally display on the whole.
Although embodiments of the present invention have been described in connection with the accompanying drawings, various modifications and variations may be made by those skilled in the art without departing from the spirit and scope of the invention, and such modifications and variations are within the scope of the invention as defined by the appended claims.
Claims (10)
1. A display device, characterized by comprising:
a first display chip;
a second display chip having the same pixel resolution as the first display chip, the second display chip having a light emission abnormality position different from that of the first display chip;
the data processing unit is used for receiving initial image data, processing the initial image data into first image data and second image data, sending the first image data to the first display chip and sending the second image data to the second display chip; the first image data and the data corresponding to the abnormal light emitting position of the first display chip are non-light emitting data, and the data corresponding to the rest positions are the same as the initial image data; the data corresponding to the second image data and the abnormal light emitting position of the first display chip are the same as the initial image data, and the data corresponding to the rest positions are non-light emitting data;
and the optical path unit is used for exposing or projecting corresponding pixels of the first display chip and the second display chip at the same position.
2. The display device according to claim 1, wherein the initial image data comprises a plurality of initial image data frames, and the data processing unit comprises a filter program for:
receiving the initial image data frame;
setting data corresponding to the abnormal light emitting position of the first display chip in the initial image data frame to 0 to obtain an image data frame as a first image data frame;
setting data except the abnormal light emitting position corresponding to the first display chip in the initial image data frame to 0 to obtain an image data frame as a second image data frame;
and synchronously transmitting the first image data frame and the second image data frame to the first display chip and the second display chip respectively.
3. The display device according to claim 1, wherein the initial image data includes a plurality of initial image data frames, the data processing unit includes a first screening unit, a second screening unit, and a storage unit for storing light emission abnormality position information of the first display chip;
the first screening unit is used for acquiring the initial image data frame and the abnormal light-emitting position information of the first display chip, and enabling data, except the abnormal light-emitting position corresponding to the first display chip, in the initial image data frame to pass through so as to obtain a first image data frame;
the second screening unit is used for acquiring the initial image data frame and the abnormal luminous position information of the first display chip, and enabling the data corresponding to the abnormal luminous position of the first display chip in the initial image data frame to pass through so as to obtain a second image data frame;
the first screening unit and the second screening unit are further configured to transmit the first image data frame and the second image data frame to the first display chip and the second display chip, respectively, in synchronization.
4. A display device as claimed in claim 3, characterized in that the first screening unit is adapted to:
acquiring the initial image data frame and acquiring position information of each data in the initial image data frame;
judging whether the position information of each data in the initial image data frame is the same as the abnormal luminous position information of the first display chip;
setting 0 the same data as the abnormal light emitting position information of the first display chip, and keeping unchanged the data different from the abnormal light emitting position information of the first display chip; and is also provided with
The second screening unit is used for:
acquiring the initial image data frame and acquiring position information of each data in the initial image data frame;
judging whether the position information of each data in the initial image data frame is the same as the abnormal luminous position information of the first display chip;
setting data different from the abnormal light emitting position information of the first display chip to 0, and keeping the same data as the abnormal light emitting position information of the first display chip unchanged.
5. The display device according to claim 1, wherein the initial image data includes a plurality of initial image data frames, the data processing unit includes a filtering unit and a storage unit for storing light emission abnormality position information of the first display chip; the screening unit is used for:
acquiring the initial image data frame and the abnormal luminous position information of the first display chip;
judging whether the position information of each data in the initial image data frame is the same as the abnormal luminous position information of the first display chip;
when the position information is the same, 0 is sent to the first display chip, and the data with the same position information is synchronously sent to the second display chip;
and when the position information is different, sending the data with the different position information to the first display chip, and synchronously sending 0 to the second display chip.
6. The display device according to claim 1, wherein the number of light emission abnormal pixels of the first display chip is smaller than the number of light emission abnormal pixels of the second display chip.
7. The display device according to any one of claims 3 to 5, wherein the memory unit includes a plurality of memory blocks arranged in sequence, wherein
The first storage block is used for storing row information or column information of a first luminescence abnormal pixel, the second storage block is used for storing column information or row information of the first luminescence abnormal pixel, when other luminescence abnormal pixels exist in the row where the first luminescence abnormal pixel is located, the subsequent storage block is used for sequentially storing column information of all other luminescence abnormal pixels which are in the same row with the first luminescence abnormal pixel respectively, and the subsequent storage block is used for storing end information of the row where the first luminescence abnormal pixel is located;
and the subsequent storage block is used for storing the position information of the rest abnormal luminous pixels according to the rule until the position information of all abnormal luminous pixels of the first display chip is stored.
8. The display device according to claim 7, wherein the latter storage block is configured to store end information of a row in which the first light emission abnormal pixel is located when no other light emission abnormal pixel exists in the row in which the first light emission abnormal pixel is located.
9. The display device according to any one of claims 3 to 5, wherein the memory unit includes a plurality of memory blocks arranged in sequence, wherein
The first storage block is used for storing column information or row information of a first luminescence abnormal pixel, the second storage block is used for storing row information or row information of the first luminescence abnormal pixel, when other luminescence abnormal pixels exist in the row of the first luminescence abnormal pixel, the subsequent storage block is used for sequentially storing row information of all other luminescence abnormal pixels which are in the same row with the first luminescence abnormal pixel respectively, and the subsequent storage block is used for storing end information of the row of the first luminescence abnormal pixel;
and the subsequent storage block is used for storing the position information of the rest abnormal luminous pixels according to the rule until the position information of all abnormal luminous pixels of the first display chip is stored.
10. The display device of claim 7, wherein bits occupied by each of the memory blocks are determined by a pixel resolution of the first display chip or the second display chip.
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