CN109377884B - Display panel, display device and driving method of display panel - Google Patents
Display panel, display device and driving method of display panel Download PDFInfo
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- CN109377884B CN109377884B CN201811484600.4A CN201811484600A CN109377884B CN 109377884 B CN109377884 B CN 109377884B CN 201811484600 A CN201811484600 A CN 201811484600A CN 109377884 B CN109377884 B CN 109377884B
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
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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
- G09G3/001—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes using specific devices not provided for in groups G09G3/02 - G09G3/36, e.g. using an intermediate record carrier such as a film slide; Projection systems; Display of non-alphanumerical information, solely or in combination with alphanumerical information, e.g. digital display on projected diapositive as background
Abstract
The embodiment of the application provides a driving method of a display panel, which comprises the following steps: the display panel comprises a display assembly and an ink assembly arranged on the display assembly, the display assembly comprises a theoretical display area and an actual display area, the ink assembly comprises an opening area, the opening area covers the actual display area, and the theoretical display area covers the opening area; the driving method includes: providing a test image into a theoretical display area of a display panel; determining the first column and the last column of the actual display area; adjusting display information in the driving chip; and transmitting the adjusted data to the display panel. The actual display area determined by the driving method of the display panel can avoid the influence of the fitting tolerance and the printing ink printing tolerance, so that the display area of the display panel produced in batch can improve the production consistency.
Description
[ technical field ] A method for producing a semiconductor device
The present invention relates to the field of display technologies, and in particular, to a display panel, a display device, and a driving method of the display panel.
[ background of the invention ]
With the great development of display technology, the requirements of consumers on the screen ratio of display devices are higher and higher. More and more consumers are willing to purchase full screen display devices. However, due to the existing design and process, the left and right frames of the display panel need to be provided with wider non-display regions for placing the gate driving circuit and the frame sealing glue and the cutting buffer region. In addition, in the OLED display panel, the frame sealing glue is melted and solidified by laser, and the temperature of the frame sealing glue is as high as 500-600 ℃, so that a buffer area needs to be arranged between the gate drive circuit and the frame sealing glue to prevent the gate drive circuit from being damaged by high temperature. This results in the border area not being compressible in width. The improvement of the screen occupation ratio cannot meet the requirement. To solve this problem, there is a current solution to reduce the width of the bezel by bending the bezel area using a flexible display panel. However, due to the limitation of the attaching tolerance and the printing tolerance of the ink, a part of the display area is blocked, and each blocked display area is different for the display panels produced in the same batch. It does not enable a truly narrow-bezel or even frameless display panel.
[ summary of the invention ]
Embodiments of the present invention provide a solution to the above technical problem.
In one aspect, the present application provides a driving method of a display panel, where the display panel includes a display module and an ink module disposed on the display module, the display module includes a theoretical display area and an actual display area, the ink module includes an opening area, the opening area covers the actual display area, and the theoretical display area covers the opening area; the driving method includes: providing a test image into a theoretical display area of a display panel; determining the first column and the last column of the actual display area; adjusting display information in the driving chip; and transmitting the adjusted data to the display panel.
Optionally, the providing the test image into the theoretical display area of the display panel specifically includes: determining image information of the test image; determining the position of the test image in the theoretical display area; transmitting the test image to the theoretical display area;
optionally, the determining the image information of the test image includes: the test image comprises a detection column, pixels of the detection column display first brightness, other pixels in the test image display second brightness, and the first brightness is different from the second brightness. The detection column is the x-th column in the theoretical display area;
optionally, if the number of columns in the theoretical display area is an odd number, the detection column is a middle column in the theoretical display area; and if the number of the rows of the theoretical display area is an even number, the detection row is any one of two middle rows in the theoretical display area.
Optionally, the determining the position of the test image in the theoretical display area specifically includes: the edge of the test image is between the edge of the opening area and the edge of the theoretical display area.
Optionally, the step of determining the position of the opening area in the theoretical display area by the edge of the test image between the edge of the opening area and the edge of the theoretical display area; the estimating the position of the open area in the theoretical display area comprises: determining that the first column of the design position of the opening area is the a-th column in the theoretical display area, and the last column of the design position of the opening area is the b-th column in the theoretical display area; determining a fitting tolerance p column and determining an ink printing tolerance q column; the first column of the test image is positioned before the a-p-q column of the theoretical display area, and the last column of the test image is positioned after the b + p + q column of the theoretical display area.
Optionally, the determining the head column and the tail column of the actual display area specifically includes: determining a position of the open area in the theoretical display area; determining the number of columns of the actual display area according to the determined positions of the plurality of opening areas in the theoretical display area; adjusting the position of the actual display area in the opening area so that the actual display area is located in the middle of the opening area.
Optionally, the determining the position of the opening area in the theoretical display area specifically includes: collecting optical data by using a CCD camera, wherein the distance from the head column of the light-emitting region to the detection column is b1 columns, and the distance from the tail column of the light-emitting region to the detection column is b2 columns; the light-emitting area is the opening area, the head column of the opening area is x-b1 columns in the theoretical display area, and the tail column of the opening area is x + b2 columns in the theoretical display area;
optionally, the number of columns in the designed actual display area is s columns; the determining the number of columns of the actual display area according to the determined positions of the plurality of open areas in the theoretical display area specifically includes: determining the number of columns t of the actual display area to be s when the determined number of columns b1+ b2 of the plurality of open areas are all greater than or equal to s; when any one of the measured column numbers b1+ b2 of the plurality of open areas is smaller than s columns, determining the column number t of the actual display area as the minimum value among the column numbers b1+ b2 of all open areas;
optionally, the adjusting the position of the actual display area in the opening area so that the actual display area is located in the middle of the opening area specifically includes: determining the position of the first column of the actual display area in the theoretical display area as the x-b1+ (b1+ b2-t)/2 column; and determining the position of the tail column of the actual display area in the theoretical display area as the x + b2- (b1+ b2-t)/2 column.
Optionally, the adjusting the display information in the driving chip specifically includes: storing the first column information x-b1+ (b1+ b2-t)/2 and the tail column information x + b2- (b1+ b2-t)/2 of the actual display area into a storage area register; and the driving chip reads the first column information and the tail column information and redefines the number of the data line columns.
Optionally, the reading, by the driver chip, the first column information and the tail column information, and the redefining the column number of the data line specifically includes: and setting the data lines positioned outside the first column and the tail column in the theoretical display area to be in a high-impedance state.
In another aspect, the present application provides a display panel, which employs the driving method of the display panel.
In another aspect, the present application provides a display device comprising the display panel of the above claims.
The actual display area determined by the driving method of the display panel can avoid the influence of the fitting tolerance and the printing ink printing tolerance, so that the display area of the display panel produced in batch can improve the production consistency.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic front view of a display panel according to an embodiment of the present application;
FIG. 2 is a schematic top view of the display panel of the embodiment shown in FIG. 1;
FIG. 3 is a schematic diagram of a display panel driving method according to an embodiment of the present application;
FIG. 4 is a schematic diagram of a display panel driving method according to another embodiment of the present application;
FIG. 5 is a schematic diagram of a display panel driving method according to yet another embodiment of the present application;
FIG. 6 is a schematic diagram of a display panel driving method according to yet another embodiment of the present application;
fig. 7 is a schematic diagram of a display device according to an embodiment of the present application.
[ detailed description ] embodiments
For better understanding of the technical solutions of the present invention, the following detailed descriptions of the embodiments of the present invention are provided with reference to the accompanying drawings.
It should be understood that the described embodiments are only some embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the examples of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
It should be understood that although the terms first, second, third, etc. may be used to describe the brightness in the embodiments of the present invention, the brightness should not be limited to these terms. These terms are only used to distinguish brightness from each other. For example, the first luminance may also be referred to as the second luminance, and similarly, the second luminance may also be referred to as the first luminance without departing from the scope of the embodiments of the present invention.
The concept of "full screen" is highly focused by the market at present, and the concept of screen occupation is proposed in order to evaluate the degree of full screen. Which represents the proportion of the area occupied by the display area in a top view of the display device. The lifting screen ratio can be divided into three aspects: 1. the frame width of the left frame and the right frame is reduced; 2. reducing the width of the lower step; 3. the problem of placing of frame camera and various other sensors is solved. For the first aspect, the problem of reducing the frame width of the left and right frames is limited by the existing design and process, and the left and right frames of the display panel need to be provided with wider non-display regions for placing the gate driving circuit and the frame sealing glue and the cutting buffer region. In addition, in the OLED display panel, the frame sealing glue is melted and solidified by laser, and the temperature of the frame sealing glue is as high as 500-600 ℃, so that a buffer area needs to be arranged between the gate drive circuit and the frame sealing glue to prevent the gate drive circuit from being damaged by high temperature. This results in the border area not being compressible in width. The improvement of the screen occupation ratio cannot meet the requirement. To solve this problem, there is a current solution to reduce the width of the bezel by bending the bezel area using a flexible display panel. However, due to the limitation of the attaching tolerance and the printing tolerance of the ink, a part of the display area is blocked, and each blocked display area is different for the display panels produced in the same batch. It cannot realize a borderless display panel in a true sense.
The present application provides a driving method of a display panel to solve the above problems. Referring to fig. 1, fig. 2 and fig. 3, fig. 1 is a schematic front view of a display panel according to an embodiment of the present application; FIG. 2 is a schematic top view of the display panel of the embodiment shown in FIG. 1; FIG. 3 is a schematic diagram of a display panel driving method according to an embodiment of the present application;
an embodiment of the present application provides a driving method of a display panel, the driving method of the present application is directed to a display panel, the display panel includes a display assembly 10 and an ink assembly 21 disposed on the display assembly 10, the display assembly 10 includes a theoretical display area AA and an actual display area BB, the ink assembly 21 includes an opening area 22, it should be noted that the ink assembly is generally disposed on a cover plate 20, the cover plate 20 is generally made of a transparent material, the ink area on the transparent cover plate covers the edge, and the area not covered by the ink material is the opening area 22. The open area 22 covers the actual display area BB, and the theoretical display area AA covers the open area 22; it should be noted that the theoretical display area in this application is a display area that theoretically can display, in other words, the theoretical display area in the area where the driving circuit and the light emitting device are already disposed on the display module 10 can display by receiving a signal. And the actual display area BB is an area which is finally emitted by the actual transmission signal. The theoretical display area and the actual display area are arranged to reduce the frame as much as possible and create the premise of ensuring the consistency of different batches of production. The following specifically states the reasons: the prior art can not distinguish a theoretical display area from an actual display area, and only has one display area. If this display area is larger than the opening area 22, it will result in a portion of the display area being blocked by the ink set 21, and due to the fit tolerance, the blocked area of each display panel will be different, and the consistency of different batches will not be guaranteed. If the display area is smaller than the opening area 22, the distance between the display area and the left and right frames is not equal due to the tolerance of the fit and the tolerance of the ink printing, that is, the position of the display area in each display panel is not determined, and the consistency among different batches is not guaranteed.
The driving method of the present application includes:
s1: providing a test image 300 into a theoretical display area AA of the display panel; the test image 300 includes preset image information, and display panel parameters can be obtained according to the preset image information.
S2: determining a first column 401 and a last column 409 of an actual display area BB; the positions of the first column 401 and the last column 409 in the theoretical display area AA are calculated after the display panel is tested by the provided test image 300.
S3: adjusting display information in the driving chip; the initial information of the driving chip is the display information corresponding to the theoretical display area. After the positions of the first column 401 and the last column 409 of the actual real area BB are obtained, the new display information is written into the driver chip, and the display information of the driver chip is adjusted.
S4: and transmitting the adjusted data to the display panel. And finally, transmitting the data adjusted by the driving chip to a display panel for display during actual display.
In the present application, the theoretical display area AA and the actual display area BB are provided, and the theoretical display area AA covers the opening area 22, so that it can be ensured that the theoretical display area of the present application can cover the opening area 22 no matter how much the bonding tolerance or the ink printing tolerance exists, that is, the area in the opening area 22 can theoretically display no matter how much the bonding tolerance and the ink printing tolerance exist. Thus, the influence of the fitting tolerance and the ink printing tolerance on the display panel is avoided. On the other hand, the opening area 22 covers the actual display area BB, and the position of the actual display area BB is determined by the test image by the above-described driving method, so that the actual display area BB can be ensured not to be blocked, and the position of the actual display area can be set in the middle of the opening area 22 according to the test image, which is sufficient to ensure the production uniformity.
The driving method of the display panel of the present application is specifically described below by steps:
s1: providing a test image 300 into a theoretical display area AA of the display panel; referring to fig. 2 and 4, fig. 4 is a schematic diagram of a display panel driving method according to another embodiment of the present application;
providing the test image 300 into the theoretical display area AA of the display panel includes:
s11: determining image information of the test image; the purpose of providing the test image 300 to the theoretical display area AA of the display panel is to determine the position of the opening area 22. First, a picture that can be detected and calculated by the CCD camera is transmitted to the theoretical display area AA. The CCD camera may capture luminance information at the pixel level, and therefore, determining image information of the test image includes: the test image 300 includes a test column, the pixels of the test column displaying a first brightness, and the other pixels of the test image 300 displaying a second brightness, the first brightness being different from the second brightness. The detection column is the x column in the theoretical display area; in this embodiment, when inputting the test image, the first column 301, the last column 302 and the detection column 305 of the test image are designed, wherein the detection column is the x-th column in the reference frame, which is equivalent to the theoretical display area AA. And the brightness of the detection column is different from that of other columns, so that the information of the opening area can be determined by capturing the relative relationship of the detection column in the test image by the CCD camera.
Furthermore, in order to reduce the calculation amount, reduce the detection difficulty and reduce the error
If the number of the rows of the theoretical display area is an odd number, the detection row is a middle row in the theoretical display area;
and if the number of the rows of the theoretical display area is an even number, the detection row is any one of two middle rows in the theoretical display area.
For example: the display panel with the resolution of the theoretical display area AA of 1920 × 1200 uses rendering pixel arrangement, which includes 1200 × 2 columns, and can use the 1200 th column or the 1201 st column as a detection column, so that the detection column is basically located in the middle of the display panel, when the CCD camera is just shooting pictures of the detection column, the distances from the CCD camera to the first column 301 and the last column 309 of the test image 300 are not much, the distortion of the lens is relatively similar, the error can be reduced, and the workload of distortion correction can be reduced.
For another example: the display panel with the resolution of the theoretical display area AA of 1920 × 1199 uses the rendering pixel arrangement, which includes 1199 × 3 columns, and can use 1799 th column as a detection column, and similarly, the detection column is located at the middle position of the display panel, when the CCD camera is just shooting pictures of the detection column, the distances from the CCD camera to the first column 301 and the last column 309 of the test image 300 are not much, the distortion of the lens is relatively similar, the error can be reduced, and the workload of distortion correction can be reduced.
S12: determining the position of the test image in the theoretical display area; determining the position of the test image in the theoretical display area specifically includes: the edge of the test image 300 is between the edge of the open area and the edge of the theoretical display area. I.e., the first 301 and last 309 columns of the test image 300 must exceed the open area 22 but fall between the first 101 and last 109 columns of the theoretical display area, this ensures that the display information does not overflow and the data is accurate. And the first column 301 and the last column 309 of the test image 300 exceeding the opening area 22 represent that the area of the test image 300 is larger than that of the opening area 22, and the opening area must have brightness information, so that the position of the opening area 22 can be accurately determined.
There are two methods for ensuring that the edge of the test image 300 is between the edge of the open area 22 and the edge of the theoretical display area AA.
The first method comprises the following steps:
the resolution of the test image 300 is set to be identical to that of the theoretical display area AA. The first column 301 of the test image is the first column 101 of the theoretical display area and the last column 309 of the test image is the last column 109 of the theoretical display area, which ensures that the test image 300 does not exceed the open area 22 but the theoretical display area AA.
And the second method comprises the following steps:
estimating the position of said open area 22 in said theoretical display area;
the method specifically comprises the following steps:
determining the first column of the design position of the opening area 22 as the a-th column in the theoretical display area AA, and the last column as the b-th column in the theoretical display area AA;
determining a fitting tolerance p column;
determining an ink printing tolerance q column;
the first column of the test image is located before the a-p-q column of the theoretical display area AA, and the last column of the test image is located after the b + p + q column of the theoretical display area AA.
The above calculation method calculates the extreme value of the deviation of the open area 22 from the design position, and when the fitting tolerance and the ink printing tolerance deviate in the same direction, the head of the open area 22 is a-p-q, so that the test image 300 must exceed the left edge of the open area 22 as long as the head 301 of the test image 300 is between the 1 st column and the a-p-q column of the theoretical display area. Similarly, when the sticking tolerance and the ink printing tolerance deviate in the same direction, the end of the open area 22 is b + p + q, and therefore, the test image 300 must exceed the right edge of the open area 22 as long as the leading column 301 of the test image 300 is between the b + p + q th column to the trailing column 309 of the theoretical display area. When the edges of the test image 300, i.e., the first row 301 and the last row 309, satisfy the above conditions at the same time, it is ensured that the test image 300 is present in the opening area 22, and that the CCD camera can accurately detect the position of the opening area 22 in the theoretical display area AA.
S13: transmitting the test image to the theoretical display area; after the specific image of the test image 300 to be displayed and the specific position of the displayed image in the theoretical display area AA are determined, the test image 300 can be transmitted into the theoretical display area AA for testing.
Further, in the above-mentioned case,
s2: determining a first column 401 and a last column 409 of an actual display area BB; referring to fig. 1, fig. 2, fig. 5 and fig. 6, fig. 5 is a schematic diagram of a display panel driving method according to another embodiment of the present application; FIG. 6 is a schematic diagram of a display panel driving method according to yet another embodiment of the present application;
determining the first column and the last column of the actual display area specifically comprises:
s21: determining a position of the open area in the theoretical display area; the position of the open area 22 in the theoretical display area AA can be determined from the test image of S1;
the method specifically comprises the following steps:
collecting optical data by using a CCD camera, wherein the distance from the head column of the light-emitting region to the detection column is b1 columns, and the distance from the tail column of the light-emitting region to the detection column is b2 columns; the light emitting area is the opening area, and the detection image 300 exceeds the opening area 22 according to the detection image 300 provided in the above S1, and since the ink set 21 is provided outside the opening area 22, the ink set 21 blocks the detection image 300 outside the opening area 22, and thus the image information acquired by the CCD camera is an image in the opening area 22. The CCD camera can detect luminance data at a pixel level, and the distances from the detection column 305 (the luminance information of the detection column is different from other columns and thus can be recognized) to the first and last columns of the opening area 22 (the first and last columns are located at the edge of the opening area, and have luminance information on one side and no luminance information on the other side, and thus can be detected by the CCD camera) can be determined based on the optical data collected by the CCD camera. The distance is divided by the width of each column of pixels to calculate the number of columns b1 and b 2.
Since the detection column 305 is the set value x at the position of the theoretical display area AA, the leading column of the open area 22 in the theoretical display area is x-b1 column and the trailing column of the open area in the theoretical display area is x + b2 column, based on the previous detection values;
s22: determining the number of columns of the actual display area according to the determined positions of the plurality of opening areas in the theoretical display area; since the ink components of each display panel have printing tolerances when printed, and the printing tolerances are different, the size of the opening area 22 of each display panel is actually different. Therefore, it is necessary to determine the number of columns of the actual display area BB from the positions of the opening areas 22 of the plurality of display panels at the theoretical display area AA. If a single display panel is used to determine the number of columns that may cause the opening area of other panels to be smaller than the actual display area BB set by us, the opening area will be blocked by the ink assembly 21, resulting in inconsistent sizes of display panels produced in the same batch or in different batches. The mode of the embodiment avoids the situation through the principles of statistics and probability theory. The consistency of the produced display panel is further ensured.
Specifically, the number of columns of the actual display area is designed to be s columns in the design stage;
determining the number of columns t of the actual display area as s when the measured number of columns b1+ b2 of the plurality of open areas 22 is all greater than or equal to s; that is, when the number of columns of the opening areas 22 of all the display panels is greater than the design value s, it can be ensured that each opening area 22 is greater than the design value s, and the driving method of the present application cannot be blocked by ink. Therefore, the number of columns t of the actual display area can be determined as the design value s.
When any one of the measured column numbers b1+ b2 of the plurality of open areas 22 is smaller than s columns, determining the column number t of the actual display area as the minimum value among the column numbers b1+ b2 of all open areas; i.e. the number of columns of the open area 22 of at least one display panel is smaller than the design value s. If the number of columns of the actual display area BB is determined to be the design value s, the actual display area of the display panel is blocked by the ink. In order to avoid this, the number of columns t of the actual display area BB is determined to be the minimum of the number of columns of the opening areas 22, which ensures that the actual display area of each display panel is not blocked by the ink set 21.
Further, in order to make the position of the actual display area visually centered in each display panel,
s23: adjusting the position of the actual display area in the opening area so that the actual display area is located in the middle of the opening area.
The method specifically comprises the following steps:
determining the position of the first column of the actual display area in the theoretical display area as the x-b1+ (b1+ b2-t)/2 column;
and determining the position of the tail column of the actual display area in the theoretical display area as the x + b2- (b1+ b2-t)/2 column.
The principle of the design is that according to the fact that the number of columns of the actual display area is t and the number of columns of the opening area 22 is b1+ b2 in the previous test, columns with b1+ b2-t are not needed to be displayed and are called black edges in a common way, and in order to guarantee the visual centering of the actual display area, half of the black edges (b1+ b2-t)/2 are needed to be arranged on the left side and the right side of the actual display area respectively; the first column of the open area 22 is column x-b1, so the first column of the actual display area should be x-b1+ (b1+ b 2-t)/2; the tail column of the opening region is column x + b2, the tail column of the actual display region BB should be x + b2- (b1+ b 2-t)/2. This ensures that the actual display area BB is equally visually centered from the edge of the opening area 22.
Further, it is necessary to write these information to the driver chip after determining the first column and the last column of the actual display area, and adjust the display information of the driver chip.
S3: adjusting display information in the driving chip;
the method specifically comprises the following steps:
storing the first column information x-b1+ (b1+ b2-t)/2 and the tail column information x + b2- (b1+ b2-t)/2 of the actual display area into a storage area register;
and the driving chip reads the first column information and the tail column information and redefines the number of the data line columns. Therefore, only the data lines of the actual display area BB can receive the data line signals to realize display after information is written, and stable display of the display panel is realized. And the frame can be narrowed as much as possible under the condition of meeting the requirements of customers.
Further, in the above-mentioned case,
the driving chip reads the first column information and the tail column information, and redefining the column number of the data lines specifically comprises: and setting the data lines positioned outside the first column and the tail column in the theoretical display area to be in a high-impedance state.
S4: and transmitting the adjusted data to the display panel. And finally, transmitting the data adjusted by the driving chip to a display panel for display during actual display. The display image is firstly adapted to the resolution of the actual display area, and the display of complete information is realized. And the technical effect of narrow frame is achieved.
The columns described in the present application are only in relative positional relationship, and the columns described in the present application may be rows, and the upper and lower sides described in the present application may be left and right. The method can be applied to pixel rows or both rows and columns to realize the four-side narrow frame.
The application discloses a display panel's drive method is through providing test image to theoretical display area, confirms the position in actual display area to write in information drive chip, display image transmits display panel after drive chip handles, and the influence of laminating tolerance and printing ink printing tolerance can be avoided in the actual display area that this application confirmed, makes batch production's display panel's display area, promotes the uniformity of production.
The application also discloses a display panel and a display device. The display device of the present application may include the display panel 100 to which the above-described driving method is applied, as of the present application. Including but not limited to a cellular phone 1000, a tablet computer, a display of a computer, a display applied to a smart wearable device, a display device applied to a vehicle such as an automobile, etc., as shown in fig. 7. The display device is considered to fall within the scope of protection of the present application as long as the display device includes the display panel included in the display device disclosed in the present application.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (14)
1. A driving method of a display panel is characterized in that,
the display panel comprises a display assembly and an ink assembly arranged on the display assembly, the display assembly comprises a theoretical display area and an actual display area, the ink assembly comprises an opening area, the opening area covers the actual display area, and the theoretical display area covers the opening area;
the driving method includes:
providing a test image into a theoretical display area of a display panel;
determining the first column and the last column of an actual display area, and calculating the positions of the first column and the last column in the theoretical display area after the display panel is tested through the test image;
acquiring the positions of the first column and the tail column of the actual display area in the theoretical display area, and adjusting display information in a driving chip;
and transmitting the adjusted data to the display panel.
2. The method for driving a display panel according to claim 1,
the providing the test image to the theoretical display area of the display panel specifically comprises:
determining image information of the test image;
determining the position of the test image in the theoretical display area;
transmitting the test image to the theoretical display area.
3. The method for driving a display panel according to claim 2,
the determining image information of the test image comprises:
the test image comprises a detection column, pixels of the detection column display first brightness, other pixels in the test image display second brightness, and the first brightness is different from the second brightness; the detection column is the x-th column in the theoretical display area.
4. The method for driving the display panel according to claim 3,
if the number of the rows of the theoretical display area is an odd number, the detection row is a middle row in the theoretical display area;
and if the number of the rows of the theoretical display area is an even number, the detection row is any one of two middle rows in the theoretical display area.
5. The method for driving a display panel according to claim 2,
the determining the position of the test image in the theoretical display area specifically includes:
the edge of the test image is between the edge of the open area and the edge of the theoretical display area.
6. The method for driving the display panel according to claim 5,
the edge of the test image between the edge of the open area and the edge of the theoretical display area specifically comprises estimating the position of the open area in the theoretical display area;
the estimating the position of the open area in the theoretical display area comprises:
determining that the first column of the design position of the opening area is the a-th column in the theoretical display area, and the last column of the design position of the opening area is the b-th column in the theoretical display area;
determining a fitting tolerance p column;
determining an ink printing tolerance q column;
the first column of the test image is positioned before the a-p-q column of the theoretical display area, and the last column of the test image is positioned after the b + p + q column of the theoretical display area.
7. The method for driving the display panel according to claim 3,
the determining the head column and the tail column of the actual display area specifically comprises:
determining a position of the open area in the theoretical display area;
determining the number of columns of the actual display area according to the determined positions of the plurality of opening areas in the theoretical display area;
adjusting the position of the actual display area in the opening area so that the actual display area is located in the middle of the opening area.
8. The method for driving the display panel according to claim 7,
the determining the position of the opening area in the theoretical display area specifically includes:
collecting optical data by using a CCD camera, wherein the distance from the head column of a marked light-emitting region to the detection column is b1 columns, and the distance from the tail column of the marked light-emitting region to the detection column is b2 columns; the light-emitting region is the opening region,
setting the head column of the opening area to be x-b1 columns in the theoretical display area, and the tail column of the opening area to be x + b2 columns in the theoretical display area.
9. The method for driving the display panel according to claim 8, wherein the number of columns of the actual display area is designed to be s columns;
the determining the number of columns of the actual display area according to the determined positions of the plurality of open areas in the theoretical display area specifically includes:
determining the number of columns t of the actual display area to be s when the determined number of columns b1+ b2 of the plurality of open areas are all greater than or equal to s;
when any one of the measured column numbers b1+ b2 of the plurality of open areas is smaller than s columns, the column number t of the actual display area is determined to be the minimum value among the column numbers b1+ b2 of all open areas.
10. The method for driving the display panel according to claim 9,
the adjusting the position of the actual display area in the opening area so that the actual display area is located in the middle of the opening area specifically comprises:
determining the position of the first column of the actual display area in the theoretical display area as the x-b1+ (b1+ b2-t)/2 column;
and determining the position of the tail column of the actual display area in the theoretical display area as the x + b2- (b1+ b2-t)/2 column.
11. The method for driving the display panel according to claim 9,
the display information in the adjustment driving chip is specifically as follows:
storing the first column information x-b1+ (b1+ b2-t)/2 and the tail column information x + b2- (b1+ b2-t)/2 of the actual display area into a storage area register;
and the driving chip reads the first column information and the tail column information and redefines the number of the data line columns.
12. The method for driving the display panel according to claim 11,
the driving chip reads the first column information and the tail column information, and redefining the column number of the data lines specifically comprises: and setting the data lines positioned outside the first column and the tail column in the theoretical display area to be in a high-impedance state.
13. A display panel to which the method for driving a display panel according to any one of claims 1 to 12 is applied.
14. A display device characterized by comprising the display panel according to claim 13.
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| CN111489643A (en) * | 2020-04-15 | 2020-08-04 | 京东方科技集团股份有限公司 | Display module, display device and display area determination method |
| CN111816073B (en) * | 2020-07-06 | 2023-04-25 | 京东方科技集团股份有限公司 | Display module, display device and calibration method of display module |
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| JP2677167B2 (en) * | 1993-07-08 | 1997-11-17 | 日本電気株式会社 | Method for manufacturing liquid crystal display device with built-in drive circuit |
| JPH10320120A (en) * | 1997-05-14 | 1998-12-04 | Sony Corp | Selective display object selection device and pointing device |
| KR20130078116A (en) * | 2011-12-30 | 2013-07-10 | 엘지디스플레이 주식회사 | Apparatus and method for driving touch sensor using interpolation method |
| CN102611822B (en) * | 2012-03-14 | 2015-07-01 | 海信集团有限公司 | Projector and projection image rectifying method thereof |
| JP6309777B2 (en) * | 2014-02-10 | 2018-04-11 | シナプティクス・ジャパン合同会社 | Display device, display panel driver, and display panel driving method |
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| CN107621857A (en) * | 2017-09-30 | 2018-01-23 | 联想(北京)有限公司 | A kind of display screen, electronic equipment and light-intensity test method |
| CN108053803B (en) * | 2017-12-29 | 2020-01-10 | Oppo广东移动通信有限公司 | Display correction method, display correction device and display correction system of display module |
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