CN108364600B - Display control method and display panel - Google Patents
Display control method and display panel Download PDFInfo
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- CN108364600B CN108364600B CN201810139542.5A CN201810139542A CN108364600B CN 108364600 B CN108364600 B CN 108364600B CN 201810139542 A CN201810139542 A CN 201810139542A CN 108364600 B CN108364600 B CN 108364600B
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- 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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Abstract
The invention relates to a display control method and a corresponding display panel. The display control method adopts forward sequential scanning and reverse sequential scanning to be carried out alternately, and can avoid the phenomenon of isolated afterglow points. Further, the gradation value of the original display data of the normally lit light emitting element is selectively adjusted in consideration of the influence of the afterglow point on the luminance of the normally lit light emitting element. Therefore, the purpose of improving the display quality of the display panel can be achieved.
Description
Technical Field
The invention belongs to the technical field of display control, and particularly relates to a display control method and a display panel.
Background
Please refer to fig. 1, which is a schematic structural diagram of a conventional scanning display panel. As shown in fig. 1, it includes n × m light emitting elements arranged in rows and columns, a row selection circuit, and a column driving circuit. Wherein the light emitting elements are arranged at the intersections of the row lines L1, …, Ln and the column lines C1, …, Cm, the anodes of the light emitting elements of the same row are connected to the same output terminal of the row selection circuit via the same row line, e.g. Ln, and the cathodes of the light emitting elements of the same column are connected to the same output terminal of the column driving circuit via the same column line, e.g. Cm, each row line having a parasitic capacitance Cp to ground, respectively.
The conventional control system usually adopts a sequential round-robin scanning manner, and for a display panel with n scans (i.e. n row lines), the conventional method is to start the first scan, then drive the second scan until the last scan (nth scan), and then start the first scan until the nth scan again, and so on, which can be seen in fig. 2 in particular.
If the light emitting elements are turned on when a certain scan comes, due to the influence of the parasitic capacitance Cp to ground of the row line of the scanning display panel, the charges stored in the parasitic capacitance Cp to ground of the row line of the previous scan can drive the light emitting elements sharing the column line with the light emitting elements which need to be turned on normally in the previous scan to be turned on slightly, and this phenomenon is called afterglow. According to the scanning mode of the above-mentioned prior art control system, the afterglow point corresponding to the 2 nd scan appears at the 1 st scan, the afterglow point corresponding to the 3 rd scan appears at the 2 nd scan, and so on, since the last scan (nth scan) is the previous scan of the first scan, the afterglow point corresponding to the 1 st scan appears at the nth scan, and the nth scan is far from the 1 st scan, and the afterglow point generated at the nth scan is very abrupt, this will cause that the afterglow point far from the normal lighting area is easily seen in the black background area of the picture playing the black background, which affects the viewing experience, and these points are called as isolated afterglow points. Fig. 3 illustrates this phenomenon by using an 8-scan display panel playing a black background picture as an example, where capital letters a-H, M-P, R-W are light-emitting elements that need to be lit normally, and small letters a-H, M-P, R-W with gray backgrounds represent afterglow points, where isolated afterglow points are points a and points M, n, o, P. Further, as for the non-isolated afterglow points b-h, r-w, since they are adjacent to and in the same column as the normally lit light emitting element and have a certain luminance, the normally lit light emitting element appears to be brighter.
Disclosure of Invention
Therefore, the embodiment of the invention provides a display control method, which can achieve the technical effects of avoiding isolated afterglow points and overcoming the problem of partial brightness of a normally-lighted light-emitting element.
Specifically, the display control method provided by the embodiment of the present invention is suitable for being applied to a display panel, where the display panel includes a row selection circuit, a column driving circuit, a plurality of light emitting elements, N row lines, and a plurality of column lines arranged to intersect with the N row lines, the N row lines are connected to the row selection circuit, the plurality of column lines are connected to the column driving circuit, the plurality of light emitting elements are connected to the N row lines and the plurality of column lines, and N is a positive integer and greater than 2. The display control method comprises the following steps of: (a) the row selection circuit receives a row selection signal input to the display panel, decodes the received row selection signal to scan a 1 st row line, and directly transmits display data input to the display panel to the column driving circuit without performing gray scale adjustment when the 1 st row line is scanned so as to drive and control light emitting elements connected with the 1 st row line in the plurality of light emitting elements; (b) the row selection circuit receives a row selection signal input to the display panel and decodes the received row selection signal to perform forward sequential scanning on a 2 nd row line to an (N-1) th row line, and transmits display data input to the display panel to the column driving circuit after performing gray scale adjustment on the display data in the forward sequential scanning process so as to drive and control light emitting elements connected with the 2 nd to the (N-1) th row lines in the plurality of light emitting elements, wherein gray scale values of the display data corresponding to the light emitting elements which are normally lighted in the forward sequential scanning process are reduced; (c) the row selection circuit receives a row selection signal and decodes the received row selection signal to perform a first scan and a second scan consecutively for an nth row line, the display data input to the display panel is subjected to gray scale adjustment during the first scanning and then transmitted to the column driving circuit to drive and control the light emitting elements connected with the Nth row line in the plurality of light emitting elements, and directly transmitting the display data input to the display panel to the column driving circuit without performing gray scale adjustment during the second scanning to drive and control the light emitting elements connected to the Nth row line among the plurality of light emitting elements, wherein the gray scale value of the display data corresponding to the light emitting elements that are normally lit at the first scanning is reduced, but the gray scale value of the display data corresponding to the light emitting elements that are normally lit at the second scanning remains unchanged; (d) the row selection circuit receives a row selection signal input to the display panel and decodes the received row selection signal to perform reverse sequential scanning on a 2 nd row line to an (N-1) th row line, and in the reverse sequential scanning process, performs gray scale adjustment on display data input to the display panel and then transmits the display data to the column driving circuit to drive and control light emitting elements connected with the 2 nd to the (N-1) th row lines in the plurality of light emitting elements, wherein gray scale values of the display data corresponding to the normally-lit light emitting elements in the reverse sequential scanning process are reduced; and (e) the row selection circuit receives a row selection signal input to the display panel, decodes the received row selection signal to scan the 1 st row line, and transmits display data input to the display panel to the column driving circuit after performing gray scale adjustment on the display data when the 1 st row line is scanned so as to drive and control a light emitting element connected with the 1 st row line in the plurality of light emitting elements.
In addition, an embodiment of the present invention provides a display panel, including: the LED display device comprises a row selection circuit, a column driving circuit, a plurality of light emitting elements, N row lines and a plurality of column lines, wherein the column lines are arranged in a crossed mode with the N row lines, the N row lines are connected with the row selection circuit, the column lines are connected with the column driving circuit, the light emitting elements are connected with the N row lines and the column lines, and N is a positive integer and is larger than 2. The display panel further includes: a selective gray scale adjustment module connected to the column driving circuit and configured to:
when the row selection circuit receives a row selection signal input to the display panel and decodes the received row selection signal to scan a 1 st row line, display data input to the display panel is directly transmitted to the column driving circuit without performing gray scale adjustment to drive and control light emitting elements connected with the 1 st row line among the plurality of light emitting elements;
in a process that the row selection circuit receives a row selection signal input to the display panel and decodes the received row selection signal to perform forward sequential scanning on a 2 nd row line to an (N-1) th row line, performing gray scale adjustment on display data input to the display panel and then transmitting the display data to the column driving circuit to drive and control light emitting elements connected with the 2 nd to the (N-1) th row lines in the plurality of light emitting elements, wherein a gray scale value of display data corresponding to a normally-lit light emitting element in the forward sequential scanning process is reduced;
during the first and second consecutive scans of the nth row line by the row select circuit receiving and decoding the row select signal, the display data input to the display panel is subjected to gray scale adjustment at the first scanning and then transmitted to the column driving circuit to drive and control the light emitting elements connected to the Nth row line among the plurality of light emitting elements, and the display data input to the display panel is directly transmitted to the column driving circuit without being subjected to gray scale adjustment at the second scanning to drive and control the light emitting elements connected to the Nth row line among the plurality of light emitting elements, wherein the gray scale value of the display data corresponding to the light emitting elements that are normally lit at the first scanning is reduced, but the gray scale value of the display data corresponding to the light emitting elements that are normally lit at the second scanning remains unchanged;
in a process that the row selection circuit receives a row selection signal input to the display panel and decodes the received row selection signal to perform reverse sequential scanning on a 2 nd row line to an (N-1) th row line, performing gray scale adjustment on display data input to the display panel and then transmitting the display data to the column driving circuit to drive and control light emitting elements connected with the 2 nd to the (N-1) th row lines in the plurality of light emitting elements, wherein a gray scale value of display data corresponding to a normally-lit light emitting element in the reverse sequential scanning process is reduced; and
when the row selection circuit receives a row selection signal input to the display panel and decodes the received row selection signal to scan the 1 st row line, the display data input to the display panel is subjected to gray scale adjustment and then is transmitted to the column driving circuit to drive and control the light-emitting elements connected with the 1 st row line in the plurality of light-emitting elements.
The technical scheme of the invention can have one or more of the following advantages or beneficial effects: the isolated afterglow point phenomenon can be avoided by alternating the forward sequential scanning and the reverse sequential scanning, and in addition, the gray value of the original display data of the normally lit light emitting element is selectively adjusted/compensated in consideration of the influence of the afterglow point on the luminance of the normally lit light emitting element. Thus, the purpose of improving the display quality can be achieved.
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 description of the embodiments are briefly introduced 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 structural diagram of a conventional scanning display panel.
Fig. 2 is a schematic diagram of a conventional line scanning method.
Fig. 3 is a schematic diagram of a conventional display effect using the line scanning method shown in fig. 2.
Fig. 4 is a schematic structural diagram of a display panel according to an embodiment of the invention.
Fig. 5 is a schematic view of a line scanning method according to an embodiment of the invention.
Fig. 6 is a schematic diagram of a display effect of the embodiment of the invention by using the line scanning method shown in fig. 5.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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 scope of the present invention.
Referring to fig. 4, a display panel 40 according to an embodiment of the present invention includes: a row selection circuit 41, a column driving circuit 43, a plurality of light emitting elements 45, N row lines L1, L2, …, Ln, a plurality of column lines C1, …, Cm, and a selective gray scale adjustment module 47. N is a positive integer greater than 2, for example, when the display panel 40 is an 8-scan display panel, the value of N is 8; when the display panel 40 is a 16-scan display panel, the value of N is 16; when the display panel 40 is a 32-scan display panel, the value of N is 32; and so on.
The N row lines L1, L2, …, Ln are connected to the row selection circuit 41, the column lines C1, …, Cm are connected to the column driving circuit 43, the N row lines L1, L2, …, Ln and the column lines C1, …, Cm are arranged crosswise, and the light emitting elements 45 are connected to the N row lines L1, L2, …, Ln and the column lines C1, …, Cm and are arranged at the intersections of the N row lines L1, L2, …, Ln and the column lines C1, …, Cm in a row-column manner.
More specifically, row select circuit 41 comprises, for example, a 3-8 decoder chipset, and the 3-8 decoder chipset is coupled to N row lines L1, L2, …, Ln. The column driving circuit 43 includes a serial-in parallel-out type constant current source driving chipset, and the serial-in parallel-out type constant current source driving chipset is connected to a plurality of column lines C1, …, Cm; the series-in parallel-out constant current source driving chipset is, for example, an MBI5025 chip series. The light emitting element 45 is, for example, a light emitting diode, and has an anode connected to the row line and a cathode connected to the column line. The selective gray scale adjustment module 47 is connected to the row selection signal input terminal of the row selection circuit 41 and the display data input terminal of the column driving circuit 43, for example, the display data input to the display panel 40 is first input to the selective gray scale adjustment module 47, and then input to the column driving circuit 43 through the selective gray scale adjustment module 47; the row selection signal input to the display panel 40 is input to both the row selection circuit 41 and the selective tone adjustment block 47 as a control signal of the selective tone adjustment block 47 to determine whether to adjust the tone value of the input display data. Furthermore, the row selection signal can be a 2-bit digital signal, a 3-bit digital signal, a 4-bit digital signal or a 5-bit digital signal, which respectively correspond to 4-scan, 8-scan, 16-scan and 32-scan display panels.
A display control method in the embodiment of the present invention will be described in detail below with reference to fig. 4, 5, and 6. The display control method includes, for example, steps (a) to (e) performed in this order.
Step (a): the row selecting circuit 41 receives a row selecting signal inputted to the display panel 40 and decodes the received row selecting signal to scan the 1 st row line L1, and when the 1 st row line L1 is scanned, the selective gray scale adjusting module 47 directly transmits the display data inputted to the display panel 40 to the column driving circuit 43 without performing gray scale adjustment to drive and control the light emitting element 45 connected to the 1 st row line L1; the normally lit light-emitting elements here are represented by the capital letter a in fig. 6, for example.
Step (b): the row selection circuit 41 receives the row selection signal inputted to the display panel 40 and decodes the received row selection signal to perform forward sequential scanning (e.g., from top to bottom in fig. 5) on the 2 nd row line L2 to the (N-1) th row line, and the selective gray scale adjustment module 47 performs gray scale adjustment on the display data inputted to the display panel 40 during the forward sequential scanning and then transmits the display data to the column driving circuit 43 to drive and control the light emitting elements 45 connected to the 2 nd to the (N-1) row lines, wherein the gray scale value of the display data corresponding to the normally lit light emitting elements (e.g., represented by the capital letters B-G, R-W in fig. 6) during the forward sequential scanning is reduced because the afterglow points represented by the small letters B-g, r-W in fig. 6 have a certain brightness, which are respectively adjacent to the normally-lit light-emitting elements represented by the capital letters B-G, R-W, so that if the gray-scale value of the display data corresponding to the normally-lit light-emitting elements is not adjusted, human eyes can perceive that the actual brightness (equal to the sum of the brightness corresponding to the gray-scale value and the brightness of the afterglow point adjacent to the gray-scale value) of the normally-lit light-emitting elements is slightly bright, and therefore, the gray-scale value of the display data corresponding to the normally-lit light-emitting elements is reduced here in this embodiment, so that the actual brightness of the normally-lit light-emitting elements is consistent with the target brightness corresponding to the gray-scale value of the display data before being adjusted, thereby achieving the purpose of improving the display quality. The gray value reduction here may be a reduction of one gray level or a plurality of gray levels, and may be specifically set in accordance with the luminance of an afterglow point of the display panel 40 or an empirical value.
Step (c): the row selection circuit 41 receives and decodes the row selection signal to perform the first scan (corresponding to the nth scan in fig. 5) and the second scan (corresponding to the 1 st scan in fig. 5) consecutively for the nth row line Ln, the selective gray scale adjustment module 47 performs gray scale adjustment on the display data inputted to the display panel 40 during the first scanning, and then transmits the display data to the column driving circuit 43 to drive and control the light emitting elements 45 connected to the nth row line, and the selective gray scale adjustment module 47 directly transmits the display data inputted to the display panel 40 to the column driving circuit 43 without performing gray scale adjustment in the second scanning to drive and control the light emitting elements 45 connected to the N-th row line Ln, wherein the gray scale value of the display data corresponding to the light emitting elements that are normally lit at the first scanning is reduced, but the gray scale value of the display data corresponding to the light emitting elements that are normally lit at the second scanning remains unchanged; for example, in the first scanning, the capital letter H in fig. 6 represents a normally lit light emitting element, and an afterglow point represented by the small letter H exists in a row above the capital letter H, so that the gray value of the corresponding display data needs to be reduced by the selective gray scale adjustment module 47 to make the actual brightness and the target brightness consistent; in the second scanning, the gray value of the corresponding display data does not need to be adjusted because the previous line of the normally lighted light-emitting elements has no afterglow point.
Step (d): the row selection circuit 41 receives the row selection signal inputted to the display panel 40 and decodes the received row selection signal to perform reverse sequential scanning (e.g., from bottom to top in fig. 5) on the 2 nd row line L2 to the (N-1) th row line, and the selective gray scale adjustment module 47 performs gray scale adjustment on the display data inputted to the display panel 40 during the reverse sequential scanning and then transmits the display data to the column driving circuit 43 to drive and control the light emitting elements 45 connected to the 2 nd to the (N-1) row lines, wherein the gray scale value of the display data corresponding to the normally lit light emitting elements (e.g., represented by the capital letter B-G, R-W in fig. 6) during the reverse sequential scanning is reduced because the afterglow point represented by the gray square under the capital letter B-G, R-W in fig. 6 has a certain brightness, which are respectively adjacent to the normally-lit light-emitting elements represented by the capital letters B-G, R-W, so that if the gray-scale value of the display data corresponding to the normally-lit light-emitting elements is not adjusted, human eyes can perceive that the actual brightness (equal to the sum of the brightness corresponding to the gray-scale value and the brightness of the afterglow point adjacent to the gray-scale value) of the normally-lit light-emitting elements is slightly bright, and therefore, the gray-scale value of the display data corresponding to the normally-lit light-emitting elements is reduced here in this embodiment, so that the actual brightness of the normally-lit light-emitting elements is consistent with the target brightness corresponding to the gray-scale value of the display data before being adjusted, thereby achieving the purpose of improving the display quality.
A step (e): the row selecting circuit 41 receives a row selecting signal input to the display panel 40, decodes the received row selecting signal to scan the 1 st row line L1, and when the 1 st row line L1 is scanned, the selective gray scale adjusting module 47 performs gray scale adjustment on the display data input to the display panel 40, and then transmits the display data to the column driving circuit 43 to drive and control the light emitting elements 45 connected with the 1 st row line L1; taking the case where the capital letter A, M-P in fig. 6 represents a normally-lit light-emitting element, which corresponds to the nth scan from bottom to top, there is an afterglow point represented by a gray square in the next row, and therefore the gray value of the corresponding display data needs to be reduced by the selective gray scale adjustment module 47 so that the actual brightness thereof is consistent with the target brightness.
Thereafter, if it is necessary to continue the scanning, the display control method of the present embodiment further includes, for example, step (f) immediately after step (e).
Specifically, the step (f) is as follows: the row selection circuit 41 receives a row selection signal inputted to the display panel 40 and decodes the received row selection signal to rescan the 1 st row line L1, and when the 1 st row line L1 is rescanned, the selective gray scale adjustment module 47 directly transmits the display data inputted to the display panel 40 to the column driving circuit 43 without gray scale adjustment to drive and control the light emitting elements 45 connected to the 1 st row line L1. Thereafter, steps (b) to (e) may be performed again.
As can be seen from fig. 4 and 6, the afterglow point due to the parasitic capacitance Cp to ground of the row line is always adjacent to the normally lit light emitting element, and thus there is no afterglow at an isolated point. Furthermore, considering the situation that the afterglow point and the normally lit light emitting device are distributed in two rows, the afterglow point has a certain brightness, so that the actual brightness perceived by human eyes of the normally lit light emitting device is consistent with the target brightness corresponding to the gray value of the original display data, the gray value of the original display data is adjusted to realize the brightness compensation, such as reduction, and further achieve the purpose of improving the display quality.
Finally, it should be noted that, in order to implement the forward sequential scanning and the reverse sequential scanning alternately, for example, the display control card at the front end of the display panel 40 alternately outputs the row selection signal required for the forward sequential scanning and the row selection signal required for the reverse sequential scanning; it is understood that, in order to cooperate with the forward sequential scanning and the reverse sequential scanning alternately, the providing mode of the display data input to the display panel 40 also needs to be adjusted adaptively, that is, it is required to ensure that the currently provided display data is the display data required by the current scanning, so that the correct display can be realized. Taking the row selection signal as a 3-bit digital signal as an example, the corresponding single-scan process is, for example, 8-scan (i.e., corresponding to n-8); in the scan 1 to scan 8 from top to bottom (forward sequential scan) in fig. 5, the row selection signals are, for example, "000", "001", "010", "011", "100", "101", "110", and "111" in this order; in the scanning from the 1 st to the 8 th in fig. 5, the row selection signals are, for example, "111", "110", "101", "100", "011", "010", "001", and "000" in sequence, i.e., the row selection signal sequence required in the reverse scanning is equivalent to the inversion of the row selection signal sequence required in the forward scanning.
The principle and the implementation of the display control method and the display panel of the present invention are explained herein by applying specific examples, and the above description of the embodiments is only used to help understand the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention, and the scope of the present invention should be subject to the appended claims.
Claims (9)
1. A display control method is suitable for being applied to a display panel, the display panel comprises a row selection circuit, a column driving circuit, a plurality of light-emitting elements, N row lines and a plurality of column lines arranged in a crossed mode with the N row lines, the N row lines are connected with the row selection circuit, the plurality of column lines are connected with the column driving circuit, the plurality of light-emitting elements are connected with the N row lines and the plurality of column lines, N is a positive integer and is larger than 2; the display control method is characterized by comprising the following steps of:
(a) the row selection circuit receives a row selection signal input to the display panel, decodes the received row selection signal to scan a 1 st row line, and directly transmits display data input to the display panel to the column driving circuit without performing gray scale adjustment when the 1 st row line is scanned so as to drive and control light emitting elements connected with the 1 st row line in the plurality of light emitting elements;
(b) the row selection circuit receives a row selection signal input to the display panel, decodes the received row selection signal to perform forward sequential scanning on a 2 nd row line to an (N-1) th row line, performs gray scale adjustment on display data input to the display panel in the forward sequential scanning process, and then transmits the display data to the column driving circuit to drive and control light emitting elements connected with the 2 nd to the (N-1) th row lines in the plurality of light emitting elements, wherein gray scale values of the display data corresponding to the light emitting elements which are normally lighted in the forward sequential scanning process are reduced;
(c) the row selection circuit receives a row selection signal and decodes the received row selection signal to perform a first scan and a second scan consecutively for an nth row line, the display data input to the display panel is subjected to gray scale adjustment during the first scanning and then transmitted to the column driving circuit to drive and control the light emitting elements connected with the Nth row line in the plurality of light emitting elements, and directly transmitting the display data input to the display panel to the column driving circuit without performing gray scale adjustment during the second scanning to drive and control the light emitting elements connected to the Nth row line among the plurality of light emitting elements, wherein the gray scale value of the display data corresponding to the light emitting elements that are normally lit at the first scanning is reduced, but the gray scale value of the display data corresponding to the light emitting elements that are normally lit at the second scanning remains unchanged;
(d) the row selection circuit receives a row selection signal input to the display panel, decodes the received row selection signal to perform reverse sequential scanning on a 2 nd row line to an (N-1) th row line, performs gray scale adjustment on display data input to the display panel in the reverse sequential scanning process, and then transmits the display data to the column driving circuit to drive and control light emitting elements connected with the 2 nd to the (N-1) th row lines in the plurality of light emitting elements, wherein gray scale values of the display data corresponding to the light emitting elements which are normally lit in the reverse sequential scanning process are reduced; and
(e) the row selection circuit receives a row selection signal input to the display panel, decodes the received row selection signal to scan the 1 st row line, and transmits display data input to the display panel to the column driving circuit after performing gray scale adjustment on the display data when the 1 st row line is scanned so as to drive and control light emitting elements connected with the 1 st row line in the plurality of light emitting elements.
2. The display control method according to claim 1, further comprising, after the step (e), the step of:
(f) the row selection circuit receives a row selection signal input to the display panel and decodes the received row selection signal to rescan the 1 st row line, and when the 1 st row line is rescanned, the display data input to the display panel is directly transmitted to the column driving circuit without performing gray scale adjustment to drive and control a light emitting element connected with the 1 st row line among the plurality of light emitting elements.
3. The display control method of claim 1, wherein the row selection signal is a 2-bit digital signal, a 3-bit digital signal, a 4-bit digital signal, or a 5-bit digital signal.
4. The display control method of claim 1, wherein the row select circuit comprises a 3-8 decoder chipset, and the 3-8 decoder chipset is connected to the N row lines.
5. The display control method according to claim 1, wherein the column driving circuit includes a serial-in parallel-out type constant current source driving chipset, and the serial-in parallel-out type constant current source driving chipset is connected to the plurality of column lines.
6. A display panel, comprising: the light-emitting device comprises a row selection circuit, a column driving circuit, a plurality of light-emitting elements, N row lines and a plurality of column lines, wherein the column lines are arranged in a crossed manner with the N row lines, the N row lines are connected with the row selection circuit, the column lines are connected with the column driving circuit, the light-emitting elements are connected with the N row lines and the column lines, and N is a positive integer and is greater than 2; characterized in that, the display panel still includes:
a selective gray scale adjustment module connected to the column driving circuit and configured to:
when the row selection circuit receives a row selection signal input to the display panel and decodes the received row selection signal to scan a 1 st row line, display data input to the display panel is directly transmitted to the column driving circuit without performing gray scale adjustment to drive and control light emitting elements connected with the 1 st row line among the plurality of light emitting elements;
in a process that the row selection circuit receives a row selection signal input to the display panel and decodes the received row selection signal to perform forward sequential scanning on a 2 nd row line to an (N-1) th row line, performing gray scale adjustment on display data input to the display panel and then transmitting the display data to the column driving circuit to drive and control light emitting elements connected with the 2 nd to the (N-1) th row lines in the plurality of light emitting elements, wherein a gray scale value of display data corresponding to a normally-lit light emitting element in the forward sequential scanning process is reduced;
in the course of the row selection circuit receiving a row selection signal and decoding the received row selection signal to successively perform the first scanning and the second scanning for the nth row line, the display data input to the display panel is subjected to gray scale adjustment at the first scanning and then transmitted to the column driving circuit to drive and control the light emitting elements connected to the Nth row line among the plurality of light emitting elements, and the display data input to the display panel is directly transmitted to the column driving circuit without being subjected to gray scale adjustment at the second scanning to drive and control the light emitting elements connected to the Nth row line among the plurality of light emitting elements, wherein the gray scale value of the display data corresponding to the light emitting elements that are normally lit at the first scanning is reduced, but the gray scale value of the display data corresponding to the light emitting elements that are normally lit at the second scanning remains unchanged;
in a process that the row selection circuit receives a row selection signal input to the display panel and decodes the received row selection signal to perform reverse sequential scanning on a 2 nd row line to an (N-1) th row line, performing gray scale adjustment on display data input to the display panel and then transmitting the display data to the column driving circuit to drive and control light emitting elements connected with the 2 nd to the (N-1) th row lines in the plurality of light emitting elements, wherein a gray scale value of display data corresponding to a normally-lit light emitting element in the reverse sequential scanning process is reduced; and
when the row selection circuit receives a row selection signal input to the display panel and decodes the received row selection signal to scan the 1 st row line, the display data input to the display panel is subjected to gray scale adjustment and then is transmitted to the column driving circuit to drive and control the light-emitting elements connected with the 1 st row line in the plurality of light-emitting elements.
7. The display panel of claim 6, wherein the row select signal is a 2-bit digital signal, a 3-bit digital signal, a 4-bit digital signal, or a 5-bit digital signal.
8. The display panel of claim 6, wherein the row select circuit comprises a 3-8 decoder chipset, and the 3-8 decoder chipset connects the N row lines.
9. The display panel according to claim 6, wherein the column driving circuit includes a serial-in parallel-out constant current source driving chipset, and the serial-in parallel-out constant current source driving chipset is connected to the plurality of column lines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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