CN110930933B - Special-shaped edge display device and display brightness adjusting method thereof - Google Patents
Special-shaped edge display device and display brightness adjusting method thereof Download PDFInfo
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- CN110930933B CN110930933B CN201811028279.9A CN201811028279A CN110930933B CN 110930933 B CN110930933 B CN 110930933B CN 201811028279 A CN201811028279 A CN 201811028279A CN 110930933 B CN110930933 B CN 110930933B
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- 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
- G09G3/30—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 using electroluminescent panels
- G09G3/32—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 using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
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Abstract
A profiled edge display device includes a display area. The display area comprises a regular display area and a special-shaped display area. The display device comprises a plurality of scanning lines, a plurality of data lines, a plurality of pixel units, a grid driver and a display driver. The gate driver outputs a scan signal switched between a first voltage and a second voltage to the scan line. Each scanning line corresponds to an equivalent descending straight line. The slopes of the equivalent descending lines corresponding to the scanning lines in the regular display area are the same and smaller than the slope of the equivalent descending line corresponding to each scanning line in the special-shaped display area. The display driver is used for adjusting the slope of the equivalent descending straight line corresponding to the scanning line in the special-shaped display area to be a preset slope. The invention also provides a display brightness adjusting method for the special-shaped edge display device.
Description
Technical Field
The invention relates to a special-shaped edge display device and a display brightness adjusting method thereof.
Background
The display panel comprises a plurality of scanning lines and a plurality of data lines. The scan lines and the data lines are orthogonally arranged and define a plurality of pixel units at intersections. Each pixel unit comprises at least one light emitting diode, a storage capacitor and a driving transistor. With the development of display technology, the shape of display panels is no longer limited to regular shapes such as rectangles, and irregular display panels with non-rectangular edges are gradually appearing. For example, four corners of the display panel are arranged in a round shape, or a groove is arranged on the upper portion or the lower portion of the display panel for mounting a headphone, a camera and other structures. Therefore, the display panel is further defined with a special-shaped display area and a regular display area. Due to the arrangement of the grooves, the length of the scanning lines corresponding to the special-shaped display area and the number of the pixel units corresponding to the scanning lines are different, so that the capacitance loads of the scanning lines in the special-shaped display area are different, the switching slopes of the scanning signals (namely, the scanning signals are switched from low level to high level) are different, and further, the capacitors are stored in the pixel units corresponding to the scanning lines. When the scanning signal is loaded, the scanning load corresponding to the special-shaped area causes the brightness of the special-shaped display area to be higher than that of the regular display area due to the grid voltage drop and the characteristic change of the driving transistor, so that the display brightness is different, and the performance of the display device is influenced.
Disclosure of Invention
Accordingly, there is a need for a special-shaped edge display device that can improve the uniformity of the display brightness.
It is also desirable to provide a method for adjusting display brightness that can improve the uniformity of display brightness.
A special-shaped edge display device comprises a display area. The display area comprises a regular display area and a special-shaped display area arranged at the edge of the regular display area. The display device includes:
a plurality of scanning lines extending in a first direction;
a plurality of data lines extending along the second direction and arranged to intersect the scan lines;
the pixel units are surrounded by the scanning lines and the data lines, and the pixel units positioned in the same row are electrically connected with the same scanning line;
at least one gate driver electrically connected to the scan lines for outputting scan signals to the scan lines; the scanning signal corresponding to each scanning line changes between a first voltage and a second voltage;
the display driver is electrically connected with the scanning lines through at least one grid driver and is used for detecting whether the current scanning lines are positioned in the special-shaped display area;
each scanning line corresponds to an equivalent descending straight line, and the equivalent descending straight line is used for describing the change process of descending the scanning signal corresponding to the scanning line from the second voltage to the first voltage; the slope of the equivalent descending line corresponding to the scanning line in the regular display area is a preset slope and is smaller than the slope of the equivalent descending line corresponding to each scanning line in the special-shaped display area;
the display driver detects whether the current scanning line is positioned in the special-shaped display area; if the current scanning line is located in the special-shaped display area, the display driver adjusts the designated parameters corresponding to the current scanning line to adjust the slope of the equivalent descending line corresponding to the current scanning line to be a preset slope, so that the brightness of the special-shaped display area is equal to the brightness of the regular display area.
A display brightness adjusting method is applied to a special-shaped edge display device. The display device defines a regular display area and a special-shaped display area. The display device comprises a plurality of scanning lines and a plurality of data lines; the scanning lines and the data lines are crossed to define a plurality of pixel units; loading a scanning signal on the scanning line; the scanning signal is switched between a first voltage and a second voltage; each scanning line corresponds to an equivalent descending straight line which is used for describing the change process of the scanning signal corresponding to the scanning line from the second voltage to the first voltage; the slope of each scanning line in the regular display area corresponding to the equivalent descending straight line is a preset slope and is smaller than the slope of each scanning line in the special-shaped display area corresponding to the equivalent descending straight line. The display brightness adjusting method comprises the following steps:
judging whether the current scanning line is positioned in the special-shaped display area or not;
if the current scanning line is located in the special-shaped display area, the designated parameter corresponding to the current scanning line is adjusted, so that the slope of the equivalent descending straight line corresponding to the current scanning line is a preset slope.
Compared with the prior art, by adopting the special-shaped edge display device and the display brightness adjusting method thereof, the slope of the equivalent descending straight line corresponding to the scanning line positioned in the special-shaped display area is the same as the slope of the equivalent descending straight line corresponding to the scanning line positioned in the regular display area by adjusting the designated parameters, so that the brightness difference between the special-shaped display area and the regular display area is reduced, and the display performance of the display device is improved.
Drawings
Fig. 1 is a block diagram of a display device according to a first embodiment of the invention.
Fig. 2 is a waveform diagram of the scan signals loaded on a portion of the scan lines corresponding to the first adjustment method in fig. 1.
Fig. 3 is a waveform diagram of the scan signals loaded on a portion of the scan lines corresponding to the second adjustment method in fig. 1.
Fig. 4 is a block diagram of a display device according to a second embodiment of the invention.
FIG. 5 is a flowchart illustrating a method for adjusting display brightness according to a preferred embodiment of the present invention.
Fig. 6 is a detailed flowchart of step S12 in fig. 5 according to the first embodiment of the present invention.
Fig. 7 is a detailed flowchart of step S12 in fig. 5 according to the second embodiment of the present invention.
Description of the main elements
Special-shaped display area 11
Non-display area 20
Scanning line S1-Sn
Data line D1-Dm
Gate driver 21
Connecting wire 24
Detection unit 231
Adjusting unit 232
Sub-areas 110, 110a, 110b
Step voltages Vs, Vs1-Vs4, Vs1 '-Vs 2', Vs1 "
First voltage VGL
Second voltage VGH
Equivalent descending straight lines L, L1, L2 and L3
Change slope K, K1, K2, K3
Predetermined time T
First time T1
Second time T2
Display brightness adjusting methods S11-S12, S121-S124
The following detailed description will further illustrate the invention in conjunction with the above-described figures.
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 protection scope of the present invention.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
In order to make the technical solutions of the present invention better understood, 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 protection scope of the present invention.
The terms "first," "second," and "third," etc. in the description and claims of the present invention and the above-described drawings are used for distinguishing between different objects and not for describing a particular order. Furthermore, the terms "comprises" and any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or modules is not limited to the listed steps or modules but may alternatively include other steps or modules not listed or inherent to such process, method, article, or apparatus.
Please refer to fig. 1, which shows a first embodiment of a special-shaped edge display device 1 according to the present invention.
A display panel of the display device 1 has a display area 10 and a non-display area 20 surrounding the display area 10 defined thereon. The display area 10 is a non-rectangular display area that defines a recess 102. In the present embodiment, the groove 102 has a substantially inverted trapezoidal shape. The display area 10 comprises a shaped display area 11 and a regular display area 12. The irregular display area 11 is disposed between the regular display area 12 and the non-display area 20, and has irregular edges. Wherein, the groove 102 is opened in the middle of the special-shaped display area 11, so that the inner side edge of the special-shaped display area 11 forms an irregular edge around the outer edge of the groove 102. In the present embodiment, the irregular display area 11 is disposed above the regular display area 12 and contacts with the edge of the groove 102. The display region 10 includes a plurality of scan lines S1-Sn parallel to each other and a plurality of data lines D1-Dm parallel to each other. Wherein n and m are positive integers. The plurality of scan lines S1-Sn extend along a first direction X, the plurality of data lines D1-Dm extend along a second direction Y perpendicular to the first direction, and respectively intersect the plurality of scan lines S1-Sn to define a grid, and the hollow portions of the grid define a plurality of pixel units 100 arranged in a matrix. It is understood that the plurality of scan lines S1-Sn and the plurality of data lines D1-Dm of the display device 1 of the present disclosure can be arranged as required, for example, the plurality of scan lines S1-Sn and the plurality of data lines D1-Dm are not orthogonally crossed but are obliquely crossed, which is not limited to the present embodiment.
At least one gate driver 21 and a display driver 23 are provided in the non-display region 20. The gate driver 21 is electrically connected to the plurality of scan lines S1-Sn for providing scan signals to the plurality of scan lines S1-Sn. The scan signal may be switched between a first voltage VGL and a second voltage VGH. The first voltage VGL is less than the second voltage VGH. Each scanning line S1-Sn corresponds to an equivalent descending straight line L. The equivalent falling straight line L is used to describe a change process of the scan signal corresponding to the scan line S1-Sn from the second voltage VGH to the first voltage VGL. The equivalent descending straight line L corresponding to the scanning line S (i +1) -Sn positioned in the regular display area 12 has a preset slope, and is smaller than the slope of the equivalent descending straight line L corresponding to the scanning line S1-Si positioned in the special-shaped display area 11. Each scan line S1-Sn corresponds to a different variation slope K according to the number of connected pixel units 100. The change slope K is a change rate corresponding to the switching of the scan signal between the first voltage VGL and the second voltage VGH. The change slopes K corresponding to the scan lines S1-Si in the irregular display area 11 are gradually decreased from top to bottom according to the arrangement order, and the change slopes K corresponding to the scan lines S (i +1) -Sn in the regular display area 12 are equal. As shown in fig. 2, the change slope K1 corresponding to the scan line S1 is greater than the change slope K2 corresponding to the scan line S2, and the change slope K2 corresponding to the scan line S2 is greater than the change slope K3 corresponding to the scan line S3. Each scan line S1-Sn has specified parameters. The specified parameters include at least one step voltage Vs and a predetermined time T. Wherein, each scanning line S1-Sn corresponds to the same step voltage Vs and the predetermined time T. In the present embodiment, each scan line S1-Sn corresponds to two step voltages Vs. In other embodiments, each scan line S1-Sn may correspond to one or more of the same number of staircase voltages Vs. The at least one stepped voltage Vs is between the first voltage VGL and the second voltage VGH. The scan signal corresponding to each scan line S1-Sn sequentially decreases from the second voltage VGH to the first voltage VGL at a change slope K according to at least one step voltage Vs, and is maintained at each at least one step voltage Vs for a predetermined time T. Due to the different change slopes K, the step curves corresponding to each scan line S1-Sn are different from each other, and the slopes of the equivalent descending straight lines L corresponding to each scan line S1-Sn are different. In the present embodiment, two gate drivers 21 are disposed in the non-display region 20, and are symmetrically disposed on both sides of the display region 10. In other embodiments, the non-display area 20 may be provided with one gate driver 21.
The display driver 23 is electrically connected to at least one of the gate driver 21 and the data lines D1-Dm via a plurality of connection lines 24. In the present embodiment, the display driver 23 is disposed at the bottom edge of the non-display area 20. The display driver 23 outputs data signals to the data lines D1-Dm to load the corresponding pixel unit 100 with the data signals, and controls at least one gate driver 21 to output scan signals to the scan lines S1-Sn. In this embodiment, the display driver 23 may further output a plurality of synchronization control signals to at least one gate driver 21. The plurality of synchronization control signals may include a horizontal synchronization (Vsync) signal, a vertical synchronization (Vsync) signal, and a data Enable (EN) signal, etc.
The display driver 23 is further configured to sequentially detect whether the current scan line Si is located in the special-shaped display area 11, and adjust the slope of the equivalent descending straight line corresponding to the current scan line Si to a predetermined slope when detecting that the current scan line Si is located in the special-shaped display area 11. Wherein i is a positive integer of 1 or more and n or less.
The first adjustment mode:
when the current scanning line Si is located in the irregular display area 11, the display driver 23 further detects the number of pixel units 100 corresponding to the current scanning line Si.
The display driver 23 further adjusts the number and voltage value of the step voltages Vs according to the number of the pixel units 100 corresponding to the current scan line Si. In the present embodiment, the larger the number of pixel units 100 corresponding to the current scan line Si is, the smaller the number of step voltages Vs is; conversely, the smaller the number of pixel units 100 corresponding to the current scan line Si, the greater the number of step voltages Vs. When the scan signal of the current scan line Si is decreased by the second voltage VGH, the display driver 23 controls the scan signal of the current scan line Si to be decreased by the second voltage VGH to each adjusted step voltage Vs in turn at a changing slope K according to the adjusted step voltage Vs, and maintains the adjusted step voltage Vs for a predetermined time T. In the present embodiment, the predetermined time T corresponding to each step voltage Vs is the same. It is to be understood that, in the present embodiment, the difference between the plurality of step voltages Vs is constant. In other embodiments, the difference between the plurality of step voltages Vs may be randomly set.
Specifically, referring to fig. 2, when the scan line S1 is detected, since the scan line S1 is located in the irregular-shaped display area 11, the display driver 23 detects the number of the pixel units 100 corresponding to the scan line S1, and adjusts the number of the pixel units 100 corresponding to the scan line S1 to 4 step voltages Vs1-Vs 4. When the scan signal of the scan line S1 is dropped by the second voltage VGH, the display driver 23 controls the scan signal of the scan line S1 to be dropped by the second voltage VGH to the stepped voltage Vs1 with the change slope K1, and to be maintained for a predetermined time T after reaching the stepped voltage Vs1, then to be dropped by the stepped voltage Vs1 to the stepped voltage Vs2 with the change slope K1, and to be maintained for the predetermined time T after reaching the stepped voltage Vs2, then to be dropped by the stepped voltage Vs2 to the stepped voltage Vs3 with the change slope K1, and to be maintained for the predetermined time T after reaching the stepped voltage Vs3, then to be dropped by the stepped voltage Vs3 to the stepped voltage Vs4 with the change slope K1, and to be maintained for the predetermined time T after reaching the stepped voltage Vs4, and then to be dropped by the stepped voltage Vs4 to the first voltage VGL with the change slope K1.
When detecting the scan line S2, since the scan line S2 is located in the irregular display region 11, the display driver 23 detects the number of pixel cells 100 corresponding to the scan line S2, and adjusts one step voltage Vs to two step voltages Vs1 '-Vs 2' according to the number of pixel cells 100 corresponding to the scan line S2. When the scan signal of the scan line S2 is dropped by the second voltage VGH, the display driver 23 controls the scan signal of the scan line S2 to be dropped by the second voltage VGH to the stepped voltage Vs1 'with a change slope K2 and to be maintained for a predetermined time T after reaching the stepped voltage Vs 1', then to be dropped by the stepped voltage Vs1 'to the stepped voltage Vs 2' with a change slope K2 and to be maintained for a predetermined time T after reaching the stepped voltage Vs2 ', and then to be dropped by the stepped voltage Vs 2' to the first voltage VGL with a change slope K2. Wherein, the change slope K2 is smaller than the change slope K1.
When detecting the scan line S3, since the scan line S3 is located in the regular display area 12, the display driver 23 controls the scan signal of the scan line S3 to drop from the second voltage VGH to the step voltage Vs ″ with the change slope K3, and to maintain for a predetermined time T after reaching the step voltage Vs ″ and then to drop from the step voltage Vs ″ to the first voltage VGL with the change slope K3. Wherein, the change slope K3 is smaller than the change slope K2.
In the prior art, if the number and voltage values of the step voltages are not adjusted, since the change slope K corresponding to the scan lines S1-S2 in the special-shaped display area 11 is greater than the change slope K corresponding to the scan line S3 in the regular display area 12, the scan signals of the scan lines S1-S2 in the special-shaped display area 11 are rapidly reduced to the first voltage VGL, and the storage voltages of the capacitances of the pixel units 100 corresponding to the scan lines S1-S2 are different from the storage voltages of the capacitances of the pixel units 100 corresponding to the scan lines S3-Sn, so that the luminance of the special-shaped display area 11 is different from the luminance of the regular display area 12. The display driver 23 is utilized to adjust the designated parameters so that the slopes of the equivalent descending straight lines L corresponding to the scanning lines S1-S2 in the special-shaped display area 11 are the same as the slopes of the equivalent descending straight lines L corresponding to the scanning lines S3 in the regular display area 12, thereby reducing the difference between the storage voltages on the capacitors of the pixel units 100 corresponding to the scanning lines S1-S2 in the special-shaped display area 11, and further making the luminance of the special-shaped display area 11 be the same as the luminance of the regular display area 12.
The second adjustment mode is as follows:
the display driver 23 further adjusts the predetermined time T according to the number of the pixel units 100 corresponding to the current scan line Si. In the present embodiment, the larger the number of pixel units 100 corresponding to the current scan line Si is, the shorter the predetermined time T is; conversely, the smaller the number of pixel units 100 corresponding to the current scan line Si, the longer the predetermined time T. When the scan signal of the current scan line Si is decreased by the second voltage VGH, the display driver 23 controls the scan signal of the current scan line Si to be decreased by the second voltage VGH to each step voltage Vs in turn at a change slope K according to the adjusted predetermined time T and maintains the adjusted predetermined time T at the step voltage Vs. In the present embodiment, the step voltages Vs corresponding to each of the scan lines S1-Sn are the same. It is understood that, at the plurality of step voltages Vs corresponding to each scan line S1-Sn, the difference between the plurality of step voltages Vs is constant. In other embodiments, the difference between the plurality of step voltages Vs may be randomly set. In the present embodiment, the predetermined time T may be 0.
Specifically, referring to fig. 3, when the scan line S1 is detected, since the scan line S1 is located in the irregular-shaped display area 11, the display driver 23 detects the number of the pixel units 100 corresponding to the scan line S1, and adjusts the predetermined time T to be the first time T1 according to the number of the pixel units 100 corresponding to the scan line S1. When the scan signal of the scan line S1 is dropped by the second voltage VGH, the display driver 23 controls the scan signal of the scan line S1 to be dropped by the second voltage VGH to the step voltage Vs1 with a change slope K1, and maintains the first time T1 after reaching the step voltage Vs1, then dropped by the step voltage Vs1 to the step voltage Vs2 with a change slope K1, and maintains the first time T1 after reaching the step voltage Vs2, and then dropped by the step voltage Vs2 to the first voltage VGL with a change slope K1. Wherein the first time T1 is greater than the predetermined time T.
When detecting the scan line S2, since the scan line S2 is located in the irregular display region 11, the display driver 23 detects the number of the pixel cells 100 corresponding to the scan line S2, and adjusts the predetermined time T to the second time T2 according to the number of the pixel cells 100 corresponding to the scan line S2. When the scan signal of the scan line S2 is dropped by the second voltage VGH, the display driver 23 controls the scan signal of the scan line S2 to be dropped by the second voltage VGH to the step voltage Vs1 with a change slope K2, and to be maintained for a second time T2 after reaching the step voltage Vs1, then to be dropped by the step voltage Vs1 to the step voltage Vs2 with a change slope K2, and to be maintained for a second time T2 after reaching the step voltage Vs2, and then to be dropped by the step voltage Vs2 to the first voltage VGL with a change slope K2. The second time T2 is less than the first time T1 and greater than the predetermined time T.
When detecting the scan line S3, since the scan line S3 is located in the regular display area 12, the display driver 23 controls the scan signal of the scan line S3 to drop from the second voltage VGH to the step voltage Vs1 with the variation slope K3, to be maintained for a predetermined time T after reaching the step voltage Vs1, then to drop from the step voltage Vs1 to the step voltage Vs2 with the variation slope K3, to be maintained for the predetermined time T after reaching the step voltage Vs1, and then to drop from the step voltage Vs2 to the first voltage VGL with the variation slope K3. Wherein the predetermined time T is less than the second time T2.
If the predetermined time T is not adjusted, the change slope K corresponding to the scan lines S1-S2 in the irregular display area 11 is greater than the change slope K corresponding to the scan line S3 in the regular display area 12, so that the scan signals of the scan lines S1-S2 in the irregular display area 11 are rapidly decreased to the first voltage VGL, and the storage voltage of the capacitors of the pixel units 100 corresponding to the scan lines S1-S2 is different from the storage voltage of the capacitors of the pixel units 100 corresponding to the scan lines S3-Sn, thereby the luminance of the irregular display area 11 is different from the luminance of the regular display area 12. The display driver 23 is utilized to adjust the predetermined time T, so that the slope of the equivalent descending straight line L corresponding to the scanning lines S1-S2 in the special-shaped display area 11 is the same as the slope of the equivalent descending straight line L corresponding to the scanning line S3 in the regular display area 12, thereby reducing the difference between the storage voltages on the capacitors of the pixel units 100 corresponding to the scanning lines S1-S2 in the special-shaped display area 11, and further making the luminance of the special-shaped display area 11 be the same as the luminance of the regular display area 12.
In summary, in the display device 1 with the above structure, the slope of the equivalent descending straight line L corresponding to the scan line S1-Si in the special-shaped display area 11 is the same as the slope of the equivalent descending straight line L corresponding to the scan line S (i +1) -Sn in the regular display area 12 by adjusting the step voltage Vs or the predetermined time T, so that the luminance difference between the special-shaped display area 11 and the regular display area 12 is reduced, and the display performance of the display device 1 is improved.
Please refer to fig. 4, which is a block diagram of a second embodiment of the irregular edge display device 2. The display device 2 is substantially identical to the display device 1, and the main differences are that: the display driver 23 adjusts the manner in which the parameters are specified. In the second embodiment, elements having the same functions as those in the first embodiment are named the same, and are not described again.
In the second embodiment, the shaped display area 11 is further divided in the first direction to form a plurality of sub-areas 110. The recess 102 opens in the middle of each sub-region 110 such that the inner edge of each sub-region 110 forms an irregular edge around the outer edge of the recess 102. Wherein, each sub-area 110 corresponds to different designated parameters. The designated parameter may be the step voltage Vs or the predetermined time T.
The third adjustment mode:
when the designated parameter is the step voltage Vs, each sub-region 110 corresponds to different numbers and different voltage values of the step voltages Vs. Each sub-region 110 corresponds to a different number and different step voltages Vs. In the present embodiment, the special-shaped display area 11 includes a sub area 110a and a sub area 110 b. The number of the pixel cells 100 corresponding to the sub-region 110b is greater than the number of the pixel cells 100 corresponding to the sub-region 110a, and the number of the step voltages Vs corresponding to the sub-region 110b is set to be less than the number of the step voltages Vs corresponding to the sub-region 110 a.
The display driver 23 further detects a sub-region corresponding to the current scan line Si, obtains the number and voltage value of the step voltages Vs corresponding to the sub-region 110, and adjusts the slope of the equivalent descending straight line L of the current scan line Si to a predetermined slope according to the obtained step voltages Vs. The specific manner is the same as the first adjustment manner, and therefore, the description is omitted.
The fourth adjustment mode:
when the designated parameter is the predetermined time T, each of the sub-regions 110 corresponds to a different predetermined time T. In the present embodiment, the special-shaped display area 11 includes a sub area 110a and a sub area 110 b. Since the number of the pixel cells 100 corresponding to the sub-region 110b is greater than the number of the pixel cells 100 corresponding to the sub-region 110a, the second time T2 corresponding to the sub-region 110b is set to be less than the first time T1 corresponding to the sub-region 110 a.
The display driver 23 further detects the sub-region 110 corresponding to the current scan line Si, obtains the predetermined time T corresponding to the sub-region 110, and adjusts the slope of the equivalent descending straight line L of the current scan line Si to a predetermined slope. In the present embodiment, each scan line S1-Sn corresponds to the same number and voltage value of step voltages Vs. The specific manner is the same as the second adjustment manner, and therefore, the description is omitted again.
In summary, in the display device 1 with the above structure, the step voltage Vs or the predetermined time T is adjusted such that the slope of the equivalent descending straight line L corresponding to the scan line S1-Si in the special-shaped display area 11 is the same as the slope of the equivalent descending straight line L corresponding to the scan line S (i +1) -Sn in the regular display area 12, so as to reduce the brightness difference between the special-shaped display area 11 and the regular display area 12, and further improve the display performance of the display device 1. Meanwhile, the calculation amount of the gate driver 21 is reduced by customizing the numerical values of different designated parameters corresponding to different sub-regions 110 by the user.
Please refer to fig. 5, which is a flowchart illustrating a brightness adjustment method. The display brightness adjustment method is applied to the display device 1. A display panel of the display device 1 has a display area 10 and a non-display area 20 surrounding the display area 10 defined thereon. The display area 10 is a non-rectangular display area that defines a recess 102. In the present embodiment, the groove 102 has a substantially inverted trapezoidal shape. The display area 10 comprises a shaped display area 11 and a regular display area 12. The irregular display area 11 is disposed between the regular display area 12 and the non-display area 20, and has irregular edges. In the present embodiment, the irregular display area 11 is disposed above the regular display area 12 and contacts with the edge of the groove 102. The display region 10 includes a plurality of scan lines S1-Sn parallel to each other and a plurality of data lines D1-Dm parallel to each other. The plurality of scan lines S1-Sn extend along a first direction X, the plurality of data lines D1-Dm extend along a second direction Y perpendicular to the first direction, and respectively intersect the plurality of scan lines S1-Sn to define a grid, and the hollow portions of the grid define a plurality of pixel units 100 arranged in a matrix. Each scanning line S1-Sn corresponds to an equivalent descending straight line L. The equivalent falling straight line L is used to describe a change process of the scan signal corresponding to the scan line S1-Sn from the second voltage VGH to the first voltage VHL. The equivalent descending straight line L corresponding to the scanning line S (i +1) -Sn in the regular display area 12 has a predetermined slope, and is smaller than the slope of the equivalent descending straight line L corresponding to the scanning line S1-Si in the special-shaped display area 11. Each scan line S1-Sn corresponds to a different variation slope K according to the number of connected pixel units 100. The change slope K is a change rate corresponding to the switching of the scan signal between the first voltage VGL and the second voltage VGH. The change slopes K corresponding to the scan lines S1-Si in the irregular display area 11 are gradually decreased from top to bottom according to the arrangement order, and the change slopes K corresponding to the scan lines S (i +1) -Sn in the regular display area 12 are equal. As shown in fig. 3, the change slope K1 corresponding to the scan line S1 is greater than the change slope K2 corresponding to the scan line S2, and the change slope K2 corresponding to the scan line S2 is greater than the change slope K3 corresponding to the scan line S3. Each scan line S1-Sn has specified parameters. The specified parameters include at least one step voltage Vs and a predetermined time T. Wherein, each scanning line S1-Sn corresponds to the same step voltage Vs and the predetermined time T. The at least one stepped voltage Vs is between the first voltage VGL and the second voltage VGH. The scan signal corresponding to each scan line S1-Sn sequentially decreases from the second voltage VGH to the first voltage VGL at a change slope K according to at least one step voltage Vs, and is maintained at each at least one step voltage Vs for a predetermined time T. Due to the different change slopes K, the step curves corresponding to each scan line S1-Sn are different from each other, and the slopes of the equivalent descending straight lines L corresponding to each scan line S1-Sn are different. The display brightness adjusting method comprises the following steps:
s11, it is determined whether the current scanning line Si is located in the irregular display area 11.
S12, if the current scan line Si is located in the special-shaped display area 11, adjusting the designated parameter corresponding to the current scan line Si, so that the slope of the equivalent descending line L corresponding to the current scan line Si is a predetermined slope. The specified parameters include the step voltage Vs and the predetermined time T.
Please refer to fig. 6, which is a detailed flowchart of step S12 of the first embodiment.
S121, the number of pixel units 100 connected to the current scanning line Si is detected.
And S122, adjusting the designated parameters according to the number of the pixel units 100 connected with the current scanning line Si. When the designated parameter is the step voltage Vs, the number and voltage value of the step voltage Vs are adjusted. The more the number of the pixel units 100 corresponding to the current scanning line Si is, the less the number of the step voltages Vs is; conversely, the smaller the number of pixel units 100 corresponding to the current scan line Si, the greater the number of step voltages Vs. When the scan signal of the current scan line Si is decreased by the second voltage VGH, the display driver 23 controls the scan signal of the current scan line Si to be decreased by the second voltage VGH to each adjusted step voltage Vs in turn at a changing slope K according to the adjusted step voltage Vs, and maintains the adjusted step voltage Vs for a predetermined time T. In the present embodiment, the predetermined time T corresponding to each step voltage Vs is the same. It is to be understood that, in the present embodiment, the difference between the plurality of step voltages Vs is constant. In other embodiments, the difference between the plurality of step voltages Vs may be randomly set.
And when the designated parameter is the preset time T, adjusting the length of the preset time T. The more the number of the pixel units 100 corresponding to the current scanning line Si is, the shorter the predetermined time T is; conversely, the smaller the number of pixel units 100 corresponding to the current scan line Si, the longer the predetermined time T. When the scan signal of the current scan line Si is decreased by the second voltage VGH, the display driver 23 controls the scan signal of the current scan line Si to be decreased by the second voltage VGH to each step voltage Vs in turn at a change slope K according to the adjusted predetermined time T and maintains the adjusted predetermined time T at the step voltage Vs. The step voltages Vs corresponding to each scan line S1-Sn are the same. It is understood that, at the plurality of step voltages Vs corresponding to each scan line S1-Sn, the difference between the plurality of step voltages Vs is constant. In the present embodiment, the difference between the plurality of step voltages Vs may be randomly set.
In summary, by using the display brightness adjustment method with the above structure, the scanning signals loaded on the scanning lines S1-S2 located in the special-shaped display area 11 are controlled to gradually decrease in a step-wise manner when the voltage decreases, so as to reduce the brightness difference between the special-shaped display area 11 and the regular display area 12, and further improve the display performance of the display device 1.
Please refer to fig. 7, which is a detailed flowchart of step S12 of the second embodiment.
The shaped display area 11 is further divided in the first direction to form a plurality of sub-areas 110. Each sub-region 110 corresponds to a different designated parameter. The designated parameter may be the step voltage Vs or the predetermined time T.
And S123, detecting the sub-area 110 corresponding to the current scanning line Si. In the present embodiment, the special-shaped display area 11 includes a sub-area 110a and a sub-area 110 b. In other embodiments, the number of sub-regions 110 may be set as desired.
And S124, acquiring the corresponding designated parameters of the sub-region 110.
When the designated parameter is the step voltage Vs, the number and voltage value of the step voltage Vs are adjusted. The number of the pixel cells 100 corresponding to the sub-region 110b is greater than the number of the pixel cells 100 corresponding to the sub-region 110a, and the number of the step voltages Vs corresponding to the sub-region 110b is set to be less than the number and voltage values of the step voltages Vs corresponding to the sub-region 110 a. In the present embodiment, the predetermined time T corresponding to each step voltage Vs is the same. It is to be understood that, in the present embodiment, the difference between the plurality of step voltages Vs is constant. In other embodiments, the difference between the plurality of step voltages Vs may be randomly set.
And when the designated parameter is the preset time T, adjusting the length of the preset time T. The number of the pixel units 100 corresponding to the sub-region 110b is greater than the number of the pixel units 100 corresponding to the sub-region 110a, and the second time T2 corresponding to the sub-region 110b is less than the first time T1 corresponding to the sub-region 110a, and both of them are greater than the predetermined time T. Each scan line S1-Sn corresponds to the same number and voltage value of step voltages Vs.
In summary, with the display brightness adjustment method with the above structure, the step voltage Vs or the predetermined time T is adjusted such that the slope of the equivalent descending straight line L corresponding to the scan line S1-Si in the special-shaped display region 11 is the same as the slope of the equivalent descending straight line L corresponding to the scan line S (i +1) -Sn in the regular display region 12, thereby reducing the brightness difference between the special-shaped display region 11 and the regular display region 12 and further improving the display performance of the display device 1. Meanwhile, the calculation amount of the gate driver 21 is reduced by customizing the numerical values of different designated parameters corresponding to different sub-regions 110 by a user.
It will be appreciated by those skilled in the art that the above embodiments are illustrative only and not intended to be limiting, and that suitable modifications and variations may be made to the above embodiments without departing from the true spirit and scope of the invention.
Claims (10)
1. A kind of heterotype edge display device, including the display area; the display area comprises a regular display area and a special-shaped display area arranged at the edge of the regular display area; the display device includes:
a plurality of scanning lines extending in a first direction;
a plurality of data lines extending in a second direction and crossing the scan lines;
the pixel units are surrounded by the scanning lines and the data lines, and the pixel units positioned in the same row are electrically connected with the same scanning line;
at least one gate driver electrically connected to the scan lines for outputting scan signals to the scan lines; the scanning signal corresponding to each scanning line changes between a first voltage and a second voltage;
the display driver is electrically connected with the scanning line through the at least one grid driver and is used for detecting whether the scanning line is positioned in the special-shaped display area or not;
each scanning line corresponds to an equivalent descending straight line, and the equivalent descending straight line is used for describing a change process of descending the scanning signal corresponding to the scanning line from the second voltage to the first voltage; the slope of the scanning lines corresponding to the equivalent descending straight line in the regular display area is a preset slope and is smaller than the slope of each scanning line corresponding to the equivalent descending straight line in the special-shaped display area;
the display driver detects whether the current scanning line is positioned in the special-shaped display area; if the current scanning line is located in the special-shaped display area, the display driver adjusts the designated parameter corresponding to the current scanning line so as to adjust the slope of the equivalent descending line corresponding to the current scanning line to be the preset slope, and the brightness of the special-shaped display area is equal to the brightness of the regular display area; the specified parameters include at least one step voltage and a predetermined time; the step voltage is between the first voltage and the second voltage; each step voltage corresponds to a change slope and is different from each other; when the scanning signal corresponding to the scanning line is decreased from the second voltage to the first voltage, the scanning signal corresponding to the scanning line starts to decrease from the second voltage according to the corresponding change slope and sequentially passes through each step voltage until reaching the first voltage, and the scanning signal is maintained at each step voltage for the preset time.
2. The shaped edge display device of claim 1, wherein: the display driver further detects the number of the pixel units connected with the current scanning line, and the display driver adjusts the specified parameter according to the number of the pixel units connected with the scanning line, so that the slope of the current scanning line corresponding to the equivalent descending straight line is the preset slope.
3. The shaped edge display device of claim 1, wherein: the special-shaped display area is further divided into a plurality of sub-areas along the first direction; the sub-areas at different positions correspond to different specified parameters; the display driver further detects a sub-region where the current scanning line is located, and the display driver adjusts the designated parameter according to the sub-region where the scanning line is located, so that the slope of the current scanning line corresponding to the equivalent descending straight line is the preset slope.
4. The shaped edge display of claim 2 or 3, wherein: the specified parameters are the number and the voltage value of the at least one step voltage.
5. The shaped edge display of claim 2 or 3, wherein: the specified parameter is the length of the predetermined time.
6. A display brightness adjusting method is applied to a special-shaped edge display device; the display device defines a regular display area and a special-shaped display area; the display device comprises a plurality of scanning lines and a plurality of data lines; the scanning lines and the data lines intersect to define a plurality of pixel units; loading a scanning signal on the scanning line; the scan signal is switched between a first voltage and a second voltage; each scanning line corresponds to an equivalent descending straight line, and the equivalent descending straight line is used for describing the change process of the scanning signal corresponding to the scanning line from the second voltage to the first voltage; the slope of each scanning line in the regular display area, which corresponds to the equivalent descending straight line, is a preset slope and is smaller than the slope of each scanning line in the special-shaped display area, which corresponds to the equivalent descending straight line; the display brightness adjusting method comprises the following steps:
judging whether the current scanning line is positioned in the special-shaped display area;
if the current scanning line is located in the special-shaped display area, adjusting the designated parameters corresponding to the current scanning line so that the slope of the equivalent descending straight line corresponding to the current scanning line is the preset slope; the specified parameters include at least one step voltage and a predetermined time; the step voltage is between the first voltage and the second voltage; each step voltage corresponds to a change slope and is different from each other; when the scanning signal corresponding to the scanning line is decreased from the second voltage to the first voltage, the scanning signal corresponding to the scanning line starts to decrease from the second voltage according to the corresponding change slope and sequentially passes through each step voltage until reaching the first voltage, and the scanning signal is maintained at each step voltage for the preset time.
7. The display luminance adjustment method according to claim 6, characterized in that: the step of adjusting the designated parameter corresponding to the current scan line includes:
detecting the number of the pixel units connected with the current scanning line;
and adjusting the designated parameters according to the number of the connected pixel units according to the current scanning line.
8. The display luminance adjustment method according to claim 6, characterized in that: the special-shaped display area is further divided into a plurality of sub-areas; the sub-areas at different positions correspond to different specified parameters; the step of adjusting the designated parameter corresponding to the current scan line includes:
detecting a sub-area where the current scanning line is located;
and adjusting the designated parameters according to the sub-region where the current scanning line is located.
9. The display luminance adjustment method according to claim 7 or 8, characterized in that: the specified parameters are the number and the voltage value of the at least one step voltage.
10. The display luminance adjustment method according to claim 7 or 8, characterized in that: the specified parameter is the length of the predetermined time.
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