CN108231036B - Display panel, display screen, electronic device, display control method and storage device - Google Patents
Display panel, display screen, electronic device, display control method and storage device Download PDFInfo
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- CN108231036B CN108231036B CN201810026251.5A CN201810026251A CN108231036B CN 108231036 B CN108231036 B CN 108231036B CN 201810026251 A CN201810026251 A CN 201810026251A CN 108231036 B CN108231036 B CN 108231036B
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
- G09G5/10—Intensity circuits
Abstract
The application discloses a display control method of a display panel, which comprises the following steps: a signal receiving mode is opened for a plurality of data lines, and whether a target pixel unit which is short-circuited with a gate line corresponding to the adjacent pixel electrode in the same row exists or not is detected; if yes, determining the position of the target pixel unit; and setting the corresponding target pixel unit as preset brightness according to the position. In the display control method of the display panel, the plurality of data lines are not only used for outputting signals, but also used for receiving signals, and when the display panel works, the plurality of data lines are opened to receive a signal mode, and whether a target pixel unit short-circuited with a gate line corresponding to the adjacent pixel electrode in the same column exists or not is detected. If the target pixel unit with the short circuit is detected, the position of the target pixel unit is determined, and then the target pixel unit at the position is set to be preset brightness, so that abnormal bright spots are avoided, and the display effect of the display panel is improved. The application also provides a display panel, a display screen, an electronic device and a storage device.
Description
Technical Field
The present disclosure relates to the field of display technologies, and in particular, to a display panel, a display screen, an electronic device, a display control method, and a storage device.
Background
The display panel of an electronic device such as a smart phone or an Ipad includes a plurality of pixel units, each including a pixel electrode and a common electrode. The scanning signals of the scanning lines enable the switching tubes of the corresponding pixel electrodes to be conducted through the gate lines, so that the data signals generated by the data lines charge the pixel electrodes, and the common electrode is used for storing the capacitor. However, in the production and use processes of the display panel, a phenomenon that the pixel electrode is short-circuited with the gate corresponding to the pixel unit adjacent to the same column is easy to occur, because the gate line has a voltage difference with respect to the common electrode, the voltage of the short-circuited gate line is stored in the common electrode of the pixel unit with the short-circuited pixel electrode and the gate line, and then the short-circuited pixel unit is lighted to form a bright point, and when the short-circuited pixel unit needs to be lighted normally, the pixel unit cannot display normal brightness and forms an abnormal point under the influence of the stored voltage in the common electrode of the pixel unit, and further the display effect of the display panel is poor.
Disclosure of Invention
The application provides a display panel, a display screen, an electronic device, a display control method and a storage device, which can improve the display effect of the display panel.
The technical scheme adopted by the application is as follows: provided is a display control method of a display panel, including:
A signal receiving mode is opened for a plurality of data lines, and whether a target pixel unit which is short-circuited with a gate line corresponding to the adjacent pixel electrode in the same row exists or not is detected;
If yes, determining the position of the target pixel unit;
And setting the corresponding target pixel unit as preset brightness according to the position.
the application also provides a display panel, which comprises a plurality of pixel units, wherein each pixel unit is connected with a scanning line and a data line, a gate line is connected between each pixel unit and the scanning line, and the data line is connected with a data driver; a plurality of data lines are all opened to receive a signal mode; the data driver is used for detecting whether a target pixel unit which is short-circuited with a gate line corresponding to the adjacent pixel electrode in the same column exists or not, if so, the position of the target pixel unit is determined, and the target pixel unit at the position is set to be at preset brightness.
The application also provides a display screen which comprises the display panel.
The application also provides an electronic device comprising the display screen.
The present application also provides a device with a storage function, which stores program data that, when executed, implements a method as described above.
In the display control method of the display panel, the plurality of data lines are not only used for outputting signals, but also used for receiving signals, and when the display panel works, the plurality of data lines are opened to receive a signal mode, and whether a target pixel unit short-circuited with a gate line corresponding to the adjacent pixel electrode in the same column exists or not is detected. If the target pixel unit with the short circuit is detected, the position of the target pixel unit is determined, and then the target pixel unit at the position is set to be preset brightness, so that abnormal bright spots are avoided, and the display effect of the display panel is improved.
Drawings
in order to more clearly illustrate the technical solutions in the embodiments of the present application, 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 application, 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 display panel according to an embodiment of the present application;
FIG. 2 is a schematic structural diagram of a display panel according to another embodiment of the present application;
FIG. 3 is a flowchart illustrating an embodiment of a display control method for a display panel according to the present application;
FIG. 4 is a schematic structural diagram of an embodiment of an electronic device according to the present application;
FIG. 5 is a block diagram of an embodiment of a device with memory function.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the specific embodiments described herein are merely illustrative of the application and are not limiting of the application. It should be further noted that, for the convenience of description, only some of the structures related to the present application are shown in the drawings, not all of the structures. 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 application.
The terms "first", "second" and "third" in this application are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any indication of the number of technical features indicated. Thus, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of the feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless explicitly specifically limited otherwise. All directional indications (such as up, down, left, right, front, and rear … …) in the embodiments of the present application are only used to explain the relative positional relationship between the components, the movement, and the like in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indication is changed accordingly. Furthermore, the terms "include" and "have," as well as 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 elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
The following explains a driving control method of a display panel according to the present invention, and a display panel capable of executing the driving control method.
Referring to fig. 1, a display panel 10 according to an embodiment of the present invention includes a plurality of scan lines 13-1 to 13-M, a scan driver 14 connected to the scan lines 13-1 to 13-M, a plurality of data lines 15-1 to 15-M crossing the scan lines 13-1 to 13-M, a data driver 16 connected to the data lines 15-1 to 15-M, and a pixel unit 17 formed at a crossing position of the scan lines 13-1 to 13-M and the data lines 15-1 to 15-M. The scan driver 14 includes a plurality of sub-drivers 14-1 to 14-M, wherein each sub-driver 14-1 to 14-M is connected to the scan lines 13-1 to 13-M, each sub-driver 14-1 to 14-M is connected to the clock generator 12, receives the clock signal from the clock generator 12 and enables the scan lines 13-1 to 13-M to generate the scan signals in response to the trigger signal, and the data driver 16 generates the corresponding data signals on the data lines 15-1 to 15-M.
The pixel unit 17 includes a switching tube 171, a pixel electrode 172 and a common electrode 173, wherein the switching tube 171 includes a gate line 1712 connected to at least one of the scan lines 13-1 to 13-M, a first connection terminal 1714 connected to at least one of the data lines 15-1 to 15-M, and a second connection terminal 1716 connected to the pixel electrode 172. The common electrode is used to store capacitance when the pixel electrode 172 is charged. The scan signal applied by the scan driver 14 to at least one of the data lines 13-1 to 13-M connected thereto passes through the gate lines, so that the first connection terminal and the second connection terminal of the switching tube are turned on, and the pixel electrode 172 is charged by the data signal applied by the data driver 16 to at least one of the data lines 15-1 to 15-M connected thereto.
Between the pixel units 17 and 17a adjacent to each other in the same column, the pixel electrode of the pixel unit 17 in one row is short-circuited with the gate line 1712 of the pixel unit 17a in another adjacent row, so that the voltage on the gate line 1712 in another row is applied to the pixel unit 17 in the row, the capacitor is stored in the common electrode 173, so that a bright point is formed when the pixel unit 17 in the row does not need to be lighted, and when the pixel unit 17 needs to normally emit light, the brightness of the pixel unit 17 is affected, and abnormal brightness is formed.
Referring to fig. 2, the example of the gate line short between the pixel cell a in row 13-2 and column 15-1 and the pixel cell b in row 13-1 and column 15-1 is illustrated. It can be understood that in the display panel, an insulating layer (not shown) is disposed between the pixel units 17 in each row, but the insulating layer is thin, so that it is difficult to avoid a small local damage during the manufacturing and using processes of the display panel, for example, the insulating layer between the pixel units a and b is damaged, and the gate line 1712 of a is directly located between the first connection end 1714 and the second connection end 1716 of the pixel unit b. Meanwhile, in the production and use processes, some metal powder is easily left between the first connection terminal 1714 and the second connection terminal 1716, which easily causes the pixel electrode 172 of the pixel unit a to be short-circuited by the gate line 1712 of the pixel unit b, and the voltage of the gate line 1712 directly acts on the pixel unit a and is stored in the common electrode 173 of the pixel unit a, so that the pixel unit a is lighted when not being lighted, and the pixel unit a is influenced by the stored capacitance in the common electrode 173 to form abnormal brightness when being lighted.
The above explanation is made by taking an example in which the pixel electrode of the pixel unit in the 15-1 th column and the 13-2 nd row is short-circuited with the gate line of the pixel unit in the 13-1 th row (i.e., the previous row). In other embodiments, the pixel electrode of the pixel unit in the 15-1 th column and the 13-2 nd row may be shorted with the gate line of the pixel unit in the 13-3 rd row (i.e., the next row). Column 15-1, line 13-2 is only for explanation and is not intended to be limiting.
To overcome the problem that a certain pixel unit 17 forms an abnormal bright point due to a short circuit with the gate line 1712 of the pixel unit 17 in the same column and adjacent. The invention provides a display control method of the following display panel.
Referring to fig. 3, the display control method of the display panel according to an embodiment of the present invention includes the steps of:
101: and the data lines are all opened to receive a signal mode, and whether a target pixel unit which is short-circuited with the gate line corresponding to the adjacent pixel electrode in the same column exists or not is detected.
In the process that the display panel displays a frame of picture, the grid electrodes are opened line by line, each line comprises a plurality of pixel units, each pixel unit comprises three RGB sub-pixels, each sub-pixel is connected with a data line, and the plurality of data lines synchronously output signals under the action of a data driver to respectively write the corresponding signals into the corresponding sub-pixels, so that the pixel units are lightened. In the present application, the plurality of data lines are not only used for outputting signals to charge corresponding sub-pixels, but also used for receiving signals to detect whether a target pixel unit short-circuited with a gate line of a pixel unit in the same column and adjacent to the target pixel unit exists again. Namely, the data lines have two working modes, namely an output signal mode and a receiving signal mode.
Specifically, the voltage at which the data line charges the pixel electrode is different from the voltage at which the gate line is in the off state. And after the data line is opened to receive the signal mode, detecting whether a target pixel unit which is short-circuited with the gate line corresponding to the adjacent pixel electrode in the same column exists. If the voltage received by the data line is a normal voltage for charging the pixel electrode by the data line, it indicates that the pixel electrode of the pixel unit is not short-circuited with the gate line corresponding to the adjacent pixel electrode in the same column. If the received voltage is the voltage when the gate line is in the off state, it indicates that the pixel electrode of the pixel unit and the gate line corresponding to the same column and the adjacent pixel electrode are short-circuited. Specifically, the voltage charged by the data line to the pixel electrode is about +5V or about-5V, and the voltage of the gate line in the non-operating state is about-7V to-8V, so that whether the target pixel unit short-circuited with the gate line corresponding to the adjacent pixel electrode in the same column exists can be judged from the voltage received when the data line is in the receiving state.
it is understood that, in an embodiment, the step of detecting whether there is a target pixel unit short-circuited with the gate line corresponding to the adjacent pixel electrode in the same column includes: and if at least one of the data lines receives a preset voltage, the pixel electrode of the pixel unit corresponding to the data line is judged to be short-circuited with the gate line corresponding to the adjacent pixel electrode in the same column. Because each pixel unit in the same row is respectively connected with one data line, as long as one data line receives a preset voltage, the pixel unit correspondingly connected with the data line is short-circuited with the gate line corresponding to the adjacent pixel electrode in the same column. If a plurality of pixel units receive the preset voltage, the pixel units correspondingly connected with the data lines are all short-circuited with the gate lines corresponding to the adjacent pixel electrodes in the same column. Further, the preset voltage is a voltage corresponding to the gate line, that is, a voltage of the gate line of the pixel unit adjacent to the target pixel unit in the same column. Since other pixel units adjacent to the target pixel unit in the same column are in the non-lighting state during the detection, the preset voltage is a voltage at which the gate line is in the non-operating state, for example, a voltage in a range of-7V to-8V.
102: if yes, determining the position of the target pixel unit.
because each display panel is provided with a plurality of pixel units, the pixel units in the same column are connected with the same data line, and the data line charges the pixel electrode corresponding to the scanning line when the scanning line in which row outputs the scanning signal. Therefore, the position of the target pixel unit short-circuited with the gate lines of other pixel units needs to be determined, so that the brightness of the target pixel unit can be set according to the position of the target pixel unit. In one embodiment, the position of the target pixel unit is determined according to the data line and the intersection position of the scanning line corresponding to the data line and having the scanning signal output.
103: and setting the corresponding target pixel unit as preset brightness according to the position.
According to step 101, whether the target pixel unit exists is determined, if yes, step 102 determines the position of the target pixel unit, and step 103 sets the brightness of the target pixel unit at the position as the preset brightness.
Specifically, the position of the target pixel unit is determined, that is, the data line and the scan line corresponding to the target pixel unit are defined. As long as the scanning line outputs the scanning signal, the voltage output by the data line to the target pixel unit is 0, or a relatively small voltage, such as positive or negative 1-2v, so that the brightness of the target pixel unit is 0, or relatively weak brightness, which is imperceptible to human eyes, and the display effect is not affected, thereby improving the display effect of the display panel.
It can be understood that, in an embodiment, the step of setting the target pixel unit at the position to be the preset brightness specifically includes: and setting the target pixel unit to be preset brightness in each frame of picture. When a video or a plurality of pictures are played on the display panel or the display screen, a plurality of frames of pictures are required to be played to form a final display effect. Therefore, after determining that a certain pixel unit is the target pixel unit once, when the scanning line corresponding to the target pixel unit in each frame of picture provides the scanning signal, the data signal output by the data line corresponding to the target pixel unit is 0V voltage or any one of 0-2V voltage.
By adopting the method of each embodiment, the brightness of all the target pixel units which are short-circuited can be set to be 0 or the relatively weak brightness which is difficult to be distinguished by human eyes in each frame of picture, so that the abnormal brightness point is avoided, and the display effect of the display panel or a product applying the display panel is improved.
In one embodiment, the step of turning on the signal receiving mode for each of the plurality of data lines comprises: the data lines are switched to a signal receiving mode after the output signal mode is opened, and are switched back to the output signal mode within a preset time. That is to say, after sending out the data signal to the plurality of pixel units on one scanning line, the plurality of data lines are firstly switched from the signal output mode to the signal receiving mode in the period of time before sending out the data signal to the plurality of pixel units on the next scanning line or the other sub-pixels of the pixel units on the same scanning line, and then are switched to the signal output mode to charge the plurality of pixel units on the next scanning line or the other sub-pixels of the pixel units on the same scanning line. That is, during the process of charging each row of pixel units, the data lines are switched from the output signal mode to the receiving signal mode, and then switched back to the signal output mode, and the process is repeated.
Referring to fig. 1, the present application further provides a display panel 10, where the display panel 10 includes a plurality of pixel units 17, each pixel unit 17 is connected to a scan line 13-1 to 13-M and a data line 15-1 to 15-M, a gate line is connected between each pixel unit 17 and one of the scan lines 13-1 to 13-M, and the data line 15-1 to 15-M is connected to a data driver 14. In one embodiment, the plurality of data lines 15-1 to 15-M are all in the receive signal mode; the data driver 14 is configured to detect whether there is a target pixel unit short-circuited to the gate line 1712 corresponding to the adjacent pixel electrode 172 in the same column, and if so, determine the position of the target pixel unit, and set the target pixel unit at the position to a preset brightness.
specifically, in one embodiment, the data driver 14 determines that the pixel electrode 172 of the pixel unit 17 corresponding to at least one of the data lines 15-1 to 15-M is shorted with the gate line 1712 corresponding to the adjacent pixel unit 17a in the same row according to whether the at least one of the data lines 15-1 to 15-M receives the predetermined voltage. And confirming the position of the corresponding pixel unit according to the crossing position of the data line and the scanning line corresponding to the data line. So that the target pixel unit is set to the preset brightness every frame picture. The preset voltage and the preset brightness are the same as those described in the above embodiments, and are not described herein again.
Specifically, in one embodiment, two interfaces are provided between the data driver 14 and the data lines for switching the data lines back and forth between the output signal mode and the receive signal mode.
The present application also provides a display screen including the display panel described in the above embodiments.
referring to fig. 4, the present application further provides an electronic device 300, wherein the electronic device 300 has a display screen as described in the above embodiments. Specifically, the electronic device 300 in the present application may be a mobile phone, an IPad, a smart wearable device, a digital audio/video player, an electronic reader, a handheld game console, a vehicle-mounted electronic device, a digital camera, a printer, a flash drive, and the like.
Referring to fig. 5, the present application also provides a device 400 with a storage function, which stores program data that, when executed, implements the display control method of the display panel as described in the above embodiments.
It should be understood that the technical solution of the present invention essentially or partially contributes to the prior art, or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium, and including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor (processor) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above description is only for the purpose of illustrating embodiments of the present application and is not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings of the present application or are directly or indirectly applied to other related technical fields, are also included in the scope of the present application.
Claims (8)
1. A display control method of a display panel, comprising:
The method comprises the steps that a signal receiving mode is opened for a plurality of data lines, whether a target pixel unit which is short-circuited with a gate line corresponding to the same row and adjacent pixel electrodes exists or not is detected, wherein if at least one of the data lines receives a preset voltage, the pixel electrode of the pixel unit corresponding to the data line is judged to be short-circuited with the gate line corresponding to the same row and adjacent pixel electrodes, and the preset voltage is the voltage corresponding to the gate line corresponding to the same row and adjacent pixel electrodes;
If yes, determining the position of the target pixel unit, and confirming the position of the corresponding pixel unit according to the intersection position of the data line and the scanning line corresponding to the data line;
and setting the corresponding target pixel unit as preset brightness according to the position.
2. The display control method of claim 1, wherein the step of setting the target pixel unit at the position to be at a preset brightness specifically comprises:
And setting the target pixel unit to be preset brightness in each frame of picture.
3. The display control method of the display panel according to claim 1, wherein the preset luminance is zero.
4. The display control method of the display panel according to claim 1, wherein the step of turning on the reception signal mode for each of the plurality of data lines comprises:
the data lines are switched to a signal receiving mode after the output signal mode is opened, and are switched back to the output signal mode within a preset time.
5. A display panel is characterized by comprising a plurality of pixel units, wherein each pixel unit is connected with a scanning line and a data line, a gate line is connected between each pixel unit and the scanning line, and the data line is connected with a data driver; a plurality of data lines are all opened to receive a signal mode; the data driver is used for detecting whether a target pixel unit which is short-circuited with a gate line corresponding to the same row and the adjacent pixel electrode exists, wherein if at least one of the data lines receives a preset voltage, the pixel electrode of the pixel unit corresponding to the data line is judged to be short-circuited with the gate line corresponding to the same row and the adjacent pixel electrode, and the preset voltage is the voltage corresponding to the gate line corresponding to the same row and the adjacent pixel electrode; if yes, determining the position of the target pixel unit, and confirming the position of the corresponding pixel unit according to the intersection position of the data line and the scanning line corresponding to the data line; and setting the target pixel unit at the position to be preset brightness.
6. a display screen comprising the display panel of claim 5.
7. An electronic device, characterized in that it comprises a display screen as claimed in claim 6.
8. an apparatus having a storage function, characterized in that program data are stored which, when executed, implement the method according to any one of claims 1 to 4.
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| CN100481180C (en) * | 2004-05-20 | 2009-04-22 | 京瓷株式会社 | Image display device and driving method thereof |
| US7995012B2 (en) * | 2005-12-27 | 2011-08-09 | Semiconductor Energy Laboratory Co., Ltd. | Light emitting device |
| CN101399272B (en) * | 2007-09-27 | 2011-10-12 | 北京京东方光电科技有限公司 | Thin-film transistor array substrate |
| CN101409968A (en) * | 2007-10-08 | 2009-04-15 | 中华映管股份有限公司 | Light source drive circuit and control method |
| CN103077674B (en) * | 2013-01-29 | 2016-08-03 | 深圳市华星光电技术有限公司 | Liquid crystal display break detection circuit and detection method |
| CN105324808B (en) * | 2013-06-20 | 2018-02-02 | 三菱电机株式会社 | Image processing apparatus, method and image display device |
| CN103454792B (en) * | 2013-08-27 | 2016-04-20 | 北京京东方光电科技有限公司 | The bright spot detection method of liquid crystal panel |
| KR102387784B1 (en) * | 2014-12-29 | 2022-04-15 | 엘지디스플레이 주식회사 | Organic light emitting diode display device and method for repairing thereof |
| CN105118430B (en) * | 2015-08-31 | 2018-05-25 | 上海和辉光电有限公司 | Pixel-driving circuit and its driving method and display device |
| CN105551411B (en) * | 2016-02-22 | 2018-06-26 | 京东方科技集团股份有限公司 | A kind of short dot analysis method |
| CN105845085A (en) * | 2016-05-27 | 2016-08-10 | 京东方科技集团股份有限公司 | Pixel circuit, method for repairing pixel bright spot and display device |
| CN107516483B (en) * | 2017-09-28 | 2020-06-30 | 京东方科技集团股份有限公司 | Electrical detection method and device for device faults and display module |
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Address after: Changan town in Guangdong province Dongguan 523860 usha Beach Road No. 18 Applicant after: OPPO Guangdong Mobile Communications Co., Ltd. Address before: Changan town in Guangdong province Dongguan 523860 usha Beach Road No. 18 Applicant before: Guangdong Opel Mobile Communications Co., Ltd. |
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