CN111312142B - Driving method and device for improving image display quality - Google Patents
Driving method and device for improving image display quality Download PDFInfo
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- CN111312142B CN111312142B CN202010124092.XA CN202010124092A CN111312142B CN 111312142 B CN111312142 B CN 111312142B CN 202010124092 A CN202010124092 A CN 202010124092A CN 111312142 B CN111312142 B CN 111312142B
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- 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
Abstract
The invention discloses a driving method and a device for improving the image display quality, wherein the method is applied to a display panel, the display panel comprises a first group of GIP circuits and a second group of GIP circuits, each GIP circuit in the first group of GIP circuits and each GIP circuit in the second group of GIP circuits are connected one by one according to the sequence, the connected GIP circuits are connected with pixels of the display panel, the first group of GIP circuits and the second group of GIP circuits are divided into a plurality of groups with the same quantity, and the driving method comprises the following steps: transmitting the light-emitting data in pulses through a subset of the first set of GIP circuits; after the light emitting data of the subgroup are sent, black inserting data are sent through the subgroup of the second group of GIP circuits connected with the subgroup; after the black insertion data is transmitted, the luminous data is transmitted through the next subgroup of the first group of GIP circuits. The invention can reduce the blurring of dynamic pictures (MPRT value is reduced) and improve the image quality.
Description
Technical Field
The present invention relates to the field of display driving technologies, and in particular, to a driving method and apparatus for improving image display quality.
Background
With the development of technology, the requirements on the display are increasing nowadays, so people pay more attention to the display quality, however, many liquid crystal displays have a blurring effect when displaying dynamic pictures, and uncomfortable experiences can be produced for viewers. As shown in fig. 1, three key causes of the blurred image are shown in comparison between a group of normal images and a group of motion blurred images, which are respectively: (1) image update frequency, (2) gray-to-gray-scale reaction time, and (3) panel driving mode. The present panel also uses these three methods to improve the dynamic picture and measure the dynamic image response time (MPRT) value for comparison, the lower the value is, the better. Currently, improving the motion blur image is a research and development project of a panel factory research and development unit.
Disclosure of Invention
Therefore, it is desirable to provide a driving method and apparatus for improving the image display quality, which solves the problem of image blurring generated in the dynamic picture by the conventional panel.
In order to achieve the above object, the present inventors provide a driving method for improving image display quality, which is applied to a display panel, wherein the display panel includes a first group of GIP circuits and a second group of GIP circuits, each GIP circuit of the first group of GIP circuits and each GIP circuit of the second group of GIP circuits are connected one by one according to a sequential order, and then connected to a pixel of the display panel, and the first group of GIP circuits and the second group of GIP circuits are equally divided into a plurality of groups with the same number, and the driving method includes the following steps:
transmitting the light-emitting data in pulses through a subset of the first set of GIP circuits;
after the light emitting data of the subgroup are sent, black inserting data are sent through the subgroup of the second group of GIP circuits connected with the subgroup;
after the black insertion data is transmitted, the luminous data is transmitted through the next subgroup of the first group of GIP circuits.
Further, the integral of the pulse type brightness and time is equal to the integral of the continuous type brightness and time, so that the display brightness of the display panel is kept unchanged.
Further, the time of the black insertion data retention is the same as the time of the light emission data retention.
Further, the display panel includes a GIP transfer line, where the GIP transfer line is connected to a subset of the first set of GIP circuits, and then connected to a subset of the second set of GIP circuits connected to the subset, and connected to a next subset of the first set of GIP circuits according to the connection mode until all the subsets are connected, and the GIP transfer line is used to control whether the GIP circuit data is sent to the pixels of the display panel.
Further, the method comprises the following steps:
during the picture display time of one frame,
all subgroups of the first set of GIP circuits complete one-time transmission of light-emitting data and all subgroups of the second set of GIP circuits complete one-time transmission of black-inserting data.
The invention provides a display device with high image quality, which comprises a display panel and a driving unit which are connected with each other, wherein the driving unit is used for executing the driving method according to any embodiment of the invention.
Compared with the prior art, the technical scheme adopts a pulse mode to send the luminous data, so that the duration of the luminous data can be reduced, then black data is inserted and sent in the remaining time of one frame of picture, the unchanged brightness can be ensured, the sending time of the luminous data is shortened, the blurring of a dynamic picture can be relieved (MPRT value is reduced), and the image quality is improved.
Drawings
FIG. 1 is a schematic diagram showing the comparison of a normal frame and a motion blur frame according to the background art;
fig. 2 is a schematic diagram of brightness versus time when the repluse and Hold Type are driven according to the embodiment;
FIG. 3 is a schematic layout diagram of two sets of GIP circuits according to an embodiment;
FIG. 4 is a schematic diagram showing the turn-on sequence of the GIP circuit according to the embodiment;
fig. 5 is a schematic diagram of transmitting light emitting and black inserting data simultaneously in one frame according to an embodiment.
Detailed Description
In order to describe the technical content, constructional features, achieved objects and effects of the technical solution in detail, the following description is made in connection with the specific embodiments in conjunction with the accompanying drawings.
Referring to fig. 2 to 5, the present embodiment provides a driving method for improving image display quality, which is applied to a display panel, wherein the display panel includes a first group of GIP circuits (GIP-A1 …) and a second group of GIP circuits (GIP-A2 …), each GIP circuit in the first group of GIP circuits and each GIP circuit in the second group of GIP circuits are sequentially connected one by one, for example, GIP-A1 is connected with GIP-B1, GIP-A2 is connected with GIP-B2, and then connected with pixels of the display panel. For the existing display panel, only one group of GIP circuits is generally used for switching on one by one at the Gate, so that the luminous data are written into the pixels one by one, and the luminous data are maintained until the same Gate is switched on again for updating the luminous data. The invention only needs to add a group of GIP circuits with the same structure as the original one, so that the original one pixel is connected with one GIP circuit to be connected with two GIP circuits. The hardware connection mode of sending the light-emitting data and the black insertion data in this embodiment is the same as the original single light-emitting data, and only the timing and the value of the data sending are different. And then the first group of GIP circuits and the second group of GIP circuits are divided in the same way, namely the two groups of GIP circuits are divided in the same way. Each group of GIP circuits is divided into a plurality of identical number of subgroups. As shown, 1000 stages of GIP circuits may be divided into 4 subgroups, each subgroup being 250 stages of GIP circuits.
The driving method comprises the following steps: transmitting the light-emitting data in pulses through a subset of the first set of GIP circuits; after the light emitting data of the subgroup are sent, black inserting data are sent through the subgroup of the second group of GIP circuits connected with the subgroup; the black insertion data continues for a period of time, and after the black insertion data is transmitted, the luminous data is transmitted through the next subgroup of the first group of GIP circuits. That is, the GIP circuits connected to each other in the first group GIP and the second group GIP do not send data (light emitting data or black inserting data) at the same time, but the light emitting data is kept to be written to the black inserting data (0 gray scale data), and then the black inserting data is kept to be written again until the light emitting data of the same line is continuously written as above-mentioned cycle. In practice, the Gate may be turned on one by one during driving, and the first group of GIP circuits write one by one light-emitting data. Then Gate is turned on one by one, and the second group of GIP circuits write light emitting data one by one. Since the present invention has the function of transmitting the black insertion data and the function of transmitting the light emitting data in stages, in order to avoid darkening the display of the panel, the brightness of the light emitting data should be increased so that the display brightness of the panel is the same as before.
As shown in fig. 2, the conventional driving method is a continuous (Hold type) driving method for LCD and OLED, but a pulsed (Impulse type) driving method for CRT is used. The brightness and time integral of the two driving modes are the same; CRT (MPRT value) is about 2 to 3ms, LCD (MPRT value) is about 15 to 20ms, OLED (MPRT value) is about 5 to 8ms, and CRT driving type pulse type is an important factor for making MPRT value small. In this embodiment, the continuous (Hold type) driving is changed to the Impulse type driving, so as to improve the motion blur.
In particular, as shown in fig. 3, for example, an AA Area (Active Area) with 1000 rows of pixels provides 1000 pieces of light emission data GIP-a and 1000 pieces of black insertion data GIP-B, and only GIP-a or only GIP-B is controlled to be turned on to perform black insertion operation. GIP-A and GIP-B were divided into 4 subgroups. For example, the emission data is first turned on from the first panel of stages 1 to 250 GIP-a. After the light emitting data is sent, the GIP-B of 1 to 250 stages is started to insert black data. After the black insertion data of the GIP-B of 1 to 250 stages is transmitted, the GIP-a of 250 to 500 stages of the second group starts to transmit the light emitting data. After the light emitting data is sent, the GIP-B of 250 to 500 grades is started to insert black data. After the black insertion data transmission of the GIP-B of 250 to 500 stages is completed, the GIP-a of the third 500 to 750 stages is turned on to transmit the light emitting data. After the light emitting data is sent, the GIP-B of 500 to 750 stages is started to insert black data. After the black insertion data transmission of the GIP-B of 500 to 750 stages is completed, the GIP-A of 750 to 1000 stages of the fourth subgroup is turned on to transmit the light emitting data. After the light emitting data is sent, the GIP-B of 750 to 1000 grades is started to insert black data. The GIP on timing is shown in fig. 4, the picture display result is shown in fig. 5, the display in one frame of one picture is divided into 8 stages, each stage is realized by opening GIP-a or GIP-B through a region, writing of black insertion data is performed in one picture in the 8 stages according to the human eye integration principle, the perception of human eyes is the same as that of continuous light emission in one frame, and the MPRT value can be reduced in a similar Impulse driving mode. Thereby effectively improving the blurring effect of the dynamic image. It should be noted that, the number of Pixel rows of the display panel may be any number, for example, 1500 rows of pixels, 2000 rows of pixels, 2500 rows of pixels, etc., and there may be 5, 6, 7, etc. divided regions.
In a preferred embodiment, the black insertion data is held for the same time as the light emission data is held, so that display driving is facilitated.
Further, the display panel includes a GIP transfer line, where the GIP transfer line is connected to a subset of the first set of GIP circuits, and then connected to a subset of the second set of GIP circuits connected to the subset, and connected to a next subset of the first set of GIP circuits according to the connection mode until all the subsets are connected, and the GIP transfer line is used to control whether the GIP circuit data is sent to the pixels of the display panel. The control of the sequential opening of the GIP circuit can be completed through the GIP transfer line.
Further, the method comprises the following steps: in the frame display time, all the subgroups of the first group GIP circuits complete one-time luminous data transmission and all the subgroups of the second group GIP circuits complete one-time black insertion data transmission, so that the display of a frame of frame can be completed.
The invention provides a display device with high image quality, which comprises a display panel and a driving unit which are connected with each other, wherein the driving unit is used for executing the steps described in any embodiment of the invention. The display device can reduce the sending time of the luminous data, can enable the moving picture to be reduced in a fuzzy way, and improves the image quality.
It should be noted that, although the foregoing embodiments have been described herein, the scope of the present invention is not limited thereby. Therefore, based on the innovative concepts of the present invention, alterations and modifications to the embodiments described herein, or equivalent structures or equivalent flow transformations made by the present description and drawings, apply the above technical solution, directly or indirectly, to other relevant technical fields, all of which are included in the scope of the invention.
Claims (5)
1. A driving method for improving image display quality is applied to a display panel, and is characterized in that: the display panel comprises a first group of GIP circuits and a second group of GIP circuits, each GIP circuit in the first group of GIP circuits and each GIP circuit in the second group of GIP circuits are connected one by one according to the sequence, the first group of GIP circuits and the second group of GIP circuits are connected with the pixels of the display panel after being connected, the first group of GIP circuits and the second group of GIP circuits are divided into a plurality of groups with the same quantity, the display panel comprises GIP transmission lines, the GIP transmission lines are connected with one group of the first group of GIP circuits and then connected with the group of the second group of GIP circuits connected with the group, the next group of the first group of GIP circuits is connected according to the connection mode until all groups are connected, the GIP transmission lines are used for controlling whether the GIP circuit data are sent to the pixels of the display panel or not, and the driving method comprises the following steps:
transmitting the light-emitting data in pulses through a subset of the first set of GIP circuits;
after the light emitting data of the subgroup are sent, black inserting data are sent through the subgroup of the second group of GIP circuits connected with the subgroup;
after the black insertion data is sent, sending luminous data through the next subgroup of the first group of GIP circuits;
dividing the GIP-A and the GIP-B into 4 groups, firstly starting the first group of the GIP-A to send the luminous data, starting the first group of the GIP-B to send the black inserting data after the luminous data is sent, starting the second group of the GIP-A to send the luminous data after the first group of the GIP-B is sent, starting the second group of the GIP-B to send the black inserting data after the second group of the luminous data is sent, starting the third group of the GIP-A to send the luminous data after the second group of the black inserting data is sent, starting the third group of the GIP-B to send the black inserting data after the third group of the GIP-B is sent, starting the fourth group of the GIP-A to send the luminous data after the fourth group of the GIP-B is sent, starting the fourth group of the GIP-B to send the black inserting data, and dividing one frame of a display into 8 stages of each GIP-A or each region to realize the starting of the GIP-B.
2. The driving method for improving image display quality according to claim 1, wherein: the integral of the pulse type brightness and time is equal to the integral of the continuous type brightness and time, so that the display brightness of the display panel is kept unchanged.
3. The driving method for improving image display quality according to claim 1, wherein the black insertion data is held for the same time as the light emitting data.
4. The driving method for improving image display quality according to claim 1, comprising the steps of:
during the picture display time of one frame,
all subgroups of the first set of GIP circuits complete one-time transmission of light-emitting data and all subgroups of the second set of GIP circuits complete one-time transmission of black-inserting data.
5. The utility model provides an improve display device of image display quality, includes interconnect's display panel and drive unit, its characterized in that: the driving unit is configured to perform the driving method according to any one of claims 1 to 4.
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| CN202010124092.XA CN111312142B (en) | 2020-02-27 | 2020-02-27 | Driving method and device for improving image display quality |
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| CN202010124092.XA CN111312142B (en) | 2020-02-27 | 2020-02-27 | Driving method and device for improving image display quality |
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| CN111312142B true CN111312142B (en) | 2023-07-25 |
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| CN1828698A (en) * | 2005-03-03 | 2006-09-06 | 奇美电子股份有限公司 | Flat display and driving method thereof |
| CN1892787A (en) * | 2005-06-30 | 2007-01-10 | Lg.菲利浦Lcd株式会社 | Liquid crystal display device and method for driving same |
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