CN114429757A - Display panel, display module and driving method of display module - Google Patents
Display panel, display module and driving method of display module Download PDFInfo
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- CN114429757A CN114429757A CN202111460002.5A CN202111460002A CN114429757A CN 114429757 A CN114429757 A CN 114429757A CN 202111460002 A CN202111460002 A CN 202111460002A CN 114429757 A CN114429757 A CN 114429757A
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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
- G09G3/34—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 by control of light from an independent source
- G09G3/36—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 by control of light from an independent source using liquid crystals
- G09G3/3611—Control of matrices with row and column drivers
- G09G3/3648—Control of matrices with row and column drivers using an active matrix
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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
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0271—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping
- G09G2320/0276—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping for the purpose of adaptation to the characteristics of a display device, i.e. gamma correction
Abstract
The application provides a display panel, a display module and a driving method of the display module. The display panel includes: the array substrate, a plurality of driving units and a storage chip; the array substrate is used for displaying images; the plurality of driving units are electrically connected with the array substrate and used for driving the array substrate to display images; the storage chip is connected with a plurality of driving units; the gamma data of the array substrate and the configuration data of the display panel are stored in the memory chip. The display panel can be separated from the central control panel for shipment, and the gamma of the display panel can be automatically adjusted conveniently without increasing the size of the display panel; meanwhile, the storage space of the storage chip can be reasonably utilized, and the cost is saved.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display panel, a display module and a driving method of the display module.
Background
With the continuous development of liquid crystal display technology, liquid crystal display modules have been widely applied in various fields such as televisions, vehicles, mobile communication, medical treatment and the like, and users have higher and higher requirements for the image quality of liquid crystal display.
However, due to the difference between the manufacturing processes and the materials of the Display panel manufacturers, the gamma (voltage-luminance) curve of the Thin Film Transistor Liquid Crystal Display (TFT LCD) panel is deviated; if each display panel reaches the specification of the customer (the deviation range of the gamma voltage required by the brand customers is 2.2 +/-0.2), the gamma (auto P-gamma) of each display panel needs to be automatically adjusted so that the gamma curve meets the specification.
Currently, each panel is corrected by auto P-gamma before shipment so that the gamma curve meets the specification. However, as the size of the lcd panel gradually increases, the lcd panel and the central Control Board (CB) storing the gamma data of the lcd panel are generally shipped in a separated structure, which is not favorable for auto P-gamma.
Disclosure of Invention
The application provides a display panel, a display module and a driving method of the display module, the display panel can solve the problems that the existing display panel and a central control panel which stores gamma data of the display panel adopt a separation framework for shipment and are not beneficial to auto P-gamma.
In order to solve the technical problem, the application adopts a technical scheme that: a display panel is provided. The display panel includes: the array substrate, a plurality of driving units and a storage chip; the array substrate is used for displaying images; the plurality of driving units are electrically connected with the array substrate and used for driving the array substrate to display images; the storage chip is connected with a plurality of driving units; the gamma data of the array substrate and the configuration data of the display panel are stored in the memory chip.
The control circuit board is electrically connected with the plurality of driving units and is used for being electrically connected with the central control board; the memory chip is arranged on the control circuit board and is connected with the plurality of driving units through the control circuit board.
The number of the control circuit boards is multiple, and the memory chip is arranged on one of the control circuit boards.
The plurality of driving units comprise a plurality of source driving units and a plurality of grid driving units; each driving unit comprises a flexible circuit board and a driving chip, and the driving chip is electrically connected with the array substrate and the control circuit board through the flexible circuit board.
In order to solve the above technical problem, another technical solution adopted by the present application is: a display module is provided. This display module assembly includes: a display panel and a central control panel; the display panel is the display panel according to the above.
Wherein, the central control board comprises a time sequence control circuit (TCON IC), a gamma correction circuit (gamma IC) and a power management circuit (PM IC).
The central control board does not store the configuration data of the display panel and the gamma data of the array substrate.
Wherein, the central control panel is not provided with a memory chip.
In order to solve the above technical problem, the present application adopts another technical solution: a driving method of the display module is provided. The driving method is applied to the related display module; the driving method includes: the central control board acquires gamma data of the array substrate and configuration data of the display panel from the control circuit board; and the central control board controls the display panel to display according to the acquired gamma data of the array substrate and the configuration data of the display panel.
The step of acquiring the gamma data of the array substrate and the configuration data of the display panel from the control circuit board by the central control board specifically comprises the following steps: the central control board firstly obtains the configuration data of the display panel from the control circuit board and then obtains the gamma data of the array substrate.
According to the display panel, the display module and the driving method of the display module, the display panel is provided with the array substrate to display images; meanwhile, the plurality of driving units are arranged and electrically connected with the array substrate so as to drive the array substrate to display images; in addition, the memory chip is electrically connected with the plurality of driving units and stores the gamma data of the array substrate and the configuration data of the display panel in the memory chip, so that the size of the display panel is not increased, and the display panel is convenient to automatically adjust the gamma when the display panel and the central control panel are delivered separately; meanwhile, the storage space of the storage chip can be reasonably utilized, and the cost is saved.
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, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:
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 module applying the display panel shown in fig. 1 according to an embodiment of the present disclosure;
FIG. 3 is a schematic structural diagram of a display module applying the display panel shown in FIG. 1 according to another embodiment of the present disclosure
FIG. 4 is a diagram of an architecture of an automatic gamma adjustment system according to an embodiment of the present application;
fig. 5 is a flowchart of a driving method of a display module according to an embodiment of the disclosure.
Description of the reference numerals
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, and it is obvious that the described embodiments are only a part of the embodiments of the present application, 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 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 specified 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 present application will be described in detail with reference to the accompanying drawings and examples.
Please refer to fig. 1 and fig. 2, wherein 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 module applying the display panel shown in fig. 1 according to an embodiment of the present disclosure. In the present embodiment, a display panel 10 is provided, and the display panel 10 can be applied to a computer, a television, and other display devices such as a display module 100 a. The display type of the display panel 10 may be, but is not limited to, a liquid crystal display, an organic light emitting display, or the like.
As shown in fig. 1, the display panel 10 includes an array substrate 11, a plurality of driving units 12, a memory chip 13, and a control circuit board 14.
The array substrate 11 is used for displaying images; the plurality of driving units 12 are electrically connected to the array substrate 11, and are configured to apply a voltage to the array substrate 11 to drive the array substrate 11 to display an image; the memory chip 13 is electrically connected to the plurality of driving units 12; and the memory chip 13 stores therein gamma data for debugging the array substrate 11. It can be understood that, since the gamma data for debugging the array substrate 11 is stored in the display panel 10 itself, even if the display panel 10 is shipped separately from the central control board 20, auto P-gamma of the display panel 10 is not affected, and thus, by storing the gamma data for debugging the array substrate 11 in the memory chip 13, not only the size of the display panel 10 is not increased, but also auto P-gamma of the display panel 10 is facilitated when the display panel 10 is shipped separately from the central control board 20 and is subsequently used in connection with the central control board 20.
In an embodiment, the array substrate 11 includes a substrate, a cover plate, a liquid crystal layer, a polarizing layer, and the like. The substrate comprises a TFT array and a wiring; the base substrate may be a glass substrate or the like. The traces are electrically connected to the control circuit board 14 through the driving unit 12. In one embodiment, the top surface and the bottom surface of the substrate base plate are both formed with traces.
The driving unit 12 may be a Chip On Film (COF). Each of the driving units 12 includes a flexible wiring board and a driving chip. The driving chip is electrically connected to the flexible circuit board, and is electrically connected to the traces of the array substrate 11 and the control circuit board 14 through the flexible circuit board.
In a specific embodiment, the plurality of driving units 12 includes a plurality of source driving units 121 and a plurality of gate driving units 122. The central control board 20 outputs data signals to the plurality of source driving units 121, and the plurality of source driving units 121 determine voltage values of the data signals applied to the array substrate 11 based on the received data signals. In an embodiment, the plurality of source driving units 121 are disposed on the first side of the array substrate 11 and connected to the array substrate 11 through the substrate traces. Specifically, the plurality of source driving units 121 are disposed at intervals along a lateral extension direction of the array substrate 11.
The plurality of gate driving units 122 are used to control the switches of the array substrate 11. In one embodiment, the central control board 20 outputs a control signal to the gate driving unit 122 to control when the gate driving chips in the gate driving unit 122 output, i.e., control the output timing of the gate driving chips, so as to scan each row of pixels.
Specifically, the plurality of gate driving units 122 are disposed on the second side and/or the third side adjacent to the first side of the array substrate 11, and are connected to the array substrate 11 through the substrate routing. Wherein the second side and the third side are oppositely arranged. In a specific embodiment, the plurality of gate driving units 122 are disposed at intervals along a vertical extending direction of the array substrate 11.
The control circuit board 14 may be a printed wiring board. The control circuit board 14 is electrically connected to the plurality of driving units 12 and is configured to be electrically connected to the central control board 20 for transmitting data signals and control signals transmitted from the central control board 20 to the driving units 12. In a specific embodiment, the memory chip 13 is specifically disposed on the control circuit board 14, and is electrically connected to the plurality of driving units 12 through the control circuit board 14. In this embodiment, the display module 100a corresponding to the display panel 10 can be specifically referred to in fig. 2, and as shown in fig. 2, the configuration data of the display panel 10 is still stored in the data storage chip 21 of the central control board 20.
In an embodiment, as shown in fig. 1, the number of the control circuit boards 14 is multiple, the memory chip 13 is disposed on one control circuit board 14 of the multiple control circuit boards 14, and the number of the memory chip 13 is only one, so as to save cost.
Since the gamma information for debugging the array substrate 11 occupies a small space in the memory chip 13, adding a special memory chip 13 for storing only the gamma information will cause a large amount of space waste in the memory chip 13, thereby causing resource waste and cost increase. For this reason, in another embodiment, a new display panel 10 is provided, and unlike the display panel 10 provided in the above embodiment, the configuration data of the display panel 10 is also stored on the memory chip 13. Referring to fig. 3, a specific structure of a display module 100b corresponding to the embodiment is shown, and fig. 3 is a schematic structural diagram of a display module applying the display panel shown in fig. 1 according to another embodiment of the present disclosure.
Specifically, in this embodiment, the display panel 10 includes an array substrate 11, a plurality of driving units 12, a memory chip 13, and a control circuit board 14; the configuration data of the array substrate 11 and the gamma data for debugging the array substrate 11 are stored in the memory chip 13. Therefore, when the display panel 10 and the central control panel 20 are shipped separately, auto P-gamma is conveniently carried out on the display panel 10, and the storage space of the storage chip 13 can be better utilized to reasonably distribute resources; meanwhile, a data storage chip 21 (see fig. 2) for storing configuration data of the display panel 10 in the central control board 20 is omitted, so that cost is effectively saved; and the area of the central control board 20 can be further reduced, thereby further reducing the cost.
The specific structures and functions of the array substrate 11, the plurality of driving units 12, and the control circuit board 14 are the same as or similar to those of the array substrate 11, the plurality of driving units 12, and the control circuit board 14 in the display panel 10 shown in the first embodiment, and the same or similar technical effects can be achieved.
The display panel 10 provided in this embodiment displays an image by disposing the array substrate 11; meanwhile, by providing a plurality of driving units 12, the plurality of driving units 12 are electrically connected with the array substrate 11 to drive the array substrate 11 to display an image; in addition, by providing the memory chip 13, electrically connecting the memory chip 13 with the plurality of driving units 12, and storing the gamma data for debugging the array substrate 11 in the memory chip 13 of the control circuit board 14, it is not only possible to increase the size of the display panel 10, but also convenient to auto-P-gamma the display panel 10 when the display panel 10 is shipped separately from the central control board 20; in addition, by further storing the configuration data of the display panel 10 in the memory chip 13, the memory space of the memory chip 13 can be better utilized to reasonably allocate resources; meanwhile, the data storage chip 21 for storing the configuration data of the display panel 10 in the central control board 20 is saved, and the cost is effectively saved. Further, since the data storage chip 21 on the central control board 20 is omitted, the printed wiring board of the central control board 20 can be smaller in size, the wiring can be simpler, and the cost can be further reduced.
In an embodiment, referring to fig. 2 and 3, a display module 100a/100b is further provided, where the display module 100a/100b includes a display panel 10 and a central control board 20. The display panel 10 is electrically connected to the central control board 20, and the display panel 10 may be the display panel 10 according to any of the above embodiments.
The central control board 20 is used for receiving an input signal from a system terminal and outputting a data signal to the source driving unit 121, so as to control the voltage value applied to the array substrate 11 in the display panel 10 through the source driving unit 121; meanwhile, the control signal is output to the gate driving unit 122 to control when the gate driving chips in the gate driving unit 122 output, i.e., to control the output timing of the gate driving chips.
In a specific embodiment, the central control board 20 includes a timing control circuit 22(TCON IC), a gamma correction circuit 23 (gamma IC), and a power management circuit 24(PM IC). The timing control circuit 22 is electrically connected to the gate driving chip in the gate driving unit 122, and is configured to control an output timing of the gate driving chip; the gamma correction circuit 23 is electrically connected to the memory chip 13, and is configured to debug and correct the display panel 10 according to the gamma data stored in the memory chip 13; the power management circuit 24 is electrically connected to the source driving unit 121 and is used for controlling a voltage value applied to the array substrate 11.
Specifically, the central control Board 20 may include an assembled Printed Circuit Board (PCBA) and a TCON chip, a gamma correction chip, and a power management chip disposed on the assembled Printed Circuit Board.
When the display panel 10 is the display panel 10 shown in fig. 1, the central control board 20 further includes a data storage chip 21, the data storage chip 21 stores configuration data of the display panel 10, and the display module 100a corresponding to the embodiment may specifically refer to fig. 2. When the display panel 10 is the display panel 10 shown in fig. 3, the central control board 20 does not store the configuration data of the display panel 10 and the gamma data of the debug array substrate 11, the display module 100b corresponding to the embodiment can be specifically seen in fig. 3, the central control board 20 is not provided with a memory chip, and compared with the display module 100a shown in fig. 2, the display module 100b saves one data memory chip 21 and reduces the cost.
Referring to fig. 4, fig. 4 is a schematic diagram of an automatic gamma adjustment system according to an embodiment of the present disclosure. The display panel 10 according to the above embodiment can specifically adopt the automatic gamma adjustment system shown in fig. 4 to perform debugging and correction. Specifically, the automatically adjusting gamma includes: the display module 100a/100b, the optical measurement instrument 200, the automatic gamma (P-gamma) adjustment device 300, and the computer 400 according to the above embodiments.
The optical measurement instrument 200 is configured to collect brightness and flicker data of the display panel 10, calculate the brightness and flicker data by a Micro Control Unit (MCU), and transmit the brightness and flicker data to the P-gamma device 300. The optical measuring instrument 200 may be a photoelectric sensor.
The P-gamma device 300 is used for transmitting the flicker data collected by the optical measuring instrument 200 to the computer 400; on the other hand, the display panel is used for transmitting the picture information to the display panel 10 for display; and communicates with the gamma data module on the display module 100 through the interface of converting to I2C. The current brightness is obtained through the photoelectric sensor, the target brightness is calculated through theory, the gamma binding point brightness is corrected to the target brightness again, each display panel 10 is corrected, the gamma curve meets the specification, and the obtained gamma data are burnt in the storage chip 13.
In the display module 100 provided in this embodiment, the display module 100 is provided with the display panel 10, and the display panel 10 is provided with the array substrate 11 to display an image; meanwhile, by providing a plurality of driving units 12, the plurality of driving units 12 are electrically connected with the array substrate 11 to drive the array substrate 11 to display an image; in addition, by providing the control circuit board 14, the control circuit board 14 is electrically connected to the plurality of driving units 12 and is used for being electrically connected to the central control board 20, and the gamma data of the array substrate 11 is stored in the memory chip 13, so that not only the size of the display panel 10 is not increased, but also auto P-gamma of the display panel 10 is facilitated when the display panel 10 is shipped separately from the central control board 20; in addition, by further storing the configuration data of the display panel 10 in the memory chip 13, the memory space of the memory chip 13 can be better utilized to reasonably allocate resources; meanwhile, chips for storing configuration data of the display panel 10 in the central control board 20 are saved, and cost is effectively saved.
In an embodiment, referring to fig. 5, fig. 5 is a flowchart of a driving method of a display module according to an embodiment of the present application; a driving method of a display module is provided, which can be applied to the display module according to the above embodiments, and the driving method specifically includes:
step S1: the central control board obtains the gamma data of the array substrate and the configuration data of the display panel from the control circuit board.
In one embodiment, the configuration data of the display panel 10 and the gamma data of the array substrate 11 are stored in the memory chip 13 of the control circuit board 14, so that the memory space of the memory chip 13 can be reasonably utilized to save resources and save cost. In this embodiment, the central control board 20 may specifically acquire the configuration data of the display panel 10 from the control circuit board 14, and then acquire the gamma data of the array substrate 11.
Step S2: and the central control board controls the display panel to display according to the acquired gamma data of the array substrate and the configuration data of the display panel.
Specifically, the central control board 20 acquires gamma data for debugging the array substrate 11 and configuration data of the display panel 10 from the display panel 10, and then performs debugging correction on the display panel 10 by using the gamma correction circuit 23 in the central control board 20 based on the gamma data, and controls the display panel 10 to display based on the configuration data of the display panel 10.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, a division of a unit is only a logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The above embodiments are merely examples and are not intended to limit the scope of the present disclosure, and all modifications, equivalents, and flow charts using the contents of the specification and drawings of the present disclosure or those directly or indirectly applied to other related technical fields are intended to be included in the scope of the present disclosure.
Claims (10)
1. A display panel, comprising:
an array substrate for displaying an image;
the driving units are electrically connected with the array substrate and used for driving the array substrate to display images;
the memory chip is electrically connected with the plurality of driving units;
the gamma data of the array substrate and the configuration data of the display panel are both stored in the memory chip.
2. The display panel according to claim 1, further comprising a control circuit board electrically connected to the plurality of driving units for electrically connecting to a central control board; the memory chip is arranged on the control circuit board and is connected with the plurality of driving units through the control circuit board.
3. The display panel according to claim 2, wherein the control circuit board is provided in plurality, and the memory chip is disposed on one of the control circuit boards.
4. The display panel according to claim 1, wherein the plurality of driving units include a plurality of source driving units and a plurality of gate driving units; each driving unit comprises a flexible circuit board and a driving chip, and the driving chip is electrically connected with the array substrate and the control circuit board through the flexible circuit board.
5. A display module, comprising: display panel and central control panel, characterized in that the display panel is a display panel according to any of claims 1-4.
6. The display module as claimed in claim 5, wherein the central control board comprises a timing control circuit, a gamma correction circuit and a power management circuit.
7. The display module of claim 5, wherein the central control board does not store configuration data of the display panel and gamma data of the array substrate.
8. The display module of claim 5, wherein the central control board is not provided with a memory chip.
9. A driving method of a display module, applied to the display module according to any one of claims 5 to 8; it is characterized by comprising:
the central control board acquires gamma data of the array substrate and configuration data of the display panel from the control circuit board;
and the central control board controls the display panel to display according to the acquired gamma data of the array substrate and the configuration data of the display panel.
10. The method as claimed in claim 9, wherein the step of the central control board obtaining the gamma data of the array substrate and the configuration data of the display panel from the control circuit board comprises
The central control board firstly acquires configuration data of the display panel from the control circuit board, and then acquires gamma data of the array substrate.
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| CN202111460002.5A CN114429757A (en) | 2021-12-02 | 2021-12-02 | Display panel, display module and driving method of display module |
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| CN202111460002.5A CN114429757A (en) | 2021-12-02 | 2021-12-02 | Display panel, display module and driving method of display module |
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| CN109389959A (en) * | 2018-12-12 | 2019-02-26 | 惠科股份有限公司 | The driving framework and method of display panel |
| CN113160769A (en) * | 2021-04-25 | 2021-07-23 | Tcl华星光电技术有限公司 | Driving system and driving method of display panel |
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Application publication date: 20220503 |