CN113724662A - Display module, display device and compensation method - Google Patents
Display module, display device and compensation method Download PDFInfo
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- CN113724662A CN113724662A CN202110775983.6A CN202110775983A CN113724662A CN 113724662 A CN113724662 A CN 113724662A CN 202110775983 A CN202110775983 A CN 202110775983A CN 113724662 A CN113724662 A CN 113724662A
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- 238000000034 method Methods 0.000 title claims abstract description 12
- 230000002159 abnormal effect Effects 0.000 claims description 11
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
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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
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Abstract
The invention relates to the technical field of display screens, in particular to a display module, a display device and a compensation method, wherein the display module comprises a display panel and a display panel driving chip; the display panel driving chip is internally provided with a nonvolatile storage circuit, a first input end of the display panel driving chip is used for receiving externally input compensation data and storing the compensation data in the nonvolatile storage circuit, a second input end of the display panel driving chip is used for receiving externally input standard display data, an output end of the display panel driving chip is connected with an input end of the display panel, and correction data obtained by converting the standard display data by the display panel driving chip according to the compensation data is transmitted to the display panel. The invention has the beneficial effects that: the manufacturing cost and the use cost of the display device are saved.
Description
Technical Field
The invention relates to the technical field of display screens, in particular to a display module, a display device and a compensation method.
Background
With the worldwide popularization of liquid crystal displays, in the display world, mura refers to the phenomenon of uneven display brightness of a screen due to manufacturing process problems. demura means that the screen with originally non-uniform brightness is displayed normally by correcting data. At present, in order to eliminate the mura phenomenon on the Display panel, when the Display module is manufactured, as shown in fig. 1 and fig. 2, mura data of each Display panel is acquired through demura equipment, then compensation data obtained through calculation according to the acquired mura data is recorded into a single plug-in flash chip by the demura equipment through controlling a DDIC (Display Driver IC, Display Driver chip), when the Display module is normally used, the DDIC firstly reads the compensation data from the plug-in flash chip into a Memory (random access Memory, RAM for short) inside the DDIC after a power supply is turned on, and then normal Display data sent by a main control chip are converted according to the compensation data and sent to the Display panel.
Because ram loses power and loses data, so the existing scheme must hang flash memory chip to assist the storage compensation data, resulting in high display module cost. If the flash memory chip is directly integrated into the DDIC, the cost of the DDIC is also greatly increased.
Disclosure of Invention
In view of the above problems in the prior art, a display module, a display device and a compensation method are provided to reduce the manufacturing cost of a display driver chip.
The specific technical scheme is as follows:
the invention comprises a display module, which comprises a display panel and a display panel driving chip;
the display panel driving chip is internally provided with a nonvolatile storage circuit, a first input end of the display panel driving chip is used for receiving compensation data input from the outside and storing the compensation data in the nonvolatile storage circuit, a second input end of the display panel driving chip is used for receiving standard display data input from the outside, an output end of the display panel driving chip is connected with an input end of the display panel, and correction data obtained by converting the standard display data by the display panel driving chip according to the compensation data is transmitted to the display panel.
Preferably, the compensation data is generated by an external calibration compensation device, and the first input terminal of the display panel driving chip is connected to the output terminal of the calibration compensation device.
Preferably, the calibration compensation equipment is in communication connection with a panel data acquisition device, acquires abnormal data of the display panel through the panel data acquisition device, and calculates the compensation data according to the abnormal data.
Preferably, the panel data acquisition device is a shooting device, and the abnormal data of the display panel at different viewing angles are acquired through the shooting device.
Preferably, the display device further comprises a standard data interface disposed on the display panel driving chip.
Preferably, the standard data interface comprises a mobile industry processor interface.
The invention further comprises a display device, which comprises the display module in any one of the above technical schemes, and a main control chip, wherein the output end of the main control chip is connected with the second input end of the display panel driving chip, and is used for generating and outputting the standard display data.
The present invention also includes a compensation method of a display device, comprising:
the display panel driving chip receives standard display data output by the main control chip and compensation data output by the calibration compensation equipment;
storing the compensation data in a nonvolatile memory circuit built in the display panel driving chip;
and converting the standard display data according to the compensation data to obtain correction data, and transmitting the correction data to the display panel for display.
Preferably, the compensation data output by the calibration compensation device is calculated according to abnormal data of the display panel collected by a shooting device under different viewing angles.
The technical scheme of the invention has the following advantages or beneficial effects: the display module, the display device and the compensation method are provided, the original externally-hung FLASH chip is omitted, and the manufacturing cost and the use cost of the display device are saved.
Drawings
Embodiments of the present invention will be described more fully with reference to the accompanying drawings. The drawings are, however, to be regarded as illustrative and explanatory only and are not restrictive of the scope of the invention.
FIG. 1 is a schematic structural diagram of a display module and a calibration compensation device in the prior art;
fig. 2 is a schematic structural diagram between a display module and a main control chip in the prior art;
FIG. 3 is a schematic structural diagram of a display module and a calibration compensation device according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram between a display module and a main control chip in the embodiment of the present invention;
FIG. 5 is a flowchart illustrating a compensation method of a display device according to an embodiment of the present invention.
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.
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
The invention is further described with reference to the following drawings and specific examples, which are not intended to be limiting.
The invention provides a display module, as shown in fig. 3 and 4, comprising a display panel 1 and a display panel driving chip 2; the display panel driving chip 2 is internally provided with a nonvolatile memory circuit 201, a first input end of the display panel driving chip 2 is used for receiving compensation data input from the outside and storing the compensation data in the nonvolatile memory circuit 201, a second input end of the display panel driving chip 2 is used for receiving standard display data input from the outside, an output end of the display panel driving chip 2 is connected with an input end of the display panel 1, and correction data obtained by converting the standard display data by the display panel driving chip 2 according to the compensation data is transmitted to the display panel 1.
Specifically, the display panel driving chip 2 has a built-in RRAM (nonvolatile Memory circuit), in this embodiment, the RRAM is used to replace a RAM in a conventional display panel driving chip, the RRAM is a Resistive Random Access Memory, a Memory (a Memory resistor, the resistance of which changes according to a flowing current) is used as a Memory cell, and a typical RRAM is composed of two metal electrodes sandwiching a thin dielectric layer, and the dielectric layer is used as an ion transmission and storage medium. The difference of the selected materials brings great difference to the actual action mechanism, but the essence is that the ion motion and the local structure change of the storage medium are caused by external stimuli (such as voltage), so as to cause resistance change, and the resistance difference is utilized to store data. Briefly, the RRAM is a new computer memory, which is based on a new semiconductor material, relies on temperature and voltage to store data, has higher stability compared with the RAM, and is more energy-saving, and the RRAM is built in as shown in fig. 3 and 4, so that an external Flash chip is not needed, and the manufacturing cost of the display device can be saved.
As a preferred embodiment, as shown in fig. 3 and 4, the compensation data is generated by an external calibration compensation device 3, the calibration compensation device 3 in this embodiment comprises a demura device, and the first input terminal of the display panel driving chip 2 is connected to the output terminal of the calibration compensation device 3. The calibration compensation equipment 3 is in communication connection with the panel data acquisition device, acquires abnormal data of the display panel 1 through the panel data acquisition device, and calculates to obtain compensation data according to the abnormal data. The panel data acquisition device is the shooting device 5, and abnormal data, namely mura data, of different visual angles of the display panel are acquired through the shooting device 5.
As a preferred embodiment, the display module further includes a standard data interface (MIPI), and the standard data interface includes a Mobile Industry processor interface.
The invention further provides a display device, which comprises the display module in any one of the above embodiments, and further comprises a main control chip 4, wherein an output end of the main control chip 4 is connected with a second input end of the display panel driving chip 2 and is used for generating and outputting standard display data, and a nonvolatile storage circuit 201, namely an RRAM, is arranged in the display panel driving chip 2, and the RRAM stores data depending on temperature and voltage, so that the display device has higher stability compared with a RAM. In the embodiment, the RRAM is adopted to replace the traditional RAM, and a plug-in Flash chip can be removed, so that the manufacturing cost of the display device is saved.
The present invention also provides a compensation method of a display device, as shown in fig. 5, including:
step S1, the display panel driving chip receives the standard display data output by the main control chip and the compensation data output by the calibration compensation device;
step S2, storing the compensation data in the non-volatile memory circuit built in the display panel driver chip;
and step S3, converting the standard display data according to the compensation data to obtain the correction data, and transmitting the correction data to the display panel for display.
Specifically, the calibration compensation device in the present invention takes a demura device as an example, and the compensation data output by the demura device is calculated according to the mura data of the display panel collected by the shooting device at different viewing angles. The display panel driving chip in the embodiment adopts a built-in nonvolatile memory circuit (RRAM) to store compensation data output by demura equipment, when standard display data of the main control chip need to be compensated, the compensation data can be called from the RRAM at any time, and compared with the traditional display panel driving chip which needs to call data from a plug-in Flash chip, on one hand, the stability of data storage is higher, on the other hand, the Flash chip is omitted, and the cost of the display device can be saved.
The embodiment of the invention has the advantages that: the display module, the display device and the compensation method are provided, the original externally-hung FLASH chip is omitted, and the manufacturing cost and the use cost of the display device are saved.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention.
Claims (9)
1. A display module is characterized by comprising a display panel and a display panel driving chip;
the display panel driving chip is internally provided with a nonvolatile storage circuit, a first input end of the display panel driving chip is used for receiving compensation data input from the outside and storing the compensation data in the nonvolatile storage circuit, a second input end of the display panel driving chip is used for receiving standard display data input from the outside, an output end of the display panel driving chip is connected with an input end of the display panel, and correction data obtained by converting the standard display data by the display panel driving chip according to the compensation data is transmitted to the display panel.
2. The display module of claim 1, wherein the compensation data is generated by an external calibration compensation device, and the first input terminal of the display panel driving chip is connected to the output terminal of the calibration compensation device.
3. The display module assembly of claim 2, wherein the calibration compensation device is communicatively connected to a panel data acquisition device, and the panel data acquisition device acquires abnormal data of the display panel and calculates the compensation data according to the abnormal data.
4. The display module according to claim 3, wherein the panel data acquiring device is a camera, and the abnormal data of the display panel at different viewing angles are acquired by the camera.
5. The display module of claim 1, further comprising a standard data interface disposed on the display panel driver chip.
6. The display module of claim 5, wherein the standard data interface comprises a mobile industry processor interface.
7. A display device, characterized by comprising the display module of any one of claims 1-6, and further comprising a main control chip, wherein an output terminal of the main control chip is connected to the second input terminal of the display panel driving chip, and is used for generating and outputting the standard display data.
8. A compensation method for a display device, comprising:
the display panel driving chip receives standard display data output by the main control chip and compensation data output by the calibration compensation equipment;
storing the compensation data in a nonvolatile memory circuit built in the display panel driving chip;
and converting the standard display data according to the compensation data to obtain correction data, and transmitting the correction data to the display panel for display.
9. The compensation method of claim 8, wherein the compensation data output by the calibration compensation equipment is calculated according to abnormal data of the display panel collected by a camera under different viewing angles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110775983.6A CN113724662A (en) | 2021-07-08 | 2021-07-08 | Display module, display device and compensation method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110775983.6A CN113724662A (en) | 2021-07-08 | 2021-07-08 | Display module, display device and compensation method |
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| CN113724662A true CN113724662A (en) | 2021-11-30 |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103715354A (en) * | 2012-10-08 | 2014-04-09 | 爱思开海力士有限公司 | Resistive memory device and memory apparatus and data processing system having the same |
| CN105097034A (en) * | 2014-05-13 | 2015-11-25 | 三星电子株式会社 | Nonvolatile memory system and operating method of memory controller |
| CN105869672A (en) * | 2016-03-28 | 2016-08-17 | 华中科技大学 | RRAM-based nonvolatile FPGA programmed point circuit and operating method thereof |
| CN106328059A (en) * | 2016-09-07 | 2017-01-11 | 京东方科技集团股份有限公司 | Method and device for updating data in memory for electrical compensation |
| CN108877666A (en) * | 2018-07-25 | 2018-11-23 | 昆山国显光电有限公司 | Display panel and offset data transmission method |
| CN110515560A (en) * | 2019-08-27 | 2019-11-29 | 江苏华存电子科技有限公司 | A kind of effective storage mode for recorder |
| CN111899692A (en) * | 2020-08-24 | 2020-11-06 | 武汉天马微电子有限公司 | OLED display device, compensation data power-on transmission method and image display method |
| CN112102781A (en) * | 2020-10-30 | 2020-12-18 | 武汉精立电子技术有限公司 | Demura and SPR integration method and system of display device |
-
2021
- 2021-07-08 CN CN202110775983.6A patent/CN113724662A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103715354A (en) * | 2012-10-08 | 2014-04-09 | 爱思开海力士有限公司 | Resistive memory device and memory apparatus and data processing system having the same |
| CN105097034A (en) * | 2014-05-13 | 2015-11-25 | 三星电子株式会社 | Nonvolatile memory system and operating method of memory controller |
| CN105869672A (en) * | 2016-03-28 | 2016-08-17 | 华中科技大学 | RRAM-based nonvolatile FPGA programmed point circuit and operating method thereof |
| CN106328059A (en) * | 2016-09-07 | 2017-01-11 | 京东方科技集团股份有限公司 | Method and device for updating data in memory for electrical compensation |
| CN108877666A (en) * | 2018-07-25 | 2018-11-23 | 昆山国显光电有限公司 | Display panel and offset data transmission method |
| CN110515560A (en) * | 2019-08-27 | 2019-11-29 | 江苏华存电子科技有限公司 | A kind of effective storage mode for recorder |
| CN111899692A (en) * | 2020-08-24 | 2020-11-06 | 武汉天马微电子有限公司 | OLED display device, compensation data power-on transmission method and image display method |
| CN112102781A (en) * | 2020-10-30 | 2020-12-18 | 武汉精立电子技术有限公司 | Demura and SPR integration method and system of display device |
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Application publication date: 20211130 |
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