CN111489705B - Method for image partition display - Google Patents
Method for image partition display Download PDFInfo
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- CN111489705B CN111489705B CN202010290226.5A CN202010290226A CN111489705B CN 111489705 B CN111489705 B CN 111489705B CN 202010290226 A CN202010290226 A CN 202010290226A CN 111489705 B CN111489705 B CN 111489705B
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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
- G09G3/3406—Control of illumination source
- G09G3/3413—Details of control of colour illumination sources
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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
- G09G3/3406—Control of illumination source
- G09G3/342—Control of illumination source using several illumination sources separately controlled corresponding to different display panel areas, e.g. along one dimension such as lines
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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
- G09G2320/06—Adjustment of display parameters
- G09G2320/0613—The adjustment depending on the type of the information to be displayed
- G09G2320/062—Adjustment of illumination source parameters
Abstract
The invention discloses a method for displaying images in a partitioning mode. Correspondingly dividing an image to be displayed into a plurality of sub-images according to the layout of a plurality of display partitions; transmitting the sub-image to a corresponding display partition; driving the start and/or the stop of a plurality of first LED chips in the display partition; the display partition comprises an LED lamp panel, the LED lamp panel comprises at least one light guide layer, a first LED chip array with a light emitting surface perpendicular to the light guide layer, and a reflecting mechanism arranged around the light guide layer to realize optical separation and display driving. The invention provides a method for image partition display of a backlight module, which can realize dynamic backlight control display.
Description
Technical Field
The invention relates to the field of display, in particular to a method for displaying images in a partitioned mode.
Background
The liquid crystal display is the preferred choice of the current display device because of the excellent image reproduction function, but the overall transmittance of the liquid crystal display is only about 5% due to the filtering effect of the liquid crystal layer, the polaroid and the color resistance. The red, green, blue and white RGBW display technology has the advantages of high brightness and low power consumption compared with the red, green and blue RGB pixel arrangement because the white pixel W adopts the OC flat layer with high transmittance to replace the color resistance layer with low transmittance by adding the white pixel on the basis of the traditional red, green and blue RGB color resistance arrangement.
At present, the brightness of a liquid crystal display module based on the arrangement of red, green and blue RGB pixels of a traditional side-entry backlight reaches 400-500nits, and the transmittance of a white W sub-pixel is improved by about 100-150% relative to that of the red, green and blue RGB pixels, so that the highest brightness of about 700-1200nits can be realized. The core of the high dynamic contrast (HDR: high dynamic range) technology is to provide a contrast space of up to 104 orders of magnitude that can match the contrast recognition range of the human eye, and thus restore the human eye's perception of the real world, and for digital image coding technology, 10bit coding is required to support the contrast space of 104 orders of magnitude. Thus, the various mainstream HDR alliances, including UHDA, dolby, etc., prescribe that the brightness control of HDR displays need to support at least around 800-1000 nits. The maximum brightness of the mobile terminal based on the conventional RGB pixel arrangement liquid crystal display technology is usually about 500nits, and the limited low transmittance characteristic of the conventional liquid crystal technology and the severe requirements of the mobile terminal on power consumption and endurance time cannot meet the hardware requirements of the HDR display technology. Furthermore, because the source of the current HDR video image sources is very limited, typically, the non-HDR video display relies mainly on specific gray scale coding rather than the actual brightness at the image acquisition end, and thus for low saturation high gray scale coding, such as (255 ), the non-HDR display typically displays the maximum brightness; for the HDR display with the highlighting feature, the above processing can cause the brightness of the whole frame of picture to be about 1000nits, thereby generating a dazzling effect, and greatly increasing the power consumption of the HDR display.
In addition, the direct type backlight module is directly arranged at the rear of the liquid crystal display panel, has the advantage of a narrow frame, is widely applied to the large-size display field, and needs a corresponding display method to realize high-efficiency HDR display.
Disclosure of Invention
The invention mainly solves the technical problem of providing a method for displaying images of a backlight module in a partitioned manner, which can realize dynamic backlight control display.
In order to solve the technical problem, the technical scheme adopted by the invention is to provide a method for displaying images in a partitioned manner, which comprises the following steps: correspondingly dividing the image to be displayed into a plurality of sub-images according to the layout of the display partitions;
transmitting the sub-image to the corresponding display partition;
driving the starting and/or closing of a plurality of first LED chips in the display partition;
the display partition comprises an LED lamp panel, the LED lamp panel comprises at least one light guide layer, a first LED chip array with a light emitting surface perpendicular to the light guide layer, and a reflection mechanism arranged around the light guide layer to realize optical separation and display driving. The information of the sub-images comprises low dynamic range LDR video data and/or high dynamic range HDR video data. The display driver is configured to generate a display signal by processing the video data to be displayed in a specific display mode that is any one of an LDR display mode and an HDR display mode, and processing the graphics data to generate an overlay for overlapping the video data. The first LED chip 1022 is a mini LED chip or a Micro-LED chip.
According to the method for displaying the image in the partitioned mode, the starting or closing of the first LED chip array is controlled, sub-image information is optically transmitted on the light guide layer in the brightness, color and image gray scale mode, so that the light equalizing effect can be achieved, the optical separation can be achieved, a display picture with a high HDR contrast value of terminal equipment can be obtained, the light emitting uniformity of a surface light source is improved, dynamic adjustment of backlight and image gray scale of each partitioned mode is achieved, the contrast space is improved, and power consumption is saved.
In a preferred embodiment, the display partition further includes a second LED chip array having a light emitting surface parallel to the light guiding layer, so as to increase brightness of the display image in an axial direction.
In a preferred embodiment, the plurality of first LED chips includes at least a red LED chip, a blue LED chip, and a green LED chip.
In a preferred embodiment, the first LED chip is embedded in the light guiding layer, so that the emitted light of the first LED chip passes through the light guiding layer and is emitted in a uniform area light source after being mixed.
In a preferred embodiment, the display area includes an optical film set, an LED lamp panel and an FPC driving board disposed from top to bottom, and a reflective layer is disposed on the FPC driving board.
In a preferred embodiment, the display area further includes a reflective light-gathering structure, and the reflective light-gathering structure is disposed between the LED lamp panel and the FPC driving board, and is configured to reflect the light emitted from the LED light source toward one side of the light-emitting surface of the display area.
In a preferred embodiment, the information of the sub-image comprises LDR palette information defining at least one LDR color palette and HDR palette information defining at least one HDR color palette, and the processing control data of the sub-image comprises palette selection instructions for selecting an HDR palette, the display driver being arranged to select an HDR color palette in the HDR display mode in dependence of the palette selection instructions.
In a preferred embodiment the processing control data of the sub-image comprises a transparency instruction for defining a transparency reduction relative to transparency in the LDR display mode, the display driver is arranged to adapt the transparency of the graphics data in the overlay in the HDR display mode in dependence on the transparency instruction, or the graphics processing control data comprises a luminance instruction for defining a luminance reduction relative to luminance in the LDR display mode, and the display driver is arranged to define the luminance of the graphics data in the overlay in the HDR display mode in dependence on the luminance instruction.
Drawings
The present invention and its advantages will be better understood by studying the detailed description of the specific embodiments illustrated in the appended drawings, given by way of non-limiting example, wherein:
fig. 1 is an exploded view of a surface light source backlight device to which the method of image division display of embodiment 1 of the present invention is applied.
Fig. 2 is a cross-sectional view of a method of image division display of embodiment 1 of the present invention using a surface light source backlight device to illustrate general optical principles thereof.
Detailed Description
Referring to the drawings wherein like reference numbers represent like elements throughout, the principles of the present invention are illustrated in the accompanying drawings as implemented in a suitable environment. The following description is based on illustrated embodiments of the invention and should not be taken as limiting other embodiments of the invention not described in detail herein.
The word "embodiment" is used in this specification to mean serving as an example, instance, or illustration. Furthermore, the articles "a" and "an" as used in this specification and the appended claims may generally be construed to mean "one or more" unless specified otherwise or clear from context to be directed to a singular form.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless explicitly stated and limited otherwise, the terms "disposed," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically connected, electrically connected or can be communicated with each other; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
Furthermore, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both first and second features being in direct contact, and may also include both first and second features not being in direct contact but being in contact with each other by way of additional features therebetween. Also, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or meaning that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or meaning that the first feature is less level than the second feature.
The following disclosure provides many different embodiments, or examples, for implementing different features of the invention. In order to simplify the present disclosure, components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not themselves indicate the relationship between the various embodiments and/or arrangements discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the application of other processes and/or the use of other materials.
Example 1
First, a method of image division display according to embodiment 1 of the present invention will be described with reference to fig. 1 to 2. The invention adopts a technical scheme that a method for displaying images in a partitioned way is provided, which comprises the following steps: correspondingly dividing the image to be displayed into a plurality of sub-images according to the layout of the display partitions;
transmitting the sub-image to the corresponding display partition;
driving the activation and/or deactivation of 7 x 7 first LED chips 1022 within the display section;
the display partition includes an LED lamp board 102, where the LED lamp board includes at least one light guiding layer 1021, a first LED chip 1022 array with a light emitting surface perpendicular to the light guiding layer 1021, and a reflection mechanism 1011 disposed around the light guiding layer 1021 to realize optical separation and display driving. The information of the sub-images comprises low dynamic range LDR video data and/or high dynamic range HDR video data. The display driver is configured to generate a display signal by processing the video data to be displayed in a specific display mode that is any one of an LDR display mode and an HDR display mode, and processing the graphics data to generate an overlay for overlapping the video data. The first LED chip 1022 is a mini LED chip.
According to the method for displaying the image in the partitioned mode, the starting or closing of the first LED chip 1022 array is controlled, sub-image information is optically transmitted on the light guide layer 1021 in the brightness, color and image gray scale mode to achieve the adjustable light equalizing effect and optical separation, a display picture with high HDR contrast value of the terminal equipment can be obtained, the light emitting uniformity of a surface light source is improved, dynamic adjustment of backlight and image gray scale of each partitioned mode is achieved, and therefore contrast space is improved and power consumption is saved.
The information of the sub-image comprises LDR palette information defining at least one LDR color palette and HDR palette information defining at least one HDR color palette, and the processing control data of the sub-image comprises palette selection instructions for selecting an HDR palette, the display driver being arranged to select an HDR color palette in an HDR display mode in dependence of the palette selection instructions.
The processing control data of the sub-image comprises a transparency instruction defining a transparency reduction relative to the transparency in the LDR display mode, the display driver is arranged to adapt the transparency of the graphics data in the overlay in the HDR display mode in dependence on the transparency instruction, or the graphics processing control data comprises a luminance instruction defining a luminance reduction relative to the luminance in the LDR display mode, and the display driver is arranged to define the luminance of the graphics data in the overlay in the HDR display mode in dependence on the luminance instruction.
The plurality of first LED chips 1022 includes a red LED chip, a blue LED chip, and a green LED chip.
The first LED chip 1022 is embedded in the light guiding layer 1021, so that the emitted light of the first LED chip 1022 passes through the light guiding layer 1021 and is emitted in a uniform area light source.
The display area comprises an optical film group 101, an LED lamp panel 102 and an FPC driving board which are arranged from top to bottom, and a reflecting layer is arranged on the FPC driving board.
The display partition further comprises a reflection condensing structure, wherein the reflection condensing structure is arranged between the LED lamp panel and the FPC driving board and used for reflecting the light emitted by the LED light source to one side of the light emitting surface of the display partition.
Example 2
Only the differences between embodiment 2 and embodiment 1 will be described below, and the description of the similarities will not be repeated here.
The display partition further includes a second LED chip array having a light emitting surface parallel to the light guiding layer 1021, so as to increase brightness of the display image in the axial direction. The second LED chip array is a direct type backlight.
Although the invention has been described above with reference to some embodiments, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the features of the various embodiments disclosed herein may be combined with each other in any manner so long as there is no structural conflict, and the combination is not described in the present specification in an exhaustive manner for the sake of brevity and resource saving. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (7)
1. A method for partitioned display of an image, comprising:
correspondingly dividing the image to be displayed into a plurality of sub-images according to the layout of the display partitions;
transmitting the sub-image to the corresponding display partition;
driving the starting and/or closing of a plurality of first LED chips in the display partition;
the display partition comprises an LED lamp panel, the LED lamp panel comprises at least one light guide layer, a first LED chip array with a light emitting surface perpendicular to the light guide layer, and a reflecting mechanism arranged around the light guide layer to realize optical separation and display driving;
the information of the sub-images comprises low dynamic range [ LDR ] video data and/or high dynamic range [ HDR ] video data;
the display driver for generating a display signal by processing the video data to be displayed in a specific display mode which is any one of an LDR display mode and an HDR display mode, and processing the graphics data to generate an overlay for overlapping the video data;
the first LED chip is embedded in the light guide layer, so that the emitted light of the first LED chip passes through the light guide layer and is emitted out in a uniform area light source after being mixed.
2. The method of claim 1, wherein the display section further comprises a second LED chip array having a light exit surface parallel to the light guiding layer.
3. The method of claim 1, wherein the plurality of first LED chips comprises at least one red LED chip, one blue LED chip, and one green LED chip.
4. A method of image partition display according to claim 1, comprising:
the display partition comprises an optical film group, an LED lamp panel and an FPC driving board which are arranged from top to bottom, and a reflecting layer is arranged on the FPC driving board.
5. The method of claim 4, wherein the display section further comprises a reflective condensing structure disposed between the LED lamp panel and the FPC driving board for reflecting the light emitted from the LED light source toward one side of the light emitting surface of the display section.
6. A method of image partition display as claimed in claim 1, the information of the sub-image comprising LDR palette information defining at least one LDR color palette and HDR palette information defining at least one HDR color palette, and the processing control data of the sub-image comprising palette selection instructions for selecting an HDR palette, the display driver being arranged to select an HDR color palette in an HDR display mode in dependence on the palette selection instructions.
7. A method of image partition displaying according to claim 6, the processing control data of the sub-image comprising a transparency instruction defining a reduced transparency relative to the transparency in the LDR display mode, the display driver being arranged to adapt the transparency of the graphics data in the overlay in the HDR display mode in dependence on the transparency instruction, or the processing control data of the sub-image comprising a luminance instruction defining a reduced luminance relative to the luminance in the LDR display mode, and the display driver being arranged to define the luminance of the graphics data in the overlay in the HDR display mode in dependence on the luminance instruction.
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| CN202010290226.5A CN111489705B (en) | 2020-04-14 | 2020-04-14 | Method for image partition display |
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| CN202010290226.5A CN111489705B (en) | 2020-04-14 | 2020-04-14 | Method for image partition display |
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| CN112259053A (en) * | 2020-11-05 | 2021-01-22 | 上海摩软通讯技术有限公司 | Display method and display device |
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| CN101324725A (en) * | 2008-07-30 | 2008-12-17 | 京东方科技集团股份有限公司 | LCD device and backlight device |
| CN102200659A (en) * | 2010-03-24 | 2011-09-28 | 三星电子株式会社 | Display apparatus |
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| CN201439903U (en) * | 2009-08-07 | 2010-04-21 | 北京京东方光电科技有限公司 | Direct-type backlight source module |
| CN201741368U (en) * | 2010-07-29 | 2011-02-09 | 海尔集团公司 | Display device |
| PL2721811T3 (en) * | 2011-06-14 | 2020-06-01 | Koninklijke Philips N.V. | Graphics processing for high dynamic range video |
| CA2850037C (en) * | 2011-09-27 | 2022-10-04 | Koninklijke Philips N.V. | Apparatus and method for dynamic range transforming of images |
| CN103515516A (en) * | 2012-06-20 | 2014-01-15 | 鑫成科技(成都)有限公司 | Light-emitting diode packaging structure |
| CN105469746B (en) * | 2014-06-16 | 2019-02-26 | 青岛海信电器股份有限公司 | A kind of liquid crystal display backlight control apparatus, LCD TV and MCU chip |
| CN107103886B (en) * | 2017-06-08 | 2019-07-12 | 武汉华星光电技术有限公司 | A kind of dynamic backlight control display methods and device |
| CN107390428A (en) * | 2017-07-24 | 2017-11-24 | 武汉华星光电技术有限公司 | Down straight aphototropism mode set and liquid crystal display |
| CN109188780B (en) * | 2018-11-21 | 2022-04-19 | 厦门天马微电子有限公司 | Direct type backlight module and display device |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101324725A (en) * | 2008-07-30 | 2008-12-17 | 京东方科技集团股份有限公司 | LCD device and backlight device |
| CN102200659A (en) * | 2010-03-24 | 2011-09-28 | 三星电子株式会社 | Display apparatus |
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